工件预加载温度对Ti-6Al-4V车削过程的影响  

Effect of Workpiece Pre-loading Temperature on Ti- 6Al- 4V Turning Process

作　　者：唐玲艳 唐联耀 李鹏南[2] 邱新义[2] 牛秋林[2] Tang Lingyan;Tang Lianyao;Li Pengnan;Qiu Xinyi;Niu Qiulin(School of Mechanical and Electrical Engineering,Guangdong University of Science and Technology,Dongguan,Guangdong 523083,China)

机构地区：[1]广东科技学院,广东省东莞市523083 [2]湖南科技大学

出　　处：《工具技术》2019年第6期58-61,共4页Tool Engineering

基　　金：国家自然科学基金(51275168);广东省教育厅青年创新类项目(自然科学类)(2017KQNCX228)

摘　　要：通过对比仿真和试验的切削力、切屑形态和锯齿化程度验证了仿真模型的可行性,然后用仿真分析的方法研究了工件预加载温度对切屑形貌、切削力和切削温度的影响,获得了锯齿形切屑转变为带状切屑的临界工件预加热温度。结果表明:随着预加载温度的增加,切屑变形减少;在v=50m/min时,锯齿形切屑转变为带状切屑的临界预加载温度为150℃~200℃;切削速度v=110~170m/min时,临界预加载温度为250℃左右。The feasibility of the simulation model is verified by comparing the cutting force,chip form and saw tooth degree of the simulation and the cutting experiment.Then the influence of the workpiece pre-loading temperature on chip morphology,cutting force and cutting temperature is studied by simulation analysis method.The critical preheating temperature of the workpiece from serrated chip to strip chip is obtained.The results show that the chip deformation decreases with the increase of the preloading temperature.When v =50m/min,the critical pre-loading temperature for saw tooth chips to strip chips is between 150℃-200℃,and the critical pre-loading temperature for cutting speed v =110-170m/min is about 250℃.

关 键 词：工件预加载温度 TI-6AL-4V 有限元方法 锯齿形切屑 

分 类 号：TG51[金属学及工艺—金属切削加工及机床] TH162[机械工程—机械制造及自动化]