JPH11234973A - Manufacture of slotless stator iron core - Google Patents

Manufacture of slotless stator iron core

Info

Publication number
JPH11234973A
JPH11234973A JP5430298A JP5430298A JPH11234973A JP H11234973 A JPH11234973 A JP H11234973A JP 5430298 A JP5430298 A JP 5430298A JP 5430298 A JP5430298 A JP 5430298A JP H11234973 A JPH11234973 A JP H11234973A
Authority
JP
Japan
Prior art keywords
iron core
core
shaped
slotless stator
manufacturing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP5430298A
Other languages
Japanese (ja)
Inventor
Kenji Watanabe
賢司 渡邊
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.)
Yaskawa Electric Corp
Original Assignee
Yaskawa Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yaskawa Electric Corp filed Critical Yaskawa Electric Corp
Priority to JP5430298A priority Critical patent/JPH11234973A/en
Publication of JPH11234973A publication Critical patent/JPH11234973A/en
Pending legal-status Critical Current

Links

Landscapes

  • Iron Core Of Rotating Electric Machines (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing method of a slotless stator iron core which can form a layered iron core easily into an arbitrary shape with high yield of iron core material. SOLUTION: This manufacturing method of slotless stator iron core, which forms the slotless stator iron core 1 by layering thin-plate shaped iron cores, involves forming a strip continuous iron core 2 which consists of a fan-shaped iron core part 2a which has the same arc as an inner diameter and an outer diameter at the time of layering and is formed at an arbitrary angle with no 360 as its multiple between both end parts in a circumferential direction, and an iron core connection part 2b for connecting the iron core part 2a at an outer periphery part by means of press-punching to prevent the iron core connection part 2b from aligning linear in its axial direction, and spirally-layering the strip continuous iron core 2. It is thus possible to manufacture the stator iron core easily, and improve the yield of iron core raw material. The core connection parts do not aline linearly in the axial direction, thus it is possible to suppress generation of cogging torque.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、薄板状の鉄心を積
層してスロットレスの固定子鉄心を構成するスロットレ
ス固定子鉄心の製造方法に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a slotless stator core in which a thin iron core is laminated to form a slotless stator core.

【0002】[0002]

【従来の技術】従来、スロットレスの固定子鉄心は、次
のようにして製造していた。 (1) 図4に示すように、プレス抜きされたリング状の鉄
心10を順次積層して固定子鉄心11を製造する。 (2) 図5に示すように、任意幅の真っ直ぐな帯状鉄心1
2を、板厚を変形させながら螺旋状に積層して固定子鉄
心13を製造する。
2. Description of the Related Art Conventionally, a slotless stator core has been manufactured as follows. (1) As shown in FIG. 4, a stator core 11 is manufactured by sequentially laminating a press-cut ring-shaped core 10. (2) As shown in FIG. 5, a straight band-shaped iron core 1 of arbitrary width
2 are spirally laminated while deforming the plate thickness to produce the stator core 13.

【0003】[0003]

【発明が解決しようとする課題】しかしながら、前者の
従来技術では、鉄心素材の歩留りが悪いという問題があ
り、また、後者の従来技術では、内径側と外径側の板厚
が異なるため、積層時に鉄心倒れが生じるとともに、鉄
心の幅に対して任意に内径を選択できないという問題が
あった。そこで本発明は、鉄心素材の歩留りがよく、ま
た鉄心倒れがなく、さらに固定子鉄心を任意形状に容易
に製作することのできるスロットレス固定子鉄心の製造
方法を提供することを目的とするものである。
However, in the former prior art, there is a problem that the yield of the iron core material is poor, and in the latter prior art, since the plate thickness on the inner diameter side and the outer diameter side are different, the lamination is difficult. There has been a problem that the iron core sometimes collapses and the inner diameter cannot be arbitrarily selected with respect to the width of the iron core. Therefore, an object of the present invention is to provide a method of manufacturing a slotless stator core that has a good yield of the core material, does not fall down, and can easily manufacture the stator core into an arbitrary shape. It is.

【0004】[0004]

【課題を解決するための手段】上記問題を解決するた
め、本発明は、薄板状の鉄心を積層してスロットレスの
固定子鉄心を構成するスロットレス固定子鉄心の製造方
法において、積層時の内径および外径と同一の円弧を有
し、かつ、周方向の両端部間を360を倍数に持たない
任意の角度で形成した扇状の鉄心部と、前記コア部を外
周部で連結する鉄心連結部とからなる帯状の連続鉄心を
プレス打ち抜きにより形成し、前記鉄心連結部が軸方向
に直線状に並ばないようにして、前記帯状の連続鉄心を
螺旋状に積層するようにしたものである。したがって、
固定子鉄心の製造が容易に行えるとともに、鉄心素材の
歩留りが向上する。また、コア連結部が軸方向に直線状
に並ばないので、コギングトルクの発生が抑えられる。
SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a method of manufacturing a slotless stator core in which a thin plate-shaped iron core is laminated to form a slotless stator core. A fan-shaped iron core having the same arc as the inner diameter and the outer diameter and formed at an arbitrary angle not having a multiple of 360 between both ends in the circumferential direction, and an iron core connecting the core at the outer circumference; The continuous iron core is formed by press punching, and the continuous iron cores are spirally laminated so that the iron core connecting portions are not arranged linearly in the axial direction. Therefore,
The stator core can be easily manufactured, and the yield of the core material is improved. Further, since the core connecting portions are not arranged linearly in the axial direction, the occurrence of cogging torque is suppressed.

