Bearing induced vibration in precision high speed routing spindles

This paper presents a detailed model of bearing vibration, including the ef fect of contact spring nonlinearity in balls-to-raceways' contacts. The mod el incorporates the effect of surface waviness of rolling elements and off- sized balls upon the dynamic internal radial clearance of the bearing. The vibration forces and moments generated are formulated and the significant p rincipal and secondary side-band contributions are highlighted. This model is employed successfully in the recognition of complex real-time vibration spectra of a precision routing spindle, obtained by accurate non-contact se nsors. (C) 1999 Elsevier Science Ltd. All rights reserved.