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WO2008141603A1 - Dispositif de changement de buse d'usinage laser sur une tête d'usinage laser - Google Patents

Dispositif de changement de buse d'usinage laser sur une tête d'usinage laser Download PDF

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Publication number
WO2008141603A1
WO2008141603A1 PCT/DE2008/000687 DE2008000687W WO2008141603A1 WO 2008141603 A1 WO2008141603 A1 WO 2008141603A1 DE 2008000687 W DE2008000687 W DE 2008000687W WO 2008141603 A1 WO2008141603 A1 WO 2008141603A1
Authority
WO
WIPO (PCT)
Prior art keywords
nozzle
laser
laser cutting
laser processing
laser machining
Prior art date
Application number
PCT/DE2008/000687
Other languages
German (de)
English (en)
Inventor
Nicolai Speker
Carsten Stegemann
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 WO2008141603A1 publication Critical patent/WO2008141603A1/fr

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
    • B23K26/14—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
    • B23K26/1462—Nozzles; Features related to nozzles
    • B23K26/1482—Detachable nozzles, e.g. exchangeable or provided with breakaway lines

Definitions

  • the invention relates to a device for changing a laser processing nozzle on a laser processing head.
  • the replacement of laser processing nozzles on a laser processing head of a laser processing machine is a repetitive activity.
  • the laser cutting head and therefore also the cutting nozzle have a special feature
  • Nozzle recognition is a useful addition to the fully automated operation of the laser processing machine. By a wrong assembly of the
  • Nozzle magazine during unmanned operation of the laser processing machine it can lead to significant expenses due to miscuts. It is generally customary to screw in laser processing nozzles in a laser processing head. But rotational movements lead to a higher cost, which makes automation difficult.
  • the Applicant has set itself the task to provide a simple and secure basis for an automatable laser machining nozzle change.
  • the process gas for laser processing is also used for actuating the component for the pneumatic locking and unlocking of the laser processing nozzle.
  • the process gas has a dual function. It is not necessary to use a separate gas for pneumatic actuation.
  • the ejection of the nozzle from the pneumatically unlocked mechanism also takes place by a pressure pulse of the process gas in the boiler chamber of the cutting head, whereby a manual nozzle change outside the automated system operation continues to be possible without tools.
  • Damage to the mechanism due to lateral collision can be caused by a sheet thickness-dependent depth limitation of the Z dimension.
  • the limitation can occur during the calibration of the distance sensor.
  • Fig. 1 is a perspective view of a laser system
  • Fig. 2 is a side view of a device for changing a laser cutting nozzle on a laser cutting head of
  • FIG. 3 shows a longitudinal section of the device according to FIG. 2 according to III-III in FIG. 2;
  • Fig. 4 is a longitudinal section of the device of Figure 2 according to IV-IV in
  • FIGS. 5a, b the locking mechanism of the laser cutting nozzle
  • FIGS. FIG. 6a-c shows the reception of a laser cutting nozzle from a magazine
  • FIG. FIGS. 7a-c the inclusion of another laser cutting nozzle from a magazine
  • a laser processing system 1 for laser cutting with a CO 2 laser 2, a control device 3, a laser processing head 4 and a workpiece support 5 can be seen.
  • a generated laser beam 6 is guided by means of deflecting mirrors to the laser processing head 4 and directed to a workpiece 8.
  • 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.
  • the laser cutting head 4 comprises a device 13 according to FIG. 2.
  • the device 13 for changing the laser cutting nozzle 12 can be attached by means of a union nut 14 to the laser cutting head 4 according to FIG.
  • In the device 13 is a dielectric 15 for a known Distance control integrated.
  • the mechanism for changing the laser cutting nozzle is covered by an outer housing 16.
  • a first gas connection 17 and a second gas connection 18 for a pneumatic actuation of the mechanism for changing the laser cutting nozzle 12 can be seen in FIG. 2.