【0005】[0005]

【発明の実施の形態】以下、本発明の実施例を図1ない
し図3に基づいて説明する。図1は本発明の実施例を示
す帯状鉄心の正面図、図2は帯状の連続鉄心を螺旋状に
積層している状態を示す斜視図、図3は帯状の連続鉄心
を螺旋状に積層して製造した固定子鉄心の内周面を示す
図である。図1において、1は固定子鉄心で、帯状の連
続鉄心2を用いて構成している。前記帯状の連続鉄心2
は、扇状の鉄心部2aと、前記扇状の鉄心部2aの周方
向両端部に、内径側を切り欠いて形成した鉄心連結部2
bとからなっている。前記扇状の鉄心部2aの内径は、
積層時の固定子鉄心内径と同一の円弧を有し、扇状の鉄
心部2bの外径は、積層時の固定子鉄心外径と同一の円
弧を有している。また、前記扇状の鉄心部2aの周方向
の両端部間は、360を倍数に持たない任意の角度で形
成している。前記帯状の連続鉄心2は、プレスの打ち抜
きによって形成するとともに、図2に示すように、前記
鉄心連結部2bの部分を折り曲げて螺旋状に巻きつつ、
円筒状に積層をして固定子鉄心1を製造していく。固定
子鉄心1の製造にあたっては、前記扇状の鉄心部2aの
周方向の両端部間は、360を倍数に持たない任意の角
度で形成しているので、図3に示すように、帯状の連続
鉄心2が積層された場合、前記鉄心連結部2bの位置は
順次周方向にずれていく。したがって、前記鉄心連結部
2bは、軸方向に直線状に並ぶことがなく、コギングト
ルクの発生を抑えることができる。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a front view of a belt-shaped core showing an embodiment of the present invention, FIG. 2 is a perspective view showing a state where a band-shaped continuous core is spirally laminated, and FIG. FIG. 5 is a view showing an inner peripheral surface of a stator core manufactured by the above method. In FIG. 1, reference numeral 1 denotes a stator core, which is configured by using a belt-shaped continuous core 2. The strip-shaped continuous iron core 2
Is a fan-shaped core portion 2a, and an iron core connecting portion 2 formed by cutting out the inner diameter side at both circumferential ends of the fan-shaped core portion 2a.
b. The inner diameter of the fan-shaped core portion 2a is:
It has the same arc as the inner diameter of the stator core at the time of lamination, and the outer diameter of the fan-shaped core portion 2b has the same arc as the outer diameter of the stator core at the time of lamination. Further, between the two ends in the circumferential direction of the fan-shaped core portion 2a is formed at an arbitrary angle not having a multiple of 360. The band-shaped continuous iron core 2 is formed by punching out a press, and as shown in FIG. 2, while bending the portion of the iron core connecting portion 2b to be spirally wound,
The stator core 1 is manufactured by laminating in a cylindrical shape. In manufacturing the stator core 1, the fan-shaped core portion 2 a is formed at an arbitrary angle that does not have a multiple of 360 between the circumferential ends of the fan-shaped core portion 2 a. When the iron cores 2 are stacked, the positions of the iron core connecting portions 2b are sequentially shifted in the circumferential direction. Therefore, the iron core connecting portions 2b are not arranged in a straight line in the axial direction, so that the occurrence of cogging torque can be suppressed.

【0006】[0006]

【発明の効果】以上述べたように 本発明によれば次の
ような効果がある。 (1) 固定子鉄心を、帯状の連続鉄心を螺旋状に積層して
製造するので、鉄心素材の歩留りがよい。また、固定子
鉄心は板厚が変わらないので、鉄心倒れを起こすことが
ない。 (2) 帯状の連続鉄心を、扇状の鉄心部と、前記扇状の鉄
心部の周方向両端部に形成した鉄心連結部とで構成して
いるので、積層鉄心を任意形状で容易に製作することが
できる。 (3) 帯状の連続鉄心を螺旋状に積層する際に、鉄心連結
部が軸方向に直線状に並ぶことがないので、コギングト
ルクの発生を抑えることができる。
As described above, according to the present invention, the following effects can be obtained. (1) Since the stator core is manufactured by spirally laminating continuous belt-shaped cores, the yield of the core material is good. Further, since the thickness of the stator core does not change, the core does not fall down. (2) Since the belt-shaped continuous iron core is composed of the fan-shaped iron core portion and the iron core connecting portions formed at both ends in the circumferential direction of the fan-shaped iron core portion, the laminated iron core can be easily manufactured in any shape. Can be. (3) When the belt-shaped continuous iron cores are stacked spirally, the iron core connecting portions do not line up linearly in the axial direction, so that the occurrence of cogging torque can be suppressed.

