摘要
针对微米级切削深度的超精密车削中金刚石刀具几何参数对已加工表面残余应力的影响,采用有限元的方法,建立超精密车削的有限元仿真模型,对硬铝合金的超精密车削过程进行模拟。对车削过程的切削力和切削温度进行分析。采用不同的刀具几何参数进行有限元仿真,得到刀具前角、后角和钝圆半径对已加工表面残余应力的影响和分布规律,为超精密车削中残余应力的控制提供仿真依据。
To study the effects of geometric parameters of diamond tools on residual stresses, the cutting model was established by using the finite element method. The ultra-precision turning process in micron level of hard aluminum alloy was simulated. The cutting force and cutting temperature were analyzed. Using different geometric parameters of diamond tools in the finite element simulation, the results after completion of cutting were extracted. The influence laws of rake an- gle, relief angle and edge radius on residual stresses were gotten, which will provide the basis for the control of residual stresses in ultra-precision turning process.
出处
《工具技术》
北大核心
2015年第9期33-37,共5页
Tool Engineering
基金
中央高校基本科研业务费专项资金(HEUCF140714)
关键词
超精密车削
残余应力
硬铝合金
刀具几何参数
有限元仿真
ultra-precision turning
residual stress
hard aluminum alloy
geometric parameters of tool
finite element simulation
