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本文利用旋转变换张量建立了摆杆滚子球面凸轮机构球面凸轮廓线的空间向量方程，导出了球面凸轮的理论轮廓面及实际轮廓面方程。并按照选定摆杆的运动规律及许用压力角条件定出了摆杆的初始位置及初位均。推算出了球面凸轮的最小基圆半径，从而为球面凸轮机构基本尺寸的设计提供了新理论。
In this paper, the space vector equation of spherical cam profiles of pendulum roller spherical cam mechanism is established by using rotational transformation tensor, and the theoretical and actual contour plane equations of spherical cam are derived. And in accordance with the selected law of the pendulum movement and the pressure conditions allowed to set the initial position and the initial position of the pendulum. The minimum base circle radius of the spherical cam is calculated, which provides a new theory for the design of the basic dimensions of the spherical cam mechanism.