关键词: 椭圆齿轮 , 传动比 , 节曲线 , 齿廓造型 , 对比分析

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