EP0912265B1 - Dispositif permettant d'adapter la taille d'un serre-flan de machine-outil - Google Patents
Dispositif permettant d'adapter la taille d'un serre-flan de machine-outil Download PDFInfo
- Publication number
- EP0912265B1 EP0912265B1 EP97932851A EP97932851A EP0912265B1 EP 0912265 B1 EP0912265 B1 EP 0912265B1 EP 97932851 A EP97932851 A EP 97932851A EP 97932851 A EP97932851 A EP 97932851A EP 0912265 B1 EP0912265 B1 EP 0912265B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- module
- modules
- blank
- holder
- blank holder
- 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
- 238000003754 machining Methods 0.000 claims description 5
- 238000009877 rendering Methods 0.000 claims 1
- 230000000903 blocking effect Effects 0.000 abstract description 4
- 238000005452 bending Methods 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 3
- 210000000056 organ Anatomy 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000036316 preload Effects 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
- B21D5/04—Bending sheet metal along straight lines, e.g. to form simple curves on brakes making use of clamping means on one side of the work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/04—Bending sheet metal along straight lines, e.g. to form simple curves on brakes making use of clamping means on one side of the work
- B21D5/045—With a wiping movement of the bending blade
-
- 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
- B21D5/04—Bending sheet metal along straight lines, e.g. to form simple curves on brakes making use of clamping means on one side of the work
- B21D5/047—Length adjustment of the clamping means
Definitions
- the present invention relates to a device allowing to adapt the size of a blank holder, according to the preamble of claim 1.
- a blank holder is a part of a machine tool intended for the machining of elements in the form of sheets, such as a sheet, allowing good maintenance of the sheet machined.
- a blank holder for example on a bending, stamping or folding machine.
- the size of the blank holder must be adapted to the dimension of the sheet to be machined as well as during the operation performed. In order to be able, on the same machine tool, machine sheets of different sizes, it is necessary to be able to change the size of the blank holder.
- Guide means are provided for the moving the blank holding modules of the second set as well as for the end modules.
- the main drawback of known systems capable of automatically adjusting the size of the hold-down is to perform this operation in a time relatively long, thus limiting productivity by flexibility.
- the time required to machine the sheet is less than the adaptation time of the blank holder by known systems. Therefore, a user seeks to produce several pieces of the same dimension before changing the size of the blank holder.
- the manufacturers recommend carrying out first on the machine tool fitted with a modular blank holder operations requiring a short hold-down, then those requiring a long blank holder. The user is therefore brought to adapt the order of realization of machining according to these constraints.
- the object of the invention is therefore to provide a device for adjusting the size of a blank holder allowing you to change this size very quickly so improve the flexibility of a machine tool intended for receive this blank holder and allow to realize different machining operations in any order, without as much alter the cycle time.
- a change in configuration of the blank holder may then be carried out very quickly. Just move blank holding modules useless for the realization of a predefined folding towards the ends of the guide means and group the blank holding modules necessary for this folding in the center of the guide means and then bringing using the gripping means an end module to each end of the group of hold-down modules for form a blank holder of the desired size to achieve the folding. All these operations can be carried out quickly, because the hold-down modules can move together with the end modules.
- a module called a central module
- the hold-down modules located in the same side of the central module are all alike and the modules blank holder on one side of the central module have a length in the direction of the guide means different from those on the other side of the module central.
- the central module then serves as a stop during moving the blank holder modules.
- the different length hold-down modules on either side of the module central offers a greater variety of different lengths of blank holder. If for example all the blank holder modules and the central module have a length of 100 mm, the assembly formed by the modules hold-down and the central module will always have a length multiple of 100 mm.
- the blank holding modules on one side have a length of 100 mm and those on the other side a length of 50 mm or 150 mm, it will be possible to also have multiple total lengths of 50 mm. Of course other values and other reports in length are possible.
- the guide means consist of at least one rail straight integral with the frame.
- the blank holder modules are mounted on two parallel rails between which a bar is guided drive, and the locking means allow make each blanket module independent of the others either secured to the drive bar, or secured guide rails.
- To move blank holder modules just make them integral with the bar and move it with these modules.
