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Study on thermo-mechanical coupling characteristics of angle contact ball bearing with fix-position preload

Pingping He (Key Laboratory of NC Machine Tools and Integrated Manufacturing Equipment of the Education Ministry and Key Laboratory of Manufacturing Equipment of Shaanxi Province, Xi'an University of Technology, Xi'an, China and Mechanic and Electronic Engineering of Sanmenxia Polytechnic, Sanmenxia, China)
Feng Gao (Key Laboratory of NC Machine Tools and Integrated Manufacturing Equipment of the Education Ministry and Key Laboratory of Manufacturing Equipment of Shaanxi Province, Xi'an University of Technology, Xi'an, China)
Yan Li (Key Laboratory of NC Machine Tools and Integrated Manufacturing Equipment of the Education Ministry and Key Laboratory of Manufacturing Equipment of Shaanxi Province, Xi'an University of Technology, Xi'an, China)
Wenwu Wu (Key Laboratory of NC Machine Tools and Integrated Manufacturing Equipment of the Education Ministry and Key Laboratory of Manufacturing Equipment of Shaanxi Province, Xi'an University of Technology, Xi'an, China)
Dongya Zhang (Key Laboratory of NC Machine Tools and Integrated Manufacturing Equipment of the Education Ministry and Key Laboratory of Manufacturing Equipment of Shaanxi Province, Xi'an University of Technology, Xi'an, China)

Industrial Lubrication and Tribology

ISSN: 0036-8792

Article publication date: 16 May 2019

Issue publication date: 22 August 2019

Abstract

Purpose

Under fix-position preload, the high rotation speed of the angular contact ball bearing exacerbates the frictional heat generation, which causes the increase of the bearing temperature and the thermal expansion. The high rotation speed also leads to the centrifugal expansion of the bearing. Under the thermal and centrifugal effect, the structural parameters of the bearing change, affecting the mechanical properties of the bearing. The mechanical properties of the bearing determine its heat generation mechanism and thermal boundary conditions. The purpose of this paper is to study the effect of centrifugal and thermal effects on the thermo-mechanical characteristics of an angular contact ball bearing with fix-position preload.

Design/methodology/approach

Because of operating conditions, elastic deformation occurs between the ball and the raceway. Assuming that the surfaces of the ball and channel are absolutely smooth and the material is isotropic, quasi-static theory and thermal network method are used to establish the thermo-mechanical coupling model of the bearing, which is solved by Newton–Raphson iterative method.

Findings

The higher the rotation speed, the greater the influence of centrifugal and thermal effects on the bearing dynamic parameters, temperature rise and actual axial force. The calculation results show that the effects of thermal field on bearing dynamic parameters are more significant than the centrifugal effect. The temperature rise and actual axial force of the bearing are measured. Comparing the calculation and the experimental results, it is found that the temperature rise and the actual axial force of the bearing are closer to reality considering thermal and centrifugal effects.

Originality/value

In the past studies, the thermo-mechanical coupling characteristics research and experimental verification of angular contact ball bearing with fix-position preload are not concerned. Research findings of this paper provide theoretical guidance for spindle design.

Keywords

Acknowledgements

The research is financially supported by the National Natural Science Foundation of China (51775432) and the Key R & D projects in Shaanxi (2018ZDXM-GY-074).

Citation

He, P., Gao, F., Li, Y., Wu, W. and Zhang, D. (2019), "Study on thermo-mechanical coupling characteristics of angle contact ball bearing with fix-position preload", Industrial Lubrication and Tribology, Vol. 71 No. 6, pp. 795-802. https://doi.org/10.1108/ILT-10-2018-0390

Publisher

:

Emerald Publishing Limited

Copyright © 2019, Emerald Publishing Limited