Precision angular contact bearing inspection tooling

Abstract

The invention discloses a precision angular contact bearing detection tool, comprising a core shaft and two axial loading end bushings, an installation area is arranged on the outer peripheral wall of the core shaft, an expansion ring is arranged on the installation area, the outer peripheral wall surface of the expansion ring is an inclined surface, the inclined surface is gradually inclined outward from the right side wall of the expansion ring toward the left side wall of the expansion ring, the axial cross section of the expansion ring is trapezoidal, a fixing part for firmly fixing the inner ring of the external bearing to be tested on the inclined surface and an adjusting part for adjusting the clearance between the inner peripheral wall of the inner ring of the external bearing to be tested and the inclined surface are arranged on the core shaft, a middle bushing for being sleeved on the outer ring of the external bearing to be tested is arranged on the core shaft, and linkage parts for suspending the external bearing to be tested for detection are arranged on the two axial loading end bushings, and a driving part is arranged at one end of the core shaft. The invention solves the problem of lack of a device for multi-directional detection of precision angular contact bearings in the prior art.

Description

Technical Field

[0001] The invention relates to the technical field of bearing detection tooling, in particular to a precision angular contact bearing detection tooling. Background Art

[0002] Bearing clearance is the gap between the rolling element of the bearing and the inner and outer ring housings of the bearing. The so-called bearing clearance refers to the amount of movement when the inner or outer ring of the bearing is fixed when it is not installed on the shaft or bearing box, and then the bearing clearance is moved radially or axially on the side that is not fixed. According to the direction of movement, it can be divided into radial clearance and axial clearance. The size of the clearance during operation (called working clearance) affects the rolling fatigue life, temperature rise, noise, vibration and other performance of the bearing. However, the existing technology lacks a device for multi-directional detection of precision angular contact bearings. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present invention provides a precision angular contact bearing detection tool to solve the problem that the prior art lacks a device for multi-directional detection of precision angular contact bearings.

[0004] To achieve the above-mentioned purpose, the present invention provides a precision angular contact bearing detection tool, including a core shaft and two axial loading end bushings, the core shaft outer peripheral wall is provided with an installation area for the external bearing to be tested to be sleeved, the installation area is provided with an expansion ring, the outer peripheral wall surface of the expansion ring is an inclined surface for contacting the inner peripheral wall surface of the inner ring of the external bearing to be tested, the inclined surface is gradually inclined outward from the right side wall of the expansion ring toward the left side wall of the expansion ring, the axial cross-section of the expansion ring is set in a trapezoidal shape, the core shaft is provided with a fixing part for firmly fixing the inner ring of the external bearing to be tested on the inclined surface and an adjusting part for adjusting the clearance between the inner peripheral wall of the inner ring of the external bearing to be tested and the inclined surface, the core shaft is provided with a middle bushing for sleeved on the outer ring of the external bearing to be tested, the two axial loading end bushings are both provided with linkage parts for suspending the external bearing to be tested for detection, and one end of the core shaft is provided with a driving part for driving the core shaft to rotate axially.

[0005] The advantages of adopting the above technical solution are as follows: the operator sets the bearing to be tested on the mandrel installation area, that is, passes the mandrel through the axial hole of the bearing to be tested, and then the operator screws in the bearing to be tested so that the bearing to be tested gradually moves to the inclined surface of the expansion ring. At this time, the operator can increase or decrease the clearance between the inner circumferential wall of the inner ring of the bearing to be tested and the inclined surface through the adjustment part, so as to facilitate the operator to perform different tests according to different clearance amounts, that is, to test the bearing service life, high-speed operation speed, operation temperature rise, fatigue life, operation noise and other tests under different clearance values, and at the same time, the original clearance, installation clearance, operation clearance and other tests can be performed. The bearing is tested or inspected under specific clearance values ​​such as rotational clearance. The setting of the above technology not only increases the detection types and scope, but also speeds up the detection efficiency; the setting of the fixing part is to fix the bearing to be tested after the operator adjusts the bearing clearance, thereby ensuring that the bearing to be tested will not shake or shift on the core shaft during the detection process, and at the same time ensure that the bearing to be tested will not be separated from the core shaft during the detection process, causing the test failure; the setting of the linkage part in the above technology can make the bearing to be tested suspended in the air for detection, reduce external stress interference, and at the same time, it can also apply a certain radial load to the bearing to be tested through the weight of components such as the middle bushing.

[0006] The present invention further provides that: the linkage member includes a test bearing, the two test bearings are sleeved on the core shaft, and the inner peripheral wall of the axial loading end bushing is a raceway for contacting the outer peripheral wall of the test bearing.

