EP2012951B1 - Procédé de fabrication d'une roue dentée - Google Patents

Procédé de fabrication d'une roue dentée Download PDF

Info

Publication number
EP2012951B1
EP2012951B1 EP07718414.1A EP07718414A EP2012951B1 EP 2012951 B1 EP2012951 B1 EP 2012951B1 EP 07718414 A EP07718414 A EP 07718414A EP 2012951 B1 EP2012951 B1 EP 2012951B1
Authority
EP
European Patent Office
Prior art keywords
metal blank
powdered metal
profile
powder metal
toothing
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.)
Not-in-force
Application number
EP07718414.1A
Other languages
German (de)
English (en)
Other versions
EP2012951A1 (fr
Inventor
Christian Sander
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.)
Miba Sinter Austria GmbH
Original Assignee
Miba Sinter Austria 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 Miba Sinter Austria GmbH filed Critical Miba Sinter Austria GmbH
Publication of EP2012951A1 publication Critical patent/EP2012951A1/fr
Application granted granted Critical
Publication of EP2012951B1 publication Critical patent/EP2012951B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/28—Making machine elements wheels; discs
    • B21K1/30—Making machine elements wheels; discs with gear-teeth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H5/00—Making gear wheels, racks, spline shafts or worms
    • B21H5/02—Making gear wheels, racks, spline shafts or worms with cylindrical outline, e.g. by means of die rolls
    • B21H5/022—Finishing gear teeth with cylindrical outline, e.g. burnishing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/12—Forming profiles on internal or external surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/08—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of toothed articles, e.g. gear wheels; of cam discs
    • 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
    • Y10T29/49462—Gear making
    • Y10T29/49467—Gear shaping
    • Y10T29/49471—Roll forming

Definitions

  • the invention is therefore based on the object, a method of the type described for the manufacture of a gear in such a way that a good dimensional stability of the gear when compacting the teeth can be ensured without having to accept excessive tool wear or higher tool or workpiece stresses in purchasing.
  • the invention solves this problem by the fact that the powder metal blank is compacted at the same time by an axial rolling to the powder metal blank of the pusher tool forming profile rollers over the entire circumference.
  • the device To carry out the manufacturing process can be assumed by the device with a holder for an oversized pressed and sintered powder metal blank of the gear and with at least one pusher tool, which engages an engaging in the teeth of the powder metal blank Forms counter-toothing.
  • the pusher tool comprises a closed ring of the counter teeth forming profile rollers whose axes are in a common plane perpendicular to the axis of the powder metal blank plane, wherein the profile rollers are guided in parallel to the axis of the powder metal blank profile grooves of the profile rollers surrounding support body.
  • the profile rollers in the common diameter plane optionally without joints join together under an elastic bias and enclose a Sollumriß the gear corresponding cross-section, a sufficient relative to the support body coaxially displaceable, axial support for the powder metal blank to the powder metal blank under a rolling of the profile rollers along the Pressing teeth axially through the cross-section enclosed by the profile roller collar and thereby compacting the teeth of the powder metal blank in the area of the oversize.
  • the occurring rolling forces can be removed in an advantageous manner by the profile rollers on the supporting rollers enclosing the profile rollers, which is provided for rolling the profile rollers with axial profile grooves, in which the profile rollers are guided against lateral displacement.
  • the profile rollers can be held in a relative to the support body axially displaceable cage, which may consist of two profile rollers between them receiving punches in a simple embodiment.
  • a free displaceability of such a cage roll the profile rollers substantially without slip on the one hand on the powder metal blank and on the other hand in the profile of the support body.
  • the cage is axially displaced relative to the support body at a predeterminable speed, then the rolling movement of the profile rollers can be superimposed by a sliding movement, via which influence on the compression ratios in the engagement area of the profile rollers can be taken.
  • the axial holder can have two the powder metal blank between them receiving portions. Form these sections of the holder beyond the tooth spaces of the gear to be produced corresponding axial Profilenuten, the profile rollers can be advantageously performed in these profile grooves and align the holder with the powder metal blank in the circumferential direction.
  • the profile rollers of the pusher tool can touch each other along frontal conical surfaces, so that during plastic compression of the teeth of the powder metal blank penetration of the material between two profile rollers can be excluded Especially when the profile rollers are pressed against each other in the contact area under a resilient bias.
  • the illustrated apparatus for producing a gear from a compacted and sintered powder metal blank 1 has a mandrel 2 radially supporting the powder metal blank 1 at least during its compression in the tooth region, which is mounted in a stationary manner according to the embodiment shown.
  • a holder 3 of two sections 4 and 5 is mounted axially displaceable, which receive the powder metal blank 1 between them form fit.
  • a pusher tool 7 is provided which comprises a closed ring of profile rollers 8, whose axes in a common, to the axis of the dome 2 and thus to Axis of the powder metal blank 1 vertical diameter plane lie.
  • profile rollers 8 form an engaging in the teeth of the powder metal blank 1 counter teeth that cause the rolling of the powder metal blank 1, the compression of the teeth of the powder metal blank 1 in the range of their allowance.
  • the profile rollers 8 engage in axial profile grooves 9 of the profile rollers 8 enclosing the support body 10 a.
  • the profile rollers 8 are guided in the profile grooves 6 of the holder 3, which is thus held aligned relative to the profile rollers 8 in the circumferential direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Powder Metallurgy (AREA)
  • Gears, Cams (AREA)

