JPH053648A - Laminated core for stator of motor and its manufacture - Google Patents
Laminated core for stator of motor and its manufactureInfo
- Publication number
- JPH053648A JPH053648A JP18290791A JP18290791A JPH053648A JP H053648 A JPH053648 A JP H053648A JP 18290791 A JP18290791 A JP 18290791A JP 18290791 A JP18290791 A JP 18290791A JP H053648 A JPH053648 A JP H053648A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic pole
- core
- pole core
- laminated
- pieces
- 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.)
- Granted
Links
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、電動機の固定子に用い
る積層鉄心に係り、特に分離積層したそれぞれの積層磁
極鉄心部と、該積層磁極鉄心部を装着する積層ヨーク鉄
心部で構成された電動機の固定子用積層鉄心及びその製
造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated iron core used for a stator of an electric motor, and in particular, it is composed of respective laminated magnetic pole iron core portions separated and laminated, and a laminated yoke iron iron core portion to which the laminated magnetic pole iron core portion is mounted. The present invention relates to a laminated core for a stator of an electric motor and a method for manufacturing the same.
【0002】[0002]
【従来の技術】従来、電動機の固定子鉄心は図5に示す
ように、プレス成形によって内側の多数の磁極10と、
カシメ用突起11とをプレス成形した固定子鉄心片12
を多数枚積層重合して形成されていたが、磁極10が内
側にあるので、巻線が困難となり、巻線作業の自動化も
困難となっていた。そこで、本出願人は先に特公昭57
−12378号公報に示すように、固定子鉄心を外側の
積層ヨーク鉄心部と、該積層ヨーク鉄心部に装着されて
各磁極毎に分割された積層磁極部とに分離し、巻線の自
動化を図れる回転電機の固定子の製造方法を提案した。2. Description of the Related Art Conventionally, as shown in FIG. 5, a stator core of an electric motor has a large number of inner magnetic poles 10 formed by press molding.
Stator core piece 12 press-formed with caulking projection 11
However, since the magnetic pole 10 is inside, winding is difficult and automation of winding work is also difficult. Therefore, the applicant of the present invention has previously proposed Japanese Patent Publication Sho 57
As disclosed in Japanese Patent No. 12378, the stator core is separated into an outer laminated yoke core portion and a laminated magnetic pole portion which is mounted on the laminated yoke core portion and divided into magnetic poles, thereby automating winding. A method of manufacturing a stator of a rotating electric machine that can be achieved has been proposed.
【0003】[0003]
【発明が解決しようとする課題】しかしながら、前記特
公昭57−12378号公報において提案された回転電
機の固定子においては、内側の積層磁極部が全部バラバ
ラであるので、該積層磁極部を所定位置に保持する為に
治具を必要とし装置が複雑化し、更にはその製造工程も
複雑化するという問題点があった。また、使用する電磁
鋼板は規格で製造されたものであっても1〜3%程度の
厚みの偏差を有するので、シート状の電磁鋼板を順次プ
レスしてそのまま積層すると、積層された鉄心にも1〜
3%の高さの偏差を生じる場合があり、これによって積
層ヨーク鉄心部の装着溝が傾き積層磁極部が装着し難い
場合があるという問題点があった。本発明はかかる事情
に鑑みてなされたもので、特別に治具を必要とすること
なく、各積層磁極が所定間隔で保持され、しかも巻線及
びプレス作業も容易で、更には、場所によって厚みの偏
差の大きい電磁鋼板を使用しても略均等な高さを有し装
着溝の傾きの極めて少ない積層鉄心を得ることができる
電動機の固定子用積層鉄心及びその製造方法を提供する
ことを目的とする。However, in the stator of the rotating electric machine proposed in Japanese Patent Publication No. 57-12378, since the inner laminated magnetic pole portions are all disjointed, the laminated magnetic pole portions are arranged at predetermined positions. Therefore, there is a problem that a jig is required to hold the device and the device is complicated, and the manufacturing process is also complicated. Further, even if the electromagnetic steel sheet used is a standard one, there is a thickness deviation of about 1 to 3%, so if sheet-like electromagnetic steel sheets are sequentially pressed and laminated, the laminated iron core will also be used. 1 to
A height deviation of 3% may occur, which causes a problem that the mounting groove of the laminated yoke iron core portion is inclined and the laminated magnetic pole portion is difficult to mount. The present invention has been made in view of the above circumstances, and each laminated magnetic pole can be held at a predetermined interval without requiring a jig, and winding and pressing work can be easily performed. It is an object of the present invention to provide a laminated iron core for a stator of an electric motor and a method for manufacturing the laminated iron core, which can obtain a laminated iron core having a substantially uniform height and a very small inclination of a mounting groove even if an electromagnetic steel sheet having a large deviation of And
