EP0387121A1 - Clamping device for a long piece such as a punch, a die or such a tool on a table of a press bending machine - Google Patents

Clamping device for a long piece such as a punch, a die or such a tool on a table of a press bending machine Download PDF

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Publication number
EP0387121A1
EP0387121A1 EP19900400497 EP90400497A EP0387121A1 EP 0387121 A1 EP0387121 A1 EP 0387121A1 EP 19900400497 EP19900400497 EP 19900400497 EP 90400497 A EP90400497 A EP 90400497A EP 0387121 A1 EP0387121 A1 EP 0387121A1
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EP
European Patent Office
Prior art keywords
tool
flange
heel
face
fixing
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
EP19900400497
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German (de)
French (fr)
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EP0387121B1 (en
Inventor
Jean Paul Henri Treillet
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Amada Europe SA
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Amada Europe SA
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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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
    • B21D5/0209—Tools therefor
    • B21D5/0236—Tool clamping
    • 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
    • B21D5/0209—Tools therefor

Definitions

  • the present invention relates to an instantaneous fixing device, in accordance with safety standards, for various elongated parts and in particular for folding tools, to be fixed on the deck of a press brake.
  • the tool can be, for example, a punch or a press brake die hooked or fixed securely to the apron or to one or more intermediate tool holders. It must be adapted to the work carried out on the press brake, so it must be changed frequently.
  • the heel When suspended, avoid dropping the tool in the event of loosening; for this purpose, the heel can be provided with a groove or a shoulder, while the straps have a reverse form. In this case, it can only be mounted or removed laterally by sliding it, which has drawbacks, especially when the tool to be changed is surrounded on each side by other tools.
  • the present invention aims to achieve a tool fixing device which has all the safety guarantees, which allows the front introduction in the hanging position and which ensures instant clamping with a simple gesture of the operator to tilt it to its working position, triggering by this gesture the automatic clamping of the clamp.
  • the subject of the invention is a rigid fixing device for an elongated part such as a punch or die or similar tool on a press brake apron or on intermediate tool holders of the type comprising a movable clamping flange. disposed opposite one of the faces of the corresponding support and able to clamp the tool fixing heel against the latter, which heel has a recess intended to be placed against the edge of the support of this tool, characterized in that than : - the clamp is pivotally mounted around a longitudinal axis mounted in bearings carried by tool support, - on its rear face facing the face of the tool support, this flange has a relief in the form of a shoulder, located in the region of the pivot axis, - on its front face turned towards the clamping flange, the tool fixing heel has a profile hollow similar to the relief provided on the clamping flange of the corresponding fixing device, and leaving an end nose, intended to be applied against a bearing surface provided on the corresponding face of the flange, beyond the relief,
  • a tool of the type in question can be fixed in place very quickly and with great security, thanks to a simple gesture which can be accomplished either by a man or by a robot. Indeed, the rotation of the tool-flange assembly automatically places the tool in the working position.
  • the removal of the tool it can be carried out in two stages as a safety measure, namely: a first stage corresponding to the loosening of the flange but with retention of the tool, and a second stage corresponding to the extraction of the tool on the front by a rotational movement opposite to that of the assembly.
  • the arrangement is such that the movable blocking member is maintained in its retracted position when the flange is open and it automatically goes into the locked position when the tool-flange assembly has pivoted completely in the direction of the closing.
  • this blocking member consists of a rotary cam of such shape that by turning around its axis, its contact with the flange is practically linear and tends to spread the flange gradually.
  • this blocking member is actuated automatically when the tool is pushed, which ensures instant clamping of this tool.
  • the unlocking control is carried out by a lever.
  • the levers of the various fixing devices, provided on the same press brake apron can act independently of each other or be connected together and connected to a general control.
  • the present invention also relates to a press brake tool, which is specially arranged to be able to be mounted thereon by means of a fixing device as defined above.
  • the invention also relates to a press brake equipped with such a fixing device.
  • the upper deck 1 receives a series of intermediate tool holders 2 fixed with flanges 3 tightened strongly by screws 4.
  • This traditional means of clamping is, in the '' state of the art, most often reproduced for fixing the punch 5 on the tool holder 2.
  • the heel of the tool is pinched between the front face 19 of the tool holder 2 and a similar flange to the flange 3.
  • the clamping of the tool fixing flange 6 is ensured in a different way. Instead of being tightened by screws, it is articulated around a longitudinal axis 7 parallel to the free edge of the tool holder. This axis is formed by two journals rotating in bearings 8a and 8b fixed on the tool holder 2.
  • this flange 6 On its rear face 10, which is turned opposite the tool holder 2, this flange 6 has a shoulder 9 which can be of polygonal or cylindrical shape and which is located in the region of the pivot axis 7. On either side of this shoulder 9, there are flat surfaces 11a and 11b which will be brought into contact respectively with a blocking member and with the front face of the tool 5. However, the surface 11a is separated from the shoulder 19 by the surface 22, the role of which will be explained later.
  • the locking member may consist of a rotary locking cam 12 and the arrangement is such that the flange 6 acts like a lever to ensure the tightening of the tool.
  • the upper edge 24 of the flange 6 is a cylindrical surface of radius R2 centered on the axis 7 or an equivalent polygonal surface. As will be explained later, this surface is intended to serve as a bearing surface for the cam 12 when the latter is in the retracted position.
  • the tool 5 has at its upper part a heel 15 whose face 5a located opposite the flange 6 has a relief 13 opposite and substantially the same profile as the shoulder 9 of the flange 6. At the upper end of the corresponding face of the heel 15, this recess 13 leaves a nose 21.
  • the opposite face 17 of the recess 18, located at the base of the heel 15, is extended at its upper end by a cylindrical surface 14 of radius R1 which is tangent thereto and the center of which is at the same distance from the face 17 and the shoulder 18 of the tool as the axis of rotation 7 of the faces 19 and 20 of the tool holder.
  • the reference faces of the tool and the tool holder coincide when the tool is clamped.
  • the nose 21 of the tool rests on the surface 22 of the flange, forming a bearing surface, when the tool is inserted into the tool holder.
  • the locking cam 12 is integral with a pin 25 itself connected to a clamping control member.
  • This cam 12 has such a shape that it can be brought, by rotation, into a retracted position above the flange 6, position in which a part 32a of its periphery rests against the bearing surface 24 provided on the flange, while in the clamping position its active face 30 exerts its force against the face 11a of this flange.
  • a particular embodiment of this cam as shown in FIG. 7, consists of a cone 30 limited by two planar faces 32a and 32b and by a cylindrical surface 31.
  • the axis of rotation 25 is parallel to the axis 34 of the cone and located at a certain distance from this axis.
  • Such a cam has the property of always having a rectilinear generator in a vertical plane whatever the angle of rotation, this generator gradually moving away from the base of the cone during rotation.
  • Figures 5 and 6 show, by way of nonlimiting example, an actuation mode of the locking cam 12.
  • the axis 25 of rotation of this cam passes through the tool holder 2 and is extended by an eccentric crank 35
  • On this crankcase is coupled a spring 36 housed around a guide 37 articulated on an axis 38.
  • the orientation of the crankcase 35 relative to the cam 12 is such that the torque on the cam varies in inverse function compression of the spring. In this way, the locking cam exerts its maximum force in the clamping position while it only very slightly presses on the face 24 of the flange when it is in the retracted position.
  • a lever 44 freely rotating about the axis 25 and bearing on a crank 39 secured to the crank 35 for arming spring.
  • This solution is particularly advantageous for operating the levers of several fixing devices using a general control connected to the axes 42.
  • the cams, and consequently the cranks 35 take varying positions from one tool holder to another due to the various factors of dispersion of the parts making up the mechanical assembly.
  • the fixing device according to the invention can be used either to rigidly suspend an object, or to fix it on its base. In both cases, it allows installation and removal after a switch to the operator, which also has the advantage of avoiding interference or shock with other parts located in the same plane and close to the object handled.
  • the invention also relates to tools, intended to equip press brakes, and whose heel is specially arranged so that these tools can be fixed in place by means of devices fixing according to the invention.
  • the particular characteristics of the heel for fixing these tools are then those of the tool 5 previously described.
  • the present invention further relates to press brakes equipped with fastening devices as described above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Punching Or Piercing (AREA)

