Analyzing the bearing wear using direct spectrum method when transferring the torque motion from the machine

Abstract

The present article examines rolling bearings with varying degrees of wear using direct spectrum method when operating from a machine drive. To achieve this purpose, a narrow-band spectrum analyzer was used. Also, several experiments were carried out to determine the effects of different types of bearing wear on the frequency characteristics of the vibroacoustic signal, which allows to predict the occurrence of defects in the bearing structure. Eventually, data were gathered on the increase in vibroacoustic noise in different types of wear and conclusions were drawn about the possibility of using the spectral method to predict failures during the operation of bearings. The results showed the lack of lubrication in the bearing and the presence of corrosion leads to an increase in amplitude frequencies in the high frequency range of 4000 - 10000 Hz. Moreover, the amplitude of the bearing without lubrication is about 35% higher than the amplitude of the worn bearing. Finally, due to the research carried out, it becomes possible to create a method for determining the type and nature of wear of rolling bearings of metal-cutting and other equipment. This will allow in the future to create a system for monitoring malfunctions directly during the operation of technological equipment without disassembling its units, reduce the cost of repair work and prevent emergency failures.