DE10218296A1 - Scanner welding device - Google Patents

Scanner welding device

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Publication number
DE10218296A1
DE10218296A1 DE10218296A DE10218296A DE10218296A1 DE 10218296 A1 DE10218296 A1 DE 10218296A1 DE 10218296 A DE10218296 A DE 10218296A DE 10218296 A DE10218296 A DE 10218296A DE 10218296 A1 DE10218296 A1 DE 10218296A1
Authority
DE
Germany
Prior art keywords
welding
protective gas
laser
container
gas
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Withdrawn
Application number
DE10218296A
Other languages
German (de)
Inventor
Wolfgang Danzer
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.)
Linde GmbH
Original Assignee
Linde GmbH
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 Linde GmbH filed Critical Linde GmbH
Priority to DE10218296A priority Critical patent/DE10218296A1/en
Priority to EP03727354A priority patent/EP1497072A1/en
Priority to AU2003233057A priority patent/AU2003233057A1/en
Priority to PCT/EP2003/004280 priority patent/WO2003090967A1/en
Publication of DE10218296A1 publication Critical patent/DE10218296A1/en
Priority to US10/971,733 priority patent/US20050121425A1/en
Withdrawn legal-status Critical Current

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
    • B23K26/20—Bonding
    • B23K26/21—Bonding by welding
    • B23K26/24—Seam welding
    • 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
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
    • B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
    • 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
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
    • B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
    • B23K26/0648—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms comprising lenses
    • 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
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
    • B23K26/0665—Shaping the laser beam, e.g. by masks or multi-focusing by beam condensation on the workpiece, e.g. for focusing
    • 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
    • B23K26/082—Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head
    • 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
    • B23K26/10—Devices involving relative movement between laser beam and workpiece using a fixed support, i.e. involving moving the laser beam
    • 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
    • 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
    • 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
    • B23K26/20—Bonding
    • B23K26/21—Bonding by welding
    • B23K26/22—Spot welding
    • 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
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/006—Vehicles

Abstract

Die Erfindung betrifft eine Vorrichtung zum Laserschweißen, insbesondere zum Scannerschweißen. Um auch bei diesem Verfahren die Schweißstellen unter Schutzgas zu halten, wird eine Wanne 4 mit Schutzgaszuführung 5 vorgeschlagen.The invention relates to a device for laser welding, in particular for scanner welding. In order to keep the welds under protective gas in this method as well, a trough 4 with protective gas supply 5 is proposed.

Description

Die Erfindung betrifft eine Laser-Schweiß-Vorrichtung, insbesondere für das sogenannte Scannerschweißen. The invention relates to a laser welding device, in particular for the so-called scanner welding.

Beim Laserschweißen wird als Regelfall ein Laserstrahl auf das zu bearbeitende Werkstück fokussiert. Parallel zu der Optik oder in direkter Nachbarschaft ist eine Düse für eine Schutzgaszufuhr vorgesehen, damit die vom Laserstrahl erhitzte Schweißstelle nicht mit der Umgebungsluft in Berührung kommt. In laser welding, a laser beam is usually applied to the workpiece to be processed Workpiece focused. There is a nozzle parallel to the optics or in the immediate vicinity provided for a protective gas supply, so that the welding point heated by the laser beam does not come into contact with the ambient air.

