EP2110529B1 - Method for manufacturing a flat exhaust flange - Google Patents
Method for manufacturing a flat exhaust flange Download PDFInfo
- Publication number
- EP2110529B1 EP2110529B1 EP09305312A EP09305312A EP2110529B1 EP 2110529 B1 EP2110529 B1 EP 2110529B1 EP 09305312 A EP09305312 A EP 09305312A EP 09305312 A EP09305312 A EP 09305312A EP 2110529 B1 EP2110529 B1 EP 2110529B1
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- EP
- European Patent Office
- Prior art keywords
- flange
- orifice
- heel
- diameter
- dimensions
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1872—Construction facilitating manufacture, assembly, or disassembly the assembly using stamp-formed parts or otherwise deformed sheet-metal
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
Definitions
- a flat exhaust flange is conventionally placed between two associated exhaust members, namely a manifold and, for example, a pipe or a decoupler, also called flexible (see for example FR2449840 ).
- a conventional exhaust flange 10 has a substantially flat coupling face 11 and a bead 12 formed on the coupling face 11.
- the coupling face 11 has a first orifice 18 formed opposite the heel 12 and, for example, two fixing orifices 13 for attaching the flange 10 to said associated exhaust member.
- the heel 12 has a second orifice 14, intended to receive an associated exhaust member, of the hose or flexible type, whose dimensions, namely the diameter, the height, the orientation relative to the mating face 11, are variable and depend in particular on the dimensions and the application variants of the flange 10.
- a method of manufacturing such an exhaust flange comprises the embodiment, in a first step, of the coupling face 11 and the heel 12, then, in a second step, the drilling of the heel 12 to form the second orifice 14.
- the heel 12 is different depending on the size and the application of the flange 10, the height of the heel 12 is greater or smaller and the orifice 14 pierced in the heel 12 has a larger or smaller diameter, and an orientation relative to the coupling face 11 more or less pronounced.
- the interfaces are not common and the associated fasteners having never the same. same dimensions.
- the object of the invention is to remedy all of the aforementioned drawbacks and to provide a method of manufacturing a flat exhaust flange, which can be applied for a number of different dimensions and application variants. a flange, without having the particular obligation to create or change the tools associated with such a manufacturing process.
- this object is achieved by the appended claims and, more particularly, by the fact that said step of producing the coupling face and the heel of the flange is made from a base matrix comprising a substantially spherical shape defining a portion of the heel of the flange, before said piercing step, said base matrix being common to several dimensions and variants of application of the flange.
- the invention also relates to the production of a flat exhaust flange made by such a method, which is simple to manufacture and can be applied to different types of vehicles, while avoiding creations or changes of difficult and expensive tools for the manufacturing process.
- This object of the invention is characterized by the appended claims and, more particularly, by the fact that a portion of said heel is of substantially spherical shape, constructed from a reference sphere of center and height with respect to the predetermined coupling face, only the diameter of said second orifice and said height of the center of said sphere relative to the mating face of the flange being variable, according to the dimensions and application variants of the flange.
- the manufacturing method according to the invention of a flat exhaust flange 10 according to the invention consists in producing the coupling face 11 and the heel 12 of the flange 10 in a single operation, from a matrix basic 15 ( Figures 3 and 4 ), common for different types, different dimensions and different applications of the flange 10.
- the base matrix 15 comprises the coupling face 11, provided, in the particular embodiment shown in FIGS. figures 2 and 3 , two fixing points 13, and a portion 16 of substantially spherical shape, defining a portion of the heel 12 before drilling.
- the substantially spherical portion 16 of the base matrix 15 may be of substantially semispherical shape or in the form of a portion of a sphere, as described hereinafter.
- the dimensions and shape of the substantially spherical portion 16 of the base matrix 15 are determined and constructed from a reference sphere 17 defined by its center C and the height H of the center C of the sphere 17 by relative to the coupling face 11 of the flange 10. More particularly, the reference sphere 17 is defined by its radius R, which is a resultant of the diameter to be respected of an associated sealing zone 19 situated between the face coupling member 11 and the exhaust member adjoining the flange 10, namely an exhaust manifold 20.
- the diameter of the sealing zone 19 to be respected is of the order of 70 mm and the seal (not shown) placed between the coupling face 11 and the manifold 20 is made of stainless steel, with a thickness of the order of 0.3mm to 0.5mm.
