This article introduces approaches and instruments about error checking on CNC machines.In-process gauging system is also discussed in terms of working principles,programming methods and simulation.

• 本文介绍了当前数控机床上常用的几种误差测量方法与仪器的原理,并对数控加工在线检测系统的组成、工作原理、编程方式等方面进行了概要性的介绍。