EP3016757B1 - Method for producing a fixing tab in a sheet of metal and sheet of metal comprising such a fixing tab - Google Patents

Method for producing a fixing tab in a sheet of metal and sheet of metal comprising such a fixing tab Download PDF

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Publication number
EP3016757B1
EP3016757B1 EP14735611.7A EP14735611A EP3016757B1 EP 3016757 B1 EP3016757 B1 EP 3016757B1 EP 14735611 A EP14735611 A EP 14735611A EP 3016757 B1 EP3016757 B1 EP 3016757B1
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EP
European Patent Office
Prior art keywords
metal
sheet
fixing tab
strip
cutting
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EP14735611.7A
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German (de)
French (fr)
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EP3016757A1 (en
Inventor
Bertrand FREMONT
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PSA Automobiles SA
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Peugeot Citroen Automobiles SA
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Publication of EP3016757A1 publication Critical patent/EP3016757A1/en
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Classifications

    • 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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • B21D22/206—Deep-drawing articles from a strip in several steps, the articles being coherent with the strip during the operation
    • 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
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/10—Incompletely punching in such a manner that the parts are still coherent with the work
    • 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
    • B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
    • B21D35/001—Shaping combined with punching, e.g. stamping and perforating
    • 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
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool

Definitions

  • the invention relates to a method for producing a fastening tab formed in a sheet metal plate according to the preamble of claim 1. It also relates to a sheet metal plate comprising such a fastening tab, according to the preamble of claim 3. .
  • the sheet metal plate comprises a fastening tab which forms, on at least one section of the sheet metal plate, a temporary connection between a first thinned portion of the section forming a linear strip substantially aligned in the direction of travel of the sheet metal strip and at least one part being formed, formed in a second part of this section.
  • the sheet metal plate comprises two linear strips which frame the parts to be formed. Fixing lugs connect the parts to be formed to two linear bands. Such linear strips serve to guide the part to be formed both laterally and in the direction of travel. To do this, the linear strips generally comprise openings collaborating with drive means for scrolling the parts being formed from one press to another press. At least one of these fastening tabs has a length greater than the distance separating the part to be formed from the linear strip to which it is attached, making it possible to absorb the movements of the part to be formed when the latter is shaped in the different presses.
  • fastening tabs have a flat "S" shape and are obtained by a cutting operation of the sheet metal plate.
  • This form of the fastening tab imposes a distance between the workpiece and the corresponding band at least equal to the width of the bracket and more generally at least twice this width to allow sufficient mobility of the workpiece.
  • the width of the tab must also be reduced, but it may then be too soupy to maintain the part to be formed in a good position, risk of becoming too fragile and breaking during the various processes of cutting and stamping.
  • An object of the invention is to have a sheet metal plate having a fastening tab which is both resistant and which allows a good guidance of the workpiece to be formed, while allowing to reduce the distance separating the workpiece from forming. the strip on which this piece is secured by means of the bracket.
  • the object of the invention is also to have a method of making such a bracket, which is simple and reliable to implement, without increasing the production cost of the parts thus formed.
  • the cutting step and the stamping deformation step of the fastening tab is done by means of the same press.
  • the present invention also relates to a sheet metal plate for scrolling along a series of presses to form, by a succession of cutting and drawing steps, parts, comprising on at least one section a first thinned portion forming a linear strip substantially aligned in the running direction of the sheet metal strip, at least one part being formed, formed in a second part of this section and a fixing tab forming a temporary connection between the linear strip and the piece of sheet metal.
  • the fixing lug comprises at least one portion extending projecting from the upper faces or the lower face of the sheet metal plate.
  • the fastening tab is made of material with the linear strip and with the part being formed.
  • the projecting portion of the fastening lug has a substantially arcuate profile.
  • such a sheet metal plate comprises a fixing lug made by means of a production method as described above.
  • the figure 1 represents a simplified partial view, from above, of a chain of cuttings and stampings 1 using a fastening lug 2 according to the invention.
  • the chain 1 consists of several presses 3 which mark the path of a sheet metal plate 4, operating on a succession of steps of cutting and stamping to arrive at the end of the chain 1, to finished parts 5.
  • a first cut and a first stamping are formed making it possible to have two first shapes 41 of two final pieces 5.
  • this first step is also formed the fixing lug 2 and a central band 43 serving as a framework.
  • the first forms 41 are brought under a second press 3b, making another cutting and stamping operation, arriving at two second forms 42 approaching the final pieces 5.
  • Each second form 42 is always attached to the central strip 43 by a fixing lug 2.
  • the second shapes 42 are brought under a third press 3c, making a cutting and stamping operation, from which final pieces 5 emerge.
  • the figure 2 is a partial view, in perspective, of the chain of cuttings and stampings 1 at the location of two fastening lugs 2 connecting the central strip 43 to two first form 41.
  • Each fastening lug 2 comprises a central portion 21 projecting from the upper face of the sheet metal plate 4, which has a profile in an arc.
  • the fastening lug 2 thus has a length greater than the distance separating the first form 41 with central band 43, allowing the fastening lug 2 to be deformed elastically in the direction of its length. In the direction of its width, the fixing lug 2 has sufficient rigidity to hold the first form 41 in position.
  • each first form 41 while remaining positioned in the plane defined by the sheet metal plate 4, can to move the central band 43 away from or closer to the functions of the stresses undergone during the passage in the various presses, while remaining attached to the central band 43 by means of the fixing lug 2.
  • a first step is to cut simultaneously in a first section of the sheet metal plate 4, the central strip 43, first two forms 41 and the corresponding fixing lugs 2.
  • the first press 3a deforms the fixing lugs 2 to lengthen them, forming the central portion 21 of the fixing lug 2.
  • the step of cutting and the stamping step can be done by the first press 3a or by means of two successive presses.
  • the number and arrangement of the presses 3 is only an example and can be modified without departing from the scope of the invention.
  • each press 3 successively forms two parts, but the number of parts formed by each press can vary.
  • the number and the arrangement of the fixing lugs 2 may also vary according to the shape of the parts to be formed. It is the same of the guide strip, which is central in this example, but which can be equally well arranged differently with respect to the parts to be formed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
  • Clamps And Clips (AREA)