Aus dem Prospekt "Remote Welding mit TRUMPF Scanner und TLF CO2-Laser" ist das sogenannte Scannerschweißen bekannt. Dieses Schweißen ersetzt teilweise das Widerstandspunktschweißen, welches zwar ein kostengünstiges Standardverfahren zum Zusammenfügen großer Bauteile ist, jedoch das Design und die Funktionalität der gefügten Bauteile durch die großen Störkonturen der Zangenwerkzeuge einschränkt. Auch die geringe Verwindungssteifigkeit der Punktverbindungen kann ein Nachteil sein. Beim Schweißen mit Scanner wird ein langbrennweitig fokussierter Laserstrahl hoher Strahlqualität frei über das dreidimensionale Werkstück gelenkt. Anders als beim herkömmlichen Laserschweißen bewegt sich hier also nicht die Fokussieroptik, sondern nur der Fokussierpunkt. Dies gelingt durch hochdynamische Verkippung feststehender Spiegel in großem Abstand über dem Werkstück. Die Laserleistung wird synchron zur Bewegung angesteuert. Der Laser ist in einem Bereich von ca. 60 cm bis 1 m über dem Werkstück angeordnet und kann einen Werkstückbereich überstreichen, der 60 × 60 cm bis 1 × 2 m beträgt. So werden beim Scannerschweißen die Punktverbindungen durch lasergeschweißte Steppnähte ersetzt, wodurch zum einen die Festigkeit und Steifigkeit steigen, was zu einer Reduktion der Blechdicken und Gewichtsersparnis führt. Zum anderen lässt sich die wesentlich bessere Zugänglichkeit des Laserschweißverfahrens nutzen, um einfachere, elegantere sowie wirtschaftliche Konstruktionen zu realisieren. Bei kartesisch oder mit Roboter geführten Arbeitsoptiken bleiben unproduktive Nebenzeiten für die Verfahrwegen zwischen den Fügestellen. Mit dem Einsatz der Scannertechnik fassen sich die Verfahrwege eliminieren. So-called scanner welding is known from the brochure "Remote Welding with TRUMPF Scanner and TLF CO 2 Laser". This welding partially replaces resistance spot welding, which is an inexpensive standard method for joining large components, but limits the design and functionality of the joined components due to the large interference contours of the pliers tools. The low torsional rigidity of the point connections can also be a disadvantage. When welding with a scanner, a long-focus laser beam of high beam quality is directed freely over the three-dimensional workpiece. In contrast to conventional laser welding, it is not the focusing optics that move here, but only the focusing point. This is achieved through the highly dynamic tilting of fixed mirrors at a large distance above the workpiece. The laser power is controlled synchronously with the movement. The laser is arranged in an area of approx. 60 cm to 1 m above the workpiece and can sweep over a workpiece area that is 60 × 60 cm to 1 × 2 m. In scanner welding, the point connections are replaced by laser-welded quilting seams, which on the one hand increases strength and rigidity, which leads to a reduction in sheet thickness and weight savings. On the other hand, the much better accessibility of the laser welding process can be used to implement simpler, more elegant and economical designs. With Cartesian or robot-guided work optics, there are unproductive idle times for the travel distances between the joints. With the use of scanner technology, the travels can be eliminated.

Ein ähnliches System ist dem Prospekt "Remote Welding System, die neue Freiheit", der ROFIN-SINAR Laser GmbH zu entnehmen. Auch hier wird ein CO2-Laser mit einer Fokussierbrennweite von über 1,6 m verwendet. Daraus resultiert ein Arbeitsraum in der Form eines Pyramidenstumpfes mit einer Grundfläche von 1,5 m × 2,4 m. A similar system can be found in the "Remote Welding System, the New Freedom" brochure from ROFIN-SINAR Laser GmbH. Here, too, a CO 2 laser with a focal length of over 1.6 m is used. This results in a work space in the shape of a truncated pyramid with a base area of 1.5 m × 2.4 m.

Nachteilig bei dem Laser-Remote-Schweißen gegenüber dem klassischen Schweißen ist, dass kein Schutzgas über den Schweißkopf an die Schweißnaht herangebracht werden kann. Darum schweißt man heute in Deutschland in den Versuchsaufbauten unter Umgebungsluft. Das Schweißen unter Umgebungsluft hat aber verschiedene Nachteile: Stickstoff führt zur Porenbildung in der Schweißnaht, Sauerstoff führt zur unkontrollierter Schlackebildung. Auch die Luftfeuchtigkeit ist störend und kann zur Porenbildung durch Wasserstoff führen. A disadvantage of laser remote welding compared to classic welding is that no shielding gas is brought up to the weld via the welding head can be. That is why welding is carried out in experimental setups in Germany today under ambient air. However, welding in ambient air has several Disadvantages: nitrogen leads to pore formation in the weld seam, oxygen leads to uncontrolled slag formation. The air humidity is also annoying and can lead to Pore formation through hydrogen.

Aus der WO 90/06206 ist eine Mikrolasermaschine zum Behandeln kleiner Objekte bekannt, wobei die kleinen Objekte in einer luftdichten Kammer angeordnet sind, die dann mit einem reaktiven Gas geflutet wird. Diese Vorrichtung eignet sich allerdings nur für kleine Gegenstände. WO 90/06206 describes a microlaser machine for treating small objects known, the small objects are arranged in an airtight chamber, the then flooded with a reactive gas. However, this device is suitable only for small items.

