硬质合金刀具EHM切削性能有限元仿真研究  

Finite Element Simulation Study of EHM Cutting Performance of Cemented Carbide Cutting Tool

作　　者：康裕华 董霖[1,2] 向彪 刘雄[1,2] 

机构地区：[1]西华大学机械工程学院,四川成都610039 [2]西华大学流体及动力机械教育部重点实验室,四川成都610039

出　　处：《稀有金属与硬质合金》2017年第5期69-73,共5页Rare Metals and Cemented Carbides

基　　金：教育部"春晖计划"合作科研项目(Z2016132);2013年国家人社部留学回国人员科技活动择优资助项目;西华大学流体及动力机械教育部重点实验室研究基金(JYBFX-YQ-1;szjj2016-010);西华大学省部级学科平台制造与自动化重点实验室(重点研究基地)开放课题(szjj2015-081);西华大学研究生创新基金(jcjj2016035)

摘　　要：在EHM切削过程中电阻焦耳热产生的温升公式基础之上,采用有限元分析软件DEFORM进行仿真实验,模拟了硬质合金刀具在分别通入不同电流强度下切削45钢的过程,通过计算分析了不同电流强度下刀具、刀-屑接触区的温度场及刀具磨损的变化规律。结果表明,相对于无电流的切削过程,通入电流能够降低刀具温度,减少磨损,并且随着电流强度增加,刀具温度明显降低。On the basis of the formula of temperature rise caused by resistance Joule heat during EHM cutring process,cutting simulation tests were carried out using finite element analysis software DEFORM.and the cutting process was simulated of 45 steel by cemented carbide cutting tool with different current intensity. Temperature field of tool and tool-chip contact area and tool wear change rule with different current intensity were analyzed based on calculation. The results show that compared with the no-current cutting process.current input can reduce the tool temperature and tool wear,and with the current intensity increasing. the tool temperature is significantly reduced.

关 键 词：硬质合金刀具 导电加热切削 刀具温度 刀具磨损 DEFORM 

分 类 号：TG661[金属学及工艺—金属切削加工及机床]