WO2020057951A1 - Verfahren zur schneidenden bearbeitung von rohren in einer laserrohrschneidmaschine sowie laserrohrschneidmaschine - Google Patents

Verfahren zur schneidenden bearbeitung von rohren in einer laserrohrschneidmaschine sowie laserrohrschneidmaschine Download PDF

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Publication number
WO2020057951A1
WO2020057951A1 PCT/EP2019/073323 EP2019073323W WO2020057951A1 WO 2020057951 A1 WO2020057951 A1 WO 2020057951A1 EP 2019073323 W EP2019073323 W EP 2019073323W WO 2020057951 A1 WO2020057951 A1 WO 2020057951A1
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WO
WIPO (PCT)
Prior art keywords
tube
holder
counter
laser
tool
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.)
Ceased
Application number
PCT/EP2019/073323
Other languages
German (de)
English (en)
French (fr)
Inventor
Karsten Ruetz
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
Application filed by Trumpf Werkzeugmaschinen SE and Co KG filed Critical Trumpf Werkzeugmaschinen SE and Co KG
Priority to JP2021510324A priority Critical patent/JP2022500248A/ja
Priority to CN201980060731.6A priority patent/CN113195147B/zh
Priority to EP19762372.1A priority patent/EP3852965B1/de
Priority to US17/268,629 priority patent/US12151304B2/en
Publication of WO2020057951A1 publication Critical patent/WO2020057951A1/de
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
    • B23P23/02—Machine tools for performing different machining operations
    • 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
    • B23K26/0093—Working by laser beam, e.g. welding, cutting or boring combined with mechanical machining or metal-working covered by other subclasses than B23K
    • 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
    • B23K26/0823—Devices involving rotation of the workpiece
    • 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
    • B23K26/0853—Devices involving movement of the workpiece in at least two axial directions, e.g. in a plane
    • B23K26/0861—Devices involving movement of the workpiece in at least two axial directions, e.g. in a plane in at least three axial directions
    • 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 for a procedure covered by only one of the other main groups of this subclass
    • B23K37/04—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work
    • B23K37/0426—Fixtures for other work
    • B23K37/0435—Clamps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/72—Auxiliary arrangements; Interconnections between auxiliary tables and movable machine elements
    • B23Q1/76—Steadies; Rests
    • B23Q1/766—Steadies or rests moving together with the tool support

