钣金零件反求数据分层处理算法研究

中国机械工程 ›› 2010, Vol. 21 ›› Issue (06): 679-682.

钣金零件反求数据分层处理算法研究

唐先智;刘飞;李绪武

重庆大学机械传动国家重点实验室,重庆,400044

出版日期:2010-03-25 发布日期:2010-04-02

Study on Layed Data Processing of Sheet Metal and Its Applications in Reverse Engineering

Tang Xianzhi;Liu Fei;Li Xuwu

The State Key Laboratory of Mechanical Transmission,Chongqing University,Chongqing,400044

Online:2010-03-25 Published:2010-04-02

摘要/Abstract

摘要：

针对钣金零件在反求过程中由于变形而引起的扫描点云杂乱层叠现象,提出了一种新的点云层叠处理算法,将层叠点云沿同一个方向切片,找到合适的起始位置,构建最优化的二维多边形曲线,通过曲线构建曲面,将点云分成两部分以有利于层叠点云的处理,减小所构建模型的形状误差。将该算法应用到某汽车底盘的层叠点云处理中,应用结果证明该算法是有效的。

关键词:

反求工程, 钣金零件, 点云层叠处理算法, 形状误差

Abstract:

For reverse engineering of sheet metal deformation caused by scanning point cloud clutter layering and so on,this paper proposed a new algorithm to deal with point cloud layering,it can be sliced point cloud along the same direction,then to find a suitable starting position,and to construct the optimized two-dimensional polygonal curves.Construction of the surface through the curves,this surface can be divided the points into two parts,it can deal with the point cloud easily,reduce the point cloud as a result of layering shapes to build the model error.

This algorithm was applied to a motor vehicle chassis point cloud processing,the results show the effectiveness of the algorithm.

Key words: reverse engineering, sheet metal, layer point cloud processing algorithm, form error

中图分类号:

TH166.4

唐先智, 刘飞, 李绪武.

钣金零件反求数据分层处理算法研究

[J]. 中国机械工程, 2010, 21(06): 679-682.

TANG Xian-Zhi, LIU Fei, LI Xu-Wu.

Study on Layed Data Processing of Sheet Metal and Its Applications in Reverse Engineering

[J]. China Mechanical Engineering, 2010, 21(06): 679-682.