EP1027179B1 - Verfahren und vorrichtung zum herstellen eines zahnrades - Google Patents

Verfahren und vorrichtung zum herstellen eines zahnrades Download PDF

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Publication number
EP1027179B1
EP1027179B1 EP98949823A EP98949823A EP1027179B1 EP 1027179 B1 EP1027179 B1 EP 1027179B1 EP 98949823 A EP98949823 A EP 98949823A EP 98949823 A EP98949823 A EP 98949823A EP 1027179 B1 EP1027179 B1 EP 1027179B1
Authority
EP
European Patent Office
Prior art keywords
powder metal
metal blank
toothing
tool
presser tool
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.)
Expired - Lifetime
Application number
EP98949823A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1027179A1 (de
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 Sintermetall 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 EP1027179A1 publication Critical patent/EP1027179A1/de
Application granted granted Critical
Publication of EP1027179B1 publication Critical patent/EP1027179B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B22F2998/00—Supplementary information concerning processes or compositions relating to 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

Definitions

  • the invention relates to a method for producing a gear from a pressed and sintered with an allowance in the tooth area Powder metal blank, in the area of the oversize by pressing a counter toothing which engages in the toothing of the powder metal blank at least one rotating press tool around the allowance is compacted under plastic deformation (see e.g. EP-A-0 552 272), and on a device to carry out the procedure.
  • the compaction of the surface layer in the meshing area of the gearwheel is done using a pusher tool in the form of at least one gear, the one in the toothing of the Powder metal blank engaging external teeth. Because the powered Gear wheel of the pressing tool against the pressing device Powder metal blank is pressed, the teeth of the powder metal blank over the counter-toothing of the trigger tool in the engagement area in several Revolutions compacted until the target contour of the toothing of the sintered Gear is reached. Due to the kinematic conditions occur at the Rolling motion between the teeth of the powder metal blank and the Counter toothing of the trigger tool along the line of engagement outside of the pitch point sliding speeds between the flanks of each other intermeshing teeth of the powder metal blank and the trigger tool.
  • the invention is therefore based on the object of a method of the beginning described with simple means to improve the teeth of the Powder metal blanks can be sufficiently compressed in the engagement area without impairing the compacted surface, especially in the area of the tooth heads or the tooth feet.
  • the invention solves this problem in that the internal teeth trained counter-toothing of the powder metal blank, annular pusher tool with the help of on the outer circumference of the pusher tool Rolling pressure roller in the toothing of the powder metal blank is pressed.
  • the invention takes advantage of the fact that with an internal toothing the sliding speeds occurring during tooth meshing between the Tooth flanks of the powder metal blank and the trigger tool clearly turn out less than when meshing between two spur gears.
  • the one for that The required pressing force is applied by a pressure roller rolls on the outer circumference of the trigger tool, so that the compression in The area of intervention can again take place in several rounds when the compaction in one round is not sufficient.
  • the possible compression of the teeth of the powder metal blank in the area of planned allowance depends on the respective material hardening, the a cold deformation of the powder metal blank during a Compress previous calibration process or during compaction of the tooth surfaces even in the area of the allowance.
  • the powder metal blank before compression or subjected to heat treatment between two compression processes to the deformation resistance for subsequent compression decrease accordingly.
  • the trigger tool 3 consists of an internal ring gear 7 which has a counter toothing 8 for the toothing 9 of the powder metal blank 1 forms.
  • the pressure roller 4 of the pressing tool 5 rolls on the outer circumference 10 of the internal ring gear 7, the teeth the counter-toothing 8 in the tooth spaces of the toothing 9 of the powder metal blank 1 are pressed.
  • the teeth 9 of the powder metal blank 1 with a Counter toothing 8 cooperates in the form of an internal toothing, can the sliding speeds between the flanks and counter flanks of the intermeshing teeth 8, 9 in the area of the line of engagement outside of the pitch point are limited to a dimension that Material flaking in the area of the compressed tooth surfaces of the powder metal blank 1 is excluded, especially because of the concave flanks of the Counter toothing 8 of the trigger tool 3 in comparison to an external toothing as a counter-toothing more favorable conditions with regard to the pressure load the teeth 9 of the powder metal blank 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Powder Metallurgy (AREA)
  • Gears, Cams (AREA)
  • Gear Transmission (AREA)
  • Heat Treatment Of Articles (AREA)
EP98949823A 1997-10-30 1998-10-27 Verfahren und vorrichtung zum herstellen eines zahnrades Expired - Lifetime EP1027179B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT0183697A AT406836B (de) 1997-10-30 1997-10-30 Verfahren und vorrichtung zum herstellen eines zahnrades
AT183697 1997-10-30
PCT/AT1998/000260 WO1999022890A1 (de) 1997-10-30 1998-10-27 Verfahren und vorrichtung zum herstellen eines zahnrades

Publications (2)

Publication Number Publication Date
EP1027179A1 EP1027179A1 (de) 2000-08-16
EP1027179B1 true EP1027179B1 (de) 2002-12-18

Family

ID=3522068

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98949823A Expired - Lifetime EP1027179B1 (de) 1997-10-30 1998-10-27 Verfahren und vorrichtung zum herstellen eines zahnrades

Country Status (10)

