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research-article

Experimental study on contact force in a slewing bearing

[+] Author and Article Information
Guanci Chen

Faculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming 650500, China
gcchen@kmust.edu.cn

Ge Wen

Faculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming 650500, China
1509707488@qq.com

Zhengming Xiao

Faculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming 650500, China
5636482@qq.com

Hongjun San

Faculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming 650500, China
sanhjun@163.com

1Corresponding author.

ASME doi:10.1115/1.4037356 History: Received April 28, 2017; Revised July 07, 2017

Abstract

Measuring and verification of contact force in a rolling element bearing is a big problem. In this study, a new measuring method for contact force in a large-scale ball bearing is developed. The idea is to measure the deformation under the ball-race contact by displacement sensor at first, and the displacement of the end face of load bearing ring is also measured to determine the contact angle of ball-race contact. Then, the corresponding theory is developed to calculate the contact angle of ball-race contact by the displacement of the end face of load bearing ring. At last, the ball-race contact force is determined by accurately calculating through finite element method. Results show that the relation between contact force and deformation of measuring surface that is under ball-race contact is linear. The position of ball greatly affects the contact angle of ball-race contact. The contact angle of the ball which is near the arm of force is larger than that of the ball which is far from the arm of force. On the contrary, the measuring deformation of ball-race contact that is near the arm of force is less than that of ball-race contact that is far from the arm of force. The method developed here is only suitable for large-scale rolling element bearing because of the size constraint of the sensor.

Copyright (c) 2017 by ASME
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