Structure and method for controlling thickness of adhesive layer of Halbach magnetic assembly

Abstract

The invention discloses a structure and method for controlling the thickness of a glue layer of a Halbach magnetic assembly, and relates to the technical field of Halbach magnetic assemblys.The structure is characterized in that a boss is arranged between two adjacent magnets and used for separating the two adjacent magnets to form a gap, the gap is used for being filled with glue, and the height of the boss is equal to the size of the gap; the thickness is also equal to the thickness of a glue layer formed by filling glue in the interval to bond adjacent magnets; the method comprises the following steps: S10, setting the maximum length tolerance of the Halbach magnetic assembly as N according to the precision or purpose of the Halbach magnetic assembly; s20, the number of the magnets forming the Halbach magnetic assembly is S, and the maximum length tolerance D = N / S of the single magnet is calculated; s30, the maximum height L1 of a boss between every two adjacent magnets is equal to the maximum length tolerance D of the single magnet. The thickness of the adhesive layer can be controlled by controlling the height of the boss in the left-right direction, the risk that the adhesive layer is pinched off is avoided, and the thickness of the adhesive layer is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of Halbach magnetic components, and in particular to a structure and method for controlling the thickness of a glue layer of a Halbach magnetic component. Background Art

[0002] In the prior art, when a plurality of magnets 11 ′ are assembled into a Halbach assembly 1 ′, the interaction force between adjacent magnets 11 ′ causes the adjacent magnets 11 ′ to be close to each other, resulting in a risk of the glue layer being pinched off. Summary of the invention

[0003] The object of the present invention is to provide a structure and method for controlling the thickness of the glue layer of a Halbach magnetic assembly, which can control the thickness of the glue layer and make the thickness of the glue layer not be affected by the force between adjacent magnets.

[0004] To achieve the above object, the solution of the present invention is: A structure for controlling the thickness of the glue layer of a Halbach magnetic assembly. The Halbach magnetic assembly is composed of multiple magnets arranged side by side left and right. A boss is arranged between two adjacent magnets. The boss is used to separate the two adjacent magnets to form a gap. The gap is used to fill glue. The height of the boss in the left and right direction is equal to the size of the gap, which is also equal to the thickness of the glue layer formed after the gap is filled with glue to bond the adjacent magnets.

[0005] Furthermore, the boss is integrally formed with any one of two adjacent magnets.

[0006] Furthermore, the boss is cylindrical in shape, the bottom surface and the top surface of the boss are respectively connected to the facing sides of the two magnets, the boss is arranged between two adjacent magnets, and the height of the boss increases the overall length of the Halbach magnetic assembly.

[0007] Furthermore, the Halbach magnetic assembly is composed of four cube-structured magnets arranged side by side from left to right, and the magnetization directions of the four magnets are rightward, upward, leftward and downward from left to right, respectively. Two bosses are arranged between two adjacent magnets, and the two bosses are respectively located at two opposite corners of the facing sides of the two adjacent magnets.

[0008] Specifically, the length of the magnet is L0=10mm, the width is Q0=10mm, the diameter of the boss is Q1=4mm, the height is L1=0.5mm, and the straight-line distances between the center of the top and bottom surfaces of the boss and the two closest sides of the connected magnet side are L2=2.5mm and Q2=2.5mm respectively.

[0009] The present invention also provides a method for controlling the thickness of the glue layer of the Halbach magnetic component, which uses the above-mentioned structure for controlling the thickness of the glue layer of the Halbach magnetic component, and includes the following steps: S10: Set the maximum length tolerance to N according to the accuracy or purpose of the Halbach magnetic component; S20: The number of magnets constituting the Halbach magnetic assembly is S, and the maximum length tolerance of a single magnet is calculated to be D=N÷S; S30: The maximum height L1 of the boss between two adjacent magnets is equal to the maximum length tolerance D of a single magnet.

