A magnetizing method for a magnetic component

Abstract

The present invention discloses a magnetizing method for a magnetic assembly. When the magnetic assembly is a Halbach magnetic assembly consisting of two magnets, the magnetizing method is as follows: S11: one magnet is a magnetized magnet and the other is a non-magnetic magnet; S12: the two magnets are bonded together to form the Halbach magnetic assembly; S13: magnetization is performed using a magnetizing coil, with the polarity directions of the Halbach magnetic assembly and the magnetizing coil forming an acute angle. When the magnetic assembly is an assembly of multiple shaped magnets with oblique polarity orientations, the magnetizing method is as follows: S21: the multiple shaped magnets are placed in a jig slot of matching shape, with the flat surfaces of the shaped magnets flush with the surface of the jig plate; S22: magnetization is performed using a segmented multi-pole magnetizing fixture; S23: the multiple magnetized shaped magnets are transferred to an adsorption plate; and S24: assembly is performed using a combined tooling to form the assembly. The present invention effectively improves the magnetizing efficiency of the magnetic assembly, ensures the production quality of the magnetic assembly, and reduces the labor burden.

Description

Technical Field

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

[0002] Magnetization of magnetic components is a critical step in the manufacturing process, directly impacting their overall performance. There are two types of magnetic components currently available on the market: one is a Halbach component composed of two rectangular magnets, whose bonding process relies primarily on manual labor and tooling; the other is an assembly of multiple shaped magnets with oblique polarity orientations, requiring a more complex manufacturing process.

[0003] For Halbach magnetic assemblies with two magnets, there are two main bonding methods available: one is to manually arrange the two magnets on an adsorption plate according to the correct polarity after saturation magnetization, then apply glue on the bonding surface, and then place the magnets in a pressure-holding fixture for fixation; the other method is to also place the two magnets in a fixture slot after saturation magnetization, apply glue on the bonding surface using a glue dispenser or manually, and then perform pressure-holding positioning.

[0004] However, both methods have complex problems of pressure maintenance 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 initially solidified. This undoubtedly reduces assembly efficiency and increases the number and cost of tooling.

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

[0008] To achieve the above-mentioned object, the present invention provides a solution: a method for magnetizing a magnetic component, characterized in that:

[0009] When the magnetic assembly is a Halbach magnetic assembly with two magnets, the magnetization method is:

[0010] S11: The two magnets include a guide magnet and a non-guide magnet, one of the guide magnet or the non-guide magnet is magnetized to form a magnetic magnet, and the other non-guide magnet or the guide magnet is a non-magnetic magnet;

[0011] S12: Place the magnetized magnet in a tooling slot corresponding to the size of the Halbach magnetic assembly. Apply glue to the bonding surfaces of the magnetized magnet and the non-magnetic magnet so that they adhere to each other to form a Halbach magnetic assembly.

[0012] S13: Using the magnetizing coil to magnetize the Halbach magnetic assembly, first align the polarity of the guide magnet of the Halbach magnetic assembly with that of the magnetizing coil, and then rotate the Halbach magnetic assembly so that the angle between the polarity of the guide magnet of the Halbach magnetic assembly and the polarity of the magnetizing coil is an acute angle, and the angle between the polarity of the non-guide magnet and the polarity of the magnetizing coil is an acute angle. After magnetization, the polarities of the guide magnet and the non-guide magnet are perpendicular to each other.

[0013] When the magnetic assembly is an assembly of multiple polarity obliquely oriented special-shaped magnets, the magnetization method is:

[0014] S21: Each special-shaped magnet is provided with a special-shaped surface and a flat surface. The jig plate is provided with a jig groove that matches the special-shaped surface. Multiple special-shaped magnets are placed in the jig groove, with the special-shaped surface located at the bottom of the jig groove and the flat surface flush with the surface of the jig plate.

