Proceedings of the Korean Society for Technology of Plasticity Conference (한국소성가공학회:학술대회논문집)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
권호 표지

Design of Hexagonal Fitting Nut Preform Considering Ductile Fracture

연성파괴를 고려한 6각 피팅너트 예비성형체 설계

  • 박태준 (부산대학교 대학원 정밀기계공학과) ;
  • 김동진 (부산대 정밀정형 및 금형가공 연구소) ;
  • 김병민 (부산대 정밀정형 및 금형가공 연구소)
  • Published : 2001.05.01
Download PDF
⟨ Previous Next ⟩

Abstract

In the multi-stage former, manufacture of hexagonal fitting nut was generated in a defective products about $70{\~}80\%$. Defective products reduced in a product stiffness and increased a product cost. Defects for manufacturing hexagonal fitting nut caused in a increase of ductile fracture value. So in the study, a preform designed to reduce ductile fracture value and designed preform verified through the finite element simulation. In conclusion, Ductile fracture value reduced if A round dimension of preform reduced and a part of opposition angle contributed in Plenty a volume.

Keywords