EP2046530B1 - Housing for a roller-burnishing tool having an adjustable width - Google Patents

Housing for a roller-burnishing tool having an adjustable width Download PDF

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Publication number
EP2046530B1
EP2046530B1 EP07823523A EP07823523A EP2046530B1 EP 2046530 B1 EP2046530 B1 EP 2046530B1 EP 07823523 A EP07823523 A EP 07823523A EP 07823523 A EP07823523 A EP 07823523A EP 2046530 B1 EP2046530 B1 EP 2046530B1
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EP
European Patent Office
Prior art keywords
housing
parts
casing
spacer
crankshaft
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.)
Not-in-force
Application number
EP07823523A
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German (de)
French (fr)
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EP2046530A1 (en
Inventor
Lucia Garcia Aranda
Gilles Yvenat
Nicolas Massue
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Renault SAS
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Renault SAS
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Filing date
Publication date
Application filed by Renault SAS filed Critical Renault SAS
Priority to PL07823523T priority Critical patent/PL2046530T3/en
Publication of EP2046530A1 publication Critical patent/EP2046530A1/en
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Publication of EP2046530B1 publication Critical patent/EP2046530B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B39/00—Burnishing machines or devices, i.e. requiring pressure members for compacting the surface zone; Accessories therefor
    • B24B39/04—Burnishing machines or devices, i.e. requiring pressure members for compacting the surface zone; Accessories therefor designed for working external surfaces of revolution
    • B24B39/045—Burnishing machines or devices, i.e. requiring pressure members for compacting the surface zone; Accessories therefor designed for working external surfaces of revolution the working tool being composed of a plurality of working rolls or balls

