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

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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A Study on closed-die forging of Spur Gears by Upper Bound Method

상계법에 의한 스퍼어 기어의 밀폐단조에 관한 연구

  • Choi, J.C. (Dept. of Mechanical Design Engineering, Pusan National University) ;
  • Hur, K.D. (Dept. of Mechanical Design, Dongeui University) ;
  • Kim, C.H. (Dept. of Mechanical Design Engineering, Pusan National University) ;
  • Choi, Y. (Dept. of Mechanical Design Engineering, Pusan National University)
  • 최재찬 (부산대학교 기계설계공학과) ;
  • 허관도 (동의대학교 기계설계학과) ;
  • 김창호 (부산대학교 기계설계공학과) ;
  • 최영 (부산대학교 기계설계공학과)
  • Published : 1994.03.01
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Abstract

For theoretical estimate of closed-die forging pressure, upper-bound method is applied to the involute tooth profile. In the analysis, the deformation regions have been divided into several zones. A constant frictional stress has been assumed on the contacting surfaces. Utilizing the formulated velocity fields, numerical calculations have been carried out to investigate the effects of various parameters, such as module, number of teeth and friction factor, on the forging of spur gears. Very close agreement was found between the predicted values of forging load and those obtained from experimental results.

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