Research Of Robot Welding For Railway Wagon Top

With the development of the current science and technology, robot welding has not been a dream any more, robot welding has been applied to many fields home and abroad. Robot welding has been just used to try in the filed of railway wagon production. The text mainly disserted the processing research work in the aspects of the top welding with robot in Qiqihar Rolling Stock (Group) Co., Ltd. The project is a technical renovation item of railway ministry with special capital supplied and also one of main projects of technical renovation in railway ministry with setting the plot and founding produce line. The application research begins with the current condition of railway wagons top at first, the manufacture of the wagons top is analyzed. As for the basic production situation, it is fully analyzed from the production processing , the technology process and production technology plan are drafted. Finally robot welding system is determined alternatively as per the structural features of top, applying circumstance of robot welding system, etc. At present, manual electric arc welding and manual melting pole shielded arc welding are adopted for top of railway wagons with the features of low efficiency, inferior quality and high physical strength. In order to improve the production efficiency and welding quality and decrease physical strength, the production process is reanalyzed and determined, the new technology process is tried to use in welding top with welding robot. Assembly dimensions and precision of all parts need high requirements with robot welding. Therefore, when determining the production process of robot welding, the adjustment should be done for the dimensions of key components and main location dimensions precision of top, assembly jig and rotation shifter for top assembly need to be designed again. During the system determination of welding robot for top, in terms of features long and big top, large working capacity, deflction of top, large side bending, and application scope including welding scope of welding robot, type of wire feeder, sensor needed in welding tracing, etc, reasonable complete robot welding system is determined through reasonable choices.