EP1769567A1 - Method for the production of a planar commutator and conductor blank for a planar commutator - Google Patents
Method for the production of a planar commutator and conductor blank for a planar commutatorInfo
- Publication number
- EP1769567A1 EP1769567A1 EP05770249A EP05770249A EP1769567A1 EP 1769567 A1 EP1769567 A1 EP 1769567A1 EP 05770249 A EP05770249 A EP 05770249A EP 05770249 A EP05770249 A EP 05770249A EP 1769567 A1 EP1769567 A1 EP 1769567A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- edge
- band
- blank
- conductor
- segments
- 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.)
- Granted
Links
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
-
- 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
- H01R39/06—Commutators other than with external cylindrical contact surface, e.g. flat 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
- Y10T29/49009—Dynamoelectric machine
- Y10T29/49011—Commutator or slip ring assembly
Definitions
- the present invention relates to a method for the production of a planar commutator, which comprises a support body made of molded material, a plurality of conductor segments arranged uniformly around an axis, anchored in the support body, and an equally large number of electrically conductive ones Having Bürstenlaufflä ⁇ che defining carbon segments, comprising the following steps:
- Molding the carrier body by injecting plasticized molding material into the injection mold; Removing the commutator blank from the injection mold;
- Dividing the carbon ring disk into individual segments and removing or cutting through the bridge elements is used, for example, for the production of the flat commutators known from DE 19956844 A1 and DE 19752626 A1.
- a Plankommuta ⁇ gate with carbon tread is made according to the generic Ver ⁇ drive.
- the conductor blank is provided in each case by extrusion-forming a sheet punched out of a metal sheet (in particular copper sheet), the later contact seams of the conductor segments emerging from the center of the sheet, the later connection hooks from the edge portion of the sheet and the later hooks ⁇ lying ring area the later terminal areas of the conductor segments.
- Such Leiterrohlin ⁇ prefabricated by extrusion molding Leit are also used in the production of plan commutators with carbon bearing surface by other methods, for example, the bridge parts are removed before spraying the carrier body, after previously the conductor blank with the carbon ring was assembled into a composite part (see DE 4028420 A1), or else the carbon ring disk is first applied to the already separated conductor segments after the carrier body has been injection-molded onto the conductor blank and then the bridge parts have been removed (see WO 97/03486 A1).
- the flat commutator according to DE 19956844 A1 produced using the generic method meets high requirements.
- the prefabrication of the blank blank is distinguished by the following features: provision of a metallic longitudinal strip shaped by a first edge and a pa rallel thereto the second edge is limited, wherein the band has a main portion, which by a on one, first side of the band adjacent to the first edge angeord ⁇ designated first stage and on the other, second side of the band adjacent to the second edge second stage is limited, a arranged between the first edge and the first stage first Randab ⁇ section and arranged between the second edge and the second stage second edge portion auf ⁇ has and the material thickness of the band at the first and the second stage respectively from the main section to the corresponding Edge portion decreases, and wherein, in addition, the band has on its first side in the region of the second edge section a third step, at which the material thickness increases in the direction of the second edge;
- the method according to the invention does not require any flow molding, because a strip-shaped pre-profiled strip starting material is used for producing the conductor blank, because the wall thickness of the bridge parts is the same as the wall thickness of the terminal regions Conductor segments and because the contact tongues, in order to ensure optimum connection to the carbon segments and with the carrier body, are profiled on their axial end faces solely by an axial shear.
- the technical complexity for the implementation of the method according to the invention is correspondingly reduced;
- all soft annealing of the material in the context of the production process can be dispensed with.
- the bridge elements are completely removed by twisting off in a single operation. This is made possible by the fact that the connecting hooks of the commutator blank are aligned in the axial direction, so that they do not hinder the twisting off of the bridge parts. In contrast, in the prior art, as a result of the radially aligned connection ken complete twisting the bridge parts in a single operation is not possible.
- the section of the metallic strip is first cut to length from a supply before the two edge sections of the strip are subsequently punched out in the first edge section and the contact tongues in the second edge section to form the connection hooks.
- the section of the metallic strip is cut to length after the two edge sections of the strip have been punched out in the first edge section and the contact tongues in the second edge section to form the connection hooks.
- the section of the metallic strip is cut to length and the two edge sections of the strip are punched out to form the connection hooks and the contact tongues.
- the invention allows several possibilities.
- the section of the strip is first rolled to form a closed ring structure, before the corrugation is subsequently introduced into the section of the strip;
- the corrugation is subsequently introduced into the section of the strip;
- the conductor segments are radially displaced radially inward by corresponding radial punches until they have profiled on a correspondingly profiled section Lie against the inner tool.
