EP0610559A1 - Clamping and/or clinch joining apparatus - Google Patents

Clamping and/or clinch joining apparatus Download PDF

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Publication number
EP0610559A1
EP0610559A1 EP93118880A EP93118880A EP0610559A1 EP 0610559 A1 EP0610559 A1 EP 0610559A1 EP 93118880 A EP93118880 A EP 93118880A EP 93118880 A EP93118880 A EP 93118880A EP 0610559 A1 EP0610559 A1 EP 0610559A1
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EP
European Patent Office
Prior art keywords
clamping
joining
workpiece support
load
device frame
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.)
Granted
Application number
EP93118880A
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German (de)
French (fr)
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EP0610559B1 (en
Inventor
Hansjoachim Klein
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DESTACO Europe GmbH
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DE STA CO Metallerzeugnisse GmbH
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Publication of EP0610559A1 publication Critical patent/EP0610559A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/03—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal otherwise than by folding
    • B21D39/031—Joining superposed plates by locally deforming without slitting or piercing

Definitions

  • the invention relates to a clamping and / or joining device for the precise, punctual fixing of two objects, in particular flat workpieces, such as sheets or the like. According to the preamble of claim 1.
  • Devices of this type are known, for example, from DE-A-38 22 377, in which case it is specifically a device for joining two sheets, which are first clamped together with a so-called hold-down device and then by pressing the die through material deformation between the male and the male Matrix are connected.
  • the actuating mechanism is designed in the form of a toggle lever mechanism that is common in clamping devices.
  • the subject matter of the invention is a tensioning and / or joining device.
  • the invention is based on the object of improving a device of the generic type, which is thus actuated, for example, by an actuating cylinder with the interposition of a toggle lever mechanism, and with simple constructive means that the unavoidable bending no longer relates to the axial precise alignment between the workpiece support and dislodging clamping or joining stamps.
  • This solution is based on three essential measures, namely on the one hand to hold the workpiece support by a firm connection to the fixture frame in an axially accurate assignment to the clamping or joining die, on the other hand to the division of the counterholder in two and finally to the intermediate arrangement of a ball between the lower end of the workpiece support and the lower part of the counter holder. If the load-bearing lower part bends under load and, as mentioned, only moves in the 1/100 mm range, the center support of the workpiece support is retained by the intermediate arrangement of the ball.
  • a device is known with which a bending offset can also be counteracted, but this device does not allow a firm connection of the workpiece support to the actual device frame and requires an articulated connection to the device frame, which in turn If jamming of the coaxially movable workpiece support is to be prevented, it must also be pivotally connected to the die holder.
  • the clamping and / or joining device basically and in a known manner consists of a device frame 1 with a clamping or joining die 2 which can be actuated by a toggle lever mechanism, under which in a cantilever-like counter-holder 3 of the device frame 1 a workpiece support 4 axially aligned with the clamping or joining die 2 is arranged.
  • the exemplary embodiment is a device of a special kind, namely with a double drive on the one hand for tensioning and on the other hand for press-fitting.
  • the counter-holder 3 which is firmly connected to the device frame 1, consists of a part 3 'which receives the clamping and joining load and from a the workpiece support 4 axially in the direction of Load displaceable part 3 '' is formed, and that between the lower end 4 'of the workpiece support 4 and the load-bearing part 3' a positionally fixed ball 5 is arranged.
  • the joining device is shown with a hold-down device, which is actuated by a toggle lever mechanism KM, while the joining die 2 is actuated by a further toggle lever mechanism KM1, which mechanisms receive their drive from actuating cylinders, not shown.
  • a hold-down device which is actuated by a toggle lever mechanism KM
  • the joining die 2 is actuated by a further toggle lever mechanism KM1
  • receive their drive from actuating cylinders not shown.
  • the joining die 2 is provided with a male part 7 and the workpiece support 4 is provided with a female die 8, and furthermore the joining die 2 is mounted in a clamping arm 13 which can be pivoted on the device frame 1 and is coupled to the toggle lever mechanism KM, which forms the aforementioned hold-down.
  • the part 3 ' is arranged as a central cantilever extension 6 on the device frame 1, to which the part 3' 'is assigned in the form of two carrying extensions 9 arranged laterally adjacent to the device frame 1.
  • a cross member 10 carrying the workpiece support 4 is arranged on this a cross member 10 carrying the workpiece support 4 arranged.
  • the part 3 ' is advantageously arranged on the device frame 1 in a height-adjustable manner in the direction of the joining load, as indicated by arrow P.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Assembly (AREA)
  • Press Drives And Press Lines (AREA)
  • Seal Device For Vehicle (AREA)
  • Clamps And Clips (AREA)
  • Jigs For Machine Tools (AREA)

