EP1502673B1 - Machine tool with driving means for the tool - Google Patents

Machine tool with driving means for the tool Download PDF

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Publication number
EP1502673B1
EP1502673B1 EP20030017009 EP03017009A EP1502673B1 EP 1502673 B1 EP1502673 B1 EP 1502673B1 EP 20030017009 EP20030017009 EP 20030017009 EP 03017009 A EP03017009 A EP 03017009A EP 1502673 B1 EP1502673 B1 EP 1502673B1
Authority
EP
European Patent Office
Prior art keywords
spindle
tool
drive
machine tool
tool holder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP20030017009
Other languages
German (de)
French (fr)
Other versions
EP1502673A1 (en
Inventor
Christoph Schmidt
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.)
Filing date
Publication date
Priority to AT03017009T priority Critical patent/ATE324199T1/en
Application filed by Trumpf Werkzeugmaschinen SE and Co KG filed Critical Trumpf Werkzeugmaschinen SE and Co KG
Priority to EP20030017009 priority patent/EP1502673B1/en
Priority to DE50303112T priority patent/DE50303112D1/en
Priority to PCT/EP2004/006948 priority patent/WO2005016573A1/en
Priority to JP2006521410A priority patent/JP4681549B2/en
Publication of EP1502673A1 publication Critical patent/EP1502673A1/en
Priority to US11/341,861 priority patent/US8001877B2/en
Application granted granted Critical
Publication of EP1502673B1 publication Critical patent/EP1502673B1/en
Priority to US13/213,822 priority patent/US8413558B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/20—Applications of drives for reducing noise or wear
    • 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
    • Y10T29/49995—Shaping one-piece blank by removing material
    • 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
    • Y10T83/04—Processes
    • 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
    • Y10T83/8745—Tool and anvil relatively positionable
    • 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
    • Y10T83/8821—With simple rectilinear reciprocating motion only
    • Y10T83/8835—And means to move cooperating cutting member
    • 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
    • Y10T83/929—Tool or tool with support
    • Y10T83/9411—Cutting couple type
    • Y10T83/9423—Punching tool
    • 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
    • Y10T83/929—Tool or tool with support
    • Y10T83/9457—Joint or connection
    • Y10T83/9473—For rectilinearly reciprocating tool
    • Y10T83/9476—Tool is single element with continuous cutting edge [e.g., punch, etc.]

