齿轮的公法线测量因具有测量方便,测量精度较高等优点,在齿轮的制造和检测过程中被广泛采用。但是,对直齿圆锥齿轮的测量,迄今还是采用单齿测量方法,这种方法要求有熟练的测量技能,但测量误差较大,当齿轮的大端有倒角时,测量工作困难,有时还得采用一定的工艺措施,因而增加了齿 The common normal measurement of gears has been widely used in the manufacture and testing of gears due to the advantages of convenient measurement and high measurement accuracy. However, the measurement of spur bevel gears has heretofore been carried out using a single tooth measurement method which requires skilled measurement skills but a large measurement error. The measurement work is difficult when the large end of the gear is chamfered, and sometimes To adopt a certain amount of process measures, thus increasing the tooth