- the other blank holding modules that should not move remain integral with the frame.
- To move all the modules blank holder to be moved just move one times the drive bar in one direction with the modules moving in the same direction and then moving them blank holding modules to be moved in the opposite direction.
- each blank holder module has a piece of lock that can move perpendicular to guide rails, perpendicular to the rails guide a U-shaped section, the end of a branch of the U lying in a longitudinal groove made in a rail, the other end of the branch facing the other guide rail and the drive bar making protruding between these two branches.
- a spring preloads the locking piece in one direction, making it integral with the frame or the bar drive, and finally, a cylinder is provided to act on against the spring in order to make the piece of integral locking of the drive bar or built.
- the training bar To train the training bar, it is fitted with a rack meshing with a toothed wheel driven by a motor.
- a rack meshing with a toothed wheel driven by a motor Other means are of course possible: the bar can for example be connected to a cylinder or to a linear motor.
- the means of gripping and handling can consist of a clamp moving longitudinally on the frame.
- a manipulator robot we may also consider other solutions, such as example a manipulator robot.
- a device according to the invention on a machine intended for make folds on a sheet, comprising two blank clamps and a folding tool. In such a machine, it it is not useful to have two modular blanks, one alone is usually enough.
- Such a machine, or folding machine can adapt the size of the hold-down for the time necessary to let the folded sheet go and a sheet to bend take square.
- a machining center is proposed, characterized in that it comprises two folding machines comprising a device according to the invention, the two machines facing each other, being able to move towards or away from each other, and in that a conveyor intended to convey sheets is placed between the two machines.
- the conveyor can also be fitted with a central rotator, which takes place between the two folding machines, and allows to rotate sheets to be folded on four sides -or more-.
- the Figure 1 shows a machine for bending sheets provided with such a device.
- This machine or folding machine, comprises a bench 2, a brush table 4 intended to receive a sheet (not shown in this figure) to fold, a folding 6, a fixed lower blank holder 8, a blank holder upper 10 mounted on an arm 12 pivoting around a axis 14, as well as a manipulator robot 16 intended for move the sheets to be folded.
- the width of the upper blank holder 10 is modular.
- the folder can adapt to very many sheet sizes and several types of folding.
- the means to modify the size of the hold-down clamps 10 are described below.
- Figures 2 and 3 schematically show the upper blank holder 10 of the folder of FIG. 1 as well that the device for varying the width of this one.
- the blank holder 10 has several blank holder modules 18,19, all of generally similar shape. When all the hold-down modules 18.19 are against each other, they form a hold-down resembling known hold-downs.
- Figures 2 and 3 show a frame 20 carrying two parallel straight rails 22 on which are guided blank holder modules 18, two magazines 24.25, each store being placed at one end of the frame 20, as well as two pieces 26 guided in translation on the frame 20, parallel to the rails 22.
- the 18.19 hold-down modules are of two widths different. In the drawing, the least 18 modules wide are mounted on the left end side of the rails 22, while the widest modules 19 are mounted on the right. So there are two sets of modules hold-down. These two sets are separated by a module central 28 fixed, serving as a stop for the blank holder modules 18.19 mobiles. The general form of this module central 28 is similar to that of the hold-down modules 18.19 mobiles.
- Each mechanism has two pulleys 30, whose axes are perpendicular to the rails 22.
- a belt 32 connects these two pulleys 30.
- a clamp 26 is fixed on the strand upper belt 32 and is guided on the strand inferior.
- An electric motor 34 drives a pulley in rotation. The latter is at the end of the frame 20.
- the other pulley 30 is located substantially central module height 28.
- Each 24.25 store is intended for the storage of end modules 36.37.
- Figure 12 shows one of these end modules.
- each end module can be placed on a corresponding blank holder module.
- the clamps 26 are intended to grip an end module 36,37 stored in its 24.25 store to place it on a blank holder module 18.19, or vice versa, as well as maintaining the module end 36.37 entered in position on the blank holder module 18.19.
- Each clamp 26 can only serve the hold-down modules 18.19 located on the same side of the central module 28.
