EP2097188B1 - Closure device for explosion forming - Google Patents

Closure device for explosion forming Download PDF

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Publication number
EP2097188B1
EP2097188B1 EP07819178A EP07819178A EP2097188B1 EP 2097188 B1 EP2097188 B1 EP 2097188B1 EP 07819178 A EP07819178 A EP 07819178A EP 07819178 A EP07819178 A EP 07819178A EP 2097188 B1 EP2097188 B1 EP 2097188B1
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EP
European Patent Office
Prior art keywords
connection unit
wedge
movement
wedge structure
retaining structure
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.)
Not-in-force
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EP07819178A
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German (de)
French (fr)
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EP2097188A1 (en
Inventor
Alexander Zak
Valentine Flitsch
Andreas Stranz
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Cosma Engineering Europe AG
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Cosma Engineering Europe AG
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Publication of EP2097188A1 publication Critical patent/EP2097188A1/en
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Publication of EP2097188B1 publication Critical patent/EP2097188B1/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
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/06—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure by shock waves
    • B21D26/08—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure by shock waves generated by explosives, e.g. chemical explosives
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49805—Shaping by direct application of fluent pressure
    • Y10T29/49806—Explosively shaping

Definitions

  • the invention relates to a closure device for explosive forming with the features of the preamble of claim 1, (see ZB EP-A-0 830 907 ).
  • a Explosionsumformbacter is in the post-published German patent application 10 2005 025 660
  • the device described serves in particular to form a seal between the closed mold and the tubular workpiece by a conical plug.
  • This plug forms the continuation of a priming tube which extends between a reclined working position and a rest position spaced from the mold
  • hydraulic cylinder actuated control there is an oblique groove for the ignition tube and an axially extending straight groove for an engaging element
  • the axially guided ignition tube is moved by a movement of the control element.
  • the engagement element is not detected by the movement of the control element because it is movably guided in the straight groove.
  • the invention is based on the object to design a closure device for explosive forming, with which a simple and secure manner by means of a movement of a connection unit, a Explosionsumformtechnikmaschinecht closed and the explosion forces can be supported.
  • the static support structure as an additional element allows a separation of the two functions attaching the closure device on the mold and wedge-translational motion coupling between the wedge structure and the terminal unit.
  • the guidance of the movable wedge structure on the static support structure allows a uniform movement of the same despite high actuation and explosion forces.
  • these forces which are partly transversely acting due to the diversion can be supported laterally on the static holding structure.
  • the static support structure comprises the wedge structure like a frame. This can contribute to the stability and torsional rigidity of the closure device when considerable forces of explosion occur and ensures an approximately constant alignment of the components with one another.
  • sliding aids are provided on the relatively moving surfaces between the wedge structure and the static support structure. These sliding aids can assist in uniform movement of the wedge structure on the static support structure and promote the force support via the static support structure.
  • these sliding aids are metallic sliding linings.
  • Metallic sliding linings withstand high forces, such as during operation and as a result of the explosion.
  • the static support structure is attached to the explosive forming tool.
  • the static support structure supported on the Explosionsumformwerkmaschinezeug and remain statically in position relative to the tool despite the occuring closing and explosion forces.
  • the static support structure via at least one anchor element with the Explosionsumformwerkmaschine.
  • the static support structure can be safely and effectively supported on the explosive forming tool.
  • the at least one anchor element may be mounted on the static support structure in at least one positive-locking receptacle.
  • the closing and explosion forces can be transmitted safely.
  • connection unit is guided on the anchor element. This ensures a secure alignment of the movement of the terminal unit relative to the tool and the static support structure.
  • friction-reducing intermediate elements are provided on the relatively moving surfaces between the connection unit and the anchor element in order to be able to support a uniform movement of the connection unit on the anchor element.
  • the friction-reducing intermediate elements are metallic sliding linings, which have a high service life and low wear at high loading forces.
  • the wedge structure comprises the connection unit approximately U-shaped transversely to the direction of movement of the connection unit.
  • connection unit has at least one transmission element, which is coupled in a motion-coupled manner with the wedge structure, transversely to the direction of movement of the connection unit, on which the wedge structure is movable. On the transmission element, the forces and movements are transmitted from the wedge structure to the connection unit.
  • the wedge structure has a wedge guide, with which the at least one transmission element is engaged.
  • the wedge guide is particularly suitable for guiding the transmission element in it against tilting.
  • the at least one transmission element and the at least one wedge guide are inclined in the same direction and to the same degree with respect to the direction of movement of the connection unit. This can improve the transmission of forces and strokes and allow uniform movements of the transmission element in the wedge guide.
  • the slide-promoting intermediate structures are metallic sliding linings.
  • Metallic sliding coatings convince with high forces by general abrasiveness.
  • the wedge structure is moved by means of an actuating element, in particular a hydraulic actuator.
  • the actuator can be selected according to the requirements in terms of force and stroke. Hydraulic actuators are due to the high achievable forces associated with sufficient precision.
  • the actuating element extends transversely through the wall of the static support structure. "Wall" in this sense includes side, ceiling and / or bottom walls. This ensures good access of the actuating element to the wedge structure in the closure device.
  • the closure device is detachably attached as a unit to the explosive forming tool.
  • the closure device can be attached to a desired tool depending on use and later attached to another tool for a new use, if necessary.
  • the static support structure has an approximately ring-like closed structure.
  • Such closed structures can be extremely stable and torsionally stiff, which can be of great advantage in the forces occurring during explosion forming.
  • the static support structure is closed by a yoke approximately annular.
  • the yoke closes the support structure in a stiffening manner and can ensure good accessibility of the parts in the static support structure during assembly and disassembly. Also in manufacturing, the mentioned multi-part in terms of manufacturing costs and costs can be beneficial.
  • connection unit is supported by sliding guides on the yoke. This additional guidance can assist a smooth movement of the terminal unit and contribute to the torsional rigidity of the overall equipment.
  • At least one of the relatively moving surfaces between the terminal unit and the yoke at least one sliding element.
  • these additional elements can also have the advantage that it is possible to compensate for manufacturing tolerances.
  • the sliding elements on metallic sliding coatings can be manufactured with very tight tolerances.
  • connection unit has two transmission elements and the wedge structure has two wedge guides in each case transversely to the direction of movement of the connection unit. The presence of two elements each in engagement can ensure that the power flow is divided and better supported.
