Magnet roller vibration test device and test method

Abstract

The invention relates to the technical field of vibration tests, in particular to a magnet roller vibration test device and method, and the device comprises a supporting structure, and a through hole is formed in the upper part of the supporting structure; a servo motor is arranged at the bottom of the supporting structure, a spline is arranged at the top of the servo motor, a fixing frame is arranged on the outer side of the servo motor, a driving shaft is connected to the other end of the spline, a switching table is arranged above the driving shaft, a commutator is connected to the other end of the switching table, a cam is arranged on one side of the commutator, and a material tank is arranged on the other side of the commutator. The material tank and the cam are located on the two sides of the through hole of the supporting structure respectively. According to the magnet roller vibration test device and test method provided by the invention, the orthogonal test table completes all tests of the combined working conditions of amplitude and rotating speed in sequence, and simulation software is adopted for reproduction verification, so that the scientific and reliable test method is finally formed, the test efficiency is improved, and the test cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of vibration testing technology, and in particular to a magnetic drum vibration testing device and method. Background Technology

[0002] With the rapid development of industries such as new energy vehicle drive motors, industrial energy-saving motors, and high-speed motors, obtaining sintered NdFeB magnets with high magnetic properties, high strength, and high toughness to ensure reliability and stability during high-speed operation has become an urgent need for the industry. Existing technologies for testing the mechanical properties of magnets under vibration environments have many shortcomings, such as the lack of systematic vibration testing equipment and methods, the inability to monitor the performance changes of magnets in real time during vibration, and the lack of quantitative data expression. These problems make it difficult to accurately assess the service life and reliability of magnets, affecting their application and optimized design.

[0003] There is a need to develop a method for testing the mechanical and brittle properties of magnets under vibration conditions, in order to comprehensively evaluate the mechanical properties and brittle characteristics of magnets, provide a scientific basis for the protective design of magnets, improvement of corner chipping problems, and optimization of material mechanical properties; the testing method should be able to simulate the actual use conditions of magnets, provide quantifiable performance evaluation results, and provide technical support for the quality control and performance improvement of magnets. Summary of the Invention

[0004] Technical objective: In order to overcome the shortcomings of the existing technology, the present invention provides a magnetic drum vibration testing device and testing method.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a magnetic roller vibration testing device and testing method, which includes a support structure, a through hole being opened at the top of the support structure; a servo motor is provided at the bottom of the support structure, a spline is provided at the top of the servo motor, a fixing frame is provided on the outside of the servo motor, a drive shaft is connected to the other end of the spline, a transfer platform is provided above the drive shaft, a commutator is connected to the other end of the transfer platform, a cam is provided on one side of the commutator, a material tank is provided on the other side of the commutator, and the material tank and the cam are respectively located on both sides of the through hole of the support structure.

[0006] Preferably, a rotating shaft is connected between the material tank and the commutator, the rotating shaft is coaxial with the material tank, a lid is provided at one end of the material tank, multiple sealing buckles are provided between the material tank and the lid, a handle is provided on the lid, and the inner wall of the material tank is smooth.

[0007] Preferably, an extension frame is provided on the side of the commutator facing the support structure, the extension frame is located inside the through hole of the support structure, a follower frame is provided below the cam, and a follower head is provided below the follower frame.

[0008] Preferably, the outer side of the support structure is provided with a side plate, the side plates on the outside of the two support structures are symmetrically arranged, a horizontal plate is provided above the side plate, and a mounting frame is provided above the horizontal plate. The follower head is rotatably connected to the mounting frame.

[0009] Preferably, the support structure has a pair of slide rails symmetrically arranged on both sides above one end of the material tank. The slide rails are located on both sides of the through hole on the support structure. Each slide rail is equipped with a slide seat, and a floating plate is arranged between the slide seats. One end of the floating plate is connected to the extension frame, and the rotating shaft passes through the floating plate. Multiple baffles are evenly arranged on the inner wall of the material tank.

[0010] Preferably, a first shock absorber is provided at the center of the top surface of the support structure, and a pair of shock absorber springs are provided below the first shock absorber, with the bottom end of the shock absorber springs connected to the top surface of the floating plate; a second shock absorber is provided at the center below one end of the extension frame, and a shock absorber spring is provided on the top surface of the second shock absorber, with the shock absorber spring fixed to the bottom end of the floating plate.

