滚齿调整中挂轮比允差的计算

Calculation of Reasonable Allowance on Change Gear Ratio in Gear Hobbing Adjustment

文中对加工斜齿轮、大质数齿轮、用无差动机构的机床加工斜齿轮以及加工直齿轮时，分齿挂轮等的有关挂轮比允差从理论上分别进行了严格推导，得出相应的计算公式．

This paper discusses that in order to get a. qualified hobbed gear,an arrangement of the ideal change gear ratio on. the machine is very important. However, in the case of no theoretical change gear ratio obtainable, the accept- able .allowance should be considered for working on a good enough hobbed pro- duct. Hcreof, we proceed on the theoretic analyses separately to the optimum allowances of the change gear ratio, such as for hobbing the bevel gear,the large prime number gear,and the spur or bevel gear on a machine of no differen- tial mechanism. Also, the relevant calculating formulae are presented.