EP1337358A1 - Procede et dispositif de production d'une roue dentee - Google Patents

Procede et dispositif de production d'une roue dentee

Info

Publication number
EP1337358A1
EP1337358A1 EP01998418A EP01998418A EP1337358A1 EP 1337358 A1 EP1337358 A1 EP 1337358A1 EP 01998418 A EP01998418 A EP 01998418A EP 01998418 A EP01998418 A EP 01998418A EP 1337358 A1 EP1337358 A1 EP 1337358A1
Authority
EP
European Patent Office
Prior art keywords
toothing
tooth
powder metal
metal blank
teeth
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.)
Ceased
Application number
EP01998418A
Other languages
German (de)
English (en)
Inventor
Christian Sandner
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 Sintermetall 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 Sintermetall GmbH filed Critical Miba Sintermetall GmbH
Publication of EP1337358A1 publication Critical patent/EP1337358A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21HMAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H5/00Making gear wheels, racks, spline shafts or worms
    • B21H5/02Making gear wheels, racks, spline shafts or worms with cylindrical outline, e.g. by means of die rolls
    • B21H5/022Finishing gear teeth with cylindrical outline, e.g. burnishing
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49462Gear making
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49462Gear making
    • Y10T29/49467Gear shaping
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49462Gear making
    • Y10T29/49467Gear shaping
    • Y10T29/49474Die-press shaping
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49462Gear making
    • Y10T29/49467Gear shaping
    • Y10T29/49476Gear tooth cutting
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49462Gear making
    • Y10T29/49467Gear shaping
    • Y10T29/49478Gear blank making
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49462Gear making
    • Y10T29/49467Gear shaping
    • Y10T29/4948Gear shaping with specific gear material
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00Machine element or mechanism
    • Y10T74/19Gearing
    • Y10T74/19949Teeth

Definitions

  • the invention relates to a method for producing a gear from a pressed and sintered powder metal blank with an oversize in the flank or foot region of the teeth, which in the area of the oversize by pressing an engaging in the toothing counter toothing of a press tool under one plastic deformation around the oversize is compressed.
  • a pusher tool in the form of at least one gearwheel which has a counter-toothing which engages in the toothing of the powder metal blank.
  • the teeth of the powder metal blank are thus subjected to post-compression in the engagement area of the pusher tool, to the extent that is provided in the flank or foot area Measurement of the powder metal blank.
  • the load-bearing capacity of the toothing can be increased with the thickness of the post-compressed surface layer. Since the depth of the post-compaction primarily depends on the size of the allowance in the flank and foot area of the toothing, an increase in the load-bearing capacity of the toothing requires increasing allowances, which not only allow the desired closer compression of the flank or foot area, but also Give cause for the teeth to stretch in the direction of the tooth height, especially during the double-sided loading of the tooth flanks of the powder metal blank due to the counter-toothing of the pusher tool. The tensile stresses caused by the tooth extension in the tooth body entail the risk of crack formation, which can result in broken teeth. This means that the depth of post-compaction and thus the possible increase in tooth load-bearing capacity must remain limited.
  • the invention is therefore based on the object to design a method for producing a gear of the type mentioned so that the load-bearing capacity of the toothing can be increased without having to worry about cracks in the tooth body.
  • the invention solves this problem in that during the plastic deformation of the flank or foot area, the tooth tip surface of the respective tooth is acted upon by a compressive force which counteracts an extension of the tooth.
  • the pressure force acting during the plastic deformation of the flank or foot area on the tooth tip surfaces of the teeth prevents the sintered material from flowing in the direction of the tooth height due to the plastic deformation of the flank or foot area, so that the free flow of the Sintered material occurring tensile stresses can be largely suppressed, in connection with an additional, slight compression of the tooth tip.
  • the gap profile between the tooth flanks of the counter-toothing of the trigger tool determines the shape of the tooth tip surface of the teeth of the powder metal blank, so that a desired profile of the tooth tip surface of the teeth of the gear wheel can also be specified via this gap profile, which would otherwise require reworking of the Makes tooth tip surfaces unnecessary.
  • the flow of the sintered material in the radial direction due to the re-compression of the tooth flanks of the powder metal blank is inhibited by the gap profile of the pusher tool, the gap profile having a shaping effect on the tooth tip surface.
  • the pressed and sintered powder metal blank 1 with a corresponding allowance in the tooth flank area is clamped on a receiving shaft and machined with the aid of a pusher tool 2 which has a ring gear with counter teeth 3 for the teeth 4 of the powder metal blank 1.
  • the tooth geometry of the counter-toothing 3 is based on the desired geometry of the toothing 4 of the gear wheel to be manufactured.
  • the powder metal blank 1 Since the powder metal blank 1 has an oversize in the area of the tooth flanks 6 of its teeth 7, this means that when the trigger tool 2 is rolled on the powder metal blank 1, the tooth flanks 6 of the toothing 4 of the powder metal blank 1 are plastically deformed by the teeth 5 of the counter-toothing 3 of the trigger tool 2 by the allowance to the desired course, namely with a recompression of a surface layer 8, which is indicated in dashed lines in the drawing.
  • the teeth 7 of the powder metal blank 1 tend, particularly with a flank load on both sides by the press tool 2, to radial stretching, which leads to tensile stresses within the tooth body.
  • the foot height h f of the teeth 5 of the trigger tool 2 measured between the root circle 9 and the pitch circle 10 of the counter toothing 3 corresponds to the head height h k of the teeth 7 measured between the pitch circle 11 and the pitch circle 12 Tooth 4 of the powder metal blank 1.
  • This simple measure exerts a compressive force on the tooth tip surface 14 of the teeth 7 of the powder metal blank 1 via the gap profile 13 between the flanks of the teeth 5 of the counter toothing 3 with the effect that the stretching is prevented and the tooth tip surface 14 a shape predetermined by the gap profile 13 is forced.
  • the tensile stresses that otherwise occur due to a radial flow of the sintered material in the region of the tooth body can be largely suppressed, which leads to a greater depth of the compressed surface layer 8 in the tooth flank region.
  • there is an additional compression of the tooth head there is an additional compression of the tooth head.