Definitions

  • the invention relates to a machine tool having at least one tool holder, on which a punching tool can be arranged and with a tool lifting drive, by means of which the tool holder is movable to the working area of the machine tool back and forth in a stroke direction, wherein the tool holder a to the working area of the machine tool has opening and permeable opening in the stroke direction.
  • Such a machine tool is disclosed in EP 0 417 836 B1.
  • the prior art relates to a punching machine with a raised and lowered die.
  • the lifting movement of the die is generated by means of a tool lifting drive, which in turn comprises a hydraulic piston-cylinder unit and a wedge gear.
  • the piston-cylinder unit is arranged horizontally and moves a first gear wedge of the wedge in the horizontal direction.
  • the first gear wedge is provided on its upwardly facing side with an inclined against the horizontal wedge surface.
  • a second gear wedge of the wedge gear is supported with a corresponding wedge surface.
  • the second gear wedge stored on its upper side a die holder and on this the raised or lowered die.
  • the horizontally directed drive movement of the piston-cylinder unit is converted into a vertical movement of the die.
  • the gear wedges of the wedge gear are provided with openings permeable in the vertical direction through which, for example, at the processing point resulting punching waste can leave the work area of the machine.
  • the present invention has set itself the goal.
  • a tool lifting drive is provided with a spindle drive, whose at least one spindle extends in the stroke direction.
  • transverse to the stroke direction and en pursueender design in the stroke direction of the tool lifting drive according to the invention is extremely compact.
  • a passage continuing in the stroke direction in the opening of the tool holder is released.
  • the accessibility of the working area of the machine tool or of the machining tool through the tool holder is consequently not impaired by the presence of the tool lifting drive.
  • the passage can serve, for example, in the tool holder integrated punching die to remove punching waste from the work area of the machine tool.
  • a laser cutting head can be attached to the tool holder as an alternative to a punching tool
  • the laser beam originating from the beam source can be supplied to it through the passage left free by the spindle drive and / or the rotary drive of the tool lifting drive.
  • the continuation in the stroke direction in the opening of the tool holder passage is formed by the inner recess of a hollow spindle of the spindle drive.
  • This invention type is characterized by a special compactness.
  • the spindle drive of machine tools may comprise a plurality of spindle-spindle nut units arranged around the passage continuing in the opening of the tool holder. It is also conceivable within the meaning of the invention to provide a spindle-spindle nut unit with a hollow spindle forming said passage and, moreover, to arrange at least one further spindle-spindle nut unit spaced from the passage.
  • the mentioned multi-spindle solutions are generally characterized by high dynamics. They make it possible to perform fast short strokes of the tool holder with high accelerations.
  • the use of a plurality of spindle-spindle nut units allows the transmission of particularly large forces.
  • these even in the strokes to be executed be used as rotation of the tool holder or provided with the tool holder housing. Elaborate measures to prevent rotation are unnecessary accordingly. This circumstance in turn contributes to a compact design of the overall arrangement.
  • Said drive ring gears with internal recess are provided in the interest of a compact design of the rotary drive and thus the entire tool Hubantriebes.
  • a particularly space-saving arrangement results when a drive ring gear drives one or more spindle spindle nut units without intermediate gear (claim 5). In this case, it only requires a clutch between the drive ring gear and the spindle or spindle nut units concerned.
  • Conceivable are elastic as well as rigid, switchable as well as non-switchable couplings.
  • a special compactness of the tool lifting drive is obtained when the drive ring gear is formed by the rotor of a motor serving as a drive motor for the tool lifting electric motor (claim 6).
  • a torque motor is used as the electric motor, can on the or the spindle drives high torques are transmitted without intermediate gear.
  • the drive ring gear surrounds the at least one spindle-spindle nut unit to be driven.
  • one and the same drive ring gear can be used to jointly drive a plurality of spindle-spindle nut units.
  • the compact tool-lifting drive according to the invention machine tools can be used in particular for driving punch punches and / or punching dies (claim 10).
  • strokes can be performed both strokes for punching workpiece machining and adjusting strokes for positioning of the punching tool in question.
  • the punch 5 opposite a punching die 7 is arranged at the free end of the lower frame leg 4. This, too, can be moved in the lifting direction 6 by means of a tool lifting drive, which will be explained in more detail below.
  • Both the punch 5 and the punching die 7 are rotationally adjustable in the direction of a double arrow 8 about an axis of rotation 6 extending in the stroke direction. Both the rotation adjustment and the lifting movement of the punch 5 and the punching die 7 are numerically controlled.
  • a collecting container 9 for punching waste is provided in the interior of the lower frame leg 4. Finished parts produced by means of the punch 5 and the punching die 7 are removed from the work area of the punching machine 1 via a flap 12 which is integrated into a work table 10 and can be pivoted in the direction of a double arrow 11.
  • a plate 13 which is positioned by a in the pharynx space between the upper frame leg 3 and the lower frame leg 4 accommodated coordinate guide 14 in a known manner with respect to the punch 5 and the punching die 7.
  • a tool lifting drive of the first type as a tool lifting drive 15 in detail in FIGS. 2 and 3 shown. It comprises a spindle drive 16 with a spindle-spindle nut unit 17 and a rotary drive 18 provided for this purpose.
  • Parts of the spindle-spindle nut unit 17 are a spindle 19 designed as a hollow spindle and a spindle nut 20.
  • the spindle 19 extends with an axis 21 in the spindle It is rotatably mounted on a housing 22 of the tool lifting drive 15 about the axis 21 and non-displaceably in the direction of the axis 21. In its interior, it has an open at both axial ends inner recess 23.
  • the rotary drive 18 for the spindle-spindle nut unit 17 is of electric motor type.
  • a torque motor 24 serves as a drive motor and is mounted with a stator 25 on the housing 22 of the tool lifting drive 15.
  • a rotor 26 of the torque motor 24 rotates about the axis 21 of the spindle 19 and is rigidly coupled to an outer flange of the spindle 19 with this.
  • a recognizable in Fig. 2 housing of the torque motor 24 is not shown in Fig. 3 for the sake of simplicity.
  • the spindle nut 20 of the spindle-spindle nut unit 17 is drive-connected to a tool holder 27 for the punching die 7.
  • a corresponding positive connection 28 between the spindle nut 20 and the tool holder 27 is in the direction of the axis 21 of the spindle 19 and thus in the stroke direction. 6 effective.
  • a entrainment of the tool holder 27 and the spindle nut 20 by the rotating around the axis 21 spindle 19 is prevented by a not shown in detail rotation of the tool holder 27.
  • a rotational adjustment movement of the tool holder 27 about the axis 21 of the spindle 19 can be carried out by means of a servomotor 29.
  • the servo motor 29 is used to set the punching die 7 in the direction of the double arrow 8 in FIG. 1. In the rotary adjustment of the tool holder 27 and the punching die 7, the rotation of the tool holder 27 is disabled.
  • the punching die 7 in the lifting direction 6 can be raised and lowered.
  • the punching die 7 is shown in its upper end position. This position takes the punching die 7 in the punching processing of the sheet 13 a. If, after the production of a punching, the sheet metal 13 is to be displaced by means of the coordinate guide 14 with respect to the punch 5 and the punching die 7, the punching die 7 is lowered by means of the tool lifting drive 15. In this way it is avoided that the sheet 13 is in its subsequent movement by means of the coordinate guide 14 on its underside with the punching die 7 in contact and consequently form scratches on the underside of the sheet 13.
  • a tool lifting drive of the second type for raising and lowering the punching die 7 is shown in FIGS. 4 and 5 in the form of a tool lifting drive 30.
  • This comprises a spindle drive 31 with a total of eight spindle spindle nut units 32 and one rotary drive 33.
  • Each of the spindle-spindle nut units 32 has a spindle 34 and a spindle nut 35 seated thereon.
  • Axes 36 of the spindles 34 extend in the stroke direction 6.
  • the spindles 34 are rotatable about their axes 36 and mounted immovably in the axial direction.
  • Each of the spindles 34 is provided with an externally toothed outer collar 38.
  • a torque motor 39 having a stator 40 and a rotor 41.
  • the latter runs around an axis extending in the lifting direction 6 and meshes with an internal toothing 42 with the external teeth of the outer collars 38 on the spindles 34th
  • the rotor 41 of the torque motor 39 forms a drive ring gear with internal recess.
  • An opening 45 in the interior of the tool holder 27 is aligned as shown in FIGS. 2 and 3 with the passage forming an inner recess 23 of the spindle 19 provided there, in the case of the ratios according to FIGS. 4 and 5 with a passage in the form of a free space 46, around which the spindle-spindle nut units 32 are arranged and which is enclosed by the torque motor 39.
  • the tool lifting drive 30 according to FIGS. 4 and 5 cause both a feed movement and a working stroke of the punching die 7.
  • a tool lifting drive 47 shown in FIG. 6 and a tool lifting drive 48 shown in FIG. 7 serve to move the punch 5 in the stroke direction 6.
  • the tool lifting drive 47 for the punch 5 corresponds to the tool lifting drive 15 for the punching die 7.
  • the tool lifting drive 48 for the punch 5 is substantially identical to the tool lifting drive 30 for the punching die 7.
  • the same reference numerals are used as for the corresponding components Tool lifting drives 15, 30.
  • the laser beam to be supplied can make its way through the inner recess 23 or the free space 46 and the opening 45 in the tool holder 27.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
  • Laser Beam Processing (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Press Drives And Press Lines (AREA)
  • Automatic Tool Replacement In Machine Tools (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The stamping matrix (7) may move up and down and is held on a hollow support member (27) with an adjustment motor (29). A torque motor (24) is positioned under the adjustment motor. It has a rotor (26) driving a hollow threaded spindle (19) driving a lifting nut (20) to move the stamping matrix. The system includes a form fitting for the support member.

