Test bench for bearing test

Abstract

The utility model provides a test bench for bearing testing, which relates to the technical field of bearing detection and comprises a detection bench, a rotating mechanism is arranged in the detection bench and comprises a first rotating rod, and the outer part of the lower end of the first rotating rod is rotatably connected with the inner bottom wall of the detection bench through a bearing. The upper end of the first rotating rod penetrates through and extends to the position above the detection table, the upper end of the first rotating rod is fixedly connected with a placement table, the first rotating rod is fixedly sleeved with a first worm gear, and the rotating angle of the placement table can be accurately controlled through a rotating mechanism composed of a first servo motor, a first worm and the first worm gear; the stable clamping mechanism drives a rotating disc through a second servo motor, a second worm and a second worm gear, an arc-shaped clamping block is driven to move through an inclined groove and a moving rod, stable clamping of the bearing is achieved, looseness caused by vibration impact in the testing process is avoided, the accuracy of a detection result is improved, and the testing efficiency is improved. And the detection efficiency is also improved.

Description

Technical Field

[0001] This utility model relates to the field of bearing testing technology, and in particular to a test bench for bearing testing. Background Technology

[0002] Hardness is one of the commonly used indicators for evaluating metallic materials. It can effectively reflect the mechanical properties of metals. The hardness of a metal often determines its physical characteristics and its use. At the same time, it can also reflect the differences in the performance of metallic materials under different conditions of microstructure, heat treatment process and chemical composition. Hardness testing is generally carried out by hardness testing equipment. In the production and processing of bearings, it is often necessary to test the bearings for hardness. When conducting hardness testing, it is generally necessary to test multiple points on a single bearing. After a point is tested, the bearing needs to be manually rotated by a certain angle to test the next point, which reduces the testing efficiency.

[0003] For example, a testing device for bearing hardness testing disclosed in Chinese patent literature (publication number: CN216309677U) not only eliminates the need for manual pressure to fix the bearing through multiple sets of pneumatic clamping components, but also significantly improves the fixing effect of the bearing. It is simple to operate, facilitates hardness testing, and improves the efficiency and accuracy of hardness testing results.

[0004] However, during the hardness testing of bearings, the bearings are subjected to significant impacts. Since pneumatic clamping is used and air pressure is compressible, the clamping blocks will inevitably loosen when the bearings are subjected to vibration and impact. This loosening will have many adverse effects on the testing process.

[0005] First, looseness can cause the bearing to be unstable in position during the testing process, affecting the accuracy of the testing points and reducing the precision of the testing results.

[0006] Secondly, frequent loosening requires constant adjustment of the clamping state, which increases the time cost of inspection and the complexity of operation. Utility Model Content

[0007] The purpose of this invention is to address the shortcomings of existing technologies, such as the current pneumatic clamping method which causes unstable position during bearing testing, reduces the accuracy of testing results, and requires frequent adjustments to the clamping state, thus reducing testing efficiency.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A test bench for bearing testing includes a test bench, the test bench having a rotating mechanism inside, the rotating mechanism including a first rotating rod, the lower end of the first rotating rod being rotatably connected to the inner bottom wall of the test bench via a bearing, the upper end of the first rotating rod penetrating and extending above the test bench, a placement platform being fixedly connected to the upper end of the first rotating rod, and a first worm gear being fixedly sleeved on the outside of the first rotating rod.

[0010] A first servo motor is fixedly installed on the inner bottom wall of the testing platform. A first worm is fixedly installed on the output shaft of the first servo motor through a coupling. The outer surface of the first worm meshes with the tooth surface of the first worm wheel. An annular groove is provided at the upper end of the testing platform. An arc-shaped slider distributed in an annular array is slidably connected to the inner wall of the annular groove. The upper ends of the multiple arc-shaped sliders are fixedly connected to the lower end of the placement platform.

[0011] The placement platform is equipped with a stabilizing clamping mechanism inside.

[0012] Preferably, the stabilizing clamping mechanism includes a second rotating rod, the lower end of which is rotatably connected to the inner bottom wall of the placement platform via a bearing.

[0013] Preferably, a second worm gear is fixedly sleeved on the outside of the second rotating rod, a second servo motor is fixedly installed on the inner bottom wall of the placement platform, and a second worm is fixedly installed on the output shaft of the second servo motor through a coupling.

