EP2206206B1 - Procédé de fabrication d'une baque de commutateur pour le commutateur rotatif d'une machine électrique ainsi qu'une machine électrique - Google Patents

Procédé de fabrication d'une baque de commutateur pour le commutateur rotatif d'une machine électrique ainsi qu'une machine électrique Download PDF

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Publication number
EP2206206B1
EP2206206B1 EP08845722A EP08845722A EP2206206B1 EP 2206206 B1 EP2206206 B1 EP 2206206B1 EP 08845722 A EP08845722 A EP 08845722A EP 08845722 A EP08845722 A EP 08845722A EP 2206206 B1 EP2206206 B1 EP 2206206B1
Authority
EP
European Patent Office
Prior art keywords
commutator
ring
recess
laminations
commutator ring
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.)
Active
Application number
EP08845722A
Other languages
German (de)
English (en)
Other versions
EP2206206A1 (fr
Inventor
Olaf Pflugmacher
Christian Anders
Wolfgang Hecht
Normen Sach
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
Priority to PL08845722T priority Critical patent/PL2206206T3/pl
Publication of EP2206206A1 publication Critical patent/EP2206206A1/fr
Application granted granted Critical
Publication of EP2206206B1 publication Critical patent/EP2206206B1/fr
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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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/02—Details for dynamo electric machines
    • H01R39/04—Commutators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49009—Dynamoelectric machine
    • Y10T29/49011—Commutator or slip ring assembly

