Abstract
Use accurate springback evaluation method to guide modifying die surfaces, that is the first pledge to rectify the springback of sheet metal stamping by mould compensation method. Aiming at the problems in springback evaluation of complex sheet metal stamping and to improve the simulation precision of finite element, presented the face-to-face selection methods to select reference points evaluating springback, then used this method on the spiral blades reference points selecting and springback evaluation. Result shows that this method can determine the range of reference points evaluating springback rapidly and get a comparatively accurate result of springback evaluation.
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