JPH08228460A - Cuttr for press punch die for stator core plate of electric rotary machine - Google Patents
Cuttr for press punch die for stator core plate of electric rotary machineInfo
- Publication number
- JPH08228460A JPH08228460A JP5662295A JP5662295A JPH08228460A JP H08228460 A JPH08228460 A JP H08228460A JP 5662295 A JP5662295 A JP 5662295A JP 5662295 A JP5662295 A JP 5662295A JP H08228460 A JPH08228460 A JP H08228460A
- Authority
- JP
- Japan
- Prior art keywords
- punching
- stator core
- core plate
- inner diameter
- press
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Punching Or Piercing (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、セグメント状に分割
された電気鋼板の内径側に開口部を有するスロット部を
順次周方向に複数個形成してなる回転電機の固定子鉄心
板を製作する単一のプレス打抜型用刃物の構造に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention produces a stator core plate of a rotating electric machine in which a plurality of slot portions each having an opening on the inner diameter side of an electric steel sheet divided into segments are sequentially formed in the circumferential direction. The present invention relates to the structure of a single press punching die.
【０００２】[0002]
【従来の技術】図３はセグメント状の固定子鉄心板を示
すもので、図４は固定子鉄心板を製作するためのプレス
打抜型用刃物の形状図、図５は図４のプレス打抜型用刃
物を用いて固定子鉄心板を製作する説明図である。回転
電機の固定子鉄心は、けい素鋼板からなる薄状の電気鋼
板に固定子絶縁コイルを装着するためのスロット部を形
成した固定子鉄心板を円筒状に積層した構造からなって
いる。この固定子鉄心板の形状は、一枚の電気鋼板から
周方向に複数個のスロット部を一体的にプレス打抜型用
刃物でプレスして固定子鉄心板を形成する総打抜方式
と、一対の上型刃物と下型刃物からなる単一のプレス打
抜型用刃物で電気鋼板の周方向に順次スロット部を設け
る単一打抜方式の二通りがある。固定子鉄心外径が大き
い場合には、電気鋼板を固定子鉄心の周方向に数分割し
たセグメント状（扇形片状）の電気鋼板にスロット部を
プレス打抜型用刃物にて打抜いた図３に示す固定子鉄心
板を作製し、この分割されたセグメント状の固定子鉄心
板２の両端部が集中して重ならないように交互に半分ず
つ重ね合わせ、円形に積層して固定子鉄心を作製する。
なお、スロット部３には、図３に示しあるように、開口
部４の歯部５側に後述するスロット部３に装着された固
定子絶縁コイルを保持するためのくさび用スロット部９
が設けてある。2. Description of the Related Art FIG. 3 shows a segment-shaped stator core plate, FIG. 4 is a shape diagram of a press punching die for manufacturing a stator core plate, and FIG. 5 is a press punching die of FIG. It is explanatory drawing which manufactures a stator core plate using a cutting tool. A stator core of a rotating electric machine has a structure in which a thin electric steel plate made of a silicon steel plate is laminated in a cylindrical shape with stator core plates each having a slot portion for mounting a stator insulating coil. The shape of the stator core plate includes a total punching method of forming a stator core plate by pressing a plurality of slot portions integrally from one electric steel plate in the circumferential direction with a press die for a punching die, and a pair of pairs. There are two types, a single punching method in which a single press punching die consisting of an upper die blade and a lower die blade is provided with slot portions sequentially in the circumferential direction of the electrical steel sheet. When the outer diameter of the stator core is large, the electric steel plate is divided into several segments in the circumferential direction of the stator core (segment-shaped electric steel plate), and the slot portion is punched by a press punching tool. The stator core plate shown in Fig. 2 is manufactured, and the divided segment-shaped stator core plates 2 are alternately superposed on each other so that both ends thereof are not concentrated and overlap each other, and are laminated in a circle to manufacture a stator core. To do.
As shown in FIG. 3, the slot portion 3 has a wedge slot portion 9 for holding a stator insulating coil attached to the slot portion 3 which will be described later on the tooth portion 5 side of the opening portion 4.
Is provided.