[0011] A test method based on a magnetic drum vibration test device includes:

[0012] Step 1: Sample preparation;

[0013] Step 2: Equipment debugging;

[0014] Step 3: Conduct the experiment;

[0015] Step 4: Sample post-processing and data collection;

[0016] Step 1 includes:

[0017] Step 101: Process different types of magnet samples according to specifications, including different coatings, different element contents, process states, etc., and remove surface burrs and oil stains;

[0018] Step 102: Weigh each sample initially using an electronic balance and record the number and sample type.

[0019] Preferably, step 2 includes:

[0020] Step 201: Preset the amplitude and rotation speed parameters according to the orthogonal test scheme, and run under no-load for 5 minutes;

[0021] Step 202: Use a laser tachometer and displacement sensor to calibrate the parameters to ensure that the speed deviation is ≤ ±3 rpm and the amplitude deviation is ≤ ±0.1 mm.

[0022] Step 203: Check the sealing performance of the equipment cover and the operational stability of the tank. After confirming that there are no abnormalities, proceed with the sample loading.

[0023] Preferably, step 3 includes:

[0024] Step 301: Place 10-20 parallel samples of the same type into the container and tighten the sealing cap;

[0025] Step 302: Start the equipment and run it for 10-20 minutes according to the preset parameters, monitor the equipment's operating status in real time, and record any abnormal situations;

[0026] Step 303: Complete the tests of all "amplitude + speed" combination conditions in sequence according to the orthogonal test table. Thoroughly clean the tank after each set of conditions is tested.

[0027] The design of the orthogonal experimental table includes:

[0028] Step 3011: Set the horizontal amplitude to 0mm~10mm, preferably 5-10mm;

[0029] Step 3012: Set the speed level to 100rpm-1500rpm, preferably 120-500rpm;

[0030] Step 3013: Use orthogonal experimental design to test different combinations of working conditions.

[0031] Preferably, step 4 includes:

[0032] Step 401: Remove the sample and clean any remaining debris from the surface;

[0033] Step 402: Weigh the final weight of the sample and calculate the weight loss rate;

[0034] Step 403: Observe the surface condition of the sample and record the relevant phenomena;

[0035] Step 404: Collect the residue, screen it, record the particle distribution, and compare the particle distribution curves.

[0036] Step 405: Simulation verification and process determination;

[0037] Step 406: Use the worst-case conditions (the working conditions with the highest weight loss rate and the most significant brittleness) selected from the orthogonal experiment for calculation and simulation;

[0038] Step 407: Use simulation software to reproduce the force, deformation, and corner damage process of the magnet under this condition;

[0039] Step 408: Based on the experimental data and simulation results, determine the final reliable process conditions for the magnet drum vibration test;

[0040] The formula for calculating the weight loss rate is as follows:

[0041] Weight loss rate = (m0-m1) / m0 × 100%

[0042] Where m0 is the initial weight of the sample and m1 is the final weight of the sample.

[0043] The beneficial effects of this invention are:

[0044] 1. This invention provides a magnetic drum vibration test device and test method. Through orthogonal experimental design, with amplitude and rotational speed as the core variables, it simulates the working state of the magnet in a vibration environment, overcoming the shortcomings of traditional bending strength test and compressive strength test, which can only evaluate static mechanical properties, and comprehensively evaluates the performance of the magnet under dynamic conditions.

[0045] 2. This invention provides a magnetic drum vibration testing device and method. By using a self-designed drum vibration testing machine with different amplitudes, combined with auxiliary equipment such as an electronic balance, laser tachometer, and displacement sensor, real-time monitoring and data acquisition of the magnet during the vibration process are realized, thereby improving the accuracy and reliability of the test.

[0046] 3. This invention provides a magnetic drum vibration testing device and method. It sequentially completes the testing of all "amplitude + speed" combination conditions through orthogonal test tables, and verifies the results using simulation software. Finally, a scientific and reliable testing method is formed, which improves testing efficiency and reduces testing costs.

[0047] 4. This invention provides a magnetic drum vibration testing device and method. Through a set of quantifiable magnetic brittleness testing methods, it provides technical support for evaluating the protection of magnetic coatings, improving corner chipping problems, optimizing different compositions, and enhancing the mechanical properties of blanks, which helps to improve the service life and reliability of magnets.

