JP4888568B2 - 異方性を連続方向制御した希土類−鉄系リング磁石の製造方法 - Google Patents
異方性を連続方向制御した希土類−鉄系リング磁石の製造方法 Download PDFInfo
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- JP4888568B2 JP4888568B2 JP2009539955A JP2009539955A JP4888568B2 JP 4888568 B2 JP4888568 B2 JP 4888568B2 JP 2009539955 A JP2009539955 A JP 2009539955A JP 2009539955 A JP2009539955 A JP 2009539955A JP 4888568 B2 JP4888568 B2 JP 4888568B2
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
- H01F41/0273—Imparting anisotropy
- H01F41/028—Radial anisotropy
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- 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
- H02K1/278—Surface mounted magnets; Inset magnets
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
- H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
- H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
- H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
- H01F1/0578—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together bonded together
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
- H01F1/059—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and Va elements, e.g. Sm2Fe17N2
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49009—Dynamoelectric machine
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49069—Data storage inductor or core
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49075—Electromagnet, transformer or inductor including permanent magnet or core
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49075—Electromagnet, transformer or inductor including permanent magnet or core
- Y10T29/49078—Laminated
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49803—Magnetically shaping
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49805—Shaping by direct application of fluent pressure
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Description
本発明は、次の2つの工程を必須とする。その1つは、磁石の機械的設計とともに、一定方向に保たれた一様な磁界によって、面垂直から面内に異方性の方向が連続変化したセグメントを作製する工程である。すなわち、作製されたセグメントにおいては、異方性の方向が、一様な磁界を受けた面に対して垂直となる方向からその面の広がり方向へと連続的に変化している。もう1つは、複数のこれらセグメントを円周上に配置し、当該セグメントの一方のスラスト方向端面から、当該セグメントの粘性変形に基づくレオロジーによりリング状に押出し、続いてセグメントのスラスト方向両端面から圧縮する工程である。
以下、本発明にかかる異方性を連続方向制御した希土類−鉄系リング磁石について、8極12スロット表面磁石型同期モータ(SPMSM)を対象とした実施例により、さらに詳しく説明する。ただし、本発明が本実施例に限定されるものではない。
11 内外周切片
20 セグメント磁石
21 スラスト方向セグメント端面
30 押出成形用コア
35 押出圧縮成形ダイス
40 押出圧縮成形したリング磁石
41 離型し、熱硬化したリング磁石
42 ロータ鉄心
43 リング磁石ロータ
φ 機械角
Mc (磁極中心(ラジアル領域)の)磁化ベクトル角
Md (磁極端(非ラジアル領域)の)磁化ベクトル角
Hex 外部磁界
Hθ (外部磁界の)角度
Claims (5)
- 一様な外部磁界Hexの方向とロータの任意の機械角φに対応する内外周方向接線との角度を角度Hθとしたとき、機械角φに対応した角度Hθの変化を与える内外周切片をもつセグメントを外部磁界Hexによる磁界中で成形加工する第1の工程と、
複数のセグメントを極数に応じて円周上に配置し、当該セグメントの一方のスラスト方向端面から、その粘性変形に基づくレオロジーを利用してリング状に押出し、続いて、当該セグメントのスラスト方向両端面から圧縮成形することで異方性を連続方向制御する第2の工程とを含む、
ことを特徴とした異方性を連続方向制御した希土類−鉄系リング磁石の製造方法。 - 回転軸中心を原点とした固定子鉄心ティースの機械角をφs、回転軸中心を原点としたロータ磁極中心の機械角をφrとしたとき、φs≒φrに相当する領域で磁極の回転方向接線に対する磁化ベクトル角Mcの90度に対する誤差平均が2度以下、前記磁化ベクトル角Mcから隣接する磁極の90度領域Mcに至る非ラジアル領域の磁化ベクトル角をMdとしたとき、機械角φと磁化ベクトル角Mdとの回帰式の相関係数rが0.995以上である請求項1記載の異方性を連続方向制御した希土類−鉄系リング磁石の製造方法。
- 予備成形セグメントとリング磁石との残留磁化Mrの差が0.03T以下、異方性分散σの差が7%未満である請求項1記載の異方性を連続方向制御した希土類−鉄系リング磁石の製造方法。
- リング磁石の異方性方向の残留磁化Mrが0.95〜1.05T、保磁力HcJが0.85〜0.95MA/m、エネルギー密度(BH)maxが160〜180kJ/m3である請求項1記載の異方性を連続方向制御した希土類−鉄系リング磁石の製造方法。
- リング磁石の直径が25mm以下である請求項1記載の異方性を連続方向制御した希土類−鉄系リング磁石の製造方法。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP2009539955A JP4888568B2 (ja) | 2008-05-23 | 2009-05-20 | 異方性を連続方向制御した希土類−鉄系リング磁石の製造方法 |
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JP2008135146 | 2008-05-23 | ||
