记笔记

Simulation analysis of welding precision on friction stir welding robot

Haitao Luo¹Jia Fu¹Min Yu¹Changshuai Yu¹Tie Liu²Xiaofang Du³Guangming Liu⁴

1. Shenyang Institute of Automation,Chinese Academy of Sciences 2. Steelmaking Central Factory,Ansteel Corporation Co.,Ltd 3. Dalian CIMC Logistics Equipment Co.,LTD 4. Northeastern University

摘要：In this paper,a new type of friction stir welding（FSW）robot is introduced for the welding of large complex thin-walled cured surface.The welding mechanism of the FSW robot is different from the ordinary mechanical processing,which has extremely bad mechanical load at the mixing head.Insufficient stiffness of the welding equipment may have serious influence on the geometry precision of welding.Through the analysis of multibody system simulation,the ram structure,which is most sensitively affected by welding load,is equivalent to flexible body.The stiffness of joint is taken into account to set up the rigid-flexible coupling dynamic model of the whole robot,and the displacement error of spindle end face is simulated under the worst working condition（melon-disk welding condition）.A kind of effective assessment method is provided for the stiffness and welding precision of the FSW robot.

基金：

supported by the National Science Foundation of China （Grant No. 51505470）； Dr. Start-up Fund in Liaoning province （No. 20141152）；

会议名称：

2016年第二届能源设备科学与工程国际学术会议

会议时间：

2016-11-12

会议地点：

中国广东广州