Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Quantitative Analysis of Effect of Shrink Fit in Cold Forging

냉간단조에서 금형 열박음 영향의 정량적 분석

  • Li, Qiushi (School of Mechanical and Aerospace Engineering, Gyeongsang National Univ.) ;
  • Kim, Min-Cheol (School of Mechanical and Aerospace Engineering, Graduate School, Gyeongsang National Univ.) ;
  • Jung, Dong-Chan (Taeyang Metal Industrial Co.) ;
  • Son, Yo-Hun (Youngsin Metal Industrial Co.) ;
  • Joun, Man-Soo (School of Mechanical and Aerospace Engineering, Gyeongsang National Univ.)
  • 이추실 (경상대학교 기계항공공학부) ;
  • 김민철 (경상대학교 대학원 기계항공공학부) ;
  • 정동찬 (태양금속공업(주)) ;
  • 손요헌 (영신금속공업(주)) ;
  • 전만수 (경상대학교 기계항공공학부)
  • Received : 2010.04.15
  • Accepted : 2010.12.09
  • Published : 2011.03.01
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Abstract

In this paper, effects of major design parameters of cold forging dies on die mechanics are quantitatively investigated with emphasis on shrink fit using a thermoelastic finite element method. A ball-stud cold forging process found in a cold forging company is selected as a test process and the effects of die insert material, magnitude of shrink fit, dimension of shrink ring, number of shrink rings, partition of die insert and clamping force on effective stress and circumferential stress are analyzed. It has shown that the number of shrink rings, magnitude of shrink fit, and Young's modulus of die insert material have strong influence on compressive circumferential stress in die insert but that the influence of the other design parameters is relatively weak.

Keywords

References

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