Definitions

  • the invention relates to a method for cutting tubes in a laser tube cutting machine and a laser tube cutting machine, in particular for carrying out the method.
  • DE 10 2016 106 067 A1 discloses a laser tube cutting machine and a method for cutting tubes in such a laser tube cutting machine.
  • This laser tube cutting machine comprises a workpiece movement device, by means of which a tube to be machined is held and moved relative to a push-through device supporting the tube.
  • a laser processing device is provided adjacent to the push-through device in a processing room. This includes a processing head through which a laser beam is directed onto the tube.
  • a tool holder is also provided in the processing space adjacent to the laser processing device in order to hold a tool for mechanical processing of the tube. This tool is moved in a movement axis perpendicular to the longitudinal axis of the tube, along which it can be moved relative to the push-through device, towards the tube for mechanical processing.
  • clamping jaws of the push-through device During the processing of the pipe, this is held by clamping jaws of the push-through device.
  • These clamping jaws have a flexibility when a preset clamping force is exceeded, which is not exceeded during laser processing, since there are no forces to be absorbed by the push-through device.
  • higher forces can occur which exceed the preset clamping force of the clamping jaws.
  • the tube can be misaligned within the push-through device and impair or make mechanical processing impossible.
  • a processing device for processing pipes is provided from EP 2 548 691 A1.
  • This processing device comprises a catching lance with a collecting opening, which is inserted into the pipe to be processed when the pipe is being processed and the collecting opening of the catching lance is positioned below the processing point.
  • a workpiece support is provided from DE 10 2016 104 107 A1, which is positioned in a processing machine for cutting tubes by cutting between a workpiece movement device for receiving and displacing the tube and a push-through device.
  • An analog device emerges from CN 203621737 U.
  • a device for clamping workpieces which is provided for a workpiece movement device, which receives a pipe to be machined and through which the pipe to be machined can be moved relative to a push-through device.
  • JP 62-173 129 A discloses a machine for machining pipes.
  • This clamping device has a chuck through which the tube is firmly clamped. Any lateral force that occurs due to mechanical processing is absorbed by the clamping force of the chuck.
  • a vibration damping device is additionally brought to bear on an inside of the tube in order to increase the processing quality.
  • the invention is based on the object of proposing a method for processing tubes in a laser tube cutting machine and a laser tube cutting machine, as a result of which an additional mechanical processing of the tube with a tool in addition to laser processing is made possible.
  • a method for cutting tubes in a laser tube cutting machine in which the tube is mechanically machined with a tool in addition to laser machining and at least one counterholder moves with the tool into a working position for abutment against the tube before mechanical machining of the tube begins becomes.
  • This counter holder which can be moved into the working position, can be used to support the tube, which counteracts the force introduction by the tool during mechanical processing.
  • the counter holder can absorb forces that cannot be absorbed by the clamping jaws of the push-through device.
  • both removal or cutting processing of the tube by means of the laser beam and mechanical processing of the tube with the at least one tool can take place in succession. Processes such as machining, flow drilling, furrowing, broaching, grinding, brushing, thread cutting or the like can preferably be carried out.
  • the at least one counterholder is held stationary in the working position. Regardless of the force applied by the tool to the pipe, the counterholder absorbs the forces during mechanical processing without there being any flexibility.
  • Another preferred embodiment of the method provides that the counter-holder is brought into the working position for bearing against an outside of the tube. This enables easy feeding from the outside into the working position and into a distant rest position when not in use.
  • the tool for mechanical processing of the pipe is fed from the outside against the pipe.
  • the counterholder and the machining forces from the tool act on the tube from the outside during mechanical machining.
  • Another preferred embodiment of the method provides that the counter-holder is positioned remotely from the tube in a rest position during laser processing of the tube and is transferred to the working position of the system with the tool before the mechanical processing of the tube. This prevents any possible contamination of the counter holder against erosion, slag or the like during laser cutting.
  • a counter-holder which at least counteracts the uniaxial force application is preferably moved into the working position.
  • the pipe can be machined without misalignment.
  • the counter holder can directly absorb the reaction force of the pipe.
  • the counter-holder and the tool are preferably moved in the same axis of movement.
  • this axis of movement is perpendicular to the longitudinal axis of the tube.
  • a counterholder with a gripping device additionally provided on the counterholder is preferably moved into the working position for the pipe.
  • the counter-holder preferably counteracts a first direction of the application of force by the tool.
  • the gripping device preferably counteracts a second direction of force application perpendicular to the first force application direction of the tool, so that the tube is secured by the counter-holder and the gripping device against deflection in two axes - that is, against the first and second force application directions.
  • the first direction of force application and the second direction of force application are preferably oriented perpendicular to the longitudinal axis of the tube.
  • a further preferred embodiment of the method provides that the counter-holder and / or the gripping device each comprise at least one pressure piece. This enables a secure system and absorption of the reaction force during mechanical processing by the tool.
