Halbach magnetic assembly and tool thereof

Abstract

The utility model relates to the field of magnetic steel, and discloses a Halbach magnetic assembly and a tool thereof, the key points of the technical scheme are that the Halbach magnetic assembly comprises three first magnets and two second magnets, the first magnets and the second magnets are arranged at intervals and are bonded, the N poles of the two second magnets are opposite, the N poles of the two first magnets located at the two ends face upwards, and the first magnets and the second magnets are bonded together. The N pole of the first magnet located in the center faces downwards, magnetic lines of force can be gathered on one side of the first magnet and one side of the second magnet, the magnetic lines of force can be weakened on the other side, an ideal unilateral magnetic field is obtained, the iron sheet can improve the bonding strength of the first magnet and the second magnet, meanwhile, the magnetic force of a non-strong magnetic face can be weakened, and the magnetic force of a strong magnetic face can be enhanced.

Description

Technical Field

[0001] The utility model relates to the field of magnetic steel, and more specifically to a Halbach magnetic component and a tooling thereof. Background Art

[0002] In the common production of strong magnetic materials, NdFeB magnets are divided into two types: sintered NdFeB and bonded NdFeB. NdFeB is the permanent magnet with the strongest magnetic force at room temperature so far, but its surface is prone to rust, so some protective surface treatment is usually performed, such as nickel plating, zinc plating, etc.

[0003] In order to enhance the magnetic strength, it is generally chosen to increase the thickness of the magnet, but the thickness space at the installation space is limited. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a Halbach magnetic assembly and a tooling thereof, which are used to arrange a first magnet and a second magnet according to a certain rule to increase the magnetic strength.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a Halbach magnetic assembly, comprising three first magnets and two second magnets, the first magnets and the second magnets are arranged at intervals and bonded, the N poles of the two second magnets are facing opposite each other, the N poles of the two first magnets located at the two ends are facing upward, and the N pole of the first magnet located at the center is facing downward, and iron sheets are bonded to the upper surfaces of the first magnets and the second magnets.

[0006] As a further improvement of the present invention, two adjacent side surfaces of a single first magnet and a single second magnet are coated with glue and a promoter respectively.

[0007] As a further improvement of the present invention, the length of the first magnet is greater than or equal to 1.2 times the length of the second magnet, and less than or equal to 2.2 times the length of the second magnet.

[0008] A tooling for the Halbach magnetic assembly as described above comprises a base plate and a loading plate, wherein the base plate and the loading plate are detachably connected, wherein the loading plate is provided with a plurality of hole groups, wherein the hole groups comprise three first through holes and two second through holes, wherein the first through holes and the second through holes are spaced apart, and wherein the base plate is magnetic.

[0009] As a further improvement of the present invention, two through slots are provided on the loading plate, and the second through holes are provided in the corresponding through slots.

[0010] As a further improvement of the present invention, the spacing distance between the first through hole and the second through hole is greater than or equal to 1.5 times the length of the first magnet.

[0011] As a further improvement of the utility model, the surface of the bottom plate is electroplated with nickel or hard chromium.

[0012] Beneficial effects of the utility model: in the utility model, the N poles of the two second magnets are facing each other, the N poles of the two first magnets at the two ends are facing upward, and the N pole of the first magnet at the center is facing downward, so that the magnetic lines of force can be gathered on one side of the first magnet and the second magnet, and the magnetic lines of force can be weakened on the other side to obtain a relatively ideal unilateral magnetic field. The iron sheet can improve the bonding strength between the first magnet and the second magnet, and at the same time can also weaken the magnetic force of the non-strong magnetic surface and enhance the magnetic force of the strong magnetic surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the Halbach magnetic assembly in the utility model;

[0014] Figure 2 It is a schematic diagram of the matching structure of the bottom plate and the loading plate in the utility model;

[0015] Figure 3 It is a structural schematic diagram of the bottom plate of the utility model;

[0016] Figure 4 It is a structural schematic diagram of the cover plate in the utility model;

[0017] Figure 5 It is a structural schematic diagram of the material pressing plate in the utility model;

[0018] Figure 6 It is a structural schematic diagram of the push plate in the utility model.

[0019] Figure numerals: 1, first magnet; 2, second magnet; 3, iron sheet; 4, bottom plate; 5, loading plate; 51, first through hole; 52, second through hole; 53, through groove; 6, pressing plate; 7, pushing plate; 8, cover plate. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. The same parts are represented by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "bottom surface" and "top surface", "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0021] Reference Figure 1As shown, a Halbach magnetic assembly of this embodiment includes three first magnets 1 and two second magnets 2, the first magnets 1 and the second magnets 2 are arranged at intervals and bonded, the N poles of the two second magnets 2 face each other, the N poles of the two first magnets 1 at the two ends face upward, and the N pole of the first magnet 1 at the center faces downward. Through this arrangement order, the magnetic lines of force can be gathered on one side of the first magnet 1 and the second magnet 2, and the magnetic lines of force can be weakened on the other side, so as to obtain a relatively ideal unilateral magnetic field;

[0022] Figure 1 In the figure, the arrow indicates the direction of the N pole.

[0023] An iron sheet 3 is bonded to the upper surface of the first magnet 1 and the second magnet 2, wherein the material of the iron sheet 3 is spcc, which can improve the bonding strength between the first magnet 1 and the second magnet 2, and at the same time can weaken the magnetic force of the non-strong magnetic surface and enhance the magnetic force of the strong magnetic surface.

