DE102004044601A1 - Automotive manufacturing laser welding assembly for galvanised body panels has clamps creating de-gassing cap at weld seam - Google Patents
Automotive manufacturing laser welding assembly for galvanised body panels has clamps creating de-gassing cap at weld seam Download PDFInfo
- Publication number
- DE102004044601A1 DE102004044601A1 DE102004044601A DE102004044601A DE102004044601A1 DE 102004044601 A1 DE102004044601 A1 DE 102004044601A1 DE 102004044601 A DE102004044601 A DE 102004044601A DE 102004044601 A DE102004044601 A DE 102004044601A DE 102004044601 A1 DE102004044601 A1 DE 102004044601A1
- Authority
- DE
- Germany
- Prior art keywords
- welding
- clamping elements
- welding device
- deformation
- sheets
- 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.)
- Ceased
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
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/035—Aligning the laser beam
- B23K26/037—Aligning the laser beam by pressing on the workpiece, e.g. pressing roller foot
-
- 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
- B23K26/244—Overlap 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
- B23K26/20—Bonding
- B23K26/32—Bonding taking account of the properties of the material involved
-
- 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
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
-
- 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
- B23K2101/34—Coated articles, e.g. plated or painted; Surface treated articles
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Laser Beam Processing (AREA)
Abstract
Description
Die Erfindung betrifft eine Schweißvorrichtung zum Verbinden von zumindest teilweise überlappend angeordneten beschichteten, insbesondere verzinkten Blechen mittels eines verfahrbaren Laserstrahles.The The invention relates to a welding device for connecting coated, at least partially overlapping, in particular galvanized sheets by means of a movable laser beam.
Korrosionsgefährdete Bauteile aus Stahlblech werden, insbesondere im Automobilbau, zunehmend mit einer einseitigen oder beidseitigen Oberflächenbeschichtung z.B. aus Zink versehen. Zum Schweißen solcher Blechbauteile wird bekannter Weise das Verfahren des Laserschweißens angewendet. Durch die vergleichsweise niedrige Verdampfungstemperatur des Zinks der Oberflächenbeschichtung kann es zur Bildung von Löchern bzw. Poren innerhalb der Schweißnaht kommen, welche die Festigkeit der Schweißverbindung erheblich herabsetzen. Zur Vermeidung dieses Problems muss der entstehende Zinkdampf aus dem Bereich der Schweißnaht entweichen können. Dieses wird bekannter Weise dadurch unterstützt, dass die überlappend angeordneten zu verschweißenden Blechbauteile im Überlappungsbereich nicht vollflächig aufeinander liegen, sondern dass zwischen ihnen ein Spalt offen gehalten wird, durch den der entstehende Zinkdampf entweichen kann.Corrosion-endangered components made of sheet steel, especially in the automotive industry, increasingly with a unilateral or bilateral surface coating e.g. made of zinc Mistake. For welding Such sheet metal components, the method of laser welding is known manner used. Due to the comparatively low evaporation temperature of the zinc the surface coating it can lead to the formation of holes or pores within the weld come, which significantly reduce the strength of the welded joint. To avoid this problem, the resulting zinc vapor must be out the area of the weld can escape. This is known manner supported by the overlapping arranged to be welded Sheet metal components in the overlapping area not full surface lie on top of each other, but that between them open a gap held by the resulting zinc vapor can escape.
Zur
Realisierung dieses Spaltes sind im Stand der Technik unterschiedliche
Verfahren und Vorrichtungen beschrieben. Aus der
Als nachteilig bei den genannten Verfahren erweist sich die Tatsache, dass zum Teil sehr zeitaufwändige und kostenintensive vorbereitende Maßnahmen für das Verschweißen der Blechbauteile erforderlich sind. Die Einrichtungen zur Erzeugung der Noppen müssen bei Bauteiländerungen unter Umständen aufwändig an die neuen Voraussetzungen angepasst werden.When disadvantageous in the mentioned methods is the fact that sometimes very time consuming and costly preparatory measures for welding the Sheet metal components are required. The facilities for production need the pimples at component changes in certain circumstances costly adapted to the new conditions.
Vor diesem Hintergrund liegt der Erfindung die Aufgabe zugrunde, eine Schweißvorrichtung zur Verfügung zu stellen, mittels welcher die Zinkentgasung ohne vorbereitende Maßnahmen gewährleistet werden kann.In front In this background, the invention is based on the object welder to disposal by means of which the zinc degassing without preparatory activities be guaranteed can.
Diese Aufgabe wird gelöst mit einer Schweißvorrichtung gemäß den Merkmalen des Patentanspruchs 1. Die Unteransprüche betreffen besonders zweckmäßige Weiterbildungen der Erfindung.These Task is solved with a welding device according to the characteristics of the claim 1. The dependent claims relate to particularly expedient developments the invention.
