JP2005137050A - Apparatus and method for magnetizing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve workability in the case of magnetizing and to realize use of a transfer auxiliary implement such as a hanging implement. <P>SOLUTION: The apparatus for magnetizing includes a rising and falling unit 20 for rising or falling a magnetizing yoke 26 for magnetizing a member W to be magnetized to a base 11 by supporting the magnetizing yoke 26, and a carrying-in/carrying-out unit 40 reciprocating a receiving jig 50 for placing the member to be magnetized on the base between a magnetizing position B directly under the magnetizing yoke 26 and a carrying-in position A separate from the magnetizing position B in a horizontal direction, and further a pushing holding unit 30 for positioning fixedly the member to be magnetized moved to the magnetizing position at the receiving jig. The method for magnetizing includes a step of placing the member to be magnetized on the receiving jig disposed at the conveying position separate from the magnetizing yoke in the horizontal direction, a step of moving the member to be magnetized and the receiving jig to the magnetizing position, and a step of lowering the magnetizing yoke to the position corresponding to the member to be magnetized and magnetizing the member to be magnetized. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a magnetizing apparatus and a magnetizing method for magnetizing a magnetized member such as a rotor of a motor.

As this type of magnetizing device, for example, as shown in Patent Document 1, a cylindrical magnetizing yoke is fixed on the base of the device, and the rotor is inserted coaxially from above the magnetizing yoke. There is something that was magnetized. In this type of magnetizing apparatus, the rotor needs to be supported at both ends so that the outer peripheral surface thereof does not come into contact with the inner peripheral surface of the magnetizing yoke. The lower end and the upper end of the cylinder are respectively supported by the upper end of the columnar member attached to the lower part of the support member to be moved up and down and the lower end of the cylindrical member attached to the slider provided so as to be movable up and down, and the support member is lowered Thus, the rotor is coaxially inserted from above the magnetizing yoke.
JP-A-9-294355 (paragraphs [0009] to [0012], FIG. 1).

  In the prior art disclosed in Patent Document 1, the operator supports the lower end of the rotor rotation shaft on a cylindrical member protruding above the center of the magnetizing yoke fixed on the base so as not to fall down. In this state, it is necessary to lower the slider and support the upper end of the rotating shaft of the rotor by the upper cylindrical member. Therefore, there is a problem that workability is poor because several operations must be performed with the hand extended to the vicinity of the center of the magnetizing yoke. In addition, this type of magnetizing device used in the production line is often installed on a workbench to improve maintainability, but this workbench does not take an unreasonable posture such as the operator bending over. Since it is a height that can handle the member placed on it, the columnar member on which the rotor is installed becomes the height near the shoulder from the operator's chest as described above, and a large force is required to lift the rotor to that level. There is a problem that requires. Furthermore, in the case of a large and heavy rotor, it is necessary to support the rotor with a transfer assisting tool such as a lifting tool and attach it to the magnetizing device. Since there is a support member such as a cylindrical member or a slider directly above the position, a simple lifting tool cannot be used, and therefore there is a problem that it is not suitable for magnetizing a large and heavy rotor. The object of the present invention is to solve each of these problems.

  For this purpose, a magnetizing apparatus according to claim 1 of the present invention is provided with an elevating part for supporting a magnetizing yoke magnetized on a magnetized member and moving it up and down with respect to the base, and being attached to the base. A receiving jig for placing the magnetic member is provided.

  In the magnetizing apparatus according to the previous item, as shown in claim 2, the receiving jig is separated from the magnetizing position on the base immediately below the magnetizing yoke and the magnetizing position in the horizontal direction when viewed from directly above. It is preferable that a loading / unloading section that reciprocates between the loading position and the loading position is provided.

  The magnetizing device according to the preceding item (2) includes, as shown in (3), a pressing holding portion for positioning and fixing the magnetized member placed on the receiving jig and moved to the magnetizing position. Furthermore, it is preferable to provide it.

  In the magnetizing device described in the previous item 3, as shown in claim 4, the magnetized member is a rotor of a motor, and the magnetizing yoke has a hole that can accommodate the rotor with a gap. Is preferred.

  In the magnetizing method according to claim 5 of the present invention, a magnetizing yoke for magnetizing the magnetized member is provided to be movable up and down with respect to the base, and the magnetized member is placed on a receiving jig provided on the base. The magnetizing yoke is lowered toward the magnetized member to magnetize the magnetized member.

