WO2002011942A1 - Welding device - Google Patents

Welding device Download PDF

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Publication number
WO2002011942A1
WO2002011942A1 PCT/EP2001/008374 EP0108374W WO0211942A1 WO 2002011942 A1 WO2002011942 A1 WO 2002011942A1 EP 0108374 W EP0108374 W EP 0108374W WO 0211942 A1 WO0211942 A1 WO 0211942A1
Authority
WO
WIPO (PCT)
Prior art keywords
carrier element
arm
focusing optics
collimator
laser
Prior art date
Application number
PCT/EP2001/008374
Other languages
German (de)
French (fr)
Inventor
Roland Oesterlein
Original Assignee
Abb Research Ltd.
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 Abb Research Ltd. filed Critical Abb Research Ltd.
Publication of WO2002011942A1 publication Critical patent/WO2002011942A1/en

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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
    • B23K26/08—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
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/006—Vehicles

Definitions

  • the invention relates to a device for welding with a laser according to the preamble of patent claim 1.
  • Such a welding device is used where components made of metal are to be connected to one another in a materially integral manner.
  • a very large area of application is, among other things, the production of vehicle bodies.
  • the invention has for its object to provide a device for welding, in which the radiation emitted by a laser is used to connect components, and the laser can also be arranged outside the device.
  • the only figure belonging to the description shows a welding device 1, which comprises a laser 2, a carrier element 3, an optical device 4 and an arm 5.
  • the carrier element 3 is designed as a hollow component which is made of metal.
  • the cross section of the carrier 3 can be round, oval, quadrangular or polygonal. It is used to receive the optical device 4 and to attach a clamping element 3S to it.
  • the optical device 4 comprises a collimator 6, a deflection mirror 7, a single-lens or multi-lens focusing optics 8, which in the embodiment shown here is designed as a biconvex lens.
  • the optical device 4 can be encapsulated in a separate housing (not shown here) which is received by the carrier element 3. However, you can also like shown here, can be installed directly in the support element 3.
  • the collimator 6 is installed at the first end of the carrier element 3. It is connected via an optical waveguide 10 to the laser 2 located outside the welding device 1.
  • the laser 2 is designed as a diode laser.
  • Nd YAG or other fiber-coupled lasers can also be used as the radiation source.
  • the deflection mirror 7 is installed at the second end of the carrier element 3. This is installed so that the radiation is deflected perpendicular to the optical axis 9 of the collimator 6.
  • the focusing optics 8 which is arranged behind the deflecting mirror 7 when viewed in the radiation direction, the radiation from the laser 2 is focused in the focal point of the focusing optics 8.
  • the components 20 to be connected to one another are also arranged there.
  • the carrier element 3 is provided at the second end with a clamping element 3S, the length of which is adapted to the focal length of the converging lens.
  • the 3S clamping element is open on both.
  • the diameter of the clamping element 3S, which directly adjoins the biconvex lens 8, is adapted to its diameter and then tapers to a few millimeters up to the free end.
  • a clamping bracket (not shown here) attached to the carrier element 3 can also be used.
  • the carrier element 3 is then open in the area in front of the focusing optics 8, so that the radiation can be directed onto the components 20.
  • a second clamping element 5S is installed at the free end of the arm 5, such that the two clamping elements 3S and 5S are perpendicular to one another when the device 1 is closed.
  • components 20 these are arranged between the clamping elements 3S and 5S, and permanently connected with the aid of the radiation from the laser 2, which is directed onto the components 20 through the clamping element 3S.
  • the arm 5 is divided into two sections 50 and 51. These have different lengths. When the welding device 1 is closed, the longer section 51 is aligned parallel to the carrier element 3 and provided with the clamping element 5S.
  • the two sections 50 and 51 are connected to one another in such a way that an angle of approximately 120 ° is enclosed between them, which faces the carrier element 3.
  • the section 50 is connected at its first end to a lever arrangement 11. This is formed by two levers 12. In the exemplary embodiment shown here, only one lever 12 can be seen, while the second lever 12 is arranged mirror-symmetrically to a spindle 14 on the rear side thereof.
  • the spindle 14 can be moved back and forth perpendicular to the longitudinal axis of the carrier element 3.
  • a drive device 15, which is installed in a housing 16, is provided for moving the spindle 14.
  • the spindle 14 is provided with a guide element 14F, to which a free end of the lever 12 is movably connected.
  • the second free end of the lever 12 is movably supported at the first end of the section 50 belonging to the arm 5.
  • the second end of section 50 is movably attached to a tab-shaped component 17, which is part of the housing 16.
  • the tab-shaped component 17 additionally serves as a support for the carrier element 3 and the spindle 14. For this purpose, it is provided at the lower end with a shoulder 17A which is aligned parallel to the carrier element 3 and on which the spindle 14 is supported.
  • the carrier element 3 is placed on the housing 16 and connected to it via the tab-shaped component 17.
  • the housing 16 itself is connected to a joint 18 of a robot arm 19 (not shown here).
  • the lever arrangement 11 is moved in the direction of the carrier element 3.
  • the clamping element 5S moves away from the clamping element 3S.
  • the clamping element 5S is moved until the components 20 are firmly pressed between the two clamping elements 3S and 5S.
  • the invention is not limited to the use of a lever arrangement 11 and a drive device 15 for the off- NEN and closing the welding device. Rather, any other device suitable for this purpose can also be used to move the arm 5.

