Permanent magnet testing device for rare earth permanent magnet sintered neodymium iron boron

Abstract

The utility model relates to the field of magnetic detection, and discloses a permanent magnet testing device for rare earth permanent magnet sintered NdFeB, which comprises a support frame, and a top frame is fixedly arranged at the top of the support frame; the testing mechanism is arranged on the supporting frame and the top frame; the testing mechanism comprises a testing assembly and a switching assembly; the testing assembly comprises a power motor, a power shaft, a rotating disc, a rare earth permanent magnet sintered neodymium iron boron placing barrel, a sleeve disc, a positioning block and a testing machine, the power motor is fixedly installed at the top of the top frame, the output end of the power motor is fixedly connected with the power shaft, and the sleeve disc fixedly sleeves the outer side of the power shaft; and the rare earth permanent magnet sintered neodymium iron boron placing cylinder is fixedly mounted at the top end of the turntable. The utility model has the following advantages and effects: a worker does not need to continuously limit and release the limit on the rare earth permanent magnet sintered neodymium iron boron, and the operation is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic detection, and particularly relates to a permanent magnet testing device for sintered neodymium iron boron of rare earth permanent magnets. Background Art

[0002] The neodymium iron boron permanent magnet is a kind of neodymium iron boron magnetic material, and it is also the latest result of the development of rare earth permanent magnet materials. The neodymium iron boron permanent magnet is divided into two types: sintered neodymium iron boron and bonded neodymium iron boron. The bonded neodymium iron boron has magnetism in all directions, and permanent magnet testing is required before sintering the neodymium iron boron.

[0003] In the prior art, the publication number CN212301832U discloses a magnetic property testing device for rare earth permanent magnet neodymium iron boron, which includes a substrate, a spring, an extension rod, a pointer plate sleeve and a fixing block.

[0004] When in use, it is necessary to put the sintered neodymium iron boron of rare earth permanent magnet into the fixing groove, then rotate the rotating handle, limit the sintered neodymium iron boron of rare earth permanent magnet through the top block, and then test the limited sintered neodymium iron boron of rare earth permanent magnet. After the test is completed, the limit of the sintered neodymium iron boron of rare earth permanent magnet is released and taken off. This method is more suitable for testing a small amount of sintered neodymium iron boron of rare earth permanent magnet. However, for testing a large number of sintered neodymium iron boron of rare earth permanent magnet of the same specification, this method requires the staff to continuously perform the operations of limiting and releasing the limit, and the labor intensity of the staff is relatively high. In addition, the testing efficiency is also relatively low. Therefore, it is necessary to design a permanent magnet testing device for sintered neodymium iron boron of rare earth permanent magnet to solve the above problems.

[0005] The information disclosed in this background art section is only intended to enhance the overall understanding of the present utility model and should not be regarded as an admission or any form of suggestion that this information constitutes the prior art already known to those of ordinary skill in the art. Summary of the Utility Model

[0006] The purpose of the present utility model is to provide a permanent magnet testing device for sintered neodymium iron boron of rare earth permanent magnet to solve the above problems.

[0007] The above technical purpose of the present utility model is achieved through the following technical solutions: A permanent magnet testing device for sintered neodymium iron boron of rare earth permanent magnet, comprising:

[0008] A support frame, on the top of which a top frame is fixedly arranged;

[0009] A testing mechanism, which is arranged on the support frame and the top frame;

[0010] The testing mechanism includes a testing component and a switching component;

[0011] The test component includes a power motor, a power shaft, a turntable, a rare earth permanent magnet sintered NdFeB placement cylinder, a sleeve disc, a positioning block, and a testing machine. The power motor is fixedly installed on the top of the top frame. The output end of the power motor is fixedly connected to the power shaft. The sleeve disc is fixedly sleeved outside the power shaft. The rare earth permanent magnet sintered NdFeB placement cylinder is fixedly installed on the top of the turntable. The rare earth permanent magnet sintered NdFeB is placed in the rare earth permanent magnet sintered NdFeB placement cylinder. The positioning block is fixedly installed on the top of the turntable. A plurality of positioning grooves are formed at the bottom end of the sleeve disc. The positioning block is clamped with the positioning grooves. The testing machine is fixedly installed at the bottom of the top frame;

[0012] The switching component includes a reinforcing brace, a synchronous hydraulic cylinder, and a support disc. The reinforcing brace is installed on the support frame. The synchronous hydraulic cylinder is fixedly installed on the top of the reinforcing brace. The hydraulic rod of the synchronous hydraulic cylinder is fixedly connected to the support disc. A blanking hole is formed at the top end of the support disc.

