EP1396293B1 - Fixing system for a bending tool - Google Patents
Fixing system for a bending tool Download PDFInfo
- Publication number
- EP1396293B1 EP1396293B1 EP03292107A EP03292107A EP1396293B1 EP 1396293 B1 EP1396293 B1 EP 1396293B1 EP 03292107 A EP03292107 A EP 03292107A EP 03292107 A EP03292107 A EP 03292107A EP 1396293 B1 EP1396293 B1 EP 1396293B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tool
- fixing
- clamping
- groove
- blade
- 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.)
- Expired - Lifetime
Links
- 238000005452 bending Methods 0.000 title claims description 4
- 239000002184 metal Substances 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 125000006850 spacer group Chemical group 0.000 description 13
- 230000014759 maintenance of location Effects 0.000 description 6
- 238000000605 extraction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000005489 elastic deformation Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- 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 a fastening system for mounting and dismounting a folding tool on the upper apron of a press brake.
- Bending presses are used for forming sheet materials and comprise for this purpose one or more tools commonly called punches fixed on the mobile deck of the machine by a fastening system or tool holder and, with regard to these tools, one or several V-shaped dies attached to the upper edge of the lower apron of the press brake.
- the sheet By arranging the sheet to be formed on the die and causing the punch to be lowered by a predetermined amount, the sheet is bent to the desired angle.
- the tool used is different. It is therefore necessary to be able to disassemble the tool of the upper deck, that is to say the fastening system to replace it with another tool more suitable.
- the fastening of the tool which comprises a fixing heel is carried out by means of a pivotally mounted flange which can occupy a first clamping position of the tool or a second position which allows the change to take place. of the tool.
- the folding tools are relatively heavy. It is therefore very desirable to maintain the tool on the clamping flange even when it is in the loosened position in order to avoid any risk of falling of the tool on the matrix of the lower deck disposed opposite this tool.
- FIGS. 1A and 1B appended there is shown the embodiment of the fastening system of the tool described in the patent application mentioned above.
- the movable upper deck 10 and the tool spacer 12 fixed by any suitable means on the upper deck 10.
- the tool spacer comprises a lower part 14 of reduced thickness and defined by two shoulders 16 and 18.
- the fastening system also comprises a clamping flange 20 which is pivotally mounted about a horizontal axis parallel to the length of the deck.
- the pivot axis can be defined by screws 22 with swiveling head cooperating with corresponding holes 24 machined in the middle portion 26 of the flange 20.
- pushers 28 whose one end acts on the upper end 30 of the flange 20 and whose second end cooperates with a rotary cam 32 mounted in the tool spacer 12 in the longitudinal direction of the apron .
- the cam 32 in the position shown on the Figure 1A , causes the separation of the upper part 30 of the flange, which corresponds to the clamping position.
- the cam 32 in its position represented on the Figure 1B , the cam 32 no longer acts on the pushers 30 and, under the effect of an elastic system, the flange 20 assumes the mounting position-disassembly of the tool shown on the Figure 1B .
- the tool 34 comprises at its upper part a fixing heel 36 which has a first fixing face 36a, a second fixing face 36b parallel to the first fixing face and a retaining groove 38.
- the flange comprises a spoiler retaining means 44 which can penetrate into the groove 38 of the heel of the tool 34.
- the spoiler 44 plays no role.
- the lower end 42 of the flange is spaced apart to occupy the position of assembly-disassembly, the spoiler 44 remains partially engaged in the groove 38, which ensures the maintenance in the vertical direction of the tool 34 relative to the tool spacer 12.
- the tool can be placed between the lower part of the tool spacer and the flange only laterally, that is to say by the ends of the flange, when the operator wants to replace a tool that is mounted for example in the central portion of the flange, it is necessary that it proceeds prior to disassembly of the tools disposed between the tool actually to change and one end of the flange.
- An object of the present invention is to provide a tool attachment system on the upper apron of a press brake which allows the mounting and the front dismounting of the tools on the upper deck, which effectively allows to change only the desired tool.
- Another object of the invention is to provide a fastening system of the tool wherein the tool retaining means are simple and inexpensive to manufacture and easy to mount on the press.
- the fastening system of a folding tool comprises a clamping body having a first clamping surface adapted to cooperating with one of the attachment surfaces of the tool and a clamping flange of the pivotally mounted tool comprising a second clamping surface, said clamp being able to assume a first clamping position of the tool in which the fastening surfaces of the tool tool are clamped between the first and second clamping surfaces and a second mounting / disassembling position of the tool in which its clamping surface is spaced apart from the first clamping surface of the clamping body.
- This fastening system is characterized in that it further comprises a retaining piece of the tool comprising a plurality of elastically deformable blades parallel to each other and arranged in the same plane, each blade comprising a first end secured to the clamping body. , a running part arranged in such a way that it is applied against the first attachment face of the tool and a second end comprising at least a first part angular towards the tool relative to the current part and a second part angulated in opposite direction so that said angulated portions, when said blade is at rest, are held elastically in the groove of the tool and that, when the flange is in the loading / unloading position, the current portion of the blade can deform elastically to allow introduction or extraction of said angular portions of the elastically deformable blades in or out of said groove.
