EP1545808B1 - Machine a cintrer - Google Patents

Machine a cintrer Download PDF

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Publication number
EP1545808B1
EP1545808B1 EP03740347A EP03740347A EP1545808B1 EP 1545808 B1 EP1545808 B1 EP 1545808B1 EP 03740347 A EP03740347 A EP 03740347A EP 03740347 A EP03740347 A EP 03740347A EP 1545808 B1 EP1545808 B1 EP 1545808B1
Authority
EP
European Patent Office
Prior art keywords
drive
bending machine
machine according
force
bending
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
Application number
EP03740347A
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German (de)
English (en)
Other versions
EP1545808A1 (fr
Inventor
Wolfgang Kutschker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RAS Reinhardt Maschinenbau GmbH
Original Assignee
RAS Reinhardt Maschinenbau GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by RAS Reinhardt Maschinenbau GmbH filed Critical RAS Reinhardt Maschinenbau GmbH
Publication of EP1545808A1 publication Critical patent/EP1545808A1/fr
Application granted granted Critical
Publication of EP1545808B1 publication Critical patent/EP1545808B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/02—Stamping using rigid devices or tools
    • 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
    • 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
    • B21D5/042—With a rotational movement of the bending blade

Definitions

  • the invention relates to a bending machine comprising a machine frame, a bending beam with a bending beam tool which is pivotable about a pivot axis to bend a tab of a workpiece made of flat material, a top cheek with a top cheek tool and a bottom cheek with a lower cheek tool, wherein the upper cheek and the lower cheek movable relative to each other are mounted on the machine frame, and at least one drive for moving toward each other of the Oberwangentechnikmaschines and the lower cheek tool to act on a lying therebetween workpiece from sheet material for bending the flap by means of the bending cheek.
  • Such bending machines are known from the prior art (see for example DE 38 37 603 A1).
  • the drive is dimensioned so that it can generate large enough forces to hold a workpiece between the upper beam and the lower beam.
  • the invention is therefore an object of the invention to improve a bending machine of the generic type such that the largest possible, acting from the upper beam tool and lower beam tool on the workpiece forces are achievable as inexpensively.
  • the at least one drive at least one traversing drive for generating an opening and closing movement of the upper beam and lower beam relative to each other and at least one power drive to generate a larger force than the traversing drive for forming the between the upper cheek tool and the lower cheek tool arranged workpiece comprises, and that the positioning drive is stationary during forming and blocked.
  • the advantage of the solution according to the invention is the fact that with the traversing a fast relative movement between the upper beam and lower beam is generated while the power drive opens up the additional possibility to act with great forces of Oberwangentechnikmaschinemaschine and lower beam tool on the workpiece to perform in this forming to be able to.
  • reshaping is to be understood as a shaping of a workpiece under the interaction of the upper cheek tool and the lower cheek tool.
  • Such reshaping includes, for example, closing and compressing bends or envelopes, embossing beads or any other type of forming operations in flat materials.
  • the power drive can be interpreted particularly favorably if it is designed to produce a force that moves the upper beam tool and the lower beam tool toward one another at a lower travel speed than the traction drive.
  • the drive power for the power drive can be kept small in spite of large power generated and the fast, over long travel paths traversing movements can be moved to the traversing drive.
  • the force that can be generated by the power drive exceeds the force that can be generated by the travel drive by a factor of at least two, better at least five, even better at least ten.
  • an advantageous embodiment provides that the end of the upper beam of the at least one respective drive and a power drive comprehensive drive is arranged.
  • the drive unit causes a relative movement of the upper beam to the lower beam, and thereby acts on the upper beam and the lower beam, so it is not necessarily provided that the drive unit only directly and directly on the upper beam and the lower cheek must act.
