EP2081707B1 - Tool and machine tool for working plate-like workpieces, in particular metal sheets - Google Patents

Tool and machine tool for working plate-like workpieces, in particular metal sheets Download PDF

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Publication number
EP2081707B1
EP2081707B1 EP20070818532 EP07818532A EP2081707B1 EP 2081707 B1 EP2081707 B1 EP 2081707B1 EP 20070818532 EP20070818532 EP 20070818532 EP 07818532 A EP07818532 A EP 07818532A EP 2081707 B1 EP2081707 B1 EP 2081707B1
Authority
EP
European Patent Office
Prior art keywords
tool
activating
processing
workpiece
tool portion
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
Application number
EP20070818532
Other languages
German (de)
French (fr)
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EP2081707A1 (en
Inventor
Werner Erlenmaier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Trumpf Werkzeugmaschinen SE and Co KG
Original Assignee
Trumpf Werkzeugmaschinen SE and Co KG
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.)
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Publication of EP2081707A1 publication Critical patent/EP2081707A1/en
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Publication of EP2081707B1 publication Critical patent/EP2081707B1/en
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Classifications

    • 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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • 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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/12—Punching using rotatable carriers
    • B21D28/125—Punching using rotatable carriers with multi-tools
    • 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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/36—Perforating, i.e. punching holes using rotatable work or tool holders
    • 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
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8727—Plural tools selectively engageable with single drive
    • Y10T83/8732—Turret of tools

Definitions

  • the invention relates to a machine tool with such a tool.
  • multitools Tools of the above type are referred to as “multiple tools", or as “multitools”.
  • multiple tools from the document DE-A-10 2005 005 214 known.
  • the prior art tool has an upper tool drivingly connected to a lifting drive with a plurality of punching / forming dies of different shape.
  • An associated lower tool has a corresponding number of punching / forming dies, the geometry of which is matched to that of the respectively associated punch.
  • the punch which is part of the punch / die mating to be activated, is transferred to a position in which it protrudes toward the workpiece with respect to the other punches. Accordingly, the activation device of the previously known tool or the previously known machine tool is provided on the drive connected to the lifting drive upper tool.
  • the present invention has set itself the goal of increasing the performance of conventional workpiece machining.
  • the activation device is not provided on the drive-connected with a lifting drive, but rather provided on the second tool part.
  • that counterpart device which is part of the device pairing to be activated is converted into a functional position according to the invention.
  • the counterpart device in question is in the workpiece machining against its position in an inoperative state to the workpiece ago.
  • the counter-devices if it is necessary for the workpiece machining, in their workpiece-near functional position, otherwise, if they are not needed for the workpiece machining, in their work remotely functional position.
  • unwanted influences can be avoided by the counterparts not required in the respective workpiece machining.
  • the respectively unnecessary counterparts which are not part of the activated device pairing, act on the workpiece in an undesirable manner.
  • the tool according to the invention or the machine tool according to the invention perform workpiece machining, which can not be performed with a tool or with a machine tool according to the prior art without tool change.
  • the tool according to the invention has a low interference contour in the immediate vicinity of the workpiece.
  • an additional activation device is provided on the first tool part. In this way, any disturbing influences of processing equipment, which are not part of the activated device pairing avoided. The same applies in the case of the machine tool according to claim 11.
  • At least one counter device can be converted under gravity into its non-functional position.
  • Way tool elements such as return springs, can be saved.
  • At least one counter device is designed as a processing punch, in particular as a forming punch.
  • multiple tools according to the invention can be used, in particular, to create transformations extending from the workpiece plane in the direction of the first tool part connected to a lifting drive. If the second tool part is the lower tool part, then upward transformations are possible. Upwardly directed deformations have the advantage over downwards forming that they do not collide with a workpiece table supporting the workpiece.
  • a compact design of the tool according to the invention results according to claim 7, by the counter-devices follow one another about the activation axis of rotation. Alternatively or additionally, the same applies to the processing equipment.
  • the activation rotational movement is performed about a tool axis of rotation about which the tool parts are rotatable by means of the rotary drive. So usually existing tool rotary actuators are used for the activation rotational movement.
  • an indexing switching device for the second tool part is provided on the machine tool according to claim 10.
  • the Indexier-switching device can in a simple manner either an activation-rotational movement of the hemhein monoen activation element or a joint rotational movement of the counter-devices and the hemein monoen activation element can be effected.
  • a corresponding Indexier-switching device is provided for the first tool part. Consequently, both the part of the rotary drive for the first tool part and the part of the rotary drive for the second tool part for the activation rotary movement and the respective joint rotation of the tool parts can be used.
  • a highly flexible machine tool results according to claim 13, by a lifting drive is also provided for the second tool part.
  • a working stroke can be performed by means of the lifting drive for the first tool part and / or by means of the lifting drive for the second tool part.
  • a machine tool 1 comprises a tool 2 with a first tool part in the form of an upper tool 4 drivingly connected to a lifting drive 3 and a second tool part in the form of a lower tool 5.
  • the upper tool 4 is attached to an upper tool holder 6, the lower tool 5 to a lower tool holder 7 clamped. Both tool parts are arranged along a stroke axis 8 defined by the lifting drive 3 and assigned to each other along the lifting axis 8 opposite sides of a sheet 9 to be processed.
  • the sheet 9 resting on a workpiece table 10 is moved relative to the tool 2 by means of a coordinate guide 11.
  • the upper tool 4 can be raised and lowered by means of the lifting drive 3 along the lifting axis 8.
  • the lower tool 5 can also be raised and lowered along the lifting axis 8 by means of a lifting drive 12 (not shown).
  • a respective rotary drive 13 on the upper tool holder 6 and on the lower tool holder 7, the upper tool 4 and the lower tool 5 are rotatable about a tool rotation axis 14.
  • indexing switching devices 15 and 16 which are illustrated in a simplified form as pinions, are provided on the upper tool holder 6 and on the lower tool holder 7.
  • All drives of the machine tool 1 are controlled by a central numerical control unit 17.
  • FIG. 2 has the tool 2 off FIG. 1 on the upper tool 4 five different processing devices in the form of fürzugsmatrizen, which is assigned the reference numeral 20 in their entirety.
  • Each of the pull-through matrices 20 is associated with a counter-device in the form of a pull-through punch on the lower tool 5.
  • the five puncture punches are designated in their entirety by the reference numeral 21 and are in FIG. 2 covered by a workpiece support 22 of the lower tool 5. Only the tip of a passage punch 21.1 is visible in an opening of the workpiece support 22.
  • passages of five different sizes can be created on the sheet 9 to be machined, without requiring a tool change.
  • the upper tool 4 On a base body 23, the upper tool 4 has a shaft 24, by means of which the upper tool 4 is clamped in the upper tool holder 6.
  • a provided with a toothing 25 activation element 26 is rotatably mounted on the main body 23 of the upper tool 4 about the tool axis of rotation 14.
  • the lower tool 5 has a base body 27 on which an activation element 28 with a toothing 29 is rotatable about the tool rotation axis 14.
  • the activation elements 26 and 28 are parts of activation devices of the upper tool 4 and the lower tool 5, whose operation is explained below.
  • FIGS. 3 and 4 the upper tool 4 and the lower tool 5 are shown in a sectional view along a device pairing activated for workpiece machining with a passage die 20.1 and the passage punch 21.1.
  • the base body 27 of the lower tool 5 has a base plate 30 and a guide plate 32 connected to the base plate 30 by means of a screw connection 31.
  • An anti-rotation 33 sets the guide plate 32 in a defined rotational position relative to the base plate 30.
  • the guide plate 32 has five guide holes 34 which follow one another along a circular path about the tool axis of rotation 14 and of which in FIG. 4 one is recognizable.
  • the guide holes 34 form slideways for the along the lifting axis 8 relative to the guide plate 32 displaceable pass-through punch 21. Accordingly, the passage punch 21 are arranged on a circular path about the tool axis of rotation 14.
  • the guide plate 32 Furthermore, on the guide plate 32 five ball bushings 35 are provided, which are part of guides 36 for the workpiece support 22.
  • An annular recess 37 at the top of the guide plate 32 serves to receive a spring element in the form of an Eladurrings 38.
  • Eladurrings 38 By means of Eladurrings 38, the workpiece support 22 is resiliently supported on the guide plate 32.
  • the guide plate 32 emanating from its rest position according to FIG. 4 against the spring force of Eladurrings 38 perform a downward stroke.
  • the pot-like activation element 28 of the lower tool 5 is rotatably mounted relative to the base plate 30 and the guide plate 32 about the tool axis of rotation 14.
  • An annular bottom 39 of the activation element 28 increases in the circumferential direction in the manner of a ramp and has a starting slope 40.
  • the activation element 28 In order to transfer the passage punch 21.1 into an inoperative position, the activation element 28 is rotated about the tool rotation axis 14 with an activation rotational movement until the approach slope 40 is no longer located under the passage punch 21.1. Under the effect of gravity, the pull-through punch 21.1 slides down from its functional position into its working-distance, inoperative position. Instead of the passage punch 21.1 another one of the punch 21 is now activated for the workpiece machining.
  • the lower tool 5 has a plurality of depressions, in which, depending on the rotational position of the activation element 28, a spring-loaded detent ball 41 engages.
  • the function of the detent ball 41 will be described below in connection with the operations in the activation rotational movement.
  • FIG. 3 is the main body 23 of the upper tool 4 corresponding to the main body 27 of the lower tool 5 constructed. It has a base plate 43 and a guide plate 44 connected to the base plate 43 and secured against rotation.
  • the passage matrices 20 are displaceably mounted on guide bores 45 of the guide plate 44 along the stroke axis 8.
  • the activation device of the upper tool in accordance with the activation device of the lower tool 5, has a rotationally adjustable activation element 26 with a starting slope 46 arranged between the base plate 43 and the guide plate 44.
  • the Anfahrschräge 46 is in FIG. 3 arranged above the passage die 20.1. Consequently, the passage matrix 20.1 also remains in an upwardly directed application of force in a workpiece-near functional position.
  • the four non-activated draft matrices are also in their functional position. For example, this is evident from the pull-through matrix 20.2. But they are in the Workpiece processing subjected to an upward force, they move from their functional position upwards in a non-functional position. For example, such a force application can be caused by a deformation already present on the sheet 9 to be processed.
  • the sheet 9 to be processed is positioned by means of the coordinate guide 11 over the punch-through punch 21.1 and under the pull-through die 20.1.
  • the sheet metal 9 to be machined rests on the workpiece support 22 of the lower tool 5.
  • the upper tool 4 is lowered by means of the lifting drive 3 jointly with the pull-through matrices 20, in particular the pull-through matrix 20.1, along the lifting axis 8 in the direction of the lower tool 5 until the pull-through matrices 20 put on top of the sheet 2.
  • the working stroke is carried out by means of the lifting drive 3 for the upper tool 4.
  • the working stroke can also be effected by means of the lifting drive 12 for the lower tool 5 or even superimposed by means of both lifting drives 3 and 12.
  • the upper tool 4 and the lower tool 5 are again moved apart along the lifting axis 8.
  • the workpiece support 22 is under the action of the Eladurringes 38 back to its original position and presses the processed sheet 2 of the punch 21.1. Accordingly, the workpiece support 22 serves as Maschinen Swissabstreifer for the passage punch 21st
  • the fein monoe activation element 28 of the lower tool 5 is rotated with an activation rotational movement relative to the pass punches 21. This is accompanied by a rotational movement of the activation element 28 also relative to the base plate 30 of the guide plate 32 and the workpiece support 22.
  • the activation rotational movement takes place about the tool axis of rotation 14, which consequently forms an activation axis of rotation.
  • the activation rotational movement ends when the Auffahrschräge 40 is disposed under the to be activated punch.
  • the activation element 26 of the upper tool 4 is rotated with an activation rotational movement about the tool rotation axis 14 relative to the passage matrices 20 until the approach slope 46 of the activation element 26 is arranged above the passage matrix to be activated.
  • the activation rotational movements of the activation element 28 are realized by means of the machine-side rotary drive 13.
  • the activation element 28 has the toothing 29.
  • the machine side, engaging in the toothing 29, for simplicity illustrated as a pinion Indexier-switching device 16 can be at a rotation of the main body 27 of the lower tool 5 to the tool rotation axis 14 either a rotation of the activation element 28 simultaneously with the main body 27 to (first switching state) or prevents the activation element 28 at a common rotational movement with the main body 27 (second switching state). If the activation element 28 is prevented from rotating with the base body 27, rotation of the base body 27 causes a relative movement of the base body 27 and the passage punch 21 mounted on the base body 27 relative to the activation element 28.
  • the joint rotation of the activation element 28 and the base body 27 in the first switching state of the Indexier-switching device 16 is used to align the passage punch 21 relative to the sheet 9 to be machined to the tool axis of rotation 14.
  • An undesirable rotation of the activation element 28 relative to the base body 27 is characterized by the Detent ball 41 prevents.
  • the control of the activation rotational movement of the activation element 26 on the upper tool 4 by means of the Indexier-switching device 15 is carried out according to the control of the activation rotational movement of the activation element 28 of the lower tool fifth
  • the bottom 39 of the activation element 28 of the lower tool has 5 recesses, through which can be removed after removal of the base plate 30 to be replaced pull-through punch 21 down.
  • the replacement of worn or destroyed puncture punches 21 can therefore be carried out in a simple manner after loosening the screw 31.
  • Modified designs of the tool 2 may, for example, instead of stamping dies and forming dies also have punches and punching dies. Furthermore, notwithstanding the illustrated tool, the processing devices and / or the counter-devices can be returned to their non-functional position by means of spring elements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Turning (AREA)
  • Milling, Broaching, Filing, Reaming, And Others (AREA)
  • Lead Frames For Integrated Circuits (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Abstract

