Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 30172
Finite Element Prediction on the Machining Stability of Milling Machine with Experimental Verification

Authors: Jui P. Hung, Yuan L. Lai, Hui T. You

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, which can further be identified in terms of the stability lobe diagram. Therefore, realization on the machine tool dynamic behavior can help to enhance the cutting stability. To assess the dynamic characteristics and machining stability of a vertical milling system under the influence of a linear guide, this study developed a finite element model integrated the modeling of linear components with the implementation of contact stiffness at the rolling interface. Both the finite element simulations and experimental measurements reveal that the linear guide with different preload greatly affects the vibration behavior and milling stability of the vertical column spindle head system, which also clearly indicate that the predictions of the machining stability agree well with the cutting tests. It is believed that the proposed model can be successfully applied to evaluate the dynamics performance of machine tool systems of various configurations.

Keywords: Machining stability, Vertical milling machine, Linearguide, Contact stiffness.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1083461

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 2215

References:


[1] Yoshimi Ito, Modular design for machine tool, McGraw Hill Company, 2008.
[2] Y. Seo, D. P. Hong, I. Kim, T. Kim, D. Sheen, G. B. Lee, Structure modeling of machine tools and internet-based implementation, Proceedings of the 2005 Winter Simulation Conference, December 2005, Orlando, Florida, USA.
[3] C. F. Beards, Damping in structural joints, The Shock and Vibration Digest, 24(7) (1992) 3- 7.
[4] M. Yoshihara, Computer-aided design improvement of machine tool states Incorporating joint dynamics data, Annals of the CIRP. 28(1) (1979) 241-246.
[5] Y.M. Huang, W.P. Fu, L.X. Dong, Research on the normal dynamic characteristic parameters of joint surface, Journal of Mechanical Engineering 29 (3) (1993) 74-77.
[6] Y. Lin, W. Chen, A method of identifying interface characteristic for machine tools design, Journal of Sound and Vibration 255(3) (2002) 481- 487.
[7] G. P. Zhang , Y. M. Huang, W. H. Shi, W.P. Fu, Predicting dynamic behaviors of a whole machine tool structure based on computer-aided engineering, International Journal of Machine Tools & Manufacture, 43 (2003) 699-706.
[8] K. J. Johnson, Contact mechanics, Cambridge University Press (1985).
[9] H. Ohta, Sound of linear guideway type recirculating linear ball bearings, Trans. ASME, Journal of Tribology. 121 (1999) 678-685.
[10] H. Ohta, E. Hayashi, Vibration of linear guideway type recirculating linear ball bearings, Journal of Sound and Vibration. 235(5) (2000) 847-861.
[11] J. C. Chang, J. S. S. Wu, J. P. Hung, Characterization of the dynamic behavior of a linear guideway mechanism, Structural Engineering Mechanics. 25(1) (2007) 1-10.
[12] J. P. Hung, Load effect on the vibration characteristics of a stage with rolling guides, Journal of Mechanical Science and Technology. 23(1) (2009) 92-102.
[13] Hiwin Technologies Company. Hiwin linear guideway technical information.Taiwan:HiwinCompany;2000. http://www.hiwin.com
[14] .Hiwin Technologies Company. Hiwin ballscrews technical information. Taiwan: Hiwin Company; 2000. http://www.hiwin.com
[15] THK Technologies Company. THK Ball screw technical information: ball screw peripheral. http://www.thk.com.
[16] THK CO., LTD., Features of the LM Guide, http://www.thk.com
[17] K. J. Johnson, Contact mechanics, Cambridge University Press (1985).
[18] D. E. Brewe, B. J. Hamrock, Simplified solution for elliptical-contact deformation between two elastic solid, Trans. ASME, Journal of Lubrication Technology. 99 (1997) 485-487.
[19] J. A. Greenwood, Analysis of elliptical Herztian contacts, Tribology International. 30 (1997) 235-237.
[20] M. F. Zaeh, T. Oertli, Finite element modelling of ball screw feed drive systems, Annals of the CIRP. 53(1) (2004) 289-293.
[21] C. Y. Lin, J. P. Hung, T. L. Lo, Effect of preload of linear guides on dynamic characteristics of a vertical column-spindle system", International Journal of Machine Tools and Manufacture. 5(8) (2010) 741-746.
[22] Y. Altintas, E. Budak, Analytical prediction of stability lobes in milling, Annals of the CIRP. 44 (1) (1995) 357-362.
[23] Gagnol, B.C. Bouzgarrou, P. Ray, C. Barra, Model-based chatter stability prediction for high-speed spindles. International Journal of Machine Tools & Manufacture. 47 (2007) 1176-1186.
[24] E. Budak, Analytical models for high performance milling. Part I: Cutting forces, structural deformations and tolerance integrity. International Journal of Machine Tools & Manufacture. 46 (2006) 1478-1488.