3.测量误差的分析(1)如果采用图4所示的“盘形凸轮比较检验仪”检验盘形凸轮型面。因工件的加工和测量的原理一致,加工点和测量点均在一点,就不会产生测量误差△r_(co)而其它的测量方法,例如绝对检验法中的“游标卡尺检验法”、“光学分度头检验法”;比较检验法中的“在加工机床上的比较检验法”、“弯尺比较检验法”等,它们的测量原理和加工原理并不一致,从而产生测量误差△r_(co) 3. Measurement error analysis (1) If you use Figure 4 shows the “disc-shaped cam comparator test disc cam profile inspection. Due to the same principle of workpiece machining and measurement, the machining point and the measurement point are a little, there is no measurement error △ r_ (co) and other measurement methods, such as the absolute test method vernier caliper test method, Indexing test ”; comparative test in the“ comparison test on the machine tool, ”“ comparison test method for the bending scale ”, etc., their measurement principle and processing principle is not consistent, resulting in measurement error △ r_ (co )