Effect of gas slip on the behavior of the aerostatic guideway
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
:Emerald Publishing Limited
Copyright © 2017, Emerald Publishing Limited