【０００３】前記のセグメント状に分割された電気鋼板
にスロット部を構成するための打抜型用刃物によるプレ
ス成形には、前記した総打抜方式と単一打抜方式の両方
式とも適用されるが、固定子鉄心の寸法が通常品と異な
り、固定子鉄心板の数量が多くない場合には、単一のプ
レス打抜型用刃物で固定子鉄心板を製作することが行わ
れる場合がある。図４に示す電気鋼板にスロット部を打
抜く単一のプレス打抜型用刃物１は、断面形状がＬ字状
であり、前記した図３のスロット部３とくさび用スロッ
ト部９を打抜く溝打抜部３ａと、更に右側に突出してい
る内径打抜部８とが設けられている。そしてこのプレス
打抜型用刃物１は、図示しないプレスの上型に固定され
ており、プレスの下型にはプレス打抜型用刃物１に嵌合
する下型刃物が固定されて単一のスロット部打抜型を形
成している。このスロット部打抜型のプレスの上型と下
型の間に電気鋼板を挿入して固定子鉄心板２の内径部の
位置を設定したスロット部３を打抜く。Both the above-mentioned total punching method and the single punching method are applied to the press forming by the punching blade for forming the slot portion on the electric steel sheet divided into the above segment. However, when the size of the stator core is different from that of a normal product and the number of the stator core plates is not large, the stator core plate may be manufactured with a single press punching die. The single press punching die 1 for punching the slot portion on the electrical steel sheet shown in FIG. 4 has an L-shaped cross section, and the groove for punching the slot portion 3 and the wedge slot portion 9 of FIG. 3 described above. A punching portion 3a and an inner diameter punching portion 8 projecting further to the right are provided. The press punching die 1 is fixed to an upper die of a press (not shown), and the lower die of the press is fixed to the lower die of the press to be fitted with a single slot portion. Forming a punching die. An electric steel plate is inserted between the upper die and the lower die of the slot punching die to punch the slot portion 3 in which the position of the inner diameter portion of the stator core plate 2 is set.
【０００４】また、このプレス打抜型用刃物１には、こ
の固定子鉄心板２を積層して形成される固定子鉄心のス
ロット内に固定子絶縁コイルを装着し易いように、図３
の固定子鉄心板２のスロット部３のスロット開口部４の
両側に０．５ｍｍ〜２ｍｍの曲率半径を有する円弧状の
面取部４１，４１を形成するように面取打抜部４ａ，４
ｂを設けてある。Further, in this press-punching die 1, a stator insulating coil can be easily mounted in a slot of a stator core formed by laminating the stator core plate 2 as shown in FIG.
Chamfering punched portions 4a, 4 so as to form arcuate chamfered portions 41, 41 having a radius of curvature of 0.5 mm to 2 mm on both sides of the slot opening 4 of the slot portion 3 of the stator core plate 2 of FIG.
b is provided.
【０００５】次に、図５にて前記した単一のプレス打抜
型用刃物１により電気鋼板の扇形のセグメントから固定
子鉄心板２を製作する方法について説明する。図５に示
す固定子鉄心板２は、まず長尺の電気鋼板帯から内外径
間の幅Ｗがスロット部３打抜後の幅ｗより広い扇形のセ
グメントにプレス切断される。次にこのセグメントに、
固定子鉄心板２の上記幅ｗとなるように、プレス打抜型
用刃物１の内径打抜部８に位置合わせしてスロット部３
（図３）を打抜く。次いで前記のプレス打抜型用刃物１
の内径打抜部８にて打抜かれた部分の図の右端部が、次
の打抜かれるスロット部の幅Ｓの１／４までラップする
位置に電気鋼板を矢印方向に移動して、スロット部３を
打抜く。以下同様に次々と打抜き、スロット開口部４の
両側に所定の面取部４１を有するスロット部３を周方向
に図３のように所定数形成させる。Next, a method of manufacturing the stator core plate 2 from the fan-shaped segment of the electric steel plate by the single press die 1 shown in FIG. 5 will be described. The stator core plate 2 shown in FIG. 5 is first press-cut from a long electric steel strip into a fan-shaped segment in which the width W between the inner and outer diameters is wider than the width w after punching the slot portion 3. Then in this segment,
The slot portion 3 is aligned with the inner diameter punching portion 8 of the press punching die 1 so that the width w of the stator core plate 2 is the above.