Aus der EP 102 835 B1 ist ein Schweißapparat bekannt, der ebenfalls eine gasdichte Schweißkammer enthält, die von unten mit einem Schutzgas geflutet wird. Auch diese Vorrichtung eignet sich nur zum Bearbeiten relativ kleiner Gegenstände, die in die Kammer eingeschlossen werden können. A welding apparatus is known from EP 102 835 B1, which is also gas-tight Contains welding chamber, which is flooded with a protective gas from below. This too The device is only suitable for processing relatively small objects that are in the Chamber can be included.

Aufgabe der Erfindung ist es daher, eine Laserschweißvorrichtung für das Scannerschweißen großer Bauteile vorzuschlagen, das die Nachteile des Schweißens an Umgebungsluft verhindert. The object of the invention is therefore to provide a laser welding device for the Scanner welding to propose large components, which has the disadvantages of welding prevented in ambient air.

Diese Aufgabe wird erfindungsgemäß gelöst von einer Vorrichtung mit den Merkmalen des Anspruchs 1. Ausführungen der Erfindung sind Gegenstände von Unteransprüchen. This object is achieved according to the invention by a device with the features of claim 1. Embodiments of the invention are the subject of Dependent claims.

Erfindungsgemäß wird das Bauteil in einen von oben offenen, wannenartigen Behälter gebracht, welcher mit Schutzgas geflutet wird. Dazu wird erfindungsgemäß die relative Schwere des Schutzgases gegenüber der Luft ausgenutzt, wobei das Gas von unten in den wannenartigen Behälter geführt wird. In die Wanne wird dann das zu verschweißende Teil, wie z. B. eine Autotüre, eingebracht. Bei der erfindungsgemäßen Vorrichtung sind dann alle Schweißstellen vom Schutzgas automatisch umgeben. Da in einer Ausführungsform die Seitenteile der Wanne höher sind als das zu bearbeitende Bauteil, sind die eingetauchten Bauteile immer vollständig von dem Schutzgas umgeben. According to the invention, the component is placed in a trough-like container that is open from above brought, which is flooded with protective gas. According to the invention, the relative Gravity of the protective gas against the air is exploited, the gas from below in the tub-like container is guided. This then becomes in the tub welding part, such as B. introduced a car door. In the case of the invention The device then automatically surrounds all welding points with the shielding gas. There in one embodiment the side parts of the tub are higher than that too machining component, the immersed components are always completely of that Protective gas surround.

Die Gaszufuhr kann seitlich oder von oben erfolgen. Das schwerere Gas fällt dann wie Wasser aus einem Wasserhahn in die Wanne. In einer bevorzugten Ausführung wird die Gaszufuhr von unten erfolgen, um möglichst wenige Verwirbelungen zu erzeugen. Als vorteilhaft haben sich Zuführungen an mehreren Stellen am Boden oder im unteren Wandbereich erwiesen. Ebenso die Zufuhr über perforierte Schläuche, die unten in die Wanne eingelegt sind. Eine höhere Anzahl von Öffnungen erlaubt eine niedrigere Gasgeschwindigkeit und reduziert die Verwirbelungen. Wenn das Schutzgas dann getaktet oder kontinuierlich in diese Wanne geführt wird, werden Lufteinwirbelungen, die durch das Einbringen des Bauteils von außen erfolgten, verdrängt. Nach unseren Versuchen wurde festgestellt, dass Lufteinwirbelungen von unter 5% der Wannenatmosphäre nicht schädlich sind. The gas can be supplied from the side or from above. The heavier gas then falls like Water from a tap into the tub. In a preferred embodiment the gas is supplied from below in order to generate as little turbulence as possible. Feeders at several points on the floor or in the lower one have proven to be advantageous Proven wall area. Likewise, the supply through perforated hoses, which are in the bottom Tub are inserted. A higher number of openings allows a lower number Gas velocity and reduces turbulence. If the protective gas then clocked or continuously fed into this tub, displaced by the introduction of the component from the outside. After our Experiments have found that air intakes of less than 5% of the Bath atmosphere are not harmful.

Der Behälter hat bevorzugt eine Grundfläche von > 60 × 60 cm oder von mehr als 1 × 2 m. Dies reicht, um handelsübliche Autotüren oder ähnliche Komponenten durch Lasersteppnähte schweißen zu können. The container preferably has a base area of> 60 × 60 cm or more than 1 × 2 m. This is enough to go through commercially available car doors or similar components To be able to weld laser stitching.

