WO2013053569A1 - Machine-outil et procédé de production de pièces - Google Patents

Machine-outil et procédé de production de pièces Download PDF

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Publication number
WO2013053569A1
WO2013053569A1 PCT/EP2012/068282 EP2012068282W WO2013053569A1 WO 2013053569 A1 WO2013053569 A1 WO 2013053569A1 EP 2012068282 W EP2012068282 W EP 2012068282W WO 2013053569 A1 WO2013053569 A1 WO 2013053569A1
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WO
WIPO (PCT)
Prior art keywords
support
gap
workpieces
plate
workpiece
Prior art date
Application number
PCT/EP2012/068282
Other languages
German (de)
English (en)
Inventor
Andreas Kettner
Peter Epperlein
Original Assignee
Trumpf Werkzeugmaschinen Gmbh + 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
Application filed by Trumpf Werkzeugmaschinen Gmbh + Co. Kg filed Critical Trumpf Werkzeugmaschinen Gmbh + Co. Kg
Publication of WO2013053569A1 publication Critical patent/WO2013053569A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/36—Removing material
    • B23K26/38—Removing material by boring or cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08—Devices involving relative movement between laser beam and workpiece
    • B23K26/083—Devices involving movement of the workpiece in at least one axial direction
    • B23K26/0838—Devices involving movement of the workpiece in at least one axial direction by using an endless conveyor belt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08—Devices involving relative movement between laser beam and workpiece
    • B23K26/0869—Devices involving movement of the laser head in at least one axial direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/0408—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work for planar work

Definitions

  • the invention relates to a machine tool with a workpiece support for receiving plate-shaped materials for processing with a separating device and a method for producing workpieces from a plate-shaped material by a separation process with a separating device, in particular with such machine tools.
  • DE 10 2004 034 256 A1 discloses a device for cutting sheet metal with at least one laser cutting device accommodated on a frame, having a movable laser, and a device for receiving a sheet located in the focal region of the laser. To avoid damage to the device in the cutting region of the laser, the device for receiving an adjustable by means of an adjusting device relative to the frame opening in alignment with the laser beam is moved in line.
  • a 2D laser processing machine which has a workpiece support, which comprises a plurality of mutually parallel support elements. Each of these support elements comprises at intervals spaced Tragyakspitzen on which the plate-shaped material rests. Such contact points between the Trag Vietnamesespitzen and the plate-shaped material can have a negative impact on the workpiece quality during the cutting process, since it can come to scratch the overlying side of the plate-shaped material and for baking with the Tragticianspitzen.
  • a static support of the plate-shaped material makes it difficult to remove good parts from the machine, which inevitably requires additional automation components, such as a rake or a suction gripper.
  • JP 2003290968 A discloses a laser processing machine in which the plate-shaped material is likewise clamped by a clamping device.
  • the plate-shaped material rests on a workpiece support, which are formed by two workpiece support tables, which each have guide pulleys facing the cutting gap, which are movable in and against the X-direction.
  • the processing area within the laser processing machine need not be increased due to a movement of the cutting gap, but includes a constant space size.
  • the plate-shaped material with the cut workpieces is led out via a removal belt from the processing space, which is aligned with the plane of the support tables. During removal, there may be a risk of entanglement of already cut workpieces and waste parts with respect to the cutting gap in over-driving.
  • a further laser processing machine which has a workpiece support surface of two support tables.
  • One of the two support tables is fixedly arranged on the main body of the processing machine.
  • the second support table which adjoins the cutting gap, can be moved out of the processing area completely into a loading zone.
  • another support table is retracted into the processing area of the laser cutting machine in order to carry out a subsequent processing of the plate-shaped material.
  • About the previously extended support table takes a removal of the machined plate-shaped material.
  • Such an arrangement also requires a clamping device for the plate-shaped material.
  • a high expenditure on equipment for the design of such a laser processing machine is required.
  • a hooking of the workpieces and waste parts with the cutting gap occur.
  • WO 2007/003299 A1 describes a machine tool with a workpiece support for supporting plate-shaped materials for processing with a separating device.
  • This has a machining head, which is movable during a separation process in the plate-shaped material at least in the Y direction.
  • the workpiece support comprises a first support table with a first support surface and a second support table with a second support surface, wherein the support surfaces are spaced from each other to form a gap below the machining head.
  • the position and width of the gap can be adjusted during the separation process in the processing area of the separator.
  • the respective bearing surface of the first and second support table is limited by two rollers, which are each independently movable in and against the feed direction.
  • This known machine tool is basically very flexible for processing individual workpieces.
  • this flexibility requires a complex mechanism and control to maintain the belt tension of the respective support tables.
  • the finished workpieces remain in a subsequent processing of other workpieces from the same plate-shaped material on the support table, whereby the moving masses increased and only lower speeds can be controlled. If individual machined workpieces are transported away from one of the two support tables, the machining process is interrupted during this period.