Definitions

  • a hollow cylindrical carrier is then inserted into the closed commutator ring coaxially with the commutator ring, and then the gap between the inner circumference of the commutator ring and the outer periphery of the carrier is potted with a flowable insulating compound surrounding the inner circumference of the commutator ring circumferential dovetailed recesses and the axial notches between the fins fills and hardens after casting to a secure positive connection between the carrier and the
  • the commutator Since the equipped with the commutator electric machine can rotate in operation at speeds of up to 30 000 revolutions per minute, the commutator is subject to strong centrifugal forces, which without suitable countermeasures to an undesirable deformation of the metallic Kommutatorrings and thus possibly to increased sparking between the Carbon brushes and the commutator can lead. To counteract this, it is from the DE 103 19 460 A1 among other things, already known to provide the ends of the slats with groove-like recesses, which are penetrated by a prestressable ring anchor, which holds each slat biased radially inwardly on the carrier of the commutator ring.
  • a commutator for electric machines and a method for its manufacture is provided.
  • To attach a reinforcing ring in a circumferential groove of the commutator is provided to brace the armature of the commutator segments (lamellae) by caulking a notched groove on the front side or by bending the armature of the lamellae a reinforcing ring in the outward direction.
  • the invention has the object to improve a method of the type mentioned in that arming of the commutator ring is facilitated by Rollkommutatoren and to provide an electric machine of the type mentioned with a simple to manufacture and to be mounted armored Kommutatorring.
  • a cylindrical mandrel having an outer diameter corresponding to the inner diameter of an inner circumferential surface of the commutator ring and having a tapered front end end is urged from a shorter end of the commutator ring into a cavity enclosed by the commutator ring to a previously towards the end face diverging inner boundary of the groove in the region of the fins to press outward against an inner peripheral surface of the reinforcing ring.
  • the reinforcing ring can be made of any suitable material and with any suitable shape.
  • the reinforcing ring is secured by the deformation of the commutator in the recess so that it is protected against accidental loss in further processing operations.
  • the temperature and centrifugal strength of the finished commutator can be improved in this way and can be dispensed with a complex biasing of the reinforcing ring by the deformation of the commutator ring.
  • the recess in the slats is preferably open in the axial direction of the closed Kommutatorrings, so that the reinforcing ring can be inserted in this direction in the recess.
  • the recess may remain open in the axial direction, but it can also be closed by the cured potting or insulating compound, which connects the commutator ring in the finished commutator with its carrier.
  • the potting or insulating penetrates not only in the spaces between the slats but also in the recess, whereby the reinforcing ring is additionally secured in the recess.
  • the fins of the commutator have a single recess for a reinforcing ring
  • this recess is expediently arranged in the region of an armature bearing of the electric machine.
  • the lamellae may also have two recesses which are arranged at the opposite ends of the commutator ring, that in each recess a reinforcing ring can be fixed.
  • the fixation of the reinforcing ring in the recess under plastic deformation of the fins of the commutator preferably takes place by
  • the reinforcing ring can also be fixed in the recess, that a boundary thereof is bent inward in the direction of the axis of rotation of the commutator in the closed Kommutatorring and by passing a mandrel through the opening enclosed by the commutator from the inside is pressed against an opposite inner peripheral surface of the reinforcing ring.
  • the reinforcing ring is preferably made of a fiber reinforced resin or plastic material so that it can be easily and inexpensively manufactured.
  • the in the Figures 1 and 2 illustrated hollow commutator 2 of an electrical machine is intended for mounting on a rotor shaft of a rotor of the electric machine.
  • the commutator 2 consists essentially of a spirally wound tubular support 4 arranged on its inner circumference, a metallic commutator ring 6 arranged on the outer circumference of the commutator 2 and comprising a plurality of axial lamellae 8, and one made of a resin or plastic material hardened insulating or potting compound 10 which connects the commutator ring 6 positively to the carrier 4 and fills the gaps 12 between each adjacent lamellae 8 of the commutator 6.
  • the commutator 2 further comprises a reinforcing ring 14 (FIG. Fig. 1 .
  • reinforcing rings 14, 15, 16 prevent the commutator ring 6 from becoming deformed or becoming detached from the carrier 4 as a result of the centrifugal forces occurring during operation at high rotational speeds.
  • the fins 8 of the commutator ring 6 have an L-shaped profile, as best in Fig. 2 and 7 to 12 shown.
  • a longer, parallel to the axis of rotation 24 of the commutator 2 leg 26 forms with its outer side 27, the mating contact for the sliding on the circumference of the commutator 2 carbon brushes, while serving at a front end of the longer leg 26 shorter leg 28 serves as a winding connection, according to the assembly of the commutator 2 on the rotor shaft is connected to the rotor windings.
  • the commutator 6 has three recessed about dovetail-shaped fastening grooves 30 which fill as well as the gaps 12 between the fins 8 during assembly of the commutator 6 on the support 4 with the flowable insulating or potting compound 10.
  • the insulating or potting compound 10 forms a collar 32 and 34, which overlaps a portion of the adjacent end faces of the lamellae 8 of the commutator 6 and the receiving groove 18 and the receiving grooves 20 and 22 closes.
  • the reinforcing ring 14 or the two reinforcing rings 15 and 16 consist of a reinforced with glass fibers, carbon fibers or aramid fibers plastic or resin material and each have a rectangular cross-section.
  • a profiled strip material 34 made of copper or another deformable electrically conductive metal is used, from the in Fig. 3 a section is shown.
  • the cross-section of the profiled strip material 34 essentially corresponds to the cross-section of the lamellae 8, but with the difference that the receiving groove 18 serving to receive the reinforcing ring 14 or the receiving grooves 20, 22 serving to receive the reinforcing rings 15, 16 move in the direction of the adjacent one Expand face of the fins 8 and compared to the cross section of the associated Arm michsrings 14, 15, 16 have a slightly larger groove cross-section. Specifically, at least one of the two opposing boundaries of the receiving groove 18 or 20 and 22 diverges in the direction of the adjacent end face.
  • a multiplicity of parallel notches 38, 40 (FIG. 2) extending transversely to the longitudinal direction of the strip material 34 are produced.
  • Fig. 4 formed in the opposite sides of the strip material 34, whereby when looking at the receiving groove 18 provided with the end face of the strip material 34 in Fig. 3 the in Fig. 4 shown cross section with a plurality of parallel slats 8, which is separated from the two adjacent lamellae 8 respectively by an upper and a lower notch 38 and 40 and connected to these lamellae 8 each by a thin web 42.
  • a predetermined number of lamellae 8 are separated from the strip material 34, which is notched transversely to the longitudinal direction, by cutting the strip material 34 along one of the webs 42.
  • the separated lamellae 8 are then formed in a further process step by means of a rolling tool to the closed commutator ring 6, as in Fig. 5 shown as a section, wherein the lower notches 40 close between the longer legs 26 to narrow gaps, while the upper notches 38 between the shorter legs 28 on.
  • the reinforcing ring 14 or 15, 16 is fixed under plastic deformation of the commutator ring in the associated receiving groove 18 or 20, 22.
  • the respective adjacent front end of the commutator 6 is compressed by a radially inwardly from the inside and from the outside to the inner and outer circumference of the fins 8 applied compressive force F under plastic deformation, as in Fig. 9 or 12, to clamp the reinforcing ring 14 or 15, 16 in the associated receiving groove 18 or 20, 22, so that the opposite inner and outer boundaries of the groove 18, 20, 22 in the region of the lamellae 8 against the inner or outer circumferential surface of the reinforcing ring 14; 15, 16 are pressed.
  • FIGS. 1 to 9 This can be done, for example, by a cylindrical mandrel having an outer diameter corresponding to the inner diameter of the inner circumferential surface 50 of the commutator ring 6 and having a tapered front end end of the front end of the commutator ring 6 provided with the shorter legs 28 or winding connections in the direction of the arrow A in Fig. 9 is pressed by the cavity 52 enclosed by the commutator ring 6, in order to press outwardly against the inner circumferential surface of the reinforcing ring 14 an inner boundary 56 of the groove 18 in the region of the lamellae 8 that diverges toward the end face 54.