- the end modules 36 stored in store 24 located on the left in the figures are intended to take place on a blank holder module 18, while the end modules 37 stored in the store 25 located on the right in the figures are intended for take place on a blank holder module 19.
- Each clamp 26 comprises a jack 38.
- a first degree of freedom (belt) allows to move the module end to the corresponding blank holder module and the second degree of freedom (cylinder) allows to fit the end module on the blank holder module.
- Figures 4 to 6 illustrate how can move the blank holder modules 18,19.
- This drive bar 40 is provided of a rack 42 at one of its ends, on which meshes a toothed wheel 44 driven in rotation by a motor (not shown).
- Each 18.19 blank holder module is fitted with a device allowing it either to be integral with the rails 22, or to be integral with the drive bar 40.
- the drive bar 40 moves, it carries with it the hold-down modules 18.19 which are fixed on it, the others remaining motionless. It is so possible to move each blank holder module individually, or a group of hold-down modules, or any other possible combination.
- FIGS 5 and 6 show in section a module blank holder 18 and its associated blocking device. This the latter notably comprises a locking piece 46, a spring 48 and a pneumatic cylinder 50.
- the locking piece 46 is placed in a housing in the face of the blank holder module turned towards the rails 22. This housing is such that the lock can move perpendicular to rails 22.
- the locking piece 46 In a section plane perpendicular to the rails 22 ( Figures 5 and 6), the locking piece 46 has a generally U-shaped section.
- the branches of the U are oriented towards the rails 22.
- the end of a first branch is housed in a groove 52 formed longitudinally in a rail 22.
- the second branch is facing the other guide rail 22.
- the bar drive 40 projects from the two rails 22 and is found between the two branches of the piece of lock 46.
- the second branch of this part 46 makes facing the drive bar 40.
- the piece of locking On the side of its first branch, the piece of locking is subjected to the action of spring 48, which acts in the direction of pushing the first branch of the locking part towards the drive bar 40.
- spring 48 From side of the second branch is the cylinder pneumatic 50. The latter can act on the workpiece lock 46 against spring 48 and therefore push the second branch towards the bar training 40.
- Figure 5 shows the position of the blank holder module 18 when the jack 50 does not act.
- Spring 48 then pushes the locking piece 46 towards the bar 40.
- the first branch of this piece of locking 46 then comes to bear against the wall of the groove 52 formed in a rail 22.
- the blank holder module 18 moves in the opposite direction, that is to say to the left in FIG. 5.
- the module 18 then comes to bear on the outer face of the rail 22 opposite the spring 48.
- the blank holder module is blocked on the two rails 22 and is therefore integral with the frame 20.
- Figure 6 shows the position of the blank holder module 18 when the cylinder 50 acts.
- the cylinder 50 then pushes the locking piece 46 so that its second branch comes to bear against the drive bar 40.
- the blank holder module 18 moves in the opposite direction of movement of the workpiece lock 46, i.e. to the right on the figure 6.
- the dimensions of the various guide grooves for guiding the blank holder module 18 on the rails 22 are such that the blank holder module 18 comes while pressing on the drive bar 40, and not on the rail 22 opposite the pneumatic cylinder 50. In this way, the blank holder module 18 is integral with the bar training 40.
- Figures 7-10 show several possible configurations of blank holder, among many others, obtained by combining modules hold-down clamp 18.19 and end modules 36.37.
- the Figure 7 shows a configuration where all the modules hold-downs 18.19 are grouped around the module central 28 and at each end there is a module end 36.37.
- Figure 8 shows another configuration. For go from the configuration of figure 7 to that of the figure 8, several steps are necessary but they can be done very quickly.
- Modules 36.37 are first replaced in their respective stores.
- the three hold-down modules 18 le further left in Figures 7 and 8 are rendered integral with the drive bar 40. The latter is moved to the left. The pressure in the cylinders 50 corresponding to these three blank holder modules 18 is released. These modules therefore become integral with rails 22 and are fixed relative to the frame 20.
- the three right-hand hold-down modules 19 in FIG. 7 are then made integral with the drive bar 40 by putting the corresponding cylinders 50 under pressure. All the other 18.19 hold-down modules remain integral with the rails 22 and are fixed relative to the frame 20.