Punch (Fig. 3). Next, the above-mentioned press punching die 1
The electric steel sheet is moved in the direction of the arrow to a position where the right end portion of the portion punched by the inner diameter punching portion 8 of FIG. Punch 3 Similarly, punching is performed one after another, and a predetermined number of slot portions 3 having predetermined chamfered portions 41 on both sides of the slot opening portion 4 are formed in the circumferential direction as shown in FIG.
【０００６】[0006]
【発明が解決しようとする課題】回転電機の固定子鉄心
は、前記したようにプレス打抜型用刃物１にて打抜き形
成された固定子鉄心板２を所定枚数積層して作製され
る。このために、直線状の固定子絶縁コイルをスロット
内に装着するためには、固定子鉄心のスロット部３の積
層方向の位置に狂いがなく、かつ打抜かれた固定子鉄心
板２に電気鋼板の微小突起であるバリの発生がないこと
が要求される。即ち、固定子鉄心板２を積層した固定子
鉄心のスロット内面の凹凸の存在は、回転電機の運転時
の振動により固定子絶縁コイルの絶縁層を損傷する。一
方、固定子鉄心板２のバリの存在は、前記した固定子絶
縁コイルの絶縁層の損傷を招くだけでなく、隣接する固
定子鉄心板２との接触による導通により、固定子鉄心板
２に渦電流の増加による部分的な鉄心の過熱を招き、固
定子絶縁コイルの熱劣化を促進する恐れがある。A stator core of a rotary electric machine is manufactured by laminating a predetermined number of stator core plates 2 punched and formed by the press punching tool 1 as described above. For this reason, in order to mount the linear stator insulating coil in the slot, there is no deviation in the position of the slot portion 3 of the stator core in the stacking direction, and the punched stator core plate 2 has an electric steel plate. It is required that no burr, which is a minute protrusion, be generated. That is, the presence of the unevenness on the inner surface of the slot of the stator core in which the stator core plates 2 are laminated damages the insulating layer of the stator insulating coil due to vibration during operation of the rotating electric machine. On the other hand, the presence of burrs on the stator core plate 2 not only causes damage to the insulating layer of the stator insulating coil described above, but also causes conduction to the stator core plate 2 due to contact with the adjacent stator core plate 2, so There is a possibility that the overheating of the iron core may be partially caused by the increase of the eddy current, and the thermal deterioration of the stator insulating coil may be accelerated.
【０００７】ところで、従来のプレス打抜型用刃物１に
て固定子鉄心板２を製作する場合には、スロット開口部
４の両側に設けた面取部４１の曲率半径が同一寸法にな
るように、図４に示すようにプレス打抜型用刃物１の左
右の面取打抜部４ａ及び４ｂを同一寸法としている。従
って、図５に示すこの従来のプレス打抜型用刃物１を使
用して打抜いた固定子鉄心板２の２重斜線部で示した打
抜ラップ部において、面取部４１のラップ部４１ａは、
固定子鉄心板２の内径面２ｂの打抜線上で前記したプレ
ス打抜型用刃物１の面取打抜部４ａに接するために、バ
リが発生する場合があるという問題があった。その結
果、前記した固定子鉄心板２のバリによる固定子コイル
絶縁の損傷及び鉄心の異常過熱を誘発するのを防ぐため
に、バリ取り作業に多大な時間を要していた。By the way, when the stator core plate 2 is manufactured by the conventional press punching tool 1, the chamfered portions 41 provided on both sides of the slot opening 4 have the same radius of curvature. As shown in FIG. 4, the left and right chamfering punched portions 4a and 4b of the press punching die 1 have the same size. Therefore, in the punching lap portion shown by the double hatched portion of the stator core plate 2 punched using the conventional press punching die 1 shown in FIG. 5, the lap portion 41a of the chamfer 41 is ,
There is a problem in that burrs may occur because the stator core plate 2 comes into contact with the chamfered punching portion 4a of the press-die 1 for cutting on the punching line of the inner diameter surface 2b. As a result, in order to prevent damage to the stator coil insulation and abnormal overheating of the iron core due to the burr of the stator core plate 2 described above, it took a lot of time for deburring work.