  • connection unit has at least one gas supply unit and / or an ignition device and / or a tool closure and / or a tool seal.
  • FIG. 1 schematically shows a partial section through a closure device for the explosive forming 1 in its unspecified position in a press 2.
  • the press is here greatly simplified as upper 3 and lower 4 press half shown, in between is an explosive forming tool with a top 5 and a lower box 6.
  • a dashed shown reshaped workpiece 36 is still a dashed lines indicated cavity 37 of the tool 5, 6, which determines the final shape, spaced.
  • One Also shown in dashed line slightly conical or cylindrical plug 38 widens the workpiece 36 deforming at one end and thus clamps it with respect to the tool 5, 6 a. This plug 38 serves for the tool closure and the sealing of the tool 5, 6.
  • An anchor element 7, the closure device 1 is connected to the Explosionsumformwerkmaschinemaschine 5 and 6.
  • This anchor element 7 is received in a positive receptacle 8 of a static support structure 9.
  • a wedge structure 10 is movably guided, which is actuated by a hydraulic actuator 11.
  • the connection unit 14 Via guided in a wedge guide 12 transmission elements 13, the connection unit 14 can be moved with the stopper 38 formed thereon.
  • the connection unit 14 is guided axially in the anchor element 7, so that movements can be transmitted only in this direction 28.
  • the ratio of the force applied to actuate the wedge structure 10 to the resulting force moving the terminal unit 14 is about 3-5: 1, more preferably 3.5-4.5: 1, and more specifically about 4: 1.
  • the wedge guide 12 is inclined about 60 ° to 85 °, in particular 75 ° to 80 ° and in particular about 77 ° relative to the direction of movement 28 of the connection unit 14. This ensures a favorable power ratio to intercept short high force peaks well and so keep the terminal unit 14 during the explosion in the desired position 15. Depending on the inclination of the wedge guide 12 and the inertia of the wedge structure 10 contributes to this task.
  • connection unit 14 In a working position 15 of the Anschtussaku 14 is the connection unit 14 on the forming tool 5 and 6 and the plug 38 in the Malawikavtician 37. This is also the hydraulic actuator 11 in its working position 16. Now, the hydraulic actuator 11 in the direction 27 so actuated that it moves from its working position 15 in its rest position shown in dashed lines 17, the wedge structure 10 moves to the same extent with the hydraulic actuator 11 on. The guided in the wedge guide 12 transmission elements 13 of the connection unit 14 are forced to a movement 28 transversely to the mentioned movement 27 of the hydraulic actuator 11 and thus the wedge structure 10. As a result, the connection unit 14 performs an axial movement from its working position 15 to its rest position 18 shown in dashed line, in which it is spaced from the forming tool 5 and 6.
  • a gas supply and ignition system 19 is shown with just executed ignition tube and cross-drilled gas supply lines.
  • the gas system 19 is supplied via corresponding lines 35 with valves 20.
  • the ignition of the gas mixture via an ignition 39th
  • connection unit 14 via the work 15, 16 and rest positions 18, 17 of the connection unit 14 and of the actuating wedge structure 10 or of the hydraulic actuator 11 shown in dashed lines is shown.
  • FIGS. 2 to 4 show an example of an embodiment of the invention. It puts FIG. 2 the entire closure device 1 in perspective, uncut view.
  • the static support structure 9 is executed here in several parts. Between the yoke 21, which is shown here as a top wall of the static support structure 9, and a bottom wall 23 are held by means of fastening elements 25, side walls 24. These side walls 24 enclose the wedge structure 10 approximately annularly and, together with the yoke 21 and the wall 23 shown as a bottom, form the approximately frame-shaped connection unit 14.
  • connection unit 14 the gas supply 19 can be seen again. Also here two-piece anchor element 7 can be seen.
  • the dotted line 26 shows the axis of the closure device 1 and at the same time the direction of movement of the connection unit 14th
  • FIG. 3 shows the closure device 1 from FIG. 2 , wherein the yoke 21, the fasteners 25, one of the side walls 24 of the static support structure 9 and the upper anchor member 7 are not shown, which facilitates a view of the interior.
  • the actuator plate 22 can now be seen, to which the hydraulic actuator 11, not shown here, attaches in order to move the wedge structure 10 over it.
  • a movement 27 of the wedge structure 10 takes place by the forced coupling a movement 28 of the connection unit 14.
  • the forced coupling is performed by guided in the wedge guide 12 transmission elements 13th
  • both transmission elements on both sides of metallic sliding linings 29 In order to facilitate the sliding of the wedge guide 12 on the lateral surfaces of the transmission elements 13, both transmission elements on both sides of metallic sliding linings 29.
  • the side surfaces of the transmission elements 13 have the same inclination as the wedge guide 12.
  • sliding liners 30, which are located on the side of the connection unit 14 facing the yoke can also be found on the sliding surface between the connection unit 14 and the yoke 21.
  • sliding linings 31 can be found on the connection unit 14 on the surfaces moving relative to the armature element 7.
  • FIG. 3 By drawing omission of the upper anchor element 7 is in FIG. 3 the guide of the connection unit 14 in the anchor element 7 well visible, and the attachment of the anchor element 7 in the positive receptacle 8 of the static support structure 9.
  • a passage in the bottom of the wall 23 of the static support structure 9 allows access of the hydraulic actuator 11, not shown via the actuator plate 22 to the wedge structure 10.
  • the receptacles 32 of the fasteners 25 of the static support structure 9 can be seen.
  • FIG. 4 shows the wedge structure 10 in detail. Shown is also the actuator plate 22, via which the wedge structure 10 is actuated.
  • the metallic sliding linings 33 are located between the wedge structure 10 and the inner sides of the static support structure 9 and allow a low-friction sliding upon actuation of the wedge structure 10.
  • additional sliding linings 34 are provided, which are located on the surface of the wedge structure moving with respect to the transfer elements 13 10 and thus form the Gegengleitbeläge to the sliding linings 29 on the transmission elements 13.
  • the metallic sliding linings are screwed tight, which are indicated by small black circular areas.
  • a workpiece to be reshaped is introduced into the tool 5, 6, which is closed together with the anchoring element 7 divided in two according to upper and lower box 6.
  • the anchor element 7 is guided in the aligned in the direction of the closing movement recording 8.
  • the connection unit 14 is moved to the tool 5, 6.
  • the hydraulic actuator 11 actuates the wedge structure 10 via the actuator plate 22.
  • the transmission elements 13 guided in the wedge guide 12 of the wedge structure 10, together with the axial guide, effect the connection unit 14 in the anchor elements 7, a movement of the connection unit to the forming tool 5, 6 to. Due to the inclination of the wedge guide 12 relative to the receptacle 8 of the anchor element 7 and the direction of movement 27 of the wedge structure 10 and the hydraulic actuator 11, this axial displacement of the connection unit 14 in the direction 28 on the tool 5, 6 to.
  • an ignitable gas mixture is introduced into the workpiece interior via the gas supply and ignition system 19 and ignited by the ignition 39.
  • the high following on the explosion kickback acts counter to the direction of actuation of the connection unit 14, but is supported on the static support structure 9 and about the connection via the anchor member 7 to the forming tool 5, 6 partially redirected such that the forces for sealing closure of Tool 5, 6 can be used by the connection unit 14.
  • the connection unit 14 is again moved away from the forming tool 5, 6 into the rest position 18 via reverse movements of the hydraulic actuator 11 and the wedge structure 10.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Clamps And Clips (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)

Description

Die Erfindung betrifft eine Verschlusseinrichtung für das Explosionsumformen mit den Merkmalen des Oberbegriffs des Anspruchs 1, (siehe Z.B. EP-A-0 830 907 ).The invention relates to a closure device for explosive forming with the features of the preamble of claim 1, (see ZB EP-A-0 830 907 ).

