In this paper, a new kind of external cycloidal type gear rotor, which is composed of arcs and their conjugate curves (cycloidal type curves), is designed, by the aid of the modern meshing theory and CAGD.

• 本文借助现代啮合理论及计算机辅助几何设计，设计出一种新的外啮合摆线类转子型线，由圆弧及其共轭线(摆线类曲线)组成。