DEVICE AND METHOD FOR EVALUATING RIGIDITY OF BEARING DEVICE, DEVICE AND METHOD FOR MANUFACTURING BEARING DEVICE, AND BEARING DEVICE

摘要

A manufacturing device (10) for a bearing device (5) formed of a pair of bearings (53), a shaft (52) installed in inner rings, and an outer ring mounting member (51) installed on outer rings, comprising excitation means (23a, 23b) for giving a radial input vibration to the inner rings or both ends of the shaft (52), a pair of input vibration detection means (31a, 31b) for detecting the vibration of the inner rings or both ends of the shaft (52), an adding means (33) for adding the outputs from the pair of input vibration detection means, a vibration detection means (31c) for detecting the vibration of a mass (54) installed on the outer ring mounting member (51), a transfer function calculation means (41) for calculating the resonance frequency of the bearing device (5) by providing a transfer function by using the output from the vibration detection means and an output from the adding means (33), and a rigidity calculation means (43) for providing the rigidity of the bearing device (5) based on the resonance frequency calculated by the transfer function calculation means, whereby the radial rigidity of the bearing device can be provided accurately.