EP0036444B1 - Verfahren zur Herstellung von Formpresskommutatoren - Google Patents

Verfahren zur Herstellung von Formpresskommutatoren Download PDF

Info

Publication number
EP0036444B1
EP0036444B1 EP80107080A EP80107080A EP0036444B1 EP 0036444 B1 EP0036444 B1 EP 0036444B1 EP 80107080 A EP80107080 A EP 80107080A EP 80107080 A EP80107080 A EP 80107080A EP 0036444 B1 EP0036444 B1 EP 0036444B1
Authority
EP
European Patent Office
Prior art keywords
grooves
longitudinal
groove
longitudinal grooves
worked
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
EP80107080A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0036444A2 (de
EP0036444A3 (en
Inventor
Joze Potocnik
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.)
KOLEKTOR PO
Original Assignee
KOLEKTOR PO
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 KOLEKTOR PO filed Critical KOLEKTOR PO
Priority to AT80107080T priority Critical patent/ATE10315T1/de
Publication of EP0036444A2 publication Critical patent/EP0036444A2/de
Publication of EP0036444A3 publication Critical patent/EP0036444A3/de
Application granted granted Critical
Publication of EP0036444B1 publication Critical patent/EP0036444B1/de
Expired legal-status Critical Current

Links

Images

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
    • 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
    • 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
    • Y10T29/49799—Providing transitory integral holding or handling portion

