›› 2012, Vol. ›› Issue (06): 1448-1452.

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Compensation algorithm for springback in multi-point forming and its validation

ZHANG Qing-fang, CAI Zhong-yi, LI Ming-zhe, ZHANG Yan   

  1. Dieless Forming Technology Research Center, Jilin University, Changchun 130022, China
  • Received:2012-01-10 Online:2012-11-01

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Abstract: An algorithm was established for springback compensation and modification in multi-point forming (MPF) by combination of theoretical analysis, numerical simulation and forming experiment. A calculation formula for the curvature before springback was derived based on the elasticpower hardening model of the material. Using the cubic B-sphine fitting method, a springback compensation method to correct the die surface was proposed. On the basis of calculation results of die surface information, numerical simulations and forming experiments were done for MPF process. The results showed that the compensation algorithm can effectively control error caused by springback for single-curvature surface in MPF.

Key words: material synthesis and processing technology, sheet metal forming, compensation algorithm for springback, cubic B-spline fitting

CLC Number: 

  • TG302
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