| 采用截面特征点云的NURBS自由曲面构建 |
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| 引用本文： | 刘宏,范如源,曾樑,罗丽丽. 采用截面特征点云的NURBS自由曲面构建[J]. 现代制造工程, 2012, 0(5): 81-84 |
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| 作者姓名： | 刘宏 范如源 曾樑 罗丽丽 |
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| 作者单位： | 中国工程物理研究院机械制造工艺研究所,绵阳,621900 |
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| 摘 要： | 结合NURBS曲面的构建理论,以工程软件UG为平台,探讨了基于截面特征点云的NURBS自由曲面构建的工程实现方法.实现了由截面特征点云进行NURBS曲线拟合,再由拟合曲线进行自由曲面的构建过程,并从曲面的表面状态与误差两个方面对构建的自由曲面进行评估.实践表明:采用该方法构建的自由曲面能保证NURBS曲面拟合质量,且精度高,能有效地反映实物原型.
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| 关 键 词： | 点云数据 截面特征 自由曲面 曲面构建 非均匀有理B样条 反求工程 |
NURBS freeform surface construction from points-cloud of sectional feature |
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| Liu Hong , Fan Ruyuan , Zeng Liang , Luo Lili. NURBS freeform surface construction from points-cloud of sectional feature[J]. Modern Manufacturing Engineering, 2012, 0(5): 81-84 |
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| Authors: | Liu Hong Fan Ruyuan Zeng Liang Luo Lili |
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| Affiliation: | (Institute of Mechanical Manufacturing Technology,CAEP,Mianyang 621900,Sichuan,China) |
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| Abstract: | By combining the theory of NURBS surface construction,using UG as an engineering software platform,discussed the method of engineering implementation for NURBS freeform construction from points-cloud of sectional feature.With an example,achieved the process by the NURBS curve fitting from points-cloud of sectional feature,and then by the NURBS surface construction from fitted curves,also assessed the constructed freeform surface from both of the surface state and errors.Example showed:by this method,could guarantee the quality of NURBS surface fitting,could construct a high precision surface and could effectively reflect the physical prototype. |
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| Keywords: | points-cloud data sectional feature freeform surface surface construction non-uniform rational B-spline reverse engineering |
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