EP2024132A1 - Laser machining machine with a device for ventilating the laser beam channels and procedure for the ventilation of laser beam channels of a laser machining machine - Google Patents
Laser machining machine with a device for ventilating the laser beam channels and procedure for the ventilation of laser beam channels of a laser machining machineInfo
- Publication number
- EP2024132A1 EP2024132A1 EP06753535A EP06753535A EP2024132A1 EP 2024132 A1 EP2024132 A1 EP 2024132A1 EP 06753535 A EP06753535 A EP 06753535A EP 06753535 A EP06753535 A EP 06753535A EP 2024132 A1 EP2024132 A1 EP 2024132A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- laser
- gas
- laser beam
- laser processing
- beam guide
- 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.)
- Withdrawn
Links
Classifications
-
- 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
- B23K26/12—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure
- B23K26/123—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure in an atmosphere of particular gases
-
- 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
- B23K26/12—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure
-
- 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
- B23K26/12—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure
- B23K26/123—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure in an atmosphere of particular gases
- B23K26/125—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure in an atmosphere of particular gases of mixed gases
-
- 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
- B23K26/12—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure
- B23K26/127—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure in an enclosure
- B23K26/128—Laser beam path enclosures
-
- 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
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
- B23K26/142—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor for the removal of by-products
-
- 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
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
- B23K26/1435—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor involving specially adapted flow control means
- B23K26/1436—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor involving specially adapted flow control means for pressure control
Definitions
- Laser processing machine with a device for aerating the laser beam guidance
- the invention relates to a laser processing machine with a device for aerating the laser beam guide and a method for aerating the laser beam guidance of a laser processing machine.
- the generic laser processing machine comprises a laser beam guide to a laser processing head, via which the laser beam guide is formed open to the workpiece.
- Such a laser processing machine has become known, for example, from EP 1 640 105 A1.
- Starting point of the invention are 3D laser processing machines with a laser processing head, as shown for example in the above-mentioned application.
- the focusing element is a mirror and the Beam guide is open to the processing point. These machines are mainly used for laser welding.
- the beam guidance requires a clean and constant atmosphere. Fluctuating CO 2 contents or other substances influencing the beam propagation or else an unequal temperature distribution over the beam cross-section change the raw beam and thus also the properties in focus, so that the constancy of the processing process deteriorates.
- the laser processing head of this laser cutting machine has no lens, which seals the beam guide to the area of the laser processing, but an open aperture for separation. Excessive pure gas also exits the beam guide through this diaphragm, but to a much lesser extent than in the laser welding system described above.
- EP 1 182 002 A1 For laser cutting machines with lens optics, it has become known from EP 1 182 002 A1 to rinse a lens on the beam guide side with very pure gas and to increase the pressure of the purge gas in the event of a pressure drop in the beam guide.
- This known beam guide is not open to the workpiece, since the lens beam guide and processing space seals against each other. Therefore, the pressure can be tracked with very pure (expensive) gas, without this leading to a serious cost disadvantage.
- the invention is based on the object of reducing a discharge of pure gas used for beam guidance ventilation in an open processing optics.
- the ventilation of the beam guide takes place with the help of two gases at two different points of the beam guidance.
- the beam guidance is divided, so to speak, into two partial gas spaces.
- the first part-gas space is supplied with a small volume flow very pure gas. It covers most of the beam-guiding space and is essentially completed.
- the first partial gas space is adjoined by a second partial gas space, which is flooded by a second gas, preferably a cost-effective one. Only a comparatively small proportion of the beam path is located in the second partial gas space, so that the disturbance of the beam propagation through the inexpensive gas is comparatively low.
- the second gas compartment may be open, e.g. at a mirror optics. Pressure fluctuations etc. are readjusted in the second partial gas space.
- Fig. 1 is a perspective view of a laser cutting machine
- Fig. 2 is a perspective view of a laser welding machine.
- a laser processing machine 1 comprises a laser generator 2 (CO 2 laser) and a relative thereto in the direction of the double arrows 3 movable laser processing head 4.
- a generated by means of the laser generator 2 laser beam 5 is passed from the laser generator 2 through a flushed with a gas jet guide space 6 to the machining head 4 and directed to this on a workpiece to be machined 7 in the form of a sheet on a workpiece support 8 of the laser processing machine. 1 is stored.
