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1 Austempered Ductile Iron: Technology Base Required for an Emerging Technology (October/November 1984)

This paper addresses Austempered Ductile Iron (ADI) as an emerging Itechnology and defines its challenge by describing the state-of-the-art of incumbent materials. The writing is more philosophical in nature than technical and is presented to establish a perspective.

2 Austempered Nodular Cast Irons (March/April 1985)

Austempering heat treatments (austenitizing followed by rapid cooling to the tempering temperature) have been applied to nodular irons on an experimental basis for a number of years, but commercial interest in the process has only recently come to the surface.

3 Siemens Has Georgia Schools on its Mind (September 2013)

Siemens is helping the state of Georgia's STEM initiative by helping develop educational programs for the public schools.

4 Industry News (July 2014)

The complete Industry News section from the July 2014 issue of Gear Technology.

5 Getting the Right Tools (September/October 2014)

So there is little chance that they need the same software to assist with their work. Gone are the days when companies wrote their own code and process engineers thumbed the same tattered reference book.

6 Sally Ride Science: Creativity, Collaboration and Fun (August 2014)

Sally Ride Science will be featured at IMTS 2014.

7 Product News (August 2014)

The complete Product News section from the August 2014 issue of Gear Technology.

8 Off-Highway Gears (June/July 2013)

Market needs push in 2013, but will it get one? The construction/off-highway industries have been here before. New equipment, technologies and innovations during an economic standstill that some have been dealing with since 2007.

9 Viewpoint (November/December 1990)

Dear Editor: Your article on the ITC's Report to the President on the condition of the U.S. gear industry (Sept./Oct. issue) was most interesting. I am wondering if the total report neglected to mention that some of our inability to export gears is due to our reluctance to provide metric countries with the metric module-based gears that overseas customers demand.

10 ADI - A Designer Gear Material (March/April 1995)

If someone were to tell you that he had a gear material that was stronger per pound than aluminum, as wear-resistant as steel, easier to machine than free-machining steel and capable of producing gears domestically for 20% less than those now cut from foreign made forgings, would you consider that material to be "high tech"? Probably. Well, throw out all the pre-conceived notions that you may have had about "high tech" materials. The high-performance material they didn't teach you about in school is austempered ductile iron (ADI).

11 Industry News (January/February 2013)

The complete Industry News section from the January/February 2013 issue of Gear Technology.

12 CNC Technology and the System-Independent Manufacture of Spiral Bevel Gears (September/October 1992)

CNC technology offers new opportunities for the manufacture of bevel gears. While traditionally the purchase of a specific machine at the same time determined a particular production system, CNC technology permits the processing of bevel gears using a wide variety of methods. The ideological dispute between "tapered tooth or parallel depth tooth" and "single indexing or continuous indexing" no longer leads to an irreversible fundamental decision. The systems have instead become penetrable, and with existing CNC machines, it is possible to select this or that system according to factual considerations at a later date.

13 Developing a Total Productive Maintenance System (May/June 1995)

There's a reason they call it catastrophic gear failure: For example, if the line goes down at a large aluminum rolling mill because a gear set goes bad, the cost can run up to a whopping $200,000 a week. Even in smaller operations, the numbers alone (not to mention all the other problems) can be a plant manager's worst nightmare.

14 Design Guidelines for High-Capacity Bevel Gear Systems (January/February 1992)

The design of any gearing system is a difficult, multifaceted process. When the system includes bevel gearing, the process is further complicated by the complex nature of the bevel gears themselves. In most cases, the design is based on an evaluation of the ratio required for the gear set, the overall envelope geometry, and the calculation of bending and contact stresses for the gear set to determine its load capacity. There are, however, a great many other parameters which must be addressed if the resultant gear system is to be truly optimum. A considerable body of data related to the optimal design of bevel gears has been developed by the aerospace gear design community in general and by the helicopter community in particular. This article provides a summary of just a few design guidelines based on these data in an effort to provide some guidance in the design of bevel gearing so that maximum capacity may be obtained. The following factors, which may not normally be considered in the usual design practice, are presented and discussed in outline form: Integrated gear/shaft/bearing systems Effects of rim thickness on gear tooth stresses Resonant response

15 Tomorrow's Gear Inspection Systems: Arriving Just in Time (June/July 2012)

Gleason's GMS analytical gear inspection systems provide all the right features at Eaton Corp.

16 Automated Inspection Systems: The Whole Picture (January/February 1998)

No one (not even you and I) consistently makes parts with perfect form and dimensions, so we must be able to efficiently check size and shape at many stages in the manufacturing and assembly process to eliminate scrap and rework and improve processes and profits. Automated inspection systems, which are widely used in all kinds of manufacturing operations, provide great efficiencies in checking individual features, but may not be as effective when asked to evaluate an entire part. You need to know why this is true and what you can do to improve your part yields.

17 Towards an Improved AGMA Accuracy Classification System on Double-Flank Composite Measurements (June/July 2012)

AGMA introduced ANSI/AGMA 2015–2–A06— Accuracy Classification System: Radial System for Cylindrical Gears, in 2006 as the first major rewrite of the double-flank accuracy standard in over 18 years. This document explains concerns related to the use of ANSI/AGMA 2015–2–A06 as an accuracy classification system and recommends a revised system that can be of more service to the gearing industry.

18 The Effects of Surface Hardening on the Total Gear Manufacturing System (January/February 1991)

Carburized and hardened gears have optimum load-carrying capability. There are many alternative ways to produce a hard case on the gear surface. Also, selective direct hardening has some advantages in its ability to be used in the production line, and it is claimed that performance results equivalent to a carburized gear can be obtained. This article examines the alternative ways of carburizing, nitriding, and selective direct hardening, considering equipment, comparative costs, and other factors. The objective must be to obtain the desired quality at the lowest cost.

19 Topological Gearing Modifications: Optimization of Complex Systems Capable of Oscillation (May 2014)

Vibration and noise from wind turbines can be significantly influenced - and therefore reduced - by selecting suitable gearing modifications. New options provided by manufacturers of machine tools and grinding machines, and especially state-of-the-art machines and controls, provide combined gearing modifications - or topological gearing corrections - that can now be reliably machined. Theoretical investigations of topological modifications are discussed here with the actual machining and their possible use.

20 How to Minimize Power Losses in Transmissions, Axles and Steering Systems (September 2012)

By increasing the number of gears and the transmission-ratio spread, the engine will run with better fuel efficiency and without loss of driving dynamics. Transmission efficiency itself can be improved by: using fuelefficient transmission oil; optimizing the lubrication systems and pumps; improving shifting strategies and optimizing gearings; and optimizing bearings and seals/gaskets.

21 Systematic Approach to Desinging Plastic Spur and Helical Gears (November/December 1989)

Plastic gears are being used increasingly in applications, such as printers, cameras, small household appliances, small power tools, instruments, timers, counters and various other products. Because of the many variables involved, an engineer who designs gear trains on an occasional basis may find the design process to be somewhat overwhelming. This article outlines a systematic design approach for developing injection molded plastic spur and helical gears. The use of a computer program for designing plastic gears is introduced as an invaluable design tool for solving complex gearing equations.

22 Sicmat Utilizes NUM CNC Systems (September 2012)

A high-performance, 11-axis CNC system from NUM has enabled machine tool manufacturer Sicmat to create a gear honing machine that sets a new industry standard for post-hardening fine finishing.

23 Systematic Investigations on the Influence of Viscosity Index Improvers on EHL Film Thickness (November/December 2001)

Mineral-oil-base lubricants show a significant decrease of kinematic viscosity with rising temperature, as exemplified in Figure 1 by lubricants for vehicle gears. An important attribute of lubricants is their viscosity index (VI), according to DIN/ISO 2909 (Ref. 4). Viscosity index is a calculated coefficient, which characterizes the change of viscosity of lubricants as a function of temperature. A high viscosity index represents a low variation of viscosity due to temperature and vice versa. A low viscosity-temperature-dependence is required for lubricants that are operated at significantly varying temperature conditions, such as vehicle engine and gear lubricants in summer and winter time. This way, the oils remain flowing and pumpable at low temperatures on the one hand; and on the other hand, sufficiently thick lubricant films can be formed at higher temperatures for a safe separation of the surfaces.

24 Austempered Gears and Shafts: Tough Solutions (March/April 2001)

Aurstempered irons and steels offer the design engineer alternatives to conventional material/process combinations. Depending on the material and the application, austempering may provide the producers of gear and shafts with the following benefits: ease of manufacturing, increased bending and/or contact fatigue strength, better wear resistance or enhanced dampening characteristics resulting in lower noise. Austempered materials have been used to improve the performance of gears and shafts in many applications in a wide range of industries.

25 Issues of Gear Design Using 3D Solid Modeling Systems (January/February 1999)

More and more gear shops are wrestling with the issue of whether or not solid modeling is right for their gear design work. The Q & A Page of The Gear Industry Home Page has had numerous questions asking how to model gears in solid modeling applications such as AutoCAD, Solidworks and Pr/Engineer. Given the problems people have been having, we are presenting the step-by-step process for modeling gears in Pr/Engineer, but first we thought it would be a good idea to explore the question of whether or not you should even try to design gears using Pro/Engineer or any other 3D solid modeling program.

26 Eddy Current Examination of Gear Systems (May/June 1997)

Nondestructive examination (NDE) of ferrous and nonferrous materials has long proved an effective maintenance and anomaly characterization tool for many industries. Recent research has expanded its applicability to include the inspection of large, open gear drives. Difficulties inherent in other NDE methods make them time-consuming and labor-intensive. They also present the user with the environmental problem of the disposal of used oil. The eddy current method addresses these problems.

27 Operational Condition and Superfinishing Effect on High-Speed Helical Gearing System Performance (March/April 2008)

An experimental effort has been conducted on an aerospace-quality helical gear train to investigate the thermal behavior of the gear system. Test results from the parametric studies and the superfinishing process are presented.

28 Global Positioning System: The Early Years (January/February 2010)

Before retiring from St. Louis Gear in 2000, Roy Harmon liked to tinker. Since the customer base at the time was seasonal, Harmon was looking for a project to keep himself busy. The engineer decided to challenge himself by designing a “South Pointing Chariot,” a device he had read about in the book The Evolution of the Gear Art by Darle Dudley.

29 Systematic Investigations on the Influence of Case Depth on the Pitting and Bending Strength of Case Carburized Gears (July/August 2005)

The gear designer needs to know how to determine an appropriate case depth for a gear application in order to guarantee the required load capacity.

30 A Planetary System that Increases Power Density (January/February 2005)

Turnkey Design Services is manufacturing a planetary gear system to increase power density.