  • the present invention has for its object to provide a machine tool for processing a plate-shaped material with a separator and a corresponding processing method, whereby a higher production speed and improved product quality of the workpieces can be achieved.
  • This object is achieved in that a control is provided which controls a movement of the support tables of the workpiece support to adjust a gap width between the support tables, which is adapted to a size ofParkeusenden by the gap between the support surfaces down workpiece or waste part.
  • this embodiment of the movable support tables with the formation of an intermediate cutting gap has the advantage that a so-called non-reactive cutting is made possible in comparison to workpiece supports, which consist of several, usually parallel to each other and in the position unchangeable support elements. This means that when passing over support elements with the cutting beam a reaction due to the reflection of the cutting beam to the support elements and thereby deterioration of the underside of the workpiece or the plate-shaped material is avoided and thus improved quality of the workpieces is achieved.
  • a preferred embodiment of the invention provides that at least during a Ausschleusvorganges the workpiece or the waste part down a discharge element below the gap formed between the support tables for receiving the falling through the gap workpiece or waste part is positioned.
  • a Ausschleusvorgange the workpiece or the waste part down a discharge element below the gap formed between the support tables for receiving the falling through the gap workpiece or waste part is positioned.
  • targeted removal of the workpieces and / or waste parts guided through the gap downwards can be achieved.
  • at first all waste parts which are produced during the production of a workpiece can be discharged downwards and optionally taken up by the discharge element. Subsequently, the workpieces can be absorbed by the discharge element.
  • a sorting for workpieces and waste parts can already be done within the machine tools. There is also the possibility that first several waste parts and then several workpieces are discharged.
  • waste parts and workpieces can also be discharged at the same time.
  • the discharge element is preferably positioned during the separation process outside the gap width under the first or second support table, so that damage to the discharge element by the cutting jet, slag and / or burning is avoided. Immediately prior to completing a cut-off from a workpiece or waste part, the discharge element can be moved under the cutting gap.
  • the discharge element is in particular designed as a discharge table, which has roller, roller, brush or belt-shaped support elements, or as a part drawer or as a collecting device. This measure allows a transport of the workpieces, without the workpieces being scratched.
  • the first and the second bearing surface of the support table preferably each have at least one support element enabling a relative movement between the support table and the plate-shaped material, which is designed as a roller-shaped, roller-shaped, brush-shaped or band-shaped support element.
  • This measure allows a change in the position of the table or a change in size and position of the cutting gap under the workpiece, without causing the underside of the workpiece scratched and the plate-shaped material is moved within the processing area. Due to the design of the two associated support tables no interference contours are provided below the gap within the processing area, which lead to a throwing back of slag and / or a reflection of laser beams on a bottom of the plate-shaped material. In this way the quality of the workpieces is improved. In addition, caking of the support elements with the plate-shaped material can be prevented.
  • a further preferred embodiment of the invention provides that the support elements are driven by a controlled motor drive from the controller.
  • the cutting gap can be changed in size and location below the plate-shaped material for the production of the workpiece, without causing the plate-shaped material is changed within the processing area by friction forces in its position and position.
  • the support tables below the plate-like material perform such a relative movement to adapt both the cutting gap in position and size to the separation process as well as to the subsequent discharge operation of the workpieces and / or waste parts through the gap below.
  • a removal of workpieces from the respective support table can be effected by a movement of the support elements.
  • the plate-shaped material can advantageously be fixed and held by a clamping device. In this way it is prevented that the plate-shaped material is displaced during the movements of the support tables by frictional forces between the support surface and the plate-shaped material, so that an exact juxtaposition of separating sections of the individual separation processes is possible.
  • the clamping device may be movable relative to the cutting area, in particular in and counter to the X direction. In this way, the movement of the machining head in the X direction when performing the cutting contour can be reduced in extent or completely unnecessary, which can reduce the cost of a precise and at the same time fast positioning of the machining head. In addition, by adjusting the speed of movement of the clamping device in the X direction and the speed of movement of the machining head in the X and Y directions, an accelerated processing can be achieved.
  • the support tables are preferably in the Z direction, i. in height, variably positionable. So they are relative to each other and relative to a clamping device in the Z direction changeable. This allows the clamping device holds the plate-shaped material or the skeleton, while the cut workpieces and / or waste parts remain on the support surface during lowering of the support tables. This results in a separation of the cut parts from the skeleton.
  • the cut parts can be removed by a transport movement of the support elements on the cutting gap or alternatively transferred to a loading or unloading. Subsequently, by lifting the support tables, a support of the plate-shaped material or residual grid on the support surface for subsequent separation operations or for removal of the residual grid from the processing area in a discharge zone.
