基于电子图纸模板的钣金件快速视觉定位技术  

Rapid visual positioning technology of sheet metal parts based on electronic drawing template

作　　者：肖雅峰 何志勇[1] 林嵩 XIAO Ya-feng;HE Zhi-yong;LIN Song(School of Mechanical and Electrical Engineering,Soochow University,Suzhou 215325,Jiangsu Province,China;School of Mechanical and Electrical Engineering,Harbin Institute of Technology,Harbin 150000,China)

机构地区：[1]苏州大学机电工程学院,江苏苏州215325 [2]哈尔滨工业大学机电工程学院,哈尔滨150000

出　　处：《信息技术》2023年第6期24-29,共6页Information Technology

基　　金：国家重点研发计划资助(2018YFB1309201)。

摘　　要：结合CAD,提出了一种基于电子图纸的钣金件快速视觉定位技术。依据CAD的俯视图得到钣金件的边缘轮廓模板,同时搜索钣金图像金字塔进行模板匹配,从而提高了模板匹配的速度。针对边缘不清晰及边缘不完整等问题,以内轮廓为模板,依据内轮廓的相对位置关系求取工件中心点,得到钣金件方位的精确值。最后实验验证该方法的准确率和稳定性,误差在4mm内,满足工业生产需求。Combined with CAD,a rapid visual positioning of sheet metal parts based on electronic drawings is proposed.The edge contour template of sheet metal parts is obtained according to the top view of CAD,and the template matching is carried out by searching the gold tower of sheet metal image,thus improving the speed of template matching.In terms of the problem of unclear edge or incomplete edge,the center point of the workpiece is obtained by taking the inner contour as template and according to the relative position of the inner contour,the exact value of the sheet metal orientation is obtained.Finally,the accuracy and stability of the method are verified by experiments,and the error is within 4mm,which can meet the needs of industrial production.

关 键 词：钣金件 CAD电子图纸 内轮廓 模板匹配 

分 类 号：TP278[自动化与计算机技术—检测技术与自动化装置]