EP0573439B1 - Collecteur a lames pour machines electriques et procede pour sa fabrication - Google Patents

Collecteur a lames pour machines electriques et procede pour sa fabrication Download PDF

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Publication number
EP0573439B1
EP0573439B1 EP92903633A EP92903633A EP0573439B1 EP 0573439 B1 EP0573439 B1 EP 0573439B1 EP 92903633 A EP92903633 A EP 92903633A EP 92903633 A EP92903633 A EP 92903633A EP 0573439 B1 EP0573439 B1 EP 0573439B1
Authority
EP
European Patent Office
Prior art keywords
metal profile
laminates
projections
commutator
roll
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 - Lifetime
Application number
EP92903633A
Other languages
German (de)
English (en)
Other versions
EP0573439A1 (fr
Inventor
Ludwig Reisnecker
Martin Schwerdtle
Winfried Brettmann
Friedrich Behrens
Hans Deierling
Peter Franz
Siegfried Hauptmann
Claus Pollack
Stefan Ossenkopp
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0573439A1 publication Critical patent/EP0573439A1/fr
Application granted granted Critical
Publication of EP0573439B1 publication Critical patent/EP0573439B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01R43/08—Manufacture of commutators in which segments are not separated until after assembly

Definitions

  • the invention relates to a roller commutator for electrical machines according to the preamble of the main claim, and a method for its production according to claim 5.
  • the lamellae are produced from a metal profile by embossing grooves transversely to the longitudinal direction of the profile.
  • anchoring claws are worked out from them by means of a peeling process, which arise on the surface of the metal profile which later forms the inside of the commutator.
  • a separate manufacturing process is required to work the anchoring claws out of the metal profile.
  • roller commutator according to the invention with the features mentioned in claim 1 has the advantage that it is easier and therefore cheaper to manufacture. There are no bending or peeling processes for working out the claws and thus processing steps in the manufacture of the roller commutator. In addition, a tool group that requires additional maintenance work can be omitted in the manufacture of the commutator.
  • An embodiment of the roller commutator in which the metal profile has an essentially L-shaped base body is particularly preferred.
  • the longer arm of this base body has projections on its inner surface in the finished state of the commutator, which preferably have a V-shaped root region. The ends of these projections are directed outward in the opposite direction substantially parallel to the longer arm of the base body.
  • the metal profile thus has a simple cross-section, which allows the metal profile to be produced inexpensively using the extrusion process.
  • the L-shaped metal profile for the roller commutator according to claim 1 also enables a very simple and reliable manufacturing method with the features of claim 5.
  • the metal profile 1 has an essentially L-shaped base body 3, the shorter arm 5 of which is directed downwards according to FIG. 1, while the longer arm 7 extends essentially horizontally. From the top of the longer arm, two wing-like projections 9 and 11 emerge from which the anchoring claws 13 and 15 are made. To In a first processing step, which is referred to here as the first stage, segments 19 are cut out of the projection 11 with the aid of a first cutting tool 17 as waste, which create the sufficient distance between the adjacent anchoring claws 15 for further processing.
  • the direction of movement of the metal profile 1 through a processing station for producing individual strand sections which are each formed into a roller commutator is indicated by an arrow.
  • a third cutting tool 25 which runs parallel to the longer arm 7 in the direction of the arrow, cuts out notches between the remaining anchoring claws 13 and 15, segments 27 occurring as waste.
  • the fourth stage In the next processing step, referred to as the fourth stage, are counter-embossing suitable embossing tools 29a and 29b, which are only shown here in outline and whose direction of movement is indicated by arrows, which lie between the anchoring claws 13 and 15 Areas of the base body 3 are compressed, so that the anchoring claws 13 and 15 are associated with lamellae 31, which are connected to one another by narrow webs 33.
  • the webs run directly on the underside of the base body 3, which, as explained below, forms the outside of the later roller commutator.
  • a fourth cutting tool 35 is introduced approximately in the direction of the longitudinal extension of the shorter arms 5 or the arrow shown in the space between two lamellae 31, so that the webs 33 are cut out in the region of the shorter arms 5 and segments 37 occur as waste.