Landscapes

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

Claims (10)

  1. Procédé de fabrication d'une bague pour un commutateur d'une machine électrique, dans lequel des lamelles de la bague de commutateur sont façonnées à partir d'un matériau en feuillard, déformable et électriquement conducteur,
    les lamelles présentant au moins une découpe qui s'étend dans le sens de la longueur du matériau en feuillard,
    le nombre souhaité de lamelles ainsi façonnées étant ensuite refermé pour former la bague de commutateur,
    caractérisé en ce que
    après la fermeture des lamelles (8) en vue de former la bague de commutateur (6), une bague d'armature (14) en un matériau électriquement non conducteur et non déformable est insérée dans la découpe (18) et est immobilisée dans la découpe (18; 18, 20) par déformation plastique des lamelles (8) de la bague de commutateur (6),
    en ce qu'un mandrin cylindrique dont le diamètre extérieur correspond au diamètre intérieur d'une surface périphérique intérieure (50) de la bague de commutateur (6) et dont une extrémité frontale avant rétrécie est repoussé par une extrémité frontale de la bague de commutateur (6) dotée de courtes ailes (28) dans une cavité (52) entourée par la bague de commutateur (6), pour repousser une frontière intérieure (56), qui diverge préalablement en direction de la surface frontale (54), de la rainure (18) au niveau des lamelles (8) vers l'extérieur contre une surface périphérique intérieure de la bague d'armature (14).
  2. Procédé selon la revendication 1, caractérisé en ce que la découpe (18) ménagée dans les lamelles (8) est ouverte dans la direction axiale de la bague de commutateur (6).
  3. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'au moins une découpe (18; 18, 20) pour une bague d'armature (14; 15, 16) est disposée sur chacune des extrémités frontales opposées de la bague de commutateur (6).
  4. Procédé selon l'une des revendications précédentes, caractérisé en ce que la bague d'armature (14; 15, 16) est fixée par serrage d'au moins une bordure de la découpe (18; 18, 20).
  5. Procédé selon l'une des revendications précédentes, caractérisé en ce que la bague d'armature (14; 15, 16) est immobilisée dans la découpe (18; 18, 20) par évasement d'une ouverture (52) qui entoure la bague de commutateur (6).
  6. Procédé selon l'une des revendications précédentes, caractérisé en ce que la bague d'armature (14; 15, 16) est constituée d'un matériau de résine ou de matière synthétique renforcée de fibres.
  7. Procédé selon l'une des revendications précédentes, caractérisé en ce que la bague d'armature (14; 15, 16) possède une section transversale rectangulaire ou carrée.
  8. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'un contre-palier cylindrique creux qui entoure une périphérie de la bague de commutateur (6) empêche un évasement excessif des extrémités frontales des lamelles (8).
  9. Commutateur fabriqué selon l'une des revendications précédentes.
  10. Machine électrique présentant un commutateur selon la revendication 9.
EP08845722A 2007-10-29 2008-10-28 Procédé de fabrication d'une baque de commutateur pour le commutateur rotatif d'une machine électrique ainsi qu'une machine électrique Active EP2206206B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08845722T PL2206206T3 (pl) 2007-10-29 2008-10-28 Sposób wytwarzania pierścienia komutatora dla zwijanego komutatora maszyny elektrycznej oraz maszyna elektryczna

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007051583A DE102007051583A1 (de) 2007-10-29 2007-10-29 Verfahren zum Herstellen eines Kommutatorrings für einen Rollkommutator einer Elektromaschine, sowie Elektromaschine
PCT/EP2008/064592 WO2009056537A1 (fr) 2007-10-29 2008-10-28 Procédé de fabrication d'une bague de collecteur pour bloc rotatif de moteur électrique et moteur électrique

Publications (2)

