Magnetization method and magnetization device

Abstract

To provide a magnetization method capable of magnetizing a magnetic body to create a magnetic orientation in a direction tilted with respect to a preset direction.SOLUTION: A magnetization method in an embodiment includes: a step of arranging multiple magnetic materials (6) including a magnetic material (61) that may produce a magnetic orientation in a direction tilted with respect to a second direction of the magnetic orientation orthogonal to at least one first direction; a first magnetization step of magnetizing the magnetic material (6) between a first magnetized part (24) and a second magnetized part (25) by forming a magnetic path between the first magnetized part (24) and second magnetized part (25) via a magnetic material (61) that may generate a magnetic orientation in a direction tilted with respect to the second direction; a second magnetization step of magnetizing a magnetic material (63) that may generate a magnetic orientation in a second direction by forming a magnetic path via the magnetic material (63) that may generate a magnetic orientation in the second direction.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a magnetization method and a magnetization device, for example, a method and device for magnetizing a plurality of magnetic bodies arranged in a first direction to form a Halbach array magnet. [Background technology]

[0002] In recent years, rotors with Halbach-arranged magnets have been put to practical use. As disclosed in Patent Document 1, for example, the Halbach array is formed by alternatingly arranging main magnets that generate magnetic orientation in the radial direction of the rotor (a preset direction) and auxiliary magnets that generate magnetic orientation in a direction perpendicular to the magnetic orientation of the main magnets. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 11-308793 Summary of the Invention [Problem to be solved by the invention]

[0004] The present applicant has found the following problem: It is generally difficult to magnetize a magnetic body so that magnetic orientation occurs in a direction tilted relative to a preset direction.

[0005] The present disclosure has been made in consideration of such problems, and provides a magnetizing method and magnetizing device that can magnetize a magnetic body so that magnetic orientation occurs in a direction tilted relative to a preset direction. [Means for solving the problem]

[0006] A magnetization method according to one aspect of the present disclosure is a method for magnetizing a plurality of magnetic bodies arranged in a first direction to form a Halbach array magnet, the method comprising: Arranging the plurality of magnetic bodies so that at least one of the magnetic bodies can generate magnetic orientation in a direction tilted with respect to a second direction orthogonal to the first direction; a first magnetizing step of arranging a first magnetized portion and a second magnetized portion at an interval in the first direction in one region of regions sandwiching the plurality of magnetic bodies in the second direction, and forming a magnetic path between the first magnetized portion and the second magnetized portion via a magnetic body that can generate magnetic orientation in a direction inclined with respect to the second direction, thereby magnetizing the magnetic body between the first magnetized portion and the second magnetized portion; a second magnetizing step of arranging a third magnetizing unit in one of the regions sandwiching the plurality of magnetic bodies, and forming a magnetic path through the magnetic bodies that can generate magnetic orientation in the second direction among the plurality of magnetic bodies, thereby magnetizing the magnetic bodies that can generate magnetic orientation in the second direction; Equipped with.

[0007] In the above-described magnetizing method, it is preferable that one of the first magnetized portion or the second magnetized portion is arranged so that, when viewed from the second direction, it protrudes from the magnetic body that can generate magnetic orientation in a direction inclined with respect to the second direction to the opposite side of the other of the first magnetized portion or the second magnetized portion.

[0008] In the above-mentioned magnetization method, it is preferable that the magnetic body is arranged in a region opposite to the region where the first magnetized portion and the second magnetized portion are arranged in the region sandwiching the multiple magnetic bodies, so as to face the magnetic body that can generate magnetic orientation in a direction tilted with respect to the second direction in the second direction.

[0009] In the above-described magnetization method, it is preferable that the magnetic bodies capable of generating a magnetic orientation in a direction inclined with respect to the second direction are arranged at intervals in the first direction.

[0010] In the above-described magnetizing method, it is preferable that a fourth magnetized portion is arranged in a region sandwiching the plurality of magnetic bodies, opposite to a region in which the third magnetized portion is arranged, so as to face the third magnetized portion in the second direction.

[0011] In the above-described magnetizing method, it is preferable that a magnetic flux loop is formed between the first magnetized portion and the second magnetized portion via a magnetic body that can generate magnetic orientation in a direction inclined with respect to the second direction.