Abstract

Device for the instant clamping of a press-bending machine tool on it tool holder allowing its positioning and extraction from the front of the machine without having to displace the adjacent tools. …<??>It comprises a clamp (6) articulated about a longitudinal pin (7), the said clamp having a shoulder (9) on which is hooked the heel of the tool which has an appropriate shape. When, after having hooked the tool, it is pushed from its position of equilibrium towards the rear, it drives the clamp in rotation by the contact of the surfaces (21 and 22), which operates a locking cam (12) which ensures the tightening of the clamp on the tool in the working position. In order to unclamp the tool, it suffices to retract the cam; the tool then remains hooked and can be extracted by forward pivoting. …<??>The invention can be used for the attachment and immobilization of any suspended part or any part standing on a base. …<IMAGE>…

Description

La présente invention a pour objet un dispositif de fixation instantanée, conforme aux normes de sécurité, pour des pièces diverses de forme allongée et en particulier pour des outils de pliage, devant être fixés sur le tablier d'une presse-plieuse.The present invention relates to an instantaneous fixing device, in accordance with safety standards, for various elongated parts and in particular for folding tools, to be fixed on the deck of a press brake.

L'outil peut être, par exemple, un poinçon ou une matrice de presse-plieuse accroché ou fixé solidement au tablier ou à un ou plusieurs porte-outils intermédiaires. Il doit être adapté aux travaux exécutés sur la presse-­plieuse, donc être changé fréquemment.The tool can be, for example, a punch or a press brake die hooked or fixed securely to the apron or to one or more intermediate tool holders. It must be adapted to the work carried out on the press brake, so it must be changed frequently.

Le plus souvent, il comporte un talon appliqué contre une face verticale du porte-outil et serré par des brides à l'aide d'une pluralité de vis. Lorsqu'il est suspendu, il faut éviter toute chute de l'outil en cas de desserrage; à cet effet, le talon peut être muni d'une gorge ou d'un épaulement, tandis que les brides ont une forme inverse. Dans ce cas, on ne peut le monter ou l'extraire que latéralement en le faisant coulisser, ce qui présente des inconvénients, notamment lorsque l'outil à changer se trouve environné de chaque côté par d'autres outils.Most often, it has a heel applied against a vertical face of the tool holder and clamped by flanges using a plurality of screws. When suspended, avoid dropping the tool in the event of loosening; for this purpose, the heel can be provided with a groove or a shoulder, while the straps have a reverse form. In this case, it can only be mounted or removed laterally by sliding it, which has drawbacks, especially when the tool to be changed is surrounded on each side by other tools.

De plus, le temps de serrage de toutes les vis est long. A titre de palliatif, les vis peuvent être remplacées par des systèmes hydrauliques ou pneumatiques, comme décrits dans les brevets FR 2.339.485 et DE 35 24 694, ce qui permet de gagner du temps sur le serrage mais ne remédie pas aux difficultés d'extraction. De plus ces dispositifs sont chers, ils sont contraignants car ils doivent répondre à des normes sévères de sécurité afin de parer au danger de chute dû à une fuite accidentelle de fluide.In addition, the tightening time of all screws is long. As a palliative, the screws can be replaced by hydraulic or pneumatic systems, as described in patents FR 2,339,485 and DE 35 24 694, which saves time on tightening but does not remedy the difficulties of extraction. In addition, these devices are expensive, they are restrictive because they must meet strict safety standards in order to ward off the danger of falling due to an accidental leakage of fluid.

C'est pourquoi la présente invention a pour but de réaliser un dispositif de fixation de l'outil qui possède toutes les garanties de sécurité, qui permet l'introduction frontale en position d'accrochage et qui assure le bridage instantané par un simple geste de l'opérateur pour le faire basculer jusqu'à sa position de travail, déclenchant par ce geste le serrage automatique de la bride.This is why the present invention aims to achieve a tool fixing device which has all the safety guarantees, which allows the front introduction in the hanging position and which ensures instant clamping with a simple gesture of the operator to tilt it to its working position, triggering by this gesture the automatic clamping of the clamp.

