Technical Briefs

Design Criterion for the Space-Curve Meshing Wheel Mechanism Based on Elastic Deformation of the Tines

[+] Author and Article Information
Yang-Zhi Chen1

School of Mechanical and Automobile Engineering, South China University of Technology, Guangzhou 510640, P.R. Chinameyzchen@scut.edu.cn

Qiang Hu, Lei-Hou Sun

School of Mechanical and Automobile Engineering, South China University of Technology, Guangzhou 510640, P.R. China


Corresponding author.

J. Mech. Des 132(5), 054502 (May 17, 2010) (6 pages) doi:10.1115/1.4001535 History: Received October 23, 2009; Revised March 16, 2010; Published May 17, 2010; Online May 17, 2010

The space-curve meshing wheel (SCMW) is a novel mechanical transmission mechanism suitable for small devices. It operates on the principle of space-curve meshing, which is quite different from traditional gearing mechanisms based on the surface meshing principle. Excessive elastic deformation of the tines is one of the main failure modes of the SCMW mechanism. In this study, formulas for elastic deformation and the allowable deformation of the driving tines are deduced and a main design criterion for the SCMW mechanism is established. A calculation example illustrates the concepts and equations presented, and the result for elastic deformation of the driving tines is consistent with that produced by the commercial finite element analysis software.

Copyright © 2010 by American Society of Mechanical Engineers
Topics: Deformation , Design , Wheels
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Figure 1

Transmission mechanism using one SCMW pair

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Figure 2

Coordinates and variables for SCMW kinematics

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Figure 3

Driving tine. (a) Lateral section, (b) neutral axis, and (c) shape.

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Figure 4

Deformation for the contact point of the driving tine along the (a) x-axis, (b) y-axis, and (c) z-axis



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