Definitions

  • the invention relates to a method for producing compression-molded commutators, in which longitudinal grooves are worked into the inner lateral surface of a hollow cylindrical copper body in an arrangement corresponding to the lamella division, the width of which is measured in the circumferential direction being reduced by a subsequent radial compression of the copper body.
  • Methods of this type are known (cf. DE-C-961 910). They are mainly used in the production of compression molding commutators with a large copper usable height and solid solder ring, such as are required for automotive starter motors, for example.
  • the invention is therefore based on the object of providing a method for producing compression molded commutators which is also suitable for blanks with a solder ring and which allows close tolerances with respect to the division of the commutator and the insulation width between the lamellae to be observed without difficulty, even if the commutator has one has a large usable copper height.
  • this object is achieved according to the invention in that, prior to being pressed together, a longitudinal groove is machined into the outer lateral surface of each future lamella, which is separated from one another by the internal longitudinal grooves, with a depth that is at least approximately the same radial distance from its groove base from the longitudinal axis of the copper body results from the groove base of the internal longitudinal grooves from this longitudinal axis, and a circumferential offset in relation to the adjacent internal longitudinal groove, which results in a ridge breaking between these two longitudinal grooves during the subsequent compression, and a width that is the same is the reduction in the width of each internal longitudinal groove to be brought about in the subsequent compression.
  • the webs formed with the aid of the outer longitudinal grooves break between each inner longitudinal groove and the adjacent outer longitudinal groove assigned to them during the pressing together, these webs do not hinder a uniform pressing of the copper body. Therefore, the pitch is not changed by the pressing process. Furthermore, the extent of the reduction in the width of the inner longitudinal grooves can be determined by the groove width of the outer longitudinal grooves with narrow tolerances, thereby also avoiding division errors and also the final width of the inner longitudinal grooves, which corresponds to the width of the insulation of the finished commutator, can be maintained with tight tolerances.
  • the blank produced by the method according to the invention can be further processed in a known manner.
  • holding members can be split on the inside of the lamellae and, after pressing out with the insulating molding compound, the lamellae can be separated from one another by turning off the commutator according to the depth of the original outer longitudinal grooves.
  • the copper body can also be produced in a known manner.
  • rings which have been formed by rolling a strip can also be used.
  • the internal longitudinal grooves are preferably arranged in such a way that the joint lies radially outside of one of these longitudinal grooves.
  • longitudinal grooves 3 are worked into the inner surface by means of a star-shaped stamp in the extrusion process, all of which are parallel to and parallel to one another Longitudinal axis of the copper body 1 lie and are arranged according to the desired division of the commutator to be manufactured.
  • the depth of the longitudinal grooves 3 is chosen so that the distance of its groove base 3 'from the outer surface of the copper body 1 is equal to the thickness of the layer to be twisted off after pressing with an insulating molding compound.
  • the groove depth thus corresponds to the radial height of the lamellae 4 formed by the longitudinal grooves 3 in the finished commutator.
  • the width of the longitudinal grooves 3 measured in the circumferential direction is greater than the width of the insulation of the finished commutator, that is to say greater than the distance, measured in the circumferential direction, of two adjacent lamellae of the finished commutator.
  • Radial grooves 5 are also worked into the end face of the flange 2 facing away from the cylindrical part of the copper body 1, namely in an extension of the longitudinal grooves 3. The arrangement of the radial grooves 5 therefore corresponds to the division of the commutator. As shown in FIG. 1, the depth of the radial grooves 5 is also selected so that the distance of their groove base from the other end face of the flange 2 is equal to the thickness of the layer to be turned later.
  • Longitudinal grooves 6 are machined into the outer lateral surface of the copper body 1 by means of extrusion, namely in the same number as the inner longitudinal grooves 3.
  • the depth of the outer longitudinal grooves 6 is equal to the thickness of the layer to be turned later. Therefore, the groove base of the outer grooves 6 lies in the cylindrical surface defined by the groove base 3 'of the inner longitudinal grooves 3.
  • the width of the longitudinal grooves 6 measured in the circumferential direction is equal to the amount by which the width of the inner longitudinal grooves 3 has to be reduced by a later shrinking of the copper body 1.
  • the difference between the width of a longitudinal groove 3 and a longitudinal groove 6 is therefore equal to the width of the insulation of the finished commutator. As shown in FIG.
  • the outer longitudinal grooves 6 are offset in relation to the inner longitudinal grooves 3 in the circumferential direction, all in the same sense and with the same extent.
  • a web 7 the width of which is measured in the circumferential direction is selected such that when the copper body 1 is later pressed together, it is roughly the same as that defined by the groove base 3' Cylinder surface breaks.
  • the width of the webs 7 is somewhat less than the width of the grooves 6 lying on the outside.
  • radial grooves 8 are also worked into the end face of the flange facing the cylindrical part of the copper body 1 by extrusion molding. As can be seen in FIG. 1, the depth of these radial grooves 8 is equal to the thickness of the layer to be turned later. Due to this groove depth and the offset of the radial grooves 8 with respect to the radial grooves 5, there is also a thin web 9 on the flange 2 of each radial groove 5 and the associated radial groove 8, which breaks when the copper body 1 is later pressed together.
  • the copper body 1 is inserted into a pressing tool which, as shown in FIGS. 3a, 3b and 4a, 4b, has a support star 11 which is guided in a sleeve 10 so as to be longitudinally displaceable.
  • the support star 11 has a number of strips 12 corresponding to the number of longitudinal grooves 3 and aligned with this in its end section which can be inserted into the copper body 1.
  • the strips 12 are, as shown in FIGS. 3a, 3b, profiled in such a way that they can engage a little in the longitudinal grooves 3 and thereby rest on their flanks when the copper body 1 has been pressed together to the correct dimension.
  • the pressing tool Concentrically around the support star 11, the pressing tool has pressure pieces 13 arranged radially displaceably in a number corresponding to the number of strips 12. These pressure pieces, which, as shown in Fig. 4a, 4b, are profiled so that they can be applied simultaneously to the outer surface of the cylindrical part of the copper body 1 and to the outer surface of the flange 2, press each of the fins 4 in the radial direction against the Support star 11, as can be seen in FIG. 3b. Since the radial movement of the order catch of the copper body 1 inevitably reduced, the webs 7 and 9 break off, as shown in FIGS. 3b and 5, in the area defined by the bottom of the longitudinal grooves 3 and 6 or radial grooves 5 and 9.
  • the width of the longitudinal grooves 3 and the radial grooves 5 decreases to the final value, since a further reduction in the circumference and thus a further reduction in the width of the grooves 3 and 5 is no longer possible when the bridges 14 and 15 have completely filled the grooves 6 and 8 and come into contact with the remaining groove flank.
  • the copper body 1 is again a rigid body.
  • the support star 11 is now pulled out of the copper body 1, which is supported on a bushing 10 and a holding part of the pressing tool which receives it.
  • the compressed copper body 1 can then be stored without a barrel ring or the like until it is pressed out with an insulating molding compound.
  • anchoring hooks are formed on the inside of the lamellae 4 before they are pressed out, by splitting off, which significantly improve the connection of the lamellae to the molding compound body.
  • the cylindrical part of the copper body 1 and the flange 2 are turned off until the bridges 14 and 15 are removed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Motor Or Generator Current Collectors (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Press Drives And Press Lines (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Push-Button Switches (AREA)
EP80107080A 1980-03-24 1980-11-15 Verfahren zur Herstellung von Formpresskommutatoren Expired EP0036444B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80107080T ATE10315T1 (de) 1980-03-24 1980-11-15 Verfahren zur herstellung von formpresskommutatoren.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
YU817/80 1980-03-24
YU00817/80A YU81780A (en) 1980-03-24 1980-03-24 Method of producing a cast in commutator

