Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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A New Cold Extrusion Process of Helical Gear and its Upper Bound Analysis

헬리컬기어의 새로운 냉간압출법과 상계해석에 관한 연구

  • Choe, Jae-Chan (Dept.of Mechanical Design Engineering, , Busan National University) ;
  • Jo, Hae-Yong (Mechanical Technology Research Center, Busan National University) ;
  • Gwon, Hyeok-Heung (Dept.of Mechanical Engineering, Graduate School of Busan National University) ;
  • Lee, Eon-Ho (Dept.of Mechanical Engineering, Graduate School of Busan National University)
  • 최재찬 (부산대학교 기계설계공학과) ;
  • 조해용 (부산대학교 기계기술연구소) ;
  • 권혁흥 (부산대학교 기계공학과 대학원) ;
  • 이언호 (부산대학교 기계공학과 대학원)
  • Published : 1992.09.01
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Abstract

A new helical gear extrusion process was proposed and its numerical solution program based on the upper bound method was developed. In the analysis the involute curve was used as a shape of die and the upper bound method was used to calculate energy dissipation rate. By this method the power requirement and optimum conditions necessary for extruding helical gear were successfully calculated. These numerical solutions were in good agreement with experimental data. In the experiment, die life was greatly improved compared with that of Samanta process and 4 .approx. 5 class helical gear of KS standard for automobile transmission was successfully manufactured.

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