A cet effet, l'invention a pour objet un dispositif de fixation rigide pour pièce de forme allongée telle que poinçon ou matrice ou outil analogue sur un tablier de presse-plieuse ou sur des porte-outils intermédiaires du type comportant une bride mobile de serrage disposée en regard de l'une des faces du support correspondant et apte à serrer contre celle-ci le talon de fixation de l'outil, lequel talon comporte un décrochement destiné à être placé contre le chant du support de cet outil, charactérisé en ce que :
- la bride de serrage est montée pivotante autour d'un axe longitudinal monté dans des paliers portés par le support de l'outil,
- sur sa face arrière tournée vers la face du support de l'outil, cette bride comporte un relief en forme d'épaulement, situé dans la zone de l'axe de pivotement,
- sur sa face avant tournée vers la bride de serrage, le talon de fixation de l'outil comporte un creux de profil semblable au relief prévu sur la bride de serrage du dispositif de fixation correspondant, et laissant subsister un nez d'extrêmité, destiné à s'appliquer contre une portée d'appui prévue sur la face correspondante de la bride, au-delà du relief,
- à l'extrêmité de sa face opposée, le talon de fixation de l'outil présente une surface cylindrique convexe ou un chanfrein inscrit dans cette surface,
- un organe mobile de blocage est apte à être placé contre la partie supérieure de la face arrière de la bride, qui est tournée vers la face du support de l'outil après que le talon de fixation de celui-ci ait été mis en place, ce qui assure le serrage de la bride sur le talon de l'outil.To this end, the subject of the invention is a rigid fixing device for an elongated part such as a punch or die or similar tool on a press brake apron or on intermediate tool holders of the type comprising a movable clamping flange. disposed opposite one of the faces of the corresponding support and able to clamp the tool fixing heel against the latter, which heel has a recess intended to be placed against the edge of the support of this tool, characterized in that than :
- the clamp is pivotally mounted around a longitudinal axis mounted in bearings carried by tool support,
- on its rear face facing the face of the tool support, this flange has a relief in the form of a shoulder, located in the region of the pivot axis,
- on its front face turned towards the clamping flange, the tool fixing heel has a profile hollow similar to the relief provided on the clamping flange of the corresponding fixing device, and leaving an end nose, intended to be applied against a bearing surface provided on the corresponding face of the flange, beyond the relief,
- at the end of its opposite face, the tool fixing heel has a convex cylindrical surface or a chamfer inscribed in this surface,
a movable blocking member is capable of being placed against the upper part of the rear face of the flange, which faces the face of the support for the tool after the fixing heel has been put in place. , which ensures the clamping of the flange on the heel of the tool.

Grâce à cet agencement un outil du type en cause peut être fixé en place très rapidement et avec une grande sécurité, grâce à un geste simple qui peut être accompli soit par un homme, soit par un robot. En effet la rotation de l'ensemble outil-bride place automatiquement l'outil en position de travail.Thanks to this arrangement, a tool of the type in question can be fixed in place very quickly and with great security, thanks to a simple gesture which can be accomplished either by a man or by a robot. Indeed, the rotation of the tool-flange assembly automatically places the tool in the working position.

Quant à la dépose de l'outil, elle peut être effectuée en deux temps par mesure de sécurité, à savoir : un premier temps correspondant au desserrage de la bride mais avec retenue de l'outil, et un deuxième temps correspondant à l'extraction de l'outil sur le devant par un mouvement de rotation en sens inverse de celui du montage.As for the removal of the tool, it can be carried out in two stages as a safety measure, namely: a first stage corresponding to the loosening of the flange but with retention of the tool, and a second stage corresponding to the extraction of the tool on the front by a rotational movement opposite to that of the assembly.

Dans une forme de réalisatiuon avantageuse du présent dispositif, l'agencement est tel que l'organe mobile de blocage est maintenu dans sa position escamotée lorsque la bride est ouverte et il se met automatiquement en position de verrouillage lorsque l'ensemble outil-bride a pivoté complètement dans le sens de la fermeture.In an advantageous form of realization of the present device, the arrangement is such that the movable blocking member is maintained in its retracted position when the flange is open and it automatically goes into the locked position when the tool-flange assembly has pivoted completely in the direction of the closing.

Selon une caractéristique particulière, cet organe de blocage consiste en une came rotative de forme telle qu'en tournant autour de son axe, son contact avec la bride soit pratiquement linéaire et tende à écarter la bride progressivement.According to a particular characteristic, this blocking member consists of a rotary cam of such shape that by turning around its axis, its contact with the flange is practically linear and tends to spread the flange gradually.

Par ailleurs l'agencement est tel que cet organe de blocage est actionné automatiquement lorsqu'on pousse l'outil, ce qui assure le bridage instantané de cet outil.Furthermore, the arrangement is such that this blocking member is actuated automatically when the tool is pushed, which ensures instant clamping of this tool.

Dans une réalisation particulière, la commande de débridage est effectuée par un levier. Dans un tel cas, les leviers des différents dispositifs de fixation, prévus sur un même tablier de presse-plieuse, peuvent agir indépendamment les uns des autres ou être raccordés entre eux et reliés à une commande générale.In a particular embodiment, the unlocking control is carried out by a lever. In such a case, the levers of the various fixing devices, provided on the same press brake apron, can act independently of each other or be connected together and connected to a general control.

La présente invention a également pour objet un outil pour presse-plieuse, lequel est spécialement agencé pour pouvoir être monté sur celle-ci au moyen d'un dispositif de fixation tel que défini précédemment. Cependant l'invention a encore pour objet une presse-­plieuse équipée d'un tel dispositif de fixation.The present invention also relates to a press brake tool, which is specially arranged to be able to be mounted thereon by means of a fixing device as defined above. However, the invention also relates to a press brake equipped with such a fixing device.

D'autres caractéristiques et avantages du dispositif de fixation selon l'invention apparaîtront encore à travers la description qui suit d'un exemple de réalisation donné à titre indicatif et non limitatif en référence aux dessins annexés sur lesquels :