- Both piercing and laser cutting are assisted by the addition of a gas.
- a gas As cutting gases 9 oxygen, nitrogen, compressed air and / or application-specific gases can be used. Which gas is ultimately used depends on which materials are cut and what quality requirements are placed on the workpiece.
- Cutting gas is supplied in the processing head in the vicinity of the processing point.
- the beam guiding space 6 is substantially filled with pure gas, eg nitrogen.
- the beam guiding space 6 is a bellows or other hermetic conclusion (also a tube, telescopic tube
- the laser beam 5 is deflected and focused within the laser processing head 4, so that a focused laser beam is directed onto the workpiece.
- a housing region of the laser processing head 4 assigned to the beam guide 6 is separated from a housing region assigned to the laser processing.
- Such a laser processing head has become known from EP 1 623 790 A1.
- the laser beam 5 is passed through an intermediate focus.
- the components of the laser processing head 4 used for this purpose are formed by a focusing paraboloid mirror and an ellipsoidal mirror. In the intermediate focus between the two lenses and a screen is attached, through which the laser beam 5 passes.
- Such processing optics leads to an open beam guidance system.
- the diameter of the aperture is chosen so large that the laser beam at its Edge does not touch, and so small that the leakage loss of purge gas of the beam guide is low.
- pure gas is injected at a pressure of 1.1 bar at a first gas inlet 10 directly behind the laser generator.
- a second gas inlet 11 is provided directly in front of the laser processing head 4 in the beam guide 6.
- the almost entire beam guide 6 is aerated with pure gas, so that a widening of the laser beam 5 is prevented.
- purified air is injected transversely to the pure gas stream.
- the end of the beam guide 6 and the laser cutting head 4 are aerated with purified air.
- the gas-air mixture can escape via the nozzle opening.
- a pressure relief valve 12 and a gas compensation volume 13 are provided.
- a machine frame carries the moving unit of the machine and the Beam guiding system with deflecting mirrors for a laser beam 105 generated in the laser 102.
- a laser welding head 104 with a deflecting mirror and a focusing mirror is movable over two axes of rotation and in three directions in order to be able to optimally machine a weld seam for joining two components 107 and 107 'arranged on a support.
- the components 107 and 107 ' are fixed by means of a clamping device.
- process gases working gas, protective gas
- a beam guiding space 106 is substantially filled with pure gas, e.g. Nitrogen, filled.
- the beam guiding space 106 is bounded by a bellows or other hermetic seal (also a tube, telescopic tube, etc.).
- pure gas is injected at a first gas inlet 111 directly behind the laser generator 102 at a pressure of 1.1 bar.
- a second gas inlet 112 is provided directly in front of the laser processing head 104 in the beam guide 106.
- the almost entire beam guide 106 is aerated with pure gas, so that a widening of the laser beam 105 is prevented.
- purified air is injected transversely to the pure gas stream.
- the end of the beam guide 106 and the laser welding head 104 are aerated with clean air.
- the gas-air mixture can escape via the nozzle opening.
- the pressure under which the pure gas (nitrogen) is relatively high, while the air pressure of the blown in the vicinity of the laser processing head 4, 104 air is relatively low.
- the volume flow of the pure gas is relatively small (of course, also some pure gas escapes through the processing head 104, but comparatively little) and that of the cleaned air escapes comparatively high.