Definitions

  • the present invention generally relates to roller burnishing machines, in particular those used for the work hardening of the crankshafts of internal combustion engines.
  • crankshaft is a mechanical part intended to be constantly in motion when the engine is running, which is why it is dimensioned so as to be robust but also the lightest and least bulky possible.
  • crankshaft is one of the parts of the most mechanically stressed engine.
  • crankshaft is subjected to torsion and bending forces as well as significant vibrations.
  • it must withstand many cycles of engine operation.
  • crankshafts are made in one piece by forging or molding and then they undergo machining operations, including work hardening by rolling, intended to change the structure of the material that compose them to make them more resistant.
  • the burnishing operation consists in imposing a permanent deformation on the surface of the material to improve its resistance to fatigue.
  • crank pins and trunnions consists in reinforcing the connection grooves between the arms and the crankshaft bearing surfaces (called crank pins and trunnions).
  • Known rolling machines have two rollers spaced apart from each other, and generally also inclined relative to each other, which each roll in a groove of the crankshaft exerting on the latter a large mechanical force which leads the hardening of this area.
  • one of these roller burners has an action tool with a two-part housing.
  • the two parts of the case fit into each other and enclose internally a wheel guiding the rollers.
  • the spacing between these two parts is fixed.
  • the guide wheel has a width that depends on the width of the crankshaft bearing to be rolled. This geometry indeed determines the spacing between the two rollers.
  • a housing can correspond to only one type of guide wheel.
  • the housing of the roller burnishing tool then adapts to a particular width of crankshaft bearings.
  • the present invention provides a roller action tool housing for adjusting the relative position of the two rollers to adapt their spacing to the geometry of the bearing of the crankshaft to be rolled.
  • a rolling action tool housing which comprises two parts separated from each other by means of adjustable spacing means.
  • the adjustable spacing means allow, before rolling a series of identical crankshafts, to separate the desired length of the two parts of the housing, in order to move the two rollers away or closer together. one compared to the other. Consequently, once this length is adjusted to the geometry of the crankshaft reach, the two rollers can each roll simultaneously on two of the leaves of the crankshaft to harden them. It is then possible to use different series of crankshafts to use the same housing by proceeding, each time beforehand, to the adjustment of the spacing of the two parts of the housing as a function of the distance separating the leaves of the crankshafts from the crankshaft. concerned series.
  • the spacer means comprise a spacer on which the two parts of the housing rest.
  • the spacer is interchangeable, and the two parts of the housing are spaced apart by a given distance which is a function of the width of the spacer.
  • a recess for receiving said spacer is formed on each of the two parts of the housing.
  • the two parts of the housing being coaxial with each other, the two rollers, each integral with one of the two parts of the housing, are precisely aligned relative to each other, without being offset. .
  • said recesses are formed on the edge of the housing.
  • the spacer is easily accessible so that it can be quickly replaced by another spacer.
  • a pair of burnishing tools 1 which comprises an upper tool, commonly called action tool 100, and a lower tool, commonly called reaction tool 10.
  • This pair of rolling tools 1 is adapted to work hard a crankshaft 50 disposed between these two tools.
  • the crankshaft 50 comprises along its length a series of pairs of arms 51 extending orthogonally to its axis W. As shown in FIG. figure 2 the pairs of arms 51 make it possible to connect bearing surfaces 52, 53 to each other (called journals 53 and crank pins 52).
  • the journals 53 are cylindrical and have an axis coincident with the axis W of the crankshaft.
  • the crank pins 52 are cylindrical and have an axis parallel and offset from the axis W of the crankshaft 50.
  • each bearing 52, 53 has a cylindrical surface around an axis parallel to the axis W of the crankshaft.
  • the lateral faces facing the arms 51 connected to the corresponding crank pin 52 and trunnion 53 are planar and extend orthogonally to the axis W of the crankshaft 50.
  • the annular zones of connection between the cylindrical surface of the 52, 53 and the flat surfaces of the side faces of the arms 51 form grooves 54 to work hard.
  • the reaction tool 10 of the rolling machine 1 which is not strictly speaking the object of the present invention, is intended to support the crankshaft 50 to be machined. It includes conventionally a housing 11 of generally parallelepiped shape with four side walls, including two front walls of axis normal to the axis W, which border a rectangular bottom wall. It is open on the front face and its two end walls each have a deep notch 12, generally triangular in shape, which accommodates the corresponding span 52, 53 of the crankshaft 50.
  • said bearing surfaces 52, 53 of the crankshaft 50 are, when in the notch 12, more particularly held by two reaction wheels 13 carried by two shafts 14 which are housed inside the housing 11 and which extend between its two front walls.
  • the reaction wheels 13 are pivotally mounted on the shafts 14 by means of needle bearings 15.
  • the action tool 100 comprises a parallelepipedal housing 101 separated longitudinally into two parts 110, 120 which are spaced apart from each other. These two parts 110, 120 each have a front wall 111, 121 which is disposed orthogonal to the axis W of the crankshaft 50 and which is lined with returns 112, 122 extending orthogonally to said front wall.
  • the two end walls 111, 121 are positioned facing each other so that their respective returns 112, 122 face each other and together form the edge of the housing 101 of the action tool 100.
  • each portion 110, 120 of the housing 101 is interrupted on a central portion of its length so that the edge of the housing 101 has an opening 106 disposed above the bearing 52, 53 of the crankshaft 50 to be rolled.
  • the housing 101 is more particularly positioned relative to the crankshaft 50 so that its lower returns extend in length orthogonal to the axis W of the crankshaft.
  • the end walls 111, 121 of the two parts 110, 120 of the housing 101 each have a circular opening 113, 123 central in which is slipped an axis 180.
  • a needle bushing 105 is mounted on the axis 180 in the housing 101.
  • each return 112, 122 has in recess a recess extending to the free edge of said return. Put together end to end, these recesses form around each part 110, 120 of the housing 101 a recess 115, 125. These two recesses 115, 125 are arranged opposite one another and form a common recess 102, rectangular section, along the edge of the housing 101.
  • the recesses extend on the inner face of each return, so that the common recess is disposed within the housing.
  • the two parts 110, 120 of the housing 101 are kept at a distance from each other by means of adjustable spacing means 130.
  • These spacing means here consist of a spacer 130 in U against which bear the two parts 110, 120 of the housing 101.
  • this spacer 130 is adapted to fit into the common recess 102, on three of its sides (the upper side and the two lateral sides).
  • Its width is designed to separate the two parts 110, 120 of the housing 101 by a determined distance d.
  • the spacer 130 is interchangeable.
  • the two parts of the housing can be moved apart by the desired distance. It is also understood that depending on the width of the spacer 130, the length of the axis 180 varies. The coaxiality of each of the two parts 110, 120 of the housing 101 is achieved by means of the spacer 130.
  • the free edges of the returns 112 of the first part 110 of the housing 101 can bear pads 116 which are adapted to engage in corresponding bores made in the spacer 130 and in the returns 122 of the second portion 120 of the housing 101 (see figure 1 ).
  • the action tool 100 further comprises means for fixing the two parts of the housing 101 between them and the spacer 130 in the common recess 102.
  • These fixing means comprise fixing screws 103 whose heads bear against the front wall 111 of the first part 110 of the housing, at different points distributed around its periphery, and whose threaded bodies are engaged in coaxial bores 117, 127 , 137 made in the returns 112, 122 of the two parts of the housing 101 and in the spacer 130.
  • the bores 127 of the returns 122 of the second portion 120 of the housing 101 are threaded so as to cooperate with the threaded bodies of these screws 103 (see figures 1 and 2 ).
  • the housing 101 of the action tool 100 having an inner housing 104 in which are mounted the work hardening means of the crankshaft 50, the end walls 111, 121 of the housing 101 are each pierced by three orifices 118 of arcuate oblong shapes. which extend around the corresponding circular opening 113, 123 of said wall and which are provided to allow the passage of lubricant in said inner housing 104 of the housing 101.
  • the shaft 180 forms a shaft on which is engaged a cylindrical rolling wheel 140.
  • This roller wheel 140 is pivotally connected to the axis 180 by means of the needle bearing 105 interposed therebetween.
  • the thickness of the roller wheel 140 and the width of the needle bearing 105 are intended to be less than the distance separating the inner faces of the two end walls 111, 121 of the housing 101 (this distance is of course a function of the width of the the spacer 130).
  • the roller wheel 140 can thus freely rotate around the ring 114, while being maintained in translation on this ring by the inner faces of the end walls of the two parts of the housing 101. It is then understood that the change of the roller wheel 140 also forced to change the spacer 130, the axis 180 and the corresponding needle bearing 105.
  • the roller wheel 140 has, at mid-height of its outer cylindrical face, a central rib 141 of rectangular section which extends over its entire periphery.
  • the lateral faces of this central rib 141 are connected to the outer cylindrical face of the roller wheel 140 by rounded leaves 142.
  • the action tool 100 further comprises two rollers 150 which are each arranged on one of the parts 110, 120 of the housing 101 and which are held by roller cages 161, 170 ad hoc well known to the man of the job.
  • Each roller 150 has a disc shape of small thickness.
  • Each roller 150 is disposed below the opening 106, so as to be in contact, on one side, with one of the rounded leaves 142 of the roller wheel 140, and, on the other, with one of the grooves 54 of the crankshaft 50.
  • the rollers can thus exert a significant burnishing force on the grooves 54 of the crankshaft 50 to work harden.
  • Each roller cage 161, 170 comprises attachment means 170 to a portion 110, 120 of the roller housing and housing means 161 for the roller 150.
  • These housing means in particular allow the roller 150 to be held in position while the pair of rolling tools 1 is at rest and let it rotate to roll on the grooves of the crankshaft.

