DE878816C - Method for increasing the axial thrust in motors with a rotor designed as a thrust magnet - Google Patents
Method for increasing the axial thrust in motors with a rotor designed as a thrust magnetInfo
- Publication number
- DE878816C DE878816C DEH8959A DEH0008959A DE878816C DE 878816 C DE878816 C DE 878816C DE H8959 A DEH8959 A DE H8959A DE H0008959 A DEH0008959 A DE H0008959A DE 878816 C DE878816 C DE 878816C
- Authority
- DE
- Germany
- Prior art keywords
- diamagnetic
- rotor
- motors
- thrust
- increasing
- 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
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/12—Structural association with clutches, brakes, gears, pulleys or mechanical starters with auxiliary limited movement of stators, rotors or core parts, e.g. rotors axially movable for the purpose of clutching or braking
- H02K7/125—Structural association with clutches, brakes, gears, pulleys or mechanical starters with auxiliary limited movement of stators, rotors or core parts, e.g. rotors axially movable for the purpose of clutching or braking magnetically influenced
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
Description
Bekannt sind Verschiebeankermotoren mit zylindrischem Rotor, bei- denen die Axialkraft dadurch erzielt wird, daß in den den Luftspalt begrenzenden Mantelflächen von Stator und Rotor flache umlaufende Nuten derart über die Luftspaltlänge verteilt sind, daß das von der Motorwicklung erzeugte Feld gleichzeitig eine axiale Schubkraft auf den Rotor ausübt.Sliding armature motors with cylindrical rotors are known, both which the axial force is achieved in that in the delimiting the air gap The outer surfaces of the stator and rotor have flat circumferential grooves over the length of the air gap are distributed so that the field generated by the motor winding is also an axial field Exerts thrust on the rotor.
Wird diese Methode bei Verschiebeankermotoren mit konischem Rotor angewandt, so hat dieses eine Steigerung der ursprünglichen axialen Schubkraft zur Folge.This method is used for sliding armature motors with a conical rotor applied, this has an increase in the original axial thrust Episode.
Die durch diese Methoden erzielbaren maximalen axialen Schubkräfte reichen vielfach nicht aus, um insbesondere bei Bremsmotoren ein genügiendes Verhältnis Bremsmoment zu Nennmoment zu erzielen.The maximum axial thrust that can be achieved using these methods are often not enough to achieve a sufficient ratio, especially with brake motors To achieve braking torque to nominal torque.
Werden -aber die umlaufenden Nuten in den Mantelflächen der Bohrung des Statorpaketes und des Rotors erfindungsgemäß mit diamagnetischen Werkstoffen, z. B. diamagnetischen Eisen-Nickel-Kobalt-Legierungen, ausgefüllt, so wird bei Motoren mit als Schubmagnet ausgebildetem Rotor der Verlauf der Kraftlinien im Bereich des Luftspaltes vorzugsweise zwischen den diamagnetischen Zonen konzentriert. Das Aufbringen der diamagnetischen Füllung der Ausnehmungen kann beim Stator nach erf ' olgter Unterbringung der Wicklung im Metallspritzverfahren erfolgen. Dabei wird das Blechpaket vor dem Aufspritzen des diamagnetischen Werkstoffes durch Induktionsaufheizung vorgewärmt, beispielsweise durch Anschluß der Statorwicklung an Wechselstrom höherer Frequenz. Beim Rotor geschieht dieses durch Umgießen, vorzugsweise im Preßgußverfa!hren, in Verbindung mit der Herstellung der Rotorkurzschlußwicklung unter Verwendung geeigneter Legierungen, welche neben der für die Wicklung erforderlichen elektrischen Leitfähigkeit gleichzeitig diamagnetische Eigenschaften mit möglichst kleiner magnetischer Leitfähigkeit aufweisen. Bei Verwendung von Leichtmetallen oder deren Legierungen, gegebenenfalls unter Zusatz von Bestandteilen, die die diamagnetischen Eigenschaften des Leichtmetalls erhöhen, ergibt sich ein vereinfachtes Herstellungsverfahren in einem Arbeitsgang. Nach dem Ausspritzen der ringförmigen Nuten im Ständerpaket bzw. Fertigstellung der Kurzschlußwicklung und Ausfüllung der Ringnuten im Rotor werden beide Teile in der bekannten Form durch Schleifen oder Drehen auf Luftspaltmaß bearbeitet, so daß sie wie normale Motoren glatte Mantelflächen aufweisen.Will -aber the circumferential grooves in the outer surfaces of the bore of the stator and the rotor according to the invention with diamagnetic materials, such. B. diamagnetic iron-nickel-cobalt alloys, so in motors with a rotor designed as a thrust magnet, the course of the lines of force in the area of the air gap is preferably concentrated between the diamagnetic zones. The application of the diamagnetic filling of the recesses can be made in the stator according to erf 'olgter accommodating the winding in the metal spraying process. The laminated core is preheated by induction heating before the diamagnetic material is sprayed on, for example by connecting the stator winding to an alternating current of higher frequency. In the rotor, this is done by casting, preferably by die casting, in conjunction with the manufacture of the rotor short-circuit winding using suitable alloys which, in addition to the electrical conductivity required for the winding, also have diamagnetic properties with the lowest possible magnetic conductivity. When using light metals or their alloys, optionally with the addition of constituents that increase the diamagnetic properties of the light metal, a simplified production process results in one operation. After the annular grooves in the stator package have been injected or the short-circuit winding has been completed and the annular grooves in the rotor have been filled, both parts are machined in the known form by grinding or turning to an air gap, so that they have smooth outer surfaces like normal motors.
Die obere Schnitthälfte der Prinzipskizze zeigt einen Verschiebeankermotor mit zylindrischein Rotor i, während die untere einen solchen mit konischem Rotor :2 zeigt. Das Statorpaket 3 trägt in üblicher Weise die Wicklung 4. Die in den Mantelflächen von Stator und Rotor eingebrachten Nuten werden mit diamagnetischen Werkstoffen 5 ausgefüllt.The upper half of the sectional diagram shows a sliding armature motor with a cylindrical rotor i, while the lower half shows one with a conical rotor: FIG. The stator package 3 carries the winding 4 in the usual way. The grooves made in the outer surfaces of the stator and rotor are filled with diamagnetic materials 5.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH8959A DE878816C (en) | 1951-07-01 | 1951-07-01 | Method for increasing the axial thrust in motors with a rotor designed as a thrust magnet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH8959A DE878816C (en) | 1951-07-01 | 1951-07-01 | Method for increasing the axial thrust in motors with a rotor designed as a thrust magnet |
Publications (1)
Publication Number | Publication Date |
---|---|
DE878816C true DE878816C (en) | 1954-10-18 |
Family
ID=7145743
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEH8959A Expired DE878816C (en) | 1951-07-01 | 1951-07-01 | Method for increasing the axial thrust in motors with a rotor designed as a thrust magnet |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE878816C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1290244B (en) * | 1964-05-22 | 1969-03-06 | Moulinex Sa | Electromagnetic brake for electric motors |
FR2217849A1 (en) * | 1972-09-25 | 1974-09-06 | Siemens Ag |
-
1951
- 1951-07-01 DE DEH8959A patent/DE878816C/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1290244B (en) * | 1964-05-22 | 1969-03-06 | Moulinex Sa | Electromagnetic brake for electric motors |
FR2217849A1 (en) * | 1972-09-25 | 1974-09-06 | Siemens Ag |
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