摘要
运用有限元数值模拟技术对三维金属切削过程进行仿真。分析了切削速度对切削力的影响,并对仿真数据进行拟合处理,导出了不同方向上切削力与切削速度的关系式。探讨了刀具和工件不同阶段应力变化特征。模拟结果表明,刀尖处等效应力最大,切削力在低速切削时,随切削速度的增加而增大,当到达某临界速度时,将随着切削速度的增加而减小。
Simulated 3D-metal cutting processes based on FEM numerical simulation. The effect of velocity in metal cutting forces are analyzed, the simulated date are fitted, and than the functions of cutting forces and cutting speed in different directions are got. Discussed the Stress-Effective character between insert and workplace in different processes. The results indicate that the Stress-Effective on the top of insert is most strong, and with increasing the cutting speed, the cutting force increase, and when it get to some critical-speed, the forces decreased with the increase of speed.
出处
《工具技术》
北大核心
2008年第6期71-73,共3页
Tool Engineering
关键词
金属切削
有限元
切削力
metal cutting, finite element, cutting forces
作者简介
张倩，第二炮兵工程学院研究生一队，710025西安市
