JP2009165273A - Stator core structure for rotary electric machine and its manufacturing method - Google Patents

Stator core structure for rotary electric machine and its manufacturing method Download PDF

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Publication number
JP2009165273A
JP2009165273A JP2008000697A JP2008000697A JP2009165273A JP 2009165273 A JP2009165273 A JP 2009165273A JP 2008000697 A JP2008000697 A JP 2008000697A JP 2008000697 A JP2008000697 A JP 2008000697A JP 2009165273 A JP2009165273 A JP 2009165273A
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Prior art keywords
stator
magnetic pole
claw magnetic
rotor
core
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Kota Makiyama
高大 牧山
Toshiya Teramae
俊哉 寺前
Shigeyasu Ueno
恵尉 上野
Yuji Enomoto
裕治 榎本
Yoshitoshi Ishikawa
芳壽 石川
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Hitachi Ltd
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Hitachi Ltd
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Priority to JP2008000697A priority Critical patent/JP2009165273A/en
Priority to PCT/JP2008/071862 priority patent/WO2009087835A1/en
Publication of JP2009165273A publication Critical patent/JP2009165273A/en
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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
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • H02K1/145—Stator cores with salient poles having an annular coil, e.g. of the claw-pole type
    • 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
    • H02K15/022—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies with salient poles or claw-shaped poles

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that an obtained formed object has low strength, it drops a power factor and has a large electric time constant and therefore controllability lacks in a conventional rotary electric machine using a dust core for a core. <P>SOLUTION: A claw magnetic pole constituting a claw pole motor is formed by using iron plates such as a magnetic steel plate, a cold rolled steel plate and electromagnetic stainless steel. A stator of the rotary electric machine is provided with a stator winding wound to an external side of a rotator in a ring shape and a stator core having stator claw magnetic poles which alternately extend from both sides in an axial direction in a part confronted with the rotator. The steel plates are laminated in the stator core. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、電力電機用、産業用、家電用、自動車用などに幅広く使用されるモータ、発電機などの幅広い回転電機の構造およびその製造方法に関するものである。   The present invention relates to a structure of a wide range of rotating electrical machines such as motors and generators widely used for electric power, industrial, household appliances, automobiles, and the like, and a manufacturing method thereof.

モータ、発電機などの回転電機は、誘導電動機、永久磁石同期電動機、直流整流子モータなど、種々の形式のモータ、発電機がある。これらの回転機は、ほとんどが巻き線と鉄心で構成され、巻き線に電流を流すことで鉄心が電磁石となることを利用して回転力を得る原理が採用されている。   Rotating electric machines such as motors and generators include various types of motors and generators such as induction motors, permanent magnet synchronous motors, and DC commutator motors. Most of these rotating machines are composed of a winding and an iron core, and the principle of obtaining a rotational force by utilizing the fact that the iron core becomes an electromagnet by passing an electric current through the winding is adopted.

これらのモータは、固定子、または回転子を鉄などの強磁性体の鉄心で構成し、その鉄心に設けたスロットと呼ばれる溝に巻き線を施すことで構成される。通常、鉄心には電磁鋼板などの鉄損の少ない薄手の鉄板の表面に絶縁コーティングしたものを複数枚積み重ねて鉄心を構成する。これは、巻き線や磁石の磁束が変化するのに伴って発生する渦電流を抑えるためである。図３０（ａ）には、固定子と回転子の関係を示し、図３０（ｂ）には固定子と回転子を備えた回転電機の例を示す。   These motors are configured by forming a stator or a rotor with a ferromagnetic iron core such as iron and winding a groove called a slot provided in the iron core. Usually, an iron core is formed by stacking a plurality of insulating coatings on the surface of a thin iron plate having a small iron loss such as an electromagnetic steel plate. This is to suppress eddy currents that occur as the magnetic flux of the windings and magnets changes. FIG. 30A shows the relationship between the stator and the rotor, and FIG. 30B shows an example of a rotating electrical machine including the stator and the rotor.

一般的にモータは高効率であることが望まれており、これらの構造のモータでは、銅損と鉄損を低減することで高効率化が達成できる。銅損は、コイルの抵抗をいかに小さくするかがポイントであり、鉄心のスロット内の巻き線（導体）の割合（占積率）を高くすることと、コイルエンドと呼ばれる鉄心の積層方向ではみだした部分を小さくすることが銅損の低減につながる。鉄損は、鉄板などのヒステリシス損と渦電流損を小さくすることが必要である。   In general, motors are desired to have high efficiency, and motors of these structures can achieve high efficiency by reducing copper loss and iron loss. The point of copper loss is how to reduce the resistance of the coil. It increases in the winding ratio (space factor) of the winding (conductor) in the slot of the core and in the stacking direction of the core called the coil end. Smaller parts lead to reduced copper loss. As for iron loss, it is necessary to reduce hysteresis loss and eddy current loss of an iron plate or the like.

上記より、銅損、鉄損を低減してモータを小型化する構造が提案されている。例えば、特許文献１では、コイルエンドを軸方向になくす構造で、占積率も同時に向上でき、高密度で高抵抗の特性を有する圧粉磁心を鉄心に採用してモータの鉄損も低減するモータ構造が示されている。このモータ構造では、固定子鉄心の軸方向にコイルエンド有さないために小型化も図れるとされている。
特開２００６−２９６１８８号公報 From the above, a structure for reducing the motor loss by reducing copper loss and iron loss has been proposed. For example, Patent Document 1 has a structure in which the coil end is eliminated in the axial direction, the space factor can be improved at the same time, and a powder magnetic core having high density and high resistance characteristics is adopted for the iron core to reduce the iron loss of the motor. The motor structure is shown. In this motor structure, since there is no coil end in the axial direction of the stator iron core, it is said that miniaturization can be achieved.
JP 2006-296188 A

上記従来技術においては、鉄心に圧粉磁心を用いるために、種々の問題が残されている。ひとつには、圧粉磁心を用いるために、大型化が困難であることである。圧粉磁心は、絶縁皮膜の施された鉄粉を非常に高圧力で押し固める方法で製造される。このときの圧力は、密度７．４Ｍｇ／ｍ３の成形体を得るのに１ＧＰａと非常に大きい。これからわかるとおり、１００ｃｍ２程度の面積を持つ成形体を得るためのプレスは、１０００トンにもなり、大きいものを作ることが困難であることがわかる。 In the prior art described above, various problems remain because a dust core is used for the iron core. One is that it is difficult to increase the size because a dust core is used. The dust core is manufactured by a method in which iron powder coated with an insulating film is pressed at a very high pressure. The pressure at this time is as high as 1 GPa to obtain a molded body having a density of 7.4 Mg / m 3 . As can be seen from this, the press for obtaining a molded body having an area of about 100 cm 2 is 1000 tons, and it is difficult to make a large product.

また、そのような製造方法であるがゆえに、得られた成形体は非常に強度が低いという問題がある。圧縮成形されただけの成形体で、曲げ強度が最大でも１５０ＭＰａ程度の強度しかないため、鉄心だけの強度ではモータの強度メンバとしては不十分なため、モールドなどの強度向上策が必要であった。   Moreover, since it is such a manufacturing method, there exists a problem that the obtained molded object has very low intensity | strength. Since it is a compact that has only been compression-molded and has only a bending strength of about 150 MPa at the maximum, the strength of the iron core alone is not sufficient as a strength member of the motor. .

さらに、この圧粉磁心は錆びやすいという性質も有しているために、自動車用など、塩水、泥水などにさらされる過酷な環境下で使用される用途には不向きであるなどの欠点を多く有している。   Furthermore, the dust core has the property of being easily rusted, and thus has many drawbacks such as being unsuitable for applications such as those used in harsh environments exposed to salt water and muddy water. is doing.

また、設計的な制限事項としては、そのモータ構造より、コイルのインダクタンスが大きくなるという問題がある。コイル全体を磁性体で覆う構造とするために、どうしてもインダクタンスが大きくなってしまうのである。インダクタンスが大きくなると、電流と電圧の位相差が大きくなりモータや発電機の主要特性である力率を低下させる。また、電気的な時定数も大きくなるので制御性に欠けるといった特性上の問題が発生する。   Further, as a design limitation, there is a problem that the inductance of the coil becomes larger than that of the motor structure. Since the entire coil is covered with a magnetic material, the inductance is inevitably increased. When the inductance increases, the phase difference between current and voltage increases and the power factor, which is the main characteristic of motors and generators, is reduced. In addition, since the electrical time constant becomes large, there arises a problem in characteristics such as lack of controllability.

本発明の目的は、上記課題を解決すべく、前記特許文献１記載のクローポール型モータの大型化、高強度化、対環境性能向上、コイルインダクタンス低減を同時に満足して、高効率で小形の回転電気、すなわち電動機や発電機を提供することにある。   In order to solve the above problems, the object of the present invention is to simultaneously satisfy the increase in size, increase in strength, improvement in environmental performance, and reduction in coil inductance of the claw pole type motor described in Patent Document 1, with high efficiency and small size. It is to provide rotating electricity, that is, an electric motor and a generator.

本発明は上記目的を達成するために、クローポール型モータの固定子鉄心を圧粉磁心以外の高強度な磁性体を用いて構成する。そして、磁気回路として必要最低限の磁性体以外の部分を無くす構造とする。   In order to achieve the above-mentioned object, the present invention comprises a stator core of a claw pole motor using a high-strength magnetic material other than a dust core. And it is set as the structure which eliminates parts other than a minimum necessary magnetic body as a magnetic circuit.

具体的には、クローポールモータを構成する爪磁極を電磁鋼板、冷間圧延鋼板、電磁ステンレスなどの鉄板を用いて構成し、回転電機は、回転自在に設けられた回転子と、該回転子の外周と対向する部位に設けられた固定子とを有する回転電機において、前記固定子は前記回転子の外側に環状に巻装された固定子巻線と、前記回転子と対向する部位に軸方向両側からそれぞれが交互に延びる固定子爪磁極を有した固定子鉄心とで構成され、前記固定子鉄心が鋼板を積層することで構成されている。   Specifically, the claw magnetic poles constituting the claw pole motor are configured by using an iron plate such as an electromagnetic steel plate, a cold-rolled steel plate, or an electromagnetic stainless steel. In the rotating electrical machine having a stator provided at a portion facing the outer periphery of the rotor, the stator is configured to have a stator winding that is annularly wound around the outer side of the rotor, and a shaft that is disposed at a portion facing the rotor. The stator core includes stator claw magnetic poles extending alternately from both sides in the direction, and the stator core is configured by laminating steel plates.

このとき、軸方向に配置する１相分の固定子の相対位置関係は、２相回転電機であれば、電機角で９０度ずつ、すなわち回転子側の一極対あたりの機械的な角度の１／４ずらして配置する必要がある。また、３相回転電機であれば、電機角で１２０度ずつ、すなわち回転子側の一極対あたりの機械的な角度の１／３ずらして配置する必要がある。また、固定子側はずらさないで配置した場合においては、回転子側の固定子に対応する部分の極をそれぞれ上記のように複数相回転電機を構成する角度に配置することでも実現できる。   At this time, the relative positional relationship of the stator for one phase arranged in the axial direction is 90 degrees in terms of the electrical angle for a two-phase rotating electrical machine, that is, the mechanical angle per one pole pair on the rotor side. It is necessary to dispose by 1/4. In the case of a three-phase rotating electric machine, it is necessary to dispose the electric angle by 120 degrees, that is, by shifting the mechanical angle per one pole pair on the rotor side by 1/3. Further, when the stator side is arranged without being shifted, it can be realized by arranging the poles of the portion corresponding to the stator on the rotor side at the angles constituting the multi-phase rotating electrical machine as described above.

また、上記目的を達成するための回転電機の製造方法は、鋼板から環状の素材を切抜く第１工程と、前記素材に前記固定子爪磁極部と前記固定子背面部とを成形する第２工程と、前記成形した素材を積層する第３工程と、前記積層した素材を接合する第４工程とを備えている。   The rotating electrical machine manufacturing method for achieving the above object includes a first step of cutting an annular material from a steel plate, and a second step of forming the stator claw magnetic pole portion and the stator back portion on the material. A step, a third step of laminating the molded material, and a fourth step of joining the laminated material.

また、本発明の固定子を有する回転電機における回転子は、種々の形式のものが適用可能である。表面磁石型回転子、埋め込み磁石型回転子、スリップリングとブラシを有する直流界磁型ルンデルタイプ回転子、また、誘導子を有するかご型回転子、リラクタンス型回転子など回転電機として成立する回転子の全てに対応が可能である。   Further, various types of rotors can be applied to the rotor in the rotating electrical machine having the stator of the present invention. Rotation established as a rotating electrical machine such as surface magnet type rotor, embedded magnet type rotor, DC field type Rundel type rotor with slip ring and brush, cage type rotor with inductor, reluctance type rotor, etc. It can handle all of the children.