[0013] A further setting of the present utility model is that: four bottom holes are formed at the top end of the turntable, and the bottom end of the rare earth permanent magnet sintered NdFeB extends into the bottom holes.

[0014] A further setting of the present utility model is that: the bottom end of the rare earth permanent magnet sintered NdFeB is in contact with the support disc, and the blanking hole is communicated with one of the bottom holes.

[0015] By adopting the above technical solution, the rare earth permanent magnet sintered NdFeB can be supported and limited.

[0016] A further setting of the present utility model is that: an alarm is installed at the bottom of the top frame, a controller is installed at the rear side of the top frame, and the testing machine and the alarm are both electrically connected to the controller.

[0017] A further setting of the present utility model is that: balls are installed at the bottom end of the turntable in a rolling manner, a ball groove is formed at the top end of the support disc, and the balls are in rolling contact with the inner wall of the ball groove.

[0018] By adopting the above technical solution, it is convenient for the turntable to rotate on the support disc.

[0019] A further setting of the present utility model is that: the top end of the turntable is in contact with the sleeve disc.

[0020] By adopting the above technical solution, the turntable can be limited.

[0021] A further setting of the present utility model is that: a circular hole is formed at the top end of the support disc, and the bottom end of the power shaft penetrates through the circular hole.

[0022] A further setting of the present utility model is that: the top end of the support disc is in contact with the turntable.

[0023] The beneficial effect of the present utility model is:

[0024] With the testing mechanism provided by the present utility model, when performing permanent magnet testing on rare earth permanent magnet sintered NdFeB of the same specification in a batch, start the power motor to rotate the rare earth permanent magnet sintered NdFeB placing cylinder, and then place the rare earth permanent magnet sintered NdFeB into the rare earth permanent magnet sintered NdFeB placing cylinder. When the rare earth permanent magnet sintered NdFeB rotates to below the testing machine, the permanent magnet testing of the rare earth permanent magnet sintered NdFeB can be carried out. After the testing is completed, the rare earth permanent magnet sintered NdFeB can then be automatically discharged for processing. In this way, the staff does not need to continuously perform the operations of limiting and releasing the limit on the rare earth permanent magnet sintered NdFeB, and the operation is relatively convenient;

[0025] With the testing mechanism provided by the present utility model, when performing permanent magnet testing on another specification of rare earth permanent magnet sintered NdFeB in a batch, the turntable with different specifications of rare earth permanent magnet sintered NdFeB placing cylinders can be replaced, and then the permanent magnet testing can be carried out. It is relatively convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 and Figure 2 FIG. is a schematic perspective view of a permanent magnet testing device for rare earth permanent magnet sintered NdFeB proposed by the present utility model.

[0028] Figure 3 FIG. is a schematic cross-sectional view of a permanent magnet testing device for rare earth permanent magnet sintered NdFeB proposed by the present utility model.

[0029] Figure 4 is Figure 3 Schematic diagram of part A structure in.

[0030] In the figure, 1, support frame; 2, top frame; 3, power motor; 4, power shaft; 5, turntable; 6, rare earth permanent magnet sintered NdFeB placing cylinder; 7, rare earth permanent magnet sintered NdFeB; 8, bottom hole; 9, sleeve plate; 10, positioning block; 11, positioning groove; 12, strengthening brace; 13, synchronous hydraulic cylinder; 14, support plate; 15, blanking hole; 16, ball; 17, ball groove; 18, testing machine; 19, alarm. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0032] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0033] See Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , the present utility model provides a permanent magnet testing device for rare earth permanent magnet sintered NdFeB, including:

[0034] A support frame 1, on the top of which a top frame 2 is fixedly arranged;

[0035] A testing mechanism, which is arranged on the support frame 1 and the top frame 2. It should be noted that the permanent magnet testing of the rare earth permanent magnet sintered NdFeB 7 is carried out through the testing mechanism;

[0036] The testing mechanism includes a testing component and a switching component;

[0037] The testing component includes a power motor 3, a power shaft 4, a turntable 5, a rare earth permanent magnet sintered NdFeB placement cylinder 6, a sleeve plate 9, a positioning block 10, and a testing machine 18. The power motor 3 is fixedly installed on the top of the top frame 2, the output end of the power motor 3 is fixedly connected to the power shaft 4, the sleeve plate 9 is fixedly sleeved on the outside of the power shaft 4, the rare earth permanent magnet sintered NdFeB placement cylinder 6 is fixedly installed at the top of the turntable 5, the rare earth permanent magnet sintered NdFeB 7 is placed in the rare earth permanent magnet sintered NdFeB placement cylinder 6, the positioning block 10 is fixedly installed at the top of the turntable 5, a plurality of positioning grooves 11 are opened at the bottom end of the sleeve plate 9, the positioning block 10 is clamped with the positioning grooves 11, and the testing machine 18 is fixedly installed at the bottom of the top frame 2;