【０００８】この発明の目的は、前記の課題を解決した
電気鋼板のプレス打抜型用刃物による固定子鉄心板の打
抜き作製において、スロット開口部にバリの発生のない
プレス打抜型用刃物を提供することにある。An object of the present invention is to provide a press punching die which does not cause burrs in a slot opening when punching a stator core plate by a punching die for electric steel plate, which solves the above problems. Especially.
【０００９】[0009]
【課題を解決するための手段】上記した課題を解決する
ために、この発明は、回転電機の固定子鉄心板にスロッ
ト部を打抜くプレス打抜型に用いられ、前記固定子鉄心
板の内径側に開口する溝を打抜く溝打抜部と、前記溝の
開口部両側に円弧状の面取部を打抜く面取打抜部と、一
方の側の前記面取部に連続させて前記固定子鉄心板の内
径面の一部を打抜く内径打抜部とからなる刃部を備え、
前記固定子鉄心板を形成する電気鋼板の扇形のセグメン
トに前記内径打抜部で打抜いた前記内径面に他方の側の
前記面取部をラップさせながら、前記スロット部を一つ
ずつ打抜く単一方式の刃物において、面取打抜部の刃部
の形状を左右非対称とし、固定子鉄心板の内径面にラッ
プさせて面取部を打抜く前記面取打抜部の刃部を、前記
内径面と交差させるように構成するものとする。In order to solve the above-mentioned problems, the present invention is used in a press punching die for punching a slot portion in a stator core plate of a rotary electric machine, and the stator core plate has an inner diameter side. A groove punching part for punching a groove opening to a groove, a chamfering punching part for punching arc-shaped chamfered parts on both sides of the opening of the groove, and the chamfering part on one side, the fixing being continued. It is equipped with a blade part consisting of an inner diameter punching part that punches out a part of the inner diameter surface of the child core plate,
The slot portions are punched one by one while the fan-shaped segment of the electric steel plate forming the stator core plate is lapped with the chamfered portion on the other side on the inner diameter surface punched by the inner diameter punching portion. In a single-type blade, the shape of the chamfering punching blade is asymmetrical, and the chamfering punching blade is punched by wrapping the chamfered portion on the inner diameter surface of the stator core plate. It is configured to intersect with the inner diameter surface.
【００１０】[0010]
【作用】扇形のセグメントの電気鋼板の内径面とスロッ
ト部とを単一のプレス打抜型用形刃物で順次打抜いて形
成する固定子鉄心板の製作においては、左右同一の対称
形状からなるプレス打抜形刃物を用いて、前記した内径
面と面取部を互いにラップしながら打抜いた場合には、
必ず互いに接して打抜く２度の打抜部がでてくる。従っ
て、プレス打抜型用刃物の形状を左右非対称として、前
記固定子鉄心板の内径部の打抜線上でラップして２度打
抜く打抜部をなくする構成とすることにより、バリの発
生を回避することが可能となる。これにより従来のよう
に固定子鉄心板のバリ取り作業がなくなり、固定子鉄心
の製作工数及び時間の低減が達成される。In the manufacture of the stator core plate in which the inner diameter surface and the slot portion of the electric steel sheet of the fan-shaped segment are sequentially punched with a single press punching die, a press having the same symmetrical shape on the left and right sides is used. Using a punching blade, when punching while lapping the inner diameter surface and the chamfered portion described above,
There will always be two punching parts that are in contact with each other. Therefore, by making the shape of the press punching die asymmetrical and wrapping on the punching line of the inner diameter portion of the stator core plate to eliminate the punching portion that is punched twice, the occurrence of burrs is prevented. It is possible to avoid it. As a result, the work of removing burrs from the stator core plate as in the prior art is eliminated, and the number of manufacturing steps and time of the stator core are reduced.
