机械科学与技术2018，Vol.37Issue(2)：263-269,7.DOI:10.13433/j.cnki.1003-8728.2018.0216
材料本构参数对高速切削锯齿形切屑形成的数值分析
Numerical Analysis of Influence of Material Constitutive Parameters on Serrated Chip Formation in High Speed Machining
摘要
Abstract
In this paper,the influence of the material constitutive parameters on the serrated chip is analyzed based on the orthogonal cutting model in high speed machining.The results show that the cutting force and cutting temperature change linearly with the constitutive parameters A,B,C and n;The parameters A and n have great influence on the chip morphology,while the parameters B,C and m influence the curvature radius of serrated chip;However,the effects of the parameters C and m on the chip morphology,cutting force and cutting temperature can be ignored at C below 0.01 and m above 5.The value of A increases with the increasing of hardness value and decreasing of n of workpiece.For materials depending on strain rate,value of C is larger;And for workpiece vulnerable to temperature,value of m is smaller.It can provide a guidance for predicting the variation of the material parameters under different hardness,inferring the material hardness value according to the material constitutive parameters and the comparison of material property difference.关键词
锯齿形切屑/材料本构参数/数值分析/高速切削Key words
serrated chip/material constitutive parameters/numerical analysis/high speed machining分类
矿业与冶金引用本文复制引用
王伏林,陶琪,肖珞琼,邓朝晖..材料本构参数对高速切削锯齿形切屑形成的数值分析[J].机械科学与技术,2018,37(2):263-269,7.基金项目
湖南省自然科学基金项目(14JJ7094)与湖南科技大学难加工材料高效精密加工湖南省重点实验室开放基金项目(E21635)资助 （14JJ7094）
