Estimation of Grinding Force with Consideration of Rupture Factor

[摘要] Grinding force has been treated as an indication of the accuracy and surface quality of ground workpiece. Building a model which can be used to estimate or predict accurately the grinding force will allow us to monitor indirectly and on-line the accuracy and surface quality of grinding, which lays the foundation for implementation of intelligent grinding. Based on analysis of stress concentration in this work, a model of grinding force is proposed, in which the rupture factor of chip at the interface between the grain and workpiece is considered quantitatively and independently. The effect of stress concentration on the grinding force is included in the rupture factor. Least square method and experimental tests under orthogonal test design are used to determine the coefficients in the model. The model is validated through additional experimental tests and the results show that the average prediction accuracy reaches 81.42% for specific normal grinding force and 78.58% for specific tangential grinding force, and the trend in the measured results was well predicted by the proposed model.

[发布机构] School of Mechanical Engineering, Ningbo University of Technology, Ningbo; 315336, China^1

[效力级别] 原子能学

[关键词] Experimental test;Grinding force;Least square methods;Measured results;Orthogonal test design;Prediction accuracy;Workpiece