Title: Study on micro-surface texture and tribology characters of ground surface in point grinding process

Authors: Xiu Shichao; Liu Minghe; Chao Caixia; Li Shujun

Addresses: School of Mechanical Engineering and Automation, Northeastern University, No. 11-3, Wenhua Road, Heping District, 110819, Shenyang, Liaoning, China ' School of Mechanical Engineering and Automation, Northeastern University, No. 11-3, Wenhua Road, Heping District, 110819, Shenyang, Liaoning, China ' School of Mechanical Engineering and Automation, Northeastern University, No. 11-3, Wenhua Road, Heping District, 110819, Shenyang, Liaoning, China ' School of Mechanical Engineering and Automation, Northeastern University, No. 11-3, Wenhua Road, Heping District, 110819, Shenyang, Liaoning, China

Abstract: In point grinding process, the characters of surface texture are different from the general cylindrical grinding since point grinding angle exists in the process. The paper sets the model of point grinding texture direction and analyses its characters and influencing factors. The effects on evaluation parameters of surface roughness and the tribology characters are analysed in terms of the measured value and modelled results. Results manifest that evaluation parameters vary with texture direction, whose optimal angles are acquired when the profile is perpendicular to the moving direction. As to surface texture direction, the hydrodynamic oil film between the sliding contact surfaces is formed with better performance. By tribology experiment, the friction coefficient is affected by the ground surface texture direction greatly. The surface texture angle can be obtained by controlling point grinding angle. There is the optimal value for the higher pressure of oil film and less friction coefficient.

Keywords: micro-surface texture; tribology; point grinding; surface quality; surface roughness; surface texture; modelling; hydrodynamic oil film; sliding contact surfaces; friction coefficient.

DOI: 10.1504/IJSURFSE.2014.060492

International Journal of Surface Science and Engineering, 2014 Vol.8 No.2/3, pp.225 - 238

Received: 31 Jan 2013
Accepted: 26 Aug 2013

Published online: 17 Apr 2014 *

Full-text access for editors Access for subscribers Purchase this article Comment on this article