JP3903784B2 - Stator manufacturing method for rotating electrical machine - Google Patents

Stator manufacturing method for rotating electrical machine Download PDF

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Publication number
JP3903784B2
JP3903784B2 JP2001389131A JP2001389131A JP3903784B2 JP 3903784 B2 JP3903784 B2 JP 3903784B2 JP 2001389131 A JP2001389131 A JP 2001389131A JP 2001389131 A JP2001389131 A JP 2001389131A JP 3903784 B2 JP3903784 B2 JP 3903784B2
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JP
Japan
Prior art keywords
core material
laminated body
shaped core
thin
stator
Prior art date
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Expired - Fee Related
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JP2001389131A
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Japanese (ja)
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JP2003189558A (en
Inventor
久孝 加藤
修 西尾
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Panasonic Holdings Corp
Original Assignee
Panasonic Corp
Matsushita Electric Industrial Co Ltd
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Priority to JP2001389131A priority Critical patent/JP3903784B2/en
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  • Iron Core Of Rotating Electric Machines (AREA)
  • Windings For Motors And Generators (AREA)
  • Manufacture Of Motors, Generators (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、回転電機の固定子の製造方法に関するものである。
【０００２】
【従来の技術】
近年の回転電機は高効率・低コスト化の取り組みがなされている。以下に従来の回転電機の固定子について図７および図８に基づき説明する。図８は図７の要部拡大図である。
【０００３】
図７および図８において、所定間隔でティース１が形成され、隣接するティース１の間に先すぼまりの切り欠き２と前記切り欠き２の奥端に連接された拡開３により形成された薄肉部４を有する帯状コア素材５をプレスで打ち抜き、この帯状コア素材５を積層し、帯状コア素材の積層体７に巻線を絶縁するための絶縁体を介して巻線した後、積層体７を湾曲させて環状にステータコア８を成形することにより、回転電機の固定子を製造していた。
【０００４】
【発明が解決しようとする課題】
しかしながら上記従来の製造方法によれば、帯状コア素材の積層体を湾曲させて環状にする際、ティース間を渡る渡り線が薄肉部の上を通らず内径側を通るため緩みが発生し、コイルバラケや絶縁耐圧不良などの品質問題の原因となっていた。
【０００５】
本発明は上記従来の問題点を解決するためのもので、固定子の構造および製造方法を工夫することにより、渡り線の緩みを抑え、信頼性の高い回転電機の固定子を提供することを目的とする。
【０００６】
【課題を解決するための手段】
この目的を達成するために本発明の回転電機の固定子は、一側に所定間隔でティースが形成され、隣接するティースの間に前記一側から他側に向けて先すぼまりの切り欠きと前記切り欠きの奥端に連接された拡開により形成された薄肉部を有する帯状コア素材をプレスで打ち抜き、この帯状コア素材を積層し、前記積層した帯状コア素材の積層体の前記薄肉部を前記一側方向に屈曲させ、前記ティースの間隔を狭くした前記積層体に巻線を絶縁するための絶縁体を介して巻線をした後、前記積層体を湾曲させて前記積層体の帯状コア素材の一端と他端を当接させて環状にステータコアを成形したことを特徴とする回転電機の固定子製造方法である。
【０００７】
上記手段によってティースピッチを狭めることにより、積層体を環状にした際の渡り線の緩みを事前に吸収することができ、渡り線の緩みによる、コイルバラケや絶縁耐圧不良などの品質問題を解決することができる。
【０００８】
【発明の実施の形態】
上記の課題を解決するために、請求項１記載の回転電機の固定子製造方法は、一側に所定間隔でティースが形成され、隣接するティースの間に前記一側から他側に向けて先すぼまりの切り欠きと前記切り欠きの奥端に連接された拡開により形成された薄肉部を有する帯状コア素材をプレスで打ち抜き、前記帯状コア素材を積層し、前記積層した帯状コア素材の積層体の前記薄肉部を前記一側方向に屈曲させ、前記ティースの間隔を狭くした前記積層体に巻線を絶縁するための絶縁体を介して巻線をした後、前記積層体を湾曲させて前記積層体の帯状コア素材の一端と他端を当接させて環状にステータコアを成形したことを特徴とする。
【０００９】
