A-C双转台五轴机床数控加工安全性研究

Study on the Safety for Five-axis CNC Machine with A-C Dual Rotary Tables

针对A-C双转台五轴机床加工中的干涉、加工盲区问题,通过对数控加工中实际情况进行分析,从其产生原因入手,首先从CAM软件编程设置控制刀轴、计算夹具的安全高度抬升工件这两个方面避免刀具、刀柄或主轴部件与非加工部位发生干涉;然后通过A、C旋转角的优化规定A角度的取值为零或负值,解决了加工盲区问题;最后通过VERICUT软件仿真及实例加工验证了这3种方法对A-C双转台五轴机床加工中安全性的提升具有重要的实用价值。

In order to solve the problem of interfering and processing blinds in the machining of five-axis machine tools with A-C dual rotary tables,the actual situation of NC machining was analyzed. Starting from the cause of problem,two aspects were selected to avoid the interference of the tool,handle or spindle parts with non-processing parts. The one was setting CAM software to control tool spindle. The another was calculating the safety height of the fixture to lift workpiece. Then the problem of processing blind spots was solved through optimization of the A,C rotation angle to rule A angle value was zero or negative. Finally,the VERICUT software simulation and example machining were used to verify great practical value that these three methods promotes the safety of five-axis machine tools with A-C dual rotary tables.