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细分曲面可以方便地表示任意拓扑结构的光滑曲面 ,正逐渐成为自由曲面造型的有力工具 ;细分曲面的加工是其工业应用的基础。给出一个用于 L oop细分曲面数控加工的无干涉刀具轨迹生成的实用算法 :首先在不考虑干涉的情况下 ,由 L oop细分曲面的初始控制网格直接计算生成刀触数据 ;然后通过对刀具干涉条件的分析 ,确定干涉区域 ,去除产生干涉的刀触点 ;最后将刀触数据转换为无干涉的刀位数据。该算法提供了对基于细分曲面表示的实际零件进行曲面加工的理论基础
Subdivision surface can easily represent the smooth surface of any topology, is becoming a powerful tool for freeform surface modeling; subdivision surface processing is the basis of its industrial applications. A practical algorithm for toolless trajectory generation for Lopop subdivision surface NC machining is given. Firstly, the tool contact data is generated directly from the initial control grid of Lopop subdivision surface without considering the interference. Then, Through the analysis of the interference conditions of the cutter, the interference area is determined, the interference of the knife contact is eliminated, and finally the data of the knife contact is converted into the non-interference cutter position data. The algorithm provides the theoretical basis for surface machining of actual parts based on subdivision surfaces