JP5338190B2 - Manufacturing apparatus and manufacturing method of laminated iron core - Google Patents

Manufacturing apparatus and manufacturing method of laminated iron core Download PDF

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JP5338190B2
JP5338190B2 JP2008208199A JP2008208199A JP5338190B2 JP 5338190 B2 JP5338190 B2 JP 5338190B2 JP 2008208199 A JP2008208199 A JP 2008208199A JP 2008208199 A JP2008208199 A JP 2008208199A JP 5338190 B2 JP5338190 B2 JP 5338190B2
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core
laminated
die
punching
holder
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JP2010045921A (en
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謙二 金森
和人 上野
正朗 吉留
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Nissan Motor Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus and a method for manufacturing a laminated core excellent in productivity. <P>SOLUTION: In the manufacturing apparatus 20 for the laminated core, a split core piece 2 is sequentially punched out from a work-piece W to be conveyed and a plurality of the split core pieces are annularly arranged to constitute an annular core piece 3, and a plurality of the annular core pieces 3 are laminated while shifting the phases mutually to form the laminated core 1. The laminated core includes iron core grasping sections 30, 45 which rotate each punched split core piece 2 while grasping and holding the piece. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

本発明は、積層鉄心の製造装置および製造方法に関する。   The present invention relates to an apparatus and a method for manufacturing a laminated iron core.

従来より、周方向に複数に分割された板材である円弧状の分割鉄心片を、周方向の繋ぎ目の位相をずらしつつ、いわゆるレンガ積みにする積層鉄心の製造方法が用いられている(例えば、特許文献1参照)。特許文献1の製造方法では、旋回テーブル上で分割鉄心片を環状に仮組みした後、環の外側から内側方向へ力を加えて、分割鉄心片同士を接触させている。
特開2006−223022号公報
Conventionally, a method of manufacturing a laminated core is used in which arc-shaped divided core pieces, which are plates divided into a plurality of parts in the circumferential direction, are so-called brick-stacked while shifting the phase of joints in the circumferential direction (for example, , See Patent Document 1). In the manufacturing method of Patent Document 1, the divided core pieces are temporarily assembled on the turning table in an annular shape, and then the force is applied from the outer side to the inner side to bring the divided core pieces into contact with each other.
JP 2006-223022 A

しかし、特許文献1の製造方法は、外側からのみ力を加えるため、分割鉄心片を環状に仮組みした後でなければ、力を付与できない。したがって、環状となる前の旋回テーブル上の分割鉄心片を保持することが困難である。   However, since the manufacturing method of Patent Document 1 applies force only from the outside, the force cannot be applied unless the divided core pieces are temporarily assembled in an annular shape. Therefore, it is difficult to hold the split core pieces on the turning table before it becomes annular.

本発明は、上記従来技術に伴う課題を解決するためになされたものであり、各々の分割鉄心片を保持しつつ積層することが可能な積層鉄心の製造装置および製造方法を提供することを目的とする。   The present invention has been made to solve the problems associated with the above-described prior art, and an object of the present invention is to provide a manufacturing apparatus and a manufacturing method of a laminated core that can be laminated while holding each divided core piece. And

上記目的を達成する本発明に係る積層鉄心の製造装置は、搬送される被加工板から、環状に複数並ぶことで環状鉄心片を構成する分割鉄心片を順次打ち抜いて環状に並べ、複数の環状鉄心片を位相をずらしつつ積層して積層鉄心とする製造装置である。本製造装置は、鉄心片挟持部を有し、鉄心片挟持部は、打ち抜かれた各々の分割鉄心片を挟んで保持しつつ回転させることができる。鉄心片挟持部は、分割鉄心片の環状鉄心片における内径側を保持する内側挟持部および外径側を保持する外側挟持部を有している。外側挟持部は、分割鉄心片を打ち抜く金型のダイス側の型に回転可能に設けている環形状の部材である。内側挟持部は、外側挟持部に対して金型のポンチ側に、外側挟持部の外径側から内径側へ延在するホルダーに回転可能に保持されて、外側挟持部の内径側に位置している。 A manufacturing apparatus for a laminated core according to the present invention that achieves the above-described object provides a plurality of annular core pieces that are sequentially punched out from a work plate to be conveyed by sequentially punching the divided core pieces constituting the annular core piece. This is a manufacturing apparatus in which iron core pieces are laminated while shifting the phase to form a laminated iron core. This manufacturing apparatus has an iron core piece holding part, and the iron core piece holding part can be rotated while holding and holding each of the punched iron core pieces. The core piece clamping portion has an inner clamping portion that holds the inner diameter side of the annular core piece of the divided core piece and an outer clamping portion that holds the outer diameter side. The outer holding portion is an annular member that is rotatably provided on a die side die of a die for punching out the divided core pieces . The inner clamping part is rotatably held by a holder extending from the outer diameter side of the outer clamping part to the inner diameter side on the punch side of the mold with respect to the outer clamping part, and is positioned on the inner diameter side of the outer clamping part. ing.

上記目的を達成する本発明に係る積層鉄心の製造方法は、搬送される被加工板から、環状に複数並ぶことで環状鉄心片を構成する分割鉄心片を順次打ち抜いて環状に並べ、複数の環状鉄心片を位相をずらしつつ積層して積層鉄心とする製造方法である。本製造方法は、打ち抜かれた各々の分割鉄心片を挟持することが可能な鉄心片挟持部により、分割鉄心片を挟んで保持しつつ回転させて、環状に並べつつ積層する。鉄心片挟持部は、分割鉄心片の環状鉄心片における内径側を保持する内側挟持部および外径側を保持する外側挟持部の間に、分割鉄心片を挟持している。外側挟持部を、分割鉄心片を打ち抜く金型のダイス側の型に回転可能に設けている環形状の部材である。内側挟持部を、外側挟持部に対して金型のポンチ側に、外側挟持部の外径側から内径側へ延在するホルダーに回転可能に保持して、外側挟持部の内径側に配置している。 The manufacturing method of a laminated core according to the present invention that achieves the above-described object provides a plurality of annular cores that are sequentially punched out from a work plate to be conveyed by sequentially punching the divided core pieces constituting the annular core piece by arranging them in a ring. This is a manufacturing method in which iron core pieces are laminated while shifting the phase to form a laminated iron core. In the present manufacturing method, the core pieces are sandwiched and rotated by the core piece holding portions capable of holding the punched pieces of the divided core pieces, and are laminated while being arranged in a ring. The core piece sandwiching part sandwiches the split core piece between the inner sandwiching part that holds the inner diameter side and the outer clamping part that holds the outer diameter side of the annular core piece of the split core piece. This is an annular member in which the outer clamping portion is rotatably provided on a die side die of a die for punching out the divided core pieces . The inner clamping part is disposed on the inner diameter side of the outer clamping part while holding the inner clamping part rotatably on the punch side of the mold with respect to the outer clamping part and by a holder extending from the outer diameter side to the inner diameter side of the outer clamping part. ing.

上記のように構成した本発明に係る積層鉄心の製造装置は、打ち抜かれた分割鉄心片の各々を挟持しつつ回転させる鉄心片挟持部が設けられるため、各々の分割鉄心片を保持しつつ積層することができ、生産性に極めて優れている。   The laminated core manufacturing apparatus according to the present invention configured as described above is provided with a core piece clamping portion that rotates while clamping each of the punched divided core pieces, so that the laminated core pieces are laminated while being held. And is extremely productive.

上記のように構成した本発明に係る積層鉄心の製造方法は、打ち抜かれた分割鉄心片の各々を鉄心片挟持部によって挟持して回転させつつ積層するため、各々の分割鉄心片を保持しつつ積層することができ、生産性に極めて優れている。   In the method for manufacturing a laminated core according to the present invention configured as described above, each of the punched divided core pieces is sandwiched and rotated while being sandwiched by the core piece sandwiching portions, so that each of the divided core pieces is held. It can be laminated and is extremely excellent in productivity.

以下、図面を参照して本発明を実施するための最良の形態を説明する。   The best mode for carrying out the present invention will be described below with reference to the drawings.

<第1実施形態>
図1は、本発明の第1実施形態に係る積層鉄心の製造装置により製造された積層鉄心を示す平面図、図2は、同積層鉄心を示す側面図、図3は、図1のIII−III線に沿う単一層の断面図である。
<First Embodiment>
1 is a plan view showing a laminated iron core manufactured by the laminated iron core manufacturing apparatus according to the first embodiment of the present invention, FIG. 2 is a side view showing the laminated iron core, and FIG. It is sectional drawing of the single layer in alignment with line III.

本実施形態に係る積層鉄心の製造装置により製造される積層鉄心1は、電動機の回転子側に用いられる積層回転子鉄心であり、磁石付き回転子の構成要素である。積層鉄心1は、図1,2に示すように、4つに分割された分割鉄心片2を環状に並べた環状鉄心片3を複数積層して形成されており、各々の分割鉄心片2は、円弧角θが90度で形成される。積層鉄心1の内径側には、例えば2つのキー突起5が形成されるが、かならずしも形成されなくてもよい。   A laminated core 1 manufactured by the laminated core manufacturing apparatus according to the present embodiment is a laminated rotor core used on the rotor side of an electric motor, and is a constituent element of a rotor with magnets. As shown in FIGS. 1 and 2, the laminated core 1 is formed by laminating a plurality of annular core pieces 3 in which the divided core pieces 2 divided into four are arranged in a ring shape. The arc angle θ is 90 degrees. For example, two key protrusions 5 are formed on the inner diameter side of the laminated iron core 1, but it is not always necessary to form them.

各々の分割鉄心片2には、周方向に並ぶ4つの磁石装着孔4が形成されている。それぞれの磁石装着孔4の近傍には、2つのカシメ部6が形成されている。したがって、1つの分割鉄心片2には、8つのカシメ部6が形成される。カシメ部6は、図3に示すように一方面側へ半抜きされて形成されており、一方面側にカシメ凸部7が形成され、他方側にカシメ凹部8が形成される。ここで半抜きとは、不完全に打ち抜いてカシメ凸部7とカシメ凹部8を形成することを意味し、図3のように表裏に貫通せずとも、または部分的に貫通していてもよい。   Each divided core piece 2 has four magnet mounting holes 4 arranged in the circumferential direction. Two caulking portions 6 are formed in the vicinity of each magnet mounting hole 4. Accordingly, eight caulking portions 6 are formed in one divided core piece 2. As shown in FIG. 3, the crimping portion 6 is formed by being half-cut to one side, the crimping projection 7 is formed on one side, and the crimping recess 8 is formed on the other side. Here, the half punching means that the crimping convex portion 7 and the crimping concave portion 8 are formed by incomplete punching, and may not penetrate the front and back as shown in FIG. 3 or may partially penetrate. .

各々の分割鉄心片2の外周には、磁石装着孔4の間に切り込み部9が形成され、バリアエリアを形成して磁束を調整する役割を果たしている。   A cut portion 9 is formed between the magnet mounting holes 4 on the outer periphery of each of the divided core pieces 2 to form a barrier area and play a role of adjusting the magnetic flux.

互いに重なる環状鉄心片3は、周方向の分割鉄心片2同士の繋ぎ目10が周方向にずれて、いわゆるレンガ積みに所定枚数積層されており、本実施形態では、22.5度の位相ずれαを有して積層される。   The annular core pieces 3 that are overlapped with each other are formed by stacking a predetermined number of pieces in a so-called brick stack in which the joints 10 between the circumferentially divided core pieces 2 are shifted in the circumferential direction. In this embodiment, the phase shift is 22.5 degrees. Laminated with α.

22.5度の位相ずれαを有して環状鉄心片3を積層すると、磁石装着孔4および2つのカシメ部6が22.5度毎に配置されているため、磁石装着孔4およびカシメ部6のそれぞれの位置が、積層方向に一致する。したがって、磁石装着孔4は、環状鉄心片3の一方側から他方側へ貫通し、カシメ部6は、互いに重なるカシメ凹部8にカシメ凸部7が嵌合して連結される。   When the annular core pieces 3 are stacked with a phase shift α of 22.5 degrees, the magnet mounting holes 4 and the two crimping portions 6 are arranged at every 22.5 degrees, so the magnet mounting holes 4 and the crimping portions are arranged. Each position of 6 corresponds to the stacking direction. Therefore, the magnet mounting hole 4 penetrates from one side of the annular core piece 3 to the other side, and the crimping portion 6 is connected to the crimping concave portion 8 that is overlapped with the crimping convex portion 7.

なお、積層方向の一方最外側の環状鉄心片3を構成する分割鉄心片2では、外側にカシメ部6が突出しないよう、カシメ部6の代わりに貫通孔11が形成されることが好ましい。   In addition, in the split core piece 2 constituting the outermost annular core piece 3 in the stacking direction, it is preferable that the through hole 11 is formed instead of the crimped portion 6 so that the crimped portion 6 does not protrude outward.

次に、第1実施形態に係る積層鉄心の製造装置20について説明する。   Next, the laminated iron core manufacturing apparatus 20 according to the first embodiment will be described.