31 Flank Breakage on Gears for Energy Systems (November/December 2011)

Gear flank breakage can be observed on edge zone-hardened gears. It occurs, for example, on bevel gears for water turbines, on spur gears for wind energy converters and on single- and double-helical gears for other industrial applications.

32 The Effect of Flexible Components on the Durability, Whine, Rattle and Efficiency of an Automotive Transaxle Geartrain System (November/December 2009)

Gear engineers have long recognized the importance of considering system factors when analyzing a single pair of gears in mesh. These factors include important considerations such as load sharing in multi-mesh geartrains and bearing clearances, in addition to the effects of flexible components such as housings, gear blanks, shafts and carriers for planetary geartrains. However, in recent years, transmission systems have become increasingly complex—with higher numbers of gears and components—while the quality requirements and expectations in terms of durability, gear whine, rattle and efficiency have increased accordingly.

33 Tribology Aspects in Angular Transmission Systems, Part 1 (August 2010)

"General Explanations on Theoretical Bevel Gear Analysis" is part 1 of an eight-part series from Gleason's Dr. Hermann Stadtfeld.

34 Drake's Newest Thread Grinder Utilizes Robot Load-Unload System (July/August 2006)

The GS:TE-LM thread grinder from Drake Manufacturing is fitted with a robot load/unload system that provides maximum throughput for high-volume production of ground threads.

35 Zerol Bevel Gears: Tribology Aspects in Angular Transmission Systems, Part III (November/December 2010)

Zerol bevel gears are the special case of spiral bevel gears with a spiral angle of 0°. They are manufactured in a single-indexing face milling process with large cutter diameters, an extra deep tooth profile and tapered tooth depth.

36 Manufacturing Method of Large-Sized Spiral Bevel Gears in Cyclo-Palloid System Using Multi-Axis Control and Multi-Tasking Machine Tool (August 2011)

In this article, the authors calculated the numerical coordinates on the tooth surfaces of spiral bevel gears and then modeled the tooth profiles using a 3-D CAD system. They then manufactured the large-sized spiral bevel gears based on a CAM process using multi-axis control and multi-tasking machine tooling. The real tooth surfaces were measured using a coordinate measuring machine and the tooth flank form errors were detected using the measured coordinates. Moreover, the gears were meshed with each other and the tooth contact patterns were investigated. As a result, the validity of this manufacturing method was confirmed.

37 Robotic Gear Deburring System Automates Chamfering (November/December 2009)

Compass Automation unveiled its Robotic Deburring System at Gear Expo 2009.

38 Hypoid Gears: Tribology Aspects in Angular Transmission Systems, Part VII (June/July 2011)

Hypoid gears are the paragon of gearing. To establish line contact between the pitches in hypoid gears, the kinematically correct pitch surfaces have to be determined based on the axoids. In cylindrical and bevel gears, the axoids are identical to the pitch surfaces and their diameter or cone angle can be calculated simply by using the knowledge about number of teeth and module or ratio and shaft angle. In hypoid gears, a rather complex approach is required to find the location of the teeth—even before any information about flank form can be considered. This article is part seven of an eight-part series on the tribology aspects of angular gear drives.

39 Spiral Bevel Gears: Tribology Aspects in Angular Transmission Systems, Part IV (January/February 2011)

This article is part four of an eight-part series on the tribology aspects of angular gear drives. Each article will be presented first and exclusively by Gear Technology, but the entire series will be included in Dr. Stadtfeld’s upcoming book on the subject, which is scheduled for release in 2011.

40 Tribology Aspects in Angular Transmission Systems, Part V: Face Gears (March/April 2011)

This article is part five of an eight-part series on the tribology aspects of angular gear drives. Each article will be presented first and exclusively by Gear Technology, but the entire series will be included in Dr. Stadtfeld’s upcoming book on the subject, which is scheduled for release in 2011.

41 The Replacements - Taking Steps to Strengthen the Future Skilled Workforce (January/February 2009)

For years, politicians, educators and business leaders have generated various ideas to revitalize U.S. manufacturing and engineering. These include manufacturing initiatives, internal training programs and an emphasis on science, technology, engineering and mathematics (STEM) in the classroom. The declining expertise in these fields, however, continues to be a growing problem in every facet of manufacturing and engineering.

42 Gear Inspection For The Long Haul (September/October 1995)

Question: We just received permission to purchase our first CNC gear inspection system. With capital approvals so hard to come by, especially for inspection equipment, I want to be sure to purchase a system I can count of for years to come. My past experience with purchasing CNC equipment has shown me that serviceability of the computer and the CNC controller portion of the system can be a problem in just a few years because of the obsolescence factor. What information do I need to look for when selecting a supplier to reduce the risk of obsolescence, as well as to reduce the long-term servicing costs in the computer and controls portion of the system?

43 Drivetrain Research An Idea Whose Time is Overdue (July/August 1995)

The popular perception today is that technological advancement is an engine running almost out of control. New products and processes are developing faster than we can keep up with them, as anyone who has had a new computer system crash into obsolescence practically before it's out of the box can tell you. But that's not the case everywhere. Transmission technology, for example.

44 CNC Software Savvy (May/June 1995)

Question: When we purchase our first CNC gear hobbing machine, what questions should we ask about the software? What do we need to know to correctly specify the system requirements?

45 Dry Gear Hobbing (July/August 1995)

Question: We are contemplating purchasing a hobbing machine with dry hobbing capabilities. What do we need to know about the special system requirements for this technology?

46 Plan Ahead (January/February 1996)

Indianapolis is a nice city. No. It's a great city for a convention. The facilities and the city are modern, clean and bright. The Convention Center is easy to get to by either car or plane, and its central location in the heart of town and the enclosed skyway system between it and major hotels put visitors close to amenities like restaurants, shopping and entertainment. The people are friendly and go out of their way to make visitors feel welcome.

47 Thermal Effects on CMMs (September/October 1997)

The trend toward moving coordinate measuring machines to the shop floor to become an integral part of the manufacturing operations brings real time process control within the reach of many companies. Putting measuring machines on the shop floor, however, subjects them to harsh environmental conditions. Like any measuring system, CMMs are sensitive to any ambient condition that deviates from the "perfect" conditions of the metrology lab.

48 M & M Precision, Penn State & NIST Team Up For Gear Metrology Research (July/August 1997)

In 1993, M & M Precision Systems was awarded a three-year, partial grant from the Advanced Technology Program of the Department of Commerce's National Institute of Standards and Technology (NIST). Working with Pennsylvania State University, M&M embarked on a technology development project to advance gear measurement capabilities to levels of accuracy never before achieved.

49 What to Look For Before You Leap (March/April 1995)

Question: We are interested in purchasing our first gear hobbing machine. What questions should we ask the manufacturer, and what do we need to know in order to correctly specify the CNC hardware and software system requirements?

50 New Book For Gear Purchaseres & Specifiers (May/June 1997)

This book is written for those among us, with or without a technical background, who have an occasional need to use, purchase or specify gears. The author assumes an audience that is not made up of experienced gear designers, but of people who do need to have a basic understanding of the criteria used by the designer. The subjects covered include not only the gears themselves, but their manufacturing methods, the systems that contain them and the terms used to describe them.

51 Induction Heat Trating: Things Remembered, Things Forgotten (March/April 1997)

Many potential problems are not apparent when using new induction heat treating systems. The operator has been trained properly, and setup parameters are already developed. Everything is fresh in one's mind. But as the equipment ages, personnel changes or new parts are required to be processed on the old equipment ages, personnel changes or new parts are required to b processed on the old equipment, important information can get lost in the shuffle.

52 Alternative Lubrication Methods for Large Open Gear Drives (September/October 1996)

The type of lubricant and the method of applying it to the tooth flanks of large open gears is very important from the point of view of lubrication technology and maintenance. When selecting the type of lubricant and the application method, it is important to check whether it is possible to feed the required lubricant quantity to the load-carrying tooth flanks, This is necessary to avoid deficient lubrication, damage to the gear and operational malfunctions. It is important to determine the type of lubricant, which may be fluid or grease-like. The consistency of the lubricant will have a direct impact on the ability of the lubrication system to feed adequately the lubricant to the gear. The interactions between the common types of lubricant and the lubrication application methods for open gear drives are shown in Fig. 1.

53 The SERCOS Interface Standard (January/February 1996)

Today motion control systems are migrating from analog to digital technology at an ever increasing rate because digital technology at an ever-increasing rate because digital drives provide performance equal to or exceeding that of analog drives, plus information to run your machine more effectively and manage your quality program and your business. Most of this data is simply not available from analog drives.

54 Frozen Gears (March/April 1993)

Durability is the most important criterion used to define the quality of a gear. The freezing of metals has been acknowledged for almost thirty years as an effective method for increasing durability, or "wear life," and decreasing residual stress in tool steels. The recent field of deep cryogenics (below -300 degrees F) has brought us high temperature superconductors, the superconducting super collider, cryo-biology, and magnotehydrodynamic drive systems. It has also brought many additional durability benefits to metals.

55 Full-Load Testing of Large Gearboxes Using Closed-Loop Power Circulation (September/October 1991)

This method of testing large gearboxes or, indeed, any power transmission element, had numerous advantages and offers the possibility of large savings in time, energy, and plant, if the overall situation is conducive to its use. This usually requires that several such units need to be tested, and that they can be conveniently connected to each to each other in such a way as to form a closed-loop drive train. No power sink is required, and the drive input system has only to make up power losses. The level of circulating power is controlled by the torque, which is applied statically during rotation, and the drive speed. Principles, advantage, and limitations are described, together with recent experiences in the only known large-scale usage of this technique in Australia.

56 Doing It Right & Faster... The Computer's Impact on Gear Design & Manufacture (May/June 1992)

The availability of technical software has grown rapidly in the last few years because of the proliferation of personal computers. It is rare to find an organization doing technical work that does not have some type of computer. For gear designers and manufacturers, proper use of the computer can mean the difference between meeting the competition or falling behind in today's business world. The right answers the first time are essential if cost-effective design and fabrication are to be realized. The computer is capable of optimizing a design by methods that are too laborious to undertake using hard calculations. As speeds continue to climb and more power per pound is required from gear systems, it no longer is possible to design "on the safe side" by using larger service factors. At high rotational speeds a larger gear set may well have less capacity because of dynamic effects. The gear engineer of today must consider the entire gear box or even the entire rotating system as his or her domain.