Machines and tools that can be used to process (e.g., to cut and/or form) plate-like workpieces, such as metal sheets. In some aspects, a plate workpiece processing tool includes a first tool portion, which is drivingly connectable to a stroke drive, and a second tool portion. The tool has at least one processing device on the first tool portion and at least two counter-devices on the second tool portion. By using an activating device provided on the second tool portion, different device pairings can be activated for workpiece processing.

Description

Die Erfindung betrifft ein Werkzeug für eine Werkzeugmaschine zum Bearbeiten, insbesondere zum Schneiden und/oder zum Umformen, von plattenartigen Werkstücken, insbesondere von Blechen mit

  • einem ersten Werkzeugteil, welcher mit einem Hubantrieb antriebsverbindbar ist, sowie einem zweiten Werkzeugteil, wobei der erste Werkzeugteil und der zweite Werkzeugteil Seiten eines zu bearbeitenden Werkstückes zuordenbar sind, die einander entlang einer Hubachse gegenüberliegen,
  • wenigstens einer Bearbeitungseinrichtung an dem ersten Werkzeugteil und wenigstens zwei Gegeneinrichtungen an dem zweiten Werkzeugteil, wobei eine Bearbeitungseinrichtung des ersten Werkzeugteiles zur Werkstückbearbeitung entlang der Hubachse auf eine Gegeneinrichtung des zweiten Werkzeugteiles zu bewegbar ist,
  • einer Aktivierungseinrichtung, mittels derer durch eine AktivierungsDrehbewegung eines dreheinstellbaren Aktivierungselementes um eine Aktivierungs-Drehachse unterschiedliche Einrichtungspaarungen mit jeweils einer Bearbeitungseinrichtung und einer Gegeneinrichtung für die Werkstückbearbeitung aktivierbar sind.
The invention relates to a tool for a machine tool for machining, in particular for cutting and / or forming, of plate-like workpieces, in particular of sheets with
  • a first tool part, which can be drive-connected with a lifting drive, and a second tool part, wherein the first tool part and the second tool part can be assigned to sides of a workpiece to be machined, which lie opposite each other along a stroke axis,
  • at least one processing device on the first tool part and at least two counter devices on the second tool part, wherein a processing device of the first tool part for workpiece machining along the stroke axis is movable toward a counter-device of the second tool part,
  • an activation device, by means of which different device pairings, each with a processing device and a counter device for workpiece machining, can be activated by an activation rotational movement of a rotationally adjustable activation element about an activation rotational axis.