【0004】[0004]
【課題を解決するための手段】前記目的に沿う請求項第
1項記載の電動機の固定子用積層鉄心は、固定子鉄心の
内周に沿って放射状に等配列される多数の磁極鉄心片と
該磁極鉄心片に対応して内側に装着溝を備えたヨーク鉄
心片とを、それぞれの鉄心片に配したカシメ用突起を用
いて順次積層重合してなる分割形成された積層ヨーク鉄
心部と積層磁極鉄心部とを有してなる電動機の固定子用
積層鉄心であって、前記積層磁極鉄心部は、磁極毎に分
割された多数枚の磁極鉄心片を順次転積重合し、各磁極
間に間隙を形成するように放射状に等配列された主磁極
部と、前記主磁極部の上下にそれぞれ固着され、前記多
数の磁極を2以上の群に分け、それぞれの群に属する磁
極間の隙間を塞ぐように連結部を備えた磁極鉄心群片を
形成し、この磁極鉄心群片を相互に円周方向に転積重合
した連結磁極鉄心部とから構成されている。また、前記
目的に沿う請求項第2項記載の電動機の固定子用積層鉄
心の製造方法は、固定子鉄心の内周に沿って放射状に等
配列された多数の磁極鉄心片と、該磁極鉄心片を装着す
る溝を備えたヨーク鉄心片を打抜き形成し、それぞれの
鉄心片に配したカシメ用突起を用いて金型内に順次積層
重合して、積層磁極鉄心部と積層ヨーク鉄心部とに分割
積層する工程を備えた電動機の固定子用積層鉄心の製造
方法において、前記多数の磁極鉄心片間の全てに間隙を
形成するに際して、予め、前記間隙に相当する領域を間
欠的に打抜き形成する工程と、前記多数の磁極鉄心片間
の少なくとも2つの間隙を除く、他の磁極鉄心片間の間
隙を塞ぐ連結部を残すようにエアギャップを打抜き、磁
極鉄心群片を形成する工程と、前記磁極鉄心群片を少な
くとも2枚を順次前記金型内に転積重合して連結磁極鉄
心部を形成し、該連結磁極鉄心部の上にそれぞれ分割さ
れた磁極鉄心片を順次転積重合した主磁極部を打抜き形
成し、更にその上に前記磁極鉄心群片と同一形状の磁極
鉄心群片の少なくとも2枚を順次転積重合した連結磁極
鉄心部を打ち込み形成して積層磁極鉄心部を形成する工
程とを有して構成されている。According to a first aspect of the present invention, there is provided a laminated core for a stator of a motor according to claim 1, wherein a plurality of magnetic pole core pieces are arranged in a radial pattern along an inner circumference of the stator core. A yoke core piece having a mounting groove on the inside corresponding to the magnetic pole core piece is sequentially laminated and polymerized by using caulking protrusions arranged on each core piece A laminated core for a stator of an electric motor having a magnetic pole core portion, wherein the laminated magnetic pole core portion sequentially transposes and superposes a large number of magnetic pole core pieces divided for each magnetic pole, and between each magnetic pole. Main magnetic pole portions radially arranged so as to form a gap and upper and lower sides of the main magnetic pole portion are fixed to each other. The large number of magnetic poles are divided into two or more groups, and a gap between the magnetic poles belonging to each group is formed. Form a magnetic pole iron core group piece with a connecting portion so as to close it, and Heart group pieces to each other in the circumferential direction is composed of a rotational stacking polymerized connecting pole core portion. According to a second aspect of the present invention, a method of manufacturing a laminated core for a stator of an electric motor according to the first aspect of the present invention includes a plurality of magnetic pole core pieces radially and equally arranged along an inner circumference of the stator core, and the magnetic pole cores. A yoke iron core piece having a groove for mounting the piece is punched and formed, and the caulking protrusions arranged on each iron core piece are used to successively stack and polymerize in the mold to form a laminated magnetic pole core portion and a laminated yoke iron core portion. In a method of manufacturing a laminated core for a stator of an electric motor, which comprises a step of separately laminating, when a gap is formed in all of the plurality of magnetic pole core pieces, a region corresponding to the gap is preliminarily punched and formed. Forming a magnetic pole core group piece by punching out an air gap so as to leave a connecting portion that closes a gap between other magnetic pole core pieces except at least two gaps between the plurality of magnetic pole core pieces; At least a magnetic pole core group piece The sheets are sequentially transposed and polymerized in the mold to form a connecting magnetic pole core portion, and the main magnetic pole portion is formed by sequentially transposing and superposing the divided magnetic pole core pieces on the connecting magnetic pole core portion, And forming a laminated magnetic pole core portion by stamping and forming a connecting magnetic pole core portion on which at least two magnetic pole core group pieces having the same shape as the magnetic pole core group piece are sequentially transposed and polymerized. Has been done.