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Optical Couplings Of Light Guides (AREA)

Abstract

The invention relates to a welding device containing a laser (2). The device (1) comprises a support element (3), wherein an optical arrangement (4) is at least partially integrated. Said optical arrangement (4) is connected to a laser (2) which is arranged outside the device (1). Said device (1) has an arm (5) which can be moved to and from the support element (3). The components which are to be connected (20) are inserted between two tightening elements (3S and 5S). One of the elements is fixed to a support element (3) and the other is fixed to an arm (5).

Description

Vorrichtung zum Schweißen Welding device
Die Erfindung bezieht sich auf eine Vorrichtung zum Schweißen mit einem Laser gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a device for welding with a laser according to the preamble of patent claim 1.
Eine solche Schweißvorrichtung kommt dort zur Anwendung, wo Bauelemente aus Metall stoffschlüssig miteinander zu verbinden sind. Ein sehr großes Anwendungsgebiet ist unter anderem die Herstellung von Karosserien für Fahrzeuge.Such a welding device is used where components made of metal are to be connected to one another in a materially integral manner. A very large area of application is, among other things, the production of vehicle bodies.
Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zum Schweißen aufzuzeigen, bei der die von einem Laser emittiert Strahlung zum Verbinden von Bauteilen verwendet wird, und der Laser auch außerhalb der Vorrichtung angeordnet werden kann.The invention has for its object to provide a device for welding, in which the radiation emitted by a laser is used to connect components, and the laser can also be arranged outside the device.
Diese Aufgabe wird durch die Merkmale des Patentanspruchs 1 gelöst.This object is achieved by the features of patent claim 1.
Weitere erfinderische Merkmale sind in den abhängigen Ansprüchen gekennzeichnet.Further inventive features are characterized in the dependent claims.
Die Erfindung wird nachfolgend an Hand einer schematischen Zeichnung näher erläutert.The invention is explained in more detail below with the aid of a schematic drawing.
Die einzige zur Beschreibung gehörige Figur zeigt eine Schweißvorrichtung 1 , die einen Laser 2, ein Trägerelement 3, eine optische Einrichtung 4 sowie einen Arm 5 um- fasst. Das Trägerelement 3 ist als hohles Bauelement ausgebildet, das aus Metall gefertigt ist. Der Querschnitt des Trägers 3 kann rund, oval vier- oder vieleckig ausgeführt werden. Er wird dazu genutzt, die optische Einrichtung 4 aufzunehmen und ein Klemmelement 3S daran zu befestigen. Die optische Einrichtung 4 umfasst einen Kollimator 6, einen Umlenkspiegel 7, eine ein- oder mehrlinsige Fokusieroptik 8, die bei dem hier dargestellten Ausführungsbeispiel als bikonvexe Linse ausgebildet ist. Die optische Einrichtung 4 kann in einem eigenen Gehäuse (hier nicht dargestellt) gekapselt werden, das vom Trägerelement 3 aufgenommen wird. Sie kann jedoch auch, wie hier dargestellt, im Trägerelement 3 direkt installiert werden. Der Kollimator 6 ist am ersten Ende des Trägerelements 3 installiert. Er steht über einen Lichtwellenleiter 10 mit dem außerhalb der Schweißvorrichtung 1 befindlichen Laser 2 in Verbindung. Der Laser 2 ist bei dem hier dargestellten Ausführungsbeispiel als Diodenlaser ausgebildet. Als Strahlungsquelle können auch Nd:YAG oder andere faserkoppelbare Laser Verwendung finden. Mit Hilfe des Kollimators 6 wird die von dem Laser 2 kommende Strahlung parallel ausgerichtet und entlang der optischen Achse 9 des Kollimators 6 innerhalb des Trägerelements 3 bis zu dessen zweitem Ende weitergeleitet. Am zweiten Ende des Trägerelements 3 ist der Umlenkspiegel 7 installiert. Dieser ist so installiert, dass die Strahlung senkrecht zur optischen Achse 9 des Kollimators 6 abgelenkt wird. Mit Hilfe der Fokusieroptik 8, die in Strahlungsrichtung gesehen hinter dem Umlenkspiegel 7 angeordnet ist, wird die Strahlung des Lasers 2 im Brennpunkt der Fokusieroptik 8 gebündelt. Dort werden auch die miteinander zu verbindenden Bauteile 20 angeordnet.The only figure belonging to the description