Magnetizing method for magnetic assembly

Abstract

The invention discloses a magnetizing method for a magnetic assembly, and when the magnetic assembly is a Halbach magnetic assembly with two magnets, the magnetizing method comprises the following steps: S11: one magnet is a magnetic magnet, and the other magnet is a non-magnetic magnet; s12, the two magnets are bonded to form a Halbach magnetic assembly; s13, magnetizing by using a magnetizing coil, wherein an acute angle is formed between the Halbach magnetic assembly and the polarity direction of the magnetizing coil; when the magnetic assembly is an assembly of a plurality of special-shaped magnets with oblique polarity orientation, the magnetizing method comprises the steps that S21, the special-shaped magnets are placed in jig grooves matched with the special-shaped magnets in shape, and the flat faces of the special-shaped magnets are flush with the surface of a jig plate; s22, a sectional type multi-pole magnetizing clamp is used for magnetizing; s23, the multiple magnetized special-shaped magnets are transferred to an adsorption plate; and S24, a combined tool is used for assembling to form a combined part. The magnetizing efficiency of the magnetic assembly is effectively improved, the production quality of the magnetic assembly is ensured, and the labor burden is relieved.

Description

Technical Field

[0001] The invention relates to the technical field of magnetic component processing, and in particular to a magnetic component magnetization method. Background Art

[0002] Magnetization of magnetic components is an important step in the processing of magnetic components, which directly affects the overall performance of magnetic components. There are two types of magnetic components currently circulating on the market. One is a Halbach magnetic component composed of two rectangular magnets, and its bonding process mainly relies on manual and tooling cooperation; the other is a combination of multiple polar obliquely oriented special-shaped magnets, and its manufacturing process is more complicated.

[0003] For the Halbach magnetic assembly of two magnets, there are two main existing bonding methods: one is that after the two magnets have completed saturation magnetization, they are manually arranged on the adsorption plate according to the correct polarity, and then glue is dispensed on the bonding surface, and then the magnets are placed in a pressure-holding fixture for fixation; the other method is also that after the two magnets have completed saturation magnetization, they are placed in the fixture slot, glue is dispensed on the bonding surface using a glue dispenser or manually, and then pressure-holding positioning is performed.

[0004] However, both methods have complex problems of pressure holding and extrusion positioning. The instability of the force applied to the magnet during the extrusion process leads to poor consistency in the glue layer and shear strength. In addition, the glue can only be removed from the tooling after it has solidified. This undoubtedly reduces assembly efficiency and increases the number and cost of tooling.

[0005] For the assembly of multiple polar obliquely oriented special-shaped magnets, the current process is to manually identify the special-shaped surfaces or polar orientation directions of multiple polar obliquely oriented special-shaped magnets, sort them with the help of a vibration plate and perform weak magnetization, and after magnetization, manually turn the multiple polar obliquely oriented special-shaped magnets 1' into neat strips and then perform saturation magnetization, such as Figure 1 As shown, after saturation magnetization, a plurality of polarity obliquely oriented special-shaped magnets 1' are manually removed and assembled into a combination required for processing.

[0006] However, this process also has its shortcomings. It is easy for humans to make mistakes when identifying the irregular surface or polarity orientation of the irregular magnets, and the auxiliary identification of the vibration plate is not stable and reliable enough. After weak magnetization, the task of arranging multiple polarity obliquely oriented irregular magnets 1' into neat strips is extremely tedious for humans, and it is easy to make mistakes such as Figure 2 The problem of uneven adsorption arrangement shown in the figure requires manual rotation of each special-shaped magnet to arrange it into neat strips, which not only increases the labor burden, but also further reduces production efficiency. Summary of the invention

[0007] The object of the present invention is to provide a magnetizing method for a magnetic assembly, which can improve the magnetizing efficiency of a Halbach magnetic assembly of two magnets and a plurality of polarity obliquely oriented special-shaped magnets, and ensure product quality.

[0008] To achieve the above object, the present invention provides a solution: a method for magnetizing a magnetic component, characterized in that: When the magnetic assembly is a Halbach magnetic assembly with two magnets, the magnetization method is: S11: The two magnets include a guiding magnet and a non-guiding magnet. One of the guiding magnet or the non-guiding magnet is magnetized to form a magnetic magnet, and the other non-guiding magnet or the guiding magnet is a non-magnetic magnet; S12: placing the magnetized magnet in a tooling slot corresponding to the size of the Halbach magnetic assembly, applying glue to the bonding surfaces of the magnetized magnet and the non-magnetic magnet and adsorbing them to each other to form a Halbach magnetic assembly; S13: magnetizing the Halbach magnetic assembly using a magnetizing coil, firstly aligning the polarity orientation of the guide magnet of the Halbach magnetic assembly with the polarity direction of the magnetizing coil in parallel and in accordance, and then rotating the Halbach magnetic assembly so that the angle between the polarity orientation of the guide magnet of the Halbach magnetic assembly and the polarity direction of the magnetizing coil is an acute angle, and the angle between the polarity orientation of the non-guide magnet and the polarity direction of the magnetizing coil is an acute angle, and after magnetization, the polarity directions of the guide magnet and the non-guide magnet are perpendicular to each other; When the magnetic assembly is a combination of multiple polarity obliquely oriented special-shaped magnets, the magnetization method is: S21: Each special-shaped magnet is provided with a special-shaped surface and a flat surface, and a fixture plate is provided with a fixture groove matching the special-shaped surface, and a plurality of special-shaped magnets are placed in the fixture groove, with the special-shaped surface located at the bottom of the fixture groove and the flat surface flush with the surface of the fixture plate; S22: Place the fixture plate together with a plurality of special-shaped magnets into a segmented multi-pole magnetizing fixture for one-time saturation magnetization; S23: After the magnetization is completed, the jig plate together with the plurality of special-shaped magnets are taken out, and the adsorption plate cover is placed on the surface of the jig plate, and the plurality of special-shaped magnets are adsorbed from the jig grooves of the jig plate to the adsorption plate through the flat surface of the special-shaped magnets; S24: Assemble the plurality of special-shaped magnets that have been saturated and magnetized on the adsorption plate into an assembly using an assembly tool.

