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EP2621792B1 - Molded carrier for moving on an assembly line - Google Patents

Molded carrier for moving on an assembly line Download PDF

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Publication number
EP2621792B1
EP2621792B1 EP11771247.1A EP11771247A EP2621792B1 EP 2621792 B1 EP2621792 B1 EP 2621792B1 EP 11771247 A EP11771247 A EP 11771247A EP 2621792 B1 EP2621792 B1 EP 2621792B1
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EP
European Patent Office
Prior art keywords
carrier
support
inserts
subassembly
moulded
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.)
Active
Application number
EP11771247.1A
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German (de)
French (fr)
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EP2621792A1 (en
Inventor
Stéphane Mazo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PSA Automobiles SA
Original Assignee
Peugeot Citroen Automobiles SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Publication of EP2621792A1 publication Critical patent/EP2621792A1/en
Application granted granted Critical
Publication of EP2621792B1 publication Critical patent/EP2621792B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
    • B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
    • B25H1/0007—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby for engines, motor-vehicles or bicycles

Definitions

  • the present invention relates to a handling support for series assembly lines, as well as a method of manufacturing this handling support, intended in particular for the automotive industry.
  • the assembling lines of subassemblies of motor vehicles can comprise plates receiving supports comprising in the lower part of the positioning means on this plate which is conveyed by the line. at the various assembly stations, and in the upper part of the positioning means supporting and positioning these subsets of motor vehicles.
  • platinum is a standard element that can be used for different types of subsets, and support is a particular element suitable for each type of subset it receives.
  • Such a support can also be used for an assembly operation of the subassembly on the vehicle, for example for assembling a running gear under the vehicle body.
  • the document GB-A-2,313,591 discloses a support made by molding in which the molding has a shape complementary to that of the part to be assembled, which is thus positioned in the support.
  • Reduced weight supports are necessary to facilitate their handling ergonomically, for example when an operator retrieves these supports at the end of the assembly line to change the model to receive another type of subassembly, which represents an operation. repetitive.
  • a reduced cost is important, especially when there are a variety of models to be made for different types of subassemblies, each model being itself produced in a large number of copies to be able to fill the assembly line.
  • plastic supports are generally resistant to corrosion and can be used in industrial washing machines.
  • the present invention is intended in particular to avoid these drawbacks of the prior art, and to provide a simple and economical way to to produce supports comprising precise positioning means.
  • a support made by molding a plastic material, receiving a subassembly to move it on an assembly line. series, comprising first means for positioning this support relative to the assembly line, and second means for positioning the subassembly relative to this support, and further metal inserts integrated into the support during its molding , which are then machined to at least partly produce the positioning means, said support being characterized in that the first positioning means with respect to the assembly line, cooperate with complementary positioning means of a plate which receives this support to move it along the assembly line.
  • An advantage of the support according to the invention is that on the one hand the general shape of this support can be economically obtained by molding the plastic material, and on the other hand machining a number of inserts. limited allows with reduced cost, to achieve on this medium of precise positioning means.
  • the support comprises an insert opening on its two upper and lower faces, used as a reference for performing the different machining of the other inserts.
  • the support comprises two inserts located on the lower face, providing for one a centering, and for the other an orientation around this centering.
  • the upper face comprises bosses made by molding, comprising in the upper part of the inserts.
  • the inserts in the upper part can be used after machining, centering and support for the subassembly.
  • the centering insert may have a threaded bore which receives a centering stud of the subassembly.
  • the upper face may comprise a boss made by molding the plastic material, which performs the orientation of the subassembly around the centering.
  • the support may comprise positioning means adapted to receive a subset of a motor vehicle, such as a motor, a gearbox, a cradle, a wheel support assembly, a front or rear gear, a reservoir fuel or exhaust system.
  • a motor vehicle such as a motor, a gearbox, a cradle, a wheel support assembly, a front or rear gear, a reservoir fuel or exhaust system.
  • the invention also relates to a method of manufacturing a support comprising any one of the preceding features, comprising the following steps, a molding is made of plastic material incorporating metal inserts, a first insert opening on both upper and lower faces of this support is machined by making a bore therethrough, and from the machining of this first insert serving as reference, the machining of the other inserts are made.
  • the figure 1 has a support 1 made by molding a plastic material, having a lower face 2 which is installed on a not shown plate, moved by a handling chain of an assembly line.
