WO2011125209A1 - Rotor et son procédé de fabrication - Google Patents

Rotor et son procédé de fabrication Download PDF

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Publication number
WO2011125209A1
WO2011125209A1 PCT/JP2010/056396 JP2010056396W WO2011125209A1 WO 2011125209 A1 WO2011125209 A1 WO 2011125209A1 JP 2010056396 W JP2010056396 W JP 2010056396W WO 2011125209 A1 WO2011125209 A1 WO 2011125209A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnet
slot
permanent magnet
outer layer
rotor
Prior art date
Application number
PCT/JP2010/056396
Other languages
English (en)
Japanese (ja)
Inventor
靖 西隈
靖治 竹綱
勝彦 建部
晋吾 雪吹
智裕 竹永
Original Assignee
トヨタ自動車株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by トヨタ自動車株式会社 filed Critical トヨタ自動車株式会社
Priority to PCT/JP2010/056396 priority Critical patent/WO2011125209A1/fr
Publication of WO2011125209A1 publication Critical patent/WO2011125209A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
    • H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect

Definitions

  • the present invention relates to a rotor that is one of the components of a motor, and relates to a rotor including a rotor core and field permanent magnets assembled to each of a plurality of slots formed in the rotor core, and a method of manufacturing the same.
  • a rotor having a permanent magnet for a field in which a permanent magnet is accommodated in a plurality of slots formed in a rotor core and fixed with an adhesive.
  • the permanent magnet fixing operation requires steps such as degreasing, cleaning, applying an adhesive, and curing the rotor core and permanent magnet, and the number of manufacturing steps is large.
  • the fixed position in the surface direction of the permanent magnet in the slot may vary, and the motor characteristics may be deteriorated.
  • the adhesive force of the adhesive is weakened, and there is a problem in quality that the position of the permanent magnet is shifted.
  • Patent Document 1 describes that a permanent magnet made of a bonded magnet is press-fitted into a slot of a rotor core and fixed while cutting the outermost periphery.
  • Patent Document 2 describes a rotor in which a permanent magnet whose outer periphery is wrapped with resin is fitted in a slot of a rotor core.
  • Patent Document 3 discloses a method in which a permanent magnet is coated with a coating material made of resin to form a coating layer, and a projection is formed on the outer surface of the coating layer. It is described that the permanent magnet is press-fitted into the slot while engaging the portion while cutting the portion.
  • the permanent magnet is composed of a bond magnet having a weak magnetic force. Therefore, it can be considered that the permanent magnet is composed of a rare earth sintered magnet having a strong magnetic force.
  • the permanent magnet may be cracked due to stress during press-fitting, and the magnet performance may be reduced.
  • the magnet performance may be further deteriorated. Accordingly, it is conceivable to reduce the press-fitting allowance of the permanent magnet so that it is difficult to break.
  • the accuracy of the slot shape and the outer dimensions of the permanent magnet must be increased, which increases the manufacturing effort.
  • the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a rotor capable of securely fixing a permanent magnet to a slot of a rotor core while ensuring magnet performance, and a method for manufacturing the same. There is to do.
  • a rotor including a rotor core, a plurality of slots formed in the rotor core, and a permanent magnet assembled to each of the plurality of slots.
  • the permanent magnet includes an outer layer magnet and an inner layer magnet provided inside the outer layer magnet, and the strength of the outer layer magnet is set to be smaller than the strength of the inner layer magnet. It is intended to be fixed in the slot by contacting the inner wall of the slot.
  • the outer layer magnet having low strength is brought into contact with the inner wall of the slot and the permanent magnet is press-fitted into the slot while shaving a part. At this time, the outer layer magnet having a low strength is scraped, so that the press-fit load of the permanent magnet becomes relatively small. Further, the strong inner layer magnet is accommodated in the slot without being cut. The permanent magnet is fixed in the slot by contacting the inner wall of the slot with the outer layer magnet cut away.