図4は、本実施形態に係る積層鉄心の製造装置を示す平面図、図5は、同製造装置の積層カシメステーションを示す平面図、図6は、図5のVI−VI線に沿う断面図、図7は、図5のVII−VII線に沿う断面図、図8は、同製造装置の積層カシメステーションを示す拡大平面図である。   4 is a plan view showing the laminated iron core manufacturing apparatus according to the present embodiment, FIG. 5 is a plan view showing the laminated caulking station of the manufacturing apparatus, and FIG. 6 is a sectional view taken along line VI-VI in FIG. 7 is a cross-sectional view taken along the line VII-VII in FIG. 5, and FIG. 8 is an enlarged plan view showing a laminated caulking station of the manufacturing apparatus.

本実施形態に係る積層鉄心の製造装置20は、被加工板Wを順送りしつつ分割鉄心片2を打ち抜き、打ち抜かれた分割鉄心片2を順次並べて積層する装置である。   The laminated core manufacturing apparatus 20 according to the present embodiment is an apparatus that punches the divided core pieces 2 while sequentially feeding the workpiece W, and sequentially arranges and stacks the punched divided core pieces 2.

被加工板Wは、ロール形態に巻かれた鋼板から引き出された帯状鋼板である。被加工板Wからは、分割鉄心片2が一列に並んで材料取りされる。   The to-be-processed board W is a strip | belt-shaped steel plate pulled out from the steel plate wound by the roll form. From the work plate W, the divided core pieces 2 are taken in line.

製造装置20は、図4に示すように、順送りの金型装置を含んでおり、異なる加工を行う複数のステーションS1〜S8が一列に並んで配置されることで、被加工板Wを順送りしつつ、各ステーション毎の加工を金型の一動作で同時に行うことができる。製造装置20は、制御部21を有しており、この制御部21により、各ステーションS1〜S8の動作が制御される。製造装置20には、上型22と下型23が対となって設けられており、下型23に対して上型が上下に駆動される構造となっている。上型22には、下型23と対向する面にストリッパー24がバネ支持されており、上型22が下方へ移動すると、まずストリッパー24が被加工板Wと接し、被加工板Wがストリッパー24と下型23のダイフェース面25の間に保持される。この後、さらに上型22が下降することで、ストリッパー24を貫通する各ステーションのポンチが下型23のダイスの孔部に挿通し、被加工板Wが加工されることとなる。   As shown in FIG. 4, the manufacturing apparatus 20 includes a progressive die device, and a plurality of stations S <b> 1 to S <b> 8 that perform different machining are arranged in a line, thereby feeding the workpiece W in order. However, the processing for each station can be performed simultaneously by one operation of the mold. The manufacturing apparatus 20 includes a control unit 21, and the operation of each station S <b> 1 to S <b> 8 is controlled by the control unit 21. In the manufacturing apparatus 20, an upper mold 22 and a lower mold 23 are provided as a pair, and the upper mold is driven up and down with respect to the lower mold 23. A stripper 24 is spring-supported on the upper die 22 on a surface facing the lower die 23. When the upper die 22 moves downward, the stripper 24 first comes into contact with the workpiece W, and the workpiece W is stripped. And the die face surface 25 of the lower mold 23. Thereafter, when the upper die 22 is further lowered, the punch of each station penetrating the stripper 24 is inserted into the hole of the die of the lower die 23, and the processed plate W is processed.

ステーションS1は、パイロット孔加工ステーションS1であり、上型22には、被加工板Wの両縁部に対応する位置にポンチが設けられ、下型23に同数の孔部が設けられる。パイロット孔加工ステーションS1では、上型22と下型23が近接することで、被加工板Wの両縁部にパイロット孔26を打ち抜いて成形する。パイロット孔26は、被加工板Wを精度よく搬送するために用いられる。   The station S1 is a pilot hole machining station S1, and the upper die 22 is provided with punches at positions corresponding to both edges of the workpiece W, and the lower die 23 is provided with the same number of holes. In the pilot hole processing station S1, the upper die 22 and the lower die 23 are close to each other, so that the pilot holes 26 are punched and formed on both edge portions of the processed plate W. The pilot hole 26 is used for accurately transporting the work plate W.

ステーションS2は、貫通孔打ち抜きステーションS2であり、上型22には、分割鉄心片2のカシメ部6に対応する数(本実施形態では8つ)の貫通孔打ち抜きポンチが設けられ、下型23に同数の貫通孔打ち抜き孔部が設けられる。貫通孔打ち抜きステーションS2では、上型22と下型23が近接することで、被加工板Wを貫通孔打ち抜きポンチおよび貫通孔打ち抜き孔部により打ち抜き加工し、カシメ部6に対応する位置に貫通孔11を成形する。貫通孔打ち抜きステーションS2は、加工する分割鉄心片2に応じて、作動および不作動が制御部21により制御可能となっている。したがって、積層鉄心1の積層方向の一方最外側の環状鉄心片3を構成する分割鉄心片2を加工する際にのみ、貫通孔打ち抜きステーションS2を作動させ、カシメ部6の代わりに貫通孔11を成形することができる。   The station S2 is a through-hole punching station S2, and the upper die 22 is provided with a number (eight in this embodiment) of through-hole punching punches corresponding to the caulking portions 6 of the divided core pieces 2, and the lower die 23 Are provided with the same number of through hole punching holes. In the through hole punching station S2, the upper die 22 and the lower die 23 are close to each other so that the processed plate W is punched by the through hole punching punch and the through hole punching hole portion, and the through hole is formed at a position corresponding to the caulking portion 6. 11 is molded. The operation and non-operation of the through-hole punching station S2 can be controlled by the control unit 21 in accordance with the divided core piece 2 to be processed. Therefore, the through hole punching station S2 is operated only when the divided core piece 2 constituting the outermost annular core piece 3 in the stacking direction of the laminated core 1 is processed, and the through hole 11 is provided instead of the caulking portion 6. Can be molded.

ステーションS3は、カシメ部成形ステーションS3であり、上型22には、分割鉄心片2のカシメ部6に対応する数の半抜きポンチ27が設けられ、下型23に同数の半抜き孔部28が設けられる。カシメ部成形ステーションS3では、上型22と下型23が近接することで、被加工板Wを半抜きポンチ27および半抜き孔部25により半抜き加工し、カシメ部6を成形する。カシメ部成形ステーションS3は、制御部21により、加工する分割鉄心片2に応じて作動および不作動が制御可能となっている。したがって、積層鉄心1の積層方向の一方最外側以外の環状鉄心片3を構成する分割鉄心片2を加工する際にのみ、貫通孔打ち抜きステーションS2を作動させ、貫通孔11ではなくカシメ部6を成形することができる。   Station S3 is a caulking part forming station S3. The upper die 22 is provided with a number of half punching punches 27 corresponding to the caulking part 6 of the divided core piece 2, and the same number of half punching hole portions 28 are provided in the lower die 23. Is provided. In the caulking part forming station S3, the upper die 22 and the lower die 23 are close to each other, so that the work plate W is half-punched by the half punching punch 27 and the half punching hole portion 25, and the caulking portion 6 is formed. The operation of the crimping part forming station S3 can be controlled by the control unit 21 according to the divided core piece 2 to be processed. Therefore, the through-hole punching station S2 is operated only when the divided core piece 2 constituting the annular core piece 3 other than the outermost one in the stacking direction of the laminated core 1 is operated, and the caulking portion 6 instead of the through-hole 11 is operated. Can be molded.

ステーションS4は、磁石装着孔打ち抜きステーションS4であり、上型22には、分割鉄心片2の磁石装着孔4に対応する数(本実施形態では4つ)の磁石装着孔打ち抜きポンチが設けられ、下型23に同数の磁石装着孔打ち抜き孔部が設けられる。磁石装着孔打ち抜きステーションS4では、上型22と下型23が近接することで、被加工板Wを磁石装着孔打ち抜きポンチおよび磁石装着孔打ち抜き孔部により打ち抜き加工し、磁石装着孔4を成形する。   Station S4 is a magnet mounting hole punching station S4, and the upper mold 22 is provided with a number (four in this embodiment) of magnet mounting hole punching punches corresponding to the magnet mounting holes 4 of the divided core piece 2. The lower mold 23 is provided with the same number of magnet mounting hole punching holes. In the magnet mounting hole punching station S4, when the upper mold 22 and the lower mold 23 are close to each other, the processed plate W is punched by the magnet mounting hole punching punch and the magnet mounting hole punching hole portion, and the magnet mounting hole 4 is formed. .

ステーションS5は、キー突起加工ステーションS5であり、上型22には、分割鉄心片2のキー突起5を加工するための4つのキー突起打ち抜きポンチが設けられ、下型23に同数のキー突起打ち抜き孔部が設けられる。キー突起加工ステーションS5では、上型22と下型23が近接することで、被加工板Wをキー突起打ち抜きポンチおよびキー突起打ち抜き孔部により打ち抜き加工し、キー突起5を成形する。キー突起加工ステーションS5は、加工する分割鉄心片2に応じて、任意のキー突起打ち抜きポンチの作動および不作動が制御部21により制御可能となっている。したがって、加工する分割鉄心片2に応じて、任意の位置にキー突起5を成形することができる。   Station S5 is a key protrusion processing station S5. The upper mold 22 is provided with four key protrusion punches for processing the key protrusions 5 of the divided core piece 2, and the same number of key protrusion punches in the lower mold 23. A hole is provided. In the key projection processing station S5, the upper mold 22 and the lower mold 23 are close to each other, so that the processed plate W is punched by the key protrusion punching punch and the key protrusion punching hole, and the key protrusion 5 is formed. In the key protrusion processing station S5, the operation and non-operation of an arbitrary key protrusion punching punch can be controlled by the control unit 21 in accordance with the divided core piece 2 to be processed. Therefore, the key protrusion 5 can be formed at an arbitrary position according to the divided core piece 2 to be processed.

ステーションS6は、側面打ち抜きステーションS6であり、上型22には、分割鉄心片2の他の分割鉄心片2と連結される両側面を加工するための2つの側面打ち抜きポンチが設けられ、下型23に同数の側面打ち抜き孔部が設けられる。側面打ち抜きステーションS6では、上型22と下型23が近接することで、被加工板Wを側面打ち抜きポンチおよび側面打ち抜き孔部により打ち抜き加工し、分割鉄心片2の両側面を成形する。   The station S6 is a side punching station S6, and the upper die 22 is provided with two side punching punches for processing both side surfaces connected to the other divided core pieces 2 and the lower die. 23 are provided with the same number of side punch holes. In the side punching station S6, the upper die 22 and the lower die 23 are close to each other, so that the processed plate W is punched by the side punching punches and the side punching holes, and both side surfaces of the divided core piece 2 are formed.

ステーションS7は、内径面打ち抜きステーションS6であり、上型22には、分割鉄心片2の内径側の面を加工するための2つの内径面打ち抜きポンチが設けられ、下型23に同数の内径面打ち抜き孔部が設けられる。内径面打ち抜きステーションS6では、上型22と下型23が近接することで、被加工板Wを内径面打ち抜きポンチおよび内径面打ち抜き孔部により打ち抜き加工し、分割鉄心片2の内径側の面を成形する。   Station S7 is an inner surface punching station S6, and the upper die 22 is provided with two inner surface punching punches for machining the inner surface of the divided core piece 2, and the lower die 23 has the same number of inner surface. A punching hole is provided. In the inner surface punching station S6, the upper die 22 and the lower die 23 are close to each other, whereby the workpiece W is punched by the inner surface punching punch and the inner surface punching hole, and the inner surface of the divided core piece 2 is formed. Mold.

この後、加工が行われない複数のアイドル工程Iを経て、外径打ち抜き積層カシメステーションS8が設けられる。外径打ち抜き積層カシメステーションS8は、図5〜8に示すように、上型22には、分割鉄心片2の外径側の輪郭を打ち抜く外径打ち抜きポンチ29が設けられる。外径打ち抜きポンチ29の下方には、下型23に回転可能に嵌合する筒状(環状)の外側挟持部30が設けられる。外側挟持部30は、上側の外周部の外径が大きく形成されており、下型23に嵌合した状態で、下方への力に耐える構造となっている。外側挟持部30の内径面31は、積層鉄心1の外周面に対応する形状で形成され、外側挟持部30の上端面は、下型23のダイフェース面25と同一面となっており、外側挟持部30の内径面31の上側の縁部が、外径打ち抜きポンチ29と対をなすダイスの刃として機能する。外側挟持部30の外周には、金型の側方に設けられる回転装置32から延びるベルト33が接しており、外側挟持部30を回転駆動することができる。また、外側挟持部30の外周面と下型23の間には、ラチェット34が配置されて、一定回転角毎に外側挟持部30の回転が停止する構造となっていることが好ましい。これにより、積層鉄心1の外周面に対応する形状の外側挟持部30が、常に分割鉄心片2の形状と対応して位置決めされる。本実施形態では、積層鉄心1の外周面の形状が、1つの磁石装着孔に対応する22.5度毎に周方向に繰り返される形状となっているため、22.5度毎に外側挟持部30の回転が停止する構造であることが好ましい。   Thereafter, through a plurality of idle processes I in which processing is not performed, an outer diameter punching laminated caulking station S8 is provided. As shown in FIGS. 5 to 8, in the outer diameter punching laminated caulking station S <b> 8, the upper die 22 is provided with an outer diameter punching punch 29 for punching the outer diameter side contour of the divided core piece 2. Below the outer diameter punching punch 29, a cylindrical (annular) outer pinching portion 30 that is rotatably fitted to the lower mold 23 is provided. The outer pinching portion 30 has a structure in which the outer diameter of the upper outer peripheral portion is large and can withstand a downward force in a state of being fitted to the lower mold 23. An inner diameter surface 31 of the outer clamping unit 30 is formed in a shape corresponding to the outer peripheral surface of the laminated core 1, and an upper end surface of the outer clamping unit 30 is flush with the die face surface 25 of the lower mold 23. The upper edge portion of the inner diameter surface 31 of the clamping portion 30 functions as a die blade paired with the outer diameter punching punch 29. A belt 33 extending from a rotating device 32 provided on the side of the mold is in contact with the outer periphery of the outer clamping unit 30 so that the outer clamping unit 30 can be driven to rotate. In addition, it is preferable that a ratchet 34 is disposed between the outer peripheral surface of the outer clamping unit 30 and the lower mold 23 so that the rotation of the outer clamping unit 30 stops at every predetermined rotation angle. Thereby, the outer side clamping part 30 of the shape corresponding to the outer peripheral surface of the laminated core 1 is always positioned corresponding to the shape of the divided core pieces 2. In this embodiment, since the shape of the outer peripheral surface of the laminated iron core 1 is a shape that repeats in the circumferential direction every 22.5 degrees corresponding to one magnet mounting hole, the outer clamping portion every 22.5 degrees A structure in which the rotation of 30 stops is preferable.

