在渐开线齿轮测量中,一般都习惯于应用测量公法线的方法。首先得出基节,然后在基节表中查出模数和齿形角两个基本参数。这种方法用起来简便,所需测量工具简单,测量的精度也比较高。但1972年在测最北票矿务局冠山一井佳友500hp绞车(日本老设备)大型人字齿轮新配件(国产)的参数时,遇到一个特例。该人字齿轮 In involute gear measurement, it is generally customary to apply a method of measuring the common normal. First of all, the base section is obtained, and then two basic parameters of module number and tooth profile angle are found in the base section table. This method is easy to use, the measurement tool required is simple, the measurement accuracy is relatively high. However, in 1972 measured the most North PetroChina Mining Bureau crown a well Jiaoyou 500hp winch (Japan old equipment) new large-sized herringbone gear (domestic) parameters encountered a special case. The character gear