Description

L'invention concerne un procédé de réalisation d'une patte de fixation formée dans une plaque de tôle, selon le préambule de la revendication 1. Elle concerne aussi une plaque de tôle comportant une telle patte de fixation, selon le préambule de la revendication 3.The invention relates to a method for producing a fastening tab formed in a sheet metal plate according to the preamble of claim 1. It also relates to a sheet metal plate comprising such a fastening tab, according to the preamble of claim 3. .

Elle concerne plus particulièrement une plaque de tôle destinée à défiler le long d'une succession de presses pour former, par une succession d'étapes de découpages et d'emboutissages, des pièces. La plaque de tôle comporte une patte de fixation qui forme, sur au moins un tronçon de la plaque de tôle, une liaison temporaire entre une première partie amincie du tronçon formant une bande linéaire sensiblement alignée dans le sens de défilement de la bande de tôle et au moins une pièces en cours de formation, formée dans une deuxième partie de ce tronçon.It relates more particularly to a sheet metal plate for scrolling along a succession of presses to form, by a succession of cutting and drawing steps, parts. The sheet metal plate comprises a fastening tab which forms, on at least one section of the sheet metal plate, a temporary connection between a first thinned portion of the section forming a linear strip substantially aligned in the direction of travel of the sheet metal strip and at least one part being formed, formed in a second part of this section.

