Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Study on Application of Flexible Die to Sheet Metal Forming Process

가변금형의 박판 성형공정 적용 연구

  • 허성찬 (부산대학교 항공우주공학과 대학원) ;
  • 서영호 (부산대학교 항공우주공학과 대학원) ;
  • 구태완 (부산대학교 항공우주공학과) ;
  • 김정 (부산대학교 항공우주공학과) ;
  • 강범수 (부산대학교 항공우주공학과)
  • Published : 2009.11.01
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Abstract

Flexible forming process for sheet material using reconfigurable die is introduced based on numerical simulation. In general, this flexible forming process using the reconfigurable die has been utilized for manufacturing of curved thick plates used for hull structures, architectural structures and so on. In this study, numerical simulation of sheet metal forming process is carried out by using flexible dies model instead of conventional matched die set. The numerical simulation and experimental verification for sheet metal forming process using a flexible forming machine that is more suitable for thick plate forming process are carried out to confirm the appropriateness of the simulation process. As an elastic cushion, urethane pads are utilized using hyperelastic material model in the simulation for smoothing the forming surface which is discrete due to characteristics of the flexile die. In the flexible forming process for sheet metal, effect of a blank holder is also investigated according to blank holding methods. Formability in view of occurrence of dimples is compared with regard to the various punch sizes. Consequently, it is confirmed that the flexible forming for sheet material using urethane pad has enough capability and feasibility for manufacturing of smoothly curved surface instead of conventional die forming method.

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References

  1. K. A. Pasch, 1981, Design of a Discrete Die Surface for Sheet Metal Forming, S.B. Thesis, Department of Mechanical Engineering, Massachusetts Institute of Technology
  2. M. Z. Li, Y. H. Liu, S. Z. Su, G. Q. Li, 1999, Multipoint Forming: a Flexible Manufacturing Method for a 3-D Surface Sheet, J. Mater. Process. Technol., Vol. 87, Issues 1-3, pp. 277-280 https://doi.org/10.1016/S0924-0136(98)00364-1
  3. M. Z. Li, Z. Y. Cai, Z. Sui Q. G. Yan, 2002, Multipoint Forming Technology for Sheet Metal, J. Mater. Process. Technol., Vol. 129, pp. 333-338 https://doi.org/10.1016/S0924-0136(02)00685-4
  4. Q. Zhang, T. A. Dean Z. R. Wang, 2006, Numerical Simulation of Deformation in Multi-point Sandwich Forming, Int. J. Mach. Tools Manuf., Vol. 46, pp. 699-707 https://doi.org/10.1016/j.ijmachtools.2005.07.034
  5. S. C. Heo, Y. H. Seo, J. W. Park, T. W. Ku, J. Kim, B. S. Kang, 2008, Numerical and Experimental Study on Plate Forming Process using Flexible Die, Trans. Mater. Process., Vol. 17, No.8, pp. 570-578 https://doi.org/10.5228/KSPP.2008.17.8.570
  6. K. U. Odumodu, D. Shuvra, 1996, Forceless Forming with Laser. In: Advanced Materials: Development, Characterization Processing, and Mechanical Behavior, Proceedings of the 1996 ASME International Mechanical Engineering Congress and Exposition, Atlanta, GA, USA., New York, pp. 169-170
  7. H. C. Kuo, L. J. Wu, 2002, Automation of Heat Bending in Shipbuilding, Comput. Ind., Vol. 48, Issue 2, pp. 127-142 https://doi.org/10.1016/S0166-3615(02)00013-1
  8. D. E. Ko, C. D. Jang, S. I. Seo, H. W. Lee, 1999, Realtime Simulation of Deformation due to Line Heating for Automatic Hull Forming System, J. Soc. Naval Archit. Korea, Vol. 36, No. 4, pp. 116-127
  9. Y. S. Ha, C. D. Jang, 2004, The Effectiveness of Weaving Motion and Determination of Optimal Heating Condition in Line-heating, J. Soc. Naval Archit. Korea, Vol. 41, No. 4, pp. 68-76 https://doi.org/10.3744/SNAK.2004.41.4.068
  10. M. Z. Li, Z. Y. Cai C. G. Liu, 2007, Flexible Manufacturing of Sheet Metal Parts based on Digitized-die, Rob. Comput. Integr. Manuf., Vol. 23, pp. 107-115 https://doi.org/10.1016/j.rcim.2005.09.005

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