EP1238725A2 - Metal plate forming apparatus by pulling over a die or "form" - Google Patents

Metal plate forming apparatus by pulling over a die or "form" Download PDF

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Publication number
EP1238725A2
EP1238725A2 EP02290589A EP02290589A EP1238725A2 EP 1238725 A2 EP1238725 A2 EP 1238725A2 EP 02290589 A EP02290589 A EP 02290589A EP 02290589 A EP02290589 A EP 02290589A EP 1238725 A2 EP1238725 A2 EP 1238725A2
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EP
European Patent Office
Prior art keywords
frame
cylinder
jaw
vertical
jacks
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.)
Granted
Application number
EP02290589A
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German (de)
French (fr)
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EP1238725B1 (en
EP1238725A3 (en
Inventor
Gilles Chancerelle
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ACB
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ACB Pressure Systems
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Publication of EP1238725A2 publication Critical patent/EP1238725A2/en
Publication of EP1238725A3 publication Critical patent/EP1238725A3/en
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Publication of EP1238725B1 publication Critical patent/EP1238725B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D25/00—Working sheet metal of limited length by stretching, e.g. for straightening
    • B21D25/02—Working sheet metal of limited length by stretching, e.g. for straightening by pulling over a die

Definitions

  • the present invention relates to a machine for forming parts by the drawing process, on a tool or form.
  • a machine of this type is described in document FR-2 650 205.
  • This machine, or press consists of an elongated frame which has at its central part, a table receiving the tool or form.
  • the part to be formed is for example a sheet; this sheet is taken between the jaws two jaws to be stretched, beyond its elastic limit, and to be pressed on the form.
  • jaws are arranged transversely to the frame, on the side and of the tool and each of them is movable longitudinally and vertically, at using several pairs of oscillating cylinders: almost horizontal cylinders and almost vertical cylinders.
  • the horizontal cylinders are movable in an angular sector, on both sides on the other side of the longitudinal horizontal plane under the effect of the vertical cylinders, and the cylinders vertical are, in the same way, mobile in an angular sector on both sides from a plane perpendicular to the longitudinal horizontal plane under the effect of the jacks horizontal. This possibility of cylinder movement provides, for each jaw, ability to move virtually all-round.
  • each jaw is carried out by means of oscillating crutches, arranged in the median plane longitudinal and vertical of the frame.
  • Each stand is telescopic. It is articulated to one end of the frame and, on the side of the jaws, it is movable in a guide U-shaped. The telescopic part of the stand is secured to the jaw of so as to maintain a point of said jaw in the median vertical longitudinal plane guide.
  • the present invention provides an alternative solution to the problem of guidance jaws relative to the frame.
  • the machine, or press consists of a horizontal frame equipped at its central part with a tool or form, installed transversely with, on both sides on the other side of said tool, jaws each actuated by two pairs of jacks oscillating: a pair of horizontal cylinders, anchored at the corresponding end of said frame and a pair of vertical cylinders anchored at the lower end of the portion central of the chair-shaped frame, each jaw and its cradle being guided by report to said built so that one of their points is maintained in a plane longitudinal and vertical of said frame, the means for holding said point of each jaw and cradle, in said vertical longitudinal plane, consist of means for guide arranged on the one hand, directly on the cylinder of one of the cylinders of maneuver and, on the other hand, on the frame, so as to keep the axis of said cylinder in said vertical longitudinal plane.
  • the guide cylinder moves in the frame while remaining centered in the plane vertical longitudinal and its cylinder constitutes a kind of oscillating slide, at the on the one hand, his butt which is articulated on a chair under the central part of the frame, along an axis perpendicular to the vertical longitudinal plane and with a immobilization in translation, and, on the other hand, its mouth which is provided with pads diametrically opposed which cooperate with fitted sliding surfaces on the frame, which surfaces are in the form of plates arranged parallel to said vertical longitudinal plane.
  • the jaw guide cylinders are constituted by the vertical cylinders located for example on the same side of the frame, in the same vertical longitudinal plane of guide.
  • Each jaw is further articulated by its cradle, on the end of the rod of its guide cylinder, by means of a spindle whose axis is perpendicular to said cylinder rod and centered in the guide plane, that is to say the longitudinal plane vertical of the frame.
  • the axis of the vertical guide cylinder, for each jaw is arranged so that it passes close to the jaws of said jaw.
  • the other jaw operating cylinders i.e. other cylinders that the vertical guiding cylinders of the latter are connected to the frame and to their respective jaws, by means of patellar joints and / or universal joints of the gimbal type.
  • the frame mainly comprises a structure longitudinal made up of two large lateral beams in the form of a box, connected between them, and a chair which extends under the central part of said structure, which chair is provided with a sole allowing its anchoring on the slab, at the bottom of a pit for example.
  • the beam-like structure and the chair are preferably, especially in the case of a very large press, two separate sets; this modular design allows easy transport of said press, and assembly said assemblies on site is carried out for example by bolting.
  • the part upper longitudinal structure forming the frame can be at ground level for example ; in this case the upper surface of the frame is equipped at the level of the passage of the rods of the vertical cylinders, of movable decks which accompany the movement of said rods, providing some security for operators likely to circulate on said frame.
  • This machine comprises a frame 1 which extends longitudinally, and its part central unit is provided with a table 2 on which is fixed a tool or form 3 intended for shaping of a sheet 4 shown in thin dashed lines.
  • Frame 1 includes a horizontal longitudinal structure 5 on which is fixed the table 2 and a base or chair 6 arranged under said structure 5, in line with table 2.
