Abstract: Aiming directly at trivial problems of elliptic gears' design, a new method for shape design and analysis was proposed. First, according to the given transmission ratio's changing law, the most appropriate expression of the function was selected, and the pitch curve obtained. Then with the method of instantaneous radius of curvature, the involute tooth profiles of elliptic gears was shaped. Finally, the transmission ratio was compared and analyzed when a pair of elliptic gears meshing each other. The experiment results show that this new method is not only feasible but also precise.

Key words: Elliptic gears , Transmission ratio , Pitch curve , Tooth shape ,  Comparative analysis

摘要： 针对椭圆齿轮设计繁复的现状,提出了渐开线椭圆齿轮造型设计与分析的新方法。即根据给定的传
动比函数的变化规律,选取该函数最合适的表达式,反求节曲线;利用瞬时曲率圆法,进行渐开线椭圆齿轮齿廓造
型;用一对椭圆齿轮相互啮合时的传动比进行对比分析,验证了此方法不但可行而且具有较高精度。

关键词: 椭圆齿轮 , 传动比 , 节曲线 , 齿廓造型 , 对比分析