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Technical Briefs

A Method for the Preliminary Geometric Design of Gear Tooth Profiles With Small Sliding Coefficients

[+] Author and Article Information
Jian Wang1

Department of Mechanical Engineering, Xiamen University of Technology, Xiamen 361024, P. R. Chinawangj@xmut.edu.cn

Shanming Luo

Department of Mechanical Engineering, Xiamen University of Technology, Xiamen 361024, P. R. Chinas.luo@hotmail.com

Yue Wu

School of Engineering, Computing and Mathematics, University of Exeter, Exeter EX4 4QF, UKyue.wu@exeter.ac.uk

1

Corresponding author.

J. Mech. Des 132(5), 054501 (Apr 29, 2010) (8 pages) doi:10.1115/1.4001410 History: Received April 20, 2009; Revised March 08, 2010; Published April 29, 2010; Online April 29, 2010

Abstract

This paper proposes a method of the preliminary geometric design for gear tooth profiles based on given sliding coefficients. A design procedure is developed and a simplified derivation of the mathematical model of tooth profiles is presented. The characteristics of the gear drive designed by the proposed method are analyzed. A comparison study on the sliding coefficient with the involute gear drive is also carried out in this work. The effects of parameters, including tooth number and modulus, on the characteristics of the gear drives are studied. The contact and bending stresses of this new drive are also analyzed. A manufacturing method of the proposed gear is studied, and a simulation of the machining process demonstrates its feasibility. The results show that the designers can design tooth profiles according to required sliding coefficients by the proposed method.

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Figures

Figure 8

Machining simulation of the proposed gear

Figure 1

Definition of the sliding arc

Figure 2

Coordinate systems used for meshing analysis

Figure 3

Flow chart of the design procedure

Figure 4

The proposed tooth profile and involute tooth profile: (a) tooth profiles of the driving gear and (b) tooth profiles of the driven gear

Figure 5

Stress distribution of the proposed gear drive

Figure 6

Stress distribution of the involute gear drive

Figure 7

The involute gear produced at the first stage and the final gear with the proposed profile

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