Visual detection method of chamfer Ron the root bottom of textile workpiece roller  

罗拉纺织工件根底部倒角R的视觉检测技术研究（英文）

作　　者：HU Ling-hao LIU Chang jie SHI Chun rain FU Lu hua LU Gang 胡凌皓;刘常杰;石春珉;付鲁华;卢钢(天津大学精密测试技术与仪器国家重点实验室,天津300072;中国铁道科学研究院中铁检验认证中心机车车辆检验站,北京100015)

机构地区：[1]State Key Laboratory of Precision Measuring TechnoZogy and Instruntents,Tianjin University,Tianjin 300072 [2]China Rail-way Test ＆ Certification Center Locomotive ＆ Car Inspection Lab,China Acaderrzy of Rail-way Sciences,Beijing 100015,China

出　　处：《Journal of Measurement Science and Instrumentation》2018年第3期205-213,共9页测试科学与仪器（英文版）

基　　金：National Science and Technology Major Project of China(No.2016ZX04003001);High-tech Ship Research Project(1st phase of Low-speed Marine Engine Engineering)

摘　　要：Roller is an important workpiece of automatic spinning machine. Only if the chamferR on the root bottom of roller＇s guide pillar meets processing accuracy requirement can the end face of one roller＇s guide pillar match the correct position of another roller＇s end face on the guide hole. Therefore, the size of chamfer R on the root bottomof the roller＇s guide pillar has an important influence on the operating state of automatic spinning machine. In order to achieve the rapid, automatic and precise measurement of chamfer R on the root bottom of roller, an auto detection system }＇or roller~ s chamfer based on computer vision technology is proposed. Firstly, the principle of measurement based on computer vision technology is introduced. And then the extraction method of charnfer^s characteristic parameters is presented, which uses image processing technique to obtain these characteristic parameters by means of collected images of roller contour, including extraction of region of interest, extraction of subpixel precise edge, segmentation of arc and line, fittingof geometric primitives, etc. Finally, after experimental verification, the measurement error is within ＋ 5 μm and repeated accuracy is 0.1 pm. The results show that this measurement method is applicable to not only the chamfer on the textile workpiece, but also the workpieces of shaft type with various of sizes.

关 键 词：textile workpiece ROLLER CHAMFER image measurement auto detection 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]