  In the magnetizing method described in the previous item, as shown in claim 6, a magnetized member is placed on a receiving jig at a carry-in position separated from the magnetized position in the horizontal direction when viewed from directly above, and magnetized. After moving the receiving jig and the magnetized member placed thereon with the magnetic yoke raised, the magnetized yoke corresponds to the magnetized member after moving to the magnetized position directly below the magnetized yoke. The magnetized member is preferably magnetized by the magnetized yoke after being lowered to the position.

  Prior to lowering the magnetizing yoke to a position corresponding to the magnetized member, the magnetizing method described in the previous item 2 is placed on the receiving jig and moved to the magnetized position. It is preferable that the moved magnetized member is positioned and fixed to the receiving jig by a pressing holding portion that descends.

  In the magnetizing method described in the preceding item 3, as shown in claim 8, the magnetized member is a rotor of a motor, and the magnetizing yoke has a hole that can accommodate the rotor with a gap. Is preferred.

  The invention according to claim 9 is magnetized by the magnetizing device according to any one of claims 1 to 4 or the magnetizing method according to any one of claims 5 to 8. This is a magnetized member to be magnetized.

  2. A lifting / lowering part for supporting a magnetizing yoke magnetized on the magnetized member and moving it up / down relative to the base, and a receiving jig provided on the base for mounting the magnetized member. According to the invention of the magnetizing device, even when the base of the magnetizing device is installed on the work table for improving workability, the receiving jig on which the magnetized member is placed has a force applied by the operator. Since the height of the waist is easy to put, the magnetized member can be easily handled.

  A loading / unloading section for reciprocating a receiving jig between a magnetization position directly below the magnetizing yoke on the base and a loading position horizontally separated from the magnetization position when viewed from directly above; According to the second aspect of the present invention, since the loading position can be set to a position suitable for work close to the operator's hand, the work of placing the magnetized member on the jig becomes easy. The magnetized member does not need to be supported by hand after it is placed on the receiving jig. Therefore, workability at the time of magnetization is greatly improved. Further, in this magnetizing apparatus, the carry-in position can be set to a position where the upper side that is horizontally separated from the elevating part is released, so that when the magnetized member is placed on the jig, the lifting tool Therefore, it can be easily applied to the magnetization of a magnetized member having a large size and a large weight.

  According to the invention of claim 3, further comprising a press holding portion for positioning and fixing the magnetized member placed on the receiving jig and moved to the magnetizing position to the jig, the press holding portion is lowered. Since the magnetized member moved to the magnetized position can be positioned and fixed to the receiving jig and then magnetized by lowering the magnetized yoke, the magnetized member and magnetized yoke at the magnetized position can be obtained. The positional relationship between is always kept accurate. Therefore, the gap between the magnetized member and the magnetized yoke can be reduced without the possibility of contact, and the efficiency of magnetizing can be improved thereby.

  According to the invention of claim 4, the magnetized member is a rotor of a motor, and the magnetized yoke has a hole that can accommodate the rotor with a gap. Thus, the rotor can be magnetized, and can also be applied to magnetizing a large and heavy rotor.

  A magnetizing yoke that magnetizes the magnetized member is provided so as to be movable up and down with respect to the base, and the magnetized member is placed on a receiving jig provided on the base, and the magnetized yoke is attached to the magnetized member. According to the magnetizing method of the fifth aspect of the present invention, the base is installed on the work table in order to improve the workability as in the first aspect of the invention. Even in this case, the receiving jig on which the magnetized member is placed has a waist height that is easy for an operator to apply force, so that the magnetized member can be easily handled.

  A magnetized member is placed on a receiving jig at a carry-in position horizontally apart from the magnetizing position when viewed from directly above, and the magnetizing yoke is raised and placed on the receiving jig and this. After moving the magnetized member to a magnetized position directly below the magnetized yoke, the magnetized yoke is lowered to a position corresponding to the magnetized member and magnetized on the magnetized member by the magnetized yoke. According to the invention of claim 6, as in the case of the invention of claim 2, the carry-in position can be set to a position suitable for work close to the operator's hand. The work of placing on the top becomes easy, and the magnetized member does not need to be supported by hand after it is placed on the receiving jig. Therefore, workability at the time of magnetization is greatly improved. Further, in this magnetizing method, the carry-in position can be set to a position where the upper side that is horizontally separated from the lifting / lowering part is released, so that when the magnetized member is placed on the jig, Therefore, it can be easily applied to the magnetization of a magnetized member having a large size and a large weight.