Une telle patte de fixation est par exemple décrite dans le document FR 2 979 265 . La technique de découpage et d'emboutissage décrite dans ce document est plus généralement appelée outil à suivre. Dans ce document, la plaque de tôle comporte deux bandes linéaires qui encadrent les pièces à former. Des pattes de fixation relient les pièces à former à deux bandes linéaires. De telles bandes linéaires servent à guider aussi bien latéralement que dans le sens de défilement la pièce à former. Pour ce faire, les bandes linéaires comportent généralement des ouvertures collaborant avec des moyens d'entrainement pour faire défiler les pièces en cours de formation d'une presse vers une autre presse. Au moins une de ces pattes de fixation présente une longueur supérieure à la distance séparant la pièce à former à la bande linéaire sur laquelle elle est fixée, permettant d'absorber les déplacements de la pièce à former lorsque celle-ci est mise en forme dans les différentes presses. Dans l'état de la technique, de telles pattes de fixation présentent une forme plane en « S » et sont obtenues par une opération de découpage de la plaque de tôle. Cette forme de la patte de fixation impose une distance entre la pièce à former et la bande correspondante au moins égale à la largeur de la patte de fixation et plus généralement au moins égale au double de cette largueur pour permettre une mobilité suffisante de la pièce à former. Lorsque l'on veut réduire cette distance entre la pièce à former et la bande correspondante, la largeur de la patte doit aussi être réduite, mais celle-ci risque alors d'être trop soupe pour maintenir la pièce à former dans une bonne position, risquant de devenir trop fragile et de se rompre au cours des différents processus de découpages et d'emboutissages.Such a bracket is for example described in the document FR 2 979 265 . The cutting and stamping technique described in this document is more generally called a tool to follow. In this document, the sheet metal plate comprises two linear strips which frame the parts to be formed. Fixing lugs connect the parts to be formed to two linear bands. Such linear strips serve to guide the part to be formed both laterally and in the direction of travel. To do this, the linear strips generally comprise openings collaborating with drive means for scrolling the parts being formed from one press to another press. At least one of these fastening tabs has a length greater than the distance separating the part to be formed from the linear strip to which it is attached, making it possible to absorb the movements of the part to be formed when the latter is shaped in the different presses. In the state of the art, such fastening tabs have a flat "S" shape and are obtained by a cutting operation of the sheet metal plate. This form of the fastening tab imposes a distance between the workpiece and the corresponding band at least equal to the width of the bracket and more generally at least twice this width to allow sufficient mobility of the workpiece. When it is desired to reduce this distance between the part to be formed and the corresponding band, the width of the tab must also be reduced, but it may then be too soupy to maintain the part to be formed in a good position, risk of becoming too fragile and breaking during the various processes of cutting and stamping.

Un but de l'invention est d'avoir une plaque de tôle comportant une patte de fixation qui soit à la fois résistante et qui permette un bon guidage de la pièce à former, tout en permettant de réduire la distance séparant la pièce à former de la bande sur laquelle cette pièce est solidarisée au moyen de la patte de fixation. Le but de l'invention est aussi d'avoir un procédé de réalisation d'une telle patte de fixation, qui soit simple et fiable à mettre en oeuvre, sans augmenter le coût de production des pièces ainsi formées.An object of the invention is to have a sheet metal plate having a fastening tab which is both resistant and which allows a good guidance of the workpiece to be formed, while allowing to reduce the distance separating the workpiece from forming. the strip on which this piece is secured by means of the bracket. The object of the invention is also to have a method of making such a bracket, which is simple and reliable to implement, without increasing the production cost of the parts thus formed.

A cette fin, il est prévu, selon l'invention, un procédé de réalisation d'une patte de fixation formée dans une plaque de tôle avec les étapes de la revendication 1. La plaque de tôle est destinée à défiler le long d'une succession de presses pour former, par une succession d'étapes de découpages et d'emboutissages, des pièces. La patte de fixation forme une liaison temporaire, sur au moins un tronçon de la plaque de tôle, entre une première partie amincie du tronçon, formant une bande linéaire sensiblement alignée dans le sens de défilement de la bande de tôle et au moins une pièces en cours de formation, formée dans une deuxième partie du tronçon, caractérisé en ce que:

