A Study on the Extrusion Using Two-Step Processes for Manufacturing Helical Gear

2단계공정을 이용한 헬리컬기어 압출에 관한 연구

  • 정성윤 (부산대학교 기계기술연구소) ;
  • 박준홍 (동아대학교 신소성재RIC센터) ;
  • 김창호 (동의대학교 기계공학과) ;
  • 장영준 (부산대학교 기계공학부) ;
  • 김철 (부산대학교 기계기술연구소)
  • Published : 2007.08.01

Abstract

In this study, focusing on reducing a load in forming helical gears, the extrusion using two-step processes for manufacturing helical gear is proposed. The process is composed of the extrusion step in which spur gear to be used as a preform in next step is formed, and the torsion step in which the preform of spur gear is formed to helical gear. Upper-bound theory for the two-step process is applied and compared with the results of experiment. The result of upper-bound solution has a good agreement with that of the experiment and the FE analysis. The newly proposed method can be used as an advanced forming technique to remarkably reduce a forming load, to prolong a tool life, and to replace the conventional forming process of helical gears. Results obtained from the extrusion using two-step processes enable the designer and manufacturer of helical gear to be more efficient in this field.

Keywords

References

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