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汽车前梁后部零件全工序成形回弹仿真及模面补偿研究
英文标题:Research on whole process forming springback simulation and die surface compensation for rear part of automobile front member
作者:段磊 夏磊 李庆宝 白帆 张洋 
单位:天津职业技术师范大学 天津众诚楷模科技有限公司 
关键词:高强钢板 全工序 回弹预测 模面补偿 拉延 
分类号:TG386
出版年,卷(期):页码:2020,45(8):62-69
摘要:
高强钢板作为汽车用钢的主要材料,在冲压成形过程中易出现破裂、起皱和回弹等缺陷。以宝钢CR380LA高强钢板汽车前梁后部零件为研究对象,分析了零件的材料和结构特点,确定了零件的冲压工艺方案为落料拉延修边、侧冲孔、翻边整形、侧整形;利用Autoform软件,研究了零件的全工序成形回弹仿真,并预测了零件成形后的回弹量;根据回弹预测结果,采用折入补偿设计策略对零件两侧壁的拉延模面进行了回弹几何补偿。模面补偿后的回弹模拟及实际生产检测结果表明,零件的回弹减小了80%,且得到了有效地控制。零件的全工序成形回弹仿真及模面补偿是正确合理的,保证了零件的成形质量和尺寸精度,为同类零件的成形工艺设计和回弹模面补偿提供了有益的指导。
As the main material of automobile steel, the high strength steel plate is prone to crack, wrinkle and springback in the process of stamping. For an automobile front member rear part of CR380LA high strength steel plate produced by Baosteel, the materials and structural characteristics of parts were analyzed, and the stamping process scheme was determined as blanking, drawing, trimming+side piercing+flanging, shaping+side shaping. Then, the simulation of springback in the whole process of parts was studied by software Autoform, and the springback after part forming was predicted. According to the springback prediction results, the springback geometric compensation of drawing die surface on both side walls of part was achieved by the fold-in compensation design strategy. The results of simulation for springback after the die surface compensation and the actual production test show that the springback of part is decreased by 80% and controlled effectively, and the simulation of springback in the whole process and the die surface compensation of part are correct and reasonable to guarantee the forming quality and the dimension precision of part, which provides useful guidance for the forming process design and the die surface compensation of springback for the similar parts.
基金项目:
天津市津南区科技计划项目(201805002);天津市教育委员会优秀青年教师资助计划项目(RC14-16);天津职业技术师范大学科研发展基金项目(KJ15-01);天津市大学生创新创业训练计划资助项目(202010066076)
作者简介:
段磊(1980-),男,硕士,副教授,E-mail:tutedl213@tute.edu.cn;通讯作者:夏磊(1996-),男,本科生,E-mail:x2019zc@163.com
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