下型23のダイフェース面25には、外側挟持部30の上側(上型側)を、被加工板Wの幅方向へ差し渡すようにホルダー36が設けられる。ホルダー36は、上型22の外径打ち抜きポンチ29が、下型方向へ出入り可能な構造となっている。ホルダー36は、下型23のダイフェース面25における外側挟持部30の半径方向両外側から内側方向へ延びる2つのホルダー外側部37A,37Bと、ホルダー外側部37A,37Bに連結される2つのホルダー吊下げ部38A,38Bと、両ホルダー吊下げ部38A,38Bに連結されるホルダー中央部39とを有している。   A holder 36 is provided on the die face surface 25 of the lower mold 23 so as to pass the upper side (upper mold side) of the outer clamping portion 30 in the width direction of the processed plate W. The holder 36 has a structure in which the outer diameter punching punch 29 of the upper die 22 can enter and exit in the lower die direction. The holder 36 includes two holder outer portions 37A and 37B extending inward from the radially outer sides of the outer clamping portion 30 on the die face surface 25 of the lower mold 23, and two holders connected to the holder outer portions 37A and 37B. It has suspension parts 38A and 38B, and a holder central part 39 connected to both holder suspension parts 38A and 38B.

ホルダー外側部37A,37Bは、両外端部が、ダイフェース面25にボルト40等により固定されており、両外端部から、被加工板Wの搬送方向と交差する方向の幅Lよりも外側かつ製造される積層鉄心1の内径D1よりも内側まで延在している。   Both outer end portions of the holder outer portions 37A and 37B are fixed to the die face surface 25 with bolts 40 or the like, and the width L in the direction intersecting the conveying direction of the work plate W from both outer end portions. It extends to the inner side of the outer side and the inner diameter D1 of the laminated core 1 to be manufactured.

ホルダー吊下げ部38A,38Bは、ホルダー外側部37A,37Bの内側端部に連結され、ホルダー外側部37A,37Bから、上型22から下型23へ向う方向である打ち抜き方向へ延びて形成されている。したがって、ホルダー吊下げ部38A,38B全体が、被加工板Wの幅Lよりも外側かつ積層鉄心1の内径D1よりも内側に位置している(図7参照)。   The holder suspension portions 38A and 38B are connected to inner end portions of the holder outer portions 37A and 37B, and are formed to extend from the holder outer portions 37A and 37B in a punching direction that is a direction from the upper die 22 to the lower die 23. ing. Therefore, the entire holder suspensions 38A and 38B are located outside the width L of the workpiece plate W and inside the inner diameter D1 of the laminated core 1 (see FIG. 7).

ホルダー中央部39は、両端部が両ホルダー吊下げ部38A,38Bの下端部(打ち抜き方向端部)に連結されて形成される。ホルダー中央部39の上面41は、ダイフェース面25と同一面もしくはダイフェース面25よりも下方に位置している。したがって、ホルダー中央部39の上面41がダイフェース面25と同一面または下方に位置し、かつホルダー吊下げ部38A,38Bが被加工板Wの幅Lよりも外側に位置するため、打ち抜き加工の際に下面がダイフェース面25と一致する被加工板Wが、ホルダー36に干渉されない。   The holder central portion 39 is formed by connecting both end portions to the lower end portions (end portions in the punching direction) of the holder suspension portions 38A and 38B. The upper surface 41 of the holder central portion 39 is located on the same plane as the die face surface 25 or below the die face surface 25. Therefore, since the upper surface 41 of the holder central portion 39 is located on the same plane as or below the die face surface 25 and the holder suspension portions 38A and 38B are located outside the width L of the workpiece W, the punching process is performed. At this time, the work plate W whose lower surface coincides with the die face surface 25 is not interfered with the holder 36.

また、ホルダー吊下げ部38A,38Bが、積層鉄心1の内径D1よりも内側に位置することで、積層される積層鉄心1と干渉することなしに、ホルダー吊下げ部38A,38Bが積層鉄心1の内側で下方へ延在することができる。これにより、ホルダー中央部39の上面41を、上述のようにダイフェース面25と同一面もしくは下方に位置させることが可能となっている。   Further, since the holder suspension portions 38A and 38B are located inside the inner diameter D1 of the laminated core 1, the holder suspension portions 38A and 38B are not interfered with the laminated core 1 to be laminated. It can extend downward inside. As a result, the upper surface 41 of the holder central portion 39 can be positioned on the same plane as or below the die face surface 25 as described above.

ホルダー中央部39は、下面側に回転軸42が形成され、この回転軸42に、マンドレル45(内側挟持部)が回転可能に保持されている。内側挟持部45は、積層鉄心1の内周面と対応する外周面を有する円形の部材である。内側挟持部45は、外側挟持部30と対となって鉄心片挟持部を構成し、内側挟持部45と外側挟持部30の間に、打ち抜かれた各々の分割鉄心片2を回転可能に挟持することができる。内側挟持部45と回転軸42の間には、ラチェット46が配置されて、一定回転角毎に内側挟持部45の回転が停止する構造となっていることが好ましい。これにより、積層鉄心1の内周面に対応する形状の内側挟持部45が、常に分割鉄心片2の形状と対応して位置決めされる。本実施形態では、積層鉄心1の内周面に、キー突起5が磁石装着孔4に対応する22.5度毎に周方向に設けられる可能性があるため、22.5度毎に内側挟持部45の回転が停止する構造であることが好ましい。また、内側挟持部45の外周部44には、キー突起5を収容可能なキー突起逃げ部49が形成される。   The holder central portion 39 has a rotation shaft 42 formed on the lower surface side, and a mandrel 45 (inner clamping portion) is rotatably held on the rotation shaft 42. The inner clamping portion 45 is a circular member having an outer peripheral surface corresponding to the inner peripheral surface of the laminated core 1. The inner clamping part 45 forms a core piece clamping part in pairs with the outer clamping part 30, and each of the punched divided core pieces 2 is rotatably clamped between the inner clamping part 45 and the outer clamping part 30. can do. It is preferable that a ratchet 46 is disposed between the inner clamping part 45 and the rotation shaft 42 so that the rotation of the inner clamping part 45 stops at every fixed rotation angle. Thereby, the inner side clamping part 45 of the shape corresponding to the internal peripheral surface of the laminated iron core 1 is always positioned corresponding to the shape of the division | segmentation iron core piece 2. FIG. In the present embodiment, the key protrusion 5 may be provided in the circumferential direction every 22.5 degrees corresponding to the magnet mounting hole 4 on the inner peripheral surface of the laminated iron core 1, so that the inner protrusion is held every 22.5 degrees. A structure in which the rotation of the portion 45 stops is preferable. Further, a key protrusion escape portion 49 that can accommodate the key protrusion 5 is formed on the outer peripheral portion 44 of the inner clamping portion 45.

内側挟持部45の外周面が形成される外周部44は、外側挟持部30と対応して上端面がダイフェース面25と一致する。   The outer peripheral portion 44 on which the outer peripheral surface of the inner clamping portion 45 is formed has an upper end surface corresponding to the die face surface 25 corresponding to the outer clamping portion 30.

外側挟持部30および内側挟持部45の下方(打ち抜き方向)には、製造された積層鉄心1を受けるための受け面47が形成された回転可能な回転台48が設けられている。回転台48は、昇降可能に設けられる。 次に、第1実施形態に係る積層鉄心の製造装置20の作用を説明する。   Below the outer sandwiching portion 30 and the inner sandwiching portion 45 (in the punching direction), a rotatable turntable 48 having a receiving surface 47 for receiving the manufactured laminated core 1 is provided. The turntable 48 is provided so that it can be raised and lowered. Next, the operation of the laminated core manufacturing apparatus 20 according to the first embodiment will be described.

図9は、第1実施形態に係る積層鉄心の製造装置により最下層の3つの分割鉄心片を積層した際を示す平面図、図10は、同製造装置により最下層の4つの分割鉄心片を積層した際を示す平面図、図11は、同製造装置により最下層から次の層の1つ目の分割鉄心片を積層した際を示す平面図、図12は、同製造装置により最下層から次の層の2つ目の分割鉄心片を積層した際を示す平面図、図13は、積層されて重なる分割鉄心片同士がカシメ結合される際を示す部分断面図である。   FIG. 9 is a plan view showing the case where the lowermost three divided core pieces are laminated by the laminated core manufacturing apparatus according to the first embodiment, and FIG. 10 shows the lowermost four divided core pieces by the same manufacturing apparatus. FIG. 11 is a plan view showing a state in which the first divided core pieces of the next layer are laminated from the bottom layer by the manufacturing apparatus, and FIG. 12 is a plan view from the bottom layer by the manufacturing apparatus. FIG. 13 is a partial cross-sectional view showing a case where the second divided core pieces of the next layer are laminated, and FIG.

本実施形態に係る積層鉄心の製造装置20に搬入された被加工板Wは、図4に示すように、始めにパイロット孔加工ステーションS1に順送りされ、両縁部にパイロット孔26が打ち抜き加工される。パイロット孔26は、被加工板Wを精度よく搬送するために用いられる。   As shown in FIG. 4, the work plate W carried into the laminated core manufacturing apparatus 20 according to the present embodiment is first fed forward to the pilot hole processing station S1, and the pilot holes 26 are punched at both edges. The The pilot hole 26 is used for accurately transporting the work plate W.

次に、被加工板Wは貫通孔打ち抜きステーションS2に順送りされ、始めの4つの分割鉄心片2にのみ、貫通孔打ち抜きポンチにより打ち抜き加工される。これにより、カシメ部6に対応する位置に貫通孔11が成形される。   Next, the work plate W is sequentially fed to the through-hole punching station S2, and only the first four divided core pieces 2 are punched by a through-hole punching punch. Thereby, the through hole 11 is formed at a position corresponding to the crimping portion 6.

次に、被加工板Wはカシメ部成形ステーションS3に順送りされる。しかし、積層鉄心1の最下層を構成する始めの4つの分割鉄心片2にはカシメ部6は形成されないため、始めの4つの分割鉄心片2には加工は行わず、始めの4つ以外の分割鉄心片2にのみ加工を行う。これにより、カシメ部6が成形される。   Next, the work plate W is sequentially fed to the crimping part forming station S3. However, since the caulking portion 6 is not formed on the first four divided core pieces 2 constituting the lowermost layer of the laminated core 1, the first four divided core pieces 2 are not processed, and other than the first four pieces. Only the divided core pieces 2 are processed. Thereby, the crimping part 6 is shape | molded.

次に、被加工板Wは磁石装着孔打ち抜きステーションS4に順送りされる。被加工板Wは、磁石装着孔打ち抜きポンチにより打ち抜き加工されて、磁石装着孔4が成形される。   Next, the work plate W is sequentially fed to the magnet mounting hole punching station S4. The work plate W is punched by a magnet mounting hole punch, and the magnet mounting hole 4 is formed.

この後、被加工板Wはキー突起加工ステーションS5に順送りされる。被加工板Wは、キー突起打ち抜きポンチにより打ち抜き加工されて、加工する分割鉄心片2に応じて、任意の位置にキー突起5が成形される。なお、加工する分割鉄心片2によっては、キー突起5は成形されない。   Thereafter, the work plate W is sequentially fed to the key projection processing station S5. The workpiece W is punched by a key protrusion punch, and the key protrusion 5 is formed at an arbitrary position according to the divided core piece 2 to be processed. Note that the key protrusion 5 is not formed depending on the divided core piece 2 to be processed.

