基于小波变换闭环控制的时效成形回弹补偿

Age forming springback compensation using wavelet transform based closed loop control

时效成形零件回弹较大且不易控制,为提高成形精度,文章提出了基于小波变换的回弹补偿方法,并详细阐述该算法的原理及其实现。将该方法应用于复杂壁板零件进行仿真迭代补偿,其偏差均在0.48mm以内,满足零件设计要求。采用"双井字"实验零件对方法进行验证,最大偏差为0.484mm,满足工程应用要求,证明提出的基于小波的补偿算法对于时效成形模具型面补偿可行。

Considering the fact that spring back of age forming parts is large and difficult to be controlled, this paper proposes acompensation method based on wavelet transform and explains the principle of the algorithm and its implementation in detail. Thismethod is applied in the simulation of complex integral panel parts iterative compensation and the deviation is within 0.48 mm,meeting the design requirements of parts. Finally, the spingback compensations of parts with the ribs in the form of ＂Double well＂are carried out two times and then compared with the experiment results. It is concluded that the maximum deviation is 0. 484mm,and the proposed compensation algorithm based on wavelet transform for age forming springback compensation is feasible.