  • the machine can be housed in a pit 7, fixed on slab 8, at the bottom of this pit.
  • the chair 6 has for this purpose a base 9 which is fixed to the slab 8 by appropriate means.
  • the lateral ends of the structure 5 are for example supported at means of crutches 10 which extend to the bottom of the pit 7.
  • the sheet 4 is pinched on its lateral edges in jaws 11, and its shaping on the tool or shape 3, is carried out by means of a pair of jaws 12 which bear said jaws.
  • These jaws 12 are arranged transversely on the side and other of the tool 3 and they are operated by means of oscillating cylinders arranged in pairs: cylinders 13 called horizontal cylinders and cylinders 14 called vertical cylinders.
  • jacks are in fact anchored on the cradles 15 which serve as a structure for support for jaws 12.
  • a pair of horizontal jacks 13 extends between each cradle 15 and yokes 16 located at the ends of the longitudinal structure 5 of the frame 1.
  • Each cylinder 13 is articulated at the level of a yoke 16 by means of a articulation 17 of the patellar type.
  • the articulation of the rod 18 of the jack 13 on the cradle 15 is effected by means of a universal joint 19 with two axes 19 'and 19 "which are perpendicular to each other and perpendicular to the axis of said rod 18.
  • Each cylinder 13 has an angular movement whose amplitude H depends on the stroke of the vertical cylinder 14 with which it is associated.
  • the vertical jacks 14 (14 A and 14 B ) oscillate under the effect of the horizontal jacks 13 with an amplitude V which depends on the travel of each of these jacks 13.
  • Each pair of vertical cylinders 14 comprises cylinders which are of two types: - a vertical cylinder 14 A which provides the connection between the cradle 15 and the chair 6 and - a vertical cylinder 14 B which, in addition to the connection function of the cradle 15 to chair 6, performs a function of guiding said cradle and consequently of the jaw 12, relative to the frame 1.
  • the connecting jacks 14 A are articulated on the lower part of the chair 6, by means of a patellar joint 20 which is mounted in a yoke secured to the base 9.
  • the rod of these cylinders 14 A is articulated on the cradle 15 by means of a patellar articulation 21 whose axis is, on the one hand, perpendicular to the axis of said cylinder 14 A and, on the other hand, located in the longitudinal vertical plane of the frame 1.
  • the jacks 14 B have a double function since they serve on the one hand for the operation of the jaws 12 and on the other hand for guiding these jaws relative to the frame 1.
  • the cylinder 22 of the cylinder 14 B is articulated at its bottom, on the lower end of the chair 6, around an axis 23 which is transverse.
  • This axis 23 is taken in the yoke 24 of the base 9, at the lower part of the chair 6, which yoke performs a relative transverse immobilization of the cylinder 22.
  • the articulation of the jack 14 B on the axis 23, allows it to oscillate in the vertical longitudinal plane 25.
  • the upper end or mouth of the cylinder 22 is provided with pads 26; these pads are arranged on either side of the rod 27 of the jack, diametrically opposite. They are fixed to the mouth of the jack, on its flange 28 for example, and they can also be fixed between them, transversely.
  • pads 26 each cooperate with sliding surfaces arranged in the frame 1.
  • These sliding surfaces consist of plates 29 which are suitably fixed on the structure 5 of the frame 1.
  • the assembly consisting of pads 26 and surfaces 29 forms a slide for each cylinder 14 B.
  • the plates 29 have dimensions adapted to the oscillation capacity of the cylinders 14 B.
  • the pads 26 are rectangular with a length which corresponds substantially to the diameter of the cylinder 32 of the jack and a height of the order of half of said length. This slide makes it possible to maintain the jack 14 B in the longitudinal vertical plane 25 of the frame 1.
  • the rod 27 of the jack 14 B is secured to the cradle 15 by means of a pin 31 which is perpendicular to the axis of said jack and which is located in the longitudinal vertical plane 25.
  • the cylinder 14 B is dimensioned accordingly.
  • Each jaw 12 moves around an oscillation point 32 which corresponds to the intersection between the axis of the spindle 31 and the axis 33 of the jacks 14 B.
  • the axis 33 of the cylinder 14 B passes at the level of the jaws 11, that is to say at the level of the pinching zone of the sheet metal 4 to be shaped.
  • the structure 5 of the frame 1 lends itself to this guiding of the vertical jacks.
  • She is consisting of two beams 35 in the form of boxes, parallel to each other, which extend over the entire length of the frame 1.
  • Each beam is in the vertical plane a set of jacks associated with a jaw; this set consisting of a horizontal cylinder 13 and a vertical cylinder 14.
  • Each longitudinal vertical plane passes substantially half-length of half the length of each jaw 12, so as to balance efforts.
  • the frame 1 in two elements: on one side the structure 5 with its two longitudinal beams 35, and on the other hand, the chair 6. These two elements can be assembled on site for example by bolting. The great length of the press also justifies the presence of crutches 10 located at each end of structure 5.
  • the upper part of the structure 5 of the frame 1 can be located at ground level.
  • plates 36 can be installed above the orifices 37 which allow the rods of the vertical jacks 14 A and 14 B to pass , which plates move directly under the effect of the rods of said cylinders. These plates 36 hide the oblong holes 37 and offer a certain security for the operators who circulate on the frame 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Paper (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Machine Tool Units (AREA)
  • Press Drives And Press Lines (AREA)

Abstract

Shaping machine comprises a frame (1) extending longitudinally either side of a tool (3) arranged transversally on the central part of the frame. Some jaws (12) are arranged either side of the tool, each driven by a quasi-horizontal jack (13) and a quasi-vertical jack (14). Each jaw incorporates a point (32) moving in a longitudinal vertical plane which is maintained in this plane by one of the maneuvering jacks acting on the jaw and in particular a vertical jack. The guidance jack (14) incorporates some pattens (26) arranged on the upper end of its cylinder (22), sliding on some vertical longitudinal plates (29) integral with the frame. The mounting (15) of the jaw is articulated on the end of an axis (31) that is perpendicular to the axis (33) of the jack which is in the guidance plane.