- the cost of manufacturing and mounting the retaining piece is reduced since it is preferably a simple sheet which is cut and folded to obtain the different elastic blades with their two angled parts. able to penetrate into the groove of the tool.
- the current part of the elastic blade bears on the attachment surface of the tool and the first angulated portion is in contact with the chamfer which connects the attachment surface of the tool. the tool and the upper wall of the groove.
- each elastically deformable blade further comprises, beyond said second angulated portion, a connecting portion and an alignment portion disposed at the end of the connecting portion, said alignment portion extending substantially parallel to the current portion of the blade facing at least said second angled portion, said alignment portion being adapted to penetrate into an alignment groove formed in the lower face of the flange and parallel to the axis of pivoting thereof.
- said alignment groove comprises an alignment wall which cooperates with the alignment portion of the elastically deformable blades when the flange is in its loading / unloading position.
- the alignment portions of the elastically deformable blades can be effectively all aligned and so are the angular portions of the flanges. elastically deformable blades, which greatly facilitates the introduction or extraction of the folding tool.
- FIG. 2 we will describe the entire attachment system of the tool.
- the tool spacer 12 with its lower portion 14 of reduced width defined by the shoulders 16 and 18, the lower portion 14 defining one of the clamping faces 14a.
- the flange 20, 20 'clamping with its upper portion 30 and lower end 42.
- FIG. 2 schematically shows the pivot axis 22, 22 'of the clamps 20, 20' and actuators 28, 32 for controlling the pivoting of each flange about the axes 22, 22 '.
- the embodiment of the axes 22, 22 'and flange pivot control means can be arbitrary, for example of the type shown in the drawings.
- Figures 1A and 1B can be arbitrary, for example of the type shown in the drawings.
- the folding tool 34 has also been shown with its fixing heel 36 and its retaining groove 38.
- the fixing heel 36 has two fixing faces 36a and 36b capable of cooperating with the clamping face 14a of the spacer tool and the clamping face of the flange as will be explained.
- the lower part of the flange 42 in its face facing the tool spacer comprises two longitudinal rod-shaped inserts 50 and 52 which define a clamping surface fulfilling the same function as the surface of clamping 40 of the flange 20 shown in FIG. Figure 1A .
- the flange 20 can pivot between a first fastening position in which the heel 36 of the tool is clamped between the extension 14 of the tool spacer and the clamping surface formed by the rods 50 and 52 and a second position of the flange 20 of assembly / disassembly in which the clamping surfaces 50, 52 are spaced apart from the heel 36 of the folding tool.
- the retention of the folding tool is obtained by a retainer with the general reference 54 and shown in more detail on the figure 5 .
- This retention member 54 is preferably constituted by an elastically deformable metal plate 56 in which are defined elastically deformable blades 58. Each elastically deformable blade 58 is separated from the adjacent blades by a slot 60.
- each elastically deformable blade is determined in relation to the lengths of the folding tools themselves, according to the length of the folding machine, so that each blade 58 is applied only on the heel of a single folding tool.
- each blade 58 has a first attachment end 58a secured by any suitable means 62 to the tool spacer 12, a running portion 58b and a retaining end 58c.
- first attachment end 58a secured by any suitable means 62 to the tool spacer 12
- running portion 58b secured by any suitable means 62 to the tool spacer 12
- retaining end 58c is disposed in such a way that it can penetrate into the groove 38 of the heel of the tool when it is in the attachment position on the tool spacer 12.
- the retaining portion 58c of each blade 58 has a first angular portion 64 which is for example an angle of the order of 45 ° relative to the direction of the running portion 58b of the blade. The angulation is such that this portion can enter the groove 38 of the heel of the folding tool.
- the retaining portion also comprises a second angled portion 66 in the opposite direction, so that the set of angled portions 64 and 66 form an open V of vertex A.
- the fold 68 which connects the flat current portion 58b to the first angled portion 64 is defined such that, at rest, the chamfer 70 which connects the attachment face 36a of the heel of the tool to the upper wall 72 of the groove 38, is supported on the first end of the angled portion 64.
- the angled portions 64, 66 are defined such that the angled portions can enter fully into the groove 38.
- each blade 58 further comprises an alignment portion 76 substantially parallel to the running portion 58b of the blade and connected to the end of the second angled portion 66 by a substantially horizontal connecting portion 78.
- the lower end 42 of the flanges 20, 20 ' is provided with a longitudinal groove 80 formed in the lower face 20a of the flange and extending along the length of the flange.
- the alignment groove 80 is adapted to receive the end 76a of the alignment portion 76.
- the width l 'of the alignment groove 80 is such that, when the flange is in the clamping position, the portion of the alignment portion 80 alignment 76 is not in contact with any of the vertical walls 80a, 80b of the alignment groove and that, when the flange is in the assembly / disassembly position shown in FIG. figure 4 the end of the alignment portion 76 is applied against the vertical wall 80a of the groove 80, the wall closest to the heel of the tool.