- the drive bar 40 moves towards the right, bringing with it the three hold-down modules 19.
- the clamps 26 each grip an end module 36,37 in a corresponding store 24.25 and position it on the module 18.19 forming the end of the blank holder.
- the modules end 36.37 can stay in place and end up between two hold-down modules 18,19, as shown in figure 9. The time required to change configuration can then be slightly reduced.
- Figure 10 shows a configuration where a module end 37 is placed directly on the central module 28. It is thus possible to have a low hold-down width.
- widths of the hold-down modules 18.19 and end modules 36.37 it is possible to cover a whole range of widths for the hold-down obtained with an increment predetermined.
- the example of dimensions indicated below allows obtaining all the multiple widths from 5 mm to from the width of 310 mm.
- modules blank holder 18 with a width of 100 mm which will be on the example shown in the drawing to the left of the module central 28, hold-down modules 19 with a width of 150 mm, which will be to the right of the central module 28, four end modules 36 associated with store 24 and therefore intended to be mounted on hold-down modules 18 of 80 mm, 90 mm, 100 mm and 105 mm, and four modules end 37 associated with the store 25 and therefore intended for be mounted on 19 x 80 mm, 85 mm blank clamp modules, 95 mm and 105 mm.
- the hold-down comprises five hold-down modules 18 of 100 mm and four 150 mm blank holder modules 19, it is possible to assemble the various modules 28,18,19,36,37 to obtain any width of blank holder multiple of 5 mm and between 310 mm and 1310 mm.
- the movement of the clamps 26 and the training bar 40 can be managed with the help of a computer (not shown), which, depending on the width of the blank holder required and the type of fold to carry out, calculate the configuration to be adopted and the course of the various organs then provides this information to a central control system that manages the movement of these organs.
- the design of the modular blank holder such as described above allows you to switch from one configuration to another in a very short time, from the order of ten seconds. It thus becomes possible to change configuration at the same time as you change sheet or position of this sheet. Contrary to machines known so far, which require time about ten times higher, it is possible to change the configuration of the blank holder in masked time.
- a conveyor not shown, provides a sheet 54 between the two folders.
- a central rotator 56 is between the two bending machines to turn a sheet which should optionally be folded on four sides -or more-.
- the two folding machines must be able to move away and get closer to one of the other.
- they are both mounted on a common bench 58.
- a computer and a system of central control can be provided to calculate and manage the movements of the two folders on the bench 58 common, but they can also manage hold-downs modular of the two folders.
- each blank holder module could be equipped with motor means allowing it to move by itself on guide means.
- the training bar would be replaced by a rack fixed extending over the entire length of the frame and each blank holder module would be fitted with an end motor shaft from which a gear would be mounted.
- a brake motor would prevent the gear from rotating, ensuring thus blocking the module relative to the frame.
- the modules could be guided on columns of guidance.
- the device for adapting the size of a hold-down is not necessarily suitable for a folder. he can very well be mounted on any machine with a blank holder, such as a bending machine or stamping.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Jigs For Machine Tools (AREA)
- Advancing Webs (AREA)
- Automatic Tool Replacement In Machine Tools (AREA)
- Machine Tool Sensing Apparatuses (AREA)
Description
- un bâti muni de moyens de guidage,
- des modules serre-flan destinés à se déplacer le long des moyens de guidage,
- des moyens pour bloquer indépendamment chaque module serre-flan dans une position donnée, caractérisé en ce qu'il comporte en outre :
- un magasin de modules d'extrémité placé à proximité de chaque extrémité des moyens de guidage,
- des moyens de préhension et de manipulation permettant de saisir un module d'extrémité dans un magasin pour l'emboíter sur un module serre-flan et de retirer un module d'extrémité emboíté sur un module serre-flan pour le replacer dans un magasin.
