齿面曲率对齿轮传动的性能有重要影响 ,而有关面齿轮传动的曲率还没有得到充分的研究。文中利用微分几何原理推导了面齿轮传动的齿面主曲率与主方向 ,由此得出面齿轮传动中诱导法曲率的两个主值 ;开发了相应的程序 ;进行了实例计算 ;分析了传动中的主要参数对曲率的影响 ,所获得的结论对面齿轮传动的强度计算与分析具有参考价值 The curvature of tooth surface has an important influence on the performance of gear drive, but the curvature of surface gear drive has not been fully studied. In this paper, the principle of differential geometry is used to deduce the principal curvature and principal direction of surface gear transmission. The two principal values ​​of induced curvature in surface gear transmission are obtained. Corresponding programs are developed, and examples are given. The main parameters of the curvature of the impact of the conclusions obtained on the opposite gear drive strength calculation and analysis with reference value