[0015] S22: Place the fixture plate together with multiple special-shaped magnets into a segmented multi-pole magnetizing fixture for one-time saturation magnetization;

[0016] S23: After the magnetization is completed, the jig plate and the plurality of special-shaped magnets are removed, and an adsorption plate cover is placed on the surface of the jig plate. 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;

[0017] S24: Use an assembly tool to assemble multiple special-shaped magnets that have completed saturation magnetization on the adsorption plate to form an assembly.

[0018] Preferably, in step S12, the bottom of the tooling slot is made of a magnetic adsorption material.

[0019] In a preferred embodiment, the combined tooling of step S24 includes a workbench and a discharge plate, a loading plate, a loading pipe, a pressing assembly, and a pushing assembly arranged on the workbench;

[0020] The discharge plate is provided with a plurality of discharge slots 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 slots.

[0021] The loading plate is arranged on one side of the discharge plate, and a plurality of charging troughs corresponding to the discharge troughs are provided on the loading plate. The discharge troughs are arranged horizontally and connected to the charging troughs, and the charging pipes are arranged in the charging troughs;

[0022] 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;

[0023] The pushing assembly is arranged on the other side of the discharge plate and is used to push the special-shaped magnets in the discharge trough into the loading pipe of the loading plate.

[0024] 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, the discharge plate and the 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.

[0025] In a preferred embodiment, 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, and the pushing plate is arranged at the output end of the pushing cylinder. Several pushing blocks matching the discharge trough are provided on the pushing plate, and the pushing blocks move back and forth horizontally in the discharge trough.

[0026] The preferred solution further comprises a handle valve, which is arranged on the transverse plate and connected to the pushing cylinder.

[0027] In a preferred embodiment, the pressing assembly includes a fixed seat, a pressure 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 pressure 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.

[0028] In a preferred embodiment, a recess is provided in the middle of the fixing seat, and a protrusion is provided in the middle of the pressing handle. When locked, the pressure head rests on the adsorption plate, and the protrusion of the pressing handle is located in the recess in the middle of the fixing seat. When unlocked, the pressure 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.

[0029] Preferably, a plurality of limit blocks are respectively arranged on the left and right sides of the charging plate, and the charging troughs are formed between the plurality of limit blocks. Both ends of the charging pipe are respectively located in the charging troughs on the left and right sides of the charging plate.

[0030] After adopting the above solution, the beneficial effects of the present invention are:

[0031] For the Halbach magnetic assembly with two magnets, the present invention first magnetizes one of the guide magnets or non-guide magnets to form a magnetic magnet, while the other non-guide magnet or guide magnet is not magnetized 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 slot can be automatically adsorbed, and there is no repulsive force between the two magnets due to misalignment, 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, guarantee product quality, and make subsequent magnetization using the magnetization coil more convenient, thereby improving magnetization efficiency.

[0032] For assemblies of multiple polarity-obliquely oriented, special-shaped magnets, the present invention neatly places each special-shaped magnet in a fixture slot on a fixture plate. Because the shape of the fixture slot matches that 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 a one-time saturation magnetization, the accuracy of the polarity direction of each special-shaped magnet after magnetization can be ensured, effectively improving magnetization efficiency. After magnetization, the present invention uses the flat surfaces of the special-shaped magnets to adsorb the multiple special-shaped magnets from the fixture slots on the fixture plate onto the adsorption plate. Finally, a combined tooling assembly is used to assemble the multiple special-shaped magnets on the adsorption plate. This simple operation helps reduce the burden of manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of multiple existing polarity obliquely oriented special-shaped magnets being adsorbed and arranged and then manually rotated into neat strips;

[0034] Figure 2 This is a schematic diagram of the uneven adsorption arrangement of multiple existing polarity obliquely oriented special-shaped magnets;

[0035] Figure 3 is a schematic diagram of the Halbach magnetic assembly of two magnets after bonding in an embodiment of the present invention;

[0036] Figure 4 This 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 unmagnetized, 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 magnetizing coil is 40 degrees;

[0037] Figure 5 This 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 pre-magnetized, while the non-guide magnet is unmagnetized, and the angle between the length direction of the Halbach magnetic assembly and the polarity direction of the magnetizing coil is 25 degrees;

