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. K e y w o r d s : welding robot, manipulator, geometry and technical adapting, automatic control system, operator interface Received 26.01.2016 figure 6. Simulation model of adaptive RTC: 1 -butt scanning trajectory before welding; 2 -corrected trajectory of torch movement (with oscillations)
предложен подход к созданию технологии сварки тиг элементов конструкций сложной геометрической формы из нержавеющей стали при помощи робототехнической адаптивной системы, которая позволяет адаптироваться к изменению формы поверхности свариваемых изделий в процессе сварки и минимизации вероятности появления дефектных сварных соединений и цветов побежалости на поверхности изделия. разработана технология роботизированной сварки неплавящимся электродом углового соединения тонколистовых элементов конструкций из нержавеющей стали марки AiSi 304, 210, 430 с толщиной соединяемых листов от 0,8 до 1,5 мм. результаты сварочных экспериментов показали, что разработанные алгоритмы взаимодействия между техническими средствами адаптации могут быть использованы в системах автоматического управления процессом сварки тиг. Библиогр. 5, табл. 2, рис. 10. К л ю ч е в ы е с л о в а : сварка ТИГ, нержавеющая сталь, сложная геометрическая форма, робототехническая адаптивная система, угловые соединения, тонколистовая конструкция
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