EP3515617B1 - Outil et machine-outil ainsi que procédé d'usinage de pièces en forme de plaque - Google Patents

Outil et machine-outil ainsi que procédé d'usinage de pièces en forme de plaque Download PDF

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Publication number
EP3515617B1
EP3515617B1 EP17783414.0A EP17783414A EP3515617B1 EP 3515617 B1 EP3515617 B1 EP 3515617B1 EP 17783414 A EP17783414 A EP 17783414A EP 3515617 B1 EP3515617 B1 EP 3515617B1
Authority
EP
European Patent Office
Prior art keywords
tool
processing
workpiece
axis
along
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.)
Active
Application number
EP17783414.0A
Other languages
German (de)
English (en)
Other versions
EP3515617A1 (fr
Inventor
Jens Kappes
Markus Wilhelm
Rainer Hank
Marc Klinkhammer
Leonard Schindewolf
Simon OCKENFUSS
Dennis Tränklein
Alexander Tatarczyk
Jörg Neupert
Dominik BITTO
Markus MAATZ
Christian JAKISCH
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 Werkzeugmaschinen SE and Co KG
Original Assignee
Trumpf Werkzeugmaschinen SE and Co KG
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
Priority claimed from DE102016118175.7A external-priority patent/DE102016118175B4/de
Priority claimed from DE102016120035.2A external-priority patent/DE102016120035B3/de
Application filed by Trumpf Werkzeugmaschinen SE and Co KG filed Critical Trumpf Werkzeugmaschinen SE and Co KG
Priority to PL17783414T priority Critical patent/PL3515617T3/pl
Publication of EP3515617A1 publication Critical patent/EP3515617A1/fr
Application granted granted Critical
Publication of EP3515617B1 publication Critical patent/EP3515617B1/fr
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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
    • B21D17/00—Forming single grooves in sheet metal or tubular or hollow articles
    • B21D17/04—Forming single grooves in sheet metal or tubular or hollow articles by rolling
    • 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
    • B21D19/00—Flanging or other edge treatment, e.g. of tubes
    • B21D19/02—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge
    • B21D19/04—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge shaped as rollers
    • B21D19/043—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge shaped as rollers for flanging edges of plates
    • 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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/12—Punching using rotatable carriers
    • 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
    • B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
    • B21D35/001—Shaping combined with punching, e.g. stamping and perforating

Definitions

  • the invention relates to a tool and a machine tool as well as a method for machining plate-shaped workpieces, preferably sheet metal.
  • Such a machine tool is from EP 2 527 058 B1 known.
  • This document discloses a machine tool in the form of a press for processing workpieces, an upper tool being provided on a lifting device which can be moved along a lifting axis in the direction of the workpiece and in the opposite direction relative to a workpiece to be processed.
  • a lower tool is provided, which is positioned on an underside.
  • a lifting drive device for a lifting movement of the upper tool is controlled by a wedge gear.
  • the lifting drive device with the upper tool arranged on it can be moved along a positioning axis.
  • the lower tool is moved synchronously with the upper tool.
  • a tool for reshaping workpieces which comprises an upper tool on which a roller is provided which is rotatable about an axis of rotation perpendicular to the position axis of the upper tool.
  • this roller has a conical forming surface.
  • a counter-roller is provided on the lower tool within the support surface on the base body of the lower tool. This counter roller can be rotated about an axis of rotation perpendicular to the position axis of the lower tool. The axis of rotation of the roller on the upper tool is therefore aligned parallel to that of the lower tool.
  • the upper tool and lower tool are moved towards one another in the stroke direction until the workpiece to be machined is clamped between the roller of the upper tool and the counter roller of the lower tool. They work in the clamped state Forming surface of the roller and the opposite surface of the counter roller in the stroke direction together.
  • a deformation in particular a shoulder, is created on the workpiece in a continuous manner.
  • the upper tool and lower tool are arranged stationary in the machine tool.
  • a tool for reshaping workpieces which comprises an upper tool on which a roller with a groove-shaped recess is provided. This roller can be rotated about an axis of rotation perpendicular to the positioning axis of the upper tool.
  • a counter roller is provided on the lower tool within the support surface on the base body of the lower tool. This counter roller is rotatably received about an axis of rotation perpendicular to the positioning axis of the lower tool.
  • the upper tool and lower tool are moved towards one another in the stroke direction until the workpiece to be machined is clamped between the roller of the upper tool and the counter roller of the lower tool.
  • the deformation is introduced by moving the workpiece in a horizontal plane between the upper tool and the lower tool.
  • An analog tool goes out EP 0 757 926 B1 emerged.
  • a tool with an aforementioned structure from FIG US 8,042,369 B2 known.
  • a cutting tool in a punch press in which the cutting tool is freely rotatable about a stroke axis oriented perpendicular to the workpiece plane of the workpiece to be machined.
  • the rotating cutting knife on the upper tool interacts with a counter-cutting tool that is fixedly arranged on the lower tool.
  • the upper tool can be rotated synchronously with the lower tool to introduce a cutting movement, the two lifting axes being aligned congruently to one another.
  • the invention is based on the object of proposing a tool and a machine tool as well as a method for machining plate-shaped workpieces, by means of which the flexibility in the machining of workpieces is increased.
  • a tool for machining plate-shaped workpieces in particular sheet metal, which has an upper tool consisting of a clamping pin and a base body which lie in a common position axis and a machining tool arranged opposite the clamping shaft and on the base body has at least one machining edge, as well as a lower tool, which comprises a base body with a support surface for the workpiece and with at least one opposing edge provided on the base body and a position axis located in the base body, which is oriented perpendicular to the support surface.
  • the upper tool and lower tool can be moved towards one another in a lifting movement for machining a workpiece arranged between them.
  • a machining plane is formed between the upper tool and the lower tool.
  • the at least one machining edge of the machining tool on the upper tool extends at least partially along a hold-down surface.