[0009] Preferably, in step S12, the bottom of the tooling slot is made of a magnetically conductive adsorption material.

[0010] In a preferred embodiment, the combined tooling of step S24 includes a workbench and a material placing plate, a material loading plate, a material loading pipe, a material pressing assembly and a material pushing assembly arranged on the workbench; The discharge plate is provided with a plurality of discharge grooves matching the special-shaped magnets, the adsorption plate is placed on the discharge plate, and the special-shaped magnets on the adsorption plate are located in the discharge grooves; The loading plate is arranged on one side of the discharge plate, and a plurality of loading grooves corresponding to the discharge grooves are arranged on the loading plate, the discharge grooves are arranged horizontally and connected to the loading grooves, and the loading pipes are arranged in the loading grooves; The pressing assembly is arranged on the other side of the discharge plate and is used to fix the adsorption plate on the discharge plate; The pushing assembly is arranged on the other side of the discharge plate and is used for pushing the special-shaped magnets in the discharge trough into the loading pipe of the loading plate.

[0011] In a preferred embodiment, the workbench includes a horizontal plate and two vertical plates, the two vertical plates are arranged on the front and rear sides of the horizontal plate, a clearance hole is opened on the horizontal plate, a discharge plate and a loading plate are arranged on the top surface of the horizontal plate, the discharge trough is located in the clearance hole, the loading plate is located on the left side of the clearance hole, the pressing assembly is arranged on the top surface of the horizontal plate and on the right side of the clearance hole, and the pushing assembly is arranged on the bottom surface of the horizontal plate and on the right side of the clearance hole.

[0012] In a preferred embodiment, the pushing assembly includes a pushing cylinder and a pushing plate, wherein the pushing cylinder is arranged on the bottom surface of the horizontal plate, the output end of the pushing cylinder is arranged horizontally, the pushing plate is arranged at the output end of the pushing cylinder, and a plurality of pushing blocks matching the discharge trough are arranged on the pushing plate, and the pushing blocks reciprocate horizontally in the discharge trough.

[0013] The preferred solution further comprises a handle valve, which is arranged on the transverse plate and connected to the pushing cylinder.

[0014] In a preferred embodiment, the pressing assembly includes a fixed seat, a pressing head, a connecting rod, a pressing handle and a connecting piece. The fixed seat is arranged on the top surface of the horizontal plate and is located on the right side of the clearance hole. The pressing head is fixed to the left end of the connecting rod, the right end of the connecting rod is hinged to the left side of the fixed seat, the left end of the pressing handle is hinged to the right end of the connecting rod, the right end of the pressing handle is hinged to the right side of the fixed seat, one end of the connecting piece is hinged to the middle part of the pressing handle, and the other end of the connecting piece is hinged to the right side of the fixed seat.

[0015] In a preferred embodiment, a recessed portion is provided in the middle of the fixed seat, and a protruding portion is provided in the middle of the pressing handle. When locked, the pressing head rests on the adsorption plate, and the protruding portion of the pressing handle is located in the recessed portion in the middle of the fixed seat. When unlocked, the pressing head is away from the adsorption plate, and the left end of the pressing handle and the right end of the connecting rod are located in the recessed portion of the fixed seat.

[0016] In a preferred embodiment, a plurality of limit blocks are disposed correspondingly on the left and right sides of the charging plate, and the charging grooves are formed in pairs between the plurality of limit blocks. Both ends of the charging tube are located in the charging grooves on the left and right sides of the charging plate, respectively.

[0017] After adopting the above scheme, the beneficial effects of the present invention are: For the Halbach magnetic assembly with two magnets, the present invention first magnetizes one of the guide magnets or the non-guide magnet to form a magnetic magnet, and does not magnetize the other non-guide magnet or the guide magnet to form a non-magnetic magnet. After the bonding surfaces of the magnetic magnet and the non-magnetic magnet are glued, the magnetic magnet and the non-magnetic magnet in the tooling groove can be automatically adsorbed, and there is no repulsive force of misalignment between the two magnets, so there is no need to use other tooling for pressure maintenance and positioning, which can ensure the consistency of the glue layer and shear strength, ensure product quality, and make subsequent magnetization using a magnetization coil more convenient, thereby improving magnetization efficiency.