[0038] Figure 6Schematic diagram of an assembly of three special-shaped magnets in an embodiment of the present invention, wherein two special-shaped magnets have oblique polarity orientations;

[0039] Figure 7 Schematic diagram of magnetizing an assembly of three special-shaped magnets using a segmented multi-pole magnetizing fixture in an embodiment of the present invention;

[0040] Figure 8 Schematic diagram of an embodiment of the present invention using an assembly tool to assemble multiple special-shaped magnets that have completed saturation magnetization on an adsorption plate to form an assembly;

[0041] Figure 9 This is a bottom view of an assembly formed by assembling multiple special-shaped magnets that have been saturated and magnetized on an adsorption plate using an assembly tool in an embodiment of the present invention;

[0042] Figure 10 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 pipe in a loading trough according to an embodiment of the present invention;

[0043] Figure 11 1. It is a bottom view of the unloading plate in the embodiment of the present invention;

[0044] Figure 12 is a schematic diagram of a charging plate in an embodiment of the present invention;

[0045] Figure 13 Schematic diagram of a material pressing assembly according to an embodiment of the present invention;

[0046] Figure 14 Schematic diagram of the material pressing assembly with the material pressing handle removed in an embodiment of the present invention;

[0047] Figure 15 is a schematic diagram of a jig plate according to an embodiment of the present invention;

[0048] Figure 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.

[0049] Description of labels:

[0050] 1', polar oblique orientation special-shaped magnet;

[0051] 1. Halbach magnetic assembly; 11. Guide magnet; 12. Non-guide magnet; 13. Magnetic magnet; 14. Non-magnetic magnet;

[0052] 2. Assembly; 21. Special-shaped magnet; 22. Special-shaped surface; 23. Flat surface;

[0053] 31. Magnetizing coil; 32. Segmented multi-pole magnetizing fixture;

[0054] 4. Jig plate; 41. Jig slot;

[0055] 5. Adsorption board;

[0056] 6. Assembled tooling; 61. Workbench; 62. Unloading plate; 63. Loading plate; 64. Loading pipe; 65. Pressing assembly; 66. Pushing assembly; 67. Handle valve;

[0057] 611, horizontal board; 612, vertical board; 613, clearance hole;

[0058] 621, discharge trough;

[0059] 631, loading chute; 632, limit block;

[0060] 651, fixed seat; 652, pressing head; 653, connecting rod; 654, pressing handle; 655, connecting piece;

[0061] 661, push cylinder; 662, push plate; 663, push block;

[0062] 6511, recessed portion; 6541, protruding portion. DETAILED DESCRIPTION

[0063] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0064] This embodiment provides a magnetizing method for 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:

[0065] 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.

[0066] S12: Place the magnetized magnet 13 in a tooling slot (not shown) corresponding to the size of the Halbach magnetic assembly 1. Apply glue to the bonding surfaces of the magnetized magnet 13 and the non-magnetic magnet 14 so that they adhere to each other to form the Halbach magnetic assembly 1.

[0067] S13: Use the magnetizing coil 31 to magnetize the Halbach magnetic assembly 1 (the tooling slot is not shown in the figure). First, the polarity orientation of the guide magnet 11 of the Halbach magnetic assembly 1 is parallel and consistent with the polarity direction of the magnetizing coil 31. Then, the Halbach magnetic assembly 1 is rotated 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 acute, and the angle between the polarity orientation of the non-guide magnet 12 and the polarity direction of the magnetizing coil 31 is acute. After magnetization, the polarity directions of the guide magnet 11 and the non-guide magnet 12 are perpendicular to each other.