[0012] The above-mentioned magnetizing method includes arranging the third magnetized portions at intervals in the first direction, It is preferable that the interval between the third magnetized portions in the first direction is wider than the interval between the first magnetized portions and the second magnetized portions in the first direction.

[0013] In the above-described magnetization method, it is preferable that the first direction is a preset axial direction or circumferential direction.

[0014] A magnetizing device according to one aspect of the present disclosure is a device that magnetizes a plurality of magnetic bodies arranged in a first direction to form a Halbach array magnet, a first magnetized portion and a second magnetized portion that are arranged at an interval in the first direction in one of regions that sandwich the plurality of magnetic bodies in the second direction so as to form a magnetic path via the magnetic body that can generate magnetic orientation in a direction that is inclined with respect to a second direction that is orthogonal to the first direction, when the plurality of magnetic bodies are arranged so as to include at least one magnetic body that can generate magnetic orientation in a direction that is inclined with respect to a second direction that is orthogonal to the first direction; a third magnetized portion disposed in one of regions sandwiching the plurality of magnetic bodies so as to form a magnetic path via the magnetic body among the plurality of magnetic bodies that can generate magnetic orientation in the second direction; and Equipped with.

[0015] It is preferable that the above-mentioned magnetizing device includes a magnetic body that is arranged in a region other than the region where the first magnetizing portion and the second magnetizing portion are arranged in the region sandwiching the multiple magnetic bodies, so as to face the magnetic body that can generate magnetic orientation in a direction inclined with respect to the second direction in the second direction.

[0016] It is preferable that the above-mentioned magnetizing device includes a fourth magnetizing portion arranged in a region sandwiching the plurality of magnetic bodies, opposite the region in which the third magnetizing portion is arranged, so as to face the third magnetizing portion in the second direction. [Effects of the Invention]

[0017] According to the present disclosure, it is possible to realize a magnetizing method and a magnetizing device that can magnetize a magnetic body so that magnetic orientation occurs in a direction tilted relative to a preset direction. [Brief explanation of the drawings]

[0018] [Figure 1] FIG. 3 is a diagram illustrating a state in which a first magnetization step is performed on a magnetic body using the magnetization device of the first embodiment. [Figure 2] FIG. 4 is a diagram illustrating a state in which a second magnetization step is performed on a magnetic body by using the magnetization device of the first embodiment. [Figure 3] FIG. 10 is a diagram illustrating a state in which a first magnetization step is performed on a magnetic body by using the magnetization device of the second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0019] Specific embodiments to which the present disclosure is applied will be described in detail below with reference to the drawings. However, the present disclosure is not limited to the following embodiments. In addition, the following description and drawings have been simplified as appropriate for clarity of explanation.

[0020] <First Embodiment> First, the configuration of the magnetizing device of the present embodiment will be described. Fig. 1 is a diagram showing how a first magnetizing step is performed on a magnetic body using the magnetizing device of the present embodiment. Fig. 2 is a diagram showing how a second magnetizing step is performed on a magnetic body using the magnetizing device of the present embodiment.

[0021] 1 and 2, the magnetizing device 1 and the magnetic body 6 to be magnetized are partially extracted and simplified. In the following description, for clarity, a three-dimensional (XYZ) coordinate system will be used.

[0022] 1 and 2, the magnetizing device 1 of the present embodiment includes a first magnetizer 2, a second magnetizer 3, a power source 4, and a control device 5. The first magnetizer 2 is used when performing a first magnetizing step, as will be described later. As shown in FIG. 1, the first magnetizer 2 includes a magnetizing yoke 21, a first coil 22, and a second coil 23.

[0023] The magnetizing yoke 21 is, for example, a comb-shaped magnetic body that is open on the positive side of the X-axis, as shown in Fig. 1. However, the shape of the magnetizing yoke 21 will be described in detail later, but it may be any shape that allows a magnetic flux loop to be formed via first magnetic bodies 61 that can generate magnetic orientation in a direction inclined with respect to the X-axis direction and are arranged at intervals in the Y-axis direction.

[0024] The first coil 22 is wound around one of a pair of adjacent portions of the magnetizing yoke 21 extending in the X-axis direction. The second coil 23 is wound around the other of the pair of adjacent portions of the magnetizing yoke 21 extending in the X-axis direction.

[0025] With this configuration, as shown in FIG. 1, one of a pair of adjacent portions of the magnetizing yoke 21 extending in the X-axis direction and the first coil 22 form a first magnetized portion 24, and the other of the pair of adjacent portions of the magnetizing yoke 21 extending in the X-axis direction and the second coil 23 form a second magnetized portion 25.

