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RESEARCH PAPERS

Contact Stress Analysis in Ball Screw Mechanism Using the Tubular Medial Axis Representation of Contacting Surfaces

[+] Author and Article Information
Hual-Te T. Huang, B. Ravani

Department of Mechanical and Aeronautical Engineering, University of California-Davis, Davis, CA 95616

J. Mech. Des 119(1), 8-14 (Mar 01, 1997) (7 pages) doi:10.1115/1.2828794 History: Received February 01, 1995; Revised May 01, 1996; Online January 18, 2008

Abstract

A simple method is presented for analysis of contact stresses and deformation conditions between the bearing balls, screw, and nut of the ball screw mechanism. The method is based on representation of contact geometry and curvature analysis of contacting surfaces using a generalization of the medial axis transform (MAT) to tubular surfaces. Simplified Hertzian contact solutions are obtained using the curvature information. The results are approximate but do include the effect of complex thread profiles as a result of the helical grooves and are suitable for mechanical design purposes.

Copyright © 1997 by The American Society of Mechanical Engineers
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