[0068] like Figure 3 As shown, the guide magnet 11 and the non-guide magnet 12 of this embodiment are both rectangular in shape, with the length, width, and height dimensions of the guide magnet 11 being 4.5×2.68×3.56 mm, and the length, width, and height dimensions of the non-guide magnet 12 being 7.94×3.56×2.68 mm. For a Halbach magnetic assembly 1 with two regular magnets, the polarity orientation of the guide magnet 11 is generally along the length of the guide magnet 11, while the polarity orientation of the non-guide magnet 12 is generally along the height of the non-guide magnet 12. Therefore, of the two magnets in the Halbach magnetic assembly 1 of this embodiment, the PC value (magnetic permeability coefficient) of the guide magnet 11 is greater than that of the non-guide magnet 12. During the subsequent magnetization process, the guide magnet 11 will be more easily saturated and less likely to demagnetize. Specifically, after one of the two magnets is magnetized and the other is not magnetized and bonded together, if the polarity of the non-magnetized magnet 14 is parallel to the polarity 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 become unsaturated from saturation.

[0069] In step S13 of this embodiment, the Halbach magnetic assembly 1 rotates counterclockwise. Of course, in other embodiments, it can also rotate clockwise. The angle between the polarity direction of the Halbach magnetic assembly 1 and the magnetizing coil 31 in step S13 is further explained below.

[0070] 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

[0071]

[0072] 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 assemblies 1 to detect the magnetic moment values before and after magnetization.

[0073] 1. When the angle between the polarity orientation of the guide magnet 11 and the polarity direction of the magnetizing coil 31 is 35 degrees:

[0074] In the first group of Halbach magnetic assemblies 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.

[0075] In the second group of Halbach magnetic assemblies 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.

[0076] In the third group of Halbach magnetic assemblies 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.

[0077] 2. When the angle between the polarity orientation of the guide magnet 11 and the polarity direction of the magnetizing coil 31 is 40 degrees:

[0078] In the first group of Halbach magnetic assemblies 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.

[0079] In the second group of Halbach magnetic assemblies 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.

[0080] In the third group of Halbach magnetic assemblies 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.

[0081] 3. When the angle between the polarity orientation of the guide magnet 11 and the polarity direction of the magnetizing coil 31 is 45 degrees:

[0082] In the first group of Halbach magnetic assemblies 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.

[0083] In the second group of Halbach magnetic assemblies 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.

[0084] In the third group of Halbach magnetic assemblies 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.

[0085] 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%.

[0086] Specifically, taking the first set of Halbach magnetic assemblies 1 as an example, substituting the guide magnet 11 into the calculation formula yields: [(5.7698 - 5.7549) / 5.7698] = 0.26% < 1%. Substituting the non-guide magnet 12 into the calculation formula yields: [(10.185 - 10.162) / 10.185] = 0.23% < 1%. The calculation process for the other sets of Halbach magnetic assemblies 1 is similar and will not be detailed here.

[0087] Therefore, for a Halbach magnetic assembly 1 in which the guide magnet 11 is unmagnetized and the non-guide magnet 12 is pre-magnetized, the angle between the length direction of the Halbach magnetic assembly 1 and the polarity direction of the magnetizing coil 31 during magnetization is within a range of 35 to 45 degrees. Magnetization outside this angle range will result in unqualified magnetic moments for both the guide magnet 11 and the non-guide magnet 12. Of course, the qualified reference value for magnetic moment is determined by the dimensions of the guide magnet 11 and the non-guide magnet 12. Therefore, in other embodiments, if other dimensions of the guide magnet 11 and the non-guide magnet 12 are used, the angle between the length direction of the Halbach magnetic assembly 1 and the polarity direction of the magnetizing coil 31 may vary, but it will still be an acute angle.

[0088] Table 2 Magnetic moments of the Halbach magnetic assembly 1 after magnetization at different angles when the guide magnet is pre-magnetized and the non-magnetic guide magnet is not magnetized

[0089]

[0090] 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 assemblies 1 to detect the magnetic moment values before and after magnetization.

[0091] 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:

[0092] In the first group of Halbach magnetic assemblies 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.

[0093] In the second group of Halbach magnetic assemblies 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.

[0094] In the third group of Halbach magnetic assemblies 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.

[0095] 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:

[0096] In the first group of Halbach magnetic assemblies 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.