  • La figure 1 représente, vu de profil, à titre d'exemple, le montage d'un poinçon de pliage sur son porte-outil au moyen d'un dispositif de fixation selon l'invention.
  • La figure 2 est une vue de face avant d'un tel ensemble.
  • La figure 3 représente le dispositif lorsque la bride est desserrée, le poinçon étant en position dite de sécurité.
  • La figure 4 représente l'extraction de l'outil avec la particularité d'un levier d'armement situé à l'avant.
  • La figure 5 montre, vu de l'arrière, un système d'actionnement de la came en position verrouillée par un ressort; le levier d'armement du ressort étant solidaire de la came constituant l'organe de blocage et ce levier étant situé à l'avant, comme sur la figure 4.
  • La figure 6 montre, vu de l'arrière, un système d'actionnement d'une telle came en position déverrouillée, le levier d'armement du ressort tournant librement sur l'axe de la came comme sur les figures 1 et 3.
  • La figure 7 illustre une réalisation particulière de la came constituant l'organe de blocage.
Other characteristics and advantages of the fixing device according to the invention will become more apparent from the following description of an exemplary embodiment given by way of non-limiting example with reference to the attached drawings in which:
  • Figure 1 shows, seen in profile, by way of example, the mounting of a folding punch on its tool holder by means of a fixing device according to the invention.
  • Figure 2 is a front view of such an assembly.
  • Figure 3 shows the device when the flange is loose, the punch being in the so-called safety position.
  • Figure 4 shows the extraction of the tool with the particularity of an arming lever located at the front.
  • FIG. 5 shows, seen from the rear, a system for actuating the cam in the position locked by a spring; the lever for arming the spring being integral with the cam constituting the locking member and this lever being located at the front, as in FIG. 4.
  • FIG. 6 shows, seen from the rear, a system for actuating such a cam in the unlocked position, the cocking lever of the spring rotating freely on the axis of the cam as in FIGS. 1 and 3.
  • Figure 7 illustrates a particular embodiment of the cam constituting the locking member.

Comme représenté sur les figures 1, 2, 3 et 4,le tablier supérieur 1 reçoit une série de porte-outils intermédiaires 2 fixés à l'aide de brides 3 serrées fortement par des vis 4. Ce moyen traditionnel de bridage est, dans l'état actuel de la technique, reproduit le plus souvent pour la fixation du poinçon 5 sur le porte-outil 2. Dans ce cas, le talon de l'outil est pincé entre la face avant 19 du porte-outil 2 et une bride analogue à la bride 3.As shown in Figures 1, 2, 3 and 4, the upper deck 1 receives a series of intermediate tool holders 2 fixed with flanges 3 tightened strongly by screws 4. This traditional means of clamping is, in the '' state of the art, most often reproduced for fixing the punch 5 on the tool holder 2. In this case, the heel of the tool is pinched between the front face 19 of the tool holder 2 and a similar flange to the flange 3.

Par contre, dans le dispositif selon l'invention, le serrage de la bride 6 de fixation de l'outil est assuré de façon différente. Au lieu d'être serrée par des vis, elle est articulée autour d'un axe longitudinal 7 parallèle au bord libre du porte-outil. Cet axe est formé par deux tourillons tournant dans des paliers 8a et 8b fixés sur le porte-outil 2.On the other hand, in the device according to the invention, the clamping of the tool fixing flange 6 is ensured in a different way. Instead of being tightened by screws, it is articulated around a longitudinal axis 7 parallel to the free edge of the tool holder. This axis is formed by two journals rotating in bearings 8a and 8b fixed on the tool holder 2.

Sur sa face arrière 10, qui est tournée en regard du porte-outil 2, cette bride 6 possède un épaulement 9 qui peut être de forme polygonale ou cylindrique et qui est situé dans la zone de l'axe 7 de pivotement. De part et d'autre de cet épaulement 9, il existe des surfaces planes 11a et 11b qui seront mises respectivement en contact avec un organe de blocage et avec la face frontale de l'outil 5. Cependant la surface 11a est séparée de l'épaulement 19 par la surface 22, dont le rôle sera explicité plus loin.On its rear face 10, which is turned opposite the tool holder 2, this flange 6 has a shoulder 9 which can be of polygonal or cylindrical shape and which is located in the region of the pivot axis 7. On either side of this shoulder 9, there are flat surfaces 11a and 11b which will be brought into contact respectively with a blocking member and with the front face of the tool 5. However, the surface 11a is separated from the shoulder 19 by the surface 22, the role of which will be explained later.

L'organe de blocage peut consister en une came rotative 12 de verrouillage et l'agencement est tel que la bride 6 agit à la façon d'un levier pour assurer le serrage de l'outil. Par ailleurs, le chant supérieur 24 de la bride 6 est une surface cylindrique de rayon R2 centrée sur l'axe 7 ou une surface polygonale équivalente. Comme il sera expliqué plus loin, cette surface est destinée à servir de surface d'appui pour la came 12 lorsque celle-ci est en position escamotée.The locking member may consist of a rotary locking cam 12 and the arrangement is such that the flange 6 acts like a lever to ensure the tightening of the tool. Furthermore, the upper edge 24 of the flange 6 is a cylindrical surface of radius R2 centered on the axis 7 or an equivalent polygonal surface. As will be explained later, this surface is intended to serve as a bearing surface for the cam 12 when the latter is in the retracted position.

L'outil 5 possède à sa partie supérieure un talon 15 dont la face 5a située en regard de la bride 6 présente un relief 13 inverse et sensiblement de même profil que l'épaulement 9 de la bride 6. A l'extrémité supérieure de la face correspondante du talon 15, ce creux 13 laisse subsister un nez 21. La face opposée 17 du décrochement 18, situé à la base du talon 15, se prolonge, à son extrémité supérieure par une surface cylindrique 14 de rayon R1 qui lui est tangente et dont le centre est à la même distance de la face 17 et de l'épaulement 18 de l'outil que l'axe de rotation 7 des faces 19 et 20 du porte-outil.The tool 5 has at its upper part a heel 15 whose face 5a located opposite the flange 6 has a relief 13 opposite and substantially the same profile as the shoulder 9 of the flange 6. At the upper end of the corresponding face of the heel 15, this recess 13 leaves a nose 21. The opposite face 17 of the recess 18, located at the base of the heel 15, is extended at its upper end by a cylindrical surface 14 of radius R1 which is tangent thereto and the center of which is at the same distance from the face 17 and the shoulder 18 of the tool as the axis of rotation 7 of the faces 19 and 20 of the tool holder.

De cette manière, les faces de référence de l'outil et du porte-outil coïncident lorsque l'outil est bridé. En outre, le nez 21 de l'outil s'appuie sur la surface 22 de la bride, formant portée d'appui, lorsque l'outil est introduit dans le porte-outil.In this way, the reference faces of the tool and the tool holder coincide when the tool is clamped. In addition, the nose 21 of the tool rests on the surface 22 of the flange, forming a bearing surface, when the tool is inserted into the tool holder.