Beim Explosionsumformen wird ein meist rohrförmiges Werkstück durch den entstehenden Innendruck plastisch aufgeweitet. Vor dem Umformvorgang befindet sich das Werkstück in einem geschlossenen Werkzeug und wird dann durch den Innendruck gegen die Werkzeugkavität gepresst. Der dazu nötige, hohe Innendruck entsteht durch die Zündung eines Gasgemisches im Inneren; bei Detonationsgeschwindigkeiten bis 5000 m/s muss das Werkzeug Kräften äquivalent zu etwa 400 t stand halten. Daher ist das dichtende Schießen des Umformwerkzeugs von besondere Bedeutung für das Explosionsumformen.In explosive forming a usually tubular workpiece is widened plastically by the resulting internal pressure. Before the forming process, the workpiece is in a closed tool and is then pressed by the internal pressure against the Werkzeugkavität. The necessary, high internal pressure is created by the ignition of a gas mixture inside; at detonation speeds up to 5000 m / s, the tool must withstand forces equivalent to about 400 t. Therefore, the sealing shooting of the forming tool is of particular importance for the explosive forming.

Ein Explosionsumformverfahren ist in der nachveröffentlichten deutschen Patentanmeldung 10 2005 025 660 Vorrichtung und Verfahren zum Explosionsumformen" beschrieben. Die beschriebene Vorrichtung dient insbesondere der Ausbildung einer Dichtung zwischen dem geschlossenen Formwerkzeug und dem rohrartigen Werkstück durch einen konischen Stopfen. Dieser Stopfen bildet die Fortsetzung eines Zündrohrs, welches zwischen einer angerückten Arbeits- und einer zum Formwerkzeug beabstandeten Ruheposition bewegbar ist. Dazu werden die Kraft und der Hub eines Hydraulikzylinders von einem Steuerelement übersetzt. In dem seitlich offenen, vom Hydraulikzylinder betätigten Steuerelement befindet sich eine schräge Nut für das Zündrohr und eine axial verlaufende, gerade Nut für ein Eingriffselement. Über die schräge Nut wird das axial geführte Zündrohr durch eine Bewegung des Steuerelements bewegt. Das Eingriffselement wird von der Bewegung des Steuerelements nicht mit erfasst, da es in der geraden Nut beweglich geführt ist.A Explosionsumformverfahren is in the post-published German patent application 10 2005 025 660 The device described serves in particular to form a seal between the closed mold and the tubular workpiece by a conical plug.This plug forms the continuation of a priming tube which extends between a reclined working position and a rest position spaced from the mold In the laterally open, hydraulic cylinder actuated control there is an oblique groove for the ignition tube and an axially extending straight groove for an engaging element The axially guided ignition tube is moved by a movement of the control element. The engagement element is not detected by the movement of the control element because it is movably guided in the straight groove.

Der Erfindung liegt die Aufgabe zu Grunde, eine Verschlusseinrichtung für das Explosionsumformen zu gestalten, mit welcher auf einfache und sichere Art und Weise mit Hilfe einer Bewegung einer Anschlusseinheit ein Explosionsumformwerkzeug verschlossen und die Explosionskräfte abgestützt werden können.The invention is based on the object to design a closure device for explosive forming, with which a simple and secure manner by means of a movement of a connection unit, a Explosionsumformwerkzeug closed and the explosion forces can be supported.

Diese Aufgabe wird erfindungsgemäß gelöst durch eine Verschlusseinrichtung mit den Merkmalen des Anspruchs 1.This object is achieved by a closure device with the features of claim 1.

Die statische Haltestruktur als zusätzliches Element ermöglicht eine Trennung der beiden Funktionen Befestigen der Verschlusseinrichtung am Formwerkzeug und keilübersetzende Bewegungskopplung zwischen der Keilstruktur und der Anschlusseinheit. Die Führung der beweglichen Keilstruktur an der statischen Haltestruktur ermöglicht einen gleichförmigen Bewegungsablauf derselben trotz hoher Betätigungs- und Explosionskräfte. Zudem können diese durch die Umleitung zum Teil quer wirkenden Kräfte seitlich an der statischen Haltestruktur abgestützt werden.The static support structure as an additional element allows a separation of the two functions attaching the closure device on the mold and wedge-translational motion coupling between the wedge structure and the terminal unit. The guidance of the movable wedge structure on the static support structure allows a uniform movement of the same despite high actuation and explosion forces. In addition, these forces which are partly transversely acting due to the diversion can be supported laterally on the static holding structure.

In einem günstigen Ausführungsbeispiel umfasst die statische Haltestruktur die Keilstruktur rahmenartig. Dies kann bei den auftretenden beträchtlichen Explosionskräften zur Stabilität und Verwindungssteife der Verschlusseinrichtung beitragen und sorgt für eine etwa gleich bleibende Ausrichtung der Bauteile zueinander.In a favorable embodiment, the static support structure comprises the wedge structure like a frame. This can contribute to the stability and torsional rigidity of the closure device when considerable forces of explosion occur and ensures an approximately constant alignment of the components with one another.

In einer besonderen Ausführungsform der Erfindung sind an den relativ zueinander bewegten Flächen zwischen der Keilstruktur und der statischen Haltestruktur Gleithilfen vorgesehen. Diese Gleithilfen können eine gleichförmige Bewegung der Keilstruktur an der statischen Haltestruktur unterstützen und die Kraftabstützung über die statische Haltestruktur fördern.In a particular embodiment of the invention, sliding aids are provided on the relatively moving surfaces between the wedge structure and the static support structure. These sliding aids can assist in uniform movement of the wedge structure on the static support structure and promote the force support via the static support structure.

Vorteilhafterweise sind diese Gleithilfen metallische Gleitbeläge. Metallische Gleitbeläge widerstehen hohen auftretenden Kräften, wie hier bei der Betätigung und infolge der Explosion.Advantageously, these sliding aids are metallic sliding linings. Metallic sliding linings withstand high forces, such as during operation and as a result of the explosion.

In einer besonders günstigen Ausführungsform ist die statische Haltestruktur an dem Explosionsumformwerkzeug befestigt. Damit kann die statische Haltestruktur an dem Explosionsumformwerkzeug abgestützt und trotz der auftretenden Schließ- und Explosionskräfte statisch in ihrer Position relativ zum Werkzeug bleiben.In a particularly favorable embodiment, the static support structure is attached to the explosive forming tool. Thus, the static support structure supported on the Explosionsumformwerkzeug and remain statically in position relative to the tool despite the occuring closing and explosion forces.

Es kann von Vorteil sein, die statische Haltestruktur über mindestens ein Ankerelement mit dem Explosionsumformwerkzeug zu verbinden. Damit kann die statische Haltestruktur sicher und wirksam an dem Explosionsumformwerkzeug abgestützt werden.It may be advantageous to connect the static support structure via at least one anchor element with the Explosionsumformwerkzeug. Thus, the static support structure can be safely and effectively supported on the explosive forming tool.

In besonderer Weise kann das mindestens eine Ankerelement an der statischen Haltestruktur in mindestens einer formschlüssigen Aufnahme gelagert sein. Über den Formschluss lassen sich die Schließ- und Explosionskräfte sicher übertragen.In a special way, the at least one anchor element may be mounted on the static support structure in at least one positive-locking receptacle. About the positive connection, the closing and explosion forces can be transmitted safely.