[0097] In the second group of Halbach magnetic assemblies 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.

[0098] In the third group of Halbach magnetic assemblies 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.

[0099] The specific calculation formulas for the qualified guide magnets 11 and the non-guide magnets 12 are as described above and will not be described in detail here.

[0100] Therefore, for a Halbach magnetic assembly 1 in which the guide magnet 11 is pre-magnetized and the non-guide magnet 12 is unmagnetized, the angle between the length of the Halbach magnetic assembly 1 and the polarity of the magnetizing coil 31 during magnetization is between 25 and 30 degrees. Magnetization outside this angle range will result in unqualified magnetic moments for both the guide magnet 11 and the non-guide magnet 12. Of course, the qualified reference value for magnetic moment is determined by the dimensions of the guide magnet 11 and the non-guide magnet 12. Therefore, in other embodiments, if other dimensions of the guide magnet 11 and the non-guide magnet 12 are used, the angle between the length of the Halbach magnetic assembly 1 and the polarity of the magnetizing coil 31 will vary, but will still be an acute angle.

[0101] Of course, in addition to the magnetization angle, the magnetic field strength of the magnetization coil 31 also needs to be considered. When the Halbach magnetic assembly 1 forms an angle with the magnetization coil 31, the greater the magnetic field strength, the easier it is for the non-magnetized magnet 14 to reach saturation, and the greater the impact on the magnetized magnet 13. In other embodiments, the optimal magnetization angle and the magnetic field strength of the magnetization coil 31 need to be determined based on the shapes and sizes of the two magnets. This is within the capabilities of those skilled in the art and will not be further elaborated.

[0102] 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.

[0103] When the magnetic assembly is a combination of multiple polarity obliquely oriented special-shaped magnets 2, such as Figures 8 to 16 As shown, the magnetization method is:

[0104] 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 that matches 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);

[0105] S22: placing the jig plate 4 together with the plurality of special-shaped magnets 21 into the segmented multi-pole magnetizing fixture 32 for one-time saturation magnetization (the jig plate is not shown in the figure);

[0106] S23: After the magnetization is completed, the jig plate 4 together with the plurality of special-shaped magnets 21 are removed, and the adsorption plate 5 is placed on the surface of the jig plate 4. The plurality of special-shaped magnets 21 are adsorbed from the jig grooves 41 of the jig plate 4 to the adsorption plate 5 through the flat surfaces 23 of the special-shaped magnets 21;

[0107] S24: using the assembly tool 6 to assemble the plurality of special-shaped magnets 21 that have completed saturation magnetization on the adsorption plate 5 to form an assembly 2.

[0108] In step S21, this embodiment performs the following steps: Figure 15 The contoured jig plate 4 shown can ensure that the flat surfaces 23 of the plurality of special-shaped magnets 21 are flush with the surface of the jig plate 4, facilitating the magnetization operation in the next step. At the same time, the method of placing the plurality of special-shaped magnets 21 on the jig plate 4 before magnetization can also solve the problem of polarity identification of the special-shaped magnets 21 during magnetization, and can also avoid collisions between the special-shaped magnets 21, thereby protecting the special-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 is not limited thereto.

[0109] 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 , thereby ensuring the accuracy of magnetization of each special-shaped magnet 21 .

[0110] In step S23, the embodiment transfers the saturated magnetized special-shaped magnet 21 from the fixture plate 4 to the adsorption plate 5 through the adsorption plate 5 made of magnetic conductive material. Figure 16 As shown, the subsequent assembly process is simple to operate.

[0111] like Figures 8 to 14 As shown, the combined tooling 6 of step S24 includes a workbench 61 and a discharge plate 62, a loading plate 63, a loading pipe 64, a pressing assembly 65 and a pushing assembly 66 arranged on the workbench 61;

[0112] The discharge plate 62 is provided with a plurality of discharge slots 621 that match 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 slots 621.