shows a welding device 1, which comprises a laser 2, a carrier element 3, an optical device 4 and an arm 5. The carrier element 3 is designed as a hollow component which is made of metal. The cross section of the carrier 3 can be round, oval, quadrangular or polygonal. It is used to receive the optical device 4 and to attach a clamping element 3S to it. The optical device 4 comprises a collimator 6, a deflection mirror 7, a single-lens or multi-lens focusing optics 8, which in the embodiment shown here is designed as a biconvex lens. The optical device 4 can be encapsulated in a separate housing (not shown here) which is received by the carrier element 3. However, you can also like shown here, can be installed directly in the support element 3. The collimator 6 is installed at the first end of the carrier element 3. It is connected via an optical waveguide 10 to the laser 2 located outside the welding device 1. In the exemplary embodiment shown here, the laser 2 is designed as a diode laser. Nd: YAG or other fiber-coupled lasers can also be used as the radiation source. With the aid of the collimator 6, the radiation coming from the laser 2 is aligned in parallel and passed on along the optical axis 9 of the collimator 6 within the carrier element 3 to its second end. The deflection mirror 7 is installed at the second end of the carrier element 3. This is installed so that the radiation is deflected perpendicular to the optical axis 9 of the collimator 6. With the aid of the focusing optics 8, which is arranged behind the deflecting mirror 7 when viewed in the radiation direction, the radiation from the laser 2 is focused in the focal point of the focusing optics 8. The components 20 to be connected to one another are also arranged there.
Das Trägerelement 3 ist am zweiten Ende mit einem Spannelement 3S versehen, dessen Länge an die Brennweite der Sammellinse angepasst ist. Das Spannelement 3S ist an beiden offen. Der Durchmesser des Spannelements 3S, das direkt an die bikonvexe Linse 8 angrenzt, ist an deren Durchmesser angepasst und verjüngt dann bis zum freien Ende hin bis auf einige Millimeter. An Stelle des Spannelements 3S kann auch ein am Trägerelement 3 befestigter Spannbügel (hier nicht dargestellt) verwendet werden. Das Trägerelement 3 ist dann im Bereich vor der Fokusieroptik 8 offen, so dass die Strahlung auf die Bauteile 20 gelenkt werden kann.The carrier element 3 is provided at the second end with a clamping element 3S, the length of which is adapted to the focal length of the converging lens. The 3S clamping element is open on both. The diameter of the clamping element 3S, which directly adjoins the biconvex lens 8, is adapted to its diameter and then tapers to a few millimeters up to the free end. Instead of the clamping element 3S, a clamping bracket (not shown here) attached to the carrier element 3 can also be used. The carrier element 3 is then open in the area in front of the focusing optics 8, so that the radiation can be directed onto the components 20.
Ein zweites Spannelement 5S ist am freien Ende des Arms 5 installiert, derart, dass die beiden Spannelemente 3S und 5S senkrecht aufeinander stehen, wenn die Vorrichtung 1 geschlossen ist. Zum Verbinden von Bauteilen 20 werden diese zwischen den Spannelementen 3S und 5S angeordnet, und mit Hilfe der Strahlung des Lasers 2, die durch das Spannelement 3S auf die Bauteile 20 geleitet wird, dauerhaft verbunden. Der Arm 5 ist in zwei Abschnitte 50 und 51 unterteilt. Diese weisen unterschiedliche Längen auf. Der längere Abschnitt 51 ist bei geschlossener Schweißvorrichtung 1 parallel zu dem Trägerelement 3 ausgerichtet und mit dem Spannelement 5S versehen. Die beiden Abschnitte 50 und 51 sind so miteinander verbunden, dass zwischen ihnen ein Winkel von ca. 120° eingeschlossen ist, der dem Trägerelement 3 zugewandt ist.A second clamping element 5S is installed at the free end of the arm 5, such that the two clamping elements 3S and 5S are perpendicular to one another when the device 1 is closed. To connect components 20, these are arranged between the clamping elements 3S and 5S, and permanently connected with the aid of the radiation from the laser 2, which is directed onto the components 20 through the clamping element 3S. The arm 5 is divided into two sections 50 and 51. These have different lengths. When the welding device 1 is closed, the longer section 51 is aligned parallel to the carrier element 3 and provided with the clamping element 5S. The two sections 50 and 51 are connected to one another in such a way that an angle of approximately 120 ° is enclosed between them, which faces the carrier element 3.