[0048] 5. This invention provides a magnetic drum vibration testing device and method. The brittle properties of the magnet are directly evaluated through a rotational vibration test of "amplitude + rotation speed". Combined with quantitative indicators such as weight loss rate and particle size distribution curve of corner-damaged particles after sieving, the degree of damage to the magnet can be judged more accurately, providing reliable data support for the quality control and performance improvement of the magnet. Attached Figure Description

[0049] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0050] Figure 1 This is a schematic diagram of the overall structure of the magnetic drum vibration testing device and testing method of the present invention;

[0051] Figure 2This is a rear view of a magnetic drum vibration testing device and method according to the present invention;

[0052] Figure 3 This is a right view of a magnetic drum vibration testing device and method according to the present invention;

[0053] Figure 4 This is a partial structural schematic diagram of a magnetic drum vibration testing device and testing method according to the present invention.

[0054] Explanation of reference numerals in the attached figures:

[0055] 1. Support structure; 11. Side plate; 12. Horizontal plate; 2. Servo motor; 21. Spline; 22. Fixing frame; 23. Drive shaft; 24. Transfer table; 3. Commutator; 31. Extension frame; 32. Cam; 33. Follower frame; 34. Follower head; 35. Mounting frame; 4. Slide rail; 41. Slide seat; 42. Floating plate; 43. First shock absorber frame; 44. Second shock absorber frame; 45. Shock absorber spring; 5. Material tank; 51. Tank cover; 52. Sealing buckle; 53. Handle; 54. Rotating shaft; 55. Stop bar. Detailed Implementation

[0056] The following is in conjunction with the appendix Figure 1 To be continued Figure 4 The principles and features of the present invention are described, and the examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0057] Please see Figures 1-4This invention provides a magnetic roller vibration testing device and method. The magnetic roller vibration testing device includes a support structure 1 with a through hole at its top. A servo motor 2 is mounted at the bottom of the support structure 1, and a spline 21 is mounted at the top of the servo motor 2. A fixing frame 22 is mounted on the outside of the servo motor 2. A drive shaft 23 is connected to the other end of the spline 21. A transition platform 24 is mounted above the drive shaft 23, and a commutator 3 is connected to the other end of the transition platform 24. A cam 32 is mounted on one side of the commutator 3, and a material tank 5 is mounted on the other side of the commutator 3. The material tank 5 and the cam 32 are located on opposite sides of the through hole in the support structure 1. The space above the support structure 1 is divided. The servo motor 2 is fixed to the support structure 1 via the fixing frame 22, and the spline 21 passes through the fixing frame 22. Machine 2 drives drive shaft 23 to rotate, which in turn drives spline 21 and transfer table 24 to rotate synchronously. The commutator 3 reverses the rotation of transfer table 24 by 90 degrees, thereby driving cam 32 to rotate. The rotation of cam 32 drives material tank 5 to rotate. Material tank 5 and tank cover 51 are made of stainless steel and are demagnetized as a whole. The inner surface of material tank 5 is treated with anti-corrosion and nitriding to make the hardness of the material greater than that of the magnet to be tested. When the rotation speed of material tank 5 is set to 0-1500rpm, the amplitude can be continuously adjusted from 0-10mm. Servo motor 2 reverses the rotation of the drum by 90 degrees through commutator 3. The speed is adjusted in real time through driver. The speed of servo motor 2 is related to the vibration frequency. The vibration amplitude is adjusted by changing cam 32. The eccentricity of cam 32 is related to the vibration amplitude.

[0058] Please see Figures 1-4 A rotating shaft 54 ​​connects the material tank 5 and the commutator 3. The rotating shaft 54 ​​is coaxial with the material tank 5. A lid 51 is provided at one end of the material tank 5. Multiple sealing buckles 52 are provided between the material tank 5 and the lid 51. A handle 53 is provided on the lid 51. The inner wall of the material tank 5 is smooth, and multiple baffles 55 are evenly arranged on the inner wall of the material tank 5. The commutator 3 drives the servo motor 2 to drive the rotating shaft 54 ​​to rotate, so that the rotating shaft 54 ​​drives the material tank 5 to rotate. The sealing buckles 52 seal the material tank 5 and the lid 51. The handle 53 facilitates the installation and removal of the lid 51. The material tank 5 has removable baffles 55 inside, which facilitates the replacement of baffles 55 of different sizes.

