Bearing rolling abnormal sound detection device

Abstract

The utility model discloses a bearing rolling abnormal sound detection device, including support station, first three jaw chuck, second three jaw chuck, linear slide module, place board, hollow rotating platform, first three jaw chuck fixedly located support station top, and the bottom fixed of support station is equipped with first motor, and first motor is connected with first three jaw chuck transmission, linear slide module is placed vertically, and linear slide module is located the back of first three jaw chuck, and place board slip connection is in the front side of linear slide module, hollow rotating platform fixedly connected in place board, and hollow rotating platform is located the top of first three jaw chuck, and second three jaw chuck rotation is connected in the bottom of hollow rotating platform, the utility model discloses have simple structure, convenient operation, the advantage that rotation is stable.

Description

Technical Field

[0001] This utility model relates to the field of bearing testing, and in particular to a bearing rolling noise detection device. Background Technology

[0002] Abnormal noises (sounds) in bearings are one of the key indicators for judging their quality. This is not only a key indicator for measuring the quality of bearings, but also directly related to the noise level and user experience of the whole machine (such as motors, home appliances, automobiles, precision instruments, etc.) that uses the bearing.

[0003] Abnormal sounds from bearings often indicate internal defects or abnormal conditions, such as: manufacturing defects, scratches, dents, burrs, etc. on the rolling elements (steel balls or rollers) and raceway surfaces; cleanliness issues, such as dust, metal shavings, and other contaminants inside; and lubrication issues, such as impure grease, improper filling, or deterioration.

[0004] Noise detection in bearing factories is typically performed on specialized noise detection equipment, and mainly includes: Sensor connection: The inner ring of the bearing is fixed, and the outer ring is driven by a drive wheel clamped under a specific load to rotate at a set speed. One sound sensor is used to collect air noise during bearing operation; one vibration sensor is used to collect mechanical vibration during bearing operation. Signal Acquisition and Analysis: The sound and vibration signals acquired by the sensors are amplified and transmitted to the analyzer. The analyzer separates the signals into different frequency bands using a bandpass filter; Judgment criteria: The analyzer calculates the effective value (RMS) of the signal for each frequency band and compares it with the preset pass / fail threshold.

[0005] If the noise or vibration level in any frequency band exceeds the threshold, the instrument will determine that the bearing is "non-compliant with abnormal noise" and automatically sort it out.

[0006] Operators sometimes wear listening headphones to manually re-evaluate bearings that the instrument has judged as unqualified in order to confirm the type of defect.

[0007] However, its structure is complex and its cost is high. Therefore, there is an urgent need for an automated bearing noise detection device with a simple structure, low cost, and accurate and reliable detection results. Utility Model Content

[0008] The purpose of this invention is to provide a bearing rolling noise detection device, which has the advantages of simple structure, convenient operation and stable rotation.

[0009] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A bearing rolling noise detection device includes a support platform, a first three-jaw chuck, a second three-jaw chuck, a linear slide module, a placement plate, and a hollow rotary platform. The first three-jaw chuck is fixedly located on the top of the support platform, and a first motor is fixedly installed at the bottom of the support platform. The first motor is connected to the first three-jaw chuck in a transmission connection. The linear slide module is placed vertically and is located directly behind the first three-jaw chuck. The placement plate is slidably connected to the front side of the linear slide module. The hollow rotating platform is fixedly snapped into the placement plate, and the hollow rotating platform is located directly above the first three-jaw chuck. The second three-jaw chuck is rotatably connected to the bottom of the hollow rotating platform.

[0010] The preferred solution is as follows: Preferably, the first three-jaw chuck includes three first jaws, the upper end of each first jaw is stepped, and each first jaw includes a first step and a second step from top to bottom. Two-thirds of the inner ring of the bearing is placed at the top of the first step, and the side corresponding to the inner diameter of the bearing abuts against the side of the corresponding first step near the center of the first three-jaw chuck.

[0011] Preferably, an acoustic sensor is fixedly installed at each of the second steps, and each of the acoustic sensors is electrically connected to a host computer.

[0012] Preferably, the side of the first step of each first claw that abuts against the bearing is arc-shaped.

[0013] Preferably, the placement plate is placed horizontally, and a circular through hole is provided on the top of the placement plate. The hollow rotating platform is inserted into the circular through hole and is fixedly connected to the top of the placement plate.

[0014] Preferably, the second three-jaw chuck is rotatably connected to the bottom of the hollow rotary platform, and a second motor is fixedly installed on the top of the second three-jaw chuck; The second three-jaw chuck includes three second jaws, and the second motor is drivenly connected to the three second jaws.