  • the width of the inner layer magnet is smaller than the width of the slot, and the entire width of the permanent magnet including the outer layer magnet is larger than the width of the slot. desirable.
  • the inner layer magnet is accommodated in the slot without contacting the inner wall of the slot because the width of the inner layer magnet is smaller than the width of the slot. Since the width of the permanent magnet including the outer layer magnet is larger than the width of the slot, the outer layer magnet is scraped by the larger width.
  • the inner wall of the slot contacting the outer layer magnet may be formed in a cross-sectional sawtooth shape with irregularities extending in the axial direction of the slot. desirable.
  • the inner wall of the slot that contacts the outer layer magnet is formed in a sawtooth cross section, so that when the permanent magnet is press-fitted into the slot The outer layer magnet that comes into contact with the inner wall of the slot is easily scraped, and the press-fitting load of the permanent magnet is further reduced. Further, the contact area between the inner wall of the slot and the outer layer magnet increases in the state where the permanent magnet is assembled in the slot.
  • another aspect of the present invention provides a method for manufacturing a rotor including a rotor core, a plurality of slots formed in the rotor core, and a permanent magnet assembled to each of the plurality of slots.
  • a permanent magnet manufacturing step of manufacturing a permanent magnet comprising an outer layer magnet and an inner layer magnet provided inside the outer layer magnet, the strength of the outer layer magnet being smaller than the strength of the inner layer magnet, and the permanent magnet in each slot.
  • a permanent magnet assembling step in which a part of the outer layer magnet is pressed into contact with the inner wall of the slot while being cut.
  • a permanent magnet in the permanent magnet manufacturing step, a permanent magnet is manufactured that includes an outer layer magnet and an inner layer magnet provided inside the outer layer magnet, and the strength of the outer layer magnet is smaller than that of the inner layer magnet.
  • the permanent magnet assembling step the permanent magnet is press-fitted into each slot while scraping a part of the outer layer magnet in contact with the inner wall of the slot. Accordingly, when the permanent magnet is press-fitted into the slot, the outer layer magnet having a low strength is scraped, so that the press-fitting load becomes relatively small. At this time, the strong inner layer magnet is accommodated in the slot without being cut.
  • the outer layer magnet In the state where the permanent magnet is assembled in the slot, the outer layer magnet is interposed between the inner layer magnet and the inner wall of the slot, and there is no gap between the permanent magnet and the inner wall of the slot.
  • the width of the inner layer magnet is smaller than the width of the slot, and the entire width of the permanent magnet including the outer layer magnet is larger than the width of the slot. desirable.
  • the inner layer magnet is accommodated in the slot without contacting the inner wall of the slot because the width of the inner layer magnet is smaller than the width of the slot. Since the width of the permanent magnet including the outer layer magnet is larger than the width of the slot, the outer layer magnet is scraped by the larger width.
  • the permanent magnet can be securely fixed to the rotor core slot while ensuring the magnet performance.
  • FIG. 2 is a sectional view taken along line 2-2 of FIG. 1 showing the rotor according to the same embodiment.
  • the top view which expands and shows the part of the permanent magnet enclosed with the chain-line ellipse of FIG. 1 about the rotor concerning the embodiment.
  • the top view which expands and shows the part of the slot enclosed with the chain-line ellipse of FIG. 4 about the rotor core concerning the embodiment.
  • FIG. 6 is a sectional view taken along line 6-6 of FIG. 5 showing a portion of one slot of the rotor core according to the same embodiment.
  • FIG. 4 is a schematic diagram showing one process of a “permanent magnet manufacturing process” according to the embodiment.
  • FIG. 4 is a schematic diagram showing one process of a “permanent magnet manufacturing process” according to the embodiment.
  • FIG. 4 is a schematic diagram showing one process of a “permanent magnet manufacturing process” according to the embodiment.
