Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Process Design of Shaft Considering Effect of Preform and Eccentric Load on Cold Forging Product in Multistage Former of Horizontal Type

수평식 냉간 다단포머에서 예비성형체와 편심하중을 고려한 Shaft의 성형공정설계

  • 박상수 (부산대학교 정밀기계공학과 대학원) ;
  • 이정민 (부산대학교 정밀기계공학과 대학원) ;
  • 김병민 (부산대학교 정밀정형 및 금형가공 연구소)
  • Published : 2005.02.01
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Abstract

This study deals with the cold forging process design for shaft in the main part of automobile motors with rectangular deep groove. In forging process, the accuracy and die lift is very important because it have influence on reduction of the production cost and the increase of the production rate. Therefore, it is necessary to develop the manufacturing process of shaft by cold forging., process variables are the cropped face angle of billet and the eccentric load of punch. The former is derived from cropping test, the latter is occurred by clearance between container and preform. Also, grooved preform select the process variable for decrease in punch deflection. We investigate that a deflection of punch and a deformation of preform to every process variables. Through this investigation, we suggest the optimal preform and process design, expect to be improved the tool life in forging process.

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References

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