[0059] Please see Figures 1-4 An extension frame 31 is provided on the side of the commutator 3 facing the support structure 1. The extension frame 31 is located inside the through hole of the support structure 1. A follower frame 33 is provided below the cam 32, and a follower head 34 is provided below the follower frame 33. The rotation of the cam 32 drives the follower frame 33 below the cam 32 to move synchronously, and the follower frame 33 simultaneously drives the follower head 34 to move.

[0060] Please see Figures 1-4The feature is that: a side plate 11 is provided on the outer side of the support structure 1, and the side plates 11 on both sides of the support structure 1 are symmetrically arranged. A horizontal plate 12 is provided above the side plate 11, and a mounting frame 35 is provided above the horizontal plate 12. The follower head 34 is rotatably connected to the mounting frame 35. The mounting frame 35 is fixed by the horizontal plate 12, so that the follower head 34 and the mounting frame 35 can move relative to each other. The cam 32 cooperates with the follower head 34 and the mounting frame 35 to realize that the cam 32 rotates and moves up and down at the same time, thereby realizing the high-frequency up and down vibration of the material tank 5. The material tank 5 vibrates inside the through hole on the support structure 1. During vibration, the spline 21 also moves up and down, so that the servo motor 2 can continuously transmit power.

[0061] Please see Figures 1-4 The support structure 1 has a pair of slide rails 4 symmetrically arranged on both sides above one end of the material tank 5. The slide rails 4 are located on both sides of the through hole on the support structure 1. Each slide rail 4 is provided with a slide seat 41. A floating plate 42 is arranged between the slide seats 41. One end of the floating plate 42 is connected to the extension frame 31. The rotating shaft 54 ​​passes through the floating plate 42. Multiple baffles 55 are evenly arranged on the inner wall of the material tank 5. When the material tank 5 vibrates up and down at high frequency, it drives the floating plate 42 to move synchronously and moves within the range of the slide rails 4 through the slide seats 41. The rotating shaft 54 ​​can rotate independently while passing through the floating plate 42. The rotating shaft 54 ​​can drive the rotating shaft 54 ​​to rotate, while the driving cam 32 drives the floating plate 42 to vibrate up and down at high frequency, thereby realizing the synchronous rotation and vibration of the material tank 5.

[0062] Please see Figures 1-4 A first shock absorber 43 is provided at the center of the top surface of the support structure 1. A pair of shock absorber springs 45 are provided below the first shock absorber 43. The bottom end of the shock absorber springs 45 is connected to the top surface of the floating plate 42. A second shock absorber 44 is provided at the center of the bottom of one end of the extension frame 31. A shock absorber spring 45 is provided on the top surface of the second shock absorber 44. The shock absorber springs 45 are fixed to the bottom end of the floating plate 42. Through the shock absorber springs 45 above and below the floating plate 42, when the floating plate 42 vibrates, the shock absorber springs 45 prevent the floating plate 42 from vibrating additionally, so that the device remains horizontal.

[0063] A method for testing the vibration of a magnetic drum includes:

[0064] Step 1: Sample preparation;

[0065] Step 2: Equipment debugging;

[0066] Step 3: Conduct the experiment;

[0067] Step 4: Sample post-processing and data collection;

[0068] Step 1 includes:

[0069] Step 101: Process different types of magnet samples according to specifications, including different coatings, different element contents, process states, etc., and remove surface burrs and oil stains;

[0070] Step 102: Weigh each sample initially using an electronic balance and record the number and sample type.

[0071] Step 2 includes:

[0072] Step 201: Preset the amplitude and rotation speed parameters according to the orthogonal test scheme, and run under no-load for 5 minutes;

[0073] Step 202: Use a laser tachometer and displacement sensor to calibrate the parameters to ensure that the speed deviation is ≤ ±3 rpm and the amplitude deviation is ≤ ±0.1 mm.

[0074] Step 203: Check the sealing performance of the equipment cover and the operational stability of the tank. After confirming that there are no abnormalities, proceed with the sample loading.

[0075] Step 3 includes:

[0076] Step 301: Place 10-20 parallel samples of the same type into the container and tighten the sealing cap;

[0077] Step 302: Start the equipment and run it for 10-20 minutes according to the preset parameters, monitor the equipment's operating status in real time, and record any abnormal situations;

[0078] Step 303: Complete the tests of all "amplitude + speed" combination conditions in sequence according to the orthogonal test table. Thoroughly clean the tank after each set of conditions is tested.

