Alternative Equation of Meshing for Worm-Gear Drives and Its Application to Determining Undercutting and Reverse Engineering

Author:

Su Xiaogen1,Houser Donald R.1

Affiliation:

1. Department of Mechanical Engineering, The Ohio State University, 206 W. 18th Ave., Columbus, OH 43210

Abstract

An alternative equation of meshing for worm-gear drives is proposed. This equation has advantage over the commonly used equation of meshing when it is used to study the undercutting phenomenon, to perform reverse engineering and to find the meshing area of worm-gear drives. From the new alternative equation, the equations of the boundaries of the three-dimensional meshing area and the limiting line on the worm surface that distinguishes the non-undercut area and the undercut area are derived. [S1050-0472(00)01302-7]

Publisher

ASME International

Subject

Computer Graphics and Computer-Aided Design,Computer Science Applications,Mechanical Engineering,Mechanics of Materials

Reference7 articles.

1. Litvin, F. L., 1994, Gear Geometry and Applied Theory, PTR Prentice Hall.

2. Su, X., and Houser, D. R., 1997, Coordinate Measurement and Reverse Engineering of ZK Type Worm Gearing, AGMA 97FTMS1.

3. Kin, V., 1988, Limitations of Worm and Worm-Gear Surfaces in Order to Avoid Undercutting and Appearance of Envelope of Lines in Contact, AGMA 88FTMS1.

4. Litvin, F. L., and Wang, A. G., 1996, “Local Synthesis and Tooth Contact Analysis of Face-Milled, Uniform Tooth Height Spiral Bevel Gears,” NASA Contractor Report 4757.

5. Colbourne, J. R., 1994, Undercutting in Worms and Worm Gears, AGMA 94FTM1.

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