[go: up one dir, main page]

EP0305388A1 - Procede de fabrication de pignons pour chaines multiples - Google Patents

Procede de fabrication de pignons pour chaines multiples

Info

Publication number
EP0305388A1
EP0305388A1 EP87903220A EP87903220A EP0305388A1 EP 0305388 A1 EP0305388 A1 EP 0305388A1 EP 87903220 A EP87903220 A EP 87903220A EP 87903220 A EP87903220 A EP 87903220A EP 0305388 A1 EP0305388 A1 EP 0305388A1
Authority
EP
European Patent Office
Prior art keywords
sprocket
hub
rings
chain
chain sprocket
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.)
Withdrawn
Application number
EP87903220A
Other languages
German (de)
English (en)
Other versions
EP0305388A4 (fr
Inventor
Norman James Turney
Alan Ridsdale
David Ian Servent
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.)
NILSEN SINTERED PRODUCTS (AUSTRALIA) Pty Ltd
Original Assignee
NILSEN SINTERED PRODUCTS (AUSTRALIA) Pty Ltd
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 NILSEN SINTERED PRODUCTS (AUSTRALIA) Pty Ltd filed Critical NILSEN SINTERED PRODUCTS (AUSTRALIA) Pty Ltd
Publication of EP0305388A4 publication Critical patent/EP0305388A4/fr
Publication of EP0305388A1 publication Critical patent/EP0305388A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/30—Chain-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
    • 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
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
    • B22F7/062—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts

Definitions

  • This invention concerns multi-chain sprockets. More particularly, it concerns a method of making multi-chain sprockets using moulded components which are bonded together to form the multi-chain sprocket,.
  • the conventional method of manufacturing multi-chain " sprockets involves fully machining the sprockets from metal bar stock, or partially machining a blank formed by a pressure moulding process.
  • a method of manufacturing a multi-chain sprocket comprising the steps of:
  • step (d) The bonding is preferably effected by sintering the components so that there is a diffusion of the elements in the sprocket rings into the hub material and vice versa.
  • the metal or metal alloy powder from .which the multi-chain sprocket is formed may be any suitable metal or metal alloy powder.
  • the hub is pressure moulded from a copper-iron powder and the sprocket rings are formed from a powder of a nickel alloy steel.
  • the multi-chain sprocket will normally be hardened - by known techniques - or steam treated to increase the density and wear resistance of the sprocket rings.
  • the final step in its manufacture will usually be a finish grinding of the bore of the hub and the location face.
  • the present invention also encompasses a multi-chain sprocket manufactured by the technique outlined above.
  • Figure 1 is an exploded perspective sketch of the moulded components of a multi-chain sprocket having two rings of sprocket teeth.
  • Figure 2 is a transverse sectional view of a 3-piece multi-chain sprocket constructed in accordance with the present invention.
  • Figures 3, 4, 5 and 6 are transverse sectional views of alternative multi-chain sprocket constructions.
  • a multi-chain sprocket consists of a hub member 10 on to which a plurality of sprocket "rings" 11 are mounted.
  • Two sprocket rings are included in the multi-chain sprockets illustrated in Figures 1, 2 and 4, but any required number of sprocket rings can be mounted on a single hub 10.
  • Three sprocket rings 11, for example, are shown in the construction illustrated in Figure 3.
  • At least one locking key 14 (and usually three keys 14, as shown in Figure 1) is formed on the hub and a corresponding locking key receiving groove 15 (or grooves 15) is (or are) formed on the internal surface of the sprocket rings.
  • sprocket rings of different internal diameter can be mounted on a single hub if, as shown in Figures 5 and 6, the hub 50 is moulded to have a stepped region 52 onto which a sprocket ring 51 is mounted.
  • the individual components of the multi-chain sprocket are pressure moulded from metallic powders. Standard powder moulding techniques are used for this purpose.
  • the internal diameter d (see Figure 1) of the sprocket rings 11 must be substantially the same as the external diameter p_ of the hub 10, but such that the sprocket rings are a precise fit on the hub, so that when the preferred sinter bonding of the components is effected after the multi-chain sprocket has been assembled, there is a migration of molecules from the ring to the hub and vice versa to perform the bonding. Subsequently the bonded multi-chain sprocket will usually be hardened (using conventional hardening practice) or steam treated and the bore of the hub 10 and the end faces of the sprocket will be finish ground.
  • the main benefits of the present invention are reduced production costs for multi-chain sprockets and the ability to produce a multi-chain sprocket having individual sprocket rings with differing diameters and timing characteristics.
  • the reduced production costs are achieved by avoiding the machining steps in the conventional production of multi-chain sprockets, and by using less raw material to produce the sprockets.
  • Multi-chain sprockets manufactured by the method of the present invention may be used in any situation where a multi-chain sprocket is required. Examples of such situations are in motor vehicle engines and in the wheel hubs of multi-speed bicycles.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Gears, Cams (AREA)

Abstract

On fabrique un pignon pour chaînes multiples en moulant un moyeu central (10) à partir d'une poudre de métal ou d'un alliage de métal et en moulant plusieurs bagues de pignons (11) à partir d'une poudre de métal identique ou différent ou d'un alliage de métal. Les bagues de pignons moulées (11) sont montées sur le moyeu (10) aux emplacements requis, puis les bagues sont agglomérées au moyeu (de préférence par frittage). Le pignon pour chaînes multiples produit est généralement durci ou traité à la vapeur, avant que l'alésage du moyeu et la surface de contact du pignon soient finis à la meule.
EP87903220A 1986-05-16 1987-05-18 Procede de fabrication de pignons pour chaines multiples Withdrawn EP0305388A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU5934/86 1986-05-16
AUPH593486 1986-05-16