Abstract

The housing (101) with a roller-burnishing tool (100) having an adjustable width useful in crankshaft (50) rolling machine, comprises two parts separated at a distance from each other using an adjustable spacing unit, a centering unit, joggles for obtaining the spacer on two parts, and a fixing unit. The adjustable spacing unit comprises an interchangeable spacer against which a support captivates the parts of the housing. Each part of the housing comprises an interior side, where an interior of the housing is connected to a rolling wheel. The housing (101) with a roller-burnishing tool (100) having an adjustable width useful in crankshaft (50) rolling machine, comprises two parts separated at a distance from each other using an adjustable spacing unit, a centering unit, joggles for obtaining the spacer on two parts, and a fixing unit. The adjustable spacing unit comprises an interchangeable spacer against which a support captivates the parts of the housing. Each part of the housing comprises an interior side, where an interior of the housing is connected to a rolling wheel. The joggles are formed on interior side of the each part. The centering unit comprises a multi-point, which is projected on the two parts of the housing. The fixing unit comprises a fixing screw whose head support captivates the parts of the housing and body is connected through the bore. The body of the fixing screw is screwed in threaded bores.

Description

Domaine technique auquel se rapporte l'inventionTechnical field to which the invention relates

La présente invention concerne de manière générale les machines de galetage, notamment celles utilisées pour l'écrouissage des vilebrequins de moteurs à combustion interne.The present invention generally relates to roller burnishing machines, in particular those used for the work hardening of the crankshafts of internal combustion engines.

Elle concerne plus particulièrement un boîtier d'outil d'action de machine de galetage, tel que décrit dans le document US 2005/0188735 .More particularly, it relates to a rolling machine action tool housing, as described in the document US 2005/0188735 .

Arrière-plan technologiqueTechnological background

Le vilebrequin est une pièce mécanique destinée à être constamment en mouvement lorsque le moteur est en marche, c'est la raison pour laquelle il est dimensionné de manière à être robuste mais aussi le plus léger et le moins encombrant possible.The crankshaft is a mechanical part intended to be constantly in motion when the engine is running, which is why it is dimensioned so as to be robust but also the lightest and least bulky possible.

En particulier, c'est l'une des pièces du moteur la plus fortement sollicitée mécaniquement. En effet, le vilebrequin est soumis à des efforts de torsion et de flexion ainsi qu'à d'importantes vibrations. En outre, il doit résister à de très nombreux cycles de fonctionnement du moteur.In particular, it is one of the parts of the most mechanically stressed engine. Indeed, the crankshaft is subjected to torsion and bending forces as well as significant vibrations. In addition, it must withstand many cycles of engine operation.

Généralement, les vilebrequins sont réalisés d'une seule pièce par forgeage ou moulage puis ils subissent des opérations d'usinage, notamment d'écrouissage par galetage, destinés à modifier la structure du matériau qui les composent pour les rendre plus résistants.Generally, the crankshafts are made in one piece by forging or molding and then they undergo machining operations, including work hardening by rolling, intended to change the structure of the material that compose them to make them more resistant.

L'opération de galetage consiste à imposer une déformation permanente à la surface du matériau pour améliorer sa tenue à la fatigue.The burnishing operation consists in imposing a permanent deformation on the surface of the material to improve its resistance to fatigue.

Plus particulièrement, elle consiste à renforcer les gorges de raccordement entre les bras et les portées du vilebrequin (appelées manetons et tourillons).More particularly, it consists in reinforcing the connection grooves between the arms and the crankshaft bearing surfaces (called crank pins and trunnions).

Les machines de galetage connues comportent deux galets écartés l'un de l'autre, et généralement aussi inclinés l'un par rapport à l'autre, qui roulent chacun dans une gorge du vilebrequin en exerçant sur cette dernière un grand effort mécanique qui conduit à l'écrouissage de cette zone.Known rolling machines have two rollers spaced apart from each other, and generally also inclined relative to each other, which each roll in a groove of the crankshaft exerting on the latter a large mechanical force which leads the hardening of this area.

Le document US 2005/0188735 présente par exemple l'une de ces machines de galetage qui comporte un outil d'action muni d'un boîtier en deux parties. Les deux parties du boîtier s'emboîtent l'une dans l'autre et renferment intérieurement une roue de guidage des galets. L'écartement entre ces deux parties est donc fixe. La roue de guidage a une largeur qui dépend de la largeur de la portée du vilebrequin à galeter. Cette géométrie détermine en effet l'écartement entre les deux galets. L'écartement entre les deux parties du boîtier étant fixe, à un boîtier ne peut correspondre qu'un seul type de roue de guidage. Le boîtier de l'outil de galetage ne s'adapte alors qu'à une largeur particulière de portées du vilebrequin.The document US 2005/0188735 For example, one of these roller burners has an action tool with a two-part housing. The two parts of the case fit into each other and enclose internally a wheel guiding the rollers. The spacing between these two parts is fixed. The guide wheel has a width that depends on the width of the crankshaft bearing to be rolled. This geometry indeed determines the spacing between the two rollers. As the spacing between the two parts of the housing is fixed, a housing can correspond to only one type of guide wheel. The housing of the roller burnishing tool then adapts to a particular width of crankshaft bearings.

