| NURBS曲线高速高精度加工的插补控制 |
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| 引用本文： | 游有鹏,王珉,朱剑英. NURBS曲线高速高精度加工的插补控制[J]. 计算机辅助设计与图形学学报, 2001, 13(10): 943-947 |
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| 作者姓名： | 游有鹏 王珉 朱剑英 |
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| 作者单位： | 南京航空航天大学机电学院, |
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| 基金项目： | 国家自然科学基金( 0 5 9990 470 )，江苏省应用基础基金( BJ95 0 49)资助 |
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| 摘 要： | 针对复杂零件高速精密加工的需求，提出了一种NURBS曲线的实时插补算法，它基于NURBS曲线的矩阵表示，通过适当的插补预处理、运用参数预估计与校正的插实施以及合理的近似计算方法，简化了插补的实时计算，保证了算法的实时性，特别是引入了插补误差和进给加速度的实时监控，使进给速度能随曲线曲率自适应调整，实现了NURBS曲线高速高精度加工的插补控制。
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| 关 键 词： | NURBS曲线 高速精密加工 CAM 数控加工 数控机床 插补控制 |
| 修稿时间： | 2000-08-21 |
An Interpolator for NURBS Curve Machining with High-Speed and High Accuracy |
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| YOU You Peng WANG Min ZHU Jian Ying. An Interpolator for NURBS Curve Machining with High-Speed and High Accuracy[J]. Journal of Computer-Aided Design & Computer Graphics, 2001, 13(10): 943-947 |
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| Authors: | YOU You Peng WANG Min ZHU Jian Ying |
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| Abstract: | NURBS has been widely used in CAD/CAM for modeling complex parts. To improve the capability of CNC machines in machining complex parts, modern interpolators capable of generating NURBS curves are required. In this paper a real time interpolator for NURBS curves based on parameter prediction and correction is presented. The proposed approach provides good performance in two respects to meet the requirements of high speed and high accuracy machining. First, the calculation time is significantly reduced by applying preprocessing, avoiding to compute the derivative and radius of curvature of curves. Second, feed rate can adapt to the curve's curvature to limit the contour error and feed acceleration within the allowable range. |
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| Keywords: | CNC interpolator NURBS curve high speed and precision machining CAM |
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