In einer vorteilhaften Ausführungsform ist die Bewegung der Anschlusseinheit an dem Ankerelement geführt. Dies gewährleistet eine sichere Ausrichtung der Bewegung der Anschlusseinheit relativ zu dem Werkzeug und der statischen Haltestruktur.In an advantageous embodiment, the movement of the connection unit is guided on the anchor element. This ensures a secure alignment of the movement of the terminal unit relative to the tool and the static support structure.

Vorteilhafterweise sind an den relativ zueinander bewegten Flächen zwischen der Anschlusseinheit und dem Ankerelement reibungsmindemde Zwischenelemente vorgesehen, um eine gleichmäßige Bewegung der Anschlusseinheit am Ankerelement unterstützen zu können.Advantageously, friction-reducing intermediate elements are provided on the relatively moving surfaces between the connection unit and the anchor element in order to be able to support a uniform movement of the connection unit on the anchor element.

Vorteilhafterweise sind die reibungsmindernden Zwischenelemente metallische Gleitbeläge, welche bei hohen Belastungskräften eine hohe Lebensdauer und einen geringen Verschleiß aufweisen.Advantageously, the friction-reducing intermediate elements are metallic sliding linings, which have a high service life and low wear at high loading forces.

In einer vorteilhaften Ausführungsform umfasst die Keilstruktur die Anschlusseinheit etwa U-förmig quer zur Bewegungsrichtung der Anschlusseinheit. Damit werden die auf die Keilstruktur wirkenden Kräfte gut von ihr aufgenommen, wobei die Bewegung der Anschlusseinheit ermöglicht wird.In an advantageous embodiment, the wedge structure comprises the connection unit approximately U-shaped transversely to the direction of movement of the connection unit. Thus, the forces acting on the wedge structure forces are well absorbed by her, the movement of the connection unit is made possible.

In besonderer Weise weist die Anschlusseinheit mindestens ein mit der Keilstruktur bewegungsgekoppeltes Übertragungselement quer zur Bewegungsrichtung der Anschlusseinheit auf, an welchem die Keilstruktur beweglich ist. An dem Übertragungselement werden die Kräfte und Bewegungen von der Keilstruktur auf die Anschlusseinheit übertragen.In a special way, the connection unit has at least one transmission element, which is coupled in a motion-coupled manner with the wedge structure, transversely to the direction of movement of the connection unit, on which the wedge structure is movable. On the transmission element, the forces and movements are transmitted from the wedge structure to the connection unit.

In einer günstigen Ausführungsform weist die Keilstruktur eine Keilführung auf, mit welcher das mindestens eine Übertragungselement im Eingriff ist. Die Keilführung eignet sich in besonderem Maße, das Übertragungselement darin verkantungssicher zu führen.In a favorable embodiment, the wedge structure has a wedge guide, with which the at least one transmission element is engaged. The wedge guide is particularly suitable for guiding the transmission element in it against tilting.

In einer günstigen Ausführungsform der Erfindung sind das mindestens eine Übertragungselement und die mindestens eine Keilführung in gleicher Richtung und in gleichem Maße gegenüber der Bewegungsrichtung der Anschlusseinheit geneigt. Das kann die Übertragung von Kräften und Hüben verbessern und gleichförmige Bewegungen des Übertragungselements in der Keilführung ermöglichen.In a favorable embodiment of the invention, the at least one transmission element and the at least one wedge guide are inclined in the same direction and to the same degree with respect to the direction of movement of the connection unit. This can improve the transmission of forces and strokes and allow uniform movements of the transmission element in the wedge guide.

Vorteilhafterweise sind an den relativ zueinander bewegten Flächen zwischen dem mindestens einen Übertragungselement und der mindestens einen Keilführung gleitfördemde Zwischenstrukturen vorgesehen. Dies ermöglicht eine wirksamere Kraftübertragung zwischen dem Übertragungselement und der Keilaufnahme.Advantageously, at the relatively moving surfaces between the at least one transmission element and the at least one wedge guide gleitfördemde intermediate structures intended. This allows for more efficient power transmission between the transmission element and the wedge receiver.

In einem günstigen Ausführungsbeispiel sind die gleitfördemden Zwischenstrukturen metallische Gleitbeläge. Metallische Gleitbeläge überzeugen bei hohen Kräften durch generelle Abriebarmut.In a favorable embodiment, the slide-promoting intermediate structures are metallic sliding linings. Metallic sliding coatings convince with high forces by general abrasiveness.

Vorteilhafterweise wird die Keilstruktur mit Hilfe eines Betätigungselements, insbesondere eines Hydraulik-Aktuators bewegt. Das Betätigungselement kann den Anforderungen bezüglich Kraft und Hub entsprechend ausgewählt werden. Hydraulik-Aktuatoren eignen sich aufgrund der hohen erzielbaren Kräfte verbunden mit ausreichender Präzision.Advantageously, the wedge structure is moved by means of an actuating element, in particular a hydraulic actuator. The actuator can be selected according to the requirements in terms of force and stroke. Hydraulic actuators are due to the high achievable forces associated with sufficient precision.

Es kann von Vorteil sein, dass sich das Betätigungselement quer durch die Wandung der statischen Haltestruktur erstreckt. "Wandung" in diesem Sinne beinhaltet Seiten-, Decken- und/oder Bodenwände. Damit ist ein guter Zugang des Betätigungselements zu der Keilstruktur in der Verschlusseinrichtung gewährleistet.It may be advantageous that the actuating element extends transversely through the wall of the static support structure. "Wall" in this sense includes side, ceiling and / or bottom walls. This ensures good access of the actuating element to the wedge structure in the closure device.

In einer besonderen Ausführungsform der Erfindung ist die Verschlusseinrichtung als Einheit lösbar am Explosionsumformwerkzeug befestigt. Damit kann die Verschlusseinrichtung je nach Verwendung an ein gewünschtes Werkzeug angebracht und später gegebenenfalls an ein anderes Werkzeug für eine neue Verwendung angebracht werden.In a particular embodiment of the invention, the closure device is detachably attached as a unit to the explosive forming tool. Thus, the closure device can be attached to a desired tool depending on use and later attached to another tool for a new use, if necessary.

Günstigerweise weist die statische Haltestruktur eine etwa ringartig geschlossene Struktur auf. Derart geschlossene Strukturen können äußerst stabil und verwindungssteif sein, was bei den beim Explosionsumformen auftretenden Kräften von großem Vorteil sein kann.Conveniently, the static support structure has an approximately ring-like closed structure. Such closed structures can be extremely stable and torsionally stiff, which can be of great advantage in the forces occurring during explosion forming.

