A calculation method for friction coefficient and meshing efficiency of plastic line gear pair under dry friction conditions

Yangzhi CHEN; Yifan LIN

doi:10.1007/s40544-020-0424-x

Friction 2021, 9(6): 1420-1435 https://doi.org/10.1007/s40544-020-0424-x

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Open Access | Issue | Published: 23 November 2020

A calculation method for friction coefficient and meshing efficiency of plastic line gear pair under dry friction conditions

Show Author's Information Hide Author's Information Yangzhi CHEN(

), Yifan LIN

School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China

Keywords:

friction coefficient, dry friction, line gear (LG) pair, meshing efficiency, polyoxymethylene (POM)

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CHEN Y, LIN Y. A calculation method for friction coefficient and meshing efficiency of plastic line gear pair under dry friction conditions. Friction, 2021, 9(6): 1420-1435. https://doi.org/10.1007/s40544-020-0424-x

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Abstract

A calculation method for the friction coefficient and meshing efficiency of plastic line gear (LG) pair under dry friction conditions was studied theoretically and experimentally, taking a polyoxymethylene parallel line gear pair (POM PLGP) as an example. Firstly, the geometric and mechanical models of PLGP were built by considering the effects of misalignment and loaded deformation under the actual operating condition. Then, the friction coefficient of POM specimens was obtained via the ball-on-disk experiment, of which the value varies between 0.35 and 0.45 under the experimental conditions. The calculation formula for the friction coefficient of POM LG pair was obtained by fitting the friction coefficient of the POM specimens, and the meshing efficiency of POM LG pair was calculated based on the calculation formula for friction coefficient and the meshing efficiency calculation approach. Finally, the meshing efficiency of POM PLGP specimens was measured using a homemade gear meshing efficiency test rig. The experimental results validated the feasibility of the proposed calculation method for the friction coefficient and meshing efficiency of the plastic LG pair. This study provides a method for the calculation of the friction coefficient and meshing efficiency of plastic gear pairs under dry friction conditions. It also provides the basis for the wear calculation of plastic LG pair under dry friction conditions.

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A calculation method for friction coefficient and meshing efficiency of plastic line gear pair under dry friction conditions

Show Author's information Hide Author's Information Yangzhi CHEN(

), Yifan LIN

School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China

Abstract

Keywords: friction coefficient, dry friction, line gear (LG) pair, meshing efficiency, polyoxymethylene (POM)

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Acknowledgements

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Publication history

Received: 12 December 2019

Revised: 13 May 2020

Accepted: 28 June 2020

Published: 23 November 2020

Issue date: December 2021

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Acknowledgements

The authors gratefully acknowledge the support from the National Natural Science Foundation of China (No. 51575191) and 2019 Guangzhou Technology Project (No. 201904010368).

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