JP2013115969A - Laminated iron core and method of manufacturing the same - Google Patents

Laminated iron core and method of manufacturing the same Download PDF

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JP2013115969A
JP2013115969A JP2011261386A JP2011261386A JP2013115969A JP 2013115969 A JP2013115969 A JP 2013115969A JP 2011261386 A JP2011261386 A JP 2011261386A JP 2011261386 A JP2011261386 A JP 2011261386A JP 2013115969 A JP2013115969 A JP 2013115969A
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cut
iron core
raised
core
raised pieces
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JP5893904B2 (en
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Toyonobu Yamada
豊信 山田
Takao Hirano
恭男 平野
Katsumi Kinoshita
克己 木下
Katsuyuki Matsumura
勝幸 松村
Hiroshi Horai
浩 宝来
Toru Yamagiwa
徹 山際
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Toshiba Industrial Products and Systems Corp
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Toshiba Industrial Products Manufacturing Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a laminated iron core that can eliminate deviation and a gap between iron core blanking plates and securely binding the iron core blanking plates by a caulking part to improve reliability, and a method of manufacturing the same.SOLUTION: A laminated iron core is formed by fitting caulking parts of a plurality of iron core blanking plates obtained by punching an iron core steel plate to each other to laminate the plurality of iron core blanking plates. The caulking parts are a plurality of cut and raised pieces formed by cutting and raising the iron core steel plate or the iron core blanking plates. The plurality of cut and raised pieces of the one iron core blanking plate are fitted into openings formed by the cutting and raising of the plurality of cut and raised pieces of the other iron core blanking plate, and the plurality of cut and raised pieces are formed so that the cut and raised pieces adjacent to each other in one of the iron core blanking plates are opposed to each other to form a pair.

Description

本発明の実施形態は、積層鉄心及びその製造方法に関する。   Embodiments described herein relate generally to a laminated core and a method for manufacturing the same.

回転電機の固定子鉄心や回転子鉄心は、鉄心用鋼板を打ち抜くことにより得られる複数枚の鉄心抜板を、夫々に形成されたかしめ部相互間で嵌合させて積層した略円筒状の積層鉄心から構成される。   Stator cores and rotor cores of rotating electrical machines are generally cylindrical stacks in which a plurality of core punches obtained by punching steel sheets for cores are fitted and stacked between the formed caulked portions. Consists of iron core.

ここで、図１６（ａ）は、従来のかしめ部２の一例を拡大縦断面図で示している。かしめ部２は鉄心抜板１において同図中、下方へ窪む台形の如き凹状をなし、その両端側の傾斜部２ａと平坦部２ｂとからなる。このかしめ部２を、他の鉄心抜板１のかしめ部２と嵌合させて積層した場合、他の鉄心抜板１との間に板厚が加算されることにより傾斜部２ａで干渉して隙間Ｓが発生する（図１６（ｂ）参照）。このように、夫々の鉄心抜板間に隙間が存在すると軸方向寸法たる積厚寸法が所定寸法より相当大きくなり、積層鉄心の精度を低下させる問題がある。   Here, FIG. 16A shows an example of a conventional caulking portion 2 in an enlarged vertical sectional view. The caulking portion 2 has a concave shape such as a trapezoid that is recessed downward in the drawing of the iron core punch 1 and is composed of inclined portions 2a and flat portions 2b on both ends thereof. When this caulking portion 2 is fitted and laminated with the caulking portion 2 of another iron core punch 1, interference occurs at the inclined portion 2 a due to the addition of the plate thickness between the other iron core punch plates 1. A gap S is generated (see FIG. 16B). As described above, when there is a gap between the respective core punched plates, the thickness dimension as the axial dimension becomes considerably larger than the predetermined dimension, and there is a problem that the accuracy of the laminated core is lowered.

そこで、他の従来のかしめ部４では、図１７（ａ）に示すように鉄心抜板３に対する切り起こしにより基端側の傾斜部４ａと先端側の平坦部４ｂとを形成したものがある。この鉄心抜板３を積層した場合、かしめ部４相互間で片側の傾斜部４ａに寄り沿うようにして嵌合するため、順次積層される鉄心抜板３に周方向のずれが生じることとなる。つまり、このかしめ部４の構成では、積層鉄心にスキューを与えることはできるが、軸線方向（図１７（ｂ）で上下方向）に対するずれの角度θが０となるように積層することは困難である。このように、従来のものでは、鉄心抜板相互間のずれや密着性に劣る問題があり、かしめ部強度たる結束力についてもバラつきが生じることとなる。   Therefore, another conventional caulking portion 4 includes a base-side inclined portion 4a and a distal-side flat portion 4b formed by cutting and raising the iron core punching plate 3 as shown in FIG. When the core punching plates 3 are stacked, they are fitted so as to be close to the inclined portion 4a on one side between the caulking portions 4, so that the core punching plates 3 that are sequentially stacked are displaced in the circumferential direction. . That is, in the structure of the caulking portion 4, it is possible to give a skew to the laminated iron core, but it is difficult to laminate so that the deviation angle θ with respect to the axial direction (vertical direction in FIG. 17B) becomes zero. is there. Thus, in the conventional one, there is a problem that the gap between the iron core punching plates and the adhesiveness are inferior, and the binding force that is the strength of the caulking portion also varies.

特開２００２−１４１２３８号公報JP 2002-141238 A

そこで、鉄心抜板相互間のずれや隙間を解消することができると共にかしめ部で確実に結束して信頼性を高めることができる積層鉄心及びその製造方法を提供することである。   Accordingly, it is an object of the present invention to provide a laminated core and a method for manufacturing the same, which can eliminate the gaps and gaps between the core punched plates and can be reliably bound by the caulking portion to improve the reliability.

本実施形態の積層鉄心は、鉄心用鋼板を打ち抜くことにより得られる複数枚の鉄心抜板を、当該鉄心抜板に有するかしめ部相互間で嵌合させて積層したものであり、
前記かしめ部は、前記鉄心用鋼板あるいは前記鉄心抜板に対する切り起しにより形成した複数の切起し片であって、一方の鉄心抜板における前記複数の切起し片が、他方の鉄心抜板における前記複数の切起し片の切起し跡の開口から嵌合するように構成すると共に、前記複数の切起し片は、一枚の前記鉄心抜板において相互に隣り合う切起し片同士が対向して対をなすように形成されていることを特徴とする。 The laminated iron core of the present embodiment is obtained by stacking a plurality of iron core punched plates obtained by punching a steel sheet for iron core, and fitting them between the caulking portions of the iron core punched plates,
The caulking portion is a plurality of cut and raised pieces formed by cutting and raising the steel core steel plate or the iron core punched plate, and the plurality of cut and raised pieces on one iron core punched plate are connected to the other iron core punch. The plurality of cut and raised pieces are configured to be fitted from openings of cut and raised marks on the plate, and the plurality of cut and raised pieces are cut and raised adjacent to each other in one iron core punched plate. It is characterized in that the pieces are formed to face each other and make a pair.

また、本実施形態の積層鉄心の製造方法は、切り起しにより形成される複数の切起し片を有する鉄心抜板を複数枚積層してなる積層鉄心の製造方法であって、
鉄心用鋼板に対し成形ポンチを用いて前記複数の切起し片を切り起すかしめ部形成工程と、前記鉄心用鋼板から鉄心抜板を打ち抜く打抜き工程と、前記複数の切起し片を、先に打ち抜いた鉄心抜板における前記複数の切起し片の切起し跡の開口から嵌合させ、押込みポンチを用いて押し込むことによりかしめて積層する積層工程とからなり、前記かしめ部形成工程では、前記鉄心用鋼板において前記鉄心抜板に相当する鉄心抜板相当部分で相互に隣り合う前記切起し片同士が対向して対をなすように形成される。 Further, the method for manufacturing a laminated core according to the present embodiment is a method for producing a laminated core in which a plurality of core punched plates having a plurality of cut and raised pieces formed by cutting and raising are laminated.
A caulking part forming step of cutting and raising the plurality of cut and raised pieces using a forming punch with respect to the steel sheet for iron core, a punching step of punching an iron core punch from the steel sheet for iron core, and the plurality of cut and raised pieces, The caulking portion forming step comprises a laminating step of fitting through the openings of the cut and raised pieces of the plurality of cut and raised pieces in the punched steel core punched first, and laminating by pushing using a push punch. Then, in the steel sheet for iron core, the cut and raised pieces adjacent to each other at the portion corresponding to the iron core punching plate corresponding to the iron core punching plate are formed to face each other and make a pair.

第１実施形態の固定子鉄心について相互に隣り合う一対のかしめ部を並べて示す拡大縦断面図An enlarged vertical sectional view showing a pair of caulking portions adjacent to each other for the stator core of the first embodiment. 固定子鉄心の外観斜視図External perspective view of stator core 打抜き板の製造工程を示す図Diagram showing punched plate manufacturing process かしめ部形成工程におけるポンチの先端形状及びかしめ部の構成を示す図The figure which shows the front-end | tip shape of a punch in the caulking part formation process, and the structure of a caulking part 積層工程を説明するための図Diagram for explaining the lamination process 第２実施形態を示す図５相当図FIG. 5 equivalent view showing the second embodiment 第３実施形態を示す図４相当図FIG. 4 equivalent view showing the third embodiment 第４実施形態を示す図４相当図FIG. 4 equivalent view showing the fourth embodiment 第５実施形態を示す図２相当図FIG. 2 equivalent diagram showing the fifth embodiment 第６実施形態を示す図２相当図FIG. 2 equivalent view showing the sixth embodiment （ａ）及び（ｂ）は、押込みポンチと外径抜きポンチの正面図及び側面図、（ｃ）はダイ内における鉄心抜板間の隙間を誇張して示す模式図(A) And (b) is a front view and side view of an indentation punch and an outer diameter punching punch, and (c) is a schematic diagram exaggeratingly showing a gap between core punched plates in a die. 第７実施形態を示す図５（ａ）相当図FIG. 5 (a) equivalent diagram showing the seventh embodiment 第８実施形態の切起し片の斜視図The perspective view of the cut-and-raised piece of 8th Embodiment 切起し片におけるスプリングバックの説明図Explanatory drawing of spring back in cut and raised piece 図５（ａ）相当図Fig. 5 (a) equivalent diagram （ａ）は従来のかしめ部の拡大縦断面図、（ｂ）は図１（ａ）（ｂ）相当図(A) is an enlarged longitudinal sectional view of a conventional caulking portion, and (b) is a view corresponding to FIGS. 1 (a) and (b). （ａ）は他の従来のかしめ部の拡大縦断面図、（ｂ）は図１（ａ）（ｂ）相当図(A) is an enlarged longitudinal sectional view of another conventional caulking portion, and (b) is a view corresponding to FIGS. 1 (a) and 1 (b).

