车身覆盖件的三维激光切割转角过烧的研究  

The research on process of three dimensional laser cutting about body panels

作　　者：陈根余[1,2] 刘旭飞[1] 梅丽芳[1] 赵智[1] 黄丰杰[1] 

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

出　　处：《激光杂志》2009年第4期62-63,共2页Laser Journal

基　　金：国家高技术研究发展专项经费(863重点课题)资助:编号2007AA042006

摘　　要：本文论述了三维激光切割技术在车身制造中的应用,探讨了三维激光切割中的难点。采用CO2激光在三维五轴数控切割机床上对车身覆盖件进行了切割工艺试验,对入射角和激光型式进行了深入的研究,并分析了对切割质量的影响。试验结果表明,入射角在临界角度内,对切缝宽度、切割面粗糙度和切割面波纹的影响不大,但超过这个临界角度,切割质量很差;在切割转角处时,应尽可能采用脉冲激光进行切割,避免转角处因热量过于集中而产生过烧,从而获得较好的切割质量。The technology of Three Dimensional laser cutting applied in car body manufacturing is discussed in this paper. The difficulties which generated in the process are estimated. Procedure experiments of car body components are carried out on 3D laser cutting machine tool, in which CO2 laser is employed. The research is focused on two procedure parameters： incident angle and laser type, then the influence on cutting quality is revealed. The test results show that, the incident angle within the critical angle have a little impact on the kerr width, cutting surface roughness and cutting surface striation, without the critical angle, the poor quality of the cutting will be got; Pulsed laser should be adopted to cut the comer as far as possible, to avoid burn - off in comer because of the over - concentrated heat, then the good quality of the cutting will be obtained.

关 键 词：车身覆盖件 三维激光切割 入射角 过烧 

分 类 号：TN248.1[电子电信—物理电子学]