Numerical Modelling and Experimental Validation of a Vertical Spindle Model
Bindu Kumar Karthikeyan
Bindu Kumar Karthikeyan, Government Engineering College, Thiruvananthapuram, Kerala, India.
Manuscript received on July 22, 2013. | Revised Manuscript received on August 17, 2013. | Manuscript published on August 30, 2013. | PP: 202-207 | Volume-2, Issue-6, August 2013.  | Retrieval Number: F2029082613/2013©BEIESP

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Abstract: Numerical modelling of a vertical spindle is presented. Numerical model is assumed to have five degrees of freedom. The results obtained from the numerical modelling are used to verify with the spectra obtained from experiments. The experiments are done in a high speed high precision router spindle running at 25,000 rpm, employing high quality ceramic bearings. Fine measurement of spindle vibration characteristics is carried out using laser vibrometry. The comparison of the results shows close match. The validated model then provides contact loads which are used for elastohydro dynamic analysis of grease lubricated contacts.
Keywords: Precision high speed spindles, Numerical modelling of spindle, Laser vibrometry.