Publications (3)

Publication Number Publication Date
EP0036444A2 EP0036444A2 (de) 1981-09-30
EP0036444A3 EP0036444A3 (en) 1981-11-11
EP0036444B1 true EP0036444B1 (de) 1984-11-14

Family

ID=25551553

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80107080A Expired EP0036444B1 (de) 1980-03-24 1980-11-15 Verfahren zur Herstellung von Formpresskommutatoren

Country Status (14)

Country Link
US (1) US4370799A (ro)
EP (1) EP0036444B1 (ro)
JP (1) JPS56133954A (ro)
AT (1) ATE10315T1 (ro)
BG (1) BG32120A3 (ro)
DD (1) DD155126A5 (ro)
DE (1) DE3069641D1 (ro)
DK (1) DK147562C (ro)
ES (1) ES498388A0 (ro)
HU (1) HU182241B (ro)
PL (1) PL137637B1 (ro)
RO (1) RO78997A (ro)
SU (1) SU1041023A3 (ro)
YU (1) YU81780A (ro)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3201027C2 (de) * 1982-01-15 1986-11-27 Robert Bosch Gmbh, 7000 Stuttgart Verfahren zum Herstellen eines Kommutatorringes
DE3243191A1 (de) * 1982-11-23 1984-05-24 Robert Bosch Gmbh, 7000 Stuttgart Verfahren zum herstellen eines kommutatorringes fuer einen kommutator
DE3333335A1 (de) * 1983-09-15 1985-03-28 Robert Bosch Gmbh, 7000 Stuttgart Verfahren zum herstellen einer zwischenstufe fuer einen kommutatorsegmentring
DE102008040717A1 (de) * 2008-07-25 2010-01-28 Robert Bosch Gmbh Kommutator für eine elektrische Maschine sowie System
DE102013207887A1 (de) * 2013-04-30 2014-10-30 Robert Bosch Gmbh Verfahren zur Herstellung eines Kollektors für eine Kommutierungseinrichtung
CN104874714B (zh) * 2015-04-24 2016-06-01 浙江东瑞机械工业有限公司 一种换向片制作方法
CN104759569B (zh) * 2015-04-24 2016-06-15 浙江东瑞机械工业有限公司 换向片制作方法
CN106734736A (zh) * 2015-11-24 2017-05-31 宁波胜克换向器有限公司 一种将换向器钩脚压制呈圆角的压合模具

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE961910C (de) * 1954-12-31 1957-04-11 Bosch Gmbh Robert Verfahren zum Herstellen eines Stromwenders aus einem ringfoermigen Werkstueck
JPS4837761B1 (ro) * 1969-06-13 1973-11-13
DE2028857C3 (ro) * 1969-06-13 1975-05-28 Hitachi Ltd., Tokio

