一、概述就传动元件几何形状精度的评定观点及相应的测量方法和原理而言 ,其测量法大体可分为三类。1 .几何坐标测量法这种测量法的基点在于被测件是一个几何实体。建立一个基准测量坐标系 ,将被测工件 (它有自身的坐标系 )放置在该测量坐标系中去进行度量。按照工件坐标系和测 First, an overview of the transmission element geometry accuracy assessment point of view and the corresponding measurement methods and principles, the measurement can be roughly divided into three categories. Geometrical coordinate method The basis of this method of measurement is that the DUT is a geometric entity. Establish a baseline measurement coordinate system, the measured workpiece (it has its own coordinate system) placed in the measurement coordinate system to measure. According to the workpiece coordinate system and measurement