Der Abschnitt 50 ist mit seinem ersten Ende mit einer Hebelanordnung 11 verbunden. Diese wird durch zwei Hebel 12 gebildet. Bei dem hier dargestellten Ausführungsbeispiel ist nur ein Hebel 12 zu sehen, während der zweite Hebel 12 spiegelsymmetrisch zu einer Spindel 14 auf deren Rückseite angeordnet ist. Die Spindel 14 kann senkrecht zur Längsachse des Trägerelements 3 hin und her bewegt werden. Zum Bewegen der Spindel 14 ist eine Antriebsvorrichtung 15 vorgesehen, die in einem Gehäuse 16 installiert ist. Die Spindel 14 ist mit einem Führungselement 14F versehen, mit dem ein freies Ende des Hebels 12 beweglich verbunden. Das zweite freie Ende des Hebels 12 ist beweglich am ersten Ende des Abschnitts 50 gehaltert, der zu dem Arm 5 gehört. Das zweite Ende des Abschnitts 50 ist beweglich an einem laschenförmiges Bauelement 17 befestigt, das Bestandteil des Gehäuses 16 ist. Das laschenförmige Bauelement 17 dient zusätzlich als Stütze für das Trägerelement 3 und die Spindel 14. Hierfür ist es am unteren Ende mit einem Ansatz 17A versehen, das parallel zu dem Trägerelement 3 ausgerichtet ist, und auf dem die Spindel 14 abgestützt ist. Das Trägerelement 3 ist auf das Gehäuse 16 aufgesetzt, und über das laschenförmige Bauelement 17 damit verbunden. Das Gehäuse 16 selbst ist mit einem Gelenk 18 eines Roboterarms 19 (hier nicht dargestellt) verbunden.The section 50 is connected at its first end to a lever arrangement 11. This is formed by two levers 12. In the exemplary embodiment shown here, only one lever 12 can be seen, while the second lever 12 is arranged mirror-symmetrically to a spindle 14 on the rear side thereof. The spindle 14 can be moved back and forth perpendicular to the longitudinal axis of the carrier element 3. A drive device 15, which is installed in a housing 16, is provided for moving the spindle 14. The spindle 14 is provided with a guide element 14F, to which a free end of the lever 12 is movably connected. The second free end of the lever 12 is movably supported at the first end of the section 50 belonging to the arm 5. The second end of section 50 is movably attached to a tab-shaped component 17, which is part of the housing 16. The tab-shaped component 17 additionally serves as a support for the carrier element 3 and the spindle 14. For this purpose, it is provided at the lower end with a shoulder 17A which is aligned parallel to the carrier element 3 and on which the spindle 14 is supported. The carrier element 3 is placed on the housing 16 and connected to it via the tab-shaped component 17. The housing 16 itself is connected to a joint 18 of a robot arm 19 (not shown here).
Zum Öffnen der Schweißvorrichtung 1 wird die Hebelanordnung 11 in Richtung auf das Trägerelement 3 zubewegt. Dabei entfernt sich das Spannelement 5S vom Spannelement 3S. Bei der umgekehrten Bewegung der Hebelanordnung 11 wird das Spannelement 5S so weit bewegt, bis die Bauteile 20 fest zwischen den beiden Spannelemente 3S und 5S eingepresst sind. Die Erfindung beschränkt sich nicht nur auf die Verwendung einer Hebelanordnung 11 und einer Antriebsvorrichtung 15 zum Off- nen und Schließen der Schweißvorrichtung. Vielmehr kann zum Bewegen des Arms 5 auch jede andere hierfür geeignete Vorrichtung verwendet werden. To open the welding device 1, the lever arrangement 11 is moved in the direction of the carrier element 3. The clamping element 5S moves away from the clamping element 3S. With the reverse movement of the lever arrangement 11, the clamping element 5S is moved until the components 20 are firmly pressed between the two clamping elements 3S and 5S. The invention is not limited to the use of a lever arrangement 11 and a drive device 15 for the off- NEN and closing the welding device. Rather, any other device suitable for this purpose can also be used to move the arm 5.