- the stiffness of the blade 58 is sufficient so that its running portion 58b is held against the attachment face 36a of the heel of the tool and that the angled portions 64 and 66 remain engaged in the groove 38 of the heel of the tool. In other words, the stiffness of the blade 58 is sufficient to compensate for the weight of the tool.
- this position of the flange 20 is obtained effective retention of the tool.
- the upper chamfer 70 of the groove 38 of the tool acts on the beginning of the upper angulated portion 64 causing by elastic deformation the gap of the elastic blade and the progressive exit of the angulated portions out of the groove 38. This result is obtained of course thanks to the angulation of the portion 64.
- the chamfer 70 comes into contact with the apex A of the two angular portions, the effect no longer exists and the tool can be removed.
- the end 76a of this portion enters the longitudinal groove 80 formed in the underside of the flange. As has already been briefly explained, this end 76a does not come into contact with any of the vertical faces 80a and 80b of the groove when the flange is in its clamping position shown in FIG. figure 3 . On the other hand, when the flange is brought into its assembly / disassembly position shown on the figure 4 the end 76a of the alignment portion 76 engages the wall 80a of the groove 80. Thus, all the alignment ends 76 of the blades 58 are aligned with the position of the wall 80a. As a result, the vertices A angular portions 64, 66 of each blade are also aligned, which facilitates the introduction or extraction of the tool since all these A vertices are aligned.
- FIG. 5 which represents a preferred embodiment of the retaining member 54, there is shown in the zone Z the portions of the elastically deformable blades 58 which deform elastically when insertion or extraction of the angled portions 64 and 66 of these blades in the groove 38 of the heel of the folding tool 34.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
- Clamps And Clips (AREA)
- Workshop Equipment, Work Benches, Supports, Or Storage Means (AREA)
Description
La présente invention concerne un système de fixation pour le montage et le démontage d'un outil de pliage sur le tablier supérieur d'une presse plieuse.The present invention relates to a fastening system for mounting and dismounting a folding tool on the upper apron of a press brake.
Les presses plieuses sont utilisées pour le formage de matériaux en feuille et comprennent pour cela un ou plusieurs outils communément appelés poinçons fixés sur le tablier mobile de la machine par un système de fixation ou porte-outil et, en regard de ces outils, une ou plusieurs matrices en forme de V fixées sur le bord supérieur du tablier inférieur de la presse plieuse.Bending presses are used for forming sheet materials and comprise for this purpose one or more tools commonly called punches fixed on the mobile deck of the machine by a fastening system or tool holder and, with regard to these tools, one or several V-shaped dies attached to the upper edge of the lower apron of the press brake.
En disposant la tôle à former sur la matrice et en provoquant l'abaissement du poinçon d'une quantité prédéterminée, on obtient le pliage de la tôle de l'angle souhaité.By arranging the sheet to be formed on the die and causing the punch to be lowered by a predetermined amount, the sheet is bent to the desired angle.
En outre, suivant le type de formage et la dimension de ce formage à réaliser sur les matériaux en feuille, l'outil utilisé est différent. Il est donc nécessaire de pouvoir démonter l'outil du tablier supérieur, c'est-à-dire du système de fixation pour le remplacer par un autre outil plus adapté.In addition, depending on the type of forming and the size of this forming to be made on the sheet materials, the tool used is different. It is therefore necessary to be able to disassemble the tool of the upper deck, that is to say the fastening system to replace it with another tool more suitable.
Comme cela est bien connu, la fixation de l'outil qui comporte un talon de fixation est réalisée à l'aide d'une bride montée pivotante qui peut occuper une première position de serrage de l'outil ou une deuxième position écartée permettant le changement de l'outil.As is well known, the fastening of the tool which comprises a fixing heel is carried out by means of a pivotally mounted flange which can occupy a first clamping position of the tool or a second position which allows the change to take place. of the tool.
On comprend également que les outils de pliage sont relativement lourds. Il est donc très souhaitable de maintenir l'outil sur la bride de serrage même lorsque celle-ci est en position desserrée afin d'éviter tout risque de chute de l'outil sur la matrice du tablier inférieur disposée en regard de cet outil.It is also understood that the folding tools are relatively heavy. It is therefore very desirable to maintain the tool on the clamping flange even when it is in the loosened position in order to avoid any risk of falling of the tool on the matrix of the lower deck disposed opposite this tool.
