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Error compensation of free-form surface with critical area based on T-spline surface reconstruction

机译:基于T条状表面重建的临界区域自由形状表面的误差补偿

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摘要

In this study, a novel method for error compensation of free-form surface with critical area is investigated. With the proposed method, the machining accuracy of the surface can vary from area to area according to the precision requirement. The local refinement of the T-spline surface is used to set more sampling points in the critical area. A compensate surface is constructed according to the on-machine measurement data to improve the machining accuracy of the surface. Simulation result shows that the T-spline surface has better fitting accuracy compared with the NURBS surface, given the same coordinates information of the surface. Verification experiments showed that the mean machining error of the normal area is improved by 62.1%, while the mean machining error of the critical area is improved by 73.9%.
机译:在该研究中,研究了一种具有临界区域的自由形状表面的误差补偿的新方法。 利用所提出的方法,根据精度要求,表面的加工精度可以从面积到区域不同。 T条状表面的本地改进用于在关键区域中设置更多的采样点。 根据机上测量数据构造补偿表面以提高表面的加工精度。 仿真结果表明,与NURBS表面相比,T条状表面具有更好的拟合精度,给出了表面的相同坐标信息。 验证实验表明,正常区域的平均加工误差得到了62.1%,而临界区域的平均加工误差得到73.9%。

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