EP2083956A1 - Procede de fabrication d'une roue multiple metallique en une seule piece, ebauche pour la fabrication de celle-ci et roue multiple - Google Patents

Procede de fabrication d'une roue multiple metallique en une seule piece, ebauche pour la fabrication de celle-ci et roue multiple

Info

Publication number
EP2083956A1
EP2083956A1 EP07815156A EP07815156A EP2083956A1 EP 2083956 A1 EP2083956 A1 EP 2083956A1 EP 07815156 A EP07815156 A EP 07815156A EP 07815156 A EP07815156 A EP 07815156A EP 2083956 A1 EP2083956 A1 EP 2083956A1
Authority
EP
European Patent Office
Prior art keywords
contour
wheel
toothed
tooth
chain
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.)
Granted
Application number
EP07815156A
Other languages
German (de)
English (en)
Other versions
EP2083956B1 (fr
Inventor
Herbert Schmid
Wolfgang Siessl
Karl Dickinger
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 Sinter Austria GmbH
Original Assignee
Miba Sinter Austria 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 Sinter Austria GmbH filed Critical Miba Sinter Austria GmbH
Publication of EP2083956A1 publication Critical patent/EP2083956A1/fr
Application granted granted Critical
Publication of EP2083956B1 publication Critical patent/EP2083956B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • B21H5/022—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
    • 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
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12229—Intermediate article [e.g., blank, etc.]
    • 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
    • Y10T74/19949—Teeth
    • Y10T74/19963—Spur

