Research And Implementation On The Welding Torch Motion Method Of Middle Groove Automatic Welding

With the rapid development of China’s coal industry, the scraper conveyer constantly to large capacity, long distance, high power, long life and high reliability direction. Accordingly, put forward higher requirements on research and development of high performance scraper conveyor components. The central groove is a key component of the scraper conveyor, its welding quality requirements are also getting higher and higher.The paper, focuses on the characteristics of middle groove welding, to design an automatic welding robot can be applied to the middle groove and similar central cavity of the deep and narrow box, ensure it has better generality, but also as a special welding machine with high efficiency, the main contents are as follows:The first chapter, the present study situation of the domestic and foreign development status and the middle groove is introduced, and based on this, puts forward the main research contents of this paper.The second chapter, according to the welding process of central groove, it is necessary for the central groove of the preheating process of thermal simulation. The preheating process simulation of central groove by using Creo simulate, simulation results accurately display the temperature field change in the preheating process of central groove, has a guiding significance to the design and parts selection of welding robot, it saves the outlay, speeds up the research progress.The third chapter, according to the structure characteristics of middle trough, analysis the function of welding robot must have to complete the welding, and then determine the overall scheme of welding robot, on the function of each component separately the modular design, at the end of each module are respectively the calculation and selection.The fourth chapter, using the virtual prototype technology, the design of parts are completion of assembly in the Creo, and add the required connection type and the constrained motion for simulation, the use of Creo dynamic simulation module to simulate the welding process of welding robot, to verify the rationality of the design for the welding robot.The fifth chapter, according to the composition of welding robot system, design the hardware system of the motion control system.The sixth chapter summarizes the whole research work. Describes the main conclusions of the study, and put forward the research prospect.