EP3302840B2 - Installation de fabrication pour la fabrication de pièces en tôle et procédé à cet effet - Google Patents

Installation de fabrication pour la fabrication de pièces en tôle et procédé à cet effet Download PDF

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Publication number
EP3302840B2
EP3302840B2 EP16735977.7A EP16735977A EP3302840B2 EP 3302840 B2 EP3302840 B2 EP 3302840B2 EP 16735977 A EP16735977 A EP 16735977A EP 3302840 B2 EP3302840 B2 EP 3302840B2
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EP
European Patent Office
Prior art keywords
clamping
manipulator
recess
workpiece
supporting
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EP16735977.7A
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German (de)
English (en)
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EP3302840B1 (fr
EP3302840A1 (fr
Inventor
Roberto DAL CERRO
Stefano Speziali
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.)
Trumpf Maschinen Austria GmbH and Co KG
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Trumpf Maschinen Austria GmbH and Co KG
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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
    • 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
    • B21D5/002—Positioning devices
    • 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
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/10—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers
    • B21D43/105—Manipulators, i.e. mechanical arms carrying a gripper element having several degrees of freedom
    • 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
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/10—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers
    • B21D43/11—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers for feeding sheet or strip material
    • 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

Definitions

  • the invention relates to a manufacturing system and a method for manufacturing workpieces from sheet metal, in particular by forming, the US 5,138,865 A describes a bending machine with a lower and an upper clamping jaw, between which the sheet metal to be formed or the already preformed workpiece to be produced can be clamped for the bending process.
  • a manipulator is provided for manipulating the metal sheet, which has a stationary gripper and a gripper that can be moved relative to it.
  • the fixed gripping tongs also form a support surface for the sheet metal.
  • the gripping tongs are arranged laterally next to the clamping jaws in the longitudinal extension of the bending area and can thus be moved past the clamping jaws without colliding with them.
  • the gripping tongs arranged above and below the metal sheet to be held can be adjusted close to the bending area.
  • recesses are provided in both clamping jaws on the side facing away from the bending area. Due to the cross-section of the recess, which is adapted to the shape of the pincer-like grippers on both sides, the clamping jaws were weakened too much in their clamping areas facing one another
  • the bending machine has a support plane made up of a plurality of section bars placed substantially parallel to each other and mutually spaced, as well as aligned along the direction of feeding/removal of the metal sheet.
  • the metallic flat element to be bent can be positioned on this support level.
  • a section of the metallic flat element can be bent upwards or downwards by means of a bending assembly.
  • a suction feeding group associated with the support plane and suitable for selectively feeding the metal sheet to the bending group.
  • the feeding group comprises one or more suction members oriented in a direction substantially transverse to the metal sheet to be bent.
  • the metallic flat element In their rest position, they are placed below the support level and are connected to one another, the metallic flat element being held on the support level by means of the suction elements.
  • the suction organs are further movable in a coplanar manner and/or by raising in relation to the support plane by means of a movement organ placed below the support plane. Furthermore, by this suction-feeding group, a pulling force can be exerted on the metallic flat element in the direction of the supporting plane.
  • the metallic flat element can also be moved substantially coplanarly with respect to the support plane.
  • a processing machine for plate-shaped workpieces in particular for producing curved edges on sheet metal parts, has become known.
  • the processing machine in particular a bending machine, allows the edges of plate-shaped workpieces to be bent and also trimmed or punched.
  • the workpieces can be gripped with a clamp belonging to a manipulator and fed to a tool and a holder.
  • the manipulator with its clamping tongs is arranged and stored above the processing level of the workpiece support.
  • the clamping tongs can also be adjusted parallel thereto and also mounted so as to be rotatable about an axis running at right angles to the plane of the workpiece.
  • the horizontal workpiece support is formed by upstanding bristles, which can be reshaped as required by the lower part of the gripper when immersed in it. Because of the relatively narrow, vertical design of the front, upper gripper arm, it was thus possible to hold workpieces clamped on both sides, which were relatively short in the vertical direction with respect to the bending area. However, this was not sufficient in some applications.
  • the present invention is based on the object of also enabling the handling and manipulation of sheet metal or already partially formed workpieces in the vicinity of the front surface of the clamping jaws of sheet metal or already formed legs of workpieces without reducing the strength of the clamping jaws in their Weaken the clamping area too much.
  • the manipulation device further comprises at least one plate-shaped second manipulator, which forms a support surface on its side facing the metal sheet or the workpiece to be produced, and in or on which support surface at least one second holding element is arranged or formed, and that in one of the clamping jaws at least one recess is arranged in its clamping surface, which recess is formed, starting from the clamping surface over a height in the vertical direction with respect to the clamping surface, recessed into the clamping jaws and extending in the direction of a bending area, and that the plate-shaped second manipulator has a thickness in the vertical direction with respect to the clamping surface, which corresponds at most to the height of the recess and for manipulating the sheet metal to be processed or the workpiece to be produced at least partially in the at least ei ne recess is received, and that the at least one recess is arranged in the lower clamping jaw or jaws, the at least one second manipulator being supported in its position received in the recess on
