EP3100795A1 - Punch for forming by deep drawing an undercut edge of the deep drawn piece - Google Patents

Punch for forming by deep drawing an undercut edge of the deep drawn piece Download PDF

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Publication number
EP3100795A1
EP3100795A1 EP16170262.6A EP16170262A EP3100795A1 EP 3100795 A1 EP3100795 A1 EP 3100795A1 EP 16170262 A EP16170262 A EP 16170262A EP 3100795 A1 EP3100795 A1 EP 3100795A1
Authority
EP
European Patent Office
Prior art keywords
stamping
punch
sliding
frame
pivotally mounted
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.)
Withdrawn
Application number
EP16170262.6A
Other languages
German (de)
French (fr)
Inventor
Jean Luc Dumas
Bruno GULDEMONT
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.)
Filing date
Publication date
Application filed by Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Publication of EP3100795A1 publication Critical patent/EP3100795A1/en
Withdrawn legal-status Critical Current

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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
    • B21D19/00—Flanging or other edge treatment, e.g. of tubes
    • B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
    • B21D19/082—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws for making negative angles
    • B21D19/086—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws for making negative angles with rotary cams
    • 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
    • B21D19/00—Flanging or other edge treatment, e.g. of tubes
    • B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
    • B21D19/082—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws for making negative angles
    • B21D19/084—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws for making negative angles with linear cams, e.g. aerial cams
    • 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
    • B21D28/32—Perforating, i.e. punching holes in other articles of special shape
    • B21D28/325—Perforating, i.e. punching holes in other articles of special shape using cam or wedge mechanisms, e.g. aerial cams

