Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
권호 표지

Improvement of a Stiffness for High-Speed Spindle Using the Taguchi Method

다구찌 방법을 이용한 고속주축의 강성 개선

  • 임정숙 (한국기계연구원 소재성형연구센터) ;
  • 정원지 (창원대학교 메카트로닉스공학부) ;
  • 이춘만 (창원대학교 메카트로닉스공학부) ;
  • 이정환 (한국기계연구원 소재성형연구센터)
  • Published : 2007.02.01
Download PDF
⟨ Previous Next ⟩

Abstract

The spindle system with a built-in motor can be used to simplify the structure of machine tools, to improve the machining flexibility of machine tools, and to perform the high speed machining. To improve the competition power of price to quality, spindle design is very important. Because it possesses over 10 percent of machine tool's price. The latest machine tools have rotational frequency and excellent about might and precision cutting. So it requires static and dynamic strength in the load aspect. In conclusion, the deformation of the spindle end have to extremely small displacement in static and dynamic load. In this study, On the assumption that the bearings that are supporting 24,000rpm high-speed spindle are selected in the most optimum condition, the natural frequency and deformation of the spindle end is obtained by FEM mode analysis. The Taguchi Method was used to draw optimized condition of bearing position and it's stiffness.

Keywords

References

  1. Choi, D. B., Jo, J. J. and Kim, S. I., 'Dynamic Characteristics of Spindle with a Built-in Motor,' J. of KSPE, Vol. 11, No. 3, pp.184-190, 1994
  2. Jo, J. J., Kim, S. I. and Choi, D. B., 'Dynamic Analysis of a High Speed Spindle system for Lathes,' J. of KSPE, Vol. 11, No. 4, pp.5-12, 1994
  3. Park, B. Y. and Kim, J. G., 'Development of High Speed Machine Tool Spindle Regarding Vibration Characteristics,' J. of KSPE, Vol. 9, No. 3, pp.149-156, 1992
  4. Kim, S. I., Jo, J. W., Lee, W. J. and Lee, Y. H., 'Staticl/Dynamic/Thermal Characteristics Analysis of a High-Speed Spindle System with 50,000rpm,' KSMTE 2003's Spring Conference, pp.494-499, 2003
  5. Lee, C. H., Lee, H. S., 'Static and Dynamic Weak Point Analysis of Spindle Systems Using Bending Curve,' J. of KSPE, Vol. 15, No. 12, pp.188-193, 1998
  6. Lee, C. H., Park, C. H. and Lee, H. S., 'The Contribution of Spindle Parts to Static, Dynamic Stiffness and Design Improvement,' KSPE 2002's Autumn Annual Meeting, pp. 985-988, 2002
  7. Choi, D. B, Jo, J. J. and Kim, S. I., 'Dynamic Characteristics of Spindle with a Built-in Motor,' J. of KSPE, Vol. 11, No. 3, pp.184-190, 1994
  8. Ro, S. K., Park, J. K. and Kyung, J. H., 'Analysis of Dynamic Characteristics of A High-spped Milling Spindle Due to Support Stiffness of Drawbar,' KSMTE Spring Conference, pp.484-487, 2003
  9. Lim, J. S., Chung, W. J., Lee, C. M. and Lee, J. H., 'Effects of a drawbar and a rotor in dynamic characteristics of a high-speed spindle,' J. of KSPE, Vol.23, No.3, pp. 139-146, 2006
  10. Park, S. H., 'Design of Experiments,' Minyoung Sa, pp563-589