[0024] The two sides of the single first magnet 1 and the single second magnet 2 that are attached to each other are coated with glue and a promoter respectively to ensure adhesion.

[0025] The length of the first magnet 1 is greater than or equal to 1.2 times the length of the second magnet 2 and less than or equal to 2.2 times the length of the second magnet 2, so that the magnetic force of the Halbach magnetic assembly is enhanced by more than 1.4 times compared with a normal arrangement of the same polarity.

[0026] Reference Figures 2 to 6 As shown, a tooling of the Halbach magnetic assembly as described above includes a bottom plate 4 and a loading plate 5, the bottom plate 4 and the loading plate 5 are detachably connected, and a plurality of hole groups are provided on the loading plate 5. The arrangement of the plurality of hole groups can assemble a plurality of Halbach magnetic assemblies at the same time, thereby improving the assembly efficiency;

[0027] The hole group includes three first through holes 51 and two second through holes 52, the first through holes 51 and the second through holes 52 are arranged at intervals, the bottom plate 4 is magnetic, wherein the width of the bottom plate 4 is smaller than the width of the loading plate 5, so as to facilitate upward removal of the loading plate 5;

[0028] The first magnet 1 and the second magnet 2 are adsorbed on the bottom plate 4 by the magnetism of the bottom plate 4 , and then the first magnet 1 and the second magnet 2 can be coated with glue.

[0029] Reference Figure 3 As shown, two through slots 53 are provided on the loading plate 5, and the second through hole 52 is provided in the corresponding through slot 53. The arrangement of the through slot 53 forms a height difference between the first through hole 51 and the second through hole 52, which facilitates the distinction between the first through hole 51 and the second through hole 52, and facilitates material unloading to prevent the first magnet 1 and the second magnet 2 from being installed misaligned.

[0030] Reference Figure 2 , Figure 3 As shown, the spacing distance between the first through hole 51 and the second through hole 52 is greater than or equal to 1.5 times the length of the first magnet 1. Controlling the spacing distance between the first through hole 51 and the second through hole 52, that is, controlling the spacing distance between the first magnet 1 and the second magnet 2, prevents the first magnet 1 and the second magnet 2 from being attracted to each other before glue and accelerant are applied.

[0031] The surface of the bottom plate 4 is electroplated with nickel or hard chrome to improve the surface smoothness of the bottom plate 4 by electroplating, thereby reducing the possibility of scratches on the bottom plate 4 during the movement of the first magnet 1 and the second magnet 2 on the bottom plate 4 and increasing the service life of the bottom plate 4.

[0032] In addition, there are a push plate 7 and a press plate 6, and the press plate 6 limits the upward movement direction of the first magnet 1 and the second magnet 2 to prevent the first magnet 1 and the second magnet 2 from bouncing and flipping the polarity;

[0033] The push plate 7 is provided with a slot, and the first magnet 1 and the second magnet 2 can enter the slot. The push plate 7 and the press plate 6 are placed on the bottom plate 4, and the push plate 7 is pushed, and the push plate 7 is brought close to the press plate 6, so that the first magnet 1 and the second magnet 2 are close to each other and form a fit;

[0034] It also includes a cover plate 8 , on which a positioning groove is opened, and the first magnet 1 and the second magnet 2 after being bonded are placed in the positioning groove to install the iron sheet 3 .

[0035] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims

1. A Halbach magnetic assembly, characterized in that: The invention comprises three first magnets (1) and two second magnets (2), wherein the first magnets (1) and the second magnets (2) are spaced apart and bonded together, the N poles of the two second magnets (2) are facing each other, the N poles of the two first magnets (1) at the two ends are facing upwards, and the N pole of the first magnet (1) at the center is facing downwards, and iron sheets (3) are bonded to the upper surfaces of the first magnets (1) and the second magnets (2).

2. A Halbach magnetic assembly according to claim 1, characterized in that: The two sides of the single first magnet (1) and the single second magnet (2) that are in contact with each other are coated with glue and a promoter respectively.

3. A Halbach magnetic assembly according to claim 1, characterized in that: The length of the first magnet (1) is greater than or equal to 1.2 times the length of the second magnet (2), and less than or equal to 2.2 times the length of the second magnet (2).

4. A tool, characterized in that: Used to assemble the Halbach magnetic assembly described in any one of claims 1-3.

5. The tooling according to claim 4, characterized in that: It comprises a bottom plate (4) and a loading plate (5), wherein the bottom plate (4) and the loading plate (5) are detachably connected, and the loading plate (5) is provided with a plurality of hole groups, wherein the hole groups comprise three first through holes (51) and two second through holes (52), and the first through holes (51) and the second through holes (52) are arranged at intervals, and the bottom plate (4) is magnetic.

6. The tooling according to claim 5, characterized in that: The loading plate (5) is provided with two through slots (53), and the second through holes (52) are provided in the corresponding through slots (53).

7. The tooling according to claim 5, characterized in that: The spacing distance between the first through hole (51) and the second through hole (52) is greater than or equal to 1.5 times the length of the first magnet (1).

8. The tooling according to claim 5, characterized in that: The surface of the bottom plate (4) is electroplated with nickel or hard chromium.

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