[0026] The second magnetizer 3 is used when carrying out the second magnetization step, as will be described later. As shown in Fig. 2, the second magnetizer 3 includes a first magnetizing yoke 31, a second magnetizing yoke 32, a first coil 33, and a second coil 34.

[0027] The first magnetizing yoke 31 is, for example, a comb-tooth shaped magnetic body that is open on the positive side of the X axis, as shown in Fig. 2. The second magnetizing yoke 32 is, for example, a comb-tooth shaped magnetic body that is symmetrical to the first magnetizing yoke 31 with respect to the Y axis as the axis of symmetry, and is open on the negative side of the X axis.

[0028] However, the shapes of the first magnetizing yoke 31 and the second magnetizing yoke 32 will be described in detail later, but they may have any shape that allows a magnetic path to be formed in the X-axis direction through each of the third magnetic bodies 63, when the third magnetic bodies 63 that can generate magnetic orientation in the X-axis direction are arranged at intervals in the Y-axis direction.

[0029] The first coil 33 is wound around either a portion of the first magnetizing yoke 31 extending in the X-axis direction or a portion of the second magnetizing yoke 32 extending in the X-axis direction that faces the portion of the first magnetizing yoke 31 extending in the X-axis direction in the X-axis direction.

[0030] The second coil 34 is wound around the other of the portion of the first magnetizing yoke 31 extending in the X-axis direction or the portion of the second magnetizing yoke 32 extending in the X-axis direction that faces in the X-axis direction the portion of the first magnetizing yoke 31 extending in the X-axis direction. In this case, the first coil 33 and the second coil 34 are arranged alternately in the Y-axis direction.

[0031] 2, one of the first magnetizing yoke 31 or the second magnetizing yoke 32 and the first coil 33 forms a third magnetized portion 35, and the other of the first magnetizing yoke 31 or the second magnetizing yoke 32 and the second coil 34 forms a fourth magnetized portion 36. The third magnetized portion 35 and the fourth magnetized portion 36 face each other in the X-axis direction.

[0032] In this case, in the Y-axis direction, the distance between the third magnetized portion 35 arranged in the region on the +X-axis side of the multiple magnetic bodies 6 in the second magnetizer 3 and the third magnetized portion 35 arranged in the region on the -X-axis side (in other words, the distance between adjacent third magnetized portions 35 and fourth magnetized portions 36) is wider than the distance between the first magnetized portion 24 and second magnetized portion 25 of the first magnetizer 2.

[0033] The power supply 4 discharges the electric charge stored in a capacitor provided in the power supply 4 to the first coil 22 of the first magnetizing portion 24 and the second coil 23 of the second magnetizing portion 25 of the first magnetizer 2, and to the first coil 33 of the third magnetizing portion 35 and the second coil 34 of the fourth magnetizing portion 36 of the second magnetizer 3. As a result, the first magnetizing portion 24 and the second magnetizing portion 25 generate magnetic fields of opposite polarities. In addition, the third magnetizing portion 35 and the fourth magnetizing portion 36 generate magnetic fields of opposite polarities.

[0034] The control device 5 controls, for example, the power supply 4. In detail, the control device 5 switches between discharging the electric charge stored in the capacitor of the power supply 4 to the first coil 22 of the first magnetizing unit 24 and the second coil 23 of the second magnetizing unit 25 in the first magnetizer 2, and discharging to the first coil 33 of the third magnetizing unit 35 and the second coil 34 of the fourth magnetizing unit 36 ​​in the second magnetizer 3.

[0035] Next, the flow of the magnetization method of this embodiment will be described. First, for example, as shown in Fig. 1, as the magnetic bodies 6 to be magnetized, a first magnetic body 61 capable of generating magnetic orientation in a direction tilted with respect to the X-axis direction (for example, a direction tilted at approximately 45° with respect to the X-axis), a second magnetic body 62 capable of generating magnetic orientation in the Y-axis direction, and a third magnetic body 63 capable of generating magnetic orientation in the X-axis direction are arranged (arranged) in the Y-axis direction.

[0036] Here, in Figures 1 and 2, the first magnetic body 61, the second magnetic body 62, and the third magnetic body 63 are approximately rectangular when viewed from the Z-axis direction, but the shapes of the first magnetic body 61, the second magnetic body 62, and the third magnetic body 63 can be changed as appropriate.