Des Weiteren betrifft die Erfindung eine Werkzeugmaschine mit einem derartigen Werkzeug.Furthermore, the invention relates to a machine tool with such a tool.

Werkzeuge der vorstehenden Art werden als "Mehrfachwerkzeuge", oder auch als "Multitools" bezeichnet. Beispielweise ist ein derartiges Mehrfachwerkzeug aus der Druckschrift DE-A-10 2005 005 214 bekannt. Das vorbekannte Werkzeug besitzt ein mit einem Hubantrieb antriebsverbundenes Oberwerkzeug mit mehreren Stanz-/Umformstempeln von unterschiedlicher Form. Ein zugehöriges Unterwerkzeug weist eine entsprechende Anzahl an Stanz-/Umformmatrizen auf, deren Geometrie auf diejenige des ihnen jeweils zugeordneten Stempels abgestimmt ist.Tools of the above type are referred to as "multiple tools", or as "multitools". For example, such a multiple tool from the document DE-A-10 2005 005 214 known. The prior art tool has an upper tool drivingly connected to a lifting drive with a plurality of punching / forming dies of different shape. An associated lower tool has a corresponding number of punching / forming dies, the geometry of which is matched to that of the respectively associated punch.

Zur Aktivierung einer Stempel-/Matrizen-Paarung für die Werkstückbearbeitung wird der Stempel, welcher Teil der zu aktivierenden Stempel-/Matrizen-Paarung ist, in eine Stellung überführt, in der er gegenüber den anderen Stempeln zu dem Werkstück hin vorsteht. Demnach ist die Aktivierungseinrichtung des vorbekannten Werkzeuges beziehungsweise der vorbekannten Werkzeugmaschine an dem mit dem Hubantrieb antriebsverbundenen Oberwerkzeug vorgesehen.To activate a punch / die pairing for workpiece machining, the punch, which is part of the punch / die mating to be activated, is transferred to a position in which it protrudes toward the workpiece with respect to the other punches. Accordingly, the activation device of the previously known tool or the previously known machine tool is provided on the drive connected to the lifting drive upper tool.

Die vorliegende Erfindung hat sich zum Ziel gesetzt, die Leistungsfähigkeit der gängigen Werkstückbearbeitung zu erhöhen.The present invention has set itself the goal of increasing the performance of conventional workpiece machining.

Erfindungsgemäß gelöst wird diese Aufgabe durch die Vorrichtungen nach den Patentansprüchen 1 und 8.This object is achieved according to the invention by the devices according to claims 1 and 8.

Gemäß den Patentansprüchen 1 und 8 ist die Aktivierungseinrichtung nicht an dem mit einem Hubantrieb antriebsverbindbaren, sondern vielmehr an dem zweiten Werkzeugteil vorgesehen. Durch die Aktivierungsdrehbewegung des dreheinstellbaren Aktivierungselementes wird erfindungsgemäß diejenige Gegeneinrichtung, welche Teil der zu aktivierenden Einrichtungspaarung ist, in eine Funktionsstellung überführt. In ihrer Funktionsstellung steht die betreffende Gegeneinrichtung bei der Werkstückbearbeitung gegenüber ihrer Stellung bei einem Außerfunktionszustand zu dem Werkstück hin vor.According to claims 1 and 8, the activation device is not provided on the drive-connected with a lifting drive, but rather provided on the second tool part. As a result of the activation rotational movement of the rotationally adjustable activation element, that counterpart device which is part of the device pairing to be activated is converted into a functional position according to the invention. In its functional position, the counterpart device in question is in the workpiece machining against its position in an inoperative state to the workpiece ago.

Erfindungsgemäß befinden sich die Gegeneinrichtungen, wenn es für die Werkstückbearbeitung erforderlich ist, in ihrer werkstücknahen Funktionsstellung, andernfalls, wenn sie für die Werkstückbearbeitung nicht benötigt werden, in ihrer werkstückfernen Außerfunktionsstellung. Infolgedessen können unerwünschte Einflüsse durch die bei der jeweiligen Werkstückbearbeitung nicht benötigten Gegeneinrichtungen vermieden werden. Beispielsweise wird verhindert, dass beim Einsatz von Gegeneinrichtungen, welche bei der Werkstückbearbeitung in Richtung des mit einem Hubantrieb verbundenen ersten Werkzeugteiles in das Werkstück eindringen, die jeweils nicht benötigten Gegeneinrichtungen, die nicht Teil der aktivierten Einrichtungspaarung sind, in unerwünschter Weise das Werkstück beaufschlagen. Insgesamt kann das erfindungsgemäße Werkzeug bzw. die erfindungsgemäße Werkzeugmaschine Werkstückbearbeitungen durchführen, welche mit einem Werkzeug bzw. mit einer Werkzeugmaschine nach dem Stand der Technik nicht ohne Werkzeugwechsel durchführbar sind. Des Weiteren weist das erfindungsgemäße Werkzeug eine geringe Störkontur in unmittelbarer Werkstücknähe auf.According to the counter-devices, if it is necessary for the workpiece machining, in their workpiece-near functional position, otherwise, if they are not needed for the workpiece machining, in their work remotely functional position. As a result, unwanted influences can be avoided by the counterparts not required in the respective workpiece machining. For example, it is prevented that when using counter-devices, which penetrate in the workpiece in the direction of connected to a lifting drive first tool part into the workpiece, the respectively unnecessary counterparts, which are not part of the activated device pairing, act on the workpiece in an undesirable manner. Overall, the tool according to the invention or the machine tool according to the invention perform workpiece machining, which can not be performed with a tool or with a machine tool according to the prior art without tool change. Furthermore, the tool according to the invention has a low interference contour in the immediate vicinity of the workpiece.

Besondere Ausführungsarten des erfindungsgemäßen Werkzeuges und der erfindungsgemäßen Werkzeugmaschine ergeben sich aus den abhängigen Patentansprüchen 2 bis 7 und 9 bis 14.Particular embodiments of the tool according to the invention and the machine tool according to the invention will become apparent from the dependent claims 2 to 7 and 9 to 14.

Gemäß Patentanspruch 2 ist eine zusätzliche Aktivierungseinrichtung an dem ersten Werkzeugteil vorgesehen. Auf diese Weise werden eventuelle störende Einflüsse von Bearbeitungseinrichtungen, welche nicht Teil der aktivierten Einrichtungspaarung sind, vermieden. Gleiches gilt im Falle der Werkzeugmaschine gemäß Patentanspruch 11.According to claim 2, an additional activation device is provided on the first tool part. In this way, any disturbing influences of processing equipment, which are not part of the activated device pairing avoided. The same applies in the case of the machine tool according to claim 11.

Im Falle der Ausführungsform gemäß Patentanspruch 3 ergibt sich in einfacher Weise eine definierte Lage des zu bearbeitenden Werkstückes gegenüber den Gegeneinrichtungen, indem das zweite Werkzeugteil an seiner dem Werkstück zugeordneten Seite eine Werkstückauflage ausbildet.In the case of the embodiment according to claim 3 results in a simple way a defined position of the workpiece to be machined against the counter-devices by the second tool part forms on its side associated with the workpiece a workpiece support.

Ein funktionssicheres Entfernen der Gegeneinrichtungen von dem Werkstück nach der Werkstückbearbeitung ist gemäß Patentanspruch 4 möglich. Demnach dient die an dem zweiten Werkzeugteil vorgesehene Werkstückauflage als Werkstückabstreifer.A functionally reliable removal of the counter-devices from the workpiece after workpiece machining is possible according to claim 4. Accordingly, the provided on the second tool part workpiece support serves as Werkstückabstreifer.

Gemäß Patentanspruch 5 ist zumindest eine Gegeneinrichtung unter Schwerkraftwirkung in ihre Außerfunktionsstellung überführbar. Auf dieseAccording to claim 5, at least one counter device can be converted under gravity into its non-functional position. To this

Weise können Werkzeugelemente, beispielsweise Rückstellfedern, eingespart werden.Way tool elements, such as return springs, can be saved.