  • FIG. 4 is a schematic diagram showing one process of a “permanent magnet manufacturing process” according to the embodiment.
  • FIG. 4 is a schematic diagram illustrating a process of a “permanent magnet assembly process” according to the embodiment.
  • FIG. 4 is a schematic diagram illustrating a process of a “permanent magnet assembly process” according to the embodiment.
  • FIG. 4 is a schematic diagram illustrating a process of a “permanent magnet assembly process” according to the embodiment.
  • the top view according to FIG. 3 which concerns on 2nd Embodiment and expands and shows the part of a permanent magnet about a rotor.
  • FIG. 6 is a plan view similar to FIG. 5 showing an enlarged slot portion of the rotor core according to the same embodiment; The top view which concerns on another embodiment and shows a permanent magnet.
  • FIG. 1 is a plan view showing the rotor 11 of this embodiment.
  • FIG. 2 shows the rotor 11 by a cross-sectional view taken along line 2-2 of FIG.
  • this rotor 11 includes a rotor core 12 having a cylindrical shape, a single shaft fastening hole 13 formed at the center of the rotor core 12, and a rotor shaft assembled to the shaft fastening hole 13. 14.
  • the rotor core 12 is configured by laminating a plurality of electromagnetic steel plates 22.
  • a plurality of slots 15 that are arranged at equiangular intervals and penetrate in the axial direction of the rotor core 12 are formed on the outer periphery of the rotor core 12.
  • the plurality of slots 15 are arranged along the outer peripheral edge of the rotor core 12, and are arranged so that two adjacent slots 15 form a “C” shape or “reverse C shape”.
  • a permanent magnet 16 for field is assembled and fixed.
  • a plurality (“8” in this embodiment) of lightening holes 17 are formed around the shaft tightening hole 13 between the shaft tightening hole 13 and the plurality of slots 15. .
  • These thinning holes 17 have a substantially trapezoidal shape in plan view and penetrate the rotor core 12 in the axial direction.
  • These thinning holes 17 are arranged one by one between two pairs of slots 15 having an “inverted C shape”.
  • the rotor shaft 14 has a cylindrical shape, and a flange 14a that engages with the rotor core 12 is formed on the outer periphery thereof.
  • the rotor shaft 14 is formed by forging a metal material.
  • the rotor shaft 14 is assembled to the shaft tightening hole 13 of the rotor core 12 by intermediate fitting or press fitting.
  • FIG. 3 is an enlarged plan view of the portion of the permanent magnet 16 surrounded by the chain ellipse S1 of FIG.
  • a first bridge portion 18 is formed between two adjacent slots 15 having an “inverted C shape” as a meat portion that divides both slots 15.
  • a second bridge portion 19 as a flesh portion is formed between each slot 15 and the outer peripheral edge of the rotor core 12.
  • the second permanent magnet 16 in each slot 15 is moved closer to the stator located around the rotor 11. It is necessary to make the width of the bridge portion 19 as small as possible.
  • a permanent magnet 16 having a rectangular shape in plan view is assembled to the slot 15.
  • the permanent magnet 16 all of the two long sides and a part of the two short sides are in contact with the inner walls 15 a and 15 b of the slot 15.
  • FIG. 4 is a plan view showing the rotor core 12 before the permanent magnet 16 is assembled.
  • FIG. 5 is an enlarged plan view of the portion of the slot 15 surrounded by the chain ellipse S2 in FIG.
  • FIG. 6 shows a portion of one slot 5 by a sectional view taken along line 6-6 in FIG.
  • FIG. 7 is a plan view showing the permanent magnet 16.
  • FIG. 8 shows the permanent magnet 16 by a cross-sectional view taken along line 8-8 in FIG.
  • the permanent magnet 16 includes a pair of outer layer magnets 16a and 16b and an inner layer magnet 16c provided inside the outer layer magnets 16a and 16b.
  • the strength of the outer layer magnets 16a and 16b is set smaller than the strength of the inner layer magnet 16c.
  • the permanent magnet 16 has an inner layer magnet 16c sandwiched between two outer layer magnets 16a and 16b.
  • the inner layer magnet 16c has the same strength and magnetic force as a general permanent magnet conventionally used for a rotor.
  • the basic materials constituting the inner layer magnet 16c and the outer layer magnets 16a and 16b are the same.
  • the particle size of the material of the outer layer magnets 16a and 16b can be increased, or the material can be made into a blending component that hardly melts and solidifies at the grain boundaries.