次に、被加工板Wは側面打ち抜きステーションS6に順送りされる。被加工板Wは、側面打ち抜きポンチにより打ち抜き加工されて、分割鉄心片2の両側面が成形される。   Next, the work plate W is fed forward to the side punching station S6. The work plate W is punched by a side punch, and both side surfaces of the divided core piece 2 are formed.

次に、被加工板Wは内径面打ち抜きステーションS7に順送りされる。被加工板Wは、内径面打ち抜きポンチにより打ち抜き加工されて、分割鉄心片2の内径側の面が成形される。   Next, the work plate W is sequentially fed to the inner surface punching station S7. The work plate W is punched by an inner surface punching punch, and the inner surface of the divided core piece 2 is formed.

なお、上述の側面打ち抜きステーションS6および内径面打ち抜きステーションS7では、一定の範囲を打ち抜いて取り除くのではなく、分割鉄心片2の輪郭に沿う境界線のみを、せん断するように打ち抜いてもよい。このためには、まずポンチおよびダイを用いて分割鉄心片2の輪郭に沿う境界線上を完全にせん断(全抜き)させた後、塑性変形した部位をプッシュバックさせて被加工板Wを元の平面に戻すことで実現できる。または、まずポンチおよびダイを用いて分割鉄心片2の輪郭に沿う境界線上を不完全にせん断(半抜き)させた後、塑性変形した部位をプッシュバックさせて被加工板Wを元の平面に戻す際に、半抜き部を完全にせん断させることも可能である。このように、一定の範囲を取り除かずに、分割鉄心片2の輪郭に沿う境界線のみを打ち抜けば、被加工板Wからより多くの分割鉄心片2を打ち抜くことができ、歩留まりが向上する。   In the above-described side surface punching station S6 and inner diameter surface punching station S7, instead of punching and removing a certain range, only the boundary line along the outline of the divided core piece 2 may be punched so as to be sheared. For this purpose, first, a punch and die are used to completely shear (completely remove) the boundary line along the contour of the divided core piece 2, and then the plastically deformed portion is pushed back so that the work plate W is restored to its original shape. This can be realized by returning to a flat surface. Alternatively, first, a punch and a die are used to incompletely shear (half-punch) the boundary line along the outline of the divided core piece 2 and then the plastically deformed portion is pushed back to bring the work plate W back to the original plane. When returning, it is also possible to completely shear the half punched portion. Thus, if only the boundary line along the outline of the divided core piece 2 is punched out without removing a certain range, a larger number of divided core pieces 2 can be punched from the work plate W, and the yield is improved. .

この後、被加工板Wは外径打ち抜き積層カシメステーションS8に順送りされ、図5〜7に示すように、鉄心片打ち抜きポンチ29および外側挟持部30により、分割鉄心片2の外径側の輪郭が打ち抜き加工される。このとき、外側挟持部30の内側の内径面31が、分割鉄心片2の外径側と対応する形状を備え、かつ内側挟持部45の外周部46が、分割鉄心片2の内径側と対応する形状を備えているため、打ち抜かれた分割鉄心片2が、外側挟持部30と内側挟持部45の間に挟持される。また、分割鉄心片2の内側にキー突起5が形成されている場合には、キー突起5が、内側挟持部45のキー突起逃げ部49に収容される。   Thereafter, the work plate W is sequentially fed to the outer diameter punching lamination caulking station S8, and as shown in FIGS. 5 to 7, the outer peripheral side contour of the split core piece 2 is formed by the iron core punching punch 29 and the outer clamping portion 30. Is stamped. At this time, the inner diameter surface 31 on the inner side of the outer sandwiching part 30 has a shape corresponding to the outer diameter side of the split core piece 2, and the outer peripheral part 46 of the inner gripping part 45 corresponds to the inner diameter side of the split core piece 2. Therefore, the punched divided core pieces 2 are sandwiched between the outer sandwiching portion 30 and the inner sandwiching portion 45. When the key protrusion 5 is formed on the inner side of the divided core piece 2, the key protrusion 5 is accommodated in the key protrusion escape portion 49 of the inner clamping portion 45.

この後、図9に示すように、回転装置32により外側挟持部30を分割鉄心片2の円弧角θに対応して90度ずつ回転させつつ、順送りされる被加工板WをステーションS1〜S8により順次加工する。なお、外側挟持部30が回転すると、挟持された分割鉄心片2を介して内側挟持部45に回転力が伝わり、内側挟持部45も同期して回転することとなる。初めの4つの分割鉄心片2を打ち抜くと、図10に示すように、最下層の4つの分割鉄心片2が外側挟持部30と内側挟持部45の間に環状に並び、環状鉄心片3が構成される。   Thereafter, as shown in FIG. 9, while the outer clamping portion 30 is rotated by 90 degrees corresponding to the arc angle θ of the divided core piece 2 by the rotating device 32, the progressively fed work plate W is moved to the stations S <b> 1 to S <b> 8. To process sequentially. In addition, when the outer side clamping part 30 rotates, a rotational force will be transmitted to the inner side clamping part 45 via the clamped split core piece 2, and the inner side clamping part 45 will also rotate synchronously. When the first four divided core pieces 2 are punched out, as shown in FIG. 10, the lowermost four divided core pieces 2 are arranged in an annular shape between the outer holding portion 30 and the inner holding portion 45, and the annular core pieces 3 are formed. Composed.

同一の環状鉄心片3を構成する4つの分割鉄心片2を全て打ち抜いた後は、次の層を構成する分割鉄心片2a(以降、互いに重なる分割鉄心片のうち下層を2、上層を2aと表す場合がある。)の積層に移行する。このとき、図11に示すように、外側挟持部30および内側挟持部45を、分割鉄心片2の円弧角θである90度ではなく、22.5度(位相ずれα)だけ回転させる。したがって、層が変わることにより、周方向の分割鉄心片2同士の繋ぎ目10が、22.5度の位相ずれαを有することとなる。なお、位相ずれαは22.5度以外でもよく、例えば磁石装着孔に対応する22.5度の倍数である45度や67.5度とすることもできる。   After all of the four divided core pieces 2 constituting the same annular core piece 3 are punched out, the divided core pieces 2a constituting the next layer (hereinafter, the divided core pieces overlapping each other with the lower layer 2 and the upper layer 2a) (It may be expressed.) At this time, as shown in FIG. 11, the outer sandwiching portion 30 and the inner sandwiching portion 45 are rotated by 22.5 degrees (phase shift α) instead of 90 degrees that is the arc angle θ of the divided core piece 2. Therefore, when the layer is changed, the joint 10 between the divided core pieces 2 in the circumferential direction has a phase shift α of 22.5 degrees. The phase shift α may be other than 22.5 degrees, and may be 45 degrees or 67.5 degrees that is a multiple of 22.5 degrees corresponding to the magnet mounting hole, for example.

なお、最下層以降の分割鉄心片2は、始めの4つの分割鉄心片2と異なり、貫通孔打ち抜きステーションS2では加工されず、カシメ部成形ステーションS3において、半抜きポンチ27によりカシメ部6が成形されている。   Unlike the first four divided core pieces 2, the divided core pieces 2 after the lowermost layer are not processed at the through hole punching station S 2, and the crimped portion 6 is formed by the half punching punch 27 at the crimped portion forming station S 3. Has been.

初めの4つの分割鉄心片2以降も、外径打ち抜き積層カシメステーションS8に順送りされた被加工板Wは、図11,12に示すように打ち抜き加工されて、上述した最下層の場合と同様に分割鉄心片2aが打ち抜き加工される。打ち抜かれた分割鉄心片2aは、図13に示すように、鉄心片打ち抜きポンチ29による打ち抜き力で上方から押圧されて、外側挟持部30と内側挟持部45の間に挿入されつつ、下層の貫通孔11にカシメ凸部7が嵌合し、カシメ結合する。これにより、打ち抜かれた分割鉄心片2aが下層の分割鉄心片2と良好に連結される。このとき、打ち抜かれた分割鉄心片2aは、下層の2つの分割鉄心片2にまたがってカシメ結合するため、下層の2つの分割鉄心片2同士も固定されることとなる。   After the first four divided core pieces 2, the work plate W fed forward to the outer diameter punching laminated caulking station S8 is punched as shown in FIGS. 11 and 12, and is the same as in the case of the lowermost layer described above. The divided core pieces 2a are punched. As shown in FIG. 13, the punched divided core pieces 2 a are pressed from above by the punching force of the core piece punching punch 29 and inserted between the outer sandwiching portion 30 and the inner sandwiching portion 45, while penetrating the lower layer. The caulking convex portion 7 is fitted into the hole 11 and is caulked and joined. As a result, the punched divided iron core piece 2a is well connected to the lower divided iron core piece 2. At this time, the punched split core pieces 2a are caulked and joined across the two lower split core pieces 2, so that the two lower split core pieces 2 are also fixed.

新たな層の分割鉄心片2aが打ち抜かれると、下層の分割鉄心片2は、新たに打ち抜かれた分割鉄心片2aによって下方へ押し下げられる。したがって、外側挟持部30と内側挟持部45の間で分割鉄心片2を保持する力は、鉄心片打ち抜きポンチ29により分割鉄心片2が押し下げられることを可能とし、かつカシメ結合を実現できる程度に堅固であることが必要である。   When the new core iron pieces 2a are punched out, the lower core iron pieces 2 are pushed downward by the newly punched iron core pieces 2a. Therefore, the force for holding the divided core piece 2 between the outer holding portion 30 and the inner holding portion 45 is such that the divided core piece 2 can be pushed down by the iron piece punching punch 29 and that the caulking connection can be realized. It needs to be solid.

この後、外側挟持部30と内側挟持部45を90度ずつ回転させつつ、同一層の環状鉄心片3を構成する4つの分割鉄心片2を打ち抜いて環状に並べる。すわわち、22.5度だけ外側挟持部30および内側挟持部45を回転させるのは、層が移行する際の1回目のみであり、この後の同一層での回転角度は、分割鉄心片2の円弧角θである90度である。これにより、下層の分割鉄心片2は、新たに打ち抜かれた分割鉄心片2aによって下方へ押し下げられつつ、互いに重なる分割鉄心片2,2a同士がカシメ結合されて、新たな層の環状鉄心片3が構成される。   After that, while rotating the outer sandwiching portion 30 and the inner sandwiching portion 45 by 90 degrees, the four split core pieces 2 constituting the annular core piece 3 of the same layer are punched and arranged in an annular shape. In other words, the outer holding part 30 and the inner holding part 45 are rotated only by the first time when the layers are shifted by 22.5 degrees, and the rotation angle in the same layer thereafter is determined by dividing the core piece. The arc angle θ of 2 is 90 degrees. As a result, the lower divided core pieces 2 are pushed downward by the newly punched divided core pieces 2a, and the divided core pieces 2 and 2a that are overlapped with each other are caulked and joined together to form a new layer of annular core pieces 3. Is configured.

3層目以降も、上述の通り、積層する層が移行する際のみ22.5度だけ外側挟持部30を回転させ、それ以外(同一層における積層)では90度だけ外側挟持部30を回転させつつ、順送りされる被加工板WをステーションS1〜S8により順次加工して、分割鉄心片2aを下層の分割鉄心片2とカシメ結合して積層する。なお、3層目以降の分割鉄心片2のカシメ凸部7は、貫通孔11に対してではなく、その下層のカシメ凹部8に対して嵌合してカシメ結合することとなる。   In the third and subsequent layers, as described above, the outer holding portion 30 is rotated by 22.5 degrees only when the layers to be stacked are transferred, and the outer holding portion 30 is rotated by 90 degrees in other cases (stacking in the same layer). Meanwhile, the workpiece W to be sequentially fed is sequentially processed by the stations S1 to S8, and the divided core pieces 2a are caulked and bonded to the lower divided core pieces 2 to be laminated. The caulking convex portions 7 of the divided core pieces 2 in the third and subsequent layers are not engaged with the through holes 11 but are engaged with the caulking concave portions 8 in the lower layer to be caulked and coupled.

予め設定された層数の環状鉄心片3が積層されて積層鉄心1が構成されると、再び、カシメ部6ではなく貫通孔11が形成されて最下層となる4つの分割鉄心片2から、前述と同様に順次加工を行い、次の積層鉄心1の製造を連続して行う。ここで、新たな積層鉄心1の最下層にカシメ部6が形成されないため、既に製造された積層鉄心1を排出することなく重ねて製造しても、異なる積層鉄心1同士がカシメ結合されない。このように、本装置20では、製造された積層鉄心1が外側挟持部30に保持された状態のまま、その上方から、順次他の積層鉄心1を製造する。したがって、新たに製造される積層鉄心1によって、既に製造された積層鉄心1が外側挟持部30内を押し下げられることとなる。   When the predetermined number of layers of the annular core pieces 3 are laminated to form the laminated core 1, again, the four divided core pieces 2 that form the through holes 11 instead of the caulking portions 6 and become the lowermost layer, Processing is sequentially performed in the same manner as described above, and the next laminated core 1 is continuously manufactured. Here, since the caulking portion 6 is not formed in the lowermost layer of the new laminated core 1, even if the already produced laminated core 1 is manufactured without being discharged, the different laminated cores 1 are not caulked and joined together. Thus, in this apparatus 20, the other laminated iron core 1 is manufactured sequentially from the upper direction, with the produced laminated iron core 1 being held in the outer clamping part 30. Therefore, the already manufactured laminated core 1 is pushed down in the outer clamping part 30 by the newly produced laminated core 1.

