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复杂轮廓环的等距算法是ＣＡＤ／ＣＡＭ系统中重要的基本算法之一，该算法的完善与否决定着ＣＡＤ／ＣＡＭ系统的基本性能。许多研究人员针对这个问题提出了若干有益的解决方案，但这些算法的结果并不是特别理想。本文针对数控加工中复杂轮廓环的等距问题，提出了一种有效的环原始等距、原始等距后环的自交处理算法。其基本思想是对复杂轮廓环经原始等距和过渡后形成的复杂网状环进行拓扑关系的规整和判断，从而生成正确的等距结果环。在此基础上开发出了平面型腔行切加工模块和复杂多曲面三轴层切法粗加工模块，并通过这两个模块的应用反复验证了该算法的正确性，实践证明该算法可靠、效率高，完全能满足ＣＡＤ／ＣＡＭ系统的需要。
The equidistant algorithm of complex contour ring is one of the most important basic algorithms in CAD / CAM system. The improvement of this algorithm determines the basic performance of CAD / CAM system. Many researchers have put forward several beneficial solutions to this problem, but the results of these algorithms are not particularly satisfactory. In this paper, aiming at the equidistant problems of complex contour rings in NC machining, an effective self-intersecting algorithm for ring equidistant and equidistant back rings is proposed. The basic idea is to generate the correct equidistant result loop by normalizing and judging the topological relations of complex mesh loops formed by the original equidistance and transition. On this basis, the planar cavity cutting and processing module and the complex multi-surface triaxial cutting method rough machining module are developed. The correctness of the algorithm is verified through the application of the two modules. The practice proves that the algorithm is reliable, High efficiency, can fully meet the needs of CAD / CAM system.