57 Synthesis of Spiral Bevel Gears (March/April 1991)

There are different types of spiral bevel gears, based on the methods of generation of gear-tooth surfaces. A few notable ones are the Gleason's gearing, the Klingelnberg's Palloid System, and the Klingelnberg's and Oerlikon's Cyclo Palliod System. The design of each type of spiral bevel gear depends on the method of generation used. It is based on specified and detailed directions which have been worked out by the mentioned companies. However, there are some general aspects, such as the concepts of pitch cones, generating gear, and conditions of force transmissions that are common for all types of spiral bevel gears.

58 Efficient Methods for the Synthesis of Compound Planetary Differential Gear Trains for Multiple Speed Ratio Generation (July/August 1990)

This article presents an efficient and direct method for the synthesis of compound planetary differential gear trains for the generation of specified multiple speed ratios. It is a train-value method that utilizes the train values of the integrated train components of the systems to form design equations which are solved for the tooth numbers of the gears, the number of mating gear sets and the number of external contacts in the system. Application examples, including vehicle differential transmission units, rear-end differentials with unit and fractional speed ratios, multi-input functions generators and robot wrist joints are given.

59 Fahrenheit 451: Gear Up For Induction Hardening (March/April 1998)

So, you've been assigned the task to buy an induction heating system for heat treating: It's an intimidating, but by no means impossible, assignment. With the help of the information in this article, you could be able to develop common ground with your supplier and have the tools to work with him or her to get the right machine for your jobs.

60 Comparing Surface Failure Modes in Bearings and Gears: Appearances vs. Mechanisms (July/August 1992)

In the 1960's and early 1970's, considerable work was done to identify the various modes of damage that ended the lives of rolling element bearings. A simple summary of all the damage modes that could lead to failure is given in Table 1. In bearing applications that have insufficient or improper lubricant, or have contaminants (water, solid particles) or poor sealing, failure, such as excessive wear or vibration or corrosion, may occur, rather than contact fatigue. Usually other components in the overall system besides bearings also suffer. Over the years, builders of transmissions, axles, and gear boxes that comprise such systems have understood the need to improve the operating environment within such units, so that some system life improvements have taken place.

61 Initial Design of Gears Using an Artificial Neural Net (May/June 1993)

Many CAD (Computer Aided Design) systems have been developed and implemented to produce a superior quality design and to increase the design productivity in the gear industry. In general, it is true that a major portion of design tasks can be performed by CAD systems currently available. However, they can only address the computational aspects of gear design that typically require decision-making as well. In most industrial gear design practices, the initial design is the critical task that significantly effects the final results. However, the decisions about estimating or changing gear size parameters must be made by a gear design expert.

62 Information Control (January/February 1995)

It used to be that a shop with hustle and plenty of big, fast machines could thrive using a manual system. But no more. Today's economic environment requires more and more in the way of topnotch service and quick turnaround - which frequently means a completely integrated shop floor control system.

63 Gear Hobbing Without Coolant (November/December 1994)

For environmental and economic reasons, the use of coolant in machining processes is increasingly being questioned. Rising coolant prices and disposal costs, as well as strains on workers and the environment, have fueled the debate. The use of coolant has given rise to a highly technical system for handling coolant in the machine (cooling, filtering) and protecting the environment (filter, oil-mist collector). In this area the latest cutting materials - used with or without coolant - have great potential for making the metal-removal process more economical. The natural progression to completely dry machining has decisive advantages for hobbing.

64 Maximum Life Spiral Bevel Reduction Design (September/October 1993)

Optimization is applied to the design of a spiral bevel gear reduction for maximum life at a given size. A modified feasible directions search algorithm permits a wide variety of inequality constraints and exact design requirements to be met with low sensitivity to initial values. Gear tooth bending strength and minimum contact ration under load are included in the active constraints. The optimal design of the spiral bevel gear reduction includes the selection of bearing and shaft proportions in addition to gear mesh parameters. System life is maximized subject to a fixed back-cone distance of the spiral bevel gear set for a specified speed ratio, shaft angle, input torque and power. Significant parameters in the design are the spiral angle, the pressure angle, the numbers of teeth on the pinion and gear and the location and size of the four support bearings. Interpolated polynomials expand the discrete bearing properties and proportions into continuous variables for gradient optimization. After finding the continuous optimum, a designer can analyze near-optimal designs for comparison and selection. Design examples show the influence of the bearing lives on the gear parameters in the optimal configurations. For a fixed back-cone distance, optimal designs with larger shaft angles have larger service lives.

65 Lubricants and Lubrication of Plastic Gears (September/October 1993)

Surface measurement of any metal gear tooth contact surface will indicate some degree of peaks and valleys. When gears are placed in mesh, irregular contact surfaces are brought together in the typical combination of rolling and sliding motion. The surface peaks, or asperities, of one tooth randomly contact the asperities of the mating tooth. Under the right conditions, the asperities form momentary welds that are broken off as the gear tooth action continues. Increased friction and higher temperatures, plus wear debris introduced into the system are the result of this action.

66 The ELIMS Project (January/February 1995)

Arrow Gear Company of Downers Grove, IL, has implemented a computer system that fully integrates exchange between all of its computer applications. The ELIMS (Electronic Linkage of Information Management Systems) project has increased manufacturing productivity and reduced lead times.

67 The Importance of Integrated Software Solutions in Troubleshooting Gear Whine (May 2015)

NVH — noise, vibration and harshness — is a key issue in the design and development of modern transmission and driveline systems.

68 Fundamental Study of Detection of Plastic Gear Failure Signs (March/April 2015)

This paper proposes a new method — using neural oscillators — for filtering out background vibration noise in meshing plastic gear pairs in the detection of signs of gear failure. In this paper these unnecessary frequency components are eliminated with a feed-forward control system in which the neural oscillator’s synchronization property works. Each neural oscillator is designed to tune the natural frequency to a particular one of the components.

69 A Practical Approach for Modeling a Bevel Gear (March/April 2015)

The geometry of the bevel gear is quite complicated to describe mathematically, and much of the overall surface topology of the tooth flank is dependent on the machine settings and cutting method employed. AGMA 929-A06 — Calculation of Bevel Gear Top Land and Guidance on Cutter Edge Radius — lays out a practical approach for predicting the approximate top-land thicknesses at certain points of interest — regardless of the exact machine settings that will generate the tooth form. The points of interest that AGMA 929-A06 address consist of toe, mean, heel, and point of involute lengthwise curvature. The following method expands upon the concepts described in AGMA 929-A06 to allow the user to calculate not only the top-land thickness, but the more general case as well, i.e. — normal tooth thickness anywhere along the face and profile of the bevel gear tooth. This method does not rely on any additional machine settings; only basic geometry of the cutter, blank, and teeth are required to calculate fairly accurate tooth thicknesses. The tooth thicknesses are then transformed into a point cloud describing both the convex and concave flanks in a global, Cartesian coordinate system. These points can be utilized in any modern computer-aided design software package to assist in the generation of a 3D solid model; all pertinent tooth macrogeometry can be closely simulated using this technique. A case study will be presented evaluating the accuracy of the point cloud data compared to a physical part.

70 Quality and Surface of Gears Manufactured by Free-Form Milling with Standard Tools (January/February 2015)

The recently available capability for the free-form milling of gears of various gear types and sizes — all within one manufacturing system — is becoming increasingly recognized as a flexible machining process for gears.

71 Simulation of Deviations in Hobbing and Generation Grinding (September/October 2014)

The hobbing and generation grinding production processes are complex due to tool geometry and kinematics. Expert knowledge and extensive testing are required for a clear attribution of cause to work piece deviations. A newly developed software tool now makes it possible to simulate the cutting procedure of the tool and superimpose systematic deviations on it. The performance of the simulation software is illustrated here with practical examples. The new simulation tool allows the user to accurately predict the effect of errors. With this knowledge, the user can design and operate optimal, robust gearing processes.

72 Technological Potential and Performance of Gears Ground by Dressable CBN Tools (March/April 2014)

Dressable vitrified bond CBN grinding tools combine the advantages of other common tool systems in generating gear grinding. Yet despite those technological advantages, there is only a small market distribution of these grinding tools due to high tool costs. Furthermore, scant literature exists regarding generating gear grinding with dressable CBN. This is especially true regarding the influence of the grinding tool system on manufacturing-related component properties. The research objective of this report is to determine the advantages of dressable CBN tools in generating gear grinding.

73 Dynamic Loads in Parallel Shaft Transmissions - Part 2 (May/June 1990)

Solutions to the governing equations of a spur gear transmission model, developed in a previous article are presented. Factors affecting the dynamic load are identified. It is found that the dynamic load increases with operating speed up to a system natural frequency. At operating speeds beyond the natural frequency the dynamic load decreases dramatically. Also, it is found that the transmitted load and shaft inertia have little effect upon the total dynamic load. Damping and friction decrease the dynamic load. Finally, tooth stiffness has a significant effect upon dynamic loadings the higher the stiffness, the lower the dynamic loading. Also, the higher the stiffness, the higher the rotating speed required for peak dynamic response.

74 Hypoid Gears with Involute Teeth (May 2015)

This paper presents the geometric design of hypoid gears with involute gear teeth. An overview of face cutting techniques prevalent in hypoid gear fabrication is presented. Next, the specification of a planar involute rack is reviewed. This rack is used to define a variable diameter cutter based upon a system of cylindroidal coordinates; thus, a cursory presentation of cylindroidal coordinates is included. A mapping transforms the planar involute rack into a variable diameter cutter using the cylindroidal coordinates. Hypoid gears are based on the envelope of this cutter. A hypoid gear set is presented based on an automotive rear axle.

75 Gear Mathematics for Bevel & Hypoid Gears (August 2015)

The calculation begins with the computation of the ring gear blank data. The geometrically relevant parameters are shown in Figure 1. The position of the teeth relative to the blank coordinate system of a bevel gear blank is satisfactorily defined with...

76 Off-Highway or Off-Press, Andantex Focuses on Precision (June 2015)

Andantex USA is a part of the worldwide Redex group, a longtime provider of high-precision motion control components and systems

77 Test Facility Simulation Results for Aerospace Loss-of-Lubrication of Spur Gears (June 2015)

Prior to receiving airworthiness certification, extensive testing is required during the development of rotary wing aircraft drive systems. Many of these tests are conducted to demonstrate the drive system’s ability to operate at extreme conditions, i.e. — beyond that called for in the normal to maximum power operating range.

78 Surface Roughness Measurements of Cylindrical Gears and Bevel Gears on Gear Inspection Machines (May 2015)

Alongside the macro test parameters on tooth flanks for profile and tooth traces, surface properties (roughness) play a decisive role in ensuring proper toothed gear function. This article addresses roughness measurement systems on tooth flanks. In addition to universal test equipment, modified test equipment based on the profile method for use on gears is addressed in particular. The equipment application here refers to cylindrical gear flanks and bevel gear flanks. The most important roughness parameters, as well as the implementation of the precise measurement procedure will also be described under consideration of the applicable DIN EN ISO standards as well as the current VDI/VDE Directive 2612 Sheet 5.

