Effect of laser-textured micro dimples on inhibition of stick-slip phenomenon of sliding guideway

Abstract

Purpose

This study aims to investigate the efficacy of micro dimple in inhibiting stick-slip phenomenon on the sliding guideway.

Design/methodology/approach

In this study, micro-dimples were fabricated by laser on surfaces of steel disk and guideway. The disks and guideways were respectively performed pin-on-disk tribological tests and working condition experiments to study differences in lubrication condition and friction stability between textured and untextured surfaces.

Findings

Micro-dimples help reduce critical sliding speed that allows contact surfaces to enter in hydrodynamic lubrication regime. This increases hydrodynamic lubrication range and narrows speed range where stick-slip phenomenon can occur, enhancing sliding guideway’s adaptability for broader working conditions. Furthermore, friction stability on the textured surface improved, lowering the occurrence possibility of stick-slip phenomenon. Finally, difference between static and kinetic frictions on the textured surface is lower relative to the untextured surface, which decreases the critical velocity when the stick-slip phenomenon occurs.

Originality/value

The results indicate that laser-textured micro-dimples are significantly conducive to inhibit stick-slip phenomenon, thus providing smoother movement for the guideway and eventually increasing precision of the machine.

Citation

Fu, Y., Yang, J., Wang, H. and He, Y. (2022), "Effect of laser-textured micro dimples on inhibition of stick-slip phenomenon of sliding guideway", Industrial Lubrication and Tribology, Vol. 74 No. 1, pp. 34-44. https://doi.org/10.1108/ILT-08-2021-0339