Landscapes

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

Abstract

L'invention concerne un procédé et un dispositif de production d'une roue dentée à partir d'une ébauche en poudre métallique (1) pressée et frittée, dotée dans la zone flanc ou pied des dents d'une surépaisseur, cette ébauche étant serrée, dans la zone de la surépaisseur, par la pression d'une contre-denture (3) d'un outil de pression (2). Cette contre-denture (3) s'engrène avec la denture (4) en produisant une déformation plastique autour de la surépaisseur. Pour créer des conditions avantageuses, pendant la déformation plastique de la zone flanc ou pied, la surface du sommet de la dent concernée est soumise à l'action d'une force de pression agissant à l'encontre de l'étirage de la dent.
EP01998418A 2000-11-30 2001-11-28 Procede et dispositif de production d'une roue dentee Ceased EP1337358A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT0201200A AT409466B (de) 2000-11-30 2000-11-30 Verfahren und vorrichtung zum herstellen eines zahnrades
AT20122000 2000-11-30
PCT/AT2001/000374 WO2002043897A1 (fr) 2000-11-30 2001-11-28 Procede et dispositif de production d'une roue dentee

Publications (1)

Publication Number Publication Date
EP1337358A1 true EP1337358A1 (fr) 2003-08-27

Family

ID=3689614

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01998418A Ceased EP1337358A1 (fr) 2000-11-30 2001-11-28 Procede et dispositif de production d'une roue dentee

Country Status (8)

Country Link
US (1) US7111395B2 (fr)
EP (1) EP1337358A1 (fr)
JP (1) JP2004521743A (fr)
AT (1) AT409466B (fr)
AU (1) AU2002223255A1 (fr)
BR (1) BR0115767B1 (fr)
SK (1) SK6662003A3 (fr)
WO (1) WO2002043897A1 (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2360825B (en) * 2000-03-30 2004-11-17 Formflo Ltd Gear wheels roll formed from powder metal blanks
DE102005027048A1 (de) * 2005-06-10 2006-12-14 Gkn Sinter Metals Gmbh Gesintertes Verzahnungselement mit lokal-selektiver Oberflächenverdichtung
DE102005027054A1 (de) * 2005-06-10 2006-12-28 Gkn Sinter Metals Gmbh Werkstück mit unterschiedlicher Beschaffenheit
DE102005027144A1 (de) * 2005-06-10 2006-12-14 Gkn Sinter Metals Gmbh Oberflächenverdichtung einer Verzahnung
DE102005027050B4 (de) * 2005-06-10 2021-12-30 Gkn Sinter Metals Gmbh Kraftfahrzeugbauteil mit Verzahnung
DE102005027142A1 (de) * 2005-06-10 2006-12-14 Gkn Sinter Metals Gmbh Vorformgeometrie einer Verzahnung
DE102005027137A1 (de) * 2005-06-10 2006-12-14 Gkn Sinter Metals Gmbh Verzahnung aus Sintermaterial
DE102005027049A1 (de) * 2005-06-10 2006-12-14 Gkn Sinter Metals Gmbh Belastbare Verzahnung
JP4361916B2 (ja) * 2005-07-05 2009-11-11 神奈川県 金属部材の表面強化方法
DE102006014804B3 (de) * 2006-03-29 2007-09-20 Schunk Sintermetalltechnik Gmbh Verfahren zur Herstellung von Zahnrädern
AT505150B1 (de) * 2006-10-24 2008-11-15 Miba Sinter Austria Gmbh Mehrfachrad
DE102007017259B4 (de) * 2007-04-12 2009-04-09 Siemens Ag Verfahren zur rechnergestützten Steuerung und/oder Regelung eines technischen Systems
JP5755545B2 (ja) * 2011-10-11 2015-07-29 トヨタ自動車株式会社 歯車及び変速装置
CN103671820B (zh) * 2012-09-21 2017-12-12 恩普乐股份有限公司 齿轮及其制造方法
JP7243025B2 (ja) * 2018-03-20 2023-03-22 いすゞ自動車株式会社 動力伝達部品の疲労度合い推定装置および動力伝達部品の疲労度合い推定方法
US11707786B2 (en) * 2020-04-17 2023-07-25 PMG Indiana LLC Apparatus and method for internal surface densification of powder metal articles
US11707792B2 (en) * 2020-09-28 2023-07-25 GM Global Technology Operations LLC Scattered topography rolling of powered metal gears