Claims (6)

  1. Procédé de fabrication d'une roue dentée à partir d'une ébauche en poudre de métal comprimée avec un surdimensionnement dans la zone de denture et frittée, l'ébauche en poudre de métal étant comprimée dans la zone du surdimensionnement par le passage d'un outil de compression formant une contre-denture s'engrenant dans la denture de l'ébauche en poudre de métal, pour atteindre par déformation plastique une compression correspondant au surdimensionnement, caractérisé en ce que l'ébauche en poudre de métal est comprimée simultanément sur toute la périphérie, par le passage, axial par rapport à l'ébauche en poudre de métal, de rouleaux profilés formant l'outil de compression.
  2. Procédé selon la revendication 1, caractérisé en ce que les rouleaux profilés passent sur l'ébauche en poudre de métal avec un glissement prédéfinissable.
  3. Procédé de fabrication d'une roue dentée avec un support pour une ébauche en poudre de métal comprimée avec surdimensionnement et frittée, de la roue dentée, et avec au moins un outil de compression, qui forme une contre-denture s'engrenant dans la denture de l'ébauche en poudre de métal, caractérisé en ce que l'outil de compression (7) comprend une couronne fermée des rouleaux profilés (8) formant la contre-denture, dont les axes sont situés dans un plan commun perpendiculaire à l'axe de l'ébauche en poudre de métal (1), en ce que les rouleaux profilés (8) sont guidés dans des rainures profilées (9), parallèles à l'axe de l'ébauche en poudre de métal (1), d'un corps de soutien (10) comprenant les rouleaux profilés (8), et en ce que le support (3) axial peut être déplacé coaxialement par rapport au corps de soutien (10) pour l'ébauche en poudre de métal (1).
  4. Procédé selon la revendication 3, caractérisé en ce que les rouleaux profilés (8) sont tenus dans une cage (11) pouvant être déplacée axialement par rapport au corps de soutien (10) à une vitesse pré-définissable.
  5. Procédé selon la revendication 3 ou 4, caractérisé en ce que le soutien (3) axial présente pour l'ébauche en poudre de métal (1) deux sections (4, 5) logeant entre elles l'ébauche en poudre de métal (1) qui forment les rainures profilées (6) axiales correspondant aux vides dentés de la roue dentée à fabriquer (8).
  6. Procédé selon l'une des revendications 3 à 5, caractérisé en ce que les rouleaux profilés (8) de l'outil de compression (7) reposent les uns les autres le long de surfaces coniques (14) côté frontal.
EP07718414.1A 2006-05-04 2007-04-27 Procédé de fabrication d'une roue dentée Not-in-force EP2012951B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0076306A AT503037B1 (de) 2006-05-04 2006-05-04 Verfahren zum herstellen eines zahnrades
PCT/AT2007/000198 WO2007128013A1 (fr) 2006-05-04 2007-04-27 Procédé de fabrication d'une roue dentée

Publications (2)

Publication Number Publication Date
EP2012951A1 EP2012951A1 (fr) 2009-01-14
EP2012951B1 true EP2012951B1 (fr) 2017-10-18

Family

ID=38198965

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07718414.1A Not-in-force EP2012951B1 (fr) 2006-05-04 2007-04-27 Procédé de fabrication d'une roue dentée

Country Status (7)

Country Link
US (1) US8069696B2 (fr)
EP (1) EP2012951B1 (fr)
JP (1) JP2009536268A (fr)
CN (1) CN101489701B (fr)
AT (1) AT503037B1 (fr)
CA (1) CA2651016A1 (fr)
WO (1) WO2007128013A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008017608B3 (de) * 2008-04-06 2009-04-30 Aweba Werkzeugbau Gmbh Aue Verfahren zur Herstellung eines innen- und außenverzahnten topfförmigen Blechteiles und eine Vorrichtung hierzu
JP5446612B2 (ja) * 2009-08-28 2014-03-19 Ｔｄｋ株式会社 リチウムイオン二次電池
DE102012214870A1 (de) * 2012-08-22 2014-02-27 Schaeffler Technologies AG & Co. KG Antriebsrad und Verfahren zu seiner Herstellung
US20160317542A1 (en) 2013-12-09 2016-11-03 Respira Therapeutics, Inc. Pde5 inhibitor powder formulations and methods relating thereto
DE102014002219B4 (de) * 2014-02-21 2015-12-10 Gkn Sinter Metals Engineering Gmbh Verfahren und Vorrichtung zur Herstellung eines Zahnrades nebst Spannmittel
DE102016102429B4 (de) * 2016-02-11 2021-02-11 Ecoroll Ag Werkzeugtechnik Walzvorrichtung zum Walzen von Werkstücken mit Verzahnung und zugehöriges Verfahren
CN108246941A (zh) * 2016-12-29 2018-07-06 财团法人金属工业研究发展中心 齿轮的成型装置及其制造方法
US11707786B2 (en) 2020-04-17 2023-07-25 PMG Indiana LLC Apparatus and method for internal surface densification of powder metal articles

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT412955B (de) * 2003-12-19 2005-09-26 Miba Sinter Austria Gmbh Verfahren zum herstellen eines zahnrades

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54146253A (en) 1978-05-08 1979-11-15 Agency Of Ind Science & Technol Method and apparatus for forming gear
GB2250227B (en) 1990-10-08 1994-06-08 Formflo Ltd Gear wheels rolled from powder metal blanks
DE19531907A1 (de) 1995-08-30 1997-03-06 Schuler Pressen Gmbh & Co Vorrichtung und Verfahren zur Herstellung von Profilkörpern
JPH09276979A (ja) 1996-04-15 1997-10-28 Mitsubishi Steel Mfg Co Ltd スプライン成形金型
AT406836B (de) 1997-10-30 2000-09-25 Miba Sintermetall Ag Verfahren und vorrichtung zum herstellen eines zahnrades
US6151941A (en) 1999-01-25 2000-11-28 Federal-Mogul World Wide, Inc. Apparatus and method for roll forming gears
US6168754B1 (en) 1999-02-17 2001-01-02 Federal-Mogul World Wide, Inc. Method and apparatus for densifying powder metal preforms
US7025929B2 (en) * 2004-04-08 2006-04-11 Pmg Ohio Corp. Method and apparatus for densifying powder metal gears
RU2284241C1 (ru) 2005-06-27 2006-09-27 Государственное образовательное учреждение высшего профессионального образования "Санкт-Петербургский Государственный политехнический университет" (ГОУ "СПбГПУ") Способ накатывания зубчатых профилей на биметаллических спеченных заготовках

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT412955B (de) * 2003-12-19 2005-09-26 Miba Sinter Austria Gmbh Verfahren zum herstellen eines zahnrades

Also Published As

Publication number Publication date
WO2007128013A1 (fr) 2007-11-15
CN101489701B (zh) 2010-12-08
CN101489701A (zh) 2009-07-22
AT503037B1 (de) 2007-07-15
EP2012951A1 (fr) 2009-01-14
CA2651016A1 (fr) 2007-11-15
AT503037A4 (de) 2007-07-15
JP2009536268A (ja) 2009-10-08
US20090090154A1 (en) 2009-04-09
US8069696B2 (en) 2011-12-06

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