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Proceedings Paper

Development of seam tracking control using monitoring system for laser welding (iL-Viewer)
Author(s): Hideo Takahashi; Katsura Oowaki; Ichiro Morita; Kazuyuki Tsuchiya
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Paper Abstract

Automatic or semi-automatic welding methods are required for improving efficiency and safety, then various seam tracking technologies have been developed as an important part of them. For laser welding, although industrial application is magnifying widely, traditional seam-tracking technologies are difficult to apply. We have developed new monitoring system of weld zone and its around at the same time under high luminosity of laser welding, using the 2nd harmonics generator of pulsed YAG laser for illuminating the situation of weld. Using this system, we can observe the welding situations clearly in monitors, even for especially high luminous welding phenomenon, such a laser welding. Using this system, we have developed the seam tracking control system of laser welding by analyzing the images in computer in order to decide the position of the weld line and beam point and conducting tbe feedback coontrol of laser torch position. For examining this system, we conducted the I-bat welding on stainless steel plate changing welding track and welding speed. Through the experiment, followings were understood. This system can use high speed welding and works sufficiently in laser welding.

Paper Details

Date Published: 3 March 2003
PDF: 6 pages
Proc. SPIE 4831, First International Symposium on High-Power Laser Macroprocessing, (3 March 2003); doi: 10.1117/12.497927
Show Author Affiliations
Hideo Takahashi, Ishikawajima-Harima Heavy Industries Co., Ltd. (Japan)
Katsura Oowaki, Ishikawajima-Harima Heavy Industries Co., Ltd. (Japan)
Ichiro Morita, Ishikawajima-Harima Heavy Industries Co., Ltd. (Japan)
Kazuyuki Tsuchiya, Ishikawajima-Harima Heavy Industries Co., Ltd. (Japan)

Published in SPIE Proceedings Vol. 4831:
First International Symposium on High-Power Laser Macroprocessing
Isamu Miyamoto; Kojiro F. Kobayashi; Koji Sugioka; Reinhart Poprawe; Henry Helvajian, Editor(s)

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