Patent
Workpiece processing apparatus using laser beam, has free jet of window gas which passes through cavity to produce negative pressure in region of workpiece
Peter Berger,D. Breitling,Friedrich Dausinger,Christian Foehl,Helmut Huegel,Sergei M. Klimentov,Taras V. Kononenko,Vitali I. Konov +7 more
- 30 Jan 2002
3
TL;DR: In this article, a laser, a focussing lens system, and a device for producing a negative pressure in the surroundings of the focussed spot was presented. But the negative pressure was generated by a free jet of a window gas passing through the cavity to produce a section of the cavity near to the workpiece.
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Abstract: The apparatus includes a laser, a focussing lens system, and a device for producing a negative pressure in the surroundings of the focussed spot. The device for producing the negative pressure includes an aerodynamic window (20) which can be placed tightly against the workpiece (10), and a cavity (28) extending in a direction at right angles to the propagation direction of the laser beam. A free jet of a window gas passes through the cavity to produce a negative pressure in the section of the cavity near to the workpiece.
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Citations
Patent
Verfahren und Vorrichtung beim Laserstrahlschneiden eines metallischen Bauteils
Jürgen Berndl,Roland Dierken,Peter Hoffmann,Hans Hornig +3 more
- 09 Nov 2006
TL;DR: In this paper, the authors show that a metallisches Bauteil is ausgebildet, der Laserstrahl eine Wellenlange im Bereich of 1000 nm oder dazu frequenzverdoppelte Wellen-lange and eine M-Zahl kleiner 2 aufweist and wahrendentimesdes Abfahrens gewobbelt oder senkrecht zur Schnittlinie oszillierend¯¯¯¯bewegt wird.
8
Patent
Transportable Koppelvorrichtung, mobile Schweißanlage und Verfahren zum Laserbearbeiten
André Schneider,Andrey Gumenyuk,Michael Rethmeier +2 more
- 08 Jun 2015
TL;DR: In this paper, a transportable koppel-vorrichtung zum Laserbearbeiten weist, e.g., a Kammer, eine Eintrittsoffnung, ein Lavalduse zum Einstromen eines Gases in die Kammer.
3
Patent
Nozzle for laser processing head
Izumi Takashi
- 19 Jul 2018
TL;DR: In this article, an elastic member is provided in a tip end of the nozzle tip body and contacts with the workpiece while elastically extending and contracting in the axial center direction of the tip body.
1
References
Patent
Laser welding head and method of operating same
Sven-Olov Roos,Reinhold Dinger,Klaus Ludewigt,Norbert Taufenbach +3 more
- 29 Jul 1994
TL;DR: In this paper, the authors proposed a laser welding head consisting of a housing (2) in which are arranged an outlet aperture for a focused laser beam (6) and a flow duct (8) within the housing which runs past the outlet aperture and carries a laminar gas flow in the region of the aperture.
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Patent
Apparatus for machining workpieces with radiation
Eckhard Beyer,Klaus Dipl Ing Behler,Gerd Prof Dr Ing Herziger +2 more
- 15 Jul 1988
TL;DR: In this article, an optical system focusing the radiation onto the workpiece and a device putting the area of interaction between the radiation and the work piece under vacuum was designed in such a way that the vacuum device has an opening producing a localised vacuum only in the machining area.
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