請求項２記載の回転電機の固定子製造方法は、一側に所定間隔でティースが形成され、隣接するティースの間に前記一側から他側に向けて先すぼまりの切り欠きと前記切り欠きの奥端に連接された拡開により形成された薄肉部を有する帯状コア素材をプレスで打ち抜き、前記帯状コア素材を積層し、前記積層した帯状コア素材の積層体の前記薄肉部を積層方向に屈曲させ、前記ティースの間隔を狭くした前記積層体に巻線を絶縁するための絶縁体を介して巻線をした後、前記積層体を湾曲させて前記積層体の帯状コア素材の一端と他端を当接させて環状にステータコアを成形したことを特徴とする。
【００１０】
請求項３記載の回転電機の固定子製造方法は、積層した帯状コア素材の積層体において、少なくとも一枚は薄肉部を省略したことを特徴とする。
【００１１】
請求項４記載の回転電機の固定子製造方法は、積層した帯状コア素材の積層体において、両端面数枚以外は薄肉部を省略したことを特徴とする。
【００１２】
請求項５記載の回転電機の固定子製造方法は、帯状コア素材において、薄肉部より複数に分割したことを特徴とする請求項１、請求項２、請求項３、請求項４記載の回転電機の固定子製造方法。
【００１３】
【実施例】
以下、本発明の具体例について実施例毎に図面を用いて説明する。なお、本発明の技術的範囲は、以下に示す実施例に拘束されるものではない。
【００１４】
（実施例１）
以下、本発明の第一の実施例について、図１、図２に基づき説明する。図２は図１の要部の拡大図である。
【００１５】
図１および図２において、一側５Ａに所定間隔でティース１が形成され、隣接するティース１の間に前記一側５Ａから他側５Ｂに向けて先すぼまりの切り欠き２と前記切り欠き２の奥端に連接された拡開３により形成された薄肉部４を有する帯状コア素材５をプレスで打ち抜き、前記帯状コア素材５を積層し、前記積層した帯状コア素材５の積層体７の前記薄肉部４を前記一側５Ａ方向に屈曲させ、前記ティース１の間隔を狭くした前記積層体７に巻線を絶縁するための絶縁体を介して巻線をした後、前記積層体７を湾曲させて前記積層体７の帯状コア素材５の一端と他端を当接させて環状にステータコア８を成形したことを特徴とする回転電機の固定子製造方法である。
【００１６】
このようにティースピッチを狭めることにより、積層体を環状にした際の渡り線の緩みを事前に吸収することができ、渡り線の緩みによる、コイルバラケや絶縁耐圧不良などの品質問題を解決することができる。
【００１７】
（実施例２）
以下、本発明の第二の実施例について、図３、図４に基づき説明する。図４は図３の要部の拡大図である。
【００１８】
図３において、実施例１と同様の帯状コア素材５を使用し、前記帯状コア素材５を積層し、前記積層した帯状コア素材５の積層体７の前記薄肉部４を積層方向に屈曲させ、前記ティース１の間隔を狭くした前記積層体７に巻線を絶縁するための絶縁体を介して巻線をした後、前記積層体７を湾曲させて前記積層体７の帯状コア素材５の一端と他端を当接させて環状にステータコア８を成形したことを特徴とする回転電機の固定子製造方法である。
【００１９】
このようにティースピッチを狭めることにより、積層体を環状にした際の渡り線の緩みを事前に吸収することができ、渡り線の緩みによる、コイルバラケや絶縁耐圧不良などの品質問題を解決することができる。
【００２０】
（実施例３）
以下、本発明の第三の実施例について図５に基づき説明する。
【００２１】
図５において、一側５Ａに所定間隔でティース１が形成され、隣接するティース１の間に前記一側５Ａから他側５Ｂに向けて先すぼまりの切り欠き２と前記切り欠き２の奥端に連接された拡開３により形成された薄肉部４を有する帯状コア素材５と、少なくとも一枚は前記帯状コア素材５の前記薄肉部を省略したコア素材６とをプレス金型内で打ち抜きおよび積層し、前記積層体７の前記薄肉部４を前記一側５Ａ方向に屈曲させ、前記ティース１の間隔を狭くした前記積層体７に巻線を絶縁するための絶縁体を介して巻線をした後、前記積層体７を湾曲させて前記積層体７の帯状コア素材５の一端と他端を当接させて環状にステータコア８を成形したことを特徴とする回転電機の固定子製造方法である。
【００２２】
このようにティースピッチを狭めることにより、積層体を環状にした際の渡り線の緩みを事前に吸収することができ、渡り線の緩みによる、コイルバラケや絶縁耐圧不良などの品質問題を解決することができる。また、薄肉部を省略したコア素材を積層コアに含むことにより、薄肉部を省略した帯状コア素材を全く含まない積層コアに比べ、より小さい力で薄肉部を屈曲させ、ティースピッチを狭めることができる利点があり、積厚の大きいものに対して有効である。
【００２３】
（実施例４）
以下、本発明の第四の実施例について、図６に基づき説明する。
【００２４】
一側５Ａに所定間隔でティース１が形成され、隣接するティース１の間に前記一側５Ａから他側５Ｂに向けて先すぼまりの切り欠き２と前記切り欠き２の奥端に連接された拡開３により形成された薄肉部４を有する帯状コア素材５をプレスで打ち抜き、前記帯状コア素材５を積層し、前記積層した帯状コア素材５の積層体７の前記薄肉部４を積層方向に屈曲させ、前記ティース１の間隔を狭くした前記積層体７に巻線を絶縁するための絶縁体を介して巻線をした後、前記積層体７を湾曲させて円弧状のコア分割体９を複数個製作し、前記複数個のコア分割体９を接合して筒状にステータコアを成形したことを特徴とする製造方法である。
【００２５】
このようにティースピッチを狭めることにより、積層体を環状にした際の渡り線の緩みを事前に吸収することができ、渡り線の緩みによる、コイルバラケや絶縁耐圧不良などの品質問題を解決することができる。
【００２６】
【発明の効果】
以上のように本発明によればティースピッチを狭めることにより、積層体を環状にした際の渡り線の緩みを事前に吸収することができ、渡り線の緩みによる、コイルバラケや絶縁耐圧不良などの品質問題を解決することができる。
【図面の簡単な説明】
【図１】本発明の第一の実施例における回転電機の固定子の製造方法を示す図
【図２】図１の要部拡大図
【図３】本発明の第二の実施例における回転電機の固定子の製造方法を示す図
【図４】図３の要部拡大図
【図５】本発明の第三の実施例における回転電機の固定子の製造方法を示す図
【図６】本発明の第四の実施例における回転電機の固定子の製造方法を示す図
【図７】従来の実施例における回転電機の固定子の方法を示す図
【図８】図７の要部拡大図
【符号の説明】
１ ティース
２ 切り欠き
３ 拡開
４ 薄肉部