Objet de l'inventionObject of the invention

Par rapport à l'état de la technique, la présente invention propose un boîtier d'outil d'action de galetage permettant d'ajuster la position relative des deux galets pour adapter leur écartement à la géométrie de la portée du vilebrequin à galeter.Compared to the state of the art, the present invention provides a roller action tool housing for adjusting the relative position of the two rollers to adapt their spacing to the geometry of the bearing of the crankshaft to be rolled.

Plus particulièrement, on propose selon l'invention un boîtier d'outil d'action de galetage qui comporte deux parties séparées l'une de l'autre à l'aide de moyens d'écartement réglables.More particularly, it is proposed according to the invention a rolling action tool housing which comprises two parts separated from each other by means of adjustable spacing means.

Ainsi, grâce à l'invention, les moyens d'écartement réglables permettent, avant de galeter une série de vilebrequins identiques, d'écarter de la longueur voulue les deux parties du boîtier, afin d'éloigner ou de rapprocher les deux galets l'un par rapport à l'autre. Par conséquent, une fois cette longueur réglée à la géométrie de la portée du vilebrequin, les deux galets peuvent chacun rouler simultanément sur deux des congés du vilebrequin pour les écrouir. Il est alors possible, pour galeter différentes séries de vilebrequins, d'utiliser le même boîtier en procédant, à chaque fois au préalable, au réglage de l'écartement des deux parties du boîtier en fonction de la distance séparant les congés des vilebrequins de la série concernée.Thus, thanks to the invention, the adjustable spacing means allow, before rolling a series of identical crankshafts, to separate the desired length of the two parts of the housing, in order to move the two rollers away or closer together. one compared to the other. Consequently, once this length is adjusted to the geometry of the crankshaft reach, the two rollers can each roll simultaneously on two of the leaves of the crankshaft to harden them. It is then possible to use different series of crankshafts to use the same housing by proceeding, each time beforehand, to the adjustment of the spacing of the two parts of the housing as a function of the distance separating the leaves of the crankshafts from the crankshaft. concerned series.

Selon une première caractéristique avantageuse de l'invention, les moyens d'écartement comprennent une entretoise sur laquelle prennent appui les deux parties du boîtier.According to a first advantageous characteristic of the invention, the spacer means comprise a spacer on which the two parts of the housing rest.

Selon une autre caractéristique avantageuse de l'invention, l'entretoise est interchangeable, et les deux parties du boîtier sont écartées d'une distance donnée qui est fonction de la largeur de l'entretoise.According to another advantageous characteristic of the invention, the spacer is interchangeable, and the two parts of the housing are spaced apart by a given distance which is a function of the width of the spacer.

Ainsi, lorsque l'on change de série de vilebrequins à usiner, on conserve le même boîtier d'outil d'action, et l'entretoise est remplacée par une autre entretoise dont la largeur permet d'écarter les deux galets l'un de l'autre de la distance désirée.Thus, when we change the series of crankshafts to be machined, we keep the same action tool housing, and the spacer is replaced by another spacer whose width allows to separate the two rollers one of the other of the desired distance.

Avantageusement, en tant que moyens de centrage des deux parties du boîtier l'une par rapport à l'autre, un embrèvement destiné à accueillir ladite entretoise est réalisée sur chacune des deux parties du boîtier.Advantageously, as centering means of the two parts of the housing relative to each other, a recess for receiving said spacer is formed on each of the two parts of the housing.

Ainsi, les deux parties du boîtier étant coaxiales l'une par rapport à l'autre, les deux galets, chacun solidaires d'une des deux parties du boîtier, sont précisément alignés l'un par rapport à l'autre, sans être décalés.Thus, the two parts of the housing being coaxial with each other, the two rollers, each integral with one of the two parts of the housing, are precisely aligned relative to each other, without being offset. .

Préférentiellement, lesdits embrèvements sont formés sur la tranche du boîtier.Preferably, said recesses are formed on the edge of the housing.

Ainsi, l'entretoise est facilement accessible de sorte qu'elle peut être rapidement remplacée par une autre entretoise.Thus, the spacer is easily accessible so that it can be quickly replaced by another spacer.

D'autres caractéristiques avantageuses et non limitatives de la machine de galetage selon l'invention sont les suivantes :

  • chaque partie du boîtier comportant une face intérieure qui délimite, avec la face intérieure de l'autre partie du boîtier, un logement intérieur accueillant une roue de galetage, les embrèvements sont formés sur lesdites faces intérieures ;
  • les moyens de centrage comportent des plots en saillie de l'une des deux parties du boîtier, et des alésages qui sont réalisés dans l'autre des deux parties du boîtier et qui sont adaptés à accueillir lesdits plots ;
  • le boîtier comporte des moyens de fixation des deux parties du boîtier avec les moyens d'écartement ; et
  • les moyens de fixation comportent des vis de fixation dont les têtes prennent appui sur l'une des deux parties du boîtier, et dont les corps sont engagés au travers d'alésages des moyens d'écartement et sont vissés dans des alésages taraudés de l'autre des deux parties du boîtier.
Other advantageous and non-limiting features of the rolling machine according to the invention are the following:
  • each part of the housing having an inner face which delimits, with the inner face of the other part of the housing, an inner housing accommodating a roller wheel, the recesses are formed on said inner faces;
  • the centering means comprise studs projecting from one of the two parts of the housing, and bores which are made in the other of the two parts of the housing and which are adapted to receive said pads;
  • the housing comprises means for fixing the two parts of the housing with the spacing means; and
  • the fastening means comprise fastening screws whose heads bear against one of the two parts of the casing, and whose bodies are engaged through bores of the spacing means and are screwed into threaded bores of the other of the two parts of the case.