[0014] Preferably, the outer surface of the second worm meshes with the tooth surface of the second worm wheel, the upper end of the placement platform is provided with stroke grooves distributed in a ring array, and the inner bottom wall of the placement platform is provided with limiting slide grooves distributed in a ring array.

[0015] Preferably, the inner wall of the limiting groove is slidably connected to a limiting slider, the upper end of the second rotating rod is fixedly connected to a rotating disk, the upper end of the rotating disk is provided with inclined grooves distributed in a ring array, and a moving rod is slidably inserted into the inner wall of the inclined groove.

[0016] Preferably, the lower end of the moving rod is fixedly connected to the upper end of the limiting slider, the upper end of the moving rod passes through the stroke groove and extends to the top of the placement platform, and an arc-shaped clamping block is fixedly connected to the upper end of the moving rod.

[0017] Preferably, a mounting bracket is fixedly connected to the upper end of the testing platform, a movable groove is provided at the upper end of the mounting bracket, a third servo motor is fixedly mounted on one side of the mounting bracket, and a lead screw is fixedly mounted on the output shaft of the third servo motor through a coupling.

[0018] Preferably, one end of the lead screw passes through the mounting bracket and is rotatably connected to the inner wall of one side of the moving groove via a bearing. A threaded block is threadedly connected to the outside of the lead screw. The outside of the threaded block is slidably connected to the inner wall of the moving groove. A hardness testing mechanism body is provided at the lower end of the threaded block.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] In this invention, the rotation mechanism composed of a first servo motor, a first worm gear, and a first worm wheel can precisely control the rotation angle of the placement platform, facilitating testing of different bearing positions. The stable clamping mechanism uses a second servo motor, a second worm gear, and a second worm wheel to drive the rotating disk, and drives the arc-shaped clamping block to move through the inclined groove and the moving rod, thereby achieving stable clamping of the bearing and preventing it from loosening due to vibration and impact during testing. This not only improves the accuracy of the test results but also enhances the testing efficiency. Attached Figure Description

[0021] Figure 1 A schematic diagram of the main structure of a test bench for bearing testing provided by this utility model;

[0022] Figure 2 A three-dimensional view of the test bench structure for bearing testing provided by this utility model;

[0023] Figure 3 A perspective view of the placement platform structure of a test bench for bearing testing provided by this utility model;

[0024] Figure 4 A three-dimensional view of the rotating disk structure of a test bench for bearing testing provided by this utility model;

[0025] Figure 5 This utility model provides a three-dimensional view of the mounting bracket structure for a test bench used for bearing testing.

[0026] Legend: 1. Testing table; 2. First rotating rod; 21. First worm gear; 22. First servo motor; 23. First worm; 24. Annular groove; 25. Arc-shaped slider; 3. Placement table; 31. Second rotating rod; 32. Second worm gear; 33. Second servo motor; 34. Second worm; 35. Stroke groove; 36. Limiting groove; 37. Limiting slider; 38. Rotating disk; 39. Inclined groove; 310. Moving rod; 311. Arc-shaped clamping block; 4. Mounting bracket; 5. Moving groove; 6. Third servo motor; 7. Lead screw; 8. Threaded block; 9. Hardness testing mechanism body. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0028] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be provided below with reference to relevant embodiments, and several embodiments of this utility model will be given. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this utility model more thorough and complete.

[0029] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] Example

[0032] like Figure 1-5 As shown, this utility model provides a technical solution: a test bench for bearing testing, including a test bench 1. The test bench 1 is equipped with a rotating mechanism, and the rotating mechanism includes a first rotating rod 2. The lower end of the first rotating rod 2 is rotatably connected to the inner bottom wall of the test bench 1 through a bearing. The first rotating rod 2 must not only bear the weight of the placement platform 3 and the bearing, but also ensure that it does not produce excessive shaking during rotation.

[0033] The upper end of the first rotating rod 2 extends through and above the testing platform 1. The upper end of the first rotating rod 2 is fixedly connected to the placement platform 3, and the first worm gear 21 is fixedly sleeved on the outside of the first rotating rod 2.

[0034] The inner bottom wall of the testing table 1 is fixedly installed with a first servo motor 22. The output shaft of the first servo motor 22 is fixedly installed with a first worm gear 23 through a coupling. The outer surface of the first worm gear 23 meshes with the tooth surface of the first worm wheel 21. The first servo motor 22 has the characteristics of fast response and precise control of speed and angle. The meshing performance between the first worm gear 23 and the first worm wheel 21 is good, which can realize efficient transmission.