  • the permanent magnet 16 is fixed in the slot 15 by contacting the inner walls 15a and 15b of the slot 15 with the outer layer magnets 16a and 16b shaved off.
  • the width W1 of the inner layer magnet 16c shown in FIGS. 7 and 8 is set smaller than the width W2 of the slot 15 shown in FIG.
  • the entire width W3 of the permanent magnet 16 including the outer layer magnets 16a and 16b shown in FIGS. 7 and 8 is set larger than the width W2 of the slot 15 shown in FIG.
  • FIG. 9 is a flowchart showing this manufacturing method.
  • 10 to 12 schematically show a series of processes constituting the “permanent magnet manufacturing process”.
  • 13 to 15 are sectional views showing a series of processes constituting the “permanent magnet assembling step”.
  • a plurality of electromagnetic steel sheets 22 are formed into the same shape.
  • the electromagnetic steel plate 22 is formed by pressing a thin plate material of about “0.3 mm”.
  • the rotor core 12 is manufactured by laminating the plurality of electromagnetic steel sheets 22 formed in the above process.
  • the electromagnetic steel plates 22 stacked one above the other are joined together by “caulking”.
  • a plurality of permanent magnets 16 are manufactured.
  • a permanent magnet is produced by forming a magnet material into a predetermined shape by a well-known method and then firing it. This step can be performed in parallel with each step described above.
  • a material 26a constituting one outer layer magnet 16a is filled in a lower die 31 for molding, and the upper die 32 is clamped and compressed, whereby the material 26a is flattened.
  • the material 26a in the lower mold 31 is filled with the material 26c constituting the inner layer magnet 16c, and the upper mold 32 is clamped and compressed, whereby the material 26c is compressed.
  • the material 26a is integrally formed with a flat plate shape.
  • the material 26b in the lower mold 31 is further filled with the material 26b constituting the other outer layer magnet 16b, and the upper mold 32 is clamped and compressed.
  • the material 26b is integrally formed with the materials 26a and 26c into a flat plate having a three-layer structure. Thereafter, the work formed into the three-layer structure is fired to complete the production of the permanent magnet 16.
  • the permanent magnet 16 manufactured as described above is assembled in each slot 15 of the rotor core 12 manufactured as described above. Fix it. That is, as shown in FIG. 13, the permanent magnets 16 are aligned and press-fitted into the slots 15 of the rotor core 12. At this time, as shown in FIG. 14, the permanent magnet 16 is press-fitted while the outer layer magnets 16 a and 16 b located on both sides of the inner layer magnet 16 c are partly brought into contact with the inner walls 15 a and 15 b of the slot 15 and shaved. When the press-fitting is completed as shown in FIG.
  • the permanent magnet 16 is fixed in the slot 15 by contacting the inner walls 15a, 15b of the slot 15 with the outer layer magnets 16a, 16b being partially cut away. Is done. In other words, the permanent magnet 16 is fixed in the slot 15 with the outer layer magnets 16 a and 16 b interposed between the inner layer magnet 16 c and the inner walls 15 a and 15 b of the slot 15.
  • the rotor shaft manufacturing step shown in FIG. 9 (5), the rotor shaft 14 is manufactured by a well-known forging method. This step can be performed in parallel with each step described above.
  • the rotor shaft 14 is assembled by intermediate fitting or press fitting into the shaft fastening hole 13 shown in FIG. In this way, the manufacture of the rotor 11 shown in FIGS. 1 and 2 can be completed.
  • the outer layer magnets 16 a and 16 b having low strength are brought into contact with the inner walls 15 a and 15 b of the slot 15 to be permanently cut away.
  • the magnet 16 is press-fitted into the slot 15.
  • the width W3 of the permanent magnet 16 including the outer layer magnets 16a and 16b is larger than the width W2 of the slot 15, the outer layer magnets 16a and 16b are scraped by the larger width W3.
  • the outer layer magnets 16a and 16b having low strength are scraped, so that the press-fit load of the permanent magnet 16 becomes relatively small. For this reason, the equipment for press-fitting the permanent magnet 16 into the slot 15 can be made small and inexpensive.