  • the gap-facing end faces of the support tables are preferably assigned gap-limiting elements, which may for example be chamfered and inclined towards the gap or are formed as rollers.
  • the geometryschleusende workpiece and / or waste part can be lowered by controlled, in particular simultaneous pulling apart of the front sides of the two support tables, so that a controlled fall movement of Missionschleusenden workpiece and / or waste part, in particular on the discharge element, and thus a risk of damage or danger a hooking of the Stanfordeusenden workpiece and / or waste part is reduced.
  • These additional Spaltab gleichieri may consist of a different temperature-resistant material than the support elements of the support tables and be formed. As a result, an extension of the service life can be achieved.
  • These additional gap-limiting elements are preferably coupled to the support tables, so that they are simultaneously moved.
  • the discharge element is movable.
  • the beam-catching device and / or a suction device can additionally be moved in height relative to the gap in order to temporarily create space for a retraction of the discharge element into the gap area.
  • An alternative embodiment provides that in the machine tool, the support tables are mechanically connected to an X-axis of the movement unit for the machining head.
  • This allows a simple and inexpensive variant of the machine tool, since the support tables are moved by the movement unit of the machining head at the same time. In this way, separate drives for the support tables can be saved.
  • An additional actuator can enlarge the cutting gap between the support tables up to a certain part size, in particular in the presence of gap-limiting elements, so that workpiece parts or workpieces or waste parts or waste can fall down and be discharged.
  • the object is further achieved by a production method for workpieces made of a plate-shaped material, in which after a separation process by a controller a discharge operation is started, in which a gap between a first and a second support table of a workpiece support is increased such that workpieces and / or waste parts can be discharged through the gap down.
  • a discharge operation is started, in which a gap between a first and a second support table of a workpiece support is increased such that workpieces and / or waste parts can be discharged through the gap down.
  • the gap width may be temporarily broadened during or after the separation process to produce a workpiece, to eject a waste part and / or the workpiece down through the gap.
  • a size of the gap width can initially be adjusted during the discharge process so that waste parts, in particular inner contours, blends and / or slugs, are discharged downwards.
  • the support tables are moved in and counter to the X direction in order to adapt the position and the size or the width of the gap to the discharge process.
  • This process step allows waste parts to be removed directly from the plate-shaped material and the workpieces directly after processing. Such waste parts are often small parts or very small parts which are particularly prone to catching.
  • the immediate discharge downwards over the gap between the support tables prevents damage to the workpieces.
  • the waste parts can be collected in a collecting container or removed with a removal device below the workpiece support. This enables process automation for the waste parts.
  • a preferred embodiment of the method according to the invention provides that during or after each separation process, by means of which a workpiece is cut free from the plate-shaped material, a discharge process for this workpiece is started.
  • a discharge process for this workpiece is started.
  • a programming for nesting the parts is selected so that the workpieces no longer adjoin neighboring parts or waste or waste areas in the free cut on areas of the outer contour. As a result, a higher material efficiency is achieved because the workpiece parts can be nested narrower.
  • the remaining as a residual grid plate-shaped material is fixed by a clamping device.
  • a clamping device which preferably also during the separation process, the plate-shaped material, a precise machining of the plate-shaped material, especially in very thin-walled materials.
  • a further alternative embodiment of the method provides that after the cutting free of one or more or all workpieces in the plate-shaped material, the support tables relative to the plate-shaped material fixed by the clamping device lowered and the remaining on the support tables workpieces discharged through the cutting gap down or by method of Auflageticians or moving the or the support elements are transferred to a Endladezone. Subsequently, the residual grid can be moved with one of the two support tables in a Endladezone.
  • This arrangement has the advantage that all separation processes are initially introduced, wherein preferably during the separation processes, the respective waste parts such as inner contours and slugs down discharged and then removed by a single lowering all workpieces from the skeleton and discharged. This in turn can be done a process time optimization.
  • discharge element Before the start of the discharge process for workpieces, which is introduced in particular after the discharge of waste parts, advantageously arranged below the first or the second support table discharge element can be moved under the gap between the first and the second support table. As a result, a secured discharge of the guided through the gap down workpieces on the discharge element. Furthermore, damage to the discharge element is avoided by the cutting jet during the separation process in the plate-shaped material.
  • the residual grid is cut according to an alternative of the method and discharged through the gap down.
  • This embodiment allows a complete processing of the plate-shaped material and an ejection down both the waste parts, in particular the inner contours, blends and / or slugs and the residual grid, as well as a discharge of the workpieces down.
  • a further preferred embodiment of the method provides that after the discharge process of the workpieces and waste parts through the gap between the support tables down the skeleton grid is transferred by moving a support table in a discharge zone. As a result, immediately after the processing of the plate-shaped material, the remaining skeleton can be moved out of the processing area. At the same time, the further support table can already be transferred to a loading zone to receive a new plate-shaped material and supply it to the processing area. As a result, a shortening of the process cycle can be achieved.