[0018] For an assembly of multiple polar obliquely oriented special-shaped magnets, the present invention neatly places each special-shaped magnet in the fixture groove of the fixture plate. Since the shape of the fixture groove matches the shape of the special-shaped magnet, the flat surface of the special-shaped magnet can be flush with the surface of the fixture plate. When the fixture plate and multiple special-shaped magnets are placed in a segmented multi-pole magnetization fixture for one-time saturation magnetization, the accuracy of the polarity direction of each special-shaped magnet after magnetization can be ensured, effectively improving the magnetization efficiency. After the magnetization is completed, the present invention uses the flat surface of the special-shaped magnet to adsorb multiple special-shaped magnets from the fixture groove of the fixture plate to the adsorption plate, and finally uses the combined tooling to assemble the multiple special-shaped magnets on the adsorption plate. The operation is simple and helps to reduce the burden of manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of a plurality of existing polar obliquely oriented special-shaped magnets being adsorbed and arranged and then manually rotated into a neat strip shape; Figure 2 It is a schematic diagram of the uneven adsorption arrangement of multiple existing polar obliquely oriented special-shaped magnets; Figure 3 is a schematic diagram of the Halbach magnetic assembly of two magnets after bonding in an embodiment of the present invention; Figure 4 It is a magnetization schematic diagram showing that the guide magnet in the Halbach magnetic assembly of two magnets in an embodiment of the present invention is non-magnetic and the non-guide magnet is pre-magnetized, and the angle between the length direction of the Halbach magnetic assembly and the polarity direction of the magnetization coil is 40 degrees; Figure 5 It is a magnetization schematic diagram in which the guide magnet in the Halbach magnetic assembly of two magnets in an embodiment of the present invention is pre-magnetized and the non-guide magnet is non-magnetized, and the angle between the length direction of the Halbach magnetic assembly and the polarity direction of the magnetization coil is 25 degrees; Figure 6 Schematic diagram of an assembly of three special-shaped magnets in an embodiment of the present invention having two special-shaped magnets with oblique polarity orientations; Figure 7 It is a schematic diagram of magnetizing an assembly consisting of three special-shaped magnets using a segmented multi-pole magnetizing fixture in an embodiment of the present invention; Figure 8 It is a schematic diagram of using a combined tool to assemble a plurality of special-shaped magnets that have been saturated and magnetized on an adsorption plate to form an assembly in an embodiment of the present invention; Fig. 9 It is a bottom view of an assembly formed by assembling a plurality of special-shaped magnets that have been saturated and magnetized on an adsorption plate using an assembly tool in an embodiment of the present invention; Fig.10 It is a schematic diagram of a push cylinder driving a push block on a push plate to push a special-shaped magnet in a discharge trough to a loading tube in a loading trough in an embodiment of the present invention; Fig.11 1 is a bottom view of the unloading plate in the embodiment of the present invention; Fig.12 is a schematic diagram of a charging plate in an embodiment of the present invention; Fig.13 Schematic diagram of a material pressing assembly in an embodiment of the present invention; Fig.14 is a schematic diagram of a material pressing assembly in an embodiment of the present invention with the material pressing handle removed; Fig.15 is a schematic diagram of a jig plate in an embodiment of the present invention; Fig.16 It is a schematic diagram of adsorbing a plurality of special-shaped magnets from the fixture grooves of the fixture plate to the adsorption plate in an embodiment of the present invention.

[0020] Description of labels: 1', polarity oblique orientation special-shaped magnet; 1. Halbach magnetic assembly; 11. Guide magnet; 12. Non-guide magnet; 13. Magnetic magnet; 14. Non-magnetic magnet; 2. Assembly; 21. Special-shaped magnet; 22. Special-shaped surface; 23. Flat surface; 31. Magnetizing coil; 32. Segmented multi-pole magnetizing fixture; 4. Jig plate; 41. Jig slot; 5. Adsorption board; 6. Combined tooling; 61. Workbench; 62. Feed plate; 63. Loading plate; 64. Loading pipe; 65. Pressing assembly; 66. Pushing assembly; 67. Handle valve; 611, horizontal board; 612, vertical board; 613, clearance hole; 621, discharge trough; 631, loading chute; 632, limiting block; 651, fixed seat; 652, pressing head; 653, connecting rod; 654, pressing handle; 655, connecting piece; 661, push cylinder; 662, push plate; 663, push block; 6511, recessed portion; 6541, convex portion. DETAILED DESCRIPTION

[0021] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0022] This embodiment provides a method for magnetizing a magnetic component. When the magnetic component is a Halbach magnetic component 1 with two magnets, as shown in FIG. Figures 3 to 5 As shown, the magnetization method is: S11: The two magnets include a guide magnet 11 and a non-guide magnet 12. One of the guide magnet 11 or the non-guide magnet 12 is magnetized to form a magnetic magnet 13, and the other non-guide magnet 12 or the guide magnet 11 is a non-magnetic magnet 14; S12: placing the magnetic magnet 13 in a tooling slot corresponding to the size of the Halbach magnetic assembly 1 (not shown in the figure), applying glue to the bonding surfaces of the magnetic magnet 13 and the non-magnetic magnet 14 and adsorbing them to each other to form the Halbach magnetic assembly 1; S13: Use the magnetizing coil 31 to magnetize the Halbach magnetic assembly 1 (the tooling slot is not shown in the figure), first make the polarity orientation of the guide magnet 11 of the Halbach magnetic assembly 1 parallel and consistent with the polarity direction of the magnetizing coil 31, and then rotate the Halbach magnetic assembly 1 so that the angle between the polarity orientation of the guide magnet 11 of the Halbach magnetic assembly 1 and the polarity direction of the magnetizing coil 31 is an acute angle, and the angle between the polarity orientation of the non-guide magnet 12 and the polarity direction of the magnetizing coil 31 is an acute angle. After magnetization, the polarity directions of the guide magnet 11 and the non-guide magnet 12 are perpendicular to each other; like Figure 3 As shown, the guide magnet 11 and the non-guide magnet 12 of this embodiment are both in the shape of a rectangular parallelepiped, and the length, width and height dimensions of the guide magnet 11 are 4.5×2.68×3.56mm, and the length, width and height dimensions of the non-guide magnet 12 are 7.94×3.56×2.68mm. For the Halbach magnetic assembly 1 with two regular magnets, the polarity orientation of the guide magnet 11 is usually in the length direction of the guide magnet 11, and the polarity orientation of the non-guide magnet 12 is usually in the height direction of the non-guide magnet 12. Therefore, in the two magnets of the Halbach magnetic assembly 1 of this embodiment, the PC value (magnetic permeability coefficient) of the guide magnet 11 is greater than the PC value of the non-guide magnet 12. In the subsequent magnetization process, the guide magnet 11 will be more easily magnetized and saturated, and less likely to be demagnetized. Specifically, after one of the two magnets is magnetized and the other is not magnetized and bonded together, if the non-magnetized magnet 14 is parallel to the polarity direction of the magnetizing coil 31, the non-magnetized magnet 14 will be magnetized to saturation, but the magnetized magnet 13 will be subjected to a magnetic field perpendicular to it, and the magnetized magnet 13 will be affected by demagnetization and change from saturation to unsaturation.

