非圆截面数控车削技术研究

Study on the Technology of Noncircular NC Turning

针对非圆截面加工中需要解决的问题,提出了一种基于直线电动机的刀具高速摆动加工机构,对机构进行运动学分析,实现刀具恒切削角度加工。采用PMAC(Programmable multi-axis controller)时基控制法,实现刀具进给和工件旋转的协调控制,完成非圆截面的自动车削。该方法在非圆截面数控车床中得到了应用。结果表明,非圆截面加工精度和效率得到了提高。

Based on the characteristic of noncircular turning, a variable rank angle mechanism driven by high frequency linear servo motor was established. The kinematics mechanism motion rule was analyzed and the constant rank angle was realized. The tool feed synchronized the workpiece rotation by using time-base method of PMAC and achieved the noncircular auto turning. This method had applied in noncircular NC lathe. The result shows that it can improve the precision and efficiency of noncircular turning.