中文摘要：

提出一种渐开线环形齿球齿轮的弯曲强度计算方法，解决目前球齿轮弯曲承载能力计算方法缺乏的问题，为球齿轮应用于工程实践提供保障。同时为适应有关参数数值计算需要，根据材料力学基本原理，提出弯曲强度参数计算中的立方抛物线法。

英文摘要：

The ring raises a method of calculating the ring involute teeth spherical gear bending strength, it resolves the problem that the calculating method of the spherical gear bending strength has been vacancy until now, and assures the spherical gear being taken to practice in engineering. Then , in order to meet the need of relevant parameter calculating conveniently, basing on the principium of the material mechanics, the cube-parabola method in calculating bending strength parameter number is provided.