An edge identification method for gap in-line measurement based on fillet assumption

被引：0
|
作者：
Zhao, Qijian [1 ]
Sun, Pengfei [1 ]
Cao, Yu [1 ]
Zhang, Liangxin [1 ]
机构：
[1] China Acad Engn Phys, Inst Mech Mfg Technol, 64 Mianshan Rd, Mianyang 621900, Sichuan, Peoples R China
来源：
MEASUREMENT & CONTROL | 2022年 / 55卷 / 9-10期
关键词：
Edge identification; fillet assumption; gap evaluation; confocal scanning; in-line measurement; CUTTING EDGE; RADIUS;
D O I：
10.1177/00202940221117272
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
The optical measurement technology could reduce manual work and improve quality in assembly. The confocal scanning scheme is proposed to measure the narrow gap in-line but it is hard to identify the edges of a gap. This paper proposed an edge definition and presented an edge identification method for gap measurement. The edge profile is defined as a part of a circle, which could be identified by the shutter time feature. The defined edge point could be calculated by fitting the edge profile, and then the width of a gap section is calculated by two edge points. The width of a gap can be evaluated by the average of several gap section. The experimental results indicate that the repeatability of the method is less than 2 mu m and the precision of the measurement is higher than +/- 2.5 mu m. The proposed method is feasible for in-line measurement application in assembly.
引用
收藏
页码：996 / 1003
页数：8
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