Erfindungsgemäß ist also eine Schweißvorrichtung vorgesehen, bei welcher die Bleche in Schweißrichtung seitlich neben dem Laserstrahl zwischen zumindest zwei annähernd mit einer Schweißvorschubgeschwindigkeit mitlaufenden Spannelementen angeordnet sind, durch welche eine lokale Verformung im Bereich einer Schweißstelle erzeugbar ist. Aufgrund von unterschiedlichen Eigenschaften, bedingt durch Werkstoff, Geometrie und Blechdicke werden die Bleche durch die Spannelemente nicht gleichmäßig zusammengedrückt, sondern es entsteht eine Verformung, welche eine Zinkentgasung ermöglicht. Hierdurch wird ohne aufwändige vorgelagerte Maßnahmen prozesssimultan zum eigentlichen Schweißvorgang ein Entgasungsspalt für die Zinkentgasung zur Verfügung gestellt. Die Notwendigkeit der Einprägung von Noppen oder Sicken in die Bleche ist somit nicht mehr erforderlich. Bei der erzeugten Verformung handelt es sich primär um eine elastische Verformung. Je nach einwirkendem Druck kann allerdings auch eine plastische Verformung zurückbleiben.According to the invention is thus a welding device provided in which the sheets in the welding direction laterally next to the Laser beam between at least two approximately at a welding feed speed running clamping elements are arranged, through which a local deformation in the area of a weld can be generated. Due to different characteristics, conditional through material, geometry and sheet thickness, the sheets are through the clamping elements are not uniformly compressed, but it creates a deformation which allows a zinc degassing. This is without consuming upstream activities Process simultaneously to the actual welding process, a degassing gap for the Zinc degassing available posed. The necessity of imprinting nubs or beads in the sheets are therefore no longer required. In the generated Deformation is primary around an elastic deformation. Depending on the pressure applied, however also remain a plastic deformation.
Dabei erweist es sich als besonders vorteilhaft, wenn die Spannelemente an einer den Laserstrahl erzeugenden Laserbearbeitungsoptik fixiert sind. Hierdurch werden der Laserstrahl und die die Verformung erzeugenden Spannelemente simultan entlang des Verbindungsbereiches der Bleche bewegt und es ist gewährleistet, dass die Verformung und dadurch der Entgasungsspalt zu jedem Zeitpunkt im Bereich der Schweißstelle erzeugt wird.there proves to be particularly advantageous if the clamping elements are fixed to a laser beam generating laser processing optics. As a result, the laser beam and the deformation generating Clamping elements simultaneously along the connection area of the sheets moved and it is guaranteed that the deformation and thereby the degassing gap at any time in the area of the weld is produced.
In einer anderen angewandelten Variante der vorliegenden Schweißvorrichtung ist zumindest einem der Spannelemente ein Antrieb zugeordnet. Der Vorteil eines separaten Antriebes liegt in der Entkopplung von der den Laserstrahl erzeugenden Laserbearbeitungsoptik. Hierdurch können Schweißnahtfehler reduziert werden, da unerwünschte Bewegungen der Spannelemente beispielsweise aufgrund von Unebenheiten in den Blechen nicht direkt auf die Laserbearbeitungsoptik übertragen werden.In another applied variant of the present welding device At least one of the clamping elements is associated with a drive. The advantage a separate drive is the decoupling of the laser beam generating laser processing optics. This can reduce weld defects, there unwanted Movements of the clamping elements, for example, due to bumps in the sheets are not transferred directly to the laser processing optics become.
Eine weitere ebenfalls besonders vorteilhafte Ausführungsform wird auch dadurch erreicht, dass die Spannelemente senkrecht zur Schweißrichtung versetzt nebeneinander angeordnet sind. Der Versatz der Spannelemente bewirkt, dass die Bleche sich verformen, wobei davon ausgegangen werden kann, dass die Bleche sich unterschiedlich verformen und damit ein kleiner, bei einer elastischen Verformung auch nur temporärer Spalt entsteht, der allerdings zur Zinkentgasung ausreicht.A Another particularly advantageous embodiment is also characterized ensures that the clamping elements offset perpendicular to the welding direction are arranged side by side. The offset of the clamping elements causes that the sheets deform, it being possible to assume that the sheets deform differently and thus a smaller, with elastic deformation also only temporary gap arises, which however sufficient for zinc degassing.
In einer anderen zweckmäßigen Weiterbildung sind die Spannelemente in Schweißrichtung versetzt hintereinander angeordnet. Diese Variante kommt vor allem bei räumlich eingeschränkten Verhältnissen, beispielsweise beim Schweißen in einem Flanschbereich zum Einsatz.In another expedient development, the clamping elements are offset in the welding direction arranged one behind the other. This variant is mainly used in space-constrained conditions, for example, when welding in a flange area used.