Dans la demande de
Sur les
Le système de fixation comporte également une bride de serrage 20 qui est montée pivotante autour d'un axe horizontal parallèle à la longueur du tablier. L'axe de pivotement peut être défini par des vis 22 à tête rotulante coopérant avec des perçages correspondants 24 usinés dans la partie médiane 26 de la bride 20. Pour commander le pivotement de la bride 20 autour de l'axe défini par les têtes des vis rotulantes 22, on peut utiliser des poussoirs 28 dont une extrémité agit sur l'extrémité supérieure 30 de la bride 20 et dont la deuxième extrémité coopère avec une came rotative 32 montée dans l'entretoise d'outil 12 selon la direction longitudinale du tablier. Dans ce mode de réalisation, la came 32, dans la position représentée sur la
L'outil 34 comporte à sa partie supérieure un talon de fixation 36 qui présente une première face de fixation 36a, une deuxième face de fixation 36b parallèle à la première face de fixation et une rainure de retenue 38.The
Dans la position de serrage représentée sur la
En outre, à son extrémité inférieure 42, la bride comporte un moyen de retenue 44 en forme de béquet qui peut pénétrer dans la rainure 38 du talon de l'outil 34. Lorsque la bride 20 est dans la position de serrage représentée sur la
Ce système permet une retenue efficace de l'outil empêchant sa chute, mais néanmoins, il présente l'inconvénient suivant. Lorsque la bride 20 est amenée dans sa position de montage-démontage, l'enlèvement de l'outil 34 ne peut être réalisé que par les extrémités longitudinales de la bride 20 par coulissement du talon de l'outil entre la bride et la partie inférieure 14 de l'entretoise d'outil.This system allows effective retention of the tool preventing its fall, but nevertheless, it has the following disadvantage. When the
On comprend que, du fait que l'outil ne peut être mis en place entre la partie inférieure de l'entretoise d'outil et la bride que latéralement, c'est-à-dire par les extrémités de la bride, lorsque l'opérateur veut remplacer un outil qui est monté par exemple dans la partie centrale de la bride, il est nécessaire que celui-ci procède préalablement au démontage des outils disposés entre l'outil effectivement à changer et une des extrémités de la bride.It will be understood that because the tool can be placed between the lower part of the tool spacer and the flange only laterally, that is to say by the ends of the flange, when the operator wants to replace a tool that is mounted for example in the central portion of the flange, it is necessary that it proceeds prior to disassembly of the tools disposed between the tool actually to change and one end of the flange.
Ces opérations relativement délicates d'enlèvement d'une pluralité d'outils augmentent sensiblement le temps de changement de l'outil souhaité et entraînent donc une diminution de la productivité de la presse plieuse. Plus la fréquence de changement des outils est importante, plus les pertes de temps sont importantes.These relatively tricky operations of removing a plurality of tools substantially increase the time of change of the desired tool and thus result in a decrease in the productivity of the press brake. The higher the frequency of change of tools, the greater the loss of time.
Un objet de la présente invention est de fournir un système de fixation d'outil sur le tablier supérieur d'une presse plieuse qui permette le montage et le démontage frontal des outils sur le tablier supérieur, ce qui permet effectivement de ne changer que l'outil souhaité.An object of the present invention is to provide a tool attachment system on the upper apron of a press brake which allows the mounting and the front dismounting of the tools on the upper deck, which effectively allows to change only the desired tool.
Un autre objet de l'invention est de fournir un système de fixation de l'outil dans lequel les moyens de retenue de l'outil sont d'une fabrication simple et peu onéreuse et d'un mode de montage aisé sur la presse.Another object of the invention is to provide a fastening system of the tool wherein the tool retaining means are simple and inexpensive to manufacture and easy to mount on the press.
Pour atteindre ce but, selon l'invention, le système de fixation d'un outil de pliage, ledit outil comprenant deux surfaces parallèles de fixation par serrage et une rainure de retenue, comprend un corps de serrage présentant une première surface de serrage apte à coopérer avec une des surfaces de fixation de l'outil et une bride de serrage de l'outil montée pivotante comprenant une deuxième surface de serrage, ladite bride pouvant prendre une première position de serrage de l'outil dans laquelle les surfaces de fixation de l'outil sont serrées entre les première et deuxième surfaces de serrage et une deuxième position de montage/démontage de l'outil dans laquelle sa surface de serrage est écartée de la première surface de serrage du corps de serrage.To achieve this object, according to the invention, the fastening system of a folding tool, said tool comprising two parallel clamping attachment surfaces and a retaining groove, comprises a clamping body having a first clamping surface adapted to cooperating with one of the attachment surfaces of the tool and a clamping flange of the pivotally mounted tool comprising a second clamping surface, said clamp being able to assume a first clamping position of the tool in which the fastening surfaces of the tool tool are clamped between the first and second clamping surfaces and a second mounting / disassembling position of the tool in which its clamping surface is spaced apart from the first clamping surface of the clamping body.
Ce système de fixation se caractérise en ce qu'il comprend en outre une pièce de retenue de l'outil comprenant une pluralité de lames élastiquement déformables parallèles entre elles et disposées dans un même plan, chaque lame comprenant une première extrémité solidaire du corps de serrage, une partie courante disposée de telle manière qu'elle soit appliquée contre la première face de fixation de l'outil et une deuxième extrémité comportant au moins une première partie angulée vers l'outil par rapport à la partie courante et une deuxième partie angulée en direction opposée de telle manière que lesdites parties angulées, lorsque ladite lame est au repos, soient maintenues élastiquement dans la rainure de l'outil et que, lorsque la bride est en position de chargement/déchargement, la partie courante de la lame puisse se déformer élastiquement pour permettre l'introduction ou l'extraction desdites parties angulées des lames élastiquement déformables dans ou hors de ladite rainure.This fastening system is characterized in that it further comprises a retaining piece of the tool comprising a plurality of elastically deformable blades parallel to each other and arranged in the same plane, each blade comprising a first end secured to the clamping body. , a running part arranged in such a way that it is applied against the first attachment face of the tool and a second end comprising at least a first part angular towards the tool relative to the current part and a second part angulated in opposite direction so that said angulated portions, when said blade is at rest, are held elastically in the groove of the tool and that, when the flange is in the loading / unloading position, the current portion of the blade can deform elastically to allow introduction or extraction of said angular portions of the elastically deformable blades in or out of said groove.