＜第１実施形態＞
以下、インナーロータ型の電動機（回転電機）の固定子に用いられる固定子鉄心に適用した第１実施形態について、図１から図５を参照して説明する。
図２に示す固定子鉄心１１は、内周側に図示しない回転子が配置される空間が形成された略円筒状をなす。固定子鉄心１１の内周部には、巻線を収容するためのスロット１２が周方向に等間隔に複数個形成されている。固定子鉄心１１は、後述する固定用の耳部１３を有し、当該耳部１３に挿通される図示しないボルトにより前記電動機の筺体内に固定される。固定子鉄心１１は、鉄心抜板１５を複数枚積層した積層鉄心である。この固定子鉄心１１の製造方法の詳細は後述する。 <First Embodiment>
Hereinafter, a first embodiment applied to a stator core used for a stator of an inner rotor type electric motor (rotary electric machine) will be described with reference to FIGS. 1 to 5.
The stator core 11 shown in FIG. 2 has a substantially cylindrical shape in which a space in which a rotor (not shown) is disposed is formed on the inner peripheral side. A plurality of slots 12 for accommodating windings are formed at equal intervals in the circumferential direction on the inner peripheral portion of the stator core 11. The stator core 11 has a fixing ear portion 13 to be described later, and is fixed in the housing of the electric motor by a bolt (not shown) inserted through the ear portion 13. The stator iron core 11 is a laminated iron core in which a plurality of iron core punches 15 are laminated. Details of the method of manufacturing the stator core 11 will be described later.

鉄心抜板１５は、例えば図３に示す電磁鋼板１９を打ち抜くことにより形成したものであり、円環状のヨーク部１６と、その内周部に位置する前記スロット１２と、ヨーク部１６の外周部に位置する耳部１３と、ヨーク部１６に形成されたかしめ部としての切起し片２０，２１とを備える（図２における最上層の鉄心抜板１５参照）。耳部１３は、ヨーク部１６外周から径方向外側へ張出す円弧状をなす。この場合、耳部１３は、ヨーク部１６の周方向に等間隔をなして複数個（例えば１２０度間隔で３個）設けられている。耳部１３の中心部には、前記ボルトが挿通される貫通孔としてのボルト用孔１３ａが形成されている。   The iron core punch 15 is formed, for example, by punching out an electromagnetic steel plate 19 shown in FIG. 3, and has an annular yoke portion 16, the slot 12 positioned on the inner peripheral portion thereof, and the outer peripheral portion of the yoke portion 16. And the cut-and-raised pieces 20 and 21 as the caulking portions formed in the yoke portion 16 (see the uppermost iron core punch 15 in FIG. 2). The ear portion 13 has an arc shape projecting outward from the outer periphery of the yoke portion 16 in the radial direction. In this case, a plurality of ear portions 13 are provided at regular intervals in the circumferential direction of the yoke portion 16 (for example, three at intervals of 120 degrees). A bolt hole 13 a as a through hole through which the bolt is inserted is formed at the center of the ear 13.

前記切起し片２０，２１は、電磁鋼板１９（鉄心抜板１５）に対する切り起しにより対をなすように設けられている。即ち、切起し片２０，２１は、一枚の鉄心抜板１５において２ｎ個（ｎは整数（対数））設けられており、一対の切起し片２０，２１を、例えばヨーク部１６の周方向において耳部１３を挟む位置に夫々設けた環状配置とされている。また、これら６個の切起し片２０，２１は、周方向に相互に隣り合う当該切起し片２０，２１同士が対向して対をなすように形成される。ここで、図４（ａ）は図３のIVａ−IVａに沿う一方の切起し片２０部分、図４（ｂ）は図３のIVｂ−IVｂに沿う他方の切起し片２１部分の縦断面図である。尚、図３では説明の便宜上、各切起し片２０，２１を大きめに誇張して示している。   The cut and raised pieces 20 and 21 are provided so as to form a pair by cutting and raising the electromagnetic steel plate 19 (iron core punched plate 15). That is, 2n pieces (n is an integer (logarithm)) are provided in one iron core punch 15 and the pair of cut and raised pieces 20 and 21 are connected to, for example, the yoke 16. It is set as the annular arrangement | positioning provided in the position which pinches | interposes the ear | edge part 13 in the circumferential direction, respectively. The six cut-and-raised pieces 20 and 21 are formed such that the cut-and-raised pieces 20 and 21 adjacent to each other in the circumferential direction are opposed to each other. Here, FIG. 4A is a longitudinal section of one cut and raised piece 20 along IVa-IVa in FIG. 3, and FIG. 4B is a longitudinal section of the other cut and raised piece 21 along IVb-IVb in FIG. FIG. In FIG. 3, for the sake of convenience of explanation, the cut and raised pieces 20 and 21 are exaggerated to be larger.

切起し片２０，２１は、板厚方向つまり固定子鉄心１１の軸方向から見て帯状をなすと共に、その板厚ｔ１の分、当該軸方向へ窪む凹状に形成されている。このうち、図４（ａ）に示す切起し片２０は、基端部側が鉄心抜板１５（ヨーク部１６）に対して傾斜した傾斜部２０ａとされ、先端部側が鉄心抜板１５に対して平行な平坦部２０ｂとされている。また、切起し片２０は、傾斜部２０ａと平坦部２０ｂとの間の屈曲部が基端寄りであることから、全体として扁平な舌形状をなす。ここで、切起し片２０の先端部２０ｃは、図４（ａ）で右方、つまり他方の切起し片２１を指向するように形成されている。同図に示す符号２０ｚは、当該切起し片２０の切り起しにより形成された切り起こし跡の開口である。当該開口２０ｚには、次に積層される鉄心抜板１５の切起し片２０が上側から挿入されて嵌合するようになっている。   The cut and raised pieces 20 and 21 have a band shape when viewed from the plate thickness direction, that is, the axial direction of the stator core 11, and are formed in a concave shape that is recessed in the axial direction by the plate thickness t1. Among these, the cut-and-raised piece 20 shown in FIG. 4A has an inclined portion 20a whose base end portion is inclined with respect to the iron core punch 15 (yoke portion 16), and its tip end side with respect to the iron core punch 15. Parallel flat portions 20b. Further, the cut and raised piece 20 has a flat tongue shape as a whole because the bent portion between the inclined portion 20a and the flat portion 20b is closer to the proximal end. Here, the front end 20c of the cut and raised piece 20 is formed so as to be directed to the right side, that is, the other cut and raised piece 21 in FIG. Reference numeral 20z shown in the figure is an opening of a cut and raised mark formed by cutting and raising the cut and raised piece 20. A cut-and-raised piece 20 of the iron core punch 15 to be laminated next is inserted into the opening 20z from above and fitted.

他方の切起し片２１は、図３に示す中心点Ｏから放射状に延びる仮想線Ｌ１を対称軸として一方の切起し片２０と線対称となる形状に形成されている。従って、図３、図４（ａ）（ｂ）の対比から明らかなように、切起し片２１の傾斜部２１ａ及び平坦部２１ｂは、切起し片２１の傾斜部２１ａ及び平坦部２１ｂと対称的に構成され、これら切起し片２０，２１の先端部２０ｃ，２１ｃ同士がヨーク部１６の周方向に向かい合う。他の２箇所の耳部１３に夫々対応する一対の切起し片２０，２１についても、図３の仮想線Ｌ２，Ｌ３を夫々挟むようにして相互に対向するように設けられている。   The other cut-and-raised piece 21 is formed in a shape that is line-symmetric with one of the cut-and-raised pieces 20 with a virtual line L1 extending radially from the center point O shown in FIG. Therefore, as is clear from the comparison between FIG. 3 and FIGS. 4A and 4B, the inclined portion 21a and the flat portion 21b of the cut and raised piece 21 are the same as the inclined portion 21a and the flat portion 21b of the cut and raised piece 21, respectively. The tip portions 20 c and 21 c of the cut and raised pieces 20 and 21 face each other in the circumferential direction of the yoke portion 16. The pair of cut-and-raised pieces 20 and 21 respectively corresponding to the other two ear portions 13 are also provided so as to face each other so as to sandwich the virtual lines L2 and L3 in FIG.

続いて、鉄心抜板１５、及び積層鉄心たる固定子鉄心１１の製造方法について説明する。図３は、鉄心抜板１５の各製造ステップにおける前記鋼板１９の平面図を示している。尚、図示は省略するが、当該製造工程の設備として、各種の打抜き形状等に対応した打抜き刃乃至ポンチを有する複数の金型を備えたプレス装置が用いられる。   Then, the manufacturing method of the iron core punching board 15 and the stator core 11 which is a laminated iron core is demonstrated. FIG. 3 shows a plan view of the steel plate 19 in each manufacturing step of the iron core punch 15. In addition, although illustration is abbreviate | omitted, the press apparatus provided with the some metal mold | die which has the punching blade thru | or punch corresponding to various punching shapes etc. as an apparatus of the said manufacturing process is used.