[0007] The benefits of adopting the above technical solution are: the two axial loading end bushings are arranged on both sides of the middle bushing, and the middle bushing and the bearing to be tested can be suspended between the two axial loading end bushings through the support of two test bearings, so that the bearing to be tested can be tested in a suspended environment, reducing external interference. At the same time, a certain radial load can be applied to the bearing to be tested through the weight of the middle bushing and other components.

[0008] The present invention further provides that: the adjusting member is an extrusion nut, the inner peripheral wall of the extrusion nut is threadedly matched with the outer peripheral wall of the core shaft, and the left side wall of the extrusion nut is an extrusion surface for extruding the right side wall of the inner ring of the external bearing to be tested.

[0009] The benefits of adopting the above technical solution are: the operator screws in the extrusion nut so that the extrusion surface of the extrusion nut gradually applies a certain force to the right side wall of the inner ring of the bearing to be tested, so that the bearing to be tested moves on the inclined surface. Because of the extrusion of the inclined surface, the inner ring of the bearing to be tested expands and can be matched to the use clearance, thereby achieving the purpose of adjusting the clearance of the bearing to be tested.

[0010] The present invention is further provided that: an extrusion gasket is provided on the left side of the extrusion nut.

[0011] The benefit of adopting the above technical solution is that the extrusion gasket is provided to prevent the extrusion nut from damaging the bearing to be tested.

[0012] The present invention is further provided that: the fixing part is a locking nut, the inner circumferential wall of the locking nut is threadedly matched with the outer circumferential wall of the core shaft, the right side wall of the locking nut is a limiting surface for contacting the left side wall of the inner ring of the external bearing to be tested and limiting the deviation or overturning of the external bearing to be tested, and a locking gasket is arranged on the right side of the locking nut.

[0013] The benefit of adopting the above technical solution is that the operator can screw in the locking nut so that the limiting surface of the locking nut pushes the locking gasket to buckle against the left wall of the inner ring of the bearing to be tested, thereby allowing the locking nut and the extrusion nut to form a clamping limit for the inner ring of the bearing to be tested, ensuring that the inner ring of the bearing will not shake or shift on the core shaft during the operation of the bearing, and at the same time ensuring that the bearing to be tested will not separate from the core shaft, thereby ensuring that the bearing can be tested smoothly.

[0014] The present invention further provides that: the driving member is a driving motor, and a coupling is connected between the output end of the driving motor and the core shaft.

[0015] The benefit of adopting the above technical solution is that the setting of the drive motor ensures that the core shaft can perform normal axial rotation when the bearing is tested, thereby ensuring that the bearing test can be carried out smoothly.

[0016] The present invention is further provided with pressure covers on both sides of the middle bushing, the pressure covers are bent toward the inner circumferential wall of the middle bushing to have a retaining ring for contacting the side wall of the outer ring of the bearing to be tested, the radial cross-section of the combination of the retaining ring and the pressure cover is "L" shaped, and the pressure cover is connected to the middle bushing by fixing bolts.

[0017] The benefits of adopting the above technical solution are: the setting of the pressure cover and the retaining ring can limit the outer ring of the bearing to be tested, ensuring that it will not shake, deviate, overturn, etc. during the bearing detection process, and at the same time can fix the outer ring of the bearing to facilitate the detection of bearing clearance.

[0018] The present invention further provides that: the outer peripheral wall surface of the middle bushing is a force-bearing surface for external force-applying hydraulic equipment to apply radial load.

[0019] The benefit of adopting the above technical solution is that the setting of the force-bearing surface enables the external force-applying hydraulic equipment to apply a radial load to the middle bushing, which is then transmitted to the bearing to be tested through the middle bushing, and then the bearing is tested under different radial loads, thereby expanding the detection range of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional view of the present invention;

[0021] Figure 2 It is a front cross-sectional view of the present invention. DETAILED DESCRIPTION