[0035] The upper end of the testing table 1 is provided with an annular slide groove 24. The inner wall of the annular slide groove 24 is slidably connected with arc-shaped sliders 25 arranged in an annular array. The upper ends of the multiple arc-shaped sliders 25 are fixedly connected to the lower end of the placement table 3. The inner wall of the annular slide groove 24 is finely processed and has a smooth surface, which reduces the frictional resistance between the arc-shaped sliders 25 and the slide groove.

[0036] The placement platform 3 is equipped with a stable clamping mechanism inside.

[0037] The stabilizing clamping mechanism includes a second rotating rod 31. The lower end of the second rotating rod 31 is rotatably connected to the inner bottom wall of the placement platform 3 through a bearing. The lower end of the second rotating rod 31 is rotatably connected to the inner bottom wall of the placement platform 3 through a high-precision bearing to ensure smooth and stable rotation.

[0038] The second rotating rod 31 is externally fixedly sleeved with a second worm gear 32. The inner bottom wall of the placement platform 3 is fixedly installed with a second servo motor 33. The output shaft of the second servo motor 33 is fixedly installed with a second worm 34 through a coupling. The self-locking characteristic of the second worm 34 and the second worm gear 32 prevents the second rotating rod 31 from rotating under force.

[0039] The outer surface of the second worm 34 meshes with the tooth surface of the second worm wheel 32. The upper end of the placement platform 3 is provided with stroke grooves 35 arranged in a ring array. The inner wall of the stroke grooves 35 is finely machined and has a smooth surface, which reduces the frictional resistance between the moving rod 310 and the stroke groove. The inner bottom wall of the placement platform 3 is provided with limiting slide grooves 36 arranged in a ring array.

[0040] The inner wall of the limiting slide groove 36 is slidably connected to the limiting slider 37. The upper end of the second rotating rod 31 is fixedly connected to the rotating disk 38. The upper end of the rotating disk 38 is provided with inclined grooves 39 arranged in a ring array. The inner wall of the inclined groove 39 is slidably inserted with the moving rod 310. The angle and depth of the inclined groove 39 are precisely designed to ensure that the moving rod 310 can slide smoothly in it.

[0041] The lower end of the moving rod 310 is fixedly connected to the upper end of the limiting slider 37. The upper end of the moving rod 310 passes through the stroke groove 35 and extends to the top of the placement platform 3. An arc-shaped clamping block 311 is fixedly connected to the upper end of the moving rod 310. The diameter of the moving rod 310 is precisely calculated to meet the requirements of smooth movement in the stroke groove 35 and the inclined groove 39, and to ensure sufficient strength when clamping the bearing.

[0042] The upper end of the testing table 1 is fixedly connected to the mounting bracket 4. The upper end of the mounting bracket 4 is provided with a moving groove 5. A third servo motor 6 is fixedly installed on one side of the mounting bracket 4. The output shaft of the third servo motor 6 is fixedly installed with a lead screw 7 through a coupling. The inner wall of the moving groove 5 is finely machined and has a smooth surface, which reduces the frictional resistance between the threaded block 8 and the moving groove.

[0043] One end of the lead screw 7 passes through the mounting bracket 4 and is rotatably connected to the inner wall of one side of the moving groove 5 via a bearing. The lead screw 7 is externally threaded with a threaded block 8, and the outer side of the threaded block 8 is slidably connected to the inner wall of the moving groove 5. The lower end of the threaded block 8 is provided with a hardness testing mechanism body 9. The hardness testing mechanism body 9 adopts advanced testing technology and has the characteristics of high precision and high reliability. Its connection with the threaded block 8 is detachable, which is convenient for replacement and maintenance. The testing probe of the hardness testing mechanism body 9 is carefully designed to accurately test the hardness of the bearing.

[0044] The working process of this utility model:

[0045] Step 1: Place the bearing to be tested at the center above the placement platform 3, start the second servo motor 33 to drive the worm gear to rotate. The rotation of the worm gear drives the second rotating rod 31 and the rotating disk 38 to rotate through the meshing worm wheel. The rotation of the rotating disk 38 drives the moving rod 310 to move through the inclined groove 39. The movement of the moving rod 310 is limited by the limiting groove 36 and the limiting slider 37, so that the moving rod 310 drives the arc-shaped clamping block 311 to move stably along the stroke groove 35, thereby stably clamping the bearing.

