DE973099C - Permanent magnet and process for its manufacture - Google Patents
Permanent magnet and process for its manufactureInfo
- Publication number
- DE973099C DE973099C DEA14358A DEA0014358A DE973099C DE 973099 C DE973099 C DE 973099C DE A14358 A DEA14358 A DE A14358A DE A0014358 A DEA0014358 A DE A0014358A DE 973099 C DE973099 C DE 973099C
- Authority
- DE
- Germany
- Prior art keywords
- permanent magnet
- magnetic body
- cobalt
- vanadium
- iron
- 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
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/2726—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of a single magnet or two or more axially juxtaposed single magnets
- H02K1/2733—Annular magnets
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C15/00—Clocks driven by synchronous motors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Description
Dauermagnet und Verfahren zu seiner Herstellung Es sind Dauermagnete bekannt, deren Magnetkörper die Form eines Zylinders oder Ringes hat und die so magnetisiert sind, daß die Pole auf der Mantelfläche des zylinder- oder ringförmigen Magnetkörpers liegen. Derartige Magnete werden beispielsweise für elektrische Nebenuhren verwendet, bei denen in gewissen Zeitabständen von der Hauptuhr ein Stromstoß in wechselnder Richtung auf einen Elektromagnet gegeben wird, der eine Drehbewegung eines Dauermagnets bewirkt. Ein anderes Anwendungsgebiet solcher Dauermagnete sind Rotoren für Kleinstromerzeuger, bei denen jeweils der Rotor in einem aus magnetisch weichem Werkstoff bestehenden Stator läuft und die in diesem induzierte Spannung zur Stromerzeugung ausgenutzt wird. Diese bekannten Dauermagnete werden in der Regel aus Eisen-Nickel-Aluminium-Legierungen oder Eisen-Nickel-Aluminium-Kobalt-Legierungen hergestellt, die nicht spanlos verformbar sind und nur durch Schleifen auf ein genaues Maß gebracht werden können. Ein weiterer Nachteil dieser bekannten Dauermagnete besteht darin, daß der wertvolle magnetische Werkstoff im Inneren des Dauermagnetkörpers nur sehr unvollständig ausgenutzt wird, da die Kraftlinien hauptsächlich in dem äußeren, an der Mantelfläche gelegenen Teil des Magnetkörpers fließen.Permanent magnet and process for its manufacture They are permanent magnets known whose magnetic body has the shape of a cylinder or ring and the so are magnetized that the poles on the outer surface of the cylindrical or ring-shaped Magnet body lie. Such magnets are used, for example, for electrical slave clocks used, in which at certain time intervals from the master clock a current surge in alternating direction is given to an electromagnet that rotates a permanent magnet causes. Another area of application of such permanent magnets is Rotors for small power generators, each of which has the rotor in one made of magnetic soft material existing stator runs and the voltage induced in this is used to generate electricity. These known permanent magnets are usually made of iron-nickel-aluminum alloys or iron-nickel-aluminum-cobalt alloys manufactured, which cannot be deformed without cutting and only by grinding to a precise level Measure can be brought. Another disadvantage of these known permanent magnets is that the valuable magnetic material inside the permanent magnet body is only used very incompletely, since the lines of force are mainly in the outer part of the magnet body located on the lateral surface.
Es sind auch Dauermagnetlegierungen bekannt, die 30 bis 52'9/o Eisen, 36 bis 62'9/o Kobalt und 6 bis I6% Vanadium enthalten und die spanlos verformt werden können. Die Anwendung dieser Legierungen ist jedoch beschränkt wegen der hohen Kosten, die ihre Herstellung erfordert.Permanent magnet alloys are also known which contain 30 to 52.9% iron, 36 to 62.9% cobalt and 6 to 16% vanadium and which can be deformed without cutting. However, the application of these alloys is limited because of the high cost involved in their manufacture.
Der Gegenstand der Erfindung bildet ein Dauermagnet aus an sich bekannten Eisen-Kobalt-Vanadium-Dauermagnetlegierungen, insbesondere für elektrische Nebenuhren, Kleinstromerzeuger und Kleinmotoren, der so ausgebildet und magnetisiert ist, daß seine Pole auf einer Zylindermantelfläche liegen, und welcher dadurch gekennzeichnet ist, daß er aus einem oder mehreren um einen unmagnetischen Körper herumgelegten, ringförmig gebogenen Draht- oder Bandstücken besteht, die durch ihre Federkraft auf dem unmagnetischen Körper gehalten werden.The object of the invention forms a permanent magnet from known per se Iron-cobalt-vanadium permanent magnet alloys, especially for electrical slave clocks, Small electricity generator and small motor, which is designed and magnetized so that its poles lie on a cylindrical surface, and which is characterized by this is that it consists of one or more wrapped around a non-magnetic body, Annularly bent pieces of wire or tape are made by their spring force be held on the non-magnetic body.
