Design & Manufacturing

Korean Society of Die & Mold Engineering (한국금형공학회)
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A Study on the Deformation Characteristics of Blanking Mold by the Change of Punch Shear Angle

블랭킹 금형의 펀치 전단 각 변화에 따른 변형 특성 연구

  • Received : 2023.02.05
  • Accepted : 2023.03.31
  • Published : 2023.03.31
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Abstract

Blanking processing is one of the shear processing method in which the cut part becomes a product and piercing processing is a press molding process in which the cut part is discarded as a scrap. The shear angle of the punch used for blanking is determined by conditions such as the characteristics of the shear material, shear thickness and shear length. The shear angle of a punch is an important factor in determining the size of the shear load, the life of the shear punch, the deformation of the shear product and the quality of burrs In this study, blanking punches applied with four types of shear angles (i.e., 0°, 0°23", 0°46", 0°69") to the blanking punches of bracket products used in practical work were manufactured and tested. In the blanking experiment, the remaining variables except for the shear angle were the same. Experiments show that the product has the least amount of deformation in blanking punches with a shear angle equal to the material thickness, i.e., 0°46"..

Keywords

Acknowledgement

본 연구는 2022학년도 유한대학교 정책과제 연구비의 지원을 받아 수행된 연구이다.

References

  1. Ho-gwon Song, "Study on the Optimization of Spring Layout for Blanking Dies", Hanyang UNniversity, master's thesis, 2014. pp. 4~5
  2. Maeda T. , Nakagawa T, 1968, "Experimental Investigation on Fine Blanking", Sci. Paper I.P.C.R., Vol 62, No. 2, pp. 65~80
  3. C. K. Yoo, S. T. Won, "A Study of the Shearing Force as a Function Trim Punch Shape and Shearing Angle," Transactions of Materials Processing, Vol.24, No.2, 2015
  4. A. Konieczny, T. Henderson, "On Formability Limitations in Stamping Involving Sheared Edge Stretching," SAE Technical Paper, 2007-01-0340.
  5. Ho-gwon Song, "Study on the Optimization of Spring Layout for Blanking Dies", Hanyang UNniversity, master's thesis, 2014. pp. 6~7
  6. Panyeol Yoo, "A Study on V-indenter Ring's Effect to Shearing Surface in Fine Blanking" Hanyang UNniversity, master's thesis, 2010.