Abstract

The invention relates to a clamping and/or clinch joining apparatus for the positionally accurate spot fixing of two objects, particularly flat workpieces such as sheets or the like, consisting of an apparatus frame (1) with a clamping or clinch joining punch (2) which can be actuated by an actuating mechanism (KM) and under which, in a cantilever-like counter support (3) of the apparatus frame (1), is arranged a workpiece rest (4) axially aligned with the clamping or clinch joining punch (2). According to the invention, the counter support (3), which is rigidly connected to the apparatus frame (1), is formed from a part (3') which takes the clamping and clinch joining load and from a part (3'') which contains the workpiece support (4) in a manner which allows it to be displaced axially in the direction of the load, a positionally fixed ball (5) being arranged between the lower end (4') of the workpiece support (4) and the part (3') which takes the load. As a result, the unavoidable bending can no longer disturb the positionally accurate axial alignment between the workpiece support and the clamping or clinch joining punch. <IMAGE>

Description

Die Erfindung betrifft eine Spann- und/oder Fügevorrichtung zur lagegenauen, punktuellen Fixierung zweier Gegenstände, insbesondere flächiger Werkstücke, wie Bleche od. dgl. gemäß Oberbegriff des Anspruches 1.The invention relates to a clamping and / or joining device for the precise, punctual fixing of two objects, in particular flat workpieces, such as sheets or the like. According to the preamble of claim 1.

Derartige Vorrichtungen sind bspw. nach der DE-A-38 22 377 bekannt, wobei es sich in diesem Falle speziell um eine Vorrichtung zur Fügeverbindung zweier Bleche handelt, die zunächst mit einem sogenannten Niederhalter zusammengespannt und dann durch Nachdrücken des Fügestempels durch Materialverformung zwischen Patrize und Matrize verbunden werden. Die Stellmechanik ist hierbei in Form einer wie bei Spannvorrichtungen allgemein üblichen Kniehebelmechanik ausgebildet.Devices of this type are known, for example, from DE-A-38 22 377, in which case it is specifically a device for joining two sheets, which are first clamped together with a so-called hold-down device and then by pressing the die through material deformation between the male and the male Matrix are connected. The actuating mechanism is designed in the form of a toggle lever mechanism that is common in clamping devices.

Bei solchen Vorrichtungen, sofern das Vorrichtungsgestell mit seinem Gegenlager nicht auf einer festen Unterlage installiert ist, besteht das Problem, daß sich das kragbalkenartige Gegenlager in seiner Erstreckungsrichtung mehr oder weniger um ein oder mehrere 1/100 mm verbiegt, was sich an der weiter oben befindlichen Werkstücksauflage weitaus stärker bemerkbar macht und die erforderliche axiale Fluchtung zwischen Spann- und Fügestempel und der Werkstücksauflage bzw. der darauf angeordneten Matrize aufhebt, da eine Verschiebung eintritt.In such devices, provided that the device frame with its counter bearing is not installed on a solid base, there is the problem that the cantilever-like counter bearing bends more or less in its direction of extension by one or more 1/100 mm, which is due to the one located above Makes the workpiece support much more noticeable and cancels the required axial alignment between the clamping and joining stamp and the workpiece support or the die arranged thereon, since a shift occurs.

