超声车削瞬时切削力仿真研究  

Simulation Research on the Instantaneous Cutting Force in Ultrasonic Turning

作　　者：张兴红[1] 闫德鑫 陈鑫[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 [2]湖南科技经贸职业学院电气与信息工程系,湖南衡阳421001

出　　处：《重庆理工大学学报（自然科学）》2014年第7期39-42,共4页Journal of Chongqing University of Technology：Natural Science

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资助项目(YCX2012314)

摘　　要：针对尚未掌握超声辅助车削加工过程中瞬时切削力的变化规律的情况,运用有限元软件ANSYS/LS-DYNA,采用Johnson-Cook本构模型建立了40CrNiMo合金超声车削加工的三维模型。利用正交切削方式对超声车削和普通车削进行了切削力的仿真,得到了超声车削和普通车削的瞬时切削力变化曲线。将超声车削和普通车削的平均切削力大小进行对比分析。结果表明,超声车削的平均切削力要远远小于普通车削的平均切削力。As for the phenomenon that people do not master the change rule of the instantaneous cut-ting force in the ultrasonic assisted turning processing,and by using the finite element software of AN-SYS/ls-dyna and adopting Johnson-Cook constitutive model,we established a 3D model of 40CrNiMo alloy ultrasonic turning processing.Simulating the cutting force of ultrasonic turning and common turn-ing using the orthogonal cutting way,we obtained the instantaneous cutting force curve of ultrasonic turning and common turning.At the same time,we compared the average cutting force of ultrasonic turning with the common turning’s,and the results show that the average cutting force of ultrasonic turning is far less than the average cutting force of ordinary cutting.

关 键 词：超声车削 普通车削 有限元仿真 平均切削力 

分 类 号：TG663[金属学及工艺—金属切削加工及机床]