[0046] Step 2: Start the third servo motor 6 to drive the lead screw 7 to rotate. The rotation of the lead screw 7 drives the hardness testing mechanism body 9 to move through the cooperation of the threaded block 8 and the moving groove 5, thereby moving it to a suitable position to test the hardness of the bearing.

[0047] Step 3: Start the first servo motor 22 to drive the first worm gear 23 to rotate. The rotation of the first worm gear 23 drives the placement platform 3 to rotate through the meshing worm wheel, thereby accurately controlling the rotation angle of the placement platform 3, facilitating testing of different bearing positions. Furthermore, the cooperation between the arc-shaped slider 25 and the annular groove 24 improves the stability of the placement platform 3 during rotation adjustment.

[0048] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A test bench for bearing testing, comprising a testing bench (1), characterized in that: The testing platform (1) is equipped with a rotating mechanism, which includes a first rotating rod (2). The lower end of the first rotating rod (2) is rotatably connected to the inner bottom wall of the testing platform (1) through a bearing. The upper end of the first rotating rod (2) extends through and to the top of the testing platform (1). The upper end of the first rotating rod (2) is fixedly connected to a placement platform (3). The outer side of the first rotating rod (2) is fixedly sleeved with a first worm gear (21). The inner bottom wall of the testing platform (1) is fixedly installed with a first servo motor (22). The output shaft of the first servo motor (22) is fixedly installed with a first worm (23) through a coupling. The outer surface of the first worm (23) meshes with the tooth surface of the first worm wheel (21). The upper end of the testing platform (1) is provided with an annular slide groove (24). The inner wall of the annular slide groove (24) is slidably connected with an arc-shaped slider (25) distributed in an annular array. The upper ends of the multiple arc-shaped sliders (25) are all fixedly connected to the lower end of the placement platform (3). The placement platform (3) is equipped with a stable clamping mechanism inside.

2. The test bench for bearing testing according to claim 1, characterized in that: The stabilizing clamping mechanism includes a second rotating rod (31), the lower end of which is rotatably connected to the inner bottom wall of the placement platform (3) via a bearing.

3. The test bench for bearing testing according to claim 2, characterized in that: The second rotating rod (31) is externally fixedly sleeved with a second worm gear (32), and the inner bottom wall of the placement platform (3) is fixedly installed with a second servo motor (33). The output shaft of the second servo motor (33) is fixedly installed with a second worm gear (34) through a coupling.

4. The test bench for bearing testing according to claim 3, characterized in that: The outer surface of the second worm (34) meshes with the tooth surface of the second worm wheel (32). The upper end of the placement platform (3) is provided with stroke grooves (35) arranged in a ring array. The inner bottom wall of the placement platform (3) is provided with limiting slide grooves (36) arranged in a ring array.

5. A test bench for bearing testing according to claim 4, characterized in that: The inner wall of the limiting groove (36) is slidably connected to the limiting slider (37), and the upper end of the second rotating rod (31) is fixedly connected to the rotating disk (38). The upper end of the rotating disk (38) is provided with inclined grooves (39) arranged in a ring array, and the inner wall of the inclined groove (39) is slidably inserted with a moving rod (310).

6. A test bench for bearing testing according to claim 5, characterized in that: The lower end of the moving rod (310) is fixedly connected to the upper end of the limiting slider (37). The upper end of the moving rod (310) passes through the stroke groove (35) and extends to the top of the placement platform (3). An arc-shaped clamping block (311) is fixedly connected to the upper end of the moving rod (310).

7. The test bench for bearing testing according to claim 1, characterized in that: The upper end of the testing platform (1) is fixedly connected to a mounting bracket (4), and the upper end of the mounting bracket (4) is provided with a moving groove (5). A third servo motor (6) is fixedly installed on one side of the mounting bracket (4), and a lead screw (7) is fixedly installed on the output shaft of the third servo motor (6) through a coupling.

8. A test bench for bearing testing according to claim 7, characterized in that: One end of the lead screw (7) passes through the mounting bracket (4) and is rotatably connected to the inner wall of the moving groove (5) via a bearing. The lead screw (7) is threadedly connected to a threaded block (8). The outer side of the threaded block (8) is slidably connected to the inner wall of the moving groove (5). The lower end of the threaded block (8) is provided with a hardness testing mechanism body (9).

Images