Definitions

  • the invention relates to a method for producing a one-piece, metal multi-wheel for a traction drive, with at least two single wheels arranged side by side, each having a wheel body with an outer circumference, wherein distributed over the outer circumference teeth are arranged for engagement of the traction means, and wherein at least one of the at least two wheels is designed as a chain, toothed or toothed belt wheel, and a preform for producing the one-piece, metallic Mehrfachrades and a one-piece, metallic Mehrfachrad.
  • DE 102 16 524 A discloses a chain drive with two drive chains arranged side by side and over multiple sprockets.
  • Such multiple sprockets are either formed in several pieces, wherein a plurality of single sprockets are connected to each other, but also in one piece, wherein a wheel body has a plurality of single gears with corresponding teeth on the outer circumference.
  • the tooth geometry is determined both in the one-piece and in the multi-piece variant in the manufacturing process. It is therefore necessary to keep suitable molds and tools for each multi-sprocket with the particular tooth geometry.
  • Object objective invention is to provide a way to make the production of multiple wheels for a traction drive variable.
  • the respective desired wheel for example gear wheel, sprocket or toothed belt wheel
  • the respective desired wheel can be produced from a preform depending on intended traction means, so that it is possible to prefabricate corresponding preforms independently of the final tooth geometry, thereby responding more quickly to customer demand can, in which only the appropriate deformation in the final tooth geometry is required. It is thus possible to produce these preforms in stock, so that production bottlenecks can be compensated for by corresponding pre-production in times of lower capacity utilization.
  • the invention is thus to be seen in the fact that either the finished tooth contour of the chain or gear or the finished tooth contour of a toothed belt wheel is produced from the raw contours.
  • the non-cutting shaping in particular the rolling, is also achieved that the material waste in comparison to previous manufacturing processes in which the tooth geometry has been made from the original mold, can be significantly reduced.
  • the tooth height can be reduced before the forming, so that the variability of the tooth contour to be determined can be increased. It can thus be better responded to different diameters of single wheels.
  • the rough contour of the teeth is formed at least approximately involute-like, whereby the non-cutting deformation, ie the material displacement, can be facilitated. It can thus be achieved with a lesser degree of wear of the forming tools or forming machines.
  • the preform may further consist of a sintered metal or a sintered metal alloy. It is advantageous, since such components have a more or less high porosity after the sintering, that the deformation can be facilitated in which the porosity is lowered at least in the outer region, that is, the component is compressed in these areas. Due to the higher density in the outer area of the component can also achieve a better wear resistance. In addition, a smoothing of the surface or a better surface quality is thus achieved, for example, the teeth have no transverse grooves, as they normally arise during the compression of a sintered metal powder due to the process.
  • Fig. 1 shows an embodiment of the preform as a double wheel in an oblique view
  • FIG. 2 shows the preform according to FIG. 1 in an end view
  • Fig. 4 shows a further embodiment variant of the tooth transformation.
  • FIGS. 1 and 2 show a preform 1 for producing a multiple wheel 2 for a traction mechanism drive.
  • traction drives are, for example, chain drives or belt drives (belt drive).
  • the multiple wheel 2 produced from the preform 1 according to FIG. 1 has two single wheels 3, 4.
  • Each of these single wheels 3, 4 comprises a wheel body 5, 6 with an outer circumference 7, 8 over which distributed teeth 9, 10 are arranged for engagement of the traction means.
  • the two single wheels 3, 4 a different diameter 11, 12 ( Figure 2).
  • the two single wheels 3, 4 have the same diameter 11, 12.
  • the multiple wheel 2 not only has two single wheels 3, 4 but that more than two, for example. 3, 4, 5, etc. multiple wheels 3, 4 are arranged. Also, there is the possibility that these single wheels 3, 4 have a different diameter or all single wheels 3, 4 have the same diameter, or more than two.
  • the multi-wheel 2 has two three single wheels 3, 4 with decreasing diameter 11, 12, wherein the teeth 9 of the single wheel 3 with the largest diameter 11 and the optional subsequent single wheel are formed for a chain drive and the smallest single wheel 4 for the engagement of a toothed belt is formed.
  • the multiple wheel 2 has a central bore 13 for receiving a shaft or the like.
  • the multi-wheel 2 or the preform 1 of a Formed sintered metal or a sintered metal alloy may be formed, for example, on an aluminum, iron, copper, magnesium base. Examples of such sintered metal alloys can be found in DIN V 30 910 Part 4, page 3.
  • the production of sintered components comprises the process steps mixing the powder, optionally with additives and auxiliaries, powder compaction into a green compact, sintering of the green compact, optionally calibration and / or densification of the sintered structural part.
  • FIG. 3 shows a first embodiment variant for the forming and final production of the tooth contour for the multiple wheel 2.
  • tooth contour 14 is called a contour for a toothed belt, hereinafter toothed belt wheel contour 15, as a contour for a toothed chain, hereinafter referred to as sprocket contour 16 (dashed line) and shown as a rough contour 17 (dash-dotted line).
  • the rough contour 17 is preferably produced as a rough contour 17 for the production of teeth 10 for engagement of a toothed chain. In particular, this is the rough contour 17 after sintering of the respective preform 1.
  • the rough contour 17 of the tooth 10 in the region of a tooth flank 18 is thicker than a tooth flank thickness 19 of the finished tooth 10 for the engagement of a toothed chain.
  • a non-cutting deformation wherein the material from the region of the excess of the tooth flank 18 in a tooth tip region 20 is at least partially spent.
  • compression in the circumferential area of the tooth 10 of the sintered material can take place during this deformation.
  • toothed belt wheel contour 15 In order to produce a tooth 10 for engagement of a toothed belt (toothed belt wheel contour 15) from this rough contour 17, the deformation is designed such that at least part of the excess material of the rough contour 17 is again moved in the area of the tooth flank 18 in the direction of the tooth head area 20, However - after the teeth 10 for the engagement of a toothed belt in principle look different from the teeth 10 for engagement of a toothed chain - in this deformation of the tooth head area 20 subsequent tooth flank area 21 is widened compared to the raw contour 17 and possibly also from material In the tooth neck region, the toothed belt wheel contour 15 can overlap with the rough contour 17 of the tooth 10.
  • Figure 3 is intended to represent only the representation of the principle of producing the multiple wheel 2 from the preform 1 ( Figure 1).
  • the rough contour 17 is formed in the variant of Figure 3 approximately involute, whereby the advantage is achieved that sufficient material for the deformation and / or compression is available, from which, as needed, a tooth 10 for a silent chain or a To manufacture toothed belts.
  • the maximum extent of the excess width in the region of the tooth flank 18 can have a value (left or right oversize, respectively)
  • the tooth 15. is selected from a range with an upper limit of a maximum of 25%, based on the tooth flank thickness 19 of the sprocket contour 16 of the tooth 10. This upper limit is to be understood that the excess over the height of the tooth flank 18 is variable and to can direct the respective desired tooth geometry.
  • the oversize for relatively slender, small teeth 10 is different than for thicker, larger teeth 10. Comparing O over the entire tooth geometry of the finished tooth 10, the excess can range from -25% to + 25%, especially -20%. to + 20%, as indicated by Fig. 3 can be seen.
  • the preform 1 is symmetrical with respect to the tooth geometry 5, there is also the possibility that the extent of the oversize of the rough contour 17 with respect to the sprocket contour 16 on the left tooth flank is different from the right flank.
  • the single wheel 3 is formed in this variant as a sprocket, but can also be a tooth 0 rad.
  • This single wheel preferably already has its final shape prior to forming the teeth 10 of the second single wheel 4.
  • FIG. 4 shows a variant embodiment of the invention in which the tooth 10 of FIG Toothed belt wheel contour 15 (full lines) compared to the tooth 10 of the sprocket contour 16 (dashed lines) has a significantly lower tooth height 22.
  • the tooth 10 of the toothed belt wheel contour 15 may have a tooth height 22 that is half the tooth height 22 of the sprocket contour 16
  • a portion of the tooth 10 in the tooth head region 20 is removed by machining, since such a large tooth Reduction can not be accomplished by forming alone.
  • the removal of the material of the tooth 10 follows, for example. By turning up to a tooth height 24 of the rough contour 17 (dash-dotted lines).
  • the tooth 10 of the toothed belt wheel contour 15 produced by the deformation has a greater tooth height 22 than the tooth height 24 of the rough contour 17 after the forming in comparison to the embodiment of FIG. 3, ie more material is removed than would be required solely on the basis of the tooth height. This ensures that the material can be moved from the tooth flank region 18 in the region of the tooth head by the deformation.
  • the deformation itself is plastic, in particular by rolling.
  • the forming itself can be carried out both as hot forming and as cold forming.
  • preforms 2 from which, as required, a multiple wheel 1 with at least one toothed, toothed belt or sprocket is produced, the latter being produced from the preform 2 by non-cutting shaping.