Abstract
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2006/004338 WO2007128333A1 (en) | 2006-05-09 | 2006-05-09 | Laser machining machine with a device for ventilating the laser beam channels and procedure for the ventilation of laser beam channels of a laser machining machine |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2024132A1 true EP2024132A1 (en) | 2009-02-18 |
Family
ID=37649298
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06753535A Withdrawn EP2024132A1 (en) | 2006-05-09 | 2006-05-09 | Laser machining machine with a device for ventilating the laser beam channels and procedure for the ventilation of laser beam channels of a laser machining machine |
Country Status (4)
Country | Link |
---|---|
US (1) | US8203098B2 (en) |
EP (1) | EP2024132A1 (en) |
CN (1) | CN101443154B (en) |
WO (1) | WO2007128333A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2956337B1 (en) * | 2010-02-16 | 2012-03-02 | Air Liquide | LASER MACHINING INSTALLATION WITH COMMON GAS SOURCE FOR OSCILLATOR AND LASER HEAD |
US8803026B2 (en) * | 2010-10-15 | 2014-08-12 | Mitsubishi Electric Corporation | Laser machining device and bellows device |
JP5132838B2 (en) * | 2010-11-29 | 2013-01-30 | 三菱電機株式会社 | Optical path structure of laser processing machine |
US10307803B2 (en) * | 2016-07-20 | 2019-06-04 | The United States Of America As Represented By Secretary Of The Navy | Transmission window cleanliness for directed energy devices |
USD870166S1 (en) * | 2016-08-31 | 2019-12-17 | Trumpf Gmbh + Co. Kg | Laser processing machine |
JP6852031B2 (en) * | 2018-09-26 | 2021-03-31 | 株式会社東芝 | Welding equipment and nozzle equipment |
DE102019103659B4 (en) * | 2019-02-13 | 2023-11-30 | Bystronic Laser Ag | Gas guide, laser cutting head and laser cutting machine |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0970682A (en) * | 1995-09-06 | 1997-03-18 | Kobe Steel Ltd | Laser welding device |
JPH1034372A (en) * | 1996-07-19 | 1998-02-10 | Sumitomo Metal Ind Ltd | Laser machining head |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3860784A (en) * | 1971-03-08 | 1975-01-14 | United Aircraft Corp | Deep penetration welding using lasers |
EP0163790A1 (en) | 1984-05-09 | 1985-12-11 | Noel E. Zeller | Mirror with holster |
JPS623894A (en) * | 1985-06-28 | 1987-01-09 | Mitsubishi Electric Corp | Dustproofing device for laser beam transmission path of laser beam machine |
US4806724A (en) * | 1986-08-15 | 1989-02-21 | Kawasaki Steel Corp. | Laser beam machining device |
DE3822097A1 (en) | 1988-06-30 | 1990-01-04 | Messer Griesheim Gmbh | Method of deflecting particles moved in the direction of the optical system of a laser nozzle |
JP3194021B2 (en) * | 1992-07-03 | 2001-07-30 | 経済産業省産業技術総合研究所長 | Laser annealing equipment |
DE4437795C2 (en) * | 1993-10-21 | 1996-12-12 | Mitsubishi Electric Corp | Processing head with main and auxiliary gas nozzles for a laser processing device and laser processing device |
JPH07164171A (en) * | 1993-12-16 | 1995-06-27 | Toshiba Corp | Laser beam machining method |
WO1995033594A1 (en) | 1994-06-06 | 1995-12-14 | Amada Company, Limited | Method and apparatus for supplying gaseous nitrogen to a laser beam machine |
DE29509648U1 (en) * | 1995-06-19 | 1995-09-14 | Trumpf Gmbh & Co | Laser processing machine with gas-filled beam guiding room |
JP3633117B2 (en) * | 1996-07-17 | 2005-03-30 | 三菱電機株式会社 | Optical scanning laser processing machine |
DE19734715A1 (en) * | 1997-08-11 | 1999-02-25 | Lambda Physik Gmbh | Device for rinsing pathway of ultraviolet laser beam |
DE29714489U1 (en) * | 1997-08-13 | 1997-10-09 | Trumpf Gmbh & Co | Laser processing machine with gas compensation volume |
DE59909654D1 (en) * | 1999-11-12 | 2004-07-08 | Werner Kluft | Method and device for measuring process parameters of a material processing process |
EP1182002B1 (en) | 2000-08-05 | 2004-03-03 | Trumpf Werkzeugmaschinen GmbH + Co. KG | Laser processing machine with at least an optical element that can be submitted to a flushing elementing medium |
EP1180409B1 (en) * | 2000-08-12 | 2005-03-30 | TRUMPF LASERTECHNIK GmbH | Laser processing machine with gas cleaned beam guiding cavity |
DE10226359B4 (en) * | 2002-06-13 | 2010-08-19 | Precitec Kg | Laser processing head for machining, in particular for cutting a workpiece by means of a laser beam |