La came de verrouillage 12 est solidaire d'un axe 25 lui-même relié à un organe de commande du bridage. Cette came 12 a une telle forme qu'elle puisse être amenée, par rotation, dans une position escamotée au dessus de la bride 6, position dans laquelle une partie 32a de sa périphérie repose contre la surface d'appui 24 prévue sur la bride, tandis qu'en position de serrage sa face active 30 exerce son effort contre la face 11a de cette bride.The locking cam 12 is integral with a pin 25 itself connected to a clamping control member. This cam 12 has such a shape that it can be brought, by rotation, into a retracted position above the flange 6, position in which a part 32a of its periphery rests against the bearing surface 24 provided on the flange, while in the clamping position its active face 30 exerts its force against the face 11a of this flange.

Une réalisation particulière de cette came, telle que représentée figure 7, consiste en un cône 30 limité par deux faces planes 32a et 32b et par une surface cylindrique 31. L'axe de rotation 25 est parallèle à l'axe 34 du cône et situé à une certaine distance de cet axe. Une telle came a la propriété de posséder toujours une génératrice rectiligne dans un plan vertical quel que soit l'angle de rotation, cette génératrice s'éloignant progressivement de la base du cône au cours de la rotation.A particular embodiment of this cam, as shown in FIG. 7, consists of a cone 30 limited by two planar faces 32a and 32b and by a cylindrical surface 31. The axis of rotation 25 is parallel to the axis 34 of the cone and located at a certain distance from this axis. Such a cam has the property of always having a rectilinear generator in a vertical plane whatever the angle of rotation, this generator gradually moving away from the base of the cone during rotation.

Les figures 5 et 6 représentent, à titre d'exemple non limitatif, un mode d'actionnement de la came de verrouillage 12. L'axe 25 de rotation de cette came traverse le porte-outil 2 et se prolonge par un manneton excentré 35. Sur ce manneton est attelé un ressort 36 logé autour d'un guide 37 articulé sur un axe 38. Dans cette réalisation, l'orientation du manneton 35 par rapport à la came 12 est telle que le couple sur la came varie en fonction inverse de la compression du ressort. De la sorte, la came de verrouillage exerce son effort maximum en position de serrage tandis qu'elle n'appuie que très légèrement sur la face 24 de la bride quand elle est en position escamotée.Figures 5 and 6 show, by way of nonlimiting example, an actuation mode of the locking cam 12. The axis 25 of rotation of this cam passes through the tool holder 2 and is extended by an eccentric crank 35 On this crankcase is coupled a spring 36 housed around a guide 37 articulated on an axis 38. In this embodiment, the orientation of the crankcase 35 relative to the cam 12 is such that the torque on the cam varies in inverse function compression of the spring. In this way, the locking cam exerts its maximum force in the clamping position while it only very slightly presses on the face 24 of the flange when it is in the retracted position.

On voit donc que, pour monter l'outil, on l'introduit frontalement et par dessous, comme représenté sur la figure 4, puis on le fait pivoter d'avant en arrière jusqu'à ce qu'il soit accroché comme représenté sur la figure 3. Pour obtenir le bridage de l'outil comme représenté sur la figure 4, il suffit de continuer à faire pivoter l'outil selon la flèche F. En effet, le nez 21 de l'extrémité supérieure de la face avant du talon 15 fait alors pression sur la surface d'appui 22 prévue sur la face arrière 10 de la bride, ce qui l'amène à pivoter avec l'outil dans le même sens. Lors de la dernière phase de ce mouvement, l'extrémité supérieure de la bride 6 se trouve amenée en avant de la position de la came de serrage 12. En conséquence, cette dernière se trouve liberée et sous l'action du ressort 36, elle tourne sur elle-même pour s'engager derrière la surface 11a de la bride 6. Ceci assure donc le serrage automatique du talon de fixation 15 de l'outil, la bride 6 agissant alors à la façon d'un levier, comme déjà indiqué précédemment.We therefore see that, to mount the tool, we introduce it frontally and from below, as shown in Figure 4, then rotate it back and forth until it is hooked as shown in Figure 3. To obtain the clamping of the tool as shown in Figure 4, simply continue to rotate the tool according to arrow F. Indeed, the nose 21 of the upper end of the front face of the heel 15 then presses on the bearing surface 22 provided on the rear face 10 of the flange, this which causes it to pivot with the tool in the same direction. During the last phase of this movement, the upper end of the flange 6 is brought forward of the position of the clamping cam 12. Consequently, the latter is released and under the action of the spring 36, it turns on itself to engage behind the surface 11a of the flange 6. This therefore ensures the automatic tightening of the fixing heel 15 of the tool, the flange 6 then acting as a lever, as already indicated previously.

Pour le débridage de l'outil on peut concevoir une variété de modes différents de commande car il suffit de faire tourner la came 12 en sens inverse de celui du verrouillage tout en armant le ressort 36. On peut, par exemple, utiliser un levier situé soit en avant soit en arrière du porte-outil. La manoeuvre de ce levier peut être effectuée soit isolément soit en le reliant aux leviers similaires des dispositifs identiques de fixation qui sont montés sur le même support d'outil. Dans ce dernier cas, il est possible de prévoir une commande générale.For unclamping the tool, a variety of different control modes can be devised because it suffices to rotate the cam 12 in the opposite direction to that of locking while arming the spring 36. One can, for example, use a lever located either in front of or behind the tool holder. The operation of this lever can be carried out either individually or by connecting it to similar levers of identical fixing devices which are mounted on the same tool support. In the latter case, it is possible to provide a general order.

Dans une première réalisation particulière de l'invention, comme représenté sur les figures 4 et 5, il est prévu notamment que ce levier 41 puisse prendre trois positions, à savoir :

  • a) Une première position de desserrage, obtenue lorsqu'on arme le ressort 36 en tournant la came 12 au-­delà du point mort constitué par l'alignement des axes 25, 35 et 38. Dans cette position stable, l'arète 43 de la came 12 vient s'encastrer derrière la bride avec un jeu autorisant le glissement latéral de l'outil.
  • b) Une deuxième position d'extraction, dans laquelle la face 32a de la came est amenée, par rotation dans une position parallèle à la surface d'appui 24 prévue sur la bride, de façon à s'appuyer sur elle en autorisant la rotation de cette bride et, par suite, l'extraction frontale de l'outil.
  • c) La troisième position du levier est celle qu'il prend automatiquement sous l'effet du ressort, solidairement avec la came, lorsque l'outil est bridé.
In a first particular embodiment of the invention, as shown in FIGS. 4 and 5, provision is made in particular for this lever 41 to be able to take three positions, namely:
  • a) A first loosening position, obtained when the spring 36 is armed by turning the cam 12 beyond the neutral point formed by the alignment of the axes 25, 35 and 38. In this stable position, the edge 43 of the cam 12 is fitted behind the flange with a clearance allowing the lateral sliding of the tool.
  • b) A second extraction position, in which the face 32a of the cam is brought, by rotation to a position parallel to the bearing surface 24 provided on the flange, so as to bear on it while allowing rotation of this flange and, consequently, the front extraction of the tool.
  • c) The third position of the lever is that which it automatically takes under the effect of the spring, solidly with the cam, when the tool is clamped.

