汽车变速器齿轮强度的计算比较复杂,有些参数需通过多次选取和计算,才能达到设计要求,需要耗费大量的时间。通过学习研究一些国外变速器的齿轮计算方法,通过VB6.0编程实现计算机辅助汽车变速器齿轮强度计算,找到一种简便的、快速的计算方法。同时使用S-N曲线对计算后的齿轮强度进行校核。Solidworks是法国达索公司开发的集三维建模、运动模拟及有限元分析为一体的,功能强大且操作简单的机械设计软件。可对齿轮进行快速建模,并应用集成cosmosworks对啮合齿轮进行有限元分析,为设计提供依据。本文以某六档机械式汽车变速器为实例进行设计计算。 The calculation of gearbox strength is more complicated. Some parameters need to be selected and calculated several times to meet the design requirements, which takes a lot of time. Through studying and studying the gear calculation method of some foreign transmission, the calculation of the gear intensity of computer aided automobile transmission through VB6.0 programming, find a simple and quick calculation method. At the same time using the S-N curve to calculate the strength of the gear check. Solidworks is a powerful and easy-to-use mechanical design software developed by French company Dassault Systèmes which integrates 3D modeling, motion simulation and finite element analysis. The gear can be quickly modeled, and the application of integrated cosmosworks meshing gear for finite element analysis, to provide a basis for the design. In this paper, a six-speed mechanical transmission as an example to calculate the design.