Als Schutzgase geeignet sind alle Gase und Gasmischungen, die für das Laserschweißen vorgeschlagen wurden und die gleichschwer oder schwerer als Luft sind. Vorzugsweise wird Argon oder CO2 oder Mischungen von Argon und CO2 verwendet. Möglich ist auch die Verwendung von Stickstoff allein oder gemischt mit anderen schweren, nicht reaktiven Gasen. Suitable gases are all gases and gas mixtures that have been proposed for laser welding and that are equally heavy or heavier than air. Argon or CO 2 or mixtures of argon and CO 2 are preferably used. It is also possible to use nitrogen alone or mixed with other heavy, non-reactive gases.

Weitere Vorteile und Merkmale der Erfindung ergeben sich anhand der in der Zeichnung gezeigten Ausführung. Further advantages and features of the invention result from the in the Drawing shown execution.

Die Figur zeigt eine erfindungsgemäße Laserschweißvorrichtung, wobei der Laserstrahl von oben über ein Fokussierlinse 1 auf einen ersten Kippspiegel 2 geleitet wird, dessen Drehachse im Wesentlichen vertikal steht. Von diesem Spiegel 2 wird das Licht auf einen zweiten Drehspiegel 3 gelenkt, der eine horizontale Kippachse hat. Mit dieser Optik ist ein Arbeitsbereich am Boden der Vorrichtung überstreichbar, an dem sich erfindungsgemäß der Schutzgasbehälter 4 befindet. Dieser Schutzgasbehälter hat einen ebenen Boden und vier Seitenwände, die entweder senkrecht stehen, leicht nach außen geneigt sind, oder auch nach innen eingezogen sein können. Die in der Figur gezeigte leichte Neigung nach außen erleichtert das Einbringen der Gegenstände von oben. Bei den heutigen automatisierten Produktionslinien ist dies für die modernen Roboter kein Problem mehr. Senkrechte Wände oder leicht nach innen geneigte Wände halten den Schutzgassee am Boden der Wanne stabiler. The figure shows a laser welding device according to the invention, the laser beam being directed from above via a focusing lens 1 onto a first tilting mirror 2 , the axis of rotation of which is essentially vertical. From this mirror 2 , the light is directed to a second rotating mirror 3 , which has a horizontal tilt axis. With this optic, a working area on the bottom of the device can be covered, on which the protective gas container 4 is located according to the invention. This protective gas container has a flat bottom and four side walls, which are either vertical, slightly inclined outwards, or can also be drawn inwards. The slight outward inclination shown in the figure facilitates the insertion of the objects from above. With today's automated production lines, this is no longer a problem for modern robots. Vertical walls or walls that slope slightly inwards keep the protective gas lake at the bottom of the tub more stable.

Eine einfache Schutzgaszuführung 5 ist im Boden des Behälters 4 gezeigt. A simple protective gas supply 5 is shown in the bottom of the container 4 .

Zum erfindungsgemäßen Schweißen werden das oder die Bauteile flach in den Behälter 4 gelegt. Über die verschwenkbare Laseroptik werden dann die anzubringenden Steppnähte durch Verschwenken der beiden Spiegel 2, 3 aufgebracht. Gleichzeitig wird Schutzgas durch die Schutzgaszuführung 5 zugeführt, so dass das zu bearbeitende Bauteil immer von Schutzgas umgeben ist. So kann eine Automobiltüre mit 30 Schweißnähten innerhalb von 30 sec. aus zwei Blechen zusammengefügt werden. For welding according to the invention, the component or components are placed flat in the container 4 . The quilting seams to be applied are then applied by pivoting the two mirrors 2 , 3 via the pivotable laser optics. At the same time, protective gas is supplied through the protective gas supply 5 , so that the component to be processed is always surrounded by protective gas. An automobile door with 30 welds can be assembled from two sheets within 30 seconds.

