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1 Characteristics of Master Gears (November/December 2006)

The two-flank roll test measures kickout (tooth-to-tooth composite error) and tooth thickness. In this article, it will be shown that measured values vary with the number of teeth on the master gear.

2 Measurement of Involute Master (January/February 2013)

Our experts tackle the topic of measuring involute masters, including both master gears and gear inspection artifacts.

3 Minimizing Backlash in Spur Gears (May/June 1994)

simplified equations for backlash and roll test center distance are derived. Unknown errors in measured tooth thickness are investigate. Master gear design is outlined, and an alternative to the master gear method is described. Defects in the test radius method are enumerated. Procedures for calculating backlash and for preventing significant errors in measurement are presented.

4 A Novel Concept for High Accuracy Gear Calibration (May/June 2005)

The German National Metrology Institute has developed a novel calibration concept that allows for highly accurate calibration of product-like artifacts.

5 Practical Considerations for the Use of Double-Flank Testing for the Manufacturing Control of Gearing - Part I (January/February 2014)

Part I of this paper describes the theory behind double-flank composite inspection, detailing the apparatus used, the various measurements that can be achieved using it, the calculations involved and their interpretation. Part II, which will appear in the next issue, includes a discussion of the practical application of double-flank composite inspection, especially for large-volume operations. Part II covers statistical techniques that can be used in conjunction with double-flank composite inspection, as well as an in-depth analysis of gage R&R for this technique.

6 Industry News (January/February 2017)

News from around the Gear Industry

7 Calibration of Two-Flank Roll Testers (May 2008)

The presence of significant errors in the two-flank roll test (a work gear rolled in tight mesh against a master gear) is well-known, but generally overlooked.

8 Hard Gear Finishing (March/April 1988)

Hard Gear Finishing (HGF), a relatively new technology, represents an advance in gear process engineering. The use of Computer Numerical Controlled (CNC) equipment ensures a high precision synchronous relationship between the tool spindle and the work spindle as well as other motions, thereby eliminating the need for gear trains. A hard gear finishing machine eliminates problems encountered in two conventional methods - gear shaving, which cannot completely correct gear errors in gear teeth, and gear rolling, which lacks the ability to remove stock and also drives the workpiece without a geared relationship to the master rolling gear. Such a machine provides greater accuracy, reducing the need for conventional gear crowning, which results in gears of greater face width than necessary.

9 Hard Finishing By Conventional Generating and Form Grinding (March/April 1991)

The quality of a gear and its performance is determined by the following five parameters, which should be specified for each gear: Pitch diameter, involute form, lead accuracy, spacing accuracy, and true axis of rotation. The first four parameters can be measured or charted and have to be within tolerance with respect to the fifth. Pitch diameter, involute, lead, and spacing of a gear can have master gear quality when measured or charted on a testing machine, but the gear might perform badly if the true axis of rotation after installation is no longer the same one used when testing the gear.

News Items About Master

1 Mastercam Certified for Autodesk Inventor (May 18, 2010)
CNC Software, developer of Mastercam CAD/CAM software, recently announced that its Mastercam X4 CAD/CAM software has been certified for A... Read News

2 Master Fluid Solutions Acquires Wilhelm Dietz GmbH (October 7, 2019)
Master Fluid Solutions announces its acquisition of Wilhelm Dietz GmbH & Co. KG (WEDOLiT) based in Düsseldorf, GermanyMaster Flu... Read News

3 Mastercam’s Latest CNC Software Enhanced to Provide Multi-Axis Toolpaths (April 20, 2006)
The new Maintenance Release 2 (MR2) software from Mastercam introduces new capabilities including multi-axis toolpaths and Mastercam X a... Read News

4 FANUC and Mastercam Collaborate on 5-Axis Post Processor (December 4, 2020)
FANUC and Mastercam have introduced a new post processor designed to optimize 5-axis capabilities in FANUC CNCs. The new post processor a... Read News

5 Master Fluid Solutions Launches HyperSol 888NXT for Aerospace Applications (July 6, 2020)
Global leader in metalworking fluids, Master Fluid Solutions, has launched a new product tailored to the unique and complex needs of the ... Read News

6 Grind Master Offers Latest Machine Technology at IMTEX 2020 (January 20, 2020)
Grind Master Machines Pvt. Ltd. will showcase a variety of products and technologies during IMTEX 2020 in Hall 4, Booth #C104.  ... Read News

7 EMO Hannover Preview: Grind Master (August 19, 2019)
Grind Master offers a wide range of belt grinding and brushing machines which are used for precision deburring of flat punched and fine b... Read News

8 Kwik Mark Tag Master 3 Dot Peen Marking System Feeds Tags from Top (October 24, 2016)
The new Tag Master 3 feeder was developed to eliminate the problematic tag feeding issues of escaping tags from the bottom of the magazin... Read News

9 Seco Warwick Delivers CaseMaster Evolution (December 22, 2015)
Ponar Wadowice S.A., a part of Ponar Silesia, recently signed a contract for the delivery of a Seco/Warwick CaseMaster Evolution (CME) lo... Read News

10 Ingersoll Offers Form-Master R Series (August 3, 2020)
Ingersoll Cutting Tools introduces double-sided inserts in the Form-Master R series. These all new 10 mm and 16 mm IC inserts and cutters... Read News

11 Seco-Warwick Receives CaseMaster Evolution Order (October 7, 2013)
Seco/Warwick has received an order for a two CaseMaster Evolution vacuum carburizing furnace line that includes washer/tempering unit, lo... Read News

12 Seco-Warwick Delivers CaseMaster Evolution (August 19, 2013)
Seco/Warwick Corp. has provided the equipment for a worldwide aerospace manufacturer in the United States. The CaseMaster Evolution ... Read News

13 Ipsen Ships MetalMaster Furnaces (November 16, 2012)
Two MetalMaster furnaces were shipped to U.S. customers – a commercial heat treater and a heat exchanger manufacturer. Both furnace... Read News

14 Seco Warwick Receives CaseMaster Order (May 17, 2012)
Seco/Warwick Corp. has received an order for two CaseMaster Evolution Vacuum Carburizing furnaces with washers, tempers and full data ret... Read News

15 Samputensili Master Gears Personalized to Customer or DIN Specifications (April 12, 2006)
Samputensili has introduced a range of master gears to determine work gear accuracy and setting masters to adjust checking equipment. ... Read News

16 Suhner Introduces Multi-Master Flex Machining (December 18, 2013)
Bulky part machining can often become very difficult to integrate into a manufacturing process, when attempting to ... Read News

17 Seco Releases Next Generation Minimaster (September 30, 2011)
Seco introduced its original Minimaster line of end mills with replaceable carbide inserts nearly 25 years ago. Today, the company is pre... Read News

18 Sandvik Coromant Introduces CoroPlus Suite of Solutions for Mastercam 2018 (July 10, 2017)
In a move designed to greatly improve efficiency and quality in CAM operations, the CoroPlus ToolLibrary and PrimeTurning ... Read News

19 Mahr’s Air Gage Uses Single- or Dual-Master Air Tooling (March 10, 2006)
The Universal Dimensionair line of air gages from Mahr Federal combines the performance of a single-master air gage system with the abili... Read News