[0037] More specifically, the first magnetic bodies 61 are arranged at intervals in the Y-axis direction. In this case, for example, a magnetic body capable of generating magnetic orientation in a direction tilted clockwise with respect to the X-axis direction as viewed from the +Z-axis side is arranged as the first magnetic body 61 on the +Y-axis side, and a magnetic body capable of generating magnetic orientation in a direction tilted counterclockwise with respect to the X-axis direction as viewed from the +Z-axis side is arranged as the first magnetic body 61 on the -Y-axis side.

[0038] The second magnetic bodies 62 are disposed between the first magnetic bodies 61 in the Y-axis direction. The third magnetic bodies 63 are disposed outward of the pair of first magnetic bodies 61 in the Y-axis direction. In other words, the third magnetic bodies 63 are disposed on both the positive and negative Y-axis sides of the pair of magnetic bodies 61.

[0039] By arranging the first magnetic body 61, the second magnetic body 62, and the third magnetic body 63 arranged in this way in the Y-axis direction, for example, so that they are repeated in the Y-axis direction, multiple magnetic bodies 6 can be arranged.

[0040] Next, a first magnetization step is performed on the first magnetic body 61 and the second magnetic body 62 using the first magnetizer 2 of the magnetization device 1. In detail, as shown in Fig. 1 , in the region on the negative X-axis side of the magnetic body 6, the first magnetizer 2, the first magnetic body 61 on the positive Y-axis side, the second magnetic body 62, and the first magnetic body 61 on the negative Y-axis side form a magnetic path, i.e., a magnetic flux loop, the first magnetizing portion 24 of the first magnetizer 2 is disposed near the first magnetic body 61 on the positive Y-axis side, and the second magnetizing portion 25 of the first magnetizer 2 is disposed near the first magnetic body 61 on the negative Y-axis side.

[0041] At this time, although the detailed operation will be described later, it is preferable that the first magnetizing portion 24 of the first magnetizer 2 is arranged so as to protrude toward the Y-axis + side from the first magnetic body 61 on the Y-axis + side when viewed from the X-axis direction.

[0042] Furthermore, the second magnetizing portion 25 of the first magnetizer 2 is preferably arranged so as to protrude toward the negative Y-axis side from the first magnetic body 61 on the negative Y-axis side when viewed from the X-axis direction. For example, the first magnetizing portion 24 and the second magnetizing portion 25 of the first magnetizer 2 may be arranged so as to straddle the first magnetic body 61 and the third magnetic body 63 when viewed from the X-axis direction.

[0043] Then, the control device 5 controls the power supply 4 to discharge the electric charge to the first coil 22 and the second coil 23 of the first magnetizer 2. As a result, for example, as shown by the arrows in Fig. 1, a magnetic path is formed, and the first magnetic body 61 and the second magnetic body 62 on the +Y-axis side and the first magnetic body 61 on the -Y-axis side are magnetized.

[0044] In this case, the first magnetic body 61 on the + side of the Y axis has the property of being able to generate a magnetic orientation in a direction tilted clockwise with respect to the X axis direction when viewed from the + side of the Z axis, and therefore becomes a magnet that generates a magnetic orientation toward the - side of the Y axis as it moves toward the + side of the X axis.

[0045] The second magnetic body 62 has a property that can generate magnetic orientation in the Y-axis direction, so it becomes a magnet that generates magnetic orientation on the negative Y-axis side, for example. Furthermore, the first magnetic body 61 on the negative Y-axis side has a property that can generate magnetic orientation in a direction tilted counterclockwise with respect to the X-axis direction when viewed from the positive Z-axis side, so it becomes a magnet that generates magnetic orientation toward the negative Y-axis side as it moves toward the negative X-axis side, for example.

[0046] Here, when the first magnetizing portion 24 of the first magnetizer 2 is arranged so as to protrude from the first magnetic body 61 on the + side of the Y axis toward the + side of the Y axis, and the second magnetizing portion 25 of the first magnetizer 2 is arranged so as to protrude from the first magnetic body 61 on the - side of the Y axis toward the - side of the Y axis, a larger magnetic flux loop can be formed than when the first magnetizing portion 24 of the first magnetizer 2 is arranged so as to face the first magnetic body 61 on the + side of the Y axis, and the second magnetizing portion 25 of the first magnetizer 2 is arranged so as to face the first magnetic body 61 on the - side of the Y axis.

