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Effect of gas slip on the behavior of the aerostatic guideway

Dongju Chen (College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing, China)
Jihong Han (College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing, China)
Chen Huo (College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing, China)
Jinwei Fan (College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing, China)
Qiang Cheng (College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing, China)

Industrial Lubrication and Tribology

ISSN: 0036-8792

Article publication date: 10 July 2017

Abstract

Purpose

This paper aims to better understand the dynamic characteristics of an aerostatic slider caused by a gas film, and the impact of a gas film slip on the load capacity, stiffness and dynamic stiffness of the guideway is studied.

Design/methodology/approach

In theory, the Navier velocity slip model is introduced for fluid continuous flow equation to calculate the flow state in the micro-state; in experimental techniques, the stiffness experiment of the guideway by digital inductance meter is performed under different loadings, which are used to inspect the simulation results.

Findings

The maximum value of bearing stiffness in the condition of considering that the gas slip is larger than that of not considering the gas slip, and the gas film clearance of maximum bearing stiffness in the condition of considering the gas slip is less than that of not considering the gas slip. This is verified by the measurement of the stiffness of the guideway.

Originality/value

This paper mostly studies the influence of the gas slip effects on the performance of the aerostatic guideway, which will make a certain contribution to the guideway stability and the machining precision of the machine tool.

Keywords

Acknowledgements

This research was funded by the National Natural Science Foundation of China Grant Nos. 51105005 and 51475010, and Natural Science Foundation of Beijing Municipality Grant No. 3142005.

Citation

Chen, D., Han, J., Huo, C., Fan, J. and Cheng, Q. (2017), "Effect of gas slip on the behavior of the aerostatic guideway", Industrial Lubrication and Tribology, Vol. 69 No. 4, pp. 447-454. https://doi.org/10.1108/ILT-03-2016-0071

Publisher

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Emerald Publishing Limited

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