Description

Die Erfindung betrifft eine Werkzeugmaschine mit wenigstens einer Werkzeughalterung, an welcher ein Stanzwerkzeug anordenbar ist sowie mit einem Werkzeug-Hubantrieb, mittels dessen die Werkzeughalterung zu dem Arbeitsbereich der Werkzeugmaschine hin und zurück in einer Hubrichtung bewegbar ist, wobei die Werkzeughalterung eine zu dem Arbeitsbereich der Werkzeugmaschine hin mündende und in Hubrichtung durchlässige Öffnung aufweist.The invention relates to a machine tool having at least one tool holder, on which a punching tool can be arranged and with a tool lifting drive, by means of which the tool holder is movable to the working area of the machine tool back and forth in a stroke direction, wherein the tool holder a to the working area of the machine tool has opening and permeable opening in the stroke direction.

Eine derartige Werkzeugmaschine ist offenbart in EP 0 417 836 B1. Der Stand der Technik betrifft eine Stanzmaschine mit einer heb- und senkbaren Matrize. Die Hubbewegung der Matrize wird mittels eines Werkzeug-Hubantriebes erzeugt, der seinerseits eine hydraulische Kolben-Zylinder-Einheit sowie ein Keilgetriebe umfasst. Die Kolben-Zylinder-Einheit ist liegend angeordnet und bewegt einen ersten Getriebekeil des Keilgetriebes in horizontaler Richtung. Der erste Getriebekeil ist an seiner nach oben weisenden Seite mit einer gegen die Horizontale geneigten Keilfläche versehen. An dieser Keilfläche des ersten Getriebekeils ist ein zweiter Getriebekeil des Keilgetriebes mit einer entsprechenden Keilfläche abgestützt. Der zweite Getriebekeil lagert an seiner Oberseite einen Matrizenhalter und über diesen die anzuhebende oder abzusenkende Matrize. Mittels des Keilgetriebes wird die horizontal gerichtete Antriebsbewegung der Kolben-Zylinder-Einheit in eine vertikale Bewegung der Matrize umgesetzt. Neben der Matrize sind auch der Matrizenhalter sowie die Getriebekeile des Keilgetriebes mit in vertikaler Richtung durchlässigen Öffnungen versehen, durch welche beispielsweise an der Bearbeitungsstelle entstehender Stanzabfall den Arbeitsbereich der Maschine verlassen kann.Such a machine tool is disclosed in EP 0 417 836 B1. The prior art relates to a punching machine with a raised and lowered die. The lifting movement of the die is generated by means of a tool lifting drive, which in turn comprises a hydraulic piston-cylinder unit and a wedge gear. The piston-cylinder unit is arranged horizontally and moves a first gear wedge of the wedge in the horizontal direction. The first gear wedge is provided on its upwardly facing side with an inclined against the horizontal wedge surface. At this wedge surface of the first gear wedge a second gear wedge of the wedge gear is supported with a corresponding wedge surface. The second gear wedge stored on its upper side a die holder and on this the raised or lowered die. By means of the wedge gear, the horizontally directed drive movement of the piston-cylinder unit is converted into a vertical movement of the die. In addition to the die and the die holder and the gear wedges of the wedge gear are provided with openings permeable in the vertical direction through which, for example, at the processing point resulting punching waste can leave the work area of the machine.

Aufgrund der beschriebenen Konfiguration baut der Werkzeug-Hubantrieb der vorbekannten Stanzmaschine und somit auch die Stanzmaschine selbst verhältnismäßig groß.Due to the described configuration of the tool lifting drive of the prior art punching machine and thus also the punching machine itself builds relatively large.

Den Stand der Technik dahingehend weiterzubilden, dass sich eine kompakte Bauweise des Werkzeug-Hubantriebes und somit eine kompakte Bauweise der Gesamtmaschine ergibt, hat sich die vorliegende Erfindung zum Ziel gesetzt.To develop the state of the art to the effect that results in a compact design of the tool lifting drive and thus a compact design of the overall machine, the present invention has set itself the goal.

Erfindungsgemäß gelöst wird diese Aufgabe durch die Werkzeugmaschine nach Patentanspruch 1. Im Falle der Erfindung ist demnach ein Werkzeug-Hubantrieb mit einem Spindeltrieb vorgesehen, dessen wenigstens eine Spindel in Hubrichtung verläuft. Jedenfalls quer zu der Hubrichtung und bei ensprechender Gestaltung auch in Hubrichtung baut der erfindungsgemäße Werkzeug-Hubantrieb ausgesprochen kompakt. Gleichzeitig wird ein sich in Hubrichtung in der Öffnung der Werkzeughalterung fortsetzender Durchlass freigelassen. Die Zugänglichkeit des Arbeitsbereiches der Werkzeugmaschine bzw. des Bearbeitungswerkzeuges durch die Werkzeughalterung hindurch wird folglich durch das Vorhandensein des Werkzeug-Hubantriebes nicht beeinträchtigt. Der Durchlass kann beispielsweise bei in der Werkzeughalterung eingebauter Stanzmatrize dazu dienen, Stanzabfall aus dem Arbeitsbereich der Werkzeugmaschine abzuführen. Lässt sich an der Werkzeughalterung alternativ zu einem Stanzwerkzeug etwa ein Laserschneidkopf anbringen, so kann diesem der von der Strahlquelle stammende Laserstrahl durch den von dem Spindeltrieb und/oder dem Drehantrieb des Werkzeug-Hubantriebes freigelassenen Durchlass hindurch zugeleitet werden.According to the invention this object is achieved by the machine tool according to claim 1. In the case of the invention, therefore, a tool lifting drive is provided with a spindle drive, whose at least one spindle extends in the stroke direction. In any case, transverse to the stroke direction and ensprechender design in the stroke direction of the tool lifting drive according to the invention is extremely compact. At the same time, a passage continuing in the stroke direction in the opening of the tool holder is released. The accessibility of the working area of the machine tool or of the machining tool through the tool holder is consequently not impaired by the presence of the tool lifting drive. The passage can serve, for example, in the tool holder integrated punching die to remove punching waste from the work area of the machine tool. If, for example, a laser cutting head can be attached to the tool holder as an alternative to a punching tool, then the laser beam originating from the beam source can be supplied to it through the passage left free by the spindle drive and / or the rotary drive of the tool lifting drive.

