三角网格曲面加工刀具路径生成等误差步长算法研究
Algorithm Research of Equal-error Forward Step Planning for Tool Path Generation of Triangular Mesh Surface

针对三角形网格曲面加工中刀具轨迹的误差均匀性问题，提出了一种等误差步长规划的刀具路径生成算法。该方法将刀具沿网格曲面运动方向的线性误差和转动误差联合作为设计公差，在满足给定精度要求条件下，通过控制设计公差来优化各条刀具轨迹上的刀触点的位置分布，并生成相应的刀位点。在生成完整三角网格曲面刀具路径时充分利用了网格曲面的边界特性，保证了边界一致性。实验表明：该方法生成的刀具路径保持了良好的边界一致性，并显著提高了加工精度和加工质量的均匀性。
An equal-error step tool path generation algorithm is proposed for the uniformity of the tool path errors in the triangular mesh surface machining. The algorithm combines the linear error and rotational error generated from the movement of tool on the mesh surface as the design tolerance. Under the condition of satisfying the required accuracy, the position of the cutter contact points in each of the tool path is optimized with controlling the design tolerance, and the corresponding cutter location points are generated. It ensures the consistency of the boundary by making full use of the characteristics of the boundary of the mesh surface when generating a tool path of the complete triangular mesh surface. The experimental results indicate that the tool path generated from this algorithm maintains a good border consistency, and significantly improves the machining precision and quality uniformity