Publications (2)

Publication Number Publication Date
EP0305388A4 EP0305388A4 (fr) 1989-02-23
EP0305388A1 true EP0305388A1 (fr) 1989-03-08

Family

ID=3771618

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87903220A Withdrawn EP0305388A1 (fr) 1986-05-16 1987-05-18 Procede de fabrication de pignons pour chaines multiples

Country Status (4)

Country Link
EP (1) EP0305388A1 (fr)
KR (1) KR880701149A (fr)
DK (1) DK11088D0 (fr)
WO (1) WO1987006863A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3908989A1 (de) * 1989-03-18 1990-09-20 Sinterstahl Gmbh Verfahren zur herstellung einer schalt- oder schiebemuffe fuer kfz-getriebe
SE9001409D0 (sv) * 1990-04-20 1990-04-20 Sandvik Ab Metod foer framstaellning av haardmetallkropp foer bergborrverktyg och slitdelar
US5293847A (en) * 1993-02-16 1994-03-15 Hoffman Ronald J Powdered metal camshaft assembly
US5980406A (en) * 1996-08-14 1999-11-09 Borg-Warner Automotive, Inc. Sprocket assembly for a phased chain system
AT1770U1 (de) * 1996-12-04 1997-11-25 Miba Sintermetall Ag Verfahren zum herstellen eines sinterformkörpers, insbesondere eines zahnriemen- oder kettenrades
JP3859046B2 (ja) * 1998-12-29 2006-12-20 スズキ株式会社 内燃機関のオイル通路
JP3477406B2 (ja) * 1999-10-05 2003-12-10 株式会社日立ユニシアオートモティブ 内燃機関のバルブタイミング変更装置
US7241416B2 (en) * 2003-08-12 2007-07-10 Borg Warner Inc. Metal injection molded turbine rotor and metal injection molded shaft connection attachment thereto
DE102006057471A1 (de) * 2006-12-06 2008-06-12 Schaeffler Kg Schiebemuffe einer Synchronisiereinheit
DE102008017046B4 (de) * 2008-04-03 2021-04-22 Iwis Motorsysteme Gmbh & Co. Kg Mehrteiliges Antriebsrad für einen Zugmitteltrieb
CN102909534B (zh) * 2012-08-31 2016-01-20 贵州群建精密机械有限公司 一种电动轮椅车齿轮的加工方法
DE102012219949A1 (de) * 2012-10-31 2014-04-30 Schaeffler Technologies Gmbh & Co. Kg Rotor eines Nockenwellenverstellers, Nockenwellenversteller mit einem solchen Rotor und Verfahren zum Herstellen eines Rotors
JP6550706B2 (ja) * 2014-09-29 2019-07-31 日立化成株式会社 複合焼結機械部品の製造方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2331909A (en) * 1940-12-04 1943-10-19 Mallory & Co Inc P R Gear and the like
GB1042239A (en) * 1965-08-06 1966-09-14 Axel Wickman Transmissions Ltd Improvements in or relating to a flanged coupling and a method of manufacturing the same
US3842646A (en) * 1973-04-20 1974-10-22 Gleason Works Process and apparatus for densifying powder metal compact to form a gear having a hub portion,and preferred powder metal compact shape for use therewith
GB8409771D0 (en) * 1984-04-14 1984-05-23 Ae Plc Manufacture of camshafts

Also Published As

Publication number Publication date
DK11088A (da) 1988-01-12
EP0305388A4 (fr) 1989-02-23
KR880701149A (ko) 1988-07-25
DK11088D0 (da) 1988-01-12
WO1987006863A1 (fr) 1987-11-19

Similar Documents

Publication Publication Date Title
EP0305388A1 (fr) Procede de fabrication de pignons pour chaines multiples
JP3309344B2 (ja) センタ穴付き歯車の製造方法
US4813823A (en) Drilling tool formed of a core-and-casing assembly
EP0595061A1 (fr) Matrice d'extrusion et insert de matrice pour celle-ci
JP2005535844A (ja) ヘリングボーンギヤ歯及びその製造方法
US8540861B2 (en) Method for producing gear wheels
US5044224A (en) Camshaft
US5461776A (en) Method of manufacturing piston rings
AU584811B2 (en) Method of making multi-chain sprockets
US4677870A (en) Forged spur gear with web connected teeth
US5233738A (en) Tool for fine machining
US3935937A (en) Plastic and metal article of manufacture
JP2000312940A (ja) ギア部品及びその成形方法
JPH04322915A (ja) ギヤシャフトの製造方法
KR101449270B1 (ko) 헬리컬 기어 후가공 공정을 포함하는 헬리컬 기어 제조방법
JPH0459980B2 (fr)
US4998955A (en) Assembled camshaft
US5251682A (en) Cast disk and method of manufacturing the same
JP3127587B2 (ja) 分割金型の製造方法
JP2510764B2 (ja) 超硬合金製ダイスの製造法
JPH01503074A (ja) マルチ‐チェーンスプロケットの製造方法
JP4203222B2 (ja) 鍛造成形用金型およびその製造方法
JPH0315609A (ja) 組立カムシャフトの製造方法
JPS62168627A (ja) 歯車軸の製造方法
JPS63101034A (ja) 溝付プ−リの製造方法

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: 19881110

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT SE

A4 Supplementary search report drawn up and despatched

Effective date: 19890223

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

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19890616

R18W Application withdrawn (corrected)

Effective date: 19890616

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SERVENT, DAVID, IAN

Inventor name: TURNEY, NORMAN, JAMES

Inventor name: RIDSDALE, ALAN