Definitions

  • the invention relates to the field of stamping tooling in particular stamped body of a motor vehicle. More particularly, the invention relates to a punch for forming an edge against pressed draft and stamping tooling.
  • the figure 1 is a view of a body side 2 of a motor vehicle.
  • the crate side in question is a stamp obtained by successive passes of forming by stamping. It comprises an upper portion 4 of elongated shape along its connection with the roof liner and with the window windshield of the vehicle. This upper portion is of a small size section relative to the total height of the body side. In particular, the upper portion is of a very narrow section along the bay window which improves the brightness inside the vehicle.
  • the body side 2 further comprises, in particular at the front feet 5 and 5 'middle of the zones 6 comprising openings 8 for the passage of electrical harnesses, and door hinge fixing holes 10. The proximity of the zones 6 in question with the elongated upper portion 4 of the stamping lengthens the process of forming the stamping, and therefore the cost of manufacturing the stamping.
  • the patent document EP 2 058 061 A1 discloses a tool for forming an edge against pressed draft.
  • the tooling includes a lower tool and a top tool for moving closer to the lower tool for forming the press.
  • the lower tool comprises a frame, a member pivotally mounted to the frame and having a first bearing surface for the stamping to form the undercut edge by means of a deflection blade.
  • the lower tool also comprises an element mounted to move in translation on the pivoting element, said element comprising a second bearing surface for the stamping.
  • the tool further comprises an actuator with a sliding element on the frame and cooperating with the pivoting element to pivot it.
  • the member mounted to move in translation is movable by means of a slide comprising a sliding surface with the element in question, and comprising a cam opposite said surface.
  • the upper tool comprises, finally, a counter cam adapted by vertical approximation of lower and upper tools to engage with the cam of the slider for moving said slider.
  • the object of the invention is to propose a solution that overcomes at least one drawback of the state of the art, in particular of the state of the art mentioned above. More particularly, the object of the invention is to provide tooling for forming an edge against pressed draft, in particular of a motor vehicle body, which is of simple concept with a view to shaping the economic hit.
  • the invention relates to a punch for stamping, in particular of a motor vehicle body, with a view to forming by stamping an undercut edge of the stamping, said punch comprising: a frame; an element pivotally mounted on the frame and including a first bearing surface for the stamping to form the undercut edge by means of a deflection blade; an element movably mounted in translation on the pivoting element and comprising a second bearing surface for the stamping; an actuator with a sliding element on the frame and cooperating with the pivoting element to pivot it; remarkable in that the sliding element of the actuator is configured to cooperate also with the member mounted to move in translation for its displacement.
  • the sliding element comprises a sliding surface along the frame and a sliding surface against the pivotally mounted member and the member mounted to move in translation, the sliding surface being situated at a distance from opposite to the sliding surface and extending at least partially parallel to said surface.
  • the pivotally mounted member and the member movably mounted in translation each comprise a contact surface with the sliding surface of the sliding element, each of said contact surfaces. being located opposite the first or second bearing surface for stamping, respectively.
  • the sliding surface of the sliding element comprises, at one end, preferably opposite the actuator, a control portion, inclined with respect to the sliding direction of said element, intended to move the pivotally mounted member and the movably mounted member in translation, and a locking portion of said members.
  • the pivotally mounted element comprises an insert located opposite the first bearing surface, said part forming the contact surface of said element adapted to cooperate with the control portion of the sliding surface of the sliding element.
  • the insert located opposite the first bearing surface has a square profile.
  • the contact surface of the member mounted to move in translation comprises a portion inclined with respect to the direction of translation of said member, adapted to cooperate with the control portion of the sliding surface of the sliding element.
  • the pivotally mounted element comprises a sliding surface facing the first bearing surface, said surface being intended to receive a slide bearing the return blade.
  • the subject of the invention is also a stamping forming tool, in particular of a motor vehicle body, comprising a punch for receiving the stamping, remarkable in that the punch is in accordance with the invention, the frame being a first frame, the tooling further comprising a second frame with a return blade, the latter being adapted to cooperate with the first bearing surface of the pivotally mounted element by bringing said first and second frame together.
  • the tooling further comprises a slide bearing the return blade, said slide being able to slide on the sliding surface of the pivotally mounted element of the punch opposite the first bearing surface for the purpose of shaping the edge of the stamping.
  • the subject of the invention is also a process for shaping an edge against pressed draft, particularly of a motor vehicle body, comprising the following steps: receiving the stamping on a punch for stamping; forming an edge against the draft of the pressed against a first bearing surface for stamping; remarkable in that the punch for stamping is in accordance with the invention, the method further comprising, after the step of receiving the stamping, the control of the actuator so as to bring the first and second surfaces of support in contact with the stamp; and after the shaping step, controlling the actuator so as to remove the first and second bearing surfaces from their contact with the stamping to be able to remove said stamp.
  • the measures of the invention are interesting in that the tools for forming the edge against the draft of the stamping is of simple concept.
  • the tool comprises a punch with two movable elements able to be in contact with the edge to be shaped, one of the elements being pivotable and the other movable in translation, the movement of these two elements being realized by engagement with a single control and locking element sliding in one direction using a linear actuator.
  • the tooling makes it possible to integrate an additional tool for forming, for example a punching tool, with a view to reducing the number of press forming passes and making the press. more economical.
  • the figure 1 is a view of a stamp 2 forming the side of the body of a motor vehicle. This view has been presented in connection with the discussion of the state of the art. One can see in particular the edge 4 of elongated and narrow shape along the bay window, which is an edge of the pressed formed against undercut.
  • the figure 2 is a top view of a stamping tool 12 according to the invention and intended for forming against the draft edge 4 of the stamping 2.
  • the tooling 12 comprises a punch 14 according to the invention 2.
  • the punch 14 comprises a first frame 16 (shown symbolically in the image) and a pivotally mounted member 18 on the first frame 16 and with a first bearing surface 20 for the stamp 2.
  • first frame 16 also comprises a member mounted to move in translation 22 on the pivotally mounted member 18 and comprising a second bearing surface 24 for the stamping 2.
  • the bearing surfaces 20 and 24 are not visible in the image since they are behind the stamp 2.
  • the first frame 16 finally comprises an actuator 26 with a sliding element 28.
  • the actuator 26 is in this case a hydraulic cylinder with a control arm connected to the sliding member 28
  • the sliding element 28 is a cam having functions locking as well as control.
  • the explanation of the structural characteristics of the tooling 12 allowing these locking and control functions is described in detail in relation to the Figures 3 to 5 .
  • the sliding element 28 is made by two sliding pads 29 and 29 '.
  • the two pads of the sliding element 28 are sliding on the first frame 16 and cooperate with the pivoting member 18 for pivoting, and they also cooperate with the movably mounted member 22 for translation.
  • An opening 8 and apertures 10 such as those presented in connection with the figure 1 and located on the front foot 5 of the body side.
  • the process of forming the edge against the draft 4 of the stamp 2 according to the invention comprises the step a) receiving the stamp 2 on the punch 14; then step b) control of the hydraulic cylinder 26 so as to bring the first and second bearing surface 20 and 24 in contact with the stamp 2; then step c) shaped against the draft edge 4 of the stamping 2 against the first bearing surface 20 for the stamping 2; and finally step d) controlling the cylinder 26 so as to remove the first and second bearing surface 20 and 24 from their contact with the stamp 2 to be able to remove said stamp.
  • Steps b), c) and d) of the process are illustrated in relation to the Figures 3 to 5 following.
  • the tooling comprises a second frame with a return blade for forming the edge of the stamping.
  • the second frame is not shown, however, so as not to overload the image.
  • the figure 3 is a sectional view of the forming tool 12 according to the invention and illustrating step c) of shaping the process.
  • Punch 14 of the tooling introduced in connection with the figure 2 , one can see the first frame 16 with the cam 28 connected to the jack 26 and slidably mounted on the first frame 16.
  • the tool 12 further comprises a second frame 30 , in this case the upper frame, with a slider 32 comprising a return blade 34.
  • the slider 32 is slidable on a sliding surface 36 of the pivotally mounted element 18, the surface 36 is located opposite the first support surface 20.
  • the c) shaping step is carried out by bringing the first and second frames 16 and 30 closer together.
  • step c) of shaping the process and including the final assembly approach phase is here illustrated, the slide 32 carrying the return blade 34 takes support and slide on the sliding surface 36 of the pivoting member 18.
  • the return blade 34 thus cooperates with the first bearing surface 20 of the pivotally mounted member 18; the return blade 34 presses, in this case, the edge 4 of the stamping 2 against the first bearing surface 20 to shape the edge in question against undercutting.
  • the pivotally mounted element 18 comprises a first contact surface 38 with the cam 28 connected to the cylinder 26.
  • the movable element 22 in translation comprises a second contact surface 40 with the cam connected to the jack.
  • the first and second contact surfaces 38 and 40 in question cooperate with the cam 28 for locking.
  • the cam 28 comprises a sliding surface 42 along the frame 16, it also comprises a sliding surface 44 situated opposite the sliding surface and a portion 46 of which is parallel to the sliding surface 42.
  • This parallel portion 46 of the sliding surface 44 of the cam 28 is that against which correspondingly shaped portions of the first and second contact surfaces 38 and 40 are supported during the shaping. This measurement is interesting to maintain still the bearing surfaces 20 and 24 of the edge 4 of the stamping 2 during the shaping.
  • step d) of the process subsequent to the shaping and in two successive phases according to the invention before being able to remove the stamping of the tooling.
  • the figure 4 is a sectional view of the forming punch 14 according to the invention.
  • the punch 14 is illustrated in an initial phase of step d) of the process according to the invention after forming.
  • This initial phase of step d) of the method corresponds to the control of the jack 26 to remove the second bearing surface 24 of the movable member 22 in translation from its contact with the edge 4 of the stamping 2 in order to free a space for pivoting of the pivoting member 18.
  • the sliding surface 44 of the cam 28 connected to the jack 26 and which we have already presented the parallel portion 46 further comprises a control portion 48 inclined relative to the "K" direction of sliding of the cam. This inclined portion 48 is intended to move the pivotally mounted member 18 and the movably mounted member 22 in translation.
  • This portion 48 is located at one end of the cam 28, in this case opposite the jack 26 and is adapted to cooperate with a correspondingly shaped portion of the second contact surface 40.
  • the contact surface 40 of the member mounted movable in translation 22 comprises indeed an inclined portion 40 'with respect to the translation direction "L" of said element, portion whose surface is that corresponding and adapted to cooperate with the control portion 48 of the sliding surface 44 of the cam.
  • the figure 5 is a sectional view of the forming punch 14 according to the invention.
  • the punch 14 is illustrated in a subsequent phase of step d) of the process according to the invention after forming.
  • This subsequent phase of step d) precedes the removal of the stamp 2 from the punch 14.
  • This subsequent phase corresponds to the control of the jack 26 to remove the first bearing surface 20 from the pivotally mounted member 18 of its contact with the edge 4 of the stamping 2. This withdrawal is done by return of the arm of the jack and pivoting of the element 18 relative to the frame 16.
  • the control portion 48 of the sliding surface 44 of the cam 28 is in contact with the first contact surface 38, that of the pivotally mounted element 18.
  • the contact between the contact surface 38 in question and the inclined portion 48 of the cam 28 is in this case made at an angle 50 of this contact surface 38 which has a general shape of square.
  • the angular contact surface 38 of the pivotally mounted member 18 is formed by an insert 52 on the pivotally mounted member 18 opposite the first surface of the support 20.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)

Abstract

L'invitation consiste en un poinçon (14) pour embouti (2), notamment de carrosserie de véhicule automobile, en vue de la mise à forme par emboutissage d'un bord en contre-dépouille (4) de l'embouti, ledit poinçon comprenant : un bâti (16) ; un élément monté pivotant (18) sur le bâti et comprenant une première surface d'appui (20) pour l'embouti (2) en vue de former le bord en contre-dépouille (4) au moyen d'une lame de renvoi (34) ; un élément monté mobile en translation (22) sur l'élément pivotant (18) et comprenant une deuxième surface d'appui (24) pour l'embouti (2) ; un actionneur (26) avec un élément coulissant (28) sur le bâti et coopérant avec l'élément pivotant en vue de son pivotement ainsi qu'avec l'élément monté mobile en translation en vue de son déplacement.The invitation consists of a punch (14) for stamping (2), in particular of a motor vehicle body, with a view to forming by stamping an undercut edge (4) of the stamping, said punch comprising: a frame (16); a pivotally mounted member (18) on the frame and including a first pressing surface (20) for the stamping (2) to form the undercut edge (4) by means of a deflection blade ( 34); a member mounted movable in translation (22) on the pivoting member (18) and comprising a second bearing surface (24) for the stamping (2); an actuator (26) with a sliding element (28) on the frame and cooperating with the pivoting member for pivoting and with the member movable in translation for its displacement.

