DE10248402B3 - Laser beam welding device for sheet metal panels, e.g. in automotive industry, with deformation of free edge of one sheet metal panel to provide flow gap for escape of vapor resulting from welding process - Google Patents
Laser beam welding device for sheet metal panels, e.g. in automotive industry, with deformation of free edge of one sheet metal panel to provide flow gap for escape of vapor resulting from welding process Download PDFInfo
- Publication number
- DE10248402B3 DE10248402B3 DE10248402A DE10248402A DE10248402B3 DE 10248402 B3 DE10248402 B3 DE 10248402B3 DE 10248402 A DE10248402 A DE 10248402A DE 10248402 A DE10248402 A DE 10248402A DE 10248402 B3 DE10248402 B3 DE 10248402B3
- Authority
- DE
- Germany
- Prior art keywords
- sheet metal
- sheet
- welding
- laser beam
- coating
- 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.)
- Expired - Fee Related
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
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/34—Coated articles, e.g. plated or painted; Surface treated articles
- B23K2101/35—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)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
Description
Die Erfindung bezieht sich auf eine Vorrichtung zum Schweißen von Blechverbindungen mittels eines Laserstrahls gemäß Oberbegriff des Patentanspruches 1.The invention relates to a Welding device of sheet metal connections using a laser beam according to the preamble of claim 1.
Wie bei allen Schmelzschweißverfahren verursachen auch beim Laserstrahlschweißen Verunreinigungen (Lacke, Öle, Fett, Oxidschicht, Zink) auf der Blechoberfläche innere Nahtfehler, wie z.B. Poren, Risse und Löcher. Werden andererseits hohe Anforderungen an die Schweißnahtqualität gestellt, wie dies im Karosseriebau der Fall ist (Festigkeit und Dichtigkeit im Außenbereich), so müssen die zu verbindenden Bauteile für das Schweißverfahren entsprechend vorbereitet werden.As with all fusion welding processes also cause contamination during laser beam welding (paints, oils, grease, Oxide layer, zinc) on the sheet surface internal seam defects, such as e.g. Pores, cracks and holes. On the other hand, if high demands are placed on the weld quality, as is the case in body construction (strength and tightness outside), so must the components to be connected for the welding processes be prepared accordingly.
Das Laserstrahlschweißen von Überlappstößen verzinkter Bleche, bei denen die Zinkschichten zweier Bleche einander zugewandt sind, ist als kritisch anzusehen. Daher müssen besondere Vorkehrungen getroffen werden. Dazu gehört in erster Linie die Bereitstellung von Abströmräumen, die der Aufnahme bzw. dem Entweichen von sich bildendem Zinkdampf dienen sollen. Um ein Abströmen des Zinkdampfes zu ermöglichen, ist z.B. ein wenigstens einseitig offener Abströmspalt zwischen den Blechen erforderlich. Die dazu benötigte Spaltweite beträgt nur einen Bruchteil der Blechdicke. Zur Schaffung eines Abströmspaltes und zur Einhaltung einer optimalen Spaltweite während des Schweißvorganges sind verschiedene Lösungen bekannt.Laser beam welding of overlap joints galvanized Sheets in which the zinc layers of two sheets face each other are to be regarded as critical. Therefore, special arrangements must be made to be hit. That is part of it primarily the provision of outflow spaces that are suitable for the intake or serve to escape the evolving zinc vapor. To a outflow of zinc vapor is possible e.g. an outflow gap between the sheets which is open at least on one side required. The gap width required for this is only a fraction of the sheet thickness. To create an outflow gap and to maintain an optimal gap width during the welding process are different solutions known.
In der
Die
Gemäß der
Die
Bei der US-Patentschrift 4,745,257 werden seitlich neben dem Schweißnahtverlauf Randflansche von Ober- und Unterblechen in der Weise von einer Spannvorrichtung gehalten und beabstandet, dass ein definierter Abströmspalt verbleibt.U.S. Patent 4,745,257 edge flanges from the upper and washers held in the manner of a jig and spaced that a defined outflow gap remains.