Also Published As

Publication number Publication date
DK147562C (da) 1985-03-04
PL137637B1 (en) 1986-07-31
EP0036444A2 (de) 1981-09-30
US4370799A (en) 1983-02-01
SU1041023A3 (ru) 1983-09-07
EP0036444A3 (en) 1981-11-11
HU182241B (en) 1983-12-28
DK147562B (da) 1984-10-01
DE3069641D1 (en) 1984-12-20
JPS56133954A (en) 1981-10-20
ES8202198A1 (es) 1982-01-01
PL229183A1 (ro) 1981-10-30
RO78997A (ro) 1982-06-25
BG32120A3 (en) 1982-05-14
ATE10315T1 (de) 1984-11-15
DK487180A (da) 1981-09-25
ES498388A0 (es) 1982-01-01
DD155126A5 (de) 1982-05-12
YU81780A (en) 1982-10-31

Similar Documents

Publication Publication Date Title
DE3323640A1 (de) Verbindungseinrichtung zwischen einem rohrfoermigen koerper und einem ringfoermigen teil sowie verfahren zur herstellung dieser verbindung
DE3438454C2 (de) Verfahren zur Herstellung von Kupplungszahnrädern für Getriebe von Kraftfahrzeugen
DE3413072C2 (de) Verfahren zum Herstellen von axialen Blindnuten in einer Ventilhülse
EP0758039A1 (de) Ankerschiene für die Bautechnik
DE3230257C2 (de) Verfahren zur Herstellung eines Kommutatorhalbfabrikates
DE2509107C2 (de) Verfahren zum Herstellen eines Kommutators
EP0036444B1 (de) Verfahren zur Herstellung von Formpresskommutatoren
DE4411410A1 (de) Kaltformverfahren für Zahnringprodukte und Gerät zum Ausformen derselben
DE3245699A1 (de) Kommutator und verfahren zu seiner herstellung
EP0791236A1 (de) Steckkommutator und verfahren zu dessen herstellung
DE4212650C2 (de) Vorrichtung zum Herstellen einer Schraubenkeil-Verzahnung mit Anschlag auf einer Welle
DE19708027A1 (de) Verfahren zum Herstellen einer metallischen Zahnradscheibe
EP0085388B1 (de) Verfahren zur Herstellung einer Metallmuffe aus einem zylindrischen Rohrabschnitt
EP0400345A1 (de) Verbindungselement
DE3705426A1 (de) Verfahren zum herstellen einer einstueckigen ventilhuelse
DE19543998B4 (de) Verfahren zum Herstellen eines Kommutatorringes für einen Kommutator
EP0350855B1 (de) Kommutator und Verfahren zu seiner Herstellung
DE2220657A1 (de) Anordnung zum befestigen zweier bauteile
DE4444857C1 (de) Verfahren und Vorrichtung zur Herstellung mindestens einer Öffnung in der Wandung eines rohrartigen Teils
DE19913091A1 (de) Mehrstufige Riemenscheibe sowie Verfahren zu ihrer Herstellung
DE3823844A1 (de) Kommutator fuer elektrische maschinen und verfahren zu seiner herstellung
EP3746269B1 (de) Federarmhülse
DE2322351A1 (de) Selbstschneidendes gewinde-befestigungsglied sowie verfahren und gewinderollbackenpaar zu dessen herstellung
DE2904255C2 (de) Verfahren zur Herstellung eines Verbundprofiles, insbesondere für Fenster- und Türrahmen, Fassaden o.dgl.
EP0524393B1 (de) Verfahren zur Herstellung eines Kommutators und Vorrichtung zur Durchführung des Verfahrens

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LU NL SE

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LU NL SE

17P Request for examination filed

Effective date: 19811119

ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 10315

Country of ref document: AT

Date of ref document: 19841115

Kind code of ref document: T

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19841130

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19841130

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19841212

Year of fee payment: 5

REF Corresponds to:

Ref document number: 3069641

Country of ref document: DE

Date of ref document: 19841220

ET Fr: translation filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19841231

Year of fee payment: 5

Ref country code: BE

Payment date: 19841231

Year of fee payment: 5

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19851114

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19851130

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19861115

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19861130

BERE Be: lapsed

Owner name: KOLEKTOR P.O.

Effective date: 19861130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19870601

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19871116

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19871130

Ref country code: CH

Effective date: 19871130

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19890731

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19891031

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19900130

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19901115

GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19910801

EUG Se: european patent has lapsed

Ref document number: 80107080.6

Effective date: 19880912