Visual alignment technology for seamless steel pipe linearity measurement

Bin Wu; Ting Xue; Jigui Zhu; Shenghua Ye

doi:10.1117/12.694440

10 June 2006 Visual alignment technology for seamless steel pipe linearity measurement

Bin Wu, Ting Xue, Jigui Zhu, Shenghua Ye

Proceedings Volume 6344, Advanced Laser Technologies 2005; 634437 (2006) https://doi.org/10.1117/12.694440
Event: Advanced Laser Technologies 2005, 2005, Tianjin, China

Abstract

Linearity measurement is the key problem in seamless steel pipe industry. For the modern industry of seamless steel pipe production, the traditional method cannot meet the needs of on-line and real-time measurement performance. Recently, visual inspection has developed rapidly and has the advantages of high speed, high precision, non-contact, automation and high manoeuvrability. So a novel approach to on-line and real-time linearity measurement of seamless steel pipe based on visual alignment technology is presented in this paper. Firstly the theory of visual alignment measuring is introduced. And then an on-line and real-time linearity measuring system, which consists of multistructured light sensor for seamless steel pipe factory of Tianjin, is invented with the technology of visual alignment. And key technologies for a visual alignment, such as the optimum design of high precision light-structured sensor, coordinates integration of multisensor, the mathematical model of visual measurement, and algorithm for ellipse center computations with high precision are studied in detail. Measurement results show that the measuring system is reasonable and can measure not only the linearity but also the coaxiality of large-scale parts.

Citation Download Citation

Bin Wu, Ting Xue, Jigui Zhu, and Shenghua Ye "Visual alignment technology for seamless steel pipe linearity measurement", Proc. SPIE 6344, Advanced Laser Technologies 2005, 634437 (10 June 2006); https://doi.org/10.1117/12.694440

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