  • the inner layer magnet 16c is accommodated in the slot 15 without contacting the inner walls 15a, 15b of the slot 15. That is, the strong inner layer magnet 16c is accommodated in the slot 15 without being cut. For this reason, breakage such as a crack does not occur in the inner layer magnet 16c having the same magnet performance as a general permanent magnet. In this sense, the magnet performance of the permanent magnet 16 in the slot 15 can be ensured.
  • the outer layer magnets 16 a and 16 b are interposed between the inner layer magnet 16 c and the inner walls 15 a and 15 b of the slot 15. There is no gap (air gap) between the inner wall 15a, 15b of the slot 15. For this reason, the permanent magnet 16 can be reliably fixed to the slot 15. Further, the magnetic performance of the permanent magnet 16 can be improved as compared with the case where there is an air gap between the inner wall of the slot and the permanent magnet.
  • the permanent magnet 16 can be reliably fixed while securing the magnet performance in the slot 15 of the rotor core 12.
  • the cutting allowance can be set appropriately. In this sense, the formation accuracy of the slots 15 and the permanent magnets 16 can be relaxed, and their processing costs can be reduced.
  • the outer layer magnets 16 a and 16 b and the inner layer magnet 16 c provided inside the outer layer magnets 16 a and 16 b are provided, and the strength of the outer layer magnets 16 a and 16 b is increased.
  • the permanent magnet 16 is made smaller than the strength of the inner layer magnet 16c.
  • the permanent magnet 16 is press-fitted into each slot 15 while a part of the outer layer magnets 16 a and 16 b is in contact with the inner walls 15 a and 15 b of the slot 15.
  • the outer layer magnets 16a and 16b having a low strength are scraped, so that the press-fitting load of the permanent magnet 16 becomes relatively small.
  • the equipment for press-fitting the permanent magnet 16 into the slot 15 can be made small and inexpensive.
  • the strong inner layer magnet 16c is accommodated in the slot 15 without being cut. For this reason, breakage such as a crack does not occur in the inner layer magnet 16c having magnet performance equivalent to that of a general permanent magnet. In this sense, the magnet performance of the permanent magnet 16 in the slot 15 can be ensured.
  • the outer layer magnets 16 a and 16 b are interposed between the inner layer magnet 16 c and the inner walls 15 a and 15 b of the slot 15. No air gap between 15b. For this reason, the permanent magnet 16 can be reliably fixed to the slot 15. Further, the magnetic performance of the permanent magnet 16 can be improved as compared with the case where there is an air gap between the inner wall of the slot and the permanent magnet.
  • the permanent magnet 16 can be reliably fixed while securing the magnet performance in the slot 15 of the rotor core 12.
  • FIG. 16 is an enlarged plan view of the permanent magnet 16 of the rotor 11 according to FIG.
  • FIG. 17 is an enlarged plan view of the slot 15 of the rotor core 12 according to FIG.
  • the inner walls 15 a and 15 b of the slot 15 that come into contact with the outer layer magnets 16 a and 16 b of the permanent magnet 16 are formed in a sawtooth cross-section extending in the axial direction of the slot 15.
  • the inner walls 15a and 15b of the slot 15 that come into contact with the outer layer magnets 16a and 16b are formed in a sawtooth cross section, so that when the permanent magnet 16 is press-fitted into the slot 15, the outer layer A part of the magnets 16a and 16b is easily scraped, and the press-fit load is further reduced. For this reason, the working efficiency of the “permanent magnet assembling step” can be improved. In addition, the effect of preventing damage such as cracking of the permanent magnet 16 can be enhanced.
  • the outer magnets 16a and 16b are provided on the two opposing surfaces of the inner magnet 16c for the permanent magnet 16.
  • the above two magnets are arranged in accordance with the magnetic performance of the permanent magnet and the processing convenience.
  • An outer layer magnet may be provided on a surface other than the surface.
  • the permanent magnet 16 can be configured by providing outer layer magnets 16d on the four outer peripheral surfaces of the inner layer magnet 16e.
  • the rotor core 12 is configured by laminating a plurality of electromagnetic steel plates 22, but the configuration of the rotor core is not limited to this, for example, the rotor core is formed by forging. You can also
  • the present invention can be used for manufacturing a motor used in an electric vehicle or the like.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

