凸轮自由曲面反求建模技术  

Reverse Modeling Technology for Free Form Surface of Cam

作　　者：张顺琦[1] 秦现生[1] 邓瑞君[1] 尤向荣[1] 

机构地区：[1]西北工业大学机电学院

出　　处：《航空制造技术》2010年第11期68-72,共5页Aeronautical Manufacturing Technology

摘　　要：自由曲面精确建模是凸轮高精度反求的必要前提。针对三坐标测量机获得的自由曲面点云数据,研究了噪声点快速有效的去除算法、边界数据及整体数据的平滑技术、点云数据的筛选与曲面扩展;最后,结合VC强大的数据处理能力以及UG/Open二次开发工具,实现大密度点云数据在UG环境中的快速精确建模。经验证,该方法数据处理效果明显,曲面建模效率和精度高。Modeling free form surface accurately is necessary precondition for cam high-precision reverse. The point cloud is achieved by measuring free surface via coordinate measuring machine（CMM）. Efficient removing algorithm of noisy points, smoothing technology of boundary points and the whole points, filtering of point cloud and expanding of the surface are focused on. Finally, the rapid and precise modeling of high density point cloud in UG environment is realized by combining with VC data processing and UG/Open secondary development tool. The method is tested to improve the efficiency and accuracy of free form surface modeling.

关 键 词：反求工程 自由曲面 UG二次开发 点云数据 

分 类 号：TH132.47[机械工程—机械制造及自动化]