  • a predefined gap width or different predefined gap widths can be set.
  • a preferably synchronous enlargement of the gap width can be controlled, so that the workpiece (s) are discharged downwards without tilting.
  • the support tables can comprise, for example, the roller elements forming a gap or fixed beveled edges, whereby the movement to enlarge the gap results in a secured, guided removal downwards.
  • a synchronous enlargement of the gap can preferably take place. If the last separating cut is asymmetrical to the centroid of the workpiece, an asynchronous enlargement of the gap width can also be controlled. As a result, a risk of damage to the workpiece to be ejected and / or the risk of entanglement of the workpiece to be rejected can be reduced.
  • a preferably synchronous enlargement of the gap width can be activated and, at the same time, a movable support element of the support table for the removal of the workpiece or workpieces can be driven by the support table in order to lower the work piece (s).
  • the support tables are formed by an endless belt that limits the gap width.
  • the discharge operation of workpieces and / or waste parts from the plate-like material remaining as a residual grid can preferably be detected and monitored by a detection device, in particular by a distance sensor, a light section or a light barrier.
  • a detection device in particular by a distance sensor, a light section or a light barrier.
  • the first support table can be loaded in a loading zone with a plate-shaped material and retracted into the processing zone, the plate-shaped material preferably fixed by the clamping device in the processing zone and the first and the second support table under the plate-shaped material to form a gap be positioned below the machining head.
  • a blank sheet alone by means of the first support table can be transported from the loading zone in the processing zone, and the second support table is free for another task during this time, for example, for his return from a discharge zone for storage of the residual grid.
  • FIG. 1 shows a schematic side view of a machine tool according to the invention
  • FIG. 2 shows a perspective view of the machine tool according to FIG. 1 without loading and unloading zone
  • FIG. 3 shows a perspective view in partial section of the machine tool according to FIG. 2,
  • FIG. 4 shows a schematically enlarged view of the workpiece support of the machine tool according to FIG. 1,
  • FIGS. 5a to 5c show schematic side views, which represent successive steps for discharging a workpiece
  • FIG. 6 shows a schematic side view of an alternative embodiment of a workpiece support for FIG. 4,
  • FIG. 7 shows a perspective view of a machine tool according to FIG. 1 in a first alternative working step
  • FIG. 8 shows a perspective view of the machine tool according to FIG. 1 in a further alternative working step.
  • the laser cutting machine has a CO 2 laser or solid-state laser as laser beam generator 12, which guides a laser beam over a machining head 13 onto a workpiece support 14. On this workpiece support 14, a plate-shaped material 15 is arranged.
  • a laser beam 16 ( Figure 4) is generated. This laser beam 16 is guided by means of deflecting mirrors, not shown, of the CO 2 laser or by means of a fiber optic cable, not shown, from the solid-state laser to the processing head 13.
  • the laser beam 16 is directed onto the plate-shaped material 15 by means of a focusing device arranged in the processing head 13.
  • the laser processing machine 11 is also supplied with cutting gases 17, for example with oxygen and nitrogen. Alternatively or additionally, compressed air or application-specific gases may be provided. The use of the individual gases depends on the material of the plate-shaped material 15 to be processed and on the quality requirements for the cut edges.
  • a suction device 18 is present, which is connected to a suction chamber 19, which is located under the workpiece support 14 ( Figure 3).
  • the material of the plate-shaped material 15 is melted and largely oxidized.
  • inert gases such as nitrogen or argon, the material is merely melted.
  • the resulting melt particles are then optionally blown together with the iron oxides and sucked together with the cutting gas through the suction chamber 19 via the suction device 18.
  • This laser processing machine 11 has on a base body 22 adjacent to a loading zone 24 with a loading device 25 and a discharge zone 26 with an unloading 27 on.
  • FIG. 2 shows a perspective view of the laser cutting machine 11 is enlarged without loading and unloading zone 24, 26 shown.
  • FIG. 3 shows this laser cutting machine 11 according to FIG. 2 in a partial section, so that the components arranged in the base body 22 of the processing machine 11 can be seen more clearly.
  • processing heads 13 instead of only one, for example, two processing heads 13 are provided, which are movable over a common linear device 29 in the X direction along a processing area 30.
  • the processing area 30 is formed over the size of the frame of the main body 22 or the travel range of the linear unit 29 is determined.
  • the linear device 29 has a linear axis in order to move the two processing heads 13 independently in and counter to the Y direction.
  • the workpiece support 14 comprises a first and a second support table 31, 32, which are movable independently of one another in and counter to the X direction.
  • the support tables 31, 32 each have deflection rollers 33, 34 which are arranged fixedly to one another and which receive an endless belt as support element 35. Between the guide rollers 33, 34 is formed by the support member 35, a first support surface 38 for the first support table 31 and a second support surface 39 for the second support table.