- the base matrix 15 is produced, for example, by a hot stamping process or advantageously by stamping, so as to form a single piece of constant thickness E ( figure 4 ), defining the coupling face 11 and the heel 12 before drilling.
- the base matrix 15 is formed from a striking tool (not shown), common to several dimensions and application variants of the flange 10, in particular in order to be able to achieve an infinite cost different versions of the flange 10. The life of the stamping tool is thus greater than the lifetime, for example, of hot stamping tooling.
- the manufacturing method of the flange 10 also comprises a step of drilling the orifice 14 into the spherical shape 16 of the base matrix 15, by means of a piercing tool (Not shown) having a variable diameter nozzle, according to the predetermined dimensions of the orifice 14 to be pierced.
- a piercing tool (Not shown) having a variable diameter nozzle, according to the predetermined dimensions of the orifice 14 to be pierced.
- only the diameter D1 of the orifice 14 and its orientation, namely the angle X on the figure 5 relative to the coupling face 11 of the flange 10 are variable according to the desired dimensions and application variants of the flange 10.
- the angle X of orientation of the orifice 14 of the heel 12 corresponds to the orientation of the axis of a hose 21, inserted and welded in the orifice 14, with respect to the reference axis BB perpendicular to the coupling face 11 of the flange 10 and passing substantially through the center of the first orifice 18 associated with the coupling face 11.
- the orientation of the orifice 14 is effected at the opposite of the attachment points 13, pierced in the coupling face 11, so that nuts 22, associated with studs 23, inserted into the attachment points 13 and intended for fixing the flange 10 on the manifold 20, are accessible for clamping tools necessary for fixing the flange 10 on the manifold 20.
- Tables 1 to 6 below illustrate the combinations of possible values between the height H of the center C of the sphere 17 and the maximum possible angle X of orientation that can take the orifice 14 with respect to the mating face 11, to obtain a plurality of different flange variants 10 from the same base matrix 15, of which only the shape of the sphere 17 varies, as a function of the diameter D1 of the orifice 14 to be pierced, namely corresponding substantially at the diameter of the piece fixed in the orifice 14.
- Tables 1 to 6 give, respectively for a diameter of the orifice 14 of the order of 40 mm (Table 1), 45 mm (Table 2), 50 mm (Table 3), 55 mm (Table 4), 60 mm (Table 5) and 65mm (Table 6), the approximate maximum angle X of orientation of the orifice 14 with respect to the coupling face 11 as a function of the height H of the center C of the sphere 17.
- the angle maximum orientation X of the orifice 14 can go up to 32 °, for a diameter D1 of the orifice 14 to drill 40mm.
- the maximum orientation angle X of the orifice 14 can go up to 3 °, for a diameter D1 of the orifice 14 to drill 60mm.
- the maximum orientation angle X that can take the orifice 14 is 8 °.
- the exhaust flange 10 according to the invention is preferably produced in a thick stainless steel sheet with a thickness E ( figure 4 ) between 7mm and 8mm.
- the diameter D1 of the orifice 14 pierced in the heel 12 is therefore between 40mm and 65mm, preferably 45mm to 55mm, depending on the dimensions and the variations of application of the flange 10.
- the diameter D2 of the orifice 18 of the mating face 11 is variable ( figure 4 ).
- the manufacturing method according to the invention therefore allows from a single base matrix 15, to create different variants of the exhaust flange 10, in particular without heavy modifications of the tools.
- it is possible to achieve by the method according to the invention for example two or three positions of the center C of the sphere 17, according to Tables 1 to 6, to achieve two or three flanges 10 of different heights according to the possibilities of implantation of the flange 10 and its adjoining room.
- the exhaust flange 10 comprises a coupling face 11 provided with two attachment points 13 and the hole 14 of the heel 12 has a relatively small diameter D1 and an orientation X with respect to the coupling face 11, such as that the heel 12 has a high height, defining a substantially spherical shape quite pronounced.
- the variant embodiment of the exhaust flange 10 is distinguished from the previous one, in particular by the diameter D1 of the larger orifice 14 and by the orientation X of the orifice 14, so that the heel 12 of the flange 10 has a lower height and a spherical shape less pronounced, compared to the embodiment of the flange 10 shown on the figure 6 .
- the variant embodiment of the exhaust flange 10 differs from the preceding embodiments, represented on the Figures 6 and 7 , by the coupling face 11, which has three attachment points 13 and the diameter and orientation of the orifice 14, so that the flange 10 has a substantially intermediate height between the flange 10 shown on the figure 6 and the flange 10 shown on the figure 7 .
- the basic die 15 used to make the exhaust flange 10 shown on the figure 8 is therefore different from the basic matrix 15 used to make the exhaust flange 10 shown on the Figures 6 and 7 .
- the base die 15 still has the spherical portion 16 to form the heel 12, the above-described tables 1 to 6 being applicable in the same way to a three-point-of-attachment flange ( figure 8 ) or more.
- the exhaust flange 10 has the main advantage of having a very high rigidity, especially thanks to the heel 12 and the mating face 11 made during the same step, to respect the seal and significantly improve the flow of gas, in particular thanks to the heel 12 of substantially spherical shape. Moreover, the mating face 11 of the flange 10 no longer needs to be machined and the base matrix 15 used for the manufacture of the flange 10 does not have a demolding problem or fixing problem.
- Such a method of manufacturing a flange 10, as described above makes it possible to reduce the number of tools to be manufactured, for example by limiting itself to two or three heel height versions 12 per type of flange. 10, namely two, three, four attachment points 13, etc., and makes it possible to control and communicate the sealing and fixing zones of the flange 10.
- Such a method also makes it possible to improve the time and the cost of development of an exhaust flange 10 according to the invention, the improvement of the manufacturing time of a tool, and the use of an existing tool for a different flange (no need to re-create a new plan or a new scan in full).
- the invention is not limited to the various embodiments described above.
- the shapes and dimensions of the bead 12 and the coupling face 11 of the exhaust flange 10 are nonlimiting and depend on the dimensions and the application variants of the flange 10, as long as the method allows the creation of different flanges from a base matrix 15 common to different exhaust flange variants (Tables 1 to 6).
- the values in Tables 1 to 6 were taken to simplify the calculations.
- the diameter D1 of the orifice 14 considered varies most of the time according to intermediate values, for example of the order of 42.1 mm or 54.9 mm.
- the diameter D1 of the orifice 14 may be of a lower value, for example of the order of 15 mm to 30 mm.
- the bead 12 of the exhaust flange 10 may comprise a plurality of orifices 14, each associated with an exhaust member, for example of the hose or hose type, the diameter D1 of each orifice 14 being for example, of the order of 10 to 40mm.
- the invention can be applied to any type of exhaust line requiring the manufacture of an exhaust flange at lower costs.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
- Joints Allowing Movement (AREA)
- Flanged Joints, Insulating Joints, And Other Joints (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
L'invention concerne un procédé de fabrication d'une bride d'échappement plate, laquelle bride comporte une face d'accouplement, associée à un premier organe d'échappement et dotée d'un premier orifice, et un talon, doté d'au moins un second orifice destiné à recevoir un second organe d'échappement associé, le procédé comportant au moins :
- une étape de réalisation de la face d'accouplement et du talon de la bride,
- et une étape de perçage du talon, pour former ledit second orifice.
- a step of producing the coupling face and the heel of the flange,
- and a step of drilling the heel to form said second orifice.
Dans le domaine de l'échappement d'un véhicule automobile, une bride d'échappement plate est classiquement placée entre deux organes d'échappement associés, à savoir un collecteur et, par exemple, un tuyau ou un découpleur, appelé également flexible(voir par exemple
Par ailleurs, un procédé de fabrication d'une telle bride d'échappement, comme représentée sur les
En effet, comme représenté sur les
Ainsi, l'architecture des véhicules étant très différente selon les modèles, il est difficile actuellement de reprendre une bride d'un modèle de véhicule à l'autre. Il faut la plupart du temps recréer une bride pour chaque modèle, ainsi que l'outil associé pour la réalisation de la bride, engendrant donc des surcoûts importants en termes d'outillages et de process de fabrication de la bride.Thus, the architecture of the vehicles being very different depending on the model, it is currently difficult to take a flange of a model of vehicle to another. It is most of the time necessary to recreate a flange for each model, as well the associated tool for the realization of the flange, thus generating significant additional costs in terms of tools and manufacturing process of the flange.