押し下げられた積層鉄心1が外側挟持部30よりも下方まで移動すると、外側挟持部30の下方に位置する回転台48の受け面47に、積層鉄心1の下面が接する。この後、積層鉄心1の下降に伴い、回転台48も下降させる。なお、回転台48は、積層鉄心1を保持する外側挟持部30と同期して回転する。   When the pushed down laminated core 1 moves below the outer holding part 30, the lower surface of the laminated core 1 comes into contact with the receiving surface 47 of the turntable 48 located below the outer holding part 30. Thereafter, as the laminated core 1 is lowered, the turntable 48 is also lowered. The turntable 48 rotates in synchronization with the outer clamping unit 30 that holds the laminated core 1.

複数の積層鉄心1を連続して製造し、押し下げられた積層鉄心1の上端が外側挟持部30の下端よりも下方まで移動すると、積層鉄心1が外側挟持部30による保持(拘束)から開放される。この後、回転台48を下降させて、製造装置20から積層鉄心1を搬出する。   When a plurality of laminated cores 1 are manufactured in succession and the upper end of the pushed down laminated core 1 moves below the lower end of the outer clamping part 30, the laminated core 1 is released from being held (restrained) by the outer clamping part 30. The Then, the turntable 48 is lowered and the laminated iron core 1 is carried out from the manufacturing apparatus 20.

本実施形態に係る積層鉄心の製造装置20によれば、打ち抜かれた分割鉄心片2の各々を挟持しつつ回転させる外側挟持部30および内側挟持部45が設けられるため、各々の分割鉄心片2を保持しつつ環状に積層することができ、生産性に極めて優れている。   According to the laminated core manufacturing apparatus 20 according to the present embodiment, the outer sandwiched portion 30 and the inner sandwiched portion 45 that rotate while sandwiching each of the punched divided core pieces 2 are provided. It is possible to laminate in a ring shape while holding the material, and the productivity is extremely excellent.

また、本製造装置20によれば、打ち抜かれる分割鉄心片2を外側挟持部30と内側挟持部45との間に保持しつつ積層するため、分割鉄心片2を確実に保持しつつも、分割鉄心片を順次積層することで積層方向(下方)へ押し下げることができる。したがって、外側挟持部30から下方へ押し出された積層鉄心1を搬出することができ、この搬出の際にプレス動作を停止する必要がなく、生産性に極めて優れている。   Moreover, according to this manufacturing apparatus 20, since the divided core pieces 2 to be punched are stacked while being held between the outer holding portion 30 and the inner holding portion 45, the divided core pieces 2 can be divided while being reliably held. The core pieces can be pushed down in the stacking direction (downward) by sequentially stacking the core pieces. Therefore, it is possible to carry out the laminated core 1 pushed downward from the outer clamping part 30, and it is not necessary to stop the pressing operation at the time of carrying out, and the productivity is extremely excellent.

また、本製造装置20によれば、外側挟持部30が下型23内で回転可能に設けられるため、打ち抜かれた分割鉄心片2を環状に配列しつつ、位相ずれαを有した積層鉄心1を製造できる。   Moreover, according to this manufacturing apparatus 20, since the outer clamping part 30 is rotatably provided in the lower mold | type 23, the laminated iron core 1 which has the phase shift (alpha), arranging the punched-out divided iron core pieces 2 cyclically | annularly. Can be manufactured.

また、本製造装置20によれば、内側挟持部45が下型23内で回転可能に設けられるため、打ち抜かれた分割鉄心片2を環状に配列しつつ、位相ずれαを有した積層鉄心1を製造できる。   Moreover, according to this manufacturing apparatus 20, since the inner clamping part 45 is rotatably provided in the lower mold | type 23, the laminated iron core 1 which has the phase shift (alpha), arranging the punched divided core pieces 2 cyclically | annularly. Can be manufactured.

また、内側挟持部45が、下型23のダイフェース面25から外側挟持部30の内側まで延在するホルダー36に回転可能に保持されているため、外側挟持部30内で環状に形成された積層鉄心1を、外側挟持部30の下方から搬出することができる。   Further, since the inner clamping part 45 is rotatably held by the holder 36 extending from the die face surface 25 of the lower mold 23 to the inner side of the outer clamping part 30, it is formed in an annular shape in the outer clamping part 30. The laminated iron core 1 can be carried out from below the outer clamping part 30.

また、本製造装置20によれば、被加工板Wの幅Lが、製造される積層鉄心1の内径D1よりも小さいため、被加工板Wの幅方向外側と積層鉄心1の内径面の間に空間が生じ、ホルダー36を外側挟持部30の内側へ延在させて配置することができる。これにより、ホルダー36が、プレス加工の際に被加工板Wおよび積層鉄心1と干渉しない。   Further, according to the manufacturing apparatus 20, the width L of the processed plate W is smaller than the inner diameter D <b> 1 of the manufactured laminated core 1, and therefore, between the outer side in the width direction of the processed plate W and the inner diameter surface of the laminated core 1. A space is created in the holder 36, and the holder 36 can be arranged so as to extend inside the outer holding portion 30. Thereby, the holder 36 does not interfere with the workpiece W and the laminated iron core 1 during the press working.

また、ホルダー36のホルダー中央部39の上面41が、打ち抜きの際に被加工板Wが接する下型23のダイフェース面25と同一または打ち抜き方向側に位置しているため、プレス動作の際に、ホルダー36が被加工板Wと干渉しない。更に、ホルダー吊下げ部38A,38Bが被加工板Wの幅方向の外側かつ製造される積層鉄心1の内径よりも内側で、打ち抜き方向へ延びているため、プレス動作の際に、ホルダー36が被加工板Wおよび積層鉄心1と干渉しない。   In addition, since the upper surface 41 of the holder central portion 39 of the holder 36 is located on the same side as the die face surface 25 of the lower mold 23 with which the work plate W contacts during punching or on the punching direction side, The holder 36 does not interfere with the work plate W. Furthermore, since the holder suspension portions 38A and 38B extend in the punching direction outside the workpiece plate W in the width direction and inside the inner diameter of the laminated core 1 to be manufactured, the holder 36 is moved during the pressing operation. It does not interfere with the work plate W and the laminated iron core 1.

また、本製造装置20によれば、ホルダー36が、鉄心片打ち抜きポンチ29が出入り可能な構造を有しているため、外側挟持部30の上方側にホルダー36を設けても、分割鉄心片2を打ち抜くことができる。   Further, according to the present manufacturing apparatus 20, the holder 36 has a structure in which the iron core punching punch 29 can enter and exit. Therefore, even if the holder 36 is provided above the outer clamping part 30, the divided iron core piece 2 is provided. Can be punched out.

また、外側挟持部30の内径面31が、積層鉄心1の外側の形状に対応した形状を有しており、内側挟持部45の外径面が、積層鉄心1の内側の形状に対応した形状を有しているため、打ち抜かれた分割鉄心片2を確実に保持できる。   Further, the inner diameter surface 31 of the outer sandwiching portion 30 has a shape corresponding to the outer shape of the laminated core 1, and the outer diameter surface of the inner sandwiching portion 45 is a shape corresponding to the inner shape of the laminated core 1. Therefore, the punched divided core piece 2 can be reliably held.

また、内側挟持部45の外径面には、積層鉄心1の内側に設けられるキー突起を収容可能な逃げ部49が設けられるため、キー突起5を備えた分割鉄心片2をも確実に保持することができる。   Further, since the outer diameter surface of the inner clamping portion 45 is provided with a relief portion 49 that can accommodate the key protrusion provided inside the laminated core 1, the split core piece 2 including the key protrusion 5 is also securely held. can do.

<第2実施形態>
図14は、第2実施形態に係る積層鉄心の製造装置の環状積層カシメステーションを示す平面図、図15は、図14のXV−XV線に沿う断面図、図16は、図14のXVI−XVI線に沿う断面図である。なお、第1の実施形態と同様の機能を有する部位については同一の符号を使用し、重複を避けるため、その説明を省略する。
Second Embodiment
14 is a plan view showing an annular laminated caulking station of the laminated iron core manufacturing apparatus according to the second embodiment, FIG. 15 is a sectional view taken along line XV-XV in FIG. 14, and FIG. 16 is XVI- in FIG. It is sectional drawing which follows a XVI line. In addition, about the site | part which has the same function as 1st Embodiment, the same code | symbol is used and in order to avoid duplication, the description is abbreviate | omitted.

第2実施形態に係る積層鉄心の製造装置50は、ホルダー51および内側挟持部56のみが、第1実施形態に係る積層鉄心の製造装置20と異なる。   The laminated core manufacturing apparatus 50 according to the second embodiment is different from the laminated core manufacturing apparatus 20 according to the first embodiment only in the holder 51 and the inner clamping part 56.

本製造装置50のホルダー51は、図14〜16に示すように、下型23のダイフェース面25における外側挟持部30の半径方向両外側から内側方向へ延びる2つのホルダー外側部52A,52Bと、ホルダー外側部52A,52Bに連結される2つのホルダー吊下げ部53A,53Bと、両ホルダー吊下げ部53A,53Bに連結されるホルダー中央部54を有している。   As shown in FIGS. 14 to 16, the holder 51 of the manufacturing apparatus 50 includes two holder outer portions 52 </ b> A and 52 </ b> B that extend inward from the radially outer sides of the outer clamping portion 30 on the die face surface 25 of the lower mold 23. , Two holder suspension parts 53A and 53B connected to the holder outer parts 52A and 52B, and a holder center part 54 connected to both holder suspension parts 53A and 53B.

第2実施形態におけるホルダー外側部52A,52Bは、第1実施形態におけるホルダー外側部37A,37Bと異なり、両外端部から、被加工板Wの幅Lよりも外側かつ、製造される積層鉄心1の外径D2よりも内側まで延在している。   The holder outer portions 52A and 52B in the second embodiment are different from the holder outer portions 37A and 37B in the first embodiment, and are manufactured outside the width L of the work plate W from both outer end portions and are manufactured. 1 extends to the inner side of the outer diameter D2.

ホルダー吊下げ部53A,53Bは、ホルダー外側部52A,52Bの内側端部に連結され、ホルダー外側部52A,52Bから、上型22から下型23へ向う方向である打ち抜き方向へ延びて形成されている。したがって、ホルダー吊下げ部53A,53B全体が、被加工板Wの幅Lよりも外側かつ積層鉄心1の外径D2よりも内側に位置している(図16参照)。   The holder suspension parts 53A and 53B are connected to the inner ends of the holder outer parts 52A and 52B, and are formed to extend from the holder outer parts 52A and 52B in a punching direction that is a direction from the upper mold 22 to the lower mold 23. ing. Therefore, the entire holder suspensions 53A and 53B are located outside the width L of the workpiece plate W and inside the outer diameter D2 of the laminated core 1 (see FIG. 16).

ホルダー中央部54は、両端部が両ホルダー吊下げ部53A,53Bの下端部(打ち抜き方向端部)に連結されて形成される。ホルダー中央部54の上面58は、ダイフェース面25と同一面もしくはダイフェース面25よりも下方に位置し、ホルダー吊下げ部53A,53Bが被加工板Wの幅Lよりも外側に位置する。したがって、第1実施形態と同様に、打ち抜き加工の際に下面がダイフェース面25と一致する被加工板Wが、ホルダー51と干渉しない。   The holder center portion 54 is formed by connecting both end portions to the lower end portions (end portions in the punching direction) of the holder suspension portions 53A and 53B. The upper surface 58 of the holder central portion 54 is located on the same surface as the die face surface 25 or below the die face surface 25, and the holder suspension portions 53 A and 53 B are located outside the width L of the work plate W. Therefore, as in the first embodiment, the work plate W whose lower surface coincides with the die face surface 25 does not interfere with the holder 51 during punching.

ホルダー中央部54は、下面側に回転軸55が形成され、この回転軸55に、内側挟持部56が回転可能に保持されている。内側挟持部56は、積層鉄心1の内周面と対応する外周面を有する円形の部材である。内側挟持部56の外周面が形成される外周部57は、当該外周部57の上方にホルダー吊下げ部53A,53Bが配置されるため、第1実施形態と異なり、ダイフェース面25よりも下方に位置する。したがって、第2実施形態では、打ち抜きの際に、外径打ち抜きポンチ29の押し込み量が、第1実施形態の場合よりも深くなる。   The holder central portion 54 has a rotation shaft 55 formed on the lower surface side, and the inner clamping portion 56 is rotatably held by the rotation shaft 55. The inner clamping part 56 is a circular member having an outer peripheral surface corresponding to the inner peripheral surface of the laminated core 1. Unlike the first embodiment, the outer peripheral portion 57 where the outer peripheral surface of the inner clamping portion 56 is formed is lower than the die face surface 25, unlike the first embodiment because the holder suspension portions 53A and 53B are disposed above the outer peripheral portion 57. Located in. Therefore, in the second embodiment, when punching, the pushing amount of the outer diameter punching punch 29 becomes deeper than in the case of the first embodiment.

