DE914872C - Method for manufacturing commutators - Google Patents
Method for manufacturing commutatorsInfo
- Publication number
- DE914872C DE914872C DEB13408A DEB0013408A DE914872C DE 914872 C DE914872 C DE 914872C DE B13408 A DEB13408 A DE B13408A DE B0013408 A DEB0013408 A DE B0013408A DE 914872 C DE914872 C DE 914872C
- Authority
- DE
- Germany
- Prior art keywords
- insulating
- metal surfaces
- commutators
- layer
- varnish
- 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
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/06—Manufacture of commutators
Description
(WiGBL S. 175)(WiGBL p. 175)
AUSGEGEBEN AM 12. JULI 1954ISSUED JULY 12, 1954
B 13408 VIIId/21 B 13408 VIIId / 21 d*d *
Die Erfindung bezieht sich auf ein Verfahren zum Herstellen von Stromwendern, deren Stege in eine Form eingesetzt und mit einem unter Druck aushärtenden isolierenden Preßstoff zu einem Formkörper vereinigt werden. Bei Anwendung hoher Preßdrücke können zwar sehr widerstandsfähige Preßstofformkörper erzeugt werden, jedoch besaßen die in dieser Weise hergestellten Stromwender nicht immer die gewünschte Schleuderfestigkeit. Die Erfindung beruht auf der Erkenntnis, daß gerade die wegen ihrer großen Festigkeit für den angegebenen Zweck besonders geeigneten Preßstoffe, die als Pulver oder in Gestalt von Tabletten in die Preßform eingebracht werden und unter Anwendung von Hitze und Druck zum Fließen kommen, die Metalloberflächen nicht genügend benetzen, um mit ihnen beim Aushärten eine feste Verbindung einzugehen.The invention relates to a method for producing power converters, the webs of which in a mold used and with an insulating molding compound that cures under pressure to form a molded body be united. When using high compression pressures can be very resistant Moldings are produced, but did not have the commutators produced in this way always the desired spin resistance. The invention is based on the knowledge that just the Because of their great strength for the specified purpose particularly suitable molding materials, which as Powder or in the form of tablets are introduced into the compression mold and used heat and pressure to flow, the metal surfaces do not wet enough to to form a firm bond with them as they harden.
Eine überraschend große Steigerung der Schleuderfestigkeit kann jedoch, wie Versuche bestätigt haben, dadurch erzielt werden, daß erfindungsgemäß auf die mit dem Isolierpreßstoff in Berührung kommende Metalloberfläche vor dem Einbringen des Isolierpreßstoffes eine aushärtefähige Lackschicht aufgetragen wird. Das in derartigen Lacken enthaltene Lösungsmittel bewirkt, daß die Metalloberflächen vollständig von dem Lack benetzt werden, der nach dem Trockenvorgang an diesen Flächen außerordentlich fest haftet. Mit dieser Lackschicht vereinigt sich nun'aber, wie Versuche gezeigt haben, auch der Isolierpreßstoff so fest, daß eine bis zur Grenze der Bruchfestigkeit dieses Stoffes untrennbare Verbindun&enisteht.A surprisingly large increase in the centrifugal resistance can, however, as confirmed by experiments have, be achieved by the fact that according to the invention on the coming into contact with the insulating molded material Metal surface a hardenable layer of varnish before the insulating material is introduced is applied. The solvent contained in such paints causes the metal surfaces are completely wetted by the paint on these surfaces after the drying process extremely firmly adheres. With this layer of lacquer, however, as tests have shown, Also the insulating material is so strong that it is inseparable up to the limit of the breaking strength of this material Connection is established.
