Deformation mode is adjusted according to forming limit diagram (FLD) and maximum springback error, so the optimized one can be found, which in turn optimizes the stretch bending trajectory.

根据成形极限图和规定最大回弹超差量来调整变形模式，找到优化的变形模式和拉弯轨迹。

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Part shape error due to springback is one of most important manufacturing defect in sheet metal stamping process.

回弹是金属板料冲压中的主要缺陷之一，它可以通过修正模具形状加以解决。

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Springback often causes the geometric error when die design is based on the part shape required.

拉延件回弹常常会造成最终零件的几何偏差，以至于需要对模具进行修改。

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