WO2007128013A1 - Verfahren zum herstellen eines zahnrades - Google Patents
Verfahren zum herstellen eines zahnrades Download PDFInfo
- Publication number
- WO2007128013A1 WO2007128013A1 PCT/AT2007/000198 AT2007000198W WO2007128013A1 WO 2007128013 A1 WO2007128013 A1 WO 2007128013A1 AT 2007000198 W AT2007000198 W AT 2007000198W WO 2007128013 A1 WO2007128013 A1 WO 2007128013A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- metal blank
- powder metal
- profile
- profile rollers
- rollers
- Prior art date
Links
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 relates to a method for producing a toothed wheel from a powder metal blank pressed and sintered with an oversize in the toothed area, wherein the powder metal blank is deformed in the area of the oversize by a pusher tool forming a toothing of the powder metal blank An oversize is compressed, and to an apparatus for performing the method.
- the compaction of the surface layer in the engagement region of the toothed wheel takes place via a pusher tool in the form of at least one toothed wheel, which has either an external toothing (EP 0 552 B1) or an internal toothing (AT 406 836 B) engaging with the toothing of the powder metal blank, with the aid of which the sliding speed between the tooth flanks of the powder metal blank and the pusher tool can be reduced.
- a pusher tool engaging in the toothing of the powder metal blank screw whose axis transverse to Axis of the powder metal blank runs.
- 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 profile rollers can be unrolled with a predeterminable slip on the powder metal blank.
- the flow of the material during the plastic deformation can be supported at least locally by the sliding friction occurring during a slip between the profile rollers and the workpiece.
- a 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 a in the toothing of the powder metal blank - A -
- 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 To press teeth axially through the cross-section enclosed by the profile roller ring and thereby to compress the teeth of the powder metal blank in the range of the allowance.
- 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. If, however, the cage is displaced axially 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 region 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.
- FIG. 1 shows a device according to the invention for producing a gear in a simplified axial section
- Fig. 2 shows this device fragmentary in a section along the line H-II of FIG. 1 on a larger scale and the
- FIG. 3 and 4 the device in a representation corresponding to FIG. 1, but in different working positions and on a smaller scale.
- 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, which cause the compression of the teeth of the powder metal blank 1 in the range of their allowance when rolling on the powder metal blank 1.
- 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.
- the profile rollers 8 With a displacement of the profile rollers 8 along the profile grooves 9 of the support body 10, the profile rollers 8 remain in a common diameter plane, the profile rollers 8 are guided in a cage 11, in the embodiment in a simple manner from two into the annular gap between the support body 10 and the Holder 3 for the powder metal blank 1 engaging punches 12 and 13 is formed, but this is of course not mandatory.
- the profile rollers 8 have conical surfaces 14 on their front sides. Since the profile rollers 8 are supported against one another along these end-side conical surfaces 14, they result in the region of Tooth heads of the powder metal blank 1 advantageous support conditions that exclude an overload of the profile rollers 8 in this area.
- the powder metal blank 1 according to FIG. 1 is placed aligned with the holder 3 on a support portion 4 aligned before the holder 3 is closed and lifted off with the portion 5 of the holder 3 punch 13 of Cage 11 is lowered against the rim of the profile rollers 8.
- the holder 3 with the powder metal blank 1 is now to be displaced axially relative to the supporting body 10 in order to unroll the profile rollers 8 on the teeth of the powder metal blank 1 while compacting the tooth surfaces by the respective allowance.
- the support body 10 and the mandrel 2 remain stationary while the holder 3 is acted upon axially.
- the profile rollers 8 roll thereby in the profile grooves 9 of the support body 10 and in the profile grooves 6 of the holder 3 and on the profile grooves 6 continuing tooth surfaces of the powder metal blank 1 from.
- the position of the pusher tool 7 is shown immediately before and after the compression of the teeth of the powder metal blank 1.
- the cage 11 formed by the punches 12 and 13 is moved with the profiled rollers 8 in the direction of the mandrel axis, so that a substantially slip-free rolling movement of the profile rollers 8 is ensured on the powder metal blank 1.
- the rolling movement of the profile rollers 8 can be superimposed on a sliding movement. This superposition requires an additional sliding friction in the area of the powder metal blank 1, with the aid of which influence can be exerted on the compaction process.
- the cage 11 may consist of a profile rollers 8 receiving frame.