  Prior to lowering the magnetized yoke to the position corresponding to the magnetized member, the magnetized member placed on the receiving jig and moved to the magnetized position is positioned on the receiving jig by the press holding part that descends. According to the seventh aspect of the invention to be fixed, as in the case of the third aspect of the invention, after the pressed holding portion is lowered and the magnetized member moved to the magnetized position is positioned and fixed to the jig, Since magnetization can be performed by lowering the magnetized yoke, the positional relationship between the magnetized member and the magnetized yoke at the magnetized position is always maintained accurately. Therefore, it is possible to reduce the gap between the magnetized member W and the magnetized yoke without contacting them, thereby improving the magnetizing efficiency.

  According to the invention of claim 8, the magnetized member is a rotor of a motor and the magnetizing yoke has a hole that can accommodate the rotor with a gap, as in the case of the invention of claim 4. The rotor can be magnetized with workability, and can also be applied to magnetizing a large and heavy rotor.

  According to the magnetized member invention described in claim 9, the magnetized member can use a transfer assisting tool such as a hanging tool when it is placed on the receiving jig, and after that, Therefore, the magnetized member may be large and heavy.

  First, the best mode of the magnetizing apparatus according to the present invention will be described with reference to FIGS. The magnetizing apparatus according to this embodiment includes a fixed machine frame 10 that supports the whole, a lifting unit 20 that moves the magnetizing yoke 26 up and down, and a rotor of the motor that has been moved to a magnetizing position B that is directly below the magnetizing yoke 26. (Magnetized member) The holding member 30 for positioning and fixing W on the jig 50, and the receiving jig 50 for placing the rotor W between the magnetized position B and the carry-in position A separated from the horizontal position thereof. It consists of the carrying in / out part 40 reciprocated between.

  As shown in FIG. 1 to FIG. 3, the fixing machine frame 10 includes four support columns that are erected and fixed via a bracket 13 on a thick base 11 that is installed on a work table (not shown). 12 and an upper plate 14 fixedly supported on the upper end of each support column 12, and a support plate 16 is fixed to the upper side of the upper plate 14 via four upper columns 17. The upper plate 14 and the support plate 16 are parallel to the base 11, and an upper guide cylinder 15 is fixed to the central portion of the upper plate 14 to guide and support an intermediate rod 34 of a press holding unit 30 to be described later. Yes.

  As shown in FIGS. 1 and 2, the movable plate 21 of the elevating unit 20 is guided and supported on the support column 12 of the fixed machine frame 10 through a guide cylinder 22 fixed at the four corners thereof. The first cylinder 23 erected on the upper surface of the rear portion of the upper plate 14 of the fixed machine frame 10 has a piston rod 23 a extending downward through the upper plate 14, and the lower end thereof is fixed to the upper surface of the movable plate 21. The movable plate 21 is moved up and down by being connected to the bracket 24 via a joint 24a. At the center of the movable plate 21, a guide cylinder 25 that guides and supports an elevating cylinder 31 of a press holding unit 30 described later so as to move up and down is fixed coaxially with the upper guide cylinder 15.

  A magnetizing yoke 26 and thick plate members 27a and 27b provided on the upper and lower sides thereof are fixed on the lower side of the central portion of the movable plate 21 of the elevating unit 20, and are fixed on the lower surface of the lower thick plate member 27b. The plate member 28 is fixed. The magnetized yoke 26 and the thick plate members 27a and 27b are substantially the same rectangular shape in plan view, and the plate member 28 is a larger rectangle. The magnetized yoke 26, the thick plate members 27a and 27b, and the plate member 28 is formed with a hole 29 coaxially with the guide cylinder 25 and slightly larger than the outer diameter of the rotor W. The magnetizing yoke 26 is formed by laminating a large number of iron plates and is divided into an even number of magnetic poles along the circumferential direction of the inner periphery of the hole 29, and a magnetizing coil is wound around each magnetic pole. Each of the thick plate members 27a and 27b is made of a nonmagnetic material.

  As shown in FIGS. 1, 2, and 4, the pressing holding unit 30 includes an elevating cylinder 31 and an intermediate rod 34 that are coaxially fixed to each other, and the elevating cylinder 31 is provided by a guide cylinder 25 of the elevating unit 20. The intermediate rods 34 are slidably guided and supported by the upper guide cylinder 15 of the fixed machine frame 10. The second cylinder 35 erected coaxially with the intermediate rod 34 on the upper surface of the support plate 16 of the fixed machine frame 10 has a piston rod 35 a extending downward through the support plate 16, and a lower end thereof has a joint 36. The lift cylinder 31 and the intermediate rod 34 are moved up and down. A pressing member 32 whose outer peripheral portion protrudes downward is fixed to the lower end of the lifting cylinder 31.