  • une première étape du procédé consistant à découper simultanément dans le tronçon de la bande de tôle, au moyen d'une des presses, la bande linéaire, au moins la pièce en cours de formation et la patte de fixation reliant la pièce à la bande ; et
  • une deuxième étape consistant à déformer, au moyen d'une des presses, la patte de fixation pour l'allonger, une partie de la patte de fixation faisant saillie d'au moins la face supérieure ou la face inférieure de la plaque de tôle.
To this end, there is provided, according to the invention, a method of producing a fastening tab formed in a sheet metal plate with the steps of claim 1. The sheet metal plate is intended to scroll along a succession of presses to form, by a succession of steps of cutting and stamping, parts. The fixing lug forms a temporary connection, on at least one section of the sheet metal plate, between a first thinner portion of the section, forming a linear strip substantially aligned in the direction of travel of the sheet metal strip and at least one part made of sheet metal. training course, formed in a second part of the section, characterized in that:
  • a first step of the method of cutting simultaneously in the section of the sheet metal strip, by means of one of the presses, the linear strip, at least the piece being formed and the fixing lug connecting the piece to the strip; and
  • a second step of deforming, by means of one of the presses, the fixing lug to lengthen it, a part of the leg of fastener projecting from at least the upper or lower face of the sheet metal plate.

Dans un mode de réalisation préférentiel, l'étape de découpage et l'étape de déformation par emboutissage de la patte de fixation se fait au moyen d'une même presse.In a preferred embodiment, the cutting step and the stamping deformation step of the fastening tab is done by means of the same press.

La présente invention concerne aussi une plaque de tôle destinée à défiler le long d'une succession de presses pour former, par une succession d'étapes de découpages et d'emboutissages, des pièces, comportant sur au moins un tronçon une première partie amincie formant une bande linéaire sensiblement alignée dans le sens de défilement de la bande de tôle, au moins une pièce en cours de formation, formée dans une deuxième partie de ce tronçon et une patte de fixation formant une liaison temporaire entre la bande linéaire et la pièce en cours de formation, caractérisée en ce que la patte de fixation comporte au moins une partie se prolongeant en saillie de la faces supérieure ou de la face inférieure de la plaque de tôle.The present invention also relates to a sheet metal plate for scrolling along a series of presses to form, by a succession of cutting and drawing steps, parts, comprising on at least one section a first thinned portion forming a linear strip substantially aligned in the running direction of the sheet metal strip, at least one part being formed, formed in a second part of this section and a fixing tab forming a temporary connection between the linear strip and the piece of sheet metal. training course, characterized in that the fixing lug comprises at least one portion extending projecting from the upper faces or the lower face of the sheet metal plate.

Selon une première caractéristique préférée de l'invention, la patte de fixation viens de matière avec la bande linéaire et avec la pièce en cours de formation.According to a first preferred feature of the invention, the fastening tab is made of material with the linear strip and with the part being formed.

Selon une deuxième caractéristique préférée de l'invention, la partie en saillie de la patte de fixation présente un profil sensiblement en arc de cercle.According to a second preferred feature of the invention, the projecting portion of the fastening lug has a substantially arcuate profile.

Enfin, selon une autre caractéristique préférée de l'invention, une telle plaque de tôle comporte une patte de fixation réalisée au moyen d'un procédé de réalisation tel que décrit précédemment.Finally, according to another preferred feature of the invention, such a sheet metal plate comprises a fixing lug made by means of a production method as described above.

D'autres caractéristiques et avantages de l'invention apparaitront lors de la description ci-après d'un mode de réalisation du procédé selon l'invention. Aux dessins annexés :

  • La figure 1 représente une vue partielle simplifiée, de dessus, d'une chaîne de découpages et d'emboutissages utilisant une patte de fixation selon l'invention ; et
  • La figure 2 représente une vue partielle, en perspective, de deux pattes de fixation reliant une bande centrale à deux premières forme de pièces obtenues par une telle chaîne de découpages et d'emboutissages.
Other characteristics and advantages of the invention will appear in the following description of an embodiment of the method according to the invention. In the accompanying drawings:
  • The figure 1 represents a simplified partial view, from above, of a chain of cuttings and stampings using a fastening tab according to the invention; and
  • The figure 2 is a partial view, in perspective, of two fixing lugs connecting a central strip to two first form of parts obtained by such a chain of cuttings and stampings.