Description détaillée d'un exemple de réalisationDetailed description of an example embodiment

La description qui va suivre en regard des dessins annexés, donnés à titre d'exemples non limitatifs, fera bien comprendre en quoi consiste l'invention et comment elle peut être réalisée.The following description with reference to the accompanying drawings, given as non-limiting examples, will make it clear what the invention consists of and how it can be achieved.

Sur les dessins annexés :

  • la figure 1 est une vue schématique de face d'une machine de galetage selon l'invention ; et
  • la figure 2 est une vue en coupe selon le plan A-A de la figure 1.
In the accompanying drawings:
  • the figure 1 is a schematic front view of a roller burnishing machine according to the invention; and
  • the figure 2 is a sectional view according to the plane AA of the figure 1 .

Par convention, on utilisera les termes « supérieur » et « inférieur » pour désigner des éléments ou des positions orientés respectivement, selon la figure 1, vers le haut et vers le bas.By convention, the terms "upper" and "lower" will be used to designate elements or positions oriented respectively, according to the figure 1 , up and down.

Sur la figure 1, on a représenté un couple d'outils de galetage 1 qui comporte un outil supérieur, communément appelé outil d'action 100, et un outil inférieur, communément appelé outil de réaction 10. Ce couple d'outils de galetage 1 est adaptée à écrouir un vilebrequin 50 disposé entre ces deux outils.On the figure 1 , there is shown a pair of burnishing tools 1 which comprises an upper tool, commonly called action tool 100, and a lower tool, commonly called reaction tool 10. This pair of rolling tools 1 is adapted to work hard a crankshaft 50 disposed between these two tools.

Le vilebrequin 50 comprend sur sa longueur une suite de paires de bras 51 s'étendant orthogonalement à son axe W. Comme le montre la figure 2, les paires de bras 51 permettent de raccorder des portées 52, 53 les unes aux autres (appelées tourillons 53 et manetons 52). Les tourillons 53 sont cylindriques et ont un axe confondu avec l'axe W du vilebrequin. Les manetons 52 sont cylindriques et ont un axe parallèle et décalé par rapport à l'axe W du vilebrequin 50.The crankshaft 50 comprises along its length a series of pairs of arms 51 extending orthogonally to its axis W. As shown in FIG. figure 2 the pairs of arms 51 make it possible to connect bearing surfaces 52, 53 to each other (called journals 53 and crank pins 52). The journals 53 are cylindrical and have an axis coincident with the axis W of the crankshaft. The crank pins 52 are cylindrical and have an axis parallel and offset from the axis W of the crankshaft 50.

Tel que représenté sur la figure 2, chaque portée 52, 53 présente une surface cylindrique autour d'un axe parallèle à l'axe W du vilebrequin. Les faces latérales en vis-à-vis des bras 51 raccordés aux maneton 52 et aux tourillon 53 correspondants sont quant à elles planes et s'étendent orthogonalement à l'axe W du vilebrequin 50. Les zones annulaires de raccordement entre la surface cylindrique des portées 52, 53 et les surfaces planes des faces latérales des bras 51 forment des gorges 54 à écrouir.As shown on the figure 2 each bearing 52, 53 has a cylindrical surface around an axis parallel to the axis W of the crankshaft. The lateral faces facing the arms 51 connected to the corresponding crank pin 52 and trunnion 53 are planar and extend orthogonally to the axis W of the crankshaft 50. The annular zones of connection between the cylindrical surface of the 52, 53 and the flat surfaces of the side faces of the arms 51 form grooves 54 to work hard.

Comme l'illustre la figure 1, l'outil de réaction 10 de la machine de galetage 1, qui ne constitue pas à proprement parler l'objet de la présente invention, est destiné à supporter le vilebrequin 50 à usiner. Il comporte de manière classique un boîtier 11 de forme globalement parallélépipédique avec quatre parois latérales, dont deux parois frontales d'axe normal à l'axe W, qui bordent une paroi de fond rectangulaire. Il est ouvert en face avant et ses deux parois frontales présentent chacune une profonde encoche 12, globalement en forme de triangle, qui accueille la portée 52, 53 correspondante du vilebrequin 50.As illustrated by figure 1 , the reaction tool 10 of the rolling machine 1, which is not strictly speaking the object of the present invention, is intended to support the crankshaft 50 to be machined. It includes conventionally a housing 11 of generally parallelepiped shape with four side walls, including two front walls of axis normal to the axis W, which border a rectangular bottom wall. It is open on the front face and its two end walls each have a deep notch 12, generally triangular in shape, which accommodates the corresponding span 52, 53 of the crankshaft 50.

Comme le montrent les figures 1 et 2, lesdites portées 52, 53 du vilebrequin 50 sont, lorsqu'elles sont dans l'encoche 12, plus particulièrement maintenues par deux roues de réaction 13 portées par deux axes 14 qui sont logés à l'intérieur du boîtier 11 et qui s'étendent entre ses deux parois frontales. Afin de permettre la rotation du vilebrequin 50 autour de son axe W, les roues de réaction 13 sont montées à pivotement sur les arbres 14 au moyen de roulements à aiguilles 15.As shown by figures 1 and 2 , said bearing surfaces 52, 53 of the crankshaft 50 are, when in the notch 12, more particularly held by two reaction wheels 13 carried by two shafts 14 which are housed inside the housing 11 and which extend between its two front walls. In order to allow rotation of the crankshaft 50 about its axis W, the reaction wheels 13 are pivotally mounted on the shafts 14 by means of needle bearings 15.

