在引信的定时机构升速传动中广泛采用钟表齿轮。但是钟表齿轮最大缺点是滚刀不能通用,而且滚刀设计及制造较复杂,许多单位解决不了滚刀供应问题,给设计及生产带来困难。本文的目的通过论证探讨在引信定时机构升速传动中采用渐开线齿轮代替习惯上采用的钟表齿轮,解决有关单位滚刀供应困难问题,给引信定时机构的设计与生产创造有利条件。 Clockwork gear is widely used in speeding transmission of timing mechanism of fuze. However, the biggest drawback of clock gear hob can not be universal, and hob design and manufacture of more complex, many units can not solve the hob supply problems, to design and production difficulties. The purpose of this paper is to discuss the use of involute gear instead of the customary clock gear in speed-up transmission of fuze timing mechanism to solve the problem of unit hob supply and to create favorable conditions for the design and production of the timing mechanism of fuze.