  • one of the cheeks, in particular the lower cheek is firmly connected to the machine frame.
  • the drive unit also acts within the meaning of the invention only between the upper beam and lower beam when the drive unit engages the machine frame, since this is firmly connected to one of the cheeks and thus also the drive unit between this firmly connected to the machine frame cheek and the movable cheek is connected.
  • the traversing drive comprises a blocking device effective at standstill.
  • This blocking device provides the opportunity to ensure that the traversing drive executes in any case at a standstill no movement and thus the entire force of the power drive can be effective.
  • a blocking device provides another favorable solution that the traversing drive is blocked at standstill by self-locking.
  • This solution has the advantage that the blocking device can be omitted or at least, if it is still available for security reasons, can be designed so that it has to absorb lower forces.
  • the positioning drive is designed as a spindle drive, comprising a threaded spindle and a spindle nut.
  • the power drive is designed as a hydraulic drive.
  • the hydraulic drive comprises a plurality of parallel piston surfaces.
  • the hydraulic drive could indirectly, ie be effective via an intermediate gear, it is particularly favorable, however, if the hydraulic drive is arranged directly acting in the drive unit, that is, the hydraulic drive causes the relative movement of the upper beam and lower beam itself without intermediate gear.
  • a hydraulic unit of the hydraulic drive is arranged on one of the cheeks.
  • the power drive comprises a lever mechanism with a drive for this.
  • the drive for the lever mechanism can be either a rotary actuator or a linear drive. It is even conceivable as a linear drive to provide a pneumatically or hydraulically actuated cylinder.
  • the bending machine according to the invention can be formed more easily if a control is provided which uses either the travel drive or the power drive, so that in particular the travel drive does not have to work under conditions in which the greater force of the power drive is effective.
  • the force generated by the power drive can be controlled by the controller, so that the use of the full force of the power drive can be dosed only at the respective corresponding processing operations.
  • a particularly advantageous solution provides that the controller uses the power drive depending on the particular machining operation.
  • the power drive is then used only in those cases in which a deformation of the workpiece, so for example a bending of an envelope, closing an envelope or any kind of further forming process is to be performed by the upper cheek and the lower cheek tool.
  • control during clamping of the workpiece for bending the same by means of the bending beam finally uses the power drive, so that the power drive always acting ultimately on the workpiece Force generated.
  • control of each application of the workpiece by means of the Oberwangentechnikmaschines and the lower beam tool to a processing of the workpiece finally uses the power drive and thus in each case for processing the producible by the power drive force can be exploited.
  • An embodiment of a bending machine according to the invention shown in Figure 1, comprises a generally designated 10 machine frame, with lateral uprights 12 and 14, between which, as shown in Figure 2, a top cheek 16 and a bottom cheek 18 extend.
  • the lower beam 18 is fixedly connected to the uprights 12 and 14, while the upper beam 16 is movable relative to the lower beam 18.
  • the upper beam 16 carries a Oberwangenwerkmaschine 20 and the lower cheek 18 a lower cheek tool 22, between which a workpiece 24 made of flat material, such as sheet metal, so clamped that from this on the Oberwangenwerkmaschine 20 and the lower cheek tool 22 protruding cloth from a through the lower cheek tool 22 and the Oberwangenwerkmaschine 20 fixable plane 28 is clearlybiegbar.
  • the bending machine is provided with a bending cheek 30 which extends between the end of the same arranged bending cheek holders 32 and with these bending cheek holders 32 is movable about a pivot axis 34, wherein the pivot axis 34 is preferably above the clamping plane 28.
  • the bending cheek acts with a bending beam tool 36 on the fold over tab 26 of the workpiece for bending, wherein the entire bending cheek 30 is pivotable about the pivot axis 34.
