关键词: 车身车间；固定焊枪；异步修磨；摆臂修磨器；设备开动率

Abstract: Automotive automatic welding production line, the welding gun need to be tip dressed after welding a certain amount of points, which will affect the actual output of the production line. Especially the stationary welding gun with swing arm tip dresser has a greater impact. This paper introduces the current situation of stationary gun with swing arm tip dressing, and analyzes the time sequence of the grinding process. For the application of handling robots with stationary welding gun, when the robot is carrying out the handling work, the welding gun as an independent axis of separate movement can achieve the tip dressing. After the completion of the weld, the foreground program to determine whether it is necessary to tip dress. If it is necessary, then turn on the asynchronous mode and trigger the background dressing procedure to start. The background program can control the welding gun as an independent axis and the swing arm tip dresser to achieve the dressing process following the time sequences. Before welding starts, the foreground program turns off the asynchronous mode to restore the linkage of the welding gun. By implementing the asynchronous tip dressing function in a production line and comparing the average hourly output of a single shift before and after the implementation, it is found that the output of the production line has been improved obviously after the implementation.

Key words: Body shop; Stationary welding gun; Asynchronous tip dressing; Swing arm tip dresser; Overall equipment effectiveness