Description

L'invention a trait au domaine de l'outillage d'emboutissage notamment d'embouti de carrosserie de véhicule automobile. Plus particulièrement, l'invention a trait à un poinçon de mise à forme d'un bord en contre dépouille d'embouti et à un outillage d'emboutissage.The invention relates to the field of stamping tooling in particular stamped body of a motor vehicle. More particularly, the invention relates to a punch for forming an edge against pressed draft and stamping tooling.

La figure 1 est une vue d'un côté de caisse 2 de véhicule automobile. Le côté de caisse en question est un embouti obtenu par des passes successives de mise à forme par emboutissage. Il comprend une portion supérieure 4 de forme allongée le long de sa liaison avec le pavillon de toit et avec la baie vitrée de pare-brise du véhicule. Cette portion supérieure est d'une section de faible dimension par rapport à la hauteur totale du côté de caisse. En particulier, la portion supérieure est d'une section très étroite le long de la baie vitrée ce qui améliore la luminosité à l'intérieur du véhicule. Le côté de caisse 2 comprend, en outre, notamment au niveau des pieds avant 5 et milieu 5' des zones 6 comprenant des ouvertures 8 pour le passage de faisceaux électriques, et des orifices de fixation 10 de charnière de portière. La proximité des zones 6 en question avec la portion supérieure de forme allongée 4 de l'embouti rallonge le procédé de mise à forme de l'embouti, et par conséquent le coût de fabrication de l'embouti.The figure 1 is a view of a body side 2 of a motor vehicle. The crate side in question is a stamp obtained by successive passes of forming by stamping. It comprises an upper portion 4 of elongated shape along its connection with the roof liner and with the window windshield of the vehicle. This upper portion is of a small size section relative to the total height of the body side. In particular, the upper portion is of a very narrow section along the bay window which improves the brightness inside the vehicle. The body side 2 further comprises, in particular at the front feet 5 and 5 'middle of the zones 6 comprising openings 8 for the passage of electrical harnesses, and door hinge fixing holes 10. The proximity of the zones 6 in question with the elongated upper portion 4 of the stamping lengthens the process of forming the stamping, and therefore the cost of manufacturing the stamping.

Le document de brevet EP 2 058 061 A1 divulgue un outillage de mise à forme d'un bord en contre dépouille d'embouti. L'outillage comprend un outil inférieur et un outil supérieur destiné à se rapprocher de l'outil inférieur pour la mise à forme de l'embouti. L'outil inférieur comprend un bâti, un élément monté pivotant sur le bâti et comprenant une première surface d'appui pour l'embouti en vue de former le bord en contre-dépouille au moyen d'une lame de renvoi. L'outil inférieur comprend aussi un élément monté mobile en translation sur l'élément pivotant, ledit élément comprenant une deuxième surface d'appui pour l'embouti. L'outil comprend, en outre, un actionneur avec un élément coulissant sur le bâti et coopérant avec l'élément pivotant en vue de son pivotement. L'élément monté mobile en translation est mobile grâce à un coulisseau comprenant une surface de glissement avec l'élément en question, et comprenant une came à l'opposé de ladite surface. L'outil supérieur comprend, enfin, une contre came apte par rapprochement vertical des outils inférieur et supérieur à engager avec la came du coulisseau pour le déplacement dudit coulisseau. Cet enseignement est intéressant en ce que l'outillage permet la réalisation d'un bord en contre dépouille d'embouti. Il est cependant encombrant ce qui rend difficilement envisageable d'intégrer un outil supplémentaire à l'outillage en question pour une mise à forme supplémentaire et concomitante dans la zone du bord en contre dépouille.The patent document EP 2 058 061 A1 discloses a tool for forming an edge against pressed draft. The tooling includes a lower tool and a top tool for moving closer to the lower tool for forming the press. The lower tool comprises a frame, a member pivotally mounted to the frame and having a first bearing surface for the stamping to form the undercut edge by means of a deflection blade. The lower tool also comprises an element mounted to move in translation on the pivoting element, said element comprising a second bearing surface for the stamping. The tool further comprises an actuator with a sliding element on the frame and cooperating with the pivoting element to pivot it. The member mounted to move in translation is movable by means of a slide comprising a sliding surface with the element in question, and comprising a cam opposite said surface. The upper tool comprises, finally, a counter cam adapted by vertical approximation of lower and upper tools to engage with the cam of the slider for moving said slider. This teaching is interesting in that the tooling allows the realization of an edge against pressed draft. However, it is bulky which makes it difficult to envisage integrating an additional tool with the tool in question for additional and concomitant shaping in the area of the undercut edge.

L'invention a pour objectif de proposer une solution palliant au moins un inconvénient de l'état de l'art, en particulier de l'état de l'art susmentionné. Plus particulièrement, l'invention a pour objectif de proposer un outillage de mise à forme d'un bord en contre dépouille d'embouti, notamment de carrosserie de véhicule automobile, qui soit de concept simple en vue d'une mise à forme de l'embouti économique.The object of the invention is to propose a solution that overcomes at least one drawback of the state of the art, in particular of the state of the art mentioned above. More particularly, the object of the invention is to provide tooling for forming an edge against pressed draft, in particular of a motor vehicle body, which is of simple concept with a view to shaping the economic hit.

L'invention a pour objet un poinçon pour embouti, notamment de carrosserie de véhicule automobile, en vue de la mise à forme par emboutissage d'un bord en contre-dépouille de l'embouti, ledit poinçon comprenant : un bâti ; un élément monté pivotant sur le bâti et comprenant une première surface d'appui pour l'embouti en vue de former le bord en contre-dépouille au moyen d'une lame de renvoi ; un élément monté mobile en translation sur l'élément pivotant et comprenant une deuxième surface d'appui pour l'embouti ; un actionneur avec un élément coulissant sur le bâti et coopérant avec l'élément pivotant en vue de son pivotement ; remarquable en ce que l'élément coulissant de l'actionneur est configuré pour coopérer également avec l'élément monté mobile en translation en vue de son déplacement.The invention relates to a punch for stamping, in particular of a motor vehicle body, with a view to forming by stamping an undercut edge of the stamping, said punch comprising: a frame; an element pivotally mounted on the frame and including a first bearing surface for the stamping to form the undercut edge by means of a deflection blade; an element movably mounted in translation on the pivoting element and comprising a second bearing surface for the stamping; an actuator with a sliding element on the frame and cooperating with the pivoting element to pivot it; remarkable in that the sliding element of the actuator is configured to cooperate also with the member mounted to move in translation for its displacement.