[0023] In step S13 of this embodiment, the Halbach magnetic assembly 1 rotates counterclockwise, and of course, it can also rotate clockwise in other embodiments. The angle between the polarity direction of the Halbach magnetic assembly 1 and the magnetizing coil 31 in step S13 is further explained below.

[0024] Table 1 Magnetic moments of the guide magnet without magnetism and the non-guide magnet pre-magnetized Halbach magnetic assembly after magnetization at different angles

[0025] Taking the Halbach magnetic assembly 1 in which the guide magnet 11 is non-magnetic and the non-guide magnet 12 is pre-magnetized as an example, Figure 4 As shown in Table 1, this embodiment uses three groups of Halbach magnetic components 1 to detect the magnetic moment values ​​before and after magnetization. 1. When the angle between the polarity orientation of the guide magnet 11 and the polarity orientation of the magnetizing coil 31 is 35 degrees: In the first group of Halbach magnetic components 1, the magnetic moment of the guide magnet 11 before magnetization is 5.7698, and the magnetic moment of the non-guide magnet 12 is 10.185. After magnetization, the magnetic moment of the guide magnet 11 is 5.7549, and the magnetic moment of the non-guide magnet 12 is 10.162.

[0026] In the second group of Halbach magnetic components 1, the magnetic moment of the guide magnet 11 before magnetization is 5.7378, and the magnetic moment of the non-guide magnet 12 is 10.22. After magnetization, the magnetic moment of the guide magnet 11 is 5.7318, and the magnetic moment of the non-guide magnet 12 is 10.182.

[0027] In the third group of Halbach magnetic components 1, the magnetic moment of the guide magnet 11 before magnetization is 5.7644, and the magnetic moment of the non-guide magnet 12 is 10.103. After magnetization, the magnetic moment of the guide magnet 11 is 5.7821, and the magnetic moment of the non-guide magnet 12 is 10.071.

[0028] 2. When the angle between the polarity orientation of the guide magnet 11 and the polarity orientation of the magnetizing coil 31 is 40 degrees: In the first group of Halbach magnetic components 1, the magnetic moment of the guide magnet 11 before magnetization is 5.7797, and the magnetic moment of the non-guide magnet 12 is 10.142. After magnetization, the magnetic moment of the guide magnet 11 is 5.7588, and the magnetic moment of the non-guide magnet 12 is 10.098.

[0029] In the second group of Halbach magnetic components 1, the magnetic moment of the guide magnet 11 before magnetization is 5.7478, and the magnetic moment of the non-guide magnet 12 is 10.118. After magnetization, the magnetic moment of the guide magnet 11 is 5.7742, and the magnetic moment of the non-guide magnet 12 is 10.075.

[0030] In the third group of Halbach magnetic components 1, the magnetic moment of the guide magnet 11 before magnetization is 5.7458, and the magnetic moment of the non-guide magnet 12 is 10.239. After magnetization, the magnetic moment of the guide magnet 11 is 5.7686, and the magnetic moment of the non-guide magnet 12 is 10.219.

[0031] 3. When the angle between the polarity orientation of the guide magnet 11 and the polarity orientation of the magnetizing coil 31 is 45 degrees: In the first group of Halbach magnetic components 1, the magnetic moment of the guide magnet 11 before magnetization is 5.7593, and the magnetic moment of the non-guide magnet 12 is 10.092. After magnetization, the magnetic moment of the guide magnet 11 is 5.726, and the magnetic moment of the non-guide magnet 12 is 10.055.

[0032] In the second group of Halbach magnetic components 1, the magnetic moment of the guide magnet 11 before magnetization is 5.7526, and the magnetic moment of the non-guide magnet 12 is 10.185. After magnetization, the magnetic moment of the guide magnet 11 is 5.722, and the magnetic moment of the non-guide magnet 12 is 10.163.

[0033] In the third group of Halbach magnetic components 1, the magnetic moment of the guide magnet 11 before magnetization is 5.7416, and the magnetic moment of the non-guide magnet 12 is 10.203. After magnetization, the magnetic moment of the guide magnet 11 is 5.7155, and the magnetic moment of the non-guide magnet 12 is 10.178.

