Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Development of Stretch Forming Apparatus using Flexible Die

가변금형을 이용한 스트레치 성형장치 개발

  • 서영호 (부산대학교 항공우주공학과 대학원) ;
  • 허성찬 (부산대학교 항공우주공학과 대학원) ;
  • 박중원 (부산대학교 항공우주공학과 대학원) ;
  • 구태완 (부산대학교 항공우주공학과) ;
  • 송우진 (부산대학교 부품소재산학협력연구소) ;
  • 김정 (부산대학교 항공우주공학과) ;
  • 강범수 (부산대학교 항공우주공학과)
  • Published : 2010.02.01
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Abstract

A stretch forming method has been widely used in sheet metal forming process. Especially, this process has been adopted in aircraft and high-speed train industries for skin structure forming having a variety of curvature. Until now, solid dies, which are designed with respect to the specific shapes and manufactured as a single piece, have been usually applied to stretch forming process. Therefore, a great number of solid dies has to be developed according to the shapes of the curved skin structure. Accordingly, a flexible die is proposed in this study. It replaces the conventional solid dies with a set of height adjustable punch array. A usefulness of the flexible die is verified through a formability comparison with the solid die using finite element method considering an elastic recovery and the stretch forming apparatus with the flexible die is developed.

Keywords

References

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  2. Design of Flexible Die Punch and Control System for Three-dimensional Curved Forming Surface vol.20, pp.3, 2011, https://doi.org/10.5228/KSTP.2011.20.3.206
  3. Numerical and experimental study of stretching effect on flexible forming technology vol.73, pp.9-12, 2014, https://doi.org/10.1007/s00170-014-5859-7
  4. Tool fabrication for composite forming of aircraft winglet using multi-point dieless forming vol.30, pp.5, 2016, https://doi.org/10.1007/s12206-016-0428-7
  5. Numerical and Experimental Study for Improvement of Formability in Flexible Forming Process vol.21, pp.7, 2012, https://doi.org/10.5228/KSTP.2012.21.7.432
  6. Study on multiple die stretch forming for curved surface of sheet metal vol.15, pp.11, 2014, https://doi.org/10.1007/s12541-014-0610-8
  7. Manufacture of Architectural Skin-structure with a Double Curved Surface Using Flexible Stretch Forming vol.22, pp.4, 2013, https://doi.org/10.5228/KSTP.2013.22.4.196