  • the individual strand sections 38 are bent into a circular ring after the 5th stage, so that the plan view of the end face of a lamellar ring 38a of a roller commutator 39, which is strongly sketched in FIG.
  • the individual strand sections indicated in FIG. 1 38 of the metal profile 1 are bent so that the anchoring claws 13 and 15 come to lie on the inside of the circular cylindrical roller commutator and the underside of the slats 31 shown in FIG. 1 forms the outside thereof.
  • reinforcement rings 45 and 47 can then be inserted at the end, the diameter of which is selected so that they come to lie between the anchoring claws 13 and 15 and the base body 3 of the metal profile 1.
  • a bushing 49 which serves as the seat of the finished rolling commutator 39 on the shaft of an electrical machine, can be inserted into the interior of the rolling commutator at an insulating distance.
  • the parts mentioned, the roller commutator 39, the reinforcement rings 45 and 47 and the bushing 49 are pressed together with plastic 51 in a next processing step.
  • the bushing 49 In order to give the bushing 49 a better hold, it can be provided on the outside with projections and depressions.
  • the roller commutator is turned or ground on its outside, the connecting webs 33 being removed between the individual lamellae 31.
  • the individual slats 31 are then held together only by the reinforcement rings 45 and 47 and by the plastic compound 51. It should be noted that the anchoring claws 13 and 15 give the slats in the plastic 51 a secure hold. Slats 31 and socket 49 are also insulated from one another by the plastic 51.
  • FIG. 4 The enlarged sectional view shown in FIG. 4 through a lamella 31 along its central plane shows the base body 3 with the longer arm 7 and with the shorter arm 5 running at approximately 90 ° to this.
  • the anchoring claws 15 and 13 arise on the side of the longer arm 7 opposite the shorter arm 5, the anchoring claws 15 and 13 arise. It can be seen that they each have a practically V-shaped root region 53 and 55 in the form of projections in their original region near the base body 3 the ends 57 and 59 of the anchoring claws, which run in the opposite direction outward and parallel to the longer arm 7, join.
  • the length of the ends 57 and 59 is selected so that they span practically the entire remaining length of the longer arm 7, as seen from the root region 53 and 55, respectively.
  • an intermediate space 61 or 63 is created between the base body 3 or its longer arm 7 and the ends 57 and 59 of the anchoring claws 13 and 15, which can each serve to accommodate a reinforcement ring (see reference numbers 45 and 47 in FIG. 3).
  • plastic compound which is then held securely by the ends 57 and 59 of the anchoring claws 13 and 15, gets into this intermediate space 61 or 63 when the rolling commutator 39 is pressed, which is also clear from the partial sectional view according to FIG. 3.
  • the ends 57 and 59 are thinner than their associated root regions 53 and 55 or the base body 3. This makes the rolling commutator relatively light, while at the same time secure anchoring of the slats in the associated plastic mass 51 is ensured.
  • the anchoring claws 13 and 15 can also be arranged in opposite directions, the root regions 53 and 57 not diverging from the inside to the outside but being directed towards one another. In addition, the ends of the anchoring claws are then directed towards one another. With such an arrangement of the anchoring claws, the possibility of introducing reinforcing rings is eliminated, but this is not a disadvantage in lighter embodiments. In such a configuration of the anchoring claws, the projections 9 and 11 of the metal profile 1 are designed accordingly.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Motor Or Generator Current Collectors (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

Il est proposé un collecteur à lames pour machines électriques, ainsi qu'un procédé pour sa fabrication. Ledit collecteur présente un certain nombre de lames disposées les unes à côtés des autres et fabriquées en un profilé métallique continu. Le collecteur à lames (39) est caractérisé en ce que le profilé métallique (1) présente déjà avant la fabrication des lames (31) sur l'une de ses faces des saillies (9 et 11), lesquelles servent, après le déroulement des tronçons fabriqués dans le profilé métallique (1), de griffes d'ancrage (13, 15). Grâce au fait que lors de la fabrication du collecteur à lames un usinage des griffes n'est plus nécessaire, des outils et des phases d'usinage supplémentaires ne sont plus utiles.