[0038] By means of the above-mentioned test component, start the power motor 3, place the rare earth permanent magnet sintered NdFeB 7 into the rare earth permanent magnet sintered NdFeB placement cylinder 6, the power motor 3 drives the power shaft 4 to rotate, the power shaft 4 drives the sleeve disc 9 to rotate, the sleeve disc 9 drives the turntable 5 to rotate through the positioning block 10, and the turntable 5 drives the rare earth permanent magnet sintered NdFeB placement cylinder 6 to rotate, so as to drive the rare earth permanent magnet sintered NdFeB 7 to rotate. When the rare earth permanent magnet sintered NdFeB 7 rotates to the lower part of the testing machine 18, the testing machine 18 performs a permanent magnet test on the rare earth permanent magnet sintered NdFeB 7. In this way, the staff does not need to continuously perform limiting and de-limiting operations, and the operation is relatively convenient;

[0039] It should be noted that the specific structure and working principle of the testing machine 18 can refer to the existing patent CN218213399U, which will not be elaborated here;

[0040] The switching component includes a reinforcing brace 12, a synchronous hydraulic cylinder 13 and a support disc 14. The reinforcing brace 12 is installed on the support frame 1, the synchronous hydraulic cylinder 13 is fixedly installed at the top of the reinforcing brace 12, the hydraulic rod of the synchronous hydraulic cylinder 13 is fixedly connected to the support disc 14, and a material discharging hole 15 is opened at the top end of the support disc 14.

[0041] By means of the above-mentioned switching component, when it is necessary to perform a permanent magnet test on rare earth permanent magnet sintered NdFeBs 7 of different specifications, start the synchronous hydraulic cylinder 13, which can make the support disc 14 move downwards to release the support limit on the turntable 5, then remove the turntable 5, replace the turntable 5 with a turntable 5 having rare earth permanent magnet sintered NdFeB placement cylinders 6 of different specifications, and then perform the permanent magnet test.

[0042] Specifically, four bottom holes 8 are opened at the top end of the turntable 5, and the bottom end of the rare earth permanent magnet sintered NdFeB 7 extends into the bottom holes 8.

[0043] With the above structure, it is convenient to perform the blanking process on the rare earth permanent magnet sintered NdFeB 7 after the test.

[0044] Working principle:

[0045] S1: When performing permanent magnet testing on rare earth permanent magnet sintered NdFeB 7 of the same specification in a batch, start the power motor 3, place the rare earth permanent magnet sintered NdFeB 7 into the rare earth permanent magnet sintered NdFeB placement cylinder 6. The power motor 3 drives the power shaft 4 to rotate, the power shaft 4 drives the sleeve disc 9 to rotate, the sleeve disc 9 drives the turntable 5 to rotate through the positioning block 10, and the turntable 5 drives the rare earth permanent magnet sintered NdFeB placement cylinder 6 to rotate. In this way, the rare earth permanent magnet sintered NdFeB 7 can be driven to rotate. When the rare earth permanent magnet sintered NdFeB 7 rotates below the testing machine 18, the testing machine 18 performs permanent magnet testing on the rare earth permanent magnet sintered NdFeB 7. Place a collection bucket in advance below the blanking hole 15. After the rare earth permanent magnet sintered NdFeB 7 passes the test, the rare earth permanent magnet sintered NdFeB 7 automatically falls into the collection bucket through the blanking hole 15. When the rare earth permanent magnet sintered NdFeB 7 fails the test, the alarm 19 will give an alarm, and the staff can manually collect the unqualified rare earth permanent magnet sintered NdFeB 7 that falls from the blanking hole 15. In this way, the staff does not need to continuously perform limiting and releasing limiting operations on the rare earth permanent magnet sintered NdFeB 7, and the operation is relatively convenient;

[0046] S2: When performing permanent magnet testing on rare earth permanent magnet sintered NdFeB 7 of another specification in a batch, start the synchronous hydraulic cylinder 13, which can lower the support disc 14 to release the support limit on the turntable 5. Then remove the turntable 5, replace the turntable 5 with a turntable 5 with a rare earth permanent magnet sintered NdFeB placement cylinder 6 of different specifications, and then perform permanent magnet testing. It is relatively convenient to use.

[0047] Specifically, the bottom end of the rare earth permanent magnet sintered NdFeB 7 is in contact with the support disc 14, the blanking hole 15 is communicated with a bottom hole 8, and a round hole is opened at the top end of the support disc 14. The bottom end of the power shaft 4 passes through the round hole. It should be noted that the rare earth permanent magnet sintered NdFeB 7 can be supported and limited, and the tested rare earth permanent magnet sintered NdFeB 7 falls through the bottom hole 8 and the blanking hole 15.