[0079] The design of the orthogonal experimental table includes:

[0080] Step 3011: Set the horizontal amplitude to 0mm~10mm, preferably 5-10mm;

[0081] Step 3012: Set the speed level to 100rpm-1500rpm, preferably 120-500rpm;

[0082] Step 3013: Use orthogonal experimental design to test different combinations of working conditions.

[0083] Step 4 includes:

[0084] Step 401: Remove the sample and clean any remaining debris from the surface;

[0085] Step 402: Weigh the final weight of the sample and calculate the weight loss rate;

[0086] Step 403: Observe the surface condition of the sample and record the relevant phenomena;

[0087] Step 404: Collect the residue, screen it, record the particle distribution, and compare the particle distribution curves.

[0088] Step 405: Simulation verification and process determination;

[0089] Step 406: Use the worst-case conditions (the working conditions with the highest weight loss rate and the most significant brittleness) selected from the orthogonal experiment for calculation and simulation;

[0090] Step 407: Use simulation software to reproduce the force, deformation, and corner damage process of the magnet under this condition;

[0091] Step 408: Based on the experimental data and simulation results, determine the final reliable process conditions for the magnet drum vibration test;

[0092] The formula for calculating the weight loss rate is as follows:

[0093] Weight loss rate = (m0-m1) / m0 × 100%

[0094] Where m0 is the initial weight of the sample and m1 is the final weight of the sample.

[0095] By using a vibratory roller testing machine, different speeds, amplitudes, and durations were set. Using finished-size square and cylindrical samples, 10 pieces from each batch were subjected to a vibratory roller and drop test within a smooth roller. Weight, appearance, and dimensions before and after the test were recorded using an analytical balance (accurate to 0.1 mg). The test results are shown in the table below.

[0096] Table 1: Example Data

[0097]

[0098]

[0099] Table 2: Comparative Experiment Data

[0100]

[0101]

[0102] Analysis of experimental results:

[0103] The results of testing at 600 rpm using existing technology show that the sample weight loss rate is small, making it impossible to distinguish the weight loss rate of small products. Comparing results at other speeds and with the same amplitude, at speeds below 90 rpm, the sample is at the bottom of the drum, where the friction force is greater than the centrifugal force, and the sample does not collide or fall, thus failing to achieve the test objective. When the vibration time is less than 5 minutes, the number of collisions and falls of the sample is too few, resulting in a too small sample weight loss rate, which also fails to achieve the test objective.

[0104] During use, the first step is to initialize the system parameters, setting the roller speed, amplitude, and drop angle; the roller speed range is set to 0-1500 rpm via the controller, and the maximum amplitude of the amplitude adjustment mechanism is set to 10 mm. The second step is to place the specimen inside the roller and start the vibration system; the motor is started to make the roller rotate, and the amplitude cam structure is adjusted to increase the amplitude of the roller vibration. The third step is to monitor the vibration status in real time, using sensors to monitor the roller speed and amplitude in real time, and determine whether the monitoring data is within the preset range. If it exceeds the preset range, the system parameters are adjusted and the process returns to the first step; if it is normal, the fourth step is executed. The fourth step is to record the number of drops and the damage condition of the specimen, setting a counter to record the number of drops, using an image recognition system to detect the damage condition of the specimen, and uploading the recorded data to the control system.

[0105] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A magnetic drum vibration testing device, comprising a support structure (1), characterized in that: A through hole is opened on the top of the support structure (1); a servo motor (2) is provided at the bottom of the support structure (1), a spline (21) is provided at the top of the servo motor (2), a fixing frame (22) is provided on the outside of the servo motor (2), a drive shaft (23) is connected to the other end of the spline (21), a transfer table (24) is provided above the drive shaft (23), a commutator (3) is connected to the other end of the transfer table (24), a cam (32) is provided on one side of the commutator (3), a material tank (5) is provided on the other side of the commutator (3), and the material tank (5) and the cam (32) are located on both sides of the through hole of the support structure (1).

2. The magnetic drum vibration testing device according to claim 1, characterized in that: A rotating shaft (54) is connected between the material tank (5) and the commutator (3). The rotating shaft (54) is coaxial with the material tank (5). A lid (51) is provided at one end of the material tank (5). Multiple sealing buckles (52) are provided between the material tank (5) and the lid (51). A handle (53) is provided on the lid (51). The inner wall of the material tank (5) is smooth.