Claims (5)

  1. Collecteur à lames pour machines électriques comportant un certain nombre de lames réalisées à partir d'un profilé métallique continu et qui sont juxtaposées suivant une forme annulaire, caractérisé en ce que le profilé métallique (1) comporte sur l'une de ses faces, les saillies (9, 11) déjà avant la fabrication des lames (31), saillies qui après enroulement du profilé métallique usiné, servent de griffes d'accrochage (13, 15).
  2. Collecteur à lames selon la revendication 1, caractérisé en ce que le profil métallique (1) possède un corps de base (3) essentiellement en forme de L et les saillies (9, 11) ont une embase (53, 55), de préférence en forme de V et en ce que les extrémités (57, 59) s'étendent essentiellement parallèlement au grand bras (7) du corps de base (3).
  3. Collecteur à lames selon la revendication 1 ou 2, caractérisé en ce que les extrémités (57, 59) sont dirigées vers l'extérieur, dans des directions opposées.
  4. Collecteur à lames selon l'une des revendications 1 à 3, caractérisé en ce que les prolongements (57, 59) sont plus minces que l'embase (53, 55) des griffes (13, 15) et/ou des autres parties du corps de base (3).
  5. Procédé de fabrication d'un collecteur à lames selon la revendication 1, caractérisé en ce que :
    a) on estampe tout d'abord les griffes d'accrochage (13, 15) dans les saillies (11, 12) en les dégageant par découpe de segments (19, 23),
    b) puis on préforme les lames (31) en découpant d'autres segments (27) dans la direction longitudinale entre les lames (31), dans le grand bras (7) du profilé métallique (1),
    c) puis on sépare les lames (31) avec des outils d'estampage (29a, 29b) à mouvement opposé, la séparation se faisant jusqu'au niveau d'une aile (33), étroite, située du côté extérieur des lames,
    d) puis on enlève les ailes (33) au niveau des bras courts (5) du profilé métallique (1) à l'aide d'un outil de coupe (35), et
    e) enfin, on roule les lames (31) en formant un anneau de lames avec le segment (38) séparé du profilé métallique (1), on y presse de la matière plastique pour les accrocher et on les isole les unes des autres par enlèvement des ailes (33).
EP92903633A 1991-02-28 1992-01-31 Collecteur a lames pour machines electriques et procede pour sa fabrication Expired - Lifetime EP0573439B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4106307A DE4106307A1 (de) 1991-02-28 1991-02-28 Rollkommutator fuer elektrische maschinen und verfahren zu seiner herstellung
DE4106307 1991-02-28
PCT/DE1992/000058 WO1992016035A1 (fr) 1991-02-28 1992-01-31 Collecteur a lames pour machines electriques et procede pour sa fabrication

Publications (2)

Publication Number Publication Date
EP0573439A1 EP0573439A1 (fr) 1993-12-15
EP0573439B1 true EP0573439B1 (fr) 1995-04-19

Family

ID=6426092

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92903633A Expired - Lifetime EP0573439B1 (fr) 1991-02-28 1992-01-31 Collecteur a lames pour machines electriques et procede pour sa fabrication

Country Status (4)

Country Link
EP (1) EP0573439B1 (fr)
JP (1) JPH06505117A (fr)
DE (2) DE4106307A1 (fr)
WO (1) WO1992016035A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4201593C2 (de) * 1992-01-22 1999-06-10 Bosch Gmbh Robert Kommutator für elektrische Maschinen und Verfahren zu seiner Herstellung

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1292736B (de) * 1965-09-23 1969-04-17 Bosch Gmbh Robert Verfahren zur Herstellung der Anschlussfahnen eines Rollkommutators fuer elektrischeMaschinen und Rollkommutator mit nach dem Verfahren hergestellten Anschlussfahnen

Also Published As

Publication number Publication date
EP0573439A1 (fr) 1993-12-15
DE59201981D1 (de) 1995-05-24
WO1992016035A1 (fr) 1992-09-17
JPH06505117A (ja) 1994-06-09
DE4106307A1 (de) 1992-09-03

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