Country Link
US (1) US6357272B1 (pt)
EP (1) EP1027179B1 (pt)
JP (1) JP3831896B2 (pt)
AT (2) AT406836B (pt)
AU (1) AU9615898A (pt)
BR (1) BR9813890A (pt)
CA (1) CA2307562C (pt)
CZ (1) CZ299187B6 (pt)
DE (1) DE59806760D1 (pt)
WO (1) WO1999022890A1 (pt)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3546002B2 (ja) * 2000-08-29 2004-07-21 株式会社日立ユニシアオートモティブ バルブタイミング制御装置の製造方法
DE10250432B4 (de) 2002-10-30 2015-01-22 PMG Füssen GmbH Verfahren zum mechanischen Ausformen von Hinterlegungen an Sinterformteilen auf Eisenbasis
AT412955B (de) * 2003-12-19 2005-09-26 Miba Sinter Austria Gmbh Verfahren zum herstellen eines zahnrades
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
DE102005027049A1 (de) * 2005-06-10 2006-12-14 Gkn Sinter Metals Gmbh Belastbare Verzahnung
DE102005027144A1 (de) * 2005-06-10 2006-12-14 Gkn Sinter Metals Gmbh Oberflächenverdichtung einer Verzahnung
DE102005027137A1 (de) * 2005-06-10 2006-12-14 Gkn Sinter Metals Gmbh Verzahnung aus Sintermaterial
AT503037B1 (de) 2006-05-04 2007-07-15 Miba Sinter Austria Gmbh Verfahren zum herstellen eines zahnrades
US7832070B2 (en) * 2006-08-03 2010-11-16 Gm Global Technology Operations, Inc. Apparatus and method for strengthening gear teeth
JP4606395B2 (ja) * 2006-09-11 2011-01-05 ジヤトコ株式会社 冷間板金成形装置
JP2008068285A (ja) * 2006-09-14 2008-03-27 Nissan Motor Co Ltd 微細凹部加工装置及び微細凹部加工方法
US20080282544A1 (en) * 2007-05-11 2008-11-20 Roger Lawcock Powder metal internal gear rolling process
GB0921896D0 (en) * 2009-12-16 2010-01-27 Rolls Royce Plc A method of manufacturing a component

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1881382A (en) * 1929-02-11 1932-10-04 Wildhaber Ernest Method of and means for perfecting gears and gear shaped articles
DE1155080B (de) * 1957-05-31 1963-10-03 Kellermann Fa Rudolf Walzwerkzeug zum Herstellen der Verzahnung an einem Schneckenrad
USRE26914E (en) * 1963-09-16 1970-06-23 Apparatus for producing gear teeth or the like
DE1552190A1 (de) * 1966-01-03 1971-02-18 Rotary Profile Anstalt Verfahren und Vorrichtung zur Herstellung von Gegenstaenden durch Rollen
GB1210411A (en) * 1967-01-26 1970-10-28 Nat Res Dev Improvements in or relating to forming of workpieces
DD103015A1 (pt) * 1972-03-07 1974-01-05
US3872701A (en) * 1973-10-09 1975-03-25 Lear Siegler Inc Method for roll finishing spur gears
GB2050908B (en) * 1979-06-01 1983-09-14 Rostov G Universit Method of and device for hardening machine elements having projections
US4414780A (en) * 1981-08-21 1983-11-15 Jorgensen Arne R Gear burnishing and honing machine
SU1174140A1 (ru) * 1983-04-06 1985-08-23 Ростовский-на-Дону научно-исследовательский институт технологии машиностроения Устройство дл накатки зубчатых колес
EP0463200A1 (de) * 1990-06-25 1992-01-02 Leifeld GmbH & Co. Vorrichtung zur Erzeugung von eingeformten Konturierungen auf dem Aussenumfang von rotationssymmetrischen Werkstucken aus Blech sowie Verfahren zum Betreiben der Vorrichtung
GB2250227B (en) 1990-10-08 1994-06-08 Formflo Ltd Gear wheels rolled from powder metal blanks
US5711187A (en) * 1990-10-08 1998-01-27 Formflo Ltd. Gear wheels rolled from powder metal blanks and method of manufacture
JPH05161935A (ja) * 1991-12-11 1993-06-29 Tannami Kogyo Kk 金属ドラム容器の天板素材のネジ加工用ローリング装置
DE4317306C2 (de) * 1993-05-26 1994-12-08 Kapp Werkzeugmasch Verfahren zur Feinbearbeitung der Zahnflanken von Zahnrädern
DE19625285A1 (de) * 1996-06-25 1998-01-02 Kapp Werkzeugmasch Verfahren und Vorrichtung für die Feinbearbeitung der Zahnflanken eines Zahnrades auf einer Werkzeugmaschine

Also Published As

Publication number Publication date
BR9813890A (pt) 2000-09-26
AT406836B (de) 2000-09-25
JP3831896B2 (ja) 2006-10-11
CZ20001591A3 (cs) 2001-07-11
CZ299187B6 (cs) 2008-05-14
ATA183697A (de) 2000-02-15
CA2307562C (en) 2008-01-22
AU9615898A (en) 1999-05-24
CA2307562A1 (en) 1999-05-14
ATE229856T1 (de) 2003-01-15
US6357272B1 (en) 2002-03-19
WO1999022890A1 (de) 1999-05-14
JP2001521824A (ja) 2001-11-13
DE59806760D1 (de) 2003-01-30
EP1027179A1 (de) 2000-08-16

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