[0047] Therefore, it is possible to effectively magnetize the portion of the first magnetic body 61 on the +Y-axis side that is on the +Y-axis side and the +X-axis side, and the portion of the first magnetic body 61 on the -Y-axis side that is on the -Y-axis side and the +X-axis side, which are difficult for the magnetic flux loop to reach.

[0048] Next, a second magnetization step is performed on the third magnetic body 63 using the second magnetizer 3 of the magnetization device 1. In detail, for example, the third magnetizing portion 35 of the second magnetizer 3 is arranged in an area on the negative X-axis side with respect to the magnetic body 63 on the positive Y-axis side, and the fourth magnetizing portion 36 of the second magnetizer 3 is arranged in an area on the positive X-axis side with respect to the third magnetic body 63 on the positive Y-axis side, so that a magnetic path to the positive X-axis side is formed via the third magnetic body 63 on the positive Y-axis side.The third magnetizing portion 35 and the fourth magnetizing portion 36 are opposed to each other across the third magnetic body 63 on the positive Y-axis side.

[0049] Furthermore, for example, the third magnetizing portion 35 of the second magnetizer 3 is arranged in an area on the +X-axis side relative to the magnetic body 63 on the -Y-axis side so that a magnetic path to the -X-axis side is formed via the third magnetic body 63 on the -Y-axis side, and the fourth magnetizing portion 36 of the second magnetizer 3 is arranged in an area on the -X-axis side relative to the third magnetic body 63 on the -Y-axis side, with the third magnetizing portion 35 and the fourth magnetizing portion 36 facing each other across the third magnetic body 63 on the -Y-axis side.

[0050] Then, the control device 5 controls the power supply 4 to discharge the electric charge to the first coil 33 and the second coil 34 of the second magnetizer 3. As a result, for example, as shown by the arrows in Fig. 2, a magnetic path is formed, and the third magnetic body 63 on the +Y-axis side and the third magnetic body 63 on the -Y-axis side are magnetized.

[0051] In this case, the third magnetic body 63 on the +Y-axis side has a property that can generate magnetic orientation in the X-axis direction, and therefore becomes, for example, a magnet that generates magnetic orientation on the +X-axis side. Also, the third magnetic body 63 on the -Y-axis side has a property that can generate magnetic orientation in the X-axis direction, and therefore becomes, for example, a magnet that generates magnetic orientation on the -X-axis side. This allows the multiple magnetic bodies 6 (first magnetic body 61, second magnetic body 62, and third magnetic body 63) to be formed as a Halbach array magnet.

[0052] As described above, the magnetizing method and magnetizing device 1 of the present embodiment arrange the first magnetizing portion 24 and the second magnetizing portion 25 of the first magnetizer 2 at an interval in the Y-axis direction in the region on the negative side of the X-axis with respect to the multiple magnetic bodies 6, and form a magnetic path between the first magnetizing portion 24 and the second magnetizing portion 25 via the first magnetic body 61 that can generate magnetic orientation in a direction tilted with respect to the X-axis direction, thereby magnetizing the first magnetic body 61 and the second magnetic body 62 between the first magnetizing portion 24 and the second magnetizing portion 25. Therefore, the first magnetic body 61 can be magnetized so as to generate good magnetic orientation in a direction tilted with respect to the X-axis direction.

[0053] Furthermore, when the first magnetizing portion 24 of the first magnetizer 2 is arranged so as to protrude from the first magnetic body 61 on the +Y-axis side toward the +Y-axis side, and the second magnetizing portion 25 of the first magnetizer 2 is arranged so as to protrude from the first magnetic body 61 on the -Y-axis side toward the -Y-axis side, a larger magnetic flux loop can be formed than when the first magnetizing portion 24 of the first magnetizer 2 is arranged to face the first magnetic body 61 on the +Y-axis side and the second magnetizing portion 25 of the first magnetizer 2 is arranged to face the first magnetic body 61 on the -Y-axis side. Therefore, it is possible to effectively magnetize the part of the first magnetic body 61 on the +Y-axis side that is on the +Y-axis side and the +X-axis side that is on the -Y-axis side and the +X-axis side that is on the -Y-axis side of the first magnetic body 61 on the -Y-axis side, which are difficult for the magnetic flux loop to reach.