システムとしては、回転電機を利用する広い範囲のシステムに適用が可能である。モータ、または発電機など、多種のシステムで利用可能であるが、課題で述べた錆びによる劣化に対して強くなったこと、機械的強度の向上、インダクタンスの低減などが見込めるため、車載用の発電機システムに採用が可能となる。   The system can be applied to a wide range of systems using a rotating electrical machine. Although it can be used in various systems such as motors or generators, it can be expected to be resistant to deterioration due to rust, improved mechanical strength, and reduced inductance. It can be used in the machine system.

本発明により、圧粉磁心で構成するクローポールモータに比べ、渦電流による鉄損を大幅に低減することができる。本発明のクローポール型回転電機は、小形で、高効率、低温度上昇とできる。また、強度の問題が解決できるため、高信頼性の製品が供給可能である   According to the present invention, iron loss due to eddy current can be significantly reduced as compared with a claw pole motor constituted by a dust core. The claw pole type rotating electric machine of the present invention is small in size, can be highly efficient, and can be increased in temperature. In addition, since the problem of strength can be solved, highly reliable products can be supplied.

以下、図面を用いて、本発明の実施の形態について説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

本発明の実施例１を図１、２に基づいて説明する。図１は固定子１相分の斜視図、図２は固定子１相分の分解斜視図である。   A first embodiment of the present invention will be described with reference to FIGS. 1 is a perspective view of one phase of the stator, and FIG. 2 is an exploded perspective view of one phase of the stator.

図１に示す回転電機の固定子１は固定子鉄心２と固定子巻線３から構成される。また、図２に示すように固定子鉄心２は爪磁極部４、背面部６、側面部５から構成される素材を軸方向に積層したものである。固定子鉄心２は同形状の部品を、背面部６の軸方向端面７を合わせることで構成される。このため、固定子巻線３の巻装を容易にすることができる。   A stator 1 of the rotating electrical machine shown in FIG. 1 includes a stator core 2 and a stator winding 3. Further, as shown in FIG. 2, the stator core 2 is formed by laminating a material composed of a claw magnetic pole portion 4, a back surface portion 6, and a side surface portion 5 in the axial direction. The stator core 2 is configured by combining parts of the same shape with the axial end surface 7 of the back surface portion 6. For this reason, winding of the stator winding | coil 3 can be made easy.

固定子鉄心２は爪磁極部４、背面部６、側面部５が一体の鋼板から構成されているが、固定子鉄心２を構成する鋼板を電磁鋼板とした場合、回転電機の出力特性を向上させることが可能である。この時、必ずしも固定子鉄心２の全ての層を電磁鋼板にする必要は無い。   The stator core 2 is composed of a steel plate in which the claw magnetic pole portion 4, the back surface portion 6 and the side surface portion 5 are integrated. When the steel plate constituting the stator core 2 is an electromagnetic steel plate, the output characteristics of the rotating electrical machine are improved. It is possible to make it. At this time, it is not always necessary to use electromagnetic steel sheets for all layers of the stator core 2.

また、固定子鉄心２を構成する鋼板の板厚は必ずしも全ての層で同じにする必要は無く、例えば、回転子に近い層の板厚を薄くすることで、回転電機の特性向上が可能であったり、例えば回転子に近い層の板厚を厚くすることで、爪磁極部４の軸中心方向への剛性を高くすることが可能であったりする。   In addition, the thickness of the steel plates constituting the stator core 2 does not necessarily have to be the same for all layers. For example, by reducing the thickness of the layers close to the rotor, the characteristics of the rotating electrical machine can be improved. For example, by increasing the thickness of the layer close to the rotor, it is possible to increase the rigidity of the claw magnetic pole portion 4 in the axial center direction.

図３に爪磁極部４にスリット８を入れた固定子鉄心２の１磁極分の斜視図および、爪磁極部４の横断面形状を示す。爪磁極部４にスリット８を入れることで渦電流を低減することが可能である。また、このスリット８は必ずしも貫通する必要は無く、図３の（ｂ）から（ｄ）に示される三角形状の凹凸９、矩形形状の凹凸１０、のこぎり歯の凹凸１１などもよい。また、スリット８は必ずしも軸方向に平行である必要は無く、例えば爪磁極部４の中心から広がる放射状や、軸方向に垂直な方向であっても良い。また、スリット８および三角形状の凹凸９、矩形形状の凹凸１０、のこぎり歯の凹凸１１などは必ずしも線状である必要は無く、例えばディンプルのように爪磁極部４に垂直な方向から見て円形または楕円または多角形であっても良い。   FIG. 3 shows a perspective view of one magnetic pole of the stator core 2 having a slit 8 in the claw magnetic pole part 4 and a cross-sectional shape of the claw magnetic pole part 4. It is possible to reduce the eddy current by inserting the slit 8 in the claw magnetic pole part 4. Further, the slit 8 does not necessarily have to penetrate, and may be a triangular unevenness 9, a rectangular unevenness 10, a sawtooth unevenness 11 or the like shown in FIGS. 3B to 3D. The slits 8 are not necessarily parallel to the axial direction, and may be, for example, a radial shape extending from the center of the claw magnetic pole portion 4 or a direction perpendicular to the axial direction. Further, the slits 8 and the triangular irregularities 9, the rectangular irregularities 10, the sawtooth irregularities 11 and the like do not necessarily have to be linear, and are circular when viewed from a direction perpendicular to the claw magnetic pole part 4, for example, dimples. Or an ellipse or a polygon may be sufficient.

図４は固定子鉄心２の横断面を示している。爪磁極部４と側面部５の交わる角部１２の半径が、爪磁極部４の長さの０．２倍以下とすることで、回転電機の出力特性を確保することができる。   FIG. 4 shows a cross section of the stator core 2. By setting the radius of the corner portion 12 where the claw magnetic pole portion 4 and the side surface portion 5 intersect to be 0.2 times or less the length of the claw magnetic pole portion 4, the output characteristics of the rotating electrical machine can be ensured.

図５に本発明の実施例１の製造方法の第１の例を示す。鋼板から環状の素材１３を切抜き、切抜いた素材１３の１枚に対して爪磁極部４および背面部６を成形し、成形した素材１３を積層し、積層した素材１３同士を接合する工程からなる。図６に本発明の実施例１の製造方法の第２の例を示す。鋼板から環状の素材１３を切抜き、切抜いた素材１３を積層し、素材１３を積層させた状態で素材１３に爪磁極部４および背面部６を成形し、成形した素材１３同士を接合する工程からなる。   FIG. 5 shows a first example of the manufacturing method according to the first embodiment of the present invention. An annular material 13 is cut out from a steel plate, the claw magnetic pole portion 4 and the back surface portion 6 are formed on one of the cut out materials 13, the formed material 13 is laminated, and the laminated materials 13 are joined together. . FIG. 6 shows a second example of the manufacturing method according to the first embodiment of the present invention. From the step of cutting the annular material 13 from the steel plate, laminating the cut material 13, forming the claw magnetic pole portion 4 and the back surface portion 6 on the material 13 in a state where the material 13 is laminated, and joining the formed materials 13 to each other. Become.

鋼板から環状の素材１３を切抜く工程では、例えばせん断加工、ワイヤーカット、レーザー切断、ウォータージェット、あるいは機械加工などによって所望の形状に切抜く。   In the step of cutting the annular material 13 from the steel plate, it is cut into a desired shape by, for example, shearing, wire cutting, laser cutting, water jet, or machining.

切抜いた素板を積層する工程では、素材１３の軸中心および爪磁極部４に成形される部分の中心をそろえ、素材１３の板厚方向に積層する。   In the step of laminating the cut base plates, the axial center of the material 13 and the center of the portion formed on the claw magnetic pole portion 4 are aligned, and the material 13 is laminated in the thickness direction.

切抜いた素材１３に爪磁極部４および背面部６を成形する工程では、例えば、図７の（ａ）に示すように素材１３を側面部成形工具１５上に置き、爪磁極部４の面外への曲げ成形および固定子鉄心２の周方向形状を成形するための円筒形状の爪磁極部成形工具１６と、背面部６の面外への曲げ成形および固定子鉄心２の周方向形状を成形するための円筒形状の空間を有する背面部成形工具１４を、図７の（ｂ）のように、押込むことによって爪磁極部４および背面部６を成形する。また、図７では固定した側面部成形工具１５に対して、爪磁極部成形工具１６および背面部成形工具１４を押込んでいるが、固定した爪磁極部成形工具１６および背面部成形工具１４に対して、側面部成形工具１５を押込んでも良い。   In the step of forming the claw magnetic pole portion 4 and the back surface portion 6 on the cut material 13, for example, the material 13 is placed on the side surface forming tool 15 as shown in FIG. And cylindrical claw pole part forming tool 16 for forming the circumferential shape of the stator core 2 and bending of the back surface portion 6 out of the surface and forming the circumferential shape of the stator core 2. As shown in FIG. 7B, the claw magnetic pole portion 4 and the back surface portion 6 are formed by pressing a back surface forming tool 14 having a cylindrical space for the purpose. Further, in FIG. 7, the claw magnetic pole part forming tool 16 and the back surface forming tool 14 are pressed into the fixed side part forming tool 15, but the fixed claw magnetic pole part forming tool 16 and the back part forming tool 14 are pressed. The side surface forming tool 15 may be pushed in.

また、切抜いた素材１３に爪磁極部４および背面部６を成形する工程において図８の（ａ）に示すように、側面部成形工具１５に素材１３を挟んで対向する側面部成形対向工具１７により、板厚方向に荷重を負荷しながら、図８の（ｂ）のように、爪磁極部４および背面部６を成形することで、側面部５の周方向および軸方向への変形を拘束し、所望の成形への成形が容易となる。また、爪磁極部４を成形後に爪磁極部成形工具１６を抜く工程において、側面部成形工具１５と側面部成形対向工具１７により板厚方向に加圧保持することで、爪磁極部４と爪磁極部成形工具１６間に生じる摩擦に起因する爪磁極部４の軸方向への変形を抑制することが可能である。   Further, in the step of forming the claw magnetic pole portion 4 and the back surface portion 6 in the cut material 13, as shown in FIG. 8A, the side surface forming opposing tool 17 facing the side surface portion forming tool 15 with the material 13 interposed therebetween. By forming the claw magnetic pole part 4 and the back surface part 6 as shown in FIG. 8B while applying a load in the plate thickness direction, the deformation of the side surface part 5 in the circumferential direction and the axial direction is restrained. In addition, molding into a desired molding becomes easy. Further, in the step of removing the claw magnetic pole part forming tool 16 after the claw magnetic pole part 4 is formed, the claw magnetic pole part 4 and the claw are pressed and held in the plate thickness direction by the side part forming tool 15 and the side part forming opposing tool 17. It is possible to suppress the deformation of the claw magnetic pole part 4 in the axial direction due to the friction generated between the magnetic pole part forming tools 16.

また、切抜いた素材１３に爪磁極部４および背面部６を成形する工程において側面部成形対向工具１７を用いない場合では、爪磁極部４の成形および背面部６の成形を同一ストロークで行う必要があるが、側面部成形対向工具１７を用いた場合では、図９および図１０に示すように、爪磁極部４の成形と背面部６の成形を別ストロークで成形することが可能となる。   Moreover, when the side part shaping | molding opposing tool 17 is not used in the process of shape | molding the nail | claw magnetic pole part 4 and the back surface part 6 to the cut-out raw material 13, it is necessary to perform the shaping | molding of the claw magnetic pole part 4 and the shaping | molding of the back surface part 6 by the same stroke. However, when the side surface forming counter tool 17 is used, as shown in FIGS. 9 and 10, the claw magnetic pole portion 4 and the back surface portion 6 can be formed with different strokes.

また、切抜いた素材１３に爪磁極部４および背面部６を成形する工程において図１１に示すように、爪磁極部成形工具１６に素材１３を挟んで対向する爪磁極部成形対向工具１８により、素材１３板厚方向に荷重を負荷した状態で成形することで、爪磁極成形部１９が曲げ曲げ戻し変形を受けるため、爪磁極部４成形後に生じる爪磁極４の半径方向中心向きの倒れを低減することが可能である。   Further, in the step of forming the claw magnetic pole portion 4 and the back surface portion 6 in the cut material 13, as shown in FIG. 11, the claw magnetic pole portion forming opposing tool 18 facing the claw magnetic pole portion forming tool 16 with the material 13 interposed therebetween, By forming the material 13 with a load applied in the plate thickness direction, the claw magnetic pole forming portion 19 undergoes bending and bending back deformation, so that the claw magnetic pole 4 is prevented from being tilted toward the center in the radial direction after the claw magnetic pole portion 4 is formed. Is possible.