Falls mit einer solchen Vorrichtung Bleche durch Materialverformung zusammengefügt bzw. verbunden werden sollen, so wird dadurch die Festigkeit der Fügeverbindung beachtlich reduziert. Abgesehen von einer Fügeverbindung kann aber auch der Bedarfsfall vorliegen, zwei Bleche oder dgl. Gegenstände in einer ganz bestimmten Stellung zueinander zusammenzuhalten, um diese dann außerhalb der eigentlichen Spannstelle mit anderen Verbindungsmitteln genau festgelegt zu verbinden. Auch in solchen Fällen besteht, bedingt durch den Biegungsversatz, die Gefahr, daß sich während des Zusammenspannens, die beiden Werkstücke zueinander versetzen können, was dann eine Fehlverbindung zur Folge hat. Mit Rücksicht darauf handelt es sich beim Gegenstand der Erfindung um eine Spann- und/oder Fügevorrichtung.If sheets of this type are to be joined or connected by material deformation with such a device, the strength of the joint connection is considerably reduced. Apart from a joint connection, however, there may also be a need to hold two metal sheets or similar objects together in a very specific position in order to then connect them precisely to other connecting means outside the actual clamping point. Even in such cases, due to the bending offset, there is a risk that the two workpieces can move relative to one another during clamping, which then leads to a faulty connection has the consequence. In view of this, the subject matter of the invention is a tensioning and / or joining device.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung der gattungsgemäßen Art, die also bspw. von einem Betätigungszylinder unter Zwischenschaltung einer Kniehebelmechanik betätigt wird, dahingehend und mit einfachen konstruktiven Mitteln zu verbessern, daß sich die unvermeidbare Verbiegung nicht mehr auf die axiale lagegenaue Fluchtung zwischen Werkstücksauflage und Spann- bzw. Fügestempel versetzend auswirken kann.The invention is based on the object of improving a device of the generic type, which is thus actuated, for example, by an actuating cylinder with the interposition of a toggle lever mechanism, and with simple constructive means that the unavoidable bending no longer relates to the axial precise alignment between the workpiece support and dislodging clamping or joining stamps.

Diese Aufgabe ist mit einer Vorrichtung der eingangs genannten Art nach der Erfindung durch die im Kennzeichen des Patentanspruches 1 angeführten Merkmale gelöst. Weitere Ausgestaltungen ergeben sich nach den Unteransprüchen.This object is achieved with a device of the type mentioned according to the invention by the features stated in the characterizing part of patent claim 1. Further configurations result from the subclaims.

Diese Lösung basiert also auf drei wesentlichen Maßnahmen, nämlich zum einen auf dem Festhalten der Werkstücksauflage durch eine feste Verbindung zum Vorrichtungsgestell in axial lagegenauer Zuordnung zum Spann- bzw. Fügestempel, zum anderen auf der Zweiteilung des Gegenhalters, und schließlich auf der Zwischenanordnung einer Kugel zwischen dem unteren Ende der Werkstücksauflage und dem unteren Teil des Gegenhalters. Bei unter Belastung eintredender Biegung des lastaufnehmenden Unterteils, die sich, wie gesagt, nur im 1/100 mm-Bereich bewegt, bleibt die mittige Unterstützung der Werkstücksauflage durch die Zwischenanordnung der Kugel erhalten.This solution is based on three essential measures, namely on the one hand to hold the workpiece support by a firm connection to the fixture frame in an axially accurate assignment to the clamping or joining die, on the other hand to the division of the counterholder in two and finally to the intermediate arrangement of a ball between the lower end of the workpiece support and the lower part of the counter holder. If the load-bearing lower part bends under load and, as mentioned, only moves in the 1/100 mm range, the center support of the workpiece support is retained by the intermediate arrangement of the ball.

Nach der DE-A-41 19 624 ist zwar eine Vorrichtung bekannt, mit der einem Biegungsversatz ebenfalls entgegengewirkt werden kann, diese Vorrichtung läßt jedoch eine feste Verbindung der Werkstücksauflage mit dem eigentlichen Vorrichtungsgestell nicht zu und verlangt eine gelenkige Verbindung mit dem Vorrichtungsgestell, das seinerseits, wenn ein Verklemmen der koaxial beweglichen Werkstücksauflage verhindert werden soll, zusätzlich schwenkbar mit dem Fügestempelhalter verbunden sein muß.According to DE-A-41 19 624, a device is known with which a bending offset can also be counteracted, but this device does not allow a firm connection of the workpiece support to the actual device frame and requires an articulated connection to the device frame, which in turn If jamming of the coaxially movable workpiece support is to be prevented, it must also be pivotally connected to the die holder.

