DE521804C - Process for grinding off rotating contacts or commutators of electrical machines - Google Patents

Process for grinding off rotating contacts or commutators of electrical machines

Info

Publication number
DE521804C
DE521804C DEA59093D DEA0059093D DE521804C DE 521804 C DE521804 C DE 521804C DE A59093 D DEA59093 D DE A59093D DE A0059093 D DEA0059093 D DE A0059093D DE 521804 C DE521804 C DE 521804C
Authority
DE
Germany
Prior art keywords
commutator
grinding
grindstone
commutators
machine
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
Application number
DEA59093D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AEG AG
Original Assignee
AEG AG
Publication date
Priority to DEA59093D priority Critical patent/DE521804C/en
Application granted granted Critical
Publication of DE521804C publication Critical patent/DE521804C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/14Maintenance of current collectors, e.g. reshaping of brushes, cleaning of commutators

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Motor Or Generator Current Collectors (AREA)

Description

*) Von dem Patenisucher ist als der Erfinder angegeben worden:*) The sponsor seeker stated as the inventor:

Ernst Stoffregen in Berlin-Pankow.Ernst Stoffregen in Berlin-Pankow.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims (1)

An den blanken Oberflächen der umlaufenden Kontakte elektrischer Maschinen bilden sich im Laufe der Zeit Oxydschichten, die für den Strom einen Übergangswiderstand darstellen und das Kontaktmaterial beschädigen. Außerdem beobachtet man nach längerem Gebrauch, vorwiegend bei Maschinen mit Stromwendern, 'ein Schlagen der Stromwender, so daß die Bürsten an den Stellen, anForm on the bare surfaces of the rotating contacts of electrical machines In the course of time there are layers of oxide that create a contact resistance for the current and damage the contact material. In addition, one observes after a long time Use, mainly on machines with commutators, 'a striking of the commutators, so that the brushes on the spots ίο denen die Kollektoren Unrundungen aufweisen, eine hüpfende bzw. vibrierende Bewegung ausführen. Zur Beseitigung der Unrundungen hat man bisher besondere Abschleifvorrichtungen verwendet, die sowohl von Hand als auch mit Hilfe von Maschinen betätigt werden. Beide Arten, dieser Einrichtungen werden am Gehäuse oder Lagerschild der Maschine befestigt. Da aber die Anschaffungslcosten solcher Apparate immerhin noch reich-ίο which the collectors are not rounded, perform a hopping or vibrating movement. So far, special grinding devices have been used to eliminate the out-of-rounding used, which is operated both by hand and with the help of machines will. Both types of these devices are attached to the machine's housing or end shield attached. But since the acquisition costs of such devices are still high ao lieh hoch sind, zieht man es im allgemeinen vor, besonders bei kleinen Maschinentypen, den Läufer auszubauen und dann abzudrehen.ao borrowed are high, one prefers it in general before, especially with small machine types, to remove the rotor and then to turn it off. Es ist nun zwar weiterhin auch bereits einIt is now still a Verfahren zum Abschleifen von Stromwendern bekannt geworden, bei dem ein Schleifstein in einen Bürstenhalter eingesetzt und durch ein mechanisches Mittel, beispielsweise mit einer Bürstendruckfeder, auf die Kommutatoroberfläche angepreßt wird. Ein derartiges Verfahren hat aber verschiedene Nachteile. Mit Hilfe eines einfachen mechanischen Mittels ist es nicht ohne weiteres möglich, den Schleifstein so fest auf die StromwenderoberfJäche anzudrücken bzw. derart festzuhalten, daß der Kollektor ordnungsgemäß abgeschliffen wird. Der Schleifstein gerät nämlich infolge des Schiagens des Kollektors in Schwingungen, so daß die Unrundungen von dem Stromwender beim Abschleifen nicht beseitigt werden. Wollte man diese Nachteile des erwähnten bekannten Verfahrens beseitigen, so müßte man eine sehr umständliche und daher teure mechanische Einspannvorrichtung verwenden. .Method for grinding commutators has become known in which a grindstone inserted into a brush holder and by mechanical means, for example with a brush compression spring, is pressed against the commutator surface. Such a thing However, the method has various disadvantages. With the help of a simple mechanical means it is not easily possible to place the grindstone so firmly on the commutator surface to press or hold in such a way that the collector is properly sanded off will. The grindstone starts to vibrate as a result of the collector hitting, so that the out-of-rounding is not removed by the commutator when grinding will. If one wanted to eliminate these