  • the lower face 2 comprises holes 4 made during the molding of the support 1, in which are fitted pins fixed on the plate, having an upper end terminating in a conical portion.
  • holes 4 made during the molding of the support 1, in which are fitted pins fixed on the plate, having an upper end terminating in a conical portion.
  • the upper face 10 of the support 1 comprises on its periphery, various bosses 8 located in height, having in their upper parts slopes inclined inwardly, which constitute a cradle receiving a fitted engine of a motor vehicle.
  • the slopes inclined inward facilitate the introduction of the motor between the bosses 8 constituting positioning means, by performing a refocusing of the engine during its descent into the support 1.
  • the upper face 10 of the support 1 further comprises a marking 6, which allows to identify and connect it to the types of subsets that fit on it.
  • the positioning accuracy of the heat engine relative to the plate receiving the support 1 made in this way is of the order of +/- 3mm, which can cause problems.
  • it is generally carried out a precise positioning of the plate, but the positioning differences of the subassembly due to the support 1, that some assembly operations can be difficult or impossible to achieve.
  • the figure 2 has a support 21 comprising a plastic molding, in a first step of manufacturing, which has received during its molding metal inserts 24, 26, 28, 32, 34, having shapes for a good anchoring of its inserts in the material, so as to keep a stability of the set in time.
  • the metal inserts can be made of aluminum alloy or steel, depending on the desired hardness and lightness characteristics.
  • a first central insert 24 is substantially in the center of the support 21, and opens on both upper and lower faces 30 of this support.
  • Two other inserts 26, 28 are on the lower face 22 of the support 21.
  • the upper face 30 includes a centering insert 32 and a support insert 34, arranged at the top of the bosses 36 of the support 21 and receiving the subassembly to be supported.
  • the figure 3 presents a second manufacturing step, wherein the two upper and lower faces 42 of the central insert 24 are machined, and a vertical hole 40 is formed in the center of this insert.
  • the machined faces 42 and the bore 40 will serve as a reference surface for subsequent machining.
  • the figure 4 has a third manufacturing step comprising the machining of the bottom faces of the lower inserts 26, 28. Then from the reference surfaces 40, 42 of the central insert 24 is machined on a lower insert 26 a small diameter bore to form a centering 50, and on the other lower insert 28 an oblong shape 52 whose axis is rotated substantially towards the centering, so as to achieve an orientation with respect to this centering.
  • the centering 50 as well as the oblong shape 52, will serve as precise positioning means of the support 21 on a plate not shown, having corresponding pins which fit in these machining.
  • the third manufacturing step comprises machining the upper faces of the centering inserts 32 and support 34.
  • a vertical drilling and a tapping 54 are then carried out.
  • the figure 5 presents a fourth and last manufacturing step, in which is screwed into the tapping 54 of the centering insert 32, a centering pin 60 having a conical end.
  • the figure 6 presents the support 21 placed on a plate 72, a first pin 74 of this plate being adjusted in the centering 50 of the lower face 22, and another pin 76 in the oblong shape 52. This provides a precise positioning without constraint, of the support 21 relative to the plate 72.
  • a subassembly 70 being mounted is positioned on the support 21, a bore of this subassembly being centered on the pin 60 of the centering insert 32, which comprises a horizontal bearing face regulating the height of this subset. Another part of the subassembly 70 remote from the centering insert 32, rests on the bearing insert 34.
  • the bearing insert 34 surrounds a plastic boss 78, which fits into a sub-drilling. 70 together to achieve an orientation of this subset around the pin 60.
  • the various machining operations carried out on the support 21 are carried out from a drilling jig, which centers itself in the bore 40 of the central insert 24.
  • a numerically controlled machine which carries out the drilling. set of machining.
  • the functional parts for positioning the subassembly 70 with respect to the support 21, and of this support with respect to the plate 72 are machined parts having a good precision which may be of the order of +/- 0 , 1mm, regardless of the dimensional deviations of the molded plastic part which is non-functional, and may have deviations of +/- 3mm.
  • its mass may be less than a value of 10kg.
  • the support 21 is made economically, the surfaces to be machined being very limited.
  • This type of support can advantageously be used to receive on a production line subsets of a motor vehicle, such as for example a motor, a gearbox, a cradle, a wheel support assembly, a front or rear axle , a fuel tank, or an exhaust system.
  • a motor vehicle such as for example a motor, a gearbox, a cradle, a wheel support assembly, a front or rear axle , a fuel tank, or an exhaust system.
  • This type of support can also be used in other areas outside the automobile.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
  • Automatic Assembly (AREA)

Description

La présente invention concerne un support de manutention pour des lignes d'assemblage en série, ainsi qu'un procédé de fabrication de ce support de manutention, destiné en particulier pour l'industrie automobile.The present invention relates to a handling support for series assembly lines, as well as a method of manufacturing this handling support, intended in particular for the automotive industry.