  • the respective rollers 33 of the support tables 31, 32 are associated with each other and form a gap 36, the gap width 37 is adjustable due to the independently movable support tables 31, 32 in the width and in the position within the processing area 30.
  • One or both deflection rollers 33, 34 are driven, so that the support element 35 can be selectively driven in and against the X direction.
  • the support tables 31, 32 may alternatively also have rollers, rollers or brushes as support elements 35. These support elements can also be designed both driven and not driven.
  • a discharge element 41 is arranged, which comprises a support surface 42.
  • This discharge element 41 is preferably formed in analogy to the support tables 31, 32 and has a driven support element 35 in the form of a circulating belt.
  • the discharge element 41 is shown in FIGS. 2 and 3 in a rest position 44. In a working position 45, the discharge element can be positioned below the gap 36, as shown in FIG.
  • the discharge element 41 preferably extends over the width of the processing region 30 or is preferably formed in the width corresponding to the support tables 31, 32.
  • a smaller width is provided to accommodate the discharge element 41 within a movable frame of the support tables 31, 32, so that the discharge element 41 as an extension for extending the support surface 38, 39 of the support tables 31, 32 can be arranged, for example, a gap 36th to bridge and on the other hand in the direction loading and / or unloading zone 24, 26 to be moved and to form an extension.
  • a removal device 47 in particular as a longitudinal conveyor belt, is provided at the bottom of the base body 22, which extends along the processing region 30.
  • This longitudinal conveyor belt serves to receive through the cutting gap 36 through falling waste parts, such as slugs, inner contours or other blends. It is provided for this case no entrained under the cutting gap and closed beam-catching device.
  • a movement unit coupled to the linear device 29 is preferably provided, through which a suction device 48 is carried.
  • This suction device 38 preferably has a so-called suction hood, which is part of the suction chamber 19 or forms the suction chamber 19, which is in communication with the suction device 18.
  • at least one bulkhead plate 50 is provided adjacent to the gap 36 and, in particular, adjustably to the position and / or width of the gap 36, by which a shielding of the space extending downwards into the base body 22 at the gap 36 is formed. This allows targeted extraction of cutting gas, burn-off and the like.
  • This partition plate 50 is preferably arranged at a distance from the underside of the support tables 31, 32, so that the discharge element 41 can be moved between the underside of the support tables 31, 32 and the partition plate 50.
  • the partition plate 50 can also be arranged such that it can move in the Z direction in order to directly form a connection on the underside of the support tables 31, 32, provided the discharge element 41 is arranged in a rest position 44.
  • the suction device 48 can also be designed as a trough-shaped line or point catcher and be coupled in a coupled manner to one of the support tables 31, 32.
  • the discharge element 41 preferably has a conveying direction in the X direction in order to remove the workpieces 21 (FIG. 3) or waste parts falling through the gap 36.
  • a removal belt 52 is preferably provided, through which the workpieces 21 and / or waste parts from the base body 22 of the laser cutting machine 11 are conveyed out.
  • the plate-shaped material 15 is preferably fixed to the processing area 30 via a clamping device 55 attached to the machine body 22.
  • the support table 31 can be loaded in the loading zone 24 by the loading device 25 with a plate-shaped material 15. Subsequently, this support table 31 moves into the processing area 30, and the plate-shaped material 15 is held fixed by the clamping device 55, so that this rests selectively on only one or both support tables 31, 32.
  • the clamping device 55 is movably arranged within the processing area 30, so that if necessary a traversing movement of the plate-shaped material 15 on the support table 31 can be controlled.
  • Such a laser cutting machine 11 allows a reaction-free separation and free cutting of workpieces 21 and a targeted disposal of workpieces down, whereby a high quality of the workpiece and a reduction of the work cycles for the production of workpieces are possible.
  • the discharge of workpieces 21 through the gap 36 downwards is discussed in principle with reference to Figures 4 and 5.
  • FIG. 4 shows a machining position of the machining head 13 in the machining area 30, in which the plate-shaped material 15 is processed by the cutting beam 16 for producing a workpiece 21.
  • a movement of the discharge element 41 below the gap 36 so that it extends completely below the gap width 37.
  • the support tables 31, 32 are preferably moved apart synchronously, so that the gap 36 widens continuously.
  • the support elements 35 can be driven accordingly, so that without friction between the underside of the workpiece 21 and the support element 35 a movement apart of the support tables 31 is made possible, especially when using an endless belt as a support element 35.
  • a rack and pinion Pinion gear provided, which allows such a drive. If the gap 36 should not be arranged centrally to the workpiece 21 or an asymmetrical geometry of the workpiece 31 is provided, an asynchronous movement of the support tables 31, 32 can also take place.