Gemäß Patentanspruch 6 ist zumindest eine Gegeneinrichtung als Bearbeitungsstempel, insbesondere als Umformstempel, ausgebildet. Demzufolge können erfindungsgemäße Mehrfachwerkzeuge insbesondere zum Erstellen von aus der Werkstückebene in Richtung auf das mit einem Hubantrieb verbundene, erste Werkzeugteil verlaufende Umformungen eingesetzt werden. Handelt es sich bei dem zweiten Werkzeugteil um das untere Werkzeugteil sind folglich Umformungen nach oben möglich. Nach oben gerichtete Umformungen haben gegenüber Umformungen nach unten den Vorteil, dass sie nicht mit einem das Werkstück lagernden Werkstücktisch kollidieren.According to claim 6, at least one counter device is designed as a processing punch, in particular as a forming punch. As a result, multiple tools according to the invention can be used, in particular, to create transformations extending from the workpiece plane in the direction of the first tool part connected to a lifting drive. If the second tool part is the lower tool part, then upward transformations are possible. Upwardly directed deformations have the advantage over downwards forming that they do not collide with a workpiece table supporting the workpiece.

Eine kompakte Bauart des erfindungsgemäßen Werkzeuges ergibt sich nach Patentanspruch 7, indem die Gegeneinrichtungen um die Aktivierungs-Drehachse aufeinander folgen. Alternativ oder ergänzend gilt Entsprechendes für die Bearbeitungseinrichtungen.A compact design of the tool according to the invention results according to claim 7, by the counter-devices follow one another about the activation axis of rotation. Alternatively or additionally, the same applies to the processing equipment.

Im Falle der Werkzeugmaschine gemäß Patentanspruch 9 wird die Aktivierungs-Drehbewegung um eine Werkzeugdrehachse ausgeführt, um welche die Werkzeugteile mittels des Drehantriebes drehbar sind. So werden üblicherweise vorhandene Werkzeugdrehantriebe für die AktivierungsDrehbewegung genutzt.In the case of the machine tool according to claim 9, the activation rotational movement is performed about a tool axis of rotation about which the tool parts are rotatable by means of the rotary drive. So usually existing tool rotary actuators are used for the activation rotational movement.

Zusätzlich ist an der Werkzeugmaschine gemäß Patentanspruch 10 eine Indexier-Schalteinrichtung für das zweite Werkzeugteil vorgesehen. Mittels der Indexier-Schalteinrichtung kann in einfacher Weise entweder eine Aktivierungs-Drehbewegung des dreheineinstellbaren Aktivierungselementes oder eine gemeinschaftliche Drehbewegung der Gegeneinrichtungen und des dreheinstellbaren Aktivierungselementes bewirkt werden.In addition, an indexing switching device for the second tool part is provided on the machine tool according to claim 10. By means of the Indexier-switching device can in a simple manner either an activation-rotational movement of the drehheinstellbaren activation element or a joint rotational movement of the counter-devices and the dreheinstellbaren activation element can be effected.

Nach Patentanspruch 12 ist eine entsprechende Indexier-Schalteinrichtung für das erste Werkzeugteil vorgesehen. Folglich kann sowohl der Teil des Drehantriebes für den ersten Werkzeugteil als auch der Teil des Drehantriebes für den zweiten Werkzeugteil für die Aktivierungs-Drehbewegung und das jeweilige gemeinschaftliche Drehen der Werkzeugteile genutzt werden.According to claim 12, a corresponding Indexier-switching device is provided for the first tool part. Consequently, both the part of the rotary drive for the first tool part and the part of the rotary drive for the second tool part for the activation rotary movement and the respective joint rotation of the tool parts can be used.

Eine hoch flexible Werkzeugmaschine ergibt sich nach Patentanspruch 13, indem ein Hubantrieb auch für den zweiten Werkzeugteil vorgesehen ist. Je nach Art der Werkstückbearbeitung kann ein Arbeitshub mittels des Hubantriebes für den ersten Werkzeugteil und/oder mittels des Hubantriebes für den zweiten Werkzeugteil ausgeführt werden.A highly flexible machine tool results according to claim 13, by a lifting drive is also provided for the second tool part. Depending on the type of workpiece machining, a working stroke can be performed by means of the lifting drive for the first tool part and / or by means of the lifting drive for the second tool part.

Nachstehend wird die Erfindung anhand beispielhafter schematischer Darstellungen näher erläutert. Es zeigen:

Figur 1:
eine schematische Darstellung einer Werkzeugmaschine zum Schneiden und/oder zum Umformen von Blechen,
Figur 2:
ein Werkzeug mit einem oberen und einem unteren Werkzeug- teil zum Umformen von Blechen,
Figur 3:
eine Schnittdarstellung des oberen Werkzeugteils des Werk- zeuges aus Figur 2 und
Figur 4:
eine Schnittdarstellung des unteren Werkzeugteils des Werk- zeuges aus Figur 2.
The invention will be explained in more detail below with reference to exemplary schematic illustrations. Show it:
FIG. 1:
a schematic representation of a machine tool for cutting and / or forming of sheets,
FIG. 2:
a tool with an upper and a lower tool part for forming sheet metal,
FIG. 3:
a sectional view of the upper tool part of the tool FIG. 2 and
FIG. 4:
a sectional view of the lower tool part of the tool from FIG. 2 ,

Gemäß Figur 1 umfasst eine Werkzeugmaschine 1 ein Werkzeug 2 mit einem ersten Werkzeugteil in Form eines mit einem Hubantrieb 3 antriebsverbundenen Oberwerkzeuges 4 und mit einem zweiten Werkzeugteil in Form eines Unterwerkzeuges 5. Das Oberwerkzeug 4 ist an einer oberen Werkzeugaufnahme 6, das Unterwerkzeug 5 an einer unteren Werkzeugaufnahme 7 eingespannt. Beide Werkzeugteile sind entlang einer mittels des Hubantriebes 3 definierten Hubachse 8 angeordnet und einander entlang der Hubachse 8 gegenüberliegenden Seiten eines zu bearbeitenden Bleches 9 zugeordnet. Zur Werkstückbearbeitung wird das auf einem Werkstücktisch 10 lagernde Blech 9 mittels einer Koordinatenführung 11 relativ zu dem Werkzeug 2 bewegt.According to FIG. 1 For example, a machine tool 1 comprises a tool 2 with a first tool part in the form of an upper tool 4 drivingly connected to a lifting drive 3 and a second tool part in the form of a lower tool 5. The upper tool 4 is attached to an upper tool holder 6, the lower tool 5 to a lower tool holder 7 clamped. Both tool parts are arranged along a stroke axis 8 defined by the lifting drive 3 and assigned to each other along the lifting axis 8 opposite sides of a sheet 9 to be processed. For workpiece machining, the sheet 9 resting on a workpiece table 10 is moved relative to the tool 2 by means of a coordinate guide 11.

Das Oberwerkzeug 4 ist mittels des Hubantriebes 3 entlang der Hubachse 8 heb- und senkbar. Ergänzend ist das Unterwerkzeug 5 mittels eines nicht näher dargestellten Hubantriebes 12 ebenfalls entlang der Hubachse 8 heb- und senkbar. Durch jeweils einen Drehantrieb 13 an der oberen Werkzeugaufnahme 6 sowie an der unteren Werkzeugaufnahme 7 sind das Oberwerkzeug 4 und das Unterwerkzeug 5 um eine Werkzeugdrehachse 14 drehbar.The upper tool 4 can be raised and lowered by means of the lifting drive 3 along the lifting axis 8. In addition, the lower tool 5 can also be raised and lowered along the lifting axis 8 by means of a lifting drive 12 (not shown). By a respective rotary drive 13 on the upper tool holder 6 and on the lower tool holder 7, the upper tool 4 and the lower tool 5 are rotatable about a tool rotation axis 14.

Des Weiteren sind an der oberen Werkzeugaufnahme 6 und an der unteren Werkzeugaufnahme 7 in vereinfachter Form als Ritzel dargestellte Indexier-Schalteinrichtungen 15 und 16 vorgesehen.Furthermore, indexing switching devices 15 and 16, which are illustrated in a simplified form as pinions, are provided on the upper tool holder 6 and on the lower tool holder 7.

