一、前言坐标测量机实质上是一个测量不同形状工件尺寸的直角坐标系统,其测量结果具有一定的准确度,准确度由下述技术条件规定。1.一般特性由于被测工件形状千变万化,测量时工件的定位和装夹固定方法也多种多样,因此准确 I. INTRODUCTION Coordinate measuring machine is essentially a rectangular coordinate system for measuring the dimensions of workpieces with different shapes. The measurement results have a certain degree of accuracy, and the accuracy is stipulated by the following technical conditions. 1. General characteristics As the ever-changing shape of the workpiece under test, the measurement of the workpiece positioning and clamping methods are also diverse, so accurate