Claims

Patentansprüche claims
1. Vorrichtung zum Schweißen, dadurch gekennzeichnet, dass ein Trägerelement (3) vorgesehen ist, in das eine optische Einrichtung (4) wenigstens teilweise integriert ist, die mit einem Laser (2) in Verbindung steht, und dass wenigstens ein Arm1. A device for welding, characterized in that a carrier element (3) is provided, in which an optical device (4) is at least partially integrated, which is connected to a laser (2), and that at least one arm
(5) vorgesehen, der auf das Trägerelement (3) zu und davon weg bewegbar ist.(5) is provided, which is movable towards and away from the carrier element (3).
2. Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass die optische Einrichtung (4) einen Kollimator (6), einen Umlenkspiegel (7) und eine Fokusieroptik (8) umfasst, und dass der Kollimator (6) über einen Lichtwellenleiter (10) mit dem Laser (2) in Verbindung steht, der außerhalb der Vorrichtung (1) angeordnet ist2. Device according to claim 1, characterized in that the optical device (4) comprises a collimator (6), a deflecting mirror (7) and focusing optics (8), and that the collimator (6) via an optical waveguide (10) communicates with the laser (2), which is arranged outside the device (1)
3. Vorrichtung nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass das Trägerelement (3) als hohles Bauelement ausgebildet ist und der Kollimator3. Device according to one of claims 1 or 2, characterized in that the carrier element (3) is designed as a hollow component and the collimator
(6) außen am ersten Ende des Trägerelements (3) oder im Trägerelement 3 angeordnet ist, und dass der aus dem Kollimator (6) austretende Laserstrahl im inneren des Trägerelements (3) bis zu dem Umlenkspiegel (7)geführt ist, der im Trägerelement (3) an dessen zweitem Ende installiert ist, und dass die Fokusieroptik (8) dem Umlenkspiegel (7) nachgeschaltet ist.(6) is arranged on the outside at the first end of the carrier element (3) or in the carrier element 3, and that the laser beam emerging from the collimator (6) is guided inside the carrier element (3) up to the deflecting mirror (7) which is in the carrier element (3) is installed at its second end, and that the focusing optics (8) is connected downstream of the deflecting mirror (7).
4. Vorrichtung nach einem der Ansprüche 1 bis 3,dadurch gekennzeichnet, dass das Trägerelement (3) am zweiten Ende mit einem senkrecht zu seiner Längsachse unmittelbar im Strahlengang der Fokusieroptik (8) angeordneten Spannelement (3S) versehen ist, das an beiden Enden offen und dessen Länge an die Brennweite der Fokusieroptik (8) angepasst ist, und dass der Durchmesser des Spannelements (3S) vom einem Durchmesser, der dem Durchmesser der Fokusieroptik (8) entspricht bis auf einige Millimeter am freien Ende verjüngt ist.4. Device according to one of claims 1 to 3, characterized in that the carrier element (3) is provided at the second end with a perpendicular to its longitudinal axis directly in the beam path of the focusing optics (8) arranged clamping element (3S), which is open at both ends and the length of which is adapted to the focal length of the focusing optics (8), and that the diameter of the clamping element (3S) tapers from a diameter that corresponds to the diameter of the focusing optics (8) to a few millimeters at the free end.
5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Arm (5) in einen kurzen Abschnitt (50) und einen langen Abschnitt (51) unterteilt ist, der mit einem Spannelement (5S) versehen ist, das bei geschlossener Vor- richtung (1) senkrecht zum Spannelement (3S) des Trägerelements (3) ausgerichtet ist, und dass der kürzere Abschnitt (50) des Arms (3) drehbar gehaltert ist.5. Device according to one of claims 1 to 4, characterized in that the arm (5) is divided into a short section (50) and a long section (51) which is provided with a clamping element (5S), which when closed In front- direction (1) perpendicular to the clamping element (3S) of the support element (3), and that the shorter section (50) of the arm (3) is rotatably supported.
6. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Arm (5) über eine Hebelanordnung (11) mit einer Antriebsvorrichtung (15) in mechanischer Verbindung steht. 6. Device according to one of claims 1 to 5, characterized in that the arm (5) via a lever arrangement (11) with a drive device (15) is in mechanical connection.
PCT/EP2001/008374 2000-08-05 2001-07-20 Welding device WO2002011942A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10038310A DE10038310A1 (en) 2000-08-05 2000-08-05 Welding device
DE10038310.6 2000-08-05