Selon un mode avantageux de l'invention, l'élément coulissant comprend une surface de coulissement le long du bâti et une surface de glissement contre l'élément monté pivotant et l'élément monté mobile en translation, la surface de glissement étant située à l'opposé de la surface de coulissement et s'étendant au moins partiellement parallèlement à ladite surface.According to an advantageous embodiment of the invention, the sliding element comprises a sliding surface along the frame and a sliding surface against the pivotally mounted member and the member mounted to move in translation, the sliding surface being situated at a distance from opposite to the sliding surface and extending at least partially parallel to said surface.

Selon un mode avantageux de l'invention, l'élément monté pivotant et l'élément monté mobile en translation comprennent, chacun, une surface de contact avec la surface de glissement de l'élément coulissant, chacune desdites surfaces de contact étant située à l'opposé de la première ou de la deuxième surface d'appui pour l'embouti, respectivement.According to an advantageous embodiment of the invention, the pivotally mounted member and the member movably mounted in translation each comprise a contact surface with the sliding surface of the sliding element, each of said contact surfaces. being located opposite the first or second bearing surface for stamping, respectively.

Selon un mode avantageux de l'invention, la surface de glissement de l'élément coulissant comprend, à une extrémité, préférentiellement à l'opposé de l'actionneur, une portion de commande, inclinée par rapport à la direction de coulissement dudit élément, destinée à déplacer l'élément monté pivotant et l'élément monté mobile en translation, et une portion de verrouillage desdits éléments.According to an advantageous embodiment of the invention, the sliding surface of the sliding element comprises, at one end, preferably opposite the actuator, a control portion, inclined with respect to the sliding direction of said element, intended to move the pivotally mounted member and the movably mounted member in translation, and a locking portion of said members.

Selon un mode avantageux de l'invention, l'élément monté pivotant comprend une pièce rapportée située à l'opposé de la première surface d'appui, ladite pièce formant la surface de contact dudit élément apte à coopérer avec la portion de commande de la surface de glissement de l'élément coulissant.According to an advantageous embodiment of the invention, the pivotally mounted element comprises an insert located opposite the first bearing surface, said part forming the contact surface of said element adapted to cooperate with the control portion of the sliding surface of the sliding element.

Selon un mode avantageux de l'invention, la pièce rapportée située à l'opposé de la première surface d'appui présente un profil en forme d'équerre.According to an advantageous embodiment of the invention, the insert located opposite the first bearing surface has a square profile.

Selon un mode avantageux de l'invention, la surface de contact de l'élément monté mobile en translation comprend une portion inclinée par rapport à la direction de translation dudit élément, apte à coopérer avec la portion de commande de la surface de glissement de l'élément coulissant.According to an advantageous embodiment of the invention, the contact surface of the member mounted to move in translation comprises a portion inclined with respect to the direction of translation of said member, adapted to cooperate with the control portion of the sliding surface of the sliding element.

Selon un mode avantageux de l'invention, l'élément monté pivotant comprend une surface de coulissement en face de la première surface d'appui, ladite surface étant destinée à recevoir un coulisseau portant la lame de renvoi.According to an advantageous embodiment of the invention, the pivotally mounted element comprises a sliding surface facing the first bearing surface, said surface being intended to receive a slide bearing the return blade.

L'invention a également pour objet un outillage de mise à forme d'embouti, notamment de carrosserie de véhicule automobile, comprenant un poinçon pour recevoir l'embouti, remarquable en ce que le poinçon est conforme à l'invention, le bâti étant un premier bâti, l'outillage comprenant, en outre, un deuxième bâti avec une lame de renvoi, cette dernière étant apte à coopérer avec la première surface d'appui de l'élément monté pivotant par rapprochement entre lesdits premier et deuxième bâti.The subject of the invention is also a stamping forming tool, in particular of a motor vehicle body, comprising a punch for receiving the stamping, remarkable in that the punch is in accordance with the invention, the frame being a first frame, the tooling further comprising a second frame with a return blade, the latter being adapted to cooperate with the first bearing surface of the pivotally mounted element by bringing said first and second frame together.

Selon un mode avantageux de l'invention, l'outillage comprend, en outre, un coulisseau portant la lame de renvoi, ledit coulisseau étant apte à coulisser sur la surface de coulissement de l'élément monté pivotant du poinçon en face de la première surface d'appui en vue de la mise à forme du bord de l'embouti.According to an advantageous embodiment of the invention, the tooling further comprises a slide bearing the return blade, said slide being able to slide on the sliding surface of the pivotally mounted element of the punch opposite the first bearing surface for the purpose of shaping the edge of the stamping.

L'invention a également pour objet un procédé de mise à forme d'un bord en contre dépouille d'embouti, notamment de carrosserie de véhicule automobile, comprenant les étapes suivantes : réception de l'embouti sur un poinçon pour embouti ; mise à forme d'un bord en contre dépouille de l'embouti contre une première surface d'appui pour l'embouti ; remarquable en ce que le poinçon pour embouti est conforme à l'invention, le procédé comprenant, en outre, après l'étape de réception de l'embouti, la commande de l'actionneur de manière à amener les première et deuxième surface d'appui en contact avec l'embouti ; et après l'étape de mise à forme, la commande de l'actionneur de manière à retirer les première et deuxième surface d'appui de leur contact avec l'embouti en vue de pouvoir enlever ledit embouti.The subject of the invention is also a process for shaping an edge against pressed draft, particularly of a motor vehicle body, comprising the following steps: receiving the stamping on a punch for stamping; forming an edge against the draft of the pressed against a first bearing surface for stamping; remarkable in that the punch for stamping is in accordance with the invention, the method further comprising, after the step of receiving the stamping, the control of the actuator so as to bring the first and second surfaces of support in contact with the stamp; and after the shaping step, controlling the actuator so as to remove the first and second bearing surfaces from their contact with the stamping to be able to remove said stamp.

Les mesures de l'invention sont intéressantes en ce que l'outillage de mise à forme du bord en contre dépouille de l'embouti est de concept simple. En effet, l'outillage comprend un poinçon avec deux éléments mobiles apte à être en contact avec le bord à mettre à forme, l'un des éléments étant pivotant et l'autre mobile en translation, le mouvement de ces deux éléments étant réalisé par engagement avec un élément de commande et de verrouillage simple coulissant dans une direction à l'aide d'un actionneur linéaire. L'outillage rend envisageable l'intégration d'un outil supplémentaire de mise à forme, par exemple un outil de poinçonnage, en vue d'une réduction du nombre de passes de mise à forme de l'embouti et une fabrication de l'embouti plus économique.The measures of the invention are interesting in that the tools for forming the edge against the draft of the stamping is of simple concept. Indeed, the tool comprises a punch with two movable elements able to be in contact with the edge to be shaped, one of the elements being pivotable and the other movable in translation, the movement of these two elements being realized by engagement with a single control and locking element sliding in one direction using a linear actuator. The tooling makes it possible to integrate an additional tool for forming, for example a punching tool, with a view to reducing the number of press forming passes and making the press. more economical.