【0005】[0005]
【作用】請求項第1項記載の電動機の固定子用積層鉄心
においては、磁極毎に分割した磁極鉄心片を順次転積重
合して主磁極部を構成し、該主磁極部の上下に多数の磁
極を2以上に分割し、該磁極鉄心片間にはその隙間を塞
ぐ連結部を備えた磁極鉄心群片を円周方向に転積重合し
て、隣合う磁極間の隙間を無くした連結磁極鉄心部を接
合しているので、組み立てられた積層磁極鉄心部は一体
となる。そして、主磁極部の隣合う磁極には隙間が設け
られているので、磁気抵抗が大きくなりこれによって効
率の良い磁束を発生させることができる。請求項第2項
記載の電動機の固定子用積層鉄心の製造方法において
は、前記多数の磁極鉄心片間の全てに間隙を形成するに
際して、予め、前記間隙に相当する領域を間欠的に打抜
き形成する工程と、前記多数の磁極鉄心片間の少なくと
も2つの間隙を除く、他の磁極鉄心片間の間隙を塞ぐ連
結部を残すようにエアギャップを打抜き、磁極鉄心群片
を形成する工程とを有して、後工程の組立状況に応じて
同一の金型で、単一の磁極を有する磁極鉄心片と、連結
された複数の磁極を有する磁極鉄心群片とを形成する。
そして、まず前記磁極鉄心群片を少なくとも2枚転積接
合して全体が繋がった連結磁極鉄心部を金型内で作り、
その上に全体が切り離された磁極鉄心片を徐々に転積接
合する。これによって転積接合された磁極鉄心片に厚み
の偏差があっても均等に分割されるので、全体として高
さが略均等な、傾きの無い積層磁極鉄心部を形成する。
この上に前記磁極鉄心群片と同一形状の磁極鉄心群片を
転積接合した連結磁極鉄心部を載せるので、各磁極鉄心
片がバラバラになった主磁極部を上下の磁極鉄心群片で
結合し、一体化させることができる。In the laminated core for a stator of an electric motor according to claim 1, a main magnetic pole portion is formed by sequentially transposing and stacking magnetic pole core pieces divided for each magnetic pole, and a large number of them are provided above and below the main magnetic pole portion. Is divided into two or more magnetic pole core pieces, and a magnetic pole core group piece having a connecting portion that closes the gap between the magnetic pole core pieces is transposed in the circumferential direction to form a stack to eliminate the gap between adjacent magnetic poles. Since the magnetic pole core portions are joined together, the assembled laminated magnetic pole core portions are integrated. Since a gap is provided between the adjacent magnetic poles of the main magnetic pole portion, the magnetic resistance is increased, and thereby an efficient magnetic flux can be generated. The method of manufacturing a laminated core for a stator of an electric motor according to claim 2, wherein when a gap is formed in all of the plurality of magnetic pole core pieces, a region corresponding to the gap is preliminarily punched and formed. And a step of forming a magnetic pole core group piece by punching out an air gap so as to leave a connecting portion that closes a gap between other magnetic pole core pieces except at least two gaps between the plurality of magnetic pole core pieces. Thus, a magnetic pole core piece having a single magnetic pole and a magnetic pole core group piece having a plurality of magnetic poles connected to each other are formed in the same mold in accordance with the assembly situation in the subsequent process.
Then, first, at least two pieces of the magnetic pole core group pieces are transposed and joined to each other to form a connected magnetic pole core portion which is entirely connected in a mold,
Then, the magnetic pole core pieces separated from each other are gradually transposed and joined. As a result, even if there is a deviation in thickness of the pole core pieces that have been transposed and joined, the pole pieces are evenly divided, so that a laminated magnetic pole core portion having a substantially uniform height and having no inclination is formed.
Since the connected magnetic pole core portion, in which the magnetic pole core group pieces having the same shape as the magnetic pole core group pieces are transposed and joined, is placed on this, the main magnetic pole portions in which the respective magnetic pole core pieces are disjointed are coupled by the upper and lower magnetic pole core group pieces. Can be integrated.
【0006】[0006]
【実施例】続いて、添付した図面を参照しつつ、本発明
を具体化した実施例につき説明し、本発明の理解に供す
る。ここに、図1は本発明の一実施例に係る電動機の固
定子用積層鉄心の製造工程を説明する為の概略平面図、
図2は同斜視図、図3は同組立状態を示す一部省略平面
図、図4は同斜視図である。Embodiments of the present invention will now be described with reference to the accompanying drawings to provide an understanding of the present invention. FIG. 1 is a schematic plan view for explaining a manufacturing process of a laminated core for a stator of an electric motor according to an embodiment of the present invention,
2 is the same perspective view, FIG. 3 is a partially omitted plan view showing the same assembled state, and FIG. 4 is the same perspective view.