In einer Ausführungsform ist die statische Haltestruktur durch ein Joch etwa ringartig geschlossen. Das Joch schließt die Haltestruktur in versteifender Weise und kann bei der Montage und Demontage für eine gute Zugänglichkeit der in der statischen Haltestruktur befindlichen Teile sorgen. Auch bei der Fertigung kann die erwähnte Mehrteiligkeit in Bezug auf Fertigungsaufwand und Kosten von Vorteil sein.In one embodiment, the static support structure is closed by a yoke approximately annular. The yoke closes the support structure in a stiffening manner and can ensure good accessibility of the parts in the static support structure during assembly and disassembly. Also in manufacturing, the mentioned multi-part in terms of manufacturing costs and costs can be beneficial.

Es ist von Vorteil, wenn die Anschlusseinheit an dem Joch gleitgeführt abgestützt ist. Diese zusätzliche Führung kann eine gleichmäßige Bewegung der Anschlusseinheit unterstützen und zur Verwindungssteifigkeit der Gesamteinrichtung beitragen.It is advantageous if the connection unit is supported by sliding guides on the yoke. This additional guidance can assist a smooth movement of the terminal unit and contribute to the torsional rigidity of the overall equipment.

Vorteilhafterweise weist mindestens eine der relativ zueinander bewegten Flächen zwischen der Anschlusseinheit und dem Joch mindestens ein Gleitelement auf. Diese zusätzlichen Elemente können neben der Reibungsminderung auch den Vorteil besitzen, dass sich Fertigungstoleranzen ausgleichen lassen.Advantageously, at least one of the relatively moving surfaces between the terminal unit and the yoke at least one sliding element. In addition to the reduction in friction, these additional elements can also have the advantage that it is possible to compensate for manufacturing tolerances.

Günstigerweise weisen die Gleitelemente metallische Gleitbeläge auf. Besonders metallische Gleitbeläge lassen sich mit sehr engen Toleranzen fertigen.Conveniently, the sliding elements on metallic sliding coatings. Particularly metallic sliding linings can be manufactured with very tight tolerances.

In einem günstigen Ausführungsbeispiel der Erfindung weist die Anschlusseinheit zwei Übertragungselemente und die Keilstruktur zwei Keilführungen jeweils quer zur Bewegungsrichtung der Anschlusseinheit auf. Das Vorhandensein je zweier Elemente im Eingriff kann dafür sorgen, dass der Kraftfluss aufgeteilt und besser abgestützt wird.In a favorable embodiment of the invention, the connection unit has two transmission elements and the wedge structure has two wedge guides in each case transversely to the direction of movement of the connection unit. The presence of two elements each in engagement can ensure that the power flow is divided and better supported.

In einer vorteilhaften Ausführungsform weist die Anschlusseinheit mindestens eine Gaszufuhreinheit und/oder eine Zündvorrichtung und/oder einen Werkzeugverschluss und/oder eine Werkzeugabdichtung auf.In an advantageous embodiment, the connection unit has at least one gas supply unit and / or an ignition device and / or a tool closure and / or a tool seal.

Im Folgenden wird ein Ausführungsbeispiel der Erfindung anhand der Zeichnung beschrieben. Es zeigen:

Figur 1
schematisch das Prinzip der Erfindung mit einem Teilschnitt durch die Verschlusseinrichtung,
Figur 2
eine Ausführungsform der Verschlusseinrichtung in perspektivischer Ansicht,
Figur 3
einen Teil der Verschlusseinrichtung aus Figur 2 und
Figur 4
die Keilstruktur der Verschlusseinrichtung von Figur 2 im Detail.
In the following an embodiment of the invention will be described with reference to the drawing. Show it:
FIG. 1
schematically the principle of the invention with a partial section through the closure device,
FIG. 2
an embodiment of the closure device in perspective view,
FIG. 3
a part of the closure device FIG. 2 and
FIG. 4
the wedge structure of the closure device of FIG. 2 in detail.

Gleiche Bezugszeichen verweisen dabei auf gleiche Teile bzw. Merkmale, unabhängig von der Figur, in welcher sie dargestellt werden.The same reference numbers refer to the same parts or features, regardless of the figure in which they are presented.

Figur 1 zeigt schematisch einen Teilschnitt durch eine Verschlusseinrichtung für das Explosionsumformen 1 in ihrer nicht näher detaillierten Lage in einer Presse 2. Die Presse ist hier stark vereinfacht als obere 3 und untere 4 Pressenhälfte dargestellt, dazwischen befindet sich ein Explosionsumformwerkzeug mit einem Ober- 5 und einem Unterkasten 6. Ein gestrichelt dargestelltes umzuformendes Werkstück 36 ist noch von einer gestrichelt angedeuteten Kavität 37 des Werkzeugs 5, 6, die dessen Endgestalt bestimmt, beabstandet. Ein ebenfalls in gestrichelter Linie gezeigter leicht konischer oder zylindrischer Stopfen 38 weitet das Werkstück 36 an einem Ende verformend auf und spannt es damit gegenüber dem Werkzeug 5, 6 ein. Dieser Stopfen 38 dient dem Werkzeugverschluss und der Abdichtung des Werkzeugs 5, 6. FIG. 1 schematically shows a partial section through a closure device for the explosive forming 1 in its unspecified position in a press 2. The press is here greatly simplified as upper 3 and lower 4 press half shown, in between is an explosive forming tool with a top 5 and a lower box 6. A dashed shown reshaped workpiece 36 is still a dashed lines indicated cavity 37 of the tool 5, 6, which determines the final shape, spaced. One Also shown in dashed line slightly conical or cylindrical plug 38 widens the workpiece 36 deforming at one end and thus clamps it with respect to the tool 5, 6 a. This plug 38 serves for the tool closure and the sealing of the tool 5, 6.

Über ein Ankerelement 7 ist die Verschlusseinrichtung 1 mit dem Explosionsumformwerkzeug 5 und 6 verbunden. Dieses Ankerelement 7 ist in einer formschlüssigen Aufnahme 8 einer statischen Haltestruktur 9 aufgenommen. In der statischen Haltestruktur 9 ist eine Keilstruktur 10 beweglich geführt, welche von einem Hydraulik-Aktuator 11 betätigt wird. Über in einer Keilführung 12 geführte Übertragungselemente 13 kann die Anschlusseinheit 14 mit dem daran ausgebildeten Stopfen 38 bewegt werden. Die Anschlusseinheit 14 ist in dem Ankerelement 7 axial geführt, so dass Bewegungen nur in dieser Richtung 28 übertragen werden können.An anchor element 7, the closure device 1 is connected to the Explosionsumformwerkzeug 5 and 6. This anchor element 7 is received in a positive receptacle 8 of a static support structure 9. In the static support structure 9, a wedge structure 10 is movably guided, which is actuated by a hydraulic actuator 11. Via guided in a wedge guide 12 transmission elements 13, the connection unit 14 can be moved with the stopper 38 formed thereon. The connection unit 14 is guided axially in the anchor element 7, so that movements can be transmitted only in this direction 28.

