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Paired bearing differential motion holder dynamic characteristic test device

A test device and dynamic characteristic technology, which is applied in the direction of mechanical bearing test, measuring device, test of mechanical parts, etc., to achieve the effect of reasonable structure installation, reliable measurement results and high detection accuracy

Active Publication Date: 2017-06-13
SHANGHAI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention provides a dynamic characteristic test device for a paired bearing differential cage

Method used

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  • Paired bearing differential motion holder dynamic characteristic test device
  • Paired bearing differential motion holder dynamic characteristic test device
  • Paired bearing differential motion holder dynamic characteristic test device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] In this example, see Figure 1~4 , a paired bearing differential cage dynamic characteristic test device, including a driving part, a loading part and a measuring part, a shaft 16 is installed on a bracket 10 of the test device, and two paired bearings are fixedly installed on the shaft 16 to form a paired bearing System, the two paired bearings are composed of the first paired bearing 5 and the second paired bearing 6, the first paired bearing 5 and the second paired bearing 6 are deep groove ball bearings that bear axial force, the first paired bearing Bearing 5 and the second paired bearing 6 are paired bearings composed of a pair of bearings of the same size. The paired bearings are installed back to back, and the inner and outer rings of the two paired bearings are respectively connected and rotated synchronously through the loading part. The outer rings of the first matching bearing 5 and the second matching bearing 6 are fixedly connected by a sleeve 7, and the o...

Embodiment 2

[0040] This embodiment is basically the same as Embodiment 1, especially in that:

[0041] In this embodiment, the first paired bearing 5 and the second paired bearing 6 are angular contact ball bearings, and the first paired bearing 5 and the second paired bearing of the differential cage dynamic characteristic test device The bearings 6 are installed in series, and the outer rings are connected through the sleeve 7. The sleeve can ensure the coaxiality of the outer rings of the first matching bearing 5 and the second matching bearing 6. By controlling the speed of the cage of the first matching bearing 5, Just can make the inner ring drive the outer ring to rotate through the friction between the ball and the raceway, and realize the reverse rotation of the inner and outer rings of the second matching bearing 6 . The electric spindle 13 is connected to the shaft 16 through the coupling 12, the stepper motor 1 is connected to the cage connection sleeve 19 through the synchron...

Embodiment 3

[0044] This embodiment is basically the same as the previous embodiment, and the special features are:

[0045] In this embodiment, the first paired bearing 5 and the second paired bearing 6 use a pair of bearings of different sizes to form a paired bearing, and are installed on the stepped shaft section of the shaft 16 . When the paired bearings of this embodiment are chosen to be inconsistent in size, the test device of this embodiment can still study the dynamic characteristics of the cage.

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Abstract

The invention discloses a paired bearing differential motion holder dynamic characteristic test device. Inner rings and outer rings of paired bearings are connected respectively and rotate synchronously, and an electric spindle drives the inner rings to rotate and controls the rotation speed of a holder of the bearings, so that the inner rings drive the outer rings through friction between a ball and a roller path to rotate, and differential motion of the inner rings and the outer rings of the tested bearings and controlling over the holder rotation speed are achieved; a corresponding tooth-embed type high-precision holder rotation speed control driving mechanism is arranged, a holder connecting sleeve is connected with the holder of the bearings in an embedded mode and connected with a toothed synchronous belt wheel, and a stepping motor controls the rotation speed of the holder through toothed synchronous belt transmission. A loading part is located between the outer rings of the paired bearings and achieves axial constant pressure loading through a compression spring, and in a measuring part, a laser vibrometer is placed in the axial direction of the tested bearings to measure the swing vibration and vortex motion conditions of the holder. The device is ingenious in structure, no special processing needs to be conducted on the tested bearing, and when the differential motion of the inner rings and the outer rings of the tested bearings exists, the holder dynamic characteristic measurement is achieved.

Description

technical field [0001] The invention relates to a bearing test device, in particular to a dynamic characteristic test device of a paired bearing assembly, which is applied in the technical field of performance test and service life evaluation of mechanical connectors. Background technique [0002] With the rapid development of my country's economy and the significant improvement of comprehensive national strength, the speed and carrying capacity of various precision machinery have also been greatly improved. Therefore, the speed of precision bearings is required to be higher and higher, and the carrying capacity is increasing. And it should have good dynamic stability and long service life. [0003] Scholars at home and abroad have studied rolling bearings for a long time, but relatively little research on high-speed rolling bearing cages. This is because some rolling bearings are used in more precise applications, and there are many factors that affect their performance. At ...

Claims

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Application Information

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IPC IPC(8): G01M13/04
CPCG01M13/04G01M13/045
Inventor 陈晓阳王林泉张涛王正良
Owner SHANGHAI UNIV
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