【0007】まず、図1〜図3を参照しながら、本発明
の一実施例に係る電動機の固定子用積層鉄心の製造及び
組立工程について説明する。図1にプレス成形によって
形成される磁極鉄心片及びヨーク鉄心片の形成工程を示
す珪素鋼板などからなるストリップ15を示し、(イ)
は多数の磁極を2以上の群(この実施例では4群)に分
け、それぞれの磁極間の隙間を塞ぐように連結部を備え
た磁極鉄心群片16を含む固定子鉄心を製作する工程
を、(ロ)は磁極毎に分割した磁極鉄心片17を含む固
定子鉄心を製作する各工程を示す。First, a manufacturing and assembling process of a laminated core for a stator of an electric motor according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows a strip 15 made of a silicon steel plate or the like showing a process of forming a magnetic pole core piece and a yoke core piece formed by press molding.
Divides a large number of magnetic poles into two or more groups (four groups in this embodiment), and manufactures a stator core including a magnetic pole core group piece 16 having a connecting portion so as to close the gap between the magnetic poles. , (B) show respective steps of manufacturing the stator core including the magnetic pole core pieces 17 divided for each magnetic pole.
【0008】図1(イ)におけるA工程は間欠動作を行
う角抜きパンチが突出していない状況を示し、これによ
って前記各磁極鉄心群片16において磁極間の隙間を塞
ぐ連結部18が最終的に形成されるが、図1(ロ)にお
けるA工程は8個のパンチ19が突出して角孔を形成し
最終的に磁極毎に分割した磁極鉄心片17が形成され
る。なお、該パンチ19は同一円周上に配列されている
が、2個づつ群を成している。The step A in FIG. 1 (a) shows a situation in which the punching punches for the intermittent operation do not project, whereby the connecting portions 18 for closing the gaps between the magnetic poles in the magnetic pole iron core group pieces 16 are finally made. Although formed, in step A in FIG. 1B, eight punches 19 project to form square holes, and finally the magnetic pole core pieces 17 divided for each magnetic pole are formed. The punches 19 are arranged on the same circumference, but two punches 19 form a group.
【0009】この後、プレス成形によって両側外形、ス
ロット等が打ち抜かれ、カシメ用突起が形成された前記
ストリップ15は、B工程でパンチ20によって磁極鉄
心群片16間または磁極鉄心片17間に4個の間隙21
をC工程に示すように形成する。そして、D工程に示す
ようにパンチ22によって外側のヨーク鉄心片23aと
の間に分割線22aを形成し、磁極鉄心群片16または
磁極鉄心片17を打抜き、下部の金型の一例である図示
しないブランクダイに抜き込むようになっている。After that, the strip 15 on which both outer shapes, slots and the like are punched out by press molding and the caulking projections are formed, the strip 15 is punched by a punch 20 between the magnetic pole core group pieces 16 or between the magnetic pole core pieces 17 by a punch 20. Gap 21
Are formed as shown in step C. Then, as shown in the step D, a dividing line 22a is formed between the yoke 22 and the outer yoke core piece 23a by the punch 22, and the magnetic pole core group piece 16 or the magnetic pole core piece 17 is punched out, which is an example of a lower die. Do not insert into a blank die.
【0010】従って、本発明の一実施例に係る電動機の
固定子用積層鉄心23を製造する場合には、まず、図1
(イ)に示す工程によって、パンチ19を使用しないで
連結部18を形成し、同時にそれぞれ3磁極を有する4
枚の前記磁極鉄心群片16を製造し、前記ブランクダイ
内に抜き込む。前記ブランクダイにはブランクホルダー
を備えた回転機構が設けられ、放射状に等配列した磁極
角度に相当する角度(α度とする)毎に回転できるよう
になっているので、図2に示すように最下部の磁極鉄心
群片16がブランクダイに抜き込まれるとα度円周方向
に回転し、2番目の磁極鉄心群片16がα度ずれて転積
重合される。このような工程を経て2層の磁極鉄心群片
16が転積重合された後、前記ブランクダイが回転し、
図1の(ロ)に示す工程を経て同時に12枚に分割して
製作された磁極鉄心片17が前記磁極鉄心群片16の上
に転積重合され、以後同一の工程を経て多数の磁極鉄心
片17が転積重合される。Therefore, when manufacturing the laminated core 23 for a stator of an electric motor according to an embodiment of the present invention, first, referring to FIG.
By the process shown in (a), the connecting portion 18 is formed without using the punch 19, and at the same time, the connecting portion 18 has three magnetic poles.
