Dynamic characteristics of linear rolling bearings for machine tools

• Autorzy: Sakai Y. , Tsutsumi M.
• Języki publikacji: EN

Abstrakty

EN

The present paper proposes a method for evaluating the dynamic characteristics of a single linear rolling bearing subjected to a radial force and a bending moment. In order to evaluate the damping of a rail-carriage system, a rectangular column with a flange is fixed to the carriage by bolts, and the free end of the column is excited by an impulse hammer in the horizontal (x), lateral (y), and radial (z) directions. The response is detected by an accelerometer mounted to the flange of the column. Both force and acceleration are input to an FFT analyzer, and the frequency response function (FRF) is calculated. The damping capacity in each direction is evaluated as a modal damping ratio, which is calculated based on the FRF. As a result, the damping ratio of the vibration mode in the feed (x) direction is higher than those of the other vibration modes. In addition, the influence of the nonlinearity of the linear rolling bearings on the dynamic characteristics is investigated. The results reveal that the dynamic characteristics of the linear rolling bearings depend on the excitation direction.

Słowa kluczowe

EN

damping; linear rolling bearing; response function; dynamic

• Wydawca: Wydawnictwo Wrocławskiej Rady FSNT NOT
• Czasopismo: Journal of Machine Engineering
• Rocznik: 2013
• Tom: Vol. 13, No. 3
• Strony: 129--142
• Opis fizyczny: Bibliogr. 13 poz., rys.

Twórcy

autor

Sakai Y.

• Tokyo Institute of Technology, Department of Mechanical and Control Engineering

autor

Tsutsumi M.

• Tokyo University of Agriculture and Technology, Institute of Engineering

Bibliografia

• [1] ISO 14728-1, 2004, Rolling bearings – linear motion rolling bearings - Part 1: Dynamic load ratings and rating life.
• [2] SHIMIZU S., SHARMA C.S., SHIRAI T., 2002, Life prediction for linear rolling element bearings: A new approach to reliable life assessment, Journal of Tribology, 124/1, 121 – 128.
• [3] SHIMIZU S., SHIMODA H., TOSHA K., 2008, Study on the life distribution and reliability of roller-based linear bearing, tribology transactions, 51/4, 446 – 453.
• [4] OHTA H., HAYASHI E., 2000, Vibration of linear guideway type recirculating linear ball bearings, Journal of Sound and Vibration, 235/5, 847 – 861.
• [5] YI Y-S., KIM Y.Y.,CHOI J.S., YOO J., LEE. D.J., LEE S.W., LEE S.J., 2008, Dynamic analysis of a linear motion guide having rolling elements for precision positioning devices, Journal of Mechanical Science and Technology, 22, 50 – 60.
• [6] BODE H., 1990, Rolling-bearing mounted linear guiding unit and damping unit, INA Walzlager Schaeffler KG, US Patent, No.4968155.
• [7] RAHMAN M., MANSUR M.A., LEE L.K., LUM J.K., 2001, Development of a polymer impregnated concrete damping carriage for linear guideways for machine tools, International Journal of Machine Tools & Manufacture, 41, 431 – 441.
• [8] POWALKA B., OKULIK T., 2010, Influence of application of special casting compound on dynamic characteristics of the guideway system, Journal of Machine Engineering, 10/2, 71 – 81.
• [9] RUSSELL T. GILMAN INC., 2001, Gilman linear guide slides catalog, 5.
• [10] NSK, Damping in linear ball guide, http://www.jp.nsk.com/services/pm_techreport/report40.html (in Japanese).
• [11] BRECHER C., FEY M., BAUMLER S., 2012, Identification method for damping parameters of roller linear guides, Production Engineering, 6, 505 – 512.
• [12] AL-BENDER F., SYMENS W., SWEVERS J., VAN BRUSSEL H., 2004, Theoretical analysis of the dynamic behavior of hysteresis elements in mechanical systems, International Journal of Non-Linear Mechanics, 39/10, 1721 – 1735.
• [13] TJAHJOWIDODO T., 2012, Theoretical analysis of the dynamic behavior of presliding rolling friction via skeleton technique, Mechanical Systems and Signal Processing, 29, 296 – 309.