将平面对数螺旋线引入凸轮轮廓,结合对数螺旋线特点和凸轮功能,用具有螺旋角不变的对数螺旋线保证凸轮传动过程压力角不变,设想用2条对数螺旋线构成凸轮轮廓,结合圆弧构成封闭曲线。再用一具体实例,确定合适的对数螺旋凸轮方程,进而对凸轮进行运动学分析;并对分析的结果设想所能应用的场合。 The planar logarithmic helix is ​​introduced into the cam profile. Combining the characteristics of logarithmic helix and cam function, the pressure angle during the cam driving process is ensured by the logarithmic helix with constant helix angle. It is assumed that the cam with two logarithmic spirals Contour, combined with the arc to form a closed curve. Then use a specific example to determine the appropriate logarithmic spiral cam equation, and then the kinematics of the cam analysis; and the results of the analysis envisaged the application of the occasion.