A locking force measuring device for angular contact ball bearings

Abstract

The utility model relates to the field of bearing processing, and specifically discloses a locking force measuring device for angular contact ball bearings. The locking force measuring device includes a workbench, a mounting assembly, a loading assembly and a measuring assembly; the mounting assembly includes a first mounting bracket and a second mounting bracket, the first mounting bracket is provided with an outer ring limiting hole, and the outer ring limiting hole is provided with an outer ring retaining edge; the second mounting bracket is provided with a guide hole, the mounting assembly includes an inner ring loading unit, the inner ring loading unit includes a transmission rod and an inner ring push block, and the transmission rod is slidably arranged in the guide hole; the loading assembly includes a loading bracket and a power member, the power member is arranged on the loading bracket, and is connected to the transmission rod through the measuring assembly. The locking force measuring device described above can simulate the working condition of incorrect load application, and measure the locking force in the form of loading to force the loose sleeve, providing a theoretical basis for predicting the bearing life and actual selection application.

Description

Technical Field

[0001] The utility model relates to the field of bearing processing, in particular to a locking force measuring device for angular contact ball bearings. Background Art

[0002] Bearings are an important component used in mechanical equipment. Their main function is to support the rotating body, reduce the friction coefficient during the movement of the rotating body, and ensure the rotation accuracy. In order to adapt to different working conditions, there are also various types of bearings. For example, angular contact ball bearings can bear radial loads and axial loads at the same time by increasing the one-way flange, and can work at a higher speed, while taking into account high-speed performance and load-bearing performance. Figure 1 The figure shows a cross-sectional view of an angular contact ball bearing. An angular contact ball bearing can only bear unidirectional axial loads. Figure 1 The load direction is shown in F. When the load direction is opposite, there is a risk of separation between the inner ring and the outer ring.

[0003] Therefore, among the design parameters of angular contact ball bearings, the bearing locking force is a very important parameter in the bearing design parameters. The locking mouth is the structural design for the installation of rolling elements, also known as the assembly locking mouth. The height of the rib on the locking mouth side is relatively small. The locking mouth design and processing is a necessary process for angular contact ball bearings, that is, angular contact ball bearings must have a suitable assembly locking mouth. If the locking mouth is too large, the steel ball will be scratched during assembly; if the assembly locking mouth is too small, the outer ring and inner ring of the bearing will be easily separated, but when the load is applied in the wrong direction, the steel ball will fall out. Reasonable locking mouth design is the key to ensuring the quality of the bearing. Unreasonable locking mouth height design and processing will affect the bearing rotation accuracy and vibration, and may even cause loose sleeves during installation. Therefore, it is necessary to test the locking force after the bearing design and processing is completed. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a locking force measuring device for angular contact ball bearings, which can simulate the working condition of incorrect load application and measure the locking force in the form of loading to force the sleeve to loosen, thereby providing a theoretical basis for predicting the bearing life and actual selection application.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is as follows: a locking force measuring device for angular contact ball bearings, comprising a workbench, a mounting assembly, a loading assembly and a measuring assembly;

[0006] The mounting assembly comprises a first mounting bracket and a second mounting bracket, both of which are arranged on a workbench, the first mounting bracket is provided with an outer ring limiting hole, and the outer ring limiting hole is provided with an outer ring retaining edge;

[0007] The second mounting bracket is provided with a guide hole, and the guide hole is aligned with the outer ring limit hole; the mounting assembly includes an inner ring loading unit, and the inner ring loading unit includes a transmission rod and an inner ring push block, and the transmission rod is slidably arranged in the guide hole; the inner ring push block is arranged at one end of the transmission rod and is located on the side of the second mounting bracket facing the first mounting bracket;

[0008] The loading assembly includes a loading bracket and a power piece. The loading bracket is arranged on a workbench, and the second mounting bracket is located between the loading bracket and the first mounting bracket. The power piece is arranged on the loading bracket and connected to the transmission rod through the measuring assembly.

[0009] During measurement, the assembled angular contact ball bearing to be measured is installed into the outer ring limit hole between the first mounting bracket and the second mounting bracket, wherein the outer ring of the angular contact ball bearing is matched with the outer ring limit hole, and the end of the outer ring is in contact with the outer ring rib, ensuring that the load-bearing rib of the outer ring is set toward the second mounting bracket. Subsequently, the power part works to push the transmission rod and the inner ring loading unit toward the angular contact ball bearing bracket until the inner ring loading unit contacts the end face of the inner ring of the angular contact ball bearing, completing the installation operation.

[0010] Finally, the power part continues to load until the angular contact ball bearing is loose, and the measurement is completed. During the measurement process, the applied load size is detected in real time through the measuring component, and the maximum value of the load is the locking force of the angular contact ball bearing.

[0011] The locking force measuring device of the present application can simulate the working condition where the load is applied in the wrong direction, and measure the locking force in the form of loading to force the angular contact ball bearing to loosen, thereby providing a theoretical basis for predicting the bearing life and actual selection and application.