  • the counter tool body is designed as a counter roller.
  • the at least one mating edge of the mating tool lies opposite the at least one machining edge of the machining tool.
  • Adjacent to the at least one mating edge a machining device of the mating tool body is provided, which has at least one curved mating surface aligned in the longitudinal direction of the machining edge of the machining tool.
  • This tool creates a machining tool in which machining of the workpiece is made possible by a pendulum stroke. During the pendulum stroke, the upper and / or lower tool is moved in succession along the machining plane, that is to say alternately with one another.
  • the machining edge of the machining tool and the opposite edge of the counter-tool body act on the workpiece in order to keep it clamped.
  • the curved mating surface of the machining device on the mating tool body which protrudes from the machining edge on the machining tool, results in machining of the workpiece, such as cutting, punching, embossing and / or forming.
  • the counter-tool body which is designed as a counter-roller, can reduce friction between the lower tool and the workpiece to be machined during the pendulum stroke.
  • the at least one machining edge of the machining tool on the upper tool extends along the entire base body of the upper tool. This enables a maximum length of a working stroke or pendulum stroke for introducing a machining contour into the workpiece.
  • the machining edge is aligned perpendicular to the position axis.
  • simple force relationships can be given and, in addition, increased deformation forces can be achieved.
  • the machining tool crosses the position axis, thereby even better conditions can be achieved during the machining process.
  • a preferred embodiment of the machining tool provides that a machining surface is provided adjacent to the machining edge, which is preferably formed in a recess in the base body. In this way, for example, a machining contour can be limited in depth relative to the workpiece plane.
  • the recess in the base body is advantageously delimited by two machining edges of the machining tool that are spaced apart from one another. In this way, for example, a width of the contour that is introduced into the workpiece is limited.
  • the counter-tool body designed as a counter-roller is preferably around an axis of rotation, in particular aligned perpendicular to the position axis of the lower tool.
  • the counter edge is provided circumferentially on the counter roller. Adjacent to the opposite edge, a support surface can be provided on the counter roller, which is aligned with the hold-down surface on the base body of the upper tool. This enables a clamping position of the workpiece to be maintained during the relative movement of the upper tool and / or lower tool for machining the workpiece, with a friction minimization being made possible in particular when the lower tool moves relative to the upper tool.
  • a processing surface of the processing device advantageously adjoins the opposing edge of the opposing roller.
  • This machining surface is opposite the support surface of the counter roller.
  • This processing surface can be designed in the form depending on the punching, cutting, embossing and / or forming process to be carried out.
  • the counter-roller designed as a counter-tool body has two mutually spaced-apart counter-edges, the spacing of which lies opposite the parallel-spaced processing edges of the processing tool and in the plane of the support of the lower tool and a counter-surface of the processing device extends between the counter-edges of the counter-roller, which is raised in the direction of the upper tool.
  • the processing device of the counter roller preferably engages in the recess on the base body.
  • the counter surface of the machining device on the counter roller is provided as a forming surface.
  • a bead can be introduced.
  • the contour of the bead is a function of the cross-sectional geometry of the machining device and / or the course of the depression which adjoins at least one machining edge or runs between the two machining edges that are parallel to one another.
  • the mating surface on the mating roller can have at least one cutting edge. In this case, the machining edge on the upper tool and the opposite edge on the counter roller can hold the workpiece in a defined position, the cutting edge dipping into the recess on the upper tool and making a cut in the workpiece.
  • the opposing surface of the machining device has a forming surface and a cutting edge. In this way, for example, gills can be introduced into the workpiece.
  • Another alternative embodiment of the opposing surface of the machining device provides that it has two cutting edges which are aligned with the machining edges on the upper tool. This allows a strip of material to be cut out of the workpiece.
  • machining tool on the upper tool provides that the machining surface of the machining tool is designed as a support roller in the depression. In this way, additional friction minimization can be achieved during the machining process for introducing a contour into the workpiece.
  • the object on which the invention is based is also achieved by a machine tool for machining plate-shaped workpieces, in which a tool according to one of the embodiments described above is used and the movement of the upper tool along the upper positioning axis and the movement of the lower tool the lower positioning axis can be controlled independently of one another.
  • a pendulum stroke for introducing a machining contour into the workpiece can be controlled and carried out.
  • the machining contour can be a contour introduced by a punching, cutting, embossing and / or reshaping process.
  • the object on which the invention is based is achieved by a method for processing plate-shaped workpieces, in particular sheet metal, in which a tool according to one of the above-described embodiment is used and the upper tool and the lower tool are controlled with a stroke movement for machining the workpiece, so that the Workpiece is held clamped between the upper tool and the lower tool and, for machining the workpiece, the upper tool and the lower tool are rotated individually or together relative to the position axis of the upper and lower tool or the upper tool and the lower tool move individually or together relative to one another along the positioning axis or the upper tool and the lower tool are rotated individually or jointly relative to one another about the position axis and moved individually or jointly to one another along the positioning axis.
  • This machining of the workpiece has the advantage that the workpiece can be kept stationary during the machining.
  • the machining of the workpiece such as a punching, cutting, embossing and / or forming process, is carried out by a movement of the upper tool and / or the lower tool and / or a rotary movement of the upper and / or the lower tool relative to one another.
  • a preferred embodiment of the method for processing plate-shaped workpieces provides that, for processing the workpiece, after a lifting movement of the upper tool and / or the lower tool in order to keep the workpiece clamped in between, a first movement of the lower tool relative to the upper tool is triggered along the lower positioning axis so that the counter tool body is moved with respect to the machining tool along the lower positioning axis and then a movement of the upper tool along the upper positioning axis is controlled while the lower tool is held stationary.
  • This enables machining to take place on the workpiece during the first-mentioned movement of the lower tool, the workpiece being positioned stationary or stationary relative to the upper tool. There is no relative movement between the workpiece and the upper tool.