Publication Number Publication Date
EP2206206A1 EP2206206A1 (fr) 2010-07-14
EP2206206B1 true EP2206206B1 (fr) 2011-10-26

Family

ID=40342121

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08845722A Active EP2206206B1 (fr) 2007-10-29 2008-10-28 Procédé de fabrication d'une baque de commutateur pour le commutateur rotatif d'une machine électrique ainsi qu'une machine électrique

Country Status (8)

Country Link
US (1) US8635760B2 (fr)
EP (1) EP2206206B1 (fr)
JP (1) JP5517943B2 (fr)
CN (1) CN101842944B (fr)
AT (1) ATE531104T1 (fr)
DE (1) DE102007051583A1 (fr)
PL (1) PL2206206T3 (fr)
WO (1) WO2009056537A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2967844B1 (fr) * 2010-11-18 2012-11-30 Valeo Equip Electr Moteur Procede d'assemblage d'un collecteur sur l'arbre d'un rotor, et collecteur, arbre, rotor et machine electrique tournante pour la mise en oeuvre de celui-ci
DE102018218322A1 (de) * 2018-10-26 2020-04-30 Volkswagen Aktiengesellschaft Verfahren und Werkzeug zur Herstellung eines Rotors für eine elektrische Maschine

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3492519A (en) * 1967-09-11 1970-01-27 Kirkwood Commutator Corp Commutator and commutator blank for dynamoelectric machines and method of making same
YU39889B (en) * 1981-09-29 1985-04-30 Kolektor Semi-manufactured commutator for commutaors
JPS63209449A (ja) * 1987-02-25 1988-08-31 Hitachi Ltd スタ−タ用コンミの固定装置
DE3714098A1 (de) * 1987-04-28 1988-11-10 Kautt & Bux Kg Kommutator fuer maschinen kleiner bis mittlerer groesse und verfahren zu seiner herstellung
DE3823845A1 (de) * 1988-07-14 1990-01-18 Kautt & Bux Kg Kommutator und verfahren zu seiner herstellung
JPH02101947A (ja) * 1988-10-07 1990-04-13 Asmo Co Ltd 整流子及びその製造方法
JPH0771387B2 (ja) * 1990-05-31 1995-07-31 株式会社マキタ 整流子
JP2904623B2 (ja) * 1990-11-30 1999-06-14 アスモ株式会社 小型電動機用整流子及びその製造方法
WO1995022184A1 (fr) 1994-02-10 1995-08-17 Comtrade Handelsgesellschaft Mbh Bague d'armature pour corps de rotation et son procede de fabrication
JP3313508B2 (ja) * 1994-04-25 2002-08-12 株式会社ミツバ コミテータ
US5491373A (en) * 1994-09-07 1996-02-13 The Morgan Crucible Company Plc Commutators
DE19543998B4 (de) 1995-11-25 2007-07-05 Robert Bosch Gmbh Verfahren zum Herstellen eines Kommutatorringes für einen Kommutator
DK0944938T3 (da) * 1996-12-12 2002-07-01 Comtrade Handelsgmbh Kommutator med armeringsring
DE19743086A1 (de) * 1997-09-30 1999-04-01 Bosch Gmbh Robert Verfahren zum Herstellen eines Kommutatorringes für einen Kommutator sowie danach hergestellter Kommutator
US6161275A (en) * 1998-07-08 2000-12-19 Siemens Canada Limited Method of manufacturing commutators for electric motors
JP3813857B2 (ja) * 2001-03-13 2006-08-23 株式会社杉山製作所 円筒形整流子及びその製造方法
US6958563B2 (en) * 2003-01-16 2005-10-25 Energy Conversion Systems Holdings, Llc Riser commutators
DE10319460A1 (de) 2003-04-29 2004-11-18 Robert Bosch Gmbh Elektrohandwerkzeugmaschine mit elektromotorischem Antrieb
JP2007089347A (ja) * 2005-09-26 2007-04-05 Denso Corp 回転電機の整流子

Also Published As

Publication number Publication date
CN101842944B (zh) 2013-03-27
ATE531104T1 (de) 2011-11-15
EP2206206A1 (fr) 2010-07-14
PL2206206T3 (pl) 2012-03-30
US8635760B2 (en) 2014-01-28
JP5517943B2 (ja) 2014-06-11
US20110043072A1 (en) 2011-02-24
JP2011502460A (ja) 2011-01-20
WO2009056537A1 (fr) 2009-05-07
DE102007051583A1 (de) 2009-04-30
CN101842944A (zh) 2010-09-22

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