Les lignes d'assemblage de sous-ensembles des véhicules automobiles, comme des moteurs, des boîtes de vitesses ou des trains roulant, peuvent comporter des platines recevant des supports comprenant en partie inférieure des moyens de positionnement sur cette platine qui est convoyée par la ligne aux différents postes d'assemblage, et en partie supérieure des moyens de positionnement supportant et positionnant ces sous-ensembles de véhicules automobiles.The assembling lines of subassemblies of motor vehicles, such as engines, gearboxes or rolling gear, can comprise plates receiving supports comprising in the lower part of the positioning means on this plate which is conveyed by the line. at the various assembly stations, and in the upper part of the positioning means supporting and positioning these subsets of motor vehicles.

Généralement, la platine est un élément standard qui peut être utilisé pour différents types de sous-ensembles, et le support est un élément particulier adapté pour chaque type de sous-ensemble qu'il reçoit.Generally, platinum is a standard element that can be used for different types of subsets, and support is a particular element suitable for each type of subset it receives.

On obtient ainsi la possibilité de déplacer le sous-ensemble de poste en poste, et de le positionner pour réaliser à chacun de ces postes une opération de montage de ce sous-ensemble. On peut aussi utiliser un tel support pour une opération d'assemblage du sous-ensemble sur le véhicule, par exemple pour l'assemblage d'un train roulant sous la caisse du véhicule.This gives the possibility of moving the sub-set station in position, and position to achieve each of these positions a mounting operation of this subset. Such a support can also be used for an assembly operation of the subassembly on the vehicle, for example for assembling a running gear under the vehicle body.

Il est connu de positionner le support sur la platine, en réalisant des perçages sur ce support dans lesquels viennent s'ajuster des pions de la platine, comprenant une extrémité conique pour faciliter l'entrée dans le perçage en réalisant un recentrage de ce support. Le sous-ensemble déposé sur le support, est à son tour positionné par des perçages dans lesquels s'ajustent des pions coniques du support, ou par d'autres moyens comprenant des pentes d'entrée pour faciliter la mise en place et le recentrage.It is known to position the support on the plate, by making holes on the support in which are fitted pins of the plate, comprising a conical end to facilitate entry into the bore by performing a refocusing of the support. The subassembly deposited on the support is in turn positioned by holes in which conical pins of the support are fitted, or by other means Including input slopes to facilitate placement and refocusing.

Il est connu par ailleurs de réaliser les supports par un moulage de matière plastique, pour obtenir de manière économique des supports comportant une masse réduite.It is also known to produce the supports by plastic molding, in order to economically obtain supports having a reduced mass.

Le document GB-A-2 313 591 , sur lequel les caractéristiques du préambule de la revendication 1 sont fondées, divulgue un support réalisé par moulage dans lequel le moulage présente une forme complémentaire de celle de la pièce à assembler, qui vient ainsi se positionner dans le support.The document GB-A-2,313,591 , on which the features of the preamble of claim 1 are based, discloses a support made by molding in which the molding has a shape complementary to that of the part to be assembled, which is thus positioned in the support.

Des supports de masse réduite sont nécessaires pour faciliter leur manutention de manière ergonomique, par exemple quand un opérateur récupère ces supports en fin de ligne d'assemblage pour changer de modèle afin de recevoir un autre type de sous-ensemble, ce qui représente une opération répétitive. Un coût réduit est important, en particulier quand il y a une variété de modèles à réaliser pour différents types de sous-ensembles, chaque modèle étant lui-même produit en un grand nombre d'exemplaires pour pouvoir remplir la ligne d'assemblage.Reduced weight supports are necessary to facilitate their handling ergonomically, for example when an operator retrieves these supports at the end of the assembly line to change the model to receive another type of subassembly, which represents an operation. repetitive. A reduced cost is important, especially when there are a variety of models to be made for different types of subassemblies, each model being itself produced in a large number of copies to be able to fill the assembly line.

De plus, les supports en matière plastique résistent généralement bien à la corrosion, et peuvent passer dans les machines à laver industrielles.In addition, plastic supports are generally resistant to corrosion and can be used in industrial washing machines.