  • the operation of the locking and unlocking of the laser cutting nozzle 12 is pneumatically via the already available at the laser cutting head 4 process gas or auxiliary gas.
  • the dielectric member 15 can be using the nut 14 on a not shown in the figure 3 component of
  • the laser cutting nozzle 12 is releasably secured to a ball cage 20 so that the laser cutting nozzle 12 can be exchanged and automatically changed by machine.
  • Locking or unlocking takes place via the interaction between a sliding according to the double arrow 21 in the axial direction
  • FIGS. 5a, 5b A molding surface 19 on the lifting cylinder 22 pushes the balls with a corresponding axial movement of the lifting cylinder 22 in a radial
  • the displacement of the lifting cylinder 22 in the direction of the laser cutting nozzle 12 is effected by activation of the second gas port 18.
  • a channel 27 is formed to direct the process gas into a pressure chamber 28 and pressurize a top 29 of the lifting cylinder 22.
  • the pressure in the pressure chamber 28 is regulated by means of a valve on the gas connection 18, so that the pressure chamber 28 can be aerated or vented to move the lifting cylinder 22 in the axial direction.
  • the displacement of the lifting cylinder 22 in the direction of the union nut 14 is effected by activation of the first gas connection 17.
  • a bottom 30 of the lifting cylinder 22 can be pressurized by 17 gas is guided by means of the channel 31 and the further gas connection ,
  • FIGS. 5a and 5b show the mechanism for locking and unlocking the laser cutting nozzle 12 by means of the device 13. For the sake of clarity, only the components essential to the mechanism are shown: laser cutting nozzle 12, lifting cylinder 22, ball 23. The picking process takes place in three phases :
  • the storage of the nozzle 12 is designed so that the shaft center has a defined position. As a result, the receiving device has a defined starting position.
  • the ball cage 20 and the nozzle 12 have a conical inner surface C and an outer surface 24, whereby the nozzle 12 if necessary something is erected when retracting the receiving device (Figure 5b).
  • the ball cage 20 moves over the bale B until the chamfer C rests on the centering bevel D. Tilting the nozzle is not possible due to the geometry and the chosen game.
  • FIGS. 6a to 6c the reception of a laser cutting nozzle 34 with a spherical nozzle tip 35 can be seen.
  • a nozzle magazine 36 with a bore 37 for supporting the laser cutting nozzle 34 is indicated.
  • FIG. 6a shows the optimum vertical alignment of the laser cutting nozzle for the recording. Due to the spherical nozzle tip 35, whose radius center is in the middle of the upper shaft end, the laser cutting nozzle 34 does not have to be aligned exactly perpendicular when the laser cutting nozzle 34 is received, as shown in Figures 6b and 6c.
  • FIGS. 7a to 7c the receptacle of a laser cutting nozzle 38 with a conical nozzle tip 39 can be seen.
  • a nozzle magazine 40 having a bore 41 for supporting the laser cutting nozzle 38.
  • FIG. 7a shows the optimum vertical alignment of the laser cutting nozzle 38 for the recording.
  • FIGS. 7b and 7c show a tilted laser cutting nozzle 38.
  • the quantity important for the recording process is the positional deviation of the nozzle shaft center M.
  • the deviation of the nozzle shaft center M is smallest when the center perpendicular H of the cone flank 39 intersects the nozzle shaft center M.
  • D / 2 of the bore 41 must be as large as the distance from point K to the center line of the nozzle.
  • the distance KM must be as long as possible, at least 1.5 times D. LIST OF REFERENCE NUMBERS

Landscapes

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

Abstract

L'invention concerne un dispositif (13) permettant de changer de buse d'usinage laser (12) sur une tête d'usinage laser. Un composant (22) peut être déplacé pneumatiquement pour verrouiller et déverrouiller la buse d'usinage laser (12).
PCT/DE2008/000687 2007-05-23 2008-04-19 Dispositif de changement de buse d'usinage laser sur une tête d'usinage laser WO2008141603A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007024366.0 2007-05-23
DE200710024366 DE102007024366A1 (de) 2007-05-23 2007-05-23 Einrichtung zum Wechseln einer Laserbearbeitungsdüse an einem Laserbearbeitungskopf