Besondere Ausführungsarten der in Patentanspruch 1 beschriebenen Erfindung ergeben sich aus den abhängigen Patentansprüchen 1 bis 10.Particular embodiments of the invention described in claim 1 result from the dependent claims 1 to 10.

Gemäß Patentanspruch 2 wird der sich in Hubrichtung in der Öffnung der Werkzeughalterung fortsetzende Durchlass von der Innenaussparung einer Hohlspindel des Spindeltriebes ausgebildet. Diese Erfindungsbauart zeichnet sich durch eine besondere Kompaktheit aus.According to claim 2, the continuation in the stroke direction in the opening of the tool holder passage is formed by the inner recess of a hollow spindle of the spindle drive. This invention type is characterized by a special compactness.

Ausweislich Patentanspruch 3 kann der Spindeltrieb erfindungsgemäßer Werkzeugmaschinen mehrere Spindel-Spindelmutter-Einheiten umfassen, die um den sich in der Öffnung der Werkzeughalterung fortsetzenden Durchlass herum angeordnet sind. Auch ist es im Sinne der Erfindung denkbar, eine Spindel-Spindelmutter-Einheit mit einer den genannten Durchlass ausbildenden Hohlspindel vorzusehen und darüber hinaus wenigstens eine weitere Spindel-Spindelmutter-Einheit von dem Durchlass beabstandet anzuordnen.As shown in claim 3, the spindle drive of machine tools according to the invention may comprise a plurality of spindle-spindle nut units arranged around the passage continuing in the opening of the tool holder. It is also conceivable within the meaning of the invention to provide a spindle-spindle nut unit with a hollow spindle forming said passage and, moreover, to arrange at least one further spindle-spindle nut unit spaced from the passage.

Die genannten Mehrspindellösungen zeichnen sich generell durch eine hohe Dynamik aus. Sie gestatten es, schnelle kurze Hübe der Werkzeughalterung mit hohen Beschleunigungen auszuführen. Darüber hinaus erlaubt die Verwendung einer Mehrzahl von Spindel-Spindelmutter-Einheiten die Übertragung besonders großer Kräfte. Schließlich können bei Einsatz mehrerer Spindel-Spindelmutter-Einheiten diese selbst bei den auszuführenden Hüben als Verdrehsicherung der Werkzeughalterung bzw. eines mit der Werkzeughalterung versehenen Gehäuses genutzt werden. Aufwändige Maßnahmen zur Verdrehsicherung erübrigen sich dementsprechend. Dieser Umstand wiederum trägt zu einer kompakten Bauweise der Gesamtanordnung bei.The mentioned multi-spindle solutions are generally characterized by high dynamics. They make it possible to perform fast short strokes of the tool holder with high accelerations. In addition, the use of a plurality of spindle-spindle nut units allows the transmission of particularly large forces. Finally, when using multiple spindle-spindle nut units, these even in the strokes to be executed be used as rotation of the tool holder or provided with the tool holder housing. Elaborate measures to prevent rotation are unnecessary accordingly. This circumstance in turn contributes to a compact design of the overall arrangement.

Für erfindungsgemäße Werkzeugmaschinen bevorzugte Möglichkeiten zur Konfiguration des Drehantriebes des Werkzeug-Hubantriebes sind in den Patentansprüchen 4 bis 9 beschrieben.For machine tools according to the invention preferred ways of configuring the rotary drive of the tool lifting drive are described in the claims 4 to 9.

Die genannten Antriebs-Hohlräder mit Innenaussparung sind im Interesse einer kompakten Bauweise des Drehantriebes und somit des gesamten werkzeug-Hubantriebes vorgesehen. Eine besonders platzsparende Anordnung ergibt sich, wenn ein Antriebs-Hohlrad eine oder mehrere Spindel-Spindelmutter-Einheiten ohne Zwischengetriebe antreibt (Patentanspruch 5). In diesem Fall bedarf es zwischen dem Antriebs-Hohlrad und der oder den betreffenden Spindel-Spindelmutter-Einheiten lediglich einer Kupplung. Denkbar sind elastische ebenso wie starre, schaltbare ebenso wie nicht schaltbare Kupplungen.Said drive ring gears with internal recess are provided in the interest of a compact design of the rotary drive and thus the entire tool Hubantriebes. A particularly space-saving arrangement results when a drive ring gear drives one or more spindle spindle nut units without intermediate gear (claim 5). In this case, it only requires a clutch between the drive ring gear and the spindle or spindle nut units concerned. Conceivable are elastic as well as rigid, switchable as well as non-switchable couplings.

Eine besondere Kompaktheit des Werkzeug-Hubantriebes ergibt sich, wenn das Antriebs-Hohlrad von dem Rotor eines als Antriebsmotor für den Werkzeug-Hubantrieb dienenden Elektromotors ausgebildet ist (Patentanspruch 6). Insbesondere wenn als Elektromotor ein Torque-Motor zum Einsatz kommt, können auf den oder die Spindeltriebe hohe Drehmomente ohne Zwischengetriebe übertragen werden.A special compactness of the tool lifting drive is obtained when the drive ring gear is formed by the rotor of a motor serving as a drive motor for the tool lifting electric motor (claim 6). In particular, when a torque motor is used as the electric motor, can on the or the spindle drives high torques are transmitted without intermediate gear.