disadvantages of the known method mentioned, so one would have to use a very cumbersome and therefore expensive mechanical clamping device. . Die Erfindung vermeidet die Übelstände +5 sämtlicher bekannten Anordnungen und Verfahren, dadurch, daß der Schleifstein, dessen Querschnitt kleiner als der des Bürstenkastens sein muß, in den Bürstenhalter eingesetzt, während des Abschleifvorganges von Hand gegen den Stromwender gedrückt und dabei in der Laufrichtung gekantet wird. Die Innenwand der Tasche bildet dann ein festes Widerlager, so daß der Schleifstein den Schlagen des Kommutators nicht Folge leisten kann.The invention avoids the inconveniences +5 of all known arrangements and methods, in that the grindstone, whose cross-section is smaller than that of the brush box must be inserted into the brush holder by hand during the grinding process is pressed against the commutator and folded in the direction of travel. The inner wall the pocket then forms a solid abutment so that the grindstone can hit the ground of the commutator cannot obey. Das Verfahren gemäß der Erfindung gestattet, kleine Unrundungen auf dem Stromwender schnell zu beseitigen. Es ist ferner nicht kostspielig und kann bequem ausgeführt werden.The method according to the invention allows small out-of-rounds on the commutator to eliminate quickly. It is also inexpensive and convenient to perform will. In der Abbildung ist ein Ausführungsbeispiel, der Erfindung veranschaulicht. In einen Kohlenhalter a, aus dem die Bürsten entfernt sind, ist zwecks Bearbeitung der umlaufenden Kontakte (Stromwender b) einer elektrischen Maschine ein Schleifstein c eingesteckt. Der Schleifstein wird während der Drehung der von einer anderen Maschine angetriebenen Maschine von Hand auf den Stromwender angedrückt und gleichzeitig an die Rückenwand d der den Stein aufnehmenden Tasche e angelegt, wodurch er unter dem Einfluß der Kollektorunebenheiten nicht vibrieren kann, sondern festgehalten wird.In the figure, an embodiment of the invention is illustrated. A grindstone c is inserted into a carbon holder a, from which the brushes have been removed, for the purpose of processing the rotating contacts (commutator b) of an electrical machine. The grindstone is pressed against the commutator by hand while the machine is being driven by another machine and at the same time it is placed against the back wall d of the pocket e that holds the stone, so that it cannot vibrate under the influence of the unevenness of the collector but is held in place. Ρλτεντλ NSi'UUCiJ :Ρλτεντλ NSi'UUCiJ: Verfahren zum Abschleifen von sich drehenden Kontakten bzw. Stromwendern elektrischer Maschinen mittels eines in einen Bürstenhalter der Maschine eingesetzten Schleifsteines, dadurch gekennzeichnet, daß der Stein, dessen Querschnitt kleiner als der des Bürstenkastens sein muß, während des Abschleifvorganges von Hand gegen den Stromwender gedrückt und dabei in der Laufrichtung gekantet wird. ·Process for grinding off rotating contacts or commutators electrical machines by means of an inserted into a brush holder of the machine Grinding stone, characterized in that the stone, its cross-section must be smaller than that of the brush box during the grinding process of Hand pressed against the commutator and folded in the direction of travel will. ·
DEA59093D Process for grinding off rotating contacts or commutators of electrical machines Expired DE521804C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA59093D DE521804C (en) Process for grinding off rotating contacts or commutators of electrical machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA59093D DE521804C (en) Process for grinding off rotating contacts or commutators of electrical machines

Publications (1)

Publication Number Publication Date
DE521804C true DE521804C (en) 1931-03-26

Family

ID=6941837

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA59093D Expired DE521804C (en) Process for grinding off rotating contacts or commutators of electrical machines

Country Status (1)

Country Link
DE (1) DE521804C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10215214A1 (en) * 2002-04-06 2003-10-16 Thomas Lasmann Device for cleaning collectors for electric motor operated with carbon brushes, has cleaning module on stator with movable cleaning brush pressed onto collector by spring and retracted by electromagnet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10215214A1 (en) * 2002-04-06 2003-10-16 Thomas Lasmann Device for cleaning collectors for electric motor operated with carbon brushes, has cleaning module on stator with movable cleaning brush pressed onto collector by spring and retracted by electromagnet

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