Dans une autre réalisation particulière de l'invention, comme représenté sur les figures 1, 3 et 6, il est prévu un levier 44 tournant librement autour de l'axe 25 et prenant appui sur un manneton 39 solidaire du manneton 35 pour l'armement du ressort. Cette solution est particulièrement avantageuse pour manoeuvrer les leviers de plusieurs dispositifs de fixation à l'aide d'une commande générale reliée aux axes 42. En effet, en position de bridage, les cames, et par conséquent les mannetons 35, prennent des positions variant d'un porte-­outil à l'autre en raison des divers facteurs de dispersion des pièces constituant l'ensemble mécanique.In another particular embodiment of the invention, as shown in Figures 1, 3 and 6, there is provided a lever 44 freely rotating about the axis 25 and bearing on a crank 39 secured to the crank 35 for arming spring. This solution is particularly advantageous for operating the levers of several fixing devices using a general control connected to the axes 42. In fact, in the clamping position, the cams, and consequently the cranks 35, take varying positions from one tool holder to another due to the various factors of dispersion of the parts making up the mechanical assembly.

Les exemples cités ne sont pas limitatifs et l'on peut concevoir tout autre moyen pour armer le ressort.The examples given are not limiting and one can conceive of any other means for arming the spring.

Il est évident également que, pour verrouiller la bride, on pourrait utiliser une came rotative d'un autre type ou d'autres moyens sans sortir du cadre de l'invention. Ainsi il serait possible de prévoir un verrou mobile comportant une rampe de blocage.It is also obvious that, to lock the flange, a rotary cam of another type or other means could be used without departing from the scope of the invention. Thus it would be possible to provide a movable lock comprising a blocking ramp.

Le dispositif de fixation selon l'invention peut être utilisé soit pour suspendre rigidement un objet, soit pour le fixer sur son socle. Dans les deux cas, il permet la pose et la dépose après un basculement vers l'opérateur, ce qui a également pour avantage d'éviter les interférences ou les chocs avec d'autres pièces situées dans le même plan et à proximité de l'objet manipulé.The fixing device according to the invention can be used either to rigidly suspend an object, or to fix it on its base. In both cases, it allows installation and removal after a switch to the operator, which also has the advantage of avoiding interference or shock with other parts located in the same plane and close to the object handled.

Il convient de noter que les opérations de pose et de dépose d'un outil, qui sont permises par le présent dispositif de fixation, sont particulièrement adaptées à une manipulation par robot du fait qu'elles ne nécessitent qu'un seul geste simple et précis.It should be noted that the operations of laying and removing a tool, which are permitted by the present fixing device, are particularly suitable for manipulation by robot because they require only one simple and precise gesture. .

Par ailleurs, ainsi qu'il a déjà été indiqué, l'invention a également pour objet des outils, destinés à équiper des presses-plieuses, et dont le talon est spécialement agencé pour que ces outils puissent être fixés en place au moyen de dispositifs de fixation selon l'invention. Les caractéristiques particulières du talon de fixation de ces outils sont alors celles de l'outil 5 précédemment décrit. Enfin, la présente invention a en outre pour objet des presses-plieuses équipées de dispositifs de fixation tels que décrits précédemment.Furthermore, as already indicated, the invention also relates to tools, intended to equip press brakes, and whose heel is specially arranged so that these tools can be fixed in place by means of devices fixing according to the invention. The particular characteristics of the heel for fixing these tools are then those of the tool 5 previously described. Finally, the present invention further relates to press brakes equipped with fastening devices as described above.

Claims (11)