Description

La présente invention concerne une machine de formage de pièces par le procédé d'étirage, sur un outil ou forme.The present invention relates to a machine for forming parts by the drawing process, on a tool or form.

Ces machines sont notamment utilisées dans le domaine de l'aéronautique pour la confection de pièces du fuselage par exemple ou des pièces du bord d'attaque des ailes.These machines are used in particular in the aeronautics field for making fuselage pieces for example or leading edge pieces wings.

Une machine de ce type est décrite dans le document FR-2 650 205. Cette machine, ou presse, est constituée d'un bâti allongé qui comporte à sa partie centrale, une table recevant l'outil ou forme.A machine of this type is described in document FR-2 650 205. This machine, or press, consists of an elongated frame which has at its central part, a table receiving the tool or form.

La pièce à former est par exemple une tôle ; cette tôle est prise entre les mors de deux mâchoires pour être étirée, au-delà de sa limite élastique, et être emboutie sur la forme.The part to be formed is for example a sheet; this sheet is taken between the jaws two jaws to be stretched, beyond its elastic limit, and to be pressed on the form.

Ces mâchoires sont disposées transversalement par rapport au bâti, de part et d'autre de l'outil et chacune d'elles est mobile longitudinalement et verticalement, au moyen de plusieurs couples de vérins oscillants : des vérins quasi horizontaux et des vérins quasi verticaux.These jaws are arranged transversely to the frame, on the side and of the tool and each of them is movable longitudinally and vertically, at using several pairs of oscillating cylinders: almost horizontal cylinders and almost vertical cylinders.

Les vérins horizontaux sont mobiles dans un secteur angulaire, de part et d'autre du plan horizontal longitudinal sous l'effet des vérins verticaux, et les vérins verticaux sont, de la même façon, mobiles dans un secteur angulaire de part et d'autre d'un plan perpendiculaire au plan horizontal longitudinal sous l'effet des vérins horizontaux. Cette possibilité de mouvement des vérins procure, pour chaque mâchoire, une capacité de déplacement pratiquement tous azimuts.The horizontal cylinders are movable in an angular sector, on both sides on the other side of the longitudinal horizontal plane under the effect of the vertical cylinders, and the cylinders vertical are, in the same way, mobile in an angular sector on both sides from a plane perpendicular to the longitudinal horizontal plane under the effect of the jacks horizontal. This possibility of cylinder movement provides, for each jaw, ability to move virtually all-round.

Dans le document précité, le guidage de chaque mâchoire par rapport au bâti est réalisé au moyen de béquilles oscillantes, disposées dans le plan médian longitudinal et vertical du bâti. Chaque béquille est télescopique. Elle est articulée à l'une des extrémités du bâti et, du côté des mâchoires, elle est mobile dans un guide en forme de U. La partie télescopique de la béquille est solidaire de la mâchoire de façon à maintenir un point de ladite mâchoire dans le plan longitudinal vertical médian de guidage.In the aforementioned document, the guidance of each jaw relative to the frame is carried out by means of oscillating crutches, arranged in the median plane longitudinal and vertical of the frame. Each stand is telescopic. It is articulated to one end of the frame and, on the side of the jaws, it is movable in a guide U-shaped. The telescopic part of the stand is secured to the jaw of so as to maintain a point of said jaw in the median vertical longitudinal plane guide.

La présente invention propose une solution alternative au problème du guidage des mâchoires par rapport au bâti.The present invention provides an alternative solution to the problem of guidance jaws relative to the frame.

Cette solution permet de réduire le nombre de pièces en mouvement sur cette machine et les mâchoires conservent, une très grande liberté de mouvement, en particulier dans les trajectoires d'enveloppement de l'outil ou forme.This solution reduces the number of moving parts on this machine and the jaws retain a very great freedom of movement, in particularly in the tool or shape wrapping trajectories.

Selon l'invention, la machine, ou presse, est constituée d'un bâti horizontal muni à sa partie centrale, d'un outil ou forme, installé transversalement avec, de part et d'autre dudit outil, des mâchoires actionnées chacune par deux paires de vérins oscillants : une paire de vérins horizontaux, ancrés à l'extrémité correspondante dudit bâti et une paire de vérins verticaux ancrés à l'extrémité inférieure de la portion centrale du bâti en forme de chaise, chaque mâchoire et son berceau étant guidés par rapport audit bâti de façon à ce que l'un de leurs points soit maintenu dans un plan longitudinal et vertical dudit bâti, les moyens de maintien dudit point de chaque mâchoire et berceau, dans ledit plan longitudinal vertical, consistent en des moyens de guidage aménagés d'une part, directement sur le cylindre de l'un des vérins de manoeuvre et, d'autre part, sur le bâti, de façon à conserver l'axe dudit cylindre dans ledit plan longitudinal vertical.According to the invention, the machine, or press, consists of a horizontal frame equipped at its central part with a tool or form, installed transversely with, on both sides on the other side of said tool, jaws each actuated by two pairs of jacks oscillating: a pair of horizontal cylinders, anchored at the corresponding end of said frame and a pair of vertical cylinders anchored at the lower end of the portion central of the chair-shaped frame, each jaw and its cradle being guided by report to said built so that one of their points is maintained in a plane longitudinal and vertical of said frame, the means for holding said point of each jaw and cradle, in said vertical longitudinal plane, consist of means for guide arranged on the one hand, directly on the cylinder of one of the cylinders of maneuver and, on the other hand, on the frame, so as to keep the axis of said cylinder in said vertical longitudinal plane.

