基于回弹补偿的模具型面修正方向

在分析基于回弹补偿的模面几何位移修正法中不同补偿方向对结果影响的基础上,提出了一种新的考虑方向补偿因子的模面综合补偿修正方法。以V形弯曲件和复杂叶片为研究对象,对位移修正法中不同补偿方向的结果进行了有限元仿真对比验证,并以U形工件为例进行了实验验证。结果表明:本文方法以回弹前后工件的法向夹角对连线方向补偿进行了修正并引入了方向补偿因子,更符合实际的模面补偿修正方向,适应性广,且补偿结果的精度比其他方法高。

Compensation direction for die-face adjustment based on springback compensation

Based on the anelysis of the effect of different compensation directions on the result in the die-face geometric displacement correction method to compensate the springback,a new comprehensive compensation and correction method of the die-face was proposed taking a direction compensation factor into account.Taking a V-shape bending pand and a complex blade as examples,the different compensation directions in the displacement correction method were compared using the finite element simulation,and a U-shape panel was used to verify the effectiveness of the new method experimentally.The results show that in the new method,the correction direction was compensated by the difference of the normal directions before and after the springback,and a direction compensation factor was introduced.The new method is more accurate and more universal than the other methods.