Die erfindungsgemäße Vorrichtung und deren vorteilhafte Ausgestaltungen werden nachfolgend anhand der zeichnerischen Darstellung eines Ausführungsbeispieles näher erläutert.The device according to the invention and its advantageous embodiments are explained in more detail below with the aid of the drawing of an exemplary embodiment.

Es zeigt schematisch

Fig. 1
eine Ausführungsform der Vorrichtung in Seitenansicht und
Fig. 2
teilweise im Schnitt und in Ansicht die Vorrichtung längs Linie II-II in Fig. 1.
It shows schematically
Fig. 1
an embodiment of the device in side view
Fig. 2
partly in section and in view of the device along line II-II in Fig. 1st

Die Spann- und/oder Fügevorrichtung besteht grundsätzlich und in bekannter Weise aus einem Vorrichtungsgestell 1 mit einem durch eine Kniehebelmechanik betätigbaren Spann- oder Fügestempel 2, unter dem in einem kragbalkenartigen Gegenhalter 3 des Vorrichtungsgestelles 1 eine zum Spann- oder Fügestempel 2 axial fluchtende Werkstücksauflage 4 angeordnet ist. Beim Ausführungsbeispiel handelt es sich dabei um eine Vorrichtung besonderer Art, nämlich mit einem Doppelantrieb einerseits für das Spannen und andererseits für das Drckfügen. Unabhängig von diesem Doppelantrieb interessiert hier nur der Bereich links in der Darstellung, für den wesentlich ist, daß der fest mit dem Vorrichtungsgestell 1 verbundene Gegenhalter 3 aus einem die Spann- und Fügebelastung aufnehmenden Teil 3' und aus einem die Werkstücksauflage 4 axial in Richtung der Belastung verschieblich enthaltenden Teil 3'' gebildet ist, und daß zwischen dem unteren Ende 4' der Werkstücksauflage 4 und dem die Last aufnehmenden Teil 3' eine lagefixierte Kugel 5 angeordnet ist.The clamping and / or joining device basically and in a known manner consists of a device frame 1 with a clamping or joining die 2 which can be actuated by a toggle lever mechanism, under which in a cantilever-like counter-holder 3 of the device frame 1 a workpiece support 4 axially aligned with the clamping or joining die 2 is arranged. The exemplary embodiment is a device of a special kind, namely with a double drive on the one hand for tensioning and on the other hand for press-fitting. Irrespective of this double drive, only the area on the left in the illustration is of interest here, for which it is essential that the counter-holder 3, which is firmly connected to the device frame 1, consists of a part 3 'which receives the clamping and joining load and from a the workpiece support 4 axially in the direction of Load displaceable part 3 '' is formed, and that between the lower end 4 'of the workpiece support 4 and the load-bearing part 3' a positionally fixed ball 5 is arranged.

Beim Ausführungsbeispiel ist die Fügevorrichtung mit Niederhalter dargestellt, die von einer Kniehebelmechanik KM betätigt wird, während der Fügestempel 2 von einer weiteren Kniehebelmechanik KM1 betätigt wird, welche Mechaniken ihren Antrieb von nicht dargestellten Betätigungszylindern erhalten. Dies bedarf im einzelnen keiner näheren Erläuterung, da hinlänglich bekannt (siehe bspw. DE-A-41 39 347).In the exemplary embodiment, the joining device is shown with a hold-down device, which is actuated by a toggle lever mechanism KM, while the joining die 2 is actuated by a further toggle lever mechanism KM1, which mechanisms receive their drive from actuating cylinders, not shown. This does not require any detailed explanation, since it is sufficiently known (see, for example, DE-A-41 39 347).

Da das Ausführungsbeispiel auf das Fügen von Blechen abgestellt ist, ist der Fügestempel 2 mit einer Patrize 7 und die Werkstücksauflage 4 mit einer Matrize 8 versehen und ferner ist der Fügestempel 2 in einem am Vorrichtungsgestell 1 schwenkbaren, mit der Kniehebelmechanik KM gekoppelten Spannarm 13 gelagert, der den vorerwähnten Niederhalter bildet.Since the exemplary embodiment is based on the joining of metal sheets, the joining die 2 is provided with a male part 7 and the workpiece support 4 is provided with a female die 8, and furthermore the joining die 2 is mounted in a clamping arm 13 which can be pivoted on the device frame 1 and is coupled to the toggle lever mechanism KM, which forms the aforementioned hold-down.