79 Planet Carrier Design (January/February 2014)

With all the advantages of building float into a planetary gear system, what advantages are there to using a carrier in the first place, rather than simply having your planets float in the system?

80 Hybrid Gear Preliminary Results: Application of Composites to Dynamic Mechanical Components (May 2013)

Composite spur gears were designed, fabricated and tested at NASA Glenn Research Center. The composite web was bonded only to the inner and outer hexagonal features that were machined from an initially all-metallic aerospace quality spur gear. The hybrid gear was tested against an all-steel gear and against a mating hybrid gear. Initial results indicate that this type of hybrid design may have a dramatic effect on drive system weight without sacrificing strength.

81 The Design and Testing of a Low Noise Marine Gear (May/June 2000)

This article offers an overview of the practical design of a naval gear for combined diesel or gas turbine propulsion (CODOG type). The vibration performance of the gear is tested in a back-to-back test. The gear presented is a low noise design for the Royal Dutch Navy's LCF Frigate. The design aspects for low noise operation were incorporated into the overall gear system design. Therefore, special attention was paid to all the parameters that could influence the noise and vibration performance of the gearbox. These design aspects, such as tooth corrections, tooth loading, gear layout, balance, lubrication and resilient mounting, will be discussed.

82 Evaluation of Carburized & Ground Face Gears (September/October 2000)

Designers are constantly searching for ways to reduce rotocraft drive system weight. Reduced weight can increase the payload, performance, or power density of current and future systems. One example of helicopter transmission weight reduction was initiated as part of the United States Army Advanced Rotocraft Transmission program. This example used a split-torque, face-gear configuration concept (Ref. 1). compared to a conventional design with spiral-bevel gears, the split-torque, face-gear design showed substantial weight savings benefits. Also, the use of face gears allows a wide-range of possible configurations with technical and economic benefits (Ref. 2).

83 Powder Metallurgy Innovations (September/October 1999)

Powder metal. To gear makers today, the phrase conjures images of low power applications in non-critical systems. As powder metal technology advances, as the materials increase in density and strength, such opinions are changing. It is an ongoing, evolutionary process and one that will continue for some time. According to Donald G. White, the executive director of the Metal Powder Industries Federation, in his State-of-the-P/M Industry - 1999 report. "The P/M world is changing rapidly and P/M needs to be recognized as a world-class process - national, continental and even human barriers and prejudices must be eliminated - we must join forces as a world process - unified in approach and goals."

84 If He Builds It, Will They Come (September/October 1999)

Richard Spens has been rebuilding antique machine tools for nearly a decade. He is drawn to the ornate architecture and fascinated by the open design that allows you to see inside a machine as it operates. "Working with machines has been a lifelong thing with me," said Spens, now a design engineer. "I started building steam engines when I was 10 years old." What he's working on now, however, is bigger than any steam engine or machine tool. In rural Livonia, Michigan, Spens is converting an old dairy barn into an accurate recreation of a turn-of-the-century, belt driven gear shop. It's an outgrowth of his interest in antique machine tools and, he feels, a way to stem the tide that is costing America so many manufacturing and skilled trade jobs.

85 Comparing Standards (September/October 1998)

One of the best ways to learn the ISO 6336 gear rating system is to recalculate the capacity of a few existing designs and to compare the ISO 6336 calculated capacity to your experience with those designs and to other rating methods. For these articles, I'll assume that you have a copy of ISO 6336, you have chosen a design for which you have manufacturing drawings and an existing gear capacity calculation according to AGMA 2001 or another method. I'll also assume that you have converted dimensions, loads, etc. into the SI system of measurement.

86 Water Powered Machinery (January/February 2001)

In one of my many visits to northern New York state, which included the St. Lawrence River (Thousand Islands Region) and the Adirondack Mountains, I visited Croghan, a village on the Beaver River, which is fed by the Stillwater Resevoir in the Adirondack Mountains. At the base of a dam within the village, I found the remnants of a water turbine and a bevel gear drive system. Having worked for The Gleason Works for many years, I was intrigued by the remains of the bevel gears, which appeared to have had wooden teeth at one time.

87 Stock Distribution Optimization in Fixed Setting Hypoid Pinions (July/August 2001)

Face-milled hypoid pinions produced by the three-cut, Fixed Setting system - where roughing is done on one machine and finishing for the concave-OB and convex-IB tooth flanks is done on separate machines with different setups - are still in widespread use today.

88 Light Weight Assembled Gears - A Green Design Solution (May 2013)

It is widely recognized that the reduction of CO2 requires consistent light-weight design of the entire vehicle. Likewise, the trend towards electric cars requires light-weight design to compensate for the additional weight of battery systems. The need for weight reduction is also present regarding vehicle transmissions. Besides the design of the gearbox housing, rotating masses such as gear wheels and shafts have a significant impact on fuel consumption. The current technology shows little potential of gear weight reduction due to the trade-off between mass optimization and the manufacturing process. Gears are usually forged followed or not by teeth cutting operation.

89 Vegetable-Based Oil as a Gear Lubricant (July/August 2003)

Universal tractor transmission oil (UTTO) is multifunctional tractor oil formulated for use in transmissions, final drives, differentials, wet brakes, and hydraulic systems of farm tractors employing a common oil reservoir. In the present work, the gear protection properties of two formulated vegetable-based UTTO oils, one synthetic ester-based UTTO oil, one synthetic ester gear oil, and one mineral based UTTO oil are investigated.

90 Carbide Hobbing Case Study (May/June 2002)

Bodine Electric Co. of Chicago, IL., has a 97-year history of fine-and medium-pitch gear manufacturing. Like anywhere else, traditions, old systems, and structures can be beneficial, but they can also become paradigms and obstacles to further improvements. We were producing a high quality product, but our goal was to become more cost effective. Carbide hobbing is seen as a technological innovation capable of enabling a dramatic, rather than an incremental, enhancement to productivity and cost savings.

91 Face Gears: An Interesting Alternative for Special Applications - Calculation, Production and Use (September/October 2001)

Crown gearings are not a new type of gear system. On the contrary, they have been in use since very early times for various tasks. Their earliest form is that of the driving sprocket, found in ancient Roman watermills or Dutch windmills. The first principles of gear geometry and simple methods of production (shaper cutting) were developed in the 1940s. In the 1950s, however, crown gears' importance declined. Their tasks were, for example, taken over by bevel gears, which were easier to manufacture and could transmit greater power. Current subject literature accordingly contains very little information on crown gears, directed mainly to pointing out their limitations (Ref. 1).

92 Product Liability for Engineers (July/August 1998)

This textbook, written for college level engineering students, gives a basic grounding in the complexities of product liability law. It also provides useful information to those of us involved in the manufacturing of gears and gear systems in that the fundamental concepts apply to all types of manufacturers.

93 Balance is Critical - Monitoring Essential (November/December 1986)

These are changing times for industry. Trauma and uncertainty are always a part of change, and change is not always for the better. Change is usually forced, most frequently by competition. Our competitive free enterprise system should be able to respond to competition because that's its basis. These are critical years. If we do not respond effectively to change and competition, it could be disasterous.

94 Assembling Spiral Gears: Double Taper Can Be Double Trouble (January/February 2006)

Bevel gear systems are particularly sensitive to improper assembly. Slight errors in gear positioning can turn a well-designed, quality manufactured gear set into a noisy, prone-to-failure weak link in your application.

95 Generating Interchangeable 20-Degree Spur Gear Sets with Circular Fillets to Increase Load Carrying Capacity (July/August 2006)

This article presents a new spur gear 20-degree design that works interchangeably with the standard 20-degree system and achieves increased tooth bending strength and hence load carrying capacity.

96 Kinematical Simulation of Face Hobbing Indexing and Tooth Surface Generation of Spiral Bevel and Hypoid Gears (January/February 2006)

In addition to the face milling system, the face hobbing process has been developed and widely employed by the gear industry. However, the mechanism of the face hobbing process is not well known.

97 The New Power Generation--With All Eyes on Washington, U.S. Wind Industry Seeks Expansion (January/February 2008)

Long before oil, climate change and energy demand were making headlines in Washington, Minnesota State Auditor Rebecca Otto and her husband installed a wind energy system on their property in Minnesota.

98 Dontyne Debuts GATES Software (November/December 2007)

Dontyne Systems, a U.K. company founded by Michael Fish and David Palmer, recently unveiled a new software program for its Gear Production Suite.

99 Single-Pass Honing Holds the Line on PM Sprockets (June 2010)

Bore finishing system from Sunnen helps Cloyes Gear and Products achieve high accuracy, productivity and process capability.

100 The Anatomy of a Micropitting-Induced Tooth Fracture Failure (June 2010)

Micropitting has become a major concern in certain classes of industrial gear applications, especially wind power and other relatively highly loaded, somewhat slow-speed applications, where carburized gears are used to facilitate maximum load capacity in a compact package. While by itself the appearance of micropitting does not generally cause much perturbation in the overall operation of a gear system, the ultimate consequences of a micropitting failure can, and frequently are, much more catastrophic.

101 Super-Reduction Hypoid Gears (August 2011)

Super-reduction hypoid gears (SRH) are bevel worm gears with certain differences regarding hypoid gears. If two axes are positioned in space and the task is to transmit motion and torque between them using some kind of gears with a ratio above 5 and even higher than 50, the following cases are commonly known. Tribology Aspects in Angular Transmission Systems, Part VIII.

102 Beveloid & Hypoloid Gears (May 2011)

Beveloids are helical gears with nonparallel shafts, with shaft angles generally between 5 degrees and 15 degrees. This is part VI in the Tribology Aspects in Angular Transmission Systems Series

103 Straight Bevel Gears (September/October 2010)

Tribology Aspects in Angular Transmission Systems, Part 2

104 Crowning Techniques in Aerospace Actuation Gearing (August 2010)

One of the most effective methods in solving the edge loading problem due to excess misalignment and deflection in aerospace actuation gearing is to localize tooth-bearing contact by crowning the teeth. Irrespective of the applied load, if the misalignment and/or deflection are large enough to cause the contact area to reduce to zero, the stress becomes large enough to cause failure. The edge loading could cause the teeth to break or pit, but too much crowning may also cause the teeth to pit due to concentrated loading. In this paper, a proposed method to localize the contact bearing area and calculate the contact stress with crowning is presented and demonstrated on some real-life examples in aerospace actuation systems.

