Approximate methods for simulation and verification of numerically controlled machining programs
Approximate methods for simulation and verification of numerically controlled machining programs
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DOI：
10.1007/bf01999101
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发表时间：
1989-11
期刊：
影响因子：
--
通讯作者：
R. B. Jerard;S. Hussaini;R. Drysdale;B. Schaudt
中科院分区：
文献类型：
--
作者：
R. B. Jerard;S. Hussaini;R. Drysdale;B. Schaudt
介绍了数控加工程序的仿真与验证算法。与基于传统实体造型系统的数控仿真相比，这些模型的设计给出了近似的结果，但大大减少了计算机时间。零件的表面被离散成表面点集（SPS），其点间距取决于切削刀具的尺寸和形状、局部表面曲率以及近似模拟的所需精度。实体建模方法的表面-表面相交计算被刀具运动包络的表面与从表面点发出的直线的相交所取代。该方法适用于3轴和5轴加工。示例测试用例，并讨论了实现和效率问题。
Algorithms for simulation and verification of Numerically Controlled (NC) machining programs are presented. Compared to NC simulation based on conventional solid modeling systems, these models are designed to give approximate results, but with a substantial decrease in computer time. The surfaces of the part are discretized into a Surface Point Set (SPS) with a point spacing dependent on cutting tool size and shape local surface curvature and the desired accuracy of the approximate simulation. The surface-surface intersection calculations of the solid modeling approach are replaced by the intersection of the surface of the tool movement envelope with straight lines emanating from the surface points. The methods are applicable to both 3 and 5 axis machining. Samples test cases are presented, and implementation and efficiency issues are discussed.