Das Verhältnis der zur Betätigung der Keilstruktur 10 aufzubringenden Kraft zu der resultierenden, die Anschlusseinheit 14 bewegenden Kraft ist etwa 3-5:1, insbesondere 3,5-4,5:1 und im Besonderen etwa 4:1. Dazu ist die Keilführung 12 etwa 60° bis 85°, insbesondere 75° bis 80° und im Besonderen etwa 77° gegenüber der Bewegungsrichtung 28 der Anschlusseinheit 14 geneigt. Dies gewährleistet ein günstiges Kraftverhältnis, um kurzzeitige hohe Kraftspitzen gut abzufangen und so die Anschlusseinheit 14 auch während der Explosion in der gewünschten Position 15 zu halten. Je nach Neigung der Keilführung 12 trägt auch die Trägheit der Keilstruktur 10 mit zu dieser Aufgabe bei.The ratio of the force applied to actuate the wedge structure 10 to the resulting force moving the terminal unit 14 is about 3-5: 1, more preferably 3.5-4.5: 1, and more specifically about 4: 1. For this purpose, the wedge guide 12 is inclined about 60 ° to 85 °, in particular 75 ° to 80 ° and in particular about 77 ° relative to the direction of movement 28 of the connection unit 14. This ensures a favorable power ratio to intercept short high force peaks well and so keep the terminal unit 14 during the explosion in the desired position 15. Depending on the inclination of the wedge guide 12 and the inertia of the wedge structure 10 contributes to this task.

In einer Arbeitsposition 15 der Anschtusseinheit 14 befindet sich die Anschlusseinheit 14 am Umformwerkzeug 5 und 6 und der Stopfen 38 in der Werkzeugkavität 37. Dabei befindet sich auch der Hydraulik-Aktuator 11 in seiner Arbeitsposition 16. Wird nun der Hydraulik-Aktuator 11 in der Richtung 27 derart betätigt, dass er sich von seiner Arbeitsposition 15 in seine gestrichelt dargestellte Ruheposition 17 bewegt, bewegt sich die Keilstruktur 10 in gleichem Maße mit dem Hydraulik-Aktuator 11 fort. Die in der Keilführung 12 geführten Übertragungselemente 13 der Anschlusseinheit 14 werden zu einer Bewegung 28 quer zur erwähnten Bewegung 27 des Hydraulik-Aktuators 11 und damit der Keilstruktur 10 gezwungen. Dadurch führt die Anschlusseinheit 14 eine axiale Bewegung von ihrer Arbeitsposition 15 in ihre in gestrichelter Linie gezeigte Ruheposition 18 aus, in der sie zum Umformwerkzeug 5 und 6 beabstandet ist.In a working position 15 of the Anschtusseinheit 14 is the connection unit 14 on the forming tool 5 and 6 and the plug 38 in the Werkzeugkavität 37. This is also the hydraulic actuator 11 in its working position 16. Now, the hydraulic actuator 11 in the direction 27 so actuated that it moves from its working position 15 in its rest position shown in dashed lines 17, the wedge structure 10 moves to the same extent with the hydraulic actuator 11 on. The guided in the wedge guide 12 transmission elements 13 of the connection unit 14 are forced to a movement 28 transversely to the mentioned movement 27 of the hydraulic actuator 11 and thus the wedge structure 10. As a result, the connection unit 14 performs an axial movement from its working position 15 to its rest position 18 shown in dashed line, in which it is spaced from the forming tool 5 and 6.

Im Schnitt der Anschlusseinheit 14 ist ein Gaszufuhr- und -zündsystem 19 mit gerade ausgeführtem Zündrohr und quergebohrten Gaszuleitungen gezeigt. Versorgt wird das Gassystem 19 über entsprechende Leitungen 35 mit Ventilen 20. Die Zündung des Gasgemisches erfolgt über eine Zündeinrichtung 39.In the section of the connection unit 14, a gas supply and ignition system 19 is shown with just executed ignition tube and cross-drilled gas supply lines. The gas system 19 is supplied via corresponding lines 35 with valves 20. The ignition of the gas mixture via an ignition 39th

Aus der Schemadarstellung in Figur 1 ist speziell die Bewegungskopplung der Anschlusseinheit 14 über die in gestrichelter Linie dargestellten Arbeits- 15, 16 und Ruhepositionen 18, 17 der Anschlusseinheit 14 sowie der betätigenden Keilstruktur 10 bzw. des Hydraulik-Aktuators 11 dargestellt.From the schema representation in FIG. 1 In particular, the movement coupling of the connection unit 14 via the work 15, 16 and rest positions 18, 17 of the connection unit 14 and of the actuating wedge structure 10 or of the hydraulic actuator 11 shown in dashed lines is shown.

Eine Ausgestaltung der einzelnen Komponenten der Verschlusseinrichtung 1, speziell der Übertragungselemente 13, wird aus den folgenden Figuren 2 bis 4 detailliert ersichtlich.An embodiment of the individual components of the closure device 1, especially of the transmission elements 13, will become apparent from the following FIGS. 2 to 4 detailed.

Ebenso sind z.B. ein Joch 21 und eine Aktuatorplatte 22 der Einfachheit halber erst in den folgenden Figuren dargestellt, dafür wird auf den Stopfen 38 nicht näher eingegangen.Likewise, e.g. a yoke 21 and an actuator plate 22 for the sake of simplicity only shown in the following figures, it will not be discussed in more detail on the plug 38.

Die Figuren 2 bis 4 zeigen exemplarisch eine Ausführungsform der Erfindung. Dabei stellt Figur 2 die gesamte Verschlusseinrichtung 1 in perspektivischer, ungeschnittener Ansicht dar. Die statische Haltestruktur 9 ist hier mehrteilig ausgeführt. Zwischen dem Joch 21, welches hier als Deckenwandung der statischen Haltestruktur 9 dargestellt ist, und einer Bodenwandung 23 werden mit Hilfe von Befestigungselementen 25, Seitenwandungen 24 gehalten. Diese Seitenwandungen 24 umschließen die Keilstruktur 10 etwa ringförmig und bilden zusammen mit dem Joch 21 und der als Boden dargestellten Wandung 23 die etwa rahmenförmige Anschlusseinheit 14.The FIGS. 2 to 4 show an example of an embodiment of the invention. It puts FIG. 2 the entire closure device 1 in perspective, uncut view. The static support structure 9 is executed here in several parts. Between the yoke 21, which is shown here as a top wall of the static support structure 9, and a bottom wall 23 are held by means of fastening elements 25, side walls 24. These side walls 24 enclose the wedge structure 10 approximately annularly and, together with the yoke 21 and the wall 23 shown as a bottom, form the approximately frame-shaped connection unit 14.

An der Anschlusseinheit 14 ist wieder die Gaszufuhr 19 erkennbar. Auch das hier zweiteilig ausgebildete Ankerelement 7 ist zu sehen. Die strichpunktierte Linie 26 zeigt die Achse der Verschlusseinrichtung 1 und gleichzeitig die Bewegungsrichtung der Anschlusseinheit 14.At the connection unit 14, the gas supply 19 can be seen again. Also here two-piece anchor element 7 can be seen. The dotted line 26 shows the axis of the closure device 1 and at the same time the direction of movement of the connection unit 14th

Figur 3 zeigt die Verschlusseinrichtung 1 aus Figur 2, wobei das Joch 21, die Befestigungselemente 25, eine der Seitenwandungen 24 der statischen Haltestruktur 9 und das obere Ankerelement 7 nicht dargestellt sind, was einen Blick auf das Innenleben erleichtert. So ist jetzt die Aktuatorplatte 22 zu sehen, an welcher der hier nicht gezeigte Hydraulik-Aktuator 11 ansetzt, um über sie die Keilstruktur 10 zu bewegen. Durch eine Bewegung 27 der Keilstruktur 10 erfolgt durch die Zwangskopplung eine Bewegung 28 der Anschlusseinheit 14. Die Zwangskopplung erfolgt durch in der Keilführung 12 geführte Übertragungselemente 13. FIG. 3 shows the closure device 1 from FIG. 2 , wherein the yoke 21, the fasteners 25, one of the side walls 24 of the static support structure 9 and the upper anchor member 7 are not shown, which facilitates a view of the interior. Thus, the actuator plate 22 can now be seen, to which the hydraulic actuator 11, not shown here, attaches in order to move the wedge structure 10 over it. By a movement 27 of the wedge structure 10 takes place by the forced coupling a movement 28 of the connection unit 14. The forced coupling is performed by guided in the wedge guide 12 transmission elements 13th

Um das Gleiten der Keilführung 12 an den seitlichen Flächen der Übertragungselemente 13 zu erleichtern, weisen beide Übertragungselemente beidseits metallische Gleitbeläge 29 auf. Im Übrigen weisen die Seitenflächen der Übertragungselemente 13 die selbe Neigung wie die Keilführung 12 auf. Zur Reibungsminderung finden sich auch an der Gleitfläche zwischen der Anschlusseinheit 14 und dem Joch 21 Gleitbeläge 30, welche sich an der dem Joch zugewandten Seite der Anschlusseinheit 14 befinden. Weitere, ebenfalls metallische, Gleitbeläge 31 finden sich an der Anschlusseinheit 14 an den relativ gegenüber dem Ankerelement 7 bewegten Flächen.In order to facilitate the sliding of the wedge guide 12 on the lateral surfaces of the transmission elements 13, both transmission elements on both sides of metallic sliding linings 29. Incidentally, the side surfaces of the transmission elements 13 have the same inclination as the wedge guide 12. To reduce friction, sliding liners 30, which are located on the side of the connection unit 14 facing the yoke, can also be found on the sliding surface between the connection unit 14 and the yoke 21. Further, likewise metallic, sliding linings 31 can be found on the connection unit 14 on the surfaces moving relative to the armature element 7.

Durch zeichnerisches Weglassen des oberen Ankerelements 7 ist in Figur 3 die Führung der Anschlusseinheit 14 im Ankerelement 7 gut ersichtlich, sowie die Befestigung des Ankerelements 7 in der formschlüssigen Aufnahme 8 der statischen Haltestruktur 9. Ein Durchgang in der als Boden ausgeprägten Wandung 23 der statischen Haltestruktur 9 erlaubt einen Zugang des nicht dargestellten Hydraulik-Aktuators 11 über die Aktuatorplatte 22 zur Keilstruktur 10. In der Bodenwandung 23 sind ebenfalls die Aufnahmen 32 der Befestigungselemente 25 der statischen Haltestruktur 9 zu sehen.By drawing omission of the upper anchor element 7 is in FIG. 3 the guide of the connection unit 14 in the anchor element 7 well visible, and the attachment of the anchor element 7 in the positive receptacle 8 of the static support structure 9. A passage in the bottom of the wall 23 of the static support structure 9 allows access of the hydraulic actuator 11, not shown via the actuator plate 22 to the wedge structure 10. In the bottom wall 23 are also the receptacles 32 of the fasteners 25 of the static support structure 9 can be seen.

Figur 4 zeigt die Keilstruktur 10 im Detail. Dargestellt ist ebenfalls die Aktuatorplatte 22, über welche die Keilstruktur 10 betätigt wird. Zu sehen ist hier eine zweigeteilte Keilstruktur 10 sowie deren Gleitbeläge. Die metallischen Gleitbeläge 33 befinden sich zwischen der Keilstruktur 10 und den Innenseiten der statischen Haltestruktur 9 und ermöglichen dort ein reibungsarmes Abgleiten bei Betätigung der Keilstruktur 10. In dieser Ausführungsform sind zusätzliche Gleitbeläge 34 vorgesehen, die sich an der gegenüber den Übertragungselementen 13 bewegten Fläche der Keilstruktur 10 befinden und die somit die Gegengleitbeläge zu den Gleitbelägen 29 an den Übertragungselementen 13 bilden. Wie in der Figur vorher sind in dieser Ausführungsform die metallischen Gleitbeläge festgeschraubt, welche durch kleine schwarze Kreisflächen kenntlich gemacht sind. FIG. 4 shows the wedge structure 10 in detail. Shown is also the actuator plate 22, via which the wedge structure 10 is actuated. Here you can see a two-part wedge structure 10 and its sliding linings. The metallic sliding linings 33 are located between the wedge structure 10 and the inner sides of the static support structure 9 and allow a low-friction sliding upon actuation of the wedge structure 10. In this embodiment, additional sliding linings 34 are provided, which are located on the surface of the wedge structure moving with respect to the transfer elements 13 10 and thus form the Gegengleitbeläge to the sliding linings 29 on the transmission elements 13. As in the figure before, in this embodiment, the metallic sliding linings are screwed tight, which are indicated by small black circular areas.

Ein umzuformendes Werkstück wird in das Werkzeug 5, 6 eingebracht, welches zusammen mit dem entsprechend Ober- 5 und Unterkasten 6 zweigeteilten Ankerelement 7 geschlossen wird. Dabei wird das Ankerelement 7 in der in Richtung der Schließbewegung ausgerichteten Aufnahme 8 geführt. Zum Explosionsumformen des Werkstücks wird die Anschlusseinheit 14 zum Werkzeug 5, 6 bewegt. Dazu betätigt der Hydraulik-Aktuator 11 über die Aktuatorplatte 22 die Keilstruktur 10. Die in der Keilführung 12 der Keilstruktur 10 geführten Übertragungselemente 13 bewirken zusammen mit der Axialführung der Anschlusseinheit 14 in den Ankerelementen 7 eine Bewegung der Anschlusseinheit auf das Umformwerkzeug 5, 6 zu. Durch die Neigung der Keilführung 12 gegenüber der Aufnahme 8 des Ankerelements 7 und der Bewegungsrichtung 27 der Keilstruktur 10 und des Hydraulik-Aktuators 11 kommt es zu diesem Axialversatz der Anschlusseinheit 14 in Richtung 28 auf das Werkzeug 5, 6 zu.A workpiece to be reshaped is introduced into the tool 5, 6, which is closed together with the anchoring element 7 divided in two according to upper and lower box 6. In this case, the anchor element 7 is guided in the aligned in the direction of the closing movement recording 8. For explosion deformation of the workpiece, the connection unit 14 is moved to the tool 5, 6. For this purpose, the hydraulic actuator 11 actuates the wedge structure 10 via the actuator plate 22. The transmission elements 13 guided in the wedge guide 12 of the wedge structure 10, together with the axial guide, effect the connection unit 14 in the anchor elements 7, a movement of the connection unit to the forming tool 5, 6 to. Due to the inclination of the wedge guide 12 relative to the receptacle 8 of the anchor element 7 and the direction of movement 27 of the wedge structure 10 and the hydraulic actuator 11, this axial displacement of the connection unit 14 in the direction 28 on the tool 5, 6 to.

