Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Dimensional Changes of Workpiece and Die in Cold Upsetting by the Closed-Die at Each Stage

냉간 밀폐 업세팅시 금형과 단조소재의 성형 단계별 치수 변화

  • 이영선 (한국기계연구원 고정연구부 소성응용그룹) ;
  • 권용남 (한국기계연구원 고정연구부 소성응용그룹) ;
  • 천세환 (부산대학교 대학원 정밀기계공학과) ;
  • 이정환 (한국기계연구원 고정연구부 소성응용그룹)
  • Published : 2003.11.01
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Abstract

The dimensions of die and workpiece are changed continuously during loading, unloading, and ejecting stage. Finally, to predict precisely the dimension of forged part and get the die dimension for the net-shape components, the analysis of die and workpiece should be evaluated from the loading to ejecting. Therefore, the experimental and FEM analyses are performed to investigate the elastic characteristics at workpiece and die in the closed-die upsetting for ferrous material FE techniques are proposed to consider the unloading and ejecting stages and estimate more precisely the dimension of forged part and die. The dimensional changes fur the workpiece were evaluated quantatively during loading, unloading, and ejecting stages. The strains measured by the strain gages were compared with the estimated values by the FEM.

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References

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