3. The magnetic drum vibration testing device according to claim 2, characterized in that: The commutator (3) has an extension frame (31) on the side facing the support structure (1). The extension frame (31) is located inside the through hole of the support structure (1). A follower frame (33) is provided below the cam (32), and a follower head (34) is provided below the follower frame (33).

4. The magnetic drum vibration testing device according to claim 3, characterized in that: The support structure (1) is provided with a side plate (11) on the outside. The side plates (11) on both sides of the support structure (1) are symmetrically arranged. A horizontal plate (12) is provided above the side plate (11). A mounting bracket (35) is provided above the horizontal plate (12). The follower head (34) is rotatably connected to the mounting bracket (35).

5. The magnetic drum vibration testing device according to claim 4, characterized in that: The support structure (1) has a pair of slide rails (4) symmetrically arranged on both sides above one end of the material tank (5). The slide rails (4) are located on both sides of the through hole on the support structure (1). Each slide rail (4) is provided with a slide seat (41). A floating plate (42) is arranged between the slide seats (41). One end of the floating plate (42) is connected to the extension frame (31). The rotating shaft (54) passes through the floating plate (42). Multiple baffles (55) are evenly arranged on the inner wall of the material tank (5).

6. The magnetic drum vibration testing device according to claim 5, characterized in that: The support structure (1) has a first shock absorber (43) at the center of its top surface, and a pair of shock absorber springs (45) are provided below the first shock absorber (43). The bottom end of the shock absorber springs (45) is connected to the top surface of the floating plate (42). The extension frame (31) has a second shock absorber (44) at the center of its lower end, and a shock absorber spring (45) is provided on the top surface of the second shock absorber (44). The shock absorber springs (45) are fixed to the bottom end of the floating plate (42).

7. A method for testing the vibration of a magnetic drum based on any one of claims 1-6, characterized in that: include: Step 1: Sample preparation; Step 2: Equipment debugging; Step 3: Conduct the experiment; Step 4: Sample post-processing and data collection; Step 1 includes: Step 101: Process different types of magnet samples according to specifications; Step 102: Weigh each sample initially using an electronic balance and record the number and sample type.

8. The method for testing the vibration of a magnetic drum according to claim 7, characterized in that: Step 2 includes: Step 201: Preset the amplitude and rotation speed parameters according to the orthogonal test scheme, and run under no-load for 5 minutes; Step 202: Use a laser tachometer and displacement sensor to calibrate the parameters to ensure that the speed deviation is ≤ ±3 rpm and the amplitude deviation is ≤ ±0.1 mm; Step 203: Check the sealing performance of the equipment cover and the operational stability of the tank. After confirming that there are no abnormalities, proceed with the sample loading.

9. The method for testing the vibration of a magnetic drum according to claim 8, characterized in that: Step 3 includes: Step 301: Place 10-20 parallel samples of the same type into the container and tighten the sealing cap; Step 302: Start the equipment and run it for 10-20 minutes according to the preset parameters, monitor the equipment's operating status in real time, and record any abnormal situations; Step 303: Complete the tests of all "amplitude + speed" combination conditions in sequence according to the orthogonal test table. Thoroughly clean the tank after each set of conditions is tested. The design of the orthogonal experimental table includes: Step 3011: Set the horizontal amplitude to 0mm~10mm, preferably 5-10mm; Step 3012: Set the speed level to 100rpm-1500rpm, preferably 120-500rpm; Step 3013: Use orthogonal experimental design to test different combinations of working conditions.

10. A method for testing the vibration of a magnetic drum according to claim 8, characterized in that: Step 4 includes: Step 401: Remove the sample and clean any remaining debris from the surface; Step 402: Weigh the final weight of the sample and calculate the weight loss rate; Step 403: Observe the surface condition of the sample and record the relevant phenomena; Step 404: Collect the residue, screen it, record the particle distribution, and compare the particle distribution curves. Step 405: Simulation verification and process determination; Step 406: Use the worst-case conditions (the working conditions with the highest weight loss rate and the most significant brittleness) selected from the orthogonal experiment for calculation and simulation; Step 407: Use simulation software to reproduce the force, deformation, and corner damage process of the magnet under this condition; Step 408: Based on the experimental data and simulation results, determine the final reliable process conditions for the magnet drum vibration test; The formula for calculating the weight loss rate is as follows: Weight loss rate = (m0-m1) / m0 × 100% Where m0 is the initial weight of the sample and m1 is the final weight of the sample.

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