先ず、第１ステーションＳ１の打抜き工程では、ロール状の鋼板１９の巻回を解き、鋼板１９の両側部に、プレス装置における鋼板１９の位置決めに供される案内孔２２を打ち抜き形成する。また、鋼板１９に対して、円周上３箇所に等配される耳部相当部（耳部１３が形成される部分）にボルト用孔１３ａを形成すると共に、回転子鉄心用の磁石挿入孔２３や当該回転子の磁路を調整する孔等、複数の孔を形成する。次の第２ステーションＳ２の打抜き工程では、第１ステーションＳ１での打抜き工程を経た鋼板１９に対し、スロット１２と回転子鉄心用のシャフト挿入孔２４とが打ち抜き形成される。   First, in the punching process of the first station S1, the roll-shaped steel plate 19 is unwound, and guide holes 22 used for positioning of the steel plate 19 in the press device are punched and formed on both sides of the steel plate 19. In addition, bolt holes 13a are formed in ear equivalent portions (parts where the ear portions 13 are formed) equally distributed at three locations on the circumference of the steel plate 19, and magnet insertion holes for the rotor core are formed. And a plurality of holes such as holes for adjusting the magnetic path of the rotor. In the next punching process of the second station S2, the slot 12 and the shaft insertion hole 24 for the rotor core are punched and formed in the steel plate 19 that has undergone the punching process in the first station S1.

そして、第３ステーションＳ３の打抜き及びかしめ部形成工程では、回転子鉄心用の鉄心抜板を図示しない環状の外径抜きポンチとダイで打ち抜くと共に、その周りの鉄心抜板１５相当部分で前記切起し片２０，２１を図４に示す成形ポンチ２６，２７により切り起こす。詳細には図４（ａ）に示すように、成形ポンチ２６の先端部には、切起し片２０の形状に対応する傾斜面２６ａと平坦面２６ｂを備える一方、前記ダイには、前記傾斜面２６ａに対応する傾斜面を備える。これら成形ポンチ２６及びダイは、切起し片２０の屈曲部における屈曲点Ｐ１とＰ２、Ｐ３とＰ４を板厚方向で夫々揃えるようにして、切起し片２０の上面２０Ｕの形状と下面２０Ｄの形状を一致させるプレス加工を行うように構成されている。また、この場合、成形ポンチ２６及びダイは、切起し片２０について傾斜部２０ａの板厚ｔ２を、本来の板厚ｔ１つまり鋼板１９或は平坦部２０ｂの板厚よりも小さくなるように加圧形成する（ｔ２＜ｔ１）。このとき、プレス成形に伴う切起し片２０（特に傾斜部２０ａ）の延びは、金型における材料の逃げ場として切起し片２０自身の形状つまり自由端部２０ｃにより担保されている。このため、当該金型内において、傾斜部２０ａがうねるように変形することを防止することができる。   Then, in the punching and caulking portion forming process of the third station S3, the core punching plate for the rotor core is punched with an unillustrated annular punch having an outer diameter and a die, and the above-mentioned cutting is performed at a portion corresponding to the core punching plate 15 around it. The raised pieces 20 and 21 are cut and raised by the forming punches 26 and 27 shown in FIG. Specifically, as shown in FIG. 4A, the tip of the forming punch 26 is provided with an inclined surface 26a and a flat surface 26b corresponding to the shape of the cut and raised piece 20, while the die has the inclined surface. An inclined surface corresponding to the surface 26a is provided. The molding punch 26 and the die are formed so that the bending points P1 and P2 and P3 and P4 in the bent portion of the cut and raised piece 20 are aligned in the plate thickness direction, and the shape of the upper surface 20U and the lower surface 20D of the cut and raised piece 20 are set. It is comprised so that the press work which makes the shape of this may correspond. Further, in this case, the forming punch 26 and the die add the plate thickness t2 of the inclined portion 20a to the cut and raised piece 20 so as to be smaller than the original plate thickness t1, that is, the plate thickness of the steel plate 19 or the flat portion 20b. Pressure is formed (t2 <t1). At this time, the extension of the cut-and-raised piece 20 (particularly the inclined portion 20a) accompanying the press molding is secured by the shape of the cut-and-raised piece 20 itself, that is, the free end 20c, as a refuge for the material in the mold. For this reason, in the said metal mold | die, it can prevent that the inclined part 20a deform | transforms so that it may swell.

他方の切起し片２１は、図４（ｂ）に示す成形ポンチ２７により、上記した一方の切起し片２０と同時に形成される。第３ステーションＳ３における６個の成形ポンチ２６，２７は、相互に隣り合う成形ポンチ２６，２７間で前記仮想線Ｌ１〜Ｌ３を夫々挟むようにして周方向に対称的に配置されている。従って、切起し片２１は、前述のように周方向に隣り合う切起し片２０と対向するように形成される。また、切起し片２１は、切起し片２０と同様に成形ポンチ２７の傾斜面２７ａ及び平坦面２７ｂ並びに前記ダイによって、その上面２１Ｕの形状と下面２１Ｄの形状が一致するようにプレス成形される。   The other cut-and-raised piece 21 is formed simultaneously with the one cut-and-raised piece 20 as described above by the forming punch 27 shown in FIG. The six forming punches 26 and 27 in the third station S3 are symmetrically arranged in the circumferential direction so as to sandwich the virtual lines L1 to L3 between the forming punches 26 and 27 adjacent to each other. Therefore, the cut and raised pieces 21 are formed so as to face the cut and raised pieces 20 adjacent in the circumferential direction as described above. Similarly to the cut and raised piece 20, the cut and raised piece 21 is press-molded so that the shape of the upper surface 21U and the shape of the lower surface 21D are matched by the inclined surface 27a and the flat surface 27b of the forming punch 27 and the die. Is done.

その後、第４ステーションＳ４の最終打抜き工程において、鋼板１９を図示しない環状の外径抜きポンチとダイとで打ち抜いて円形状の鉄心抜板１５を形成すると共に、その鉄心抜板１５を順次積層する積層工程が行われる。この場合、図５に示すように、先に打ち抜かれた鉄心抜板１５の切り起こし跡の開口２０ｚ、２１ｚに、上側から積層される鉄心抜板１５の切起し片２０，２１を臨ませた状態で押込みポンチ２６´，２７´により押し込むようにしてかしめて積層する。これにより、複数枚の鉄心抜板１５を相互に密着させて積層し、固定子鉄心１１を形成する。尚、詳しくは後述するように、第４ステーションＳ４の前記外径抜きポンチ（図１１の符号５０参照）と押込みポンチ２６´，２７´とは一体的に構成されているが、図５では説明の便宜上、外径抜きポンチを省略している。   Thereafter, in the final punching step of the fourth station S4, the steel sheet 19 is punched with an annular outer diameter punching punch (not shown) and a die to form a circular core punching plate 15, and the core punching plates 15 are sequentially laminated. A lamination process is performed. In this case, as shown in FIG. 5, the cut-and-raised pieces 20 and 21 of the iron core punch 15 stacked from above are exposed to the openings 20z and 21z of the cut-and-raised mark of the iron core punch 15 punched first. In this state, they are laminated by caulking so as to be pushed in by pushing punches 26 'and 27'. As a result, a plurality of core punching plates 15 are stacked in close contact with each other to form the stator core 11. As will be described in detail later, the outer diameter punch (see reference numeral 50 in FIG. 11) and the push-in punches 26 'and 27' of the fourth station S4 are integrally configured. For convenience, the outer diameter punch is omitted.

押込みポンチ２６´，２７´は、例えば第３ステーションＳ３における成形ポンチ２６，２７と同じ形状で且つ同じ配置形態とされている。また、第３ステーションＳ３で、切起し片２０，２１を、その上面２０Ｕ，２１Ｕの形状と下面２０Ｄ、２１Ｄの形状とが一致するように形成した。このため、押込みポンチ２６´，２７´で切起し片２０，２１を上方から下方へ押し込む際、下側の鉄心抜板１５の開口２０ｚ，２１ｚに正確に嵌合させ、精度よく積層することができる。また、切起し片２０，２１が対向して対をなすように形成されているため、複数枚の鉄心抜板１５は周方向にずれが生じないように積層されることとなる（図１、図２参照）。   The pushing punches 26 ′ and 27 ′ have, for example, the same shape and the same arrangement as the forming punches 26 and 27 in the third station S 3. Further, at the third station S3, the cut and raised pieces 20, 21 are formed so that the shapes of the upper surfaces 20U, 21U and the shapes of the lower surfaces 20D, 21D coincide. For this reason, when pushing and raising the pieces 20 and 21 downward from the upper punches 26 ′ and 27 ′, they are accurately fitted into the openings 20 z and 21 z of the lower iron core punch 15, and are laminated with high accuracy. Can do. Further, since the cut and raised pieces 20 and 21 are formed so as to face each other, the plurality of core punching plates 15 are stacked so as not to be displaced in the circumferential direction (FIG. 1). FIG. 2).

積層された複数枚（例えば２００枚）の鉄心抜板１５は、図２に示すように当該積層鉄心の外周縁部において板厚方向たる軸方向に溶接が施される。この溶接部位２９は、鉄心抜板１５の外周縁部において、例えば各耳部１３から周方向へ３０度離間した位置に夫々形成されることで等間隔（６０度間隔）となる。これにより、複数枚の鉄心抜板１５が一体となった固定子鉄心１１が得られる。尚、鉄心抜板１５の積層数、耳部１３或は溶接部位２９の数は、適宜変更してもよい。   A plurality of (for example, 200) laminated core punches 15 are welded in the axial direction corresponding to the plate thickness direction at the outer peripheral edge of the laminated core as shown in FIG. The welded portions 29 are formed at equal intervals (60-degree intervals) by being formed, for example, at positions 30 degrees apart from the respective ear portions 13 in the circumferential direction on the outer peripheral edge portion of the iron core punching plate 15. As a result, a stator core 11 in which a plurality of core punches 15 are integrated is obtained. In addition, you may change suitably the number of lamination | stacking of the iron core punching board 15, the number of the ear | edge parts 13, or the welding site | parts 29. FIG.