【００１１】[0011]
【実施例】以下この発明を実施例に基づいて説明する。
図１はこの発明の実施例になる回転機固定子鉄心板のプ
レス打抜型用刃物の断面図、図２は電気鋼板を図１のプ
レス打抜型用刃物で打抜き固定子鉄心板を作製する説明
図である。なお、図はそれぞれ従来の図４及び図５に対
応するものであり、従来と同じ部分には同一符号を用い
ることにより詳細な説明を省略する。図１のプレス打抜
型用刃物１において、図２のスロット部３の開口部４の
両側の面取部４１ｃ及び４１ｄを打抜き形成する面取打
抜部４ｃ及び４ｄの曲率半径は異なっており、左側の４
ｃ部が大きくなった左右非対称をしている。この面取打
抜部４ｃのスロット部開口部４側の端は、図２の固定子
鉄心板２の内径面２ａより下側に位置するようになって
いる。EXAMPLES The present invention will be described below based on examples.
FIG. 1 is a cross-sectional view of a punching die for a rotary machine stator core plate according to an embodiment of the present invention, and FIG. 2 is an explanation for producing a punching stator iron core plate from an electrical steel sheet by the press punching die tool of FIG. It is a figure. The drawings correspond to FIGS. 4 and 5 of the related art, respectively, and the same parts as those of the related art are denoted by the same reference numerals and detailed description thereof will be omitted. In the press punching die 1 of FIG. 1, chamfering punching portions 4c and 4d for punching and forming chamfered portions 41c and 41d on both sides of the opening 4 of the slot portion 3 of FIG. 2 have different radii of curvature, 4 on the left
The c section has a large left-right asymmetry. The end of the chamfering punching portion 4c on the slot opening 4 side is located below the inner diameter surface 2a of the stator core plate 2 of FIG.
【００１２】この発明のプレス打抜型用刃物により電気
鋼板を打抜いて固定子鉄心板２を作製する手順は、前記
した従来例により説明したとおりに行われる。即ち、図
２に示すように電気鋼板をプレスにより分割切断した扇
形のセグメントに、所定寸法の固定子鉄心板２の内径面
２ａに位置するようにプレス打抜型用刃物１の内径打抜
部８に位置合わせをし、プレスにて打抜く。次に、所定
の間隔幅を有する歯部５を設けて従来と同様に内径打抜
部８にて打抜かれた部分の図の右端部が、次の打抜かれ
るスロット部の幅の１／４までラップするように、電気
鋼板を矢印の方へ移動して打抜く。The procedure for punching an electric steel sheet with the press punching die of the present invention to produce the stator core plate 2 is performed as described in the above-mentioned conventional example. That is, as shown in FIG. 2, an electric steel plate is divided into pieces by a press to form a fan-shaped segment, and the inner diameter punched portion 8 of the punch 1 for press punching die is located on the inner diameter surface 2a of the stator core plate 2 having a predetermined size. Align with and punch with a press. Next, the right end in the figure of the portion punched by the inner diameter punching portion 8 by providing the tooth portion 5 having a predetermined interval width is ¼ of the width of the next punching slot portion as in the conventional case. Move the electrical steel sheet in the direction of the arrow and punch it so that it wraps up to.
【００１３】図２の打抜部の２重斜線の部分は図５と同
様に先のプレス打抜型用刃物１による打抜部とのラップ
部分である。しかしながら、この発明のプレス打抜形刃
物１は、前記したように面取打抜部４ｃの曲率半径が面
取打抜部４ｄより大きく、この面取打抜部４ｄの溝打抜
部３ａとは反対側のスロット部３の開口部４側に延びる
端が固定子鉄心板２の内径面２ｂより内側になるように
設けてあるので、固定子鉄心の内径面２ａの打抜き線上
と面取打抜部４ｃと接することがなく交差して打抜かれ
ているために、従来のように固定子鉄心板２の内径面２
ａの線上に接する個所がなく、バリの発生を防止するこ
とができる。The double-hatched portion of the punching portion in FIG. 2 is a lap portion with the punching portion by the above-described press-punching die tool 1, as in FIG. However, in the press-punched cutter 1 of the present invention, as described above, the radius of curvature of the chamfered punching portion 4c is larger than that of the chamfered punched portion 4d, and the chamfered punched portion 4d has a groove punched portion 3a. Is provided so that the end of the slot portion 3 on the opposite side, which extends toward the opening 4 side, is located inside the inner diameter surface 2b of the stator core plate 2, so that the inner diameter surface 2a of the stator core is chamfered and chamfered. Since the punching is performed by intersecting the punched portion 4c without making contact with the punched portion 4c, the inner diameter surface 2 of the stator core plate 2 is different from the conventional one.
