Title: Effect of grinding depth on surface topography by considering vibrations and a force prediction model
Authors: Mingxia Kang; Lu Zhang; Wencheng Tang
Addresses: School of Mechanical Engineering, Southeast University, Nanjing 210000, China ' School of Mechanical Engineering, Southeast University, Nanjing 210000, China ' School of Mechanical Engineering, Southeast University, Nanjing 210000, China
Abstract: Little consideration has been given to vibrations when the effect of grinding process parameters on the surface morphology is studied. Taking a grinding force as the intermediate variable, influences of grinding depths on the surface topography are investigated with considering vibrations in this paper. Firstly, a novel grinding force prediction model is proposed through amending the Malkin model by integrating with contact arc length and abrasive grain contact angle. Secondly, vibrations of the feed platform and the grinding wheel shaft are analysed. Vibration displacement in the x-direction of wheel axis remains substantially between 140-150 nm, while in the y-direction, it increases with the grinding depth. Finally, three-dimensional surface topographies with different grinding depths are investigated. It is observed that the pronounced defects and a coarse texture are generated as the grinding depth increases. Parameters like Sa, Sq, Sku, Ssk are more suitable to represent the real grinding quality of workpiece surface.
Keywords: contact arc length; abrasive grain contact angle; grinding force; surface topography; vibrations.
International Journal of Mechatronics and Manufacturing Systems, 2019 Vol.12 No.2, pp.73 - 95
Received: 06 Nov 2018
Accepted: 21 Apr 2019
Published online: 11 Oct 2019 *