On comprend que, grâce à la présence des lames élastiques de retenue qui se terminent par les deux portions angulées, il est possible de procéder à la mise en place et au retrait d'un outil de pliage à partir de la face frontale de la machine de pliage. En effet, après avoir amené la bride dans sa position de montage/démontage, on peut mettre en place ou retirer l'outil par déformation élastique de la partie courante des lames sous l'effet de la coopération dans un sens ou dans l'autre de l'une ou l'autre des portions angulées de l'extrémité de la lame élastique avec le talon de fixation de l'outil. De plus, ce système de retenue élastique assure une retenue de l'outil après desserrage de la bride aussi efficace que dans les systèmes antérieurs.It is understood that, thanks to the presence of resilient retaining blades which terminate in the two angled portions, it is possible to proceed with the introduction and removal of a bending tool from the front face of the machine. folding. Indeed, after bringing the flange into its position of assembly / disassembly, we can implement or remove the tool by elastic deformation of the running part of the blades under the effect of cooperation in one direction or the other one or other of the angled portions of the end of the resilient blade with the attachment of the attachment of the tool. In addition, this elastic retaining system ensures a retention of the tool after loosening the flange as effective as in previous systems.
En outre, il apparaît clairement que le coût de fabrication et de montage de la pièce de retenue est réduit puisqu'il s'agit de préférence d'une simple tôle qui est découpée et pliée pour obtenir les différentes lames élastiques avec leurs deux parties angulées aptes à pénétrer dans la rainure de retenue de l'outil.In addition, it is clear that the cost of manufacturing and mounting the retaining piece is reduced since it is preferably a simple sheet which is cut and folded to obtain the different elastic blades with their two angled parts. able to penetrate into the groove of the tool.
Enfin, on comprend que la présence dans deux parties angulées permet une introduction et une extraction aisées des moyens de retenue dans et hors de la rainure de retenue, ce qui évite les risques d'introductions de contraintes ou de déformations des lames élastiques qui seraient défavorables à la pérennité du système de retenue.Finally, it is understood that the presence in two angled parts allows easy introduction and extraction of the retaining means in and out of the retaining groove, which avoids the risk of introduction of stresses or deformations of the elastic blades that would be unfavorable the durability of the restraint system.
De préférence, lorsqu'un outil est en position de fixation, la partie courante de la lame élastique est en appui sur la surface de fixation de l'outil et la première portion angulée est en contact avec le chanfrein qui raccorde la surface de fixation de l'outil et la paroi supérieure de la rainure.Preferably, when a tool is in the fixing position, the current part of the elastic blade bears on the attachment surface of the tool and the first angulated portion is in contact with the chamfer which connects the attachment surface of the tool. the tool and the upper wall of the groove.
De préférence encore, chaque lame élastiquement déformable comprend en outre, au-delà de ladite deuxième portion angulée, une portion de liaison et une portion d'alignement disposées à l'extrémité de la portion de liaison, ladite portion d'alignement s'étendant sensiblement parallèlement à la partie courante de la lame en regard d'au moins ladite deuxième portion angulée, ladite partie d'alignement étant apte à pénétrer dans une rainure d'alignement ménagée dans la face inférieure de la bride et parallèle à l'axe de pivotement de celle-ci.More preferably, each elastically deformable blade further comprises, beyond said second angulated portion, a connecting portion and an alignment portion disposed at the end of the connecting portion, said alignment portion extending substantially parallel to the current portion of the blade facing at least said second angled portion, said alignment portion being adapted to penetrate into an alignment groove formed in the lower face of the flange and parallel to the axis of pivoting thereof.
Selon à nouveau un mode préféré de réalisation, ladite rainure d'alignement comporte une paroi d'alignement qui coopère avec la portion d'alignement des lames élastiquement déformables lorsque la bride est dans sa position de chargement/ déchargement.According to a preferred embodiment, said alignment groove comprises an alignment wall which cooperates with the alignment portion of the elastically deformable blades when the flange is in its loading / unloading position.
On comprend que, grâce à la présence de la paroi d'alignement ménagée dans la rainure d'alignement de la bride, les portions d'alignement des lames élastiquement déformables peuvent être effectivement toutes alignées et il en va donc de même des portions angulées des lames élastiquement déformables, ce qui facilite grandement la mise en place ou l'extraction de l'outil de pliage.It is understood that, thanks to the presence of the alignment wall formed in the flange alignment groove, the alignment portions of the elastically deformable blades can be effectively all aligned and so are the angular portions of the flanges. elastically deformable blades, which greatly facilitates the introduction or extraction of the folding tool.