[0012] Preferably, a slide groove is provided on the workbench, and the first mounting bracket, the second mounting bracket and the loading bracket are respectively slidably connected to the workbench through the slide groove, and locking units are respectively provided between the first mounting bracket, the second mounting bracket, the loading bracket and the workbench.

[0013] The relative positions of the first mounting bracket, the second mounting bracket and the loading bracket can be adjusted to facilitate the disassembly and assembly of the angular contact ball bearing.

[0014] Preferably, a linear bearing is provided between the transmission rod and the guide hole.

[0015] Preferably, a disassembly notch is provided on the outer ring rib to prevent the outer ring from being unable to be disassembled after the measurement is completed.

[0016] Preferably, the power component is an electric cylinder.

[0017] Preferably, the measuring component comprises a pressure sensor.

[0018] Preferably, the inner ring push block is provided with an inner ring limiting boss and an abutment step, and the abutment step is arranged in a ring around the inner ring limiting boss.

[0019] The inner ring limiting boss is used to be inserted into the inner ring for radial limiting, and the abutment step is used to contact the inner ring end face and apply load.

[0020] Preferably, the inner ring push block is provided with a mounting hole, and the inner ring push block is sleeved on the transmission rod through the mounting hole and locked by a locking nut. The inner ring push block can be replaced according to different bearing models.

[0021] Preferably, the outer diameter of the inner ring push block is smaller than the inner diameter of the outer ring rib. After the bearing is loosened, the inner ring can continue to move forward synchronously with the inner ring push block and pass through the outer ring limit hole, so that the inner ring can be removed more conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a cross-sectional view of an angular contact ball bearing;

[0023] Figure 2 Schematic diagram of the structure of the locking force measuring device for angular contact ball bearings according to this embodiment;

[0024] Figure 3 It is a partial cross-sectional view from the front of the locking force measuring device for angular contact ball bearings of this embodiment;

[0025] Figure 4 is a cross-sectional view of the installation assembly in the locking force measuring device for an angular contact ball bearing according to this embodiment, and the angular contact ball bearing is now in a state of being installed;

[0026] Figure 5 This is a cross-sectional view of the installation assembly in the locking force measuring device for an angular contact ball bearing according to this embodiment, and the angular contact ball bearing is in a loose sleeve state at this time;

[0027] Figure 6 is a cross-sectional view of the installation assembly in the locking force measuring device for angular contact ball bearings according to this embodiment, in a state where the angular contact ball bearings are not installed;

[0028] Figure 7 is a cross-sectional view of a first mounting bracket in the locking force measuring device for an angular contact ball bearing according to this embodiment;

[0029] Figure 8 This is a schematic structural diagram of an inner ring loading unit in a locking force measuring device for an angular contact ball bearing according to this embodiment;

[0030] Fig. 9An exploded view of an inner ring loading unit in a locking force measuring device for an angular contact ball bearing according to this embodiment;

[0031] Fig.10 It is a schematic structural diagram of the inner ring push block in the locking force measuring device for angular contact ball bearings in this embodiment. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model. Example

[0033] like Figure 2 and Figure 3 As shown, a locking force measuring device for an angular contact ball bearing comprises a workbench 1, a mounting assembly, a loading assembly and a measuring assembly 3.

[0034] like Figure 2 and Figure 3 As shown, the mounting assembly includes a first mounting bracket 42 and a second mounting bracket 41, and the first mounting bracket 42 and the second mounting bracket 41 are both arranged on the workbench 1. Figure 7 As shown, the first mounting bracket 42 is provided with an outer ring limiting hole 421, and the outer ring limiting hole 421 is provided with an outer ring retaining edge 422. The outer ring limiting hole 421 is used to install the outer ring of the angular contact ball bearing, and the outer ring retaining edge 422 is used to bear the load. Figure 7 As shown, specifically, a disassembly notch 423 is provided on the outer ring rib 422 to prevent the outer ring from being unable to be disassembled after the measurement is completed.

[0035] like Figure 4-Figure 6 As shown, the second mounting bracket 41 is provided with a guide hole, and the guide hole is aligned with the outer ring limit hole 421. The mounting assembly includes an inner ring loading unit 43, and the inner ring loading unit 43 includes a transmission rod 431 and an inner ring push block 432. The transmission rod 431 is slidably arranged in the guide hole. The inner ring push block 432 is arranged at one end of the transmission rod 431 and is located on the side of the second mounting bracket 41 facing the first mounting bracket 42. Specifically, a linear bearing 44 is arranged between the transmission rod 431 and the guide hole.

[0036] like Figure 1 and Figure 2As shown, the loading assembly includes a loading bracket 22 and a power member 21, the loading bracket 22 is arranged on the workbench 1, and the second mounting bracket 41 is located between the loading bracket 22 and the first mounting bracket 42. The power member 21 is arranged on the loading bracket 22 and connected to the transmission rod 431 through the measuring assembly 3. Specifically, the power member 21 is an electric cylinder, and the measuring assembly 3 includes a pressure sensor.

