凸轮理论廓线 meaning in English

pitch curve

Through calculation of a living example and its result analysis verified that while the vibration amplitude is comparatively small and the sine curve is being adopted , the theoretical contour of cam possesses rather good form closure property and is suitable to be applied for high - speed cam
通过实例计算和结果分析，表明该凸轮理论廓线采用正弦曲线，在振幅较小时，有较好的形封闭性，适合用于高速凸轮。
In the paper , based on the method of low pair replacing with high pair , the problem of cam design was transferred to that of linkage design . by means of rotary unit vectors , the equations of displacement , velocity and acceleration of the replacement mechanisms were developed . and then , the virtual linkage ' s length and direction were deduced
论文基于高副低代原理，将平面凸轮机构设计与再现函数的平面连杆机构设计统一为同一种方法，运用圆向量函数建立代换机构的位移、速度、加速度矢量方程式，求取虚拟连杆杆长和方向，由此展开凸轮理论廓线、实际廓线、曲率半径和压力角的求解，并得出用圆形刀具加工凸轮时刀具中心的轨迹方程。