Durch die Gasleitungen 35 und Ventile 20 wird ein zündfähiges Gasgemisch über das Gaszufuhr- und -zündsystem 19 in das Werkstückinnere eingebracht und durch die Zündung 39 gezündet. Der hohe auf die Explosion folgende Rückschlag wirkt entgegen der Betätigungsrichtung auf die Anschlusseinheit 14, wird jedoch über die statische Haltestruktur 9 abgestützt und über deren Anbindung über das Ankerelement 7 an das Umformwerkzeug 5, 6 zum Teil derart umgeleitet, dass die Kräfte zum dichtenden Verschluss des Werkzeugs 5, 6 durch die Anschlusseinheit 14 eingesetzt werden können. Nach erfolgtem Umformen wird die Anschlusseinheit 14 über umgekehrte Bewegungen des Hydraulik-Aktuators 11 und der Keilstruktur 10 wieder vom Umformwerkzeug 5, 6 in die Ruheposition 18 abgerückt.Through the gas lines 35 and valves 20, an ignitable gas mixture is introduced into the workpiece interior via the gas supply and ignition system 19 and ignited by the ignition 39. The high following on the explosion kickback acts counter to the direction of actuation of the connection unit 14, but is supported on the static support structure 9 and about the connection via the anchor member 7 to the forming tool 5, 6 partially redirected such that the forces for sealing closure of Tool 5, 6 can be used by the connection unit 14. After reshaping, the connection unit 14 is again moved away from the forming tool 5, 6 into the rest position 18 via reverse movements of the hydraulic actuator 11 and the wedge structure 10.

Claims (15)

  1. Closure device (1) for explosion forming, by means of which a connection unit (14) can be moved relative to an explosion forming die (5, 6) between an operating position (15) on the die (5, 6) and a non-operating position (18), characterised in that a wedge structure (10) is guided as it moves on a static retaining structure (9) and is coupled with the connection unit (14) so as to move with it, and a movement (28) of the connection unit (14) is directed transversely to a movement (27) of the wedge structure (10).
  2. Device (1) as claimed in claim 1,
    characterised in that
    the static retaining structure (9) encloses the wedge structure (10) in a frame-type arrangement.
  3. Device (1) as claimed in claim 1 or 2,
    characterised in that
    sliding aids are provided on the surfaces that are moved relative to one another between the wedge structure (10) and the static retaining structure (9).
  4. Device (1) as claimed in at least one of the preceding claims,
    characterised in that
    the static retaining structure (9) is secured to the explosion forming die (5, 6).
  5. Device (1) as claimed in claim 4,
    characterised in that
    the static retaining structure (9) is connected to the explosion forming die (5, 6) by means of at least one anchoring element (7).
  6. Device (1) as claimed in claim 5,
    characterised in that
    the at least one anchoring element (7) is mounted on the static retaining structure (9) in at least one positively fitting mount (8).
  7. Device (1) as claimed in claim 5 or 6,
    characterised in that
    the movement (28) of the connection unit (14) is guided on the anchoring element (7).
  8. Device (1) as claimed in at least one of the preceding claims,
    characterised in that
    the wedge structure (10) encloses the connection unit (14) in an approximately U-shaped arrangement transversely to the direction of movement (28) of the connection unit (14).
  9. Device (1) as claimed in at least one of the preceding claims,
    characterised in that
    the connection unit (14) comprises at least one transfer element (13) coupled with the wedge structure (10) in motion transversely to the direction of movement (28) of the connection unit (14), on which the wedge structure (10) moves.
  10. Device (1) as claimed in claim 9,
    characterised in that
    the wedge structure (10) comprises at least one wedge guide (12) by means of which the at least one transfer element(13) is engaged.
  11. Device (1) as claimed in claim 10,
    characterised in that
    the at least one transfer element (13) and the at least one wedge guide (12) are inclined in the same direction and to the same degree with respect to the direction of movement (28) of the connection unit (14).
  12. Device (1) as claimed in at least one of the preceding claims,
    characterised in that
    the wedge structure (10) is moved with the aid of an operating element, in particular a hydraulic actuator.
  13. Device (1) as claimed in claim 12,
    characterised in that
    the operating element extends transversely through the wall (23) of the static retaining structure (9).
  14. Device (1) as claimed in at least one of the preceding claims,
    characterised in that
    it is releasably secured to the explosion forming die (5, 6) as a unit.
  15. Device (1) as claimed in at least one of the preceding claims,
    characterised in that
    the static retaining structure (9) has an approximately annular closed structure.
EP07819178A 2006-12-01 2007-10-19 Closure device for explosion forming Not-in-force EP2097188B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006056788A DE102006056788B4 (en) 2006-12-01 2006-12-01 Closing device for explosion forming
PCT/EP2007/009113 WO2008064746A1 (en) 2006-12-01 2007-10-19 Closure device for explosion forming

Publications (2)

Publication Number Publication Date
EP2097188A1 EP2097188A1 (en) 2009-09-09
EP2097188B1 true EP2097188B1 (en) 2012-10-17

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US (1) US8250892B2 (en)
EP (1) EP2097188B1 (en)
DE (1) DE102006056788B4 (en)
WO (1) WO2008064746A1 (en)

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DE102005025660B4 (en) 2005-06-03 2015-10-15 Cosma Engineering Europe Ag Apparatus and method for explosion forming
DE102006037742B4 (en) 2006-08-11 2010-12-09 Cosma Engineering Europe Ag Method and apparatus for explosion forming
DE102006037754B3 (en) 2006-08-11 2008-01-24 Cosma Engineering Europe Ag Procedure for the explosion forming, comprises arranging work piece in tools and deforming by means of explosion means, igniting the explosion means in ignition place of the tools using induction element, and cooling the induction element
DE102006056788B4 (en) 2006-12-01 2013-10-10 Cosma Engineering Europe Ag Closing device for explosion forming
DE102006060372A1 (en) 2006-12-20 2008-06-26 Cosma Engineering Europe Ag Workpiece for explosion reformation process, is included into molding tool and is deformed from output arrangement by explosion reformation
DE102007007330A1 (en) 2007-02-14 2008-08-21 Cosma Engineering Europe Ag Method and tool assembly for explosion forming
DE102007036196A1 (en) 2007-08-02 2009-02-05 Cosma Engineering Europe Ag Apparatus for supplying a fluid for explosion forming
US9636736B2 (en) * 2007-12-13 2017-05-02 Cosma Engineering Europe Ag Method and mould arrangement for explosion forming
DE102008006979A1 (en) 2008-01-31 2009-08-06 Cosma Engineering Europe Ag Device for explosion forming

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EP2097188A1 (en) 2009-09-09
DE102006056788B4 (en) 2013-10-10
US20100064752A1 (en) 2010-03-18
US8250892B2 (en) 2012-08-28
WO2008064746A1 (en) 2008-06-05

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