DE671707C - Process for the production and solidification of the stator core assemblies of electrical machines - Google Patents
Process for the production and solidification of the stator core assemblies of electrical machinesInfo
- Publication number
- DE671707C DE671707C DE1930671707D DE671707DD DE671707C DE 671707 C DE671707 C DE 671707C DE 1930671707 D DE1930671707 D DE 1930671707D DE 671707D D DE671707D D DE 671707DD DE 671707 C DE671707 C DE 671707C
- Authority
- DE
- Germany
- Prior art keywords
- pressing
- solidification
- production
- stator core
- electrical machines
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/024—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies with slots
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
Description
Es war bisher nicht möglich, das sog. Folgeschnittverfahren bei der Herstellung der genuteten Läufer- und Ständerblechpakete elektrischer Maschinen praktisch zu verwerten. Trotz der Vorteile, die dieses Verfahren gegenüber den bisher üblichen Methoden (Komplettschnitt) bietet, scheitert seine Anwendung daran, daß infolge der verschiedenartigen Streckung des gleichzeitig durch mehrere Werkzeuge beanspruchten Blechstreifens die Blechringe ungleichartig werden. Bei der Prüfung der Blechringe stellt sich heraus, daß der Innen- und Außenkreis Exzentrizitäten je nach Größe des Durchmessers bis zu mehreren Zehnteln Millimeter aufweisen. Wenn solche Bleche in ein fertig ausgedrehtes Gehäuse eingesetzt werden, dann kommen diese Exzentrizitäten in der Bohrung des Blechpaketes zur Auswirkung, so daß die NutenIt was previously not possible to use the so-called follow-up cutting process during production to use the grooved rotor and stator laminations of electrical machines in practice. Despite the advantages that this method offers compared to the methods commonly used up to now (complete cut), its application fails because of the different stretching of the simultaneously by several Tools stressed sheet metal strips, the sheet metal rings are dissimilar. In the Examination of the sheet metal rings shows that the inner and outer circles have eccentricities depending on the size of the diameter up to several tenths of a millimeter. if Such sheets are used in a finished turned housing, then these come Eccentricities in the hole of the laminated core to the effect, so that the grooves
so stark ausgefeilt und die Bohrung nachgedreht werden muß. Abgesehen von den hieraus entstehenden Mehrkosten ergeben sich auch in elektrischer Hinsicht so große Nachteile, daß man das Folgeschnittverfahren bisher nicht anwenden konnte.Filed so heavily and reworked the hole must become. Apart from the resulting additional costs, there are also in from electrical point of view so great disadvantages that the sequential cutting process has not yet been used could apply.
Erfindungsgemäß werden die sich bei An-. wendung des Folgeschnittverfahrens für das Ausstanzen · der Ständerbleche elektrischer Maschinen ergebenden Ungleichmäßigkeiten vorsätzlich zur Erhöhung der Stabilität von Ständern benutzt, deren Blechpaket durch Umspritzen mit Preß- und Halteteilen zu einem festen Ganzen vereinigt wird. Um die gewünschten Unebenheiten am Rücken des Ständerblechpaketes zu erhalten, werden die einzelnen Bleche, bei welchen nacheinander z. B. .der Innendurchmesser, der Außendurchmesser und die Wicklungsnuten gestanzt worden sind, in an sich bekannter Weise auf einem Dorn zentriert und mit ihm als geschichtetes Paket in die Spritzgußform eingesetzt. Die mit großer Geschwindigkeit in die Form eintretende Schmelze dringt mit Sicherheit auch in die sich durch die Unebenheiten am Rücken des Ständerblechpaketes ergebenden Vertiefungen ein und bewirkt eine gute Halterung der einzelnen Bleche. Die Verwendung von Schmelzmaterial mit verhältnismäßig tiefliegendem Schmelzpunkt gibt Gewähr dafür, daß ein Abbrennen der die Unebenheiten bildenden Vorspränge am Rücken des Blechpaketes während des Spritzgießens nicht eintritt. Es wird dadurch möglich, auch bei verhältnismäßig geringem Querschnitt der Preß- und Halteteile einen absolut stabilen Ständerkörper zu erhalten, dessen Bohrung nicht nachgearbeitet zu werden braucht.According to the invention, the at An. application of the subsequent cutting process for the Punching out · the stator sheets of electrical machines resulting in irregularities intentionally used to increase the stability of uprights, their laminated core by Overmoulding with pressing and holding parts is combined into a solid whole. To the to get the desired bumps on the back of the stator core, the individual sheets, in which one after the other z. B. the inside diameter, the outside diameter and the winding grooves have been punched, centered in a manner known per se on a mandrel and with it as a layered one Package inserted into the injection mold. The melt entering the mold at great speed is sure to penetrate also in those resulting from the unevenness on the back of the stator core Indentations and ensures that the individual sheets are held securely. The usage of melting material with a relatively low melting point ensures that the bumps will burn off forming projections on the back of the laminated core during injection molding does not occur. This makes it possible, even with a relatively small cross-section Pressing and holding parts to obtain an absolutely stable stator body, its bore does not need to be reworked.
Claims (1)
trierdorn aufgereiht sind und von ä'iesetjl während-des Vorpressens des Pakets" tißdare set and held together by the laminated core back under pressure cast pressing and holding parts f da-- by in that the lamellar Blechr iji with its bore on Einei
trierdorn are lined up and from ä'iesetjl during-the pre-pressing of the package "tißd
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE671707T | 1930-01-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE671707C true DE671707C (en) | 1939-02-13 |
Family
ID=6590595
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1930671707D Expired DE671707C (en) | 1930-01-12 | 1930-01-12 | Process for the production and solidification of the stator core assemblies of electrical machines |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE671707C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2248897A1 (en) * | 1972-10-05 | 1974-04-11 | Gen Electric | METHOD OF MANUFACTURING A LAMINATED UNIT |
-
1930
- 1930-01-12 DE DE1930671707D patent/DE671707C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2248897A1 (en) * | 1972-10-05 | 1974-04-11 | Gen Electric | METHOD OF MANUFACTURING A LAMINATED UNIT |
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