[0034] In this embodiment, the qualified calculation formula for the magnetic moment of the guide magnet 11 is: [(magnetic moment of the guide magnet before magnetization - magnetic moment of the guide magnet after magnetization) / magnetic moment of the guide magnet before magnetization]<1%, and the qualified calculation formula for the magnetic moment of the non-guide magnet 12 is: [(magnetic moment of the non-guide magnet before magnetization - magnetic moment of the non-guide magnet after magnetization) / magnetic moment of the non-guide magnet before magnetization]<1%.

[0035] Specifically, taking the first group of Halbach magnetic components 1 as an example, the guide magnet 11 is substituted into the calculation formula to obtain: [(5.7698-5.7549) / 5.7698]=0.26%<1%, and the non-guide magnet 12 is substituted into the calculation formula to obtain: [(10.185-10.162) / 10.185]=0.23%<1%. The calculation process of other groups of Halbach magnetic components 1 is similar, and will not be described in detail here.

[0036] Therefore, for the Halbach magnetic assembly 1 in which the guide magnet 11 is non-magnetic and the non-guide magnet 12 is pre-magnetized, when magnetizing, the angle range between the length direction of the Halbach magnetic assembly 1 and the polarity direction of the magnetizing coil 31 is 35 to 45 degrees, and the magnetic moment values ​​of the guide magnet 11 and the non-guide magnet 12 after magnetization outside this angle range are unqualified. Of course, the qualified reference value of the magnetic moment is obtained according to the size of the guide magnet 11 and the non-guide magnet 12. Therefore, in other embodiments, if other sizes of guide magnets 11 and non-guide magnets 12 are used, the angle range between the length direction of the Halbach magnetic assembly 1 and the polarity direction of the magnetizing coil 31 will change, but it is still an acute angle.

[0037] Table 2 Magnetic moments of the Halbach magnetic assembly 1 after magnetization at different angles while the guide magnet is pre-magnetized and the non-magnetic guide magnet is not magnetized

[0038] Taking the Halbach magnetic assembly 1 in which the guide magnet 11 is pre-magnetized and the non-magnetic guide magnet 12 is non-magnetic as an example, Figure 5 As shown in Table 2, this embodiment uses three groups of Halbach magnetic components 1 to detect the magnetic moment values ​​before and after magnetization.

[0039] 1. When the angle between the polarity direction of the guide magnet 11 and the polarity direction of the magnetizing coil 31 is 25 degrees: In the first group of Halbach magnetic components 1, the magnetic moment of the non-guide magnet 12 before magnetization is 10.204, and the magnetic moment of the guide magnet 11 is 5.7486. After magnetization, the magnetic moment of the non-guide magnet 12 is 10.145, and the magnetic moment of the guide magnet 11 is 5.68.

[0040] In the second group of Halbach magnetic components 1, the magnetic moment of the non-guide magnet 12 before magnetization is 10.38, and the magnetic moment of the guide magnet 11 is 5.758. After magnetization, the magnetic moment of the non-guide magnet 12 is 10.345, and the magnetic moment of the guide magnet 11 is 5.6871.

[0041] In the third group of Halbach magnetic components 1, the magnetic moment of the non-guide magnet 12 before magnetization is 10.207, and the magnetic moment of the guide magnet 11 is 5.7647. After magnetization, the magnetic moment of the non-guide magnet 12 is 10.141, and the magnetic moment of the guide magnet 11 is 5.7182.

[0042] 2. When the angle between the polarity direction of the guide magnet 11 and the polarity direction of the magnetizing coil 31 is 30 degrees: In the first group of Halbach magnetic components 1, the magnetic moment of the non-guide magnet 12 before magnetization is 10.245, and the magnetic moment of the guide magnet 11 is 5.7534. After magnetization, the magnetic moment of the non-guide magnet 12 is 10.201, and the magnetic moment of the guide magnet 11 is 5.7231.

[0043] In the second group of Halbach magnetic components 1, the magnetic moment of the non-guide magnet 12 before magnetization is 10.177, and the magnetic moment of the guide magnet 11 is 5.7546. After magnetization, the magnetic moment of the non-guide magnet 12 is 10.146, and the magnetic moment of the guide magnet 11 is 5.714.

[0044] In the third group of Halbach magnetic components 1, the magnetic moment of the non-guide magnet 12 before magnetization is 10.108, and the magnetic moment of the guide magnet 11 is 5.749. After magnetization, the magnetic moment of the non-guide magnet 12 is 10.054, and the magnetic moment of the guide magnet 11 is 5.7356.

[0045] The specific qualified calculation formulas of the guide magnet 11 and the non-guide magnet 12 are as described above and will not be described in detail here.

[0046] Therefore, for the Halbach magnetic assembly 1 in which the guide magnet 11 is pre-magnetized and the non-guide magnet 12 is non-magnetized, when magnetizing, the angle range between the length direction of the Halbach magnetic assembly 1 and the polarity direction of the magnetizing coil 31 is 25 to 30 degrees, and the magnetic moment values ​​of the guide magnet 11 and the non-guide magnet 12 after magnetization outside this angle range are unqualified. Of course, the qualified reference value of the magnetic moment is obtained according to the size of the guide magnet 11 and the non-guide magnet 12. Therefore, in other embodiments, if other sizes of guide magnets 11 and non-guide magnets 12 are used, the angle range between the length direction of the Halbach magnetic assembly 1 and the polarity direction of the magnetizing coil 31 will change, but it is still an acute angle.