Landscapes

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

Abstract

L'invention concerne un procédé de fabrication d'une roue multiple métallique (2) en une seule pièce pour l'entraînement d'un moyen de traction, comportant au moins deux roues simples (3, 4) disposées l'une à côté de l'autre qui présentent chacune un corps de roue (5, 6) avec un périmètre extérieur (7, 8), sachant que des dents (9, 10) sont disposées sur le périmètre extérieur (7, 8) en y étant réparties, afin d'engager le moyen de traction, et sachant qu'au moins une des au moins deux roues simples (3, 4) est réalisée sous forme de roue à chaîne, de roue dentée ou de roue à courroie dentée. La roue à chaîne, la roue dentée ou la roue à courroie dentée est fabriquée avec un contour brut, sachant qu'une épaisseur de dent du contour brut est, en vue axiale, supérieure à l'épaisseur de dent du contour final de la roue à chaîne, roue dentée ou roue à courroie dentée achevée; ce contour brut est ensuite façonné pour former le contour de dent achevé par façonnage sans enlèvement de matière, notamment par laminage, en fonction du moyen de traction utilisé, sachant qu'on réalise un contour de roue à courroie dentée à partir d'un contour de roue à chaîne ou d'un contour de roue dentée, ou un contour de roue à chaîne à partir d'un contour de roue dentée ou d'un contour de roue à courroie dentée, ou un contour de roue dentée à partir d'une roue à courroie dentée ou d'une roue à chaîne. L'invention concerne aussi une ébauche pour la fabrication d'une roue multiple, et une roue multiple.
EP07815156A 2006-10-24 2007-10-22 Procede de fabrication d'une roue multiple metallique en une seule piece et roue multiple Active EP2083956B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0177906A AT505150B1 (de) 2006-10-24 2006-10-24 Mehrfachrad
PCT/AT2007/000489 WO2008049145A1 (fr) 2006-10-24 2007-10-22 PROCÉDÉ DE FABRICATION D'UNE ROUE MULTIPLE MÉTALLIQUE EN UNE SEULE PIèCE, ÉBAUCHE POUR LA FABRICATION DE CELLE-CI ET ROUE MULTIPLE

Publications (2)

Publication Number Publication Date
EP2083956A1 true EP2083956A1 (fr) 2009-08-05
EP2083956B1 EP2083956B1 (fr) 2011-04-20

Family

ID=39106281

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07815156A Active EP2083956B1 (fr) 2006-10-24 2007-10-22 Procede de fabrication d'une roue multiple metallique en une seule piece et roue multiple

Country Status (9)

Country Link
US (1) US8911313B2 (fr)
EP (1) EP2083956B1 (fr)
JP (1) JP5363326B2 (fr)
CN (1) CN101547758B (fr)
AT (2) AT505150B1 (fr)
CA (1) CA2667339A1 (fr)
DE (1) DE502007007017D1 (fr)
ES (1) ES2364861T3 (fr)
WO (1) WO2008049145A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5688983B2 (ja) * 2011-01-28 2015-03-25 アイダエンジニアリング株式会社 サーボプレスシステム
US20160236750A1 (en) * 2015-02-13 2016-08-18 Shimano Inc. Bicycle drive system
AT520531B1 (de) * 2018-04-24 2019-05-15 Miba Sinter Austria Gmbh Zahnrad
CN114653941B (zh) * 2022-03-29 2022-12-02 西北有色金属研究院 一种镍钛合金齿轮的粉末冶金制备方法

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Also Published As

Publication number Publication date
CN101547758B (zh) 2012-10-03
CA2667339A1 (fr) 2008-05-02
EP2083956B1 (fr) 2011-04-20
CN101547758A (zh) 2009-09-30
WO2008049145A1 (fr) 2008-05-02
AT505150A4 (de) 2008-11-15
JP5363326B2 (ja) 2013-12-11
ES2364861T3 (es) 2011-09-15
US20100279807A1 (en) 2010-11-04
ATE506127T1 (de) 2011-05-15
DE502007007017D1 (de) 2011-06-01
AT505150B1 (de) 2008-11-15
JP2010507482A (ja) 2010-03-11
US8911313B2 (en) 2014-12-16

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