  • the gripping device has two opposing thrust pieces which are moved in opposite directions towards one another into the working position for abutment on the outside of the tube. This enables a clamping function to be exerted on the pipe in order to secure the starting position of the pipe defined by the push-through device for the subsequent mechanical processing.
  • the pressure piece has a punctiform, sheet-like or linear support.
  • pressure pieces rolling on the counter-holder and / or the gripping device can be transferred to bear against the pipe.
  • These rolling pressure pieces which can be formed by rollers, balls, rollers or the like, are used in particular in mechanical processing of the tube, in which a movement of the tube along its longitudinal axis is additionally superimposed.
  • a laser tube cutting machine for cutting tubes which comprises a workpiece support device which receives the tube and moves relative to a slide-through device supporting the tube, which guides the tube by means of clamping jaws of the slide-through device and with a laser processing device, which has a machining head which directs a laser beam emerging from the machining head onto the tube and with at least one additional tool for mechanical machining of the tube, which can be moved in at least one direction of movement relative to the tube, at least one counterholder being movable into a working position for bearing against the tube is, which acts opposite to the direction of force application of the tool.
  • the counter-holder preferably has a drive which transfers the counter-holder into the working position and a rest position.
  • the counter holder can be positioned as required to support and support the pipe.
  • the counterholder is moved to the tube in a rest position.
  • the drive can comprise a pneumatic or hydraulic cylinder, an electric linear drive or the like for controlling the movement.
  • the drive can also have an integrated side guide.
  • the drive can also be clamped or secured in an extended position.
  • the counter-holder thus forms a fixed, non-compliant abutment.
  • the counterholder preferably has at least one pressure piece, which has a punctiform, linear, flat or rolling support.
  • the design of the pressure pieces can also depend on the geometry of the pipes.
  • the pressure piece preferably consists of an elastic material. This enables a scratch-free positioning of the counter holder on the pipe to be machined.
  • the counter-holder can additionally have a gripping device which, in contrast to the counter-holder, which absorbs a first reaction force, counteracts a second reaction force.
  • a gripping device which, in contrast to the counter-holder, which absorbs a first reaction force, counteracts a second reaction force.
  • the gripping device for receiving the second reaction force of the tube preferably acts perpendicular to the counter-holder, which absorbs the first reaction force.
  • two opposing thrust pieces are preferably provided, which can be positioned relative to the tube with a clamping force acting on the tube.
  • this enables simple adaptation to different cross sections of the pipe to be machined.
  • a sufficient clamping force can be applied via the gripping device without the tube being deformed as a result.
  • the pressure pieces of the gripping device can preferably be movable with a drive.
  • This drive can be sensor-controlled, so that a clamping force coordinated by the tube can be set.
  • FIG. 1 shows a perspective view of a laser tube cutting machine
  • FIG. 2 shows a schematic side view of a push-through device with a mechanical tool and a counterholder
  • FIG. 3 shows a schematic view from above of the push-through device according to FIG. 2,
  • Figure 4 is a schematic side view of an alternative embodiment of the counterholder to Figure 2
  • FIG. 5 shows a schematic side view of a further alternative embodiment of the counter-holder to FIG. 2.
  • a laser tube cutting machine 1 is shown schematically simplified.
  • This laser tube cutting machine 1 is provided for cutting workpieces 2, the workpieces 2 being rod-shaped, in particular tubular. Profiles are also to be understood as rod-shaped.
  • This laser tube cutting machine 1 comprises a feed device 3 for the lateral feed of the tube 2 to be cut to the laser tube cutting machine 1, for example by a loading device 19.
  • This feed device 3 feeds the tube 2 to be cut to a processing space 20.
  • the tube is processed by a laser processing device 24 for laser cutting the tube 2, in particular rod sections or tube parts and / or by a processing device 4, for mechanical processing with a tool 33.
  • the finished tubes 2, rod sections or tube parts are picked up by an unloading device 5 and removed from the laser tube cutting machine 1. All essential functions of the laser tube cutting machine 1 are controlled with a numerical control device 6.
  • the feed device 3 comprises a rotating and feed device serving as a workpiece movement device 7 as well as a machine bed 8 with guide rails 9 and a push-through device 10.
  • the workpiece movement device 7 is motor-driven and can be moved in the feed direction 11 on the guide rails 9.
  • the pipe 2 to be fed is fixed with a clamping device 12 of the workpiece movement device 7, which can be rotated in the direction of the double arrow 13 and encompasses the pipe 2 fed from the outside and clamps it in a stationary manner.
  • the tube 2 is supported during the feed to the push-through device 10 and / or during the processing of the tube 2 by at least one workpiece support 14 integrated in the machine bed 8. In the area of the machining device 4, the workpiece 2 is guided through the push-through device 10 and supported by it.
  • the push-through device 10 is designed such that the clamped pipe 2 is guided in the feed direction and is not clamped in a stationary manner.
  • the tube 2 is rotatable in the push-through device 10 about the axis
  • the laser processing device 24 comprises a laser beam source 15 for generating a laser beam 16, a processing head 17 and a beam guide 18 which guides the laser beam 16 from the laser beam source 15 to the processing head 17.
  • the laser beam 16 emerges from the processing head 17 and is focused at a processing point F within the processing space 20 onto the outer circumferential surface of the tube 2.
  • a tool holder 21 of the machining device 4 is assigned to the machining space 20 and / or adjacent to the machining head 17 and can be moved at least within the machining space 20 by means of a guide 22 (FIG. 2), so that the tool holder 21 with a tool 33 clamped therein to the machining point F is movable and can in turn be removed from this.