Bei Anwendung des Verfahrens gemäß der Erfindung können die zur formschlüssigen Verankerung der Stege bisher benötigten Mittel erspart oderWhen using the method according to the invention, the form-fitting anchoring the webs saves funds previously required or
durch wesentlich leichter herzustellende und werkstoffsparende Verankerungsglieder ersetzt werden, die beispielsweise als einfache aus der Stegoberfläche abgebogene Verankerungshaken· ausgebildet werden können. Ferner können nunmehr zur Herstellung des Stromwenders sogar auch solche Preßstoffe herangezogen werden, deren Bindefähigkeit durch einen zur Erhöhung der Festigkeit und/oder zur Steigerung des Wärmeleitvermögens beitragendendue to the much easier to manufacture and material-saving ones Anchoring links are replaced, for example as a simple one from the web surface bent anchoring hooks · can be formed. Furthermore, you can now use it to manufacture of the commutator, even those molded materials are used whose binding properties are determined by one that contributes to increasing the strength and / or increasing the thermal conductivity
ίο Zuschlagstoff beeinträchtigt ist.ίο aggregate is impaired.
Zunächst erscheint es vorteilhaft, die Lackschicht lediglich zu trocknen und dann zusammen mit dem nachträglich unter Druck zugeführten Preßstoff aushärten zu lassen. Es hat sich jedoch gezeigt, daßFirst of all, it seems advantageous to just dry the paint layer and then dry it together with the to cure subsequently injected molding material under pressure. However, it has been shown that
is der nach dem Trocknen des Lösungsmittels zunächst noch verhältnismäßig weiche Schichtwerkstoff beim Preßvorgang von den Metalloberflächen abgedrängt werden kann. Dieser Nachteil läßt sich dadurch vermeiden, daß die Lackschicht bereits vor demis the first after the solvent has dried relatively soft layer material pushed away from the metal surfaces during the pressing process can be. This disadvantage can be avoided by the fact that the lacquer layer before
so Einbringen des Preßstoffes vollkommen ausgehärtet wird. Überraschenderweise wird durch diesen Vorgang die Festigkeit der Verbindung zwischen dem Schicht- und dem Preßstoff durchaus nicht beeinträchtigt. Die erfindungsgemäß aufzubringende Zwischenschicht besteht vorzugsweise aus einem Kresolharzkleblack.so the introduction of the molding material is completely cured will. Surprisingly, the strength of the connection between the laminate and the pressed material are not affected at all. The one to be applied according to the invention The intermediate layer preferably consists of a cresol resin adhesive varnish.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEB13408A DE914872C (en) | 1951-01-20 | 1951-01-21 | Method for manufacturing commutators |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE297565X | 1951-01-20 | ||
| DEB13408A DE914872C (en) | 1951-01-20 | 1951-01-21 | Method for manufacturing commutators |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE914872C true DE914872C (en) | 1954-07-12 |
Family
ID=6090721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEB13408A Expired DE914872C (en) | 1951-01-20 | 1951-01-21 | Method for manufacturing commutators |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS303710B1 (en) |
| CH (1) | CH297565A (en) |
| DE (1) | DE914872C (en) |
| GB (1) | GB692974A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1181316B (en) * | 1961-05-20 | 1964-11-12 | Inst Elmasch | Method and device for the automatic manufacture of commutators |
| DE1538941A1 (en) * | 1965-07-12 | 1970-03-12 | Mavilor | Process for the production of flat collectors for electric motors and electrical machines and collectors produced using this process |
-
1951
- 1951-01-21 DE DEB13408A patent/DE914872C/en not_active Expired
- 1951-12-22 CH CH297565D patent/CH297565A/en unknown
-
1952
- 1952-01-16 GB GB1246/52A patent/GB692974A/en not_active Expired
-
1954
- 1954-07-28 JP JP1585654A patent/JPS303710B1/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1181316B (en) * | 1961-05-20 | 1964-11-12 | Inst Elmasch | Method and device for the automatic manufacture of commutators |
| DE1538941A1 (en) * | 1965-07-12 | 1970-03-12 | Mavilor | Process for the production of flat collectors for electric motors and electrical machines and collectors produced using this process |
Also Published As
| Publication number | Publication date |
|---|---|
| GB692974A (en) | 1953-06-17 |
| CH297565A (en) | 1954-03-31 |
| JPS303710B1 (en) | 1955-05-31 |
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