[0047] Of course, in addition to the magnetization angle, the magnitude of the magnetic field of the magnetization coil 31 also needs to be considered. When the entire Halbach magnetic assembly 1 forms an angle with the magnetization coil 31, the greater the field strength, the easier it is for the non-magnetized magnet 14 to be magnetized and saturated, and the impact on the magnetized magnet 13 will also increase. In other embodiments, the optimal magnetization angle and the magnitude of the magnetic field of the magnetization coil 31 need to be determined based on the shapes and sizes of the two magnets. This can be achieved by those skilled in the art and will not be described in detail.

[0048] Furthermore, in step S12, the bottom of the tooling slot is made of a magnetically conductive adsorption material, so that the magnetic magnet 13 and the non-magnetic magnet 14 can be automatically adsorbed in the tooling slot after being bonded and placed in the tooling slot, facilitating subsequent magnetization operations.

[0049] When the magnetic assembly is a combination 2 of multiple polarity obliquely oriented special-shaped magnets, such as Figures 8 to 16 As shown, the magnetization method is: S21: Each of the special-shaped magnets 21 is provided with a special-shaped surface 22 and a flat surface 23. The jig plate 4 is provided with a jig groove 41 matching the special-shaped surface 22. The plurality of special-shaped magnets 21 are placed in the jig groove 41, with the special-shaped surface 22 located at the bottom of the jig groove 41 and the flat surface 23 flush with the surface of the jig plate 4 (not shown in the figure); S22: placing the jig plate 4 together with the plurality of special-shaped magnets 21 into the segmented multi-pole magnetization fixture 32 for one-time saturation magnetization (the jig plate is not shown in the figure); S23: After the magnetization is completed, the jig plate 4 together with the plurality of special-shaped magnets 21 are taken out, and the adsorption plate 5 is placed on the surface of the jig plate 4 to adsorb the plurality of special-shaped magnets 21 from the jig grooves 41 of the jig plate 4 to the adsorption plate 5 through the flat surface 23 of the special-shaped magnets 21; S24: using the assembly tool 6 to assemble the plurality of special-shaped magnets 21 that have been saturated and magnetized on the adsorption plate 5 to form an assembly 2.

[0050] In step S21, this embodiment performs the following steps: Fig.15 The profiling jig plate 4 shown can ensure that the flat surface 23 of the plurality of shaped magnets 21 is flush with the surface of the jig plate 4, which is convenient for the next step of magnetization. At the same time, the method of placing the plurality of shaped magnets 21 in the jig plate 4 before magnetization can also solve the problem of polarity identification of the shaped magnets 21 during magnetization, and can also avoid collisions between the shaped magnets 21, thereby protecting the shaped magnets 21. Figure 6 As shown, the number of the special-shaped magnets 21 in this embodiment is three, the polarity orientations of the left and right magnets are oblique, and the polarity orientation of the middle magnet is consistent with the height direction of the magnet, but it is not limited to this.

[0051] In step S22, this embodiment adopts the existing Figure 7 The segmented multi-pole magnetizing fixture 32 shown is used to magnetize the special-shaped magnets 21 , and can ensure the accuracy of magnetization of each special-shaped magnet 21 .

[0052] In step S23, the present embodiment uses an adsorption plate 5 made of a magnetic conductive material to transfer the saturated magnetized special-shaped magnet 21 from the fixture plate 4 to the adsorption plate 5, such as Fig.16 As shown, the subsequent assembly process is simple to operate.

[0053] like Figures 8 to 14 As shown, the combined tooling 6 of step S24 includes a workbench 61 and a material placing plate 62, a material loading plate 63, a material loading pipe 64, a material pressing assembly 65 and a material pushing assembly 66 arranged on the workbench 61; The discharge plate 62 is provided with a plurality of discharge grooves 621 matching the special-shaped magnets 21. The adsorption plate 5 is placed on the discharge plate 62, and the special-shaped magnets 21 on the adsorption plate 5 are located in the discharge grooves 621. The loading plate 63 is arranged on one side of the discharge plate 62. The loading plate 63 is provided with a plurality of loading grooves 631 corresponding to the discharge grooves 621. The discharge grooves 621 are arranged horizontally and communicate with the loading grooves 631. The loading pipe 64 is arranged in the loading grooves 631. The pressing assembly 65 is disposed on the other side of the discharge plate 62 and is used to fix the adsorption plate 5 on the discharge plate 62; The pushing assembly 66 is disposed on the other side of the discharge plate 62 and is used to push the special-shaped magnets 21 in the discharge trough 621 into the loading pipe 64 of the loading plate 63 .

[0054] After step S23, the adsorption plate 5 is adsorbed with a plurality of saturated magnetized special-shaped magnets 21. The adsorption plate 5 and the special-shaped magnets 21 are placed on the discharge plate 62, and the plurality of special-shaped magnets 21 are located in the discharge slot 621. Fig. 9 and Fig.11 As shown, the special-shaped magnets 21 can be positioned, and the plurality of special-shaped magnets 21 in the discharge trough 621 can be pushed into the loading tube 64 of the loading trough 631 through the pushing assembly 66. Since the plurality of special-shaped magnets 21 after saturation magnetization can be adsorbed together, during the pushing process, the magnets in the discharge trough 621 are adsorbed together before entering the loading tube 64 of the loading trough 631. The structure is simple, and direct packaging of the magnetic assembly is realized, which is beneficial to subsequent processing.