Besonders praxisnah ist dabei eine andere Ausgestaltung nach welcher die Spannelemente als Spannrollen ausgebildet sind. Der Vorschub der Spannrollen entlang der Bleche erfolgt hierbei durch ein Abrollen der Spannelemente auf den Blechen, wodurch die Reibung weitestgehend reduziert werden kann.Especially In practice, another embodiment according to which the clamping elements are designed as tension rollers. The feed of the tension rollers along The sheets are made by unrolling the clamping elements on the sheets, whereby the friction is largely reduced can.
Eine andere besonders zweckmäßige Weiterbildung der Erfindung wird auch dadurch geschaffen, dass zumindest eine der Spannrollen auf dem Umfang verteilte Verformungselemente aufweist. Durch diese Verformungselemente wird die Verformung der Bleche im Bereich der Schweißstelle des Laserstrahls besonders positiv beeinflusst, so dass die beim Schweißen der Bleche entstehenden Zinkgase ungehindert entweichen können. Dabei können die Verformungselemente auch auf beiden Spannrollen angeordnet sein.A other particularly useful training The invention is also achieved in that at least one the tensioning rollers distributed on the circumference deformation elements. By These deformation elements will affect the deformation of the sheets in the area the weld the laser beam is particularly positively influenced, so that the welding The plates can escape unhindered zinc gases. there can they Deformation be arranged on both tension rollers.
Die Erfindung lässt zahlreiche Ausführungsformen zu. Zur weiteren Verdeutlichung ihres Grundprinzips ist eine davon in der Zeichnung dargestellt und wird nachfolgend beschrieben. Diese zeigt inThe Invention leaves numerous embodiments to. To further clarify its basic principle is one of them shown in the drawing and will be described below. These shows in
- 11
- Schweißvorrichtungwelder
- 22
- Blechsheet
- 33
- Blechsheet
- 44
- Laserstrahllaser beam
- 55
- Schweißrichtungwelding direction
- 66
- Spannelementclamping element
- 77
- Spannelementclamping element
- 88th
- Schweißstelleweld
- 99
- Verformungdeformation
- 1010
- Entgasungsspaltdegassing gap
- 1111
- Spannrolleidler
- 1212
- Spannrolleidler
- 1313
- Verformungselementflexure
- 1414
- Richtungspfeilarrow
- 1515
- Drehachseaxis of rotation
- 1616
- Drehachseaxis of rotation
- 1717
- Achsversatzaxial offset
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004044601A DE102004044601A1 (en) | 2004-09-13 | 2004-09-13 | Automotive manufacturing laser welding assembly for galvanised body panels has clamps creating de-gassing cap at weld seam |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004044601A DE102004044601A1 (en) | 2004-09-13 | 2004-09-13 | Automotive manufacturing laser welding assembly for galvanised body panels has clamps creating de-gassing cap at weld seam |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102004044601A1 true DE102004044601A1 (en) | 2006-03-30 |
Family
ID=36011444
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102004044601A Ceased DE102004044601A1 (en) | 2004-09-13 | 2004-09-13 | Automotive manufacturing laser welding assembly for galvanised body panels has clamps creating de-gassing cap at weld seam |
Country Status (1)
Country | Link |
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DE (1) | DE102004044601A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008054040A1 (en) | 2008-10-31 | 2010-05-06 | Audi Ag | Method for the production of metal sheet connection through seam welding by laser beam, comprises galvanizing the metal sheet connection, where a welding device is associated to a pressure element influencing on one of the components |
DE102010029477A1 (en) | 2010-05-28 | 2011-12-01 | Scansonic Mi Gmbh | Method and device for laser joining sheet metal parts |
DE102011103246A1 (en) * | 2011-06-03 | 2012-12-06 | Volkswagen Aktiengesellschaft | Method and device for joining components by means of energy-beam welding |
DE102017218867A1 (en) | 2017-10-23 | 2019-04-25 | Audi Ag | Method for actuating a clamping device, in particular for sheets, and corresponding clamping device |
-
2004
- 2004-09-13 DE DE102004044601A patent/DE102004044601A1/en not_active Ceased
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008054040A1 (en) | 2008-10-31 | 2010-05-06 | Audi Ag | Method for the production of metal sheet connection through seam welding by laser beam, comprises galvanizing the metal sheet connection, where a welding device is associated to a pressure element influencing on one of the components |
DE102010029477A1 (en) | 2010-05-28 | 2011-12-01 | Scansonic Mi Gmbh | Method and device for laser joining sheet metal parts |
WO2011147891A1 (en) | 2010-05-28 | 2011-12-01 | Scansonic Mi Gmbh | Method and device for laser-joining sheet metal parts |
DE102011103246A1 (en) * | 2011-06-03 | 2012-12-06 | Volkswagen Aktiengesellschaft | Method and device for joining components by means of energy-beam welding |
WO2012163477A1 (en) | 2011-06-03 | 2012-12-06 | Volkswagen Aktiengesellschaft | Method and device for joining components by means of energy beam welding |
DE102017218867A1 (en) | 2017-10-23 | 2019-04-25 | Audi Ag | Method for actuating a clamping device, in particular for sheets, and corresponding clamping device |
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