  As shown mainly in FIG. 4, a stepped inner hole 31 a having a large diameter at the upper part is formed in the elevating cylinder 31 so as to be coaxially penetrated, and a center rod 33 is slidable in the inner hole 31 a. The head 37a of the center rod 33 is urged downward by a spring 37 provided between the large diameter portion of the inner hole 31a and the protruding portion 34a of the intermediate rod 34 protruding into the inner hole 31a. In a state where no is added, as shown in FIG. 4 (a), it is in contact with the step portion of the inner hole 31a. A frustoconical center presser 33 b is fixed to the lower end of the center rod 33 with screws. In the position shown in FIG. 4 (a), the center presser 33b of the center rod 33 slightly protrudes downward from the presser member 32. However, if an upward force is applied to the center presser 33b, the center rod 33 pushes the spring 37. The center presser 33 b is bent and moved upward so that the center presser 33 b enters into the concave portion below the presser member 32.

  As shown in FIGS. 1 to 3, the loading / unloading unit 40 can reciprocate in the X direction between the loading position A and the magnetizing position B with the moving table 41 to which the receiving jig 50 is attached. The main components are a pair of linear guides 42 that are guided and supported, and a cylindrical linear motor 44 that reciprocates the movable table 41 between the positions A and B. The linear guide 42 is fixed to the four corners on the lower side of the movable table 41 made of a rectangular plate material, and is fixed on the base 11 via the table 43 in parallel with each other, and can slide on the guide block 42a. And a pair of guide rails 42b engaged with each other. The cylindrical linear motor 44 has a primary coil 44a fixed to the lower center portion of the movable table 41, and extends in parallel with each guide rail 42b through the primary coil 44a with a slight gap therebetween. Is attached to the base 11 via the support plate 45, and consists of a secondary rod 44b in which a large number of magnetic poles are alternately formed along the longitudinal direction. The magnetizing position B is a position on the base 11 that is directly below the magnetizing yoke 26, and the carry-in position A is a position close to one side of the base 11 that is separated from the magnetizing position B in the horizontal direction.

  In FIG. 3, a block 46 is fixed to the lower surface of one side of the moving table 41 on the lower side, and stoppers 47 a and 47 b are provided on both the left and right sides of the base 11 on the moving line of the block 46. If the moving table 41 moves rightward in the X direction and the block 46 comes into contact with the right stopper 47a, the moving table 41 stops at the loading position A, moves leftward in the X direction, and the block 46 moves to the left stopper 47b. If the contact is made, the movable table 41 is stopped at the magnetized position B. Each stop position is adjusted by adjusting the position of the contact portion at the tip of each stopper 47a, 47b with a screw. In addition, an operating piece 48 is fixed to one end surface of the moving table 41 on the upper side in FIG. 3, and micro switches 49 a and 49 b are provided on the right and left sides on the base 11 on the moving line of the operating piece 48, respectively. ing. Whether the moving table 41 is stopped at the carry-in position A or the magnetized position B is detected by operating one of the micro switches 49a and 49b. .

  A receiving jig 50 on which the rotor W is placed is fixed on the upper surface of the central portion of the movable table 41. The receiving jig 50 includes a support block 51 positioned and fixed at the center of the upper surface of the movable table 41 and a ring member 52 fixed on the upper side thereof. A frustoconical protrusion 51 a that engages with the tapered hole at the lower end of the shaft Wa and aligns the rotor W placed on the receiving jig 50 is provided. Further, the ring member 52 is provided with a phasing pin 53 for phasing the rotor W to be placed.

  Positioning pins 41a are erected on the upper surfaces of the four corners of the moving base 41, and the lower surfaces of the plate members 28 of the elevating unit 20 are engaged with the pins 41a at positions corresponding to the pins 41a. A bush 28a having a central hole is provided. The center hole of the bush 28a and the pin 41a are engaged with each other between the receiving jig 50 on the moving table 41 moved to the magnetizing position B and the magnetizing yoke 26 of the elevating unit 20 lowered toward the receiving jig 50. By doing this, they are aligned.

