소성∙가공 (Transactions of Materials Processing)

  • 제8권1호
  • /
  • Pages.38-46
  • /
  • 1999
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  • 1225-696X(pISSN)
  • /
  • 2287-6359(eISSN)
한국소성∙가공학회 (The Korean Society for Technology of Plasticity and materials processing)
권호 표지

판재 프레스 성형 제품의 형상동결성 연구

A Study on Shape Fixability of Press Formed Parts

  • 한수식 (포스코기술연구소 박판연구그룹) ;
  • 박기철 (포스코기술연구소 박판연구그룹) ;
  • 남재복 (포스코기술연구소 박판연구그룹)
  • 발행 : 1999.02.01
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초록

This paper deals with the shape fixability of press formed parts through the use of a V-bending process and a U-bending one. The influence of material properties on the shape fixability in forming processes was investigated. A V-bending process had on optimum ben radius for each combination of parameters which caused maximum shape fixability. In the U-bending process the blank holder force could control the degree of shape fixability. A ha호 blank holding force resulted in a uniform strain distribution and increased shape fixability.

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참고문헌

  1. Metal Engineering Quarterly v.15 no.7 The effect of lateral drawing-in on stretch formability A.K.Ghosh
  2. J.Appl. Metal. Work. v.2-1 The stretch-bend forming of sheet metals Y.Demeri
  3. Tans. KSAE v.15-2 A plane strain stretching test for evaluating stamping formability S.Kim;J.B.Nam
  4. Int. J. Mech. Sci. v.23 On the range of applicability of results for springback of an elastic/perfectly plastic rectangular plate after subjecting it to biaxial pure bending W.Johnson;T.X.Yu
  5. proc. of ICTP Advanced Technology of Plasticity v.1 Analysis of springback in sheet forming operation S.C.TANG
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  7. SAE Transactions: J. of Materials & Manufacturing v.105 no.5 Springback of sheet metal bent to small radius/thickness ratios Sanchez,L.R.;Robertson,D.
  8. CIRP Annals. Manufacturing Technology v.42 no.1 Springback reduction in draw-bending process of sheet metals Schmoeckel,D.;Beth,M.