[0010] After adopting the above scheme, the beneficial effects of the present invention are: (1) The present invention sets a boss between adjacent magnets in the Halbach magnetic assembly, uses the boss to separate two adjacent magnets to form a gap, fills the gap with glue to solidify to form a glue layer that bonds the adjacent magnets. Therefore, the present invention can control the height of the boss in the left and right directions, thereby controlling the thickness of the glue layer. Even if there is an interaction force between the magnets, the glue layer cannot be pinched off under the action of the boss, or the glue layer is pinched thinly, thereby avoiding the risk of the glue layer being pinched off and ensuring the thickness of the glue layer. (2) The present invention sets the maximum length tolerance of the Halbach magnetic component according to the accuracy or purpose of the component. The maximum height of the boss is controlled by the maximum length tolerance of the Halbach magnetic component. The boss can be set to any height within the maximum height, thereby avoiding the situation where the overall performance of the Halbach magnetic component is affected by the boss being too high, such as affecting the magnetism of the Halbach magnetic component. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the arrangement structure of the Halbach components in the prior art; Figure 2 yes Figure 1 Schematic diagram of the interaction force between magnets; Figure 3 This is a schematic diagram of the structure of the Halbach magnetic assembly of the present invention; Figure 4 It is a schematic diagram of the structure of the magnet and the boss of the present invention; Figure 5 yes Figure 3 Schematic diagram of the interaction force between magnets.

[0012] Description of labels: 1. Halbach magnetic assembly; 11. magnet; 12. boss; 13. spacer. DETAILED DESCRIPTION

[0013] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0014] like Figure 1-2As shown, it is a Halbach assembly 1' in the prior art, which consists of four cube-shaped magnets 11' arranged in the left-right direction, with a length L0=10mm and a width Q0=10mm. No boss 12 is provided between adjacent magnets 11', and the magnetic directions of the magnets 11' are as follows from left to right: horizontally to the right, vertically upward, horizontally to the left, and vertically downward; The maximum magnetic field strength of the existing Halbach module 1' is 1.9339×10 6 A / m, the interaction force between the four magnets 11' in the left and right directions (i.e., the force in the X-axis direction) is: the magnet 11' with the horizontal magnetic direction pointing to the right is subjected to a force in the X-axis direction along the negative direction of the X-axis, with a magnitude of 3.7077N, the magnet 11' with the vertical magnetic direction pointing upward is subjected to a force in the X-axis direction along the positive direction of the X-axis, with a magnitude of 2.3156N, the magnet 11' with the horizontal magnetic direction pointing to the left is subjected to a force in the X-axis direction along the positive direction of the X-axis, with a magnitude of 4.264N, and the magnet 11' with the vertical magnetic direction pointing downward is subjected to a force in the X-axis direction along the negative direction of the X-axis, with a magnitude of 2.8963N; From the above force analysis, it can be known that the magnet 11' with magnetic vertical upward direction approaches the magnet 11' with magnetic horizontal left direction, and the magnet 11' with magnetic horizontal left direction and the magnet 11' with magnetic vertical downward direction approach each other. During the assembly process, the gap between the magnet 11' with magnetic vertical upward direction and the magnet 11' with magnetic horizontal left direction, and the magnet 11' with magnetic horizontal left direction and the magnet 11' with magnetic vertical downward direction will be reduced, and the remaining amount of glue will be reduced, so that the thickness of the glue layer between the magnet 11' with magnetic vertical upward direction and the magnet 11' with magnetic horizontal left direction, and the magnet 11' with magnetic horizontal left direction and the magnet 11' with magnetic vertical downward direction is significantly smaller than the thickness of the glue layer between the magnet 11' with magnetic horizontal right direction and the magnet 11' with magnetic vertical upward direction, which will cause the glue seam of the assembled magnet 11' to be easily broken.