  • the contour is introduced into the workpiece due to the movement of the lower tool.
  • the lower tool is again held stationary, the upper tool being moved in order to be positioned again in a starting position relative to the lower tool in order to carry out a subsequent working stroke or pendulum stroke.
  • this starting position for example, the position axes of the upper and lower tools can be aligned.
  • the movement of the upper tool and the lower tool relative to one another along the upper and lower positioning axes are controlled with a maximum working stroke, during which the workpiece is held clamped by the machining edge of the machining tool on the upper tool and the counter surface of the machining device on the lower body .
  • a further preferred embodiment of the method provides that during the machining of the workpiece, in particular during the movement of the lower tool with respect to the stationary upper tool, a distance between the hold-down surface of the upper tool and the Support surface of the lower tool is kept constant. As a result, constant conditions can be created while the workpiece is being machined.
  • FIG. 1 a machine tool 1 is shown, which is designed as a punch press.
  • This machine tool 1 includes a support structure with a closed machine frame 2. This includes two horizontal frame legs 3, 4 and two vertical frame legs 5 and 6.
  • the machine frame 2 encloses a frame interior 7 that defines the working area of the machine tool 1 with an upper tool 11 and a lower tool 9 forms.
  • the machine tool 1 is used to machine plate-shaped workpieces 10, which for the sake of simplicity are shown in FIG Figure 1 are not shown and can be arranged in the frame interior 7 for processing purposes.
  • a workpiece 10 to be machined is placed on a workpiece support 8 provided in the frame interior 7.
  • the lower tool 9 is mounted on the lower horizontal frame leg 4 of the machine frame 2, for example in the form of a punching die.
  • This punching die can be provided with a die opening.
  • the upper tool 11 embodied as a punch, dips into the die opening of the lower tool embodied as a punching die.
  • the upper tool 11 and lower tool 9 can also be used as a bending punch and a bending matrix for reshaping workpieces 10 instead of a punch and a punching die.
  • the upper tool 11 is fixed in a tool holder at a lower end of a ram 12.
  • the ram 12 is part of a lifting drive device 13, by means of which the upper tool 11 can be moved in a lifting direction along a lifting axis 14.
  • the stroke axis 14 runs in the direction of the Z axis of the coordinate system in FIG Figure 1 indicated numerical control 15 of the machine tool 1.
  • the lifting drive device 13 can be perpendicular to the lifting axis 14 along a positioning axis 16 in the direction of the Be moved with the double arrow.
  • the positioning axis 16 runs in the direction of the Y-direction of the coordinate system of the numerical control 15.
  • the lifting drive device 13 receiving the upper tool 11 is moved along the positioning axis 16 by means of a motor drive 17.
  • the movement of the plunger 12 along the stroke axis 14 and the positioning of the stroke drive device 13 along the positioning axis 16 take place by means of a motor drive 17 in the form of a drive arrangement 17, in particular a spindle drive arrangement, with a drive spindle extending in the direction of the positioning axis 16 and firmly connected to the machine frame 2 18.
  • the lifting drive device 13 is guided during movements along the positioning axis 16 on three guide rails 19 of the upper frame leg 3, of which in FIG Figure 1 two guide rails 19 can be seen.
  • the remaining guide rail 19 runs parallel to the visible guide rail 19 and is spaced from this in the direction of the X-axis of the coordinate system of the numerical control 15.
  • Guide shoes 20 of lifting drive device 13 run on guide rails 19.
  • the mutual engagement of guide rail 19 and guide shoes 20 is such that this connection between guide rails 19 and guide shoes 20 can also absorb a load acting in the vertical direction. Accordingly, the lifting device 13 is suspended on the machine frame 2 via the guide shoes 20 and the guide rails 19. A further component of the lifting drive device 13 is a wedge gear 21, by means of which a position of the upper tool 11 relative to the lower tool 9 can be adjusted.
  • the lower tool 9 is received such that it can be moved along a lower positioning axis 25.
  • This lower positioning axis 25 runs in the direction of the Y-axis of the coordinate system of the numerical control 15.
  • the lower positioning axis 25 is preferably aligned parallel to the upper positioning axis 16.
  • the lower tool 9 can be connected directly to the lower positioning axis 16 with a motorized Drive arrangement 26 can be moved along positioning axis 25.
  • the lower tool 9 can also be provided on a lifting drive device 27, which can be moved along the lower positioning axis 25 by means of the motorized drive arrangement 26.
  • This drive arrangement 26 is preferably designed as a spindle drive arrangement.
  • the lower lifting drive device 27 can correspond in structure to the upper lifting drive device 13.
  • the motor drive arrangement 26 can also correspond to the motor drive arrangement 17.
  • the lower lifting drive device 27 is also slidably mounted on guide rails 19 assigned to a lower horizontal frame leg 4.
  • Guide shoes 20 of the lifting drive device 27 run on the guide rails 19 so that the connection between the guide rails 19 and guide shoes 20 on the lower tool 9 can also absorb a load acting in the vertical direction. Accordingly, the lifting drive device 27 is also suspended via the guide shoes 20 and the guide rails 19 on the machine frame 2 and spaced apart from the guide rails 19 and guide shoes 20 of the upper lifting drive device 13.
  • the lifting drive device 27 can also comprise a wedge gear 21, by means of which the position or height of the lower tool 9 can be adjusted along the Z-axis.
  • the numerical control 15 can control both the motorized drives 17 for moving the upper tool 11 along the upper positioning axis 16 and the motorized drive or drives 26 for moving the lower tool 9 along the lower positioning axis 25 independently of one another.
  • the upper and lower tools 11, 9 can thus be moved synchronously in the direction of the Y axis of the coordinate system.
  • An independent movement of the upper and lower tool 11, 9 can also be controlled in different directions. This independent movement of the upper and lower tools 11, 9 can be controlled at the same time.