また、切抜いた素材１３に爪磁極部４および背面部６を成形する工程において図１２に示すように、背面部成形工具１４に素材１３を挟んで対向する背面部成形対向工具２０により、素材１３板厚方向に荷重を負荷した状態で成形することで、背面部未成形部２１において面外への変形が拘束されるため、背面部６の成形後に生じる背面部６のしわを抑制することが可能である。   Further, as shown in FIG. 12, in the step of forming the claw magnetic pole portion 4 and the back surface portion 6 in the cut out material 13, the material 13 is formed by the back surface forming counter tool 20 facing the back surface forming tool 14 with the material 13 interposed therebetween. By molding in a state in which a load is applied in the plate thickness direction, deformation of the rear surface portion unmolded portion 21 to the out-of-plane is restrained, and thus wrinkles of the rear surface portion 6 that occur after the rear surface portion 6 is molded can be suppressed. Is possible.

製造方法の第１の例では素材１３が１枚の状態で爪磁極部４および背面部６を成形するため、爪磁極部４と側面部５をつなぐ角１２の半径を小さくすることが可能である。ただし、各層において同じ寸法形状の素材１３を用いた場合、図１３の（ａ）に示すように各層にでは側面部６が異なるため、爪磁極部先端部２２および背面部先端部２３が揃わない。この時、機械加工などにより爪磁極部先端部２２および背面部先端部２３をそろえても良いが、各層での素材１３の寸法を成形後の寸法に合わせておくことで、図１３の（ｂ）に示すように爪磁極部先端部２２および背面部先端部２３をそろえることができ、機械加工などが省略可能となる。   In the first example of the manufacturing method, the claw magnetic pole portion 4 and the back surface portion 6 are formed with a single material 13, so the radius of the corner 12 connecting the claw magnetic pole portion 4 and the side surface portion 5 can be reduced. is there. However, when the material 13 having the same size and shape is used in each layer, the side surface portion 6 is different in each layer as shown in FIG. 13A, and therefore the claw pole portion tip portion 22 and the back portion tip portion 23 are not aligned. . At this time, the claw pole tip 22 and the back tip 23 may be aligned by machining or the like, but by matching the dimensions of the material 13 in each layer with the dimensions after molding, as shown in FIG. ), The claw magnetic pole portion tip portion 22 and the back portion tip portion 23 can be aligned, and machining or the like can be omitted.

製造方法の第２の例では、積層した状態で爪磁極部４および背面部６を成形するため、爪磁極部４および側面部５の成形工程数を低減させることが可能である。ただし、爪磁極部４と側面部５をつなぐ角１２の半径を、積層した板厚の合計した寸法より小さくすることができないため、例えば図１４の（ａ）に示すように、爪磁極部先端押込み工具２４にて、軸方向（矢印方向）に押込むことで、図１４の（ｂ）のように爪磁極部４と側面部５をつなぐ角１２の半径を小さくすることができる。   In the second example of the manufacturing method, the claw magnetic pole portion 4 and the back surface portion 6 are formed in a stacked state, and therefore the number of forming steps of the claw magnetic pole portion 4 and the side surface portion 5 can be reduced. However, since the radius of the corner 12 connecting the claw magnetic pole portion 4 and the side surface portion 5 cannot be made smaller than the total dimension of the laminated plate thicknesses, for example, as shown in FIG. By pushing in the axial direction (arrow direction) with the pushing tool 24, the radius of the corner 12 connecting the claw magnetic pole part 4 and the side face part 5 can be reduced as shown in FIG.

成形した素材１３を積層する工程では、成形した素材１３の軸中心および成形した爪磁極部４の周方向位置を、背面部６の外周半径が板厚分大きい、爪磁極部４および背面部６を成形した素材１３に順次積層する。   In the step of laminating the molded material 13, the claw magnetic pole portion 4 and the back surface portion 6 are arranged such that the outer peripheral radius of the back surface portion 6 is larger by the thickness of the axial center of the molded material 13 and the circumferential position of the formed claw magnetic pole portion 4. Are sequentially laminated on the molded material 13.

素材１３同士を接合する工程では、例えば爪磁極部先端部２２または背面部先端部２３の少なくとも一方をレーザー溶接したり、接着剤を用いて、隣接する素材１３と順次接合したり、図１５の（ａ）に示すような素材１３板厚方向に半抜きされて形成された凸部２５と凹部２６を図１５の（ｂ）のように合わせる事で接合する。また、この接合工程は積層と同じ工程または積層工程より後工程で行う。   In the step of joining the materials 13 to each other, for example, at least one of the claw pole portion tip portion 22 or the back portion tip portion 23 is laser welded, or sequentially joined to the adjacent material 13 using an adhesive, as shown in FIG. As shown in FIG. 15B, the convex portions 25 and the concave portions 26 formed by being half-cut in the thickness direction of the material 13 as shown in FIG. In addition, this joining step is performed in the same step as the lamination or in a later step than the lamination step.

また、前述の製造方法の第１の例および前述の製造方法の第２の例を組合わせた、次に示すような製造方法でもよい。鋼板から環状の素材１３を切抜き、切抜いた素材１３の爪磁極部４を成形し、成形した素材１３を積層し、積層した素材１３の背面部６を成形し、成形した素材１３を接合する工程からなる、または、鋼板から環状の素材１３を切抜き、切抜いた素材１３の背面部６を成形し、成形した素材１３を積層し、積層した素材１３の爪磁極部４を成形し、成形した素材１３を接合する工程からなる。あるいは、鋼板から環状の素材１３を切抜き、切抜いた素材１３を、固定子鉄心２を構成する積層枚数未満の枚数を積層し、積層した素材１３に爪磁極部４および背面部６を成形し、成形した素材１３を積層し、積層した素材１３を接合する工程からなる。   Further, the following manufacturing method may be used, which is a combination of the first example of the manufacturing method described above and the second example of the manufacturing method described above. Cutting the annular material 13 from the steel plate, forming the claw magnetic pole portion 4 of the cut material 13, laminating the formed material 13, forming the back surface portion 6 of the laminated material 13, and joining the formed material 13 Or an annular material 13 cut out from a steel plate, a back surface portion 6 of the cut material 13 is formed, the formed material 13 is laminated, a claw magnetic pole portion 4 of the laminated material 13 is formed, and the formed material 13 of joining. Alternatively, the annular material 13 is cut out from the steel plate, the cut material 13 is laminated in a number less than the number of layers constituting the stator core 2, and the claw magnetic pole part 4 and the back surface part 6 are formed on the laminated material 13. It consists of a process of laminating the molded material 13 and joining the laminated material 13.

図１６に本発明の実施例１の製造方法の第３の例を示す。鋼板から１磁極分または複数磁極分の素材１３を切抜き、切抜いた素材１３の１枚に対して爪磁極部４および背面部６を成形し、成形した素材１３を積層し、積層した素材１３同士を接合、周方向に組立てる工程からなる。図１７に本発明の実施例１の製造方法の第２の例を示す。鋼板から１磁極分または複数磁極分の素材１３を切抜き、切抜いた素材１３を積層し、素材１３を積層させた状態で素材１３に爪磁極部４および背面部６を成形し、成形した素材１３同士を接合し、周方向に組立てる工程からなる。   FIG. 16 shows a third example of the manufacturing method according to the first embodiment of the present invention. The material 13 for one magnetic pole or a plurality of magnetic poles is cut out from the steel plate, the claw magnetic pole part 4 and the back surface part 6 are formed on one piece of the cut out material 13, the formed material 13 is laminated, and the laminated materials 13 are laminated together. Are joined and assembled in the circumferential direction. FIG. 17 shows a second example of the manufacturing method according to the first embodiment of the present invention. The material 13 for one magnetic pole or a plurality of magnetic poles is cut out from the steel plate, the cut material 13 is laminated, the claw magnetic pole portion 4 and the back surface portion 6 are formed on the material 13 in a state where the material 13 is laminated, and the formed material 13 It consists of a process of joining together and assembling them in the circumferential direction.

鋼板から１磁極分または複数磁極分の素材１３を切抜く工程では、例えばせん断加工、ワイヤーカット、レーザー切断、ウォータージェット、あるいは機械加工などによって所望の形状に切抜く。   In the step of cutting the material 13 for one magnetic pole or a plurality of magnetic poles from the steel plate, the material 13 is cut into a desired shape by, for example, shearing, wire cutting, laser cutting, water jet, or machining.

切抜いた素板を積層する工程では、爪磁極部４に成形される部分の中心をそろえ、素材１３の板厚方向に積層する。   In the step of stacking the cut base plates, the centers of the portions formed in the claw magnetic pole portion 4 are aligned, and the raw materials 13 are stacked in the thickness direction.

切抜いた素材１３に爪磁極部４および背面部６を成形する工程では、例えば素板を側面部成形工具１５上に置き、爪磁極部４の面外への曲げ成形および固定子鉄心２周方向形状を成形するための横断面が凸の円弧形状であるの爪磁極部成形工具１６と、背面部６の面外への曲げ成形および固定子鉄心２周方向形状を成形するための横断面が凹の円弧形状である背面部成形工具１４を、押込むことによって爪磁極部４および背面部６を成形する。また、固定した側面部成形工具１５に対して、爪磁極部成形工具１６および背面部成形工具１４を押込んでもよいし、固定した爪磁極部成形工具１６および背面部成形工具１４に対して、側面部成形工具１５を押込んでも良い。   In the step of forming the claw magnetic pole portion 4 and the back surface portion 6 into the cut material 13, for example, a base plate is placed on the side surface portion forming tool 15, and the claw magnetic pole portion 4 is bent out of the plane and the stator core 2 circumferential directions. The claw pole part forming tool 16 having a convex arc shape in cross section for forming the shape, and the cross section for forming the back surface part 6 in the out-of-plane bending and shape in the circumferential direction of the stator core. The claw magnetic pole portion 4 and the back surface portion 6 are formed by pressing the back surface forming tool 14 having a concave arc shape. Further, the claw pole part forming tool 16 and the back part forming tool 14 may be pushed into the fixed side part forming tool 15, or the fixed claw pole part forming tool 16 and the back part forming tool 14 may be pressed. The side surface forming tool 15 may be pushed in.

また、切抜いた素材１３に爪磁極部４および背面部６を成形する工程において、側面部成形工具１５に素材１３を挟んで対向する側面部成形対向工具１７により、板厚方向に荷重を負荷しながら爪磁極部４および背面部６を成形することで、側面部５の周方向および軸方向への変形を拘束し、所望の成形への成形が容易となる。また、爪磁極または背面部６の少なくとも一方の成形後に、対応する爪磁極部成形工具１６または背面部成形工具１４を抜く工程において、側面部成形工具１５と側面部成形対向工具１７により板厚方向に加圧保持することで、爪磁極と爪磁極部成形工具１６間または背面部６と背面部成形工具１４間に生じる摩擦に起因する爪磁極部４または背面部６のの軸方向への変形を抑制することが可能である。   Further, in the step of forming the claw magnetic pole portion 4 and the back surface portion 6 on the cut material 13, a load is applied in the plate thickness direction by the side surface forming opposing tool 17 facing the side surface forming tool 15 with the material 13 interposed therebetween. However, by forming the claw magnetic pole portion 4 and the back surface portion 6, the deformation of the side surface portion 5 in the circumferential direction and the axial direction is restrained, and molding into a desired shape becomes easy. Further, in the step of removing the corresponding claw pole part forming tool 16 or the back part forming tool 14 after forming at least one of the claw magnetic pole or the back part 6, the side part forming tool 15 and the side part forming opposing tool 17 are used in the plate thickness direction. The claw magnetic pole portion 4 or the back surface portion 6 is deformed in the axial direction due to friction generated between the claw magnetic pole and the claw magnetic pole portion forming tool 16 or between the back surface portion 6 and the back surface portion forming tool 14. Can be suppressed.

また、切抜いた素材１３に爪磁極部４および背面部６を成形する工程において側面部成形対向工具１７を用いない場合では、爪磁極部４の成形および背面部６の成形を同一ストロークで行う必要があるが、側面部成形対向工具１７を用いた場合では、爪磁極部４の成形と背面部６の成形を別ストロークで成形することが可能となる。   Moreover, when the side part shaping | molding opposing tool 17 is not used in the process of shape | molding the nail | claw magnetic pole part 4 and the back surface part 6 to the cut-out raw material 13, it is necessary to perform the shaping | molding of the claw magnetic pole part 4 and the shaping | molding of the back surface part 6 by the same stroke. However, when the side surface forming counter tool 17 is used, the claw magnetic pole portion 4 and the back surface portion 6 can be formed with different strokes.

また、切抜いた素材１３に爪磁極部４および背面部６を成形する工程において、爪磁極部成形工具１６に素材１３を挟んで対向する爪磁極部成形対向工具１８により、素材１３板厚方向に荷重を負荷した状態で成形することで、爪時磁極成形部が曲げ曲げ戻し変形を受けるため、爪磁極部４成形後に生じる爪磁極成形部１９の半径方向中心向きの倒れを低減することが可能である。   Further, in the step of forming the claw magnetic pole portion 4 and the back surface portion 6 on the cut material 13, the claw magnetic pole portion forming opposed tool 18 that faces the claw magnetic pole portion forming tool 16 with the material 13 interposed therebetween is used in the material 13 plate thickness direction. By molding with the load applied, the claw magnetic pole forming part is subjected to bending and bending back deformation, so that it is possible to reduce the collapse of the claw magnetic pole forming part 19 toward the center in the radial direction that occurs after the claw magnetic pole part 4 is formed. It is.