Beim Ausführungsbeispiel ist das das Teil 3' als mittiger Kragbalkenfortsatz 6 am Vorrichtungsgestell 1 angeordnet, dem das Teil 3'' in Form zweier seitlich benachbart dazu am Vorrichtungsgestell 1 angeordneter Tragfortsätze 9 zugeordnet ist. Auf diesen ist eine die Werkstücksauflage 4 tragende Traverse 10 angeordnet. Vorteilhaft ist dabei das Teil 3' in Richtung der Fügebelastung höheneinstellbar am Vorrichtungsgestell 1 angeordnet, wie mit Pfeil P angegeben.In the exemplary embodiment, the part 3 'is arranged as a central cantilever extension 6 on the device frame 1, to which the part 3' 'is assigned in the form of two carrying extensions 9 arranged laterally adjacent to the device frame 1. On this a cross member 10 carrying the workpiece support 4 is arranged. The part 3 'is advantageously arranged on the device frame 1 in a height-adjustable manner in the direction of the joining load, as indicated by arrow P.

Was die lagefixierte Anordnung der Kugel 5 betrifft, so ist diese, wie aus Fig. 1 ersichtlich, in einer Kalotte 11 des Teiles 3' gelagert und mit einem Halteelement, wie Schraube 12 in der Kalotte 11 fixiert. Anstelle einer Kugel 5 könnte natürlich auch eine Halbkugel oder auch halbzylindrische Leiste verwendet werden, und es wäre auch eine entsprechende Ausformung des Teiles 3' in diesem Bereich unmittelbar unter dem Ende 4' der Werkstücksauflage 4 möglich. Wesentlich ist nur eine kugelförmig gewölbte Auflage, um bei Ausbiegung des Teiles 3' unter Belastung nach unten die Zentrizität der Auflage zum Ende 4' zu gewährleisten.As regards the positionally fixed arrangement of the ball 5, this is, as can be seen from FIG. 1, stored in a spherical cap 11 of the part 3 'and fixed in the spherical cap 11 with a holding element, such as screw 12. Instead of a ball 5, a hemisphere or semi-cylindrical bar could of course also be used, and a corresponding shaping of the part 3 'would also be possible in this area directly below the end 4' of the workpiece support 4. What is essential is only a spherically curved support in order to ensure the centricity of the support at the end 4 'when the part 3' is bent downwards under load.

Bevorzugt wird in Rücksicht auf etwaigen Verschleiß eine auswechselbare Zuordnung der Auflage bzw. der Kugel 5 zum Teil 3'. Sofern eine halbzylindrische Leiste verwendet werden sollte so muß diese sich selbstverständlich senkrecht zur Zeichnungsebene erstrecken.In view of any wear, an interchangeable assignment of the support or the ball 5 to part 3 'is preferred. If a semi-cylindrical bar should be used, it must of course extend perpendicular to the plane of the drawing.

Claims (5)