  • the targeted gap widening leads to outer edges 57 of the workpiece 21 being guided simultaneously along the guide rollers 33 through the gap 36, so that the workpiece 21 is placed on the exclusion element 41 in a horizontal orientation, as shown in FIG. 5 c.
  • targeted and tilt-free transfer of the workpiece 21 from the support tables 31, 32 to the exclusion element 41 can take place. This increases the process reliability.
  • the discharged workpiece 21 After the discharged workpiece 21 has been picked up by the discharge element 41, it is transported away and, for example, transferred to the removal belt 52 in order to be discharged further.
  • FIG 6 an alternative embodiment of the support tables 31, 32 is shown to the above embodiment.
  • additional gap limiting elements 59 are provided, which are fixedly coupled to the support tables 31, 32 and / or optionally driven driven even in the X direction.
  • the gap limiting elements 59 can be listed as chamfered edges, so that these chamfered edges allow the same discharge operation, as described in Figures 5a to 5c.
  • Such Ausschleuskanten are preferably formed of temperature-resistant material.
  • deflection rollers may be provided instead of bevelled edges. Because these deflecting rollers, which are preferably made of temperature-resistant material, are associated with the gap, the support elements 35 formed as an endless belt are protected.
  • This first processing cycle comprises a discharge of waste parts and workpieces 21 through the gap 36 down and a lead out a residual grid 61 in the discharge zone 26th
  • the loading device 25 has, for example, a suction pad system 63 (FIG. 1) through which the plate-shaped material 15 is removed from the stack 64 and lifted. Subsequently, the support table 31 is moved into the loading zone 24, so that the suction pad system 63 can deposit the plate-shaped material 15 on the support table 31. Subsequently, the support table 31 is moved into the processing area 30, wherein additionally the support elements 35 of the support tables 31, 32 can be driven, so that the plate-shaped material 15 comes to rest on both support tables 31, 32 and is positioned to the clamping device 55.
  • a suction pad system 63 FIG. 1
  • the clamping device 55 may be movable and moved relative to the support table 31, so that subsequently the plate-shaped material 15 is gripped by the clamping device 55 and positioned on the clamping device 55 in the processing area 30.
  • the contact element 35 formed as an endless belt of the support tables 31, 32 can in turn be driven.
  • the support tables 31, 32 are moved to move the gap 36, so that a non-reactive gap region 37 is formed, which is positioned below the separation point.
  • Between the drives for the support tables 31, 32 and the linear device 49 may be provided a coupling.
  • the workpiece 21 is discharged downwards through the gap 36.
  • this is then removed, separated from the waste parts, by the discharge element 41.
  • the gap 36 can be widened, in the form that the gap width is greater than the maximum width of the workpiece 21 so that it can fall down through.
  • a separate part drawer can also be arranged.
  • the workpiece 21 may alternatively be conveyed out of the base body 22 of the processing machine 11 via the removal belt 47.
  • the subsequent processing cycle for producing a further workpiece 21 begins.
  • this can be transferred as a whole by moving the further support table 32 or by driven movement of the endless belt 35 into the unloading zone 36, so that the rest grid 61 is transferred as a whole into the removal device 27.
  • comminution of the residual grid can also take place before removal of the residual grid 61 so that it can be transferred into smaller containers.
  • the drop height can be reduced by scissor lift tables and the stack height can be tracked.
  • the removal device may comprise a plurality of receiving devices, so that the skeleton 61 can be recycled sorted into the camp.
  • a loading process can in turn be started, so that the processing-free times are reduced.
  • An alternative embodiment of the method described above provides that the residual grid is not transferred into the unloading zone 26, but cut or crushed and also disposed through the gap 36 down.
  • This alternative method comprises the above method steps, wherein prior to complete free cutting of the workpiece 21, a region of the residual grid 61 surrounding the workpiece 21 is preferably comminuted by the laser beam 16 and disposed of separately or together with the further waste parts through the gap 36.
  • a special gap width can be adjustable, which is different from the size of the workpiece 21, in order to avoid snagging.
  • workpieces 21 are preferably provided in a workpiece size, in which a discharge of the workpieces 21 is made possible through the gap 36 down.
  • workpieces may be provided which have a size of less than or equal to 500 x 500 mm.
  • the following alternative process cycle can be carried out with the laser cutting machine 11, which is explained with reference to FIGS. 7 and 8.
  • a plate-shaped material 15 is transferred to the support table 31. Subsequently, the support table 31 is retracted into the processing area 30.
  • the plate-shaped material 15 is gripped and fixed by a clamping device 55 mounted on one of the two or on both longitudinal sides of the machine and positioned in the processing area 30.
  • a clamping device 55 mounted on one of the two or on both longitudinal sides of the machine and positioned in the processing area 30.
  • a strip-shaped working takes place across the width of the plate-shaped material in order to introduce the corresponding contours.