D'autres caractéristiques et avantages de la présente invention seront mieux compris à l'aide de la description et des dessins parmi lesquels :

  • La figure 1 est une vue d'un embouti de côté de caisse de véhicule automobile ;
  • La figure 2 est une vue de dessus d'un outillage de mise à forme de l'embouti de la figure 1 conforme à l'invention ;
  • La figure 3 est une vue en coupe de l'outillage de la figure 2 dans une étape de mise à forme de l'embouti du procédé de mise à forme conforme à l'invention ;
  • La figure 4 est une vue en coupe du poinçon de l'outillage de la figure 2 dans une phase initiale d'une étape du procédé suivant l'étape de mise à forme ;
  • La figure 5 est une vue en coupe du poinçon de l'outillage de la figure 2 dans une phase du procédé ultérieure à la phase illustrée à la figure 4 ;
Other features and advantages of the present invention will be better understood from the description and the drawings, among which:
  • The figure 1 is a view of a stamped side of a motor vehicle body;
  • The figure 2 is a top view of a stamping tooling of the stamping of the figure 1 according to the invention;
  • The figure 3 is a sectional view of the tooling of the figure 2 in a step of shaping the stamping of the forming process according to the invention;
  • The figure 4 is a sectional view of the punch of the tooling of the figure 2 in an initial phase of a step of the process following the shaping step;
  • The figure 5 is a sectional view of the punch of the tooling of the figure 2 in a phase of the process subsequent to the phase illustrated in figure 4 ;

La figure 1 est une vue d'un embouti 2 formant le côté de caisse d'un véhicule automobile. Cette vue a été présentée en relation avec la discussion de l'état de la technique. On peut voir en particulier le bord 4 de forme allongée et étroite le long de la baie vitrée, qui est un bord de l'embouti mis à forme en contre dépouille.The figure 1 is a view of a stamp 2 forming the side of the body of a motor vehicle. This view has been presented in connection with the discussion of the state of the art. One can see in particular the edge 4 of elongated and narrow shape along the bay window, which is an edge of the pressed formed against undercut.

La figure 2 est une vue de dessus d'un outillage d'emboutissage 12 conforme à l'invention et destiné à la mise à forme en contre dépouille du bord 4 de l'embouti 2. L'outillage 12 comprend un poinçon 14 conforme à l'invention et recevant l'embouti 2. Le poinçon 14 comprend un premier bâti 16 (représenté symboliquement sur l'image) et un élément monté pivotant 18 sur le premier bâti 16 et avec une première surface d'appui 20 pour l'embouti 2. Le premier bâti 16 comprend aussi un élément monté mobile en translation 22 sur l'élément monté pivotant 18 et comprenant une deuxième surface d'appui 24 pour l'embouti 2. Les surfaces d'appui 20 et 24 ne sont pas visibles sur l'image car elles sont en arrière de l'embouti 2. Le premier bâti 16 comprend enfin un actionneur 26 avec un élément coulissant 28. L'actionneur 26 est en l'occurrence un vérin hydraulique avec un bras de commande relié à l'élément coulissant 28. L'élément coulissant 28 est une came ayant des fonctions de verrouillage ainsi que de commande. L'explication des caractéristiques structurelles de l'outillage 12 permettant ces fonctions de verrouillage et de commande est décrite de manière détaillée en relation avec les figures 3 à 5. Dans le mode de réalisation présenté, l'élément coulissant 28 est réalisé par deux patins coulissants 29 et 29'. Les deux patins de l'élément coulissant 28 sont coulissants sur le premier bâti 16 et coopèrent avec l'élément pivotant 18 en vue de son pivotement, et ils coopèrent aussi avec l'élément monté mobile en translation 22 en vue de son déplacement. On peut voir une ouverture 8 et des orifices 10 tels que ceux présentés en relation avec la figure 1 et situés sur le pied avant 5 du côté de caisse. Il est intéressant d'observer que le poinçon 14 conforme à l'invention laisse de la place libre sur l'outillage 12 dans la zone autour de ces ouvertures pour l'emplacement d'outil(s) de mise à forme, par exemple d'outil(s) de poinçonnage pour la réalisation de ces ouvertures. Le procédé de mise à forme du bord en contre dépouille 4 de l'embouti 2 conforme à l'invention comprend l'étape a) réception de l'embouti 2 sur le poinçon 14; puis l'étape b) commande du vérin hydraulique 26 de manière à amener les première et deuxième surface d'appui 20 et 24 en contact avec l'embouti 2 ; puis l'étape c) mise à forme en contre dépouille du bord 4 de l'embouti 2 contre la première surface d'appui 20 pour l'embouti 2 ; et enfin l'étape d) commande du vérin 26 de manière à retirer les première et deuxième surface d'appui 20 et 24 de leur contact avec l'embouti 2 en vue de pouvoir enlever ledit embouti. Les étapes b), c) et d) du procédé sont illustrées en relation avec les figures 3 à 5 suivantes. Il est à noter que l'outillage comprend un deuxième bâti avec une lame de renvoi pour la mise à forme du bord de l'embouti. Le deuxième bâti n'est cependant pas représenté pour ne pas surcharger l'image.The figure 2 is a top view of a stamping tool 12 according to the invention and intended for forming against the draft edge 4 of the stamping 2. The tooling 12 comprises a punch 14 according to the invention 2. The punch 14 comprises a first frame 16 (shown symbolically in the image) and a pivotally mounted member 18 on the first frame 16 and with a first bearing surface 20 for the stamp 2. first frame 16 also comprises a member mounted to move in translation 22 on the pivotally mounted member 18 and comprising a second bearing surface 24 for the stamping 2. The bearing surfaces 20 and 24 are not visible in the image since they are behind the stamp 2. The first frame 16 finally comprises an actuator 26 with a sliding element 28. The actuator 26 is in this case a hydraulic cylinder with a control arm connected to the sliding member 28 The sliding element 28 is a cam having functions locking as well as control. The explanation of the structural characteristics of the tooling 12 allowing these locking and control functions is described in detail in relation to the Figures 3 to 5 . In the embodiment shown, the sliding element 28 is made by two sliding pads 29 and 29 '. The two pads of the sliding element 28 are sliding on the first frame 16 and cooperate with the pivoting member 18 for pivoting, and they also cooperate with the movably mounted member 22 for translation. An opening 8 and apertures 10 such as those presented in connection with the figure 1 and located on the front foot 5 of the body side. He is interesting to observe that the punch 14 according to the invention leaves free space on the tool 12 in the area around these openings for the location of tool (s) shaping, for example tool ( s) punching for the realization of these openings. The process of forming the edge against the draft 4 of the stamp 2 according to the invention comprises the step a) receiving the stamp 2 on the punch 14; then step b) control of the hydraulic cylinder 26 so as to bring the first and second bearing surface 20 and 24 in contact with the stamp 2; then step c) shaped against the draft edge 4 of the stamping 2 against the first bearing surface 20 for the stamping 2; and finally step d) controlling the cylinder 26 so as to remove the first and second bearing surface 20 and 24 from their contact with the stamp 2 to be able to remove said stamp. Steps b), c) and d) of the process are illustrated in relation to the Figures 3 to 5 following. It should be noted that the tooling comprises a second frame with a return blade for forming the edge of the stamping. The second frame is not shown, however, so as not to overload the image.

