Study on friction characteristics of sliding interface of feed system
Industrial Lubrication and Tribology
ISSN: 0036-8792
Article publication date: 4 April 2020
Issue publication date: 4 April 2020
Abstract
Purpose
The serious friction caused by the fluctuation of friction occurs when start-up and will reduce the positioning accuracy of the servo axes of high precision machine tools, the purpose of this paper is to study the friction fluctuation characteristics of friction coefficients between interfaces under different working conditions.
Design/methodology/approach
HT200 and 45# materials were experimentally studied by friction and wear testing machine UMT-3, the variation of friction coefficient under different working conditions (different start-up conditions, the variation of lubrication state area and different roughness) were measured.
Findings
The results show that the larger start-up acceleration shortens the pre-sliding time of the interface friction, makes the friction coefficient decrease faster, reduces the mixed lubrication area of the contact surface and makes the contact surface reach the stable lubrication state quickly. It can be concluded that the larger roughness surface will lead to the larger mixed lubrication area, the larger static friction coefficient and the larger drop between static and dynamic friction coefficient and easy to cause friction vibration.
Originality/value
The results reveal the friction fluctuation rule of the metal interface during the different start-up process, which is of guiding significance to reveal the lubrication principle and mechanism of the mechanical interface.
Peer review
The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-11-2019-0482/
Keywords
Acknowledgements
I thank Professor Gao and Associate Professor Li for providing experimental equipment, experimental platform and relevant experimental materials, as well as providing technical assistance in the whole process. Furthermore, this study is financially supported by the National Natural Science Foundation of China (51775432), so the experiment platform can be set up and research study has been successfully completed.
Citation
Li, P.-P., Gao, F., Li, Y. and Yang, B. (2020), "Study on friction characteristics of sliding interface of feed system", Industrial Lubrication and Tribology, Vol. 72 No. 7, pp. 865-871. https://doi.org/10.1108/ILT-11-2019-0482
Publisher
:Emerald Publishing Limited
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