図示は省略するが、第３ステーションＳ３で打ち抜いた回転子鉄心用の鉄心抜板を複数枚積層して一体にすることで回転子鉄心が得られる。この回転子鉄心の磁石挿入孔２３に永久磁石を設け、シャフト挿入孔２４にシャフトを設けることにより回転子が得られる。さらに、固定子鉄心１１のスロット１２にコイルを設けることにより、固定子が得られる。そして、回転子と、固定子とから回転電機が得られる。   Although illustration is omitted, a rotor core can be obtained by stacking and integrating a plurality of core punches for the rotor core punched out at the third station S3. A rotor can be obtained by providing a permanent magnet in the magnet insertion hole 23 of the rotor core and providing a shaft in the shaft insertion hole 24. Furthermore, a stator is obtained by providing a coil in the slot 12 of the stator core 11. And a rotary electric machine is obtained from a rotor and a stator.

以上説明したように、本実施形態の切起し片２０，２１は、一枚の鉄心抜板１５において相互に隣り合う切起し片２０，２１同士が対向して対をなすように形成されている。このため、前記積層工程において、プレス装置の鋼板１９の送り精度や鉄心抜板１５のたわみ等に起因して、鉄心抜板１５間で切起し片２０，２１に僅かなずれが生じて鉄心抜板１５が傾き或は当該鉄心抜板１５をずらすような力（図５中、左右方向の力）が作用したとしても、その力は鉄心抜板１５の両切起し片２０，２１における可撓性により、当該切起し片２０，２１での嵌合に伴い前記のずれが吸収されることで相殺される。即ち、当該切起し片２０，２１は、その鉄心抜板１５の積層に際し、下側の鉄心抜板１５に対する周方向のずれを吸収すると共に、当該周方向の位置決めを行うように機能する。このため、鉄心抜板１５相互間にずれが生じないように切起し片２０，２１にて嵌合させることができ、鉄心抜板１５相互間に隙間が生じないように積層して所望の密着性を得ることができる。従って、かしめ部たる切起し片２０，２１で確実に結束して信頼性を高めることができると共に、固定子鉄心１１の寸法精度を向上させることができる。   As described above, the cut and raised pieces 20 and 21 of the present embodiment are formed such that the cut and raised pieces 20 and 21 that are adjacent to each other in one iron core punching plate 15 face each other and form a pair. ing. For this reason, in the laminating step, due to the feeding accuracy of the steel plate 19 of the press device, the deflection of the core punch 15 and the like, the cores 15 are cut and raised between the core punches 15 to cause slight deviations in the pieces 20 and 21. Even if the punching plate 15 is tilted or a force that shifts the iron core punching plate 15 (the force in the left-right direction in FIG. 5) is applied, the force is exerted on the two raised parts 20 and 21 of the iron core punching plate 15. Due to the flexibility, the deviation is absorbed by the fitting with the cut-and-raised pieces 20 and 21 to be offset. That is, the cut-and-raised pieces 20 and 21 function to absorb the shift in the circumferential direction with respect to the lower core punch 15 and to perform the positioning in the circumferential direction when the core punch 15 is stacked. For this reason, it can be cut and raised so that there is no deviation between the iron core punches 15 and can be fitted with the pieces 20, 21 and laminated so that there is no gap between the iron core punches 15 and desired. Adhesion can be obtained. Therefore, it is possible to reliably bind the cut and raised pieces 20 and 21 that are the caulking portions to improve the reliability, and to improve the dimensional accuracy of the stator core 11.

尚、前記溶接部位２９は溶接の際、溶融して凝固することに伴い、その近傍部における局所的な熱歪や残留応力が生じるだけでなく、鉄心抜板全体に熱歪の影響を及ぼすこともある。この点、切起し片２０，２１は、溶接部位２９から周方向に離間した位置に設けたため、その熱歪等の直接的な影響を回避することができると共に、鉄心抜板１５の全体的な僅かな熱歪も切起し片２０，２１の可撓性により吸収することができる。   The welded portion 29 melts and solidifies at the time of welding, so that not only local thermal strain and residual stress are generated in the vicinity thereof, but also the entire core punched plate has the effect of thermal strain. There is also. In this respect, since the cut and raised pieces 20 and 21 are provided at positions spaced apart from the welded portion 29 in the circumferential direction, a direct influence such as thermal distortion can be avoided, and the entire core blank 15 can be avoided. Even a slight thermal strain can be cut up and absorbed by the flexibility of the pieces 20 and 21.

一枚の鉄心抜板１５における６個の切起し片２０，２１は、対をなす切起し片２０，２１の先端部２０ｃ，２１ｃ同士が鉄心抜板１５の周方向に向かい合う。これによれば、切起し片２０，２１によって、鉄心抜板１５相互間における周方向のずれを確実に抑制することができる。従って、鉄心抜板１５相互間で、スロット１２や耳部１３等の周方向のずれが抑制され、より積層鉄心の精度を高めることができる。   The six cut-and-raised pieces 20 and 21 in one iron core punch 15 are such that the tip portions 20c and 21c of the cut and raised pieces 20 and 21 that make a pair face each other in the circumferential direction of the iron core punch 15. According to this, the cut-and-raised pieces 20 and 21 can reliably suppress the circumferential shift between the core punched plates 15. Accordingly, the circumferential displacement of the slots 12 and the ears 13 and the like is suppressed between the core punched plates 15, and the accuracy of the laminated core can be further increased.

各切起し片２０，２１は、基端部側が鉄心抜板１５に対して傾斜した傾斜部２０ａ，２１ａと、先端部側が鉄心抜板１５に対して平行な平坦部２０ｂ，２１ｂとからなる。これによれば、比較的簡単な金型構造（成形ポンチ２６，２７）で切起し片２０，２１を形成することができ、成形精度を高めることができる。
鉄心抜板１５の周縁部に、ボルト用孔１３ａを有して径方向に張出す耳部１３を設け、複数の切起し片２０，２１は、鉄心抜板１５の周方向において耳部１３に対応する位置に設けた。これによれば、固定子鉄心１１の固定に供される耳部１３近傍を、鉄心抜板１５がばらけないように切起し片２０，２１部分のかしめ作用により強固に結束することができる。 Each of the cut and raised pieces 20 and 21 includes inclined portions 20a and 21a whose base end side is inclined with respect to the core punching plate 15, and flat portions 20b and 21b whose tip end side is parallel to the core punching plate 15. . According to this, it is possible to form the cut pieces 20 and 21 with a relatively simple mold structure (molding punches 26 and 27), and to improve the molding accuracy.
The peripheral part of the iron core punch 15 is provided with an ear part 13 having a bolt hole 13 a and projecting in the radial direction, and the plurality of cut and raised pieces 20, 21 are ear parts 13 in the circumferential direction of the iron core punch 15. It was provided at a position corresponding to. According to this, the vicinity of the ear portion 13 used for fixing the stator core 11 can be cut up and tightly bound by the caulking action of the pieces 20 and 21 so that the core punching plate 15 does not come apart. .

切起し片２０，２１は、傾斜部２０ａ，２１ａの板厚ｔ２を本来の板厚ｔ１よりも小さくなるように加圧形成し、上面２０Ｕの形状と下面２０Ｄの形状を一致させるように構成した。換言すれば、切起し片２０，２１は、傾斜部２０ａ，２１ａの板厚ｔ２を鉄心抜板１５の板厚ｔ１よりも小さく設定することにより、上面２０Ｕの形状と下面２０Ｄの形状とが積層鉄心の軸方向に揃うように構成されている。これにより、積層した鉄心抜板１５間に軸方向と直交する方向のずれや前述した隙間Ｓの発生を防止することができ、高精度の積層鉄心とすることができる。   The cut-and-raised pieces 20 and 21 are configured to press and form the plate thickness t2 of the inclined portions 20a and 21a to be smaller than the original plate thickness t1, and to match the shape of the upper surface 20U and the shape of the lower surface 20D. did. In other words, the cut and raised pieces 20 and 21 have the shape of the upper surface 20U and the shape of the lower surface 20D by setting the plate thickness t2 of the inclined portions 20a and 21a to be smaller than the plate thickness t1 of the core punching plate 15. It is comprised so that it may align with the axial direction of a laminated iron core. Thereby, the shift | offset | difference of the direction orthogonal to an axial direction between the laminated core punching plates 15 and generation | occurrence | production of the clearance gap S mentioned above can be prevented, and it can be set as a highly accurate laminated iron core.

従来技術の例で述べたかしめ部２は、自由端部が存在しない単なる凹状をなすことから、プレス成形の際に成形型内における傾斜部２ａの材料の逃げ場がなく、その加圧成形に伴い傾斜部２ａがうねるように変形することとなる。この点、本実施形態の切起し片２０，２１は、その自由端部２０ｃ，２１ｃ側が金型における材料の逃げ場となり、傾斜部２０ａの変形を抑制することができる。このため、鉄心抜板１５間の隙間Ｓの発生を極力防止してより高精度の積層鉄心とすることができる。   The caulking portion 2 described in the example of the prior art has a simple concave shape with no free end portion, so there is no escape space for the material of the inclined portion 2a in the molding die at the time of press molding. It will deform | transform so that the inclination part 2a may wave. In this respect, the cut-and-raised pieces 20 and 21 of the present embodiment have the free end portions 20c and 21c side as a refuge for the material in the mold, and can suppress the deformation of the inclined portion 20a. For this reason, generation | occurrence | production of the clearance gap S between the iron core punching plates 15 can be prevented as much as possible, and it can be set as a highly accurate laminated iron core.

＜その他の実施形態＞
図６〜図１５は、その他の実施形態を示すものであり、既述の部分と同一部分には同一符号を付して説明を省略し、以下異なる点につき説明する。 <Other embodiments>
6 to 15 show other embodiments. The same parts as those already described are denoted by the same reference numerals, description thereof is omitted, and different points will be described below.