  • a magazine 25 can also be provided at a distance from the processing point F.
  • This magazine 25 can be designed, for example, as a linear magazine or revolver magazine.
  • Various tools 33 such as, for example, drills, flow drills, thread cutting tools or thread forming tools, can be stored in this magazine 25.
  • the tool holder 21 is preferably movable according to the double arrow 26 shown in the Y direction at least between the magazine 25 and the machining point F. To use a linear magazine 25, the tool holder 21 can also be moved in the Z direction. Alternatively, the magazine 25 can also be moved in the Z direction.
  • the unloading device 5 On the side of the push-through device 10 facing away from the machine bed 8, the unloading device 5 is provided, which removes workpiece parts or sections cut from the tube 2 and a residual workpiece from the laser tube cutting machine 1.
  • FIG. 2 shows a schematic side view of the push-through device 10.
  • the push-through device 10 comprises a plurality of clamping jaws 34, which are resiliently received in the push-through device 10.
  • clamping jaws 34 are provided, which lie opposite one another in pairs and are arranged offset by 90 ° to one another.
  • the clamping jaws 34 can be adjustable with regard to their clamping force.
  • these clamping jaws 34 which preferably have rollers 35 which bear against the tube 2, the tube 2 can be guided for the laser cutting processing.
  • a counter holder 41 is provided in the processing space 20.
  • This counter holder 41 comprises a drive 42, by means of which a pressure piece 43 of the counter holder 41 can be transferred into a working position 46 shown in FIG. In this working position 46, the pressure piece 43 rests on an outside of the tube 2. In a rest position, not shown, the pressure piece 43 is positioned away from the tube 2. The pressure piece 43 is preferably positioned in the working position 46 and the rest position removed from it by a movement along a Y axis. This movement is controlled by the drive 42.
  • the drive 42 can be carried out by a pneumatic, hydraulic cylinder. An electrical linear drive or the like can also be provided.
  • the counter-holder 41 is activated by the control device 6.
  • the pressure piece 43 can be designed as a surface or in the form of a plate.
  • a contact surface 47 of the pressure piece 43 can preferably be formed from an elastic material, in particular from plastic, in order to avoid pressure points or scratches.
  • the pressure piece 43 can also have a circular or V-shaped edge curved in the direction of the tube 2.
  • the tool 33 is shown in FIG. 2 in a position shortly before it engages the pipe 2 for processing.
  • the tool 33 is moved along the X axis to the outside of the tube 2.
  • the counter-holder 41 counteracts this uniaxial force introduction by a first reaction force.
  • the counter-holder 41 can be fixed in the working position 46.
  • the cylinder can have an integrated clamping or locking function for this purpose.
  • FIG. 3 shows a schematic view of the push-through device 10 with the tool 33 and the counter-holder 41 positioned relative to the pipe 2.
  • the counter holder 41 engages on the outside of the tube 2.
  • the tool 33 is also fed opposite to the outside of the tube 2.
  • FIG. 4 shows a schematic side view of an alternative embodiment of the counter-holder 41.
  • this counter-holder 41 has a gripping device 51.
  • This gripping device 51 forms a second reaction force which counteracts a further direction of the force introduction, for example in the Z direction.
  • a second force application direction which is perpendicular to the first force device, can additionally be counteracted.
  • the gripping device 51 has, for example, two opposing pressure pieces 43. These opposing thrust pieces 43 can be moved towards one another with an actuator 52 in order to engage on the outside of the tube 2. This gives the thrust piece 43 as a counter-holder 41 a three-point support on the tube 2. Thus, the tube 2 can be held in a defined position when the force is applied by the tool 33 in the Y direction and in the Z direction. A force introduction by the tool 33 in the X direction is absorbed by the workpiece movement device 7, since the tube 2 is pressure and tensile stable.
  • a clamping function can be controlled by the actuator 52 of the gripping device 51. This clamping function acting on the tube 2 can be greater than the preset clamping force of the clamping jaws 34.
  • the adjustable clamping force is adapted to the inherent rigidity of the tube 2 in order to avoid deformation of the tube 2.
  • the pressure pieces 43 of the gripping device 51 can be designed analogously to the pressure piece 43 of the counter-holder 41.
  • FIG. 5 shows an alternative embodiment of the counter-holder 41 with the gripping device 51 to FIG. 4.
  • This embodiment differs in the configuration of the pressure pieces 43.
  • the pressure pieces 43 are formed in the embodiment according to FIG. 5 by rotatably mounted balls or rollers. This has the advantage that, during mechanical processing by the tool 33, the tube 2 can additionally be moved along the longitudinal axis of the tube 2, in particular in the X direction, by the workpiece movement device 7. In this way, friction-minimized guidance can be achieved.
  • non-rolling pressure pieces can be provided, which have a material with high sliding properties for support.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Laser Beam Processing (AREA)
  • Drilling And Boring (AREA)
  • Machine Tool Units (AREA)
PCT/EP2019/073323 2018-09-17 2019-09-02 Verfahren zur schneidenden bearbeitung von rohren in einer laserrohrschneidmaschine sowie laserrohrschneidmaschine Ceased WO2020057951A1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2021510324A JP2022500248A (ja) 2018-09-17 2019-09-02 レーザ管切断機における切断による管の加工方法およびレーザ管切断機
CN201980060731.6A CN113195147B (zh) 2018-09-17 2019-09-02 用于在激光切管机中通过切割来对管进行加工的方法以及激光切管机
EP19762372.1A EP3852965B1 (de) 2018-09-17 2019-09-02 Verfahren zur schneidenden bearbeitung von rohren in einer laserrohrschneidmaschine sowie laserrohrschneidmaschine
US17/268,629 US12151304B2 (en) 2018-09-17 2019-09-02 Method for processing of tubes by cutting in a laser tube cutting machine and laser tube cutting machine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018122717.5A DE102018122717A1 (de) 2018-09-17 2018-09-17 Verfahren zur schneidenden Bearbeitung von Rohren in einer Laserrohrschneidmaschine sowie Laserrohrschneidmaschine
DE102018122717.5 2018-09-17

