The Wear Behaviour of a New Eccentric Meshing Reducer with Small Teeth Difference

Author:

Yang Renqiang12,Guan Zhengjun1,Yang Dongdong3,Zou Shuaidong2,He Haifeng3,Wang Guangjian4ORCID

Affiliation:

1. College of Engineering and Technology, Southwest University, Chongqing 400715, China

2. School of Smart Health, Chongqing Polytechnic University of Electronic Technology, Chongqing 401331, China

3. School of Mechanical and Electrical Engineering, Guizhou Normal University, Guiyang 550025, China

4. State Key Laboratory of Mechanical Transmission for Advanced Equipment, Chongqing University, Chongqing 400044, China

Abstract

Eccentric meshing reducers are widely used in agriculture, industrial robots, and other fields due to their ability to achieve a high reduction ratio within a compact volume. However, the contact wear problem seriously affects the service performance of the eccentric meshing reducer, thereby limiting their range of applications. To effectively address this issue, this study involved a stress analysis of the contact pairs and a surface wear analysis of a new eccentric meshing reducer. The wear equation for the contact pairs was derived using Archard’s wear theory, incorporating geometric and material parameters from both the reducer gear contact pair and the spline contact pair. In parallel, a wear simulation was conducted by integrating the UMESHMOTION subprogram with ALE adaptive grids. Additionally, the effects of load amplitudes on contact pair stress and surface wear were systematically investigated. It is revealed that the contact pair stress of the reducer gear was higher than that of the spline contact pair. Furthermore, the internal spline exhibited the highest wear rate, followed by the output shaft gear, external spline, and input shaft gear, in that order. This work provides a comprehensive and in-depth understanding of the wear behaviors of general reducers with small teeth differences and offers valuable scientific references for design optimization, fault diagnosis, and maintenance strategy formulation.

Funder

National Natural Science Foundation of China

Chongqing Science and Technology Bureau Agricultural High tech Special Project

Youth Project of Science and Technology Research Program of Chongqing Education Commission of China

Key Project of Science and Technology Research Program of Chongqing Education Commission of China

Guizhou Provincial Basic Research Program

Publisher

MDPI AG

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