Since there is no part in contact with the line a, it is possible to prevent the occurrence of burrs.
【００１４】また、前記のプレス打抜型用刃物１により
打抜き設けられた打抜部の交差部６の位置を、固定子鉄
心板２の面取部４１ｃ内に位置するように前記面取打抜
部４ｄの寸法を設定することにより、固定子鉄心板２を
積層して得られる固定子鉄心のスロット内への固定子絶
縁コイルの装着をするためのスロット開口部４の面取部
を確保することできる。Further, the chamfering punching is performed so that the position of the intersection 6 of the punching portions punched by the press punching tool 1 is located inside the chamfering portion 41c of the stator core plate 2. By setting the dimension of the portion 4d, a chamfered portion of the slot opening 4 for mounting the stator insulating coil in the slot of the stator core obtained by stacking the stator core plates 2 is secured. You can do it.
【００１５】[0015]
【発明の効果】以上のように、この発明においては、回
転機固定子鉄心板を電気鋼板を打抜いて作製するプレス
打抜型用刃物において、電気鋼板の内径面の打抜部とラ
ップするプレス打抜型刃物の内径打抜部の曲率半径を、
一方の内径打抜部より大きくし左右非対称として、前記
固定子鉄心板の内径面の打抜部と交差するように構成し
た。これによりプレス打抜型用刃物を順次ラップしなが
ら打抜き切断する場合において、プレス打抜型用刃物の
内径面に内径打抜部が接することがないので、バリの発
生を回避することが可能となる。従って、回転電機の固
定子鉄心の渦電流の増加による部分的な鉄心の過熱、及
び固定子絶縁コイルの機械的な損傷を回避するためのた
めの固定子鉄心板のバリ取り作業が不要となり、固定子
鉄心の製作工数と製作時間の低減が図れるとともに、回
転電機の信頼性及び品質の維持を確保することができ
る。As described above, according to the present invention, in a press punching die for punching a rotary machine stator core plate by punching an electrical steel sheet, a press for lapping the punching portion on the inner diameter surface of the electrical steel sheet. The radius of curvature of the punching part
One of the inner diameter punched portions is larger than the other inner diameter punched portion so as to be asymmetrical, and is configured to intersect with the punched portion of the inner diameter surface of the stator core plate. Thus, when punching and cutting the press punching die while sequentially wrapping it, since the inner diameter punching portion does not come into contact with the inner diameter surface of the press punching die, it is possible to avoid the occurrence of burrs. Therefore, partial overheating of the iron core due to an increase in the eddy current of the stator core of the rotating electric machine and deburring work of the stator core plate for avoiding mechanical damage to the stator insulating coil are unnecessary, The number of manufacturing steps and manufacturing time of the stator core can be reduced, and the reliability and quality of the rotating electric machine can be maintained.
【図１】この発明の実施例を示す回転機固定子鉄心板の
プレス打抜型用刃物の形状図である。FIG. 1 is a shape diagram of a press punching die for a rotor core plate of a rotating machine showing an embodiment of the present invention.
【図２】図１のプレス打抜型用刃物で打抜き固定子鉄心
板を作製する説明図である。FIG. 2 is an explanatory view of manufacturing a punching stator core plate with the press punching die tool of FIG.
【図３】セグメント状の固定子鉄心板の平面図である。FIG. 3 is a plan view of a segment-shaped stator core plate.
【図４】従来の回転機固定子鉄心板のプレス打抜型用刃
物の形状図である。FIG. 4 is a shape diagram of a conventional press punching die for a rotor core plate of a rotating machine.