また、切抜いた素材１３に爪磁極部４および背面部６を成形する工程において、背面部成形工具１４に素材１３を挟んで対向する背面部成形対向工具２０により、素材１３板厚方向に荷重を負荷した状態で成形することで、背面部６未成形部において面外への変形が拘束されるため、背面部６成形後に生じる背面部６成形部のしわを抑制することが可能あり、背面部６成形部が曲げ曲げ戻し変形を受けるため、背面部６成形後に生じる爪磁極成形部の半径方向外向きの倒れを低減することが可能である。   Further, in the step of forming the claw magnetic pole portion 4 and the back surface portion 6 in the cut material 13, a load is applied in the material 13 plate thickness direction by the back surface forming counter tool 20 facing the back surface forming tool 14 with the material 13 interposed therebetween. By molding in a loaded state, the deformation to the out-of-plane is restrained in the unmolded portion of the back surface 6, so that it is possible to suppress the wrinkles of the back surface 6 molded portion that occurs after the back surface 6 is molded. Since the 6 molded portion undergoes bending and bending back deformation, it is possible to reduce the outward collapse of the claw magnetic pole molded portion that occurs after the back surface portion 6 is molded.

製造方法の第３の例では素材１３が１枚の状態で爪磁極部４および背面部６を成形するため、爪磁極部４と側面部５をつなぐ角１２の半径を小さくすることが可能である。ただし、各層において同じ寸法形状の素材１３を用いた場合、図１３（ａ）に示すように各層にでは側面部６が異なるため、爪磁極部先端部２２および背面部先端部２３が揃わない。この時、機械加工などにより爪磁極部先端部２２および背面部先端部２３をそろえても良いが、各層での素材１３の寸法を成形後の寸法に合わせておくことで、図１３（ｂ）に示すように爪磁極部先端部２２および背面部先端部２３をそろえることができ、機械加工などが省略可能となる。   In the third example of the manufacturing method, the claw magnetic pole portion 4 and the back surface portion 6 are formed with a single material 13, so the radius of the corner 12 connecting the claw magnetic pole portion 4 and the side surface portion 5 can be reduced. is there. However, when the material 13 having the same size and shape is used in each layer, the side surface portion 6 is different in each layer as shown in FIG. 13A, and therefore the claw magnetic pole portion tip portion 22 and the back portion tip portion 23 are not aligned. At this time, the claw pole tip 22 and the back tip 23 may be aligned by machining or the like. However, by adjusting the dimensions of the material 13 in each layer to the dimensions after molding, FIG. As shown in FIG. 4, the claw magnetic pole portion tip 22 and the back portion tip 23 can be aligned, and machining or the like can be omitted.

製造方法の第４の例では、積層した状態で爪磁極部４および背面部６を成形するため、爪磁極部４および側面部５の成形工程数を低減させることが可能である。ただし、爪磁極部４と側面部５をつなぐ角１２の半径を、積層した板厚の合計した寸法より小さくすることができないため、例えば図１４に示すように、爪磁極部先端押込み工具２４にて、軸方向に押込むことで爪磁極部４と側面部５をつなぐ角１２の半径を小さくすることができる。   In the fourth example of the manufacturing method, the claw magnetic pole portion 4 and the back surface portion 6 are formed in a stacked state, and therefore the number of forming steps of the claw magnetic pole portion 4 and the side surface portion 5 can be reduced. However, since the radius of the corner 12 connecting the claw magnetic pole portion 4 and the side surface portion 5 cannot be made smaller than the total dimension of the laminated plate thicknesses, for example, as shown in FIG. Thus, by pushing in the axial direction, the radius of the corner 12 connecting the claw magnetic pole portion 4 and the side surface portion 5 can be reduced.

成形した素材１３を積層する工程では、成形した素材１３の軸中心および成形した爪磁極部４の周方向位置を、背面部６の外周半径が板厚分大きい、爪磁極部４および背面部６を成形した素材１３に順次積層する。   In the step of laminating the molded material 13, the claw magnetic pole portion 4 and the back surface portion 6 are arranged such that the outer peripheral radius of the back surface portion 6 is larger by the thickness of the axial center of the molded material 13 and the circumferential position of the formed claw magnetic pole portion 4. Are sequentially laminated on the molded material 13.

素材１３同士を接合する工程では、例えば爪磁極部先端部２２または背面部先端部２３の少なくとも一方をレーザー溶接したり、接着剤を用いて、隣接する素材１３と順次接合したり、図１５に示すような素材１３板厚方向に半抜きされて形成された凸部２５と凹部２６を合わせる事で接合する。また、この接合工程は積層と同じ工程または積層工程より後工程で行う。   In the step of joining the materials 13 to each other, for example, at least one of the claw magnetic pole tip 22 or the back tip 23 is laser-welded, or sequentially joined to the adjacent material 13 using an adhesive, as shown in FIG. As shown, the material 13 is joined by combining the convex part 25 and the concave part 26 formed by being half-cut in the plate thickness direction. In addition, this joining step is performed in the same step as the lamination or in a later step than the lamination step.

また、前述の製造方法の第３の例および前述の製造方法の第４の例を組合わせた、次に示すような製造方法でもよい。鋼板から環状の素材１３を切抜き、切抜いた素材１３の爪磁極部４を成形し、成形した素材１３を積層し、積層した素材１３の背面部６を成形し、成形した素材１３を接合する工程からなる、または、鋼板から環状の素材１３を切抜き、切抜いた素材１３の背面部６を成形し、成形した素材１３を積層し、積層した素材１３の爪磁極部４を成形し、成形した素材１３を接合する工程からなる。あるいは、鋼板から環状の素材１３を切抜き、切抜いた素材１３を固定子鉄心２を構成する積層枚数未満の枚数を積層し、積層した素材１３に爪磁極部４および背面部６を成形し、成形した素材１３を積層し、積層した素材１３を接合する工程からなる。   Further, the following manufacturing method may be used, which is a combination of the third example of the above manufacturing method and the fourth example of the above manufacturing method. Cutting the annular material 13 from the steel plate, forming the claw magnetic pole portion 4 of the cut material 13, laminating the formed material 13, forming the back surface portion 6 of the laminated material 13, and joining the formed material 13 Or an annular material 13 cut out from a steel plate, a back surface portion 6 of the cut material 13 is formed, the formed material 13 is laminated, a claw magnetic pole portion 4 of the laminated material 13 is formed, and the formed material 13 of joining. Alternatively, the annular material 13 is cut out from the steel plate, the cut material 13 is laminated in a number less than the number of layers constituting the stator core 2, and the claw magnetic pole portion 4 and the back surface portion 6 are formed on the laminated material 13. The material 13 is laminated, and the laminated material 13 is joined.

図１８に本発明の実施例１の製造方法の第５の例を示す。帯状の連続した鋼板から素材１３を切抜き、切抜いた素材１３の爪磁極部４または背面部６の少なくとも一方を成形する工程と、成形した素材１３をらせん状に積層する工程と、積層した素材１３を接合する工程からなる。   FIG. 18 shows a fifth example of the manufacturing method according to the first embodiment of the present invention. The material 13 is cut out from the strip-shaped continuous steel sheet, the step of forming at least one of the claw magnetic pole portion 4 or the back surface portion 6 of the cut-out material 13, the step of laminating the formed material 13 in a spiral shape, and the layered material 13 It consists of the process of joining.

帯所の連続した鋼板から素材１３を切抜く工程では、例えばせん断加工、ワイヤーカット、レーザー切断、ウォータージェット、あるいは機械加工などによって所望の形状に切抜く。   In the process of cutting the material 13 from the continuous steel plate, the material 13 is cut into a desired shape by, for example, shearing, wire cutting, laser cutting, water jet, or machining.

切抜いた帯状の素板１３に対して、例えばロールフォーミングにより、爪磁極部４または背面部６の少なくとも一方を成形するとともに、帯状の素材１３を周方向に成形し、らせん状に積層し、接合する。この時、爪磁極部４または背面部６は成形されていなくてもよく、接合後、成形されていない部分を本発明の実施例１の製造方法の第２の例のように成形しても良い。   For the cut strip-shaped base plate 13, at least one of the claw magnetic pole portion 4 or the back surface portion 6 is formed by roll forming, for example, and the strip-shaped material 13 is formed in the circumferential direction, laminated in a spiral shape, and bonded To do. At this time, the claw magnetic pole portion 4 or the back surface portion 6 may not be molded, and after bonding, the non-molded portion may be molded as in the second example of the manufacturing method of Embodiment 1 of the present invention. good.

図１９に本発明の実施例１の製造方法の第６の例を示す。鋼板から素材１３を切抜き、切抜いた素材１３を積層し、積層した素材１３の爪磁極部４および背面部６を成形し、成形した素材１３を接合し、接合した素材１３を環状にする工程からなる。また、切抜いた素材１３の爪磁極部４および背面部６を成形し、成形した素材を積層してもよい。   FIG. 19 shows a sixth example of the manufacturing method according to the first embodiment of the present invention. From the step of cutting the material 13 from the steel plate, laminating the cut material 13, forming the claw magnetic pole portion 4 and the back surface portion 6 of the laminated material 13, joining the formed material 13, and making the joined material 13 annular Become. Further, the claw magnetic pole portion 4 and the back surface portion 6 of the cut material 13 may be formed and the formed materials may be laminated.

鋼板から素材１３を切抜く工程では、例えばせん断加工、ワイヤーカット、レーザー切断、ウォータージェット、あるいは機械加工などによって所望の形状に切抜く。   In the step of cutting the material 13 from the steel plate, the material 13 is cut into a desired shape by, for example, shearing, wire cutting, laser cutting, water jet, or machining.

切抜いた素板を積層する工程では、爪磁極部４に成形される部分の中心をそろえ、素材１３の板厚方向に積層する。
切抜いた素材１３に爪磁極部４および背面部６を成形する工程では、例えば素板を側面部成形工具１５上に置き、爪磁極部４の面外への曲げ成形するための爪磁極部成形工具１６と、背面部６の面外への曲げ成形するための背面部成形工具１４を、押込むことによって爪磁極部４および背面部６を成形する。また、固定した側面部成形工具１５に対して、爪磁極部成形工具１６および背面部成形工具１４を押込んでもよいし、固定した爪磁極部成形工具１６および背面部成形工具１４に対して、側面部成形工具１５を押込んでも良い。 In the step of stacking the cut base plates, the centers of the portions formed in the claw magnetic pole portion 4 are aligned, and the raw materials 13 are stacked in the thickness direction.
In the step of forming the claw magnetic pole part 4 and the back surface part 6 in the cut material 13, for example, a base plate is placed on the side part forming tool 15 and the claw magnetic pole part forming for bending the claw magnetic pole part 4 out of the plane is performed. The claw magnetic pole portion 4 and the back surface portion 6 are formed by pressing the tool 16 and the back surface forming tool 14 for bending the back surface portion 6 out of the plane. Further, the claw pole part forming tool 16 and the back part forming tool 14 may be pushed into the fixed side part forming tool 15, or the fixed claw pole part forming tool 16 and the back part forming tool 14 may be pressed. The side surface forming tool 15 may be pushed in.

また、切抜いた素材１３に爪磁極部４および背面部６を成形する工程において、側面部成形工具１５に素材１３を挟んで対向する側面部成形対向工具１７により、板厚方向に荷重を負荷しながら爪磁極部４および背面部６を成形することで、側面部５の周方向および軸方向への変形を拘束し、所望の成形への成形が容易となる。また、爪磁極または背面部６の少なくとも一方の成形後に、対応する爪磁極部成形工具１６または背面部成形工具１４を抜く工程において、側面部成形工具１５と側面部成形対向工具１７により板厚方向に加圧保持することで、爪磁極と爪磁極部成形工具１６間または背面部６と背面部成形工具１４間に生じる摩擦に起因する爪磁極部４または背面部６の軸方向への変形を抑制することが可能である。   Further, in the step of forming the claw magnetic pole portion 4 and the back surface portion 6 on the cut material 13, a load is applied in the plate thickness direction by the side surface forming opposing tool 17 facing the side surface forming tool 15 with the material 13 interposed therebetween. However, by forming the claw magnetic pole portion 4 and the back surface portion 6, the deformation of the side surface portion 5 in the circumferential direction and the axial direction is restrained, and molding into a desired shape becomes easy. Further, in the step of removing the corresponding claw pole part forming tool 16 or the back part forming tool 14 after forming at least one of the claw magnetic pole or the back part 6, the side part forming tool 15 and the side part forming opposing tool 17 are used in the plate thickness direction. By pressing and holding, the claw magnetic pole portion 4 or the back surface portion 6 is deformed in the axial direction due to the friction generated between the claw magnetic pole and the claw magnetic pole portion forming tool 16 or between the back surface portion 6 and the back surface portion forming tool 14. It is possible to suppress.