５ 帯状コア素材
５Ａ 帯状コア素材の一側
５Ｂ 帯状コア素材の他側
６ 薄肉部を省略したコア素材
７ 積層体
８ ステータコア
９ コア分割体[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for manufacturing a stator of a rotating electrical machine.
[0002]
[Prior art]
In recent years, rotating electrical machines have been made with high efficiency and low cost. A conventional stator of a rotating electric machine will be described below with reference to FIGS. FIG. 8 is an enlarged view of a main part of FIG.
[0003]
7 and 8, the teeth 1 are formed at predetermined intervals, and are formed by a notch 2 having a constriction between adjacent teeth 1 and an expansion 3 connected to the back end of the notch 2. A band-shaped core material 5 having a thin-walled portion 4 is punched out with a press, the band-shaped core material 5 is laminated, wound on a laminated body 7 of the band-shaped core material via an insulator for insulating the winding, and then laminated. The stator core 8 is formed in an annular shape by curving 7 to manufacture a stator for a rotating electrical machine.
[0004]
[Problems to be solved by the invention]
However, according to the conventional manufacturing method described above, when the laminated body of the strip-shaped core material is bent into an annular shape, the crossover between the teeth passes through the inner diameter side instead of passing over the thin portion, so that loosening occurs, and the coil And quality problems such as defective insulation withstand voltage.
[0005]
The present invention is to solve the above-mentioned conventional problems, and by devising the structure and manufacturing method of the stator, it is possible to suppress the looseness of the jumper wires and provide a highly reliable stator for a rotating electrical machine. Objective.
[0006]
[Means for Solving the Problems]
In order to achieve this object, the stator of the rotating electrical machine according to the present invention has teeth formed at predetermined intervals on one side, and a notch with a tapered tip from the one side toward the other side between adjacent teeth. And the strip-shaped core material having a thin-walled portion formed by spreading connected to the back end of the notch is pressed out, the strip-shaped core material is laminated, and the thin-walled portion of the laminated body of the strip-shaped core materials Is bent in the one-side direction, and the laminated body with a narrow interval between the teeth is wound through an insulator for insulating the winding, and then the laminated body is bent to form a belt-like shape of the laminated body A stator manufacturing method for a rotating electric machine, wherein one end and the other end of a core material are brought into contact with each other to form an annular stator core.