第2実施形態に係る積層鉄心の製造装置50によれば、ホルダー51のホルダー吊下げ部53A,53Bの幅が、第1実施形態のホルダー吊下げ部38A,38Bよりも広くなり、ホルダー51の剛性を向上させることができる。これにより、ホルダー51に連結される内側挟持部56をより堅固に設けることができ、外側挟持部30と内側挟持部56の間に分割鉄心片2をより安定して挟持し、高精度な積層鉄心1の製造が可能となる。   According to the laminated core manufacturing apparatus 50 according to the second embodiment, the width of the holder suspensions 53A and 53B of the holder 51 is wider than that of the holder suspensions 38A and 38B of the first embodiment. Stiffness can be improved. Thereby, the inner clamping part 56 connected to the holder 51 can be provided more firmly, and the divided core piece 2 can be more stably clamped between the outer clamping part 30 and the inner clamping part 56, and high-precision lamination can be achieved. The iron core 1 can be manufactured.

<第3実施形態>
図17は、第3実施形態に係る積層鉄心の製造装置の環状積層カシメステーションを示す平面図、図18は、図17のXVIII−XVIII線に沿う断面図である。なお、第1,第2の実施形態と同様の機能を有する部位については同一の符号を使用し、重複を避けるため、その説明を省略する。
<Third Embodiment>
17 is a plan view showing an annular laminated caulking station of the laminated core manufacturing apparatus according to the third embodiment, and FIG. 18 is a cross-sectional view taken along line XVIII-XVIII in FIG. In addition, about the site | part which has the same function as 1st, 2nd embodiment, the same code | symbol is used and in order to avoid duplication, the description is abbreviate | omitted.

第3実施形態に係る積層鉄心の製造装置60は、図17,18に示すように、第2実施形態に係る積層鉄心の製造装置50と略同様であり、第2実施形態のホルダー51の固定方法のみが異なる。   The laminated iron core manufacturing apparatus 60 according to the third embodiment is substantially the same as the laminated iron core manufacturing apparatus 50 according to the second embodiment, as shown in FIGS. 17 and 18, and fixing the holder 51 of the second embodiment. Only the method is different.

第3実施形態に係る積層鉄心の製造装置60のホルダー51は、両端部に打ち抜き方向上方へ延びる固定軸61に固定されており、この固定軸61が、上型22に形成される摺動孔62に摺動可能に挿通している。固定軸61の上端には、摺動孔62よりも径の大きい大径部63が形成され、この大径部63が、上型内に形成されて摺動孔62と連通する空間部64に位置している。   The holder 51 of the laminated core manufacturing apparatus 60 according to the third embodiment is fixed to both ends of a fixed shaft 61 extending upward in the punching direction. The fixed shaft 61 is a sliding hole formed in the upper die 22. 62 is slidably inserted. A large-diameter portion 63 having a diameter larger than that of the sliding hole 62 is formed at the upper end of the fixed shaft 61, and the large-diameter portion 63 is formed in the space 64 that is formed in the upper mold and communicates with the sliding hole 62. positioned.

上型22が下型23から離れている際には、大径部63が空間部64の下壁面に接して、固定軸61によりホルダー51が吊り下げられる。上型22が下型23へ近接すると、固定軸61が摺動孔62を摺動し、ホルダー51の両端が下型23のダイフェース面25と接し、打ち抜き可能な位置に配置される。このとき、固定軸61が摺動孔62内を摺動可能であるため、所定ストローク範囲内でプレス加工を繰り返しても、ホルダー51が下型23と接したまま一定の位置に保持される。   When the upper mold 22 is separated from the lower mold 23, the large-diameter portion 63 is in contact with the lower wall surface of the space portion 64, and the holder 51 is suspended by the fixed shaft 61. When the upper die 22 comes close to the lower die 23, the fixed shaft 61 slides in the sliding hole 62, and both ends of the holder 51 are in contact with the die face surface 25 of the lower die 23, and are arranged at positions where punching is possible. At this time, since the fixed shaft 61 is slidable in the sliding hole 62, the holder 51 is held in a fixed position while being in contact with the lower mold 23 even if the press work is repeated within a predetermined stroke range.

第3実施形態のように、ホルダー51を下型側ではなく、上型側に連結した構造としても、外側挟持部30と内側挟持部56の間に分割鉄心片2を挟持しつつ回転させて、積層鉄心1を製造できる。   As in the third embodiment, even if the holder 51 is connected to the upper die side instead of the lower die side, the divided core piece 2 is rotated while being held between the outer holding portion 30 and the inner holding portion 56. The laminated core 1 can be manufactured.

なお、第1実施形態のホルダー36を、第3実施形態のように上型側に連結する構造とすることもできる。   The holder 36 of the first embodiment can be structured to be connected to the upper mold side as in the third embodiment.

<第4実施形態>
図19は、第4実施形態に係る積層鉄心の製造装置の環状積層カシメステーションを示す平面図、図20は、図19のXX−XX線に沿う断面図、図21は、図19のXXI−XXI線に沿う断面図、図22は、図19のXXII−XXII線に沿う断面図である。なお、第1の実施形態と同様の機能を有する部位については同一の符号を使用し、重複を避けるため、その説明を省略する。
<Fourth embodiment>
19 is a plan view showing an annular laminated caulking station of the laminated core manufacturing apparatus according to the fourth embodiment, FIG. 20 is a sectional view taken along line XX-XX in FIG. 19, and FIG. 21 is XXI- in FIG. FIG. 22 is a cross-sectional view taken along the line XXII-XXII in FIG. 19. In addition, about the site | part which has the same function as 1st Embodiment, the same code | symbol is used and in order to avoid duplication, the description is abbreviate | omitted.

第4実施形態に係る積層鉄心の製造装置70は、図19〜22に示すように、外径打ち抜きポンチ29の下方に、下型23に回転可能に嵌合する筒状(環状)の外側挟持部71が設けられる。外側挟持部71は、下方側の外周部の外径が大きく形成されており、この下方にダイバッキング74が設けられて、ダイバッキング74により外側挟持部71の下端が保持されている。外側挟持部71の上方(上型側)には、被加工板Wの搬入側(図19,20の左側)にダイ刃80が配置され、搬出側(図19,20の右側)にはホルダー72が配置されている。ダイ刃80は、外径打ち抜きポンチ29と対となって分割鉄心片2の外径面の輪郭を打ち抜く役割を果たす。したがって、第1〜第3実施形態とは異なり、外側挟持部71の上側の縁部は、ダイ刃として機能しない。   As shown in FIGS. 19 to 22, the laminated iron core manufacturing apparatus 70 according to the fourth embodiment has a cylindrical (annular) outer pinch that is rotatably fitted to the lower mold 23 below the outer diameter punching punch 29. A portion 71 is provided. The outer pinching portion 71 is formed such that the outer diameter of the lower outer peripheral portion is large, a die backing 74 is provided below the outer pinching portion 71, and the lower end of the outer pinching portion 71 is held by the die backing 74. Above the outer clamping part 71 (on the upper mold side), a die blade 80 is arranged on the carry-in side (left side in FIGS. 19 and 20) of the work plate W, and on the carry-out side (right side in FIGS. 19 and 20) 72 is arranged. The die blade 80 plays a role of punching the outline of the outer diameter surface of the split iron core piece 2 as a pair with the outer diameter punching punch 29. Therefore, unlike the first to third embodiments, the upper edge portion of the outer clamping portion 71 does not function as a die blade.

本製造装置70のホルダー72は、上型22と対向する上面73が、下型23のダイフェース面25と一致するように、ダイフェース面25に形成される段差部74に嵌合するように配置される。なお、ホルダー72の上面73が、下型23のダイフェース面25より低くてもよい。   The holder 72 of the manufacturing apparatus 70 is fitted to a stepped portion 74 formed on the die face surface 25 so that the upper surface 73 facing the upper die 22 coincides with the die face surface 25 of the lower die 23. Be placed. The upper surface 73 of the holder 72 may be lower than the die face surface 25 of the lower mold 23.

ホルダー72は、下型23のダイ刃80よりも搬出側で、外径打ち抜きポンチ29および打ち抜かれる分割鉄心片2が打ち抜き方向へ出入り可能な開口部75を除き、外側挟持部71の上側全体を覆っている。このように、第4実施形態のホルダー72は、ダイフェース面25と同一面もしくは下方に形成され、第1〜第3実施形態のホルダー72よりも全体的に薄く形成されるが、面積を大きくすることで、剛性を確保することができる。   The holder 72 is located on the carry-out side of the die blade 80 of the lower die 23, except for the outer diameter punching punch 29 and the opening 75 where the divided core piece 2 to be punched can enter and exit in the punching direction. Covering. As described above, the holder 72 according to the fourth embodiment is formed on the same plane as or below the die face surface 25 and is generally thinner than the holder 72 according to the first to third embodiments. By doing so, rigidity can be ensured.

ホルダー72の下面側には、止めネジ76により回転軸77が固定され、この回転軸77に、内側挟持部78が回転可能に連結されている。内側挟持部78は、積層鉄心1の内周面と対応する外周面を有する円形の部材である。内側挟持部78の外周面が形成される外周部79は、当該外周部79の上方にホルダー72が配置されるため、第1実施形態と異なり、ダイフェース面25よりも下方に位置する。したがって、打ち抜きの際には、外径打ち抜きポンチ29の押し込み量が、第1実施形態の場合よりも深くなる。   A rotation shaft 77 is fixed to the lower surface side of the holder 72 by a set screw 76, and an inner clamping portion 78 is rotatably connected to the rotation shaft 77. The inner clamping portion 78 is a circular member having an outer peripheral surface corresponding to the inner peripheral surface of the laminated core 1. Unlike the first embodiment, the outer peripheral portion 79 where the outer peripheral surface of the inner sandwiching portion 78 is formed is positioned below the die face surface 25, unlike the first embodiment. Therefore, at the time of punching, the pushing amount of the outer diameter punching punch 29 becomes deeper than in the case of the first embodiment.

第4実施形態に係る積層鉄心の製造装置70によれば、被加工板Wや積層鉄心1の寸法上の関係から、第1〜第3実施形態のようなホルダー吊下げ部を形成する領域が存在しないか狭い場合であっても、ホルダー吊下げ部を設けることなしに、ホルダー72を形成できる。したがって、本製造装置70によっても、外側挟持部71と内側挟持部78の間に打ち抜かれた分割鉄心片2を挟持しつつ回転させて、積層鉄心1を製造できる。   According to the laminated core manufacturing apparatus 70 according to the fourth embodiment, the region for forming the holder suspension as in the first to third embodiments is obtained from the dimensional relationship of the work plate W and the laminated core 1. Even if it is not present or narrow, the holder 72 can be formed without providing the holder suspension. Therefore, also with this manufacturing apparatus 70, the laminated core 1 can be manufactured by rotating while sandwiching the divided core piece 2 punched between the outer sandwiching portion 71 and the inner sandwiching portion 78.

<第5実施形態>
図23は、第5実施形態に係る積層鉄心の製造装置の環状積層カシメステーションを示す平面図、図24は、図23のXXIV−XXIV線に沿う積層初期の断面図、図25は、図23のXXV−XXV線に沿う積層初期の断面図、図26は、積層が進んだ際の図24に対応する断面図、図27は、積層が進んだ際の図25に対応する断面図である。なお、第1の実施形態と同様の機能を有する部位については同一の符号を使用し、重複を避けるため、その説明を省略する。
<Fifth Embodiment>
FIG. 23 is a plan view showing an annular laminated crimping station of the laminated core manufacturing apparatus according to the fifth embodiment, FIG. 24 is a sectional view at the initial stage of lamination along the line XXIV-XXIV in FIG. 23, and FIG. FIG. 26 is a cross-sectional view corresponding to FIG. 24 when the stacking progresses, and FIG. 27 is a cross-sectional view corresponding to FIG. 25 when the stacking progresses. . In addition, about the site | part which has the same function as 1st Embodiment, the same code | symbol is used and in order to avoid duplication, the description is abbreviate | omitted.

第5実施形態に係る積層鉄心の製造装置90は、図23〜25に示すように、内側挟持部91および回転台92が、第1実施形態に係る積層鉄心の製造装置20と異なる。   As shown in FIGS. 23 to 25, the laminated core manufacturing apparatus 90 according to the fifth embodiment is different from the laminated core manufacturing apparatus 20 according to the first embodiment in the inner clamping portion 91 and the turntable 92.

本製造装置90の内側挟持部91は、下方の回転台方向へ向って延在する連結軸93を有している。連結軸93の下方には、キー溝95が形成されている。   The inner clamping portion 91 of the manufacturing apparatus 90 includes a connecting shaft 93 that extends toward the lower turntable. A key groove 95 is formed below the connecting shaft 93.

回転台92には、内側挟持部91の連結軸93が嵌合可能な連結孔94が形成されており、連結孔94には、連結軸93のキー溝95に嵌合するキー96が形成されている。回転台92は、外側挟持部30と同期して回転する。   The turntable 92 is formed with a connection hole 94 into which the connection shaft 93 of the inner clamping portion 91 can be fitted. A key 96 that fits into the key groove 95 of the connection shaft 93 is formed in the connection hole 94. ing. The turntable 92 rotates in synchronization with the outer clamping unit 30.