【図面の簡単な説明】[Brief description of the drawings]

【図1】 本発明の実施例を示す帯状の連続鉄心の正面
図である。
FIG. 1 is a front view of a strip-shaped continuous iron core showing an embodiment of the present invention.

【図2】 本発明の実施例を示す帯状の連続鉄心を螺旋
状に積層している状態を示す斜視図である。
FIG. 2 is a perspective view showing a state in which strip-shaped continuous iron cores according to the embodiment of the present invention are spirally laminated.

【図3】 本発明の実施例における帯状の連続鉄心を螺
旋状に積層して製造した固定子鉄心の内周面を示す図で
ある。
FIG. 3 is a diagram illustrating an inner peripheral surface of a stator core manufactured by spirally stacking strip-shaped continuous cores according to the embodiment of the present invention.

【図4】 従来のスロットレス固定子鉄心の製造方法を
示す斜視図である。
FIG. 4 is a perspective view showing a method for manufacturing a conventional slotless stator core.

【図5】 従来の他のスロットレス固定子鉄心の製造方
法を示す斜視図である。
FIG. 5 is a perspective view showing a method for manufacturing another conventional slotless stator core.

【符号の説明】[Explanation of symbols]

1 固定子鉄心、 2 帯状の連続鉄心、 2a 扇状の鉄心部、 2b 鉄心連結部 DESCRIPTION OF SYMBOLS 1 Stator core, 2 Strip-shaped continuous core, 2a Fan-shaped core, 2b Core connection

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 薄板状の鉄心を積層してスロットレスの
固定子鉄心を構成するスロットレス固定子鉄心の製造方
法において、 積層時の内径および外径と同一の円弧を有し、かつ、周
方向の両端部間を360を倍数に持たない任意の角度で
形成した扇状の鉄心部と、前記鉄心部を外周部で連結す
る鉄心連結部とからなる帯状の連続鉄心をプレス打ち抜
きにより形成し、前記鉄心連結部が軸方向に直線状に並
ばないようにして、前記帯状の連続鉄心を螺旋状に積層
することを特徴とするスロットレス固定子鉄心の製造方
法。
1. A method of manufacturing a slotless stator core comprising laminating thin plate-shaped iron cores to form a slotless stator core, comprising: A band-shaped continuous iron core consisting of a fan-shaped iron core formed at an arbitrary angle not having a multiple of 360 between both ends in the direction and an iron core connecting part connecting the iron core with an outer peripheral part is formed by press punching, A method for manufacturing a slotless stator core, wherein the strip-shaped continuous cores are helically laminated such that the core connection portions are not arranged linearly in the axial direction.
JP5430298A 1998-02-18 1998-02-18 Manufacture of slotless stator iron core Pending JPH11234973A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5430298A JPH11234973A (en) 1998-02-18 1998-02-18 Manufacture of slotless stator iron core

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5430298A JPH11234973A (en) 1998-02-18 1998-02-18 Manufacture of slotless stator iron core

Publications (1)

Publication Number Publication Date
JPH11234973A true JPH11234973A (en) 1999-08-27

Family

ID=12966788

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5430298A Pending JPH11234973A (en) 1998-02-18 1998-02-18 Manufacture of slotless stator iron core

Country Status (1)

Country Link
JP (1) JPH11234973A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1120882A2 (en) 2000-01-28 2001-08-01 Moteurs Leroy-Somer Strip from metal sheet sectors and method of manufacturing a magnetic circuit of an electrical machine
JP2010193715A (en) * 2006-02-28 2010-09-02 Mitsui High Tec Inc Laminated iron core and manufacturing method therefor
RU2713217C1 (en) * 2019-08-30 2020-02-04 Федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский Томский политехнический университет" Manufacturing method of spiral active element of torque motor stator

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1120882A2 (en) 2000-01-28 2001-08-01 Moteurs Leroy-Somer Strip from metal sheet sectors and method of manufacturing a magnetic circuit of an electrical machine
FR2804552A1 (en) * 2000-01-28 2001-08-03 Leroy Somer METHOD FOR MANUFACTURING AN ELECTRIC MACHINE CIRCUIT
EP1120882A3 (en) * 2000-01-28 2002-11-13 Moteurs Leroy-Somer Strip from metal sheet sectors and method of manufacturing a magnetic circuit of an electrical machine
US6741005B2 (en) 2000-01-28 2004-05-25 Moteurs Leroy-Somer Strip of lamination sectors and a method of manufacturing a magnetic circuit for an electrical machine
JP2010193715A (en) * 2006-02-28 2010-09-02 Mitsui High Tec Inc Laminated iron core and manufacturing method therefor
RU2713217C1 (en) * 2019-08-30 2020-02-04 Федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский Томский политехнический университет" Manufacturing method of spiral active element of torque motor stator

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