EP2525926A1 - Procédé de fabrication d'une partie de transmission à symétrie de révolution et partie de transmission - Google Patents

Procédé de fabrication d'une partie de transmission à symétrie de révolution et partie de transmission

Info

Publication number
EP2525926A1
EP2525926A1 EP10740687A EP10740687A EP2525926A1 EP 2525926 A1 EP2525926 A1 EP 2525926A1 EP 10740687 A EP10740687 A EP 10740687A EP 10740687 A EP10740687 A EP 10740687A EP 2525926 A1 EP2525926 A1 EP 2525926A1
Authority
EP
European Patent Office
Prior art keywords
flange
produced
pressing
drive part
thickness
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
Application number
EP10740687A
Other languages
German (de)
English (en)
Other versions
EP2525926B1 (fr
Inventor
Udo Friese
Heiko Ohlscher
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.)
WF Maschinenbau und Blechformtecknik GmbH and Co KG
Original Assignee
WF Maschinenbau und Blechformtecknik GmbH and Co KG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=43797529&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2525926(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by WF Maschinenbau und Blechformtecknik GmbH and Co KG filed Critical WF Maschinenbau und Blechformtecknik GmbH and Co KG
Publication of EP2525926A1 publication Critical patent/EP2525926A1/fr
Application granted granted Critical
Publication of EP2525926B1 publication Critical patent/EP2525926B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/26—Making other particular articles wheels or the like
    • B21D53/28—Making other particular articles wheels or the like gear wheels

Definitions

  • the invention relates to a method for producing a rotationally symmetrical gear part according to the preamble of claim 1 and to a gear part produced according to the method
  • Such gear parts find use in different fields of application, for example as starter rings in motor vehicles.
  • the Ronde is deformed by material thickening on the outer edge by means of one or more spinning roller, with a simultaneous change in thickness of the blank.
  • the invention has for its object to further develop a method of the generic type so that a simpler and more cost-effective production with improved product quality is possible.
  • the annular blank which forms the semifinished product can consist of a welded flat iron, a pipe section, a forged or ring-coarse precursor whose wall thickness substantially corresponds to the thickness of the casing part of the finished gear part in which Hersgnac a starter ring, an external toothing is introduced.
  • the flange to be formed according to the invention adjoins the shell part and is preferably pressed or deformed radially inwards by pressing by means of at least one spinning roller, starting from the thickness of the molded part, with wall thinning.
  • the formation of the flange can be performed in several steps, for example, first by molding a frustoconical contour on the ring-shaped blank by means of a pressing tool, and then pressing. forming / forming in the direction of the central axis of the transmission part by means of the spinning roller, with simultaneous dilution of the Flanschwandung.
  • different wall thicknesses can be formed over the contour of the flange, which run continuously in the sense of a wedge or stepped. It is also conceivable to form a hub in the center of the flange by pressing / forming. Furthermore, the final contour can be produced by a pressing tool, in particular in the case of a very complex envelope contour.
  • different wall thicknesses of the flange can also be produced with the help of the pressure roller, depending on the delivery of the pressure roller in the axial as well as in the radial direction of the transmission part, so that different thicknesses and contours of the flange can be produced without difficulty.
  • FIG. 1 shows an annular blank 1 which is deformed into a rotationally symmetrical gear part 2, in particular a starter ring, as can be seen schematically in FIG. 4 as a finished product.
  • This blank 1 is held in a tool chuck 7 (FIG. 2) of a device for carrying out the method with a section which forms a casing part 3 in the finished product (FIG. 4), while another part protrudes beyond the tool chuck 7, from which then a radially extending flange 4 is formed.
  • the pressing tool 5 is pressed axially against the cylindrical, projecting portion of the blank 1.
  • the flange 4 is formed by means of a radially and axially deliverable spinning roller 6, which extends radially to the central axis, at right angles to the jacket part 3.
  • the outside of the casing part 3 can be provided with, for example, an external toothing.
  • the precursor present as a semifinished product is set in rotation in accordance with FIG. 2, while the freely rotating pusher roller 6 is delivered radially and axially.
  • a concentric, axially oriented hub can also be molded onto the flange 4, likewise by pressing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Forging (AREA)

Abstract

L'invention concerne un procédé de fabrication d'une partie de transmission à symétrie de révolution d'une seule pièce, notamment d'une couronne de démarreur, avec une partie d'enveloppe extérieure (3) à laquelle se raccorde une bride coudée (4) d'épaisseur différente de celle-ci, orientée vers l'axe médian. Le procédé est réalisé de telle sorte que la bride (4) soit formée par façonnage d'une partie périphérique d'une ébauche (1) de forme annulaire.
EP10740687.8A 2010-01-18 2010-08-11 Procédé de fabrication d'une partie de transmission à symétrie de révolution Not-in-force EP2525926B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010004932 DE102010004932A1 (de) 2010-01-18 2010-01-18 Verfahren zur Herstellung eines rotationssymmetrischen Getriebeteiles sowie Getriebeteil
PCT/EP2010/061692 WO2011085829A1 (fr) 2010-01-18 2010-08-11 Procédé de fabrication d'une partie de transmission à symétrie de révolution et partie de transmission

Publications (2)

Publication Number Publication Date
EP2525926A1 true EP2525926A1 (fr) 2012-11-28
EP2525926B1 EP2525926B1 (fr) 2013-12-11

Family

ID=43797529

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10740687.8A Not-in-force EP2525926B1 (fr) 2010-01-18 2010-08-11 Procédé de fabrication d'une partie de transmission à symétrie de révolution

Country Status (4)

Country Link
EP (1) EP2525926B1 (fr)
DE (1) DE102010004932A1 (fr)
ES (1) ES2451520T3 (fr)
WO (1) WO2011085829A1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2983033A (en) 1960-01-04 1961-05-09 Darwin S Cox Method of manufacturing dished disks and the like

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19511963C2 (de) * 1995-03-31 2000-12-07 Leifeld Gmbh & Co Verfahren zur Herstellung von rotationssymmetrischen metallischen Werkstücken
DE19620812B4 (de) * 1996-05-23 2005-07-28 Leifeld Metal Spinning Gmbh Verfahren zum Herstellen eines rotationssymmetrischen Körpers
DE502004005869D1 (de) 2003-11-17 2008-02-14 Wf Maschinenbau Blechformtech Verfahren zur herstellung eines flansches an einer blechronde
JP2009195916A (ja) * 2008-02-19 2009-09-03 Nippon Spindle Mfg Co Ltd 内歯車部材の成形方法及び成形装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2983033A (en) 1960-01-04 1961-05-09 Darwin S Cox Method of manufacturing dished disks and the like

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2011085829A1

Also Published As

Publication number Publication date
ES2451520T3 (es) 2014-03-27
EP2525926B1 (fr) 2013-12-11
DE102010004932A1 (de) 2011-07-21
WO2011085829A1 (fr) 2011-07-21

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