[0022] The present invention provides a precision angular contact bearing detection tool, comprising a core shaft 1 and two axial loading end bushings 2, wherein the outer peripheral wall of the core shaft 1 is provided with an installation area for the external bearing to be tested, and the installation area is provided with an expansion ring 11, and the outer peripheral wall surface of the expansion ring 11 is an inclined surface 12 for contacting the inner peripheral wall surface of the inner ring of the external bearing to be tested, and the inclined surface 12 is gradually inclined outward from the right side wall of the expansion ring 11 toward the left side wall of the expansion ring 11, and the axial cross section of the expansion ring 11 is set in a trapezoidal shape, and the core shaft 1 is provided with a device for firmly fixing the inner ring of the external bearing to be tested. A fixing part on the inclined surface 12 and an adjusting part for adjusting the clearance between the inner circumferential wall of the inner ring of the external bearing to be tested and the inclined surface 12, the core shaft 1 is provided with a middle bushing 13 for being sleeved on the outer ring of the external bearing to be tested, and the two axial loading end bushings 2 are provided with linkage parts for making the external bearing to be tested suspended in the air for testing, and one end of the core shaft 1 is provided with a driving part for driving the core shaft 1 to rotate axially, and the linkage part includes a companion test bearing 21, and the two companion test bearings 21 are sleeved on the core shaft 1, and the inner circumferential wall of the axial loading end bushing 2 is for the companion test bearing 21 The raceway 22 contacts the outer peripheral wall, the adjusting member is an extrusion nut 31, the inner peripheral wall of the extrusion nut 31 is threadedly matched with the outer peripheral wall of the core shaft 1, the left side wall of the extrusion nut 31 is an extrusion surface for extruding the right side wall of the inner ring of the external bearing to be tested, and an extrusion gasket 32 ​​is arranged on the left side of the extrusion nut 31, the fixing member is a locking nut 4, the inner peripheral wall of the locking nut 4 is threadedly matched with the outer peripheral wall of the core shaft 1, the right side wall of the locking nut 4 is a limiting surface for contacting the left side wall of the inner ring of the external bearing to be tested and limiting the deviation or overturning of the external bearing to be tested, and the locking nut 4 A locking gasket 41 is arranged on the right side, the driving part is a driving motor, a coupling 5 is connected between the output end of the driving motor and the core shaft 1, pressure covers 14 are arranged on both sides of the middle bushing 13, the pressure cover 14 is bent toward the inner peripheral wall of the middle bushing 13 to have a retaining ring 15 for contacting the side wall of the outer ring of the bearing to be tested outside, the radial cross-section of the combination of the retaining ring 15 and the pressure cover 14 is arranged in an "L" shape, the pressure cover 14 and the middle bushing 13 are connected by fixing bolts, and the outer peripheral wall surface of the middle bushing 13 is a force surface 131 for external force hydraulic equipment to apply radial load.

[0023] The external bearing to be tested described in the above technology is marked as 6 in the accompanying drawings.

[0024] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention shall be defined by the attached claims and their equivalents.

Claims

1. A precision angular contact bearing detection tool, characterized by: It comprises a core shaft and two axial loading end bushings, wherein the outer peripheral wall of the core shaft is provided with an installation area for the external bearing to be tested to be sleeved, and the installation area is provided with an expansion ring, the outer peripheral wall surface of the expansion ring is an inclined surface for contacting the inner peripheral wall surface of the inner ring of the external bearing to be tested, and the inclined surface is gradually inclined outward from the right side wall of the expansion ring toward the left side wall of the expansion ring, and the axial cross-section of the expansion ring is trapezoidal, and the core shaft is provided with a fixing part for firmly fixing the inner ring of the external bearing to be tested on the inclined surface and an adjusting part for adjusting the clearance between the inner peripheral wall of the inner ring of the external bearing to be tested and the inclined surface, and the core shaft is provided with a middle bushing for sleeved on the outer ring of the external bearing to be tested, and the two axial loading end bushings are provided with coupling parts for suspending the external bearing to be tested for detection. A movable part, one end of the core shaft is provided with a driving part for driving the core shaft to rotate axially, the linkage part includes a test bearing, two of the test bearings are sleeved on the core shaft, the inner circumferential wall of the axial loading end bushing is a raceway for contacting the outer circumferential wall of the test bearing, the adjusting part is an extrusion nut, the inner circumferential wall of the extrusion nut is threadedly matched with the outer circumferential wall of the core shaft, the left side wall of the extrusion nut is an extrusion surface for extruding the right side wall of the inner ring of the external bearing to be tested, and an extrusion gasket is arranged on the left side of the extrusion nut, the fixing part is a locking nut, the inner circumferential wall of the locking nut is threadedly matched with the outer circumferential wall of the core shaft, the right side wall of the locking nut is a limiting surface for contacting the left side wall of the inner ring of the external bearing to be tested and limiting the deviation or overturning of the external bearing to be tested, and a locking gasket is arranged on the right side of the locking nut.

2. The precision angular contact bearing detection tooling according to claim 1 is characterized in that: The driving member is a driving motor, and a coupling is connected between the output end of the driving motor and the core shaft.

3. The precision angular contact bearing detection tooling according to claim 1 is characterized in that: Pressure covers are provided on both sides of the middle bushing. The pressure covers are bent toward the inner wall of the middle bushing to form a retaining ring for contacting the side wall of the outer ring of the bearing to be tested. The radial cross-section of the combination of the retaining ring and the pressure cover is "L"-shaped. The pressure cover and the middle bushing are connected by fixing bolts.

4. The precision angular contact bearing detection tool according to claim 1, characterized in that: The outer peripheral wall surface of the middle bushing is a force-bearing surface for external force-applying hydraulic equipment to apply radial load.

Images