また、切抜いた素材１３に爪磁極部４および背面部６を成形する工程において側面部成形対向工具１７を用いない場合では、爪磁極部４の成形および背面部６の成形を同一ストロークで行う必要があるが、側面部成形対向工具１７を用いた場合では、爪磁極部４の成形と背面部６の成形を別ストロークで成形することが可能となる。   Moreover, when the side part shaping | molding opposing tool 17 is not used in the process of shape | molding the nail | claw magnetic pole part 4 and the back surface part 6 to the cut-out raw material 13, it is necessary to perform the shaping | molding of the claw magnetic pole part 4 and the shaping | molding of the back surface part 6 by the same stroke. However, when the side surface forming counter tool 17 is used, the claw magnetic pole portion 4 and the back surface portion 6 can be formed with different strokes.

また、切抜いた素材１３に爪磁極部４および背面部６を成形する工程において、爪磁極部成形工具１６に素材１３を挟んで対向する爪磁極部成形対向工具１８により、素材１３板厚方向に荷重を負荷した状態で成形することで、爪時磁極成形部が曲げ曲げ戻し変形を受けるため、爪磁極部４成形後に生じる爪磁極成形部１９の半径方向中心向きの倒れを低減することが可能である。   Further, in the step of forming the claw magnetic pole portion 4 and the back surface portion 6 on the cut material 13, the claw magnetic pole portion forming opposed tool 18 that faces the claw magnetic pole portion forming tool 16 with the material 13 interposed therebetween is used in the material 13 plate thickness direction. By molding with the load applied, the claw magnetic pole forming part is subjected to bending and bending back deformation, so that it is possible to reduce the collapse of the claw magnetic pole forming part 19 toward the center in the radial direction that occurs after the claw magnetic pole part 4 is formed. It is.

また、切抜いた素材１３に爪磁極部４および背面部６を成形する工程において、背面部成形工具１４に素材１３を挟んで対向する背面部成形対向工具２０により、素材１３板厚方向に荷重を負荷した状態で成形することで、背面部６未成形部において面外への変形が拘束されるため、背面部６成形後に生じる背面部６成形部のしわを抑制することが可能あり、背面部６成形部が曲げ曲げ戻し変形を受けるため、背面部６成形後に生じる爪磁極成形部の半径方向外向きの倒れを低減することが可能である。   Further, in the step of forming the claw magnetic pole portion 4 and the back surface portion 6 in the cut material 13, a load is applied in the material 13 plate thickness direction by the back surface forming counter tool 20 facing the back surface forming tool 14 with the material 13 interposed therebetween. By molding in a loaded state, the deformation to the out-of-plane is restrained in the unmolded portion of the back surface 6, so that it is possible to suppress the wrinkles of the back surface 6 molded portion that occurs after the back surface 6 is molded. Since the 6 molded portion undergoes bending and bending back deformation, it is possible to reduce the outward collapse of the claw magnetic pole molded portion that occurs after the back surface portion 6 is molded.

素材１３を１枚の状態で爪磁極部４および背面部６を成形した場合、爪磁極部４と側面部５をつなぐ角１２の半径を小さくすることが可能である。ただし、各層において同じ寸法形状の素材１３を用いた場合、図１３の（ａ）に示すように各層にでは側面部６が異なるため、爪磁極部先端部２２および背面部先端部２３が揃わない。この時、機械加工などにより爪磁極部先端部２２および背面部先端部２３をそろえても良いが、各層での素材１３の寸法を成形後の寸法に合わせておくことで、図１３の（ｂ）に示すように爪磁極部先端部２２および背面部先端部２３をそろえることができ、機械加工などが省略可能となる。   When the claw magnetic pole portion 4 and the back surface portion 6 are formed with one material 13, the radius of the corner 12 connecting the claw magnetic pole portion 4 and the side surface portion 5 can be reduced. However, when the material 13 having the same size and shape is used in each layer, the side surface portion 6 is different in each layer as shown in FIG. 13A, and therefore the claw pole portion tip portion 22 and the back portion tip portion 23 are not aligned. . At this time, the claw pole tip 22 and the back tip 23 may be aligned by machining or the like, but by matching the dimensions of the material 13 in each layer with the dimensions after molding, as shown in FIG. ), The claw magnetic pole portion tip portion 22 and the back portion tip portion 23 can be aligned, and machining or the like can be omitted.

素材１３を積層した状態で爪磁極部４および背面部６を成形した場合、爪磁極部４および側面部５の成形工程数を低減させることが可能である。ただし、爪磁極部４と側面部５をつなぐ角１２の半径を、積層した板厚の合計した寸法より小さくすることができないため、例えば図１４に示すように、爪磁極部先端押込み工具２４にて、軸方向に押込むことで爪磁極部４と側面部５をつなぐ角１２の半径を小さくすることができる。   When the claw magnetic pole part 4 and the back surface part 6 are formed in a state where the material 13 is laminated, the number of forming steps of the claw magnetic pole part 4 and the side surface part 5 can be reduced. However, since the radius of the corner 12 connecting the claw magnetic pole portion 4 and the side surface portion 5 cannot be made smaller than the total dimension of the laminated plate thicknesses, for example, as shown in FIG. Thus, by pushing in the axial direction, the radius of the corner 12 connecting the claw magnetic pole portion 4 and the side surface portion 5 can be reduced.

成形した素材１３を積層する工程では、成形した素材１３の軸中心および成形した爪磁極部４の周方向位置を、背面部６の外周半径が板厚分大きい、爪磁極部４および背面部６を成形した素材１３に順次積層する。   In the step of laminating the molded material 13, the claw magnetic pole portion 4 and the back surface portion 6 are arranged such that the outer peripheral radius of the back surface portion 6 is larger by the thickness of the axial center of the molded material 13 and the circumferential position of the formed claw magnetic pole portion 4. Are sequentially laminated on the molded material 13.

素材１３同士を接合する工程では、例えば爪磁極部先端部２２または背面部先端部２３の少なくとも一方をレーザー溶接したり、接着剤を用いて、隣接する素材１３と順次接合したり、図１５に示すような素材１３板厚方向に半抜きされて形成された凸部２５と凹部２６を合わせる事で接合する。また、この接合工程は積層と同じ工程または積層工程より後工程で行う。   In the step of joining the materials 13 to each other, for example, at least one of the claw magnetic pole tip 22 or the back tip 23 is laser-welded, or sequentially joined to the adjacent material 13 using an adhesive, as shown in FIG. As shown, the material 13 is joined by combining the convex part 25 and the concave part 26 formed by being half-cut in the plate thickness direction. In addition, this joining step is performed in the same step as the lamination or in a later step than the lamination step.

また、前述の素材１３を１枚ずつ成形する方法と、素材１３を積層した状態で成形する方法を組み合わせた、次に示すような製造方法でもよい。鋼板から環状の素材１３を切抜き、切抜いた素材１３の爪磁極部４を成形し、成形した素材１３を積層し、積層した素材１３の背面部６を成形し、成形した素材１３を接合する工程からなる、または、鋼板から環状の素材１３を切抜き、切抜いた素材１３の背面部６を成形し、成形した素材１３を積層し、積層した素材１３の爪磁極部４を成形し、成形した素材１３を接合する工程からなる。あるいは、鋼板から環状の素材１３を切抜き、切抜いた素材１３を固定子鉄心２を構成する積層枚数未満の枚数を積層し、積層した素材１３に爪磁極部４および背面部６を成形し、成形した素材１３を積層し、積層した素材１３を接合する工程からなる。   Moreover, the manufacturing method as shown below which combined the method of shape | molding the above-mentioned raw material 13 piece by piece and the method of shape | molding in the state which laminated | stacked the raw material 13 may be sufficient. Cutting the annular material 13 from the steel plate, forming the claw magnetic pole portion 4 of the cut material 13, laminating the formed material 13, forming the back surface portion 6 of the laminated material 13, and joining the formed material 13 Or an annular material 13 cut out from a steel plate, a back surface portion 6 of the cut material 13 is formed, the formed material 13 is laminated, a claw magnetic pole portion 4 of the laminated material 13 is formed, and the formed material 13 of joining. Alternatively, the annular material 13 is cut out from the steel plate, the cut material 13 is laminated in a number less than the number of layers constituting the stator core 2, and the claw magnetic pole portion 4 and the back surface portion 6 are formed on the laminated material 13. The material 13 is laminated, and the laminated material 13 is joined.

上述した本発明の実施例１の製造方法の例では、成形後に爪磁極部が図２０の（ｃ）に示すように軸中心方向に倒れることがある。この場合、爪磁極部４を成形した後に、図２０の（ａ）に示すように円錐状の工具２８を軸方向（矢印方向）に押込むことによって、爪磁極部をオーバーベンドさせ、図２０の（ｄ）のように爪磁極部４の軸中心方向の倒れを制御できる。   In the example of the manufacturing method according to the first embodiment of the present invention described above, the claw magnetic pole portion may fall in the axial center direction as shown in FIG. In this case, after the claw magnetic pole portion 4 is formed, the claw magnetic pole portion is overbended by pushing the conical tool 28 in the axial direction (arrow direction) as shown in FIG. As shown in (d), the tilt of the claw magnetic pole portion 4 in the axial center direction can be controlled.

また、図２１の（ａ）に示すように、爪磁極部成形工具１６を軸方向および半径方向外向き（矢印方向）に移動させて図２１の（ｂ）の状態にすることによっても、図２１の（ｃ）のように爪磁極部４の軸中心方向の倒れを制御できる。   Further, as shown in FIG. 21A, the claw magnetic pole portion forming tool 16 is moved in the axial direction and radially outward (arrow direction) to be in the state of FIG. 21B. As shown in (c) of FIG. 21, the tilt of the claw magnetic pole portion 4 in the axial center direction can be controlled.

上述した本発明の実施例１の製造方法の１から５の例において、鋼板から切抜いた素材１３から背面部６を成形する際、成形により外周部の周長が短くなることに起因してしわが発生しやすくなる。そこで、例えば、図２２に示すような、素材１３の外周部に半径方向中心向きの切込み２９を入れることによってしわの発生の抑制が可能となる。   In the examples 1 to 5 of the manufacturing method of the first embodiment of the present invention described above, when the back surface portion 6 is formed from the material 13 cut out from the steel plate, the peripheral length of the outer peripheral portion is shortened by forming. I am prone to wrinkles. Therefore, for example, the generation of wrinkles can be suppressed by making a notch 29 toward the center in the radial direction in the outer peripheral portion of the material 13 as shown in FIG.

図２３に爪磁極部４の三角形状の凹凸９、矩形形状の凹凸１０、のこぎり歯の凹凸１１などの成形方法の例を示す。１つ目の例は、図２３の（ａ）（ｂ）に示すように爪磁極部４の外形を拘束する外形拘束工具３１に爪磁極部４を置き、三角形状の凹凸９、矩形形状の凹凸１０、のこぎり歯の凹凸１１などを成形する凹凸成形工具３０にて、凹凸成形工具３０の表面形状を転写させ爪磁極部４に三角形状の凹凸９、矩形形状の凹凸１０、のこぎり歯の凹凸１１などを成形する方法である。この時、転写させる凹凸成形工具３０の形状を変えることで、任意の凹凸形状が成形可能である。   FIG. 23 shows an example of a forming method of the claw magnetic pole portion 4 such as the triangular irregularities 9, the rectangular irregularities 10, and the sawtooth irregularities 11. In the first example, as shown in FIGS. 23 (a) and 23 (b), the claw magnetic pole portion 4 is placed on an outer shape restraining tool 31 that constrains the outer shape of the claw magnetic pole portion 4, and the triangular unevenness 9 and the rectangular shape are formed. The surface shape of the concavo-convex forming tool 30 is transferred by the concavo-convex forming tool 30 for forming the concavo-convex 10, the sawtooth concavo-convex 11, etc., and the triangular concavo-convex 9, the rectangular concavo-convex 10, and the sawtooth concavo-convex 11 or the like. At this time, an arbitrary uneven shape can be formed by changing the shape of the uneven forming tool 30 to be transferred.

２つ目の例は、図２３の（ｃ）に示すように、中央部が凸なローラ３２を爪磁極部４に押し付けることによって、ローラ３２の凸部形状を転写させることにより、爪磁極部４に三角形状の凹凸９、矩形形状の凹凸１０、のこぎり歯の凹凸１１などを成形する方法である。この時、転写させるローラ３２に凸部形状を変えることにより、任意の凹凸形状が成形可能である。   In the second example, as shown in FIG. 23C, the convex shape of the roller 32 is transferred by pressing the roller 32 having a convex central portion against the claw magnetic pole portion 4, thereby transferring the claw magnetic pole portion. 4 is a method of forming triangular irregularities 9, rectangular irregularities 10, sawtooth irregularities 11, and the like. At this time, an arbitrary uneven shape can be formed by changing the convex shape of the roller 32 to be transferred.