La figure 3 est une vue en coupe de l'outillage 12 de mise à forme conforme à l'invention et illustrant l'étape c) de mise à forme du procédé. Du poinçon 14 de l'outillage introduit en relation avec la figure 2, on peut voir le premier bâti 16 avec la came 28 reliée au vérin 26 et montée coulissante sur le premier bâti 16. On peut également voir l'élément monté pivotant 18 sur le premier bâti 16 avec la première surface d'appui 20 de l'embouti 2, et enfin on peut voir l'élément mobile en translation 22 sur l'élément monté pivotant 18 avec la deuxième surface d'appui 24 de l'embouti 2. L'outillage 12 comprend, en outre, un deuxième bâti 30, en l'occurrence le bâti supérieur, avec un coulisseau 32 comprenant une lame de renvoi 34. Le coulisseau 32 est apte à coulisser sur une surface de coulissement 36 de l'élément monté pivotant 18, la surface 36 est située en face de la première surface d'appui 20. L'étape c) de mise à forme est réalisée par rapprochement des premier et deuxième bâtis 16 et 30. A l'étape c) de mise à forme du procédé et dont la phase finale de rapprochement des bâtis est ici illustrée, le coulisseau 32 portant la lame de renvoi 34 prend appui et coulisse sur la surface de coulissement 36 de l'élément pivotant 18. La lame de renvoi 34 coopère ainsi avec la première surface d'appui 20 de l'élément monté pivotant 18 ; la lame de renvoi 34 presse, en l'occurrence, le bord 4 de l'embouti 2 contre la première surface d'appui 20 pour mettre à forme le bord en question en contre dépouille. A l'opposé de la première surface d'appui 20 avec laquelle coopère la lame de renvoi 34, l'élément monté pivotant 18 comprend une première surface de contact 38 avec la came 28 reliée au vérin 26. A l'opposé de la deuxième surface d'appui 24 de l'élément mobile en translation, surface qui est également à cette étape en contact avec l'embouti 2, l'élément mobile en translation 22 comprend une deuxième surface de contact 40 avec la came reliée au vérin. Lors de l'étape c) du procédé les première et deuxième surfaces de contact 38 et 40 en question coopèrent avec la came 28 pour leur verrouillage. Plus précisément, la came 28 comprend une surface de coulissement 42 le long du bâti 16, elle comprend aussi une surface de glissement 44 située à l'opposé de la surface de coulissement et dont une portion 46 est parallèle à la surface de coulissement 42. Cette portion parallèle 46 de la surface de glissement 44 de la came 28 est celle contre laquelle des portions de forme correspondante des première et deuxième surfaces de contact 38 et 40 sont en appui lors de la mise à forme. Cette mesure est intéressante pour maintenir immobile les surfaces d'appui 20 et 24 du bord 4 de l'embouti 2 lors de la mise à forme.The figure 3 is a sectional view of the forming tool 12 according to the invention and illustrating step c) of shaping the process. Punch 14 of the tooling introduced in connection with the figure 2 , one can see the first frame 16 with the cam 28 connected to the jack 26 and slidably mounted on the first frame 16. One can also see the pivotally mounted member 18 on the first frame 16 with the first bearing surface 20 of the 2, and finally one can see the movable member 22 in translation on the pivotally mounted member 18 with the second bearing surface 24 of the stamping 2. The tool 12 further comprises a second frame 30 , in this case the upper frame, with a slider 32 comprising a return blade 34. The slider 32 is slidable on a sliding surface 36 of the pivotally mounted element 18, the surface 36 is located opposite the first support surface 20. The c) shaping step is carried out by bringing the first and second frames 16 and 30 closer together. In step c) of shaping the process and including the final assembly approach phase is here illustrated, the slide 32 carrying the return blade 34 takes support and slide on the sliding surface 36 of the pivoting member 18. The return blade 34 thus cooperates with the first bearing surface 20 of the pivotally mounted member 18; the return blade 34 presses, in this case, the edge 4 of the stamping 2 against the first bearing surface 20 to shape the edge in question against undercutting. Opposite the first bearing surface 20 with which the deflection blade 34 cooperates, the pivotally mounted element 18 comprises a first contact surface 38 with the cam 28 connected to the cylinder 26. At the opposite of the second bearing surface 24 of the movable element in translation, which surface is also in this stage in contact with the stamping 2, the movable element 22 in translation comprises a second contact surface 40 with the cam connected to the jack. In step c) of the method the first and second contact surfaces 38 and 40 in question cooperate with the cam 28 for locking. More specifically, the cam 28 comprises a sliding surface 42 along the frame 16, it also comprises a sliding surface 44 situated opposite the sliding surface and a portion 46 of which is parallel to the sliding surface 42. This parallel portion 46 of the sliding surface 44 of the cam 28 is that against which correspondingly shaped portions of the first and second contact surfaces 38 and 40 are supported during the shaping. This measurement is interesting to maintain still the bearing surfaces 20 and 24 of the edge 4 of the stamping 2 during the shaping.

Les figures 4 et 5 suivantes illustrent l'étape d) du procédé ultérieure à la mise à forme et selon deux phases successives conforme à l'invention avant de pouvoir enlever l'embouti de l'outillage.The Figures 4 and 5 following illustrate step d) of the process subsequent to the shaping and in two successive phases according to the invention before being able to remove the stamping of the tooling.

La figure 4 est une vue en coupe du poinçon 14 de mise à forme conforme à l'invention. Le poinçon 14 est illustré dans une phase initiale de l'étape d) du procédé conforme à l'invention après la mise à forme. Cette phase initiale de l'étape d) du procédé correspond à la commande du vérin 26 pour retirer la deuxième surface 24 d'appui de l'élément mobile en translation 22 de son contact avec le bord 4 de l'embouti 2 en vue de libérer un espace pour le pivotement de l'élément pivotant 18. La surface de glissement 44 de la came 28 reliée au vérin 26 et dont nous avons déjà présenté la portion parallèle 46, comprend en outre, une portion de commande 48 inclinée par rapport à la direction «K» de coulissement de la came. Cette portion inclinée 48 est destinée à déplacer l'élément monté pivotant 18 ainsi que l'élément monté mobile 22 en translation. Cette portion 48 est située à une extrémité de la came 28, en l'occurrence à l'opposé du vérin 26 et est apte à coopérer avec une portion de forme correspondante de la deuxième surface de contact 40. La surface de contact 40 de l'élément monté mobile en translation 22 comprend en effet une portion inclinée 40' par rapport à la direction de translation « L » dudit élément, portion dont la surface est celle correspondante et apte à coopérer avec la portion de commande 48 de la surface de glissement 44 de la came.The figure 4 is a sectional view of the forming punch 14 according to the invention. The punch 14 is illustrated in an initial phase of step d) of the process according to the invention after forming. This initial phase of step d) of the method corresponds to the control of the jack 26 to remove the second bearing surface 24 of the movable member 22 in translation from its contact with the edge 4 of the stamping 2 in order to free a space for pivoting of the pivoting member 18. The sliding surface 44 of the cam 28 connected to the jack 26 and which we have already presented the parallel portion 46, further comprises a control portion 48 inclined relative to the "K" direction of sliding of the cam. This inclined portion 48 is intended to move the pivotally mounted member 18 and the movably mounted member 22 in translation. This portion 48 is located at one end of the cam 28, in this case opposite the jack 26 and is adapted to cooperate with a correspondingly shaped portion of the second contact surface 40. The contact surface 40 of the member mounted movable in translation 22 comprises indeed an inclined portion 40 'with respect to the translation direction "L" of said element, portion whose surface is that corresponding and adapted to cooperate with the control portion 48 of the sliding surface 44 of the cam.