L'invention concerne un rotor muni : d'un noyau de rotor ; d'une pluralité de fentes formées dans le noyau de rotor; et d'aimants permanents qui sont montés dans chacune de la pluralité de fentes. Les aimants permanents sont munis d'un aimant de couche extérieure et d'un aimant de couche intérieure qui est situé à l'intérieur de l'aimant de couche extérieure, l'intensité des aimants de couche extérieure étant réglée de manière à être inférieure à l'intensité des aimants de couche intérieure. La largeur des aimants de couche intérieure est inférieure à la largeur des fentes, et la largeur globale des aimants permanents, y compris les aimants de couche extérieure, est supérieure à la largeur des fentes. Les aimants permanents sont fixés à l'intérieur des fentes en étant mis en contact avec les parois intérieures des fentes, une partie de l'aimant de couche extérieure étant ébarbée.
PCT/JP2010/056396 2010-04-08 2010-04-08 Rotor et son procédé de fabrication WO2011125209A1 (fr)

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Application Number Priority Date Filing Date Title
PCT/JP2010/056396 WO2011125209A1 (fr) 2010-04-08 2010-04-08 Rotor et son procédé de fabrication

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Application Number Priority Date Filing Date Title
PCT/JP2010/056396 WO2011125209A1 (fr) 2010-04-08 2010-04-08 Rotor et son procédé de fabrication

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WO2011125209A1 true WO2011125209A1 (fr) 2011-10-13

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015510388A (ja) * 2012-03-13 2015-04-02 ブローゼ・ファールツォイクタイレ・ゲーエムベーハー・ウント・コンパニ・コマンディットゲゼルシャフト・ヴュルツブルク 電気機械
JP2015116025A (ja) * 2013-12-11 2015-06-22 株式会社安川電機 回転電機
WO2023104738A1 (fr) * 2021-12-06 2023-06-15 Lenze Se Procédé de fabrication d'un rotor
FR3143904A1 (fr) * 2022-12-16 2024-06-21 Valeo Equipements Electriques Moteur Rotor de machine électrique tournante et machine électrique tournante correspondante

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10304610A (ja) * 1997-04-22 1998-11-13 Toshiba Corp 永久磁石回転子及び永久磁石回転子用抜き板の製造方法
JP2005057955A (ja) * 2003-08-07 2005-03-03 Toyoda Mach Works Ltd モータ及びその回転子の製造方法
JP2006174537A (ja) * 2004-12-13 2006-06-29 Toyota Motor Corp ロータの製造方法およびロータ

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10304610A (ja) * 1997-04-22 1998-11-13 Toshiba Corp 永久磁石回転子及び永久磁石回転子用抜き板の製造方法
JP2005057955A (ja) * 2003-08-07 2005-03-03 Toyoda Mach Works Ltd モータ及びその回転子の製造方法
JP2006174537A (ja) * 2004-12-13 2006-06-29 Toyota Motor Corp ロータの製造方法およびロータ

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015510388A (ja) * 2012-03-13 2015-04-02 ブローゼ・ファールツォイクタイレ・ゲーエムベーハー・ウント・コンパニ・コマンディットゲゼルシャフト・ヴュルツブルク 電気機械
US9831726B2 (en) 2012-03-13 2017-11-28 Brose Fahrzeugteile Gmbh & Co. Kg, Wuerzburg Electrical machine
US9876397B2 (en) 2012-03-13 2018-01-23 Brose Fahrzeugteile Gmbh & Co. Kg, Wuerzburg Electrical machine
JP2015116025A (ja) * 2013-12-11 2015-06-22 株式会社安川電機 回転電機
WO2023104738A1 (fr) * 2021-12-06 2023-06-15 Lenze Se Procédé de fabrication d'un rotor
FR3143904A1 (fr) * 2022-12-16 2024-06-21 Valeo Equipements Electriques Moteur Rotor de machine électrique tournante et machine électrique tournante correspondante

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