[0007]
By narrowing the teeth pitch by the above means, it is possible to absorb in advance the looseness of the connecting wire when the laminated body is made into an annular shape, and solve quality problems such as coil breakage and insulation breakdown voltage failure due to the loosening of the connecting wire. Can do.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
In order to solve the above-described problem, in the stator manufacturing method for a rotating electrical machine according to claim 1, teeth are formed at a predetermined interval on one side, and the tip is advanced from the one side toward the other side between adjacent teeth. A band-shaped core material having a thin-walled portion formed by expanding a concavity notch and an open end connected to the back end of the notch is punched out by pressing, the band-shaped core material is laminated, and the laminated band-shaped core material Bending the thin-walled portion of the laminate in the one side direction, winding the laminate through the insulator to insulate the winding in the laminate having a narrow interval between the teeth, and then bending the laminate. Then, one end and the other end of the band-shaped core material of the laminate are brought into contact with each other to form an annular stator core.
[0009]
The stator manufacturing method for a rotating electrical machine according to claim 2, wherein teeth are formed at a predetermined interval on one side, and the notch and the notch of the tapered portion are formed between adjacent teeth from the one side toward the other side. A strip-shaped core material having a thin-walled portion formed by spreading connected to the back end of the notch is punched out by pressing, the strip-shaped core material is laminated, and the thin-walled portion of the laminate of the laminated strip-shaped core material is laminated in the stacking direction And winding the laminated body with a narrow spacing between the teeth through an insulator for insulating the winding, and then bending the laminated body to one end of the band-shaped core material of the laminated body. A stator core is formed in an annular shape by contacting the other end.
[0010]
The stator manufacturing method for a rotating electrical machine according to claim 3 is characterized in that, in the laminated body of band-shaped core materials, at least one sheet omits a thin portion.
[0011]
The stator manufacturing method for a rotating electric machine according to claim 4 is characterized in that, in the laminated body of strip-shaped core materials, the thin-walled portion is omitted except for several sheets on both end faces.
[0012]
The stator manufacturing method for a rotating electrical machine according to claim 5, wherein the strip-shaped core material is divided into a plurality of parts from the thin wall portion, and the rotating electrical machine according to claim 1, 2, 3, or 4. Stator manufacturing method.
[0013]
【Example】
Hereinafter, specific examples of the present invention will be described for each embodiment with reference to the drawings. It should be noted that the technical scope of the present invention is not limited to the examples shown below.
[0014]
Example 1
A first embodiment of the present invention will be described below with reference to FIGS. FIG. 2 is an enlarged view of a main part of FIG.
[0015]
1 and 2, teeth 1 are formed at a predetermined interval on one side 5A, and the notch 2 and the notch are tapered between adjacent teeth 1 from the one side 5A toward the other side 5B. The strip-shaped core material 5 having the thin-walled portion 4 formed by the expansion 3 connected to the back end of 2 is punched out by pressing, the strip-shaped core material 5 is laminated, and the laminated body 7 of the laminated strip-shaped core material 5 is After winding the thin-walled portion 4 in the direction of the one side 5A and winding the laminated body 7 in which the interval between the teeth 1 is narrowed through an insulator for insulating the winding, the laminated body 7 is A stator manufacturing method for a rotating electrical machine, wherein the stator core 8 is formed in an annular shape by bending and contacting one end and the other end of the belt-like core material 5 of the laminate 7.
[0016]
By narrowing the teeth pitch in this way, looseness of the crossover when the laminated body is made into an annular shape can be absorbed in advance, and quality problems such as coil breakage and insulation withstand voltage failure due to loosening of the crossover can be solved. Can do.
[0017]
(Example 2)
Hereinafter, a second embodiment of the present invention will be described with reference to FIGS. FIG. 4 is an enlarged view of a main part of FIG.
[0018]
In FIG. 3, the same belt-like core material 5 as in Example 1 is used, the belt-like core material 5 is laminated, and the thin portion 4 of the laminated body 7 of the laminated belt-like core material 5 is bent in the lamination direction, After winding the laminated body 7 having a narrow interval between the teeth 1 through an insulator for insulating the winding, the laminated body 7 is bent to end one end of the strip-like core material 5 of the laminated body 7 The stator core 8 is formed in a ring shape by bringing the other end into contact with each other.
