机车底架框架自动焊系统研究

Research of automatic welding system for locomotive underframe frame

文章基于典型机车底架框架的结构特点,结合自动焊工艺布局,从编程难度、设备整体刚性、设备故障率等方面综合考虑,确定了机车底架框架自动焊系统的工艺布局和设备配置,采用6台机械手同时焊接底架框架,并设计框架承载式底架升降转胎。采用离线仿真技术,对某型机车底架框架焊缝进行了焊接可达性分析,识别了焊接不可达位置,为底架框架自动焊的现场应用奠定了基础。该自动焊系统投产后,机车车体自动焊率将从57%提升至63%。

Based on the structural characteristics of typical locomotive underframe frame,combined with the layout of automatic welding process,this paper determines the process layout and equipment configuration of automatic welding system for locomotive underframe frame from the the aspects of programming difficulty,overall rigidity of equipment and equipment failure rate.In the manufacture of locomotive,six robots are used to weld the underframe frame at the same time,and the frame-bearing underframe lifting rotor is designed.The off-line simulation technology is used to analyze the welding accessibility of the welding seam of a locomotive underframe frame,and the welding inaccessible position is identified,which lays the foundation for the application of automatic welding of underframe frame.After the automatic welding system goes into operation,the automatic welding rate of car body would be increased from 57% to 63%.