Geometric Design of Roller Gear Cam Reducers

[+] Author and Article Information
D. M. Tsay, B. J. Lin

Department of Automation Engineering, National Huwei of Technology, Huwei, Yunlin 63208, Taiwan

N. J. Huang

Department of Mechanical Engineering, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan

J. Mech. Des 121(1), 172-175 (Mar 01, 1999) (4 pages) doi:10.1115/1.2829420 History: Received January 01, 1997; Revised November 01, 1998; Online December 11, 2007


A roller gear cam. reducer, composed of a turret with rollers and a globoidal cam, is often used to provide high positioning precision at low cost. In this study, a simple procedure is given to generate the surface of the cam without solving any contact equations. The method is based on rigid body transformations between the cam and the turret roller. Analyses of the pressure angle and the principal curvature of the surface geometry are also accomplished. In addition, contact forces between the roller and cam, input torque, and the reducer efficiency are evaluated. An example of the procedure is given.

Copyright © 1999 by The American Society of Mechanical Engineers
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