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WO2002011942A1 true WO2002011942A1 (en) 2002-02-14

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014017563A1 (en) * 2014-11-21 2016-05-25 Sca Schucker Gmbh & Co. Kg Device and method for joining two workpieces by means of laser welding

Citations (6)

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Publication number Priority date Publication date Assignee Title
JPS57181789A (en) * 1981-04-30 1982-11-09 Toshiba Corp Spot welder utilizing laser
JPS5847590A (en) * 1981-09-18 1983-03-19 Toshiba Corp Laser seam welder
JPH02235591A (en) * 1989-03-09 1990-09-18 Ohara Kk Portable type laser beam welding gun
US4973817A (en) * 1988-07-18 1990-11-27 Nissan Motor, Co., Ltd. Method of and apparatus for assembling vehicle body
JPH0489191A (en) * 1990-07-31 1992-03-23 Nissan Motor Co Ltd Laser welding device
WO1998006534A1 (en) * 1996-08-13 1998-02-19 Rofin-Sinar Laser Gmbh Device for connecting two components by welding

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57181789A (en) * 1981-04-30 1982-11-09 Toshiba Corp Spot welder utilizing laser
JPS5847590A (en) * 1981-09-18 1983-03-19 Toshiba Corp Laser seam welder
US4973817A (en) * 1988-07-18 1990-11-27 Nissan Motor, Co., Ltd. Method of and apparatus for assembling vehicle body
JPH02235591A (en) * 1989-03-09 1990-09-18 Ohara Kk Portable type laser beam welding gun
JPH0489191A (en) * 1990-07-31 1992-03-23 Nissan Motor Co Ltd Laser welding device
WO1998006534A1 (en) * 1996-08-13 1998-02-19 Rofin-Sinar Laser Gmbh Device for connecting two components by welding

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 007, no. 025 (M - 190) 2 February 1983 (1983-02-02) *
PATENT ABSTRACTS OF JAPAN vol. 007, no. 128 (M - 220) 3 June 1983 (1983-06-03) *
PATENT ABSTRACTS OF JAPAN vol. 014, no. 552 (M - 1056) 7 December 1990 (1990-12-07) *
PATENT ABSTRACTS OF JAPAN vol. 016, no. 314 (M - 1278) 9 July 1992 (1992-07-09) *

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