- the section of the strip is rolled to form a closed ring structure, after the corrugation has previously been introduced into the section of the strip, in particular in a stamping press. And here, too, comes into consideration, according to a third variant of the method, after the contour has been punched out beforehand, to roll the section in a single working step to form a closed ring structure and at the same time introduce the corrugation.
- the contact pads are bent inwards in two steps in the direction of the axis, the second step being a calibration step.
- the conductor blank is to be manufactured with particularly low tolerances in order to be able to be joined together with the carbon ring disk to form reliably electrically conductive connections.
- this applies in the case of a positive engagement of the profi ⁇ profiled contact tongues of the conductor segments in korrespondie ⁇ profiled recordings of the carbon ring disc.
- Anchor parts as they are to be arranged on the radial inner side of the Porter ⁇ segments to be embedded when spraying the Sukör ⁇ pers in the molding material and there to anchor the conductor segments, are preferred in the context of the inventive method by axially splitting the radial inner surfaces the terminal areas of the conductor segment manufactured. Two anchor parts are preferably split off from the respective connection region per conductor segment, specifically after the corrugation has been introduced.
- the punching of the contact tongues extends only in the second edge portion of the band.
- the second stage is circumferentially closed as a sealing surface for a seal of the injection molding tool.
- the punching preferably extends from the first edge beyond the first step into the main section of the band.
- the corresponding punching of the connection hooks in the region of the main section is particularly preferably limited by conical edges against which the injection molding tool bears in a sealing manner.
- a particularly preferred annular closed conductor blank suitable for use in a method for producing a planar commutator connects a plurality of conductor segments uniformly arranged around an axis and two adjacent conductor segments each Bridge parts comprises, wherein the conductor segments have substantially axially aus ⁇ directed terminal areas, each with a connection hook and substantially radially inwardly aligned Kon ⁇ taktzept, wherein the conductor blank from a longitudinal step profiled metallic strip herge ⁇ presents and in the region of one of the bridge parts before a shock ⁇ hand is and the bridge parts are designed in the form of waves that protrude outwards relative to the conductor segments and have substantially the same wall thickness as the conductor segments.
- Such a conductor blank can obviously be used advantageously not only in the above-explained method. Rather, it can be used with matching advantages even in modified processes with a modified sequence of production steps.
- the surface of the conductor blank as a whole, but at least in the areas provided for contact with the - later emerging from the Kohstofstoffringin - carbon segments provided areas the tongues silvered or tinned.
- mög ⁇ Lich for producing a plurality of matching Lei ⁇ terrohlinge use a longitudinal step pre-profiled metallic strip material whose width substantially equal to a multiple of the width of the metallization required for the manufacture of a single conductor blank metalli ⁇ 's band.
- the term "edge" in the context of the present application is to be understood as meaning that it defines a physical edge of the strip-shaped strip only in the event that a metallic strip flat material with such a width is used as the starting material. that can not punch out several adjacent band sections.
- edge indicates a fictitious limitation of the relevant section from the starting material used to produce the respective strip section.
- FIG. 1 is a perspective view of a conductor blank prefabricated in application of the present invention, as used for producing the planar commutator shown in FIG. 4, FIG.
- FIG. 2 shows a cross section through the longitudinal step-shaped band used for producing the conductor blank shown in FIG. 1, FIG.
- FIG. 3 shows a side view of the later radial inner side of the strip section used for producing the conductor blank shown in FIG. 1 after the edge sections have been punched out and
- FIG. 3 shows a side view of the later radial inner side of the strip section used for producing the conductor blank shown in FIG. 1 after the edge sections have been punched out and
- Fig. 4 in axial section a produced in accordance with the present invention Plankommutator.
- the annularly closed conductor blank 1 illustrated in FIG. 1 comprises eight conductor segments 3, which are arranged uniformly around the axis 2, and eight bridge parts 4, which connect two adjacent conductor segments 3 to one another.
- Each conductor segment has on the one hand a substantially axially aligned connection region 5 with a likewise axially aligned connection hook 6 and on the other hand a substantially radially inwardly aligned contact tongue 7.
- the bridge parts 4 project in waveform radially outward beyond the terminal portions 5 of the conductor segments 3.
- Their wall thickness D 1 corresponds to the wall thickness D 2 of the terminal portions 5 of the conductor segments 3. The waves rise so far that the maximum distance of its inner wall from the axis 2 is greater than the distance of the outer wall of the terminal portions 5 of the axis.
- the conductor blank has been produced by a series of simple forming steps from a metallic longitudinal strip-shaped band 8 with the cross section shown in FIG.
- the band 8 On its one, first side 9, which represents the later radial inner surface, the band 8 has a first step 10 which, from the first edge 11 of the band 8 adjacent to this step, forms an increase in material thickness.
- the band 8 On its first side 9 opposite slaughter ⁇ th page 12, which forms the later radial outer surface, the band 8 on a second stage 13, which in turn forms an increase in the material thickness of the adjacent her second edge 14 of the belt 8 ago.