[0113] The loading plate 63 is arranged on one side of the discharge plate 62. The loading plate 63 is provided with a plurality of charging grooves 631 corresponding to the discharge grooves 621. The discharge grooves 621 are arranged horizontally and communicate with the charging grooves 631. The charging pipe 64 is arranged in the charging grooves 631.

[0114] The pressing assembly 65 is provided on the other side of the discharge plate 62 and is used to fix the adsorption plate 5 on the discharge plate 62;

[0115] 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 charging pipe 64 of the charging plate 63 .

[0116] After step S23, the adsorption plate 5 is adsorbed with multiple special-shaped magnets 21 that have completed saturation magnetization. The adsorption plate 5 and the special-shaped magnets 21 are placed on the discharge plate 62, and the multiple special-shaped magnets 21 are located in the discharge trough 621. Figure 9 and Figure 11 As shown, the special-shaped magnets 21 can be positioned, and the pushing assembly 66 can push the multiple special-shaped magnets 21 in the discharge trough 621 into the loading tube 64 of the loading trough 631. Since the multiple special-shaped magnets 21 after saturation magnetization can be attracted to each other, during the pushing process, the magnets in the discharge trough 621 are attracted to each other before entering the loading tube 64 of the loading trough 631. This simple structure realizes direct packaging of the magnetic components, which is convenient for subsequent processing.

[0117] 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. 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.

[0118] 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 trough 621 through the clearance hole 613, thereby fully utilizing the space and making the entire structure more compact. Two vertical plates 612 are provided on the front and rear sides of the horizontal plate 611 to provide stable support for the entire workbench 61.

[0119] like Figure 9 and Figure 10 As 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 provided on the pushing plate 662, and the pushing blocks 663 move back and forth horizontally in the discharge trough 621.

[0120] In this embodiment, the push block 663 at the output end of the push cylinder 661 matches the size of the discharge trough 621, making the pushing process of the special-shaped magnet 21 smoother and improving the efficiency of assembling the special-shaped magnet 21. By controlling the pushing stroke of the push cylinder 661, it is possible to ensure that the special-shaped magnet 21 accurately enters the loading tube 64.

[0121] like Figure 8 As shown, this embodiment further includes a handle valve 67 , which is disposed on the transverse 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.

[0122] like Figure 13 and Figure 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, and 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, and 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 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.

[0123] 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.

[0124] like Figure 13 As shown, a recessed portion 6511 is provided in the middle of the fixing 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 pressure 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 fixing seat 651. The pressing assembly 65 is unlocked by lifting the right end of the pressing handle 654 upward. When unlocked, the pressure head 652 moves upward 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 fixing seat 651, which is easy to operate.

[0125] like Figure 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 troughs 631 are formed between the plurality of limit blocks 632. The two ends of the loading tube 64 are respectively located in the loading troughs 631 on the left and right sides of the loading plate 63, while the limit block 632 is not provided in the middle of the loading plate 63, so that the staff can conveniently load or remove the loading tube 64 from the middle of the discharge plate 62. The design is ingenious.

[0126] The directional terms mentioned in this specification are defined relative to the structures shown in the drawings. They are relative concepts and may vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0127] The above description is only a preferred embodiment of the present invention and is not intended to limit the design of this case. Any equivalent changes made based on the key design of this case shall fall within the scope of protection 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 guide magnet and a non-guide magnet, one of the guide magnet or the non-guide magnet is magnetized to form a magnetic magnet, and the other non-guide magnet or the guide magnet is a non-magnetic magnet; S12: Place the magnetized magnet in a tooling slot corresponding to the size of the Halbach magnetic assembly. Apply glue to the bonding surfaces of the magnetized magnet and the non-magnetic magnet so that they adhere to each other to form a Halbach magnetic assembly. S13: Use the magnetizing coil to magnetize the Halbach magnetic assembly. First, make the polarity orientation of the guide magnet of the Halbach magnetic assembly parallel and consistent with the polarity direction of the magnetizing coil. Then rotate 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. After magnetization, the polarity directions of the guide magnet and the non-guide magnet are perpendicular to each other.

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

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