  Next, a magnetizing method according to this embodiment will be described with reference to FIGS. First, as shown by the solid lines in FIGS. 1 to 3, the elevating unit 20 and the press holding unit 30 are raised, and the moving table 41 to which the receiving jig 50 is fixed by the linear motor 44 is close to one side of the base 11. The motor rotor W is placed on the jig 50 while being moved to the carry-in position A. At the time of this mounting, the centering and phase alignment of the rotor W with respect to the receiving jig 50 are performed by the protrusion 51a and the phase determination pin 53. The rotor W is stably supported by the ring member 52 without adding manpower. The receiving jig 50 and the moving table 41 on which the rotor W is placed are moved by the linear motor 44 toward the two-dot chain line in FIGS. 1 and 3 and the magnetized position B shown in FIG.

  When the block 46 of the moved moving table 41 comes into contact with the left stopper 47 b and the receiving jig 50 is stopped at the magnetization position B that is directly below the magnetizing yoke 26, the operating piece provided on the moving table 41. The microswitch 49b actuated by 48 detects it. If this detection is made, the second cylinder 35 is actuated, and the press holding portion 30 is lowered as shown in FIG. 4B to position and fix the rotor W to the jig 50. At the start of the positioning and fixing operation, the elevating cylinder 31 and the center rod 33 are lowered together. Then, the upper end of the rotary shaft Wa of the rotor W placed on the receiving jig 50 is aligned, and then only the lifting cylinder 31 is lowered, and the upper end of the rotary shaft Wa is held by the pressing member 32 at the tip. The outer peripheral portion is pressed toward the jig 50. The rotor W is positioned and fixed to the receiving jig 50 in this way. While only the lifting cylinder 31 is lowered, the center rod 33 urged downward by the spring 37 is retracted with respect to the lifting cylinder 31.

  After the rotor W is positioned and fixed to the receiving jig 50, the first cylinder 23 is operated, and the elevating part 20 including the magnetizing yoke 26, the thick plate members 27a and 27b and the plate member 28 is lowered, and the rotor W The magnetized yoke 26 enters the holes 29 formed in the thick plate members 27 a and 27 b and the plate member 28. Then, the lowermost plate member 28 approaches the moving table 41, the center hole of the bush 28a and the pin 41a are engaged with each other, and the magnetizing yoke 26 is aligned with the receiving jig 50, and FIG. When the lower surface of each bush 28a comes into contact with the upper surface of the movable table 41 as shown in FIG. In this state, the magnetizing yoke 26 is lowered to a position corresponding to the rotor W.

  In this state, the magnetizing coil of the magnetizing yoke 26 is energized to magnetize the rotor W. After the completion of magnetization, contrary to the above description, the elevating unit 20 including the magnetizing yoke 26 and the like is first raised, the press holding unit 30 is raised, and the positioning and fixing of the rotor W with respect to the receiving jig 50 is released. After that, the moving table 41, the receiving jig 50, and the rotor W are moved from the magnetized position B to the carry-in position A. When the magnetized rotor W is removed from the jig 50, the one-cycle magnetizing operation is completed.

  According to the magnetizing apparatus and the magnetizing method of the above-described embodiment, the magnetizing yoke 26 magnetized on the rotor W can be moved up and down with respect to the base 11 by the elevating unit 20 and is magnetized directly below the magnetizing yoke 26. A receiving jig 50 for placing the rotor W is provided on a moving table 41 that reciprocates between a position B and a loading position A that is close to one side of the base 11 that is horizontally separated from the position B. The rotor W is positioned at the loading position. After being placed on the rotor W on the receiving jig 50 in A, it is moved to the magnetizing position B by the carry-in / out part 40, and the magnetizing yoke 26 is lowered to a position corresponding to the rotor W by the elevating part 20. Magnetization of the rotor W is performed. The carry-in position A is a position close to one side of the base 11 and is close to the operator's hand, so that the placement of the rotor W on the receiving jig 50 is easy and the loading position A is placed on the receiving jig 50. After that, it is not necessary to support the rotor W by hand. Therefore, workability at the time of magnetization is very good. Further, in this embodiment, the carry-in position A can be set to a position where the upper side that is separated from the elevating unit 20 in the horizontal direction is released, and thereby the lifting tool is placed when the rotor W is placed on the jig 50. Therefore, it can be easily applied to the magnetizing of the large and heavy rotor W. Note that the carry-in position A is a position close to one side of the base 11 is merely an example, and the carry-in position A is arbitrary as long as it is suitable for the placement work. Further, the carry-in position A only needs to be separated from the magnetized position B in the horizontal direction when viewed from directly above, and the height may be different from the magnetized position B. When the heights are different as described above, the carry-in position A that supports the receiving jig 50 on which the rotor W is placed has only to be inclined and moved, and all the above-described functions and effects can be obtained. .