[0048] Specifically, an alarm 19 is installed at the bottom of the top frame 2, and a controller is installed at the rear side of the top frame 2. The testing machine 18 and the alarm 19 are both electrically connected to the controller. It should be noted that when the rare earth permanent magnet sintered NdFeB 7 fails the test, the alarm 19 will give an alarm.

[0049] Specifically, the bottom end of the turntable 5 is installed with rolling balls 16, a ball groove 17 is opened at the top end of the support disc 14, and the rolling balls 16 are in rolling contact with the inner wall of the ball groove 17. It should be noted that it is convenient for the turntable 5 to rotate on the top end of the support disc 14.

[0050] Specifically, the top end of the turntable 5 is in contact with the sleeve disc 9, and the top end of the support disc 14 is in contact with the turntable 5. It should be noted that the turntable 5 and the support disc 14 can be limited.

[0051] The above has introduced in detail a permanent magnet testing device for sintered neodymium iron boron with rare earth permanent magnets provided by the present utility model. Specific embodiments are applied in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A permanent magnet testing device for sintered Nd-Fe-B rare earth permanent magnets, characterized in that, Comprising: A support frame (1), with a top frame (2) fixedly arranged at the top of the support frame (1); A testing mechanism, which is arranged on the support frame (1) and the top frame (2); The testing mechanism includes a testing component and a switching component; The testing component includes a power motor (3), a power shaft (4), a turntable (5), a rare earth permanent magnet sintered NdFeB placement cylinder (6), a sleeve disc (9), a positioning block (10), and a testing machine (18). The power motor (3) is fixedly installed at the top of the top frame (2), the output end of the power motor (3) is fixedly connected to the power shaft (4), the sleeve disc (9) is fixedly sleeved outside the power shaft (4), the rare earth permanent magnet sintered NdFeB placement cylinder (6) is fixedly installed at the top of the turntable (5), a rare earth permanent magnet sintered NdFeB (7) is placed in the rare earth permanent magnet sintered NdFeB placement cylinder (6), the positioning block (10) is fixedly installed at the top of the turntable (5), a plurality of positioning grooves (11) are formed at the bottom end of the sleeve disc (9), the positioning block (10) is clamped with the positioning grooves (11), and the testing machine (18) is fixedly installed at the bottom of the top frame (2); The switching component includes a reinforcing brace (12), a synchronous hydraulic cylinder (13), and a support disc (14). The reinforcing brace (12) is installed on the support frame (1), the synchronous hydraulic cylinder (13) is fixedly installed at the top of the reinforcing brace (12), the hydraulic rod of the synchronous hydraulic cylinder (13) is fixedly connected to the support disc (14), and a material discharging hole (15) is formed at the top end of the support disc (14).

2. The permanent magnet testing device for sintered Nd-Fe-B rare earth permanent magnets according to claim 1, wherein, Four bottom holes (8) are formed at the top end of the turntable (5), and the bottom end of the rare earth permanent magnet sintered NdFeB (7) extends into the bottom holes (8).

3. The permanent magnet testing device for sintered NdFeB rare earth permanent magnet according to claim 1, characterized in that, The bottom end of the rare earth permanent magnet sintered NdFeB (7) is in contact with the support disc (14), and the material discharging hole (15) is communicated with one of the bottom holes (8).

4. The permanent magnet testing device for sintered Nd-Fe-B rare earth permanent magnet according to claim 1, characterized in that, An alarm (19) is installed at the bottom of the top frame (2), a controller is installed at the rear side of the top frame (2), and both the testing machine (18) and the alarm (19) are electrically connected to the controller.

5. A permanent magnet testing device for sintered NdFeB rare earth permanent magnets according to claim 1, characterized in that, Ball bearings (16) are rotatably installed at the bottom end of the turntable (5), a ball bearing groove (17) is formed at the top end of the support disc (14), and the ball bearings (16) are in rolling contact with the inner wall of the ball bearing groove (17).

6. The permanent magnet testing device for sintered NdFeB rare earth permanent magnets according to claim 1, wherein, The top end of the turntable (5) is in contact with the sleeve disc (9).

7. A permanent magnet testing device for rare earth permanent magnet sintered NdFeB according to claim 1, characterized in that, A circular hole is formed at the top end of the support disc (14), and the bottom end of the power shaft (4) penetrates through the circular hole.

8. A permanent magnet testing device for sintered NdFeB rare earth permanent magnets according to claim 1, characterized in that, The top end of the support disc (14) is in contact with the turntable (5).

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