Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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FEM Analyses of Hot Forging and Cold Sizing of a Spur Gear

스퍼어기어의 열간단조와 냉간사이징의 유한요소해석

  • 박종진 (홍익대학교 공과대학 기계공학과) ;
  • 이정환 (한국기계연구원 소재성형실)
  • Published : 1996.06.01
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Abstract

Recently, precision forging techniques are applied to manufacture spur gears. Compared to conventional machining, they produce parts of better mechanical properties and less residual stresses with a much higher production rate. In the present investigation a rigid-plastic three dimensional finite element method was applied to analyze hot forging and cold sizing of a spur gear by closed dies. The involute curve of a tooth profile was approximated by a circle close to the curve. Results of the analyses make it possible to predict local strengths of the gear die failure and an appropriate preform for cold sizing. It was found that the preform for cold sizing. It was found that the preform for the cold sizing is the most important because it determines whether the gears especially teeth can be successfully formed.

Keywords

References

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