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WO2008139323A3 - Powder metal internal gear rolling process - Google Patents

Powder metal internal gear rolling process Download PDF

Info

Publication number
WO2008139323A3
WO2008139323A3 PCT/IB2008/001784 IB2008001784W WO2008139323A3 WO 2008139323 A3 WO2008139323 A3 WO 2008139323A3 IB 2008001784 W IB2008001784 W IB 2008001784W WO 2008139323 A3 WO2008139323 A3 WO 2008139323A3
Authority
WO
WIPO (PCT)
Prior art keywords
internal gear
powder metal
rolling process
gear rolling
metal internal
Prior art date
Application number
PCT/IB2008/001784
Other languages
French (fr)
Other versions
WO2008139323A2 (en
Inventor
Roger Lawcock
Joel Wright
Eric Cozens
Original Assignee
Stackpole Limited
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 Stackpole Limited filed Critical Stackpole Limited
Publication of WO2008139323A2 publication Critical patent/WO2008139323A2/en
Publication of WO2008139323A3 publication Critical patent/WO2008139323A3/en

Links

Classifications

    • 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
    • B21H5/025—Internally geared wheels
    • 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
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12—Both compacting and sintering
    • B22F3/16—Both compacting and sintering in successive or repeated steps
    • B22F3/164—Partial deformation or calibration
    • B22F3/168—Local deformation
    • 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
    • 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
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • B22F2003/248—Thermal after-treatment
    • 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
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps
    • 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
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
    • 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

Landscapes

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

Abstract

Internal gears that are traditionally manufactured using metal cutting techniques are costly due to the material that is discarded. A method for forming an internal gear is provided comprising providing a powder metal preform workpiece, supporting the workpiece about its periphery, and roll forming said workpiece to produce a set of densified gear teeth of a predetermined dimension.
PCT/IB2008/001784 2007-05-11 2008-04-15 Powder metal internal gear rolling process WO2008139323A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US91737307P 2007-05-11 2007-05-11
US60/917,373 2007-05-11

Publications (2)

Publication Number Publication Date
WO2008139323A2 WO2008139323A2 (en) 2008-11-20
WO2008139323A3 true WO2008139323A3 (en) 2011-04-28

Family

ID=40002705

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2008/001784 WO2008139323A2 (en) 2007-05-11 2008-04-15 Powder metal internal gear rolling process

Country Status (2)

Country Link
US (1) US20080282544A1 (en)
WO (1) WO2008139323A2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT505118B1 (en) * 2007-03-28 2013-03-15 Miba Sinter Austria Gmbh METHOD FOR PROCESSING A TRENCHING ON A SINTERED PART
CH706436A1 (en) * 2012-04-25 2013-10-31 Grob Ernst Fa Method and apparatus for producing provided with an internal toothing thick-walled hollow wheel gears.
DE102014002219B4 (en) * 2014-02-21 2015-12-10 Gkn Sinter Metals Engineering Gmbh Method and device for producing a toothed wheel together with clamping means
JP6443118B2 (en) * 2015-02-20 2018-12-26 アイシン精機株式会社 Internal gear and its rolling die
DE102016103946A1 (en) * 2016-03-04 2017-09-07 Leifeld Metal Spinning Ag Method and device for forming a workpiece with drum-shaped peripheral wall
AT15793U1 (en) 2017-05-16 2018-07-15 Miba Sinter Austria Gmbh Method for compacting the internal toothing of a toothed wheel
DE102019134155A1 (en) * 2019-12-12 2021-06-17 Gkn Sinter Metals Engineering Gmbh Process for the production of a sintered part
US11707786B2 (en) 2020-04-17 2023-07-25 PMG Indiana LLC Apparatus and method for internal surface densification of powder metal articles

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6592809B1 (en) * 2000-10-03 2003-07-15 Keystone Investment Corporation Method for forming powder metal gears
US6729171B2 (en) * 2002-06-06 2004-05-04 Escofier Technologie S.A.S. Cold forming by rolling of parts made of press sintered material

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3735618A (en) * 1971-06-10 1973-05-29 Reed Rolled Thread Die Co Method and apparatus for internal gear rolling
GB1419770A (en) * 1972-06-29 1975-12-31 Metal Compacting Tools Ltd Press tools
US5711187A (en) * 1990-10-08 1998-01-27 Formflo Ltd. Gear wheels rolled from powder metal blanks and method of manufacture
JP3567629B2 (en) * 1996-07-25 2004-09-22 マツダ株式会社 Method and apparatus for forming annular body having internal teeth
AT406836B (en) * 1997-10-30 2000-09-25 Miba Sintermetall Ag METHOD AND DEVICE FOR PRODUCING A GEAR
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
ATE440688T1 (en) * 2003-07-25 2009-09-15 M H Ct Ltd METHOD FOR PRODUCING A PART WITH INTERNAL GEAR AND ROLLING MACHINE

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6592809B1 (en) * 2000-10-03 2003-07-15 Keystone Investment Corporation Method for forming powder metal gears
US6729171B2 (en) * 2002-06-06 2004-05-04 Escofier Technologie S.A.S. Cold forming by rolling of parts made of press sintered material

Also Published As

Publication number Publication date
WO2008139323A2 (en) 2008-11-20
US20080282544A1 (en) 2008-11-20

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