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Development of Intelligent Filler Wire Feeding Device for Improvement of Weld quality  

Lee Jae-Seok (고등기술연구원 로봇/생산기술센터)
Sohn Young-Il (고등기술연구원 로봇/생산기술센터)
Park Ki-Young (고등기술연구원 로봇/생산기술센터)
Lee Kyoung-Don (고등기술연구원 로봇/생산기술센터)
Publication Information
Journal of the Korean Society for Precision Engineering / v.23, no.7, 2006 , pp. 59-66 More about this Journal
Abstract
In laser welding, automatic seam tracking is important to adjust the laser head position in real time as it moves along the seam. Also if the joint gap is occurred, filling the missing material into the joint gap is necessary to prevent welding defects and bad welding quality. In general, the joint gap width is not constant along the seam due to a variety of reason. So it is essential to control the filler wire speed into the joint gap to acquire good welding quality. This paper describes an intelligent filler wire feeding device which can control 3-dimensional seam tracking and the filler wire speed by measuring the gap position and the joint gap width in laser welding. We call this device as Smart Micro Control system(SMC). To achieve this objective, we assessed weld quality in 2mm sheets of A16061 which had various gap width by using the developed device. From the experimental results, It was found the possibility that the developed device could be used in welding various 3-dimensional structures.
Keywords
Wire feeding device; Filler wire; Nd:YAG Laser; Gap; Seam tracking;
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Times Cited By KSCI : 1  (Citation Analysis)
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