1. Dispositif de fixation rigide pour pièce de forme allongée telle que poinçon ou matrice ou outil analogue sur un tablier de presse-plieuse ou sur des porte-outils intermédiaires du type comportant une bride mobile de serrage disposée en regard de l'une des faces du support correspondant et apte à serrer contre celle-ci le talon de fixation de l'outil, lequel talon comporte un décrochement destiné à être placé contre le chant du support de cet outil, caractérisé en ce que :
- la bride (6) de serrage est montée pivotante autour d'un axe longitudinal (7) monté dans des paliers (8a, 8b) portés par le support de l'outil,
- sur sa face arrière (10) tournée vers la face (19) du support de l'outil (5), cette bride comporte un relief (9) en forme d'épaulement, situé dans la zone de l'axe (7) de pivotement,
- sur sa face avant (5a) tournée vers la bride de serrage (6), le talon (15) de fixation de l'outil (5) comporte un creux (13) de profil semblable au relief (9) prévu sur la bride de serrage (6) du dispositif de fixation correspondant, et laissant subsister un nez (21) d'extrêmité, destiné à s'appliquer contre une portée d'appui (22) prévue sur la face correspondante de la bride (6), au-delà du relief (9),
- à l'extrêmité de sa face opposée (17), le talon (15) de fixation de l'outil (5) présente une surface cylindrique convexe (14) ou un chanfrein inscrit dans cette surface,
- un organe mobile de blocage est apte à être placé contre la partie supérieure (11a) de la face arrière (10) de la bride (6), qui est tournée vers la face (19) du support de l'outil (5) après que le talon de fixation de celui-ci ait été mis en place, ce qui assure le serrage de la bride sur le talon (15) de l'outil (5).1. Rigid fixing device for an elongated part such as a punch or matrix or similar tool on a press brake apron or on intermediate tool holders of the type comprising a movable clamping flange disposed opposite one of the faces of the corresponding support and able to clamp the tool fixing heel against the latter, which heel has a recess intended to be placed against the edge of the support of this tool, characterized in that:
the clamping flange (6) is pivotally mounted about a longitudinal axis (7) mounted in bearings (8a, 8b) carried by the support of the tool,
- on its rear face (10) facing the face (19) of the tool support (5), this flange has a relief (9) in the form of a shoulder, located in the region of the axis (7) pivot,
- on its front face (5a) facing the clamp (6), the heel (15) for fixing the tool (5) has a recess (13) of profile similar to the relief (9) provided on the flange clamping (6) of the corresponding fixing device, and leaving a nose (21) end, intended to be applied against a bearing surface (22) provided on the corresponding face of the flange (6), beyond the relief (9),
- at the end of its opposite face (17), the heel (15) for fixing the tool (5) has a convex cylindrical surface (14) or a chamfer inscribed in this surface,
- A movable blocking member is adapted to be placed against the upper part (11a) of the rear face (10) of the flange (6), which faces the face (19) of the tool support (5) after the heel of fixing it has been put in place, which ensures the tightening of the flange on the heel (15) of the tool (5). 2. Dispositif de fixation selon la revendication 1, caractérisé en ce que l'organe mobile de blocage s'applique contre la face correspondante (10) de la bride (7) par une surface (30) appartenant à une came (12) de serrage dont l'action est progressive en fonction de la position impartie à cette came.2. Fastening device according to claim 1, characterized in that the movable blocking member is applied against the corresponding face (10) of the flange (7) by a surface (30) belonging to a cam (12) of tightening whose action is progressive as a function of the position imparted to this cam. 3. Dispositif de fixation selon la revendication 2, caractérisé en ce que l'organe mobile de blocage consiste en une came (12) présentant la forme d'une portion de cône (30) et qui est monté rotatif autour d'un axe (25) parallèle à l'axe (34) de ce cône, mais décalé par rapport à celui-ci.3. Fastening device according to claim 2, characterized in that the movable blocking member consists of a cam (12) having the shape of a cone portion (30) and which is rotatably mounted about an axis ( 25) parallel to the axis (34) of this cone, but offset with respect to the latter. 4. Dispositif de fixation selon la revendication 2 ou 3, caractérisé en ce que, le déplacement de l'organe mobile de blocage vers sa position de blocage est assuré par un ressort (36), l'agencement étant tel que celui-ci se détend lorsque cet organe de blocage est libéré de sa position escamotée.4. Fastening device according to claim 2 or 3, characterized in that, the displacement of the movable blocking member towards its blocking position is ensured by a spring (36), the arrangement being such that it is relaxes when this blocking member is released from its retracted position. 5. Dispositif de fixation selon la revendication 4, caractérisé en ce que l'armement du ressort (36), agissant sur l'organe mobile de blocage, est conjugué avec l'escamotage de cet organe, cet armement étant assuré par un moyen approprié de commande, par exemple un levier.5. Fastening device according to claim 4, characterized in that the arming of the spring (36), acting on the movable blocking member, is combined with the retraction of this member, this arming being provided by appropriate means control, for example a lever. 6. Dispositif de fixation selon la revendication 5, caractérisé en ce que dans sa position escamotée, l'organe mobile de blocage repose contre une surface d'appui (24) prévue sur la bride de serrage (9), laquelle surface présente une courbure cylindrique convexe de rayon (R2) dont le centre coïncide avec l'axe de rotation de cette bride.6. Fastening device according to claim 5, characterized in that in its retracted position, the movable blocking member rests against a bearing surface (24) provided on the clamp (9), which surface has a curvature convex cylindrical of radius (R2) whose center coincides with the axis of rotation of this flange. 7. Dispositif de fixation selon la revendication 5 ou 6 caractérisé en ce qu'il est associé à d'autres dispositifs identiques répartis avec lui, sur toute la longueur de la presse plieuse, et en ce que les moyens d'armement des ressorts (36) prévus dans ces différents dispositifs sont reliés à une commande générale.7. Fastening device according to claim 5 or 6 characterized in that it is associated with other identical devices distributed with it, over the entire length of the press brake, and in that the means for arming the springs (36) provided in these various devices are connected to a general control. 8. Dispositif de fixation selon les revendications 4, 5, 6 et 7, caractérisé en ce que l'organe de blocage (12) comporte une position dans laquelle la bride de serrage (6) est desserrée, mais ne peut pivoter que très légèrement de façon à retenir l'outil (5) précédemment fixé au moyen de cette bride.8. Fastening device according to claims 4, 5, 6 and 7, characterized in that the locking member (12) has a position in which the clamping flange (6) is loosened, but can only pivot very slightly so as to retain the tool (5) previously fixed by means of this flange. 9. Presse-plieuse comportant deux tabliers de travail situés l'un au-dessus de l'autre et dont l'un est mobile et l'autre fixe, caractérisée en ce que l'un au moins de ces tabliers est équipé d'un dispositif de fixation selon l'une des revendications 1 à 8 , pour la fixation d'un ou plusieurs outils de forme allongée sur ce tablier.9. Press brake comprising two working aprons located one above the other and one of which is mobile and the other fixed, characterized in that at least one of these aprons is equipped with a fixing device according to one of claims 1 to 8, for fixing one or more elongated tools on this deck. 10. Outil destiné à être adapté sur une presse-­plieuse dont l'un au moins des tabliers est équipé d'un dispositif de fixation selon l'une des revendications 1 à 8, cet outil comportant un talon (15) destiné à être engagé entre la bride de serrage de ce dispositif de fixation et la face d'appui correspondante (19), prévue sur le support de cet outil, caractérisé en ce que :
- sur sa face avant (5a), destinée à être tournée vers la bride de serrage (6), le talon (15) de fixation de l'outil (5 ) comporte un creux (13) de profil semblable au relief (9) prévu sur la bride de serrage (6) du dispositif de fixation correspondant, et laissant subsister un nez (21) d'extrêmité, destiné à s'appliquer contre une portée d'appui (22) prévue sur la face correspondante de la bride (6), au-delà de l'emplacement de l'axe de pivotement (7).
- à l'extremité de sa face opposée (17), le talon (15) de fixation de l'outil (5) présente une surface convexe ou un chanfrein.10. Tool intended to be adapted on a press brake of which at least one of the aprons is equipped with a fixing device according to one of claims 1 to 8, this tool comprising a heel (15) intended to be engaged between the clamping flange of this fixing device and the corresponding bearing face (19), provided on the support of this tool, characterized in that:
- on its front face (5a), intended to be turned towards the clamping flange (6), the heel (15) for fixing the tool (5) comprises a recess (13) of profile similar to the relief (9) provided on the clamping flange (6) of the corresponding fixing device, and leaving a nose (21) end, intended to be applied against a bearing surface (22) provided on the corresponding face of the flange ( 6), beyond the location of the pivot axis (7).
- At the end of its opposite face (17), the heel (15) for fixing the tool (5) has a convex surface or a chamfer. 11. Outil selon la revendication 10, caractérisé en ce que le talon (15) de fixation de cet outil (5) présente, à l'extrêmité de sa face (17) qui est située du côté opposé à la bride (6) une surface cylindrique convexe (14) dont le centre coïncide avec l'axe (7) de pivotement de cette bride (6), lorsque le creux (13) de cet outil s'applique contre le relief (9) de ladite bride.11. Tool according to claim 10, characterized in that the heel (15) for fixing this tool (5) has, at the end of its face (17) which is situated on the side opposite the flange (6), a convex cylindrical surface (14) whose center coincides with the pivot axis (7) of this flange (6) , when the hollow (13) of this tool is applied against the relief (9) of said flange.
EP90400497A 1989-03-02 1990-02-22 Clamping device for a long piece such as a punch, a die or such a tool on a table of a press bending machine Expired - Lifetime EP0387121B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8902694 1989-03-02
FR8902694A FR2643838B1 (en) 1989-03-02 1989-03-02 RIGID FIXING DEVICE FOR HANGING PARTS SUCH AS BENDING PRESS PUNCHES