Sämtliche Antriebe der Werkzeugmaschine 1 werden über eine zentrale numerische Steuereinheit 17 gesteuert.All drives of the machine tool 1 are controlled by a central numerical control unit 17.

Gemäß Figur 2 besitzt das Werkzeug 2 aus Figur 1 an dem Oberwerkzeug 4 fünf unterschiedliche Bearbeitungseinrichtungen in Form von Durchzugsmatrizen, denen in ihrer Gesamtheit das Bezugszeichen 20 zugeordnet ist. Jeder der Durchzugsmatrizen 20 ist eine Gegeneinrichtung in Form eines Durchzugsstempels an dem Unterwerkzeug 5 zugeordnet. Die fünf Durchzugsstempel werden in ihrer Gesamtheit mit dem Bezugszeichen 21 bezeichnet und sind in Figur 2 durch eine Werkstückauflage 22 des Unterwerkzeuges 5 verdeckt. Lediglich die Spitze eines Durchzugsstempels 21.1 ist in einer Öffnung der Werkstückauflage 22 sichtbar.According to FIG. 2 has the tool 2 off FIG. 1 on the upper tool 4 five different processing devices in the form of Durchzugsmatrizen, which is assigned the reference numeral 20 in their entirety. Each of the pull-through matrices 20 is associated with a counter-device in the form of a pull-through punch on the lower tool 5. The five puncture punches are designated in their entirety by the reference numeral 21 and are in FIG. 2 covered by a workpiece support 22 of the lower tool 5. Only the tip of a passage punch 21.1 is visible in an opening of the workpiece support 22.

Mittels der fünf unterschiedlichen Einrichtungspaarungen können Durchzüge mit fünf verschiedenen Größen an dem zu bearbeitenden Blech 9 erstellt werden, ohne dass ein Werkzeugwechsel erforderlich ist.By means of the five different device pairings, passages of five different sizes can be created on the sheet 9 to be machined, without requiring a tool change.

An einem Grundkörper 23 weist das Oberwerkzeug 4 einen Schaft 24 auf, mittels dessen das Oberwerkzeug 4 in der oberen Werkzeugaufnahme 6 eingespannt wird. Ein mit einer Verzahnung 25 versehenes Aktivierungselement 26 ist an dem Grundkörper 23 des Oberwerkzeuges 4 um die Werkzeugdrehachse 14 drehbar gelagert.On a base body 23, the upper tool 4 has a shaft 24, by means of which the upper tool 4 is clamped in the upper tool holder 6. A provided with a toothing 25 activation element 26 is rotatably mounted on the main body 23 of the upper tool 4 about the tool axis of rotation 14.

Das Unterwerkzeug 5 weist einen Grundkörper 27 auf, an dem ein Aktivierungselement 28 mit einer Verzahnung 29 um die Werkzeugdrehachse 14 drehbar ist.The lower tool 5 has a base body 27 on which an activation element 28 with a toothing 29 is rotatable about the tool rotation axis 14.

Die Aktivierungselemente 26 und 28 sind Teile von Aktivierungseinrichtungen des Oberwerkzeuges 4 und des Unterwerkzeuges 5, deren Funktionsweise nachstehend erläutert wird.The activation elements 26 and 28 are parts of activation devices of the upper tool 4 and the lower tool 5, whose operation is explained below.

In den Figuren 3 und 4 sind das Oberwerkzeug 4 und das Unterwerkzeug 5 in einer Schnittdarstellung entlang einer für die Werkstückbearbeitung aktivierten Einrichtungspaarung mit einer Durchzugsmatrize 20.1 und dem Durchzugsstempel 21.1 dargestellt.In the FIGS. 3 and 4 the upper tool 4 and the lower tool 5 are shown in a sectional view along a device pairing activated for workpiece machining with a passage die 20.1 and the passage punch 21.1.

Gemäß Figur 4 besitzt der Grundkörper 27 des Unterwerkzeuges 5 eine Grundplatte 30 und eine mit der Grundplatte 30 mittels einer Verschraubung 31 verbundene Führungsplatte 32. Eine Verdrehsicherung 33 legt die Führungsplatte 32 in einer definierten Drehstellung gegenüber der Grundplatte 30 fest.According to FIG. 4 the base body 27 of the lower tool 5 has a base plate 30 and a guide plate 32 connected to the base plate 30 by means of a screw connection 31. An anti-rotation 33 sets the guide plate 32 in a defined rotational position relative to the base plate 30.

Die Führungsplatte 32 weist fünf Führungsbohrungen 34 auf, welche entlang einer Kreisbahn um die Werkzeugdrehachse 14 aufeinander folgen und von denen in Figur 4 eine zu erkennen ist. Die Führungsbohrungen 34 bilden Gleitführungen für die entlang der Hubachse 8 gegenüber der Führungsplatte 32 verschiebbaren Durchzugsstempel 21. Demzufolge sind auch die Durchzugsstempel 21 auf einer Kreisbahn um die Werkzeugdrehachse 14 angeordnet.The guide plate 32 has five guide holes 34 which follow one another along a circular path about the tool axis of rotation 14 and of which in FIG. 4 one is recognizable. The guide holes 34 form slideways for the along the lifting axis 8 relative to the guide plate 32 displaceable pass-through punch 21. Accordingly, the passage punch 21 are arranged on a circular path about the tool axis of rotation 14.

Des Weiteren sind an der Führungsplatte 32 fünf Kugelbuchsen 35 vorgesehen, welche Bestandteil von Führungen 36 für die Werkstückauflage 22 sind. Eine ringförmige Ausnehmung 37 an der Oberseite der Führungsplatte 32 dient zur Aufnahme eines Federelementes in Form eines Eladurrings 38. Mittels des Eladurrings 38 ist die Werkstückauflage 22 an der Führungsplatte 32 federnd abgestützt. Somit kann die Führungsplatte 32 ausgehen von ihrer Ruhestellung gemäß Figur 4 gegen die Federkraft des Eladurrings 38 eine nach unten gerichtete Hubbewegung ausführen.Furthermore, on the guide plate 32 five ball bushings 35 are provided, which are part of guides 36 for the workpiece support 22. An annular recess 37 at the top of the guide plate 32 serves to receive a spring element in the form of an Eladurrings 38. By means of Eladurrings 38, the workpiece support 22 is resiliently supported on the guide plate 32. Thus, the guide plate 32 emanating from its rest position according to FIG. 4 against the spring force of Eladurrings 38 perform a downward stroke.

Das topfartige Aktivierungselement 28 des Unterwerkzeuges 5 ist gegenüber der Grundplatte 30 und der Führungsplatte 32 um die Werkzeugdrehachse 14 drehbar gelagert.The pot-like activation element 28 of the lower tool 5 is rotatably mounted relative to the base plate 30 and the guide plate 32 about the tool axis of rotation 14.

Ein ringförmiger Boden 39 des Aktivierungselementes 28 steigt in Umfangsrichtung nach Art einer Rampe an und weist eine Anfahrschräge 40 auf. Mittels der Anfahrschräge 40 wird derjenige Durchzugsstempel, welcher Teil der aktivierten Einrichtungspaarung ist, in seiner Funktionsstellung gehalten. Gemäß Figur 4 befindet sich der Durchzugsstempel 21.1 in seiner werkstücknahen Funktionsstellung. Wenn der Durchzugsstempel 21.1 bei der Werkstückbearbeitung mit einer nach unten gerichteten Kraft beaufschlagt wird, verhindert die Anfahrschräge 40, dass der Durchzugsstempel 21.1 entlang der parallel zu der Hubachse 8 verlaufenden Führungsbohrung 34 nach unten in eine Außerfunktionsstellung verschoben wird.An annular bottom 39 of the activation element 28 increases in the circumferential direction in the manner of a ramp and has a starting slope 40. By means of the Anfahrschräge 40 that passage punch, which is part of the activated device pairing, held in its functional position. According to FIG. 4 is the pull-through punch 21.1 in its workpiece-near functional position. If the passage punch 21.1 is subjected to a downward force during workpiece machining, the approach slope 40 prevents the passage punch 21.1 from being displaced downwardly into an inoperative position along the guide bore 34 running parallel to the lift axis 8.