  • By decoupling the Movement between the upper tool 11 and the lower tool 9, increased flexibility in the machining of workpieces 10 can be achieved.
  • the upper and lower tools 11, 9 for machining the workpieces 10 can also be designed in a variety of ways.
  • a component of the lifting drive device 13 is the wedge gear 21, which is shown in Figure 2 is shown.
  • the wedge gear 21 comprises two drive-side wedge gear elements 122, 123 as well as two driven-side wedge gear elements 124, 125.
  • the latter are structurally combined to form a structural unit in the form of a driven-side double wedge 126.
  • the plunger 12 is rotatably mounted about the stroke axis 14 on the double wedge 126 on the output side.
  • a motorized rotary drive device 128 is accommodated in the double wedge 126 on the output side and moves the plunger 12 along the stroke axis 14 if necessary. Both left and right rotation of the plunger 12 is possible according to the double arrow in FIG Figure 2 possible.
  • a plunger bearing 129 is shown schematically.
  • the tappet bearing 129 allows low-friction rotational movements of the tappet 12 about the stroke axis 14, and on the other hand, the tappet bearing 129 supports the tappet 12 in the axial direction and accordingly carries loads that act on the tappet 12 in the direction of the stroke axis 14 into the double wedge 126 on the output side from.
  • the double wedge 126 on the output side is delimited by a wedge surface 130 and by a wedge surface 131 of the transmission element 125 on the output side.
  • Wedge surfaces 132, 133 of the drive-side wedge gear elements 122, 123 lie opposite the wedge surfaces 130, 131 of the output-side wedge gear elements 124, 125.
  • the drive-side wedge gear element 122 and the output-side wedge gear element 124, as well as the drive-side wedge gear element 123 and the output-side wedge gear element 125 are guided in the direction of the Y-axis, i.e. in the direction of the positioning axis 16 of the lifting drive device 13, so that they can move relative to one another through longitudinal guides 134, 135.
  • the drive-side wedge gear element 122 has a motorized drive unit 138
  • the drive-side wedge gear element 123 has a motorized drive unit 139. Both drive units 138, 139 together form the spindle drive arrangement 17.
  • the motor drive units 138, 139 have in common that in Figure 1 The drive spindle 18 shown, as well as the lifting drive device 13, 27 mounted on the machine frame 2 and consequently on the supporting structure side.
  • the drive-side wedge gear elements 122, 123 are operated in such a way that they move towards each other along the positioning axis 16, for example, which results in a relative movement between the drive-side wedge gear elements 122, 123 on the one hand and the driven-side wedge gear elements 124, 125 on the other .
  • the double wedge 126 on the output side and the plunger 12 mounted on it are moved downward along the stroke axis 14.
  • the punch which is mounted on the ram 12, for example as an upper tool 11, executes a working stroke and processes a workpiece 10 mounted on the workpiece support 28, 29 or workpiece support 8.
  • the ram 12 is in turn moved along the Lifting axis 14 raised or moved upwards.
  • the above-described lifting drive device 13 according to Figure 2 is preferably constructed identically as a lower lifting drive device 27 and accommodates the lower tool 9.
  • FIG 3 a schematic diagram of a possible stroke movement of the plunger 12 is shown.
  • the diagram shows a stroke course along the Y-axis and the Z-axis.
  • an oblique stroke movement of the stroke ram 12 down towards the workpiece 10 can be controlled, as is shown by the first straight line A.
  • the plunger 12 can be lifted off vertically, for example, as indicated by the straight line B. is shown.
  • the work sequence described above can then be repeated, for example. If the workpiece 10 is moved on the workpiece support surface 28, 29 for a subsequent processing step, a movement along the straight line C can also be omitted.
  • the ones in the diagram in Figure 3 The possible stroke movement of the ram 12 on the upper tool 11 shown is preferably combined with a lower tool 9 that is held stationary.
  • the lower tool 9 is positioned within the machine frame 2 in such a way that at the end of a working stroke of the upper tool 11, the upper and lower tool 11, 9 assume a defined position.
  • This exemplary superimposed stroke profile can be controlled both for the upper tool 11 and for the lower tool 9.
  • a superimposed stroke movement of the upper tool and / or lower tool 11, 9 can be controlled.
  • FIG 4 A schematic diagram is shown which shows a stroke movement of the plunger 12 according to the line D shown by way of example along a Y-axis and a Z-axis.
  • a stroke movement of the plunger 12 can run through a curve or arc, in that a superimposition of the movement movements in the Y-direction and Z-direction is controlled accordingly by the controller 15.
  • Such a flexible superimposition of the traversing movements in the X and Z directions enables specific machining tasks to be solved.
  • the control of such a curve profile can be provided for the upper tool 11 and / or lower tool 9.
  • FIG. 3 is a schematic view of the machine tool 1 according to FIG Figure 1 shown.
  • the workpiece support 28 can, for example, be assigned to a loading station, not shown in detail, through which unprocessed workpieces 10 are placed on the workpiece support surface 28.
  • Adjacent to the workpiece support surface 28, 29, a feed device 22 is provided which comprises a plurality of grippers 23 in order to grip the workpiece 10 placed on the workpiece support 28.
  • the workpiece 10 is guided through the machine frame 2 in the X direction by means of the feed device 22.
  • the feed device 22 can also be actuated to be movable in the Y direction.
  • the workpiece 10 can be moved by the feed device 22 both in the X direction and against the X direction.
  • This movement of the workpiece 10 can be adapted to a movement of the upper tool 11 and lower tool 9 in and against the Y-direction for the respective machining task.
  • the further workpiece support 29 is provided on the machine frame 2. This can be assigned to an unloading station, for example. Alternatively, the loading and unloading of the unprocessed workpiece 10 and the processed workpiece 10 with workpieces 81 can also be assigned to the same workpiece support 28, 29.
  • the machine tool 1 can furthermore have a laser processing device 201, in particular a laser cutting machine, which is only shown schematically in a top view in FIG Figure 5 is shown.