Claims (5)

1. Laserschweißvorrichtung, insbesondere zum sogenannten Scannerschweißen mit Steppnähten, gekennzeichnet durch einen oben offenen, wannenartigen Behälter (4) und eine Schutzgaszuführung (5). 1. Laser welding device, in particular for so-called scanner welding with quilting seams, characterized by an open, trough-like container ( 4 ) and a protective gas supply ( 5 ). 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Seiten des Behälters (4) höher sind als die Dicke des zu bearbeitenden Bauteils. 2. Device according to claim 1, characterized in that the sides of the container ( 4 ) are higher than the thickness of the component to be machined. 3. Vorrichtung nach Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, dass die Gaszufuhr von unten erfolgt. 3. Device according to claim 1 or claim 2, characterized in that the Gas is supplied from below. 4. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Behälter (4) eine Grundfläche von > 60 × 60 cm, bevorzugt von > als 1 m × 1 m hat. 4. Device according to one of the preceding claims, characterized in that the container ( 4 ) has a base area of> 60 × 60 cm, preferably of> than 1 m × 1 m. 5. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass als Schutzgas Gase schwerer als Luft verwendet werden, insbesondere Argon oder CO2 oder Mischungen, die diese Gase und/oder weitere Gase enthalten. 5. Device according to one of the preceding claims, characterized in that gases are used as protective gas heavier than air, in particular argon or CO 2 or mixtures containing these gases and / or other gases.
DE10218296A 2002-04-24 2002-04-24 Scanner welding device Withdrawn DE10218296A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE10218296A DE10218296A1 (en) 2002-04-24 2002-04-24 Scanner welding device
EP03727354A EP1497072A1 (en) 2002-04-24 2003-04-24 Scanner welding device comprising a vat and an inert gas supply
AU2003233057A AU2003233057A1 (en) 2002-04-24 2003-04-24 Scanner welding device comprising a vat and an inert gas supply
PCT/EP2003/004280 WO2003090967A1 (en) 2002-04-24 2003-04-24 Scanner welding device comprising a vat and an inert gas supply
US10/971,733 US20050121425A1 (en) 2002-04-24 2004-10-25 Scanner welding device comprising a vat and an inert gas supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE10218296A DE10218296A1 (en) 2002-04-24 2002-04-24 Scanner welding device

Publications (1)

Publication Number Publication Date
DE10218296A1 true DE10218296A1 (en) 2003-11-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE10218296A Withdrawn DE10218296A1 (en) 2002-04-24 2002-04-24 Scanner welding device

Country Status (4)

Country Link
EP (1) EP1497072A1 (en)
AU (1) AU2003233057A1 (en)
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WO (1) WO2003090967A1 (en)

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EP1481752A2 (en) * 2003-05-28 2004-12-01 MESSER GRIESHEIM GmbH Shielding gas apparatus used in laser machining
DE102007062211A1 (en) 2007-12-21 2009-06-25 Linde Ag Laser-remote-welding process employs agile laser beam moved and tilted relative to workpiece, with mobile nozzle blowing gas onto one weld region before moving on to the next
DE102007062212A1 (en) 2007-12-21 2009-06-25 Linde Ag Method for laser cutting a workpiece using a remote laser comprises gassing a processing region during processing of the workpiece by a process gas nozzle, moving the nozzle afterwards and gassing another processing region

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US5554837A (en) * 1993-09-03 1996-09-10 Chromalloy Gas Turbine Corporation Interactive laser welding at elevated temperatures of superalloy articles
US6020571A (en) * 1998-12-31 2000-02-01 General Electric Company Welding method and apparatus therefor
US6037563A (en) * 1999-03-01 2000-03-14 Chromalloy Gas Turbine Corporation Protective gas shroud for welding
JP2001030089A (en) * 1999-07-19 2001-02-06 Sumitomo Electric Ind Ltd Method of laser welding
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1481752A2 (en) * 2003-05-28 2004-12-01 MESSER GRIESHEIM GmbH Shielding gas apparatus used in laser machining
DE10324181A1 (en) * 2003-05-28 2004-12-23 Messer Griesheim Gmbh Shielding gas device for laser material processing
EP1481752A3 (en) * 2003-05-28 2006-05-10 Air Liquide Deutschland GmbH Shielding gas apparatus used in laser machining
DE102007062211A1 (en) 2007-12-21 2009-06-25 Linde Ag Laser-remote-welding process employs agile laser beam moved and tilted relative to workpiece, with mobile nozzle blowing gas onto one weld region before moving on to the next
DE102007062212A1 (en) 2007-12-21 2009-06-25 Linde Ag Method for laser cutting a workpiece using a remote laser comprises gassing a processing region during processing of the workpiece by a process gas nozzle, moving the nozzle afterwards and gassing another processing region

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