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4106361A (en) * 1976-10-26 1978-08-15 Wyle Laboratories Gear pump, gear and method
US4111031A (en) * 1977-09-09 1978-09-05 General Motors Corporation Powder metal crown gear forming process
GB2250227B (en) * 1990-10-08 1994-06-08 Formflo Ltd Gear wheels rolled from powder metal blanks
JPH10176203A (ja) * 1996-12-16 1998-06-30 Toyota Motor Corp 焼結歯車部品の表面緻密化方法
US6044555A (en) * 1998-05-04 2000-04-04 Keystone Powered Metal Company Method for producing fully dense powdered metal helical gear
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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0243897A1 *

Also Published As

Publication number Publication date
AU2002223255A1 (en) 2002-06-11
SK6662003A3 (en) 2003-12-02
US20040016123A1 (en) 2004-01-29
US7111395B2 (en) 2006-09-26
ATA20122000A (de) 2002-01-15
BR0115767A (pt) 2004-01-13
WO2002043897A1 (fr) 2002-06-06
BR0115767B1 (pt) 2010-09-08
AT409466B (de) 2002-08-26
JP2004521743A (ja) 2004-07-22

Similar Documents

Publication Publication Date Title
AT409466B (de) Verfahren und vorrichtung zum herstellen eines zahnrades
DE60036608T2 (de) Verfahren und vorrichtung zum verdichten von metallpulver-vorformlingen
EP2066468B2 (fr) Procédé et appareil pour la densification de la surface d'une pièce frittée
DE60007857T2 (de) Verfahren zum Verdichten der Wand einer Öffnung eines Rohlings aus metallischem Pulver
EP1133374B1 (fr) Procede pour la production d'une piece frittee avec formage ulterieur de l'ebauche
DE2219856B2 (de) Verfahren zum Herstellen von in einem Arbeitsgang geschmiedeten Sinterschmiedewerkstücken
EP2611560B1 (fr) Roue dentée frittée
EP0790426B1 (fr) Procédé de fabrication d'une lamelle de friction plane
DE2557764C3 (de) Verfahren und Vorrichtung zur Formung eines Tiefbettfelgenrohlings
AT503037B1 (de) Verfahren zum herstellen eines zahnrades
EP1027179B1 (fr) Procede et dispositif pour la production d'une roue dentee
CH662760A5 (de) Verfahren zur herstellung eines mit wenigstens einer verzahnung versehenen sintermetallkoerpers.
DE1552166A1 (de) Verfahren zur Herstellung von Zahnraedern
AT505150B1 (de) Mehrfachrad
DE19529731A1 (de) Verfahren zur Herstellung von gewellten Metallrohren
EP2282854A1 (fr) Procédé de roulage pour la fabrication de corps profilés cannelés dans des pièces cylindriques ayant la forme d'un pot
EP0826450B1 (fr) Procédé de calibration d'un évidement
WO2006066525A1 (fr) Procede pour realiser des rainures longitudinales dans des pieces cylindriques
DE102005050202A1 (de) Blechteil mit partiellen Verstärkungselementen hergestellt nach dem Außenhochdruckumformverfahren
DE102011114844B4 (de) Verfahren zur Herstellung endkonturnah vorgeschmiedeter Verzahnungen an Schaftwellen
AT412955B (de) Verfahren zum herstellen eines zahnrades
DE10066177B4 (de) Werkzeug und Verfahren zum Querwalzen von Verzahnungen sowie Verfahren zur Herstellung eines Walzwerkzeuges
WO2008055275A1 (fr) Procédé de fabrication d'une roue dentée à partir de métal pulvérisé
DE102005056470A1 (de) Verfahren zur Herstellung von Längsnuten in zylindrische Werkstücke
EP0917926B1 (fr) Procédé de fabrication d' une denture interne dans un élément de machine par usinage, suivie d' un renforcement à froid des fonds des dents

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

17P Request for examination filed

Effective date: 20030510

AK Designated contracting states

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

RBV Designated contracting states (corrected)

Designated state(s): AT BE CH CY DE ES FR IT LI

17Q First examination report despatched

Effective date: 20090910

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: MIBA SINTER AUSTRIA GMBH

APBK Appeal reference recorded

Free format text: ORIGINAL CODE: EPIDOSNREFNE

APBN Date of receipt of notice of appeal recorded

Free format text: ORIGINAL CODE: EPIDOSNNOA2E

APBR Date of receipt of statement of grounds of appeal recorded

Free format text: ORIGINAL CODE: EPIDOSNNOA3E

APAF Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R003

APBT Appeal procedure closed

Free format text: ORIGINAL CODE: EPIDOSNNOA9E

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

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 20111117