Comme le montrent les figures 1 et 2, l'outil d'action 100 comporte un boîtier 101 parallélépipédique séparé longitudinalement en deux parties 110, 120 qui sont écartées l'une de l'autre. Ces deux parties 110, 120 présentent chacune une paroi frontale 111, 121 qui est disposée orthogonalement à l'axe W du vilebrequin 50 et qui est bordée de retours 112, 122 s'étendant orthogonalement à ladite paroi frontale. Les deux parois frontales 111, 121 sont positionnées en regard l'une de l'autre de manière que leurs retours 112, 122 respectifs se font face et forment ensemble la tranche du boîtier 101 de l'outil d'action 100.As shown by figures 1 and 2 , the action tool 100 comprises a parallelepipedal housing 101 separated longitudinally into two parts 110, 120 which are spaced apart from each other. These two parts 110, 120 each have a front wall 111, 121 which is disposed orthogonal to the axis W of the crankshaft 50 and which is lined with returns 112, 122 extending orthogonally to said front wall. The two end walls 111, 121 are positioned facing each other so that their respective returns 112, 122 face each other and together form the edge of the housing 101 of the action tool 100.

Le retour inférieur de chaque partie 110, 120 du boîtier 101 est interrompu sur une partie centrale de sa longueur de manière que la tranche du boîtier 101 présente une ouverture 106 disposée au-dessus de la portée 52, 53 du vilebrequin 50 à galeter.The lower return of each portion 110, 120 of the housing 101 is interrupted on a central portion of its length so that the edge of the housing 101 has an opening 106 disposed above the bearing 52, 53 of the crankshaft 50 to be rolled.

Le boîtier 101 est plus particulièrement positionné par rapport au vilebrequin 50 de manière à ce que ses retours inférieurs s'étendent en longueur orthogonalement à l'axe W du vilebrequin.The housing 101 is more particularly positioned relative to the crankshaft 50 so that its lower returns extend in length orthogonal to the axis W of the crankshaft.

Les parois frontales 111, 121 des deux parties 110, 120 du boîtier 101 présentent chacune une ouverture circulaire 113, 123 centrale dans lesquelles est glissé un axe 180. Une douille à aiguilles 105 est montée sur l'axe 180 dans le boîtier 101.The end walls 111, 121 of the two parts 110, 120 of the housing 101 each have a circular opening 113, 123 central in which is slipped an axis 180. A needle bushing 105 is mounted on the axis 180 in the housing 101.

Comme le montre la figure 2, la face extérieure de chaque retour 112, 122 présente en renfoncement un décrochement qui s'étend jusqu'au bord libre dudit retour. Mis bout à bout, ces décrochements forment tout autour de chaque partie 110, 120 du boîtier 101 un embrèvement 115, 125. Ces deux embrèvements 115, 125 sont disposés en regard l'un de l'autre et forment un embrèvement commun 102, de section rectangulaire, le long de la tranche du boîtier 101.As shown in figure 2 , the outer face of each return 112, 122 has in recess a recess extending to the free edge of said return. Put together end to end, these recesses form around each part 110, 120 of the housing 101 a recess 115, 125. These two recesses 115, 125 are arranged opposite one another and form a common recess 102, rectangular section, along the edge of the housing 101.

En variante, on pourrait prévoir une autre géométrie pour la section de l'embrèvement commun 102, comme par exemple un embrèvement de section en forme de T.Alternatively, one could provide another geometry for the section of the common recess 102, such as a T-section section recess.

En variante, on pourrait prévoir que les embrèvements s'étendent sur la face intérieure de chaque retour, de manière que l'embrèvement commun soit disposé à l'intérieur du boîtier.Alternatively, it could be provided that the recesses extend on the inner face of each return, so that the common recess is disposed within the housing.

Avantageusement, comme le montre la figure 2, les deux parties 110, 120 du boîtier 101 sont maintenues à distance l'une de l'autre à l'aide de moyens d'écartement 130 réglables. Ces moyens d'écartement sont ici constitués par une entretoise 130 en U contre laquelle prennent appui les deux parties 110, 120 du boîtier 101.Advantageously, as shown in figure 2 the two parts 110, 120 of the housing 101 are kept at a distance from each other by means of adjustable spacing means 130. These spacing means here consist of a spacer 130 in U against which bear the two parts 110, 120 of the housing 101.

Plus particulièrement, cette entretoise 130 est adaptée à s'insérer dans l'embrèvement commun 102, sur trois de ses côtés (le côté supérieur et les deux côtés latéraux).More particularly, this spacer 130 is adapted to fit into the common recess 102, on three of its sides (the upper side and the two lateral sides).

Sa largeur est prévue pour écarter les deux parties 110, 120 du boîtier 101 d'une distance d déterminée. L'entretoise 130 est interchangeable.Its width is designed to separate the two parts 110, 120 of the housing 101 by a determined distance d. The spacer 130 is interchangeable.

On comprend alors que pour différentes largeurs d'entretoise, on peut écarter les deux parties du boîtier de la distance d voulue. On comprend également que selon la largeur de l'entretoise 130, la longueur de l'axe 180 varie. La coaxialité de chacune des deux parties 110, 120 du boîtier 101 est réalisée au moyen de l'entretoise 130.It is then understood that for different spacer widths, the two parts of the housing can be moved apart by the desired distance. It is also understood that depending on the width of the spacer 130, the length of the axis 180 varies. The coaxiality of each of the two parts 110, 120 of the housing 101 is achieved by means of the spacer 130.