La description qui va suivre est faite dans le cadre d'une chaîne de découpages et d'emboutissages du type outil à suivre, agencé de sorte à produire une pièce découpée et déformée par une succession de presses. Toutefois, l'invention décrite dans ces conditions est adaptable à d'autres types de chaînes de découpages et d'emboutissages permettant de produire une pièce selon d'autres techniques de découpages et d'emboutissages.The following description is made in the context of a chain of cutting and stamping tool type to follow, arranged to produce a piece cut and deformed by a succession of presses. However, the invention described under these conditions is adaptable to other types of cutting and drawing lines for producing a part according to other cutting and drawing techniques.

La figure 1 représente une vue partielle simplifiée, de dessus, d'une chaine de découpages et d'emboutissages 1 utilisant une patte de fixation 2 selon l'invention. La chaine 1 se compose de plusieurs presses 3 qui jalonnent le parcourt d'une plaque de tôle 4, opérant dessus une succession d'étapes de découpages et d'emboutissages pour arriver, en bout de la chaîne 1, à des pièces finies 5. Lors de la première opération de découpage et d'emboutissage par la première presse 3a, dans un tronçon de la plaque de tôle 4, est formée une première découpe et un premier emboutissage permettant d'avoir deux premières formes 41 de deux pièces finales 5. Lors de cette première étape est aussi formée la patte de fixation 2 et une bande centrale 43 servant d'ossature. Une fois ce premier découpage et emboutissage d'effectué, guidée par la bande centrale 43, les premières formes 41 sont amenées sous une deuxième presse 3b, faisant une autre opération de découpage et d'emboutissage, arrivant à deux secondes formes 42 se rapprochant des pièces finales 5. Chaque seconde forme 42 est toujours rattachée à la bande centrale 43 par une patte de fixation 2. Une fois ce deuxième découpage et emboutissage d'effectué, toujours guidée par la bande centrale 43, les secondes formes 42 sont amenées sous une troisième presse 3c, faisant une opération de découpage et d'emboutissage, de laquelle ressortent des pièces finales 5.The figure 1 represents a simplified partial view, from above, of a chain of cuttings and stampings 1 using a fastening lug 2 according to the invention. The chain 1 consists of several presses 3 which mark the path of a sheet metal plate 4, operating on a succession of steps of cutting and stamping to arrive at the end of the chain 1, to finished parts 5. During the first cutting and stamping operation by the first press 3a, in a section of the sheet metal plate 4, a first cut and a first stamping are formed making it possible to have two first shapes 41 of two final pieces 5. During this first step is also formed the fixing lug 2 and a central band 43 serving as a framework. Once this first cutting and stamping is done, guided by the central band 43, the first forms 41 are brought under a second press 3b, making another cutting and stamping operation, arriving at two second forms 42 approaching the final pieces 5. Each second form 42 is always attached to the central strip 43 by a fixing lug 2. Once this second cutting and stamping is done, always guided by the central strip 43, the second shapes 42 are brought under a third press 3c, making a cutting and stamping operation, from which final pieces 5 emerge.

