Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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A Study on Improvement of Bending Quality of Hemmed Plates in Sheet Metal Forming

헤밍 (Hemming) 구조를 가진 박판의 굽힘품질 개선에 관한 연구

  • Kim, Pan Gun (Graduate School of Mechanical Engineering, Pusan National Univ.) ;
  • Park, Sang Hu (School of Mechanical Engineering, ERC/NSDM, Pusan National Univ.)
  • 김판근 (부산대학교 기계공학부 대학원) ;
  • 박상후 (부산대학교 기계공학부/정밀정형 및 금형가공연구소)
  • Received : 2012.03.16
  • Accepted : 2012.10.04
  • Published : 2012.12.01
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Abstract

A bending process is considered as one of fundamental sheet metal forming processes, and it is widely used for fabrication of simple or complicated sheet metal products in industrial fields. Most of automobiles and electronics have many parts made by the bending process inside or outside of them. However, till now, there is few research reports on the bending process of hemmed plates. A hemmed plate has a locally different bending strength, so a waving shape occurs after bending. A poor outlook due to local uneven shape influences greatly on product competitiveness. To settle this problem, we studied the bending parameters of a hemmed plate and showed the major sensitive design-parameters on the bending quality.

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References

  1. Ho, K. I. and Chang, Y. S., "A Study on the Sheet Bending by the Plastic Deformation of Flange," Trans. of KSME A, Vol. 21, No. 7, pp. 1050-1057, 1997.
  2. Lee, S. Q. and Yang, D. Y., "An Assessment Numerical Parameters Influencing Springback in Explicit Finite Element Analysis of Sheet Metal Forming Process," J. Mater. Process. Technol., Vol. 80-81, pp. 60-67, 1998. https://doi.org/10.1016/S0924-0136(98)00177-0
  3. Chandra, A., "Real-time Identification and Control of Springback in Sheet Metal Forming," ASME J. of Eng. for Industry, Vol. 109, pp. 265-273, 1987. https://doi.org/10.1115/1.3187128
  4. Won, S. T. and Lim, K. H., "A Study on the Mechanical Properties and Bending Formability Evaluation of the Spring Strip Materials," Trans. of Mater. Proc., Vol. 15, No. 9, pp. 660-666, 2006.
  5. Gupta, S. K. and Rajagopal, D., "Sheet Metal Bending: Forming Part Families for Generating Shared Press-Brake Setups," J. of Manuf. Syst., Vol. 21, pp. 329-350, 2002. https://doi.org/10.1016/S0278-6125(02)80033-4
  6. Han, S. S., "Influence of Frictional Behavior Depending on Contact Pressure on Springback at U Draw Bending," Trans. of Mater. Proc., Vol. 20, No. 5, pp. 344-349, 2011. https://doi.org/10.5228/KSTP.2011.20.5.344
  7. Kwon, Y., "A Closed Form Nonlinear Solution for Large Pure Bending Deformation of Solid Plate," J. of the KSPE, Vol. 15, No. 12, pp. 220-225, 1998.
  8. Kim, B. G., Lee, I. S., and Keum, Y. T., "Study on the Springback Reduction of Automotive Advanced High Strength Steel Panel," Trans. of Mater. Proc., Vol. 18, No. 6, pp. 488-493, 2009. https://doi.org/10.5228/KSPP.2009.18.6.488
  9. Lee, S. B., Kim, D. H., and Kim, B. M., "Hemming Process Design of the Permalloy Shielding Can for the Stiffness and Shape Accuracy," J. of the KSPE, Vol. 19, No. 5, pp. 29-35, 2002.
  10. Kim, H. J., Choi, W. M., Lim, J. K., Park, C. D., Lee, W. H., and Kim, H. Y., "A Parametric Study of the Hemming Process by Finite Element Analysis," Trans. of KSME A, Vol. 28, No. 2, pp. 149-157, 2004. https://doi.org/10.3795/KSME-A.2004.28.2.149
  11. Johnson, W. and Mellor, P. B., "Engineering Plasticity," Ellis Horwood, 1983.

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