- the pitch of the profile rollers may differ from the tooth pitch, for example, because a profile roller for two teeth is used or for the tooth spaces and the tooth heads separate profile rollers are used.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Powder Metallurgy (AREA)
- Gears, Cams (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002651016A CA2651016A1 (en) | 2006-05-04 | 2007-04-27 | Method for producing a gear wheel |
CN2007800251347A CN101489701B (zh) | 2006-05-04 | 2007-04-27 | 生产齿轮的方法 |
EP07718414.1A EP2012951B1 (de) | 2006-05-04 | 2007-04-27 | Verfahren zum herstellen eines zahnrades |
US12/226,966 US8069696B2 (en) | 2006-05-04 | 2007-04-27 | Method for producing a gear wheel |
JP2009512362A JP2009536268A (ja) | 2006-05-04 | 2007-04-27 | 歯車を製造する方法 |
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 |
ATA763/2006 | 2006-05-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007128013A1 true WO2007128013A1 (de) | 2007-11-15 |
Family
ID=38198965
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AT2007/000198 WO2007128013A1 (de) | 2006-05-04 | 2007-04-27 | Verfahren zum herstellen eines zahnrades |
Country Status (7)
Country | Link |
---|---|
US (1) | US8069696B2 (de) |
EP (1) | EP2012951B1 (de) |
JP (1) | JP2009536268A (de) |
CN (1) | CN101489701B (de) |
AT (1) | AT503037B1 (de) |
CA (1) | CA2651016A1 (de) |
WO (1) | WO2007128013A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017137258A1 (de) * | 2016-02-11 | 2017-08-17 | Ecoroll Ag Werkzeugtechnik | Walzvorrichtung zum walzen von werkstücken mit verzahnung und zugehöriges verfahren |
US11707786B2 (en) | 2020-04-17 | 2023-07-25 | PMG Indiana LLC | Apparatus and method for internal surface densification of powder metal articles |
Families Citing this family (6)
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 |
EP3082428A4 (de) | 2013-12-09 | 2017-08-02 | Respira Therapeutics, Inc. | Pde5-inhibitorpulverformulierungen und zugehörige verfahren |
DE102014002219B4 (de) * | 2014-02-21 | 2015-12-10 | Gkn Sinter Metals Engineering Gmbh | Verfahren und Vorrichtung zur Herstellung eines Zahnrades nebst Spannmittel |
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 |
Citations (5)
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 |
DE19531907A1 (de) * | 1995-08-30 | 1997-03-06 | Schuler Pressen Gmbh & Co | Vorrichtung und Verfahren zur Herstellung von Profilkörpern |
US5865055A (en) * | 1996-04-15 | 1999-02-02 | Mitsubishi Steel Mfg. Co., Ltd. | Spline forming die |
US20050226759A1 (en) * | 2004-04-08 | 2005-10-13 | Trasorras Juan R | 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 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2250227B (en) | 1990-10-08 | 1994-06-08 | Formflo Ltd | Gear wheels rolled from powder metal blanks |
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 |
AT412955B (de) | 2003-12-19 | 2005-09-26 | Miba Sinter Austria Gmbh | Verfahren zum herstellen eines zahnrades |
-
2006
- 2006-05-04 AT AT0076306A patent/AT503037B1/de not_active IP Right Cessation
-
2007
- 2007-04-27 JP JP2009512362A patent/JP2009536268A/ja active Pending
- 2007-04-27 WO PCT/AT2007/000198 patent/WO2007128013A1/de active Application Filing
- 2007-04-27 CN CN2007800251347A patent/CN101489701B/zh not_active Expired - Fee Related
- 2007-04-27 EP EP07718414.1A patent/EP2012951B1/de not_active Not-in-force
- 2007-04-27 US US12/226,966 patent/US8069696B2/en not_active Expired - Fee Related
- 2007-04-27 CA CA002651016A patent/CA2651016A1/en not_active Abandoned
Patent Citations (5)
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 |
DE19531907A1 (de) * | 1995-08-30 | 1997-03-06 | Schuler Pressen Gmbh & Co | Vorrichtung und Verfahren zur Herstellung von Profilkörpern |
US5865055A (en) * | 1996-04-15 | 1999-02-02 | Mitsubishi Steel Mfg. Co., Ltd. | Spline forming die |
US20050226759A1 (en) * | 2004-04-08 | 2005-10-13 | Trasorras Juan R | 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 |
Non-Patent Citations (1)
Title |
---|
DATABASE WPI Week 200663, Derwent World Patents Index; AN 2006-610667, XP002447606 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017137258A1 (de) * | 2016-02-11 | 2017-08-17 | Ecoroll Ag Werkzeugtechnik | Walzvorrichtung zum walzen von werkstücken mit verzahnung und zugehöriges verfahren |
US11638981B2 (en) | 2016-02-11 | 2023-05-02 | Ecoroll Ag Werkzeugtechnik | Rolling device for rolling work pieces having a toothing, and associated method |
US11707786B2 (en) | 2020-04-17 | 2023-07-25 | PMG Indiana LLC | Apparatus and method for internal surface densification of powder metal articles |
Also Published As
Publication number | Publication date |
---|---|
US8069696B2 (en) | 2011-12-06 |
CA2651016A1 (en) | 2007-11-15 |
AT503037A4 (de) | 2007-07-15 |
CN101489701B (zh) | 2010-12-08 |
US20090090154A1 (en) | 2009-04-09 |
EP2012951A1 (de) | 2009-01-14 |
JP2009536268A (ja) | 2009-10-08 |
CN101489701A (zh) | 2009-07-22 |
EP2012951B1 (de) | 2017-10-18 |
AT503037B1 (de) | 2007-07-15 |
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