Ausweislich Patentanspruch 7 umgreift das Antriebs-Hohlrad die wenigstens eine anzutreibende Spindel-Spindelmutter-Einheit.As shown in claim 7, the drive ring gear surrounds the at least one spindle-spindle nut unit to be driven.

Gemäß den Patentansprüchen 8 und 9 kann ein und dasselbe Antriebs-Hohlrad zum gemeinschaftlichen Antrieb einer Mehrzahl von Spindel-Spindelmutter-Einheiten dienen.According to claims 8 and 9, one and the same drive ring gear can be used to jointly drive a plurality of spindle-spindle nut units.

Der kompakte Werkzeug-Hubantrieb erfindungsgemäßer Werkzeugmaschinen lässt sich insbesondere zum Antrieb von Stanzstempeln und/oder von Stanzmatrizen einsetzen (Patentanspruch 10). Als Hübe können dabei sowohl Arbeitshübe zur stanzenden Werkstückbearbeitung als auch Stellhübe zur Positionierung des betreffenden Stanzwerkzeuges ausgeführt werden.The compact tool-lifting drive according to the invention machine tools can be used in particular for driving punch punches and / or punching dies (claim 10). As strokes can be performed both strokes for punching workpiece machining and adjusting strokes for positioning of the punching tool in question.

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

Fig. 1
eine Stanzmaschine mit Stanzmatrize und Stanzstempel in stark schematisierter, teilgeschnittener Gesamtdarstellung,
Fig. 2
einen Längsschnitt eines Hubantriebes erster Bauart für die Stanzmatrize nach Fig. 1,
Fig. 3
einen Querschnitt des Hubantriebes nach Fig. 2 mit einer in Fig. 2 senkrecht zu der Zeichenebene und in Richtung der Linie III-III verlaufenden Schnittebene,
Fig. 4
einen Längsschnitt eines Hubantriebes zweiter Bauart für die Stanzmatrize nach Fig. 1,
Fig. 5
einen Querschnitt des Hubantriebes nach Fig. 4 mit einer in Fig. 4 senkrecht zu der Zeichenebene und in Richtung der Linie V-V verlaufenden Schnittebene,
Fig. 6
einen Längsschnitt eines Hubantriebes erster Bauart für den Stanzstempel nach Fig. 1 und
Fig. 7
einen Längsschnitt eines Hubantriebes zweiter Bauart für den Stanzstempel nach Fig. 1.
Gemäß Fig. 1 besitzt eine Stanzmaschine 1 ein C-förmiges Maschinengestell 2 mit einem oberen Gestellschenkel 3 und einem unteren Gestellschenkel 4. An dem freien Ende des oberen Gestellschenkels 3 ist ein Stanzstempel 5 in einer durch einen Doppelpfeil veranschaulichten Hubrichtung 6 heb- und senkbar. Bewirkt wird die Hubbewegung des Stanzstempels 5 mittels eines nachstehend im Einzelnen beschriebenen Werkzeug-Hubantriebes.The invention will be explained in more detail with reference to schematic representations of exemplary embodiments. Show it:
Fig. 1
a punching machine with punching die and punch in a highly schematized, partially cut overall view,
Fig. 2
1 a longitudinal section of a lifting drive of the first design for the punching die according to FIG. 1,
Fig. 3
2 with a in Fig. 2 perpendicular to the plane of the drawing and in the direction of the line III-III extending cutting plane,
Fig. 4
1 a longitudinal section of a lifting drive of the second type for the punching die according to FIG. 1,
Fig. 5
4 with a sectional plane running perpendicular to the plane of the drawing and in the direction of the line VV in FIG. 4, FIG.
Fig. 6
a longitudinal section of a lifting drive of the first type for the punch of FIG. 1 and
Fig. 7
a longitudinal section of a lifting drive of the second type for the punch of FIG .. 1
According to FIG. 1, a punching machine 1 has a C-shaped machine frame 2 with an upper frame leg 3 and a lower frame leg 4. At the free end of the upper frame leg 3, a punch 5 can be raised and lowered in a stroke direction 6 illustrated by a double arrow. The lifting movement of the punch 5 is effected by means of a tool lifting drive described in detail below.

Dem Stanzstempel 5 gegenüberliegend ist an dem freien Ende des unteren Gestellschenkels 4 eine Stanzmatrize 7 angeordnet. Auch diese ist mittels eines im Folgenden noch näher erläuterten Werkzeug-Hubantriebes in der.Hubrichtung 6 bewegbar. Sowohl der Stanzstempel 5 als auch die Stanzmatrize 7 sind um eine in der Hubrichtung 6 verlaufende Drehachse in Richtung eines Doppelpfeils 8 dreheinstellbar. Sowohl die Dreheinstellung als auch die Hubbewegung des Stanzstempels 5 und der Stanzmatrize 7 erfolgen numerisch gesteuert.The punch 5 opposite a punching die 7 is arranged at the free end of the lower frame leg 4. This, too, can be moved in the lifting direction 6 by means of a tool lifting drive, which will be explained in more detail below. Both the punch 5 and the punching die 7 are rotationally adjustable in the direction of a double arrow 8 about an axis of rotation 6 extending in the stroke direction. Both the rotation adjustment and the lifting movement of the punch 5 and the punching die 7 are numerically controlled.

Unterhalb der Stanzmatrize 7 ist im Innern des unteren Gestellschenkels 4 ein Sammelbehälter 9 für Stanzabfall vorgesehen. Mittels des Stanzstempels 5 und der Stanzmatrize 7 erstellte Fertigteile werden über eine in einen Werkstücktisch 10 integrierte und in Richtung eines Doppelpfeils 11 hin und her schwenkbare Klappe 12 aus dem Arbeitsbereich der Stanzmaschine 1 abgeführt.Below the punching die 7, a collecting container 9 for punching waste is provided in the interior of the lower frame leg 4. Finished parts produced by means of the punch 5 and the punching die 7 are removed from the work area of the punching machine 1 via a flap 12 which is integrated into a work table 10 and can be pivoted in the direction of a double arrow 11.