Um den Durchzugsstempel 21.1 in eine Außerfunktionsstellung zu überführen, wird das Aktivierungselement 28 mit einer AktivierungsDrehbewegung um die Werkzeugdrehachse 14 gedreht, bis die Anfahrschräge 40 nicht mehr unter dem Durchzugsstempel 21.1 angeordnet ist. Unter Schwerkraftwirkung gleitet der Durchzugsstempel 21.1 aus seiner Funktionsstellung nach unten in seine werkstückferne Außerfunktionsstellung. Anstelle des Durchzugsstempels 21.1 ist nun ein anderer der Durchzugsstempel 21 für die Werkstückbearbeitung aktiviert.In order to transfer the passage punch 21.1 into an inoperative position, the activation element 28 is rotated about the tool rotation axis 14 with an activation rotational movement until the approach slope 40 is no longer located under the passage punch 21.1. Under the effect of gravity, the pull-through punch 21.1 slides down from its functional position into its working-distance, inoperative position. Instead of the passage punch 21.1 another one of the punch 21 is now activated for the workpiece machining.

Bei den Verhältnissen gemäß Figur 4 befinden sich die vier nicht aktivierten Durchzugsstempel, welche in der Ansicht gemäß Figur 4 nicht sichtbar sind, in ihrer Außerfunktionsstellung.In the conditions according to FIG. 4 are the four non-activated Durchzugsstempel, which in the view according to FIG. 4 are not visible in their non-functional position.

An der Unterseite des ringförmigen Bodens 39 weist das Unterwerkzeug 5 eine Vielzahl von Vertiefungen auf, in welche je nach Drehstellung des Aktivierungselementes 28 eine gefederte Rastkugel 41 eingreift. Die Funktion der Rastkugel 41 wird nachstehend im Zusammenhang mit den Abläufen bei der Aktivierungs-Drehbewegung beschrieben.At the bottom of the annular bottom 39, the lower tool 5 has a plurality of depressions, in which, depending on the rotational position of the activation element 28, a spring-loaded detent ball 41 engages. The function of the detent ball 41 will be described below in connection with the operations in the activation rotational movement.

Ein an dem Aktivierungselement 28 befestigter Schmutzring 42 verhindert durch eine Überlappung mit der Werkstückauflage 22, dass Schmutz zwischen der Werkstückauflage 22 und dem Aktivierungselement 28 in das Innere des Unterwerkzeuges 5 eindringen kann.An attached to the activation element 28 dirt ring 42 prevented by an overlap with the workpiece support 22 that dirt between the workpiece support 22 and the activation element 28 can penetrate into the interior of the lower tool 5.

Gemäß Figur 3 ist der Grundkörper 23 des Oberwerkzeuges 4 entsprechend dem Grundkörper 27 des Unterwerkzeuges 5 aufgebaut. Er besitzt eine Grundplatte 43 und eine mit der Grundplatte 43 verbundene und verdrehgesicherte Führungsplatte 44. Die Durchzugsmatrizen 20 sind an Führungsbohrungen 45 der Führungsplatte 44 entlang der Hubachse 8 verschiebbar gelagert.According to FIG. 3 is the main body 23 of the upper tool 4 corresponding to the main body 27 of the lower tool 5 constructed. It has a base plate 43 and a guide plate 44 connected to the base plate 43 and secured against rotation. The passage matrices 20 are displaceably mounted on guide bores 45 of the guide plate 44 along the stroke axis 8.

Die Aktivierungseinrichtung des Oberwerkzeuges 4 weist entsprechend der Aktivierungseinrichtung des Unterwerkzeuges 5 ein zwischen der Grundplatte 43 und der Führungsplatte 44 angeordnetes dreheinstellbares Aktivierungselement 26 mit einer Anfahrschräge 46 auf. Die Anfahrschräge 46 ist in Figur 3 über der Durchzugsmatrize 20.1 angeordnet. Folglich verbleibt die Durchzugsmatrize 20.1 auch bei einer nach oben gerichteten Kraftbeaufschlagung in einer werkstücknahen Funktionsstellung.The activation device of the upper tool 4, in accordance with the activation device of the lower tool 5, has a rotationally adjustable activation element 26 with a starting slope 46 arranged between the base plate 43 and the guide plate 44. The Anfahrschräge 46 is in FIG. 3 arranged above the passage die 20.1. Consequently, the passage matrix 20.1 also remains in an upwardly directed application of force in a workpiece-near functional position.

Bei der Situation gemäß Figur 3 befinden sich die vier nicht aktivierten Durchzugsmatrizen auch in ihrer Funktionsstellung. Beispielsweise ist dies anhand der Durchzugsmatrize 20.2 ersichtlich. Werden sie aber bei der Werkstückbearbeitung mit einer nach oben gerichteten Kraft beaufschlagt, so bewegen sie sich aus ihrer Funktionsstellung nach oben in eine Außerfunktionsstellung. Beispielweise kann eine derartige Kraftbeaufschlagung durch eine an dem zu bearbeitenden Blech 9 bereits vorhandene Umformung verursacht werden.According to the situation FIG. 3 The four non-activated draft matrices are also in their functional position. For example, this is evident from the pull-through matrix 20.2. But they are in the Workpiece processing subjected to an upward force, they move from their functional position upwards in a non-functional position. For example, such a force application can be caused by a deformation already present on the sheet 9 to be processed.

Im Folgenden wird exemplarisch ein Bearbeitungsvorgang mittels der gemäß den Figuren 3 und 4 aktivierten Einrichtungspaarung mit dem Durchzugsstempel 21.1 und der Durchzugsmatrize 20.1 erläutert.The following is an example of a processing operation by means of the according to the FIGS. 3 and 4 activated device pairing with the punch 21.1 and the pull-through die 20.1 explained.

Zu Beginn wird das zu bearbeitende Blech 9 mittels der Koordinatenführung 11 über dem Durchzugsstempel 21.1 und unter der Durchzugsmatrize 20.1 positioniert. Das zu bearbeitende Blech 9 lagert auf der Werkstückauflage 22 des Unterwerkzeuges 5. Anschließend wird das Oberwerkzeug 4 mittels des Hubantriebes 3 gemeinschaftlich mit den Durchzugsmatrizen 20, im Speziellen der Durchzugsmatrize 20.1, entlang der Hubachse 8 in Richtung auf das Unterwerkzeug 5 abgesenkt, bis die Durchzugsmatrizen 20 auf der Oberseite des Bleches 2 aufsetzen.At the beginning, the sheet 9 to be processed is positioned by means of the coordinate guide 11 over the punch-through punch 21.1 and under the pull-through die 20.1. The sheet metal 9 to be machined rests on the workpiece support 22 of the lower tool 5. Subsequently, the upper tool 4 is lowered by means of the lifting drive 3 jointly with the pull-through matrices 20, in particular the pull-through matrix 20.1, along the lifting axis 8 in the direction of the lower tool 5 until the pull-through matrices 20 put on top of the sheet 2.

Ausgehend von diesem Zustand erfolgt der eigentliche Arbeitshub, bei welchem das Oberwerkzeug 4 und das Unterwerkzeug 5 längs der Hubachse 8 gegeneinander bewegt werden. Dabei wird die Werkstückauflage 22 aufgrund der über das Blech 9 übertragenen Kraft gegen die Federkraft des Eladurrings 38 in Richtung auf die Führungsplatte 32 gedrückt. Gleichzeitig dringt der Durchzugsstempel 21.1 in das umzuformende Blech 9 ein und drückt es dabei nach oben in die Durchzugsmatrize 20.1. An dem Blech 9 wird ein Durchzug erstellt.Starting from this state, the actual working stroke, in which the upper tool 4 and the lower tool 5 are moved along the lifting axis 8 against each other. In this case, the workpiece support 22 is pressed against the spring force of the Eladurrings 38 in the direction of the guide plate 32 due to the force transmitted through the sheet 9. At the same time penetrate the punch 21.1 in the reshaped sheet 9, pushing it up into the pull-through die 20.1. On the plate 9 a draft is created.

Üblicherweise wird der Arbeitshub mittels des Hubantriebes 3 für das Oberwerkzeug 4 ausgeführt. Alternativ kann der Arbeitshub auch mittels des Hubantriebes 12 für das Unterwerkzeug 5 oder sogar überlagernd mittels beider Hubantriebe 3 und 12 erfolgen.Usually, the working stroke is carried out by means of the lifting drive 3 for the upper tool 4. Alternatively, the working stroke can also be effected by means of the lifting drive 12 for the lower tool 5 or even superimposed by means of both lifting drives 3 and 12.

Bei dem Arbeitshub und der damit verbundenen Abwärtsbewegung der Werkstückauflage 22 verkleinert sich der Innenraum des Unterwerkzeuges 5. Durchgangsbohrungen 47 und 48 ermöglichen, dass die hierdurch komprimierte Luft aus dem Unterwerkzeug 5 entweichen kann.In the working stroke and the associated downward movement of the workpiece support 22, the interior space of the lower tool 5 decreases. Through holes 47 and 48 allow the air compressed thereby to escape from the lower tool 5.

Nach dem Arbeitshub werden das Oberwerkzeug 4 und das Unterwerkzeug 5 wieder entlang der Hubachse 8 auseinander bewegt. Die Werkstückauflage 22 stellt sich unter der Wirkung des Eladurringes 38 in ihre Ausgangslage zurück und drückt dabei das bearbeitete Blech 2 von dem Durchzugsstempel 21.1. Demnach dient die Werkstückauflage 22 als Werkstückabstreifer für die Durchzugsstempel 21.After the working stroke, the upper tool 4 and the lower tool 5 are again moved apart along the lifting axis 8. The workpiece support 22 is under the action of the Eladurringes 38 back to its original position and presses the processed sheet 2 of the punch 21.1. Accordingly, the workpiece support 22 serves as Werkstückabstreifer for the passage punch 21st

Um ausgehend von den Verhältnissen gemäß den Figuren 3 und 4 eine andere Einrichtungspaarung für die Werkstückbearbeitung zu aktivieren, wird das dreheinstellbare Aktivierungselement 28 des Unterwerkzeuges 5 mit einer Aktivierungs-Drehbewegung relativ zu den Durchzugsstempeln 21 gedreht. Damit einher geht eine Drehbewegung des Aktivierungselementes 28 auch relativ zu der Grundplatte 30 der Führungsplatte 32 sowie der Werkstückauflage 22. Die Aktivierungs-Drehbewegung erfolgt um die Werkzeugdrehachse 14, die demzufolge eine Aktivierungs-Drehachse bildet. Die Aktivierungs-Drehbewegung endet, sobald die Auffahrschräge 40 unter dem zu aktivierenden Durchzugsstempel angeordnet ist.To start from the conditions according to FIGS. 3 and 4 to activate another pair of device for workpiece machining, the dreheinstellbare activation element 28 of the lower tool 5 is rotated with an activation rotational movement relative to the pass punches 21. This is accompanied by a rotational movement of the activation element 28 also relative to the base plate 30 of the guide plate 32 and the workpiece support 22. The activation rotational movement takes place about the tool axis of rotation 14, which consequently forms an activation axis of rotation. The activation rotational movement ends when the Auffahrschräge 40 is disposed under the to be activated punch.

In vergleichbarer Weise wird das Aktivierungselement 26 des Oberwerkzeuges 4 mit einer Aktivierungs-Drehbewegung um die Werkzeugdrehachse 14 relativ zu den Durchzugsmatrizen 20 gedreht, bis die Anfahrschräge 46 des Aktivierungselementes 26 über der zu aktivierenden Durchzugsmatrize angeordnet ist.In a comparable manner, the activation element 26 of the upper tool 4 is rotated with an activation rotational movement about the tool rotation axis 14 relative to the passage matrices 20 until the approach slope 46 of the activation element 26 is arranged above the passage matrix to be activated.

Die Aktivierungs-Drehbewegungen des Aktivierungselementes 28 werden mittels des maschinenseitigen Drehantriebes 13 realisiert. Zur Steuerung der Aktivierungs-Drehbewegung weist das Aktivierungselement 28 die Verzahnung 29 auf. Die maschinenseitige, in die Verzahnung 29 eingreifende, der Einfachheit halber als Ritzel dargestellte Indexier-Schalteinrichtung 16 lässt bei einer Drehung des Grundkörpers 27 des Unterwerkzeuges 5 um die Werkzeugdrehachse 14 entweder eine Drehung des Aktivierungselementes 28 simultan mit dem Grundkörper 27 zu (erster Schaltzustand) oder hindert das Aktivierungselement 28 an einer gemeinsamen Drehbewegung mit dem Grundkörper 27 (zweiter Schaltzustand). Wird das Aktivierungselement 28 an einer Drehbewegung mit dem Grundkörper 27 gehindert, so bewirkt eine Drehung des Grundkörpers 27 eine Relativbewegung des Grundkörpers 27 und der an dem Grundkörper 27 gelagerten Durchzugsstempel 21 gegenüber dem Aktivierungselement 28.The activation rotational movements of the activation element 28 are realized by means of the machine-side rotary drive 13. For controlling the activation rotary movement, the activation element 28 has the toothing 29. The machine side, engaging in the toothing 29, for simplicity illustrated as a pinion Indexier-switching device 16 can be at a rotation of the main body 27 of the lower tool 5 to the tool rotation axis 14 either a rotation of the activation element 28 simultaneously with the main body 27 to (first switching state) or prevents the activation element 28 at a common rotational movement with the main body 27 (second switching state). If the activation element 28 is prevented from rotating with the base body 27, rotation of the base body 27 causes a relative movement of the base body 27 and the passage punch 21 mounted on the base body 27 relative to the activation element 28.

Die gemeinschaftliche Drehung des Aktivierungselementes 28 und des Grundkörpers 27 bei dem ersten Schaltzustand der Indexier-Schalteinrichtung 16 dient einem Ausrichten der Durchzugsstempel 21 gegenüber dem zu bearbeitenden Blech 9 um die Werkzeugdrehachse 14. Ein unerwünschtes Verdrehen des Aktivierungselementes 28 gegenüber dem Grundkörper 27 wird dabei durch die Rastkugel 41 verhindert.The joint rotation of the activation element 28 and the base body 27 in the first switching state of the Indexier-switching device 16 is used to align the passage punch 21 relative to the sheet 9 to be machined to the tool axis of rotation 14. An undesirable rotation of the activation element 28 relative to the base body 27 is characterized by the Detent ball 41 prevents.

Die Steuerung der Aktivierungsdrehbewegung des Aktivierungselementes 26 an dem Oberwerkzeug 4 mittels der Indexier-Schalteinrichtung 15 erfolgt entsprechend der Steuerung der Aktivierungs-Drehbewegung des Aktivierungselementes 28 des Unterwerkzeuges 5.The control of the activation rotational movement of the activation element 26 on the upper tool 4 by means of the Indexier-switching device 15 is carried out according to the control of the activation rotational movement of the activation element 28 of the lower tool fifth

Im Interesse einer möglichst einfachen Wartung und Instandsetzung weist der Boden 39 des Aktivierungselementes 28 des Unterwerkzeuges 5 Aussparungen auf, durch welche nach Entfernen der Grundplatte 30 auszuwechselnde Durchzugsstempel 21 nach unten entnommen können. Der Austausch verschlissener oder zerstörter Durchzugsstempel 21 kann demzufolge in einfacher Weise nach Lösen der Verschraubung 31 erfolgen.In the interests of the simplest possible maintenance and repair, the bottom 39 of the activation element 28 of the lower tool has 5 recesses, through which can be removed after removal of the base plate 30 to be replaced pull-through punch 21 down. The replacement of worn or destroyed puncture punches 21 can therefore be carried out in a simple manner after loosening the screw 31.