[0015] like Figures 3 to 5 As shown, the present invention provides a structure for controlling the thickness of the glue layer of the Halbach magnetic assembly 1. The Halbach magnetic assembly 1 is composed of a plurality of magnets 11 arranged side by side left and right, and a boss 12 is arranged between two adjacent magnets 11. The boss 12 is used to separate the two adjacent magnets 11 to form a gap 13, and the gap 13 is used to fill glue. The height of the boss 12 in the left and right direction is equal to the size of the gap 13, and is also equal to the thickness of the glue layer formed after the gap 13 is filled with glue to bond the adjacent magnets 11.

[0016] The present invention arranges a boss 12 between adjacent magnets 11 in the Halbach magnetic assembly 1, uses the boss 12 to separate two adjacent magnets 11 to form a gap 13, fills the gap 13 with glue to solidify to form a glue layer for bonding the adjacent magnets 11, so that the present invention can control the height of the boss 12 in the left and right directions, thereby controlling the thickness of the glue layer. Even if there is an interaction force between the magnets 11, the glue layer cannot be pinched off or a thin glue layer is pinched off under the action of the boss 12, thereby avoiding the risk of the glue layer being pinched off and ensuring the thickness of the glue layer. Specifically, the boss 12 is integrally formed with any one of two adjacent magnets 11 ; it can be understood that the boss 12 and the magnet 11 are made of the same material and are processed when the magnet 11 is processed.

[0017] like Figure 3 , Figure 4 As shown, the boss 12 is cylindrical in shape, and the bottom and top surfaces of the boss 12 are respectively connected to the facing sides of the two magnets 11, and the boss 12 is arranged between two adjacent magnets 11. The height of the boss 12 increases the overall length of the Halbach magnetic assembly 1. It can be understood that the cylindrical boss 12 can spread the glue quickly, so that the glue can quickly fill the gap 13 between the adjacent magnets 11, and the cylinder can avoid the edge breakage caused by collision during the assembly process of the two magnets 11, and has the effect of preventing collision. like Figure 3 As shown, in one embodiment of the present invention, the Halbach magnetic assembly 1 is composed of four cube-shaped magnets 11 arranged side by side from left to right, and the magnetization directions of the four magnets 11 are rightward, upward, leftward and downward from left to right. Two bosses 12 are arranged between two adjacent magnets 11, and the two bosses 12 are respectively located at two opposite corners of the facing sides of the two adjacent magnets 11; specifically, the length L0 of the magnet 11 is 10 mm, the width Q0 is 10 mm, the diameter Q1 of the boss 12 is 4 mm, the height L1 is 0.5 mm, and the distances between the center of the top and bottom surfaces of the boss 12 and the two closest sides of the side surface of the connected magnet 11 are L2=2.5 mm and Q2=2.5 mm respectively; like Figure 5 As shown in the embodiment provided by the present invention, the maximum magnetic field strength is 1.9481×10 6 A / m, under the premise of the same size of magnet 11, adding boss 12 also increases the magnetic field strength by 1.42×10 4A / m; The interaction force between the four magnets 11 in the left and right directions (i.e., the force in the X-axis direction) is 3.9048N along the negative X direction for the magnet 11 with the horizontal magnetic direction to the right, 2.826N along the positive X direction for the magnet 11 with the vertical magnetic direction to the left, 2.3528N along the positive X direction for the magnet 11 with the horizontal magnetic direction to the left, and 2.3528N along the positive X direction for the magnet 11 with the vertical magnetic direction to the down. It is along the negative X direction and has a magnitude of 1.0281N. From the analysis of the acting force, it can be concluded that the present invention will reduce the force of the magnet 11 pointing vertically upward and the magnet 11 pointing horizontally to the left. When the magnets 11 attract each other, the boss 12 will prevent the gap between the magnets 11 from decreasing, thereby preventing the remaining amount of glue from decreasing, so that the gap between the magnets 11 always maintains a minimum value of the height of the boss 12, ensuring the thickness of the glue layer between the magnets 11, so that the glue seam of the assembled magnets 11 is not easy to break.