  • the bending machine is provided with a controllable by a controller 42 drive, comprising two drive units 46 and 48, each in end portions 52 and 54 of the Upper cheek 16 and the lower cheek 18 are arranged, and a relative movement between the upper cheek 16 and the lower cheek 18, in the example illustrated lifting the upper jaw 16 with the Oberwangentechnikzeug 20 from lying on the lower cheek 18 with the lower cheek tool 22 workpiece 24 or applying the Workpiece 24 with the upper beam tool 20 against the lower beam tool 22 effect.
  • a controller 42 drive comprising two drive units 46 and 48, each in end portions 52 and 54 of the Upper cheek 16 and the lower cheek 18 are arranged, and a relative movement between the upper cheek 16 and the lower cheek 18, in the example illustrated lifting the upper jaw 16 with the Oberwangentechnikmaschine 20 from lying on the lower cheek 18 with the lower cheek tool 22 workpiece 24 or applying the Workpiece 24 with the upper beam tool 20 against the lower beam tool 22 effect.
  • each of the drive units in this case the illustrated drive unit 46, comprises a travel drive 56 and a power drive 58, which are both directly coupled to each other, so that the drive unit 46 on the one hand bears on a bearing element 62 acts, which is fixedly connected to the upper beam 16 and on the other hand acts on the lower beam 18 via a fixedly connected to the lower beam 18 bearing member 64.
  • the drive unit 46 is constructed so that both the travel drive 56 and the power drive 58 either alternately or jointly act on the bearing element 62 and on the bearing element 64, depending on how they are controlled by the controller 42.
  • the traversing drive 56 comprises a non-rotatably held threaded spindle 66, which extends transversely to the clamping plane 28 with its longitudinal axis 68 and thereby passes through a spindle nut 70 in the direction of the longitudinal axis 68 of the threaded spindle 66 by two bearings 72nd and 74 immovably, but is rotatably held about the longitudinal axis 68 in the bearing housing 64 designed as a bearing element 64.
  • this is peripherally provided with an outer toothing 76, in which a worm 78 engages, so that the worm 78 and the outer toothing 76 form a worm gear.
  • the worm 78 is driven by a common drive shaft 80 which extends between the two drive units 46 and 48 and in turn via a reduction gear 82 by a motor 84 anteibbar so that always the spindle nuts 70 both drive units 46 and 48 synchronously to each other via the Motor 84 can be driven.
  • the entire travel drive 56 that is, the totality of threaded spindle 66, spindle nut 70, worm gear 76, 78, reduction gear 82 and motor 84 is formed so that it at standstill of the motor 84 due to the self-locking movement of the threaded spindle 66 in the direction of its longitudinal axis 68th blocked.
  • the threaded spindle 66 is connected to one end 88, preferably with the upper cheek 16 end facing 88, fixed to a piston rod 92 of a triple piston 94, which, as in Figure 3 and 4 three in the direction a longitudinal axis 96 of the piston rod 92 successively arranged annular piston surfaces 102, 104, 106, which facing cylinder chambers 112, 114, 116 are arranged in a cylinder housing 118, wherein the cylinder chambers 112, 114, 116 via a distribution channel 120 in the cylinder housing 118 simultaneously fed hydraulic medium is, so that by applying the piston surfaces 102, 104, 106 in small construction of the power drive 58, a large force can be generated.
  • the supply of the cylinder chambers 112, 114, 116 is effected by a hydraulic unit 122, which is preferably seated on the upper cheek 16 and can be controlled by the controller 42 to produce pressurized hydraulic medium for movement of the piston 94 relative to the cylinder housing 118.
  • the cylinder housing 118 is in turn seated on the fixedly connected to the upper beam 16 bearing member 62, and the same on a lower cheek 18 side facing away, so that an admission of the cylinder chambers 112, 114, 116 with hydraulic medium causes the cylinder housing 118 on the bearing element 62 acts and this is acted upon together with the upper beam 16 in the direction of the lower beam 18 and thus the cylinder housing 118 moves relative to the piston rod 92 in the direction of the lower beam 18.
  • a plate spring package 124 is provided, which is supported on the one hand on the bearing element 62 and on the other hand to a support ring 126, which simultaneously represents a connection to the end 88 of the spindle 66.
