EP2024132A1 - Laserbearbeitungsmaschine mit einer einrichtung zum belüften der laserstrahlführung und verfahren zum belüften der laserstrahlführung einer laserbearbeitungsmaschine - Google Patents
Laserbearbeitungsmaschine mit einer einrichtung zum belüften der laserstrahlführung und verfahren zum belüften der laserstrahlführung einer laserbearbeitungsmaschineInfo
- 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- Withdrawn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 (de) | 2006-05-09 | 2006-05-09 | Laserbearbeitungsmaschine mit einer einrichtung zum belüften der laserstrahlführung und verfahren zum belüften der laserstrahlführung einer laserbearbeitungsmaschine |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2024132A1 true EP2024132A1 (de) | 2009-02-18 |
Family
ID=37649298
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06753535A Withdrawn EP2024132A1 (de) | 2006-05-09 | 2006-05-09 | Laserbearbeitungsmaschine mit einer einrichtung zum belüften der laserstrahlführung und verfahren zum belüften der laserstrahlführung einer laserbearbeitungsmaschine |
Country Status (4)
Country | Link |
---|---|
US (1) | US8203098B2 (de) |
EP (1) | EP2024132A1 (de) |
CN (1) | CN101443154B (de) |
WO (1) | WO2007128333A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2956337B1 (fr) * | 2010-02-16 | 2012-03-02 | Air Liquide | Installation d'usinage laser avec source de gaz commune pour l'oscillateur et la tete laser |
EP2537622B1 (de) * | 2010-10-15 | 2016-04-20 | Mitsubishi Electric Corporation | Laserverarbeitungsmaschine mit faltenbalgvorrichtung |
US20130032580A1 (en) * | 2010-11-29 | 2013-02-07 | Mitsubishi Electric Corporation | 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 |
USD850500S1 (en) * | 2016-08-31 | 2019-06-04 | Trumpf Gmbh + Co. Kg | Machine tool |
JP6852031B2 (ja) * | 2018-09-26 | 2021-03-31 | 株式会社東芝 | 溶接装置及びノズル装置 |
DE102019103659B4 (de) * | 2019-02-13 | 2023-11-30 | Bystronic Laser Ag | Gasführung, Laserschneidkopf und Laserschneidmaschine |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0970682A (ja) * | 1995-09-06 | 1997-03-18 | Kobe Steel Ltd | レーザ溶接装置 |
JPH1034372A (ja) * | 1996-07-19 | 1998-02-10 | Sumitomo Metal Ind Ltd | レーザ加工用ヘッド |
Family Cites Families (24)
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US3860784A (en) * | 1971-03-08 | 1975-01-14 | United Aircraft Corp | Deep penetration welding using lasers |
EP0163790A1 (de) | 1984-05-09 | 1985-12-11 | Noel E. Zeller | Spiegel mit Halterung |
JPS623894A (ja) * | 1985-06-28 | 1987-01-09 | Mitsubishi Electric Corp | レ−ザ加工機のレ−ザ光伝送路の防塵装置 |
US4806724A (en) * | 1986-08-15 | 1989-02-21 | Kawasaki Steel Corp. | Laser beam machining device |
DE3822097A1 (de) | 1988-06-30 | 1990-01-04 | Messer Griesheim Gmbh | Verfahren zum ablenken von in richtung zur optik einer laserduese bewegten partikeln |
JP3194021B2 (ja) * | 1992-07-03 | 2001-07-30 | 経済産業省産業技術総合研究所長 | レ−ザアニ−リング装置 |
CN1040514C (zh) * | 1993-10-21 | 1998-11-04 | 三菱电机株式会社 | 加工头及激光加工装置 |
JPH07164171A (ja) * | 1993-12-16 | 1995-06-27 | Toshiba Corp | レーザ加工方法 |
EP0712346B2 (de) | 1994-06-06 | 2005-06-22 | Amada Company Limited | laserstrahlmaschine |
DE29509648U1 (de) * | 1995-06-19 | 1995-09-14 | Trumpf Gmbh & Co | Laserbearbeitungsmaschine mit gasgefülltem Strahlführungsraum |
JP3633117B2 (ja) * | 1996-07-17 | 2005-03-30 | 三菱電機株式会社 | 光走査式レーザ加工機 |
DE19734715A1 (de) | 1997-08-11 | 1999-02-25 | Lambda Physik Gmbh | Vorrichtung zum Spülen des Strahlenganges eines UV-Laserstrahles |
DE29714489U1 (de) * | 1997-08-13 | 1997-10-09 | Trumpf Gmbh & Co | Laserbearbeitungsmaschine mit Gasausgleichsvolumen |
DE59909654D1 (de) * | 1999-11-12 | 2004-07-08 | Werner Kluft | Verfahren und Vorrichtung zur Messung von Prozessparametern eines Materialbearbeitungsprozesses |
DE50005527D1 (de) | 2000-08-05 | 2004-04-08 | Trumpf Werkzeugmaschinen Gmbh | Laserbearbeitungsmaschine mit wenigstens einem mit einem Spülmedium beaufschlagbaren optischen Element |
DE50009924D1 (de) * | 2000-08-12 | 2005-05-04 | Trumpf Lasertechnik Gmbh | Laserbearbeitungsmaschine mit gasgespültem Strahlführungsraum |
DE10226359B4 (de) * | 2002-06-13 | 2010-08-19 | Precitec Kg | Laserbearbeitungskopf zur Bearbeitung, insbesondere zum Schneiden eines Werkstücks mittels Laserstrahl |
ES2305159T3 (es) | 2002-08-01 | 2008-11-01 | Trumpf Werkzeugmaschinen Gmbh + Co. Kg | Maquina de mecanizado por laser. |
CN2677079Y (zh) * | 2003-02-11 | 2005-02-09 | 星云电脑股份有限公司 | 激光加工机吹气喷嘴 |
DE20306336U1 (de) * | 2003-04-22 | 2003-06-26 | Trumpf Werkzeugmaschinen Gmbh | Strahlführung einer Laserbearbeitungsmaschine |
US6894248B2 (en) * | 2003-05-20 | 2005-05-17 | Mitsubishi Denki Kabushiki Kaisha | Laser beam machining apparatus |
CN1271236C (zh) * | 2004-04-28 | 2006-08-23 | 华中科技大学 | 一种内置式激光熔覆喷嘴 |
DE502004008645D1 (de) * | 2004-08-06 | 2009-01-22 | Trumpf Werkzeugmaschinen Gmbh | Laserbearbeitungskopf |
EP1640105A1 (de) | 2004-09-28 | 2006-03-29 | Trumpf Werkzeugmaschinen GmbH + Co. KG | Verfahren zum Laserschweissen |
-
2006
- 2006-05-09 CN CN2006800544907A patent/CN101443154B/zh active Active
- 2006-05-09 EP EP06753535A patent/EP2024132A1/de not_active Withdrawn
- 2006-05-09 WO PCT/EP2006/004338 patent/WO2007128333A1/de 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 (ja) * | 1995-09-06 | 1997-03-18 | Kobe Steel Ltd | レーザ溶接装置 |
JPH1034372A (ja) * | 1996-07-19 | 1998-02-10 | Sumitomo Metal Ind Ltd | レーザ加工用ヘッド |
Also Published As
Publication number | Publication date |
---|---|
CN101443154A (zh) | 2009-05-27 |
US8203098B2 (en) | 2012-06-19 |
WO2007128333A1 (de) | 2007-11-15 |
CN101443154B (zh) | 2012-10-24 |
US20090120917A1 (en) | 2009-05-14 |
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