Design and analysis of cell for automotive body in white laser welding production line
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摘要: 为了将激光焊接技术用于汽车白车身焊接生产线,采用自动控制技术、通信技术与激光焊接技术相结合的方法,提出了以可编程逻辑控制器为控制核心,工业计算机为辅助控制核心,实时与光纤激光器、焊接机器人通信的激光焊接生产线。并通过改变控制焊接参量,焊接某车型左前门零部件,与点焊焊接进行了分析。结果表明,激光焊接生产线焊接速度明显提高、控制灵活、焊接强度提高了70%。这为我国汽车的小型化、轻量化的发展,以及车身结构的综合力学性能的提高,提供了一种新的焊接生产线技术。Abstract: In order to adopt laser-welding technology in automotive body in white(BIW) welding production line, combining automatic control technology, communication technology with laser-welding technology, an automotive BIM laser welding production line was designed with programmable logic controller and industrial computer as the control core and assisted control core respectively, which could communicate with the fiber laser and the welding robot in real-time. By changing the welding parameters，the laser-welding results of left front door parts of a vehicle were compared with those of spot welding. The results show that: laser welding has several advantages of obviously improved welding speed, flexible control and higher welding strength increased by 70%. This provides a new welding production line technology for the development of miniaturization, lightweight Chinese automobiles with stronger comprehensive mechanical property in their bodies
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Keywords:
- laser technique /
- laser welding /
- production line /
- body in white /
- control
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