Claims (10)
- Dispositif permettant d'adapter la taille d'un serre-flan (10) comportant :un bâti (20) muni de moyens de guidage (22),des modules serre-flan (18,19) destinés à se déplacer le long des moyens de guidage,des moyens (46,48,50) pour bloquer indépendamment chaque module serre-flan (18,19) dans une position donnée,un magasin (24,25) de modules d'extrémité (36,37) placé à proximité de chaque extrémité des moyens de guidage,des moyens de préhension (26) et de manipulation permettant de saisir un module d'extrémité (36,37) dans un magasin (24,25) pour l'emboíter sur un module serre-flan (18,19) et de retirer un module d'extrémité (36,37) emboíté sur un module serre-flan (18,19) pour le replacer dans un magasin (24,25).
- Dispositif selon la revendication 1, caractérisé en ce qu'un module, appelé module central (28), est monté fixe par rapport au bâti (20) et en ce que de chaque côté du module central (28) se trouvent des modules serre-flan (18,19) mobiles, les modules serre-flan se trouvant d'un même côté du module central étant tous semblables et les modules serre-flan se trouvant d'un côté du module central présentant une longueur dans le sens des moyens de guidage différente de ceux situés de l'autre côté du module central.
- Dispositif selon la revendication 1 ou 2, caractérisé en ce que les moyens de guidage sont constitués par au moins un rail (22) rectiligne solidaire du bâti (20).
- Dispositif selon la revendication 3, caractérisé en ce que les modules serre-flan (18,19) sont montés sur deux rails (22) parallèles entre lesquels est guidée une barre d'entraínement (40), et en ce que les moyens de blocage (46,48,50) permettent de rendre chaque module serre-flan (18,19) indépendamment des autres soit solidaire de la barre d'entraínement (40), soit solidaire des rails de guidage (22).
- Dispositif selon la revendication 4, caractérisé en ce que chaque module serre-flan (18,19) comporte une pièce de verrouillage (46) pouvant se déplacer perpendiculairement aux rails de guidage (22), présentant perpendiculairement aux rails de guidage une section en U, l'extrémité d'une branche du U se trouvant dans une rainure (52) longitudinale réalisée dans un rail (22), l'autre extrémité de branche se trouvant face à l'autre rail de guidage (22) et la barre d'entraínement (40) faisant saillie entre ces deux branches,en ce qu'un ressort (48) précontraint la pièce de verrouillage (46) dans un sens, rendant celle-ci solidaire du bâti (20) ou de la barre d'entraínement (40), eten ce qu'un vérin (50) est prévu pour agir à l'encontre du ressort (48) afin de rendre la pièce de verrouillage (46) solidaire de la barre d'entraínement (40) ou du bâti (20).
- Dispositif selon la revendication 4 ou 5, caractérisé en ce que la barre d'entraínement (40) est munie d'une crémaillère (42) engrènant avec une roue dentée (44) entraínée par un moteur.
- Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que les moyens de préhension et de manipulation sont constitués par une pince (26) se déplaçant longitudinalement sur le bâti (20).
- Machine destinée à réaliser des plis sur une tôle, comportant deux serre-flans (8,10) et un outil de pliage (6), caractérisée en ce qu'elle comporte un dispositif permettant d'adapter la taille d'un serre-flan (10) selon l'une des revendications 1 à 7.
- Centre d'usinage, caractérisé en ce qu'il comporte deux machines selon la revendication 8, les deux machines se faisant face, pouvant se rapprocher ou s'éloigner l'une de l'autre, et en ce qu'un convoyeur destiné à convoyer des tôles est placé entre les deux machines.