  • the plate-shaped or strip-shaped design of the second manipulator in the direction of the bending area allows a flat structural unit to be created which is only placed on one side of the sheet metal to be processed for the manipulation of the same and via the in or on the support surface formed own second holding elements can be held positioned. It is thus possible, with the clamping jaws open, to bring the sheet metal to be processed or the already pre-bent workpiece between the clamping surfaces, which are still spaced apart from one another, by means of the second manipulator.
  • the at least one second manipulator can be inserted into the recess formed in the respective clamping jaw or protrude into it, as a result of which the metal sheet can be held in the overlapping area with at least one of the clamping surfaces.
  • the metal sheet in the region of the recess can also be supported by the respective manipulator and, with appropriate dimensional coordination, a clamping effect can also be achieved.
  • a sufficient supporting effect and optionally also a clamping effect can be achieved by the second manipulator protruding at least in regions into the recess.
  • the dimensions of the clamping jaws in the "X" direction can correspond to those of conventional clamping jaws. Since the sheet metal can be held by the manipulator with the at least one second holding element, the clamping length in the "X" direction, including a possible small gap distance, represents the length that corresponds to the narrowest component to be clamped.
  • the at least one recess extends into the clamping jaws, starting from a front surface of the clamping jaws that faces away from a bending region of the latter.
  • the second manipulator can also be arranged in the area of the operating side of the bending machine and an unhindered, continuous bending area can be created on the side of the clamping jaws that is averted from the operating side.
  • Another embodiment is characterized in that the recess extends over the entire length of the clamping jaws.
  • the second manipulator or manipulators can be arranged continuously in the longitudinal extension of the bending area or also in areas.
  • an increased free space for the positioning can also be created in this way, in which case a multiple arrangement of manipulators can also be made possible.
  • the at least one recess is arranged in the lower clamping jaw or jaws. Sufficient free space is thus created on the side of the metal sheet to be machined that faces away from the support plane of the support table.
  • no disturbing manipulator parts are arranged here, since an additional support surface for the sheet metal can also be created in the area of the second manipulator.
  • the at least one second manipulator in its position received in the recess, is supported on a base surface of the recess in the vertical direction with respect to the clamping surface.
  • a higher clamping force can also be created with a correspondingly designed thickness in relation to the height of the recess on the opposite clamping surfaces of the clamping jaws.
  • Another embodiment is characterized in that several second manipulators are provided in the direction of the longitudinal extent of the clamping jaw or jaws. As a result of the multiple arrangement of the second manipulators, not only can a better supporting effect be achieved, but also more exact positioning accuracy in the case of wider metal sheets to be processed.
  • a further preferred embodiment is characterized in that the at least one second holding element of the at least one second manipulator is formed by a magnet or a suction element based on negative pressure. In this way, in the area of the support surface formed by the second manipulator, sufficient holding or fixing of the position of the metal sheet to be positioned can also be created during the positioning process and the subsequent removal from the clamping area.
  • the support surface of the at least one second manipulator can be adjusted, in particular pivoted, from a position outside the support plane, in particular below it, to a position of the support surface in the support plane.
  • This makes it possible to pivot the second manipulator or manipulators into the area of the support plane of the support table only if necessary, and thus to still be able to position them within the overlapping area of the clamping surfaces even with sheets that are relatively short in the "X" direction.
  • Another embodiment is characterized in that the at least one second manipulator, when its support surface is in the position in the support plane, is held on the support table so that it can be adjusted relative thereto in the support plane.
  • the support table or its base frame can be parked in a fixed position in front of the bending machine and still have sufficient manipulation options by the second manipulator or manipulators be reached.
  • a further possible embodiment has the characteristics that an end region of the support table facing the clamping jaws can be adjusted with its support surface from a position located in the support plane to a position located outside of the support plane, in particular foldable.
  • a sufficient working space for the second manipulator or manipulators can thus be created in the intermediate region between the support table and the clamping jaws of the clamping tool when they are in the operational or working position.
  • the at least one second manipulator can then be adjusted, in particular pivoted, into the released work area in order to create sufficient support for the sheet metal in this area on the one hand and to be able to carry out exact positioning on the other.
  • a further embodiment provides that the at least one second manipulator is formed by a partial area of the support table in the area of its support plane.
  • Another embodiment is characterized in that at least one support element is arranged or accommodated in the at least one recess when the at least one second manipulator is in a position outside of the recess.