Mit der Stanzmaschine 1 zu bearbeiten ist in dem gezeigten Beispielsfall ein Blech 13, das durch eine in dem Rachenraum zwischen dem oberen Gestellschenkel 3 und dem unteren Gestellschenkel 4 untergebrachte Koordinatenführung 14 in bekannter Weise gegenüber dem Stanzstempel 5 und der Stanzmatrize 7 positioniert wird.To be processed with the punching machine 1 in the example shown, a plate 13 which is positioned by a in the pharynx space between the upper frame leg 3 and the lower frame leg 4 accommodated coordinate guide 14 in a known manner with respect to the punch 5 and the punching die 7.

Ein Werkzeug-Hubantrieb erster Bauart, ist als Werkzeug-Hubantrieb 15 im Detail in den Fign. 2 und 3 dargestellt. Er umfasst einen Spindeltrieb 16 mit einer Spindel-Spindelmutter-Einheit 17 sowie einem hierfür vorgesehenen Drehantrieb 18. Teile der Spindel-Spindelmutter-Einheit 17 sind eine als Hohlspindel ausgebildete Spindel 19 sowie eine Spindelmutter 20. Die Spindel 19 verläuft mit einer Achse 21 in der Hubrichtung 6. Sie ist an einem Gehäuse 22 des Werkzeug-Hubantriebes 15 um die Achse 21 drehbar und in Richtung der Achse 21 unverschiebbar gelagert. In ihrem Innern weist sie eine an beiden axialen Enden offene Innenaussparung 23 auf.A tool lifting drive of the first type, as a tool lifting drive 15 in detail in FIGS. 2 and 3 shown. It comprises a spindle drive 16 with a spindle-spindle nut unit 17 and a rotary drive 18 provided for this purpose. Parts of the spindle-spindle nut unit 17 are a spindle 19 designed as a hollow spindle and a spindle nut 20. The spindle 19 extends with an axis 21 in the spindle It is rotatably mounted on a housing 22 of the tool lifting drive 15 about the axis 21 and non-displaceably in the direction of the axis 21. In its interior, it has an open at both axial ends inner recess 23.

Der Drehantrieb 18 für die Spindel-Spindelmutter-Einheit 17 ist elektromotorischer Bauart. Ein Torque-Motor 24 dient als Antriebsmotor und ist mit einem Stator 25 an dem Gehäuse 22 des Werkzeug-Hubantriebes 15 gelagert. Ein Rotor 26 des Torque-Motors 24 läuft um die Achse 21 der Spindel 19 um und ist an einem Außenflansch der Spindel 19 mit dieser starr gekuppelt. Ein in Fig. 2 erkennbares Gehäuse des Torque-Motors 24 ist in Fig. 3 der Einfachheit halber nicht dargestellt.The rotary drive 18 for the spindle-spindle nut unit 17 is of electric motor type. A torque motor 24 serves as a drive motor and is mounted with a stator 25 on the housing 22 of the tool lifting drive 15. A rotor 26 of the torque motor 24 rotates about the axis 21 of the spindle 19 and is rigidly coupled to an outer flange of the spindle 19 with this. A recognizable in Fig. 2 housing of the torque motor 24 is not shown in Fig. 3 for the sake of simplicity.

Die Spindelmutter 20 der Spindel-Spindelmutter-Einheit 17 ist mit einer Werkzeughalterung 27 für die Stanzmatrize 7 antriebsverbunden. Eine entsprechende Formschlussverbindung 28 zwischen der Spindelmutter 20 und der Werkzeughalterung 27 ist in Richtung der Achse 21 der Spindel 19 und somit in der Hubrichtung 6 wirksam. Eine Mitnahme der werkzeughalterung 27 sowie der Spindelmutter 20 durch die um die Achse 21 umlaufende Spindel 19 wird durch eine nicht im Einzelnen gezeigte Drehsicherung der Werkzeughalterung 27 verhindert. Eine Dreh-Einstellbewegung der Werkzeughalterung 27 um die Achse 21 der Spindel 19 kann jedoch mittels eines Stellmotors 29 ausgeführt werden. Der Stellmotor 29 dient zur Einstellung der Stanzmatrize 7 in Richtung des Doppelpfeils 8 in Fig. 1. Bei der Dreheinstellung der Werkzeughalterung 27 bzw. der Stanzmatrize 7 ist die Drehsicherung der Werkzeughalterung 27 außer Funktion gesetzt.The spindle nut 20 of the spindle-spindle nut unit 17 is drive-connected to a tool holder 27 for the punching die 7. A corresponding positive connection 28 between the spindle nut 20 and the tool holder 27 is in the direction of the axis 21 of the spindle 19 and thus in the stroke direction. 6 effective. A entrainment of the tool holder 27 and the spindle nut 20 by the rotating around the axis 21 spindle 19 is prevented by a not shown in detail rotation of the tool holder 27. However, a rotational adjustment movement of the tool holder 27 about the axis 21 of the spindle 19 can be carried out by means of a servomotor 29. The servo motor 29 is used to set the punching die 7 in the direction of the double arrow 8 in FIG. 1. In the rotary adjustment of the tool holder 27 and the punching die 7, the rotation of the tool holder 27 is disabled.