Publications (1)

Publication Number Publication Date
WO2020057951A1 true WO2020057951A1 (de) 2020-03-26

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PCT/EP2019/073323 Ceased WO2020057951A1 (de) 2018-09-17 2019-09-02 Verfahren zur schneidenden bearbeitung von rohren in einer laserrohrschneidmaschine sowie laserrohrschneidmaschine

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US (1) US12151304B2 (https=)
EP (1) EP3852965B1 (https=)
JP (1) JP2022500248A (https=)
CN (1) CN113195147B (https=)
DE (1) DE102018122717A1 (https=)
WO (1) WO2020057951A1 (https=)

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JP2023061656A (ja) * 2021-10-20 2023-05-02 住友重機械工業株式会社 加工対象物支持装置及びレーザ加工装置
IT202200005192A1 (it) 2022-03-16 2023-09-16 Texa Dynamics S R L “Motore elettrico con componente raffreddante”
CN119748125A (zh) * 2025-01-20 2025-04-04 江苏哲雪冷链设备有限公司 一种空调压缩机主壳体冲孔整形一体化生产设备

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CN115570280A (zh) * 2022-10-24 2023-01-06 新代科技(苏州)有限公司 一种激光同动切割管材的装置及其使用方法
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CN118664126B (zh) * 2024-08-23 2024-12-13 山东布莱特威健身器材有限公司 一种健身器材配件加工用激光切割设备

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JP2022500248A (ja) 2022-01-04
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