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EP0387121A1 true EP0387121A1 (en) 1990-09-12
EP0387121B1 EP0387121B1 (en) 1993-09-22

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EP90400497A Expired - Lifetime EP0387121B1 (en) 1989-03-02 1990-02-22 Clamping device for a long piece such as a punch, a die or such a tool on a table of a press bending machine

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US (1) US4993255A (en)
EP (1) EP0387121B1 (en)
JP (1) JPH0722790B2 (en)
CA (1) CA2011218C (en)
DE (1) DE69003417T2 (en)
ES (1) ES2046720T3 (en)
FR (1) FR2643838B1 (en)

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JP5048251B2 (en) * 2006-02-02 2012-10-17 徹 光吉 Upper mold holder device for press brake
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WO2010056110A1 (en) * 2008-11-11 2010-05-20 Wila B.V. Device for clamping a tool
US9403206B2 (en) * 2012-05-23 2016-08-02 U.S. Gear Tools, Inc. Spline rolling rack and method

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EP0644002A3 (en) * 1992-05-15 1995-10-18 Amada Metrecs Co Upper tool for press brake.
EP0569880A3 (en) * 1992-05-15 1994-01-12 Amada Metrecs Co
US5619885A (en) * 1992-05-15 1997-04-15 Amada Metrecs Company, Limited Upper tool holder apparatus for press brake and method of holding the upper tool
EP0569880A2 (en) * 1992-05-15 1993-11-18 Amada Metrecs Company, Limited Upper tool and upper tool holding device for press brake
EP0644002A2 (en) * 1992-05-15 1995-03-22 Amada Metrecs Company, Limited Upper tool for press brake
EP0577974A1 (en) * 1992-06-05 1994-01-12 Amada Metrecs Company, Limited Lower tool device for press brake
US5495743A (en) * 1992-06-05 1996-03-05 Amada Metrecs Company, Limited Lower tool device for press brake
EP0630699A1 (en) * 1993-05-18 1994-12-28 Amada Metrecs Company, Limited Upper tool holder apparatus for press brake and upper tool attachable thereto
US5390527A (en) * 1993-05-18 1995-02-21 Amada Metrecs Company, Limited Upper tool holder apparatus for press brake and upper tool attachable thereto
US5507170A (en) * 1993-05-18 1996-04-16 Amada Metrecs Company, Limited Upper tool for press brake
US5572902A (en) * 1993-05-18 1996-11-12 Amada Metrecs Company, Limited Upper tool holder apparatus for press brake and upper tool attachable thereto
EP0630700A1 (en) * 1993-05-18 1994-12-28 Amada Metrecs Company, Limited Upper tool for press brake
US5511407A (en) * 1994-05-06 1996-04-30 Amada Metrecs Company, Limited Upper tool for press brake
US5513514A (en) * 1994-05-06 1996-05-07 Amada Metrecs Company, Limited Upper tool and upper tool holding device for press brake
US5685191A (en) * 1994-05-06 1997-11-11 Amada Metrecs Company, Limited Upper tool for press brake
US5642642A (en) * 1994-05-06 1997-07-01 Amada Metrecs Company, Limited Upper tool and upper tool holding device for press brake
EP0715905A1 (en) * 1994-12-08 1996-06-12 Acebe Gacek S.A.R.L. Universal tooling for bending press
EP0767015A1 (en) * 1995-10-02 1997-04-09 Amada Metrecs Company, Limited Upper tool holder apparatus for press brake
US5794486A (en) * 1995-10-02 1998-08-18 Amada Metrecs Company, Limited Upper tool holder apparatus for press brake
CN1076645C (en) * 1995-10-02 2001-12-26 阿玛达美都丽股份有限公司 Uppeer tool holder apparatus for press brake
WO2012145781A1 (en) * 2011-04-29 2012-11-01 Trumpf Maschinen Austria Gmbh & Co. Kg. Tool holder for press brake
CN103143944A (en) * 2012-12-05 2013-06-12 河北汉智数控机械有限公司 Quick clamping plate
CN103143944B (en) * 2012-12-05 2016-04-06 河北汉智数控机械有限公司 A kind of clamping plate fast
WO2018049056A1 (en) * 2016-09-09 2018-03-15 Mate Precision Tooling, Inc. Press brake tool engagement system
US11383284B2 (en) 2016-09-09 2022-07-12 Mate Precision Technologies Inc. Press brake tool engagement system
US10792716B2 (en) 2017-06-29 2020-10-06 Mate Precision Tooling, Inc. Magnetic press brake and machine tooling engagement systems
CN109396222A (en) * 2017-08-17 2019-03-01 河南森源重工有限公司 Bending machine and bender cutter
US10953453B2 (en) 2017-11-06 2021-03-23 Mate Precision Technologies Inc. Magnetic press brake tooling engagement system

Also Published As

Publication number Publication date
US4993255A (en) 1991-02-19
EP0387121B1 (en) 1993-09-22
JPH0722790B2 (en) 1995-03-15
DE69003417D1 (en) 1993-10-28
CA2011218A1 (en) 1990-09-02
JPH02280927A (en) 1990-11-16
FR2643838B1 (en) 1991-05-31
DE69003417T2 (en) 1994-03-10
FR2643838A1 (en) 1990-09-07
CA2011218C (en) 2000-10-03
ES2046720T3 (en) 1994-02-01

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