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Pentagear Products
Pentagear, a builder of special machines and automated systems for over 50 years, offers the ND430 Next Dimension® Gear Measurement System. The Next Dimension® has been designed with the latest in motion control technology.

Articles About 3-D


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1 Meshing of a Spiral Bevel Gear Set With 3-D Finite Element Analysis (March/April 1997)

Recent advances in spiral bevel gear geometry and finite element technology make it practical to conduct a structural analysis and analytically roll the gear set through mesh. With the advent of user-specific programming linked to 3-D solid modelers and mesh generators, model generation has become greatly automated. Contact algorithms available in general purpose finite element codes eliminate the need for the use and alignment of gap elements. Once the gear set it placed in mesh, user subroutines attached to the FE code easily roll it through mesh. The method is described in detail. Preliminary result for a gear set segment showing the progression of the contact line load is given as the gears roll through mesh.

2 Need a Snack - Try 3D Printing Technology (June/July 2013)

3-D printing offers a new way to create food, even gear-shaped snacks are now available via this new technology.

3 Local 3-D Flank Form Optimizations for Bevel Gears (September/October 2003)

Optimizing the running behavior of bevel and hypoid gears means improving both noise behavior and load carrying capacity. Since load deflections change the relative position of pinion and ring gear, the position of the contact pattern will depend on the torque. Different contact positions require local 3-D flank form optimizations for improving a gear set.

4 3-D Finite Element Analysis of Long-Fiber Reinforced Composite Spur Gears (March/April 2002)

This article describes a method and a computer program that were developed for 3-D finite element analysis of long-fiber reinforced composite spur gears, in which long fibers are arranged along tooth profiles. For such a structure, the gear is composed of two regions; namely the long fiber reinforced and the chopped-fiber reinforced regions.

5 Solid Model Generation of Involute Cylindrical Gears (September/October 2003)

This paper presents approximate and accurate methods to generate solid models of involute cylindrical gears using Autodesk Inventor 3-D CAD software.

6 Performance Analysis of Hypoid Gears by Tooth Flank Form Measurement (July/August 2002)

The traditional way of controlling the quality of hypoid gears' tooth flank form is to check the tooth flank contact patterns. But it is not easy to exactly judge the tooth flank form quality by the contact pattern. In recent years, it has become possible to accurately measure the tooth flank form of hypoid gears by the point-to-point measuring method and the scanning measuring method. But the uses of measured data of the tooth flank form for hypoid gears have not yet been well developed in comparison with cylindrical involute gears. In this paper, the tooth flank form measurement of generated face-milled gears, face-hobbed gears and formulate/generated gears are reported. The authors discuss the advantages and disadvantages of scanning and point-to-point measuring of 3-D tooth flank forms of hypoid gears and introduce some examples of uses of measured data for high-quality production and performance prediction.

7 Design Unit Evaluating New Software from SMT (January/February 2007)

MASTA 4.5.1 models complete transmissions and includes 3-D stress analysis.

8 Optimizing Gear Geometry for Minimum Transmission Error, Mesh Friction Losses and Scuffing Risk Through Computer- Aided Engineering (August 2010)

Minimizing gear losses caused by churning, windage and mesh friction is important if plant operating costs and environmental impact are to be minimized. This paper concentrates on mesh friction losses and associated scuffing risk. It describes the preliminary results from using a validated, 3-D Finite Element Analysis (FEA) and Tooth Contact Analysis (TCA) program to optimize cylindrical gears for low friction losses without compromising transmission error (TE), noise and power density. Some case studies and generic procedures for minimizing losses are presented. Future development and further validation work is discussed.

9 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.

News Items About 3-D

1 KISSsoft Releases 3-D Variant Skin Model (November 17, 2011)
Crossed helical gears are helical gears that are mounted on crossed axes. The shaft angle is usually Σ = 90 degrees. In contrast to... Read News

2 Ipsen Collaborates with ExOne on 3-D Printing Solutions (June 21, 2013)
When constantly out-doing the competition is the name of the game, meaningful collaborations are of the utmost importance. Ipsen is pleas... Read News

3 Local Motors to Deliver 3-D Printed Electric Vehicle at IMTS 2014 (March 3, 2014)
Local Motors, Inc. recently announced that the Association for Manufacturing Technology (AMT) will be the first customer for its previous... Read News