[0055] like Figure 8 As shown, the workbench 61 includes a horizontal plate 611 and two vertical plates 612. The two vertical plates 612 are arranged on the front and rear sides of the horizontal plate 611. A clearance hole 613 is opened on the horizontal plate 611. The discharge plate 62 and the loading plate 63 are arranged on the top surface of the horizontal plate 611. The discharge trough 621 is located in the clearance hole 613, and the loading plate 63 is located on the left side of the clearance hole 613. The pressing assembly 65 is arranged on the top surface of the horizontal plate 611 and on the right side of the clearance hole 613. The pushing assembly 66 is arranged on the bottom surface of the horizontal plate 611 and on the right side of the clearance hole 613.

[0056] In this embodiment, a clearance hole 613 is provided on the horizontal plate 611 to ensure that the pusher assembly 66 on the bottom surface of the horizontal plate 611 can push the multiple special-shaped magnets 21 in the discharge groove 621 through the clearance hole 613, making full use of the space and making the entire structure more compact. Two vertical plates 612 are arranged on the front and rear sides of the horizontal plate 611 to provide stable support for the entire workbench 61.

[0057] like Fig. 9 and Fig.10As shown, the pushing assembly 66 includes a pushing cylinder 661 and a pushing plate 662. The pushing cylinder 661 is arranged on the bottom surface of the horizontal plate 611, and the output end of the pushing cylinder 661 is arranged horizontally. The pushing plate 662 is arranged at the output end of the pushing cylinder 661. A plurality of pushing blocks 663 matching the discharge trough 621 are arranged on the pushing plate 662, and the pushing blocks 663 reciprocate horizontally in the discharge trough 621.

[0058] In this embodiment, the push block 663 at the output end of the push cylinder 661 matches the size of the discharge trough 621, so that the pushing process of the special-shaped magnet 21 is smoother, and the efficiency of assembling the special-shaped magnet 21 is improved. By controlling the pushing stroke of the push cylinder 661, it can be ensured that the special-shaped magnet 21 accurately enters the loading tube 64.

[0059] like Figure 8 As shown, this embodiment further includes a handle valve 67, which is disposed on the horizontal plate 611 and connected to the push cylinder 661. The operation of the push cylinder 661 can be controlled by the handle valve 67, and the operation is simple.

[0060] like Fig.13 and Fig.14 As shown, the pressing assembly 65 includes a fixed seat 651, a pressing head 652, a connecting rod 653, a pressing handle 654 and a connecting piece 655. The fixed seat 651 is arranged on the top surface of the horizontal plate 611 and is located on the right side of the clearance hole 613. The pressing head 652 is fixed to the left end of the connecting rod 653, the right end of the connecting rod 653 is hinged to the left side of the fixed seat 651, the left end of the pressing handle 654 is hinged to the right end of the connecting rod 653, the right end of the pressing handle 654 is hinged to the right side of the fixed seat 651, one end of the connecting piece 655 is hinged to the middle part of the pressing handle 654, and the other end of the connecting piece 655 is hinged to the right side of the fixed seat 651.

[0061] In this embodiment, the pressing head 652 can be locked and unlocked on the adsorption plate 5 by operating the right end of the pressing handle 654, which is easy to operate. The pressing head 652, the connecting rod 653, the pressing handle 654 and the connecting piece 655 are cooperatively arranged on the fixed seat 651 to form a stable mechanical structure, ensuring that when the pushing assembly 66 pushes the special-shaped magnet 21, the adsorption plate 5 can be stably placed on the discharge plate 62, ensuring the smooth completion of the assembly process.

[0062] like Fig.13As shown, a recessed portion 6511 is provided in the middle of the fixed seat 651, and a protruding portion 6541 is provided in the middle of the pressing handle 654. Specifically, in this embodiment, the pressing assembly 65 is locked by pressing down the right end of the pressing handle 654. When locked, the pressing head 652 rests on the adsorption plate 5, and the protruding portion 6541 of the pressing handle 654 is located in the recessed portion 6511 in the middle of the fixed seat 651. The pressing assembly 65 is unlocked by lifting the right end of the pressing handle 654 upwards. When unlocked, the pressing head 652 moves up and away from the adsorption plate 5, and the left end of the pressing handle 654 and the right end of the connecting rod 653 are located in the recessed portion 6511 of the fixed seat 651, which is easy to operate.

[0063] like Fig.12 As shown, in this embodiment, a plurality of limit blocks 632 are respectively arranged on the left and right sides of the loading plate 63 in a horizontal direction, and the loading grooves 631 are formed between the plurality of limit blocks 632. The two ends of the loading tube 64 are respectively located in the loading grooves 631 on the left and right sides of the loading plate 63, while the middle part of the loading plate 63 is not provided with a limit block 632, so that the staff can load or remove the loading tube 64 from the middle part of the discharge plate 62 conveniently, and the design is ingenious.

[0064] 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.