La figure 5 est une vue en coupe du poinçon 14 de mise à forme conforme à l'invention. Le poinçon 14 est illustré dans une phase ultérieure de l'étape d) du procédé conforme à l'invention après la mise à forme. Cette phase ultérieure de l'étape d) précède l'enlèvement de l'embouti 2 du poinçon 14. Cette phase ultérieure correspond à la commande du vérin 26 pour retirer la première surface d'appui 20 de l'élément monté pivotant 18 de son contact avec le bord 4 de l'embouti 2. Ce retrait se fait par retour du bras du vérin et pivotement de l'élément 18 par rapport au bâti 16. La portion de commande 48 de la surface de glissement 44 de la came 28 est en contact avec la première surface de contact 38, celle de l'élément monté pivotant 18. Le contact entre la surface de contact 38 en question et la portion inclinée 48 de la came 28 est en l'occurrence réalisé au niveau d'un angle 50 de cette surface de contact 38 qui a une forme générale d'équerre. Dans le mode de réalisation ici présenté, la surface de contact 38 en forme d'équerre de l'élément monté pivotant 18, est réalisé par une pièce rapportée 52 sur l'élément monté pivotant 18 à l'opposé de la première surface d'appui 20.The figure 5 is a sectional view of the forming punch 14 according to the invention. The punch 14 is illustrated in a subsequent phase of step d) of the process according to the invention after forming. This subsequent phase of step d) precedes the removal of the stamp 2 from the punch 14. This subsequent phase corresponds to the control of the jack 26 to remove the first bearing surface 20 from the pivotally mounted member 18 of its contact with the edge 4 of the stamping 2. This withdrawal is done by return of the arm of the jack and pivoting of the element 18 relative to the frame 16. The control portion 48 of the sliding surface 44 of the cam 28 is in contact with the first contact surface 38, that of the pivotally mounted element 18. The contact between the contact surface 38 in question and the inclined portion 48 of the cam 28 is in this case made at an angle 50 of this contact surface 38 which has a general shape of square. In the embodiment presented here, the angular contact surface 38 of the pivotally mounted member 18 is formed by an insert 52 on the pivotally mounted member 18 opposite the first surface of the support 20.

Les figures 4 et 5 décrites et illustrant des phases successives de l'étape d) du procédé conforme à l'invention, illustrent également, si regardées dans un ordre inversé Fig. 5 puis Fig. 4, des phases successives de l'étape b) du procédé correspondant à la commande du vérin hydraulique de manière à amener les première et deuxième surface d'appui 20 et 24 en contact avec le bord 4 de l'embouti 2.The Figures 4 and 5 described and illustrating successive phases of step d) of the process according to the invention, also illustrate, if viewed in reverse order Fig. 5 then Fig. 4 , successive phases of step b) of the method corresponding to the control of the hydraulic cylinder so as to bring the first and second bearing surface 20 and 24 in contact with the edge 4 of the stamping 2.

Claims (10)