A piece of the magnetic pole core group piece 16 is manufactured, and is pulled into the blank die. Since the blank die is provided with a rotating mechanism having a blank holder and can rotate at every angle (α degrees) corresponding to the magnetic pole angles that are radially uniformly arranged, as shown in FIG. When the lowermost magnetic pole core group piece 16 is pulled out into the blank die, it rotates in the circumferential direction by α degrees, and the second magnetic pole core group piece 16 is shifted by α degrees and transposed and polymerized. After the two layers of magnetic pole core group pieces 16 are transposed and polymerized through such steps, the blank die is rotated,
A magnetic pole core piece 17 manufactured by dividing into 12 pieces at the same time through the step shown in FIG. 1B is transposition-polymerized on the magnetic pole core group piece 16, and thereafter a plurality of magnetic pole cores are subjected to the same step. Piece 17 is transposition polymerized.
【0011】そして、上部から3枚目の鉄心となる磁極
鉄心片17を転積重合した後、再度図1(イ)に示す各
工程によって製作された磁極鉄心群片16を転積重合さ
れた磁極鉄心片17の上に積層し、更に前記ブランクダ
イが円周方向にα度回転して、最上部の磁極鉄心群片1
7を転積重合し、これによって全体が一体化された積層
磁極鉄心部24が製作されることになる。なお、前記転
積重合された磁極鉄心片17によって磁極間に隙間を有
する主磁極部25を形成し、上下のそれぞれ2層の磁極
鉄心群片16によって連結磁極鉄心部26、27を形成
することになり、それぞれの磁極鉄心群片16及び磁極
鉄心片17は磁極の中央に形成された図示しないカシメ
用突起によって強固に連結結合されている。従って、仮
にストリップ15に板厚の偏差があっても、全体が転積
重合されるので、板厚のバラツキが均等化される。Then, after the magnetic pole core piece 17 which is the third iron core from the top is transposed and polymerized, the magnetic pole core group piece 16 manufactured by the respective steps shown in FIG. The magnetic pole core piece 17 is laminated on the magnetic pole core piece 17, and the blank die is further rotated by .alpha.
7 is transposed and polymerized, whereby a laminated magnetic pole core portion 24 which is wholly integrated is manufactured. It should be noted that a main magnetic pole portion 25 having a gap between magnetic poles is formed by the magnetic pole core pieces 17 that have been transposed and polymerized, and connecting magnetic pole core portions 26, 27 are formed by the upper and lower two-layer magnetic pole core group pieces 16. The magnetic pole core group pieces 16 and the magnetic pole core pieces 17 are firmly connected and coupled by a caulking projection (not shown) formed in the center of the magnetic pole. Therefore, even if the strip 15 has a deviation in plate thickness, the whole is transposed and polymerized, so that the variations in plate thickness are equalized.
【0012】一方、前記磁極鉄心群片16、磁極鉄心片
17が打ち抜かれたストリップ15は、図1のE工程、
F工程を経て、パンチ28によって打ち抜かれてヨーク
鉄心片23aが形成される。このヨーク鉄心片23aを
順次積層重合または転積重合して図4(B)に示すよう
に積層ヨーク鉄心部29を形成する。この積層ヨーク鉄
心部29には前記磁極の数に対応して装着溝30が形成
されているが、該装着溝30は図3に示すように例えば
中拡がりのアリ溝となって、図4(A)に示す前記積層
磁極鉄心部24の外側部がそれぞれ軸方向から圧入でき
るようになっている。図4(C)にはこれらが組上がっ
た電動機の固定子用積層鉄心23を示すが、図4(A)
の状態で挿入される巻線は図示されていない。前記実施
例は、磁極数が12で分割群数は4群であったが、本発
明は磁極数に限定されず、更には分割群数によっても限
定されない。On the other hand, the strip 15 in which the magnetic pole iron core group piece 16 and the magnetic pole iron core piece 17 are punched out is formed by the step E in FIG.
After the F step, punching is performed by the punch 28 to form the yoke core piece 23a. The yoke core pieces 23a are sequentially laminated or transposed to form a laminated yoke core portion 29 as shown in FIG. Mounting grooves 30 are formed in the laminated yoke iron core portion 29 so as to correspond to the number of the magnetic poles. The mounting grooves 30 are, for example, medium expanding dovetail grooves as shown in FIG. The outer side portions of the laminated magnetic pole core portion 24 shown in A) can be press-fitted in the axial direction. FIG. 4 (C) shows a laminated iron core 23 for a stator of an electric motor, which is assembled as shown in FIG. 4 (A).
The windings inserted in this state are not shown. Although the number of magnetic poles is 12 and the number of divided groups is 4 in the above-described embodiment, the present invention is not limited to the number of magnetic poles, and is not limited by the number of divided groups.