Le vérin de guidage évolue dans le bâti en restant centré dans le plan longitudinal vertical et son cylindre constitue une sorte de glissière oscillante, au moyen d'une part, de son cul qui est articulé sur une chaise sous la partie centrale du bâti, selon un axe perpendiculaire au plan longitudinal vertical et avec une immobilisation en translation, et, d'autre part, de sa gueule qui est munie de patins diamétralement opposés qui coopèrent avec des surfaces de glissement aménagées sur le bâti, lesquelles surfaces sont en forme de plaques disposées parallèlement audit plan longitudinal vertical.The guide cylinder moves in the frame while remaining centered in the plane vertical longitudinal and its cylinder constitutes a kind of oscillating slide, at the on the one hand, his butt which is articulated on a chair under the central part of the frame, along an axis perpendicular to the vertical longitudinal plane and with a immobilization in translation, and, on the other hand, its mouth which is provided with pads diametrically opposed which cooperate with fitted sliding surfaces on the frame, which surfaces are in the form of plates arranged parallel to said vertical longitudinal plane.

Les vérins de guidage des mâchoires sont constitués par les vérins verticaux situés par exemple d'un même côté du bâti, dans le même plan longitudinal vertical de guidage.The jaw guide cylinders are constituted by the vertical cylinders located for example on the same side of the frame, in the same vertical longitudinal plane of guide.

Chaque mâchoire est de plus articulée par son berceau, sur l'extrémité de la tige de son vérin de guidage, au moyen d'une broche dont l'axe est perpendiculaire à ladite tige de vérin et centré dans le plan de guidage c'est-à-dire le plan longitudinal vertical du bâti. De plus l'axe du vérin vertical de guidage, pour chaque mâchoire, est disposé de telle façon qu'il passe à proximité des mors de ladite mâchoire.Each jaw is further articulated by its cradle, on the end of the rod of its guide cylinder, by means of a spindle whose axis is perpendicular to said cylinder rod and centered in the guide plane, that is to say the longitudinal plane vertical of the frame. In addition, the axis of the vertical guide cylinder, for each jaw, is arranged so that it passes close to the jaws of said jaw.

Les autres vérins de manoeuvre des mâchoires, c'est-à-dire les vérins autres que les vérins verticaux de guidage de ces dernières, sont reliés au bâti et à leurs mâchoires respectives, au moyen d'articulations rotuliennes et/ou de joints universels du type cardan.The other jaw operating cylinders, i.e. other cylinders that the vertical guiding cylinders of the latter are connected to the frame and to their respective jaws, by means of patellar joints and / or universal joints of the gimbal type.

Toujours selon l'invention, le bâti comprend principalement une structure longitudinale constituée de deux grandes poutres latérales en forme de caisson, reliées entre elles, et une chaise qui s'étend sous la partie centrale de ladite structure, laquelle chaise est munie d'une semelle permettant son ancrage sur la dalle, au fond d'une fosse par exemple. Still according to the invention, the frame mainly comprises a structure longitudinal made up of two large lateral beams in the form of a box, connected between them, and a chair which extends under the central part of said structure, which chair is provided with a sole allowing its anchoring on the slab, at the bottom of a pit for example.

La structure en forme de poutres et la chaise constituent de préférence, surtout dans le cas d'une presse de très grande dimension, deux ensembles séparés ; cette conception modulaire permet de faciliter le transport de ladite presse, et l'assemblage desdits ensembles sur site s'effectue par exemple par boulonnage. De plus, la partie supérieure de la structure longitudinale formant le bâti peut se situer au niveau du sol par exemple ; dans ce cas la surface supérieure du bâti est équipée au niveau du passage des tiges des vérins verticaux, de platelages mobiles qui accompagnent le mouvement desdites tiges, offrant une certaine sécurité pour les opérateurs susceptibles de circuler sur ledit bâti.The beam-like structure and the chair are preferably, especially in the case of a very large press, two separate sets; this modular design allows easy transport of said press, and assembly said assemblies on site is carried out for example by bolting. In addition, the part upper longitudinal structure forming the frame can be at ground level for example ; in this case the upper surface of the frame is equipped at the level of the passage of the rods of the vertical cylinders, of movable decks which accompany the movement of said rods, providing some security for operators likely to circulate on said frame.

L'invention sera encore détaillée à l'aide de la description suivante et des dessins annexés, donnés à titre indicatif et dans lesquels :

  • la figure 1 est une élévation d'une machine selon l'invention montrant schématiquement une moitié de la machine selon une coupe 1-1 de la figure 2 ;
  • la figure 2 est une élévation de la machine selon une coupe 2-2 de la figure 1 ;
  • la figure 3 est une vue schématique partielle d'un vérin vertical selon une coupe 3-3 de la figure 2.
The invention will be further detailed with the aid of the following description and the appended drawings, given by way of indication and in which:
  • Figure 1 is an elevation of a machine according to the invention schematically showing a half of the machine in a section 1-1 of Figure 2;
  • Figure 2 is an elevation of the machine according to a section 2-2 of Figure 1;
  • FIG. 3 is a partial schematic view of a vertical cylinder in a section 3-3 in FIG. 2.

La machine représentée sur les figures correspond dans son principe, à celle décrite dans le document FR-2 650 205 précité.The machine shown in the figures corresponds in principle to that described in the aforementioned document FR-2 650 205.

Cette machine comprend un bâti 1 qui s'étend longitudinalement, et sa partie centrale est munie d'une table 2 sur laquelle est fixé un outil ou forme 3 destiné au façonnage d'une tôle 4 représentée en traits mixtes fins. Le bâti 1 comprend une structure longitudinale horizontale 5 sur laquelle est fixée la table 2 et une embase ou chaise 6 disposée sous ladite structure 5, au droit de la table 2.This machine comprises a frame 1 which extends longitudinally, and its part central unit is provided with a table 2 on which is fixed a tool or form 3 intended for shaping of a sheet 4 shown in thin dashed lines. Frame 1 includes a horizontal longitudinal structure 5 on which is fixed the table 2 and a base or chair 6 arranged under said structure 5, in line with table 2.