Toutefois, un problème qui se pose avec des supports réalisés par un moulage d'une matière plastique, comprenant des moyens de positionnement obtenus aussi par moulage, est que ces moyens de positionnement ne sont généralement pas très précis. On obtient alors une précision de positionnement du sous-ensemble par rapport à la platine, qui est de l'ordre de +/- 3mm, ce qui peut poser des problèmes lors des différentes opérations sur le sous-ensemble aux postes d'assemblage.However, a problem that arises with supports made by molding a plastic material, including positioning means also obtained by molding, is that these positioning means are generally not very accurate. This gives a positioning accuracy of the subassembly relative to the platen, which is of the order of +/- 3mm, which can cause problems during the various operations on the subset assembly stations.

La présente invention a notamment pour but d'éviter ces inconvénients de la technique antérieure, et de proposer un moyen simple et économique permettant de réaliser des supports comportant des moyens de positionnement précis.The present invention is intended in particular to avoid these drawbacks of the prior art, and to provide a simple and economical way to to produce supports comprising precise positioning means.

Elle propose à cet effet un support réalisé par moulage d'une matière plastique, recevant un sous-ensemble pour le déplacer sur une ligne d'assemblage en série, comportant des premiers moyens de positionnement de ce support par rapport à la ligne d'assemblage, et des deuxième moyens de positionnement du sous-ensemble par rapport à ce support, et en autre des inserts métalliques intégrés dans le support lors de son moulage, qui sont ensuite usinés pour réaliser au moins en partie les moyens de positionnement, ledit support étant caractérisé en ce que les premiers moyens de positionnement par rapport à la ligne d'assemblage, coopèrent avec des moyens de positionnement complémentaires d'une platine qui reçoit ce support pour le déplacer le long de la ligne d'assemblage.It proposes for this purpose a support made by molding a plastic material, receiving a subassembly to move it on an assembly line. series, comprising first means for positioning this support relative to the assembly line, and second means for positioning the subassembly relative to this support, and further metal inserts integrated into the support during its molding , which are then machined to at least partly produce the positioning means, said support being characterized in that the first positioning means with respect to the assembly line, cooperate with complementary positioning means of a plate which receives this support to move it along the assembly line.

Un avantage du support selon l'invention, est que d'une part on peut obtenir de manière économique la forme générale de ce support par le moulage de la matière plastique, et d'autre part l'usinage d'un nombre d'inserts limité permet avec un coût réduit, de réaliser sur ce support des moyens de positionnement précis.An advantage of the support according to the invention is that on the one hand the general shape of this support can be economically obtained by molding the plastic material, and on the other hand machining a number of inserts. limited allows with reduced cost, to achieve on this medium of precise positioning means.

Selon un mode de réalisation, le support comporte un insert débouchant sur ses deux faces supérieure et inférieure, utilisé comme référence pour réaliser les différents usinages des autres inserts.According to one embodiment, the support comprises an insert opening on its two upper and lower faces, used as a reference for performing the different machining of the other inserts.

Avantageusement, le support comporte deux inserts se trouvant sur la face inférieure, réalisant pour l'un un centrage, et pour l'autre une orientation autour de ce centrage.Advantageously, the support comprises two inserts located on the lower face, providing for one a centering, and for the other an orientation around this centering.

Avantageusement, la face supérieure comporte des bossages réalisés par moulage, comprenant en partie haute des inserts.Advantageously, the upper face comprises bosses made by molding, comprising in the upper part of the inserts.

Les inserts en partie haute peuvent permettre de réaliser après usinage, un centrage et un appui pour le sous-ensemble.The inserts in the upper part can be used after machining, centering and support for the subassembly.

L'insert réalisant le centrage, peut comporter un perçage taraudé qui reçoit un pion de centrage du sous-ensemble.The centering insert may have a threaded bore which receives a centering stud of the subassembly.

La face supérieure peut comporter un bossage réalisé par moulage de la matière plastique, qui effectue l'orientation du sous-ensemble autour du centrage.The upper face may comprise a boss made by molding the plastic material, which performs the orientation of the subassembly around the centering.

En particulier, le support peut comporter des moyens de positionnement adaptés pour recevoir un sous-ensemble d'un véhicule automobile, comme un moteur, une boîte de vitesses, un berceau, un ensemble support de roue, un train avant ou arrière, un réservoir de carburant ou un système d'échappement.In particular, the support may comprise positioning means adapted to receive a subset of a motor vehicle, such as a motor, a gearbox, a cradle, a wheel support assembly, a front or rear gear, a reservoir fuel or exhaust system.