La figure 2 représente une vue partielle, en perspective, de la chaîne de découpages et d'emboutissages 1 à l'emplacement de deux pattes de fixation 2 reliant la bande centrale 43 à deux premières forme 41. Sur cette figure est plus particulièrement visible la forme de chacune des deux pattes de fixation 2. Chaque patte de fixation 2 comporte une partie 21 centrale se prolongeant en saillie de la face supérieure de la plaque de tôle 4, qui présente un profil en arc de cercle. La patte de fixation 2 présente donc une longueur supérieure à la distance séparant la première forme 41 à bande centrale 43, permettant à la patte de fixation 2 de pouvoir se déformer élastiquement dans le sens de sa longueur. Dans le sens de sa largeur, la patte de fixation 2 présente une rigidité suffisante pour maintenir en position la première forme 41. Ainsi, chaque première forme 41, tout en restant positionnée dans le plan défini par la plaque de tôle 4, peut s'éloigner ou se rapprocher la bande centrale 43 en fonctions des contraintes subies lors du passage dans les différentes presses, tout en restant solidarisée à la bande centrale 43 au moyen de la patte de fixation 2.The figure 2 is a partial view, in perspective, of the chain of cuttings and stampings 1 at the location of two fastening lugs 2 connecting the central strip 43 to two first form 41. In this figure is more particularly visible the shape of each two fastening lugs 2. Each fastening lug 2 comprises a central portion 21 projecting from the upper face of the sheet metal plate 4, which has a profile in an arc. The fastening lug 2 thus has a length greater than the distance separating the first form 41 with central band 43, allowing the fastening lug 2 to be deformed elastically in the direction of its length. In the direction of its width, the fixing lug 2 has sufficient rigidity to hold the first form 41 in position. Thus, each first form 41, while remaining positioned in the plane defined by the sheet metal plate 4, can to move the central band 43 away from or closer to the functions of the stresses undergone during the passage in the various presses, while remaining attached to the central band 43 by means of the fixing lug 2.

Pour que les pattes de fixation 2 présentent une telle forme, lors du passage de la bande de tôle 4 dans la première presse 3a, une première étape consiste à découper simultanément dans un premier tronçon de la plaque de tôle 4, la bande centrale 43, deux premières formes 41 et les pattes de fixation 2 correspondantes. La première presse 3a, durant la même étape, déforme les pattes de fixation 2 pour les allonger, formant la partie centrale 21 de la patte de fixation 2. Suivant les commodités du procédé de réalisation de cette patte de fixation 2, l'étape de découpage et l'étape d'emboutissage peuvent soit se faire par la première presse 3a soit au moyen de deux presses successives. Bien entendu, le nombre et la disposition des presses 3 n'est qu'à titre d'exemple et peut être modifié sans sortir du cadre de l'invention. De même, dans l'exemple tel que présenté, chaque presse 3 forme successivement deux pièces, mais le nombre de pièces formé par chaque presse peut varier. Le nombre et la disposition des pattes de fixation 2 peuvent aussi varier suivant la forme des pièces à former. Il en est de même de la bande de guidage, qui est central dans cet exemple, mais qui peut être tout aussi bien disposée différemment par rapport aux pièces à former.So that the fastening lugs 2 have such a shape, during the passage of the sheet metal strip 4 in the first press 3a, a first step is to cut simultaneously in a first section of the sheet metal plate 4, the central strip 43, first two forms 41 and the corresponding fixing lugs 2. The first press 3a, during the same step, deforms the fixing lugs 2 to lengthen them, forming the central portion 21 of the fixing lug 2. According to the conveniences of the method of producing this lug 2, the step of cutting and the stamping step can be done by the first press 3a or by means of two successive presses. Of course, the number and arrangement of the presses 3 is only an example and can be modified without departing from the scope of the invention. Similarly, in the example as presented, each press 3 successively forms two parts, but the number of parts formed by each press can vary. The number and the arrangement of the fixing lugs 2 may also vary according to the shape of the parts to be formed. It is the same of the guide strip, which is central in this example, but which can be equally well arranged differently with respect to the parts to be formed.

Claims (6)

