NC机床伺服进给系统动态特性的测试方法

Testing methods of dynamic behaviour for feeding servosystem of NC machine tool

本文讨论了在数控机床、加工中心等实际机床上进行伺服进给系统动特性测试的可行性,提出了倒谱平均法等三种测试方法。通过JCS—018立式加工中心伺服进给系统动态特性的实测与计算机仿真的对比,证实了这些方法是有效的,得到的结果能相互引证,是令人满意的。

In this paper, the feasibility which dynamic behaviour of feeding servosystem on practical NC machine tools is measured is dealt with . Three measuring methods are presented. They are cepstral averaging method, white noise signal testing method,and step signal testing method. The experimental results are compared with simulating results for dynamic behaviour of feeding servosystem on the vertical machining centre TYPE JCS-180. The conclusions are satisfactory. They are identical with each other , and these testing results are also cited each other . These testing method are practical.