105 High Speed Gears (September/October 2007)

Above all, a gear is not just a mechanical transmission, but is developed to a system fulfilling multiple demands, such as clutch integration, selectable output speeds, and controls of highest electronic standards. This paper shows the basics for high-speed gear design and a selection of numerous applications in detailed design and operational needs.

106 CFD Technology for Rotorcraft Gearbox Windage Aerodynamics Simulation (August 2009)

A computational fluid dynamics (CFD) method is adapted, validated and applied to spinning gear systems with emphasis on predicting windage losses. Several spur gears and a disc are studied. The CFD simulations return good agreement with measured windage power loss.

107 Effects of Axle Deflection and Tooth Flank Modification on Hypoid Gear Stress Distribution and Contact Fatigue Life (August 2009)

As is well known in involute gearing, “perfect” involute gears never work perfectly in the real world. Flank modifications are often made to overcome the influences of errors coming from manufacturing and assembly processes as well as deflections of the system. The same discipline applies to hypoid gears.

108 Understanding Fluid Flow to Improve Lubrication Efficiency (January/February 2004)

Excess lubricant supply in gearing contributes to power loss due to churning as well as the requirements of the lubrication system itself. Normally, a much larger amount of oil than required is used for cooling because so much of it is thrown away by centrifugal force. To lower the amount of lubricant required and reduce those losses, it is necessary to discover the ideal location of the supplying nozzle.

109 Going Lean Is One Thing (June 2007)

Google “lean manufacturing” and you will find a virtually endless font of information regarding formal lean implementation. You’ll see definitions for Japanese words such as kaizen, gemba, muda, mura, kanban, and so on. You will also find other variations or iterations of lean, e.g.: Six Sigma, Lean Sigma, TPS (Toyota Production System), TOC (Theory of Constraints), JIT (Just in Time), and others.

110 Low Loss Gears (June 2007)

In most transmission systems, one of the main power loss sources is the loaded gear mesh. In this article, the influences of gear geometry parameters on gear efficiency, load capacity, and excitation are shown.

111 Thermal Behavior of Helical Gears (May 2007)

An experimental effort has been conducted on an aerospace-quality helical gear train to investigate the thermal behavior of the gear system as many important operational conditions were varied.

112 Gleason Cutter Head Improves Tool Life and Productivity (November/December 2009)

The Pentac Plus is the latest generation of Gleason’s Pentac bevel gear cutting system. It is designed to allow much higher tool life and improved productivity, especially for cutters using multiple face blade geometry.

113 Industry Forum (November/December 1985)

One of the current research activities here at California State University at Fullerton is systematization of existing knowledge of design of planetary gear trains.

114 The Effect of Start-Up Load Conditions on Gearbox Performance and Life Failure Analysis, With Supporting Case Study (June 2009)

If a gear system is run continuously for long periods of time—or if the starting loads are very low and within the normal operating spectrum—the effect of the start-up conditions may often be insignificant in the determination of the life of the gear system. Conversely, if the starting load is significantly higher than any of the normal operating conditions, and the gear system is started and stopped frequently, the start-up load may, depending on its magnitude and frequency, actually be the overriding, limiting design condition.

115 Practical Magic - Metrology Products Keep Pace with Machine Technology (July 2009)

Gear metrology is a revolving door of software packages and system upgrades. It has to be in order to keep up with the productivity and development processes of the machines on the manufacturing floor. Temperature compensation, faster inspection times and improved software packages are just a few of the advancements currently in play as companies prepare for new opportunities in areas like alternative energy, automotive and aerospace/defense.

116 An International Wind Turbine Gearbox Standard (July 2009)

Industrial gear standards have been used to support reliability through the specification of requirements for design, manufacturing and verification. The consensus development of an international wind turbine gearbox standard is an example where gear products can be used in reliable mechanical systems today. This has been achieved through progressive changes in gear technology, gear design methods and the continual development and refinement of gearbox standards.

117 Calculation of Spur Gear Tooth Flexibility by the Complex Potential Method (September/October 1985)

Calculation of gear tooth flexibility is of interest for at least two reasons: (a) It controls, at least in part, the vibratory properties of a transmission system hence, fatigue resistance and noise: (b) it controls load sharing in multiple tooth contact.

118 Identification and Correction of Damaging Resonances in Gear Drives (August/September 1984)

As a result of extensive research into the vibration characteristics of gear drives, a systematic approach has evolved, by which damaging resonances can be eliminated. The method combines finite element techniques with experimental signature and modal analyses. Implementation of the bulk of the method can be carried out early in the design stage. A step-by-step description of the approach, as it was applied to an existing accessory drive, is given in the text. It is shown how premature bearing failures were eliminated by detuning the torsional oscillations of a gearshaft. A dramatic reduction in vibration levels was achieved as a result of detuning the problem gear. The proposed approach can be extended to other types of rotating machines.

119 Selection of Material and Compatible Heat Treatments for Gearing (May/June 1986)

The manufacturing process to produce a gear essentially consist of: material selection, blank preshaping, tooth shaping, heat treatment, and final shaping. Only by carefully integrating of the various operations into a complete manufacturing system can an optimum gear be obtained. The final application of the gear will determine what strength characteristics will be required which subsequently determine the material and heat treatments.

120 Enhanced Product Performance--Through CBN Grinding (September/October 1988)

Modern manufacturing processes have become an ally of the product designer in producing higher quality, higher performing components in the transportation industry. This is particularly true in grinding systems where the physical properties of CBN abrasives have been applied to improving cycle times, dimensional consistency, surface integrity and overall costs. Of these four factors, surface integrity offers the greatest potential for influencing the actual design of highly stressed, hardened steel components.

121 The Elementary Theory for the Synthesis of Constant Direction Pointing Chariots (or Rotation Neutralizers) (November/December 1988)

The south-pointing chariot exhibited at the Smithsonian Institution, Washington, D.C., (circa 2600 BC)is shown in Fig. 1. Although the mechanism is ancient, it is by no means either primitive or simplistic. The pin-tooth gears drive a complex system, wherein the monk on the top of the chariot continues to point in a preset direction, no matter what direction the vehicle in moved, without a slip of the wheels.(1)

122 The Uses and Limitations of Transmission Error (July/August 1988)

The concept of "transmission error" is relatively new and stems from research work in the late 1950s by Gregory, Harris and Munro,(1) together with the need to check the accuracy of gear cutting machines. The corresponding commercial "single flank" testing equipment became available in the 1960s, but it was not until about ten years ago that it became generally used, and only recently has it been possible to test reliably at full load and full speed.

123 Crisis and Challenge in American Education (May/June 1988)

"We have met the enemy and he is us," says Pogo, the cartoon character. The enemy is the crisis in our educational system, and "crisis" is the only term that accurately describes the situation. It is every bit as serious, if not more so, than the crisis that followed the Soviet launching of Sputnik in 1957 - and for many of the same reasons. Our failing public education system threatens our position int he global political and business arenas; and this time, it's not just the Soviets or the Japanese who need to be taken seriously as competitors. Every country int he world that graduates better prepared students than we do - and there are a great many of them - has us at a competitive disadvantage.

124 Contact Surface Topology of Worm Gear Teeth (March/April 1988)

Among the various types of gearing systems available to the gear application engineer is the versatile and unique worm and worm gear set. In the simpler form of a cylindrical worm meshing at 90 degree axis angle with an enveloping worm gear, it is widely used and has become a traditional form of gearing. (See Fig. 1) This is evidenced by the large number of gear shops specializing in or supplying such gear sets in unassembled form or as complete gear boxes. Special designs as well as standardized ratio sets covering wide ratio ranges and center distanced are available with many as stock catalog products.

125 Improved Worm Gear Performance with Colloidal Molybdenum Disulfide Containing Lubricants (November/December 1988)

Worm gear speed reducers give the design engineer considerable options, but these gear systems present a challenge to the lubrication engineer. Heat energy generated by the high rate of sliding and friction in the contact zone causes worm gears to be relatively inefficient compared to other gear types. Because worm gears operate under a boundary or near-boundary lubrication regime, a satisfactory lubricant should contain a friction modifier to alleviate these conditions.

126 Technical Calendar (January/February 1989)

March 19-22, 1989. First International Applied Mechanical Systems Design Conference. Convention Center, Nashville, TN. April 25-27, 1989. ASME 5th Annual Power Transmission & Gearing Conference, Chicago, IL

127 The Geometric Design of Internal Gear Pairs (May/June 1990)

The paper describes a procedure for the design of internal gear pairs, which is a generalized form of the long and short addendum system. The procedure includes checks for interference, tip interference, undercutting, tip interference during cutting, and rubbing during cutting.

128 Dynamic Loads in Parallel Shaft Transmissions Part 1 (March/April 1990)

Recently, there has been increased interest in the dynamic effects in gear systems. This interest is stimulated by demands for stronger, higher speed, improved performance, and longer-lived systems. This in turn had stimulated numerous research efforts directed toward understanding gear dynamic phenomena. However, many aspects of gear dynamics are still not satisfactorily understood.

129 Compter-Aided Spur Gear Tooth Design: An Application-Driven Approach (November/December 1989)

This article discusses an application driven approach to the computer-aided sizing of spur gear teeth. The methodology is bases on the index of tooth loading and environment of application of the gear. It employs handbook knowledge and empirical information to facilitate the design process for a novice. Results show that the approach is in agreement with the textbook data. However, this technique requires less expert knowledge to arrive at the conclusion. The methodology has been successfully implemented as a gear tooth sizing module of a parallel axis gear drive expert system.

130 Technical Calendar (March/April 1989)

March 19-22, 1989. first International Applied Mechanical Systems Design Conference. Convention Center, Nashville, TN. March 28-30, 1989. Gear Design Seminar, University of Northern Iowa

131 Automated Acoustic Intensity Measurements and the Effect of Gear Tooth Profile on Noise (March/April 1988)

The NASA Lewis Research Center investigated the effect of tooth profile on the acoustic behavior of spur gears through experimental techniques. The tests were conducted by Cleveland State University (CSU) in NASA Lewis' spur gear testing apparatus. Acoustic intensity (AI) measurements of the apparatus were obtained using a Robotic Acoustic Intensity Measurement System (RAIMS). This system was developed by CSU for NASA to evaluate the usefulness of a highly automated acoustic intensity measurement tool in the reverberant environment of gear transmission test cells.