  1. A method for producing a fixing tab (2) formed in a sheet of metal (4), said sheet of metal (4) being intended to run along a succession of presses (3) so as to form components (5) by way of a succession of cutting and stamping steps, the fixing tab (2) forms a temporary connection on at least a portion of the sheet of metal (4), between a first, thinned part (43) of said portion forming a linear strip that is substantially aligned in the running direction of the sheet of metal (4), and at least one component (41, 42) which is being formed and is formed in a second part of said portion, characterized in that:
    • a first step of the method consisting in cutting simultaneously in the portion of the strip of metal (4), by means of one of the presses (3a), the linear strip (43), at least the component (41, 42) which is being formed and the fixing tab (2) connecting said component (41, 42) to said strip (43); and
    • a second step consisting in deforming by stamping, by means of one of the presses (3a), the fixing tab (2) to lengthen it, a part (21) of the fixing tab (2) projecting from at least the upper upper face or the lower face of the sheet of metal (4).
  2. The method for producing a fixing tab (2) according to the preceding claim, characterized in that the cutting step and the step of deformation by stamping of the fixing tab (2) are carried out by means of the same press (3a).
  3. A sheet of metal (4) intended to run along a succession of presses (3) so as to form components (5) by way of a succession of cutting and stamping steps, comprising on at least a portion a first, thinned part (43) forming a linear strip that is substantially aligned in the running direction of the strip of metal (4), at least one component (41, 42) which is being formed, formed in a second part of said portion, and a fixing tab (2) forming a temporary connection between the linear strip (43) and the part (41, 42) which is being formed, characterized in that the fixing tab (2) comprises at least one part (21) extending in a projecting manner from the upper face or from the lower face of the sheet of metal (4).
  4. The sheet of metal (4) according to Claim 3, characterized in that the fixing tab (2) is integral with the linear strip (43) and with the part (41, 42) which is being formed.
  5. The sheet of metal (4) according to Claim 3 or 4, characterized in that the projecting part (21) of the fixing tab (2) has a profile substantially having the shape of an arc of a circle.
  6. The sheet of metal (4) according to any one of Claims 3 to 5, characterized in that said fixing tab (2) is produced by means of a production method according to Claim 1 or 2.
EP14735611.7A 2013-07-02 2014-06-11 Method for producing a fixing tab in a sheet of metal and sheet of metal comprising such a fixing tab Active EP3016757B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1356463A FR3008009B1 (en) 2013-07-02 2013-07-02 METHOD OF MAKING A FASTENING LEG IN A SHEET PLATE AND SHEET PLATE COMPRISING SUCH A FASTENING LEG
PCT/FR2014/051410 WO2015001217A1 (en) 2013-07-02 2014-06-11 Method for producing a fixing tab in a sheet of metal and sheet of metal comprising such a fixing tab

Publications (2)

Publication Number Publication Date
EP3016757A1 EP3016757A1 (en) 2016-05-11
EP3016757B1 true EP3016757B1 (en) 2017-04-26

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Application Number Title Priority Date Filing Date
EP14735611.7A Active EP3016757B1 (en) 2013-07-02 2014-06-11 Method for producing a fixing tab in a sheet of metal and sheet of metal comprising such a fixing tab

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EP (1) EP3016757B1 (en)
FR (1) FR3008009B1 (en)
WO (1) WO2015001217A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3088095B1 (en) * 2015-04-29 2019-07-17 TRUMPF Werkzeugmaschinen GmbH + Co. KG Method for processing panel-shaped workpieces
FR3075076B1 (en) * 2017-12-20 2020-08-21 Psa Automobiles Sa STAMPING PROCESS FOR A SHEET BLANK TO FORM AT LEAST ONE EMBEDDED PART WHICH INCLUDES FIXING LEGS
CN109647974B (en) * 2018-12-17 2020-09-11 山东时风（集团）有限责任公司 Multi-station continuous stamping production line for automobile parts and stamping process thereof
CN111482509B (en) * 2020-03-26 2021-07-30 南阳浩帆车辆部件有限公司 Machining system and machining method of dragging seat assembly

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61103627A (en) * 1984-10-27 1986-05-22 Toyota Motor Corp Press forming method of automatic progressive die
JPS62203626A (en) * 1986-02-28 1987-09-08 Toyota Motor Corp Blank material feeding method for progressive press die
FR2956048B1 (en) * 2010-02-05 2012-06-01 Peugeot Citroen Automobiles Sa DEVICE FOR GUIDING A WEB OF MATERIAL.
FR2979265B1 (en) * 2011-08-26 2013-08-16 Peugeot Citroen Automobiles Sa METHOD FOR PRODUCING A PIECE IN A STACKING STATION

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP3016757A1 (en) 2016-05-11
WO2015001217A1 (en) 2015-01-08
FR3008009A1 (en) 2015-01-09
FR3008009B1 (en) 2015-06-26

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