  • a support for the metal sheet can also be created in the area of the at least one recess between the mutually facing clamping jaws with their clamping surfaces formed thereon.
  • a further preferred embodiment is characterized in that the at least one support element ends flat with the clamping surface formed on the clamping jaw and is supported on a base surface of the recess. In this way, a directly opposite clamping area can also be created.
  • the object of the invention is also achieved independently of this by a method for producing workpieces from sheet metal, in particular by forming it in that the sheet metal or the workpiece to be produced is placed by a first manipulator of a manipulation device on a support surface of a support table that defines a support plane, then the sheet metal or the workpiece to be produced is held in position by at least one plate-shaped second manipulator of the manipulation device on its support surface facing the sheet metal or the workpiece to be produced by at least one holding element arranged or formed on or in the support surface, then the sheet metal or the workpiece to be produced is moved further in the direction of a bending area formed by the clamping jaws by means of the at least one second manipulator between clamping surfaces of clamping jaws arranged at a distance from one another, and in that the at least one plate-shaped second manipulator is received at least partially in at least one recess formed in one of the clamping jaws in its clamping surface, the at least one recess deepening in the clamping jaws starting from the clamping
  • the plate-shaped or strip-shaped design of the second manipulator in the direction of the bending area allows a flat structural unit to be created which is only placed on one side of the sheet metal to be processed for the manipulation of the same and over it which can be held positioned in or on the supporting surface of their own second holding elements. It is thus possible, with the clamping jaws open, to bring the sheet metal to be processed or the already pre-bent workpiece between the clamping surfaces, which are still spaced apart from one another, by means of the second manipulator.
  • the at least one second manipulator can be inserted into the recess formed in the respective clamping jaw or protrude into it, as a result of which the metal sheet can be held in the overlapping area with at least one of the clamping surfaces. If the thickness of the second manipulator(s) is selected appropriately in relation to the height of the recess in the vertical direction, the metal sheet in the region of the recess can also be supported by the respective manipulator and, with appropriate dimensional coordination, a clamping effect can also be achieved. Depending on the longitudinal extension of the manipulator or manipulators in the direction of the longitudinal extension of the bending area, a sufficient supporting effect and optionally also a clamping effect can be achieved by the second manipulator protruding at least in regions into the recess.
  • the dimensions of the clamping jaws in the "X" direction can correspond to those of conventional clamping jaws. Since the sheet metal can be held on it by the manipulator with the at least one second holding element, the clamping length in the “X” direction, including a possible small gap distance is that length which corresponds to the narrowest component to be clamped.
  • a procedure is advantageous in which, before the at least one second manipulator is moved into the at least one recess, at least one support element received therein is moved out of it.
  • sufficient support for the metal sheet and optionally also clamping of the metal sheet between the clamping jaws can be created between the facing clamping jaws with their clamping surfaces formed thereon, also in the area of the at least one recess.
  • a production plant 1 is shown in a greatly simplified representation, which in the present case is designed in particular for the swivel bending or vibratory bending of workpieces 2 to be manufactured from sheet metal.
  • a metallic material is usually used as the starting material, which in its non-deformed state can be referred to as a flat material or flat element.
  • the production system 1 used for bending in the present case comprises a bending machine 3, in particular a press or bending press, which is designed to clamp the workpieces 2 or workpieces to be produced from the sheet metal between a clamping tool 4 that can be adjusted relative to one another.
  • the clamping tool 4 comprises at least one, but mostly preferably several lower clamping jaws 5 and at least one, but mostly preferably several upper clamping jaws 6 cooperating therewith be referred to as the upper cheek.
  • the “X” direction is basically the coordinate system that runs in a horizontal plane and in a vertical orientation with respect to the longitudinal extent of the clamping jaws 5, 6. This is therefore the direction which also corresponds to the supply direction or the removal direction.
  • the vertical direction, which thus runs in the height direction of the clamping jaws 5, 6, is understood as the "Y” direction.
  • the “Z” direction is understood to mean that direction which runs in the longitudinal direction or in the longitudinal extension of the clamping jaws 5, 6. In this way, the longitudinal extension of the bending edge, which will be described later, is also aligned to run in the "Z" direction.
  • the at least one upper clamping jaw 6 is arranged above the workpiece 2 to be manufactured on the bending machine 3 and is also held there accordingly, in particular clamped.
  • the at least one lower clamping jaw 5 is also held on the bending machine 3, in particular clamped.
  • a machine frame 7 of the bending machine 3 comprises, for example, side walls 9, 10 which protrude vertically from a base plate 8, are spaced apart from one another and are aligned parallel to one another .
  • the machine frame 7 is usually a solid component of the bending machine 3 that is preferably fixed on a flat hall floor.
  • the shape shown here was selected only as an example for a large number of other possible configurations.
  • the side walls 9, 10 can preferably be approximately C-shaped in order to form a free space for the forming of the workpiece 2, with a fixed lower clamping bar 13, which stands up in particular on the base plate 8, being fastened to the front faces 12 of the legs of the side walls 9, 10 close to the floor is, which can also be referred to as a press beam.
