如果要求将轮廓曲线投影到与曲线的平面垂直的面上，并且曲线不是平面的，则显示以下消息。
Placement outline curves are not planar. floor outline curves are not planar. top outline curves are not planar.
在进行平面凸轮廓形曲线数控编程前，必须首先选择一个数学方程来描述所处理的曲线。
Before NC programming of the contour outline of CAM, a mathematical equation must be deduced to characterize the contour outline of CAM.
将从动件的直线往复移动和定点往复摆动用虚拟摆动统一表示，采用单参数包络曲线理论建立直动和摆动从动件平面盘形凸轮轮廓的统一数学表达式。
In this article, the unified profile expression of the planar CAM mechanism with translation or oscillation follower is established based on the theory of envelopes for 1 parameter family of curves.
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