Process Design of Cold Forging for Drum Clutch with Inner Tooth Component

내 치형 드럼클러치의 냉간 단조 공정 설계

  • 박상수 (부산대학교 정밀기계과 대학원) ;
  • 김병민 (부산대학교 정밀정형 및 금형가공연구소) ;
  • 이정민 (부산대학교 정밀기계과 대학원)
  • Published : 2005.02.01

Abstract

A drum clutch which is a main part for the automatic transmission of auto-mobiles has been manufactured by glob threading and machining. The tooth shape of the drum clutch manufactured by machining has lower dimensional accuracy than that by pressing and its machining needs the enormous cost at plant investment. Thus, this study was designed to develop cold forging process and to improve the productivity and dimensional accuracy. In this work, variables affecting dimensional accuracy were first determined, then cold forming process design according to each variables was performed by FE simulation. Optimal process was suggested on the basis of analytical results.

Keywords

References

  1. Dohmann, F. and Traudt, O., 'Metal Flow and Tool Stress in Cold Forging of Gear Components,' Proc. 2th ICTP, Vol. II, pp. 1081-1089, 1987
  2. Izumisawa, M., 'Estimation of Forging Load by Upper Bound Approach-Study on Hot Forging of Straight Bevel Gears,' J. of Jstp, Vol. 18, No. 193, pp. 92-100, 1977
  3. Kim, D. H. and Kim, B. M., 'Preform Design of the Bevel Gear for the Warm Forging using Artificial Neural Network,' Journal of the Korean Society of Precision Engineering, Vol. 20, No.7, pp. 36-43, 2003
  4. Fujikawa, S., Yoshioka, H. and Shimamura, S., 'Cold and Warm Forging Applications in the Automative Industry,' J. Mater. Process. Technol., Vol. 35, pp. 317-342, 1992 https://doi.org/10.1016/0924-0136(92)90325-M
  5. Abdul, N. and Dean, T., ' An Analysis of the Forging of Spur Gear Forms,' lnt. J. Mach. Tool Des. Res., Vol. 26, No.2, pp. 113-121, 1986 https://doi.org/10.1016/0020-7357(86)90212-X
  6. Meidert, M., Knoerr, M., Wesphal, K. and Altan, T., 'Numerical and Physical modelling of cold forging of bevel gears,' Journal of Mat. Proc. Tech., Vol. 33, pp. 75-93, 1992 https://doi.org/10.1016/0924-0136(92)90312-G
  7. Tomov, B. I. and Gagov, V. I., 'Modeling and description of the near-net-shape forging of cylindrical spur gears,' Journal of Materials processing Technology, Vol. 92-93, pp. 448-449, 1999 https://doi.org/10.1016/S0924-0136(99)00169-7
  8. Kurt, Lange, 'Modem metal forming technology for industrial production,' Journal of Materials processing Technology, Vol. 71, pp.2-8, 1997 https://doi.org/10.1016/S0924-0136(97)00113-1
  9. Yang, T. So, 'Full film lubrication of deep drawing,' Tribology International, Vol. 32, pp. 89-96, 1999 https://doi.org/10.1016/S0301-679X(99)00015-8
  10. Takuda, H., Mori, K., Masachika, T., Yamazaki, E. and Watanabe, Y., 'Finite element analysis of the formability of an austenitic stainless steel sheet in warm deep drawing,' Journal of Materials Processing Technology, Vol. 143-144, ppo 242-248, 2003 https://doi.org/10.1016/S0924-0136(03)00348-0
  11. 'DEFORM Use's Manual V4.1,' Scientific Technologies Corporation, 1995