Publications (1)

Publication Number Publication Date
WO2008141603A1 true WO2008141603A1 (fr) 2008-11-27

Family

ID=39830384

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2008/000687 WO2008141603A1 (fr) 2007-05-23 2008-04-19 Dispositif de changement de buse d'usinage laser sur une tête d'usinage laser

Country Status (2)

Country Link
DE (1) DE102007024366A1 (fr)
WO (1) WO2008141603A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102528299A (zh) * 2010-09-16 2012-07-04 通快机床两合公司 用于检查安装在激光加工机中的气体喷嘴的方法以及配属的激光加工机

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2108475B1 (fr) * 2008-04-09 2010-05-19 Bystronic Laser AG Dispositif et procédé destinés au changement automatique d'ajutage de coupe
DE202012004806U1 (de) * 2012-05-08 2013-08-09 Scansonic Mi Gmbh Düse und Vorrichtung zur Materialbearbeitung mittels Energiestrahlen und Zusatzwerkstoff
JP6577110B2 (ja) 2017-10-06 2019-09-18 株式会社アマダホールディングス レーザ加工方法及びレーザ加工装置
EP3693125B1 (fr) * 2017-10-06 2022-02-09 Amada Holdings Co., Ltd. Procédé et dispositif de traitement au laser
DE102019116731A1 (de) * 2019-06-20 2020-12-24 Acsys Lasertechnik Gmbh Laserbearbeitungsvorrichtung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0507268A2 (fr) * 1991-04-01 1992-10-07 Miyachi Technos Corporation Unité de sortie du laser
EP1652614A1 (fr) * 2004-10-30 2006-05-03 Trumpf Werkzeugmaschinen GmbH + Co. KG Outil de maintien pour une tête de travail dans une machine laser avec plusieurs éléments anti-collision ayant des moyens pour ajuster l'effort de relâchement
DE102005006820A1 (de) * 2005-02-15 2006-08-24 Precitec Kg Aufnahmevorrichtung, insbesondere für ein Düsenelement eines Laserbearbeitungskopfes
US20070000888A1 (en) * 2004-11-29 2007-01-04 Tsunehiko Yamazaki Laser processing machine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58186589A (ja) * 1982-04-27 1983-10-31 富士通フアナツク株式会社 工業用ロボツトのハンド交換装置
DE3735598A1 (de) * 1987-10-21 1989-05-11 Messer Griesheim Gmbh Verfahren und einrichtung zum automatischen wechseln von schneidduesen
DE4242057C2 (de) * 1992-12-13 2002-07-18 Bayerische Motoren Werke Ag Laser-Bearbeitungsanlage

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0507268A2 (fr) * 1991-04-01 1992-10-07 Miyachi Technos Corporation Unité de sortie du laser
EP1652614A1 (fr) * 2004-10-30 2006-05-03 Trumpf Werkzeugmaschinen GmbH + Co. KG Outil de maintien pour une tête de travail dans une machine laser avec plusieurs éléments anti-collision ayant des moyens pour ajuster l'effort de relâchement
US20070000888A1 (en) * 2004-11-29 2007-01-04 Tsunehiko Yamazaki Laser processing machine
DE102005006820A1 (de) * 2005-02-15 2006-08-24 Precitec Kg Aufnahmevorrichtung, insbesondere für ein Düsenelement eines Laserbearbeitungskopfes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102528299A (zh) * 2010-09-16 2012-07-04 通快机床两合公司 用于检查安装在激光加工机中的气体喷嘴的方法以及配属的激光加工机
CN102528299B (zh) * 2010-09-16 2015-01-28 通快机床两合公司 用于检查安装在激光加工机中的气体喷嘴的方法以及配属的激光加工机

Also Published As

Publication number Publication date
DE102007024366A1 (de) 2008-11-27

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