吉林大学学报(工学版) ›› 2013, Vol. 43 ›› Issue (04): 945-950.doi: 10.7964/jdxbgxb201304017

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Coaxiality measurement of large-size forged components based on CCD

TONG Jin1,2, WANG Ya-hui1,2, LU Ji-sheng3, ZHANG Shu-jun3, CHEN Dong-hui1,2   

  1. 1. Key Laboratory of Bionic Engineering of Ministry of Education, Jilin University, Changchun 130022, China;
    2. College of Biological and Agricultural Engineering,Jilin University,Changchun 130022,China;
    3. School of Computing and Technology,The University of Gloucestershire,The Park,Cheltenham GL50 2RH,UK
  • Received:2012-10-03 Online:2013-07-01 Published:2013-07-01

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Abstract:

Due to the huge size and high temperature, it is a difficult task to on-line measure the geometrical parameters of large-size forged components. To solve this problem, a dimensional measurement system for large-size forged components was developed based on planar Charge-coupled Device (CCD), which can be used to for remote and contactless measurements of various geometrical parameters of high temperature forged components. The focus of this article is placed on coaxiality measurement of multi-diameter forged shaft. The mathematical model was established using planar CCD imaging model. Experiment results show that the measurement error is less than 1.5 mm for general size gorging (400-550 mm in diameter), which means the relative measurement error is about 0.3%. Compared with existing measurement systems, the proposed system has many advantages, such as simple operation, convenience and high reliability etc. It is estimated that about 7% of raw materials can be saved using the proposed system.

Key words: mechanical manufacture and automation, large-size forging, CCD, multi-diameter, coaxiality detection

CLC Number: 

  • TH164

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