WO2002034453A1 - Procede et dispositif permettant de fermer la fente lors du soudage d'ebauches sur mesure - Google Patents

Procede et dispositif permettant de fermer la fente lors du soudage d'ebauches sur mesure Download PDF

Info

Publication number
WO2002034453A1
WO2002034453A1 PCT/CH2001/000620 CH0100620W WO0234453A1 WO 2002034453 A1 WO2002034453 A1 WO 2002034453A1 CH 0100620 W CH0100620 W CH 0100620W WO 0234453 A1 WO0234453 A1 WO 0234453A1
Authority
WO
WIPO (PCT)
Prior art keywords
elevation
welding
arrangement
parts
gap
Prior art date
Application number
PCT/CH2001/000620
Other languages
German (de)
English (en)
Inventor
Werner Urech
Original Assignee
Elpatronic Ag
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 Elpatronic Ag filed Critical Elpatronic Ag
Priority to AU2001293605A priority Critical patent/AU2001293605A1/en
Publication of WO2002034453A1 publication Critical patent/WO2002034453A1/fr

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
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/18—Sheet panels
    • B23K2101/185—Tailored blanks

Definitions

  • the invention relates to a method for closing the gap according to the preamble of claim 1 and a device according to the preamble of claim 11 and a welding device equipped therewith.
  • Welding sheet metal with the aid of a laser is a common method of joining today.
  • the sheets are preferably butt-joined to one another by positioning the end faces of the sheets to be connected such that there is no gap or only a narrow gap between the sheets.
  • the gap between the sheets to be joined should not be wider than 0.05 or 0.08 mm, so that the sum of the deviations of the two sheets must not exceed the maximum permissible gap widths.
  • the permissible inaccuracy does not have to be evenly distributed over both sheets.
  • One sheet can be precise, the other can take advantage of all the permissible inaccuracy, or the two sheets can be "differently inaccurate".
  • the invention has for its object to provide a method for closing the gap, which is easy to carry out, especially in the case of non-exclusively adjacent parts.
  • the elevation is preferably arranged off-center in the part or a plurality of elevations are arranged off-center in the part and it is further preferred if this elevation (s) is or are arranged near the edge or near the welding edge.
  • the invention is also based on the object to provide a device for gap closure, this object is achieved by the characterizing features of claim 11.
  • a welding device is to be created in which the gap between the parts can be closed, which is the subject of claim 18 '.
  • Figure 1 shows schematically in sectional view a welding device to explain the method
  • Figure 2 shows another embodiment of the
  • FIG. 3 is a diagrammatic, greatly simplified representation of welding with the welding device
  • FIG. 4 shows another arrangement of the elevations
  • FIG. 5 shows a welding device according to a further embodiment when the elevation is introduced
  • FIG. 6 shows the welding device from FIG. 5 during the positioning of the parts; and FIG. 7 shows the welding device from FIG. 5 when the elevation is applied.
  • FIG. 1 shows schematically and in a partially sectioned view a welding device to explain the method according to the invention.
  • two sheets 1, 2 are butt-welded butt-jointed by means of a laser 3, which is only indicated.
  • the welding of individual sheets to so-called blanks or tailored blanks is known.
  • Such tailored blanks are usually deformed subsequently in order to form a molded part with different properties in sections in accordance with the sheets used. To a good quality
  • the gap between the sheets before welding must have the aforementioned small width.
  • the sheet 1 which is shown as a thicker sheet than the sheet 2, is fixed between a jaw 5 and a base 7.
  • the thinner sheet 2 is also fixed between a jaw 6 and the base 7.
  • the one sheet, in the example shown the thinner sheet 2 is provided with an elevation 4, which is shown in FIG. 1 with broken lines. If this elevation 4 is unloaded, it is usually the case that the gap 10 is larger than the permissible narrow gap for laser welding, since the edges of sheets 1 and 2 no longer have to be machined with the accuracy previously required. In some places, however, the required small gap width can already be maintained, or the sheets can touch.
  • a force F is exerted on the elevation against the direction in which the elevation is shaped, so that the elevation is pressed down, as shown in FIG. 1 with solid lines as elevation 4 '.
  • this force F which can also be designated as a hold-down force
  • the free, non-clamped edge of the plate 2 pointing towards the thick plate moves towards the thick plate, so that the gap 10 is closed.
  • the hold-down force F is preferably exerted locally on the elevation 4 shortly before the welding beam reaches the metal sheets at this location.
  • Figure 2 shows a similar representation of an embodiment in which the base 7 is replaced by a magnetic plate 7 ', so that the jaws 5 and 6 can be omitted. Otherwise, the procedure is the same as in Figure 1 and the same reference numerals again designate the same parts or positions.
  • FIG. 3 shows a perspective view of a welding device similar to that of FIG. 1 or 2, the holding of the sheets 1 and 2 not being shown, but the same reference numerals, however, denoting the same elements.
  • the elevation 4 is shown in the 3 created by an uninterrupted bead 4 in the sheet 2, which bead runs substantially parallel to the edge of the sheet 2 pointing towards the thicker sheet 1. It is also shown in FIG. 3 that the sheets 1 and 2 abut one another along curved edges, which, as an embodiment of so-called non-linear tailored blanks, is difficult to control for the known gap closure methods. It is further shown in FIG.