Pour concourir au positionnement orthoradial de ces deux parties, les bords libres des retours 112 de la première partie 110 du boîtier 101 peuvent porter des plots 116 qui sont adaptés à s'engager dans des alésages correspondants réalisés dans l'entretoise 130 et dans les retours 122 de la deuxième partie 120 du boîtier 101 (voir figure 1).To contribute to the orthoradial positioning of these two parts, the free edges of the returns 112 of the first part 110 of the housing 101 can bear pads 116 which are adapted to engage in corresponding bores made in the spacer 130 and in the returns 122 of the second portion 120 of the housing 101 (see figure 1 ).

En variante, on peut prévoir un bossage sur les deux parties du boîtier et un alésage sur l'entretoise.Alternatively, there may be a boss on both parts of the housing and a bore on the spacer.

En variante encore, on peut prévoir un bossage sur l'entretoise et un alésage sur chaque partie du boîtier.In another variant, it is possible to provide a boss on the spacer and a bore on each part of the housing.

L'outil d'action 100 comporte par ailleurs des moyens de fixation des deux parties du boîtier 101 entre elles et de l'entretoise 130 dans l'embrèvement commun 102.The action tool 100 further comprises means for fixing the two parts of the housing 101 between them and the spacer 130 in the common recess 102.

Ces moyens de fixation comprennent des vis de fixation 103 dont les têtes prennent appui contre la paroi frontale 111 de la première partie 110 du boîtier, en différents points répartis sur sa périphérie, et dont les corps filetés sont engagés dans des alésages coaxiaux 117, 127, 137 réalisés dans les retours 112, 122 des deux parties du boîtier 101 et dans l'entretoise 130. Les alésages 127 des retours 122 de la deuxième partie 120 du boîtier 101 sont taraudés de manière à pouvoir coopérer avec les corps filetés de ces vis de fixation 103 (voir figures 1 et 2).These fixing means comprise fixing screws 103 whose heads bear against the front wall 111 of the first part 110 of the housing, at different points distributed around its periphery, and whose threaded bodies are engaged in coaxial bores 117, 127 , 137 made in the returns 112, 122 of the two parts of the housing 101 and in the spacer 130. The bores 127 of the returns 122 of the second portion 120 of the housing 101 are threaded so as to cooperate with the threaded bodies of these screws 103 (see figures 1 and 2 ).

En variante, on pourrait prévoir une fixation de l'entretoise par un système de mise en position et un serrage des deux parties du boîtier au moyen de vis de fixation.Alternatively, one could provide a fixing of the spacer by a positioning system and a tightening of the two parts of the housing by means of fixing screws.

Le boîtier 101 de l'outil d'action 100 comportant un logement intérieur 104 dans lequel sont montés des moyens d'écrouissage du vilebrequin 50, les parois frontales 111, 121 du boîtier 101 sont chacune percées de trois orifices 118 de formes oblongues en arc de cercle qui s'étendent autour de l'ouverture circulaire 113, 123 correspondante de ladite paroi et qui sont prévus pour permettre le passage de lubrifiant dans ledit logement intérieur 104 du boîtier 101.The housing 101 of the action tool 100 having an inner housing 104 in which are mounted the work hardening means of the crankshaft 50, the end walls 111, 121 of the housing 101 are each pierced by three orifices 118 of arcuate oblong shapes. which extend around the corresponding circular opening 113, 123 of said wall and which are provided to allow the passage of lubricant in said inner housing 104 of the housing 101.

Comme le montre plus particulièrement la figure 2, l'axe 180 forme un arbre sur lequel est engagée une roue de galetage 140 cylindrique. Cette roue de galetage 140 est en liaison pivot avec l'axe 180 au moyen du roulement à aiguilles 105 interposé entre ceux-ci.As shown more particularly in figure 2 the shaft 180 forms a shaft on which is engaged a cylindrical rolling wheel 140. This roller wheel 140 is pivotally connected to the axis 180 by means of the needle bearing 105 interposed therebetween.

L'épaisseur de la roue de galetage 140 et la largeur du roulement à aiguilles 105 sont prévues pour être inférieures à la distance séparant les faces intérieures des deux parois frontales 111, 121 du boîtier 101 (cette distance est bien sûr fonction de la largeur de l'entretoise 130). La roue de galetage 140 peut ainsi librement tourner autour de la couronne 114, tout en étant maintenue en translation sur cette couronne par les faces intérieures des parois frontales des deux parties du boîtier 101. On comprend alors que le changement de la roue de galetage 140 contraint également à changer l'entretoise 130, l'axe 180 et le roulement à aiguilles 105 correspondant.The thickness of the roller wheel 140 and the width of the needle bearing 105 are intended to be less than the distance separating the inner faces of the two end walls 111, 121 of the housing 101 (this distance is of course a function of the width of the the spacer 130). The roller wheel 140 can thus freely rotate around the ring 114, while being maintained in translation on this ring by the inner faces of the end walls of the two parts of the housing 101. It is then understood that the change of the roller wheel 140 also forced to change the spacer 130, the axis 180 and the corresponding needle bearing 105.

La roue de galetage 140 présente, à mi-hauteur de sa face cylindrique externe, une nervure centrale 141 de section rectangulaire qui s'étend sur l'ensemble de sa périphérie. Les faces latérales de cette nervure centrale 141 sont raccordées à la face cylindrique externe de la roue de galetage 140 par des congés arrondis 142.The roller wheel 140 has, at mid-height of its outer cylindrical face, a central rib 141 of rectangular section which extends over its entire periphery. The lateral faces of this central rib 141 are connected to the outer cylindrical face of the roller wheel 140 by rounded leaves 142.

L'outil d'action 100 comporte en outre deux galets 150 qui sont disposés chacun sur l'une des parties 110, 120 du boîtier 101 et qui sont maintenus par des cages à galets 161, 170 ad hoc bien connus de l'homme du métier.The action tool 100 further comprises two rollers 150 which are each arranged on one of the parts 110, 120 of the housing 101 and which are held by roller cages 161, 170 ad hoc well known to the man of the job.

