• Title/Summary/Keyword: 블랭크호울더 곡면

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Efficient modeling of die-face shapes for stamping automobile outer panels (차체 판넬의 가공 제작을 위한 금형형상의 효율적 모델링)

  • 박종천;이건우;전기찬
    • Journal of the korean Society of Automotive Engineers
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    • v.15 no.3
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    • pp.96-110
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    • 1993
  • A procedure has been developed so that a die-face for stamping automobile outer panels can be design and modelled efficiently. The procedure is composed of four parts each of which corresponds to modeling major components of a die-face, i.e. tipped product, blankholder, draw beads, and step draw. The modeling techniques developed specifically for die-face design enable a designer to generate the shape of a die-face quickly with the minimum input, and the resulting models can be used in FEM analysis and NC tool path generation. This will lead to the reductions in lead time and manhours required for the design and manufacture of the stamping dies.

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Optimization of Product's Tipping Position in Designing Die Face for Manufacturing Automobile Outer Panels (차체 외판의 제작을 위한 다이페이스 설계에 있어서 제품 성형방향의 최적화)

  • 박종천;조경호;이건우
    • Transactions of the Korean Society of Mechanical Engineers
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    • v.17 no.6
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    • pp.1389-1403
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    • 1993
  • A procedure has be developed to optimize the product's tipping position in designing a die face for manufacturing automobile outer panels. Two design requirements are considered in optimizing the tipping position. One is to satisfy that all the points on the product should have a uniform distribution of drawing depths. The other is to guarantee that the user-specified area on the product should first contact with the binder wrap. The problem to satisfy the design requirements described above is analogous to the flatness calculation problem in the area of metrology if some constraints can be imposed. Thus the problem can be solved by the simulated annealing method, which is one of the optimization methods. The developed procedure was tested with the real die face design problem and the usefulness was verified by the diagram of the drawing depth.