  Further, in the above-described embodiment, the press holding unit 30 that receives and positions and fixes the rotor W placed on the receiving jig 50 and moved to the magnetization position B is provided, and the magnetizing yoke 26 is connected to the rotor W. Prior to lowering to the corresponding position, the rotor W is positioned and fixed to the receiving jig 50 by the press holding portion 30. In this way, since the rotor W does not move due to the magnetic force during the raising / lowering of the magnetizing yoke 26 or in the middle of magnetizing, the positional relationship between the rotor W and the magnetizing yoke 26 is always accurately maintained. Be drunk. Accordingly, since the gap between the rotor W and the magnetized yoke 26 can be reduced without the risk of contact, the magnetizing efficiency is improved and the magnetic force of the rotor W is increased. The energization current to the magnetic coil can be reduced. However, the present invention is not limited to this, and if the rotor W is firmly fixed to the receiving jig 50, it can be implemented without using the press holding portion 30 as in the above-described embodiment. .

  In the above-described embodiment, the case where the present invention is applied to the magnetization of the rotor of the motor has been described. However, the present invention is not limited to this, and can be applied to the magnetization of various permanent magnet components. In this case, the magnetizing yoke 26 may be shaped according to the permanent magnet component to be applied.

  In the above-described embodiment, the linear motor 44 is used as a driving device for reciprocating the movable table 41. However, the present invention is not limited to this, and the movable table 41 is a feed screw mechanism using a ball screw or the like. You may make it drive by.

It is a sectional side view showing the whole structure of one embodiment of the magnetization device by the present invention. It is 2-2 sectional drawing of embodiment shown in FIG. It is a horizontal sectional view which shows the part below the raising / lowering part of embodiment shown in FIG. It is explanatory drawing of the magnetization method by this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Base, 20 ... Elevating part, 26 ... Magnetization yoke, 29 ... Hole, 30 ... Press holding part, 40 ... Carry-in / out part, 50 ... Receiving jig, W ... Magnetized member (rotor).

Claims (9)

An elevating part that supports a magnetizing yoke that magnetizes the magnetized member and that moves up and down relative to the base, and a receiving jig that is provided on the base and mounts the magnetized member. A magnetizing device. 2. The magnetizing apparatus according to claim 1, wherein the receiving jig is placed on the base immediately below the magnetizing yoke and a carry-in position separated from the magnetizing position in the horizontal direction when viewed from directly above. A magnetizing apparatus comprising a carry-in / out part that reciprocates between the magnet and the magnet. The magnetizing device according to claim 1 or 2, wherein a pressing holding portion for positioning and fixing the magnetized member placed on the receiving jig and moved to the magnetizing position to the receiving jig is provided. A magnetizing apparatus further comprising the magnetizing apparatus. 4. The magnetizing apparatus according to claim 1, wherein the magnetized member is a rotor of a motor, and the magnetized yoke has a hole portion that can accommodate the rotor with a gap. 5. A magnetizing apparatus comprising the magnetizing apparatus. A magnetizing yoke for magnetizing the magnetized member is provided to be movable up and down with respect to a base, and the magnetized member is placed on a receiving jig provided on the base, and the magnetized yoke is mounted on the magnetized yoke. A magnetizing method comprising lowering the magnetized member toward the magnetized member and magnetizing the magnetized member. 6. The magnetizing method according to claim 5, wherein said magnetized member is placed on said receiving jig at a carry-in position separated from said magnetized position in the horizontal direction when viewed from directly above, and said magnetized yoke After moving the receiving jig and the magnetized member placed on the receiving jig to a magnetized position directly below the magnetized yoke, the magnetized yoke is moved to the magnetized member. And magnetizing the magnetized member by the magnetized yoke. The magnetizing method according to claim 5 or 6, wherein the magnetizing yoke is placed on the receiving jig and moved to the magnetized position prior to lowering the magnetized yoke to a position corresponding to the magnetized member. A magnetizing method characterized in that the moved magnetized member is positioned and fixed to the receiving jig by a pressing holding portion that descends. The magnetizing method according to any one of claims 5 to 7, wherein the magnetized member is a rotor of a motor, and the magnetizing yoke has a hole that can accommodate the rotor with a gap. A magnetization method characterized by comprising: A magnetized member magnetized by the magnetizing device according to any one of claims 1 to 4 or the magnetizing method according to any one of claims 5 to 8.

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