  • the plate spring assembly 124 causes the bearing member 62 moves together with the upper beam 16 in the direction of the lower beam 18 away when the cylinder chambers 112, 114, 116 are depressurized and thus the cylinder housing 118 against the piston 94 in the direction of the lower beam 18 away can move.
  • the cup spring package 124 is dimensioned so that the cylinder housing 118 is displaced away from the lower beam 18 up to a mechanical stop without pressurizing the cylinder chambers 112, 114, 116.
  • the force is sufficient, for example, in many bending operations by means of the bending cheek 30 to clamp the workpiece 24.
  • the power drive 58 can be used, which is able to generate a force which exceeds that of the travel drive 56 by more than twice, more preferably five times, preferably more than ten times. However, the power drive 58 only allows speeds of relative movement between the upper beam 16 and the lower beam 18 in the range of a few millimeters per second or less.
  • the much higher force which can be generated with the power drive 58 offers the advantage of also implementing additional operations, for example forming of the workpiece, with the bending machine, as shown in FIG. 5 or FIG.
  • additional operations for example forming of the workpiece, with the bending machine, as shown in FIG. 5 or FIG.
  • the use of the power drive 58 is always carried out in the simplest case with stationary positioning drive 56, wherein by the force of the power drive 58 no Reaction to the travel drive 56 to the effect that this would also be adjusted takes place because - as already stated - the positioning drive 56 is designed to be self-locking.
  • the hydraulic unit 122 in such a way that dosed over this the force generated by the power drive 58 and controlled predetermined, so that depending on the type of machining of the workpiece 24 different forces generated by the power drive 58 can be used.
  • the positioning drive 56 is formed in the same manner as in the first embodiment.
  • the power drive 58 ' is not formed as a direct-acting hydraulic drive, but as a lever gear 130 with a long lever 132 and a short lever 134, starting from a common articulated connection point 136 of the long lever 132 with a hinge 138 with the upper beam 16 is connected, while the short lever is connected via a hinge 140 with a power transmission rod 142, which in turn is in communication with the end 88 of the threaded spindle 66.
  • a linear drive 142 is provided for moving the pivot point 136, which may be, for example, a hydraulic drive, but alternatively also a spindle drive.
  • the linear drive 142 is in turn connected via a hinge point 144 also connected to the upper beam 16 and thus mitbewegbar with this.
  • each of the drive units in this case comprises the drive unit 46 ", a power drive 58, which corresponds to that of the first embodiment, while the traversing drive 56 'by a Hydraulic cylinder 150 is formed, which can be fed by a hydraulic unit 152 to drive the upper beam 16 away from the lower beam 18 up and down.
  • the hydraulic cylinder 150 In order to use the power drive 58 at standstill of the hydraulic cylinder 150, the hydraulic cylinder 150 must also be able to absorb the forces applied by the power drive 58. Since this alone is problematic to realize with the hydraulic cylinder 150, the travel drive 56 'is provided with a blocking device 154.
  • a toothed rod 158 arranged as an extension of a piston rod 156 of the hydraulic cylinder 150 and two frontally toothed holding jaws 162 and 164 arranged in a housing 160 interspersed by the toothed rod 158, which are connected via pressure chambers 166 and 168 in the direction of the toothed rod 158 or 158 be moved away from the latter, wherein the holding jaws 162 and 164 engage positively in the state acted upon for the toothed rod 158 in this state.
  • the hydraulic unit 152 is operated so that it always inevitably at standstill of the hydraulic cylinder 150, the blocking device 154 is activated and thus the traverse drive 56 'is automatically blocked at standstill of the hydraulic cylinder 150 against movement, so that the traversing drive 56' at standstill always in the It is able to absorb the forces that may be generated by the power drive 58.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Inorganic Insulating Materials (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Secondary Cells (AREA)
  • Press Drives And Press Lines (AREA)

