传统的空间分度凸轮机构由于其接触线是空间曲线而使得传动过程中凸轮与滚子曲面产生相对滑动并造成不均匀磨损，从而影响其使用性能．本文作者采用空间回转变换张量，根据空间曲面啮合原理，系统地研究了球面凸轮机构的啮合特性；指出该机构具有接触线为直线、接触线上各点压力角相同、凸轮与滚子曲面之间无相对滑动等特点；为该机构的推广使用及设计与制造提供了理论依据。 The traditional space indexing cam mechanism causes its contact line to be a spatial curve, which causes relative sliding between the cam and the roller surface during the driving process and causes uneven wear, thereby affecting its serviceability. According to the principle of space surface meshing, this paper systematically studies the meshing characteristics of spherical cam mechanism. It is pointed out that this mechanism has a straight line of contact line, the pressure angle of each point on the line of contact is the same, and that of cam and roller surface No relative sliding between the characteristics of the agency for the promotion and use of design and manufacture provide a theoretical basis.