L'invention a aussi pour objet un procédé de fabrication d'un support comportant l'une quelconque des caractéristiques précédentes, comprenant les étapes suivantes, un moulage est réalisé en matière plastique en y incorporant des inserts métalliques, un premier insert débouchant sur les deux faces supérieure et inférieure de ce support est usiné en réalisant un perçage le traversant, et à partir de l'usinage de ce premier insert servant de référence, les usinages des autres inserts sont réalisés.The invention also relates to a method of manufacturing a support comprising any one of the preceding features, comprising the following steps, a molding is made of plastic material incorporating metal inserts, a first insert opening on both upper and lower faces of this support is machined by making a bore therethrough, and from the machining of this first insert serving as reference, the machining of the other inserts are made.

L'invention sera mieux comprise et d'autres caractéristiques et avantages apparaîtront plus clairement à la lecture de la description ci-après donnée à titre d'exemple et de manière non limitative, en référence aux dessins annexés dans lesquels :

  • la figure 1 présente en perspective un support d'un moteur thermique, réalisé selon l'art antérieur ;
  • les figures 2 à 5 présentent sur un support vu en coupe passant par un plan vertical, les différentes étapes successives de fabrication de ce support ; et
  • la figure 6 présente une mise en oeuvre de ce support.
The invention will be better understood and other features and advantages will appear more clearly on reading the following description given by way of example and in a nonlimiting manner, with reference to the appended drawings in which:
  • the figure 1 presents in perspective a support of a heat engine, produced according to the prior art;
  • the Figures 2 to 5 present on a support seen in section passing through a vertical plane, the various successive steps of manufacture of this support; and
  • the figure 6 presents an implementation of this support.

La figure 1 présente un support 1 réalisé par moulage d'une matière plastique, comportant une face inférieure 2 qui se pose sur une platine non représentée, déplacée par une chaîne de manutention d'une ligne d'assemblage.The figure 1 has a support 1 made by molding a plastic material, having a lower face 2 which is installed on a not shown plate, moved by a handling chain of an assembly line.

La face inférieure 2 comprend des perçages 4 réalisés lors du moulage du support 1, dans lesquels viennent s'ajuster des pions fixés sur la platine, comportant une extrémité supérieure se terminant par une partie conique. Pour obtenir un positionnement du support 1 sur la platine qui ne génère pas de contrainte, on peut disposer en particulier un pion réalisant un centrage, et un autre pion qui s'ajuste dans une forme oblongue dont l'axe est tourné sensiblement vers ce centrage, pour effectuer une orientation du support autour de ce centrage.The lower face 2 comprises holes 4 made during the molding of the support 1, in which are fitted pins fixed on the plate, having an upper end terminating in a conical portion. To obtain a positioning of the support 1 on the plate which does not generate stress, it is possible in particular to have a pin performing a centering, and another pin which fits in an oblong shape whose axis is turned substantially towards this centering to orient the support around this centering.

La face supérieure 10 du support 1 comprend sur son pourtour, différents bossages 8 se trouvant en hauteur, comportant dans leurs parties supérieures des pentes inclinées vers l'intérieur, qui constituent un berceau recevant de manière ajustée un moteur thermique d'un véhicule automobile. Les pentes inclinées vers l'intérieur facilitent l'introduction du moteur entre les bossages 8 constituant des moyens de positionnement, en réalisant un recentrage de ce moteur lors de sa descente dans le support 1.The upper face 10 of the support 1 comprises on its periphery, various bosses 8 located in height, having in their upper parts slopes inclined inwardly, which constitute a cradle receiving a fitted engine of a motor vehicle. The slopes inclined inward facilitate the introduction of the motor between the bosses 8 constituting positioning means, by performing a refocusing of the engine during its descent into the support 1.

La face supérieure 10 du support 1 comporte de plus un marquage 6, qui permet de l'identifier et de le relier aux types de sous-ensembles qui s'adaptent dessus.The upper face 10 of the support 1 further comprises a marking 6, which allows to identify and connect it to the types of subsets that fit on it.

