Browse > Article

Effects of a drawbar and a rotor in dynamic characteristics of a high-speed spindle  

Chung Won-Jee (창원대학교 메카트로닉스공학부)
Lee Choon-Man (창원대학교 메카트로닉스공학부)
Lee Jung-Hwan (한국기계연구원 소재성형연구센터)
Lim Jeong-Suk (한국기계연구원 소재성형연구센터)
Publication Information
Journal of the Korean Society for Precision Engineering / v.23, no.3, 2006 , pp. 139-146 More about this Journal
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. For more quantitative analysis of a built-in motor's dynamic characteristics, that of tile mass and stillness effects are considered. And the drawbar in the spindle can be in various condition according to supporting stiffness between drawbar and shaft. Therefore, in this paper following items are performed and analyzed : 1. Modal characteristics of the spindle. 2. Analysis of rotor's mass and stiffness effects. 3. Modal characteristics of the spindle including drawbar, rotor and tool. The results show enough stiff supports must be provided between shaft and drawbar to prevent occurring drawbar vibration lower than the natural frequency of 1st bending mode of the spindle, and considering the mass and stiffness of built-in motor's rotor is important thing to derive more accurate results.
Keywords
high-speed spindle; natural frequency; modal analysis; finite element model;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Jo, J. J., Kim, S. I. and Choi, D. B., 'Dynamic Analysis of a High Speed Spindle syster for Lathes,' J. KSPE, Vol. 11, No.4, pp. 5-12, August, 1994
2 Park, B. Y. and Kim, J. G., 'Development of High Speed Machine Tool Spindle Regarding Vibration Characteristics,' J. KSPE, Vol. 9, No.3, pp. 149-156, Sep., 1992   과학기술학회마을
3 Kim, S. I., Jo, J. W., Lee, W. J. and Lee, Y. H., 'Static/Dynamic/Thermal Characteristics Analysis of a High-Speed Spindle System with 50,000rpm,' KSMTE, Spring Conference, pp. 494-499, 2003   과학기술학회마을
4 Ha, J. Y., Song, S. H. and Kwon, O. C., 'Dynamic Analysis of the High-Speed Spindle Structure for Machining Center,' KSMTE, Autumn Conference, pp. 40-45, 1996   과학기술학회마을
5 Ro, S. K., Park, J. K. and Kyung, J. G., 'Analysis of Dynamic Characteristics of A High-speed Milling Spindle Due to Support Stiffness of Drawbar,' KSMTE, Spring Conference, pp. 484-487, 2003   과학기술학회마을
6 Choi, D. B., Jo, J. J. and Kim, S. I., 'Dynamic Characteristics of Spindle with a Built-in Motor,' J. KSPE, Vol. 11, No.3, pp. 184-190, Jun., 1994