  • the hold-down force F is exerted by a hold-down roller 12 which acts slightly on the elevation 4 leading the welding beam 3 'and thus, as explained above with reference to FIGS. 1 and 2, the gap between the Sheet metal closes to admissible values and holds closed for welding.
  • the sheet metal is deformed by the hold-down force F and, in the case of the other embodiments shown, generally only elastically and not plastically.
  • the roller 12 is guided by a drive, not shown, which can be the same drive as that used to guide the laser beam along the workpiece.
  • the hold-down force is generated, for example pneumatically or hydraulically, by an actuator 12 'which is only indicated.
  • the exertion of force on the elevation can always take place with the same force, or the force F can vary.
  • the gap width is preferably checked, which can be done, for example, by optical means, and the hold-down force is increased or decreased on the basis of the gap width determined.
  • the elevation 4 shown as a continuous bead along the edge in FIG. 3 can also be partially interrupted, so that sections with an elevation and sections without one follow.
  • the course of the elevation 4 also does not have to be parallel to the edge everywhere, but can in some cases have a different course from the edge.
  • FIG. 4 shows a top view of two sheets 1 and 2, which also adjoin each other with a non-linear, since angled edge.
  • the sheet metal 2 is provided with a plurality of individual elevations 4, which are designed as, for example, circular raised areas. These elevations 4 can also be run over by a hold-down roller 12 in order to locally close the gap between the sheets 1 and 2.
  • Gaps usually without plastic deformation of the edges. There is therefore no need to make a precise cut of the edges, which is very expensive, particularly with non-linear sheet metal edges, and because of the warping of the blanks after punching, internal stresses (relaxation) do not usually lead to a zero gap.
  • the elevations or the bead can either be introduced before the sheet metal is clamped in the welding device, for example when punching the sheet metal parts, or it can be carried out when the sheet metal is clamped in the welding device, which is now explained with reference to FIGS. 5-7.
  • FIGS. 5-7 show a view similar to that of Figure 1, again with the same reference numerals designating the same parts.
  • the clamping jaw 6 and the base 7 are designed with a device for generating an elevation 4 and for exerting the pressure thereon.
  • FIG. 5 shows that the thin sheet is clamped between the base 7 and the clamping jaw 6, while the thicker sheet 2 is not yet clamped by the clamping jaw.
  • an elastically deformable profile 12 or 13 is inserted, which is, for example, a polyurethane profile.
  • a polyurethane profile By means of pressurizable hollow chambers 14 and 15 in the profiles, deformation thereof can be achieved.
  • Figure 5 shows how the hollow chamber 15 of the profile 13 is depressurized and the hollow chamber 14 of the profile 12 is put under pressure, in particular hydraulic pressure, so that the profile 12 bulges outwards over the surface of the base 7 and thereby provides the thinner sheet 2 with a bead by the sheet 2 plastically or elastically is deformed towards the top, which is possible due to the unpressurized cavity 15, which allows a corresponding deformation of the profile 13. Due to the deformation of the sheet 2, its free edge retracts in the direction of arrow B.
  • FIG. 6 now shows how the thicker sheet 2 is pushed against the thinner sheet according to arrow C and is also clamped.
  • the hollow chambers are depressurized, if the beads are only inserted in the elastic area of the material, the lower profile remains under pressure during this process.
  • the sheets now lie against each other, but due to the edges machined with low precision, the width of the gap between the sheets is not sufficiently small or unevenly wide to be able to carry out the beam welding without errors.
  • the hold-down force is therefore exerted on the elevation 4 in order to press the sheet edge of the thinner sheet against the edge of the thicker sheet.
  • the lower cavity 14 of the profile 12 is depressurized and a pressure, preferably hydraulic pressure, is built up in the upper cavity 15 of the profile 13, and the convex side of the previously formed bead is loaded with the holding-down force from its convex side , This closes the gap and the sheet metal combination is ready for welding.
  • a pressure preferably hydraulic pressure
  • the bead is reshaped to a greater or lesser extent, the reshaping generally being carried out only elastically.
  • the cavity 15 can be a single cavity that can be filled over its entire length simultaneously and with the same pressure, so that the entire length of the bead is applied simultaneously.
  • the cavity 15 it is also possible to subdivide the cavity 15 into several sections, each of which can be pressurized individually, optionally at different times and with different pressure. If the sheet metal is only deformed elastically by the pressure in the cavity 14, it may also suffice to relieve only this pressure in the cavity 14 in order to achieve an elastic recovery for closing the gap. A higher pressure can also be built up in the cavity 15, which brings about a reshaping against the pressure in the cavity 14 in order to close the gap.
  • the welding can now be carried out with a closed gap, whereby the bead can be relieved again after the welding.
  • the bead is usually stretched flat again when the tailored blank welded in this way is subsequently formed and is then no longer visible.