【0013】[0013]
【発明の効果】請求項第1項及び第2項記載の電動機の
固定子用積層鉄心及びその製造方法は以上の説明からも
明らかなように、積層磁極鉄心部の主磁極部は磁極毎に
分割されているが、上下の連結磁極鉄心部によって連結
されて一体となっているので、特別な治具を必要とせ
ず、鉄心にコイルを装着することができ、設備を簡略化
することができると共に、作業効率を向上することがで
きる。また、連結磁極鉄心部を構成する磁極鉄心群片及
び主磁極部を構成する磁極鉄心片は、金型内で転積重合
されているので、仮にストッリップに板厚の偏差があっ
ても、組み立てられた積層磁極鉄心部は各偏差が均等化
して厚みの偏差がなく、しかも積み重ねられた鉄心に傾
きを生じないので、積層ヨーク鉄心部への圧入も支障な
く行え、品質の良い電動機の固定子用積層鉄心を製造で
きる。更には、磁極鉄心片間の全てに間隙を形成するに
際して、予め前記間隙に相当する領域を間欠的に打ち抜
くようにしているので、プレス工程が減少し、設備費が
削減される。As is apparent from the above description, the laminated iron core for a stator of an electric motor and the manufacturing method thereof according to the first and second aspects of the present invention are as follows. Although it is divided, it is connected by the upper and lower connecting magnetic pole iron cores and is integrated, so a coil can be mounted on the iron core without requiring a special jig, and the equipment can be simplified. At the same time, work efficiency can be improved. Further, since the magnetic pole core group pieces that form the connecting magnetic pole core section and the magnetic pole core pieces that form the main magnetic pole section are transposition-polymerized in the mold, even if the strips have deviations in plate thickness, they can be assembled. Since the deviations of the laminated magnetic pole cores are equalized and there is no deviation in thickness, and the stacked iron cores do not tilt, press-fitting into the laminated yoke cores can be performed without any problems, and a stator of a high-quality motor Can manufacture laminated cores for automobiles. Furthermore, when forming the gaps between all the magnetic pole core pieces, the regions corresponding to the gaps are punched out in advance intermittently, so that the pressing process is reduced and the equipment cost is reduced.
【図1】本発明の一実施例に係る電動機の固定子用積層
鉄心の製造工程を示す平面図である。FIG. 1 is a plan view showing a manufacturing process of a laminated core for a stator of an electric motor according to an embodiment of the present invention.
【図2】同斜視図である。FIG. 2 is a perspective view of the same.
【図3】組上がった状態の積層磁極鉄心部の一部省略平
面図である。FIG. 3 is a partially omitted plan view of a laminated magnetic pole core portion in an assembled state.
【図4】前記電動機の固定子用積層鉄心の製造工程を示
す斜視図である。FIG. 4 is a perspective view showing a manufacturing process of a laminated core for a stator of the electric motor.
【図5】従来例に係る電動機の固定子鉄心の斜視図であ
る。FIG. 5 is a perspective view of a stator core of an electric motor according to a conventional example.
15 ストリップ 16 磁極鉄心群片 17 磁極鉄心片 18 連結部 19 パンチ 20 パンチ 21 間隙 22 パンチ 22a 分割線 23 電動機の固定子用積層鉄心 23a ヨーク鉄心片 24 積層磁極鉄心部 25 主磁極部 26 連結磁極鉄心部 27 連結磁極鉄心部 28 パンチ 29 積層ヨーク鉄心部 30 装着溝 15 strips 16 Magnetic pole core group pieces 17 Magnetic pole piece 18 Connection 19 punch 20 punches 21 Gap 22 punch 22a dividing line 23 Laminated iron core for stator of electric motor 23a yoke core piece 24 Laminated magnetic pole core 25 Main magnetic pole 26 Connection magnetic pole core 27 Connection magnetic pole core 28 punches 29 Laminated yoke core 30 mounting groove
Claims (2)
列される多数の磁極鉄心片と該磁極鉄心片に対応して内
側に装着溝を備えたヨーク鉄心片とを、それぞれの鉄心
片に配したカシメ用突起を用いて順次積層重合してなる
分割形成された積層ヨーク鉄心部と積層磁極鉄心部とを
有してなる電動機の固定子用積層鉄心であって、前記積
層磁極鉄心部は、磁極毎に分割された多数枚の磁極鉄心
片を順次転積重合し、各磁極間に間隙を形成するように
放射状に等配列された主磁極部と、前記主磁極部の上下
にそれぞれ固着され、前記多数の磁極を2以上の群に分
け、それぞれの群に属する磁極間の隙間を塞ぐように連
結部を備えた磁極鉄心群片を形成し、この磁極鉄心群片
を相互に円周方向に転積重合した連結磁極鉄心部とから
なることを特徴とする電動機の固定子用積層鉄心。1. A plurality of magnetic pole core pieces radially and equally arranged along the inner circumference of a stator core, and a yoke core piece having a mounting groove inside corresponding to the magnetic pole core pieces. A laminated core for a stator of an electric motor, comprising a laminated yoke core portion and a laminated magnetic pole core portion, which are divided and formed by sequentially laminating and superposing using caulking protrusions arranged on one side, said laminated magnetic pole core The part is formed by successively transposing and superposing a large number of magnetic pole core pieces divided for each magnetic pole, and the main magnetic pole parts are arranged in a radial pattern so as to form a gap between the magnetic poles, and the main magnetic pole parts are formed above and below the main magnetic pole part. The plurality of magnetic poles, which are fixed to each other, are divided into two or more groups, and a magnetic pole core group piece having a connecting portion is formed so as to close a gap between the magnetic poles belonging to each group, and the magnetic pole core group pieces are mutually connected. It is characterized in that it is composed of a coupled magnetic pole iron core part which is transposed and laminated in the circumferential direction. Laminated iron core for electric motor stators.