Zur Herstellung dieser Dauermagnete kann eine der erwähnten Eisen-Kobalt-Vanadium-Legierungen, z. B. eine solche mit etwa 5o% Kobalt und I3% Vanadium, verwendet werden, weil verhältnismäßig wenig Dauermagnetwerkstoff erforderlich ist und dieser vollständig ausgenutzt wird.One of the mentioned iron-cobalt-vanadium alloys, z. B. one with about 50% cobalt and 13% vanadium can be used because relatively little permanent magnet material is required and this is fully utilized.
In der Zeichnung ist ein Ausführungsbeispiel des Erfindungsgegenstandes dargestellt.The drawing shows an embodiment of the subject matter of the invention shown.
Der in Abb. I im Schnitt und in Abb. 2 in Draufsicht dargestellte Dauermagnet nach der Erfindung besteht aus einem zylindrischen Körper I aus unmagnetischem Werkstoff, z. B. Messing. Die Ringe 2 und 3 aus verformtem Dauermagnetwerkstoff sind in Nuten des Körpers I eingelegt. Mit dem unmagnetischen Körper I ist die zentrisch angeordnete Welle 4 fest verbunden.The one shown in Fig. I in section and in Fig. 2 in plan view Permanent magnet according to the invention consists of a cylindrical body I made of non-magnetic Material, e.g. B. Brass. Rings 2 and 3 made of deformed permanent magnet material are inserted in grooves of the body I. With the non-magnetic body I it is centric arranged shaft 4 firmly connected.
Die Herstellung des dargestellten Dauermagnets kann so erfolgen, daß der zu Draht verformte Dauermagnetwerkstoff, z. B. eine Eisen-Kobalt-Vanadium-Legierung mit etwa 5o% Kobalt und I3% Vanadium, Rest im wesentlichen Eisen, schraubenförmig gewickelt und dann gehärtet wird. Von dem gehärteten Draht werden dann ringförmige Stücke abgetrennt und in die auf dem Umfang des unmagnetischen Körpers I angebrachten Nuten eingelegt. Infolge der Federkraft des gehärteten Drahtes können die Drahtringe zum Einlegen aufgebogen werden; sie pressen sich nach dem Einlegen federnd an den unmagnetischen Körper und bedürfen daher keiner weiteren Befestigung. An Stelle von Draht kann selbstverständlich auch Band aus Dauermagnetwerkstoff verwendet werden.The permanent magnet shown can be manufactured in such a way that the permanent magnet material deformed into wire, e.g. B. an iron-cobalt-vanadium alloy with about 50% cobalt and 13% vanadium, the remainder essentially iron, helical is wrapped and then hardened. The hardened wire then becomes ring-shaped Pieces separated and attached to the circumference of the non-magnetic body I. Grooves inserted. As a result of the spring force of the hardened wire, the wire rings be bent open for insertion; after inserting, they press against the non-magnetic bodies and therefore do not require any further fastening. Instead of of wire, of course, tape made of permanent magnet material can also be used.
Die Dauermagnete nach der Erfindung können insbesondere für elektrische Nebenuhren, Kleinstromerzeuger und Kleinmotoren verwendet werden.The permanent magnets according to the invention can in particular for electrical Slave clocks, small power generators and small motors are used.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA14358A DE973099C (en) | 1951-11-08 | 1951-11-08 | Permanent magnet and process for its manufacture |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA14358A DE973099C (en) | 1951-11-08 | 1951-11-08 | Permanent magnet and process for its manufacture |
Publications (1)
Publication Number | Publication Date |
---|---|
DE973099C true DE973099C (en) | 1959-12-03 |
Family
ID=6923163
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEA14358A Expired DE973099C (en) | 1951-11-08 | 1951-11-08 | Permanent magnet and process for its manufacture |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE973099C (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE540229C (en) * | 1927-02-04 | 1931-12-10 | Praez S Werkstaetten Seeger & | Pin lock, especially for piston pins |
DE662511C (en) * | 1938-07-14 | Aeg | Runner for synchronous small motors with armature made of thin-walled hardened steel | |
US2298225A (en) * | 1939-12-30 | 1942-10-06 | Bell Telephone Labor Inc | Permanent magnet material and production thereof |
-
1951
- 1951-11-08 DE DEA14358A patent/DE973099C/en not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE662511C (en) * | 1938-07-14 | Aeg | Runner for synchronous small motors with armature made of thin-walled hardened steel | |
DE540229C (en) * | 1927-02-04 | 1931-12-10 | Praez S Werkstaetten Seeger & | Pin lock, especially for piston pins |
US2298225A (en) * | 1939-12-30 | 1942-10-06 | Bell Telephone Labor Inc | Permanent magnet material and production thereof |
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