132 The Relationship of Measured Gear Noise to Measured Gear Transmission Errors (January/February 1988)

Vehicle gear noise testing is a complex and often misunderstood subject. Gear noise is really a system problem.(1) most gearing used for power transmission is enclosed in a housing and, therefore, little or no audible sound is actually heard from the gear pair.(2) The vibrations created by the gears are amplified by resonances of structural elements. This amplification occurs when the speed of the gear set is such that the meshing frequency or a multiply of it is equal to a natural frequency of the system in which the gears are mounted.

133 Curvic Coupling Design (November/December 1986)

Curvic Couplings were first introduced in 1942 to meet the need for permanent couplings and releasing couplings (clutches), requiring extreme accuracy and maximum load carrying capacity, together with a fast rate of production. The development of the Curvic Coupling stems directly from the manufacture of Zerol and spiral bevel gears since it is made on basically similar machines and also uses similar production methods. The Curvic Coupling can therefore lay claim to the same production advantages and high precision associated with bevel gears.

134 Tooth Strength Study of Spur Planet Gears (September/October 1986)

In the design of any new gear drive, the performance of previous similar designs is very carefully considered. In the course of evaluating one such new design, the authors were faced with the task of comparing it with two similar existing systems, both of which were operating quite successfully. A problem arose, however, when it was realized that the bending stress levels of the two baselines differed substantially. In order to investigate these differences and realistically compare them to the proposed new design, a three-dimensional finite-element method (FEM) approach was applied to all three gears.

135 Technical Calendar (July/August 1986)

October 5-8, 1986 AGMA Fall technical Conference & Gearing Exhibit September 17-19, 1986 Ohio State University Gear Noise Seminar November 11-13, 1986 SME Gear Processing and Manufacturing Clinic November 19-21, 1986 Seminar: Gear System Design for Minimum Noise

136 IMTS 1986 - The World of Manufacturing Technology (July/August 1986)

September 3-11 the 1986 International Machine Tool Show, "The World of Manufacturing Technology", will be held at the McCormick Place Exposition Center in Chicago. More that 1000 exhibits from over thirty countries are planned. These exhibits will present a complete range of machine-tool products from 2-story high presses to complete manufacturing systems, lathes, lasers, CAD/CAM systems and robotics.

137 Checking Large Gears (March/April 1987)

Gear manufacturing schedules that provide both quality and economy are dependent on efficient quality control techniques with reliable measuring equipment. Given the multitude of possible gear deviations, which can be found only by systematic and detailed measuring of the gear teeth, adequate quality control systems are needed. This is especially true for large gears, on which remachining or rejected workpieces create very high costs. First, observation of the gears allows adjustment of the settings on the equipment right at the beginning of the process and helps to avoid unproductive working cycles. Second, the knowledge of deviations produced on the workpiece helps disclose chance inadequacies on the production side: e.g., faults in the machines and tools used, and provides an opportunity to remedy them.

138 Influence of Geometrical Parameters on the Gear Scuffing Criterion - Part I (March/April 1987)

The load capacity rating of gears had its beginning in the 18th century at Leiden University when Prof. Pieter van Musschenbroek systematically tested the wooden teeth of windmill gears, applying the bending strength formula published by Galilei one century earlier. In the next centuries several scientists improved or extended the formula, and recently a Draft International Standard could be presented.

139 Finishing of Gears by Ausforming (November/December 1987)

Almost all machines or mechanical systems contain precision contact elements such as bearings, cams, rears, shafts, splines and rollers. These components have two important common requirements: first, they must possess sufficient mechanical properties, such as, high hardness, fatigue strength and wear resistance to maximize their performance and life; second, they must be finished to close dimensional tolerances to minimize noise, vibration and fatigue loading.

140 S1 Units Measurements and Equivalencies (September/October 1987)

Throughout the history of civilization attempts have been made to limit the number of the measuring systems in use with the result that today only two systems, English and metric, are practiced in the industrial nations. Globally, the metric system has been gaining ground, and the English system has been losing it. As of 1986, only the United States, Burma and Brunei remain uncommitted to metric conversion in the sense that no government controlled deadlines for the conversion have been established.

141 Cutting Fluid Selection and Process Controls for the Gear Manufacturing Industry (July/August 1987)

The last decade has been a period of far-reaching change for the metal working industry. The effect of higher lubricant costs, technical advances in machine design and increasing competition are making it essential that manufacturers of gears pay more attention to testing, selecting and controlling cutting fluid systems. Lubricant costs are not a large percentage of the process cost relative to items such as raw materials, equipment and labor, and this small relative cost has tended to reduce the economic incentive to evaluate and to change cutting fluids.

142 Economics of CNC Gear Hobbing (March/April 1987)

NC and CNC metal cutting machines are among the most popular machine tools in the business today, There is also a strong trend toward using flexible machining centers and flexible manufacturing systems. The same trend is apparent in gear cutting. Currently the trend toward CNC tools has increased, and sophisticated controls and peripheral equipment for gear cutting machines are now available; however, the investment in a CNC gear machine has to be justified on the basis of economic facts as well as technical advantages.

143 Comparative Load Capacity Evaluation of CBN-Finished Gears (May/June 1990)

Cubic boron nitride (CBN) finishing of carburized gearing has been shown to have certain economic and geometric advantages and, as a result, it has been applied to a wide variety of precision gears in many different applications. In critical applications such as aerospace drive systems, however, any new process must be carefully evaluated before it is used in a production application. Because of the advantages associated with this process, a test program was instituted to evaluate the load capacity of aerospace-quality gears finished by the CBN process as compared to geometrically identical gears finished by conventional grinding processes. This article presents a brief description of the CBN process, its advantages in an aerospace application, and the results of an extensive test program conducted by Boeing Helicopters (BH) aimed at an evaluation of the effects of this process on the scoring, surface durability, and bending fatigue properties of spur gears. In addition, the results of an x-ray diffraction study to determine the surface and subsurface residual stress distributions of both shot-peened and nonshot-peened CBN-ground gears as compared to similar conventionally ground gears are also presented.

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17 Measuring System Goes Wireless (July 14, 2010)
The MikroCAD Lite measuring system from GFMesstechnik is now available without a PC, so all data acquisition and evaluation is performe... Read News

18 ECM Process Deburrs Injection System Components (August 9, 2010)
Deburring may not be a core process in machining, but it is still considered a necessary evil. Although other machining operations have b... Read News

19 Big Kaiser 318 Series–A Complete Tooling System (February 11, 2011)
Big Kaiser has introduced the new, large diameter Kaiser 318 Series-a complete tooling system supporting a variety of aluminum and steel ... Read News

20 Vertical Honing System Covers Wide Range of Work (February 4, 2011)
Sunnen's SV-1005 series vertical CNC honing system with integrated air gaging system provides closed-loop control of tool size, along... Read News

21 Inductoheat Ships Induction Hardening and Tempering System (December 6, 2010)
Inductoheat, Inc., a leading induction heating equipment manufacturer, recently shipped an induction hardening and tempering system to a ... Read News

22 China Spends 2.5 Million on CNC Helical Profile Milling System (April 14, 2011)
A major Chinese compressor manufacturer recently ordered a machine from Holroyd Precision of Milnrow, Lancashire to be used for the rough... Read News

23 Honing System Offers Increased Part Capacity (April 19, 2011)
The new all-electric HTA hone from Sunnen brings increased part capacity and stroker torque to applications such as bore resurfacing of h... Read News

24 BIG Kaiser Introduces Twin Cutter Boring System (June 8, 2011)
BIG Kaiser's 319 SW series is an exceptionally rigid, new style, twin cutter rough boring system. These corrosion-resistant boring he... Read News

25 Duo Plus Boasts Efficient Grip System (April 26, 2011)
One of the most important keys to success in modern workpiece production is efficiency. Machines are supposed to perform more than just o... Read News

26 Big Kaiser Releases ER Collet Chuck System (November 17, 2010)
Big Kaiser has recently introduced the Mega ER Grip, a new premium ER collet chuck system featuring a runout accuracy of .00012" (th... Read News

27 Gleason Introduces 350GMS Inspection System (November 2, 2010)
Complete inspection of gears as large as 350 mm in diameter now can be performed up to 40 percent faster (gear design dependant... Read News

28 Veeco to Display Surface Metrology System at IMTS (September 8, 2010)
In booth# E-5439, Veeco Instruments Inc. will display its NPFLEX 3-D Metrology System for characterizing surfaces previously too difficul... Read News

29 RoboMax System Automates Quality Control (August 27, 2010)
The RoboMax system, developed by Carl Zeiss, does not require an operator and can run fully automatically 24 hours a day, 7 days a week. ... Read News

30 Gleason Introduces Gleason Metrology Systems (September 10, 2010)
Gleason Corporation recently announced that it has changed the name of its subsidiary in West Carrollton, Ohio from Gleason M&M Preci... Read News

31 Adams Company Invests in Gear Measurement System (October 7, 2010)
The Adams Company, a custom manufacturer of bevel, helical, spur, worm gears and shafts, are continuing to acquire the latest equipm... Read News

32 Heimatec Releases Flexible Tool Adapter System (October 28, 2010)
Heimatec, a manufacturer of live tools, angle heads and multi-spindle drill heads, recently announced the availability of its newest... Read News

33 Gleason Offers Upgrade Package for Inspection Systems (October 18, 2010)
Early models of Gleason's GMM SIGMA series of analytical gear inspection systems can now be equipped with an upgrade package that com... Read News

34 Northstar Aerospace Receives Contract for New Drive System Development (August 30, 2007)
Northstar Aerospace was awarded a $4.5 million development contract from The Boeing Co. for its Enhanced Rotor Rotorcraft Drive System (E... Read News

35 Sunnen’s SV-310 Bore Sizing System Designed for Small Engines, Compressors (August 21, 2007)
Sunnen's new SV-310 vertical CNC honing system combines a choice of tooling options, large work envelope, and 762mm/30" str... Read News

36 SEW-Eurodrive Introduces New Food Industry Drive System (April 29, 2005)
The Food Industry Option Package from SEW-Eurodrive is a drive system with specialized components to meet the damp conditions and chemica... Read News

37 Aerotech Introduces New Gantry System (April 13, 2005)
The ASGS1000 Series Cartesian gantry system from Aerotech is designed for a range of automation platforms like high-speed pick-and-place,... Read News

38 Bock Workholding Introduces New Triangular Workholding System for Machining Centers (April 13, 2005)
The Bock TriSystem workholding system, a triangular, six-station workholding system allows a greater range of tool access angles on horiz... Read News

39 Mahr Federal Unveils Larger and More Flexible Measurement System (January 6, 2006)
The new MarForm MMQ 400 Formtester from Mahr Federal is a ground-up redesign which is more robust, less sensitive to environmental influe... Read News