本装置90による分割鉄心片2の積層の初期に回転台92が上方に位置する際には、図24,25のように連結軸93と連結孔94が互いに連結して回転方向に固定的となっている。この後、分割鉄心片2の積層が進み回転台92が下方へ移動すると、図26,27のように連結軸93が連結孔94から離れる。すなわち、分割鉄心片2が環状に並んでいない初期の状態では、回転台92により内側挟持部91を回転させ、分割鉄心片2の積層が進むと、積層された分割鉄心片2を介して回転力を受けて、内側挟持部91が外側挟持部30の回転に追従することとなる。   When the turntable 92 is positioned upward in the initial stage of stacking the divided core pieces 2 by the apparatus 90, the connecting shaft 93 and the connecting hole 94 are connected to each other and fixed in the rotational direction as shown in FIGS. It has become. Thereafter, when the divided core pieces 2 are stacked and the turntable 92 moves downward, the connecting shaft 93 is separated from the connecting hole 94 as shown in FIGS. That is, in the initial state where the divided core pieces 2 are not arranged in a ring shape, the inner clamping portion 91 is rotated by the turntable 92, and when the divided core pieces 2 are stacked, the divided core pieces 2 are rotated through the stacked divided core pieces 2. Under the force, the inner clamping portion 91 follows the rotation of the outer clamping portion 30.

内側挟持部91および外側挟持部30に挟持される分割鉄心片2の上方側には、ホルダー36に固定される入口側保持部97が設けられる。入口側保持部97は、内側挟持部91と外側挟持部30の間の隙間を部分的に覆い、外径打ち抜きポンチ29が下方側(ダイス側)へ出入り可能な構造となっている。   An inlet side holding portion 97 fixed to the holder 36 is provided on the upper side of the divided core piece 2 held between the inner holding portion 91 and the outer holding portion 30. The entrance side holding part 97 partially covers the gap between the inner side holding part 91 and the outer side holding part 30, and has a structure in which the outer diameter punching punch 29 can go in and out downward (die side).

第5実施形態に係る積層鉄心の製造装置90によれば、分割鉄心片2が環状に並んでいない初期の状態では、回転台92により内側挟持部91を回転させるため、内側挟持部91の回転を安定させることができる。また、分割鉄心片2の積層が進むと、分割鉄心片2を介して内側挟持部91に伝わる回転力が安定するため、回転台92を内側挟持部91から離して昇降させて、プレス動作を停止する必要なしに、製造された積層鉄心1を搬出することができる。   According to the laminated core manufacturing apparatus 90 according to the fifth embodiment, in the initial state where the divided core pieces 2 are not arranged in a ring shape, the inner clamping portion 91 is rotated by the turntable 92, and therefore the inner clamping portion 91 is rotated. Can be stabilized. Further, as the lamination of the divided core pieces 2 proceeds, the rotational force transmitted to the inner clamping portion 91 via the divided core pieces 2 is stabilized. Therefore, the rotary table 92 is moved up and down away from the inner clamping portion 91 to perform the pressing operation. The manufactured laminated core 1 can be carried out without having to stop.

また、内側挟持部91と外側挟持部30の間に挟持される分割鉄心片2の上型側に入口側保持部97が設けられるため、打ち抜かれた分割鉄心片2が内側挟持部91と外側挟持部30の間に差し込まれる際に、差し込まれる位置と異なる周方向の位置に挟持された他の分割鉄心片2が、上方側へ戻る現象を抑制できる。なお、入口側保持部97は、ホルダー36ではなく、下型23に直接連結されてもよい。また、キー96とキー溝95の配置が逆になってもよい。   Moreover, since the entrance side holding part 97 is provided in the upper mold | type side of the division | segmentation iron core piece 2 clamped between the inner side clamping part 91 and the outer side clamping part 30, the punched division | segmentation iron core piece 2 is the outer side clamping part 91 and outer side. When being inserted between the holding portions 30, it is possible to suppress a phenomenon in which the other divided core pieces 2 held at positions in the circumferential direction different from the insertion position return to the upper side. The inlet side holding portion 97 may be directly connected to the lower mold 23 instead of the holder 36. Further, the arrangement of the key 96 and the key groove 95 may be reversed.

なお、本発明は上述した実施の形態に限定されるものではなく、特許請求の範囲の範囲内で種々改変することができる。例えば、強度が確保できれば、第1〜第4実施形態の内側挟持部45,56,68,78の外周の縁部をダイ刃とし、または第5実施形態の入口側保持部97の縁部をダイ刃として、分割鉄心片2の内面側の輪郭を打ちぬいてもよい。   The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the claims. For example, if the strength can be secured, the outer peripheral edge of the inner clamping parts 45, 56, 68, 78 of the first to fourth embodiments is a die blade, or the edge of the inlet side holding part 97 of the fifth embodiment is used. As the die blade, the contour on the inner surface side of the divided core piece 2 may be punched out.

また、上記第1〜第5実施形態では、磁石が挿入されて回転するロータを用いて説明したが、本発明を、コイルが巻きつけられて構成されているステータの製造の場合に適用しても同様の効果が得られる。   Moreover, in the said 1st-5th embodiment, although demonstrated using the rotor by which a magnet is inserted, it applies this invention in the case of manufacture of the stator comprised by winding a coil. The same effect can be obtained.

また、分割鉄心片2は、かならずしも円弧状でなくてもよく、更に、磁石装着孔4やカシメ部6の数が異なってもよい。   Moreover, the division | segmentation iron core piece 2 does not necessarily need to be circular arc shape, Furthermore, the number of the magnet mounting holes 4 and the crimping | crimped part 6 may differ.

また、外側挟持部の内径面および内側挟持部の外径面は、かならずしも積層鉄心1の輪郭に完全に一致する必要はなく、少なくとも一部を挟持できる形状であればよい。   Further, the inner diameter surface of the outer sandwiching portion and the outer diameter surface of the inner sandwiching portion do not necessarily need to completely match the outline of the laminated core 1, and may be any shape that can sandwich at least a part thereof.

第1実施形態に係る積層鉄心の製造装置により製造された積層鉄心を示す平面図である。It is a top view which shows the laminated iron core manufactured with the manufacturing apparatus of the laminated iron core which concerns on 1st Embodiment. 積層鉄心を示す側面図である。It is a side view which shows a laminated iron core. 図1のIII−III線に沿う単一層の断面図である。It is sectional drawing of the single layer in alignment with the III-III line of FIG. 第1実施形態に係る積層鉄心の製造装置を示す平面図である。It is a top view which shows the manufacturing apparatus of the laminated iron core which concerns on 1st Embodiment. 第1実施形態に係る製造装置の積層カシメステーションを示す平面図である。It is a top view which shows the lamination | stacking crimping station of the manufacturing apparatus which concerns on 1st Embodiment. 図5のVI−VI線に沿う断面図である。It is sectional drawing which follows the VI-VI line of FIG. 図5のVII−VII線に沿う断面図である。It is sectional drawing which follows the VII-VII line of FIG. 第1実施形態に係る製造装置の積層カシメステーションを示す拡大平面図である。It is an enlarged plan view which shows the lamination | stacking crimping station of the manufacturing apparatus which concerns on 1st Embodiment. 第1実施形態に係る積層鉄心の製造装置により最下層の3つの分割鉄心片を積層した際を示す平面図である。It is a top view which shows the time of laminating | stacking three division | segmentation iron core pieces of the lowest layer with the manufacturing apparatus of the laminated iron core which concerns on 1st Embodiment. 第1実施形態に係る製造装置により最下層の4つの分割鉄心片を積層した際を示す平面図である。It is a top view which shows the time of laminating | stacking the lowermost four division | segmentation core pieces with the manufacturing apparatus which concerns on 1st Embodiment. 第1実施形態に係る製造装置により最下層から次の層の1つ目の分割鉄心片を積層した際を示す平面図である。It is a top view which shows the time of laminating | stacking the 1st division | segmentation core piece of the next layer from the lowest layer with the manufacturing apparatus which concerns on 1st Embodiment. 第1実施形態に係る製造装置により最下層から次の層の2つ目の分割鉄心片を積層した際を示す平面図である。It is a top view which shows the time of laminating | stacking the 2nd division | segmentation core piece of the next layer from the lowest layer with the manufacturing apparatus which concerns on 1st Embodiment. 積層されて重なる分割鉄心片同士がカシメ結合される際を示す部分断面図である。It is a fragmentary sectional view which shows when the division | segmentation iron core pieces laminated | stacked and overlapped are crimped. 第2実施形態に係る積層鉄心の製造装置の環状積層カシメステーションを示す平面図である。It is a top view which shows the cyclic | annular lamination crimping station of the manufacturing apparatus of the laminated iron core which concerns on 2nd Embodiment. 図14のXV−XV線に沿う断面図である。It is sectional drawing which follows the XV-XV line | wire of FIG. 図14のXVI−XVI線に沿う断面図である。It is sectional drawing which follows the XVI-XVI line of FIG. 第3実施形態に係る積層鉄心の製造装置の環状積層カシメステーションを示す平面図である。It is a top view which shows the cyclic | annular lamination crimping station of the manufacturing apparatus of the laminated iron core which concerns on 3rd Embodiment. 図17のXVIII−XVIII線に沿う断面図である。It is sectional drawing which follows the XVIII-XVIII line of FIG. 第4実施形態に係る積層鉄心の製造装置の環状積層カシメステーションを示す平面図である。It is a top view which shows the cyclic | annular laminated crimping station of the manufacturing apparatus of the laminated iron core which concerns on 4th Embodiment. 図19のXX−XX線に沿う断面図である。It is sectional drawing which follows the XX-XX line of FIG. 図19のXXI−XXI線に沿う断面図である。It is sectional drawing which follows the XXI-XXI line | wire of FIG. 図19のXXII−XXII線に沿う断面図である。It is sectional drawing which follows the XXII-XXII line | wire of FIG. 第5実施形態に係る積層鉄心の製造装置の環状積層カシメステーションを示す平面図である。It is a top view which shows the cyclic | annular lamination crimping station of the manufacturing apparatus of the laminated core which concerns on 5th Embodiment. 図23のXXIV−XXIV線に沿う積層初期の断面図である。It is sectional drawing of the lamination | stacking initial stage which follows the XXIV-XXIV line | wire of FIG. 図23のXXV−XXV線に沿う積層初期の断面図である。It is sectional drawing of the lamination | stacking initial stage which follows the XXV-XXV line | wire of FIG. 積層が進んだ際の図24に対応する断面図である。FIG. 25 is a cross-sectional view corresponding to FIG. 24 when the lamination progresses. 積層が進んだ際の図25に対応する断面図である。It is sectional drawing corresponding to FIG. 25 when lamination | stacking advanced.

符号の説明Explanation of symbols

1 積層鉄心、
2 分割鉄心片、
3 環状鉄心片、
5 キー突起、
20,50,60,70,90 製造装置、
22 上型(ポンチ側の型)、
23 下型(ダイス側の型)、
25 ダイフェース面、
29 鉄心片抜き打ちポンチ、
30,71 外側挟持部(鉄心片挟持部)、
36,51,72 ホルダー、
38A,38B,52A,52B ホルダー外側部、
38A,38B,53A,53B ホルダー吊下げ部、
39,54 ホルダー中央部、
45,56,68,78,91 内側挟持部(鉄心片挟持部)、
48,92 回転台、
49 逃げ部、
97 入口側保持部、
D1 内径、
D2 外径、
L 幅、
W 被加工板、
α 位相ずれ、
θ 円弧角。
1 laminated iron core,
2 split core pieces,
3 annular core pieces,
5 Key protrusion,
20, 50, 60, 70, 90 production equipment,
22 Upper mold (punch side mold),
23 Lower die (die side die),
25 die face surface,
29 Iron punch punch,
30, 71 outer pinching portion (iron core piece pinching portion),
36, 51, 72 holders,
38A, 38B, 52A, 52B Holder outer side,
38A, 38B, 53A, 53B Holder hanging part,
39,54 Holder center,
45, 56, 68, 78, 91 Inner clamping part (iron core piece clamping part),
48,92 turntable,
49 The escape,
97 Entrance side holding part,
D1 inner diameter,
D2 outer diameter,
L width,
W work board,
α phase shift,
θ Arc angle.