[0054] In addition, in the present embodiment, since the second magnetizer 3 is equipped with the fourth magnetizing portion 36, a larger magnetic path can be formed with a smaller charge than in the case where the fourth magnetizing portion 36 is omitted, and the third magnetic body 63 can be efficiently magnetized. However, the fourth magnetizing portion 36 of the second magnetizer 3 may be omitted.

[0055] <Embodiment 2> 3 is a diagram showing a state in which the first magnetization step is performed on a magnetic body using the magnetizing device of the present embodiment. The magnetizing device 101 and the magnetizing method of the present embodiment have substantially the same configurations as the magnetizing device 1 and the magnetizing method of the first embodiment, and therefore, duplicated descriptions will be omitted and the same components will be described using the same reference numerals.

[0056] 3, the magnetizing device 101 of the present embodiment includes, in addition to the components of the magnetizing device 1 of the first embodiment, a magnetic body 102 that is arranged in an area on the positive side of the X axis with respect to the multiple magnetic bodies 6 during the first magnetizing process. The magnetic body 102 is arranged so as to substantially face the first magnetic body 61 during the first magnetizing process, for example.

[0057] In this case, as shown in Figure 3, the magnetic body 102 should be arranged so that it covers the first magnetic body 61, the second magnetic body 62 on the +Y-axis side and the first magnetic body 61 on the -Y-axis side in the region on the +X-axis side of the multiple magnetic bodies 6 when viewed from the X-axis direction.

[0058] That is, it is preferable to arrange the magnetic body 102 so that the entire area from the end on the +Y-axis side to the end on the -Y-axis side of the multiple magnetic bodies 6 that form a magnetic path with the first magnetizing portion 24 and the second magnetizing portion 25 is covered by the magnetic body 102 from the other area relative to the area where the first magnetizer 2 is arranged in the area sandwiching the multiple magnetic bodies 6. This makes it possible to form a larger magnetic flux loop than when the magnetic body 102 is omitted.

[0059] Therefore, it is possible to effectively magnetize the portion of the first magnetic body 61 on the +Y-axis side that is on the +Y-axis side and the +X-axis side, and the portion of the first magnetic body 61 on the -Y-axis side that is on the -Y-axis side and the +X-axis side, which are difficult for the magnetic flux loop to reach.

[0060] The present disclosure is not limited to the above-described embodiments, and can be modified as appropriate within the scope of the present disclosure.

[0061] For example, in the above embodiment, a first magnetic body 61, a second magnetic body 62, and a first magnetic body 61 on the Y-axis negative side are arranged to form a so-called auxiliary magnet of the Halbach array magnet, but the number of magnetic bodies 6 can be changed as appropriate. Also, the magnetic orientation in the above embodiment is an example and can be changed as appropriate. Also, the magnet arrangement is not limited to a linear arrangement, and may be applied to an annular arrangement such as an inner rotor or an outer rotor.

[0062] For example, in the above embodiment, the magnetic body 6 is arranged in the Y-axis direction, i.e., in a uniaxial direction, but the arrangement direction of the magnetic body 6 is not limited to a uniaxial direction, and the magnetic body 6 may be arranged in the circumferential direction of a circle centered at a predetermined position.

[0063] For example, the first magnetizing portion and the second magnetizing portion of the first magnetizer 2 may be used as the third magnetizing portion and the fourth magnetizing portion that are arranged in one of the regions that sandwich the plurality of magnetic bodies 6 in the second magnetizer 3. In other words, the first magnetizing portion and the second magnetizing portion of the first magnetizer 2 may be common to the third magnetizing portion and the fourth magnetizing portion that are arranged in one of the regions that sandwich the plurality of magnetic bodies 6 in the second magnetizer 3. In this case, it is preferable that the magnetizing yoke 21 of the first magnetizer 2 is configured to be extendable and contractible in the Y-axis direction.