本発明の実施例２を図２４、２５、２６に基づいて説明する。図２４は固定子１相分の斜視図、図２５は固定子１相分の分解斜視図、図２６は固定子の１磁極の半分（ａ）、および１磁極分（ｂ）の斜視図である。   A second embodiment of the present invention will be described with reference to FIGS. 24 is a perspective view of one phase of the stator, FIG. 25 is an exploded perspective view of one phase of the stator, and FIG. 26 is a perspective view of one magnetic pole half (a) and one magnetic pole (b) of the stator. is there.

図２４に示す回転電機の固定子１は固定子鉄心２と固定子巻線３と保持板３３から構成される。また、固定子鉄心２は爪磁極部４、背面部６、側面部５から構成される素材を周方向に積層したものである。図２５および２６に示すように固定子鉄心２は１磁極あるいは、１磁極の半部を１つのセグメントとして周方向に配置し保持板３３にて各セグメントの位置決めおよび固定を行う。また、背面部６の軸方向端面７を合わせることで構成されるめ、固定子巻線３の巻装を容易にすることができる。   The stator 1 of the rotating electrical machine shown in FIG. 24 includes a stator core 2, a stator winding 3, and a holding plate 33. The stator core 2 is formed by laminating a material composed of a claw magnetic pole portion 4, a back surface portion 6, and a side surface portion 5 in the circumferential direction. As shown in FIGS. 25 and 26, the stator core 2 is arranged in the circumferential direction with one magnetic pole or half of one magnetic pole as one segment, and the holding plate 33 positions and fixes each segment. Moreover, since it comprises by match | combining the axial direction end surface 7 of the back surface part 6, the winding of the stator coil | winding 3 can be made easy.

図２７に本発明の実施例２の製造方法の第１の例を示す。鋼板から素材１３を切抜き、切抜いた素材を成形し、成形した素材１３を積層し、積層した素材１３同士を接合すし、接合した素材を組立てる工程からなる。図２８に本発明の実施例２の製造方法の第２の例を示す。鋼板から素材１３を切抜き、切抜いた素材１３を積層し、素材１３を積層させた状態で素材１３に爪磁極部４および背面部６を成形し、成形した素材１３同士を接合し、接合した素材を組立てる工程からなる。   FIG. 27 shows a first example of the manufacturing method according to the second embodiment of the present invention. The material 13 is cut from the steel plate, the cut material is formed, the formed material 13 is laminated, the laminated materials 13 are joined together, and the joined materials are assembled. FIG. 28 shows a second example of the manufacturing method according to the second embodiment of the present invention. The material 13 is cut out from the steel plate, the cut material 13 is laminated, the claw magnetic pole portion 4 and the back surface portion 6 are formed on the material 13 in a state where the material 13 is laminated, the formed materials 13 are joined together, and the joined material It consists of the process of assembling.

鋼板から環状の素材１３を切抜く工程では、例えばせん断加工、ワイヤーカット、レーザー切断、ウォータージェット、あるいは機械加工などによって所望の形状に切抜く。   In the step of cutting the annular material 13 from the steel plate, it is cut into a desired shape by, for example, shearing, wire cutting, laser cutting, water jet, or machining.

切抜いた素板を積層する工程では、素材１３の中心をそろえ、素材１３の板厚方向に積層する。   In the step of stacking the cut base plates, the centers of the materials 13 are aligned and the materials 13 are stacked in the thickness direction.

素材１３を成形する工程では、例えば、図２９の（ａ）に示すように、対向する１組のＺ字状に成形する曲げ工具３４と３５の、曲げ工具下３４の上に素材１３を置き、曲げ工具上３５を素材１３の板厚方向（矢印方向）に押込むことにより、図２９の（ｂ）のように素材１３が曲げ工具上３５と曲げ工具下３４の間に挟まれて、図２９の（ｃ）のように素材１３が成形される。   In the step of forming the material 13, for example, as shown in FIG. 29A, the material 13 is placed on the lower bending tool 34 of the bending tools 34 and 35 that are formed into a pair of opposing Z-shapes. By pushing the upper bending tool 35 in the thickness direction (arrow direction) of the material 13, the material 13 is sandwiched between the upper bending tool 35 and the lower bending tool 34 as shown in FIG. The material 13 is formed as shown in FIG.

成形した素材１３を積層する工程では、成形した素材１３の曲げ部と、側面部５をそろえて順次積層する。   In the step of laminating the molded material 13, the bent portion of the molded material 13 and the side surface portion 5 are aligned and sequentially laminated.

素材１３同士を接合する工程では、例えば爪磁極部先端部２２または背面部先端部２３の少なくとも一方をレーザー溶接したり、接着剤を用いて、隣接する素材１３と順次接合したり、図１５に示すような素材１３板厚方向に半抜きされて形成された凸部２５と凹部２６を合わせる事で接合する。また、この接合工程は積層と同じ工程または積層工程より後工程で行う。この接合工程では、１磁極あるいは１磁極の半分を１つのセグメントとして接合する。   In the step of joining the materials 13 to each other, for example, at least one of the claw magnetic pole tip 22 or the back tip 23 is laser-welded, or sequentially joined to the adjacent material 13 using an adhesive, as shown in FIG. As shown, the material 13 is joined by combining the convex part 25 and the concave part 26 formed by being half-cut in the plate thickness direction. In addition, this joining step is performed in the same step as the lamination or in a later step than the lamination step. In this joining step, one magnetic pole or half of one magnetic pole is joined as one segment.

接合した素材を組立てる工程では、保持板３３に設けた位置決めの機構により１磁極分あるいは１次極の半分を配置して固定する。この位置決めの機構は例えば側面部５を転写したような形状の凹みを作成し、１磁極分あるいは１次極の半分を圧入して固定する。あるいは、保持板３３の磁極配置部に凸形状を設け、側面部５に凸部を設け、位置決めを行う。   In the process of assembling the joined materials, one magnetic pole or half of the primary pole is arranged and fixed by a positioning mechanism provided on the holding plate 33. For example, this positioning mechanism creates a recess having a shape as if the side surface portion 5 was transferred, and presses and fixes one magnetic pole portion or half of the primary pole. Or a convex shape is provided in the magnetic pole arrangement part of the holding plate 33, and a convex part is provided in the side part 5, and positioning is performed.

図１は本発明の実施例１の固定子１相分の斜視図である。FIG. 1 is a perspective view of one phase of the stator according to the first embodiment of the present invention. 図２は本発明の実施例１の固定子１相分の分解斜視図である。FIG. 2 is an exploded perspective view of one phase of the stator according to the first embodiment of the present invention. 図３は本発明の実施例１の爪磁極部の斜視図および横断面図である。FIG. 3 is a perspective view and a cross-sectional view of the claw magnetic pole portion of the first embodiment of the present invention. 図４は本発明の実施例１の固定子鉄心の横断面図である。FIG. 4 is a cross-sectional view of the stator core according to the first embodiment of the present invention. 図５は本発明の実施例１の製造方法の第１の例である。FIG. 5 shows a first example of the manufacturing method according to the first embodiment of the present invention. 図６は本発明の実施例１の製造方法の第２の例である。FIG. 6 shows a second example of the manufacturing method according to the first embodiment of the present invention. 図７は本発明の実施例１の成形方法について説明した図である。FIG. 7 is a view for explaining the molding method of Example 1 of the present invention. 図８は本発明の実施例１の成形方法について説明した図である。FIG. 8 is a diagram for explaining the molding method of Example 1 of the present invention. 図９は本発明の実施例１の成形方法について説明した図である。FIG. 9 is a view for explaining the molding method of Example 1 of the present invention. 図１０は本発明の実施例１の成形方法について説明した図である。FIG. 10 is a diagram for explaining the molding method of Example 1 of the present invention. 図１１は本発明の実施例１の成形方法について説明した図である。FIG. 11 is a diagram for explaining the molding method of Example 1 of the present invention. 図１２は本発明の実施例１の成形方法について説明した図である。FIG. 12 is a diagram for explaining the molding method of Example 1 of the present invention. 図１３は本発明の実施例１の成形方法について説明した図である。FIG. 13 is a view for explaining the molding method of Example 1 of the present invention. 図１４は本発明の実施例１の成形方法について説明した図である。FIG. 14 is a view for explaining the molding method of Example 1 of the present invention. 図１５は本発明の実施例１の成形方法について説明した図である。FIG. 15 is a view for explaining the molding method of Example 1 of the present invention. 図１６は本発明の実施例１の製造方法の第３の例である。FIG. 16 shows a third example of the manufacturing method according to the first embodiment of the present invention. 図１７は本発明の実施例１の製造方法の第４の例である。FIG. 17 shows a fourth example of the manufacturing method according to the first embodiment of the present invention. 図１８は本発明の実施例１の製造方法の第５の例である。FIG. 18 shows a fifth example of the manufacturing method according to the first embodiment of the present invention. 図１９は本発明の実施例１の製造方法の第６の例である。FIG. 19 shows a sixth example of the manufacturing method according to the first embodiment of the present invention. 図２０は本発明の実施例１の成形方法について説明した図である。FIG. 20 is a view for explaining the molding method of Example 1 of the present invention. 図２１は本発明の実施例１の成形方法について説明した図である。FIG. 21 is a view for explaining the molding method of Example 1 of the present invention. 図２２は本発明の実施例１の成形方法について説明した図である。FIG. 22 is a view for explaining the molding method of Example 1 of the present invention. 図２３は本発明の実施例１の成形方法について説明した図である。FIG. 23 is a diagram for explaining the molding method of Example 1 of the present invention. 図２４は本発明の実施例２の固定子１相分の斜視図である。FIG. 24 is a perspective view of one phase of the stator according to the second embodiment of the present invention. 図２５は本発明の実施例２の固定子１相分の分解斜視図である。FIG. 25 is an exploded perspective view of one phase of the stator according to the second embodiment of the present invention. 図２６は本発明の実施例２の固定子１磁極分の斜視図である。FIG. 26 is a perspective view of one magnetic pole of the stator according to the second embodiment of the present invention. 図２７は本発明の実施例２の製造方法の第１の例である。FIG. 27 is a first example of a manufacturing method according to the second embodiment of the present invention. 図２８は本発明の実施例２の製造方法の第２の例であるFIG. 28 shows a second example of the manufacturing method according to the second embodiment of the present invention. 図２９は本発明の実施例２の成形方法について説明した図である。FIG. 29 is a view for explaining the molding method of Example 2 of the present invention. 図３０は回転電機の構造を説明する図である。FIG. 30 is a diagram illustrating the structure of the rotating electrical machine.

符号の説明Explanation of symbols

１ 固定子
２ 固定子鉄心
３ 固定子巻線
４ 爪磁極部
５ 側面部
６ 背面部
７ 軸方向端面
８ スリット
９ 円形状の凹凸
１０ 矩形形状の凹凸
１１ のこぎり歯の凹凸
１２ 角
１３ 素材
１４ 背面部成形工具
１５ 側面部成形工具
１６ 爪磁極部成形工具
１７ 側面部成形対向工具
１８ 爪磁極部成形対向工具
１９ 爪磁極成形部
２０ 背面部成形対向工具
２１ 背面部未成形部
２２ 爪磁極部先端部
２３ 背面部先端部
２４ 爪磁極部先端押込み工具
２５ 凸部
２６ 凹部
２８ 円錐状の工具
２９ 切込み
３０ 凹凸成形工具
３１ 外形拘束工具
３２ ローラ
３３ 保持板 DESCRIPTION OF SYMBOLS 1 Stator 2 Stator iron core 3 Stator winding 4 Claw pole part 5 Side face part 6 Back face part 7 Axial end face 8 Slit 9 Circular unevenness 10 Rectangular unevenness 11 Irregularity of sawtooth 12 Angle 13 Material 14 Back surface part Forming tool 15 Side face forming tool 16 Claw magnetic pole part forming tool 17 Side face forming counter tool 18 Claw magnetic pole part forming counter tool 19 Claw magnetic pole forming part 20 Back part forming counter tool 21 Back part unformed part 22 Claw magnetic pole part tip part 23 Rear end portion 24 Claw pole portion end pushing tool 25 Convex portion 26 Recessed portion 28 Conical tool 29 Cutting
30 Concavity / convex forming tool 31 Constraining tool 32 Roller 33 Holding plate

Claims (23)

