TPWJ, 2016, #7, 42-46 pages
Application of robotic and mechanized welding under disturbing factor conditions
Journal The Paton Welding Journal
Publisher International Association «Welding»
ISSN 0957-798X (print)
Issue #7, 2016 (July)
E.V. Shapovalov, V.V. Dolinenko, V.A. Kolyada, T.G. Skuba And F.S. Klishchar
E.O. Paton Electric Welding Institute, NASU, 11 Kazimir Malevich Str., 03680, Kiev, Ukraine. E-mail: firstname.lastname@example.org
The work studies the main problems of automation of processes of multi-pass MIG/MAG welding of large-dimension parts in all spatial positions under conditions of low repeatability of assembly operations. Necessity is shown and, at the same time, insufficiency of application of only laser-television sensor for adapting purpose. A procedure was proposed for equipping a robot-technical (mechanized) welding complex with the computer vision means such as a system of laser-television and video-pyrometric sensors. The results of development of technical means, algorithmic and software support of adaptive welding complex are presented. Proposed control algorithms use the results of on-line measurement of geometry parameters of preparation of butt joint groove as well as position of molten pool. It is shown that the adaptive robotic system performes all the basic functions, typical for it, namely adjustment of electrode position and parameters of welding mode under disturbing factor conditions, and is capable to provide necessary geometry and mechanical characteristics of the weld. As an example, this work uses a robotic complex of ABB company, including welding robot ABB IRB-1600, equipped with laser-television and video-pyrometric sensors, and arc power source ESAB Aristo MIG 5000I. The welding experiments showed that the developed software and hardware allow adapting robotic technical complex for application in welding of butt joints under effect of disturbing factors such as gap size change, distortion of electrode wire, ambient temperature change etc. 8 Ref., 6 Figures.
welding robot, manipulator, geometry and technical adapting, automatic control system, operator interface
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