Claims (21)

  1. Machine à cintrer comprenant un bâti de machine (10), une joue de cintrage (30) avec un outil de joue de cintrage (36) orientable autour d'un axe de pivotement (34) pour plier une patte (26) d'une pièce (24) en matériau plat, une joue supérieure (16) avec un outil de joue supérieure (20) et une joue inférieure (18) avec un outil de joue inférieure (22), ladite joue supérieure (16) et ladite joue inférieure (18) étant disposées sur le bâti de machine (10) et mobiles l'une par rapport à l'autre, et au moins un entraînement (46, 48) destiné au déplacement de l'outil de joue supérieure (20) et de l'outil de joue inférieure (22) l'un vers l'autre, en vue de serrer la pièce (24) en matériau plat se trouvant entre ces derniers et de cintrer la patte à l'aide de la joue de cintrage (30), caractérisée en ce que l'entraînement (46, 48) au moins comporte au moins un entraînement de translation (56) pour la création d'un mouvement d'ouverture et de fermeture de la joue supérieure (16) et de la joue inférieure (18) l'une par rapport à l'autre, et au moins un entraînement de force (58) pour la production d'une force supérieure à l'entraînement de translation (56) pour le façonnage de la pièce (24) disposée entre l'outil de joue supérieure (20) et l'outil de joue inférieure (22), et en ce que l'entraînement de translation (56) est à l'arrêt et bloqué lors dudit façonnage.
  2. Machine à cintrer selon la revendication 1, caractérisée en ce que l'entraînement de force (58), lors de la production d'une force déplaçant l'outil de joue supérieure (20) et l'outil de joue inférieure (22) l'un vers l'autre, est configuré avec une vitesse de translation plus petite que l'entraînement de translation (56).
  3. Machine à cintrer selon la revendication 1 ou 2, caractérisée en ce que la force produite par l'entraînement de force (58) est supérieure à la force pouvant être produite par la commande de translation (56) d'un facteur minimum de deux.
  4. Machine à cintrer selon l'une quelconque des revendications précédentes, caractérisée en ce qu'en extrémité de la joue supérieure (16) et de la joue inférieure (18) est disposée au moins la commande comportant un entraînement de translation (56) et un entraînement de force (58).
  5. Machine à cintrer selon la revendication 4, caractérisée en ce que des deux côtés de la joue supérieure (16) et de la joue inférieure (18) est disposé l'un des entraînements (56, 58).
  6. Machine à cintrer selon l'une quelconque des revendications précédentes, caractérisée en ce que l'entraînement de force (58) et l'entraînement de translation (56) sont regroupés pour former un ensemble d'entraînement (46, 48) en tant qu'unité qui n'est efficace qu'entre la joue supérieure (16) et la joue inférieure (18).
  7. Machine à cintrer selon l'une quelconque des revendications précédentes, caractérisée en ce que l'entraînement de translation (56') comprend un dispositif de blocage (154) efficace à l'arrêt.
  8. Machine à cintrer selon l'une quelconque des revendications précédentes, caractérisée en ce que l'entraînement de translation (56) est bloqué à l'arrêt par autoblocage.
  9. Machine à cintrer selon l'une quelconque des revendications précédentes, caractérisée en ce que l'entraînement de translation (56) est configuré comme commande à broche comportant une broche filetée (66) et un écrou-broche (70).
  10. Machine à cintrer selon la revendication 9, caractérisée en ce que l'écrou-broche (70) peut être commandé par un moteur d'entraînement (84).
  11. Machine à cintrer selon la revendication 9 ou 10, caractérisée en ce que l'écrou-broche (70) est commandé par l'intermédiaire d'un engrenage à blocage automatique (76, 78).
  12. Machine à cintrer selon l'une quelconque des revendications précédentes, caractérisée en ce que l'entraînement de force (58) est configuré en tant que commande hydraulique (94, 118).
  13. Machine à cintrer selon la revendication 12, caractérisée en ce que la commande hydraulique (94, 118) comporte plusieurs surfaces de piston (102, 104, 106) agissant de manière parallèle.
  14. Machine à cintrer selon la revendication 12 ou 13, caractérisée en ce que la commande hydraulique (94, 118) est disposée dans le groupe d'entraînement (46) et agit de manière directe.
  15. Machine à cintrer selon l'une quelconque des revendications 12 à 14, caractérisée en ce qu'un groupe hydraulique (122) de la commande hydraulique (94, 118) est disposé sur l'une des joues (16).
  16. Machine à cintrer selon l'une quelconque des revendications 1 à 13, caractérisée en ce que l'entraînement de force (58') comporte une commande par leviers (132, 134) avec un entraînement (142).
  17. Machine à cintrer selon l'une quelconque des revendications précédentes, caractérisée en ce qu'une commande (42) est prévue laquelle amorce soit l'entraînement de translation (56) soit l'entraînement de force (58).
  18. Machine à cintrer selon l'une quelconque des revendications précédentes, caractérisée en ce que la force pouvant être produite par l'entraînement de force (58) peut être contrôlée par la commande (42).
  19. Machine à cintrer selon l'une quelconque des revendications précédentes, caractérisée en ce que la commande (42) amorce l'entraînement de force (58) en fonction de l'opération de façonnage en cours.
  20. Machine à cintrer selon l'une quelconque des revendications précédentes, caractérisée en ce que la commande (42), lors du serrage de la pièce (24) en vue de son cintrage à l'aide de la joue de cintrage (30), amorce pour terminer l'entraînement de force (58).
  21. Machine à cintrer selon l'une quelconque des revendications précédentes, caractérisée en ce que la commande (42), lors de chaque mise en pression de la pièce (24) à l'aide de l'outil de joue supérieure (20) et de l'outil de joue inférieure (22), amorce pour terminer l'entraînement de force (58) en vue d'un façonnage.
EP03740347A 2002-09-26 2003-06-26 Machine a cintrer Expired - Lifetime EP1545808B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10245778 2002-09-26
DE10245778A DE10245778A1 (de) 2002-09-26 2002-09-26 Biegemaschine
PCT/EP2003/006730 WO2004033124A1 (fr) 2002-09-26 2003-06-26 Machine a cintrer

