铆接薄板孔组几何参数视觉测量方法研究  

Research on Visual Measurement Methodfor Geometric Parameters of Hole Group in Riveted Thin Plate

作　　者：赵棋唯 李永桥[2] 谢松乐 ZHAO Qi-wei;LI Yong-qiao;XIE Song-le(City College,Southwest University of Science and Technology,Sichuan Mianyang621010,China;School of Manufact-uring Science and Engineering,Southwest University of Science and Technology,Sichuan Mianyang621010,China)

机构地区：[1]西南科技大学城市学院,四川绵阳621010 [2]西南科技大学制造科学与工程学院,四川绵阳621010

出　　处：《机械设计与制造》2020年第9期158-161,共4页Machinery Design & Manufacture

基　　金：四川省教育厅资助科研项目—垂直螺旋输送机响应面模型的构建及关键结构的优化研究(17ZB0444)。

摘　　要：针对传统孔组几何参数测量方法存在的效率低,无法适应多种孔形变化的问题,提出了一种利用机器视觉分类测量孔组几何参数的方法。对获取的薄板铆接孔组图像,进行阈值分割、ROI提取、孔形识别等处理,采用质心法获取目标孔组的中心坐标并利用孔形面积与直径、边长之间的几何关系获得孔组中各个孔的直径或边长,实现了孔组几何参数的计算。实验结果表明:中心、直径及边长的测量结果达到了精度要求,解决了传统薄板孔组几何参数测量方法效率低且适应性低的问题。For solving the problem about low efficiency of the traditional method for measuring the geometric parameters of hole group,and can not adapt to the variation of various hole shapes,a method of classify measuring geometric parameters of the hole group based on machine vision is proposed in it.The threshold segmentation,ROI extraction,hole shape recognition and so on are used to obtain the image of the riveted hole group.The center coordinates of the target hole group are obtained by using the centroid method,diameter and side length of the hole group is obtained by the geometric relation between the side lengths and area,so the geometric parameters of the hole group are calculated.The experimental results show that the measurement results of center,diameter and side length meet the precision requirement and solve the problem of low efficiency and low adaptability of traditional methods for measuring the geometric parameters of thin plate hole group.

关 键 词：孔组 机器视觉 图像处理 孔形识别 参数提取 

分 类 号：TH16[机械工程—机械制造及自动化] TP391.41[自动化与计算机技术—计算机应用技术]