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Laser Beam Processing (AREA)

Abstract

L'invention vise à fermer la fente lors du soudage laser d'ébauches sur mesure. A cet effet, la tôle est pourvue de surélévations qui sont aplaties, lors du soudage, pour fermer la fente localement.
PCT/CH2001/000620 2000-10-25 2001-10-17 Procede et dispositif permettant de fermer la fente lors du soudage d'ebauches sur mesure WO2002034453A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001293605A AU2001293605A1 (en) 2000-10-25 2001-10-17 Method and device for closing the gap during the welding of tailored blanks

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2085/00 2000-10-25
CH20852000 2000-10-25

Publications (1)

Publication Number Publication Date
WO2002034453A1 true WO2002034453A1 (fr) 2002-05-02

Family

ID=4567445

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH2001/000620 WO2002034453A1 (fr) 2000-10-25 2001-10-17 Procede et dispositif permettant de fermer la fente lors du soudage d'ebauches sur mesure

Country Status (2)

Country Link
AU (1) AU2001293605A1 (fr)
WO (1) WO2002034453A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013101171A1 (de) * 2012-10-04 2014-04-10 Brandenburgische Technische Universität Cottbus-Senftenberg Strukturierte Tailored Blanks

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0258454A1 (fr) * 1986-02-28 1988-03-09 Kawasaki Steel Corporation Procede et dispositif pour couper et souder des courroies d'acier
JPS63165072A (ja) * 1986-12-25 1988-07-08 Toyota Motor Corp 鋼板の突き合せ溶接方法
JPS63309396A (ja) * 1987-06-12 1988-12-16 Toyota Motor Corp 薄板の突き合わせ溶接における板の突き合わせ方法
EP0565088A1 (fr) * 1992-04-09 1993-10-13 Toyota Jidosha Kabushiki Kaisha Appareil et méthode de fabriquer deux ou plusieurs différents types de panneaux soudés
US5550345A (en) * 1992-04-12 1996-08-27 Elpatronic Ag Process and device for welding sheets by laser to form compound sheets
DE19624776C1 (de) * 1996-06-21 1997-09-04 Krupp Ag Hoesch Krupp Verfahren zum Herstellen geschweißter Stahlblechplatinen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0258454A1 (fr) * 1986-02-28 1988-03-09 Kawasaki Steel Corporation Procede et dispositif pour couper et souder des courroies d'acier
JPS63165072A (ja) * 1986-12-25 1988-07-08 Toyota Motor Corp 鋼板の突き合せ溶接方法
JPS63309396A (ja) * 1987-06-12 1988-12-16 Toyota Motor Corp 薄板の突き合わせ溶接における板の突き合わせ方法
EP0565088A1 (fr) * 1992-04-09 1993-10-13 Toyota Jidosha Kabushiki Kaisha Appareil et méthode de fabriquer deux ou plusieurs différents types de panneaux soudés
US5550345A (en) * 1992-04-12 1996-08-27 Elpatronic Ag Process and device for welding sheets by laser to form compound sheets
DE19624776C1 (de) * 1996-06-21 1997-09-04 Krupp Ag Hoesch Krupp Verfahren zum Herstellen geschweißter Stahlblechplatinen