図６は、第２実施形態における積層工程を示す図５相当図である。本第２実施形態の積層工程で用いられる押込みポンチ３６，３７は、第１実施形態の押込みポンチ２６´，２７´と以下の点で相違する。即ち、押込みポンチ３６，３７は、切起し片２０，２１の先端部２０ｃ，２１ｃ側に傾斜部２０ｄ，２１ｄを屈曲形成するための傾斜面２６ｄ、２７ｄを有し、全体として先端２６ｂ、２７ｂ側が窄む台形状をなす。従って、積層工程では、切起し片２０，２１は、その中間部（平坦部２０ｂ，２１ｂ）が押込みポンチ３６，３７の先端２６ｂ、２７ｂによりスムーズに押し込まれて、下側の鉄心抜板１５の開口２０ｚ、２１ｚから嵌合する。この場合、切起し片２０，２１は、下側が凸となる台形状（山形状）をなして、下側の鉄心抜板１５における切起し片２０，２１の上面側に滑り込むようにして密着して嵌合する。   FIG. 6 is a view corresponding to FIG. 5 illustrating the stacking process in the second embodiment. The pushing punches 36 and 37 used in the stacking process of the second embodiment are different from the pushing punches 26 'and 27' of the first embodiment in the following points. That is, the push-in punches 36 and 37 have inclined surfaces 26d and 27d for bending the inclined portions 20d and 21d on the side of the tip portions 20c and 21c of the cut and raised pieces 20 and 21, respectively, and the tips 26b and 27b as a whole. It has a trapezoidal shape with its side narrowed. Therefore, in the laminating step, the cut and raised pieces 20 and 21 are smoothly pushed into the intermediate portions (flat portions 20b and 21b) by the leading ends 26b and 27b of the pushing punches 36 and 37, so that the lower iron core 15 Are fitted from the openings 20z and 21z. In this case, the cut-and-raised pieces 20 and 21 have a trapezoidal shape (mountain shape) with a convex lower side so as to slide into the upper surface side of the cut-and-raised pieces 20 and 21 in the lower iron core punch 15. Fit closely together.

以上のように、本第２実施形態では、前記かしめ部形成工程で切り起こした切起し片２０，２１を、積層工程において、台形状の押込みポンチ３６，３７によって当該切起し片２０，２１の平坦部２０ｂ，２１ｂを屈曲させて台形状に形成した。これによれば、比較的小さな成形圧で平坦部２０ｂ，２１ｂを屈曲させて（新たな屈曲部を形成して）、その先端から容易に滑り込ませるようにして積層することができる。また、このように成形ポンチ２６，２７と押込みポンチ３６，３７の形状を異ならせることで、切起し片２０，２１部分の歪を少なくし、かしめ強度を高めて良好な結束状態を得ることができると共に、積層する鉄心抜板１５相互間の密着性を高めることができる。   As described above, in the second embodiment, the cut-and-raised pieces 20 and 21 cut and raised in the caulking portion forming step are formed by the trapezoidal push punches 36 and 37 in the stacking step. 21 flat portions 20b and 21b were bent to form a trapezoidal shape. According to this, the flat portions 20b and 21b can be bent with a relatively small molding pressure (a new bent portion is formed), and can be laminated so as to be easily slid from the tip. In addition, by differentiating the shapes of the forming punches 26 and 27 and the push-in punches 36 and 37 in this way, the distortion of the cut and raised pieces 20 and 21 can be reduced, and the caulking strength can be increased to obtain a good binding state. In addition, the adhesion between the laminated iron cores 15 can be enhanced.

図７は、第３実施形態における切起し片３０，３１の構造を示している。
図示は省略するが、本第３実施形態では、先端部がＶ字状に形成された成形ポンチと押込みポンチが用いられる点で第１実施形態と相違する。即ち、本第３実施形態のかしめ部形成工程でＶ字状の成形ポンチにより、Ｖ字状の切起し片３０，３１が切り起こされる。また、積層工程では、Ｖ字状の押込みポンチが用いられ、切起し片３０，３１の下端部３０ｅ，３１ｅを、下側の鉄心抜板１５における切起し片３０，３１の谷部（上面側）に滑り込ませるようにして嵌合させることができる。尚、成形ポンチや押込みポンチの形状は上記した形状に限らず、例えば先端が円弧状に形成されたポンチを用いて、下側に凸となる円弧状の切起し片を形成するようにしてもよい。 FIG. 7 shows the structure of the cut and raised pieces 30 and 31 in the third embodiment.
Although illustration is omitted, the third embodiment is different from the first embodiment in that a forming punch and a push-in punch each having a V-shaped tip are used. That is, the V-shaped cut and raised pieces 30 and 31 are cut and raised by the V-shaped forming punch in the caulking portion forming process of the third embodiment. Further, in the stacking process, a V-shaped pushing punch is used, and the lower end portions 30e and 31e of the cut and raised pieces 30 and 31 are connected to the valley portions ( It can be fitted so as to be slid into the upper surface side). In addition, the shape of the forming punch or the push-in punch is not limited to the above-described shape, and for example, by using a punch whose tip is formed in an arc shape, an arc-shaped cut and raised piece that protrudes downward is formed. Also good.

図８は、第４実施形態における切起し片４０，４１を成形ポンチ４６，４７と共に示している。
第３ステーションＳ３において、相互に対をなす成形ポンチ４６，４７の先端部には、周方向に向かい合う位置に形成された傾斜面４６ａ，４７ａと、平坦面４６ｂ，４７ｂを備える。この成形ポンチ４６，４７によって、一対の切起し片４０，４１は、その先端部４０ｃ、４１ｃ同士が鉄心抜板１５の周方向に逆を向いて基端側の傾斜部（基端部）４０ａ，４１ａで対向するように切り起こされる。従って、第４実施形態の切起し片４０，４１によっても、鉄心抜板１５相互間における周方向のずれを確実に抑制することができる等、第１実施形態と同様の効果を奏する。 FIG. 8 shows the cut and raised pieces 40 and 41 in the fourth embodiment together with the molding punches 46 and 47.
In the third station S3, the front ends of the forming punches 46 and 47 that are paired with each other are provided with inclined surfaces 46a and 47a and flat surfaces 46b and 47b formed at positions facing each other in the circumferential direction. By the forming punches 46 and 47, the pair of cut-and-raised pieces 40 and 41 have their distal end portions 40c and 41c opposite to each other in the circumferential direction of the iron core punching plate 15 so as to be inclined on the proximal end side (base end portion). 40a and 41a are cut and raised so as to face each other. Therefore, the cut and raised pieces 40 and 41 of the fourth embodiment also have the same effects as those of the first embodiment, such as being able to reliably suppress the circumferential shift between the core punched plates 15.

尚、一対の切起し片について、その先端部同士が互いに逆を向く構成は、上記した台形状、Ｖ字状、円弧状等、各形状の切起し片に適用することができる。例えば、切起し片４０，４１は、その平坦部４０ｂ，４１ｂを押込みポンチ３６，３７により屈曲させて台形状に形成する等、適宜変更してもよい。   In addition, about a pair of cut-and-raised piece, the structure which the front-end | tip parts mutually opposes is applicable to the cut-and-raised piece of each shape, such as above-mentioned trapezoid shape, V shape, circular arc shape. For example, the cut-and-raised pieces 40 and 41 may be appropriately changed such that the flat portions 40b and 41b are bent by the pushing punches 36 and 37 to form a trapezoidal shape.

図９及び図１０は、第５及び第６実施形態における切起し片２０，２１の位置関係を示している。
図９に示すように、第５実施形態の切起し片は、６箇所の溶接部位２９に対応する位置に設けられた合計１２個の切起し片２０，２１から構成される。一対の切起し片２０，２１は、夫々溶接部位２９を挟んでヨーク部１６の周方向に向かい合うように形成されている。この一対の切起し片２０，２１によれば、溶接部位２９の近傍で前述した熱歪や残留応力に起因する鉄心抜板１５相互間の周方向のずれや変形を抑制することができる。 9 and 10 show the positional relationship between the cut and raised pieces 20 and 21 in the fifth and sixth embodiments.
As shown in FIG. 9, the cut and raised pieces of the fifth embodiment are configured by a total of 12 cut and raised pieces 20 and 21 provided at positions corresponding to the six welded portions 29. The pair of cut and raised pieces 20 and 21 are formed so as to face each other in the circumferential direction of the yoke portion 16 with the welded portion 29 interposed therebetween. According to the pair of cut and raised pieces 20 and 21, it is possible to suppress the circumferential shift and deformation between the core punched plates 15 due to the thermal strain and residual stress described above in the vicinity of the welded portion 29.

図１０に示すように、第６実施形態の切起し片は、ヨーク部１６の周方向に例えば９０度間隔で設けられた合計４個の切起し片２０，２１から構成される。これら切起し片２０，２１は、何れも周方向に隣り合う切起し片２０，２１同士が対向して対をなす。即ち、４個の切起し片２０，２１は、対をなす切起し片２０，２１の先端部２０ｃ，２１ｃ同士が鉄心抜板１５の周方向に向かい合い、又は対をなす切起し片２０，２１の先端部２０ｃ，２１ｃ同士が鉄心抜板１５の周方向に逆を向いて基端部（傾斜部２０ａ，２１ａ）側で対向する関係にある。従って、第１実施形態或は第４実施形態と同様、鉄心抜板１５相互間における周方向のずれを抑制することができる。   As shown in FIG. 10, the cut and raised pieces according to the sixth embodiment are configured by a total of four cut and raised pieces 20 and 21 provided at intervals of, for example, 90 degrees in the circumferential direction of the yoke portion 16. These cut and raised pieces 20 and 21 are paired with the cut and raised pieces 20 and 21 adjacent to each other in the circumferential direction facing each other. That is, the four cut-and-raised pieces 20 and 21 are formed as a pair of cut-and-raised pieces 20 and 21 whose front ends 20c and 21c face each other in the circumferential direction of the iron core punching plate 15 or make a pair. The distal end portions 20c, 21c of the 20, 21 are opposite to each other in the circumferential direction of the iron core punch 15 and face each other on the base end portion (inclined portions 20a, 21a) side. Therefore, as in the first embodiment or the fourth embodiment, it is possible to suppress the circumferential shift between the core punched plates 15.