Mittels des Werkzeug-Hubantriebes 15 ist die Stanzmatrize 7 in der Hubrichtung 6 heb- und senkbar. In Fig. 2 ist die Stanzmatrize 7 in ihrer oberen Endstellung gezeigt. Diese Stellung nimmt die Stanzmatrize 7 bei der stanzenden Bearbeitung des Bleches 13 ein. Ist nach der Erstellung einer Stanzung das Blech 13 mittels der Koordinatenführung 14 gegenüber dem Stanzstempel 5 und der Stanzmatrize 7 zu verschieben, so wird die Stanzmatrize 7 mittels des Werkzeug-Hubantriebes 15 abgesenkt. Auf diese Art und Weise wird vermieden, dass das Blech 13 bei seiner anschließenden Bewegung mittels der Koordinatenführung 14 an seiner Unterseite mit der Stanzmatrize 7 in Kontakt ist und sich infolgedessen Kratzer an der Unterseite des Bleches 13 bilden. Denkbar ist darüber hinaus die Verwendung des Werkzeug-Hubantriebes 15 zur Ausführung der für die stanzende Bearbeitung des Bleches 13 erforderlichen Arbeitshübe. In diesem Fall wird die Relativbewegung zwischen Stanzstempel 5 und Stanzmatrize 7 bei in der Hubrichtung 6 ortsfestem Stanzstempel 5 durch Hubbewegung der Stanzmatrize 7 erzeugt.By means of the tool lifting drive 15, the punching die 7 in the lifting direction 6 can be raised and lowered. In Fig. 2, the punching die 7 is shown in its upper end position. This position takes the punching die 7 in the punching processing of the sheet 13 a. If, after the production of a punching, the sheet metal 13 is to be displaced by means of the coordinate guide 14 with respect to the punch 5 and the punching die 7, the punching die 7 is lowered by means of the tool lifting drive 15. In this way it is avoided that the sheet 13 is in its subsequent movement by means of the coordinate guide 14 on its underside with the punching die 7 in contact and consequently form scratches on the underside of the sheet 13. It is conceivable beyond the use of the tool lifting drive 15 for carrying out the necessary for the punching processing of the sheet 13 strokes. In this case the relative movement between punch 5 and punching die 7 is generated in the stroke direction 6 stationary punch 5 by lifting movement of the punching die 7.

Einen werkzeug-Hubantrieb zweiter Bauart zum Anheben und Absenken der Stanzmatrize 7 zeigen die Figuren 4 und 5 in Form eines werkzeug-Hubantriebes 30. Dieser umfasst einen Spindeltrieb 31 mit insgesamt acht Spindel-Spindelmutter-Einheiten 32 und einem Drehantrieb 33.A tool lifting drive of the second type for raising and lowering the punching die 7 is shown in FIGS. 4 and 5 in the form of a tool lifting drive 30. This comprises a spindle drive 31 with a total of eight spindle spindle nut units 32 and one rotary drive 33.

Jede der Spindel-Spindelmutter-Einheiten 32 weist eine Spindel 34 sowie eine darauf aufsitzende Spindelmutter 35 auf. Achsen 36 der Spindeln 34 verlaufen in der Hubrichtung 6. An einem Gehäuse 37 des Werkzeug-Hubantriebes 30 sind die Spindeln 34 um ihre Achsen 36 drehbar und in Achsrichtung unverschiebbar gelagert. Jede der Spindeln 34 ist mit einem außenverzahnten Außenbund 38 versehen.Each of the spindle-spindle nut units 32 has a spindle 34 and a spindle nut 35 seated thereon. Axes 36 of the spindles 34 extend in the stroke direction 6. On a housing 37 of the tool lifting drive 30, the spindles 34 are rotatable about their axes 36 and mounted immovably in the axial direction. Each of the spindles 34 is provided with an externally toothed outer collar 38.

Zum gemeinschaftlichen Drehen der Spindeln 34 dient ein Torque-Motor 39 mit einem Stator 40 und einem Rotor 41. Letzterer läuft um eine sich in der Hubrichtung 6 erstreckende Achse um und kämmt an einer Innenverzahnung 42 mit den Außenverzahnungen der Außenbunde 38 an den Spindeln 34. Ebenso wie der Rotor 26 des Torque-Motors 24 nach den Fign. 2 und 3 bildet auch der Rotor 41 des Torque-Motors 39 ein Antriebs-Hohlrad mit Innenaussparung.For co-rotating the spindles 34 is a torque motor 39 having a stator 40 and a rotor 41. The latter runs around an axis extending in the lifting direction 6 and meshes with an internal toothing 42 with the external teeth of the outer collars 38 on the spindles 34th As well as the rotor 26 of the torque motor 24 according to FIGS. 2 and 3, the rotor 41 of the torque motor 39 forms a drive ring gear with internal recess.

Über eine Formschlussverbindung 43 sind die Spindelmuttern 35 der Spindel-Spindelmutter-Einheiten 32 in der Hubrichtung 6 wirksam mit der Werkzeughalterung 27 für die.Stanzmatrize 7 verbunden. Durch einen Stellmotor 44 ist die mittels des Werkzeug-Hubantriebs 30 heb- und senkbare Werkzeughalterung 27 in Richtung des Doppelpfeils 8 in Fig. 1 dreheinstellbar.Via a positive connection 43, the spindle nuts 35 of the spindle-spindle nut units 32 in the stroke direction 6 are effectively connected to the tool holder 27 for die.Stanzmatrize 7. By a servomotor 44 can be raised and lowered by means of the tool lifting drive 30 tool holder 27 in the direction of the double arrow 8 in Fig. 1 drehanfang.