  • This lower clamping bar 13, which is preferably arranged in a stationary manner and is stationary, can also be referred to as a clamping table, on which parts of the bending tool 4 are arranged and also held thereon.
  • the clamping bar guides 15 are mostly designed as linear guides in a wide variety of embodiments.
  • This further clamping bar 16 can also be referred to as a press bar, which is however guided on the machine frame 7 so that it can be displaced relative thereto.
  • clamping jaw receptacles 19, 20 for fitting with the clamping tools 4 can be arranged.
  • the clamping tool or tools 4 can also be held on the clamping jaw receptacles 19, 20 with the interposition of an adapter, not shown in detail.
  • the bending machine 3 shown has, as a drive arrangement 21 for the adjustable upper clamping bar 16, namely the pressure bar, at least one drive means 22 operated with electrical energy, which is line-connected to a control device 24 fed from an energy network 23.
  • a control device 24 fed from an energy network 23.
  • the operation of the bending machine 3 can be controlled via an input terminal 25 that is wired to the control device 24 .
  • the drive means 22 are preferably electric motor-operated spindle drives 26, as are generally known, of which adjusting means 27 for a reversible adjusting movement of the upper clamping bar 16 formed by the pressure bar are drive-connected to it, for example.
  • adjusting means 27 for a reversible adjusting movement of the upper clamping bar 16 formed by the pressure bar are drive-connected to it, for example.
  • other drive means 22 known from the prior art such as cylinder-piston arrangements, stepping motors, rack and pinion drives or the like, can also be used.
  • the two clamping bars 13, 16, in particular their tool holders 19, 20, or the clamping tool 4 held on them with its or its lower and upper clamping jaws 5, 6, when viewed in the longitudinal direction of the clamping bars 13 , 16 define an adjustment plane 28 extending therebetween.
  • the adjustment plane 28 preferably runs centrally with respect to the clamping bars 13, 16 or the clamping jaw receptacles 19, 20 arranged on them.
  • a vertically oriented plane is understood here.
  • the two clamping jaws 5, 6 form a clamping area 29 between them at ends facing one another.
  • Mutually facing lower and upper clamping surfaces 30, 31 of the two clamping jaws 5, 6 are preferably aligned at right angles with respect to the adjustment plane 28. These clamping surfaces 30, 31 serve to keep the sheet metal positioned between the two clamping jaws 5, 6, depending on its wall thickness, for carrying out the bending process.
  • An additional support table 32 with its support surface defining a support plane 33 is preferably arranged in the area of the front side of the bending machine 3 .
  • the support level 33 can also be referred to as a support level. It should be mentioned that the support surface does not have to be formed over the entire area but can also be formed from several partial support surfaces arranged next to one another and/or one behind the other in the feed direction of the metal sheet to be processed.
  • the bearing surface defined by the bearing plane 33 is preferably arranged in the same plane as the lower clamping surface 30 of the lower clamping jaw 5. This serves as additional support for large-area sheets in order to avoid unintentional buckling, especially with thinner sheets.
  • a bending area 34 is understood to mean that area which is used to form the workpiece 2 to be produced from the mostly planar, still undeformed sheet metal or to further process an already pre-deformed workpiece 2 by forming at least one additional fold.
  • the bending area 34 is mostly at a distance from the adjustment plane 28 of the clamping bars 13, 16 and is formed by end sections of at least one, but preferably both, clamping jaws 5, 6 facing one another.
  • the bending area 34 is arranged on the side of the clamping beams 13, 16 that faces away from the support table 32 or an operator, who is not shown in detail. The bending area 34 is thus arranged to run within the machine frame 7 .
  • the bending area 34 mostly forms a preferably rectilinear bending line on the workpiece 2 to be produced, with legs being formed on both sides of the bending area 34 as a result of the bending process carried out.
  • One of the legs of the workpiece 2 is held in the clamping position between the two clamping surfaces 30, 31 of the clamping jaws 5, 6, with the at least one other leg being arranged outside of the clamping surfaces 30, 31.
  • the two legs enclose a bending angle between them. This bend angle is measured in a reference plane perpendicular to the bend line.
  • the reference plane for its part is further preferably also aligned to run in the perpendicular direction with respect to the adjustment plane 28 .
  • the machine frame 7 of the bending machine 3 is only shown in a very simplified manner, although it is also possible to use embodiments that deviate from it.
  • the machine frame 7 or the machine body could be designed with a free stand passage.
  • the clamping jaw receptacles 19, 20 could be accommodated between the side walls 9, 10 or side parts.
  • no free stand passage is possible, as a result of which the clamping jaw receptacles 19, 20 are not accommodated between the side walls 9, 10 or side parts can become.
  • the bending machine 3 of the production plant 1 also includes a bending unit 35, which can also be referred to as a bending unit or forming unit. This is simplified in the 2 indicated and can be adjusted relative to the machine frame 7 depending on the bending process to be carried out. For the sake of clarity, in the 1 omitted on the representation of the bending unit 35 and its components.
  • the sheet metal pre-positioned and clamped between the two clamping jaws 5, 6 to form the workpiece 2 can be formed, in particular folded, by a bending process, in particular a folding process, along the bending line forming the bending region 34.
  • either the lower clamping jaw 5 or the upper clamping jaw 6 forms the bending region and thus the bending region 34.
  • the lower clamping jaw 5 thus forms or has a first forming edge.
  • the upper clamping jaw 6 forms or has a second forming edge.
