摘要
针对高强钢梁类件冲压成形时的回弹控制难题,研究了弱化反弹力矩的关键工艺措施。通过分析高强板回弹的力学机理,揭示了上下表层应力分布不均匀与反弹力矩的内在关联,提出了可调式到底锁止筋的创新工艺措施。经研究表明,通过采用可调式的到底锁止筋结构,能有效减小压料翻边侧壁翘曲的应力差弱化反弹力矩问题,从而解决侧壁凹陷及翘曲问题。结合CAE模具补偿技术实现了整个产品的回弹控制精度的提升。经现场验证,该工艺措施可使高强钢板梁类件回弹偏差在±0.5mm左右,合格率从传统工艺的76%提升至95%以上。
This paper addresses the challenge of springback control in the stamping forming of high-strength steel beam components.Through systematic research,key process measures to mitigate the rebound moment are investigated.By analyzing the mechanical mechanism of springback in high-strength sheets,the intrinsic relationship between residual stress distribution and rebound moment is revealed.Innovative process techniques are proposed,including increasing the process blank holder force and introducing bottom-locking beads with a 10mm height.The study indicates:adopting a bottom-locking bead structure with adjustable pressing force can effectively enhance material flow uniformity.Combined with CAE die compensation technology,this approach achieves comprehensive improvement in springback control precision.Integrated application of these process measures reduces springback deviation in high-strength steel beam components to±0.5mm,increasing the qualification rate from 76%in traditional processes to above 95%.
作者
薛飞
刘轩
姜贺凯
Xue Fei;Liu Xuan;Jiang Hekai(Vision Tech Group Co.,Ltd.,Dongguan,Guangdong 523475,CHN)
出处
《模具制造》
2026年第1期8-11,共4页
Die & Mould Manufacture
关键词
应力差
到底锁止筋
回弹补偿
反弹力矩
stress difference
bottom-locking bead
springback compensation
rebound moment