Spann- und/oder Fügevorrichtung zur lagegenauen, punktuellen Fixierung zweier Gegenstände, insbesondere flächiger Werkstücke, wie Bleche od. dgl., bestehend aus einem Vorrichtungsgestell (1) mit einem durch eine Betätigungsmechanik (KM) betätigbaren Spann- oder Fügestempel (2), unter dem in einem kragbalkenartigen Gegenhalter (3) des Vorrichtungsgestelles (1) eine zum Spann- oder Fügestempel (2) axial fluchtende Werkstücksauflage (4) angeordnet ist,
dadurch gekennzeichnet,
daß der fest mit dem Vorrichtungsgestell (1) verbundene Gegenhalter (3) aus einem, die Spann- und Fügebelastung aufnehmenden Teil (3') und aus einem die Werkstücksauflage (4) axial in Richtung der Belastung verschieblich enthaltenden Teil (3'') gebilde ist,
und daß zwischen dem unteren Ende (4') der Werkstücksauflage (4) und dem die Last aufnehmenden Teil (3') eine lagefixierte Kugel (5) angeordnet ist.Clamping and / or joining device for precise, punctual fixing of two objects, in particular flat workpieces, such as sheets or the like, consisting of a device frame (1) with a clamping or joining stamp (2) which can be actuated by an actuating mechanism (KM), below a workpiece support (4) axially aligned with the clamping or joining die (2) is arranged in a cantilever-like counter-holder (3) of the device frame (1),
characterized,
that the fixture (3) firmly connected to the device frame (1) is formed from a part (3 ') which receives the clamping and joining load and from a part (3'') which contains the workpiece support (4) axially displaceable in the direction of the load is
and that between the lower end (4 ') of the workpiece support (4) and the load-bearing part (3') a positionally fixed ball (5) is arranged. Vorrichtung nach Anspruch 1 zum kraft- und formschlüssigen Fügen,
dadurch gekennzeichnet,
daß der Fügestempel (2) mit einer Patrize (7) und die Werkstücksauflage (4) mit einer Matrize (8) versehen sind.Device according to claim 1 for non-positive and positive joining,
characterized,
that the die (2) with a male (7) and the workpiece support (4) with a female (8) are provided. Vorrichtung nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß das Teil (3') als mittiger Kragbalkenfortsatz (6) am Vorrichtungsgestell (1) angeordnet ist, dem das Teil (3'') in Form zweier seitlich benachbart dazu am Vorrichtungsgestell (1) angeordneter Tragfortsätze (9) zugeordnet und auf diesen eine die Werkstücksauflage (4) tragende Traverse (10) angeordnet ist.Device according to claim 1 or 2,
characterized,
that the part (3 ') is arranged as a central cantilever extension (6) on the device frame (1), which the part (3'') in the form of two laterally adjacent to the device frame (1) arranged carrying extensions (9) assigned and on this one the crosspiece (10) carrying the workpiece support (4) is arranged. Vorrichtung nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet,
daß das Teil (3') in Richtung der Fügebelastung höheneinstellbar am Vorrichtungsgestell (1) angeordnet ist.Device according to one of claims 1 to 3,
characterized,
that the part (3 ') is arranged on the device frame (1) so that it can be adjusted in height in the direction of the joining load. Vorrichtung nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet,
daß die Kugel (5) in einer Kalotte (11) des Teiles (3') gelagert und mit einem Halteelement, wie Schraube (12) in der Kalotte (11) fixiert ist.(Device according to one of claims 1 to 4,
characterized,
that the ball (5) is mounted in a spherical cap (11) of the part (3 ') and is fixed in the spherical cap (11) with a holding element, such as a screw (12). (
EP93118880A 1992-12-08 1993-11-24 Clamping and/or clinch joining apparatus Expired - Lifetime EP0610559B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9216702U 1992-12-08
DE9216702U DE9216702U1 (en) 1992-12-08 1992-12-08 Clamping and/or joining device for precise, point-by-point fixing of two objects

Publications (2)

Publication Number Publication Date
EP0610559A1 true EP0610559A1 (en) 1994-08-17
EP0610559B1 EP0610559B1 (en) 1996-05-22

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Application Number Title Priority Date Filing Date
EP93118880A Expired - Lifetime EP0610559B1 (en) 1992-12-08 1993-11-24 Clamping and/or clinch joining apparatus

Country Status (4)

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EP (1) EP0610559B1 (en)
AT (1) ATE138298T1 (en)
DE (2) DE9216702U1 (en)
ES (1) ES2089681T3 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3822377A1 (en) * 1988-07-01 1990-01-04 Bayerische Motoren Werke Ag Method and apparatus for joining two metal sheets
DE4119624C1 (en) * 1991-06-14 1992-07-02 Tuenkers Maschinenbau Gmbh, 4030 Ratingen, De Positive sheet metal plate joining mechanism - has joining press with plunger and die with plunger movable towards and away from die

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3822377A1 (en) * 1988-07-01 1990-01-04 Bayerische Motoren Werke Ag Method and apparatus for joining two metal sheets
DE4119624C1 (en) * 1991-06-14 1992-07-02 Tuenkers Maschinenbau Gmbh, 4030 Ratingen, De Positive sheet metal plate joining mechanism - has joining press with plunger and die with plunger movable towards and away from die

Also Published As

Publication number Publication date
ATE138298T1 (en) 1996-06-15
ES2089681T3 (en) 1996-10-01
EP0610559B1 (en) 1996-05-22
DE59302691D1 (en) 1996-06-27
DE9216702U1 (en) 1993-01-28

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