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Computational modelling of precision spindles supported by ball bearings |
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| Authors: | M Matsubara H Rahnejat R Gohar |
| Affiliation: | * Large Size Bearing Engineering Department, Nippon Seiko K.K., 1-5-50 Kugenauma-Shinmei, Fujisawa, Japan ? On-Line Surveillance, Monitoring and Diagnostic Unit (OSMAD), School of Mechanical, Aeronautical and Production Engineering, Kingston Polytechnic, Canbury Park Road, Kingston, U.K. ? Tribology Section, Department of Mechanical Engineering, Imperial College of Science and Technology, Exhibition Road, London, SW7 2BX, UK |
| Abstract: | This paper outlines a method for the modelling of a precision spindle supported by ball bearings. The support bearings are represented as piece-wise linear springs with damping provided by concentrated forces external to the bearings at each end of the spindle. The simplified damping model can simulate the squeeze film effect exerted by seals. The main elastic modes of the spindle vibrations are considered and the results corresponding to various machine tool spindle designs under various operating conditions are presented. |
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