Chaque galet 150 présente une forme de disque de faible épaisseur.Each roller 150 has a disc shape of small thickness.

Chaque galet 150 est disposé en dessous de l'ouverture 106, de manière à être au contact, d'un côté, d'un des congés arrondis 142 de la roue de galetage 140, et, de l'autre, d'une des gorges 54 du vilebrequin 50. Les galets peuvent ainsi exercer un effort de galetage important sur les gorges 54 du vilebrequin 50 pour les écrouir.Each roller 150 is disposed below the opening 106, so as to be in contact, on one side, with one of the rounded leaves 142 of the roller wheel 140, and, on the other, with one of the grooves 54 of the crankshaft 50. The rollers can thus exert a significant burnishing force on the grooves 54 of the crankshaft 50 to work harden.

Chaque cage à galet 161, 170 comporte des moyens de fixation 170 à une partie 110, 120 du boîtier de galetage et des moyens de logement 161 pour le galet 150. Ces moyens de logement permettent en particulier de maintenir le galet 150 en position pendant que le couple d'outils de galetage 1 est au repos et de le laisser pivoter pour rouler sur les gorges du vilebrequin.Each roller cage 161, 170 comprises attachment means 170 to a portion 110, 120 of the roller housing and housing means 161 for the roller 150. These housing means in particular allow the roller 150 to be held in position while the pair of rolling tools 1 is at rest and let it rotate to roll on the grooves of the crankshaft.

Claims (9)

  1. Burnishing tool (100) casing (101), characterized in that it includes two parts (110, 120) separated from each other by adjustable spacing means (130).
  2. Casing (101) according to the preceding claim, characterized in that the spacing means comprise a spacer (130) against which the two parts (110, 120) of the casing (101) bear.
  3. Casing (101) according to the preceding claim, characterized in that the spacer (130) is interchangeable and the two parts (110, 120) of the casing (101) are separated by a given distance (d) that is a function of the width of the spacer (130).
  4. Casing (101) according to either of the preceding two claims, characterized in that an inside recess (115, 125) intended to receive said spacer (130) is produced on each of the two parts (110, 120) of the casing (101) to provide means for centring the two parts (110, 120) of the casing (101) relative to each other.
  5. Casing (101) according to the preceding claim, characterized in that said inside recesses (115, 125) are formed on the edge of the casing (101).
  6. Casing (101) according to Claim 4, characterized in that, each part (110, 120) of the casing (101) including an interior face that, with the interior face of the other part (110, 120) of the casing (101), delimits an interior housing (104) receiving a burnishing wheel (140), the inside recesses are formed on said interior faces.
  7. Casing (101) according to any of the preceding three claims, characterized in that the centring means include studs (116) projecting from one (110) of the two parts of the casing (101) and holes that are produced in the other (120) of the two parts of the casing (101) and are adapted to receive said studs (116).
  8. Casing (101) according to any of the preceding claims, characterized in that the casing (101) includes means (103) for fixing the two parts (110, 120) of the casing (101) to the spacing means (130).
  9. Casing (101) according to the preceding claim, characterized in that the fixing means include fixing screws (103) the heads of which bear on one (110) of the two parts of the casing (101) and the bodies of which are passed through holes (137) in the spacing means (130) and are screwed into threaded holes (127) of the other (120) of the two parts of the casing (101).
EP07823523A 2006-07-31 2007-06-27 Housing for a roller-burnishing tool having an adjustable width Not-in-force EP2046530B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07823523T PL2046530T3 (en) 2006-07-31 2007-06-27 Housing for a roller-burnishing tool having an adjustable width

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0606989A FR2904250B1 (en) 2006-07-31 2006-07-31 ADJUSTABLE WIDTH TOOL HOUSING
PCT/FR2007/051539 WO2008017767A1 (en) 2006-07-31 2007-06-27 Housing for a roller-burnishing tool having an adjustable width

Publications (2)

Publication Number Publication Date
EP2046530A1 EP2046530A1 (en) 2009-04-15
EP2046530B1 true EP2046530B1 (en) 2010-01-27

Family

ID=37876994

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07823523A Not-in-force EP2046530B1 (en) 2006-07-31 2007-06-27 Housing for a roller-burnishing tool having an adjustable width

Country Status (7)

Country Link
EP (1) EP2046530B1 (en)
AT (1) ATE456425T1 (en)
DE (1) DE602007004621D1 (en)
ES (1) ES2337845T3 (en)
FR (1) FR2904250B1 (en)
PL (1) PL2046530T3 (en)
WO (1) WO2008017767A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9469010B2 (en) 2013-03-14 2016-10-18 Honda Motor Co., Ltd. Burnishing unit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59142060A (en) * 1983-01-25 1984-08-15 Honda Motor Co Ltd Burnishing work apparatus
DE102004010468B3 (en) * 2004-03-01 2005-08-11 Hegenscheidt-Mfd Gmbh & Co. Kg Divided fixed rolling head for twisting tool has two part body is pivoted to each other by hinge along endface opposite to endface for receiving roller cage

Also Published As

Publication number Publication date
ATE456425T1 (en) 2010-02-15
PL2046530T3 (en) 2010-06-30
FR2904250A1 (en) 2008-02-01
WO2008017767A1 (en) 2008-02-14
ES2337845T3 (en) 2010-04-29
FR2904250B1 (en) 2008-09-12
DE602007004621D1 (en) 2010-03-18
EP2046530A1 (en) 2009-04-15

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