Abgewandelte Bauarten des Werkzeuges 2 können anstelle von Umformstempeln und Umformmatrizen beispielsweise auch Stanzstempel und Stanzmatrizen aufweisen. Weiterhin können abweichend von dem dargestellten Werkzeug die Bearbeitungseinrichtungen und/oder die Gegeneinrichtungen mittels Federelementen in ihre Außerfunktionsstellung zurückgestellt werden.Modified designs of the tool 2 may, for example, instead of stamping dies and forming dies also have punches and punching dies. Furthermore, notwithstanding the illustrated tool, the processing devices and / or the counter-devices can be returned to their non-functional position by means of spring elements.

Claims (14)

  1. Tool for a machine tool for processing, especially cutting and/or forming, plate-like workpieces, especially metal sheets, having
    - a first tool portion (4) which is drivingly connectable to a stroke drive (3), and a second tool portion (5), wherein the first tool portion (4) and the second tool portion (5) can be associated with sides of a workpiece (9) to be processed which lie opposite each other along a stroke axis (8),
    - at least one processing device (20) on the first tool portion (4) and at least two counter-devices (21) on the second tool portion (5), wherein a processing device (20) of the first tool portion (4) is movable along the stroke axis (8) towards a counter-device (21) of the second tool portion (5) for the purpose of workpiece processing,
    - an activating device by means of which, by an activating rotational movement of a rotationally adjustable activating member (26, 28) about an activating rotational axis (14), different device pairings, having one processing device (20.1) and one counter-device (21.1) each, are activatable for workpiece processing,
    characterised in that
    the activating device is provided on the second tool portion (5) and in that, by the activating rotational movement of the rotationally adjustable activating member (28), the counter-device (21.1) that is part of the device pairing to be activated is transferable into an operating position in which, relative to a non-operating position which it can assume, the relevant counter-device (21.1) projects towards the workpiece (9) during workpiece processing.
  2. Tool according to claim 1, characterised in that at least two processing devices (20) and one activating device are provided on the first tool portion (4), wherein the processing device (20.1) that is part of the device pairing to be activated is transferable by the activating rotational movement of a rotationally adjustable activating member (26) into an operating position in which, relative to a non-operating position which it can assume, the relevant processing device (20.1) projects towards the workpiece (9) during workpiece processing.
  3. Tool according to either of the preceding claims, characterised in that the second tool portion (5) forms a workpiece support (22) on its side associated with the workpiece (9) to be processed.
  4. Tool according to any one of the preceding claims, characterised in that the workpiece support (22) provided on the second tool portion (5) forms a workpiece stripper during workpiece processing.
  5. Tool according to any one of the preceding claims, characterised in that at least one counter-device (21) is transferable into a non-operating position under the effect of gravity.
  6. Tool according to any one of the preceding claims, characterised in that at least one counter-device (21) is in the form of a male processing die, especially a male forming die.
  7. Tool according to any one of the preceding claims, characterised in that the counter-devices (21) and/or the processing devices (20) follow each other about the activating rotational axis (14) of the activating rotational movement of the activating member(s) (26, 28).
  8. Machine tool for processing, especially cutting and/or forming, plate-like workpieces, especially metal sheets, having
    - a tool (2) which comprises a first tool portion (4) having a stroke drive (3) and a second tool portion (5), wherein the first tool portion (4) and the second tool portion (5) are associated with sides of a workpiece (9) to be processed which lie opposite each other along a stroke axis (8),
    - at least one processing device (20) on the first tool portion (4) and at least two counter-devices (21) on the second tool portion (5), wherein a processing device (20) of the first tool portion (4) is movable by means of the stroke drive (3) along a stroke axis (8) defined by the stroke drive (3) towards a counter-device (21) of the second tool portion (5) for the purpose of workpiece processing,
    - a rotary drive (13) by means of which at least one rotationally adjustable activating member (26, 28) of an activating device is rotatable with an activating rotational movement about an activating rotational axis (14),
    wherein, by the activating rotational movement of the rotationally adjustable activating member (26, 28), different device pairings, having one processing device (20) and one counter-device (21) each, are activatable for workpiece processing,
    characterised in that
    the rotationally adjustable activating member (28) is provided for the second tool portion (5) and, by the activating rotational movement of the rotationally adjustable activating member (26), the counter-device (21.1) that is part of the device pairing to be activated is transferable into an operating position in which, relative to a non-operating position which it can assume, the relevant counter-device (21.1) projects towards the workpiece (9) during workpiece processing.
  9. Machine tool according to claim 8, characterised in that the tool portions (4, 5) are rotatable about a rotational axis of the tool by means of the rotary drive (13) and in that the rotational axis of the tool forms the activating rotational axis (14).
  10. Machine tool according to either claim 8 or claim 9, characterised in that there is provided for the second tool portion (5) an indexing-switching device (16) which is transferable into a first and a second switching state, wherein, in the first switching state, the counter-devices (21) and the rotationally adjustable activating member (28) are rotatable in common by means of the rotary drive (13) and, in the second switching state, the counter-devices (21) and the rotationally adjustable activating member (28) are rotatable relative to each other with an activating rotational movement by means of the rotary drive (13).
  11. Machine tool according to any one of claims 8 to 10, characterised in that at least two processing devices (20) and one activating device are provided on the first tool portion (4), wherein, by an activating rotational movement of a rotationally adjustable activating member (26), the processing device (20.1) that is part of the device pairing to be activated is transferable into an operating position in which, relative to a non-operating position which it can assume, the relevant processing device (20.1) projects towards the workpiece (9) during workpiece processing.
  12. Machine tool according to any one of claims 8 to 11, characterised in that there is provided for the first tool portion (4) an indexing-switching device (15), which is transferable into a first and a second switching state, wherein, in the first switching state, the processing devices (20) and the rotationally adjustable activating member (26) are rotatable in common by means of the rotary drive (13) and, in the second switching state, the processing devices (20) and the rotationally adjustable activating member (26) are rotatable relative to each other with an activating rotational movement by means of the rotary drive (13).
  13. Machine tool according to any one of claims 8 to 12, characterised in that a stroke drive (12) is provided for the second tool portion (5).
  14. Machine tool according to any one of claims 8 to 13, having a tool according to any one of claims 1 to 7.
EP20070818532 2006-10-18 2007-09-28 Tool and machine tool for working plate-like workpieces, in particular metal sheets Not-in-force EP2081707B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006049046A DE102006049046A1 (en) 2006-10-18 2006-10-18 Tool and machine tool for processing plate-like workpieces, in particular sheets
PCT/EP2007/008449 WO2008046501A1 (en) 2006-10-18 2007-09-28 Tool and machine tool for working plate-like workpieces, in particular metal sheets

Publications (2)

Publication Number Publication Date
EP2081707A1 EP2081707A1 (en) 2009-07-29
EP2081707B1 true EP2081707B1 (en) 2011-01-26

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EP20070818532 Not-in-force EP2081707B1 (en) 2006-10-18 2007-09-28 Tool and machine tool for working plate-like workpieces, in particular metal sheets

Country Status (7)

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US (1) US8201435B2 (en)
EP (1) EP2081707B1 (en)
JP (1) JP5185941B2 (en)
CN (1) CN101528377B (en)
AT (1) ATE496710T1 (en)
DE (2) DE102006049046A1 (en)
WO (1) WO2008046501A1 (en)

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WO2018055182A1 (en) * 2016-09-26 2018-03-29 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Tool, machine tool, and method for cutting and/or forming planar workpieces
EP3515618B1 (en) 2016-09-26 2020-07-01 Trumpf Werkzeugmaschinen GmbH + Co. KG Tool and machine tool and method for machining planar workpieces
DE102016118153B4 (en) * 2016-09-26 2018-10-04 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Tool and method at least for handling workpieces
WO2018055183A1 (en) * 2016-09-26 2018-03-29 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Tool, machine tool, and method for machining planar workpieces
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Also Published As

Publication number Publication date
WO2008046501A1 (en) 2008-04-24
ATE496710T1 (en) 2011-02-15
JP5185941B2 (en) 2013-04-17
DE102006049046A1 (en) 2008-04-24
US8201435B2 (en) 2012-06-19
US20090223273A1 (en) 2009-09-10
EP2081707A1 (en) 2009-07-29
JP2010506729A (en) 2010-03-04
CN101528377A (en) 2009-09-09
DE502007006390D1 (en) 2011-03-10
CN101528377B (en) 2012-12-05

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