数控加工自动编程中环方向的判断算法

对环的处理是二维数控加工刀具轨迹自动生成算法中的关键之一，在环的自交和互交处理过程中，环的中以确定一个环是否有效。在对以往环的方向判断算法进行分析的基础上，本文提出了一种运用环的面积来判断环方向的算法，该算法具有效率高、通用性强和无需进行各种特例判别的优点。

The Algorithm of Judging the Loop's Direction in NC Tooling Automatic Programming

The operation of loops is one of the keys of CL path automatic programming algorithm. The direction of loops determines whether loops are valid during the operation of loops' self-intersection and mutual intersection. Based on the analyses of previous algorithms, this paper serves as a more universal and efficient method that the area of loops decides the direction of loops.