- Centre d'usinage selon la revendication 9, caractérisé en ce qu'il comporte en outre un rotateur central (56) placé entre les deux machines destinées à réaliser des plis sur une tôle.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9608641 | 1996-07-05 | ||
FR9608641A FR2750626B1 (fr) | 1996-07-05 | 1996-07-05 | Dispositif permettant d'adapter la taille d'un serre-flan de machine-outil |
PCT/FR1997/001227 WO1998001245A1 (fr) | 1996-07-05 | 1997-07-07 | Dispositif permettant d'adapter la taille d'un serre-flan de machine-outil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0912265A1 EP0912265A1 (fr) | 1999-05-06 |
EP0912265B1 true EP0912265B1 (fr) | 2001-01-24 |
Family
ID=9493923
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97932851A Expired - Lifetime EP0912265B1 (fr) | 1996-07-05 | 1997-07-07 | Dispositif permettant d'adapter la taille d'un serre-flan de machine-outil |
Country Status (7)
Country | Link |
---|---|
US (1) | US6227028B1 (fr) |
EP (1) | EP0912265B1 (fr) |
AT (1) | ATE198845T1 (fr) |
DE (1) | DE69703978T2 (fr) |
ES (1) | ES2155692T3 (fr) |
FR (1) | FR2750626B1 (fr) |
WO (1) | WO1998001245A1 (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2397551T3 (es) | 2008-05-30 | 2013-03-07 | Goiti S. Coop. | Máquina paneladora |
US8146398B2 (en) * | 2010-08-11 | 2012-04-03 | Cheng Uei Precision Industry Co., Ltd. | Crust bending apparatus |
AT519221B1 (de) * | 2016-12-06 | 2018-05-15 | Trumpf Maschinen Austria Gmbh & Co Kg | Fertigungsanlage mit einem Klemmwerkzeug sowie Verfahren zur Anpassung einer Gesamtlänge einer Biegekante des Klemmwerkzeugs |
CN108637100A (zh) * | 2018-07-14 | 2018-10-12 | 青岛城之美创意科技股份有限公司 | 一种模块化万能v型折弯底模 |
CN111069424A (zh) * | 2020-01-10 | 2020-04-28 | 新多集团有限公司 | 一种门板折边机半自动换模装置 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58148021A (ja) * | 1982-02-26 | 1983-09-03 | Hitachi Ltd | 板材折曲げ装置 |
JPS5944616U (ja) * | 1982-09-08 | 1984-03-24 | 丸機械工業株式会社 | フオ−ルデイングマシン用金型交換装置 |
US4658625A (en) * | 1984-03-30 | 1987-04-21 | Amada Company, Limited | Bending machine and a die changing system for such bending machine |
US4722214A (en) * | 1985-03-12 | 1988-02-02 | Murata Kikai Kabushiki Kaisha | Split die for holding work during bending operation |
AT385688B (de) * | 1986-08-14 | 1988-05-10 | Voest Alpine Ag | Vorrichtung zum abkanten von blechzuschnitten |
EP0332221A3 (fr) * | 1988-03-11 | 1991-03-13 | Josef Niedermaier | Machine à plier |
US5168745A (en) * | 1989-04-10 | 1992-12-08 | Yamazaki Mazak Kabushiki Kaisha | Die exchange apparatus for the use of a press brake |
FI96008C (fi) * | 1994-02-10 | 1996-04-25 | Balaxman Oy | Menetelmä ja laitteisto taivutuskoneessa |
EP0713734B1 (fr) * | 1994-11-24 | 2002-02-20 | AMADA COMPANY, Ltd. | Dispositif pour presser des pièces à usiner pour un ensemble variable à étapes présélectionnées pour presses plieuses |
-
1996
- 1996-07-05 FR FR9608641A patent/FR2750626B1/fr not_active Expired - Fee Related
-
1997
- 1997-07-07 AT AT97932851T patent/ATE198845T1/de not_active IP Right Cessation
- 1997-07-07 WO PCT/FR1997/001227 patent/WO1998001245A1/fr active IP Right Grant
- 1997-07-07 US US09/214,487 patent/US6227028B1/en not_active Expired - Fee Related
- 1997-07-07 DE DE69703978T patent/DE69703978T2/de not_active Expired - Fee Related
- 1997-07-07 ES ES97932851T patent/ES2155692T3/es not_active Expired - Lifetime
- 1997-07-07 EP EP97932851A patent/EP0912265B1/fr not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ES2155692T3 (es) | 2001-05-16 |
FR2750626A1 (fr) | 1998-01-09 |
DE69703978D1 (de) | 2001-03-01 |
ATE198845T1 (de) | 2001-02-15 |
DE69703978T2 (de) | 2001-05-10 |
FR2750626B1 (fr) | 1999-01-29 |
US6227028B1 (en) | 2001-05-08 |
WO1998001245A1 (fr) | 1998-01-15 |
EP0912265A1 (fr) | 1999-05-06 |
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