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 012, no. 432 (M - 763) 15 November 1988 (1988-11-15) *
PATENT ABSTRACTS OF JAPAN vol. 013, no. 148 (M - 812) 11 April 1989 (1989-04-11) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013101171A1 (de) * 2012-10-04 2014-04-10 Brandenburgische Technische Universität Cottbus-Senftenberg Strukturierte Tailored Blanks

Also Published As

Publication number Publication date
AU2001293605A1 (en) 2002-05-06

Similar Documents

Publication Publication Date Title
DE69317303T2 (de) Selbststanzende nieten
DE102012108161B4 (de) Verfahren und Vorrichtung zum Verbinden von Metallbändern
EP0565846B1 (fr) Procédé et dispositif pour le soudage de tÔles métalliques
DE69403932T2 (de) Bearbeitungsstation mit Stümpfpositionierung und Laserstrahlschweissen von zwei Blechkanten
EP0743133B1 (fr) Procédé et dispositif pour joindre deux pièces métalliques
DE102006029292A1 (de) Schweißverfahren für dünne Bleche
DE2312362B2 (de) Zusatzeinrichtung für eine Schweißmaschine zum Verschweißen und Entgraten von Kunststoffprofilen
EP0743132B1 (fr) Dispositif de jonction de deux pièces
EP2903790A1 (fr) Procédé et unité d'outil pour ajuster une fente de découpe
EP0804992B1 (fr) Procédé et dispositif pour la mise en oeuvre de la pression de soudage lors du soudage continu à la molette
WO2002034453A1 (fr) Procede et dispositif permettant de fermer la fente lors du soudage d'ebauches sur mesure
EP0147370B1 (fr) Procédé de guidage des bords d'un élément de fer étamé enroulé en cylindre ainsi que dispositif de guidage
EP2528708B1 (fr) Dispositif et procédé de guidage de bandes à assembler entre elles le long de leurs arêtes longitudinales à l'aide de poulies de renvoi
DE4432639C2 (de) Verfahren und Vorrichtung zum Verbinden zweier oder mehrerer Blechlagen
DE3510779A1 (de) Verfahren zum verbinden von zwei oder mehr blechen
DE102011002023A1 (de) Verfahren und Vorrichtung zum Laserstrahlschweißen von Blechen
EP1210998B1 (fr) Procédé et dispositif pour la fabrication d'un profil métallique
EP3088096A1 (fr) Dispositifs et procédé de formage par pression de barrettes de liaison entre des parties d'une pièce à usiner en plaques
DE69809215T2 (de) Verfahren zur positionierung zweier bleche zum stumpfaneinanderschweissen mittels eines hochenergetischen dichtestrahls
EP3088097B1 (fr) Dispositifs et procédé de formage par pression de barrettes de liaison entre des parties d'une pièce à usiner en plaques
DE10261507A1 (de) Verfahren zum Laserschweißen und lasergeschweißtes Bauteil
DE102018121386A1 (de) Verbinden von Blechendabschnitten mittels Umformen
EP1862234A2 (fr) Dispositif de formage de profilés creux
DE4207017C2 (de) Laser-Schweißvorrichtung
EP4349553A1 (fr) Procédé de finition de bords

Legal Events

Date Code Title Description
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP