EP1674170B1 - Method for making a heat exchanger collector et device for carrying out this method - Google Patents
Method for making a heat exchanger collector et device for carrying out this method Download PDFInfo
- Publication number
- EP1674170B1 EP1674170B1 EP05292767A EP05292767A EP1674170B1 EP 1674170 B1 EP1674170 B1 EP 1674170B1 EP 05292767 A EP05292767 A EP 05292767A EP 05292767 A EP05292767 A EP 05292767A EP 1674170 B1 EP1674170 B1 EP 1674170B1
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- EP
- European Patent Office
- Prior art keywords
- punch
- tube
- active
- translation
- wall
- 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/28—Perforating, i.e. punching holes in tubes or other hollow bodies
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/0243—Header boxes having a circular cross-section
Definitions
- the present invention relates to a method of manufacturing a heat exchanger collector, but also to a device for implementing such a method.
- the invention finds a particularly advantageous, but not exclusive, application in the field of heat exchangers for motor vehicles.
- a heat exchanger is schematically composed of two parallel tubular manifolds which are interconnected via a plurality of perpendicular hollow fins. To be able to communicate these hollow fins with each collector, and thus allow the circulation of a cooling fluid in the exchanger, it is necessary to arrange through the wall of each collector as many openings as there are hollow fins to be joined.
- the manufacture of a heat exchanger collector therefore essentially consists of producing a series of openings, generally equidistant, in a metal tube.
- the making of each opening is generally carried out by drilling without removal of material using a punch, that is to say a sharp element capable of starting and piercing the wall of the tube.
- a known manufacturing process consists in making the openings one after the other, by incrementally moving the same punch along one or more axes. This type of process presents However, the disadvantage of being relatively long since only one drilling tool is used, and it is therefore necessary to wait for the completion of an opening before being able to undertake a new drilling. In addition, the succession of these independent drilling operations is likely to generate a certain lack of precision in the realization of the openings, which can become problematic at the time of assembly proper of the heat exchanger.
- the technical problem to be solved, by the object of the present invention is to propose a method of manufacturing a heat exchanger collector, comprising a drilling step without removing material from a plurality of openings through the wall of a tube, a method that would avoid the problems of the state of the art being particularly particularly energy-efficient, while ensuring significantly faster implementation and accuracy of implementation.
- the use of a separate punch for each opening makes it possible to significantly accelerate the manufacturing process of the collector. Moreover, the maintenance of each punch in its opening, during the entire piercing phase, improves the accuracy of realization of other openings.
- the initial position of the tube is no longer the only reference element, the positions of the already drilled openings also constitute appreciable reference points.
- the non-simultaneous production of the different openings requires considerably less energy, while remaining of comparable speed.
- the energy expenditure inherent in the drilling of all the openings is somehow distributed over time so that the power requirement is less.
- the different holes are however made sufficiently close to the speed of execution is closer to that of the second type of processes of the prior art, the first.
- the openings were arranged successively, that is to say one after the other. However, it is particularly advantageous that these operations are grouped together over a relatively short period of time, so that the speed of execution the manufacturing process is maximum. Also, and according to a feature of the method according to the invention, the realization of the different openings is performed substantially concomitantly. In practice, this means that several punches can be implemented almost simultaneously, that is to say with a relatively small time lag. The important thing is that the punches are not operated strictly at the same time in order to minimize the energy needs at all times.
- each opening is carried out gradually.
- This characteristic means that the drilling of each opening does not necessarily occur continuously but that it can be performed in several distinct times, possibly separated by delays.
- the decomposition of each piercing into different independent phases advantageously makes it possible to increase the quality of production of the openings in significant proportions. For example, a drilling operation may begin with a roughing phase, followed by a delay phase to dissipate the mechanical stresses generated inside the material during its deformation, and finally ending with a finishing phase.
- the single figure illustrates schematically and in partial section a device for implementing the manufacturing method according to the invention.
- the single figure shows a device 1 for the manufacture of a heat exchanger collector, and more specifically the drilling without removal of material of a plurality of openings (102a, 102b, 102c, 102d, 102e, 102f, 102g ) through the wall 101 of a tube 100.
- the device (1) is first provided with holding means (10) which are able to immobilize the tube (100) in a given position.
- the device (1) is further provided with a plurality of punches (20a, 20b, 20c, 20d, 20e, 20f, 20g) which are movably mounted in translation (arrow f1) in a direction perpendicular to the axis of the tube (100).
- Each mobility (arrow f1) is exerted between a retracted position in which the active end (21a, 21b, 21c, 21d, 21e, 21f, 21g) of each punch (20a, 20b, 20c, 20d, 20e, 20f , 20g) is spaced from the wall (101) of the tube (100), and an extended position in which said active end (21a, 21b, 21c, 21d, 21e, 21f, 21g) is inserted through said wall ( 101) of the tube (100).
- the device (1) finally comprises an actuating member (30) which is movably mounted in translation (arrow f2) in a direction perpendicular to the punches (20a, 20b, 20c, 20d, 20e, 20f, 20g).
- the actuating member (30) further comprises a bearing surface (31) at least partially inclined which is able to cooperate by sliding contact with the passive end (22a, 22b, 22c, 22d, 22e, 22f , 22g) of each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g).
- the assembly is arranged in such a way that the translation of the actuating member (30) (arrow f2) causes the translation of each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g) (arrow f1 ) between its retracted position and its deployed position.
- the bearing surface (31) of the actuating member (30) comprises at least one active part (32, 33), forming a ramp, which is inclined with respect to the perpendicular to the direction in which each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g) extends.
- This characteristic means, on the one hand, that the bearing surface (31) is not necessarily regularly inclined, and that on the other hand, the slope of each active part (32, 33) is not not necessarily continuous. In both cases, there may indeed be breaks in slopes, that is to say abrupt changes in inclination.
- Each part (32, 33) is here called active because, because of its inclination, it is able to cause the progressive displacement of each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g) during the translation of the actuating member (30), thereby fully playing its role of ramp.
- each active part (32, 33) is rectilinear. This characteristic makes it possible to generate the displacement of each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g) with a constant speed, when the speed of translation of the actuating member (30) is also constant.
- each active part (32, 33) could very well be curvilinear.
- the speed of implementation of each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g) could then advantageously be modulated according to the degree of insertion of its active end (21a, 21b, 21c, 21d, 21e , 21f, 21g) in the wall (101) of the tube (100).
- the slopes of the various active parts (32, 33) are substantially identical.
- This characteristic can be advantageously combined with the fact that the passive end (22a, 22b, 22c, 22d, 22e, 22f, 22g) of each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g) has a bevelled shape of which the inclination substantially corresponds to the slope of each active part (32, 33) of the bearing surface.
- This formal complementarity makes it possible to maximize the area of contact between the actuating member (30) and each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g) when an active part 32, 33 cooperates by sliding contact.
- the bearing surface (31) of the actuating member 30 comprises at least one passive portion (34), forming a delay zone, which is parallel to the perpendicular to the direction in which extends each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g).
- This feature also means that the bearing surface (31) is not necessarily regularly inclined, but may have one or more portions extending perpendicularly to the direction of each punch (20a, 20b, 20c). , 20d, 20e, 20f, 20g).
- Each part (34) is here called passive because, because of its inclination, it does not affect the displacement of each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g) during translation (arrow f2) of the actuating member (30), thereby fully playing its time zone.
- the bearing surface (31) of the actuating member (30) has two active parts (32, 33) separated by a passive part (34).
- the first active part (32) corresponds to a roughing phase
- the passive part (34) to a delay phase
- the second active part (33) to a finishing phase as regards the production of each opening (102a 102b, 102c, 102d, 102e, 102f, 102g).
- the device (1) comprises guide means (40) in displacement of each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g).
- the holding means (10) are composed of two jaws (11, 12) whose assembly defines an inner housing (13) of substantially complementary shape to the tube (100).
- one of the jaws (12) is advantageously provided here with a series of through bores (41a, 41b, 41c, 41d, 41e, 41f, 41g), forming guide means (40), which are arranged transversely relative to the axis of the inner housing (13) and which are respectively able to guide the movement of each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g) during their respective translations (arrow f1).
- the invention can be applied to any type of heat exchanger, in particular those used in motor vehicles but also in industrial installations.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Punching Or Piercing (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
La présente invention concerne un procédé de fabrication d'un collecteur d'échangeur thermique, mais également un dispositif permettant de mettre en oeuvre un tel procédé.The present invention relates to a method of manufacturing a heat exchanger collector, but also to a device for implementing such a method.
Le document
L'invention trouve une application particulièrement avantageuse, mais non exclusive, dans le domaine des échangeurs thermiques pour véhicules automobiles.The invention finds a particularly advantageous, but not exclusive, application in the field of heat exchangers for motor vehicles.
Un échangeur thermique est schématiquement composé de deux collecteurs tubulaires parallèles qui sont reliés entre eux par l'intermédiaire d'une pluralité d'ailettes creuses perpendiculaires. Pour pouvoir faire communiquer ces ailettes creuses avec chaque collecteur, et ainsi permettre la circulation d'un fluide de refroidissement dans l'échangeur, il est nécessaire de ménager à travers la paroi de chaque collecteur autant d'ouvertures qu'il y a d'ailettes creuses à solidariser.A heat exchanger is schematically composed of two parallel tubular manifolds which are interconnected via a plurality of perpendicular hollow fins. To be able to communicate these hollow fins with each collector, and thus allow the circulation of a cooling fluid in the exchanger, it is necessary to arrange through the wall of each collector as many openings as there are hollow fins to be joined.
La fabrication d'un collecteur d'échangeur thermique consiste donc essentiellement à réaliser une série d'ouvertures, généralement équidistantes, dans un tube métallique. Dans la pratique, la réalisation de chaque ouverture s'effectue généralement par perçage sans enlèvement de matière à l'aide d'un poinçon, c'est-à-dire un élément pointu susceptible d'entamer et de percer la paroi du tube.The manufacture of a heat exchanger collector therefore essentially consists of producing a series of openings, generally equidistant, in a metal tube. In practice, the making of each opening is generally carried out by drilling without removal of material using a punch, that is to say a sharp element capable of starting and piercing the wall of the tube.
Un procédé de fabrication connu consiste à réaliser les ouvertures les unes après les autres, en déplaçant de manière incrémentale un même poinçon suivant un ou plusieurs axes. Ce type de procédé présente toutefois l'inconvénient d'être relativement long puisqu'un seul outil de perçage est utilisé, et qu'il faut par conséquent attendre la réalisation complète d'une ouverture avant de pouvoir entreprendre un nouveau percement. De plus, la succession de ces opérations de perçage indépendantes est de nature à générer un certain manque de précision dans la réalisation des ouvertures, ce qui peut devenir problématique au moment de l'assemblage proprement dit de l'échangeur thermique.A known manufacturing process consists in making the openings one after the other, by incrementally moving the same punch along one or more axes. This type of process presents However, the disadvantage of being relatively long since only one drilling tool is used, and it is therefore necessary to wait for the completion of an opening before being able to undertake a new drilling. In addition, the succession of these independent drilling operations is likely to generate a certain lack of precision in the realization of the openings, which can become problematic at the time of assembly proper of the heat exchanger.
Pour remédier à cette difficulté, il est possible d'utiliser un autre procédé de fabrication dans lequel les ouvertures sont ménagées simultanément, à l'aide d'une presse hydraulique par exemple. Dans ce cas cependant, l'utilisation concomitante d'une pluralité d'outils de perçage nécessite beaucoup de puissance et donc d'énergie. Il en résulte un impact négatif en terme de coût de production.To overcome this difficulty, it is possible to use another manufacturing method in which the openings are formed simultaneously, using a hydraulic press for example. In this case, however, the concomitant use of a plurality of drilling tools requires a lot of power and therefore energy. This results in a negative impact in terms of cost of production.
Aussi le problème technique à résoudre, par l'objet de la présente invention, est de proposer un procédé de fabrication d'un collecteur d'échangeur thermique, comportant une étape de perçage sans enlèvement de matière d'une pluralité d'ouvertures à travers la paroi d'un tube, procédé qui permettrait d'éviter les problèmes de l'état de la technique en étant notamment particulièrement économique en énergie, tout en garantissant une rapidité d'exécution et une précision de réalisation sensiblement améliorées.Also the technical problem to be solved, by the object of the present invention, is to propose a method of manufacturing a heat exchanger collector, comprising a drilling step without removing material from a plurality of openings through the wall of a tube, a method that would avoid the problems of the state of the art being particularly particularly energy-efficient, while ensuring significantly faster implementation and accuracy of implementation.
La solution au problème technique posé consiste, selon la présente invention, dans l'ensemble des caractéristiques indiquées dans la revendication 1.The solution to the technical problem posed consists, according to the present invention, in all of the features indicated in claim 1.
L'invention telle qu'ainsi définie présente un grand nombre d'avantages par rapport aux procédés de l'art antérieur.The invention as thus defined has a large number of advantages over prior art methods.
Vis-à-vis du premier type de procédés précédemment évoqué, l'utilisation d'un poinçon distinct pour chaque ouverture permet d'accélérer significativement le processus de fabrication du collecteur. Par ailleurs, le maintien de chaque poinçon dans son ouverture, pendant toute le phase de percement, améliore la précision de réalisation des autres ouvertures. La position initiale du tube n'est plus le seul élément de repère, les positions des ouvertures déjà percées constituent également d'appréciables points de référence.With respect to the first type of process previously mentioned, the use of a separate punch for each opening makes it possible to significantly accelerate the manufacturing process of the collector. Moreover, the maintenance of each punch in its opening, during the entire piercing phase, improves the accuracy of realization of other openings. The initial position of the tube is no longer the only reference element, the positions of the already drilled openings also constitute appreciable reference points.
Par rapport au second type de procédés précédemment évoqué, la réalisation non simultanée des différentes ouvertures requiert considérablement moins d'énergie, tout en demeurant d'une rapidité comparable. En fait, la dépense énergétique inhérente au perçage de l'ensemble des ouvertures est en quelque sorte répartie dans le temps afin que le besoin en puissance soit moindre. Mais les différents perçages sont toutefois réalisés de manière suffisamment rapprochée pour que la vitesse d'exécution soit plus proche de celle du second type de procédés de l'art antérieur, que du premier.Compared with the second type of process previously mentioned, the non-simultaneous production of the different openings requires considerably less energy, while remaining of comparable speed. In fact, the energy expenditure inherent in the drilling of all the openings is somehow distributed over time so that the power requirement is less. But the different holes are however made sufficiently close to the speed of execution is closer to that of the second type of processes of the prior art, the first.
On a vu précédemment que les ouvertures étaient ménagées successivement, c'est-à-dire les unes après les autres. Cependant, il est particulièrement avantageusement que ces opérations soient regroupées sur un laps de temps relativement court, afin que la rapidité d'exécution du processus de fabrication soit maximale. Aussi, et selon une particularité du procédé selon l'invention, la réalisation des différentes ouvertures est effectuée de manière sensiblement concomitante. Dans la pratique, cela signifie que plusieurs poinçons peuvent être mis en oeuvre quasi simultanément, c'est-à-dire avec un décalage dans le temps relativement restreint. L'important est que les poinçons ne soient pas actionnés strictement au même moment afin de minimiser à tout instant les besoins en énergie.We have seen previously that the openings were arranged successively, that is to say one after the other. However, it is particularly advantageous that these operations are grouped together over a relatively short period of time, so that the speed of execution the manufacturing process is maximum. Also, and according to a feature of the method according to the invention, the realization of the different openings is performed substantially concomitantly. In practice, this means that several punches can be implemented almost simultaneously, that is to say with a relatively small time lag. The important thing is that the punches are not operated strictly at the same time in order to minimize the energy needs at all times.
Selon une autre particularité de ce procédé, la réalisation de chaque ouverture est effectuée graduellement. Cette caractéristique signifie que le perçage de chaque ouverture ne s'effectue pas forcément de manière continue mais qu'il peut être réalisé en plusieurs temps distincts, éventuellement séparés par des temporisations. La décomposition de chaque percement en différentes phases indépendantes permet avantageusement d'accroître la qualité de réalisation des ouvertures dans des proportions significatives. A titre d'exemple, une opération de perçage pourra commencer par une phase d'ébauche, suivie par une phase de temporisation permettant de dissiper les tensions mécaniques générées à l'intérieur de la matière lors de sa déformation, et enfin se terminer par une phase de finition.According to another particularity of this method, the realization of each opening is carried out gradually. This characteristic means that the drilling of each opening does not necessarily occur continuously but that it can be performed in several distinct times, possibly separated by delays. The decomposition of each piercing into different independent phases advantageously makes it possible to increase the quality of production of the openings in significant proportions. For example, a drilling operation may begin with a roughing phase, followed by a delay phase to dissipate the mechanical stresses generated inside the material during its deformation, and finally ending with a finishing phase.
L'invention concerne également un dispositif permettant de mettre en oeuvre un tel procédé de fabrication. Ce dispositif est remarquable en ce qu'il comporte:
- des moyens de maintien aptes à immobiliser le tube dans une position donnée,
- une pluralité de poinçons montés mobiles en translation suivant une direction sensiblement perpendiculaire à l'axe du tube, entre une position de retrait dans laquelle l'extrémité active de chaque poinçon est placée à distance de la paroi du tube, et une position déployée dans laquelle ladite extrémité active est insérée à travers ladite paroi du tube,
- un organe d'actionnement qui est monté mobile en translation suivant une direction perpendiculaire aux poinçons et qui comporte une surface d'appui au moins partiellement inclinée et apte à coopérer par contact glissant avec l'extrémité passive de chaque poinçon, la translation de l'organe d'actionnement étant apte à entraîner la translation de chaque poinçon entre sa position de retrait et sa position déployée.
- holding means adapted to immobilize the tube in a given position,
- a plurality of punches mounted movable in translation in a direction substantially perpendicular to the axis of the tube, between a withdrawal position in which the active end of each punch is placed at a distance from the wall of the tube, and an extended position in which said active end is inserted through said wall of the tube,
- an actuating member which is mounted to move in translation in a direction perpendicular to the punches and which has a bearing surface at least partially inclined and adapted to cooperate by sliding contact with the passive end of each punch, the translation of the actuating member being adapted to cause the translation of each punch between its retracted position and its deployed position.
La description suivante donnée à titre d'exemple non limitatif, fera mieux comprendre comment l'invention peut être réalisée, en référence aux dessins annexés sur lesquels:The following description given by way of non-limiting example, will better understand how the invention can be made, with reference to the accompanying drawings in which:
La figure unique illustre schématiquement et en coupe partielle un dispositif permettant de mettre en oeuvre le procédé de fabrication selon l'invention.The single figure illustrates schematically and in partial section a device for implementing the manufacturing method according to the invention.
Pour des raisons de clarté, les mêmes éléments ont été désignés par des références identiques. De même, seuls les éléments essentiels pour la compréhension de l'invention ont été représentés, et ceci sans respect de l'échelle et de manière schématique.For the sake of clarity, the same elements have been designated by identical references. Likewise, only the essential elements for understanding the invention have been represented, and this without regard to the scale and in a schematic manner.
La figure unique représente un dispositif 1 destiné à la fabrication d'un collecteur d'échangeur thermique, et plus précisément au perçage sans enlèvement de matière d'une pluralité d'ouvertures (102a,102b,102c, 102d, 102e, 102f, 102g) à travers la paroi 101 d'un tube 100.The single figure shows a device 1 for the manufacture of a heat exchanger collector, and more specifically the drilling without removal of material of a plurality of openings (102a, 102b, 102c, 102d, 102e, 102f, 102g ) through the
Conformément à l'objet de la présente invention, le dispositif (1) est tout d'abord pourvu de moyens de maintien (10) qui sont en mesure d'immobiliser le tube (100) dans une position donnée.In accordance with the object of the present invention, the device (1) is first provided with holding means (10) which are able to immobilize the tube (100) in a given position.
Le dispositif (1) est doté en outre d'une pluralité de poinçons (20a, 20b, 20c, 20d, 20e, 20f, 20g) qui sont montés mobiles en translation (flèche f1) suivant une direction perpendiculaire à l'axe du tube (100). Chaque mobilité (flèche f1) s'exerce entre une position de retrait dans laquelle l'extrémité active (21a, 21b, 21c, 21d, 21e, 21f, 21g) de chaque poinçon (20a, 20b, 20c, 20d, 20e, 20f, 20g) est placée à distance de la paroi (101) du tube (100), et une position déployée dans laquelle ladite extrémité active (21a, 21b, 21c, 21d, 21e, 21f, 21g) est insérée à travers ladite paroi (101) du tube (100).The device (1) is further provided with a plurality of punches (20a, 20b, 20c, 20d, 20e, 20f, 20g) which are movably mounted in translation (arrow f1) in a direction perpendicular to the axis of the tube (100). Each mobility (arrow f1) is exerted between a retracted position in which the active end (21a, 21b, 21c, 21d, 21e, 21f, 21g) of each punch (20a, 20b, 20c, 20d, 20e, 20f , 20g) is spaced from the wall (101) of the tube (100), and an extended position in which said active end (21a, 21b, 21c, 21d, 21e, 21f, 21g) is inserted through said wall ( 101) of the tube (100).
Le dispositif (1) comporte enfin un organe d'actionnement (30) qui est quant à lui monté mobile en translation (flèche f2) suivant une direction perpendiculaire aux poinçons (20a, 20b, 20c, 20d, 20e, 20f, 20g). L'organe d'actionnement (30) comporte par ailleurs une surface d'appui (31) au moins partiellement inclinée qui est en mesure de coopérer par contact glissant avec l'extrémité passive (22a, 22b, 22c, 22d, 22e, 22f, 22g) de chaque poinçon (20a, 20b, 20c, 20d, 20e, 20f, 20g). L'ensemble est agencé de manière à ce que la translation de l'organe d'actionnement (30) (flèche f2) entraîne la translation de chaque poinçon (20a, 20b, 20c, 20d, 20e, 20f, 20g) (flèche f1) entre sa position de retrait et sa position déployée.The device (1) finally comprises an actuating member (30) which is movably mounted in translation (arrow f2) in a direction perpendicular to the punches (20a, 20b, 20c, 20d, 20e, 20f, 20g). The actuating member (30) further comprises a bearing surface (31) at least partially inclined which is able to cooperate by sliding contact with the passive end (22a, 22b, 22c, 22d, 22e, 22f , 22g) of each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g). The assembly is arranged in such a way that the translation of the actuating member (30) (arrow f2) causes the translation of each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g) (arrow f1 ) between its retracted position and its deployed position.
Selon une particularité de l'invention, la surface d'appui (31) de l'organe d'actionnement (30) comporte au moins une partie active (32,33), formant rampe, qui est inclinée par rapport à la perpendiculaire à la direction dans laquelle s'étend chaque poinçon (20a, 20b, 20c, 20d, 20e, 20f, 20g). Cette caractéristique signifie, d'une part, que la surface d'appui (31) n'est pas forcément inclinée de manière régulière, et que d'autre part, la pente de chaque partie active (32, 33) n'est pas non plus obligatoirement continue. Dans les deux cas, il peut en effet exister des ruptures de pentes, c'est-à-dire des changements brusques d'inclinaison. Chaque partie (32, 33) est ici dite active car, du fait de son inclinaison, elle est en mesure d'engendrer le déplacement progressif de chaque poinçon (20a, 20b, 20c, 20d, 20e, 20f, 20g) lors de la mise en translation de l'organe d'actionnement (30), jouant ainsi pleinement son rôle de rampe.According to a feature of the invention, the bearing surface (31) of the actuating member (30) comprises at least one active part (32, 33), forming a ramp, which is inclined with respect to the perpendicular to the direction in which each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g) extends. This characteristic means, on the one hand, that the bearing surface (31) is not necessarily regularly inclined, and that on the other hand, the slope of each active part (32, 33) is not not necessarily continuous. In both cases, there may indeed be breaks in slopes, that is to say abrupt changes in inclination. Each part (32, 33) is here called active because, because of its inclination, it is able to cause the progressive displacement of each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g) during the translation of the actuating member (30), thereby fully playing its role of ramp.
De manière particulièrement avantageuse, la pente de chaque partie active (32, 33) est rectiligne. Cette caractéristique permet de générer le déplacement de chaque poinçon (20a, 20b, 20c, 20d, 20e, 20f, 20g) avec une vitesse constante, lorsque la vitesse de translation de l'organe d'actionnement (30) est elle aussi constante.In a particularly advantageous manner, the slope of each active part (32, 33) is rectilinear. This characteristic makes it possible to generate the displacement of each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g) with a constant speed, when the speed of translation of the actuating member (30) is also constant.
Il est à noter cependant que le profil de chaque partie active (32, 33) pourrait très bien être curviligne. La vitesse de mise en oeuvre de chaque poinçon (20a, 20b, 20c, 20d, 20e, 20f, 20g) pourrait alors avantageusement être modulée en fonction du degré d'insertion de son extrémité active (21a, 21b, 21c, 21d, 21e, 21f, 21g) dans la paroi (101) du tube (100).It should be noted, however, that the profile of each active part (32, 33) could very well be curvilinear. The speed of implementation of each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g) could then advantageously be modulated according to the degree of insertion of its active end (21a, 21b, 21c, 21d, 21e , 21f, 21g) in the wall (101) of the tube (100).
Ainsi qu'on peut le voir sur l'unique figure, les pentes des différentes parties actives (32, 33) sont sensiblement identiques. Cette caractéristique peut être avantageusement combinée au fait que l'extrémité passive (22a, 22b, 22c, 22d, 22e, 22f, 22g) de chaque poinçon (20a, 20b, 20c, 20d, 20e, 20f, 20g) présente une forme biseautée dont l'inclinaison correspond sensiblement à la pente de chaque partie active (32, 33) de la surface d'appui. Cette complémentarité formelle permet de maximiser la surface de contact entre l'organe d'actionnement (30) et chaque poinçon (20a, 20b, 20c, 20d, 20e, 20f, 20g) lorsqu'une partie active 32, 33 coopère par contact glissant avec le ou les extrémités passives (22a, 22b, 22c, 22d, 22e, 22f, 22g) correspondantes. La transmission du mouvement de translation de l'organe d'actionnement (30) à chacun des poinçons (20a, 20b, 20c, 20d, 20e, 20f, 20g) se voit ainsi significativement optimisée.As can be seen in the single figure, the slopes of the various active parts (32, 33) are substantially identical. This This characteristic can be advantageously combined with the fact that the passive end (22a, 22b, 22c, 22d, 22e, 22f, 22g) of each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g) has a bevelled shape of which the inclination substantially corresponds to the slope of each active part (32, 33) of the bearing surface. This formal complementarity makes it possible to maximize the area of contact between the actuating member (30) and each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g) when an
Selon une autre particularité de l'invention, la surface d'appui (31) de l'organe d'actionnement 30 comporte au moins une partie passive (34), formant zone de temporisation, qui est parallèle par rapport à la perpendiculaire à la direction dans laquelle s'étend chaque poinçon (20a, 20b, 20c, 20d, 20e, 20f, 20g). Cette caractéristique signifie également que la surface d'appui (31) n'est pas forcément inclinée de manière régulière, mais qu'elle peut présenter une ou plusieurs portions qui s'étendent perpendiculairement à la direction de chaque poinçon (20a, 20b, 20c, 20d, 20e, 20f, 20g). Chaque partie (34) est ici dite passive car, du fait de son inclinaison, elle n'a aucune incidence sur le déplacement de chaque poinçon (20a, 20b, 20c, 20d, 20e, 20f, 20g) lors de la mise en translation (flèche f2) de l'organe d'actionnement (30), jouant ainsi pleinement son zone de temporisation.According to another feature of the invention, the bearing surface (31) of the actuating
Dans ce mode particulier de réalisation, choisi uniquement à titre d'exemple, la surface d'appui (31) de l'organe d'actionnement (30) comporte deux parties actives (32, 33) séparée par une partie passive (34). La première partie active (32) correspond à une phase d'ébauche, la partie passive (34) à une phase de temporisation et la seconde partie active (33) à une phase de finition en ce qui concerne la réalisation de chaque ouverture (102a, 102b, 102c, 102d, 102e, 102f, 102g).In this particular embodiment, chosen solely by way of example, the bearing surface (31) of the actuating member (30) has two active parts (32, 33) separated by a passive part (34). The first active part (32) corresponds to a roughing phase, the passive part (34) to a delay phase and the second active part (33) to a finishing phase as regards the production of each opening (
Selon une nouvelle particularité de l'invention, le dispositif (1) comporte des moyens de guidage (40) en déplacement de chaque poinçon (20a, 20b, 20c, 20d, 20e, 20f, 20g). Or, dans cet exemple de réalisation, les moyens de maintien (10) sont composés de deux mors (11, 12) dont l'assemblage définit un logement interne (13) de forme sensiblement complémentaire au tube (100). Aussi, l'un des mors (12) est avantageusement doté ici d'une série d'alésages traversants (41a, 41b, 41c, 41d, 41e, 41f, 41g), formant moyens de guidage (40), qui sont ménagés transversalement par rapport à l'axe du logement interne (13) et qui sont respectivement en mesure de guider le déplacement de chaque poinçon (20a, 20b, 20c, 20d, 20e, 20f, 20g) lors de leur translations respectives (flèche f1).According to a new feature of the invention, the device (1) comprises guide means (40) in displacement of each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g). However, in this embodiment, the holding means (10) are composed of two jaws (11, 12) whose assembly defines an inner housing (13) of substantially complementary shape to the tube (100). Also, one of the jaws (12) is advantageously provided here with a series of through bores (41a, 41b, 41c, 41d, 41e, 41f, 41g), forming guide means (40), which are arranged transversely relative to the axis of the inner housing (13) and which are respectively able to guide the movement of each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g) during their respective translations (arrow f1).
L'invention peut s'appliquer à tout type d'échangeurs thermiques, notamment ceux utilisés dans les véhicules automobiles mais également dans les installations industrielles.The invention can be applied to any type of heat exchanger, in particular those used in motor vehicles but also in industrial installations.
Claims (13)
- Method of manufacturing a heat-exchanger manifold, comprising a step of piercing, without the removal of material, a plurality of openings (102a, 102b, 102c, 102d, 102e, 102f, 102g) through the wall (101) of a tube (100), characterised in that the piercing step consists of:- successively forming each opening (102a, 102b, 102c, 102d, 102e, 102f, 102g) by moving a specific punch (20a, 20b, 20c, 20d, 20e, 20f, 20g), in translation in a direction substantially perpendicular to the axis of the tube (100), between a retracted position in which the active end (21a, 21b, 21c, 21d, 21e, 21f, 21g) of each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g) is placed at a distance from the wall (101) of the tube (100), and a deployed position in which the said active end (21a, 21b, 21c, 21d, 21e, 21f, 21g) is inserted through the said wall (101) of the tube (100)- holding each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g) in the corresponding opening (102a, 102b, 102c, 102d, 103e, 102f, 102g) until the piercing of all the openings (102a, 102b, 102c, 102d, 102e, 102f, 102g) is finished.
- Method of manufacturing according to claim 1, characterised in that the various openings (102a, 102b, 102c, 102d, 102e, 102f, 102g) are produced substantially concomitantly.
- Method of manufacturing according to one of claims 1 or 2, characterised in that each opening (102a, 102b, 102c, 102d, 102e, 102f, 102g) is produced gradually.
- Device (1) for implementing the method of manufacturing according to any one of the preceding claims, characterised in that it comprises:- holding means (10) able to immobilise the tube (100) in a given position,- a plurality of punches (20a, 20b, 20c, 20d, 20e, 20f, 20g) mounted so as to be able to move in translation in a direction substantially perpendicular to the axis of the tube (100), between a retracted position in which the active end (21a, 21b, 21c, 21d, 21e, 21f, 21g) of each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g) is placed at a distance from the wall (101) of the tube (100), and a deployed position in which the said active end (21a, 21b, 21c, 21d, 21e, 21f, 21g) is inserted through the said wall (101) of the tube (100),- an actuation member (30) that is mounted so as to be able to move in translation in a direction perpendicular to the punches (20a, 20b, 20c, 20d, 20e, 20f, 20g) and that comprises an at least partially inclined support surface (31) able to cooperate by a sliding contact with the passive end (22a, 22b, 22c, 22d, 22e, 22f, 22g) of each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g), the translation of the actuation member (30) being able to cause the translation of each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g) between its retracted position and its deployed position.