D'autres caractéristiques et avantages de l'invention apparaîtront mieux à la lecture de la description qui suit d'un mode de réalisation de l'invention donné à titre d'exemple non limitatif. La description se réfère aux figures annexées, sur lesquelles :
- les
figures 1A et 1B déjà décrites montrent un système de fixation d'outil de pliage de type connu en position active et en position de repos ; - la
figure 2 est une vue en élévation de l'ensemble d'un système de fixation d'outil selon l'invention ; - la
figure 3 est une vue de détail montrant l'extrémité inférieure des lames de retenue lorsque la bride est en position de serrage ; - la
figure 4 est une vue de détail montrant l'extrémité inférieure de la lame de retenue lorsque la bride est dans la position de montage/démontage ; et - la
figure 5 est une vue en élévation d'un mode préféré de réalisation de l'organe de retenue.
- the
Figures 1A and 1B already described show a known type of folding tool attachment system in the active position and in the rest position; - the
figure 2 is an elevational view of the assembly of a tool attachment system according to the invention; - the
figure 3 is a detail view showing the lower end of the retaining blades when the flange is in the clamping position; - the
figure 4 is a detail view showing the lower end of the retaining blade when the flange is in the mounting / disassembling position; and - the
figure 5 is an elevational view of a preferred embodiment of the retainer.
En se référant tout d'abord à la
Il est important d'observer dès à présent que la bride 20 à son extrémité inférieure 42, ne comporte pas le béquet de retenue 44 de la
Sur la
Dans le mode de réalisation décrit, la partie inférieure de la bride 42 dans sa face tournée vers l'entretoise d'outil comporte deux inserts en forme de baguettes longitudinales 50 et 52 qui définissent une surface de serrage remplissant la même fonction que la surface de serrage 40 de la bride 20 représentée sur la
On comprend que la bride 20 peut pivoter entre une première position de fixation dans laquelle le talon 36 de l'outil est serré entre l'extension 14 de l'entretoise d'outil et la surface de serrage constituée par les baguettes 50 et 52 et une deuxième position de la bride 20 de montage/démontage dans laquelle les surfaces de serrage 50, 52 sont écartées du talon 36 de l'outil de pliage.It is understood that the
Selon l'invention, la retenue de l'outil de pliage est obtenue par un organe de retenue portant la référence générale 54 et représenté plus en détail sur la
La largeur I de chaque lame élastiquement déformable est déterminée en relation avec les longueurs des outils de pliage eux-mêmes, selon la longueur de la machine de pliage, de telle manière que chaque lame 58 ne soit appliquée que sur le talon d'un seul outil de pliage.The width I of each elastically deformable blade is determined in relation to the lengths of the folding tools themselves, according to the length of the folding machine, so that each
Comme le montre mieux la
Comme le montrent mieux les
L'extrémité inférieure 58c de chaque lame 58 comporte de plus une portion d'alignement 76 sensiblement parallèle à la partie courante 58b de la lame et raccordée à l'extrémité de la deuxième portion angulée 66 par une portion de raccordement 78 sensiblement horizontale. Comme le montrent les
On comprend que, lorsque la bride 20 est dans sa position de serrage telle que représentée sur la
Lorsque la bride 20 est amenée dans sa position de montage/démontage telle que représentée sur la
Lorsqu'une force F vers le bas est appliquée à l'outil pour en obtenir le démontage, le chanfrein 70 supérieur de la rainure 38 de l'outil agit sur le début de la portion angulée supérieure 64 provoquant par déformation élastique l'écartement de la lame élastique et la sortie progressive des portions angulées hors de la rainure 38. Ce résultat est obtenu bien sûr grâce à l'angulation de la portion 64. Lorsque le chanfrein 70 arrive au contact du sommet A des deux portions angulées, l'effet de retenue n'existe plus et l'outil peut être enlevé.When a downward force F is applied to the tool to obtain disassembly, the
On comprend que, lorsque l'on veut procéder à la mise en place de l'outil, le coin supérieur externe 82 du talon 36 de l'outil vient au contact de la partie inférieure de la portion angulée 66 de la lame 58. Ce coin supérieur, de préférence chanfreiné, 82 provoque l'écartement progressif de l'ensemble de la lame 58 jusqu'à ce que le sommet A des portions angulées 64 et 66 vienne au contact de la face de fixation 36a du talon de l'outil. Lorsque l'outil a été soulevé suffisamment pour que le sommet A des portions angulées arrive en regard de la partie supérieure de la rainure 38 au fur et à mesure du soulèvement de l'outil, les portions angulées 64 et 66 pénètrent dans la rainure 38 jusqu'à ce que l'outil 34 arrive dans sa position de fixation représentée sur la