Poinçon (14) pour embouti (2), notamment de carrosserie de véhicule automobile, en vue de la mise à forme par emboutissage d'un bord en contre-dépouille (4) de l'embouti, ledit poinçon (14) comprenant : - un bâti (16) ; - un élément monté pivotant (18) sur le bâti (16) et comprenant une première surface d'appui (20) pour l'embouti (2) en vue de former le bord en contre-dépouille (4) au moyen d'une lame de renvoi (34) ; - un élément monté mobile en translation (22) sur l'élément pivotant (18) et comprenant une deuxième surface d'appui (24) pour l'embouti (2) ; - un actionneur (26) avec un élément coulissant (28) sur le bâti (16) et coopérant avec l'élément pivotant (18) en vue de son pivotement ; caractérisé en ce que l'élément coulissant (28) de l'actionneur (26) est configuré pour coopérer également avec l'élément monté mobile en translation (22) en vue de son déplacement.Punch (14) for stamping (2), in particular of a motor vehicle body, for forming by stamping an undercut edge (4) of the stamping, said punch (14) comprising: - a frame (16); a pivotally mounted member (18) on the frame (16) and including a first pressing surface (20) for the stamping (2) to form the undercut edge (4) by means of a deflection blade (34); - A member mounted movably in translation (22) on the pivoting member (18) and comprising a second bearing surface (24) for the stamping (2); - an actuator (26) with a sliding element (28) on the frame (16) and cooperating with the pivoting member (18) for pivoting; characterized in that the sliding element (28) of the actuator (26) is configured to cooperate also with the movably mounted member (22) for displacement. Poinçon (14) pour embouti (2) selon la revendication 1, caractérisé en ce que l'élément coulissant (28) comprend une surface de coulissement (42) le long du bâti (16) et une surface de glissement (44) contre l'élément monté pivotant (18) et l'élément monté mobile en translation (22), la surface de glissement (44) étant située à l'opposé de la surface de coulissement (42) et s'étendant au moins partiellement parallèlement à ladite surface.Punch (14) for stamping (2) according to claim 1, characterized in that the sliding element (28) comprises a sliding surface (42) along the frame (16) and a sliding surface (44) against the pivotally mounted member (18) and the member movable in translation (22), the sliding surface (44) being located opposite the sliding surface (42) and extending at least partially parallel to said area. Poinçon (14) pour embouti (2) selon la revendication 2, caractérisé en ce que l'élément monté pivotant (18) et l'élément monté mobile en translation (22) comprennent, chacun, une surface de contact (38 ; 40) avec la surface de glissement (44) de l'élément coulissant (28), chacune desdites surfaces de contact étant située à l'opposé de la première (20) ou de la deuxième surface d'appui (24) pour l'embouti (2), respectivement.Punch (14) for stamping (2) according to Claim 2, characterized in that the pivotally mounted element (18) and the member which is movable in translation (22) each comprise a contact surface (38; 40). with the sliding surface (44) of the sliding element (28), each of said contact surfaces being located opposite the first (20) or the second bearing surface (24) for stamping ( 2), respectively. Poinçon (14) pour embouti (2) selon l'une des revendications 2 et 3, caractérisé en ce que la surface de glissement (44) de l'élément coulissant (28) comprend, à une extrémité, préférentiellement à l'opposé de l'actionneur, une portion de commande (48), inclinée par rapport à la direction de coulissement (K) dudit élément, destinée à déplacer l'élément monté pivotant (18) et l'élément monté mobile en translation (22), et une portion de verrouillage (38) desdits éléments.Punch (14) for stamping (2) according to one of claims 2 and 3, characterized in that the sliding surface (44) of the sliding element (28) comprises, at one end, preferentially the opposite of the actuator, a control portion (48) inclined with respect to the sliding direction (K) of said member for moving the pivotally mounted member (18) and the member movable in translation (22), and a locking portion (38) of said members. Poinçon (14) pour embouti (2) selon les revendications 3 et 4, caractérisé en ce que l'élément monté pivotant (18) comprend une pièce rapportée (52) située à l'opposé de la première surface d'appui (20), ladite pièce formant la surface de contact (38) dudit élément (18) coopérant avec la portion de commande (48) de la surface de glissement (44) de l'élément coulissant (28).Punch (14) for stamping (2) according to claims 3 and 4, characterized in that the pivotally mounted element (18) comprises an insert (52) located opposite the first bearing surface (20) said piece forming the contact surface (38) of said member (18) cooperating with the control portion (48) of the sliding surface (44) of the sliding member (28). Poinçon (14) pour embouti (2) selon la revendication 3 et l'une des revendications 4 et 5, caractérisé en ce que la surface de contact (40) de l'élément monté mobile en translation (22) comprend une portion (40') inclinée par rapport à la direction de translation (L) dudit élément, apte à coopérer avec la portion de commande (48) de la surface de glissement (44) de l'élément coulissant (28).Punch (14) for stamping (2) according to claim 3 and one of claims 4 and 5, characterized in that the contact surface (40) of the member movable in translation (22) comprises a portion (40). ') inclined relative to the translation direction (L) of said element, adapted to cooperate with the control portion (48) of the sliding surface (44) of the sliding member (28). Poinçon (14) pour embouti (2) selon l'une des revendications 1 à 6, caractérisé en ce que l'élément monté pivotant (18) comprend une surface de coulissement (36) en face de la première surface d'appui (20), ladite surface étant destinée à recevoir un coulisseau (32) portant la lame de renvoi (34).Punch (14) for stamping (2) according to one of claims 1 to 6, characterized in that the pivotally mounted element (18) comprises a sliding surface (36) facing the first bearing surface (20). ), said surface being intended to receive a slide (32) carrying the deflection blade (34). Outillage (12) de mise à forme d'embouti (2), notamment de carrosserie de véhicule automobile, comprenant un poinçon (14) pour recevoir l'embouti, caractérisé en ce que le poinçon est selon l'une des revendications 1 à 7, le bâti (16) étant un premier bâti, l'outillage (12) comprenant, en outre, un deuxième bâti (30) avec une lame de renvoi (34), cette dernière étant apte à coopérer avec la première surface d'appui (20) de l'élément monté pivotant (18) par rapprochement entre lesdits premier (16) et deuxième bâti (30).Tooling (12) for stamping (2), in particular motor vehicle bodywork, comprising a punch (14) for receiving the stamping, characterized in that the punch is according to one of claims 1 to 7 , the frame (16) being a first frame, the tool (12) comprising, in addition, a second frame (30) with a return blade (34), the latter being able to cooperate with the first bearing surface (20) of the pivotally mounted member (18) by approximation between said first (16) and second frame (30). Outillage (12) de mise à forme selon la revendication 8, caractérisé en ce que le poinçon (14) est selon la revendication 7, l'outillage (12) comprenant, en outre, un coulisseau (32) portant la lame de renvoi (34), ledit coulisseau étant apte à coulisser sur la surface de coulissement (36) de l'élément monté pivotant (18) du poinçon (14) en face de la première surface d'appui (20) en vue de la mise à forme du bord (4) de l'embouti (2)Tooling (12) for shaping according to claim 8, characterized in that the punch (14) is according to claim 7, the tool (12) further comprising a slide (32) carrying the deflection blade ( 34), said slide being slidable on the sliding surface (36) of the pivotally mounted member (18) of the punch (14) opposite the first bearing surface (20) for forming purposes. edge (4) of the stamping (2) Procédé de mise à forme d'un bord en contre dépouille (4) d'un embouti (2), notamment de carrosserie de véhicule automobile, comprenant les étapes suivantes : - réception de l'embouti (2) sur un poinçon (14) pour embouti ; - mise à forme d'un bord en contre dépouille (4) de l'embouti contre une première surface d'appui (20) pour l'embouti ;
caractérisé en ce que le poinçon (14) est selon l'une des revendications 1 à 7, et en ce que le procédé comprend, en outre, - après l'étape de réception de l'embouti (2), la commande de l'actionneur (26) de manière à amener les première (20) et deuxième (24) surface d'appui en contact avec l'embouti (2) ; et - après l'étape de mise à forme, la commande de l'actionneur (26) de manière à retirer les première (20) et deuxième (24) surface d'appui de leur contact avec l'embouti (2) en vue de pouvoir enlever ledit embouti. A method of shaping an undercut edge (4) of a stamp (2), in particular of a motor vehicle body, comprising the following steps: - Receiving the stamp (2) on a punch (14) for stamping; - Shaping an edge against the draft (4) of the pressed against a first bearing surface (20) for stamping;
characterized in that the punch (14) is according to one of claims 1 to 7, and in that the method further comprises after the step of receiving the stamping (2), the control of the actuator (26) so as to bring the first (20) and second (24) bearing surfaces in contact with the stamp (2 ); and after the forming step, controlling the actuator (26) so as to remove the first (20) and second (24) bearing surfaces from their contact with the stamp (2) in order to ability to remove said stamp.
EP16170262.6A 2015-06-03 2016-05-19 Punch for forming by deep drawing an undercut edge of the deep drawn piece Withdrawn EP3100795A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1555044A FR3036987B1 (en) 2015-06-03 2015-06-03 SHAFT PUNCH BY EMBOSSING AN EDGE INTO A BOTTOM STRIP.

Publications (1)

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EP3100795A1 true EP3100795A1 (en) 2016-12-07

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EP (1) EP3100795A1 (en)
FR (1) FR3036987B1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1044739A2 (en) * 1999-04-15 2000-10-18 Umix Co., Ltd. Negative angular forming dies and pressing apparatus thereof
US20080098792A1 (en) * 2006-10-27 2008-05-01 Nieschulz Daniel F Wedge activated rotating filler cam
EP2058061A1 (en) 2007-11-06 2009-05-13 Yourbusiness Co., Ltd. Negative-angle press-working die
EP2801417A1 (en) * 2012-01-04 2014-11-12 Lubo Industries. Inc Relief forming apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1044739A2 (en) * 1999-04-15 2000-10-18 Umix Co., Ltd. Negative angular forming dies and pressing apparatus thereof
US20080098792A1 (en) * 2006-10-27 2008-05-01 Nieschulz Daniel F Wedge activated rotating filler cam
EP2058061A1 (en) 2007-11-06 2009-05-13 Yourbusiness Co., Ltd. Negative-angle press-working die
EP2801417A1 (en) * 2012-01-04 2014-11-12 Lubo Industries. Inc Relief forming apparatus

Also Published As

Publication number Publication date
FR3036987A1 (en) 2016-12-09
FR3036987B1 (en) 2017-12-22

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