[0019]
By narrowing the teeth pitch in this way, looseness of the crossover when the laminated body is made into an annular shape can be absorbed in advance, and quality problems such as coil breakage and insulation withstand voltage failure due to loosening of the crossover can be solved. Can do.
[0020]
(Example 3)
A third embodiment of the present invention will be described below with reference to FIG.
[0021]
In FIG. 5, teeth 1 are formed at a predetermined interval on one side 5 </ b> A, and a tapered notch 2 and a back of the notch 2 are formed between adjacent teeth 1 from the one side 5 </ b> A toward the other side 5 </ b> B. A strip-shaped core material 5 having a thin-walled portion 4 formed by spreading 3 connected to the end and at least one core material 6 from which the thin-walled portion of the strip-shaped core material 5 is omitted are punched in a press mold. And winding the thin-walled portion 4 of the laminate 7 in the direction of the one side 5A, and winding the insulator 7 through the insulator to insulate the winding from the laminate 7 in which the interval between the teeth 1 is reduced. After that, the stator 7 is formed into an annular shape by bending the laminate 7 and bringing one end and the other end of the strip-like core material 5 of the laminate 7 into contact with each other. It is.
[0022]
By narrowing the teeth pitch in this way, loosening of the crossover when the laminated body is made into an annular shape can be absorbed in advance, and quality problems such as coil breakage and insulation breakdown voltage failure due to loosening of the crossover can be solved. Can do. In addition, by including the core material without the thin-walled portion in the laminated core, the thin-walled portion can be bent with a smaller force and the teeth pitch can be narrowed compared to the laminated core without the strip-like core material with the thin-walled portion omitted. There is an advantage that can be made, and it is effective for a large thickness.
[0023]
Example 4
The fourth embodiment of the present invention will be described below with reference to FIG.
[0024]
Teeth 1 are formed at a predetermined interval on one side 5A, and are connected to the notch 2 having a tapered shape and the back end of the notch 2 from the one side 5A toward the other side 5B between adjacent teeth 1. The strip-shaped core material 5 having the thin-walled portion 4 formed by the spreading 3 is punched out by pressing, the strip-shaped core material 5 is laminated, and the thin-walled portion 4 of the laminate 7 of the laminated strip-shaped core material 5 is laminated in the stacking direction. After winding the laminated body 7 having a narrow interval between the teeth 1 through an insulator for insulating the winding, the laminated body 7 is bent to form an arc-shaped core divided body 9. Is manufactured, and the plurality of core divided bodies 9 are joined to form a stator core in a cylindrical shape.
[0025]
By narrowing the teeth pitch in this way, loosening of the crossover when the laminated body is made into an annular shape can be absorbed in advance, and quality problems such as coil breakage and insulation breakdown voltage failure due to loosening of the crossover can be solved. Can do.
[0026]
【The invention's effect】
As described above, according to the present invention, by narrowing the teeth pitch, it is possible to absorb in advance the looseness of the connecting wire when the laminated body is made into an annular shape. Quality problems can be solved.
[Brief description of the drawings]
FIG. 1 is a view showing a method of manufacturing a stator of a rotating electrical machine in a first embodiment of the present invention. FIG. 2 is an enlarged view of a main part of FIG. 1. FIG. 3 is a rotating electrical machine in a second embodiment of the present invention. FIG. 4 is an enlarged view of the main part of FIG. 3. FIG. 5 is a diagram showing a method of manufacturing a stator of a rotating electrical machine in the third embodiment of the present invention. FIG. 7 is a diagram showing a method of manufacturing a stator of a rotating electrical machine in a fourth embodiment of the present invention. FIG. 7 is a diagram showing a method of a stator of a rotating electrical machine in a conventional embodiment. Explanation of]