[0064] For example, in the above embodiment, the first magnetizer 2 and the second magnetizer 3 use the same power supply 4 and control device 5, but individual power supplies and control devices may be used. [Explanation of symbols]

[0065] 1 Magnetizer 2. First magnetizer 21 Magnetizing yoke 22 First coil 23 Second Coil 24 First magnetizing part 25 Second magnetizing section 3. Second magnetizer 31 First magnetizing yoke 32 Second magnetizing yoke 33 First Coil 34 Second Coil 35 Third magnetization section 36 Fourth magnetization section 4 Power supply 5. Control device 6 Magnetic material 61 First Magnetic Material 62 Second Magnetic Material 63 The Third Magnetic Material 101 Magnetizer 102 Magnetic substances

Claims

1. A method for magnetizing a plurality of magnetic bodies arranged in a first direction to form a Halbach array magnet, comprising the steps of: Arranging the plurality of magnetic bodies so as to include at least one magnetic body among the plurality of magnetic bodies that can generate a magnetic orientation in a direction inclined with respect to a second direction perpendicular to the first direction; a first magnetizing step of arranging a first magnetized portion and a second magnetized portion at an interval in the first direction in one region of the region sandwiching the plurality of magnetic bodies in the second direction, and forming a magnetic path between the first magnetized portion and the second magnetized portion via a magnetic body that can generate a magnetic orientation in a direction inclined with respect to the second direction, thereby magnetizing the magnetic body between the first magnetized portion and the second magnetized portion; a second magnetization step of arranging a third magnetized portion in one of the regions sandwiching the plurality of magnetic bodies, and forming a magnetic path through the magnetic bodies capable of generating a magnetic orientation in the second direction among the plurality of magnetic bodies, thereby magnetizing the magnetic bodies capable of generating a magnetic orientation in the second direction; Equipped with A magnetizing method comprising: arranging a magnetic body in a region sandwiching the multiple magnetic bodies, the other of a region in which the first magnetized portion and the second magnetized portion are arranged, so as to face a magnetic body that can generate a magnetic orientation in a direction tilted with respect to the second direction in the second direction.

2. 2. The magnetizing method according to claim 1, wherein, when viewed from the second direction, one of the first magnetized portion or the second magnetized portion is arranged so as to protrude from a magnetic body capable of generating magnetic orientation in a direction inclined with respect to the second direction to an opposite side to the other side of the first magnetized portion or the second magnetized portion.

3. 3. The magnetization method according to claim 1, wherein the magnetic bodies capable of generating a magnetic orientation in a direction inclined with respect to the second direction are arranged at intervals in the first direction.

4. 4. The magnetizing method according to claim 1, further comprising arranging a fourth magnetized portion in a region sandwiching the plurality of magnetic bodies, the fourth magnetized portion being disposed in a region opposite to the region in which the third magnetized portion is disposed, so as to face the third magnetized portion in the second direction.

5. 5. The magnetizing method according to claim 1, further comprising forming a magnetic flux loop between the first magnetized portion and the second magnetized portion via a magnetic body capable of generating a magnetic orientation in a direction inclined with respect to the second direction.

6. The third magnetized portions are arranged at intervals in the first direction, 6. The magnetizing method according to claim 1, wherein a distance between the third magnetized portion in the first direction is larger than a distance between the first magnetized portion and the second magnetized portion in the first direction.

7. The magnetizing method according to claim 1 , wherein the first direction is a preset axial direction or a preset circumferential direction.

8. An apparatus for magnetizing a plurality of magnetic bodies arranged in a first direction to form a Halbach array magnet, comprising: a first magnetized portion and a second magnetized portion that are arranged at an interval in the first direction in one of regions that sandwich the plurality of magnetic bodies in the second direction so as to form a magnetic path via the magnetic body that can generate magnetic orientation in a direction inclined with respect to a second direction perpendicular to the first direction, in a state in which the plurality of magnetic bodies are arranged to include at least one magnetic body that can generate magnetic orientation in a direction inclined with respect to the second direction; a third magnetized portion disposed in one of regions sandwiching the plurality of magnetic bodies so as to form a magnetic path through the magnetic body that can generate magnetic orientation in the second direction among the plurality of magnetic bodies; and a magnetic body that is arranged in a region that is opposite to a region in which the first magnetized portion and the second magnetized portion are arranged in a region that sandwiches the plurality of magnetic bodies, so as to face a magnetic body that can generate a magnetic orientation in a direction inclined with respect to the second direction in the second direction; A magnetizing device comprising:

9. 9. The magnetizing device according to claim 8, further comprising a fourth magnetized portion arranged in a region that is the other of a region in which the plurality of magnetic bodies are sandwiched between the third magnetized portion and the fourth magnetized portion, so as to face the third magnetized portion in the second direction.

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