図１１に示すように、上記実施形態における第４ステーションＳ４の外径抜きポンチ５０と押込みポンチ２６´とは一体的に構成されている。他の押込みポンチ２７´，３６，３７も、押込みポンチ２６´と同様、外径抜きポンチ５０と一体に動作する構成であるが、説明の便宜上、図１１では押込みポンチ２６´のみを模式的に例示する。図１１（ｂ）は、図１１（ａ）を押込みポンチ２６´の正面図とした場合における側面図である。   As shown in FIG. 11, the outer diameter punching punch 50 and the pushing punch 26 ′ of the fourth station S <b> 4 in the above embodiment are integrally configured. The other pushing punches 27 ', 36, and 37 are configured to operate integrally with the outer diameter punching punch 50 similarly to the pushing punch 26'. However, for convenience of explanation, only the pushing punch 26 'is schematically shown in FIG. Illustrate. FIG. 11B is a side view when FIG. 11A is a front view of the pushing punch 26 ′.

前述したように、外径抜きポンチ５０とダイ５１とで外径抜きされた鉄心抜板１５は、当該外径抜きポンチ５０及び押込みポンチ２６´，２７´によりダイ５１の下方へ押し込まれる。このとき、鉄心抜板１５は、その外周でダイ５１と当接ないし接触しながら押し込まれることにより外周側から外力を受けて僅かな歪が発生することがある。ここで、図１１（ｃ）に示す下側の鉄心抜板１５は中央側が下方に窪み、全体として凹状をなす場合の歪を誇張して例示している。この場合、積層された鉄心抜板１５，１５に僅かな隙間Ｓａが発生する。   As described above, the iron core punch 15 with the outer diameter removed by the outer diameter punch 50 and the die 51 is pushed downward of the die 51 by the outer diameter punch 50 and the pushing punches 26 ′ and 27 ′. At this time, the iron core punch 15 may be slightly distorted by receiving an external force from the outer peripheral side by being pressed while contacting or contacting the die 51 on the outer periphery. Here, the lower iron core plate 15 shown in FIG. 11C exaggerates the distortion in the case where the center side is depressed downward and has a concave shape as a whole. In this case, a slight gap Sa is generated in the laminated core punches 15 and 15.

そこで、第７実施形態における第４ステーションＳ４の押込みポンチは、第３ステーションＳ３の成形ポンチ２６，２７と同じ配置形態であるが、成形ポンチ２６，２７（或は押込みポンチ２６´，２７´）と形状を異ならせてある。即ち、図１２は、第７実施形態の対をなす押込みポンチのうちの一方を符号５６で示しており、外径抜きポンチ５０に対する押込みポンチ５６の下方への突出量は、押込みポンチ２６´，２７´の下方への突出量よりＨだけ大きく設定されている。また、押込みポンチ５６の幅寸法（図１２中、左右方向の寸法）は、押込みポンチ２６´，２７´の幅寸法よりδだけ小さく設定されている。   Therefore, the pushing punches of the fourth station S4 in the seventh embodiment are in the same arrangement form as the forming punches 26 and 27 of the third station S3, but the forming punches 26 and 27 (or the pushing punches 26 'and 27'). The shape is different. That is, FIG. 12 shows one of the pair of push punches of the seventh embodiment by reference numeral 56, and the downward protrusion amount of the push punch 56 with respect to the outer diameter punch 50 is the push punch 26 ′, It is set larger by H than the downward projecting amount of 27 '. Further, the width dimension of the pushing punch 56 (the dimension in the left-right direction in FIG. 12) is set to be smaller than the width dimension of the pushing punches 26 ′ and 27 ′ by δ.

第７実施形態の押込みポンチ５６及びこれと対をなす他方の押込みポンチ（以下、単に第７実施形態の押込みポンチと記す）によって、第３ステーションＳ３の成形ポンチ２６，２７による切起し片２０，２１の切り起こし量（鉄心抜板１５の板厚方向の押し込み量）より、更に切起し片２０，２１を板厚方向へＨだけ押し込むようにして変形させる。つまり、第７実施形態の押込みポンチによる切起し片２０，２１に対する前記板厚方向への押し込み量は、成形ポンチ２６，２７により切起し片２０，２１を切り起すときの前記板厚方向への押し込み量よりも大きくなるように設定されている。   By the pushing punch 56 of the seventh embodiment and the other pushing punch that is paired with the pushing punch 56 (hereinafter simply referred to as the pushing punch of the seventh embodiment), the cut-and-raised piece 20 by the forming punches 26 and 27 of the third station S3. , 21 (the amount of pressing of the core punched plate 15 in the thickness direction) is further deformed by cutting and raising the pieces 20 and 21 by H in the thickness direction. That is, the pushing amount in the plate thickness direction with respect to the cut and raised pieces 20 and 21 by the push punch of the seventh embodiment is the plate thickness direction when the cut and raised pieces 20 and 21 are cut and raised by the forming punches 26 and 27. It is set to be larger than the pushing amount.

よって、第４ステーションＳ４のダイ５１内で鉄心抜板１５に前記歪が発生した場合でも、第７実施形態の押込みポンチによって、鉄心抜板１５の切起し片２０，２１を、下側の鉄心抜板１５における切起し片２０，２１上に密着するように重畳して確実に嵌合させる充分な押し込み量を得ることができる。これにより、切起し片２０，２１部分で確実にかしめて密着性を高めることができると共に、そのかしめ作用による結束力を一層向上させることができる。   Therefore, even when the distortion occurs in the iron core punch 15 in the die 51 of the fourth station S4, the cut-and-raised pieces 20, 21 of the iron core punch 15 are moved downward by the push punch of the seventh embodiment. It is possible to obtain a sufficient push-in amount that is overlapped and securely fitted onto the cut and raised pieces 20 and 21 in the iron core punch 15. As a result, it is possible to reliably caulk the raised and cut pieces 20 and 21 to improve the adhesion, and to further improve the binding force due to the caulking action.

第７実施形態の押込みポンチは、切起し片２０，２１の長さ寸法（図１２中、左右方向の寸法）に応じて前記δを変更する等、適宜変更することができる。
上記した切起し片を形成する際、当該切起し片は成形時の加圧力を解除することにより僅かにスプリングバックが生じる。図１４は、切起し片１００のスプリングバックを２点鎖線で誇張して示す説明図である。ここで、図１４（ａ）に示す切起し片１００の屈曲部１００ａ部分と、（ｂ）に示すその途中の屈曲部１００ｂ部分とが相互に同じ形状の構成の下、同じ条件で加工するものと仮定した場合、両屈曲部１００ａ，１００ｂにおける夫々の戻り角度θ１，θ２は一致する（θ１＝θ２）。もっとも、実際のスプリングバックは、図１４（ａ）では切起し片１００の基端部で発生する一方、（ｂ）ではその途中部で発生することから、合成された戻り角度は（ｃ）に示すθ３となる（θ１＞θ２）。 The pushing punch according to the seventh embodiment can be appropriately changed, for example, by changing the δ according to the length dimension of the cut and raised pieces 20 and 21 (the dimension in the left-right direction in FIG. 12).
When the cut and raised pieces are formed, the cut and raised pieces are slightly spring-backed by releasing the pressure applied during molding. FIG. 14 is an explanatory view showing the spring back of the cut-and-raised piece 100 exaggerated by a two-dot chain line. Here, the bent portion 100a portion of the cut and raised piece 100 shown in FIG. 14A and the bent portion 100b portion in the middle thereof shown in FIG. 14B are processed under the same conditions under the same configuration. When it is assumed that the return angles θ1 and θ2 of the bent portions 100a and 100b coincide with each other (θ1 = θ2). However, the actual spring back is generated at the base end portion of the cut and raised piece 100 in FIG. 14A, and is generated at the middle portion in FIG. 14B, so that the combined return angle is (c). (Θ1> θ2).

そこで、図１３、図１５に示す第８実施形態における切起し片６０は、基端側の内側曲げ半径Ｒ１よりも途中部の内側曲げ半径Ｒ２を充分に大きく設定することで（Ｒ１＜Ｒ２）、全体として下方へ傾斜するように構成されている。即ち、第３ステーションＳ３のかしめ部形成工程における前記成形ポンチとダイは、例えば切起し片６０の各屈曲部に対応する夫々の角部が、基端側の曲げ半径Ｒ１と途中部の曲げ半径Ｒ２とに対応させた形状（角Ｒ）とされている。ここで、当該成形ポンチとダイによって、切起し片６０の両屈曲部分（Ｒ１，Ｒ２の部分）における加工時の曲げ角度が同じ条件に設定されていても、曲げ半径Ｒ２を大きくすることで、スプリングバック量も両屈曲部分のち曲げ半径Ｒ２に対応する屈曲部分の方が大きくなる。これにより、第８実施形態の切起し片６０における基端側の第１傾斜部６０ａと先端側の第２傾斜部６０ｂとのうち、第２傾斜部６０ｂは、上記した曲げ半径Ｒ２とスプリングバック量との関係を利用して先端が下方へ傾斜するように構成されている。鉄心抜板１５に対する第２傾斜部６０ｂの傾斜角θは、第１傾斜部６０ａの傾斜角よりも小さく設定されている。図１３、図１５では、第８実施形態の対をなす切起し片のうちの一方を示しており、図１３では、夫々の傾斜部６０ａ、６０ｂの傾斜を誇張して示している。   Accordingly, in the cut and raised piece 60 in the eighth embodiment shown in FIGS. 13 and 15, the inner side bending radius R2 of the middle portion is set to be sufficiently larger than the inner side bending radius R1 (R1 <R2). ), And is configured to incline downward as a whole. That is, the forming punch and the die in the caulking portion forming process of the third station S3 have, for example, respective corners corresponding to the bent portions of the cut and raised pieces 60, the bending radius R1 on the base end side and the bending portion in the middle. The shape (corner R) corresponds to the radius R2. Here, even if the bending angle at the time of processing in both bent portions (the portions of R1 and R2) of the cut and raised piece 60 is set to the same condition by the forming punch and the die, the bending radius R2 is increased. The amount of springback is also greater at the bent portion corresponding to the bending radius R2 after both bent portions. Thereby, among the first inclined portion 60a on the proximal end side and the second inclined portion 60b on the distal end side in the cut and raised piece 60 of the eighth embodiment, the second inclined portion 60b includes the bending radius R2 and the spring described above. The tip is inclined downward using the relationship with the back amount. The inclination angle θ of the second inclined part 60b with respect to the iron core punch 15 is set smaller than the inclination angle of the first inclined part 60a. FIGS. 13 and 15 show one of the pair of cut and raised pieces of the eighth embodiment, and FIG. 13 exaggerates the inclination of the inclined portions 60a and 60b.