回転自在に設けられた回転子と、該回転子の外周と対向する部位に設けられた固定子とを有する回転電機において、前記固定子は前記回転子の外側に環状に巻装された固定子巻線と、前記回転子と対向する部位に軸方向両側からそれぞれが交互に延びる固定子爪磁極を有した固定子鉄心とで構成され、前記固定子鉄心が鋼板を積層することで構成されていることを特徴とする回転電機。   In a rotating electrical machine having a rotor provided rotatably and a stator provided at a portion facing the outer periphery of the rotor, the stator is annularly wound around the rotor. It is composed of a winding and a stator core having stator claw magnetic poles that alternately extend from both sides in the axial direction at a portion facing the rotor, and the stator core is configured by laminating steel plates. A rotating electric machine characterized by 請求項１記載の回転電機であって、前記固定子鉄心の前記固定子爪磁極と、前記固定子爪磁極と前記固定子巻線を挟んで向かい合う固定子鉄心背面部は回転子の回転軸を中心とする半径方向に鋼板を積層し、かつ、前記固定子爪磁極と前記固定子背面部とをつなぐ固定子側面部は軸方向に鋼板を積層することで構成されていることを特徴とする回転電機。   2. The rotating electrical machine according to claim 1, wherein the stator claw magnetic pole of the stator iron core, and the stator iron core rear surface facing the stator claw magnetic pole and the stator winding sandwich the rotation axis of the rotor. A steel plate is laminated in a radial direction around the center, and a stator side surface portion connecting the stator claw magnetic pole and the stator back portion is configured by laminating steel plates in an axial direction. Rotating electric machine. 請求項１記載の回転電機であって、前記固定子鉄心が周方向に鋼板を積層することで構成されていることを特徴とする回転電機。   The rotating electrical machine according to claim 1, wherein the stator core is configured by laminating steel plates in a circumferential direction. 請求項１に記載の回転電機であって、前記固定子鉄心を構成する鋼板の少なくとも１枚が電磁鋼板もしくは磁気抵抗の少ない鋼板であることを特徴とする回転電機。   2. The rotating electrical machine according to claim 1, wherein at least one of the steel plates constituting the stator core is an electromagnetic steel plate or a steel plate having a low magnetic resistance. 請求項１に記載の回転電機であって、厚さの異なる鋼板を組合せて構成することを特徴とする回転電機。   The rotating electrical machine according to claim 1, wherein the rotating electrical machine is configured by combining steel plates having different thicknesses. 請求項２記載の回転電機であって、前記固定子鉄心の前記固定子爪磁極と前記固定子背面部と前記固定子側面部とが一体である鋼板を積層することで構成されていることを特徴とする回転電機。   It is a rotary electric machine of Claim 2, Comprising: It is comprised by laminating | stacking the steel plate with which the said stator claw magnetic pole of the said stator core, the said stator back part, and the said stator side part are integral. A rotating electric machine that is characterized. 請求項２に記載の回転電機であって、前記固定子爪磁極の前記回転子と対向する前記回転子との対向面を構成する鋼板にスリットまたは凹凸形状を少なくとも１本以上構成することを特徴とする回転電機。   It is a rotary electric machine of Claim 2, Comprising: At least 1 slit or uneven | corrugated shape is comprised in the steel plate which comprises the opposing surface with the said rotor which opposes the said rotor of the said stator nail | claw magnetic pole. Rotating electric machine. 請求項３に記載の回転電機であって、前記爪磁極と前期固定子背面部と前期固定子側面部からなる１磁極分あるいは１磁極の半分を１組としたセグメントと、前期固定子鉄心の周方向の位置決める保持板から構成されることを特徴とする回転電機。   4. The rotating electrical machine according to claim 3, wherein a segment of one magnetic pole portion or one half of one magnetic pole composed of the claw magnetic pole, the first stator back portion and the first stator side portion, and a first stator core A rotating electric machine comprising a holding plate for positioning in a circumferential direction. 回転自在に設けられた回転子と、該回転子の外周と対向する部位に設けられた固定子とを有し、前記固定子は前記回転子の外側に環状に巻装された固定子巻線と、前記回転子と対向する部位に軸方向両側からそれぞれが交互に延びる固定子爪磁極を有した固定子鉄心とで構成され、前記固定子鉄心が鋼板を積層することで構成され、前記固定子鉄心の前記固定子爪磁極と、前記固定子爪磁極と前記固定子巻線を挟んで向かい合う固定子鉄心背面部は回転子の回転軸を中心とする半径方向に鋼板を積層し、かつ、前記固定子爪磁極と前記固定子背面部とをつなぐ固定子側面部は軸方向に鋼板を積層することで構成されている回転電機の製造方法において、
鋼板から環状の素材を切抜く第１工程と、前記素材に前記固定子爪磁極部と前記固定子背面部とを成形する第２工程と、前記成形した素材を積層する第３工程と、前記積層した素材を接合する第４工程とを備えることを特徴とする回転電機の製造方法。 A stator winding having a rotor provided rotatably and a stator provided at a portion facing the outer periphery of the rotor, wherein the stator is annularly wound around the outer side of the rotor And a stator core having stator claw magnetic poles alternately extending from both sides in the axial direction at a portion facing the rotor, and the stator core is configured by laminating steel plates, and the fixed The stator claw magnetic pole of the core, and the stator core back surface facing the stator claw magnetic pole and the stator winding are laminated with steel plates in the radial direction about the rotation axis of the rotor; and In the method of manufacturing a rotating electrical machine, the stator side surface portion connecting the stator claw magnetic pole and the stator back surface portion is formed by laminating steel plates in the axial direction.
A first step of cutting an annular material from a steel plate, a second step of forming the stator claw magnetic pole portion and the stator back portion on the material, a third step of laminating the formed material, And a fourth step of joining the laminated materials. A method of manufacturing a rotating electrical machine. 回転自在に設けられた回転子と、該回転子の外周と対向する部位に設けられた固定子とを有し、前記固定子は前記回転子の外側に環状に巻装された固定子巻線と、前記回転子と対向する部位に軸方向両側からそれぞれが交互に延びる固定子爪磁極を有した固定子鉄心とで構成され、前記固定子鉄心が鋼板を積層することで構成され、前記固定子鉄心の前記固定子爪磁極と、前記固定子爪磁極と前記固定子巻線を挟んで向かい合う固定子鉄心背面部は回転子の回転軸を中心とする半径方向に鋼板を積層し、かつ、前記固定子爪磁極と前記固定子背面部とをつなぐ固定子側面部は軸方向に鋼板を積層することで構成されている回転電機の製造方法において、
鋼板から環状の素材を切抜く第１工程と、前記素材を積層する第２工程と、前記積層した素材に前記固定子爪磁極部と前記固定子背面部とを成形する第３工程と、前記成形した素材を接合する第４工程とを備えることを特徴とする回転電機の製造方法。 A stator winding having a rotor provided rotatably and a stator provided at a portion facing the outer periphery of the rotor, wherein the stator is annularly wound around the outer side of the rotor And a stator core having stator claw magnetic poles alternately extending from both sides in the axial direction at a portion facing the rotor, and the stator core is configured by laminating steel plates, and the fixed The stator claw magnetic pole of the core, and the stator core back surface facing the stator claw magnetic pole and the stator winding are laminated with steel plates in the radial direction about the rotation axis of the rotor; and In the method of manufacturing a rotating electrical machine, the stator side surface portion connecting the stator claw magnetic pole and the stator back surface portion is formed by laminating steel plates in the axial direction.
A first step of cutting an annular material from a steel plate, a second step of laminating the material, a third step of forming the stator claw magnetic pole portion and the stator back portion on the laminated material, And a fourth step of joining the formed material. A method of manufacturing a rotating electrical machine. 回転自在に設けられた回転子と、該回転子の外周と対向する部位に設けられた固定子とを有し、前記固定子は前記回転子の外側に環状に巻装された固定子巻線と、前記回転子と対向する部位に軸方向両側からそれぞれが交互に延びる固定子爪磁極を有した固定子鉄心とで構成され、前記固定子鉄心が鋼板を積層することで構成され、前記固定子鉄心の前記固定子爪磁極と、前記固定子爪磁極と前記固定子巻線を挟んで向かい合う固定子鉄心背面部は回転子の回転軸を中心とする半径方向に鋼板を積層し、かつ、前記固定子爪磁極と前記固定子背面部とをつなぐ固定子側面部は軸方向に鋼板を積層することで構成されている回転電機の製造方法において、
鋼板から１磁極または複数磁極分の素材を切抜く第１工程と、前記素材に前記固定子爪磁極部と前記固定子背面部とを成形する第２工程と、前記成形した素材を積層する第３工程と、前記積層された素材を接合する第４工程と、前記接合した素材を周方向に組立てる第５工程とを備えることを特徴とする回転電機の製造方法。 A stator winding having a rotor provided rotatably and a stator provided at a portion facing the outer periphery of the rotor, wherein the stator is annularly wound around the outer side of the rotor And a stator core having stator claw magnetic poles alternately extending from both sides in the axial direction at a portion facing the rotor, and the stator core is configured by laminating steel plates, and the fixed The stator claw magnetic pole of the core, and the stator core back surface facing the stator claw magnetic pole and the stator winding are laminated with steel plates in the radial direction about the rotation axis of the rotor; and In the method of manufacturing a rotating electrical machine, the stator side surface portion connecting the stator claw magnetic pole and the stator back surface portion is formed by laminating steel plates in the axial direction.
A first step of cutting out a material for one magnetic pole or a plurality of magnetic poles from a steel plate, a second step of forming the stator claw magnetic pole portion and the stator back portion on the material, and a step of laminating the formed material 3. A method of manufacturing a rotating electrical machine, comprising: a third step, a fourth step of bonding the stacked materials, and a fifth step of assembling the bonded materials in a circumferential direction. 回転自在に設けられた回転子と、該回転子の外周と対向する部位に設けられた固定子とを有し、前記固定子は前記回転子の外側に環状に巻装された固定子巻線と、前記回転子と対向する部位に軸方向両側からそれぞれが交互に延びる固定子爪磁極を有した固定子鉄心とで構成され、前記固定子鉄心が鋼板を積層することで構成され、前記固定子鉄心の前記固定子爪磁極と、前記固定子爪磁極と前記固定子巻線を挟んで向かい合う固定子鉄心背面部は回転子の回転軸を中心とする半径方向に鋼板を積層し、かつ、前記固定子爪磁極と前記固定子背面部とをつなぐ固定子側面部は軸方向に鋼板を積層することで構成されている回転電機の製造方法において、
鋼板から１磁極または複数磁極分の素材を切抜く第１工程と、前記素材を積層する第２工程と、前記積層した素材に前記固定子爪磁極部と前記固定子背面部とを成形する第３工程と、前記成形した素材を接合する第４工程と、前記接合した素材を周方向に組立てる第５工程とを備えることを特徴とする回転電機の製造方法。 A stator winding having a rotor provided rotatably and a stator provided at a portion facing the outer periphery of the rotor, wherein the stator is annularly wound around the outer side of the rotor And a stator core having stator claw magnetic poles alternately extending from both sides in the axial direction at a portion facing the rotor, and the stator core is configured by laminating steel plates, and the fixed The stator claw magnetic pole of the core, and the stator core back surface facing the stator claw magnetic pole and the stator winding are laminated with steel plates in the radial direction about the rotation axis of the rotor; and In the method of manufacturing a rotating electrical machine, the stator side surface portion connecting the stator claw magnetic pole and the stator back surface portion is formed by laminating steel plates in the axial direction.
A first step of cutting out a material for one magnetic pole or a plurality of magnetic poles from a steel plate, a second step of laminating the material, and a step of forming the stator claw magnetic pole portion and the stator back portion on the laminated material. 3. A method of manufacturing a rotating electrical machine, comprising: a third step, a fourth step of joining the molded materials, and a fifth step of assembling the joined materials in the circumferential direction. 回転自在に設けられた回転子と、該回転子の外周と対向する部位に設けられた固定子とを有し、前記固定子は前記回転子の外側に環状に巻装された固定子巻線と、前記回転子と対向する部位に軸方向両側からそれぞれが交互に延びる固定子爪磁極を有した固定子鉄心とで構成され、前記固定子鉄心が鋼板を積層することで構成され、前記固定子鉄心の前記固定子爪磁極と、前記固定子爪磁極と前記固定子巻線を挟んで向かい合う固定子鉄心背面部は回転子の回転軸を中心とする半径方向に鋼板を積層し、かつ、前記固定子爪磁極と前記固定子背面部とをつなぐ固定子側面部は軸方向に鋼板を積層することで構成されている回転電機の製造方法において、
帯状に連続した鋼板から素材を切抜く第１工程と、前記素材に前記固定子爪磁極部と前記固定子背面部とを成形する第２工程と、前記成形した素材をらせん状に積層する第３工程と、前記積層した素材を接合する第４工程とを備えることを特徴とする回転電機の製造方法。 A stator winding having a rotor provided rotatably and a stator provided at a portion facing the outer periphery of the rotor, wherein the stator is annularly wound around the outer side of the rotor And a stator core having stator claw magnetic poles alternately extending from both sides in the axial direction at a portion facing the rotor, and the stator core is configured by laminating steel plates, and the fixed The stator claw magnetic pole of the core, and the stator core back surface facing the stator claw magnetic pole and the stator winding are laminated with steel plates in the radial direction about the rotation axis of the rotor; and In the method of manufacturing a rotating electrical machine, the stator side surface portion connecting the stator claw magnetic pole and the stator back surface portion is formed by laminating steel plates in the axial direction.