【図５】図４のプレス打抜型用刃物をで打抜き固定子鉄
心板を作製する説明図である。5 is an explanatory diagram for producing a punching stator core plate by using the press punching die tool of FIG. 4. FIG.
１ プレス打抜型用刃物 ２ 固定子鉄心板 ３ スロット部 ３ａ 溝打抜部 ４ スロット開口部 ４ｃ 面取打抜部 ４ｄ 面取打抜部 ８ 内径打抜部 1 Press Punch Die 2 Stator Core Plate 3 Slot 3a Groove Punch 4 Slot Opening 4c Chamfer Punch 4d Chamfer Punch 8 Inner Diameter Punch
Claims (1)
抜くプレス打抜型に用いられ、前記固定子鉄心板の内径
側に開口する溝を打抜く溝打抜部と、前記溝の開口部両
側に円弧状の面取部を打抜く面取打抜部と、一方の側の
前記面取部に連続させて前記固定子鉄心板の内径面の一
部を打抜く内径打抜部とからなる刃部を備え、前記固定
子鉄心板を形成する電気鋼板の扇形のセグメントに前記
内径打抜部で打抜いた前記内径面に他方の側の前記面取
部をラップさせながら、前記スロット部を一つずつ打抜
く単一方式の刃物において、面取打抜部の刃部の形状を
左右非対称とし、固定子鉄心板の内径面にラップさせて
面取部を打抜く前記面取打抜部の刃部を、前記内径面と
交差させるようにしたことを特徴とする回転電機固定子
鉄心板のプレス打抜型用刃物。1. A groove punching part for punching a groove open to the inner diameter side of the stator core plate, which is used in a press punching die for punching a slot part in a stator core plate of a rotating electric machine, and an opening of the groove. A chamfering punching portion for punching an arcuate chamfering portion on both sides of the part, and an inner diameter punching portion for punching a part of the inner diameter surface of the stator core plate continuously with the chamfering portion on one side. While including the chamfered portion on the other side on the inner diameter surface punched by the inner diameter punched portion in the fan-shaped segment of the electric steel sheet forming the stator core plate, the slot In a single-type blade that punches each part one by one, the chamfering punching part has a shape that is left-right asymmetric, and the chamfering part is punched by wrapping the chamfered part with the inner diameter surface of the stator core plate. A punching portion of the rotary electric machine stator core plate is characterized in that the blade portion of the removed portion intersects with the inner diameter surface. Type cutting tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05662295A JP3312675B2 (en) | 1995-02-21 | 1995-02-21 | Knife for press punching die of rotating machine stator core plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05662295A JP3312675B2 (en) | 1995-02-21 | 1995-02-21 | Knife for press punching die of rotating machine stator core plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08228460A true JPH08228460A (en) | 1996-09-03 |
| JP3312675B2 JP3312675B2 (en) | 2002-08-12 |
Family
ID=13032395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05662295A Expired - Fee Related JP3312675B2 (en) | 1995-02-21 | 1995-02-21 | Knife for press punching die of rotating machine stator core plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3312675B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108405706A (en) * | 2017-10-26 | 2018-08-17 | 新乡市豫兴起重电机有限公司 | A kind of Cone-shaped electric machine rotor separation stator exempts from vehicle bits mold |
| CN108704979A (en) * | 2018-07-17 | 2018-10-26 | 常州机电职业技术学院 | Progressive die with novel rotary structure |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5438441B2 (en) * | 2009-09-09 | 2014-03-12 | 株式会社三井ハイテック | Manufacturing method of laminated iron core and laminated iron core produced using the same |
-
1995
- 1995-02-21 JP JP05662295A patent/JP3312675B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108405706A (en) * | 2017-10-26 | 2018-08-17 | 新乡市豫兴起重电机有限公司 | A kind of Cone-shaped electric machine rotor separation stator exempts from vehicle bits mold |
| CN108704979A (en) * | 2018-07-17 | 2018-10-26 | 常州机电职业技术学院 | Progressive die with novel rotary structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3312675B2 (en) | 2002-08-12 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |