WO2006131356A3 - Werkstück mit unterschiedlicher beschaffenheit - Google Patents

Werkstück mit unterschiedlicher beschaffenheit Download PDF

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Publication number
WO2006131356A3
WO2006131356A3 PCT/EP2006/005476 EP2006005476W WO2006131356A3 WO 2006131356 A3 WO2006131356 A3 WO 2006131356A3 EP 2006005476 W EP2006005476 W EP 2006005476W WO 2006131356 A3 WO2006131356 A3 WO 2006131356A3
Authority
WO
WIPO (PCT)
Prior art keywords
work piece
different qualities
compressing
compressed
qualities
Prior art date
Application number
PCT/EP2006/005476
Other languages
English (en)
French (fr)
Other versions
WO2006131356A2 (de
Inventor
Gerhard Kotthoff
Original Assignee
Gkn Sinter Metals Holding Gmbh
Gerhard Kotthoff
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 Gkn Sinter Metals Holding Gmbh, Gerhard Kotthoff filed Critical Gkn Sinter Metals Holding Gmbh
Priority to EP06761986A priority Critical patent/EP1888278B9/de
Priority to ES06761986T priority patent/ES2379640T3/es
Priority to CA002611669A priority patent/CA2611669A1/en
Priority to CN200680020667.1A priority patent/CN101466489B/zh
Priority to AT06761986T priority patent/ATE541659T1/de
Publication of WO2006131356A2 publication Critical patent/WO2006131356A2/de
Priority to US11/953,475 priority patent/US20080201951A1/en
Publication of WO2006131356A3 publication Critical patent/WO2006131356A3/de
Priority to US13/422,370 priority patent/US20120227530A1/en

Links

Classifications

    • 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
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
    • C21D7/04—Modifying the physical properties of iron or steel by deformation by cold working of the surface
    • C21D7/08—Modifying the physical properties of iron or steel by deformation by cold working of the surface by burnishing or the like
    • 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
    • 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
    • Y10T29/4948—Gear shaping with specific gear material
    • 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
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/1987—Rotary bodies

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)
  • Gears, Cams (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

Die vorliegende Erfindung betrifft eine Oberflächenverdichtung eines Werkstücks mit zumindest einer Verzahnung aus Sintermaterial, wobei eine erste Oberfläche des Werkstücks mit einem anderen Verfahren verdichtet ist als eine zweite Oberfläche des Werkstücks.
PCT/EP2006/005476 2005-06-10 2006-06-08 Werkstück mit unterschiedlicher beschaffenheit WO2006131356A2 (de)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP06761986A EP1888278B9 (de) 2005-06-10 2006-06-08 Verfahren zum verdichten einer verzahnung mit unterschiedlichen verfahren
ES06761986T ES2379640T3 (es) 2005-06-10 2006-06-08 Procedimiento para compactar un dentado con procedimientos diferentes
CA002611669A CA2611669A1 (en) 2005-06-10 2006-06-08 Work piece having different qualities
CN200680020667.1A CN101466489B (zh) 2005-06-10 2006-06-08 具有不同特性的工件
AT06761986T ATE541659T1 (de) 2005-06-10 2006-06-08 Verfahren zum verdichten einer verzahnung mit unterschiedlichen verfahren
US11/953,475 US20080201951A1 (en) 2005-06-10 2007-12-10 Work Piece Having Different Qualities
US13/422,370 US20120227530A1 (en) 2005-06-10 2012-03-16 Work Piece Having Different Qualities

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005027054.9 2005-06-10
DE102005027054A DE102005027054A1 (de) 2005-06-10 2005-06-10 Werkstück mit unterschiedlicher Beschaffenheit

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US11/953,475 Continuation US20080201951A1 (en) 2005-06-10 2007-12-10 Work Piece Having Different Qualities

Publications (2)

Publication Number Publication Date
WO2006131356A2 WO2006131356A2 (de) 2006-12-14
WO2006131356A3 true WO2006131356A3 (de) 2009-02-05