列された多数の磁極鉄心片と、該磁極鉄心片を装着する
溝を備えたヨーク鉄心片を打抜き形成し、それぞれの鉄
心片に配したカシメ用突起を用いて金型内に順次積層重
合して、積層磁極鉄心部と積層ヨーク鉄心部とに分割積
層する工程を備えた電動機の固定子用積層鉄心の製造方
法において、前記多数の磁極鉄心片間の全てに間隙を形
成するに際して、予め、前記間隙に相当する領域を間欠
的に打抜き形成する工程と、前記多数の磁極鉄心片間の
少なくとも2つの間隙を除く、他の磁極鉄心片間の間隙
を塞ぐ連結部を残すようにエアギャップを打抜き、磁極
鉄心群片を形成する工程と、前記磁極鉄心群片を少なく
とも2枚を順次前記金型内に転積重合して連結磁極鉄心
部を形成し、該連結磁極鉄心部の上にそれぞれ分割され
た磁極鉄心片を順次転積重合した主磁極部を打抜き形成
し、更にその上に前記磁極鉄心群片と同一形状の磁極鉄
心群片の少なくとも2枚を順次転積重合した連結磁極鉄
心部を打ち込み形成して積層磁極鉄心部を形成する工程
とを有することを特徴とする電動機の固定子用積層鉄心
の製造方法。2. A yoke core piece having a large number of magnetic pole core pieces radially arranged uniformly along the inner circumference of a stator core and a groove for mounting the magnetic pole core pieces, which are punched to form each core piece. In the method for manufacturing a laminated iron core for a stator of an electric motor, which comprises sequentially laminating and polymerizing in a mold using a caulking protrusion arranged in, a laminated magnetic pole core portion and a laminated yoke iron core portion being divided and laminated, When forming the gaps between all of the multiple magnetic pole core pieces, a step of intermittently punching out a region corresponding to the gaps, and other than removing at least two gaps between the multiple magnetic pole core pieces A step of punching out an air gap so as to leave a connecting portion that closes the gap between the magnetic pole core pieces to form a magnetic pole core group piece, and at least two of the magnetic pole core group pieces are sequentially transposed and polymerized in the mold. Forming a connecting magnetic pole core, A main magnetic pole portion obtained by sequentially transposing and superposing the divided magnetic pole core pieces on the magnetic pole core portion is punched to form at least two magnetic pole core group pieces having the same shape as the magnetic pole core group piece. A step of forming a laminated magnetic pole core portion by stamping and forming the transposed and stacked coupled magnetic pole core portions, and a method of manufacturing a laminated core for a stator of an electric motor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3182907A JP2556776B2 (en) | 1991-06-26 | 1991-06-26 | Manufacturing method of laminated core for stator of electric motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3182907A JP2556776B2 (en) | 1991-06-26 | 1991-06-26 | Manufacturing method of laminated core for stator of electric motor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH053648A true JPH053648A (en) | 1993-01-08 |
JP2556776B2 JP2556776B2 (en) | 1996-11-20 |
Family
ID=16126468
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3182907A Expired - Fee Related JP2556776B2 (en) | 1991-06-26 | 1991-06-26 | Manufacturing method of laminated core for stator of electric motor |
Country Status (1)
Country | Link |
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JP (1) | JP2556776B2 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0538105A (en) * | 1991-07-26 | 1993-02-12 | Mitsui High Tec Inc | Manufacture of laminated iron core for stator of motor, and laminated mold device therefor |
EP0652622A3 (en) * | 1993-11-08 | 1998-08-26 | Mitsubishi Denki Kabushiki Kaisha | Rotary motor and production method thereof, and laminated core and production method thereof |
WO2000017986A1 (en) * | 1998-09-18 | 2000-03-30 | Siemens Aktiengesellschaft | Electric motor |
US6917134B2 (en) | 2000-02-25 | 2005-07-12 | Hitachi, Ltd. | Vehicle use ac generator |
WO2009069463A1 (en) * | 2007-11-26 | 2009-06-04 | Mitsui High-Tec, Inc. | Laminated stator core, and manufacturing method therefor |
