对心平顶从动件圆弧拟合的盘形凸轮机构运动规律曲线的研究

利用已导出的对心平顶从动件圆弧拟合的盘形凸轮机构的运动规律公式，绘出运动规律曲线，并分析、比较拟合前后该传动副的运动特性。为评价用多段圆弧拟合、加工机械设计中的盘形凸轮轮廓曲线的优劣开辟了一条新途径。精确地计算出圆弧拟合的凸轮对应从动件的位移、速度、加速度及跃动度在各个位置时的数值，从而能准确地判断圆弧拟合的凸轮代替设计要求的凸轮将会给工作带来我大的性能影响，同时，为我们在拟合时控制该传动副的运动

RESEARCHING ON THE MOTION REGULARITY''''S CURVES OF THE DISK CAM APROXIMATED BY SOME CIRCULAR SEGMENTS WITH FLAT-FACED TRANSLATING FOLLOWER

In this paper, the motion regularity's curves are drawn by having derived motion regularity's formulas of the disk cam approximated by some circular segments with flat-faced translating fpllower. It is easy to analyse and compare the motion characters of the translating follower driven by the disk cam with the disk cam approximated by some circular segments. A new way is hewn out in order to evaluate how good disk cam profile curves approximated by some circular segments and manu-factured by CNC Tools Machine is formed in cam's CAM system. It is precise to calculate many groups of value on its displacement curve, velocity curve, acceleration curve, and jerk curve accordingly as some relative points on circular segments. There fore, after substituting the approximated cam for the design cam, we decide how much influence of motion characters will be brought. At the same time, when a disk cam profile is being approximated, these values will provide a quantity foundation of controlling the motion characters of the cam.