A first step of cutting a material from a strip-shaped steel plate; a second step of forming the stator claw magnetic pole portion and the stator back portion on the material; and a step of laminating the formed material in a spiral shape. The manufacturing method of the rotary electric machine characterized by including 3 processes and the 4th process of joining the said laminated | stacked raw material. 請求項９から請求項１３のいずれかに記載の回転電機の製造方法であって、前記固定子爪磁極を成形する固定子爪磁極成形工具の前記固定子爪磁極部を成形する部分が軸に垂直な横断面が円弧形状であり、前記固定子背面部を成形する固定子背面部成形工具の前記固定子背面部を成形する部分が軸に垂直な横断面が円弧形状であり、前記固定子爪磁極成形型および前記固定子背面部成形型と前記素材を挟んだ位置に配置し前記固定子爪磁極成形工具より大きく前記固定子背面部成形工具より小さい前記固定子側面部を成形する固定子側面部成形工具を固定子爪磁極成形型および固定子背面部成形型に対して相対的に前記回転子の軸方向に押込むことを特徴とする回転電機の製造方法。   The method of manufacturing a rotating electrical machine according to any one of claims 9 to 13, wherein a portion of the stator claw magnetic pole forming tool that forms the stator claw magnetic pole is formed with a portion that forms the stator claw magnetic pole portion as a shaft. A vertical cross section is an arc shape, and a portion for forming the stator back portion of the stator back portion forming tool for forming the stator back portion is an arc shape in a cross section perpendicular to the axis. A stator that is disposed at a position sandwiching the material between the claw magnetic pole forming die and the stator back surface forming die and that forms the stator side surface portion that is larger than the stator claw magnetic pole forming tool and smaller than the stator back surface forming tool. A method of manufacturing a rotating electrical machine, wherein a side surface forming tool is pushed relative to a stator claw magnetic pole forming die and a stator back surface forming die in the axial direction of the rotor. 請求項１４に記載の回転電機の製造方法であって、前記固定子爪磁極成形工具を前記回転子の軸方向および半径方向外向きに押込むことを特徴する回転電機の製造方法。   15. The method of manufacturing a rotating electrical machine according to claim 14, wherein the stator claw pole forming tool is pushed in an axial direction and a radially outward direction of the rotor. 請求項９から請求項１３のいずれかに記載の回転電機の製造方法において、
各層の前記固定子爪磁極の高さまたは前記固定子背面部の高さの少なくとも一方が前記回転子の半径方向に揃う形状の素材を使用することを特徴とする回転電機の製造方法。 In the manufacturing method of the rotary electric machine according to any one of claims 9 to 13,
A method of manufacturing a rotating electrical machine, wherein a material having a shape in which at least one of a height of the stator claw magnetic poles of each layer or a height of the back surface of the stator is aligned in a radial direction of the rotor is used. 請求項１０、１２あるいは１３のいずれかに記載の回転電機の製造方法において、前記固定子爪磁極先端部を前記回転子の軸方向に押込み、前記固定子爪磁極と前記固定子側面部の交わる角部半径を小さくする工程を備えることを特徴とする回転電機の製造方法。   14. The method of manufacturing a rotating electrical machine according to claim 10, wherein the stator claw magnetic pole tip is pushed in an axial direction of the rotor, and the stator claw magnetic pole and the stator side surface intersect. The manufacturing method of the rotary electric machine characterized by including the process of making a corner | angular part radius small. 回転自在に設けられた回転子と、該回転子の外周と対向する部位に設けられた固定子とを有し、前記固定子は前記回転子の外側に環状に巻装された固定子巻線と、前記回転子と対向する部位に軸方向両側からそれぞれが交互に延びる固定子爪磁極を有した固定子鉄心とで構成され、前記固定子鉄心が鋼板を積層することで構成され、前記固定子鉄心の前記固定子爪磁極と、前記固定子爪磁極と前記固定子巻線を挟んで向かい合う固定子鉄心背面部は回転子の回転軸を中心とする半径方向に鋼板を積層し、かつ、前記固定子爪磁極と前記固定子背面部とをつなぐ固定子側面部は軸方向に鋼板を積層することで構成されている回転電機の製造方法において、
外周部に前記回転子の半径方向中心向きに切込みが入っている前記素材を使用することを特徴とする回転電機の製造方法。 A stator winding having a rotor provided rotatably and a stator provided at a portion facing the outer periphery of the rotor, wherein the stator is annularly wound around the outer side of the rotor And a stator core having stator claw magnetic poles alternately extending from both sides in the axial direction at a portion facing the rotor, and the stator core is configured by laminating steel plates, and the fixed The stator claw magnetic pole of the core, and the stator core back surface facing the stator claw magnetic pole and the stator winding are laminated with steel plates in the radial direction about the rotation axis of the rotor; and In the method of manufacturing a rotating electrical machine, the stator side surface portion connecting the stator claw magnetic pole and the stator back surface portion is formed by laminating steel plates in the axial direction.
A method of manufacturing a rotating electrical machine, characterized in that the material having a cut in the outer peripheral portion toward the center in the radial direction of the rotor is used. 回転自在に設けられた回転子と、該回転子の外周と対向する部位に設けられた固定子とを有し、前記固定子は前記回転子の外側に環状に巻装された固定子巻線と、前記回転子と対向する部位に軸方向両側からそれぞれが交互に延びる固定子爪磁極を有した固定子鉄心とで構成され、前記固定子鉄心が鋼板を積層することで構成され、前記固定子鉄心の前記固定子爪磁極と、前記固定子爪磁極と前記固定子巻線を挟んで向かい合う固定子鉄心背面部は回転子の回転軸を中心とする半径方向に鋼板を積層し、かつ、前記固定子爪磁極と前記固定子背面部とをつなぐ固定子側面部は軸方向に鋼板を積層することで構成され、前記固定子鉄心の前記固定子爪磁極と前記固定子背面部と前記固定子側面部とが一体である鋼板を積層することで構成され、前記固定子鉄心が周方向に鋼板を積層することで構成されている回転電機の製造方法において、
鋼板から素材を切抜く第１工程と、前記素材を成形する第２工程と、前記成形した素材を積層する第３工程と、前記積層した素材を接合する第４工程と、前記素材を組立てる第５工程とを備えることを特徴とする回転電機の製造方法。 A stator winding having a rotor provided rotatably and a stator provided at a portion facing the outer periphery of the rotor, wherein the stator is annularly wound around the outer side of the rotor And a stator core having stator claw magnetic poles alternately extending from both sides in the axial direction at a portion facing the rotor, and the stator core is configured by laminating steel plates, and the fixed The stator claw magnetic pole of the core, and the stator core back surface facing the stator claw magnetic pole and the stator winding are laminated with steel plates in the radial direction about the rotation axis of the rotor; and A stator side surface portion connecting the stator claw magnetic pole and the stator back surface portion is formed by laminating steel plates in the axial direction, and the stator claw magnetic pole of the stator core, the stator back surface portion, and the fixing It is composed by laminating steel plates that are integral with the child side surface, The method of manufacturing a rotary electric machine that is configured by serial stator core are stacked steel plates in the circumferential direction,
A first step of cutting out the material from the steel plate, a second step of forming the material, a third step of stacking the formed material, a fourth step of joining the stacked material, and assembling the material A method of manufacturing a rotating electrical machine, comprising: 5 steps. 回転自在に設けられた回転子と、該回転子の外周と対向する部位に設けられた固定子とを有し、前記固定子は前記回転子の外側に環状に巻装された固定子巻線と、前記回転子と対向する部位に軸方向両側からそれぞれが交互に延びる固定子爪磁極を有した固定子鉄心とで構成され、前記固定子鉄心が鋼板を積層することで構成され、前記固定子鉄心の前記固定子爪磁極と、前記固定子爪磁極と前記固定子巻線を挟んで向かい合う固定子鉄心背面部は回転子の回転軸を中心とする半径方向に鋼板を積層し、かつ、前記固定子爪磁極と前記固定子背面部とをつなぐ固定子側面部は軸方向に鋼板を積層することで構成され、前記固定子鉄心の前記固定子爪磁極と前記固定子背面部と前記固定子側面部とが一体である鋼板を積層することで構成され、前記固定子鉄心が周方向に鋼板を積層することで構成されている回転電機の製造方法において、
鋼板から素材を切抜く第１工程と、前記素材を積層する第２工程と、前記積層した素材を成形する第３工程と、前記成形した素材を接合する第４工程と、前記素材を組立てる第５工程とを備えることを特徴とする回転電機の製造方法。 A stator winding having a rotor provided rotatably and a stator provided at a portion facing the outer periphery of the rotor, wherein the stator is annularly wound around the outer side of the rotor And a stator core having stator claw magnetic poles alternately extending from both sides in the axial direction at a portion facing the rotor, and the stator core is configured by laminating steel plates, and the fixed The stator claw magnetic pole of the core, and the stator core back surface facing the stator claw magnetic pole and the stator winding are laminated with steel plates in the radial direction about the rotation axis of the rotor; and A stator side surface portion connecting the stator claw magnetic pole and the stator back surface portion is formed by laminating steel plates in the axial direction, and the stator claw magnetic pole of the stator core, the stator back surface portion, and the fixing It is composed by laminating steel plates that are integral with the child side surface, The method of manufacturing a rotary electric machine that is configured by serial stator core are stacked steel plates in the circumferential direction,
A first step of cutting out a material from a steel plate, a second step of laminating the material, a third step of forming the laminated material, a fourth step of joining the formed material, and assembling the material A method of manufacturing a rotating electrical machine, comprising: 5 steps. 回転自在に設けられた回転子と、該回転子の外周と対向する部位に設けられた固定子とを有し、前記固定子は前記回転子の外側に環状に巻装された固定子巻線と、前記回転子と対向する部位に軸方向両側からそれぞれが交互に延びる固定子爪磁極を有した固定子鉄心とで構成され、前記固定子鉄心が鋼板を積層することで構成され、前記固定子鉄心の前記固定子爪磁極と、前記固定子爪磁極と前記固定子巻線を挟んで向かい合う固定子鉄心背面部は回転子の回転軸を中心とする半径方向に鋼板を積層し、かつ、前記固定子爪磁極と前記固定子背面部とをつなぐ固定子側面部は軸方向に鋼板を積層することで構成され、前記固定子鉄心の前記固定子爪磁極と前記固定子背面部と前記固定子側面部とが一体である鋼板を積層することで構成され、前記固定子鉄心が周方向に鋼板を積層することで構成されている回転電機の製造方法において、
鋼板から素材を切抜く第１工程と、前記素材を積層する第２工程と、前記積層した素材を接合する第３工程と、前記接合した素材を成形する第４工程と、前記素材を組立てる第５工程とを備えることを特徴とする回転電機の製造方法。 A stator winding having a rotor provided rotatably and a stator provided at a portion facing the outer periphery of the rotor, wherein the stator is annularly wound around the outer side of the rotor And a stator core having stator claw magnetic poles alternately extending from both sides in the axial direction at a portion facing the rotor, and the stator core is configured by laminating steel plates, and the fixed The stator claw magnetic pole of the core, and the stator core back surface facing the stator claw magnetic pole and the stator winding are laminated with steel plates in the radial direction about the rotation axis of the rotor; and A stator side surface portion connecting the stator claw magnetic pole and the stator back surface portion is formed by laminating steel plates in the axial direction, and the stator claw magnetic pole of the stator core, the stator back surface portion, and the fixing It is composed by laminating steel plates that are integral with the child side surface, The method of manufacturing a rotary electric machine that is configured by serial stator core are stacked steel plates in the circumferential direction,
A first step of cutting a material from a steel plate, a second step of laminating the material, a third step of joining the laminated material, a fourth step of forming the joined material, and assembling the material A method of manufacturing a rotating electrical machine, comprising: 5 steps. 請求項１９から請求項２１のいずれかに記載の回転電機の製造方法において、
前記素材を固定子爪磁極部側から固定子背面部側に向けて、前記素材の面外方向に山谷あるいは谷山とＺ状に曲げることを特徴とする回転電機の製造方法。 In the manufacturing method of the rotary electric machine according to any one of claims 19 to 21,
A method of manufacturing a rotating electrical machine, wherein the material is bent from a stator claw magnetic pole portion side toward a stator back portion side in a Z-valley or a valley-mountain and Z shape in an out-of-plane direction of the material. 請求項９から請求項１３のいずれか、または、請求項１９から請求項２１のいずれかに記載の回転電機の製造方法において、前記素材を板厚方向に半抜きして形成された凸部と凹部を合わせるかしめ、あるいは、レーザー溶接、あるいは接着により接合することを特徴とする回転電機の製造方法。   In the manufacturing method of the rotating electrical machine according to any one of claims 9 to 13 or any one of claims 19 to 21, a convex portion formed by half-cutting the material in a plate thickness direction. A method of manufacturing a rotating electrical machine, characterized by joining the concave portions by caulking, laser welding, or adhesion.
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