また、図１５では、対をなす押込みポンチのうちの一方を符号６６で示しており、以下では、一方の押込みポンチ６６或は切起し片６０に着目して説明する。押込みポンチ６６は、その先端部に切起し片６０の第１傾斜部６０ａ及び第２傾斜部６０ｂに夫々対応する第１傾斜面６６ａ及び第２傾斜面６６ｂを備えている。尚、第８実施形態の成形ポンチは、同図の切起し片６０が得られる構成であればよく、上記のように曲げ半径Ｒ１，Ｒ２を設定する他、押込みポンチ６６と同様のものを用いてもよい。   In FIG. 15, one of the paired push punches is denoted by reference numeral 66, and the following description will be made with attention paid to one push punch 66 or the cut and raised piece 60. The push-in punch 66 includes a first inclined surface 66a and a second inclined surface 66b that are cut and raised at the tip portion thereof and correspond to the first inclined portion 60a and the second inclined portion 60b of the piece 60, respectively. The molding punch of the eighth embodiment is not limited as long as the cut-and-raised piece 60 shown in the figure can be obtained. In addition to setting the bending radii R1 and R2 as described above, the molding punch similar to the push-in punch 66 is used. It may be used.

切起し片６０の先端部６０ｃは、基端側よりも剛性が低く図１３中、矢印Ｄ１，Ｄ２方向にも撓みやすい。また、切起し片６０は、先端部６０ｃが鉄心抜板１５の積層方向の最下部となるように傾斜している。従って、前記積層工程において、先に打ち抜かれた下側の鉄心抜板１５の開口２０ｚに対し、次に積層する鉄心抜板１５の切起し片６０が先端部６０ｃから挿入される。このとき、前記の送り精度や切起し片６０の形状に僅かな誤差があったとしても、切起し片６０は、自身の可撓性により先端側の側部６０ｅが下側の開口２０ｚに案内されるようにして接触しながら、先の切起し片６０上に密着するようになじむこととなる。   The distal end portion 60c of the cut and raised piece 60 has lower rigidity than the proximal end side and is easily bent in the directions of arrows D1 and D2 in FIG. Further, the cut-and-raised piece 60 is inclined so that the front end portion 60 c is the lowest portion in the stacking direction of the iron core punching plates 15. Therefore, in the laminating step, the cut-and-raised piece 60 of the core punching plate 15 to be stacked next is inserted from the front end portion 60c into the opening 20z of the lower core punching plate 15 punched first. At this time, even if there is a slight error in the feeding accuracy and the shape of the cut-and-raised piece 60, the cut-and-raised piece 60 has its side portion 60e on the lower opening 20z due to its flexibility. In this way, it is adapted to come into close contact with the cut-and-raised piece 60 while making contact with it.

このように、押込みポンチ６６の先端側に鉄心抜板１５に対する傾斜角θをつけ、切起し片６０は、先端が最下端となるように傾斜している。これにより、先行する鉄心抜板１５の開口２０ｚに、次に積層する鉄心抜板１５の切起し片６０を嵌合するに際して、切起し片６０を確実且つ容易に滑り込ませることができる。従って、積層工程においてスムーズに効率よくかしめることができる。   In this way, the inclination angle θ with respect to the core punching plate 15 is provided on the front end side of the pushing punch 66, and the cut and raised piece 60 is inclined so that the front end is the lowest end. Thereby, when fitting the cut-and-raised piece 60 of the iron core blank 15 to be stacked next into the opening 20z of the preceding iron core blank 15, the cut-and-raised piece 60 can be surely and easily slid. Therefore, it can squeeze smoothly and efficiently in the lamination process.

以上、本発明のいくつかの実施形態を説明したが、これらの実施形態は、例として提示したものであり、発明の範囲を限定することは意図していない。これら新規な実施形態は、その他の様々な形態で実施されることが可能であり、発明の要旨を逸脱しない範囲で、種々の省略，置き換え、変更を行うことができる。これら実施形態やその変形は、発明の範囲や要旨に含まれるとともに、特許請求の範囲に記載された発明とその均等の範囲に含まれる。   As mentioned above, although some embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

例えば、本実施形態の積層鉄心は、固定子用に限らず回転子にも適用する等、種々の変更を行うことができる。   For example, the laminated core of the present embodiment can be variously modified such as not only for the stator but also for the rotor.

図面中、１１は固定子鉄心（積層鉄心）、１５は鉄心抜板、１９は鉄心用鋼板、２０，２１、３０，３１、４０，４１、６０は切起し片（かしめ部）、２０ａ，２１ａ、４０ａ，４１ａは傾斜部（基端部）、２０ｂ，２１ｂ、４０ｂ，４１ｂは平坦部、２０ｃ，２１ｃ、４０ｃ，４１ｃは先端部、２０ｚ，２１ｚは開口、２６，２７、４６，４７は成形ポンチ、２６´，２７´、３６，３７、５６、６６は押込みポンチ示す。   In the drawings, 11 is a stator iron core (laminated iron core), 15 is an iron core punch, 19 is a steel plate for iron core, 20, 21, 30, 31, 40, 41, 60 are cut and raised pieces (caulking portions), 20a, 21a, 40a, 41a are inclined parts (base end parts), 20b, 21b, 40b, 41b are flat parts, 20c, 21c, 40c, 41c are tip parts, 20z, 21z are openings, 26, 27, 46, 47 are Molding punches 26 ', 27', 36, 37, 56 and 66 are push punches.

Claims (10)

鉄心用鋼板を打ち抜くことにより得られる複数枚の鉄心抜板を、各鉄心抜板に有するかしめ部相互間で嵌合させて積層した積層鉄心において、
前記かしめ部は、前記鉄心用鋼板あるいは前記鉄心抜板に対する切り起しにより形成した複数の切起し片であって、一方の鉄心抜板における前記複数の切起し片が、他方の鉄心抜板における前記複数の切起し片の切り起し跡の開口から嵌合するように構成すると共に、
前記複数の切起し片は、一枚の前記鉄心抜板において相互に隣り合う切起し片同士が対向して対をなすように形成されていることを特徴とする積層鉄心。 In a laminated iron core in which a plurality of iron core punches obtained by punching a steel sheet for iron core are fitted and laminated between the caulking portions of each iron core punch,
The caulking portion is a plurality of cut and raised pieces formed by cutting and raising the steel core steel plate or the iron core punched plate, and the plurality of cut and raised pieces on one iron core punched plate are connected to the other iron core punch. While configured to be fitted from the opening of the cut and raised traces of the plurality of cut and raised pieces on the plate,
The laminated core is characterized in that the plurality of cut and raised pieces are formed so that the cut and raised pieces adjacent to each other in one core punched plate face each other and form a pair. 前記複数の切起し片は、対をなす切起し片の先端部同士が前記鉄心抜板の周方向に向かい合い、又は対をなす切起し片の先端部同士が前記鉄心抜板の周方向に逆を向いて基端部側で対向することを特徴とする請求項１記載の積層鉄心。   The plurality of cut and raised pieces have a pair of cut and raised pieces facing each other in the circumferential direction of the iron core blank, or a pair of cut and raised pieces having a pair of cut and raised pieces around the iron core blank. The laminated iron core according to claim 1, wherein the laminated iron core faces in the opposite direction and faces the base end side. 前記切起し片は、基端部側が前記鉄心抜板に対して傾斜した傾斜部と、先端部側が前記鉄心抜板に対して平行な平坦部とからなることを特徴とする請求項１または２記載の積層鉄心。   The cut and raised piece includes an inclined portion whose base end side is inclined with respect to the iron core extraction plate and a flat portion whose distal end side is parallel to the iron core extraction plate. 2. The laminated iron core according to 2. 前記切起し片は、前記傾斜部の板厚を前記鉄心抜板の板厚よりも小さく設定することにより、当該切起し片の上面の形状と下面の形状とが前記積層鉄心の軸方向に揃うように構成されていることを特徴とする請求項３記載の積層鉄心。   The cut and raised pieces are set so that the thickness of the inclined portion is smaller than the thickness of the iron core punched plate so that the shape of the upper surface and the shape of the lower surface of the cut and raised pieces is the axial direction of the laminated core. The laminated iron core according to claim 3, wherein the laminated iron core is configured to be aligned with each other. 前記切起し片は、基端部側と先端部側とが何れも傾斜したＶ字状または台形状をなすことを特徴とする請求項１または２記載の積層鉄心。   3. The laminated core according to claim 1, wherein the cut and raised piece has a V shape or a trapezoidal shape in which a base end side and a tip end side are both inclined. 前記切起し片は、先端が最下端となるように傾斜していることを特徴とする請求項１または２記載の積層鉄心。   The laminated core according to claim 1, wherein the cut and raised piece is inclined so that a tip is a lowermost end. 前記鉄心抜板の周縁部に、ボルト用の貫通孔を有して径方向に張出す耳部を設け、
前記複数の切起し片は、前記鉄心抜板の周方向において前記耳部に対応する位置に設けたことを特徴とする請求項１から６のいずれか一項記載の積層鉄心。 In the peripheral part of the iron core punching plate, an ear part is provided that has a through hole for a bolt and projects in the radial direction,
The laminated core according to any one of claims 1 to 6, wherein the plurality of cut and raised pieces are provided at positions corresponding to the ears in a circumferential direction of the core extraction plate. 切り起しにより形成される複数の切起し片を有する鉄心抜板を複数枚積層してなる積層鉄心の製造方法において、
鉄心用鋼板に対し成形ポンチを用いて前記複数の切起し片を切り起すかしめ部形成工程と、
前記鉄心用鋼板から鉄心抜板を打ち抜く打抜き工程と、
前記複数の切起し片を、先に打ち抜いた鉄心抜板における前記複数の切起し片の切起し跡の開口から嵌合させ、押込みポンチを用いて押し込むことによりかしめて積層する積層工程とからなり、
前記かしめ部形成工程では、前記鉄心用鋼板において前記鉄心抜板に相当する鉄心抜板相当部分で相互に隣り合う前記切起し片同士が対向して対をなすように形成されることを特徴とする積層鉄心の製造方法。 In the manufacturing method of the laminated core formed by laminating a plurality of core punched plates having a plurality of raised and raised pieces formed by cutting and raising,
A caulking part forming step of cutting and raising the plurality of cut and raised pieces using a forming punch with respect to a steel sheet for iron core; and
A punching process of punching an iron core punch from the iron core steel sheet;
A laminating step in which the plurality of cut-and-raised pieces are fitted through the opening of the cut-and-raised portions of the plurality of cut-and-raised pieces in the previously punched iron core plate, and are caulked and stacked using a push-in punch. And consist of
In the caulking portion forming step, the cut and raised pieces adjacent to each other at a portion corresponding to the core extraction plate corresponding to the core extraction plate in the iron core steel plate are formed so as to face each other and make a pair. A method for manufacturing a laminated iron core. 前記かしめ部形成工程において、前記成形ポンチにより基端部側が傾斜した傾斜部と先端部側が平坦な平坦部とからなる切起し片を形成し、
前記積層工程において、Ｖ字状または台形状に形成された前記押込みポンチにより前記切起し片の平坦部を屈曲させて、前記切起し片をＶ字状または台形状に形成することを特徴とする請求項８記載の積層鉄心の製造方法。 In the caulking portion forming step, a cut-and-raised piece formed of an inclined portion whose base end portion side is inclined by the forming punch and a flat portion where the distal end portion side is flat is formed,
In the laminating step, the flat portion of the cut and raised piece is bent by the pushing punch formed in a V shape or a trapezoid shape, and the cut and raised piece is formed in a V shape or a trapezoid shape. A method for producing a laminated core according to claim 8. 前記押込みポンチによる前記複数の切起し片に対する前記鉄心抜板の板厚方向への押し込み量は、前記成形ポンチにより前記複数の切起し片を切り起すときの前記板厚方向への押し込み量よりも大きくなるように設定されていることを特徴とする請求項８記載の積層鉄心の製造方法。   The pushing amount in the plate thickness direction of the core punching plate with respect to the plurality of cut and raised pieces by the pushing punch is the pushing amount in the plate thickness direction when the plurality of cut and raised pieces are cut and raised by the forming punch. The method for producing a laminated core according to claim 8, wherein the method is set so as to be larger than that.
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016149854A (en) * 2015-02-12 2016-08-18 本田技研工業株式会社 Device for correcting skew of stator core, and skew correction method
CN106208566A (en) * 2016-08-31 2016-12-07 天津甘泉集团有限公司 Stator winding makes support
JP2017038453A (en) * 2015-08-07 2017-02-16 株式会社三井ハイテック Laminated core, manufacturing method thereof, and punch for caulk formation used therefor
WO2019066036A1 (en) * 2017-09-29 2019-04-04 アイシン・エィ・ダブリュ株式会社 Production method for core for rotary electric machine
CN110089005A (en) * 2016-12-20 2019-08-02 株式会社电装 The rotor and rotating electric machine of rotating electric machine
WO2020091133A1 (en) * 2018-10-29 2020-05-07 전주대학교산학협력단 Lightweight electric motor core using graphite
CN113452217A (en) * 2020-03-26 2021-09-28 日本电产株式会社 Method for manufacturing rotor for IPM motor

