Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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A Prediction of the Amount of Dimensional Deformation of Addendum and Dedendum after Shrink Fitting Process

압입공정에서 기어의 이끝 및 이뿌리 변형량 예측

  • Kim, Ji-San (Interdisciplinary Department for Innovative Manufactory Engineering, Pusan National Univ.) ;
  • Hwang, Beam-Cheal (Research Institute of Mechanical Technology, Pusan National Univ.) ;
  • Bae, Won-Byong (School of Mechanical Engineering & RIMT, Pusan National Univ.) ;
  • Kim, Chul (Research Institute of Mechanical Technology, Pusan National Univ.)
  • 김지산 (부산대학교 첨단정밀협동과정) ;
  • 황범철 (부산대학교 기계기술연구원) ;
  • 배원병 (부산대학교 기계공학부 기계기술연구원) ;
  • 김철 (부산대학교 기계기술연구원)
  • Received : 2010.08.04
  • Accepted : 2010.12.20
  • Published : 2011.04.01
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Abstract

The warm shrink fitting process is generally used to assemble automobile transmission parts (shaft/gear). But the fitting process can cause the dimensions of addendum and dedendum of the gear to change with respect to the fitting interference and the profile of the gear. As a result, there may be additional noise and vibration between gears. To address these problems, we analyzed the warm shrink fitting process according to process parameters; the fitting interference between the outer diameter of the shaft and the inner diameter of the gear, the inner diameter of the gear, addendum and dedendum of the gear, the heating temperature. In this study, a closed form equation for predicting the amount of deformation of addendum and dedendum in the R-direction was proposed. And the FEA method to analyze the cooling process was proposed for thermal-structural-thermal coupled field analysis of the warm shrink fitting process (heating-fitting-cooling process).

Keywords

References

  1. Sung, D. H. and Kim, H. S., "A Study on 3 Shaft Hydromechanical Transmission Design Considering Power and Speed Characteristics," J. of KSME, Vol. 26, No. 12, pp. 2615-2623, 2002.
  2. Choi, S. H. and Kim, Y. S., "Characteristics on the Output Coupled Type CVT combined Differential Gear Unit," J. of KSPE, Vol. 18, No. 3, pp. 205-215, 2001.
  3. Kim, T. J., Kang, H. J., Kim, C., Chu, S. J. and Kim, H. Y., "Analysis of the Warm Shrink Fitting Process for Assembling the Part(Shaft and Output Gear)," J. of KSPE, Vol. 25, No. 6, pp. 47-54, 2008.
  4. Kim, H. Y., Choi, C. J., Kim. C. and Bae, W. B., "A Study on the Prediction of Teeth Deformation of the Automobile Transmission Part(shaft/Gear) in Warm shrink Fitting Process," J. of KSPE, Vol. 23, No. 9, pp. 54-60, 2006.
  5. Yoh, E. G. and Lee, Y. S., "Integrated Analysis for the Shrink-Fitted Die with Multi Stress-Ring of Dissimilar Materials," J. of KSPE, Vol. 18, No. 3, pp. 40-46, 2001.
  6. Lange, K., "Handbook of Metal Forming," McGraw- Hill Book Company, pp. 13.1-16.66, 1985.
  7. Laue, K. and Stenger, H., "Extrusion," American Society for Metals, pp. 356-363, 1981.
  8. Kim, H. Y., Kim, C. and Bae, W. B., "Development of Optimization Technique of Warm Shrink Fitting Process for Automobile Transmission Part(Shaft/Gear)," J. of KSPE, Vol. 23, No. 5, pp. 37-43, 2006.