L'invention a pour but de remédier à l'ensemble des inconvénients précités et a pour objet la réalisation d'un procédé de fabrication d'une bride d'échappement plate, qui puisse s'appliquer pour plusieurs dimensions et variantes d'application d'une bride, sans avoir notamment l'obligation de créer ou de changer les outillages associés à un tel procédé de fabrication.The object of the invention is to remedy all of the aforementioned drawbacks and to provide a method of manufacturing a flat exhaust flange, which can be applied for a number of different dimensions and application variants. a flange, without having the particular obligation to create or change the tools associated with such a manufacturing process.
Selon l'invention, ce but est atteint par les revendications annexées et, plus particulièrement, par le fait que ladite étape de réalisation de la face d'accouplement et du talon de la bride est réalisée à partir d'une matrice de base comportant une forme sensiblement sphérique définissant une partie du talon de la bride, avant ladite étape de perçage, ladite matrice de base étant commune à plusieurs dimensions et variantes d'application de la bride.According to the invention, this object is achieved by the appended claims and, more particularly, by the fact that said step of producing the coupling face and the heel of the flange is made from a base matrix comprising a substantially spherical shape defining a portion of the heel of the flange, before said piercing step, said base matrix being common to several dimensions and variants of application of the flange.
D'autres avantages et caractéristiques de l'invention peuvent être considérées isolément ou en combinaison :
- Ladite matrice de base est réalisée, par exemple par emboutissage, au moyen d'un outil de frappe, commun à plusieurs dimensions et variantes d'application de la bride.
- Ladite étape de perçage du talon, pour former ledit second orifice, est réalisée au moyen d'un outil de perçage comportant un embout à diamètre variable, selon les dimensions du second orifice à percer dans le talon.
- Le second orifice réalisé pendant ladite étape de perçage du talon présente un diamètre et une orientation par rapport à la face d'accouplement de la bride prédéterminés, selon les dimensions et variantes d'application de la bride.
- Said base matrix is made, for example by stamping, by means of a striking tool, common to several dimensions and application variants of the flange.
- Said bead piercing step, to form said second orifice, is carried out by means of a drilling tool comprising a variable diameter tip, according to the dimensions of the second orifice to be pierced in the heel.
- The second orifice made during said bead piercing step has a diameter and an orientation with respect to the mating face of the predetermined flange, according to the dimensions and application variants of the flange.
L'invention a également pour objet la réalisation d'une bride d'échappement plate réalisée par un tel procédé, qui soit simple à fabriquer et qui puisse s'appliquer à différents types de véhicules, tout en évitant des créations ou des changements d'outillages difficiles et coûteux pour le procédé de fabrication.The invention also relates to the production of a flat exhaust flange made by such a method, which is simple to manufacture and can be applied to different types of vehicles, while avoiding creations or changes of difficult and expensive tools for the manufacturing process.
Cet objet de l'invention est caractérisé par les revendications annexées et, plus particulièrement, par le fait qu'une partie dudit talon est de forme sensiblement sphérique, construite à partir d'une sphère de référence de centre et de hauteur par rapport à la face d'accouplement prédéterminés, uniquement le diamètre dudit second orifice et ladite hauteur du centre de ladite sphère par rapport à la face d'accouplement de la bride étant variables, selon les dimensions et variantes d'application de la bride.This object of the invention is characterized by the appended claims and, more particularly, by the fact that a portion of said heel is of substantially spherical shape, constructed from a reference sphere of center and height with respect to the predetermined coupling face, only the diameter of said second orifice and said height of the center of said sphere relative to the mating face of the flange being variable, according to the dimensions and application variants of the flange.
D'autres avantages et caractéristiques de l'invention peuvent être considérées isolément ou en combinaison :
- L'orientation maximale dudit second orifice du talon par rapport à la face d'accouplement de la bride dépend du diamètre dudit second orifice et de la hauteur du centre de ladite sphère.
- Le diamètre dudit second orifice du talon est compris entre 40mm et 65mm.
- La hauteur du centre de ladite sphère par rapport à la face d'accouplement de la bride est comprise entre 0mm et 75mm, selon le diamètre dudit second orifice du talon.
- L'épaisseur de la face d'accouplement de la bride est comprise entre 7mm et 8mm.
- The maximum orientation of said second bead orifice with respect to the mating flange face depends on the diameter of said second port and the height of the center of said sphere.
- The diameter of said second hole of the heel is between 40mm and 65mm.
- The height of the center of said sphere relative to the coupling face of the flange is between 0mm and 75mm, depending on the diameter of said second hole of the heel.
- The thickness of the coupling face of the flange is between 7mm and 8mm.