JP2008135146 | 2008-05-23 | ||
JP2009539955A JP4888568B2 (ja) | 2008-05-23 | 2009-05-20 | 異方性を連続方向制御した希土類−鉄系リング磁石の製造方法 |
PCT/JP2009/002214 WO2009142005A1 (ja) | 2008-05-23 | 2009-05-20 | 異方性を連続方向制御した希土類-鉄系リング磁石の製造方法 |
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JPWO2009142005A1 JPWO2009142005A1 (ja) | 2011-09-29 |
JP4888568B2 true JP4888568B2 (ja) | 2012-02-29 |
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Country Status (5)
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US (1) | US8371021B2 (ja) |
JP (1) | JP4888568B2 (ja) |
KR (1) | KR101206576B1 (ja) |
CN (1) | CN102742131B (ja) |
WO (1) | WO2009142005A1 (ja) |
Families Citing this family (9)
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DE102010063323A1 (de) * | 2010-12-17 | 2012-06-21 | Robert Bosch Gmbh | Verfahren zur Herstellung einer Maschinenkomponente für eine elektrische Maschine sowie eine Maschinenkomponente |
US10511212B2 (en) * | 2011-10-07 | 2019-12-17 | Minebea Mitsumi Inc. | Inner rotor-type permanent magnet motor with annular magnetic poles |
JP5860654B2 (ja) * | 2011-10-07 | 2016-02-16 | ミネベア株式会社 | インナーロータ型永久磁石モータ |
KR101706607B1 (ko) * | 2012-08-31 | 2017-02-15 | 더 스위치 드라이브 시스템즈 오와이 | 영구 자석 전기 기계의 로터 |
CN104252964B (zh) * | 2013-06-28 | 2016-09-21 | 浙江科升电力设备有限公司 | 一种变压器辐射型铁心柱制作方法 |
CN103817790B (zh) * | 2013-08-22 | 2016-01-27 | 苏州混凝土水泥制品研究院有限公司 | 一种磁圈与Halbach阵列的制作方法 |
DE102013217857B4 (de) * | 2013-09-06 | 2015-07-30 | Robert Bosch Gmbh | Stator für eine elektrische Maschine und Verfahren zum Herstellen eines solchen Stators |
CN105405570B (zh) * | 2014-09-12 | 2017-07-25 | 上海日立电器有限公司 | 压缩机用粘结钕铁硼环形磁铁的充磁方法 |
JP7255349B2 (ja) * | 2019-05-17 | 2023-04-11 | Tdk株式会社 | モータ装置 |
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FR2114151A5 (ja) * | 1970-11-18 | 1972-06-30 | Sermag | |
JPS6252913A (ja) * | 1985-09-02 | 1987-03-07 | Hitachi Metals Ltd | 多極異方性円筒状磁石の製造方法及び装置 |
WO1993022778A1 (en) * | 1992-04-28 | 1993-11-11 | Sumitomo Special Metals Company Limited | Cylinder type anisotropic magnets and their manufacturing methods and motors |
JP2003347142A (ja) | 2002-05-27 | 2003-12-05 | Mitsubishi Electric Corp | 円筒状異方性磁石の製造方法および円筒状異方性磁石 |
KR100579914B1 (ko) * | 2003-08-13 | 2006-05-15 | 자화전자 주식회사 | 적층극이방복합자석의 제조방법 |
JP4033112B2 (ja) | 2003-11-21 | 2008-01-16 | 松下電器産業株式会社 | 自己組織化したハイブリッド型希土類ボンド磁石とその製造方法、並びにモータ |
EP1995854B1 (en) * | 2006-03-16 | 2016-09-07 | Panasonic Corporation | Radial anisotropic magnet manufacturing method, permanent magnet motor using radial anisotropic magnet, iron core-equipped permanent magnet motor |
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2009
- 2009-05-20 WO PCT/JP2009/002214 patent/WO2009142005A1/ja active Application Filing
- 2009-05-20 KR KR1020107005767A patent/KR101206576B1/ko active IP Right Grant
- 2009-05-20 CN CN200980100584.7A patent/CN102742131B/zh active Active
- 2009-05-20 US US12/680,869 patent/US8371021B2/en active Active
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Publication number | Publication date |
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KR101206576B1 (ko) | 2012-11-29 |
WO2009142005A1 (ja) | 2009-11-26 |
US20100218365A1 (en) | 2010-09-02 |
JPWO2009142005A1 (ja) | 2011-09-29 |
CN102742131B (zh) | 2014-12-10 |
KR20100043100A (ko) | 2010-04-27 |
CN102742131A (zh) | 2012-10-17 |
US8371021B2 (en) | 2013-02-12 |
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