工艺方案对高强平板冲压件回弹及补偿的影响

Influence of process scheme on springback and compensation for high strength flat stamping part

为解决高强度平板冲压件回弹问题严重以及模拟过程中回弹和回弹补偿不稳定等问题,以某汽车电池盒盖板为研究对象,通过对该零件的全工序回弹进行分析,探究了导致其回弹补偿不稳定的因素及影响规律,对比分析了5种工艺方案并确定了控制该零件回弹的最优方案。冲压实验验证表明:对于高强度平板冲压件,若采用落料成形方案,通过工艺优化的方法无法控制其回弹,且回弹不稳定,工艺稍有改动便会造成回弹趋势的改变;但采用拉延-修边冲孔-翻边翻孔的拉延成形方案,回弹稳定且合格。本研究方法及研究思路对类似零件的生产具有指导意义。

In order to solve the serious springback problem of high-strength flat stamping parts and the instability of springback and spri-ngback compensation during the simulation process,for a certain automotive battery box cover plate,through the full process springback analysis of the part,the factors that affected the instability of springback compensation and their influencing laws were explored,and af-ter comparative analysis of five process plans,the optimal plan for controlling the springback of part was determined.Then,the stam-ping experiments verification shows that for high-strength flat stamping parts,if a blanking forming scheme is used,the springback can-not be controlled through the process optimization methods,and the springback is unstable.A slight change in the process causes a change in the springback trend.However,a drawing forming solution of drawing drawing-trimming and punching-flanging is adopted,the springback is stable and qualified.The research method and research ideas have guiding significance for the production of similar parts.