  • the optionally resulting waste parts, such as inner contours, blends or the like, are discharged, for example, after the strip-like processing down through the gap 36.
  • the support tables 31, 32 are lowered, for example with respect to the clamping device 55 down.
  • the produced workpieces 21 rest on the support table or tables 31, 32 and emerge from the residual grid 61.
  • the support element 41 can be extended in the direction loading zone, so that the one or more resting on the support table 31 workpieces are transferred to the discharge element 41 and stored from there on, for example, a pallet, which is supported by the unloading 27.
  • the support table 31 may also deposit the workpieces 21 directly on a pallet or the like, or move the workpieces 21 to the unloading device 27 to deposit the workpieces 21 directly on a pallet received there. Subsequently, the bearing surface 39 of the second support table 32 can be returned to the original working plane to receive the skeleton 61 so that this skeleton 61 is transferred to the unloading zone 26. Should a storage of the residual grid 61 in the unloading zone not be desired, the skeleton grid 61 can also be cut and disposed of through the gap 36 downwards.
  • the reception of the residual grid 61 by the second support table 32 can take place simultaneously with the loading of the first support table 31 with a new plate-shaped material 15 to be processed.
  • a particularly great saving of time is achieved when unloading of the workpiece 21 to the loading device 25 takes place via the discharge element 41, wherein it preferably has both the suction pad system 63 and resting thereon, for example, a pallet for receiving the produced workpiece 21, whereby by a simple movement both a loading and a discharge function is given. This allows a process-optimized automation for the production of such workpieces are made possible.
  • a detection device for checking the discharge of the workpiece parts can be used from the skeletal grid in addition. This check can be done, for example, by a distance measurement from above using the commonly available capacitance distance sensor system or by means of a laser triangulation sensor or another distance measuring method.
  • a light barrier can be arranged below the workpiece support 14, in particular between the upper side and the lower side of the support element 35.
  • process steps can be controlled, which favor the release of the parts. This may be table movements, direct mechanical action on the entangled part, for example by means of a pneumatic actuator, the excitation by the cutting gas pressure or a combination of such measures.
  • the sensors can also be used for mis-cut detection. Round workpieces 21 have almost no risk of entanglement, so that it is an indication of a miscut when such parts are detected in the skeleton 61.
  • a nozzle cleaning cycle or a sierlinsen- or head change cycle can then be started to correct.
  • the machining program is interrupted to avoid the production of rejects.
  • the clamping device 55 In order to increase the dynamics of such laser processing machines 11, it is possible to drive the clamping device 55 also motor and move the workpiece 21 relative to the machining head 13 in the X direction by a movement of the clamping device 55.
  • the driven support elements 35 of the support tables 31, 32 can carry the movement of the workpieces 21 without scratching. In this way one achieves a superimposed motion which cumulatively enables a higher machine dynamics in the X-direction.
  • the above-described embodiments for the automation of the laser processing cutting machine 11 according to the invention enable the flexible choice of the material flow direction and the optimal space utilization of the collision area of the support tables 31, 32 projecting from the machine tool.
  • the linear material flow minimizes the non-productive times when changing materials.
  • the axes of movement of the support tables 31, 32 can be extended to a fully automated system with the same footprint. Workpieces with a wide variety of sizes, weights and geometries can be handled since no grippers are required for the handling device.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Laser Beam Processing (AREA)

Abstract

L'invention concerne une machine-outil (11) et un procédé permettant de produire des pièces à l'aide de ladite machine-outil, en particulier d'une machine d'usinage au laser. Ladite machine-outil comprend un porte-pièces (14) recevant des matériaux en forme de plaque (15) destinés à l'usinage par un dispositif de coupe doté d'une tête d'usinage (13) pouvant être déplacée dans le matériau en forme de plaque (6) au moins dans la direction Y pendant une opération de coupe. Le porte-pièces (14) comprend une première table d'appui (31) dotée d'une première surface d'appui (38) et une deuxième table d'appui (32) dotée d'une deuxième surface s'appui (39), les surfaces d'appui (38, 39) étant à distance l'une de l'autre pour former une fente (36) au-dessous de la tête d'usinage (13). La position de la fente (36) et la largeur (37) de cette dernière dans la zone d'usinage (30) de l'opération de coupe peuvent être ajustées l'une par rapport à l'autre dans la direction X par le positionnement des tables d'appui (31, 32). Une commande (20) commande un mouvement de déplacement des tables d'appui (31, 32), de sorte que la largeur (37) de fente entre les tables d'appui (31, 32) peut être ajustée à une valeur adaptée à la grandeur d'une pièce (21) ou d'une chute à évacuer vers le bas en passant par la fente (36) située entre les tables d'appui (31, 32).
