铝合金全框门外板的回弹分析与补偿  

Springback analysis and compensation on aluminum alloy door outer pannel with full frame

作　　者：王强[1] 周卫国 伍二 付家焱 Wang Qiang;Zhou Weiguo;Wu Er;Fu Jiayan(Dongfeng M-Hero Co.,Ltd.,Wuhan 430056,China)

机构地区：[1]东风汽车集团股份有限公司猛士汽车科技公司,湖北武汉430056

出　　处：《锻压技术》2024年第5期67-75,共9页Forging & Stamping Technology

摘　　要：以某车型铝合金全框门外板为例,通过对比Autoform软件中自带的free springback、仅1个支撑夹紧点的Constrained springback以及现场零件的真实回弹结果,寻求最佳回弹分析及补偿方案。前期同步工程阶段,确定了影响回弹因素的构成及重点工序,对OP20拉延工序工艺片体进行补充,OP50翻边工序采用夹料翻边机构改善回弹趋势,并使用仅1个支撑夹紧点的Constrained springback对软件自带的free springback进行可靠性验证,同时对检具测量姿态下和车身装配姿态下的回弹趋势进行了校核。实际调试阶段,对比了前期CAE仿真结果,通过减少压应力、增加刚性、A面补偿等措施,控制压料面上的回弹,减少后序符型问题,确保回弹控制在一定范围内。最后,通过门内板分总成的反向矫形,促使门总成达到精度要求。For the aluminum alloy door outer panel with full frame of a certain vehicle model,the optimal springback analysis and compensation scheme were sought by comparing the built-in free springback in software Autoform,Constrained springback with only one support clamping point,and the actual springback results of the parts on site.Then,during the early synchronous engineering phase,the combination of factors affecting springback and the critical processes were identified,and the process sheet for the OP20 drawing process was supplemented.Furthermore,the springback trend in the OP50 flanging process adept by a clamping flanging mechanism was improved,and the reliability of the built-in free springback in the software was verified by Constrained springback with only one support clamping point.Finally,the springback trend under the measuring posture of measuring devices and the assembly posture of vehicle body was checked.The results of the actual debugging phase show that compared with the previous CAE simulation results,through reducing compressive stress,increasing rigidity and A-face compensation,the springback on the pressurized surface is controlled,and the problem of post-order pattern is reduced to ensure that the springback is controlled within an acceptable range.Thus,the accuracy requirements of the door assembly are achieved by the reverse correction of the door inner panel sub assembly.

关 键 词：全框门外板 铝合金 回弹 夹料翻边 包边回弹 

分 类 号：TG386[金属学及工艺—金属压力加工]