基于OpenCASCADE的轮廓曲线识别与提取系统研究  

Development of contour curve recognition and extraction system based on OpenCASCADE

作　　者：林尉 张辉[1] 张丽艳 潘阿村 章泓基 朱成顺[1] LIN Wei;ZHANG Hui;ZHANG Liyan;PAN Acun;ZHANG Hongji;ZHU Chengshun(School of Mechanical Engineering,Jiangsu University of Science and Technology,Zhenjiang 212100,China;School of Mechanical and Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 212016,China)

机构地区：[1]江苏科技大学机械工程学院,镇江212100 [2]南京航天航空大学机电学院,南京212016

出　　处：《现代制造工程》2024年第12期114-119,共6页Modern Manufacturing Engineering

基　　金：江苏省产业前瞻技术研发项目(BE2023086)。

摘　　要：为解决激光3D轮廓曲线投影所需的曲线识别与提取问题,提出了一种基于OpenCASCADE(OCC)平台的方法,该方法利用开源的三维几何引擎OCC读取待投影零件的数字化模型,结合相关几何与拓扑数据结构,基于局部几何属性的方法来识别截面曲线轮廓类型,并通过等弧长、分段等采样方式将轮廓坐标数据写入PLY格式文件。基于以上曲线识别与提取方法开发了三维轮廓曲线识别与提取系统,该系统能应用于机械制造、辅材铺层等领域的投影指示,为实现数字化制造提供有效支撑。In order to solve the problem of curve recognition and extraction for laser 3D contour projection,a method based on OpenCASCADE(OCC)platform is proposed.This method uses OCC,an open source 3D geometry engine,to read the digital model of the projected part,combine the relevant geometric and topological data structures,and identify the type of sectional curve based on local geometric properties.Finally,the contour coordinate data is written into the PLY file by sampling methods such as equal arc length and segmentation.Based on the above curve recognition and extraction methods,a 3D contour curve recognition and extraction system is developed.The system can be applied to the projection indication in the fields of machinery manufacturing and composite layering,which provides effective support for the realization of digital manufacturing.

关 键 词：边缘轮廓数据 投影文件 截面特征 OpenCASCADE平台 

分 类 号：TH17[机械工程—机械制造及自动化]