对称混合公比变速系统设计规律的探讨

An enquiry into the design rule of the variable speed system of symmetric mixed common ratio

本文讨论了对称混合公比变速系统中基本组传动副数及第一扩大组级比指数的确定问题，给出了对称混合公比变速系统的设计规律与设计实例。

This paper deals with the determination of the number of the pair of gears in basic group and transmission ratio exponent of the first extended group in the variable speed system with symmetric mixed common ratio, and gives the design rule and actual example of the system.