[0065] 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 method for magnetizing a magnetic component, characterized in that: When the magnetic assembly is a Halbach magnetic assembly with two magnets, the magnetization method is: S11: The two magnets include a guiding magnet and a non-guiding magnet. One of the guiding magnet or the non-guiding magnet is magnetized to form a magnetic magnet, and the other non-guiding magnet or the guiding magnet is a non-magnetic magnet; S12: placing the magnetized magnet in a tooling slot corresponding to the size of the Halbach magnetic assembly, applying glue to the bonding surfaces of the magnetized magnet and the non-magnetic magnet and adsorbing them to each other to form a Halbach magnetic assembly; S13: magnetizing the Halbach magnetic assembly using a magnetizing coil, firstly aligning the polarity orientation of the guide magnet of the Halbach magnetic assembly with the polarity direction of the magnetizing coil in parallel and in accordance, and then rotating the Halbach magnetic assembly so that the angle between the polarity orientation of the guide magnet of the Halbach magnetic assembly and the polarity direction of the magnetizing coil is an acute angle, and the angle between the polarity orientation of the non-guide magnet and the polarity direction of the magnetizing coil is an acute angle, and after magnetization, the polarity directions of the guide magnet and the non-guide magnet are perpendicular to each other; When the magnetic assembly is a combination of multiple polarity obliquely oriented special-shaped magnets, the magnetization method is: S21: Each special-shaped magnet is provided with a special-shaped surface and a flat surface, and a fixture plate is provided with a fixture groove matching the special-shaped surface, and a plurality of special-shaped magnets are placed in the fixture groove, with the special-shaped surface located at the bottom of the fixture groove and the flat surface flush with the surface of the fixture plate; S22: Place the fixture plate together with a plurality of special-shaped magnets into a segmented multi-pole magnetizing fixture for one-time saturation magnetization; S23: After the magnetization is completed, the jig plate together with the plurality of special-shaped magnets are taken out, and the adsorption plate cover is placed on the surface of the jig plate, and the plurality of special-shaped magnets are adsorbed from the jig grooves of the jig plate to the adsorption plate through the flat surface of the special-shaped magnets; S24: Assemble the plurality of special-shaped magnets that have been saturated and magnetized on the adsorption plate into an assembly using an assembly tool.

2. A method for magnetizing a magnetic component as claimed in claim 1, characterized in that: In the step S12, the bottom of the tooling slot is made of magnetically conductive adsorption material.

3. A method for magnetizing a magnetic component as claimed in claim 1, characterized in that: The combined tooling of step S24 includes a workbench and a material placing plate, a material loading plate, a material loading pipe, a material pressing assembly and a material pushing assembly arranged on the workbench; The discharge plate is provided with a plurality of discharge grooves matching the special-shaped magnets, the adsorption plate is placed on the discharge plate, and the special-shaped magnets on the adsorption plate are located in the discharge grooves; The loading plate is arranged on one side of the discharge plate, and a plurality of loading grooves corresponding to the discharge grooves are arranged on the loading plate, the discharge grooves are arranged horizontally and connected to the loading grooves, and the loading pipes are arranged in the loading grooves; The pressing assembly is arranged on the other side of the discharge plate and is used to fix the adsorption plate on the discharge plate; The pushing assembly is arranged on the other side of the discharge plate and is used for pushing the special-shaped magnets in the discharge trough into the loading pipe of the loading plate.

4. A method for magnetizing a magnetic component as claimed in claim 3, characterized in that: The workbench includes a horizontal plate and two vertical plates, the two vertical plates are arranged on the front and rear sides of the horizontal plate, a clearance hole is opened on the horizontal plate, a discharge plate and a loading plate are arranged on the top surface of the horizontal plate, the discharge trough is located in the clearance hole, the loading plate is located on the left side of the clearance hole, the pressing assembly is arranged on the top surface of the horizontal plate and on the right side of the clearance hole, and the pushing assembly is arranged on the bottom surface of the horizontal plate and on the right side of the clearance hole.

5. A method for magnetizing a magnetic component as claimed in claim 4, characterized in that: The pushing assembly includes a pushing cylinder and a pushing plate. The pushing cylinder is arranged on the bottom surface of the horizontal plate. The output end of the pushing cylinder is arranged horizontally. The pushing plate is arranged at the output end of the pushing cylinder. A plurality of pushing blocks matching the discharge trough are arranged on the pushing plate. The pushing blocks reciprocate horizontally in the discharge trough.

6. A method for magnetizing a magnetic component as claimed in claim 5, characterized in that: It also includes a handle valve, which is arranged on the transverse plate and connected to the pushing cylinder.

7. A method for magnetizing a magnetic component as claimed in claim 4, characterized in that: The pressing assembly includes a fixed seat, a pressing head, a connecting rod, a pressing handle and a connecting piece. The fixed seat is arranged on the top surface of the horizontal plate and is located on the right side of the clearance hole. The pressing head is fixed to the left end of the connecting rod, the right end of the connecting rod is hinged to the left side of the fixed seat, the left end of the pressing handle is hinged to the right end of the connecting rod, the right end of the pressing handle is hinged to the right side of the fixed seat, one end of the connecting piece is hinged to the middle part of the pressing handle, and the other end of the connecting piece is hinged to the right side of the fixed seat.

8. A method for magnetizing a magnetic component as claimed in claim 7, characterized in that: A recessed portion is provided in the middle of the fixing seat, and a protruding portion is provided in the middle of the pressing handle. When locked, the pressing head rests on the adsorption plate, and the protruding portion of the pressing handle is located in the recessed portion in the middle of the fixing seat. When unlocked, the pressing head is away from the adsorption plate, and the left end of the pressing handle and the right end of the connecting rod are located in the recessed portion of the fixing seat.

9. A method for magnetizing a magnetic component as claimed in claim 3, characterized in that: A plurality of limit blocks are respectively arranged on the left and right sides of the loading plate in a corresponding manner, and the plurality of limit blocks form the loading troughs in pairs, and the two ends of the loading pipe are respectively located in the loading troughs on the left and right sides of the loading plate.

Images