On the performance of multi-support spindle-bearing assemblies

Abstract

A theoretical investigation is undertaken to evaluate the effects of a number of support bearings, bearing settings and preload on the system natural frequencies and amplitudes of vibration of a spindle assembly supported by angular contact ball-bearings. The paper presents a generalized system of non-linear second-order ordinary differential equations for analysing multi-support spindle-bearing assemblies. The ball to raceway contacts are described by the Hertzian equation representing the non-linear elastic deformation of the rolling elements. The results show how significant frequencies and amplitudes vary with number of support bearings, orientations and preload.