水下航行器凸轮发动机的凸轮机构是其主要受力部件,在设计过程中必须进行强度校核.通过对凸轮和圆柱滚轮的接触情况进行分析,运用微分几何理论导出了凸轮的工作曲面方程和接触点的诱导法曲率模型,采用弹性力学中的赫兹理论,建立了凸轮机构的接触应力模型,并进行了算例分析.仿真模型能准确地计算水下航行器凸轮发动机凸轮机构的接触应力,可为其设计和参数的选择提供理论依据.%Cam mechanism is one of the most important parts for underwater vehicle cam engine, it must be stress checkout in process of designment. Based on analyzing the meshing condition, the working curved surface equation of cam and the induced normal curvature are modeled by using differential geometric theory, the contact stress models of cam mechanism are modeled based on Hertz theory in elastic mechanics, and the calculating example is made. The simulation models can be used for calculating cam mechanism contact stress correctly, and these models can applied theoretical bases for designing and parameters choosing for cam mechanism.
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