- the first stage 10 and the second stage 13 maintain a distance A to one another.
- the region of the band 8 lying between the first step 10 and the second step 13 forms the main section H.
- the region of the band 8 lying between the first edge 11 and the first step 10 forms the first edge section 17 thereof
- Edge 14 and the second stage 13 lying portion of the belt 8 forms the second edge portion 18th
- the band 8 also has a third step 15 in the second edge section 18 on the first side 9. At the third stage 15, the material thickness increases in the direction of the second edge 14.
- a section 16 is first of all punched out of a supply of the longitudinally profiled metal strip (FIG. 3) in a first working step.
- the connection hooks 6 in the first edge section 17, the contact tongues 7 in the second edge section 18 and partly the main section H and the end regions are punched out with two mutually corresponding engagement sections 19 and 20 of a dovetail-shaped lock 21.
- the band portion 16 is rolled to form a closed ring structure, wherein the shock-locking lock 21 is closed.
- the corrugation is introduced into the ring-shaped closed band section 16, in which the conductor segments 3 are displaced radially inwardly by corresponding radial punches in a corresponding tool, while a profiled internal tool supports the bridge components 4 from radially inward.
- the contact tongues 7 are bent inwards in the direction of the axis 2 in two work steps.
- the contact regions are then profiled by axial shearing in complementary upper and lower tools, before finally, by means of a gap step, armature parts 22 are produced on the radial inner surfaces of the connection regions 5 of the conductor segments 3.
- the conductor blank 1 produced in this way is further processed in a substantially known process (cf., DE 19956844 A1) for producing a planar commutator 23 with a carbon brush running surface 24.
- a carbon ring disk is joined together with the conductor blank 1 to form a composite part, thereby producing electrically conductive connections between the contact tongues 7 of the conductor segments 3 and the carbon ring disk.
- the composite part is then placed in an open injection mold. The injection mold is closed.
- a first part tool rests against a first sealing surface formed by the first step 10, the side surfaces 25 of the conical foot sections 26 of the connection hooks 6 and the associated end faces 27 of the bridge parts 4; and a second part tool abuts against a second sealing surface formed by the second step 13 and the associated end faces of the bridge parts 4.
- the carrier body 28 is formed by injecting plasticized material into the injection mold. After the molding material has hardened, the injection molding tool is opened and the resulting commutator blank is removed from the mold Removed injection mold. Finally, the bridging parts 4 are removed by twisting off, and the carbon ring disk is subdivided into individual carbon segments 29 by cuts.
- the band 8 has on its second side 12 in the region of the main section H a fourth step 30 at which the material thickness in the direction of the first edge 11 decreases towards.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Motor Or Generator Current Collectors (AREA)
- Manufacture Of Motors, Generators (AREA)
- Manufacturing Of Electrical Connectors (AREA)
- Dc Machiner (AREA)
- Treating Waste Gases (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Immobilizing And Processing Of Enzymes And Microorganisms (AREA)
- Cell Electrode Carriers And Collectors (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL05770249T PL1769567T3 (en) | 2004-07-16 | 2005-06-30 | Method for the production of a planar commutator and conductor blank for a planar commutator |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004034434A DE102004034434B4 (en) | 2004-07-16 | 2004-07-16 | Method for producing a flat commutator and conductor blank for a flat commutator |
PCT/EP2005/007084 WO2006007952A1 (en) | 2004-07-16 | 2005-06-30 | Method for the production of a planar commutator and conductor blank for a planar commutator |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1769567A1 true EP1769567A1 (en) | 2007-04-04 |
EP1769567B1 EP1769567B1 (en) | 2009-08-26 |
Family
ID=35004319
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05770249A Not-in-force EP1769567B1 (en) | 2004-07-16 | 2005-06-30 | Method for the production of a planar commutator and conductor blank for a planar commutator |