40 GKS Inspection Systems Expands In-House Measurement Capabilities (January 18, 2006)
GKS Inspection Services, Inc., a division of Laser Design, Inc., has expanded its Detroit-area dimensional inspec... Read News

41 Allegro MicroSystems New Motor Driver Completes Product Family (April 4, 2006)
Allegro MicroSystems announced a new DMOS full-bride motor driver to complement their parallel input DC motor driver family. Designed... Read News

42 HD Systems Merges with Harmonic Drive Technologies (February 6, 2006)
HD Systems Inc. and Harmonic Drive Technologies, Nabtesco Inc. have merged, effective Jan. 1, 2006. The newly formed joint companny wi... Read News

43 New Process Monitoring System from Marposs (April 13, 2005)
A new tool and process monitoring system from Marposs is designed to provide continuous monitoring of metalworking processes through seve... Read News

44 New Gear Drive System from ASI Technologies (April 12, 2005)
The MK400 Series transaxle from ASI Technologies combines the precision of a single piece casting, which can improve the accuracy of gear... Read News

45 New Size 17 Gearhead from HD Systems (February 2, 2005)
The Quantum Series from HD Systems is the highest torque capacity harmonic gearhead that the company has ever produced. According to H... Read News

46 New Gear Inspection System from M&M Precision (January 4, 2005)
The new in-line, in-process inspection equipment from M&M Precision is designed around a completely modular concept, allowing for ease of... Read News

47 New CMM System from Mitutoyo (December 16, 2003)
The new Mitutoyo CMM auto body system is a large machine configured around a single or optional dual, horizontal CNC/CMM three-axis probe... Read News

48 St. Denis Promoted at HD Systems (February 3, 2005)
Brian St. Denis was promoted to vice president of HD Systems from his previous position as engineering manager. According to the ... Read News

49 New High-Speed Inspection System from Renishaw (February 9, 2005)
Introduced at EMO, the Renscan5 high-speed inspection system from Renishaw delivers part inspection speeds up to 20 times faster than con... Read News

50 IMPCO Machine Tools Introduces New Laser Checking System (April 12, 2005)
The new OPTI-Scan Class II CE-certified laser heads from IMPCO Machine Tools are designed to perform final inspection of precisely machin... Read News

51 American Stress Technologies Introduces New Inspection System (February 15, 2005)
For the gear manufacturer plagued with nightmares about the possibility of grinding damage, GearScan 600 from American Stress Technologie... Read News

52 Bosch and Getrag Collaborate on Hybride Systems with Dual Clutch Transmissions (April 5, 2006)
GETRAG and Bosch signed a cooperative agreement covering the development and marketing of parallel hybrid systems in conjunction with dua... Read News

53 Kinefac Introduces New Automated Production System (April 6, 2006)
Kinefac is introducing a new Robo-Roller, which is a quick changeover, automated production system for rolling threads, knurls, worms and... Read News

54 Newage Testing’s Microhardness System Contains Multi-Specimen Fixture and Positioning Tables (February 14, 2007)
Newage Testing Instruments' introduced the new model CAMS-MSO multi-specimen microhardness testing system. The system can handle... Read News

55 Schott Systems’ New Video Highlights Bending Capabilities (February 8, 2007)
One of the newest features of Schott Systeme advanced 3D modeling tools included within its CAD CAM software is the 'Pictures by PC ... Read News

56 Marposs Announces Plans to Release New Probing System at WESTEC (January 16, 2007)
Marposs Corp. will showcase its new Mida E83 probing system with optical transmission for CNC machining centers and milling machines boot... Read News

57 Moventas Launches Wind Turbine Condition Management System (May 24, 2007)
Moventas introduced its latest wind turbine condition management system at Hannover Messe 2007. The system focuses on the gearbox and a... Read News

58 mG miniGears Installs Furnace Loading System (June 25, 2007)
mG miniGears installed a furnace loading system in its powder metal department to avoid defects, especially for gears where small damage of the... Read News

59 Parker Hannifin’s Actuators Eliminate Need for In-House Positioning System (August 9, 2007)
The PROmech actuators from Parker Hannifin are designed for analytical, OEM and lab instrument manufacturers.The actuators come completel... Read News

60 Inductoheat Ships Five IROSS Frequency Systems (August 2, 2007)
Inductoheat Inc. shipped five IROSS induction line frequency systems to supplier of engine crankshaft vibration dampers.Units are designe... Read News

61 Inductoheat’s Heat Treating System Compatible with Numerous Power Supplies (January 16, 2007)
The InductoScan modular heat treat system from Inductoheat is designed to increase versatility, reduce maintenance and installation cost... Read News

62 Mahr Federal Introduces Universal Optical Measuring System (April 27, 2006)
The Helio-Scope from Mahr is a universal optical measuring system designed to facilitate precision control of complex turned parts. Wi... Read News

63 PCB Piezotronics’ New Rotary Torque Sensor System (April 12, 2006)
The rotary torque sensor system from the Force/Torque Division of PCB Piezotronics is designed for automotive driveline and powertrain dy... Read News

64 Drake’s Newest Thread Grinder Utilizes Robot Load/Unload System (April 11, 2006)
The GS: TE-LM thread grinder from Drake Manufacturing is fitted with a robot load/unload system that provides maximum throughput for high... Read News

65 Schott Systeme Streamlines Gear Design Software (April 15, 2006)
Schotte Systeme published a new video outlining how one single universal function has been designed to consolidate both 2D and 3D move... Read News

66 Engineered Tools Opens Gear Cutting Systems Division (April 15, 2006)
Engineered Tools Corp. of Caro, MI, has introduced its new gear cutting system division. Cutter body repair will take place at ETC... Read News

67 REpower Systems and Essar Group To Partner in Indian Wind Energy Market (April 22, 2006)
RREpower Systems has entered into a licensed agreement with India's Essar Group to facilitate entry into that country's growin... Read News

68 MAG Industrial Automation Systems Receives American Axle Supplier Award (April 17, 2006)
The Powertrain Technologies Group of MAG Industrial Automation Systems of Sterling Heights, Michigan, has received a Supplier Recogniti... Read News

69 Non-Coplanar Connecting Rod System Does the Work of Three Machines (July 21, 2011)
C & B Machinery of Livonia, Michigan has improved productivity and flexibility of their double disc non-coplanar connecting rod grind... Read News

70 IPTEX 2012 Booth Preview: Dontyne Systems Booth A25 (January 17, 2012)
Dontyne software and consultancy services are aimed at the efficient design and manufacture of geared systems and their use in the transm... Read News

71 Ipsen Awarded Patent on Vacuum Loading System (June 6, 2014)
Ipsen was recently awarded U.S. Patent No. 8,662,888 B2 for the development of a new loading system. Chief Engineer Craig Moller, the nam... Read News

72 EMAG Showcases Manufacturing Systems at Technology Days (June 3, 2014)
To celebrate their 20th anniversary, EMAG USA opened its doors to manufacturers and vendors to join them for their open house Technology ... Read News

73 Gleason Acquires Distech Systems (June 2, 2014)
Gleason Corporation recently announced that it has acquired Distech Systems Inc., located in Rochester, NY. Distech is a leader in the d... Read News

74 Vomat Introduces Flexible Filtration System (July 8, 2014)
In tool grinding all individual processing steps are part of a coherent value chain. Therefore it is important that the filtration proces... Read News

75 Dontyne Systems Expands Office Space (August 18, 2014)
Dontyne Systems continues to expand its customer base across the world and has secured work for development of customer specific software... Read News

76 MHI Develops ‘Super Skiving System’ for High-speed Gear Cutting (November 24, 2014)
Mitsubishi Heavy Industries, Ltd. (MHI) has completed development of the “Mitsubishi Super Skiving System” for machining inte... Read News

77 Oerlikon Drive Systems to present 'Shifting Solutions' at Italian conference (November 24, 2014)
"Shifting Solutions" and the new Fast Track Prototyping and Small Batch Manufacturing Facility from Oerlikon Drive Systems will... Read News

78 Sunnen Releases HTE Honing System (May 22, 2014)
Sunnen’s new HTE honing system, the company’s most cost-effective small-diameter hone, produces ideal bore geometry and surface finish, while eliminating problems from bad tool-to-part alignment... Read News

79 Dörken Introduces New Coating System (May 21, 2014)
Dörken MKS-Systeme GmbH & Co. KG, Herdecke, Germany and parent company of Dörken Corporation USA located here has introduced a new coating system that provides fasteners with both high performance and durable black corrosion protection... Read News

80 Abtex Offers Tri-Ten Deburring System (March 14, 2014)
Abtex Corporation has designed and built the largest and most technologically advanced Tri-Ten deburring system in its 34 year history... Read News

81 R&P Metrology Offers Special Measuring System (March 7, 2014)
Responding to specific customer requirements, R&P Metrology GmbH announced a new model in their full line of custom metrology systems... Read News

82 Walter Introduces Cut SX System (February 11, 2014)
Walter has introduced the Walter Cut SX grooving and parting system, a flexible new approach for both turning and milling operations that... Read News

83 PTG Offers Profile Management System (March 28, 2014)
With technologies such as the Zenith 400 Rotor Grinding Center and the Holroyd TG Series of rotor grinding machines, Precision Technologies Group company, Holroyd Precision Limited... Read News

84 Mitutoyo Offers Sales and Support for Renishaw Probe System (April 4, 2014)
Mitutoyo America Corporation is pleased to announce sales and support of the Renishaw PH20 probe system with the Crysta-Apex S500/700/900 series... Read News

85 Gear Grinders Find Value in RUF Briquetting Systems (May 7, 2014)
Briquetting is a way to regain value from the materials you already have, and gear grinding operations are finding the value they thought was lost in their grinding sludge... Read News

86 GF Machining Announces System 3R Transformer (April 24, 2014)
GF Machining Solutions has announced the System 3R Transformer, a modular automation system designed to integrate with a wide variety of technologies... Read News

87 David Brown Gear Systems Opens Facility in Philippines (November 26, 2014)
David Brown Gear Systems, a supplier of industrial gearboxes and aftermarket services for applications in the world’s core ind... Read News

88 KISSsoft Adds KISSsys System (December 15, 2014)
KISSsys is a system add-on to KISSsoft, where complete transmissions and drive trains can be modeled (SYS module). The gearbox package GP... Read News

89 ALD-Holcroft to Provide SyncroTherm Heat Treating System to Woodward (May 15, 2015)
ALD-Holcroft (Wixom, MI) recently entered into an agreement with Woodward, Inc. (Fort Collins, CO) to provide a fully-integrated SyncroTh... Read News