Publications (2)

Publication Number Publication Date
EP1545808A1 EP1545808A1 (fr) 2005-06-29
EP1545808B1 true EP1545808B1 (fr) 2007-05-02

Family

ID=31984321

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03740347A Expired - Lifetime EP1545808B1 (fr) 2002-09-26 2003-06-26 Machine a cintrer

Country Status (9)

Country Link
US (1) US7069762B2 (fr)
EP (1) EP1545808B1 (fr)
JP (1) JP2006500223A (fr)
AT (1) ATE361160T1 (fr)
DE (2) DE10245778A1 (fr)
DK (1) DK1545808T3 (fr)
ES (1) ES2285142T3 (fr)
PT (1) PT1545808E (fr)
WO (1) WO2004033124A1 (fr)

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CN104588453A (zh) * 2015-01-15 2015-05-06 上海应用技术学院 双驱动系统的简易数控折弯机
CN111069375A (zh) * 2019-12-29 2020-04-28 赵明亮 调节型折弯装置

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DE102014008879A1 (de) * 2014-06-16 2015-12-17 Hubert Troppmann Vorrichtung zur Erweiterung der Funktionalität einer Presse
DE102019104502B4 (de) * 2019-02-21 2021-01-14 Ralf Beger Kombimaschine zum Schwenk- und Gesenkbiegen eines Werkstücks sowie Verwendung einer Schwenkbiegemaschine als Abkantpresse

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CN104588453A (zh) * 2015-01-15 2015-05-06 上海应用技术学院 双驱动系统的简易数控折弯机
CN111069375A (zh) * 2019-12-29 2020-04-28 赵明亮 调节型折弯装置
CN111069375B (zh) * 2019-12-29 2021-06-08 陈恩义 调节型折弯装置

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ATE361160T1 (de) 2007-05-15
DE50307192D1 (de) 2007-06-14
DK1545808T3 (da) 2007-09-17
PT1545808E (pt) 2007-06-01
US7069762B2 (en) 2006-07-04
DE10245778A1 (de) 2004-04-08
ES2285142T3 (es) 2007-11-16
EP1545808A1 (fr) 2005-06-29

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