Commenced in January 2007
Paper Count: 31482
Effect of the Machine Frame Structures on the Frequency Responses of Spindle Tool
Abstract:Chatter vibration has been a troublesome problem for a machine tool toward the high precision and high speed machining. Essentially, the machining performance is determined by the dynamic characteristics of the machine tool structure and dynamics of cutting process. Therefore the dynamic vibration behavior of spindle tool system greatly determines the performance of machine tool. The purpose of this study is to investigate the influences of the machine frame structure on the dynamic frequency of spindle tool unit through finite element modeling approach. To this end, a realistic finite element model of the vertical milling system was created by incorporated the spindle-bearing model into the spindle head stock of the machine frame. Using this model, the dynamic characteristics of the milling machines with different structural designs of spindle head stock and identical spindle tool unit were demonstrated. The results of the finite element modeling reveal that the spindle tool unit behaves more compliant when the excited frequency approaches the natural mode of the spindle tool; while the spindle tool show a higher dynamic stiffness at lower frequency that may be initiated by the structural mode of milling head. Under this condition, it is concluded that the structural configuration of spindle head stock associated with the vertical column of milling machine plays an important role in determining the machining dynamics of the spindle unit.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1057027Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 2566
 J. Tlusty, M. Polacek, The stability of machine tools against self-excited vibrations in machining, 1963, in: Proceedings of the ASME International.
 J. Tlusty, Dynamics of high-speed milling, Trans. ASME, Journal of Engineering for Industry 108 (2) (1986) 59-67.
 F. Koenisberger, J. Tlusty, Machine tool structuresÔÇöVol. I: stability against chatter, Pergamon Press, Englewood Cliffs, NJ, 1967.
 S. A. Tobias, W. Fishwick, The chatter of lathe tools under orthogonal cutting conditions, Trans. ASME, Journal of Engineering for Industry 80 (1958) 1079-1088.
 Y. Altintas, E. Budak, Analytical prediction of stability lobes in milling, Annals of the CIRP 44 (1995) 357-362.
 E. Budak, Y. Altintas, Analytical prediction of chatter stability in millingÔÇöPart I: general formulation; Part II: application to common milling systems, Trans. ASME, Journal of Dynamic Systems, Measurement, and Control 120 (1998) 22-36.
 Yoshimi Ito, Modular design for machine tool, McGraw Hill Company, 2008.
 Y. Seo, D. P. Hong, I. Kim, T. Kim, D. Sheen, and G. B. Lee, Structure modeling of machine tools and internet-based implementation, Proceedings of the 2005 Winter Simulation Conference, December 2005, Orlando, Florida, USA.
 Y. Cao, Y. Altintas, Modeling of spindle-bearing and machine tool systems for virtual simulation of milling operations, International Journal of Machine Tools and Manufacturing 47 (2007) 1342-1350.
 M. Sulitka, P. Kolar, Calculation of spindle compliance considering it-s interaction with machine frame. Modern Machinery (MM) Science Journal 6 (2010) 180-185.
 P. Kolar, M. Sulitka, M. Janota, Simulation of dynamic properties of a spindle and tool system coupled with a machine tool frame, International Journal of Advanced Manufacturing Technology 54 (2011) 11-20.
 P. Albertelli, N. Cau, G. Bianchi, M. Monno, The effects of dynamic interaction between machine tool subsystems on cutting process stability, International Journal of Advanced Manufacturing Technology 58 (2012) 923-932.
 A. Archenti, M. Nicolescu, T. Lundholm, Virtual machining System engine for simulation of the process machine, Modern Machinery (MM) Science Journal 3 ( 2012) 309-314.
 Y. Altintas, Y. Cao, Virtual design and optimization of machine tool spindles. Annals of the CIRP 54(1)(2007) 379-382.
 A. Ertűrk, H. N. ┼Ézgűven, E. Budak, Analytical modeling of spindle-tool dynamics on machine tools using Timoshenko beam model and receptance coupling for the prediction of tool point FRF, International Journal of Machine Tools and Manufacture 46 (2006) 1901-1912.
 J. P. Hung, Y. L. Lai, C. Y. Lin, and T. L. Lou, Modeling the machining stability of vertical milling machine under the influence of the preloaded linear guide, International Journal of Machine Tools and Manufacture. 51(9)(2011)731-739.
 Hiwin Technologies Company. Hiwin linear guideway technical information. Taiwan: 2000. http://www.hiwin.com/online_cat
 Hiwin Technologies Company. Hiwin ballscrews technical information. Taiwan:2000. http://www.hiwin.com/online_cat
 THK Technologies Company. THK Ball screw technical information: ball screw peripheral. http://www.thk.com/online_cat.
 THK CO., LTD., Features of the LM Guide, http://www.thk.com/online_cat.