D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre de modes particuliers de réalisation de l'invention donnés à titre d'exemples non limitatifs et représentés aux dessins annexés, dans lesquels :
- Les
figures 1 et 2 représentent chacune une variante de réalisation d'une bride d'échappement plate selon l'art antérieur. - Les
figures 3 et 4 représentent, respectivement en perspective et en coupe selon l'axe A-A, une matrice de base utilisée pour la fabrication d'une bride d'échappement plate selon l'invention, selon un mode particulier de réalisation d'un procédé de fabrication selon l'invention. - La
figure 5 représente schématiquement une vue en coupe d'une bride d'échappement plate réalisée par le procédé de fabrication selon lesfigures 3 et 4 , positionnée entre des organes d'échappement associés. - Les
figures 6 et 7 représentent chacune une variante de réalisation d'une bride d'échappement plate selon l'invention, réalisée par un procédé de fabrication selon l'invention à partir de la matrice de base commune selon lesfigures 3 et 4 . - La
figure 8 représente une variante de réalisation d'une bride d'échappement plate selon l'invention, réalisée par un procédé de fabrication selon l'invention à partir d'une matrice de base différente.
- The
Figures 1 and 2 each represent an alternative embodiment of a flat exhaust flange according to the prior art. - The
Figures 3 and 4 represent respectively in perspective and in section along the axis AA, a basic matrix used for the manufacture of a flat exhaust flange according to the invention, according to a particular embodiment of a manufacturing method according to the invention. - The
figure 5 schematically represents a sectional view of a flat exhaust flange made by the manufacturing method according to theFigures 3 and 4 positioned between associated exhaust members. - The
Figures 6 and 7 each represent an alternative embodiment of a flat exhaust flange according to the invention, produced by a manufacturing method according to the invention from the common basic matrix according to theFigures 3 and 4 . - The
figure 8 represents an alternative embodiment of a flat exhaust flange according to the invention, produced by a manufacturing method according to the invention from a different base matrix.
En référence aux
Sur les
Comme représenté sur la
A titre d'exemple, le diamètre de la zone d'étanchéité 19 à respecter est de l'ordre de 70mm et le joint d'étanchéité (non représenté) placé entre la face d'accouplement 11 et le collecteur 20 est en inox, avec une épaisseur de l'ordre de 0,3mm à 0,5mm.By way of example, the diameter of the
Par ailleurs, la matrice de base 15 est réalisée, par exemple, par un procédé de frappe à chaud ou avantageusement par emboutissage, de manière à former une unique pièce d'épaisseur E constante (
Sur les
Plus particulièrement, l'angle X d'orientation de l'orifice 14 du talon 12 correspond à l'orientation de l'axe d'un flexible 21, inséré et soudé dans l'orifice 14, par rapport à l'axe de référence B-B perpendiculaire à la face d'accouplement 11 de la bride 10 et passant sensiblement par le centre du premier orifice 18 associé à la face d'accouplement 11. Par ailleurs, comme représenté plus particulièrement sur les
L'étape de perçage de l'orifice 14 dans le talon 12 et le calcul des dimensions de la matrice de base 15 destinée à la réalisation du talon 12 de la bride 10 va être décrit plus en détail au regard de la
Les tableaux 1 à 6 ci-dessous illustrent les combinaisons de valeurs possibles entre la hauteur H du centre C de la sphère 17 et l'angle X maximal possible d'orientation que peut prendre l'orifice 14 par rapport à la face d'accouplement 11, pour obtenir une pluralité de variantes de brides 10 différentes à partir d'une même matrice de base 15, dont uniquement la forme de la sphère 17 varie, en fonction du diamètre D1 de l'orifice 14 à percer, à savoir correspondant sensiblement au diamètre de la pièce fixée dans l'orifice 14.Tables 1 to 6 below illustrate the combinations of possible values between the height H of the center C of the
Les tableaux 1 à 6 donnent, respectivement pour un diamètre de l'orifice 14 de l'ordre de 40mm (Tableau 1), 45mm (Tableau 2), 50mm (Tableau 3), 55mm (Tableau 4), 60mm (Tableau 5) et 65mm (Tableau 6), l'angle X maximal approximatif d'orientation de l'orifice 14 par rapport à la face d'accouplement 11 en fonction de la hauteur H du centre C de la sphère 17.Tables 1 to 6 give, respectively for a diameter of the