  • the two clamping surfaces 30, 31 of the clamping jaws 5, 6 described above define a workpiece support plane 36 for the workpiece 2 to be produced when they are in abutting positions.
  • the workpiece support plane 36 is preferably arranged at the same height as the support plane 33 defined by the support table 32 when viewed in the vertical direction .
  • the two planes are aligned to run plane-parallel to one another and are arranged in a common plane.
  • the bending unit 35 can have one or more bending tools 37 which can be arranged on a bending beam 38 .
  • the bending beam 38 can be adjustable relative to the machine frame 7 on bending beam guides (not shown) by means of a bending beam drive.
  • At least one recess 39 is arranged only in the lower clamping surface 30, starting from this recessed in the "Y" direction. Furthermore, the at least one recess 39 extends in the “X” direction in the clamping jaws 5 towards the bending area 34 starting from a front surface 40 of the lower clamping jaw 5 arranged at a distance from the adjustment plane 28 . Furthermore, in this exemplary embodiment, the front surface 40 is arranged on the side of the clamping jaw or jaws 5, 6 facing away from the bending region 34 and thus faces the operating side. At least one support element 41 that can be adjusted in the "Z" direction along the recess 39 can be arranged or accommodated in this recess 39 . However, it would also be possible to pivot the at least one support element 41 out of the recess 39 .
  • one of the support elements 41 is indicated in simplified form on both sides of the lower clamping jaws 5 .
  • the support element or elements 41 end here in each case on their upper sides facing the upper clamping jaws 6 in the lower clamping surface 30 defined by the lower clamping jaws 5 and are thus arranged or formed level with this.
  • the support element or elements 41 can be adjusted or relocated out of the recess 39 as required. The adjustment preferably takes place in the direction of the longitudinal extent of the clamping bars 13, 16 in order to be able to release at least a partial section of the recess 39.
  • the support element or elements 41 are used to ensure that the two clamping jaws 5, 6 facing each other can be supported with their clamping surfaces 30, 31 almost over their entire surface, possibly with the sheet metal or the workpiece 2 to be produced being interposed, without excessively high bending forces being generated during the bending process the jaws 5, 6 are introduced through this exemption.
  • the support element 41 or the support elements 41 fill the recess 39 at least for the most part in their working position and can also be supported on the base surface of the recess 39 in the vertical direction with respect to the clamping surfaces 30, 31.
  • the production system 1 also includes a manipulation device 42 with at least one first manipulator 43, indicated in simplified form, for the usual manipulation of the sheet metal or the workpiece 2 to be produced in the front or operating area of the bending machine 3.
  • the manipulation of the sheet metal or the workpiece 2 to be produced from it takes place in the area of the support table 32 preferably by the first manipulator 43, of which only a first holding element 44 is shown on a part of a manipulator arm.
  • the first holding element 44 or the first holding elements 44 can be embodied, for example, as a suction element and/or as a magnet, with which the sheet metal is held on the side facing away from the support plane 33 of the support table 32 and subsequently moved relative to the clamping tool 4 and with respect to of the bending area 34 can be positioned.
  • the first holding element 44 it would also be possible to design the first holding element 44 as a gripper with interacting gripping fingers.
  • one manipulation device 42 also includes at least one second manipulator 45 .
  • the second manipulator 45 is shown on the one hand in full lines below the sheet metal or the workpiece 2 to be produced in a position before it is inserted into the previously described recess 39 in the lower clamping jaw or jaws 5 and on the other hand in a rest position outside of it in dashed lines .
  • the at least one second manipulator 45 is preferably plate-shaped and has a width in the direction of the bending area - ie in the "Z" direction - which corresponds to at least a partial section of the longitudinal extent of the clamping jaws 5, 6 and thus also forms a sufficiently large dimensioned contact surface.
  • the extent of the depth in the "X" direction is also chosen to such an extent that a correspondingly dimensioned support surface can also be created here.
  • the adjustment movement of the at least one second manipulator 45 from the non-engaged rest position to the manipulation position located directly below the sheet metal or the workpiece 2 to be produced and vice versa can take place in a wide variety of ways. This can be done, for example, by a pivoting process, by means of which the at least one second manipulator 45 is adjusted between the two positions described above. However, it would also be possible for other adjusting mechanisms to be used for this purpose.
  • the second manipulator 45 can be in drive connection with one or more actuators, which are not shown in detail.
  • different linear movements could also be combined to form a corresponding sequence of movements in order to carry out the displacement of the second manipulator or manipulators 45 .
  • other kinematic actuating mechanisms could also be used. These include e.g.
  • the above-described recess 39 can be seen, which, starting from the clamping surface 30 or 31, extends over a height 46 in the vertical direction relative to the clamping surface 30 or 31 and is recessed into the clamping jaws 5 or 6.
  • the recess 39 extends further in the direction or longitudinal direction of the bending region 34.
  • a possible folded, pivoted away or adjusted position of the at least one second manipulator 45 is indicated in dashed lines. This adjustment movement allows the at least one second manipulator 45 to be brought into a lateral position, for example, in which the plate-shaped body is aligned in the vertical direction with respect to the bending region 34 and is thus arranged parallel with respect to the feed direction.
