Journal
INDUSTRIAL LUBRICATION AND TRIBOLOGY
Volume 74, Issue 1, Pages 34-44Publisher
EMERALD GROUP PUBLISHING LTD
DOI: 10.1108/ILT-08-2021-0339
Keywords
Lubrication regime; Aser texturing; Friction coefficient; Stick-slip phenomenon; Laser texture; Guideway; Lubrication condition; Static and kinetic friction
Categories
Funding
- National Natural Science Foundation of China [52075225]
- Science and Technology Planning Social Development Project of Zhenjiang City (CN) [ZD2020004]
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This study investigates the efficacy of micro-dimples in inhibiting the stick-slip phenomenon on the sliding guideway. The results show that micro-dimples help improve lubrication conditions, increase friction stability, and reduce the occurrence of stick-slip phenomenon.
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.
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