ON THE INFLUENCE OF VIBROACOUSTIC OSCILLATIONS IN THE GRINDING PROCESS ON THE QUALITY INDICATORS OF GRINDED SURFACES

Abstract

The paper considers the possibility of determining the rational mode of grinding the surfaces of rolling bearing rings based on the measurement of vibroacoustic oscillations of the dynamic system. The block diagram of the dynamic system of the grinding machine for grinding bearing rings is presented. The margin of stability of the dynamic system of machines is determined by the oscillation index or Mikhailov criterion. Based on the processing of the results of vibroacoustic oscillations, the connection between the stability margin (according to the oscillation index) and the wear of the wheel is established. The Hurwitz test is used to assess the stability of a fifth-order dynamic system and to detect changes in the stability margin as the wheel wears. The transfer function of the dynamic system of the grinding machine for machining bearing rings is constructed, based on the analysis of which it is shown that the stability margin of the dynamic system can serve as a numerical assessment of the dynamic quality of the machine. The connection between the margin of safety and wheel wear during machining of bearing rings has been experimentally established. The comparison of machines on dynamic quality is carried out.