  • FIG 3 An alternative setting or position in which the second manipulator 45 is also outside of its working position or manipulation position is also in dotted lines. In this further position, the longitudinal extension of the at least one second manipulator 45 runs approximately parallel with respect to the bending region 34 and thus in the "Z" direction.
  • the at least one recess 39 is arranged starting from a front surface 40 of the clamping jaw 5 or 6 that faces away from the bending region 34 of the clamping jaw 5 or 6 .
  • the recess 39 thus extends, starting from the front surface 40, in the direction of the bending area 34.
  • the longitudinal extent of the recess 39 should be selected in such a way that it is at least a length of the at least one second manipulator 45 in the direction of the bending area 34 plus an adjustment and / or positioning of the second manipulator 45 corresponds in the same direction.
  • the recess 39 can preferably also extend over the entire length of the clamping jaw or jaws 5 or 6, as is shown in FIG 2 is indicated in a simplified way.
  • the previously described support element 41 or the support elements 41 must be moved at least partially out of the recess 39 . This is also simplified in the 2 implied.
  • the sheet metal or the workpiece 2 can now be brought into the area of the at least one second manipulator 45 by means of the at least one first manipulator 43.
  • the second manipulator 45 which is designed in the form of a plate or a flat profile, has a support surface 47 on its side facing the metal sheet or the workpiece 2 to be produced.
  • At least one second holding element 48 is arranged or formed on or in the support surface 47 .
  • the one or more second holding elements 48 are used to hold the sheet metal or the workpiece to be produced in a stationary position during the transfer from the first manipulator 43 to the second manipulator 45 .
  • the at least one second holding element 48 of the at least one second manipulator 45 can be formed by a magnet or a vacuum-based suction element or the like, depending on the material of the workpiece 2 or sheet metal.
  • the metal sheet or the workpiece 2 to be produced is now held on the second plate-shaped second manipulator 45 and transferred to it, the metal sheet or the workpiece 2 to be produced from it can be clamped between the clamping surfaces 30, 31, which are arranged at a distance from one another, and thus between the both jaws 5, 6 are adjusted further inside.
  • the at least one recess 39 is provided between the clamping jaws 5, 6 to accommodate the same.
  • the second manipulator 45 embodied in the form of a plate or flat profile has a thickness 49 in the vertical direction with respect to the clamping surface 30 or 31 which corresponds at most to the height 46 of the recess 39 .
  • the thickness 49 of the second manipulator(s) 45 preferably corresponds almost exactly to the height 46 of the recess 39. If the at least one second manipulator 45 is in its position, at least partially accommodated in the recess 39, it can be attached to a base surface of the recess 39 in be supported perpendicular direction with respect to the clamping surface 30 or 31 thereon.
  • the at least one recess 39 is only arranged in the lower clamping jaw or jaws 5 . Irrespective of this, however, it would also be possible to provide the arrangement of the recess 39 only in the upper clamping jaw 6 or the upper clamping jaws 6 . However, the recess 39 is usually formed exclusively in the lower clamping jaw or jaws 5 .
  • an end region of the support table 32 facing the clamping jaws 5, 6 can be adjusted with its support surface from a position in the support plane 33 to a position outside of the support plane 33. This can be done, for example, by folding it down or swiveling it away using actuating means or actuators that are not shown in detail.
  • the at least one second manipulator 45 If the at least one second manipulator 45 is not in use, its support surface 47 is outside of the support plane 33 of the support table 32, as is shown in FIG 3 is indicated in dashed lines. This is usually a folded-down position of the second manipulator 45.
  • the at least one second manipulator 45 can also be arranged laterally with respect to the end region of the support table 32 facing the clamping jaws 5, 6, which or which can also be designed to be pivotable or foldable.
  • the at least one second manipulator 45 can be moved. Since the at least one second manipulator 45 is usually located with its support surface 47 in a position below and thus outside of support plane 33, it can be adjusted for use with its support surface 47 into a position of support surface 47 that is in support plane 33, in particular be pivoted. If the at least one second manipulator 45 is now located with its support surface 47 in the support plane 33, it can be adjusted relative to the support table 32 on the latter in the support plane 33. For this purpose, the at least one second manipulator 45 can be held adjustably on the support table 32, in particular a frame of the same, and can be adjusted by means of adjusting means that are not shown in detail.
  • the at least one second manipulator 45 is formed by a partial area of the support table 32 in the area of its support plane 33 .
  • at least a partial area of the support table 32 is to be designed to be adjustable in the support plane 33 relative to the bending machine 3 independently of the rest of the support table 32 by means of further adjusting means.
  • first holding element 44 of the first manipulator 43 is present in the region of the upper side of the metal sheet or workpiece 2 .
  • the gap between the upper clamping jaw 6 and the leg protruding from the workpiece 2 is relatively narrow, so that handling with gripping tongs or another manipulator gripping the sheet metal on both sides is no longer possible.
  • the second manipulator 45 in its plate-shaped or strip-shaped design and the recess 39 formed or arranged here in the lower clamping jaw 5, the sheet metal or the workpiece 2 can nevertheless be held and also manipulated by it on its underside facing the workpiece support plane 36.
  • the clamping length between the clamping jaws 5, 6 in the "X" direction remains almost unchanged, since the second manipulator 45 in its position inserted into the recess 39 and with correspondingly coordinated dimensions (height 46 of the recess 39 and thickness 49 of the second manipulator 45 ) Also in the area of the recess 39 clamping of the sheet metal or the workpiece 2 between the clamping jaws 5, 6 is possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Claims (13)