A titre d'exemple, en se référant au Tableau 1, en fabriquant une matrice de base 15 dont le centre C de la sphère 17 est positionné à une hauteur H de 10mm en-dessous de la face d'accouplement 11, l'angle d'orientation X maximale de l'orifice 14 peut monter jusqu'à 32°, pour un diamètre D1 de l'orifice 14 à percer de 40mm. En se référant au Tableau 5, en fabriquant une matrice de base 15 dont le centre C de la sphère 17 est positionné à une hauteur H de 20mm en-dessous de la face d'accouplement 11, l'angle d'orientation X maximale de l'orifice 14 peut monter jusqu'à 3°, pour un diamètre D1 de l'orifice 14 à percer de 60mm.By way of example, with reference to Table 1, by making a
Plus particulièrement, comme représenté sur la
Dans tous les cas, quelles que soient les valeurs combinées des tableaux 1 à 6 ci-dessus, pour fabriquer la matrice de base 15, l'étape de perçage pour former l'orifice 14 dans le talon 12 doit prendre en compte le fait que les zones de soudure 24 du flexible 21 ne doivent pas être en contact avec la face d'accouplement 11 (
Par ailleurs, encore à titre d'exemple, la bride d'échappement 10 selon l'invention est réalisée, de préférence, dans une tôle inox épaisse, avec une épaisseur E (
Le procédé de fabrication selon l'invention, comme décrit ci-dessus, permet donc à partir d'une unique matrice de base 15, de créer différentes variantes de la bride d'échappement 10, notamment sans modifications lourdes des outillages. D'une façon générale, il est possible de réaliser grâce au procédé selon l'invention, par exemple deux ou trois positions du centre C de la sphère 17, selon les Tableaux 1 à 6, pour réaliser deux ou trois brides 10 de hauteurs différentes suivant les possibilités d'implantation de la bride 10 et de sa pièce attenante.The manufacturing method according to the invention, as described above, therefore allows from a
En effet, comme représenté sur la
Sur la
Sur la
La matrice de base 15 utilisée pour réaliser la bride d'échappement 10 représentée sur la
Ainsi, quel que soit la variante de réalisation de la bride d'échappement 10 comme décrit ci-dessus, celle-ci présente l'avantage principal d'avoir une très grande rigidité, notamment grâce au talon 12 et à la face d'accouplement 11 réalisés pendant une même étape, de respecter l'étanchéité et d'améliorer de façon significative l'écoulement des gaz, notamment grâce au talon 12 de forme sensiblement sphérique. Par ailleurs, la face d'accouplement 11 de la bride 10 n'a plus besoin d'être usinée et la matrice de base 15 servant à la fabrication de la bride 10 ne présente pas de problème de démoulage, ni de problème de fixation.Thus, whatever the embodiment of the
Par ailleurs, un tel procédé de fabrication d'une bride 10, comme décrit ci-dessus, permet de diminuer le nombre d'outillages à fabriquer, en se limitant par exemple à deux ou trois versions de hauteurs de talon 12 par type de bride 10, à savoir deux, trois, quatre points de fixation 13, etc., et permet de maîtriser et communaliser les zones d'étanchéité et de fixation de la bride 10. Un tel procédé permet également l'amélioration du temps et du coût de développement d'une bride d'échappement 10 selon l'invention, l'amélioration du temps de fabrication d'un outillage, et l'utilisation d'un outillage existant pour une bride différente (aucun besoin de recréer un nouveau plan ou une nouvelle numérisation en totalité).Furthermore, such a method of manufacturing a
L'invention n'est pas limitée aux différents modes de réalisation décrits ci-dessus. Notamment, les formes et les dimensions du talon 12 et de la face d'accouplement 11 de la bride d'échappement 10 sont non limitatives et dépendent des dimensions et variantes d'application de la bride 10, tant que le procédé permet la création de différentes brides à partir d'une matrice de base 15 commune à différentes variantes de brides d'échappement (Tableaux 1 à 6).The invention is not limited to the various embodiments described above. In particular, the shapes and dimensions of the
Par ailleurs, les valeurs des tableaux 1 à 6 on tété prises de manière à simplifier les calculs. D'une façon générale, le diamètre D1 de l'orifice 14 considéré varie la plupart du temps selon des valeurs intermédiaires, par exemple de l'ordre de 42,1mm ou 54,9mm. Dans d'autres variantes de réalisation, le diamètre D1 de l'orifice 14 être de valeur inférieure, par exemple de l'ordre de 15mm à 30mm.In addition, the values in Tables 1 to 6 were taken to simplify the calculations. In general, the diameter D1 of the
Dans une autre variante de réalisation non représentée, le talon 12 de la bride d'échappement 10 peut comporter plusieurs orifices 14, associés chacun à un organe d'échappement, par exemple du type tuyau ou flexible, le diamètre D1 de chaque orifice 14 étant, par exemple, de l'ordre de 10 à 40mm.In another variant embodiment not shown, the
L'invention peut s'appliquer à tout type de ligne d'échappement nécessitant la fabrication d'une bride d'échappement à moindres coûts.The invention can be applied to any type of exhaust line requiring the manufacture of an exhaust flange at lower costs.