[0018] The present invention also provides a method for controlling the thickness of the glue layer of the Halbach magnetic component 1, which uses the above-mentioned structure for controlling the thickness of the glue layer of the Halbach magnetic component 1, and includes the following steps: S10: setting the maximum length tolerance of the Halbach magnetic component 1 to N according to its accuracy or purpose; S20: The number of magnets 11 constituting the Halbach magnetic assembly 1 is S, and the maximum length tolerance of a single magnet 11 is calculated to be D=N÷S; S30 : The maximum height L1 of the boss 12 between two adjacent magnets 11 is equal to the maximum length tolerance D of the single magnet 11 .

[0019] The present invention sets the maximum length tolerance of the Halbach magnetic component 1 according to the accuracy or purpose of use. The maximum height of the boss 12 is controlled by the maximum length tolerance of the Halbach magnetic component 1. The boss 12 can be set to any height within the maximum height, thereby avoiding the situation where the overall performance of the Halbach magnetic component 1 is affected due to the boss 12 being too high, such as affecting the magnetism of the Halbach magnetic component 1.

[0020] The directional terms mentioned in this specification are defined relative to the structures shown in the drawings. They are relative concepts and may change accordingly according to different locations and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0021] The above description is only a preferred embodiment of the present invention and is not a limitation on the design of this case. Any equivalent changes made based on the design key of this case shall fall within the protection scope of this case.

Claims

1. A structure for controlling the thickness of the adhesive layer of a Halbach magnetic assembly, wherein the Halbach magnetic assembly is composed of a plurality of magnets arranged side by side, characterized in that: A boss is arranged between two adjacent magnets, and the boss is used to separate the two adjacent magnets to form a gap, and the gap is used to fill glue. The height of the boss in the left and right directions is equal to the size of the gap, and is also equal to the thickness of the glue layer formed after the gap is filled with glue to bond the adjacent magnets.

2. The structure for controlling the thickness of the adhesive layer of a Halbach magnetic component according to claim 1, characterized in that: The boss is integrally formed with any one of two adjacent magnets.

3. The structure for controlling the thickness of the adhesive layer of a Halbach magnetic component according to claim 1, characterized in that: The boss is cylindrical in shape, and the bottom and top surfaces of the boss are respectively connected to the facing sides of the two magnets. The boss is arranged between two adjacent magnets, and the height of the boss increases the overall length of the Halbach magnetic assembly.

4. The structure for controlling the thickness of the adhesive layer of a Halbach magnetic component according to claim 3, characterized in that: The Halbach magnetic assembly consists of four cube-shaped magnets arranged side by side from left to right. The magnetization directions of the four magnets are rightward, upward, leftward and downward from left to right. Two bosses are arranged between two adjacent magnets, and the two bosses are respectively located at two opposite corners of the facing sides of the two adjacent magnets.

5. The structure for controlling the thickness of the adhesive layer of a Halbach magnetic component according to claim 4, characterized in that: The length of the magnet is L0=10mm, the width is Q0=10mm, the diameter of the boss is Q1=4mm, the height is L1=0.5mm, and the straight-line distances between the center of the top and bottom surfaces of the boss and the two closest sides of the connected magnet side are L2=2.5mm and Q2=2.5mm respectively.

6. A method for controlling the thickness of the adhesive layer of a Halbach magnetic component, using the structure for controlling the thickness of the adhesive layer of a Halbach magnetic component according to any one of claims 1 to 4, characterized in that: The following steps are involved: S10: Set the maximum length tolerance to N according to the accuracy or purpose of the Halbach magnetic component; S20: The number of magnets constituting the Halbach magnetic assembly is S, and the maximum length tolerance of a single magnet is calculated to be D=N÷S; S30: The maximum height L1 of the boss between two adjacent magnets is equal to the maximum length tolerance D of a single magnet.

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