Family

ID=37216053

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/005476 WO2006131356A2 (de) 2005-06-10 2006-06-08 Werkstück mit unterschiedlicher beschaffenheit

Country Status (8)

Country Link
US (2) US20080201951A1 (de)
EP (1) EP1888278B9 (de)
CN (1) CN101466489B (de)
AT (1) ATE541659T1 (de)
CA (1) CA2611669A1 (de)
DE (1) DE102005027054A1 (de)
ES (1) ES2379640T3 (de)
WO (1) WO2006131356A2 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT505118B1 (de) 2007-03-28 2013-03-15 Miba Sinter Austria Gmbh Verfahren zur bearbeitung einer verzahnung an einem sinterteil
DE102010039491A1 (de) 2010-08-18 2012-02-23 Deckel Maho Pfronten Gmbh Verfahren und Vorrichtung zum Erzeugen von Steuerdaten zur Ausbildung einer Zahnflanke durch fräsende Bearbeitung eines Werkstücks an einer Werkzeugmaschine
DE102010039490A1 (de) * 2010-08-18 2012-02-23 Deckel Maho Pfronten Gmbh Verfahren und Vorrichtung zum Erzeugen von Steuerdaten zur Ausbildung eines Zahns einer Stirnradverzahnung durch fräsende Bearbeitung eines Werkstücks an einer Werkzeugmaschine
DE102012214870A1 (de) * 2012-08-22 2014-02-27 Schaeffler Technologies AG & Co. KG Antriebsrad und Verfahren zu seiner Herstellung
CN104438993B (zh) * 2014-10-22 2016-04-06 山东大学 一种改善齿形突耳缺陷的齿轮滚轧成形方法
CN105234496A (zh) * 2015-10-27 2016-01-13 江苏科技大学 一种共轭齿轮或转子的加工方法
EP3398710A4 (de) * 2015-12-31 2019-07-24 Kwang Hui Lee Verfahren zur herstellung eines getriebes und damit hergestelltes getriebe
CN107019253B (zh) * 2016-02-01 2018-06-05 叶正瑜 一种简易乳垫、及该简易乳垫的制造设备和制造方法
US20170266726A1 (en) * 2016-03-17 2017-09-21 GM Global Technology Operations LLC Method and system for surface densification
DE102019126669A1 (de) * 2019-10-02 2021-04-08 Profilator Gmbh & Co. Kg Verfahren und Vorrichtung zum Glätten der Zahnflanken der Zähne verzahnter Werkstücke
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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2250227A (en) * 1990-10-08 1992-06-03 Formflo Ltd Surface hardening gear wheels
WO1999022890A1 (de) * 1997-10-30 1999-05-14 Miba Sintermetall Aktiengesellschaft Verfahren und vorrichtung zum herstellen eines zahnrades
US20040177719A1 (en) * 2003-10-03 2004-09-16 Kosco John C. Powder metal materials and parts and methods of making the same
US20050244295A1 (en) * 2004-04-21 2005-11-03 Paul Skoglund Sintered metal parts and method for the manufacturing thereof

Family Cites Families (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2461734A (en) * 1945-06-19 1949-02-15 R K Leblond Machine Tool Co Flame hardening apparatus
US2542912A (en) * 1945-12-08 1951-02-20 Ford Motor Co Process and apparatus for coining sintered articles
US2561579A (en) * 1947-10-02 1951-07-24 Gen Motors Corp Impregnated ferrous gear
US3037400A (en) * 1959-01-14 1962-06-05 Edward V Sundt Differential gear reducer
US3043164A (en) * 1959-05-11 1962-07-10 Edward V Sundt Differential gear reducer
US3851512A (en) * 1973-03-08 1974-12-03 G Zhuravlev Method of and device for gear teeth hardening
US4059879A (en) 1975-11-17 1977-11-29 Textron Inc. Method for the controlled mechanical working of sintered porous powder metal shapes to effect surface and subsurface densification
DE3325037C1 (de) 1983-07-11 1984-07-12 Sintermetallwerk Krebsöge GmbH, 5608 Radevormwald Mit wenigstens einer Verzahnung versehener Sintermetallkoerper
US4708912A (en) * 1984-07-18 1987-11-24 Sintermetallwerk Krebsoege Gmgh Sintered metal body with at least one toothing
US4666665A (en) * 1986-01-30 1987-05-19 Federal-Mogul Corporation Hot-forging small inner diameter powdered metal parts
GB2197605B (en) * 1986-12-30 1990-06-20 Honda Motor Co Ltd Forming cup-shaped products having internal gears
US5711187A (en) 1990-10-08 1998-01-27 Formflo Ltd. Gear wheels rolled from powder metal blanks and method of manufacture
JPH05117703A (ja) * 1991-09-05 1993-05-14 Kawasaki Steel Corp 粉末冶金用鉄基粉末組成物およびその製造方法ならびに鉄系焼結材料の製造方法
US5903815A (en) 1992-02-12 1999-05-11 Icm/Krebsoge Composite powdered metal component
DE4211319C2 (de) * 1992-04-04 1995-06-08 Plansee Metallwerk Verfahren zur Herstellung von Sintereisen-Formteilen mit porenfreier Zone
CA2104605C (en) * 1992-09-09 2000-05-02 Peter Jones Powder metal alloy process
DE69314438T2 (de) 1992-11-30 1998-05-14 Sumitomo Electric Industries Niedrig legierter Sinterstahl und Verfahren zu dessen Herstellung
ES2149195T3 (es) * 1992-12-21 2000-11-01 Stackpole Ltd Metodo y tratamiento para producir articulos sinterizados y productos de los mismos.
US5308556A (en) * 1993-02-23 1994-05-03 Corning Incorporated Method of making extrusion dies from powders
US5286323A (en) * 1993-02-23 1994-02-15 Corning Incorporated Dome shaped extrusion dies
US5659955A (en) * 1994-01-21 1997-08-26 Plamper; Gerhard Method of making powder metal helical gears
US5613180A (en) * 1994-09-30 1997-03-18 Keystone Investment Corporation High density ferrous power metal alloy
US5754937A (en) 1996-05-15 1998-05-19 Stackpole Limited Hi-density forming process
US5729822A (en) 1996-05-24 1998-03-17 Stackpole Limited Gears
US6013225A (en) * 1996-10-15 2000-01-11 Zenith Sintered Products, Inc. Surface densification of machine components made by powder metallurgy
US6110419A (en) * 1997-12-02 2000-08-29 Stackpole Limited Point contact densification
US5972132A (en) * 1998-02-11 1999-10-26 Zenith Sintered Products, Inc. Progressive densification of powder metallurgy circular surfaces
US6416262B1 (en) * 1998-04-01 2002-07-09 Mitsubishi Heavy Industries, Ltd. Gear shaping method and device and spiral bevel gear cutter
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
US6017489A (en) * 1999-02-17 2000-01-25 Federal-Mogul World Wide, Inc. Method of densifying powder metal preforms
US6168754B1 (en) * 1999-02-17 2001-01-02 Federal-Mogul World Wide, Inc. Method and apparatus for densifying powder metal preforms
US6170156B1 (en) * 1999-03-24 2001-01-09 General Motors Corporation Gear tooth smoothing and shaping process
EP1045410B1 (de) * 1999-04-16 2007-01-24 Matsushita Electric Industrial Co., Ltd. Anodische Elektrode für Elektrolytkondensator und Verfahren zu ihrer Herstellung
US6779270B2 (en) * 1999-07-13 2004-08-24 The Penn States Research Foundation Full form roll finishing technique
GB2360825B (en) 2000-03-30 2004-11-17 Formflo Ltd Gear wheels roll formed from powder metal blanks
US6514307B2 (en) * 2000-08-31 2003-02-04 Kawasaki Steel Corporation Iron-based sintered powder metal body, manufacturing method thereof and manufacturing method of iron-based sintered component with high strength and high density
AT409466B (de) * 2000-11-30 2002-08-26 Miba Sintermetall Ag Verfahren und vorrichtung zum herstellen eines zahnrades
US6630101B2 (en) * 2001-08-16 2003-10-07 Keystone Investment Corporation Method for producing powder metal gears
US6517772B1 (en) * 2001-09-26 2003-02-11 Federal-Mogul World Wide, Inc. Apparatus and method for forming powder metal gears
AT5886U1 (de) * 2002-03-27 2003-01-27 Plansee Ag Gesinterte schalt- oder schiebemuffe
US7574947B2 (en) * 2002-05-29 2009-08-18 Massachusetts Institute Of Technology Rotary fast tool servo system and methods
FR2840552B1 (fr) * 2002-06-06 2005-02-18 Escofier Tech Sa Formage a froid par roulage de pieces en materiau presse-fritte
GB2393187B (en) * 2002-09-18 2006-06-07 Smith International Method of manufacturing a cutting element from a partially densified substrate
US7160351B2 (en) * 2002-10-01 2007-01-09 Pmg Ohio Corp. Powder metal clutch races for one-way clutches and method of manufacture
JP2005344126A (ja) * 2002-10-04 2005-12-15 Hitachi Powdered Metals Co Ltd 焼結歯車
DE10247330B4 (de) * 2002-10-10 2013-02-28 PMG Füssen GmbH Pulvermetallurgisch hergestellte Schaltmuffe
JP4376503B2 (ja) * 2002-10-25 2009-12-02 ボルグワーナー・モールステック・ジャパン株式会社 サイレントチェーン用スプロケットおよびその製造方法
US6899846B2 (en) * 2003-01-14 2005-05-31 Sinterstahl Corp.-Powertrain Method of producing surface densified metal articles
CN1791687A (zh) * 2003-03-18 2006-06-21 宾夕法尼亚州研究基金会 通过奥氏体形变进行粉末金属齿轮强化的方法和设备
JP4570066B2 (ja) * 2003-07-22 2010-10-27 日産自動車株式会社 サイレントチェーン用焼結スプロケットの製造方法
US7025928B2 (en) * 2003-07-24 2006-04-11 The Gates Corporation Method of flow forming a metal part
DE10342495B4 (de) * 2003-09-12 2017-02-02 Reishauer Ag Verfahren und Vorrichtung zum Einzentrieren von vorverzahnten Werkstücken auf Verzahnungsfeinbearbeitungsmaschinen
US7025929B2 (en) * 2004-04-08 2006-04-11 Pmg Ohio Corp. Method and apparatus for densifying powder metal gears

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2250227A (en) * 1990-10-08 1992-06-03 Formflo Ltd Surface hardening gear wheels
WO1999022890A1 (de) * 1997-10-30 1999-05-14 Miba Sintermetall Aktiengesellschaft Verfahren und vorrichtung zum herstellen eines zahnrades
US20040177719A1 (en) * 2003-10-03 2004-09-16 Kosco John C. Powder metal materials and parts and methods of making the same
US20050244295A1 (en) * 2004-04-21 2005-11-03 Paul Skoglund Sintered metal parts and method for the manufacturing thereof

Also Published As

Publication number Publication date
EP1888278B1 (de) 2012-01-18
EP1888278A2 (de) 2008-02-20
US20120227530A1 (en) 2012-09-13
ES2379640T3 (es) 2012-04-30
EP1888278B9 (de) 2012-08-08
CN101466489A (zh) 2009-06-24
DE102005027054A1 (de) 2006-12-28
ATE541659T1 (de) 2012-02-15
US20080201951A1 (en) 2008-08-28
WO2006131356A2 (de) 2006-12-14
CA2611669A1 (en) 2006-12-14
CN101466489B (zh) 2014-06-18

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