A control system for uniform bead in fillet arc welding on tack welds |
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Authors: | Jae-Woong Kim Jun-Young Lee |
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Affiliation: | (1) School of Mechanical Eng., Yeungnam University, Kyongsan Kyongbuk, 712-749, Korea;(2) Dept. of Mechanical Eng., Graduate School of Yeungnam University, Kyongsan Kyongbuk, 712-749, Korea |
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Abstract: | Positioning a workpiece accurately and preventing weld distortion, tack welding is often adopted before main welding in the
construction of welded structures. However, this tack weld deteriorates the final weld bead profile, so that the grinding
process is usually performed for a uniform weld bead profile. In this study, a control system for uniform weld bead is proposed
for the fillet arc welding on tack welds. The system consists of GMA welding machine, torch manipulator, laser vision sensor
for measuring the tack weld size and the database for optimal welding conditions. Experiments have been performed for constructing
the database and for evaluating the control capability of the system. It has been shown that the system has the capability
to smooth the bead at the high level of quality. |
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Keywords: | GMA welding Tack weld Fillet welding Uniform bead shape Laser vision sensor |
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