DESCRIPTION OF SYMBOLS 1 Teeth 2 Notch 3 Expansion 4 Thin part 5 Band-shaped core material 5A One side 5B of the band-shaped core material 6 Other side 6 of the band-shaped core material 7 Core material 7 which omitted the thin-walled part 7 Laminated body 8 Stator core 9 Core divided body

Claims (5)

一側に所定間隔でティースが形成され、隣接するティースの間に前記一側から他側に向けて先すぼまりの切り欠きと前記切り欠きの奥端に連接された拡開により形成された薄肉部を有する帯状コア素材をプレスで打ち抜き、前記帯状コア素材を積層し、前記積層した帯状コア素材の積層体の前記薄肉部を前記一側方向に屈曲させ、前記ティースの間隔を狭くした前記積層体に巻線を絶縁するための絶縁体を介して巻線をした後、前記積層体を湾曲させて前記積層体の帯状コア素材の一端と他端を当接させて環状にステータコアを成形したことを特徴とする回転電機の固定子製造方法。Teeth are formed on one side at a predetermined interval, and are formed by expanding the conical notch from the one side toward the other side between the adjacent teeth and the back end of the notch. The strip-shaped core material having a thin-walled portion is punched out with a press, the strip-shaped core material is laminated, the thin-walled portion of the laminated body of the strip-shaped core material is bent in the one side direction, and the interval between the teeth is narrowed. After winding the laminated body through an insulator for insulating the winding, the laminated body is bent and one end and the other end of the belt-like core material of the laminated body are brought into contact with each other to form an annular stator core A stator manufacturing method for a rotating electric machine, characterized in that: 一側に所定間隔でティースが形成され、隣接するティースの間に前記一側から他側に向けて先すぼまりの切り欠きと前記切り欠きの奥端に連接された拡開により形成された薄肉部を有する帯状コア素材をプレスで打ち抜き、前記帯状コア素材を積層し、前記積層した帯状コア素材の積層体の前記薄肉部を積層方向に屈曲させ、前記ティースの間隔を狭くした前記積層体に巻線を絶縁するための絶縁体を介して巻線をした後、前記積層体を湾曲させて前記積層体の帯状コア素材の一端と他端を当接させて環状にステータコアを成形したことを特徴とする回転電機の固定子製造方法。Teeth are formed on one side at a predetermined interval, and are formed by expanding the conical notch from the one side toward the other side between the adjacent teeth and the back end of the notch. The laminate in which a strip-shaped core material having a thin-walled portion is punched out by pressing, the strip-shaped core material is laminated, the thin-walled portion of the laminated body of the strip-shaped core material is bent in the stacking direction, and the interval between the teeth is narrowed After winding through an insulator for insulating the winding, the laminated body was bent and one end and the other end of the belt-like core material of the laminated body were brought into contact with each other to form an annular stator core A method of manufacturing a stator for a rotating electrical machine. 積層した帯状コア素材の積層体において、少なくとも一枚は薄肉部を省略したことを特徴とする請求項１、請求項２記載の回転電機の固定子製造方法。3. The method of manufacturing a stator for a rotating electrical machine according to claim 1, wherein at least one sheet of the laminated body of band-shaped core materials omits a thin portion. 積層した帯状コア素材の積層体において、両端面数枚以外は薄肉部を省略したことを特徴とする請求項１、請求項２、請求項３記載の回転電機の固定子製造方法。4. The method of manufacturing a stator for a rotating electrical machine according to claim 1, wherein in the laminated body of the laminated belt-shaped core materials, thin portions are omitted except for several sheets at both end faces. 帯状コア素材において、薄肉部より複数に分割したことを特徴とする請求項１、請求項２、請求項３、請求項４記載の回転電機の固定子製造方法。The method of manufacturing a stator for a rotating electrical machine according to claim 1, wherein the strip-shaped core material is divided into a plurality of thin-walled portions.
JP2001389131A 2001-12-21 2001-12-21 Stator manufacturing method for rotating electrical machine Expired - Fee Related JP3903784B2 (en)

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KR100818662B1 (en) 2006-07-25 2008-04-01 주식회사 엠비성산 Stator iron core for alternator and motor
KR100818661B1 (en) 2006-07-25 2008-04-01 주식회사 엠비성산 Stator iron core for alternator and motor
JP5055020B2 (en) * 2007-05-21 2012-10-24 黒田精工株式会社 Linked laminated core, armature manufacturing method, and progressive mold apparatus
JP5291433B2 (en) * 2008-03-19 2013-09-18 アスモ株式会社 LAMINATED CORE OF ROTATING ELECTRIC MACHINE AND METHOD FOR MANUFACTURING THE SAME
CN103023165B (en) * 2011-09-21 2017-10-31 德昌电机(深圳)有限公司 Stator core construction for motor and stator forming method
JP5988915B2 (en) * 2013-05-21 2016-09-07 三菱電機株式会社 Rotating electric machine laminated iron core, rotating electric machine laminated iron core manufacturing method, stator and rotating electric machine
CN104917304A (en) * 2015-06-03 2015-09-16 威灵（芜湖）电机制造有限公司 Prefabricated stamped sheet, stator stamped sheet, stator iron core, manufacturing method of stator iron core and motor

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