소성∙가공 (Transactions of Materials Processing)

  • 제27권4호
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  • Pages.236-243
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  • 2018
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  • 1225-696X(pISSN)
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  • 2287-6359(eISSN)
한국소성∙가공학회 (The Korean Society for Technology of Plasticity and materials processing)
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수치해석을 이용한 열간 가변금형 성형특성 평가

Numerical Study on Forming Characteristics of Hot Multi-Point Forming Die

  • 이인규 (한국생산기술연구원 극한가공기술그룹) ;
  • 이성윤 (한국생산기술연구원 극한가공기술그룹) ;
  • 정명식 (한국생산기술연구원 극한가공기술그룹) ;
  • 김병민 (부산대학교 기계공학부) ;
  • 이상곤
  • 투고 : 2018.04.17
  • 심사 : 2018.07.12
  • 발행 : 2018.08.01
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초록

A multi-point forming die (MPFD), which has been used for producing curved plates, is capable of forming various curved plates with just one MPFD. However, in real industries, an MPFD is difficult to be adopted since the structural properties, punch strength, elastic recovery correction and dimensional accuracy become problems. In order to overcome these problems, the hot multi-point forming die (HMPFD) was proposed in this study. This HMPFD commonly provide more less spring-back and forming load than conventional MPFD. Nevertheless, this process is very difficult to form the curved plate, because the final curved shape of the plate depends on many process variables such as the punch/nozzle arrangement (height and distance), the radius of punch, contact conditions between plate and punch. In this study, the forming characteristics of HMPFD and conventional MPFD are compared with each other through the finite element analysis.

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참고문헌

  1. D. F. Walczyk, D. E. Hardt, 1998, Design and Analysis of Reconfigurable Discrete Dies for Sheet Metal Forming, J. Manuf. Syst., Vol. 17, No. 6, pp. 436-454. https://doi.org/10.1016/S0278-6125(99)80003-X
  2. H. A. Ameen, H. A. Alsabti, 2016, Finite Element Analysis of the Dish Multi-Point Forming Process, Int. J. Eng. Res. Technol., Vol. 5, Issue. 07, pp. 286-295.
  3. Z. R. Wang, S. J. Yuan, 2006, New forming technologies used in manufacturing large vessels, Int. J. Mach. Tools Manuf., Vol. 46, pp. 1180-1187. https://doi.org/10.1016/j.ijmachtools.2006.01.022
  4. M. Li, Y. Liu, S. Su, G. Li, 1999, Multi-point forming: a flexible manufacturing method for a 3-d surface sheet, J. Mater. Process. Technol., Vol. 87, pp. 277-288. https://doi.org/10.1016/S0924-0136(98)00364-1
  5. S. C. Heo, T. W. Ku, W. J. Song, J. Kim, B. S. Kang, 2010, Study of Flexible Forming Process Involving the Use of Sectional Flexible Die for Sheet Material, Trans. Kor. Soc. Mech. Eng., Vol. 34, No. 3, pp. 299-305. https://doi.org/10.3795/KSME-A.2010.34.3.299
  6. Y. H. Seo, S. C. Heo, T. W. Ku, J. Kim, B. S. Kang, 2011, Design of Flexible Die Punch and Control System for Three-dimensional Curved forming Surface, Trans. Mater. Process., Vol. 20, No. 3, pp. 206-213. https://doi.org/10.5228/KSTP.2011.20.3.206
  7. J. S. Yoon, J. H. Lee, C. H. Ryu, S. H. Hwang, H. B. Lee, 2008, Application of IDA Method for Hull Plate Forming by Multi-Point Press Forming, Kor. Soc. Ocean Eng., Vol. 22, No. 6, pp. 75-82.
  8. S. Y. Hwang, J. H. Lee, Y. S. Yang, M. J. Yoo, 2010, Springback adjustment for multi-point forming of thick plates in shipbuilding, Comput. Aided Design, Vol. 42, pp. 1001-1012. https://doi.org/10.1016/j.cad.2010.01.005
  9. Q. F. Zhang, Z. Y. Cai, Y. Z. Zhang, M. Z. Li, 2013, Springback compensation method for doubly curved plate in multi-point forming, Mater. Des., Vol. 47, pp. 377-385. https://doi.org/10.1016/j.matdes.2012.12.005
  10. Q. Zhang, Z. R. Wang, T. A. Dean, 2008, The mechanics of multi-point sandwich forming, Int. J. Mach. Tools Manuf., Vol. 48, pp. 1495-1503. https://doi.org/10.1016/j.ijmachtools.2008.04.003
  11. Q. Liu, C. Lu, W. Fu, K. Tieu, M. Li, X. Gong, 2012, Optimization of cushion conditions in micro multipoint sheet forming, J. Mater. Process. Technol., Vol. 212, pp. 672-677. https://doi.org/10.1016/j.jmatprotec.2011.07.015
  12. F. X. Tan, M. Z. Li, Z. Y. Cai, 2007, Research on the process of multi-point forming for the customized titanium alloy cranial prosthesis, J. Mater. Process. Technol., Vol. 187, pp. 453-457.
  13. S. C. Heo, Y. H. Seo, H. G. Noh, T. W. Ku, B. S. Kang, 2010, Numerical Study on Effect of Using Elastic Pads in Flexible Forming Process. Trans. Kor. Soc. Mech. Eng., Vol. 34, No. 5, pp. 549-556. https://doi.org/10.3795/KSME-A.2010.34.5.549
  14. Y. V. R. K. Prasad, S. Sasidhara, 1997, Hot Working Guide, 1st ed., The materials Information Society, USA, pp. 101-103.
  15. D. H. Ko, S. K. Lee, Y. N. Kwon, S. W. Kim, H. S. Lee, E. S. Park, B. M. Kim, D. C. Ko, 2011, Roll Die Forming Process for Manufacturing Clutch Hub in Automotive Transmission, Trans. Mater. Process., Vol. 20, No. 2, 154-159. https://doi.org/10.5228/KSTP.2011.20.2.154
  16. J. M. Lee, I. K, Lee, D. S. Kim, I. K. kwon, S. B. Lee, B. M. Kim, 2012, FE-Analysis of Hot Forming of Al Large Thick Plate for Spherical LNG Tank Considering Cooling Performance of Grid-Typed Die, Kor. Soc. Precis. Eng., Vol. 29, No. 11, pp. 1190-1198. https://doi.org/10.7736/KSPE.2012.29.11.1190
  17. J. Lee, J. Pan, 2016, Closed-form analytical solutions for calculation of loads and contact pressure for roller and ball bearings, Tribol. Int., Vol. 103, pp. 187-196. https://doi.org/10.1016/j.triboint.2016.06.042