90 Kwik Mark Releases Portable Handheld Dot Peen Marking System (May 15, 2015)
The Micro Mark portable dot peen marker from Kwik Mark Inc. features a compact (3" x 5" x 6") head size, and a 1.0" x... Read News

91 Oerlikon's Drive Systems Segment Inaugurates Third Plant In India (April 28, 2015)
Oerlikon’s Drive Systems Segment recently inaugurated its third plant at Sanand in Gujarat, India. This is the 10th production faci... Read News

92 Schunk EGN Safety Gripping System is Continuously Powered (June 18, 2015)
The EGN Safety is the first certified safety gripping system from Schunk for use with human and robot interaction. It is certified in acc... Read News

93 Exsys to Showcase Compact Base Holder and Preci-Flex Tooling Systems at WESTEC (July 23, 2015)
At WESTEC 2015, Exsys Tool, Inc. will showcase advanced manufacturing technologies in booth 1919. Amongst other products, Exsys will... Read News

94 EMAG VT and VL Machines Feature Integrated O-automation System for Transporting Workpieces (August 12, 2015)
At Gear Expo 2015, EMAG USA will feature manufacturing systems for precision metal components alongside the North American premier of its... Read News

95 CD-adapco Speed Machine Design Tool Integrated into Star-CCM Modeling System (July 28, 2015)
CD-adapco recently integrated Speed, an electric machine design tool, with Star-CCM+, an all-in-one tool that models heat transfer, fluid... Read News

96 Gleason to Introduce 300GMSP Analytical Gear Inspection System (April 6, 2015)
Gleason Corporation will introduce its latest gear metrology innovation at the upcoming Control Show in Stuttgart, Germany, from May 5-8.... Read News

97 Sunnen Introduces SSH-1680 Honing System (March 25, 2015)
Sunnen’s new SSH-1680 honing system makes the efficiency, accuracy and consistency of power-stroke honing, affordable to&... Read News

98 Solar Atmosphere's Launch Abort System Aids 'Orion' Launch (January 9, 2015)
On Friday, Dec. 5, 2014, NASA’s new spacecraft Orion launched successfully from Cape Canaveral and completed its first test flight.... Read News

99 Gleason Announces 175GMS Analytical Gear Inspection System (December 15, 2014)
Gleason Corporation, a developer and manufacturer of gear production machinery and related equipment, recently announced the introdu... Read News

100 Rosler Introduces MAX-IMP System (January 30, 2015)
Rosler recently introduced the new, patented MAX-IMP System. A pneumatically operated sensor is mounted in the peripheral area and d... Read News

101 Birchwood Technologies Introduces Ion Exchange System (February 4, 2015)
Birchwood Technologies Ion Exchange System purifies rinse water for reuse in metal finishing systems. It is designed for process lines ut... Read News

102 Timken Power Systems Facility Achieves ISO 9001:2008 Certification (March 4, 2015)
The Timken Company recently announced its power systems service facility in Princeton, WV, has earned ISO 9001:2008 Quality Manageme... Read News

103 GWJ Technology Launches New Version of System Calculation for Gearboxes (March 2, 2015)
GWJ Technology GmbH, a manufacturer of calculation software for machine elements and gears, recently launched a new version of its system... Read News

104 Guyson Corp. Acquires Automated Blasting Systems (December 9, 2013)
The Guyson Corporation of U.S.A. has announced the acquisition of all assets of Automated Blasting Systems, Inc., of South Windsor, CT. A... Read News

105 Gleason Offers Retrofit Package for Inspection Systems (November 25, 2013)
Gleason Corporation’s GMM and GMS Series of Analytical Gear Inspection Systems currently in service can be easily updated with a ne... Read News

106 Marposs Introduces Touch Probe System (October 10, 2012)
Marposs Corp. announces the new Mida T25P ultra-compact, high accuracy touch probe for machine tools with piezoelectric technology. Altho... Read News

107 Mahr Federal Adds Wireless System to Indicators (August 29, 2012)
Mahr Federal has added a new MarConnect Integrated Wireless data transmission system to its family of MarCator Digital Indicators at pric... Read News

108 IMTS Preview: Dontyne Systems (August 17, 2012)
Dontyne Systems has developed a Gearbox Model to simulate deflection of a fully coupled system of gear, shaft and bearing components incl... Read News

109 Mitutoyo Measuring System Inspects Large and Small Workpieces (October 11, 2012)
Mitutoyo America Corporation announces availability of the innovative, new Ko-ga-me measurement head - designed to bring full capability ... Read News

110 Waterjet Service Inc. Changes Name to WSI Waterjet Systems International (November 1, 2012)
WSI Waterjet Systems International (formerly named Waterjet Service Inc.) , the globally established, recommended and trusted designer, m... Read News

111 Dontyne Systems Establishes North American Support Facility (January 31, 2013)
Dontyne Systems, supplier of gear design software and systems, has recently established a North American support facility.  Dr. Mich... Read News

112 AFC Ships Single Row Pusher Furnace System (November 9, 2012)
A manufacturer located in the South Central region of the United States is the recipient of a new AFC-Holcroft Single Row Pusher Furnace... Read News

113 Ingersoll Introduces T-Micro System (June 11, 2012)
Ingersoll Cutting Tools introduces the T-Micro system specifically designed for the machining of very small internal diameters. The T-Mic... Read News

114 IMTS Preview: MC Machinery Systems, Inc. (June 8, 2012)
MC Machinery Systems, Inc., will display several new technologies and product lines at IMTS 2012 (booth N-6825), including the new wire E... Read News

115 Mag Megaflex System Scales Up High Volume Machining (March 27, 2012)
Astraeus Wind Energy's Mag Megaflex machining system has passed its initial supplier qualification by completing "Operation 20&q... Read News

116 Abtex Introduces Machine Compatible Deburring System (March 19, 2012)
Abtex Corporation has expanded its Tri-Ten series of deburring systems to include a model that is designed to accept precision ground par... Read News

117 Ontario Drive and Gear Signs Memorandum with Textron Systems (March 27, 2012)
Textron Systems Canada Inc. recently announced that the company has signed a memorandum of understanding (MoU) with Ontario Drive an... Read News

118 Mahr Federal Displays Metrology Systems at Mfg 4 (April 5, 2012)
Mahr Federal will be featuring the addition of an economical and powerful new skidless surface evaluation system to its MarSurf line of m... Read News

119 Renishaw Introduces Additive Manufacturing Systems (May 16, 2012)
Renishaw's new laser melting additive-metal manufacturing process is capable of producing fully dense metal parts direct from 3-D CAD... Read News

120 Jenoptik Wavemore System Offers High-Accuracy Measurement (May 1, 2012)
The new Jenoptik Wavemove automated surface roughness and contour measuring system includes up to seven CNC axes for complete high-accura... Read News

121 Linamar Purchases AFC-Holcroft Furnace System (February 25, 2013)
Linamar, a multi-national supplier of automotive components, assemblies and castings, has purchased a new Batch Integral Quench System fr... Read News

122 ALD-Holcroft Installs ModulTherm System (March 8, 2013)
ALD-Holcroft, Wixom, MI, has successfully installed and commissioned a Four (4) chamber ModulTherm system; the first of three (3) systems... Read News

123 Ingersoll Offers Modular Milling System (September 9, 2013)
Chip-Surfer from Ingersoll provides a modular milling system for NC, Swiss and live tooling applications. Highlights include interchangea... Read News

124 Vomat Offers Advanced Filtration System (September 4, 2013)
The Vomat FA 480 – 960 series filtration systems process from 120 to 240 US-Gallons per minute and offer dimensions of 55 x 99 x 48... Read News

125 Gear Expo Preview: Dontyne Systems Booth #1052 (August 14, 2013)
Genesis Partners has developed and tested a non-involute tooth form that projects up to a 40 percent improvement in various physical and ... Read News

126 MecWash System Boasts High Contaminant Removal Rate (September 10, 2013)
MecWash Systems introduces BladeWash aqueous parts washers.  Developed specifically for cleaning the internal cooling channels in tu... Read News

127 Sandvik Expands EH System (October 16, 2013)
October 1st marked the expansion of Sandvik Coromant’s exchangeable-head (EH) system to include a wide assortment of solid carbide ... Read News

128 Forkardt Offers OmniGrip Collet System (November 19, 2013)
Forkardt OmniGrip Collet Systems are flexible, sealed collet heads that interchange in seconds and are available with spindle mounts for ... Read News

129 Gleason Updates 1500GMS Inspection System (November 18, 2013)
Gleason Corporation’s 1500GMS Analytical Gear Inspection System has been updated to deliver improved inspection speeds and offer ma... Read News

130 Mitutoyo Releases Compact Measuring System (June 19, 2013)
Mitutoyo America Corporation announces availability of the innovative, new Ko-ga-me measurement head - designed to bring full capability ... Read News

131 Siemens Supports Diversity through STEM Education (May 29, 2013)
In a survey conducted by U.S. Black Engineer & Information Technology (USBE&IT) magazine, Siemens has been named a “Top Sup... Read News

132 Renishaw System Tests Accuracy of Machine Tools (March 19, 2013)
The new Renishaw XR20-W calibration system measures the angular position of rotary axes to within ±1 arc second, wirelessly, for t... Read News

133 Hardinge Releases FlexC Collet System (March 11, 2013)
Hardinge Inc. announces the release of the 80 mm FlexC vulcanized collet system. The collet chucks mount directly to the machine spindle.... Read News

134 Tool Grind Workholding System Limits Runout (March 20, 2013)
MicroPlus, ANCA's new high accuracy workholding and tool support system, significantly reduces tool runout during grinding, enabling ... Read News

135 Cleaning Technologies Introduces CleanVeyor System (May 7, 2013)
CleanVeyor Ultrasonic parts washer utilizes a combination of spray, immersion, and ultrasonic cleaning technologies and has proven succes... Read News

136 Chinese Company Orders Nitrex Nitriding System (May 28, 2013)
Nitrex Metal received a follow-up order for a nitriding system from Shaoguan Hongda Gear Co. Ltd, a Chinese contract manufacturer of tran... Read News

137 Oelheld Offers Vomat Filtration System (May 23, 2013)
The Vomat FA 480 – 960 series filtration systems process from 120 to 240 US-Gallons per minute. With dimensions of 55 x 99 x 48 inc... Read News

138 Cimcool Cimpulse Metalworking Fluids Formulated for Use in High-Pressure Systems (August 31, 2015)
Milacron Fluid Technologies brand Cimcool recently announced the launch of Cimpulse.Cimpulse 51MP, Cimpulse 45MP and Cimpulse 33MP are ne... Read News