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High-speed angular contact ball bearing cage dynamic characteristics testing device

A technology of angular contact ball bearings and dynamic characteristics, which is applied in the direction of mechanical bearing testing, etc., can solve the problem that the speed of the inner ring of the tested bearing and the cage cannot be increased, and achieve the effect of increasing the relative speed and ensuring synchronization

Active Publication Date: 2019-12-06
SHANGHAI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the high-speed angular contact ball bearing cage dynamic characteristic test, due to the limitation of the motor or spindle speed and the sampling frequency of the displacement sensor, the speed of the inner ring of the tested bearing and the cage cannot be increased, and the radial direction of the cage cannot be increased. The displacement test needs to change or destroy the technical defect of the bearing structure. A high-speed angular contact ball bearing cage dynamic characteristic test device is proposed to realize the high relative speed of the inner and outer rings of the bearing without changing the structural form of the tested bearing. Accurately and conveniently test the rotating speed, axial swing and radial whirl of the cage

Method used

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  • High-speed angular contact ball bearing cage dynamic characteristics testing device
  • High-speed angular contact ball bearing cage dynamic characteristics testing device
  • High-speed angular contact ball bearing cage dynamic characteristics testing device

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Experimental program
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Effect test

Embodiment 1

[0024] see figure 1 , a high-speed angular contact ball bearing cage dynamic characteristic testing device, which includes a base (21), a driving mechanism, a loading mechanism and a cage displacement measuring mechanism, is characterized in that: the driving mechanism is installed side by side on the base (21) consists of the first driving mechanism and the second driving mechanism, the first and second two driving mechanisms respectively drive the inner ring and the outer ring of the tested bearing (7) to rotate in reverse; the loading structure includes diameter To the loading mechanism and the axial loading mechanism, apply radial and axial loads to the tested bearing (7) respectively; the cage displacement measurement mechanism is two laser line displacement sensors (8,10) installed on the base (21 ) and vertically arranged near the outer end of the tested bearing (7), aligning with the cage of the tested bearing (7) to measure its central axial and radial displacement. ...

Embodiment 2

[0026] This embodiment is basically the same as Embodiment 1, and the special features are as follows:

[0027] see Figure 1 to Figure 6, the first driving mechanism is a motor first (1) connected to a transmission shaft first (5) through a coupling first (2) to drive the inner ring of the tested bearing (7); the second driving mechanism is a Motor B (20) drives the outer ring of the tested bearing (7) through a transmission shaft B (16) and a friction wheel transmission mechanism; two motors A and B (1, 20) are arranged side by side; the transmission shaft A ( 5) One end is tightly connected with the inner ring of the tested bearing (7), one end of the drive shaft B (16) is tightly connected with the friction wheel (13), and is fitted on the tested bearing (7) through a loading wheel (11). Another friction wheel (6) on the outer ring forms a friction wheel transmission mechanism, and the two transmission shafts A and B (5,16) are installed on the two bearing supports A and ...

Embodiment 3

[0029] see Figure 1 to Figure 6 , the present embodiment is basically the same as Embodiment 1, and the special features are as follows:

[0030] The two motors A and B (1, 20) are arranged side by side, and respectively drive the inner and outer rings of the tested bearing (7) to rotate in reverse through the transmission shafts A and B (5, 16) and the friction wheel transmission mechanism. The friction wheel transmission structure is that the friction wheel (13) is tightly connected with one end of the transmission shaft (16), the other friction wheel (6) is tightly connected with the outer ring of the tested bearing (7), and the loading wheel (11) is connected with the two The friction wheels (6, 13) are in contact and arranged in a triangle, and the loading wheel (11) is pressed by a spring (15) to generate pressure between it and the friction wheels (6, 13) to realize friction transmission. The loading wheel (11) is connected with the crossbeam of the loading wheel supp...

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Abstract

The invention relates to a high-speed angular contact ball bearing retainer dynamic feature testing device, which comprises a base, a driving mechanism, a loading mechanism and a retainer displacement measurement mechanism, wherein the driving mechanism is composed of a first driving mechanism and a second driving mechanism arranged on the base side by side, and the first driving mechanism and the second driving mechanism drive an inner ring and an outer ring of a tested bearing to rotate reversely; the loading mechanism comprises a radial loading mechanism and an axial loading mechanism for applying radial load and axial load to the tested bearing; and according to the retainer displacement measurement mechanism, two laser line displacement sensors are arranged on the base, vertically arranged at the outer end close to the tested bearing, and aligned with the retainer of the tested bearing for central axial and radial displacement measurement.

Description

technical field [0001] The invention relates to the field of dynamic performance testing of high-speed angular contact ball bearings, in particular to a dynamic characteristic testing device for cages of high-speed angular contact ball bearings. Background technique [0002] For light-load and high-speed angular contact ball bearings, the failure is mainly due to the unstable movement of bearing parts rather than fatigue. The slipping and unstable movement of the cage is one of the important reasons for the sudden failure of high-speed rolling bearings. The movement of the cage is very complicated due to the coupling effect between the cage and the rolling elements, the collision and friction of the guide rib of the ferrule, the inertial force of the cage, and the lubrication effect. Theoretical and experimental research on maintaining stability has always been a hot and difficult issue in the study of dynamic characteristics of rolling bearings. With the development of com...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/04
CPCG01M13/04
Inventor 张涛陈晓阳王林泉顾家铭
Owner SHANGHAI UNIV