  • This laser processing device 201 can be designed, for example, as a CO 2 laser cutting machine.
  • the laser processing device 201 comprises a laser source 202 which generates a laser beam 203 which is guided to a laser processing head, in particular laser cutting head 206, by means of a schematically illustrated beam guide 204, and is focused therein. Thereafter, the laser beam 204 becomes perpendicular through a cutting nozzle aligned with the surface of the workpiece 10 in order to machine the workpiece 10.
  • the laser beam 203 acts on the workpiece 10 at the machining location, in particular the cutting location, preferably together with a process gas jet. The cutting point at which the laser beam 203 strikes the workpiece 10 is adjacent to the processing point of the upper tool 11 and lower tool 9.
  • the laser cutting head 206 can be moved at least in the Y direction, preferably in the Y and Z directions, by a linear drive 207 with a linear axis system.
  • This linear axis system which receives the laser cutting head 206, can be assigned to the machine frame 2, attached to it or integrated therein.
  • a beam passage opening can be provided in the workpiece support 28 below a working space of the laser cutting head 206.
  • a beam collecting device for the laser beam 21 can preferably be provided below the beam passage opening.
  • the beam passage opening and optionally the beam collecting device can also be designed as a structural unit.
  • the laser processing device 201 can alternatively also have a solid-state laser as the laser source 202, the radiation of which is guided to the laser cutting head 206 with the aid of a light guide cable.
  • the workpiece support 28, 29 can extend directly to the workpiece support 8, which at least partially surrounds the lower tool 9.
  • the lower tool 9 can be moved along the lower positioning axis 25 in and against the Y direction within a free space that arises in between.
  • a machined workpiece 10 rests on the workpiece support 28, in which a workpiece part 81 has been cut free from a cutting gap 83, for example by punching or by laser beam machining, except for a residual connection 82.
  • This residual connection holds the workpiece 81 in the workpiece 10 or in the remaining skeleton.
  • the workpiece 10 is moved by means of the feed device 22 to the upper and lower tool 11, 9 positioned for a punching and discharge step.
  • the remaining connection 82 is separated by a punching stroke of the upper tool 11 to the lower tool 9.
  • the workpiece part 81 can be discharged downwards, for example, by partially lowering the workpiece support 8.
  • the workpiece part 81 that has been cut free can be transferred back to the workpiece support 28 or onto the workpiece support 29 in order to unload the workpiece part 81 and the scrap skeleton.
  • Small workpiece parts 81 can also optionally be discharged through an opening in the lower tool 9.
  • FIG. 6 a perspective view of a tool 31 is shown, which is provided for punching, cutting, embossing and / or forming in the workpiece 10 with a pendulum stroke.
  • a tool 31 is also referred to as a pendulum stroke tool.
  • this tool 31 reference is also made to the sectional view of the tool 31 in FIG Figure 7 Referenced.
  • the upper tool 11 comprises a base body 33 and a clamping pin 34 arranged thereon. These have a common position axis 35.
  • the base body 33 and the clamping pin 34 can be formed in one piece.
  • the base body 33 can also be held clamped on the clamping pin 34.
  • An indexing wedge 36 is provided on the base body 33, by means of which the upper tool 11 is aligned in an upper tool holder of the machine tool 1.
  • the base body 33 has a machining tool 37 opposite the clamping pin 34, which is provided on the base body 33.
  • a hold-down surface 501 is provided on an underside of the base body 33. This hold-down surface 501 is preferably aligned at right angles to the position axis 35.
  • a machining edge 38 of the machining tool 37 is provided adjacent to the hold-down surface 501.
  • Two spaced apart are preferred Machining edges 38, 39 are provided.
  • a machining surface 502 is provided in the base body 33, which is recessed in relation to the machining edges 38, 39.
  • a recess 503 is provided in the base body 33 starting from the hold-down surface 501.
  • the at least one processing edge 38, 39 advantageously extends perpendicular to the position axis 35 and preferably along the entire base body 33. As a result, there is, for example, a groove-shaped depression that extends along the entire hold-down surface 501.
  • the lower tool 9 comprises a base body 41 in which an indexing element (not shown in detail) is provided, which is used to align the lower tool 9 in a lower tool holder of the machine tool 1.
  • the lower tool 9 comprises a positioning axis 48. This positioning axis 48 can lie in the stroke axis 30, about which the lower tool 9 can be rotatably controlled.
  • a support surface 47 is provided on the base body 41 of the lower tool 9, which is oriented perpendicular to the position axis 48.
  • the support surface 47 is preferably aligned parallel to the hold-down surface 501.
  • a counter-tool body 93 is provided in the support surface 47.
  • an opening 46 is provided in the support surface 47 in which the counter-tool body 93 is positioned.
  • This counter tool body 93 is preferably positioned in the support surface 47 such that the position axis 48 crosses the counter tool body 93.
  • This support surface 47 can furthermore have sliding elements 513 which lie in the plane of the support surface 47 and minimize friction between the workpieces 10 and the support surface 47 of the lower tool 9 during a relative movement.
  • the counter tool body 93 is designed as a counter roller 505 which has at least one counter edge 506.
  • Two opposing edges 506 and 507 arranged at a distance from one another are preferably provided.
  • the distance between the machining edges 38, 39 advantageously corresponds to the distance between the opposing edges 506, 507 and twice the material thickness of the workpiece 10 to be machined during a deformation.
  • the distance between the machining edges 38, 39 corresponds to the distance between the opposing edges 506, 507 and the cutting clearance.
  • a machining device 508 is provided adjacent to the at least one counter edge 506 or between the two counter edges 506 and 507, which is raised with respect to the support surface 47 and protrudes in the direction of the upper tool 11.
  • the at least one opposing edge 506, 507 is preferably in the plane of the support surface 47.
  • the opposing edge 506, 507 is adjoined by a support surface 509, 510, which is preferably aligned with the holding-down surface 501, opposite the processing device 508.
