DOI QR코드

DOI QR Code

A Study on the Effect of V-Ring Pressure and Clearance on the Die Roll Height Through the Fine Blanking

파인블랭킹 공정에서 V-링 압력과 클리어런스가 다이 롤 높이에 미치는 영향에 관한 연구

  • Lee, Chun-Kyu (Div. of Mechanical & Automotive Engineering, Kongju National University) ;
  • Kim, Jong-Deok (Molds and Dies Technology R & D Group, Korea Institute of Industrial Technology) ;
  • Kim, Young-Choon (Div. of Mechanical & Automotive Engineering, Kongju National University)
  • Received : 2013.08.30
  • Accepted : 2013.12.05
  • Published : 2013.12.31

Abstract

Minimizing the height of the die roll is very important for maximizing the size of effective shear planes. In this study, the die roll change was investigated for the change in the amounts and clearance of the V-ring indentation. Shear analysis and experiments were conducted with the V-ring distance fixed to 2mm. Fine blanking die was applied to the die insert with different clearances. Several specimens were analyzed about the height of the die roll. As a result, the pressure of V-ring effectively inhibited the flow of materials. And the height of the die roll was lowest when the clearance between the die and punch was 1% of the material thickness.

Keywords

Clearance;Die Roll;Effective Share Surface;Fine Blanking;V-ring Force

References

  1. Taylan Altan, "Metal Forming Handbook", Springer-Verlag pp. 330-365, 1998.
  2. Jong-Deok Kim, "An experimental study on the effect of V-ring position and die chamfer shape on the die roll height in fine blanking tool" Journal of the Korea Academia-Industrial, cooperation Society, Vol. 13, No. 5, pp. 2009-2014, 2012 DOI: http://dx.doi.org/10.5762/KAIS.2012.13.5.2009 https://doi.org/10.5762/KAIS.2012.13.5.2009
  3. W. Blatter, "Introduction into the technology fine blanking tools", KAITECH, pp. 8-82, 1991.
  4. Chun-Kyu Lee, "A study on the effect of factor in the fine blanking process for sheared surface", Seoul National University Graduate School of, Mechanical Engineering , pp.33-34, 2008.
  5. Yun-Joo Kim, Tae-Soo Kwak, Won-Byong Bae, "Effect of V-Ring Indenter on the Sheared Surface in the Fine Blanking Process of a Pawl" Journal of the Korea Society of Precision Engineering, Vol. 17, No. 9, 2000
  6. Jong-Ku Lee, "Study Fine Blanking deformation behavior of the shear zone", Dankook University Graduate School of, Department of Mechanical Engineering, pp01-45. 1990.
  7. Yun-Joo Kim, Tae-Soo Kwak, Won-Byong Bae, "A Study on the Effect of Vee-ring Indentor on Shear Planes in Fine Blanking Process by Rigid- Plastic Finite Element Method" Journal of the Korea Society of Precision Engineering, pp1031-1035. 1999