汽车白车身激光焊接生产线单元设计及分析  

Design and analysis of cell for automotive body in white laser welding production line

作　　者：陈根余[1,2] 陈建明[1,2] 梅丽芳[3] 王祖建[3] 

机构地区：[1]湖南大学汽车车身先进设计制造国家重点实验室,长沙410082 [2]湖南大学 激光研究所,长沙410082 [3]湖南大学激光研究所,长沙410082

出　　处：《激光技术》2011年第1期7-10,共4页Laser Technology

基　　金：国家八六三高技术研究发展计划资助项目(2007AA042006);湖南大学汽车车身先进设计制造国家重点实验室自主研究课题资助项目(60870004);教育部长江学者与创新团队发展计划资助项目(531105050037)

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。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 lu-,＇,-~,＇hling results of left front door parts of a vehicle were compared with those of spot welding. The results show that： la〉,.r 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.

关 键 词：激光技术 激光焊接 生产线 白车身 控制 

分 类 号：TP278[自动化与计算机技术—检测技术与自动化装置] TP273[自动化与计算机技术—控制科学与工程]