[0015] Preferably, a rubber pad is fixedly provided on the side of each second jaw facing the center of the second three-jaw chuck, and the side of each rubber pad facing the center of the second three-jaw chuck is arc-shaped.

[0016] In summary, this utility model has the following beneficial effects: 1. The arrangement of the first three-jaw chuck and the three first jaws can fix the inner ring of the bearing without hindering the rotation of the outer ring of the bearing; 2. The hollow rotating platform, the second and third jaw chucks, and the three second jaws can fix the outer ring of the bearing and drive the outer ring of the bearing to rotate. 3. By setting up the linear slide module and the placement plate, it can achieve the effect of raising and lowering the hollow rotary platform and the second and third jaw chuck. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the embodiment placed on a table; Figure 2 This is a schematic diagram of the overall structural design of the embodiment; Figure 3 This is an exploded view of a portion of the structure of an embodiment.

[0018] In the diagram, 1. Support platform; 2. First three-jaw chuck; 3. Second three-jaw chuck; 4. Linear slide module; 5. Placement plate; 6. Hollow rotary platform; 7. First motor; 8. First jaw; 9. Acoustic sensor; 10. Host computer; 11. Second motor; 12. Second jaw; 13. Rubber pad; 811. First step; 812. Second step. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings.

[0020] Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings.

[0021] A bearing rolling noise detection device, such as Figures 1-3 As shown, it includes a support platform 1, a first three-jaw chuck 2, a second three-jaw chuck 3, a linear slide module 4, a placement plate 5, and a hollow rotary platform 6. Among them, the support platform 1 is fixedly located on the top of the table, and the host computer 10 is also placed on the top of the table. The host computer 10 is used to confirm the model of the bearing being tested, so as to control the displacement distance when the first three-jaw chuck 2 expands, the lifting distance of the linear slide module 4, and the displacement distance when the second three-jaw chuck 3 grips. A first three-jaw chuck 2 is fixedly located on the top of a support platform 1. A first motor 7 is fixedly installed at the bottom of the support platform 1. The first motor 7 is connected to the first three-jaw chuck 2. The first three-jaw chuck 2 includes three first jaws 8. The upper end of each first jaw 8 is stepped. Each first jaw 8 includes a first step 811 and a second step 812 from top to bottom. Two-thirds of the inner ring of the bearing is placed on the top of the first step 811. The side corresponding to the inner diameter of the bearing abuts against the side of the corresponding first step 811 closest to the center of the first three-jaw chuck 2. The first motor 7 drives the three first jaws 8 of the first three-jaw chuck 2 to move, thereby abutting against the inner ring of the bearing and achieving the effect of fixing the bearing. Similarly, the side of the first step 811 of each first jaw 8 that abuts against the bearing is arc-shaped. The arc shape can reduce the contact area, increase the pressure, facilitate the fixing of the bearing, and also accommodate bearings of various sizes.

[0022] An acoustic sensor 9 is fixedly installed at each of the second steps 812, and each acoustic sensor 9 is electrically connected to a host computer 10. The acoustic sensor 9 is used to receive the sound transmitted when the bearing rotates and upload it to the host computer 10. The host computer 10 performs sound processing and comparison to determine whether there is a defect in the bearing.

[0023] The linear slide module 4 is placed vertically and is located directly behind the first three-jaw chuck 2. The placement plate 5 is slidably connected to the front side of the linear slide module 4. The hollow rotating platform 6 is fixedly attached to the placement plate 5. The hollow rotating platform 6 is located directly above the first three-jaw chuck. The hollow rotating platform 6 is existing technology and will not be described in detail here. The second three-jaw chuck 3 is rotatably connected to the bottom of the hollow rotating platform 6.

[0024] The placement plate 5 is placed horizontally, and a circular perforation is opened at the top of the placement plate 5. The hollow rotating platform 6 is inserted into the circular perforation and is fixedly connected to the top of the placement plate 5.

[0025] The second three-jaw chuck 3 is rotatably connected to the bottom of the hollow rotary platform 6, and the top of the second three-jaw chuck 3 is fixedly equipped with a second motor 11; The second three-jaw chuck 3 includes three second jaws 12, and the second motor 11 is connected to the three second jaws 12 in a transmission connection.

[0026] Each second jaw 12 has a rubber pad 13 fixedly installed on the side facing the center of the second three-jaw chuck 3, and the side of each rubber pad 13 facing the center of the second three-jaw chuck 3 is arc-shaped.