  • the upper side or upper edge of the sliding elements 513 lies in the plane of the support surface 509, 510.
  • the counter roller 505 is rotatably mounted in the base body 41 of the lower tool 9 by an axis of rotation 511.
  • the axis of rotation 511 is advantageously aligned perpendicular to the position axis 48 or parallel to the support surface 47.
  • the processing device 508 has a counter surface 521 in the form of an arc segment when viewed in cross section.
  • a bead 515 can be introduced into the workpiece 10, which has a course corresponding to the counter surface 521.
  • this tool 31 is also referred to as a rolling tool, in particular a beading tool or a roll-forming tool.
  • a plate-shaped workpiece 10 is positioned between the upper tool 11 and the lower tool 9. Then the Upper tool and / or lower tool 11, 9 moved towards one another, in particular along the stroke axis 14, 30, until they are in a processing position 516 according to FIG Figure 8 are convicted.
  • this machining position 516 the workpiece 10 is held clamped between the upper tool 11 and the lower tool 9.
  • the hold-down surface 501 rests on an upper side of the workpiece 10 and holds the workpiece 10 down to the support surface 47 on the lower tool 9.
  • the opposite surface 521 of the machining device 508 engages the underside of the workpiece 10 and deforms it into the recess 503 on the base body 33 of the upper tool 11.
  • the machining edges 38, 39 are opposite the opposite edges 506, 507, at a distance the thickness of the workpiece 10. Due to the increased configuration of the processing device 508 and the opposing positioning of the processing edge 38 relative to the opposing edge 506 and the processing edge 39 relative to the opposing edge 507, the beginning of a bead 515 is introduced.
  • the upper tool 11 and the workpiece 10 are then held stationary and the lower tool 9 is controlled by a movement along the lower positioning axis 25.
  • This is in Figure 9 shown.
  • the bead 515 is introduced into the workpiece 10, which is also held stationary relative to the upper tool 11.
  • the counter roller 505 provided on the lower tool 9 with the support surfaces 509, 510 and the counter surface 521 of the machining device 508 as well as the preferably provided sliding elements 513 promote a low coefficient of friction between the workpiece 10 and the lower tool 9.
  • This first working stroke or pendulum stroke in which the position axes 35 and 48 are offset parallel to one another, is then ended before the counter-roller 505 has reached one end of the machining edges 38, 39 of the machining tool 37.
  • the upper tool 11 is moved along the upper positioning axis 16.
  • the lower tool 9 and the workpiece 10 remain stationary during this movement.
  • the movement of the upper tool 11 can then be ended when the position axes 35, 38 are again aligned with one another.
  • the traversing movement of the upper tool 11 can also be ended when a rear end section of the machining edge 38, 39 still holds the workpiece 10 in a clamping manner with respect to the machining device 508.
  • the distance between the upper and lower tools 11, 9 in the region of the hold-down surface 501 and the support surface 47 preferably remains constant.
  • the machining device 508 can be provided stationary on the base body 41 of the lower tool 9.
  • the contour and shape of the processing device 508 can correspond to that shown in FIG Figures 6 and 7 is shown.
  • a stationary processing device 508 can be provided in particular if very thin workpieces or a very soft material of a workpiece are to be processed.
  • FIG. 3 is a schematic side view of an alternative embodiment of the tool 31 to FIG Figure 11 shown.
  • the counter roller 505 has a processing device 508 with a counter surface 521 which has a cutting edge 520 and an adjoining inclined counter surface 521.
  • This mating surface 521 is designed as an inclined conical surface.
  • the upper tool 11 comprises the machining edge 38, which lies opposite the opposite edge 506.
  • the cutting edge 520 can be guided in the processing position 516 of the upper tool 11 and lower tool 9 along a punching surface 522, which adjoins the hold-down surface 501 at right angles and protrudes into the recess 503.
  • a processing surface 502 and the recess 503 are, for example, wider than the counter surface 521 of the processing device 508, so that a further processing edge 39 can come to rest on the support surface 47, for example.
  • Such a tool 31 enables a cut 523 to be made in the workpiece 10, with a deformation or embossing taking place at the same time in order to form a gill 524 on the workpiece 10, for example.
  • Figure 13 is an alternative embodiment of the tool 31 to Figure 12 shown.
  • the machining device 508 likewise has a cutting edge 520, which, however, is adjoined by a bell-shaped counter surface 521.
  • the machining edges 38, 39 of the machining tool 37 on the upper tool 11 are assigned to the mating edges 506 and 507 on the mating roller 505 of the mating tool body 93 on the lower tool 9. As a result, a cut 523 and a curved gill 524 can again be formed.
  • FIG 14 is another alternative embodiment of the tool 31 to Figure 11 shown.
  • the upper tool 11 corresponds to the upper tool 11 according to FIG Figure 11 .
  • the lower tool 9 receives a counter roller 505 with a processing device 508, in which two cutting edges 520 spaced apart from one another are provided. The opposing surface 521 is formed in between.
  • the processing device 508 is designed as a cylindrical roller whose circumference is greater than that of the Opposite edges 506 and 507 or of the supporting surfaces 509, 510 adjoining them.
  • the upper tool 11 comprises a support roller 526 as a machining surface 502.
  • An axis of rotation of this support roller 526 is preferably oriented at right angles to the position axis 35. This can also be oriented inclined to the position axis 35, depending on the contour to be introduced into the workpiece 10.
  • Such a support roller 526 can also be used in the embodiments described above.
  • the lower tool 9 has a step-shaped or S-shaped counter surface 521 as a counter roller 505.
  • a free edge of the workpiece 10 is reshaped or includes an embossing.