Claims (5)
- Method for manufacturing a flat exhaust flange (10), which flange (10) comprises a coupling face (11), associated with a first exhaust member (20) and provided with a first orifice (18), and a shoulder (12), provided with at least one second orifice (14) intended to receive an associated second exhaust member (21), the method comprising at least:- a step for producing the coupling face (11) and the shoulder (12) of the flange (10),- and a step for piercing the shoulder (12), to form said second orifice (14),the method being characterised in that said step for producing the coupling face (11) and the shoulder (12) of the flange (10) is carried out using a basic die (15) comprising a shape (16) that is substantially spherical defining a portion of the shoulder (12) of the flange (10), before said piercing step, said basic die (15) being common to several dimensions and variant applications of the flange (10).
- Method according to the preceding claim, characterised in that said basic die (15) is produced by means of a striking tool, common to several dimensions and variant applications of the flange (10).
- Method according to one of the preceding claims, characterised in that said basic die (15) is produced by stamping.
- Method according to any one of the receding claims, characterized in that said step for piercing the shoulder (12), to form said second orifice (14) is carried out by Means of a piercing tool that has a trip with variable diameter, depending on the dimensions of the second orifice (14) to be pierced in the shoulder (12).
- Method according to any one of the preceding claims, characterized in that the second orifice (14) produced during said step for piercing the shoulder (12) has a diameter (D1) and an orientation (X) relative to the coupling face (11) of the flange (10) that are predetermined, according to the dimensions and variant applications of the flange (10).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0852495A FR2929987B1 (en) | 2008-04-14 | 2008-04-14 | PROCESS FOR MANUFACTURING A FLAT AND FLANGE EXHAUST FLANGE REALIZED BY SUCH A METHOD |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2110529A1 EP2110529A1 (en) | 2009-10-21 |
EP2110529B1 true EP2110529B1 (en) | 2011-06-08 |
Family
ID=40044074
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09305312A Active EP2110529B1 (en) | 2008-04-14 | 2009-04-10 | Method for manufacturing a flat exhaust flange |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2110529B1 (en) |
AT (1) | ATE512291T1 (en) |
FR (1) | FR2929987B1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10989076B2 (en) | 2018-02-13 | 2021-04-27 | Pridgeon & Clay, Inc. | Turbo housing element |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2449840A1 (en) * | 1979-02-20 | 1980-09-19 | Renault | Sprung and bolted joint car exhaust pipe - uses fixed collar and sleeve with incurved lip bearing on bellmouth of other pipe end to form ball joint |
US5683119A (en) * | 1996-09-10 | 1997-11-04 | Metex Corporation | Pipe joint and seal therefor |
FR2821025B1 (en) * | 2001-02-22 | 2003-08-01 | Renault | THIN EXHAUST FLANGES |
DE10359054A1 (en) * | 2003-12-17 | 2005-07-21 | Daimlerchrysler Ag | Flange for exhaust manifold of motor vehicle, has metal sheet shaped part that is manufactured by reverse stamping technique, and fastening units connected to openings provided on either sides of central opening of metal sheet part |
-
2008
- 2008-04-14 FR FR0852495A patent/FR2929987B1/en not_active Expired - Fee Related
-
2009
- 2009-04-10 AT AT09305312T patent/ATE512291T1/en not_active IP Right Cessation
- 2009-04-10 EP EP09305312A patent/EP2110529B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
ATE512291T1 (en) | 2011-06-15 |
EP2110529A1 (en) | 2009-10-21 |
FR2929987A1 (en) | 2009-10-16 |
FR2929987B1 (en) | 2010-04-30 |
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