[0037] During measurement, the assembled angular contact ball bearing 5 to be measured is installed into the outer ring limiting hole 421 between the first mounting bracket 42 and the second mounting bracket 41, wherein the outer ring of the angular contact ball bearing 5 is matched with the outer ring limiting hole 421, and the end of the outer ring is in contact with the outer ring rib 422, ensuring that the load-bearing rib of the outer ring is set toward the second mounting bracket 41. Subsequently, the power member 21 works to push the transmission rod 431 and the inner ring loading unit 43 toward the angular contact ball bearing 5 bracket until the inner ring loading unit 43 contacts the end face of the inner ring of the angular contact ball bearing 5, completing the installation operation, i.e. Figure 4 It should be noted that the space between the first mounting bracket and the second mounting bracket is limited, and when disassembling the angular contact ball bearing, the first mounting bracket can be removed first.

[0038] Finally, the power member 21 continues to load until the angular contact ball bearing 5 is loose, that is, Figure 5 During the measurement, the load applied is detected in real time by the measuring component 3, and the maximum value of the load is the locking force of the angular contact ball bearing.

[0039] The locking force measuring device of the present application can simulate the working condition where the load is applied in the wrong direction, and measure the locking force in the form of loading to force the angular contact ball bearing to loosen, thereby providing a theoretical basis for predicting the bearing life and actual selection and application.

[0040] like Figure 2 As shown, specifically, the workbench 1 is provided with a slide groove 11, and the first mounting bracket 42, the second mounting bracket 41, and the loading bracket 22 are respectively slidably connected to the workbench 1 through the slide groove 11, and locking units 12 are respectively provided between the first mounting bracket 42, the second mounting bracket 41, the loading bracket 22 and the workbench 1. The relative positions between the first mounting bracket 42, the second mounting bracket 41, and the loading bracket 22 can be adjusted to facilitate the disassembly and assembly of the angular contact ball bearing.

[0041] like Figure 8-Figure 10As shown, further, the inner ring push block 432 is provided with an inner ring limiting boss 435 and an abutting step 434, and the abutting step 434 is arranged in an annular manner around the inner ring limiting boss 435. The inner ring limiting boss 435 is used to be inserted into the inner ring for radial limiting. The abutting step 434 is used to contact the end face of the inner ring and apply a load.

[0042] like Figure 8-Figure 10 As shown, specifically, the inner ring push block 432 is provided with a mounting hole 436, and the inner ring push block 432 is sleeved on the transmission rod 431 through the mounting hole 436 and locked by a locking nut 433. The inner ring push block 432 can be replaced according to different bearing models.

[0043] like Figure 8-Figure 10 As shown, specifically, the outer diameter of the inner ring push block 432 is smaller than the inner diameter of the outer ring rib 422. After the bearing is loosened, the inner ring can continue to move forward synchronously with the inner ring push block 432, and pass through the outer ring limit hole 421, so that the inner ring can be removed more conveniently.

[0044] In short, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A locking force measuring device for angular contact ball bearings, characterized in that: Including workbench, mounting assembly, loading assembly and measuring assembly; The mounting assembly comprises a first mounting bracket and a second mounting bracket, both of which are arranged on a workbench, the first mounting bracket is provided with an outer ring limiting hole, and the outer ring limiting hole is provided with an outer ring retaining edge; The second mounting bracket is provided with a guide hole, and the guide hole is aligned with the outer ring limit hole; the mounting assembly includes an inner ring loading unit, and the inner ring loading unit includes a transmission rod and an inner ring push block, and the transmission rod is slidably arranged in the guide hole; the inner ring push block is arranged at one end of the transmission rod and is located on the side of the second mounting bracket facing the first mounting bracket; The loading assembly includes a loading bracket and a power piece. The loading bracket is arranged on a workbench, and the second mounting bracket is located between the loading bracket and the first mounting bracket. The power piece is arranged on the loading bracket and connected to the transmission rod through the measuring assembly.

2. The locking force measuring device according to claim 1, characterized in that: The workbench is provided with a slide groove, and the first mounting bracket, the second mounting bracket and the loading bracket are respectively slidably connected to the workbench through the slide groove, and locking units are respectively provided between the first mounting bracket, the second mounting bracket, the loading bracket and the workbench.

3. The locking force measuring device according to claim 1, characterized in that: A linear bearing is arranged between the transmission rod and the guide hole.

4. The locking force measuring device according to claim 1, characterized in that: The outer ring rib is provided with a disassembly notch.

5. The locking force measuring device according to claim 1, characterized in that: The power part is an electric cylinder.

6. The locking force measuring device according to claim 1, characterized in that: The measuring component comprises a pressure sensor.

7. The locking force measuring device according to any one of claims 1 to 6, characterized in that: The inner ring push block is provided with an inner ring limiting boss and an abutting step, and the abutting step is arranged in a ring shape around the inner ring limiting boss.

8. The locking force measuring device according to claim 7, characterized in that: The inner ring push block is provided with a mounting hole, and the inner ring push block is sleeved on the transmission rod through the mounting hole and locked by a locking nut.

9. The locking force measuring device according to claim 7, characterized in that: The outer diameter of the inner ring push block is smaller than the inner diameter of the outer ring rib.

Images