一、问题的提出我厂研制的某发动机体内减速器的主动齿轮是四级精度的宽斜齿轮,齿工作面光洁度要求▽10。这样的精密齿轮在我国航空齿轮制造中是首次遇到的(图1)。齿轮的主要参数: 法向模数m_n=2; 齿数 Z=41; 压力角α_n=20°; First, the question put forward I plant developed a motor reducer drive gear is a four-level precision wide bevel gear, tooth surface finish requirements ▽ 10. This kind of precision gear is the first time in China’s aviation gear manufacturing (Figure 1). The main parameters of the gear: the normal modulus m_n = 2; the number of teeth Z = 41; pressure angle α_n = 20 °;