  1. Installation de fabrication (1) pour la fabrication de pièces (2) en tôle, plus particulièrement par formage, comprenant
    une machine de pliage (3) avec un châssis de machine fixe (7), une barre de serrage inférieure (13) avec au moins une mâchoire de serrage inférieure (5) qui y est maintenue, ainsi qu'une barre de serrage supérieure (16) avec au moins une mâchoire de serrage supérieure (6) qui y est maintenue, une des barres de serrage (13, 16) pouvant être déplacée par rapport au châssis de machine (7) afin de maintenir la pièce à fabriquer (2) serrée entre les deux mâchoires de serrage (5, 6) et l'au moins une mâchoire de serrage inférieure (5) comprenant, au niveau de son extrémité orientée vers la mâchoire de serrage supérieure (6), une surface de serrage inférieure (30) et l'au moins une mâchoire de serrage supérieure (6) comprenant, au niveau de son extrémité orientée vers la mâchoire de serrage inférieure (5), une surface de serrage supérieure (31), les deux surfaces de serrage (30, 31) définissant, lorsqu'elles sont appuyées l'une contre l'autre, un plan de support de pièce (36) pour la pièce à fabriquer (2), ainsi qu'avec une unité de pliage (35),
    une table de support (32) qui définit, avec sa surface de support, un plan de support (33) pour la tôle ou la pièce à fabriquer (2),
    un dispositif de manipulation (42) avec au moins un premier manipulateur (43) avec au moins un premier élément de maintien (44) pour la manipulation de la tôle ou de la pièce à fabriquer (2),
    caractérisée en ce que
    le dispositif de manipulation (42) comprend en outre au moins un deuxième manipulateur (45) en forme de plaque, ce deuxième manipulateur (45) formant, au niveau de son côté pouvant être orienté vers la tôle ou la pièce à fabriquer (2), une surface d'appui (47) et dans ou sur cette surface d'appui (47), est disposé ou réalisé au moins un deuxième élément de maintien (48),
    et en ce que, dans une des mâchoires de serrage (5, 6), dans sa surface de serrage (30, 31), est disposé au moins un évidement (39), cet évidement (39) étant réalisé de façon à s'étendre, à partir de la surface de serrage (30, 31), sur une hauteur (46) dans la direction perpendiculaire à la surface de serrage (30, 31), profondément vers les mâchoires de serrage (5, 6) ainsi qu'en direction d'une zone de pliage (34),
    et en ce que le deuxième manipulateur (45) en forme de plaque présente une épaisseur (49) dans la direction perpendiculaire à la surface de serrage (30, 31) qui correspond au maximum à la hauteur (46) de l'évidement (39) et, pour la manipulation de la tôle à usiner ou de la pièce à fabriquer (2), est logé au moins partiellement dans l'au moins un évidement (39),
    et en ce que l'au moins un évidement (39) est disposé dans le ou les mâchoires de serrage inférieures (5), l'au moins un deuxième manipulateur (45) étant appuyé contre celui-ci, dans sa position logée dans l'évidement (39), au niveau d'une surface de base de l'évidement (39) dans la direction perpendiculaire à la surface de serrage (30, 31).
  2. Installation de fabrication (1) selon la revendication 1, caractérisée en ce que l'au moins un évidement (39) s'étend, à partir d'une surface frontale (40) de la mâchoire de serrage (5, 6), opposée à une zone de pliage (34) des mâchoires de serrage (5, 6), à l'intérieur de celles-ci.
  3. Installation de fabrication (1) selon la revendication 1 ou 2, caractérisée en ce que l'évidement (39) s'étend sur toute l'extension longitudinale des mâchoires de serrage (5, 6).
  4. Installation de fabrication (1) selon l'une des revendications précédentes, caractérisée en ce que, dans la direction de l'extension longitudinale de la ou des mâchoires de serrage (5, 6), sont prévus plusieurs deuxièmes manipulateurs (45).
  5. Installation de fabrication (1) selon l'une des revendications précédentes, caractérisée en ce que l'au moins un deuxième élément de maintien (48) de l'au moins un deuxième manipulateur (45) est constitué d'un aimant ou d'un élément d'aspiration basé sur une dépression.
  6. Installation de fabrication (1) selon l'une des revendications précédentes, caractérisée en ce que l'au moins un deuxième manipulateur (45) peut être déplacé, plus particulièrement pivoté, avec sa surface d'appui (47), d'une position se trouvant hors du plan de support (33), plus particulièrement en dessous de celui-ci, vers une position de la surface d'appui (47) se trouvant dans le plan de support (33).
  7. Installation de fabrication (1) selon l'une des revendications précédentes, caractérisée en ce que l'au moins un deuxième manipulateur (45), lorsque sa surface d'appui (47) est dans une position se trouvant dans le plan de support (33) sur la table de support (32), est maintenu de manière mobile par rapport à celle-ci dans le plan de support (33).
  8. Installation de fabrication (1) selon l'une des revendications précédentes, caractérisée en ce qu'une partie d'extrémité de la table de support (32), orientée vers les mâchoires de serrage (5, 6), est conçue de manière mobile, plus particulièrement de façon à pouvoir être rabattue, avec sa surface de support, d'une position se trouvant dans le plan de support (33) vers une position se trouvant à l'extérieur du plan de support (33).
  9. Installation de fabrication (1) selon l'une des revendications précédentes, caractérisée en ce que l'au moins un deuxième manipulateur (45) est constitué d'une partie de la table de support (32) au niveau de son plan de support (33).
  10. Installation de fabrication (1) selon l'une des revendications précédentes, caractérisée en ce que, dans l'au moins un évidement (39), lorsque le deuxième manipulateur (45) se trouve dans une position à l'extérieur de l'évidement (39), est disposé ou est logé au moins un élément de soutien (41).
  11. Installation de fabrication (1) selon la revendication 10, caractérisée en ce que l'au moins un élément de soutien (41) se termine par une surface plane avec la surface de serrage (30, 31) réalisée sur la mâchoire de serrage (5, 6) et est appuyé contre une surface de base de l'évidement (39).
  12. Procédé de fabrication de pièces (2) en tôle, plus particulièrement par formage, dans lequel
    la tôle ou la pièce à fabriquer (2) est posée par un premier manipulateur (43) d'un dispositif de manipulation (42) sur une surface de support d'une table de support (32) définissant un plan de support (33), caractérisé en ce que
    la tôle ou la pièce à fabriquer (2) est ensuite maintenue positionnée par au moins un deuxième manipulateur (45) en forme de plaque du dispositif de manipulation (42) contre sa surface d'appui (47) orientée vers la tôle ou la pièce à fabriquer (2) par au moins un élément de maintien (48) disposé ou réalisé sur ou dans la surface d'appui (47),
    puis la tôle ou la pièce à fabriquer (2) est déplacée, au moyen de l'au moins un deuxième manipulateur (45), entre des surfaces de serrage (30, 31), écartées entre elles, de mâchoires de serrage (5, 6), en direction d'une zone de pliage (34) formée par les mâchoires de serrage (5, 6),
    et en ce que l'au moins un deuxième manipulateur (45) en forme de plaque est logé au moins partiellement dans au moins un évidement réalisé dans une des mâchoires de serrage (5, 6) dans sa surface de serrage (30, 31), l'au moins un évidement (39) étant conçu de façon à s'étendre à partir de la surface de serrage (30, 31) sur une hauteur (46) dans la direction perpendiculaire à la surface de serrage (30, 31) profondément dans les mâchoires de serrage (5, 6) ainsi qu'en direction de la zone de pliage (34),
    et en ce que le deuxième manipulateur (45) en forme de plaque est réalisé avec une épaisseur (49) dans la direction perpendiculaire à la surface de serrage (30, 31), qui correspond au maximum à la hauteur (46) de l'évidement (39),
    et en ce que l'au moins un évidement (39) est disposé dans le ou les mâchoires de serrage inférieures (5), l'au moins un deuxième manipulateur (45) étant appuyé contre celui-ci, dans sa position logée dans l'évidement (39), au niveau d'une surface de base de l'évidement (39) dans la direction perpendiculaire à la surface de serrage (30, 31).
  13. Procédé selon la revendication 12, caractérisé en ce que, avant le déplacement de l'au moins un deuxième manipulateur (45) vers l'intérieur de l'au moins un évidement (39), un élément de soutien (41) logé à l'intérieur de celui-ci est déplacé hors de celui-ci.
EP16735977.7A 2015-06-02 2016-06-02 Installation de fabrication pour la fabrication de pièces en tôle et procédé à cet effet Active EP3302840B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50449/2015A AT517227B1 (de) 2015-06-02 2015-06-02 Fertigungsanlage zur Fertigung von Werkstücken aus Blech sowie Verfahren dazu
PCT/AT2016/050172 WO2016191786A1 (fr) 2015-06-02 2016-06-02 Installation de fabrication pour la fabrication de pièces en tôle et procédé à cet effet