On remarque figure 1, que la machine peut être logée dans une fosse 7, fixée sur la dalle 8, au fond de cette fosse. La chaise 6 comporte à cet effet une embase 9 qui est fixée sur la dalle 8 par des moyens appropriés.Note in Figure 1, that the machine can be housed in a pit 7, fixed on slab 8, at the bottom of this pit. The chair 6 has for this purpose a base 9 which is fixed to the slab 8 by appropriate means.

Les extrémités latérales de la structure 5 sont par exemple soutenues au moyen de béquilles 10 qui s'étendent jusqu'au fond de la fosse 7.The lateral ends of the structure 5 are for example supported at means of crutches 10 which extend to the bottom of the pit 7.

La tôle 4 est pincée sur ses rebords latéraux dans des mors 11, et son façonnage sur l'outil ou forme 3, s'effectue au moyen d'une paire de mâchoires 12 qui portent lesdits mors. Ces mâchoires 12 sont disposées transversalement de part et d'autre de l'outil 3 et elles sont manoeuvrées au moyen de vérins oscillants disposés par couples : des vérins 13 dénommés vérins horizontaux et des vérins 14 dénommés vérins verticaux. The sheet 4 is pinched on its lateral edges in jaws 11, and its shaping on the tool or shape 3, is carried out by means of a pair of jaws 12 which bear said jaws. These jaws 12 are arranged transversely on the side and other of the tool 3 and they are operated by means of oscillating cylinders arranged in pairs: cylinders 13 called horizontal cylinders and cylinders 14 called vertical cylinders.

Ces vérins sont en fait ancrés sur les berceaux 15 qui servent de structure de support pour les mâchoires 12.These jacks are in fact anchored on the cradles 15 which serve as a structure for support for jaws 12.

Une paire de vérins horizontaux 13 s'étend entre chaque berceau 15 et des chapes 16 situées aux extrémités de la structure longitudinale 5 du bâti 1.A pair of horizontal jacks 13 extends between each cradle 15 and yokes 16 located at the ends of the longitudinal structure 5 of the frame 1.

Chaque vérin 13 est articulé au niveau d'une chape 16 au moyen d'une articulation 17 du type rotulienne. L'articulation de la tige 18 du vérin 13 sur le berceau 15 s'effectue au moyen d'un joint universel 19 à deux axes 19' et 19" qui sont perpendiculaires entre eux et perpendiculaires à l'axe de ladite tige 18.Each cylinder 13 is articulated at the level of a yoke 16 by means of a articulation 17 of the patellar type. The articulation of the rod 18 of the jack 13 on the cradle 15 is effected by means of a universal joint 19 with two axes 19 'and 19 "which are perpendicular to each other and perpendicular to the axis of said rod 18.

Chaque vérin 13 a un débattement angulaire dont l'amplitude H dépend de la course du vérin vertical 14 auquel il est associé.Each cylinder 13 has an angular movement whose amplitude H depends on the stroke of the vertical cylinder 14 with which it is associated.

De la même façon, les vérins verticaux 14 (14A et 14B) oscillent sous l'effet des vérins horizontaux 13 avec une amplitude V qui dépend de la course de chacun de ces vérins 13.In the same way, the vertical jacks 14 (14 A and 14 B ) oscillate under the effect of the horizontal jacks 13 with an amplitude V which depends on the travel of each of these jacks 13.

Chaque paire de vérins verticaux 14 comprend des vérins qui sont de deux types : - un vérin vertical 14A qui assure la liaison entre le berceau 15 et la chaise 6 et - un vérin vertical 14B qui, en plus de la fonction de liaison du berceau 15 à la chaise 6, réalise une fonction de guidage dudit berceau et par conséquent de la mâchoire 12, par rapport au bâti 1.Each pair of vertical cylinders 14 comprises cylinders which are of two types: - a vertical cylinder 14 A which provides the connection between the cradle 15 and the chair 6 and - a vertical cylinder 14 B which, in addition to the connection function of the cradle 15 to chair 6, performs a function of guiding said cradle and consequently of the jaw 12, relative to the frame 1.

Les vérins de liaison 14A sont articulés sur la partie inférieure de la chaise 6, au moyen d'une articulation rotulienne 20 qui est montée dans une chape solidaire de l'embase 9.The connecting jacks 14 A are articulated on the lower part of the chair 6, by means of a patellar joint 20 which is mounted in a yoke secured to the base 9.

La tige de ces vérins 14A est articulée sur le berceau 15 au moyen d'une articulation rotulienne 21 dont l'axe est, d'une part, perpendiculaire à l'axe dudit vérin 14A et, d'autre part, situé dans le plan vertical longitudinal du bâti 1.The rod of these cylinders 14 A is articulated on the cradle 15 by means of a patellar articulation 21 whose axis is, on the one hand, perpendicular to the axis of said cylinder 14 A and, on the other hand, located in the longitudinal vertical plane of the frame 1.

On retrouve figure 3, l'articulation rotulienne 21 installée sur le berceau 15, située à l'extrémité de la tige du vérin 14A.We find Figure 3, the patellar joint 21 installed on the cradle 15, located at the end of the cylinder rod 14 A.

Toujours figure 3, on remarque aussi l'extrémité du vérin horizontal 13 correspondant et en particulier le joint universel 19 qui relie la tige 18 de ce vérin au berceau 15 de la mâchoire 12.Still in Figure 3, we also notice the end of the horizontal cylinder 13 corresponding and in particular the universal joint 19 which connects the rod 18 of this jack to the cradle 15 of jaw 12.