La précision de positionnement du moteur thermique par rapport à la platine recevant le support 1 réalisé de cette manière, est de l'ordre de +/- 3mm, ce qui peut poser des problèmes. Aux postes d'assemblage de la ligne de manutention, on réalise généralement un positionnement précis de la platine, mais les écarts de positionnement du sous-ensemble dus au support 1, font que certaines opérations d'assemblage peuvent être difficiles ou impossibles à réaliser.The positioning accuracy of the heat engine relative to the plate receiving the support 1 made in this way, is of the order of +/- 3mm, which can cause problems. At the assembly stations of the handling line, it is generally carried out a precise positioning of the plate, but the positioning differences of the subassembly due to the support 1, that some assembly operations can be difficult or impossible to achieve.

La figure 2 présente un support 21 comportant un moulage de matière plastique, dans une première étape de fabrication, qui a reçu lors de son moulage des inserts métalliques 24, 26, 28, 32, 34, comportant des formes permettant un bon ancrage de ses inserts dans la matière, de manière à garder une stabilité de l'ensemble dans le temps.The figure 2 has a support 21 comprising a plastic molding, in a first step of manufacturing, which has received during its molding metal inserts 24, 26, 28, 32, 34, having shapes for a good anchoring of its inserts in the material, so as to keep a stability of the set in time.

Les inserts métalliques peuvent être réalisés en alliage d'aluminium ou en acier, suivant les caractéristiques de dureté et de légèreté recherchées.The metal inserts can be made of aluminum alloy or steel, depending on the desired hardness and lightness characteristics.

Un premier insert central 24 se trouve sensiblement au centre du support 21, et débouche sur les deux faces supérieure 30 et inférieure 22 de ce support. Deux autres inserts 26, 28 se trouvent sur la face inférieure 22 du support 21.A first central insert 24 is substantially in the center of the support 21, and opens on both upper and lower faces 30 of this support. Two other inserts 26, 28 are on the lower face 22 of the support 21.

La face supérieure 30 comporte un insert de centrage 32 et un insert d'appui 34, disposés en haut de bossages 36 du support 21 et recevant le sous-ensemble à supporter.The upper face 30 includes a centering insert 32 and a support insert 34, arranged at the top of the bosses 36 of the support 21 and receiving the subassembly to be supported.

La figure 3 présente une deuxième étape de fabrication, dans laquelle les deux faces supérieure et inférieure 42 de l'insert central 24 sont usinées, et un perçage vertical 40 est réalisé au centre de cet insert. Les faces usinées 42 ainsi que le perçage 40 serviront de surface de référence pour les usinages suivants.The figure 3 presents a second manufacturing step, wherein the two upper and lower faces 42 of the central insert 24 are machined, and a vertical hole 40 is formed in the center of this insert. The machined faces 42 and the bore 40 will serve as a reference surface for subsequent machining.

La figure 4 présente une troisième étape de fabrication comportant l'usinage des faces de dessous des inserts inférieurs 26, 28. Puis à partir des surfaces de référence 40, 42 de l'insert central 24, on usine sur un insert inférieur 26 un perçage de petit diamètre pour former un centrage 50, et sur l'autre insert inférieur 28 une forme oblongue 52 dont l'axe est tourné sensiblement vers le centrage, de manière à réaliser une orientation par rapport à ce centrage.The figure 4 has a third manufacturing step comprising the machining of the bottom faces of the lower inserts 26, 28. Then from the reference surfaces 40, 42 of the central insert 24 is machined on a lower insert 26 a small diameter bore to form a centering 50, and on the other lower insert 28 an oblong shape 52 whose axis is rotated substantially towards the centering, so as to achieve an orientation with respect to this centering.

Le centrage 50 ainsi que la forme oblongue 52, serviront de moyens de positionnement précis du support 21 sur une platine non représentée, comportant des pions correspondant qui s'ajustent dans ces usinages.The centering 50 as well as the oblong shape 52, will serve as precise positioning means of the support 21 on a plate not shown, having corresponding pins which fit in these machining.

La troisième étape de fabrication comporte l'usinage des faces supérieures des inserts de centrage 32 et d'appui 34. Pour l'insert de centrage 32, on réalise ensuite un perçage vertical et un taraudage 54.The third manufacturing step comprises machining the upper faces of the centering inserts 32 and support 34. For the centering insert 32, a vertical drilling and a tapping 54 are then carried out.

La figure 5 présente une quatrième et dernière étape de fabrication, dans laquelle on visse dans le taraudage 54 de l'insert de centrage 32, un pion de centrage 60 comportant une extrémité conique.The figure 5 presents a fourth and last manufacturing step, in which is screwed into the tapping 54 of the centering insert 32, a centering pin 60 having a conical end.