Publications (3)

Publication Number Publication Date
EP3302840A1 EP3302840A1 (fr) 2018-04-11
EP3302840B1 EP3302840B1 (fr) 2019-02-20
EP3302840B2 true EP3302840B2 (fr) 2022-03-02

Family

ID=56368734

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EP16735977.7A Active EP3302840B2 (fr) 2015-06-02 2016-06-02 Installation de fabrication pour la fabrication de pièces en tôle et procédé à cet effet

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EP (1) EP3302840B2 (fr)
AT (1) AT517227B1 (fr)
DE (1) DE202016009044U1 (fr)
WO (1) WO2016191786A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107626789A (zh) * 2017-09-12 2018-01-26 广东金南方新科技股份有限公司 自动折边机及其折边方法
CN107984032A (zh) * 2018-01-04 2018-05-04 高振虹 一种航空用铝合金材料切割设备
CN110560521A (zh) * 2019-09-20 2019-12-13 洛阳市优能自动化设备有限公司 一种自动折弯机

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5138865A (en) 1991-04-23 1992-08-18 Antonio Codatto Gripping assembly for a manipulator for plate sheets
DE19621658C2 (de) 1996-05-30 1999-11-04 Eht Werkzeugmaschinen Gmbh Bearbeitungsmaschine für plattenförmige Werkstücke, insbesondere zur Erzeugung von gebogenen Rändern an Blechteilen
JP4596497B2 (ja) 1999-07-19 2010-12-08 株式会社アマダ 曲げ加工装置
DE102004048036A1 (de) * 2004-09-28 2006-04-06 Ras Reinhardt Maschinenbau Gmbh Biegeeinrichtung
ITUD20070052A1 (it) 2007-03-07 2008-09-08 Antonio Codatto Impianto per la piegatura di elementi metallici piani, quali pannelli, lamiere, piastre o simili, macchina piegatrice per tali elementi metallici piani e relativo procedimento di piegatura
ITVI20110331A1 (it) 2011-12-22 2013-06-23 Codatto Internat S P A Macchina industriale per la piegatura di elementi metallici piani

Also Published As

Publication number Publication date
AT517227B1 (de) 2016-12-15
EP3302840B1 (fr) 2019-02-20
EP3302840A1 (fr) 2018-04-11
WO2016191786A1 (fr) 2016-12-08
DE202016009044U1 (de) 2021-09-02
AT517227A4 (de) 2016-12-15

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