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5914622A (en) * 1982-07-16 1984-01-25 Fuji Electric Co Ltd Laminated iron core for electrical apparatus
JPH0253239U (en) * 1988-10-06 1990-04-17
JPH0711856U (en) * 1993-07-13 1995-02-21 株式会社三井ハイテック Caulking structure of iron core piece
JPH07185695A (en) * 1993-12-28 1995-07-25 Mitsui High Tec Inc Caulking structure of laminated sticking product
JP3046084U (en) * 1997-08-08 1998-02-20 日本磁性材工業株式会社 Caulking structure of laminated fixed product
JPH1080078A (en) * 1996-08-30 1998-03-24 Mitsui High Tec Inc Laminated iron core and its manufacturing method
JPH10262350A (en) * 1997-03-17 1998-09-29 Mitsui High Tec Inc Caulking structure of laminated core
JP2002141238A (en) * 2000-11-01 2002-05-17 Toshiba Industrial Products Manufacturing Corp Laminated core and its manufacturing method
JP2003244872A (en) * 2002-02-18 2003-08-29 Mitsui High Tec Inc Laminated core of heterogeneous material
JP2003289635A (en) * 2002-03-27 2003-10-10 Mitsui High Tec Inc Stacked iron core
JP2006166500A (en) * 2004-12-02 2006-06-22 Mitsui High Tec Inc Laminated iron core and manufacturing method of the same
JP2006223019A (en) * 2005-02-08 2006-08-24 Mitsui High Tec Inc Laminated iron core and manufacturing method therefor
JP2007049842A (en) * 2005-08-11 2007-02-22 Toshiba Kyaria Kk Motor, enclosed compressor, and refrigerating cycle apparatus using the same
JP2007181297A (en) * 2005-12-27 2007-07-12 Mitsui High Tec Inc Method for manufacturing laminated iron core
JP2007228664A (en) * 2006-02-21 2007-09-06 Mitsui High Tec Inc Layered iron core
JP2011067834A (en) * 2009-09-25 2011-04-07 Yazaki Corp Metallic joined body and metal joining device

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5914622A (en) * 1982-07-16 1984-01-25 Fuji Electric Co Ltd Laminated iron core for electrical apparatus
JPH0253239U (en) * 1988-10-06 1990-04-17
JPH0711856U (en) * 1993-07-13 1995-02-21 株式会社三井ハイテック Caulking structure of iron core piece
JPH07185695A (en) * 1993-12-28 1995-07-25 Mitsui High Tec Inc Caulking structure of laminated sticking product
JPH1080078A (en) * 1996-08-30 1998-03-24 Mitsui High Tec Inc Laminated iron core and its manufacturing method
JPH10262350A (en) * 1997-03-17 1998-09-29 Mitsui High Tec Inc Caulking structure of laminated core
JP3046084U (en) * 1997-08-08 1998-02-20 日本磁性材工業株式会社 Caulking structure of laminated fixed product
JP2002141238A (en) * 2000-11-01 2002-05-17 Toshiba Industrial Products Manufacturing Corp Laminated core and its manufacturing method
JP2003244872A (en) * 2002-02-18 2003-08-29 Mitsui High Tec Inc Laminated core of heterogeneous material
JP2003289635A (en) * 2002-03-27 2003-10-10 Mitsui High Tec Inc Stacked iron core
JP2006166500A (en) * 2004-12-02 2006-06-22 Mitsui High Tec Inc Laminated iron core and manufacturing method of the same
JP2006223019A (en) * 2005-02-08 2006-08-24 Mitsui High Tec Inc Laminated iron core and manufacturing method therefor
JP2007049842A (en) * 2005-08-11 2007-02-22 Toshiba Kyaria Kk Motor, enclosed compressor, and refrigerating cycle apparatus using the same
JP2007181297A (en) * 2005-12-27 2007-07-12 Mitsui High Tec Inc Method for manufacturing laminated iron core
JP2007228664A (en) * 2006-02-21 2007-09-06 Mitsui High Tec Inc Layered iron core
JP2011067834A (en) * 2009-09-25 2011-04-07 Yazaki Corp Metallic joined body and metal joining device

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016149854A (en) * 2015-02-12 2016-08-18 本田技研工業株式会社 Device for correcting skew of stator core, and skew correction method
CN105896837A (en) * 2015-02-12 2016-08-24 本田技研工业株式会社 Skew correction device for stator core and skew correction method
CN105896837B (en) * 2015-02-12 2018-10-23 本田技研工业株式会社 The deflection apparatus for correcting and deflection antidote of stator core
JP2017038453A (en) * 2015-08-07 2017-02-16 株式会社三井ハイテック Laminated core, manufacturing method thereof, and punch for caulk formation used therefor
CN106208566A (en) * 2016-08-31 2016-12-07 天津甘泉集团有限公司 Stator winding makes support
CN110089005A (en) * 2016-12-20 2019-08-02 株式会社电装 The rotor and rotating electric machine of rotating electric machine
WO2019066032A1 (en) * 2017-09-29 2019-04-04 アイシン・エィ・ダブリュ株式会社 Production method for core for rotary electric machine
WO2019066036A1 (en) * 2017-09-29 2019-04-04 アイシン・エィ・ダブリュ株式会社 Production method for core for rotary electric machine
CN111095750A (en) * 2017-09-29 2020-05-01 爱信艾达株式会社 Method for manufacturing iron core for rotating electrical machine
JPWO2019066036A1 (en) * 2017-09-29 2020-07-02 アイシン・エィ・ダブリュ株式会社 Method for manufacturing core for rotating electric machine
JPWO2019066032A1 (en) * 2017-09-29 2020-07-02 アイシン・エィ・ダブリュ株式会社 Method for manufacturing core for rotating electric machine
CN111095750B (en) * 2017-09-29 2022-06-28 株式会社爱信 Method for manufacturing core for rotating electrical machine
WO2020091133A1 (en) * 2018-10-29 2020-05-07 전주대학교산학협력단 Lightweight electric motor core using graphite
CN113452217A (en) * 2020-03-26 2021-09-28 日本电产株式会社 Method for manufacturing rotor for IPM motor
EP3886302A1 (en) * 2020-03-26 2021-09-29 Nidec Corporation Method of manufacturing rotor for ipm motor

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