US8161625B2 (en) | 2007-11-22 | 2012-04-24 | Mitsubishi Electric Corporation | Method of manufacturing a rotating electric machine |
US8205320B2 (en) | 2007-11-22 | 2012-06-26 | Mitsubishi Electric Corporation | Method of manufacturing a rotating electric machine |
US8677608B2 (en) | 2008-07-24 | 2014-03-25 | Mitsubishi Electric Corporation | Method for manufacturing iron core and apparatus for manufacturing iron core |
CN108781004A (en) * | 2016-03-24 | 2018-11-09 | 三菱电机株式会社 | The manufacturing method of electric rotating machine, electric power-assisted steering apparatus and electric rotating machine |
Citations (3)
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---|---|---|---|---|
JPS54152103A (en) * | 1978-05-23 | 1979-11-30 | Fuji Electric Co Ltd | Lamination of stator core of revolving armature |
JPH033636A (en) * | 1989-05-30 | 1991-01-09 | Toshiba Corp | Manufacture of stator core |
JPH03174479A (en) * | 1989-09-05 | 1991-07-29 | E I Du Pont De Nemours & Co | Coating compound based on water |
-
1991
- 1991-06-26 JP JP3182907A patent/JP2556776B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54152103A (en) * | 1978-05-23 | 1979-11-30 | Fuji Electric Co Ltd | Lamination of stator core of revolving armature |
JPH033636A (en) * | 1989-05-30 | 1991-01-09 | Toshiba Corp | Manufacture of stator core |
JPH03174479A (en) * | 1989-09-05 | 1991-07-29 | E I Du Pont De Nemours & Co | Coating compound based on water |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6362553B1 (en) | 1989-11-08 | 2002-03-26 | Mitsubishi Denki Kabushiki Kaisha | Rotary motor and production method thereof, and laminated core production method thereof |
JPH0538105A (en) * | 1991-07-26 | 1993-02-12 | Mitsui High Tec Inc | Manufacture of laminated iron core for stator of motor, and laminated mold device therefor |
EP0652622A3 (en) * | 1993-11-08 | 1998-08-26 | Mitsubishi Denki Kabushiki Kaisha | Rotary motor and production method thereof, and laminated core and production method thereof |
US6167610B1 (en) | 1993-11-08 | 2001-01-02 | Mitsubishi Denki Kabushiki Kaisha | Method of making a rotary motor |
WO2000017986A1 (en) * | 1998-09-18 | 2000-03-30 | Siemens Aktiengesellschaft | Electric motor |
US6483221B1 (en) | 1998-09-18 | 2002-11-19 | Siemens Aktiengesellschaft | Electric motor |
US6917134B2 (en) | 2000-02-25 | 2005-07-12 | Hitachi, Ltd. | Vehicle use ac generator |
US8161625B2 (en) | 2007-11-22 | 2012-04-24 | Mitsubishi Electric Corporation | Method of manufacturing a rotating electric machine |
US8205320B2 (en) | 2007-11-22 | 2012-06-26 | Mitsubishi Electric Corporation | Method of manufacturing a rotating electric machine |
WO2009069463A1 (en) * | 2007-11-26 | 2009-06-04 | Mitsui High-Tec, Inc. | Laminated stator core, and manufacturing method therefor |
JP4467640B2 (en) * | 2007-11-26 | 2010-05-26 | 株式会社三井ハイテック | Manufacturing method of stator laminated iron core |
JPWO2009069463A1 (en) * | 2007-11-26 | 2011-04-14 | 株式会社三井ハイテック | Manufacturing method of stator laminated iron core |
US8193681B2 (en) | 2007-11-26 | 2012-06-05 | Mitsui High-Tec, Inc. | Laminated stator core and method for manufacturing the same |
US8677608B2 (en) | 2008-07-24 | 2014-03-25 | Mitsubishi Electric Corporation | Method for manufacturing iron core and apparatus for manufacturing iron core |
CN108781004A (en) * | 2016-03-24 | 2018-11-09 | 三菱电机株式会社 | The manufacturing method of electric rotating machine, electric power-assisted steering apparatus and electric rotating machine |
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