  • the tool 31 can be referred to as a roll forming tool or roll stamping tool.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Punching Or Piercing (AREA)
  • Milling Processes (AREA)
  • Milling, Broaching, Filing, Reaming, And Others (AREA)
  • Shearing Machines (AREA)

Claims (15)

  1. Outil destiné à usiner des pièces (10) en forme de plaque, en particulier des tôles,
    - avec un outil supérieur (11) qui présente une tige de serrage (34) et un corps de base (33) lesquels sont situés dans un axe de positon (35) commun, et avec un outil d'usinage (37) qui est disposé sur le corps de base (33), à l'opposé de la tige de serrage (34) et présente au moins une arête d'usinage (38, 39),
    - avec un outil inférieur (9) qui présente un corps de base (41) pourvu d'une surface d'appui (47) destinée à recevoir la pièce à usiner (10) et avec un contre-corps (93) prévu sur ledit corps de base (41) et réalisé en tant que contre-galet (505) qui présente ladite au moins une contre-arête (506, 507) laquelle est située à l'opposé de ladite au moins une arête d'usinage (38, 39) de l'outil d'usinage (37), le corps de base (41) comprenant un axe de position (48) qui est orienté de manière perpendiculaire à la surface d'appui (47), et
    - l'outil supérieur (11) et l'outil inférieur (9) pouvant être déplacés l'un vers l'autre dans un sens de course en vue d'usiner une pièce (10) disposée entre eux, et entre l'outil supérieur (11) et l'outil inférieur (9) étant formé un plan d'usinage,
    caractérisé en ce que
    - ladite au moins une arête d'usinage (38, 39) de l'outil d'usinage (37) s'étend au moins en partie le long d'une surface de maintien (501) prévue sur le corps de base (33), et
    - de manière contiguë à ladite au moins une contre-arête (506, 507) est prévue une installation d'usinage (508) qui présente au moins une contre-surface (521) courbe orientée dans le sens longitudinal de l'arête d'usinage (38, 39) de l'outil d'usinage (37).
  2. Outil selon la revendication 1, caractérisé en ce que ladite au moins une arête d'usinage (38, 39) s'étend le long de la totalité du corps de base (33) .
  3. Outil selon la revendication 1 ou 2, caractérisé en ce que ladite au moins une arête d'usinage (38, 39) est orientée perpendiculairement à l'axe de position (35) et croise de préférence l'axe de position (35) de l'outil d'usinage (37).
  4. Outil selon l'une quelconque des revendications précédentes, caractérisé en ce que l'outil d'usinage (37) de l'outil supérieur (11) présente, de manière contiguë à l'arête d'usinage (38, 39), une surface d'usinage (502) qui est prévue de préférence dans un creux (503) ménagé dans le corps de base (33) de l'outil supérieur (11).
  5. Outil selon la revendication 4, caractérisé en ce que le creux (503) ménagé dans le corps de base (33) est délimité par les deux arêtes d'usinage (38, 39) qui sont disposées à une distance donnée l'une de l'autre, de préférence de manière parallèle entre elles.
  6. Outil selon la revendication 1, caractérisé en ce que le corps de contre-outil (93) est logé dans le corps de base (41) de l'outil inférieur (9) de manière à pouvoir tourner autour d'un axe de rotation (511), de préférence perpendiculairement à l'axe de position (48).
  7. Outil selon la revendication 6, caractérisé en ce que la contre-arête (505, 506) est prévue de manière à s'étendre sur la circonférence du contre-galet (505) auquel est contiguë une surface de support (509, 510) qui est orientée par rapport à la surface de maintien (501) située sur le corps de base (33) de l'outil supérieur (11) et qui se trouve de préférence dans un plan de la surface d'appui (47) de l'outil inférieur (9).
  8. Outil selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une contre-surface (521) de l'installation d'usinage (508) est attenante aux surfaces de support (509, 510), lesquelles sont situées à l'opposé l'une de l'autre et sont contiguës aux contre-arêtes (506, 507), et pénètre au moins en partie dans le creux (503) lorsque l'outil supérieur (11) se trouve dans une position d'usinage (516) par rapport à l'outil inférieur (9).
  9. Outil selon l'une quelconque des revendications précédentes, caractérisé en ce que la contre-surface (521) est réalisée en tant que surface de formage ou en tant que surface de formage pourvue d'une arête de coupe (520) qui est contiguë à celle-ci d'un seul côté ou en tant que surface de formage pourvue d'arêtes de coupe (520) qui délimitent celle-ci des deux côtés.
  10. Outil selon l'une quelconque des revendications précédentes, caractérisé en ce que la surface d'usinage (502) de l'outil d'usinage (37) est réalisée en tant que galet de soutien (526).
  11. Machine-outil destinée à usiner des pièces en forme de plaque, de préférence des tôles,
    - pourvue d'un outil supérieur (11) qui peut être déplacé, grâce à un dispositif d'entraînement de levage (13), le long d'un axe de levage (14) en direction d'une pièce (10) devant être usinée avec l'outil supérieur (11), voire en direction opposée, et qui peut être positionné le long d'un axe de positionnement supérieur (16) s'étendant perpendiculairement à l'axe de levage (14) et qui peut être déplacé, grâce à un mécanisme d'entraînement (17), le long dudit axe de positionnement supérieur (16),
    - pourvue d'un outil inférieur (9) qui est orienté par rapport à l'outil supérieur (11) et qui peut être déplacé, grâce à un dispositif d'entraînement de levage (27), le long d'un axe de levage inférieur (30) en direction de l'outil supérieur (11) et qui peut être positionné le long d'un axe de positionnement inférieur (25) orienté perpendiculairement à l'axe de levage (14) de l'outil supérieur (11) et qui peut être déplacé, grâce à un mécanisme d'entraînement (26), le long de l'axe de positionnement inférieur (25),
    - pourvue d'une commande (15) grâce à laquelle les mécanismes d'entraînement à moteur (17, 26) destinés à déplacer les outils supérieur et inférieur (11, 9) peuvent être activés, caractérisée en ce que
    - le mouvement de déplacement de l'outil supérieur (11) le long de l'axe de positionnement supérieur (16) et le mouvement de déplacement de l'outil inférieur (9) le long de l'axe de positionnement inférieur (25) peuvent être respectivement activés indépendamment l'un de l'autre, et
    - un outil (31) selon l'une quelconque des revendications 1 à 10 est prévu en vue d'usiner des pièces (10).