Claims (22)

搬送される被加工板から、環状に複数並ぶことで環状鉄心片を構成する分割鉄心片を順次打ち抜いて環状に並べ、複数の環状鉄心片を位相をずらしつつ積層して積層鉄心とする積層鉄心の製造装置であって、
前記打ち抜かれた各々の分割鉄心片を挟んで保持しつつ回転させることが可能な鉄心片挟持部を有し、
前記鉄心片挟持部は、前記分割鉄心片の環状鉄心片における内径側を保持する内側挟持部および外径側を保持する外側挟持部を有し、
前記外側挟持部は、前記分割鉄心片を打ち抜く金型のダイス側の型に回転可能に設けられる環形状の部材であり、
前記内側挟持部は、前記外側挟持部に対して前記金型のポンチ側に、前記外側挟持部の外径側から内径側へ延在するホルダーに回転可能に保持されて、前記外側挟持部の内径側に位置する積層鉄心の製造装置。
A laminated core that is formed by stacking a plurality of annular core pieces out of phase and forming a laminated core by sequentially punching out the divided core pieces constituting the annular core pieces by arranging them in a ring from the workpiece to be conveyed. Manufacturing equipment,
Having an iron core piece clamping part that can be rotated while holding the punched divided iron core pieces,
The core piece clamping portion has an inner clamping portion that holds an inner diameter side and an outer clamping portion that holds an outer diameter side of the annular core piece of the divided core piece,
The outer clamping portion is a ring-shaped member that is rotatably provided on a die side die of a mold for punching the divided core pieces .
The inner clamping part is rotatably held by a holder extending from the outer diameter side to the inner diameter side of the outer clamping part on the punch side of the mold with respect to the outer clamping part, Equipment for manufacturing laminated iron cores located on the inner diameter side .
前記内側挟持部は、前記分割鉄心片を打ち抜く金型のダイス側の型に回転可能に設けられる請求項1に記載の積層鉄心の製造装置。   The said inner clamping part is a manufacturing apparatus of the laminated core of Claim 1 rotatably provided in the type | mold on the die | dye side of the metal mold | die which punches out the said division | segmentation iron core piece. 前記被加工板の搬送方向と交差する方向の幅が、製造される積層鉄心の内径よりも小さい請求項1または2に記載の積層鉄心の製造装置。  The apparatus for manufacturing a laminated core according to claim 1 or 2, wherein a width in a direction intersecting with a conveying direction of the processed plate is smaller than an inner diameter of the manufactured laminated core. 前記ホルダーは、前記ダイス側の型から前記外側挟持部の内径側方向へ延在するホルダー外側部と、  The holder includes a holder outer part extending from the die side mold toward the inner diameter side of the outer clamping part, and
前記外側挟持部の内径側で前記ホルダー外側部に連結されて、前記分割鉄心片を打ち抜く際の打ち抜き方向へ延在するホルダー吊下げ部と、  A holder hanging part connected to the holder outer part on the inner diameter side of the outer clamping part and extending in a punching direction when punching the split core pieces;
前記ホルダー吊下げ部から延在し、打ち抜きの際に前記被加工板が接する前記ダイス側の型のダイフェース面と同一面またはダイフェース面よりも打ち抜き方向側に位置するとともに、前記内側挟持部が回転可能に保持されるホルダー中央部と、を有する請求項1〜3のいずれか1項に記載の積層鉄心の製造装置。  Extending from the holder suspending portion and is located on the same side as the die face surface of the die side die that contacts the workpiece plate during punching or on the punching direction side of the die face surface, and the inner clamping portion The manufacturing apparatus of the laminated core of any one of Claims 1-3 which has a holder center part with which is hold | maintained so that rotation is possible.
前記ホルダーの全体が、打ち抜きの際に前記被加工板が接する前記ダイス側の型のダイフェース面と同一面または、ダイフェース面よりも前記分割鉄心片を打ち抜く際の打ち抜き方向側に位置する請求項1〜3のいずれか1項に記載の積層鉄心の製造装置。  The whole of the holder is located on the same side as the die face surface of the die side die that the workpiece plate contacts at the time of punching, or on the punching direction side when punching the divided core pieces from the die face surface. The manufacturing apparatus of the laminated iron core of any one of claim | item 1-3. 前記ホルダーは、前記ポンチがダイス側へ出入り可能な構造を有する請求項1〜5のいずれか1項に記載の積層鉄心の製造装置。  The laminated iron core manufacturing apparatus according to any one of claims 1 to 5, wherein the holder has a structure in which the punch can move in and out of the die. 前記外側挟持部は、前記積層鉄心の外径側の形状に対応した形状を有する請求項1〜6のいずれか1項に記載の積層鉄心の製造装置。  The laminated iron core manufacturing apparatus according to any one of claims 1 to 6, wherein the outer holding portion has a shape corresponding to a shape on an outer diameter side of the laminated iron core. 前記内側挟持部は、前記積層鉄心の内径側の形状に対応した形状を有する請求項1〜7のいずれか1項に記載の積層鉄心の製造装置。  The said inner side clamping part is a manufacturing apparatus of the laminated core of any one of Claims 1-7 which has a shape corresponding to the shape of the internal diameter side of the said laminated iron core. 前記内側挟持部は、前記積層鉄心の内径側に設けられる突起を収容可能な逃げ部を有する請求項1〜8のいずれか1項に記載の積層鉄心の製造装置。  The laminated iron core manufacturing apparatus according to any one of claims 1 to 8, wherein the inner clamping portion has a relief portion capable of accommodating a protrusion provided on an inner diameter side of the laminated iron core. 前記鉄心片挟持部に挟持された分割鉄心片に対して、当該分割鉄心片を打ち抜く金型のポンチ側に配され、かつ前記ポンチがダイス側へ出入り可能な構造を備えた入口側保持部を有する、請求項1〜9のいずれか1項に記載の積層鉄心の製造装置。  An inlet-side holding portion provided on the punch side of a die for punching the split core piece with respect to the split core piece held by the core piece holding portion, and having a structure in which the punch can enter and exit the die side. The manufacturing apparatus of the laminated iron core of any one of Claims 1-9 which have. 前記鉄心片挟持部に対して前記分割鉄心片を打ち抜く際の打ち抜き方向側に配され、回転可能かつ前記内側挟持部と近接離隔可能に配される回転台を有し、  It is arranged on the punching direction side when punching out the divided core pieces with respect to the iron piece holding portion, and has a turntable that is rotatable and arranged so as to be close to and away from the inner holding portion,
前記内側挟持部および前記回転台が、互いに回転方向に固定的に連結可能であり、離隔することで当該回転方向の連結が解除される構造を有する、請求項1〜10のいずれか1項に記載の積層鉄心の製造装置。  The said inner clamping part and the said turntable can be fixedly connected to each other in the rotational direction, and have a structure in which the connection in the rotational direction is released by separating the inner sandwiching part and the rotary base. The manufacturing apparatus of the laminated iron core of description.
搬送される被加工板から、環状に複数並ぶことで環状鉄心片を構成する分割鉄心片を順次打ち抜いて環状に並べ、複数の環状鉄心片を位相をずらしつつ積層して積層鉄心とする積層鉄心の製造方法であって、  A laminated core that is formed by stacking a plurality of annular core pieces out of phase and forming a laminated core by sequentially punching out the divided core pieces constituting the annular core pieces by arranging them in a ring from the workpiece to be conveyed. A manufacturing method of
前記打ち抜かれた各々の分割鉄心片を挟持することが可能な鉄心片挟持部により、前記分割鉄心片の各々を挟んで保持しつつ回転させて、環状に並べつつ積層し、  With the core piece holding part capable of holding each of the punched divided core pieces, rotating while holding each of the split core pieces, and laminating them while arranging them in an annular shape,
前記鉄心片挟持部は、前記分割鉄心片の環状鉄心片における内径側を保持する内側挟持部および外径側を保持する外側挟持部の間に、前記分割鉄心片を挟持し、  The core piece clamping portion sandwiches the divided core piece between an inner clamping portion that holds an inner diameter side and an outer clamping portion that holds an outer diameter side of the annular core piece of the divided core piece,
前記外側挟持部を、前記分割鉄心片を打ち抜く金型のダイス側の型に回転可能に設けられる環形状の部材とし、  The outer holding portion is a ring-shaped member that is rotatably provided on a die side die of a die for punching the divided core pieces,
前記内側挟持部を、前記外側挟持部に対して前記金型のポンチ側に、前記外側挟持部の外径側から内径側へ延在するホルダーに回転可能に保持して、前記外側挟持部の内径側に配置した積層鉄心の製造方法。  The inner clamping part is rotatably held by a holder extending from the outer diameter side to the inner diameter side of the outer clamping part on the punch side of the mold with respect to the outer clamping part. A method of manufacturing a laminated core disposed on the inner diameter side.
前記内側挟持部を、前記分割鉄心片を打ち抜く金型のダイス側の型に回転可能に設ける請求項12に記載の積層鉄心の製造方法。  The manufacturing method of the laminated core of Claim 12 which provides the said inner side clamping part rotatably to the type | mold on the die side of the metal mold | die which punches out the said division | segmentation iron core piece. 前記製造される積層鉄心の内径よりも、搬送方向と交差する方向の幅が小さい被加工板を用いる請求項12または13に記載の積層鉄心の製造方法。  The manufacturing method of the laminated core of Claim 12 or 13 using the to-be-processed board whose width | variety of the direction which cross | intersects a conveyance direction is smaller than the internal diameter of the said laminated iron core manufactured. 前記ホルダーを、前記ダイス側の型から前記外側挟持部の内径側方向へ延在するホルダー外側部と、  A holder outer portion extending from the die side mold toward the inner diameter side of the outer clamping portion;
前記外側挟持部の内径側で前記ホルダー外側部に連結されて、前記分割鉄心片を打ち抜く際の打ち抜き方向へ延在するホルダー吊下げ部と、  A holder hanging part connected to the holder outer part on the inner diameter side of the outer clamping part and extending in a punching direction when punching the split core pieces;
前記ホルダー吊下げ部から延在し、打ち抜きの際に前記被加工板が接する前記ダイス側の型のダイフェース面と同一面またはダイフェース面よりも打ち抜き方向側に位置するホルダー中央部と、  A holder central portion that extends from the holder suspension and is located on the same side as the die face surface of the die-side die that contacts the workpiece plate during punching or on the punching direction side of the die face surface;
を有して構成し、当該ホルダー中央部に前記内側挟持部を回転可能に保持する請求項12〜14のいずれか1項に記載の積層鉄心の製造方法。  The method for manufacturing a laminated iron core according to any one of claims 12 to 14, wherein the inner holding part is rotatably held at the center part of the holder.
前記ホルダーの全体を、打ち抜きの際に前記被加工板が接する前記ダイス側の型のダイフェース面と同一面または、ダイフェース面よりも前記分割鉄心片を打ち抜く際の打ち抜き方向側に配置した、請求項12〜14のいずれか1項に記載の積層鉄心の製造方法。  The entire holder is disposed on the same side as the die face surface of the die side die that the workpiece plate contacts at the time of punching, or on the punching direction side when punching the divided core pieces from the die face surface. The manufacturing method of the laminated iron core of any one of Claims 12-14. 前記ホルダーを、前記ポンチがダイス側へ出入り可能な構造とした、請求項12〜16のいずれか1項に記載の積層鉄心の製造方法。  The manufacturing method of the laminated iron core of any one of Claims 12-16 which made the said holder the structure where the said punch can enter / exit to the die | dye side. 前記外側挟持部を、前記積層鉄心の外径側の形状に対応する形状とした、請求項12〜17のいずれか1項に記載の積層鉄心の製造方法。  The manufacturing method of the laminated core of any one of Claims 12-17 which made the said outer side clamping part the shape corresponding to the shape by the side of the outer diameter of the said laminated iron core. 前記内側挟持部を、前記積層鉄心の内径側の形状に対応する形状とした、請求項12〜18のいずれか1項に記載の積層鉄心の製造方法。  The manufacturing method of the laminated core of any one of Claims 12-18 which made the said inner side clamping part the shape corresponding to the shape of the internal diameter side of the said laminated iron core. 前記内側挟持部に、前記積層鉄心の内径側に設けられる突起を収容可能な逃げ部を設けた請求項12〜19のいずれか1項に記載の積層鉄心の製造方法。  The method for manufacturing a laminated core according to any one of claims 12 to 19, wherein a relief portion capable of accommodating a protrusion provided on an inner diameter side of the laminated core is provided in the inner sandwiching portion. 前記鉄心片挟持部に挟持された分割鉄心片に対して、当該分割鉄心片を打ち抜く金型のポンチ側に、前記ポンチがダイス側へ出入り可能な構造を備えた入口側保持部を配置した、請求項12〜20のいずれか1項に記載の積層鉄心の製造方法。  With respect to the divided core pieces sandwiched by the core piece sandwiching portion, an inlet side holding portion having a structure that allows the punch to enter and exit the die side is disposed on the punch side of a die for punching the divided core pieces. The manufacturing method of the laminated core of any one of Claims 12-20. 前記鉄心片挟持部に対して前記分割鉄心片を打ち抜く際の打ち抜き方向側に、回転可能であるとともに前記内側挟持部と回転方向に固定的に連結可能であり、かつ前記内側挟持部と近接離隔可能な回転台を配置し、  It is rotatable on the punching direction side when the divided core piece is punched with respect to the iron core piece holding portion, and can be fixedly connected to the inner holding portion in the rotation direction, and is closely spaced from the inner holding portion. Place a possible turntable,
前記内側挟持部と回転台を離隔することで、当該回転方向の連結を解除する、請求項12〜21のいずれか1項に記載の積層鉄心の製造方法。  The manufacturing method of the laminated iron core of any one of Claims 12-21 which cancels | releases the connection of the said rotation direction by separating the said inner side clamping part and a turntable.
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