On va expliquer maintenant la fonction de la portion d'alignement 76 de l'extrémité de retenue 58c des lames élastiquement déformables 58. L'extrémité 76a de cette portion pénètre dans la rainure longitudinale 80 ménagée dans la face inférieure de la bride. Ainsi qu'on l'a déjà expliqué succinctement, cette extrémité 76a n'est en contact avec aucune des faces verticales 80a et 80b de la rainure lorsque la bride est dans sa position de serrage représentée sur la
Cet alignement des sommets au moment de la mise en place de l'outil évite l'introduction de contraintes importantes dans des lames déformables dont les sommets ne seraient pas convenablement écartés de la face de serrage 14a.This alignment of the vertices at the time of installation of the tool avoids the introduction of significant stresses in deformable blades whose vertices would not be properly spaced from the clamping
Sur la
Claims (5)
- A system for fixing a bending tool (34), said tool comprising two parallel surfaces for fixing by clamping and a retaining groove (38), said system comprising a clamping body (14) having a first clamping surface capable of cooperating with one of the fixing surfaces of the tool and a pivotably mounted tool clamp (20) and comprising a second clamping surface, said clamp being able to assume a first tool clamping position in which the fixing surfaces of the tool are clamped between the first and second clamping surfaces and a second position for mounting/dismounting the tool, in which position its clamping surface is separated from the first clamping surface of the body, said system being characterized in that it further comprises a member (54) for retaining the tool comprising a plurality of mutually parallel elastically deformable blades (58) positioned in the same plane, each blade comprising a first end (58a) firmly secured to the clamping body, a running part (58b) positioned in such a way that, at rest, it is applied against the first fixing face of the tool and a second end (58c) including at least a first part (64) angled toward the tool with respect to the running part and a second part (66) angled in the opposite direction so that said angled parts, when said blade is at rest, are held elastically in the groove (38) of the tool (34) and so that when the clamp is in the loading/unloading position, the running part of the blade may deform elastically to allow said angled parts (64, 66) of the elastically deformable blades (58) to be introduced into or extracted from said groove (38).
- The fixing system according to claim 1, characterized in that, when a tool (34) is in the fixing position, the running part (58b) of the elastic blade (58) bears against the fixing surface of the tool (34) and in that the first angled portion (64) is in contact with the chamfer (70) which connects the fixing surface (36a) of the tool and the upper face (72) of the groove.
- The fixing system according to any one of claims 1 and 2, characterized in that each elastically deformable blade (58) further comprises beyond said second angled portion (66), a connecting portion (78) and an alignment portion (76) positioned at the end of the connecting part, said alignment portion (76) extending substantially parallel to the running part of the blade (58) facing at least said second angled portion (66), said alignment part being capable of penetrating into an alignment groove (80) formed in the lower face (20a) of the clamp (20) and parallel to the axis of pivoting thereof.
- The fixing system according to claim 3, characterized in that said alignment groove (80) comprises an alignment wall (80a) which cooperates with the alignment portion (76) of the elastically deformable blades (58) when the clamp (20) is in its loading/unloading position.
- The fixing system according to any one of claims 1 to 4, characterized in that said retaining part (54) is formed by an elastically deformable metal sheet (56) in which said blades (58) are separated from each other by parallel slots (60).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0211120A FR2844213B1 (en) | 2002-09-09 | 2002-09-09 | COMB SYSTEM FOR INTERMEDIATES |
FR0211120 | 2002-09-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1396293A1 EP1396293A1 (en) | 2004-03-10 |
EP1396293B1 true EP1396293B1 (en) | 2008-10-08 |
Family
ID=31503137
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03292107A Expired - Lifetime EP1396293B1 (en) | 2002-09-09 | 2003-08-27 | Fixing system for a bending tool |
Country Status (9)
Country | Link |
---|---|
US (1) | US7343774B2 (en) |
EP (1) | EP1396293B1 (en) |
JP (1) | JP4566532B2 (en) |
CN (1) | CN1304134C (en) |
CA (1) | CA2439664C (en) |
DE (1) | DE60323913D1 (en) |
FR (1) | FR2844213B1 (en) |