ATE396820T1 (en) * | 2002-08-01 | 2008-06-15 | Trumpf Werkzeugmaschinen Gmbh | LASER PROCESSING MACHINE |
CN2677079Y (en) * | 2003-02-11 | 2005-02-09 | 星云电脑股份有限公司 | Laser processing machine blowing spray nozzle |
DE20306336U1 (en) * | 2003-04-22 | 2003-06-26 | Trumpf Werkzeugmaschinen Gmbh | Beam guide of a laser processing machine |
JP4335154B2 (en) * | 2003-05-20 | 2009-09-30 | 三菱電機株式会社 | Laser processing equipment |
CN1271236C (en) * | 2004-04-28 | 2006-08-23 | 华中科技大学 | Built-in type jet nozzle for laser melting and coating |
EP1623790B1 (en) * | 2004-08-06 | 2008-12-10 | Trumpf Werkzeugmaschinen GmbH + Co. KG | Laser machining head |
EP1640105A1 (en) | 2004-09-28 | 2006-03-29 | Trumpf Werkzeugmaschinen GmbH + Co. KG | Process for laser welding |
-
2006
- 2006-05-09 CN CN2006800544907A patent/CN101443154B/en active Active
- 2006-05-09 EP EP06753535A patent/EP2024132A1/en not_active Withdrawn
- 2006-05-09 WO PCT/EP2006/004338 patent/WO2007128333A1/en active Application Filing
-
2008
- 2008-11-07 US US12/267,185 patent/US8203098B2/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0970682A (en) * | 1995-09-06 | 1997-03-18 | Kobe Steel Ltd | Laser welding device |
JPH1034372A (en) * | 1996-07-19 | 1998-02-10 | Sumitomo Metal Ind Ltd | Laser machining head |
Also Published As
Publication number | Publication date |
---|---|
US8203098B2 (en) | 2012-06-19 |
CN101443154B (en) | 2012-10-24 |
WO2007128333A1 (en) | 2007-11-15 |
US20090120917A1 (en) | 2009-05-14 |
CN101443154A (en) | 2009-05-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2024132A1 (en) | Laser machining machine with a device for ventilating the laser beam channels and procedure for the ventilation of laser beam channels of a laser machining machine | |
EP2133171B1 (en) | Machine device for processing workpieces using a laser beam | |
EP0749800B1 (en) | Laser processing machine with beam guiding enclosure filled with gas | |
DE10120251B4 (en) | Method and sensor device for monitoring a laser processing operation to be performed on a workpiece and laser processing head with such a sensor device | |
DE2734759A1 (en) | LASER BEAM WELDING DEVICE | |
DE102015119324A1 (en) | Device for stripping cables | |
DE102011106506A1 (en) | Welding tool for joining at least two workpieces, welding process and workpiece | |
EP1182002B1 (en) | Laser processing machine with at least an optical element that can be submitted to a flushing elementing medium | |
EP1180409A1 (en) | Laser processing machine with gas cleaned beam guiding cavity | |
DE3513501A1 (en) | LASER WELDING MACHINE | |
DE102018217940A1 (en) | Method and processing machine for processing a workpiece | |
DE102014206358A1 (en) | Method and laser cutting machine for laser cutting small openings | |
EP1957232A1 (en) | Laser machining nozzle | |
DE10226359B4 (en) | Laser processing head for machining, in particular for cutting a workpiece by means of a laser beam | |
EP1623790B1 (en) | Laser machining head | |
EP2699379A2 (en) | Laser beam welding device and laser beam welding method | |
DE19545713C2 (en) | Method and device for butt welding two sheets or strips | |
DE102015006421B4 (en) | Process for joining components | |
DE102022129569A1 (en) | LASER PROCESSING HEAD WITH WIDE RANGE ZOOM AND ITS USE IN A LASER MATERIAL PROCESSING PROCESS | |
DE102022002922A1 (en) | Laser welding device and method for monitoring a laser welding process | |
DE102015013847A1 (en) | Laser welding equipment | |
DE102017219424A1 (en) | Method for determining an oxygen purity in laser cutting, and laser processing machine and computer program product | |
DE102020110087A1 (en) | PROCESS FOR PROCESS CONTROL IN LASER MATERIAL PROCESSING | |
DE102006018858B4 (en) | Process for plasma cutting | |
DE10129430C1 (en) | Laser beam welding unit has direction-controlled sheet metal plasma guides |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20081209 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA HR MK YU |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: LINK, GERHARD Inventor name: BIHLER, JOCHEN Inventor name: KOCH, REINER |
|
DAX | Request for extension of the european patent (deleted) | ||
17Q | First examination report despatched |
Effective date: 20161209 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
INTG | Intention to grant announced |
Effective date: 20180430 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20180911 |