According to the geometric feature of the rotated parts with curved generatrix including male or female curved outlines,this paper deals with its theoretical roughness of the surface.

• 针对包括凹凸曲线轮廓的曲母线回转零件的几何特征,推导了该类零件车削表面理论粗糙度公式,指出了该类零件车削表面理论粗糙度的影响因素。