La figure 6 présente le support 21 posé sur une platine 72, un premier pion 74 de cette platine étant ajusté dans le centrage 50 de la face inférieure 22, et un autre pion 76 dans la forme oblongue 52. On réalise ainsi un positionnement précis et sans contrainte, du support 21 par rapport à la platine 72.The figure 6 presents the support 21 placed on a plate 72, a first pin 74 of this plate being adjusted in the centering 50 of the lower face 22, and another pin 76 in the oblong shape 52. This provides a precise positioning without constraint, of the support 21 relative to the plate 72.

Un sous-ensemble 70 en cours de montage est positionné sur le support 21, un perçage de ce sous-ensemble venant se centrer sur le pion 60 de l'insert de centrage 32, qui comporte une face d'appui horizontale réglant la hauteur de ce sous-ensemble. Une autre partie du sous-ensemble 70 éloignée de l'insert de centrage 32, repose sur l'insert d'appui 34. L'insert d'appui 34 entoure un bossage en plastique 78, qui s'ajuste dans un perçage du sous-ensemble 70 pour réaliser une orientation de ce sous-ensemble autour du pion 60.A subassembly 70 being mounted is positioned on the support 21, a bore of this subassembly being centered on the pin 60 of the centering insert 32, which comprises a horizontal bearing face regulating the height of this subset. Another part of the subassembly 70 remote from the centering insert 32, rests on the bearing insert 34. The bearing insert 34 surrounds a plastic boss 78, which fits into a sub-drilling. 70 together to achieve an orientation of this subset around the pin 60.

Avantageusement, les différents usinages réalisés sur le support 21 sont effectués à partir d'un gabarit de perçage, qui se centre dans le perçage 40 de l'insert central 24. En variante, on peut utiliser une machine à commande numérique qui réalise l'ensemble des usinages.Advantageously, the various machining operations carried out on the support 21 are carried out from a drilling jig, which centers itself in the bore 40 of the central insert 24. In a variant, it is possible to use a numerically controlled machine which carries out the drilling. set of machining.

On notera que les parties fonctionnelles de positionnement du sous-ensemble 70 par rapport au support 21, et de ce support par rapport à la platine 72, sont des parties usinées comportant une bonne précision qui peut être de l'ordre de +/- 0,1mm, quels que soient les écarts dimensionnels de la partie moulée en matière plastique qui est non fonctionnelle, et peut comporter des écarts de +/- 3mm.It will be noted that the functional parts for positioning the subassembly 70 with respect to the support 21, and of this support with respect to the plate 72, are machined parts having a good precision which may be of the order of +/- 0 , 1mm, regardless of the dimensional deviations of the molded plastic part which is non-functional, and may have deviations of +/- 3mm.

On obtient ainsi un support 21 léger. En particulier pour recevoir un sous-ensemble 70 destiné aux véhicules automobiles, sa masse peut être inférieure à une valeur de 10kg. De plus, ce support 21 est réalisé de manière économique, les surfaces à usiner étant très limitées.This gives a light support 21. In particular to receive a subset 70 for motor vehicles, its mass may be less than a value of 10kg. In addition, the support 21 is made economically, the surfaces to be machined being very limited.

On peut avantageusement utiliser ce type de support pour recevoir sur une ligne de production des sous-ensembles d'un véhicule automobile, comme par exemple un moteur, une boîte de vitesses, un berceau, un ensemble support de roue, un train avant ou arrière, un réservoir de carburant, ou un système d'échappement. On peut aussi utiliser ce type de support dans d'autres domaines en dehors de l'automobile.This type of support can advantageously be used to receive on a production line subsets of a motor vehicle, such as for example a motor, a gearbox, a cradle, a wheel support assembly, a front or rear axle , a fuel tank, or an exhaust system. This type of support can also be used in other areas outside the automobile.

Claims (9)

  1. A carrier produced by moulding a plastic material, which receives a subassembly (70) for moving same on a serial assembly line, comprising first means for positioning said carrier with respect to the assembly line, and second means for positioning the subassembly relative to said carrier, said carrier further comprising metal inserts (24, 26, 28, 32, 34) built into the carrier (21) during the moulding thereof, wherein said inserts are then machined so as to at least partially produce the positioning means, said carrier being characterized in that the first positioning means (26, 28) with respect to the assembly line cooperate with complementary positioning means (74, 76) of a plate (72) which receives this carrier for moving it along the assembly line.
  2. The moulded carrier according to Claim 1, characterized in that it comprises an insert (24) emerging on its two upper (30) and lower (22) faces, used as reference for realizing the different machinings of the other inserts (26, 28, 32, 34).
  3. The moulded carrier according to any one of the preceding claims, characterized in that it comprises two inserts (26, 28) situated on the lower face (22), realizing for the one (26) a centring, and for the other (28) an orientation around this centring.
  4. The moulded carrier according to any one of the preceding claims, characterized in that its upper face (30) comprises moulded bosses (36), including inserts (32, 34) at the top part.
  5. The moulded carrier according to Claim 4, characterized in that the inserts at the top part permit, after machining, a centring (32) and a support (34) for the subassembly (70) to be realized.
  6. The moulded carrier according to Claim 5, characterized in that the insert realizing the centring (32) comprises a threaded hole which receives a centring pin (60) of the subassembly (70).
  7. The moulded carrier according to Claim 5 or 6, characterized in that its upper face (30) comprises a boss (78) produced by moulding plastic material, which carries out the orientation of the subassembly (70) around the centring (32).
  8. The moulded carrier according to any one of the preceding claims, characterized in that it comprises positioning means (32, 34) adapted to receive a subassembly of a motor vehicle, such as an engine, a gearbox, a subframe, a wheel support assembly, a front or rear end, a fuel tank or an exhaust system.
  9. A method for the manufacture of a carrier (21) according to any one of the preceding claims, characterized in that it includes the following steps, a moulding is produced from plastic material, incorporating therein metal inserts (24, 26, 28, 32, 34), a first insert (24) emerging on the two upper (30) and lower (22) faces of this carrier is machined by realizing a hole (40) passing through it, and from the machining of this first insert (24) serving as a reference, the machinings of the other inserts (26, 28, 32, 34) are realized.
EP11771247.1A 2010-09-28 2011-09-21 Molded carrier for moving on an assembly line Active EP2621792B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1057804A FR2965242B1 (en) 2010-09-28 2010-09-28 SUPPORT MADE BY MOLDING FOR DISPLACEMENTS ON AN ASSEMBLY LINE
PCT/FR2011/052178 WO2012045943A1 (en) 2010-09-28 2011-09-21 Molded carrier for moving on an assembly line

Publications (2)

Publication Number Publication Date
EP2621792A1 EP2621792A1 (en) 2013-08-07
EP2621792B1 true EP2621792B1 (en) 2015-03-04

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Application Number Title Priority Date Filing Date
EP11771247.1A Active EP2621792B1 (en) 2010-09-28 2011-09-21 Molded carrier for moving on an assembly line

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EP (1) EP2621792B1 (en)
CN (1) CN103153767B (en)
FR (1) FR2965242B1 (en)
WO (1) WO2012045943A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103523117B (en) * 2013-10-16 2016-01-20 山东亿嘉现代农业有限公司 A kind of big-and-middle horsepower tractor chassis layered water flood well and point wiring
FR3098784B1 (en) * 2019-07-19 2021-09-17 Renault Sas Tool for indexing an engine flywheel and torque converter of a gearbox of a motor vehicle and associated indexing method

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3699901A (en) * 1970-07-23 1972-10-24 Oakland Plastics Corp Pallet
BE794405Q (en) * 1971-07-17 1973-05-16 Nania Benvenuto PROCESS FOR MANUFACTURING A PLASTIC MATERIAL PLATFORM AND DEVICE FOR ITS IMPLEMENTATION
JPS5931448B2 (en) * 1977-07-05 1984-08-02 日立電線株式会社 Method of embedding metal fittings in plastic insulation
US5101964A (en) * 1989-07-24 1992-04-07 Douglas & Lomason Company Transportation pallet system
GB2313591A (en) * 1996-06-01 1997-12-03 Rover Group Vehicle assembly apparatus
JP2001157929A (en) * 1999-11-29 2001-06-12 Daihatsu Motor Co Ltd Work assembly line
US20070266910A1 (en) * 2006-05-16 2007-11-22 Shan Industries, Llc Molded pallet having integral and structurally improved tie down points
CN102046481A (en) * 2008-03-28 2011-05-04 欧瑞亚轴环有限责任公司 Composite stackable pallet construction

Also Published As

Publication number Publication date
WO2012045943A1 (en) 2012-04-12
FR2965242B1 (en) 2014-02-28
FR2965242A1 (en) 2012-03-30
CN103153767B (en) 2016-07-06
CN103153767A (en) 2013-06-12
EP2621792A1 (en) 2013-08-07

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