基于焊縫激光跟蹤技術(shù)的波紋板焊接機(jī)器人控制系統(tǒng)研發(fā)
[Abstract]:With the continuous improvement of the level of industrialization automation in China and the continuous promotion of "made in China 2025", as the main force of automation equipment, industrial robots have received more and more attention. In recent years, with the wide application of wavy plate in freight car, container and other industries, the demand of wavy plate welding robot is increasing. Therefore, the development of a wavy plate welding robot system not only meets the needs of the market, but also meets the key areas of high-end equipment manufacturing and robot support in the "made in China 2025" guide. Before the development of the system, the manufacturing process, type and weld characteristics of the corrugated plate are analyzed, on the basis of which the carbon dioxide shielded welding is determined as the welding mode of the wavy plate, and the selection principles of welding wire diameter, welding voltage, welding current, gas pressure and other parameters under different plate thickness are analyzed. The relationship between the control voltage and the given current is established, so that the voltage and current can be adjusted by the upper computer software. On the basis of studying the welding technology, the mechanical structure of the wavy plate welding robot is analyzed, and the overall scheme and hardware of the control system are designed. The mechanical structure of wavy plate welding robot mainly includes robot body structure and conveying clamping structure. The robot body adopts rectangular coordinate structure, which mainly includes X axis, Y axis, Z axis and C axis. Each moving shaft plays different roles in the welding process, which is also the design source of each moving shaft, while the conveying clamping structure is designed according to the process of feeding, clamping and cutting. Based on the analysis of the mechanical structure of the robot, the control system of the wavy plate welding robot based on the fixed height motion controller is established, and its hardware interface circuit is designed. As the "eye" of robot, the selection of laser tracker and the analysis of detection condition are important prerequisites for the operation of the system. In this system, the LK- G laser tracker of Keenz Company of Japan is selected, and the cross installation mode is established to obtain the transverse and vertical position information. In order to obtain the actual position information, the two-point calibration method is used to calibrate the laser tracker, and the communication mode between the motion controller and the laser tracker is determined by comparison. Based on the research of welding technology and hardware structure, the software system of wavy plate welding robot is developed. Mainly includes: man-machine interface design and functional module design. The man-machine interface includes: main interface, manual interface, automatic interface, I / O diagnostic interface, system parameter interface, machining parameter interface; functional module design mainly includes: zero return module, communication module, welding processing module, machining pause module, machining continuation module, I / O diagnosis module, parameter setting module and swing gun module design. In order to verify the stability of the system and test the welding effect, the welding experiments of multiple wavy plates are carried out. From the final welding effect, it can be concluded that the system can weld a more beautiful and complete weld.
【學(xué)位授予單位】:濟(jì)南大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:TG409
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