RU (1) | RU2325242C2 (en) |
TW (1) | TWI274659B (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2851488B1 (en) * | 2003-02-21 | 2005-05-20 | Amada Europ Sa | FIXING SYSTEM FOR MOUNTING AND DISASSEMBLING A FOLDING TOOL |
DE102004022643A1 (en) * | 2004-05-07 | 2005-12-15 | Hans Schröder Maschinenbau GmbH | Folding Machine |
US7596983B2 (en) * | 2005-07-11 | 2009-10-06 | Wilson Tool International Inc. | Press brake clamp incorporating tool-seating mechanism |
ES2356911T3 (en) * | 2006-06-01 | 2011-04-14 | Wila B.V. | TOOL WITH AN AUTOMATIC SECURITY DEVICE. |
CN105992658B (en) * | 2014-02-10 | 2018-10-30 | 萨尔瓦尼尼意大利股份公司 | Metal sheet bender |
US9555456B2 (en) | 2014-04-26 | 2017-01-31 | Wilson Tool International Inc. | Dynamic clamp and tool holders therefor |
US10189067B2 (en) | 2015-05-27 | 2019-01-29 | Wilson Tool International Inc. | Tool holders usable with tooling having different tang styles and/or configured with mechanically-actuated clamp assembly |
US10300518B2 (en) | 2015-05-27 | 2019-05-28 | Wilson Tool International Inc. | Tool holders usable with tooling having different tang styles and/or configured with mechanically-actuated clamp assembly |
CN105215168A (en) * | 2015-10-12 | 2016-01-06 | 蒙城县智扬门业有限公司 | A kind of tulwar formula panel-bending mould |
JP6251771B2 (en) | 2016-04-19 | 2017-12-20 | 株式会社アマダホールディングス | Mold holder device |
US9962749B2 (en) * | 2016-09-23 | 2018-05-08 | Mate Precision Tooling, Inc. | Press brake tool safety latch mechanism |
AT520943B1 (en) | 2018-02-21 | 2019-09-15 | Trumpf Maschinen Austria Gmbh & Co Kg | Production plant with tool change unit and clamping jaw and method for tool change |
US11033944B2 (en) * | 2018-09-30 | 2021-06-15 | Wilson Tool International Inc. | Tool holders usable with tooling having different tang styles, and seating/securing components of such holders |
IT201900006656A1 (en) | 2019-05-08 | 2020-11-08 | Salvagnini Italia Spa | Bending machine for metal sheets |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4437654A (en) * | 1982-03-11 | 1984-03-20 | Pietro Chiappetti | Vise with interchangeable jaw members |
US4572564A (en) * | 1984-07-12 | 1986-02-25 | General Electric Company | Adaptive gripping device |
US4752063A (en) * | 1987-03-16 | 1988-06-21 | West Ventures Enterprises, Inc. | Flexible element vise attachment |
NL8802402A (en) * | 1988-09-29 | 1990-04-17 | Wila Maschf Bv | CLAMP DEVICE, EG. FOR THE UPPER TOOL OF A PRESS BRAKE. |
JPH0813379B2 (en) * | 1992-05-15 | 1996-02-14 | 株式会社アマダメトレックス | Mold holder for press brake |
CN2303695Y (en) * | 1994-06-30 | 1999-01-13 | 阿玛达美都丽股份有限公司 | Upper tool for bending press |
DE19546969A1 (en) * | 1995-12-15 | 1997-06-19 | Amada Gmbh | Quick clamping device for at least one tool of a processing machine |
US6003360A (en) * | 1997-07-01 | 1999-12-21 | Wilson Tool International, Inc. | Press brake tool holder |
US6170813B1 (en) * | 1999-07-21 | 2001-01-09 | Jerald A. Bowers | Vise with adjustable jaw inserts |
IT1311880B1 (en) * | 1999-11-30 | 2002-03-19 | Luciano Gasparini | SUPPORT AND LOCKING DEVICE WITH SAFETY FUNCTION AT LEAST ONE INTERCHANGEABLE TOOL, PARTICULARLY IN A MACHINE |
US6138492A (en) * | 2000-02-25 | 2000-10-31 | Wilson Tool International, Inc. | Tool holder for press brakes |
FR2809976B1 (en) * | 2000-06-09 | 2004-04-30 | Amada Europ Sa | TOOL HOLDER FOR MOUNTING A TOOL ON A BENDING PRESS |
US6953188B2 (en) * | 2003-08-08 | 2005-10-11 | Rain Mountain Llc | Flexible jaw universal vise |
-
2002
- 2002-09-09 FR FR0211120A patent/FR2844213B1/en not_active Expired - Fee Related
-
2003
- 2003-08-27 EP EP03292107A patent/EP1396293B1/en not_active Expired - Lifetime
- 2003-08-27 DE DE60323913T patent/DE60323913D1/en not_active Expired - Lifetime
- 2003-09-08 CN CNB031567223A patent/CN1304134C/en not_active Expired - Fee Related
- 2003-09-08 RU RU2003127823/02A patent/RU2325242C2/en not_active IP Right Cessation
- 2003-09-08 CA CA2439664A patent/CA2439664C/en not_active Expired - Fee Related
- 2003-09-09 JP JP2003316152A patent/JP4566532B2/en not_active Expired - Fee Related
- 2003-09-09 US US10/658,066 patent/US7343774B2/en not_active Expired - Fee Related
- 2003-09-09 TW TW092124902A patent/TWI274659B/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CA2439664A1 (en) | 2004-03-09 |
US7343774B2 (en) | 2008-03-18 |
RU2325242C2 (en) | 2008-05-27 |
JP4566532B2 (en) | 2010-10-20 |
EP1396293A1 (en) | 2004-03-10 |
US20040103710A1 (en) | 2004-06-03 |
CN1490098A (en) | 2004-04-21 |
RU2003127823A (en) | 2005-04-10 |
JP2004261866A (en) | 2004-09-24 |
CN1304134C (en) | 2007-03-14 |
FR2844213A1 (en) | 2004-03-12 |
DE60323913D1 (en) | 2008-11-20 |
TWI274659B (en) | 2007-03-01 |
CA2439664C (en) | 2011-04-05 |
TW200412288A (en) | 2004-07-16 |
FR2844213B1 (en) | 2004-11-26 |
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