  12. Procédé destiné à usiner des pièces en forme de plaque, de préférence des tôles,
    - lors duquel un outil supérieur (11) qui peut être déplacé, grâce à un dispositif d'entraînement de levage (13), le long d'un axe de levage (14) en direction d'une pièce (10) devant être usinée avec l'outil supérieur (11), voire dans la direction opposée, et qui peut être positionné le long d'un axe de positionnement supérieur (16) s'étendant perpendiculairement à l'axe de levage (14) est déplacé, grâce à un mécanisme d'entraînement (17), le long dudit axe de positionnement supérieur (16),
    - lors duquel un outil inférieur (9) qui est orienté par rapport à l'outil supérieur (11) et qui peut être positionné le long d'un axe de positionnement inférieur (25) qui est orienté perpendiculairement à l'axe de levage (14) de l'outil supérieur (11) est déplacé, grâce à un mécanisme d'entraînement (26), le long dudit axe de positionnement inférieur (25),
    - lors duquel les mécanismes d'entraînement à moteur (17, 26) destinés à déplacer les outils supérieur et inférieur (11, 9) sont activés par une commande (15), caractérisé en ce que
    - un outil (31) selon l'une quelconque des revendications 1 à 10 est utilisé en vue d'usiner les pièces (10) et
    - l'outil supérieur (11) et/ou l'outil inférieur (9) est/sont activé(s) de manière à effectuer un mouvement de course de telle sorte que la pièce (10) est maintenue fixée entre l'outil supérieur (11) et l'outil inférieur (9) et
    - en vue de l'usinage de la pièce (10),
    - l'outil supérieur (11) et l'outil inférieur (9) effectuent, ensemble ou de manière individuelle, un mouvement de rotation l'un par rapport à l'autre autour de leur axe de position respectif (35, 48) ou
    - l'outil supérieur (11) et l'outil inférieur (9) effectuent, ensemble ou de manière individuelle, un mouvement de déplacement l'un par rapport à l'autre le long de leur axe de positionnement respectif (16, 25) ou
    - l'outil supérieur (11) et l'outil inférieur (9) effectuent, ensemble ou de manière individuelle, un mouvement de rotation l'un par rapport à l'autre autour de leur axe de levage respectif (14, 30) et effectuent, ensemble ou de manière individuelle, un mouvement de déplacement l'un par rapport à l'autre le long de leur axe de positionnement respectif (16, 25).
  13. Procédé selon la revendication 12, caractérisé en ce que, après le mouvement de course de l'outil supérieur (11) et/ou de l'outil inférieur (9) permettant de maintenir la pièce à usiner (10) fixée entre eux, est activé, en vue d'usiner ladite pièce (10), un premier mouvement de déplacement de l'outil inférieur (9) par rapport à l'outil supérieur (11) le long de l'axe de positionnement inférieur (25) de telle sorte que le corps de contre-outil (93) est déplacé par rapport à l'outil d'usinage (37) le long de l'axe de positionnement inférieur (25) et en ce qu'ensuite est activé un mouvement de déplacement de l'outil supérieur (11) le long de l'axe de positionnement supérieur (16) pendant que l'outil inférieur (9) est maintenu à l'arrêt.
  14. Procédé selon la revendication 12 ou 13, caractérisé en ce que le mouvement de déplacement de l'outil supérieur (11) et de l'outil inférieur (9) le long du plan d'usinage est activé grâce à une course motrice maximale lors de laquelle la pièce à usiner (10) est maintenue fixée par l'arête d'usinage (38, 39) de l'outil d'usinage (37) et par la contre-surface (521) de l'installation d'usinage (508) du corps de contre-outil (93).
  15. Procédé selon l'une quelconque des revendications 12 à 14, caractérisé en ce qu'un espace qui sépare la surface de maintien (501) de l'outil supérieur (11) de la surface d'appui (47) de l'outil inférieur (9) est maintenu constant pendant l'usinage de la pièce (10).
EP17783414.0A 2016-09-26 2017-09-26 Outil et machine-outil ainsi que procédé d'usinage de pièces en forme de plaque Active EP3515617B1 (fr)

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PL17783414T PL3515617T3 (pl) 2016-09-26 2017-09-26 Narzędzie i obrabiarka oraz sposób obróbki przedmiotów obrabianych mających postać płyt

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DE102016118175.7A DE102016118175B4 (de) 2016-09-26 2016-09-26 Werkzeugmaschine und Verfahren zum Bearbeiten von plattenförmigen Werkstücken
DE102016120035.2A DE102016120035B3 (de) 2016-10-20 2016-10-20 Werkzeug und Werkzeugmaschine sowie Verfahren zum Bearbeiten von plattenförmigen Werkstücken
PCT/EP2017/074306 WO2018055186A1 (fr) 2016-09-26 2017-09-26 Outil et machine-outil ainsi que procédé d'usinage de pièces en forme de plaque

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US (1) US11471924B2 (fr)
EP (1) EP3515617B1 (fr)
JP (1) JP7036804B2 (fr)
CN (1) CN109789464B (fr)
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WO (1) WO2018055186A1 (fr)

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PL3515617T3 (pl) 2021-04-06
US20190217360A1 (en) 2019-07-18
WO2018055186A1 (fr) 2018-03-29
JP7036804B2 (ja) 2022-03-15
CN109789464A (zh) 2019-05-21
EP3515617A1 (fr) 2019-07-31
JP2019529120A (ja) 2019-10-17
CN109789464B (zh) 2021-01-05
US11471924B2 (en) 2022-10-18

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