- Device (1) according to claim 4, characterised in that the support surface (31) of the actuation member (30) comprises at least one active part (32, 33) forming a ramp, inclined with respect to the perpendicular to the direction in which each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g) extends.
- Device (1) according to one of claims 4 or 5, characterised in that the support surface (31) of the actuation member (30) comprises at least one passive part (34), forming a time-delay zone, which is parallel with respect to the perpendicular to the direction in which each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g) extends.
- Device (1) according to one of claims 5 or 6, characterised in that the slope of each active part (32, 33) is rectilinear.
- Device (1) according to any one of claims 5 to 7, characterised in that the slopes of the various active parts (32, 33) are substantially identical.
- Device (1) according to any one of claims 4 to 8, characterised in that the support surface (31) of the actuation member (30) comprises two active parts (32, 33) separated by a passive part (34), the first active part (32) corresponding to a preliminary phase, the passive part (34) corresponding to a time-delay phase and the second active part (33) corresponding to a finishing phase with regard to the production of each opening (102a, 102b, 102c, 102d, 102e, 102f, 102g).
- Device (1) according to any one of claims 4 to 9, characterised in that the passive end (22a, 22b, 22c, 22d, 22e, 22f, 22g) of each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g) has a bevelled shape, the inclination of which corresponds substantially to the slope of each active part (32, 33) of the support surface (31).
- Device (1) according to any one of claims 4 to 10, characterised in that it comprises means (40) of guiding each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g) in movement.
- Device (1) according to any one of claims 4 to 11, characterised in that the holding means (10) comprise at least two jaws (11, 12), the assembly of which defines an internal housing (13) with a shape substantially complementary to the tube (100).
- Device (1) according to claim 12, characterised in that one of the jaws comprises through bores (41a, 41b, 41c, 41d, 41e, 41f, 41g), forming guidance means (40), which are formed transversely with respect to the axis of the internal housing (13) and which are respectively able to guide the movement of each punch (20a, 20b, 20c, 20d, 20e, 20f, 20g).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0413694A FR2879487B1 (en) | 2004-12-21 | 2004-12-21 | METHOD FOR MANUFACTURING A THERMAL EXCHANGER COLLECTOR AND DEVICE FOR CARRYING OUT SAID MANUFACTURING METHOD |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1674170A1 EP1674170A1 (en) | 2006-06-28 |
EP1674170B1 true EP1674170B1 (en) | 2008-04-23 |
Family
ID=34954705
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05292767A Not-in-force EP1674170B1 (en) | 2004-12-21 | 2005-12-21 | Method for making a heat exchanger collector et device for carrying out this method |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1674170B1 (en) |
AT (1) | ATE392963T1 (en) |
DE (1) | DE602005006223D1 (en) |
FR (1) | FR2879487B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012014073B3 (en) * | 2012-07-12 | 2013-08-08 | Modine Manufacturing Co. | Method for making slots in pipe wall, involves piercing set of stampers through pipe wall for producing set of slots, and piercing another set of stampers through pipe wall for producing another set of slots following former set of slots |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011013209A1 (en) | 2011-03-05 | 2012-09-06 | Modine Manufacturing Co. | Manufacturing method for slots and slot tool |
US9308664B2 (en) | 2012-07-12 | 2016-04-12 | Modine Manufacturing Company | System and method for producing apertures in tubes |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3087362A (en) * | 1958-12-04 | 1963-04-30 | Babcock & Wilcox Ltd | Apparatus for extruding lateral nozzles on cylindrical body |
US5193613A (en) * | 1992-06-30 | 1993-03-16 | Wallis Bernard J | Heat exchanger header tube and method of making |
-
2004
- 2004-12-21 FR FR0413694A patent/FR2879487B1/en not_active Expired - Fee Related
-
2005
- 2005-12-21 EP EP05292767A patent/EP1674170B1/en not_active Not-in-force
- 2005-12-21 AT AT05292767T patent/ATE392963T1/en not_active IP Right Cessation
- 2005-12-21 DE DE602005006223T patent/DE602005006223D1/en active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012014073B3 (en) * | 2012-07-12 | 2013-08-08 | Modine Manufacturing Co. | Method for making slots in pipe wall, involves piercing set of stampers through pipe wall for producing set of slots, and piercing another set of stampers through pipe wall for producing another set of slots following former set of slots |
Also Published As
Publication number | Publication date |
---|---|
EP1674170A1 (en) | 2006-06-28 |
DE602005006223D1 (en) | 2008-06-05 |
FR2879487A1 (en) | 2006-06-23 |
ATE392963T1 (en) | 2008-05-15 |
FR2879487B1 (en) | 2008-10-03 |
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