Country Status (14)
Country | Link |
---|---|
US (1) | US20070294877A1 (en) |
EP (1) | EP1769567B1 (en) |
JP (1) | JP4677449B2 (en) |
KR (1) | KR20070029251A (en) |
CN (1) | CN100544136C (en) |
AT (1) | ATE441228T1 (en) |
BR (1) | BRPI0513432A (en) |
DE (2) | DE102004034434B4 (en) |
HK (1) | HK1100591A1 (en) |
MX (1) | MX2007000596A (en) |
PL (1) | PL1769567T3 (en) |
RU (1) | RU2361339C2 (en) |
UA (1) | UA90859C2 (en) |
WO (1) | WO2006007952A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101924315B (en) * | 2009-06-16 | 2014-09-03 | 德昌电机(深圳)有限公司 | Commutator and manufacturing method thereof |
CN112775293A (en) * | 2020-12-31 | 2021-05-11 | 巴博斯电子科技(苏州)有限公司 | Stamping process for product with gap width-thickness ratio less than 1 |
CN112993712B (en) * | 2021-02-23 | 2023-02-28 | 深圳市凯中精密技术股份有限公司 | Manufacturing method of commutator copper shell, commutator copper shell and commutator |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB783210A (en) * | 1955-05-16 | 1957-09-18 | Lucas Industries Ltd | Commutators for dynamo-electric machines or other electrical apparatus |
DE2034502A1 (en) * | 1970-07-11 | 1972-01-27 | Bosch Gmbh Robert | Commutator for electrical machines |
JPS55157887A (en) * | 1980-02-21 | 1980-12-08 | Sugiyama Seisakusho Kk | Method of manufacturing flat commutator |
JPH0279751A (en) * | 1988-09-16 | 1990-03-20 | Sugiyama Seisakusho:Kk | Flat type commutator and manufacture thereof |
DE4028420A1 (en) * | 1990-09-07 | 1992-03-12 | Kautt & Bux Kg | PLANKOMMUTATOR AND METHOD FOR THE PRODUCTION THEREOF |
DE19525584A1 (en) * | 1995-07-13 | 1997-01-16 | Kautt & Bux Commutator Gmbh | Method of manufacturing a flat commutator |
US5925962A (en) * | 1995-12-19 | 1999-07-20 | Walbro Corporation | Electric motor commutator |
JPH10174375A (en) * | 1996-12-09 | 1998-06-26 | Denso Corp | Commutator and its manufacture |
US6114791A (en) * | 1996-11-29 | 2000-09-05 | Denso Corporation | Commutator for motor using amorphous carbon and fuel pump unit using the same |
DE69839598D1 (en) * | 1997-08-21 | 2008-07-24 | Aisan Ind | COMMUTATOR WITH IMPROVED SEGMENT CONNECTIONS |
DE19956844A1 (en) * | 1999-11-26 | 2001-06-13 | Kolektor D O O | Flat commutator, process for its manufacture and blank and carbon disc for use in its manufacture |
MXPA05006707A (en) * | 2000-05-31 | 2005-09-08 | Kolektor Group Doo | Method of producing a flat commutator and a flat commutator produced according to said method. |
-
2004
- 2004-07-16 DE DE102004034434A patent/DE102004034434B4/en not_active Expired - Fee Related
-
2005
- 2005-06-30 KR KR1020077000686A patent/KR20070029251A/en not_active Application Discontinuation
- 2005-06-30 BR BRPI0513432-3A patent/BRPI0513432A/en not_active IP Right Cessation
- 2005-06-30 AT AT05770249T patent/ATE441228T1/en not_active IP Right Cessation
- 2005-06-30 DE DE502005007993T patent/DE502005007993D1/en active Active
- 2005-06-30 CN CNB2005800236314A patent/CN100544136C/en not_active Expired - Fee Related
- 2005-06-30 RU RU2006146872/09A patent/RU2361339C2/en not_active IP Right Cessation
- 2005-06-30 JP JP2007520702A patent/JP4677449B2/en not_active Expired - Fee Related
- 2005-06-30 MX MX2007000596A patent/MX2007000596A/en active IP Right Grant
- 2005-06-30 EP EP05770249A patent/EP1769567B1/en not_active Not-in-force
- 2005-06-30 PL PL05770249T patent/PL1769567T3/en unknown
- 2005-06-30 WO PCT/EP2005/007084 patent/WO2006007952A1/en active Application Filing
- 2005-06-30 UA UAA200613299A patent/UA90859C2/en unknown
- 2005-06-30 US US11/632,560 patent/US20070294877A1/en not_active Abandoned
-
2007
- 2007-08-07 HK HK07108578.6A patent/HK1100591A1/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO2006007952A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20070294877A1 (en) | 2007-12-27 |
JP2008507246A (en) | 2008-03-06 |
ATE441228T1 (en) | 2009-09-15 |
RU2006146872A (en) | 2008-08-27 |
HK1100591A1 (en) | 2007-09-21 |
KR20070029251A (en) | 2007-03-13 |
MX2007000596A (en) | 2007-03-30 |
DE502005007993D1 (en) | 2009-10-08 |
CN1985417A (en) | 2007-06-20 |
RU2361339C2 (en) | 2009-07-10 |
BRPI0513432A (en) | 2008-05-06 |
EP1769567B1 (en) | 2009-08-26 |
UA90859C2 (en) | 2010-06-10 |
CN100544136C (en) | 2009-09-23 |
JP4677449B2 (en) | 2011-04-27 |
PL1769567T3 (en) | 2010-01-29 |
WO2006007952A1 (en) | 2006-01-26 |
DE102004034434B4 (en) | 2006-08-03 |
DE102004034434A1 (en) | 2006-02-16 |
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