难加工材料超声车削有限元仿真  

Finite Element Simulation of the Ultrasonic Turning in Difficult Processing Materials

作　　者：张兴红[1] 闫德鑫[1] 邱磊[1] 何涛[1] 

机构地区：[1]重庆理工大学时栅传感及先进检测技术重庆市重点实验室,重庆400054

出　　处：《机械设计与制造》2014年第4期82-84,共3页Machinery Design & Manufacture

基　　金：国家自然科学基金资助项目(51275551);重庆市自然科学基金资助项目(cstc2012jjA70004);重庆理工大学研究生创新基金项目(YCX2012314)

摘　　要：针对普通车削不能很好的满足一些难加工材料性能要求的情况,提出了超声波辅助车削技术,这项技术是将超声振动有规律地叠加在刀具上,形成稳定有规律的振动,这样就会产生动摩擦并且以动摩擦代替静摩擦。通过对超声车削加工和普通车削加工在不同切削速度和切削厚度时的有限元模拟仿真,分别探讨在相同条件下不同厚度、不同切削速度对瞬时切削力的影响;同时,对比普通车削和超声车削在加工过程中的等效应力云图,可以得出超声车削在加工难加工材料时的优越性。As for the problem that ordinary turning cannot well satisfy the performance requirements of some difficult-to- machine materials, ultrasonic assisted turning technology is proposed. This technique is to regularly superimpose ultrasonic vibration on cutting tools, forming a regular vibration, and this will create dynamic friction which will replace static friction. Based on ultrasonic turning and ordinary turning＇s process different cutting speed and cutting thickness of finite element simulation, it respectively discusses the influence of the instantaneous cutting farce in different thickness and different cutting speed under the same condition. At the same time, compared with equivalent mises stress nephogram of ardinary turning and ultrasonic turning in the process, it can be concluded the advantages of ultrasonic turning when processing difficult processing materials.

关 键 词：超声车削 普通车削 有限元仿真 切削力 难加工材料 

分 类 号：TH16[机械工程—机械制造及自动化]