PCT/EP2012/068282 2011-10-10 2012-09-18 Machine-outil et procédé de production de pièces WO2013053569A1 (fr)

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DE102011054360.0A DE102011054360B4 (de) 2011-10-10 2011-10-10 Werkzeugmaschine und Verfahren zur Herstellung von Werkstücken

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CN108788494A (zh) * 2018-08-17 2018-11-13 苏州新代数控设备有限公司 一种下料装置以及基于该装置的料带粘连快速检测方法
US10220475B2 (en) 2013-12-20 2019-03-05 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Machines for the separative machining of plate-shaped workpieces
US10232467B2 (en) 2013-12-20 2019-03-19 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Machines for the separative machining of plate-shaped workpieces
CN110774008A (zh) * 2019-11-02 2020-02-11 绍兴市上虞区成达机械科技有限公司 一种晶体生长炉机架的自动化生产线
US10722978B2 (en) 2015-03-13 2020-07-28 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Machine for separative machining of plate-shaped work pieces
US11229980B2 (en) 2013-12-20 2022-01-25 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Machines for the separative machining of plate-shaped workpieces
CN114103247A (zh) * 2021-11-22 2022-03-01 浙江中包派克包装有限公司 一种旋转裁切的瓦楞纸板裁切机
CN114101935A (zh) * 2021-12-24 2022-03-01 安徽同兴科技发展有限责任公司 一种用于板材加工的激光切割机
US11294358B2 (en) 2017-09-05 2022-04-05 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Indoor location system with energy consumption controlled mobile transceiver units
CN114406680A (zh) * 2022-01-18 2022-04-29 昆山扬煜精密组件有限公司 端子移植自动焊接装置
US11356811B2 (en) 2018-04-26 2022-06-07 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Indoor location systems for industrial production
US11429084B2 (en) 2017-09-05 2022-08-30 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Assisted assigning of a workpiece to a mobile unit of an indoor location system
CN115446652A (zh) * 2022-09-30 2022-12-09 吉林工程技术师范学院 一种数控机床加工用废料清理装置
US11635297B2 (en) 2017-09-05 2023-04-25 TRUMPF Werkzeugmaschinen SE + Co. KG Image-supported assignment of a processing plan to a mobile unit data set of a mobile unit of an indoor location system
CN118046242A (zh) * 2024-04-15 2024-05-17 大连富地重工机械制造有限公司 一种分切板料分离钳

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US10220475B2 (en) 2013-12-20 2019-03-05 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Machines for the separative machining of plate-shaped workpieces
US10232467B2 (en) 2013-12-20 2019-03-19 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Machines for the separative machining of plate-shaped workpieces
US11229980B2 (en) 2013-12-20 2022-01-25 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Machines for the separative machining of plate-shaped workpieces
US10722978B2 (en) 2015-03-13 2020-07-28 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Machine for separative machining of plate-shaped work pieces
US11294358B2 (en) 2017-09-05 2022-04-05 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Indoor location system with energy consumption controlled mobile transceiver units
US11635297B2 (en) 2017-09-05 2023-04-25 TRUMPF Werkzeugmaschinen SE + Co. KG Image-supported assignment of a processing plan to a mobile unit data set of a mobile unit of an indoor location system
US11429084B2 (en) 2017-09-05 2022-08-30 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Assisted assigning of a workpiece to a mobile unit of an indoor location system
US11356811B2 (en) 2018-04-26 2022-06-07 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Indoor location systems for industrial production
CN108788494A (zh) * 2018-08-17 2018-11-13 苏州新代数控设备有限公司 一种下料装置以及基于该装置的料带粘连快速检测方法
CN108788494B (zh) * 2018-08-17 2024-06-07 新代科技(苏州)有限公司 一种下料装置以及基于该装置的料带粘连快速检测方法
CN110774008A (zh) * 2019-11-02 2020-02-11 绍兴市上虞区成达机械科技有限公司 一种晶体生长炉机架的自动化生产线
CN114103247A (zh) * 2021-11-22 2022-03-01 浙江中包派克包装有限公司 一种旋转裁切的瓦楞纸板裁切机
CN114103247B (zh) * 2021-11-22 2023-12-26 浙江中包派克包装有限公司 一种旋转裁切的瓦楞纸板裁切机
CN114101935A (zh) * 2021-12-24 2022-03-01 安徽同兴科技发展有限责任公司 一种用于板材加工的激光切割机
CN114406680A (zh) * 2022-01-18 2022-04-29 昆山扬煜精密组件有限公司 端子移植自动焊接装置
CN115446652A (zh) * 2022-09-30 2022-12-09 吉林工程技术师范学院 一种数控机床加工用废料清理装置
CN115446652B (zh) * 2022-09-30 2024-01-26 吉林工程技术师范学院 一种数控机床加工用废料清理装置
CN118046242A (zh) * 2024-04-15 2024-05-17 大连富地重工机械制造有限公司 一种分切板料分离钳

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