图像处理技术检测微型冠状保持架形位误差  

Measurement on Geometrical Error of Miniature Crown Cage Using Image Processing Technology

作　　者：黄迪山[1] 孙罕[1] 刘玉霞[1] 莫远珍 傅慧燕 

机构地区：[1]上海大学机电工程与自动化学院,上海200072 [2]上海天安轴承有限公司,上海200230

出　　处：《轴承》2011年第4期41-44,共4页Bearing

摘　　要：基于图像处理原理,提出了检测微型轴承冠状保持架多段冠状体圆度误差和同心度的方法。将显微视觉获取的保持架图像进行处理和边缘识别,对于识别得到的冠状体边缘点,运用最小二乘法得到拟合圆和圆心,从而计算出边缘点所形成的最大半径和最小半径,两者差值即为保持架冠状体的圆度误差;对于保持架各段冠状体圆弧,分别拟合出各自的圆心,进而求出保持架冠状体的同心度误差。Based on image process principle,a detection method of roundness error and concentricity is presented for a crown cage in a miniature bearing.The image processing and boundaries recognition on the crown cage are introduced,the outside point coordinates of the boundaries are recognized,and the fittest circle,the minimal and the maximal circle are estimated according to the least square method（LSM）.As a result,the roundness error is estimated as the difference between the radius of minimal circle and maximal circle,and the concentricity of each are estimated through searching the center of each arc of circle.

关 键 词：冠状保持架 图像处理 最小二乘法 圆度误差 同心度 

分 类 号：TH133.33[机械工程—机械制造及自动化] TP751.1[自动化与计算机技术—检测技术与自动化装置]