Design and Calibration of Visual Inspection Tool for Welded Pipe Flange End Face

LUO Yijin; Lü Zhengyang; ZHANG Liyan

doi:10.16080/j.issn1671-833x.2022.10.113

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Design and Calibration of Visual Inspection Tool for Welded Pipe Flange End Face

更新时间：2025-10-30

- Design and Calibration of Visual Inspection Tool for Welded Pipe Flange End Face
- Aeronautical Manufacturing Technology Vol. 65, Issue 10, Pages: 113-120(2022)
- 作者机构：
  
  南京航空航天大学机电学院,南京,210016
- 作者简介：
- 基金信息：
- DOI：10.16080/j.issn1671-833x.2022.10.113
  CLC：
- Published：2022
- 稿件说明：
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罗艺进，吕政阳，张丽艳. 焊接导管法兰端面视觉检测工装的设计与标定[J]. 航空制造技术, 2022, 65(10): 113-120.

LUO Yijin, Lü Zhengyang, ZHANG Liyan. Design and Calibration of Visual Inspection Tool for Welded Pipe Flange End Face[J]. Aeronautical Manufacturing Technology, 2022, 65(10): 113-120.
罗艺进，吕政阳，张丽艳. 焊接导管法兰端面视觉检测工装的设计与标定[J]. 航空制造技术, 2022, 65(10): 113-120. DOI： 10.16080/j.issn1671-833x.2022.10.113.

LUO Yijin, Lü Zhengyang, ZHANG Liyan. Design and Calibration of Visual Inspection Tool for Welded Pipe Flange End Face[J]. Aeronautical Manufacturing Technology, 2022, 65(10): 113-120. DOI： 10.16080/j.issn1671-833x.2022.10.113.

摘要

为了快速精确地获取多分支焊接导管法兰安装姿态参数，设计了一种用于导管法兰端面视觉检测的柔性测量工装，给出了测量工装的标定方法。测量工装利用卡爪夹紧导管，通过调节卡爪的伸缩以适应不同类型、不同管径的导管，同时具有良好的自定心能力。测量工装的底面有一定数量的视觉目标点，通过测量工装上的视觉目标点可以建立一个测量工装坐标系，该坐标系可以表征法兰端面的法向量、中心点位置以及法兰上圆孔的周向位置。试验证明，该方法所获得的法兰端面位置精度为 0.070mm，重复定位的 2 倍标准差（2σ）为 0.044mm。

Abstract

In order to obtain the installation posture of ﬂange end faces in multi-branch welded pipelines quickly and accurately

a ﬂexible measurement tool

together with a calibration procedure

is proposed for visual inspection. Each ﬂange end face is fxed by the measurement tool’s claw

whose scalability could adjust to various types of pipelines with different diameters. In addition

the measurement tool possesses a good self-centering capability. A number of visual target points are laid on the bottom of the measurement tool. By visually measuring the target points on the calibrated measurement tool

a measurement coordinate system can be built up

which could represent the normal vector

the location of center point and circumferential position of the ﬂanges. The experiments show that the absolute location accuracy of the ﬂanges end faces is 0.070mm

and the double standard deviation of repeated positioning is 0.044mm.

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