Um beim Laserstrahlschweißen ein
optimales Ergebnis zu erhalten müssen
weiterhin die miteinander zu verbindenden Bleche im Überlappungsbereich
aneinander liegen. Ein eventuell vorhandener Spalt zwischen den
Blechen darf nur ein Bruchteil der Blechdicke betragen. Diese geringen
Fertigungstoleranzen lassen sich jedoch in der Regel beim Herstellungsprozess
(z.B. Tiefziehen) nicht erreichen, so dass die Ungleichmäßigkeiten
und Ungenauigkeiten in der Blechkontur die geforderten Toleranzen überschreiten.
Um hier Abhilfe zu schaffen werden während des Schweißprozesses
beispielsweise Anpressrollen (
Die
Der Erfindung liegt die Aufgabe zugrunde, eine gattungsgemäße Vorrichtung zum Schweißen von Blechverbindungen mittels eines Laserstrahles so weiter zu bilden, dass mit minimalem Aufwand einerseits gewährleistet ist, dass die zu verschweißende Bleche im Bereich der Schweißstelle zuverlässig aneinander liegen und in gleicher Weise ein zuverlässiges Abströmen eines während des Schweißvorganges entstehenden Überzug-Dampfes gewährleistet ist.The invention is based on the object a generic device for welding to form sheet metal connections by means of a laser beam, that on the one hand it is guaranteed with minimal effort that the welded Sheets in the area of the weld reliable lie against each other and in the same way a reliable outflow of a while of the welding process resulting coating steam guaranteed is.
Diese Aufgabe wird erfindungsgemäß mit den Merkmalen des Patentanspruches 1 gelöst.This object is achieved with the Features of claim 1 solved.
Es hat sich in Versuchen gezeigt, dass durch die erfindungsgemäße Anordnung bzw. Zuordnung zueinander von Andrückelement und Auflage sowie durch geeignete Wahl der Andrückkraft erreichen lässt, dass ein zwar nur schmaler Abströmspalt entsteht, dass dieser aber durchaus ausreicht, ein zuverlässiges Abströmen des Überzug-Dampfes zu gewährleisten.It has been shown in tests that the arrangement or assignment according to the invention of the pressing element and the support, as well as a suitable choice of the pressing force, achieve that although there is only a narrow outflow gap, this is quite sufficient to ensure a reliable outflow of the coating steam.
Vorteilhafte Weiterbildungen und Ausgestaltungen der Erfindung sind mit den Unteransprüchen beansprucht.Advantageous further training and Embodiments of the invention are claimed with the subclaims.
Anhand einer Zeichnung wird die Erfindung näher erläutert.The invention is based on a drawing explained in more detail.
Die einzige Figur zeigt schematisch
eine Vorrichtung 1 zum Schweißen
zweier verzinkter Bleche
Die auf das obere Blech
Es hat sich als vorteilhaft herausgestellt,
die Konturstücke
Ein Roboter zur Führung der Vorrichtung
Die nachfolgende Tabelle spiegelt
bisherige Versuchsergebnisse wieder. In Abhängigkeit verschiedener Blechstärken von
oberem und unterem Blech
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10248402A DE10248402B3 (en) | 2002-10-17 | 2002-10-17 | Laser beam welding device for sheet metal panels, e.g. in automotive industry, with deformation of free edge of one sheet metal panel to provide flow gap for escape of vapor resulting from welding process |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10248402A DE10248402B3 (en) | 2002-10-17 | 2002-10-17 | Laser beam welding device for sheet metal panels, e.g. in automotive industry, with deformation of free edge of one sheet metal panel to provide flow gap for escape of vapor resulting from welding process |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10248402B3 true DE10248402B3 (en) | 2004-06-09 |
Family
ID=32308462