Les vérins 14B ont une double fonction puisqu'ils servent d'une part à la manoeuvre des mâchoires 12 et d'autre part au guidage de ces mâchoires par rapport au bâti 1.The jacks 14 B have a double function since they serve on the one hand for the operation of the jaws 12 and on the other hand for guiding these jaws relative to the frame 1.

Le cylindre 22 du vérin 14B est articulé au niveau de son cul, sur l'extrémité inférieure de la chaise 6, autour d'un axe 23 qui est transversal. Cet axe 23 est pris dans la chape 24 de l'embase 9, à la partie inférieure de la chaise 6, laquelle chape réalise une immobilisation relative transversale du cylindre 22. L'articulation du vérin 14B sur l'axe 23, lui permet d'osciller dans le plan longitudinal vertical 25.The cylinder 22 of the cylinder 14 B is articulated at its bottom, on the lower end of the chair 6, around an axis 23 which is transverse. This axis 23 is taken in the yoke 24 of the base 9, at the lower part of the chair 6, which yoke performs a relative transverse immobilization of the cylinder 22. The articulation of the jack 14 B on the axis 23, allows it to oscillate in the vertical longitudinal plane 25.

L'extrémité supérieure ou gueule du cylindre 22 est munie de patins 26 ; ces patins sont disposés de part et d'autre de la tige 27 du vérin, diamétralement opposés. Ils sont fixés à la gueule du vérin, sur sa collerette 28 par exemple, et ils peuvent également être fixés entre eux, transversalement.The upper end or mouth of the cylinder 22 is provided with pads 26; these pads are arranged on either side of the rod 27 of the jack, diametrically opposite. They are fixed to the mouth of the jack, on its flange 28 for example, and they can also be fixed between them, transversely.

Ces patins 26 coopèrent chacun avec des surfaces de glissement aménagées dans le bâti 1. Ces surfaces de glissement sont constituées de plaques 29 qui sont fixées de façon appropriée sur la structure 5 du bâti 1. L'ensemble constitué des patins 26 et des surfaces 29 forme une glissière pour chaque vérin 14B. Les plaques 29 ont des dimensions adaptées à la capacité d'oscillation des vérins 14B. Les patins 26 sont rectangulaires avec une longueur qui correspond sensiblement au diamètre du cylindre 32 du vérin et une hauteur de l'ordre de la moitié de ladite longueur. Cette glissière permet de maintenir le vérin 14B dans le plan vertical longitudinal 25 du bâti 1.These pads 26 each cooperate with sliding surfaces arranged in the frame 1. These sliding surfaces consist of plates 29 which are suitably fixed on the structure 5 of the frame 1. The assembly consisting of pads 26 and surfaces 29 forms a slide for each cylinder 14 B. The plates 29 have dimensions adapted to the oscillation capacity of the cylinders 14 B. The pads 26 are rectangular with a length which corresponds substantially to the diameter of the cylinder 32 of the jack and a height of the order of half of said length. This slide makes it possible to maintain the jack 14 B in the longitudinal vertical plane 25 of the frame 1.

La tige 27 du vérin 14B est solidaire du berceau 15 au moyen d'une broche 31 qui est perpendiculaire à l'axe dudit vérin et qui est située dans le plan vertical longitudinal 25.The rod 27 of the jack 14 B is secured to the cradle 15 by means of a pin 31 which is perpendicular to the axis of said jack and which is located in the longitudinal vertical plane 25.

Compte-tenu de sa double fonction, le vérin 14B est dimensionné en conséquence.Given its dual function, the cylinder 14 B is dimensioned accordingly.

Chaque mâchoire 12 évolue autour d'un point d'oscillation 32 qui correspond à l'intersection entre l'axe de la broche 31 et l'axe 33 des vérins 14B.Each jaw 12 moves around an oscillation point 32 which corresponds to the intersection between the axis of the spindle 31 and the axis 33 of the jacks 14 B.

Ce point 32 apparaít figure 1. Ce point 32 évolue dans le plan longitudinal vertical 25.This point 32 appears in figure 1. This point 32 evolves in the longitudinal plane vertical 25.

On remarque aussi que l'axe 33 du vérin 14B passe au niveau des mors 11 c'est-à-dire au niveau de la zone de pincement de la tôle 4 à façonner.We also note that the axis 33 of the cylinder 14 B passes at the level of the jaws 11, that is to say at the level of the pinching zone of the sheet metal 4 to be shaped.

La structure 5 du bâti 1 se prête à ce guidage des vérins verticaux. Elle est constituée de deux poutres 35 en forme de caissons, parallèles entre elles, qui s'étendent sur toute la longueur du bâti 1. Chaque poutre se situe dans le plan vertical d'un ensemble de vérins associés à une mâchoire ; cet ensemble étant constitué d'un vérin horizontal 13 et d'un vérin vertical 14. Chaque plan vertical longitudinal passe sensiblement à mi-longueur de la moitié de la longueur de chaque mâchoire 12, de façon à équilibrer les efforts.The structure 5 of the frame 1 lends itself to this guiding of the vertical jacks. She is consisting of two beams 35 in the form of boxes, parallel to each other, which extend over the entire length of the frame 1. Each beam is in the vertical plane a set of jacks associated with a jaw; this set consisting of a horizontal cylinder 13 and a vertical cylinder 14. Each longitudinal vertical plane passes substantially half-length of half the length of each jaw 12, so as to balance efforts.

Selon la dimension de la machine, qui peut être relativement importante, on peut prévoir de réaliser le bâti 1 en deux éléments : d'un côté la structure 5 avec ses deux poutres longitudinales 35, et d'un autre côté, la chaise 6. Ces deux éléments peuvent être réunis sur site par exemple par boulonnage. La grande longueur de la presse justifie également la présence des béquilles 10 situées à chaque extrémité de la structure 5.Depending on the size of the machine, which can be relatively large, we can plan to make the frame 1 in two elements: on one side the structure 5 with its two longitudinal beams 35, and on the other hand, the chair 6. These two elements can be assembled on site for example by bolting. The great length of the press also justifies the presence of crutches 10 located at each end of structure 5.

Comme représenté figure 1, la partie supérieure de la structure 5 du bâti 1 peut se situer au niveau du sol. Pour faciliter l'intervention d'opérateurs sur la machine, et éviter les incidents, des platelages 36 peuvent être installés au-dessus des orifices 37 qui permettent le passage des tiges des vérins verticaux 14A et 14B, lesquels platelages se déplacent directement sous l'effet des tiges desdits vérins. Ces platelages 36 masquent les orifices oblongs 37 et offrent une certaine sécurité pour les opérateurs qui circulent sur le bâti 1.As shown in Figure 1, the upper part of the structure 5 of the frame 1 can be located at ground level. To facilitate the intervention of operators on the machine, and to avoid incidents, plates 36 can be installed above the orifices 37 which allow the rods of the vertical jacks 14 A and 14 B to pass , which plates move directly under the effect of the rods of said cylinders. These plates 36 hide the oblong holes 37 and offer a certain security for the operators who circulate on the frame 1.

Claims (9)

Machine de formage de pièces en tôle, par étirage sur un outil ou « forme », lequel outil est disposé transversalement au centre d'un bâti (1) qui s'étend longitudinalement, des mâchoires (12) sont disposées de part et d'autre de l'outil, montées chacune sur un berceau (15) qui est actionné par deux paires de vérins oscillants dont - une paire de vérins quasi-horizontaux (13) ancrés à l'extrémité correspondante dudit bâti et - une paire de vérins quasi-verticaux (14) ancrés à l'extrémité inférieure de la portion centrale du bâti qui s'étend en forme de chaise (6), lesquelles mâchoires et leurs berceaux sont guidés par rapport audit bâti de telle façon que l'un de leurs points soit maintenu dans un plan longitudinal vertical,
caractérisée en ce que lesdits moyens de maintien d'un point de chaque mâchoire (12) et berceau (15) dans le plan longitudinal vertical (25), consistent en des moyens de guidage aménagés d'une part, directement sur le cylindre de l'un des vérins de manoeuvre de chaque mâchoire (12) et, d'autre part, sur le bâti (1), de façon à conserver en permanence l'axe dudit vérin dans ledit plan longitudinal vertical (25).Machine for forming sheet metal parts, by drawing on a tool or "shape", which tool is arranged transversely in the center of a frame (1) which extends longitudinally, jaws (12) are arranged on either side another of the tool, each mounted on a cradle (15) which is actuated by two pairs of oscillating jacks, of which - a pair of quasi-horizontal jacks (13) anchored at the corresponding end of said frame and - a pair of quasi jacks verticals (14) anchored to the lower end of the central portion of the frame which extends in the form of a chair (6), which jaws and their cradles are guided relative to said frame so that one of their points is maintained in a vertical longitudinal plane,
characterized in that said means for holding a point of each jaw (12) and cradle (15) in the vertical longitudinal plane (25), consist of guide means arranged on the one hand, directly on the cylinder of the 'one of the actuating cylinders of each jaw (12) and, on the other hand, on the frame (1), so as to permanently keep the axis of said cylinder in said vertical longitudinal plane (25). Machine de formage selon la revendication 1, caractérisée en ce que le cylindre (22) du vérin de guidage (14B) constitue une sorte de glissière oscillante, le cul dudit cylindre étant articulé sur une broche (23) solidaire de la chaise (6) selon un axe perpendiculaire au plan longitudinal vertical (25), avec une immobilisation relative en translation, et la gueule dudit cylindre (22) étant munie de patins (26) diamétralement opposés l'un par rapport à l'autre, qui coopèrent avec des surfaces de glissement en forme de plaques (29), solidaires de la structure (5) du bâti (1), lesquelles plaques sont parallèles audit plan (25).Forming machine according to claim 1, characterized in that the cylinder (22) of the guide cylinder (14B) constitutes a kind of oscillating slide, the bottom of said cylinder being articulated on a spindle (23) integral with the chair (6) along an axis perpendicular to the vertical longitudinal plane (25), with a relative immobilization in translation, and the mouth of said cylinder (22) being provided with pads (26) diametrically opposite one with respect to the other, which cooperate with sliding surfaces in the form of plates (29), integral with the structure (5) of the frame (1), which plates are parallel to said plane (25). Machine de formage selon la revendication 2, caractérisée en ce que les vérins de guidage des mâchoires (12) sont constitués par les vérins quasi-verticaux (14B), situés dans le plan longitudinal vertical (25) du bâti (1).Forming machine according to claim 2, characterized in that the jaw guide cylinders (12) are constituted by the quasi-vertical cylinders (14 B ), located in the vertical longitudinal plane (25) of the frame (1). Machine de formage selon l'une quelconque des revendications 1 à 3, caractérisée en ce que chaque mâchoire (12) est articulée au niveau de son berceau (15) sur l'extrémité de la tige (27) des vérins de guidage (14B), au moyen d'une broche (31) qui est perpendiculaire à ladite tige, et qui est centrée dans le plan longitudinal vertical (25) du bâti.Forming machine according to any one of Claims 1 to 3, characterized in that each jaw (12) is articulated at its cradle (15) on the end of the rod (27) of the guide jacks (14 B ), by means of a pin (31) which is perpendicular to said rod, and which is centered in the vertical longitudinal plane (25) of the frame. Machine de formage selon la revendication 4, caractérisée en ce que l'axe (33) du vérin de guidage (14B), pour chaque mâchoire (12), est disposé de telle façon qu'il passe à proximité des mors de ladite mâchoire. Forming machine according to claim 4, characterized in that the axis (33) of the guide cylinder (14 B ), for each jaw (12), is arranged in such a way that it passes close to the jaws of said jaw . Machine de formage selon la revendication 3, caractérisée en ce que les vérins (13, 14A) servant à la manoeuvre des mâchoires (12), c'est-à-dire les vérins autres que les vérins (14B) de guidage de ces dernières, sont reliés au bâti (1) et à leurs mâchoires respectives, au moyen d'articulations rotuliennes et/ou de joints universels du type cardans.Forming machine according to claim 3, characterized in that the jacks (13, 14 A ) used to operate the jaws (12), i.e. jacks other than the guide jacks (14 B ) the latter are connected to the frame (1) and their respective jaws, by means of patellar joints and / or universal joints of the cardan type. Machine de formage selon l'une quelconque des revendications 1 à 6, caractérisée en ce que le bâti est constitué principalement d'une structure longitudinale (5) constituée de deux grandes poutres (35) reliées entre elles, et d'une chaise (6) qui s'étend sous la partie centrale de ladite structure, laquelle chaise est munie d'une semelle (9) permettant son ancrage sur le sol et en particulier sur la dalle (8) disposée au fond d'une fosse (7).Forming machine according to any one of Claims 1 to 6, characterized in that the frame consists mainly of a longitudinal structure (5) consisting of two large beams (35) connected together, and of a chair (6 ) which extends under the central part of said structure, which chair is provided with a sole (9) allowing its anchoring on the ground and in particular on the slab (8) disposed at the bottom of a pit (7). Machine de formage selon la revendication 7, caractérisée en ce que la structure (5) et la chaise (6) constituent, dans le cas de presse de très grande dimension, deux ensembles séparés, lesquels sont assemblables par boulonnage par exemple, et des béquilles (10) sont prévues pour soutenir chaque extrémité de ladite structure (5).Forming machine according to claim 7, characterized in that the structure (5) and the chair (6) constitute, in the case of very large presses, two separate assemblies, which can be assembled by bolting for example, and crutches (10) are provided to support each end of said structure (5). Machine de formage selon la revendication 7, caractérisée en ce que la partie supérieure des poutres (35) de la structure (5) constitue un plancher qui peut se situer au niveau du sol, et les passages des tiges des vérins verticaux (14) sont équipés de platelages (36) mobiles qui accompagnent le mouvement desdites tiges, masquant les orifices oblongs (37) de passage desdites tiges.Forming machine according to claim 7, characterized in that the upper part of the beams (35) of the structure (5) constitutes a floor which can be situated at ground level, and the passages of the rods of the vertical cylinders (14) are equipped with movable plates (36) which accompany the movement of said rods, masking the oblong orifices (37) for passage of said rods.
EP02290589A 2001-03-09 2002-03-08 Metal plate forming apparatus by pulling over a die or "form" Expired - Lifetime EP1238725B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0103239 2001-03-09
FR0103239A FR2821771B1 (en) 2001-03-09 2001-03-09 MACHINE FOR FORMING PARTS FROM SHEET BY STRETCHING ON A TOOL, OR "SHAPE"

Publications (3)

Publication Number Publication Date
EP1238725A2 true EP1238725A2 (en) 2002-09-11
EP1238725A3 EP1238725A3 (en) 2003-01-15
EP1238725B1 EP1238725B1 (en) 2007-08-01

Family

ID=8860935

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02290589A Expired - Lifetime EP1238725B1 (en) 2001-03-09 2002-03-08 Metal plate forming apparatus by pulling over a die or "form"

Country Status (7)

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US (1) US6742371B2 (en)
EP (1) EP1238725B1 (en)
CN (1) CN1248793C (en)
DE (1) DE60221454T2 (en)
ES (1) ES2290257T3 (en)
FR (1) FR2821771B1 (en)
RU (1) RU2274506C2 (en)

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CN108638298A (en) * 2018-05-09 2018-10-12 中国建筑第五工程局有限公司 A kind of the side form system and application method of straddle type monorail rail tracks

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US7340933B2 (en) * 2006-02-16 2008-03-11 Rohr, Inc. Stretch forming method for a sheet metal skin segment having compound curvatures
CN103121646B (en) * 2013-03-06 2015-05-06 宁波天益齿轴齿轮有限公司 Jack fixed in desert
CN103130143B (en) * 2013-03-06 2015-05-06 宁波天益齿轴齿轮有限公司 Jack
CN113020389B (en) * 2021-02-08 2022-10-18 中国重型机械研究院股份公司 Skin stretcher
CN113020388B (en) * 2021-02-08 2023-03-10 中国重型机械研究院股份公司 Four-degree-of-freedom transverse skin stretcher
CN113020387B (en) * 2021-02-08 2023-03-10 中国重型机械研究院股份公司 Skin stretcher with three transfer and one transfer characteristics
CN117225969B (en) * 2023-11-14 2024-03-15 中国重型机械研究院股份公司 Follow-up cover plate for skin stretcher and use method

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CN108638298A (en) * 2018-05-09 2018-10-12 中国建筑第五工程局有限公司 A kind of the side form system and application method of straddle type monorail rail tracks

Also Published As

Publication number Publication date
US20020124618A1 (en) 2002-09-12
EP1238725B1 (en) 2007-08-01
FR2821771A1 (en) 2002-09-13
ES2290257T3 (en) 2008-02-16
EP1238725A3 (en) 2003-01-15
CN1248793C (en) 2006-04-05
US6742371B2 (en) 2004-06-01
CN1381317A (en) 2002-11-27
FR2821771B1 (en) 2003-08-29
RU2274506C2 (en) 2006-04-20
DE60221454D1 (en) 2007-09-13
DE60221454T2 (en) 2008-04-17

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