[0027] Specific implementation process: Step 1: The operator inputs the model number of the bearing to be tested into the host computer 10; Step 2: Control the first motor 7 to work through the host computer 10, drive the three first jaws 8 of the first three-jaw chuck 2 to move away from the center, so that the diameter of the circle formed by the first step 811 of the three first jaws 8 and the side of the bearing that abuts is nine-tenths of the inner diameter of the bearing. Step 3: The operator places the bearing onto the three first jaws 8 of the first three-jaw chuck 2, with two-thirds of the inner ring of the bearing placed on the top of the first step 811. The host computer 10 controls the first motor 7 to work, which continues to drive the three first jaws 8 of the first three-jaw chuck 2 to move away from the center. The arc-shaped part of the first step 811 of each first claw 8 abuts against the side wall corresponding to the inner diameter of the bearing, thus fixing the bearing. Step 4: Control the second motor 11 through the host computer 10 to drive the three second jaws 12 of the second three-jaw chuck 3 to move away from the center. Step 5: Control the linear slide module 4 through the host computer 10 to drive the hollow rotary platform 6 and the second three-jaw chuck 3 to descend; Step 6: Control the second motor 11 through the host computer 10 to drive the three second jaws 12 of the second three-jaw chuck 3 to move towards the center; The rubber pad 13 of each second claw 12 abuts against the side wall corresponding to the outer diameter of the bearing; Step 7: The host computer 10 controls the hollow rotating platform 6 to work, driving the outer ring of the bearing to rotate. Each acoustic sensor 9 sends the received signal to the host computer 10, which then compares and judges the signal. Step 8: Testing complete; Hollow rotating platform 6 has stopped working; The host computer 10 controls the second motor 11 to work, driving the three second jaws 12 of the second three-jaw chuck 3 to move away from the center. The host computer 10 controls the linear slide module 4 to work, which drives the hollow rotary platform 6 and the second three-jaw chuck 3 to rise. The host computer 10 controls the first motor 7 to work, driving the three first jaws 8 of the first three-jaw chuck 2 to move towards the center of the circle; Remove the bearing.

[0028] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A bearing rolling noise detection device, characterized in that: Includes a support platform (1), a first three-jaw chuck (2), a second three-jaw chuck (3), a linear slide module (4), a placement plate (5), and a hollow rotary platform (6); The first three-jaw chuck (2) is fixedly located on the top of the support platform (1), and the bottom of the support platform (1) is fixedly provided with a first motor (7), which is connected to the first three-jaw chuck (2) in a transmission connection. The linear slide module (4) is placed vertically and is located directly behind the first three-jaw chuck (2). The placement plate (5) is slidably connected to the front side of the linear slide module (4). The hollow rotating platform (6) is fixedly attached to the placement plate (5). The hollow rotating platform (6) is located directly above the first three-jaw chuck (2). The second three-jaw chuck (3) is rotatably connected to the bottom of the hollow rotating platform (6).

2. The bearing rolling noise detection device according to claim 1, characterized in that: The first three-jaw chuck (2) includes three first jaws (8). The upper end of each first jaw (8) is stepped. Each first jaw (8) includes a first step (811) and a second step (812) from top to bottom. Two-thirds of the inner ring of the bearing is placed on the top of the first step (811). The side corresponding to the inner diameter of the bearing abuts against the side of the corresponding first step (811) near the center of the first three-jaw chuck (2).

3. The bearing rolling noise detection device according to claim 2, characterized in that: An acoustic sensor (9) is fixedly provided at each of the second steps (812), and each of the acoustic sensors (9) is electrically connected to a host computer (10).

4. The bearing rolling noise detection device according to claim 3, characterized in that: The first step (811) of each of the first claws (8) is arc-shaped on the side that abuts against the bearing.

5. The bearing rolling noise detection device according to claim 4, characterized in that: The placement plate (5) is placed horizontally, and a circular perforation is provided on the top of the placement plate (5). The hollow rotating platform (6) is inserted into the circular perforation and is fixedly connected to the top of the placement plate (5).

6. The bearing rolling noise detection device according to claim 5, characterized in that: The second three-jaw chuck (3) is rotatably connected to the bottom of the hollow rotating platform (6), and the top of the second three-jaw chuck (3) is fixedly provided with a second motor (11). The second three-jaw chuck (3) includes three second jaws (12), and the second motor (11) is connected to the three second jaws (12) in a transmission connection.

7. The bearing rolling noise detection device according to claim 6, characterized in that: Each of the second jaws (12) has a rubber pad (13) fixedly provided on the side facing the center of the second three-jaw chuck (3), and the side of each rubber pad (13) facing the center of the second three-jaw chuck (3) is arc-shaped.

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