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10248402A Expired - Fee Related DE10248402B3 (en) | 2002-10-17 | 2002-10-17 | Laser beam welding device for sheet metal panels, e.g. in automotive industry, with deformation of free edge of one sheet metal panel to provide flow gap for escape of vapor resulting from welding process |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10248402B3 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10259604B4 (en) * | 2002-12-19 | 2005-05-19 | Tünkers Maschinenbau Gmbh | Device with a high energy or laser welding device and a forming device for high energy, in particular for laser welding of coated sheets, e.g. of body panels or body parts in vehicle construction |
US20210078105A1 (en) * | 2018-04-23 | 2021-03-18 | Magna Seating Inc | Lap welding with designed gap for increased joint strenght |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4745257A (en) * | 1984-04-02 | 1988-05-17 | Mitsubishi Denki Kabushiki Kaisha | Laser welding method |
DE3812448C1 (en) * | 1988-04-14 | 1989-06-15 | Bayerische Motoren Werke Ag, 8000 Muenchen, De | |
DE3933408C2 (en) * | 1989-10-06 | 1991-01-24 | Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De | |
DE3909471C2 (en) * | 1988-06-21 | 1993-10-07 | Fraunhofer Ges Forschung | Lap joint for welding coated workpieces using laser radiation |
DE4415035C2 (en) * | 1994-04-29 | 1996-11-28 | Audi Ag | Device for producing sheet metal connections by seam welding using a laser beam |
DE4403999C2 (en) * | 1994-02-09 | 1996-12-19 | Ford Werke Ag | Device for welding two- or multi-layer sheet metal components along an interrupted or continuous weld |
DE19854217C2 (en) * | 1998-11-24 | 2002-05-02 | Bayerische Motoren Werke Ag | Laser beam welding process for lap seams on coated metal sheets |
FR2822400A1 (en) * | 2001-03-26 | 2002-09-27 | Commissariat Energie Atomique | Welding of zinc-coated steel sheet, uses wheel with larger and smaller diameter rims to separate sheets to allow lateral release of gases generated during welding |
-
2002
- 2002-10-17 DE DE10248402A patent/DE10248402B3/en not_active Expired - Fee Related
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4745257A (en) * | 1984-04-02 | 1988-05-17 | Mitsubishi Denki Kabushiki Kaisha | Laser welding method |
DE3812448C1 (en) * | 1988-04-14 | 1989-06-15 | Bayerische Motoren Werke Ag, 8000 Muenchen, De | |
DE3909471C2 (en) * | 1988-06-21 | 1993-10-07 | Fraunhofer Ges Forschung | Lap joint for welding coated workpieces using laser radiation |
DE3933408C2 (en) * | 1989-10-06 | 1991-01-24 | Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De | |
DE4403999C2 (en) * | 1994-02-09 | 1996-12-19 | Ford Werke Ag | Device for welding two- or multi-layer sheet metal components along an interrupted or continuous weld |
DE4415035C2 (en) * | 1994-04-29 | 1996-11-28 | Audi Ag | Device for producing sheet metal connections by seam welding using a laser beam |
DE19854217C2 (en) * | 1998-11-24 | 2002-05-02 | Bayerische Motoren Werke Ag | Laser beam welding process for lap seams on coated metal sheets |
FR2822400A1 (en) * | 2001-03-26 | 2002-09-27 | Commissariat Energie Atomique | Welding of zinc-coated steel sheet, uses wheel with larger and smaller diameter rims to separate sheets to allow lateral release of gases generated during welding |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10259604B4 (en) * | 2002-12-19 | 2005-05-19 | Tünkers Maschinenbau Gmbh | Device with a high energy or laser welding device and a forming device for high energy, in particular for laser welding of coated sheets, e.g. of body panels or body parts in vehicle construction |
US20210078105A1 (en) * | 2018-04-23 | 2021-03-18 | Magna Seating Inc | Lap welding with designed gap for increased joint strenght |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8100 | Publication of the examined application without publication of unexamined application | ||
8364 | No opposition during term of opposition | ||
R084 | Declaration of willingness to licence | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |