SU978685A1 - Method of determining quality of rolling bearings - Google Patents

Abstract

A METHOD FOR DETERMINING THE QUALITY OF THE QUALITY BEARINGS, which consists in rotating the bearing, changes the resonant frequency of the oscillating system containing the elastic element in the form of a rolling bearing, characterized in that the frequencies determine the constant component and the amplitudes of the harmonic components of the resonance frequency with frequencies equal to or a multiple of the rotational frequencies of the moving ring are separated and relatively movable and stationary rings of the ball, and with frequencies equal to multiples or combinations of these frequencies and d.c. S determined average stiffness, and on (A amplitudes constituting the error of manufacture and assembly of bearings.

Description

This invention relates to bearing industry and may be. mainly used to determine the stiffness of rolling bearings.

A known method for determining the stiffness of rolling bearings, which consists in rotating the bearing, measures the resonant frequency of a collar system containing an elastic element in the form of a rolling bearing.

However, the known method has the disadvantage that it has a low accuracy of measurement of the same bearing strength and does not allow determination of CC 1

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The aim of the invention is to improve the accuracy of stiffness measurement and the determination of errors in the manufacture and assembly of bearings.

This goal is achieved due to the fact that in the method of determining the quality of rolling bearings in your bearing, the resonant frequency of the oscillatory system containing the elastic element in the form of a rolling bearing is measured, the constant component and the amplitude of the harmonic components of the resonance are measured when measuring the resonant frequency frequencies with frequencies equal to or 39 times the frequencies of rotation of the moving ring, the separator relative to the moving and fixed rings, the ball, as well as frequencies equal to or multiple combinations of these frequencies, and the constant component determines the average stiffness, and the amplitudes of the components - the errors in the manufacture and assembly of sub-types. Figure 1 is a diagram of the device for the implementation of the method; Figs. 2 and 3, respectively, change the axial resonant frequency of the rotating ball bearing 4 to 2076084E in the absence of ring skews, and when the outer ring is shifted. The device for carrying out the method contains 2 mechanical oscillations mounted on the base 1, load 3 for loading the tested bearing A with the drive 5, as well as the low-frequency amplifier 6 connected to the measuring winding of the generator 2 with the amplitude limiter 7, the output of which is connected to the input of the control winding of the generator 5. 2 and through In zovatel chastotanapr voltage amplifier 9 DC 9 to the recorder 10 The process is carried out as follows. The test bearing 4 is mounted on the movable part of the generator 2 and loaded with a load 3, the drive loads 3 using the drive 5 to rotate and continuously measure the change in the resonant frequency, which is recorded using a 10 "recorder. At the same time, a harmonic analysis of the recording is made, which determines the constant component and the amplitudes of the harmonic components with the constant component determine the average axial stiffness, and the amplitudes of the components - the nature and size of the underhead defects pniki. The method allows to obtain more complete information about the rigidity of rolling bearings and eliminates the uncertainty in assessing the quality of their manufacture and assembly.

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Claims (1)

METHOD FOR DETERMINING THE QUALITY OF ROLLING BEARINGS, consisting in rotating a bearing, changing the resonant frequency of an oscillating system containing an elastic element in the form of a rolling bearing, characterized in that, in order to improve the accuracy of measurement and determine errors in the manufacture and assembly of bearings, when measuring the resonant frequency determine the constant component and the amplitudes of the harmonic components of the resonant frequency with frequencies equal to or multiple of the rotation frequencies of the movable ring, the separator with respect to the movable and fixed rings, the ball, as well as with frequencies equal to or multiple of the combinations of the indicated frequencies and the constant component, the average stiffness is determined, and the amplitudes of the errors in the manufacture and assembly of bearings are determined by the amplitudes.