Eine Öffnung 45 im Innern der Werkzeughalterung 27 fluchtet gemäß den Fign. 2 und 3 mit der einen Durchlass ausbildenden Innenaussparung 23 der dort vorgesehenen Spindel 19, im Falle der Verhältnisse nach den Fign. 4 und 5 mit einem Durchlass in Form eines Freiraums 46, um den herum die Spindel-Spindelmutter-Einheiten 32 angeordnet sind und der von dem Torque-Motor 39 umschlossen wird. Durch die Öffnung 45 der Werkzeughalterung 27 und die Innenaussparung 23 der Spindel 19 bzw. den Freiraum 46 zwischen den Spindel-Spindelmutter-Einheiten 32 kann bei der Bearbeitung des Blechs 13 erzeugter Stanzabfall unter Schwerkraftwirkung den Arbeitsbereich der Stanzmaschine 1 verlassen.An opening 45 in the interior of the tool holder 27 is aligned as shown in FIGS. 2 and 3 with the passage forming an inner recess 23 of the spindle 19 provided there, in the case of the ratios according to FIGS. 4 and 5 with a passage in the form of a free space 46, around which the spindle-spindle nut units 32 are arranged and which is enclosed by the torque motor 39. Through the opening 45 of the tool holder 27 and the inner recess 23 of the spindle 19 and the space 46 between the spindle-spindle nut units 32 produced during processing of the sheet 13 punching waste under gravity the work area of the punching machine 1 leave.

Ebenso wie der Werkzeug-Hubantrieb 15 gemäß den Fign. 2 und 3 kann auch der Werkzeug-Hubantrieb 30 nach den Fign. 4 und 5 sowohl eine Zustellbewegung als auch einen Arbeitshub der Stanzmatrize 7 bewirken.As well as the tool lifting drive 15 according to FIGS. 2 and 3, the tool lifting drive 30 according to FIGS. 4 and 5 cause both a feed movement and a working stroke of the punching die 7.

Ein in Fig. 6 dargestellter Werkzeug-Hubantrieb 47 sowie ein in Fig. 7 gezeigter Werkzeug-Hubantrieb 48 dienen zur Bewegung des Stanzstempels 5 in der Hubrichtung 6. In seinem konstruktiven Aufbau entspricht der Werkzeug-Hubantrieb 47 für den Stanzstempel 5 dem Werkzeug-Hubantrieb 15 für die Stanzmatrize 7. Der Werkzeug-Hubantrieb 48 für den Stanzstempel 5 ist im Wesentlichen baugleich mit dem Werkzeug-Hubantrieb 30 für die Stanzmatrize 7. Für die Bauteile der Werkzeug-Hubantriebe 47, 48 werden dieselben Bezugszeichen verwendet wie für die entsprechenden Bauteile der Werkzeug-Hubantriebe 15, 30.A tool lifting drive 47 shown in FIG. 6 and a tool lifting drive 48 shown in FIG. 7 serve to move the punch 5 in the stroke direction 6. In its construction, the tool lifting drive 47 for the punch 5 corresponds to the tool lifting drive 15 for the punching die 7. The tool lifting drive 48 for the punch 5 is substantially identical to the tool lifting drive 30 for the punching die 7. For the components of the tool lifting drives 47, 48, the same reference numerals are used as for the corresponding components Tool lifting drives 15, 30.

Wird an den Werkzeughalterungen 27 der Figuren 6 und 7 anstelle des gezeigten Stanzstempels 5 ein Laserschneidkopf angebracht, so kann der diesem zuzuführende Laserstrahl seinen Weg durch die Innenaussparung 23 bzw. den Freiraum 46 und die Öffnung 45 in der Werkzeughalterung 27 nehmen.If a laser cutting head is attached to the tool holders 27 of FIGS. 6 and 7 instead of the punch 5 shown, then the laser beam to be supplied can make its way through the inner recess 23 or the free space 46 and the opening 45 in the tool holder 27.

Claims (10)

  1. Machine tool with at least one tool holder (27) on which can be arranged a punch tool, and with a tool stroke drive (15, 30, 47, 48) by means of which the tool holder (27) can be moved in a stroke direction (6) to and from the working area of the machine tool, the tool holder (27) having an orifice (45) opening towards the working area of the machine tool and passable in the stroke direction (6), characterised in that the tool stroke drive (15, 30, 47, 48) comprises a spindle gear (16, 31) and a rotary drive (18, 33) for this, the spindle gear (16, 31) having at least one spindle-spindle nut unit (17, 32) with a spindle (19, 34) running with its axis (21, 36) in the stroke direction (6) and a spindle nut (20, 35) sitting thereon, and the spindle (19, 34) and spindle nut (20, 35) of the spindle-spindle nut unit (17, 32) are rotatable relative to each other about the axis (21, 36) of the spindle (19, 34) by means of the rotary drive (18, 33) and hence, with the tool holder (27) driven in the direction of the axis (21, 36) of the spindle (19, 34), are mobile relative to each other in this direction, the spindle gear (16, 31) and/or the rotary drive (18, 33) leaving clear a passage continuing into the orifice (45) of the tool holder (27) in the stroke direction (6).
  2. Machine tool according to claim 1, characterised in that the spindle gear (16) has a spindle-spindle nut unit (17) with a spindle (19) which is formed as a hollow spindle with an inner recess (23), wherein the inner recess (23) of the hollow spindle forms a passage continuing into the orifice (45) of the tool holder (27) in the stroke direction (6).
  3. Machine tool according to one of the preceding claims, characterised in that the spindle gear (31) has a multiplicity of spindle-spindle nut units (32) and that these spindle-spindle nut units (32), leaving clear a passage continuing into the orifice (45) of the tool holder (27) in the stroke direction (6), are arranged about this passage.
  4. Machine tool according to any of the preceding claims, characterised in that the rotary drive (18, 33) has at least one drive ring gear with an inner recess, wherein the drive ring gear runs with its axis in the stroke direction (6) and drives at least one spindle-spindle nut unit (17, 32) and wherein the inner recess of the drive ring gear leaves clear a passage continuing into the orifice (45) of the tool holder (27) in the stroke direction.
  5. Machine tool according to any of the preceding claims, characterised in that the drive ring gear is drive-connected with the spindle (19, 34) or the spindle nut of at least one spindle-spindle nut unit (17, 32) without intermediate gear.
  6. Machine tool according to any of the preceding claims, characterised in that the drive ring gear is formed by a rotor (26, 41) of an electric motor, preferably by the rotor (26, 41) of a torque motor (24, 39).
  7. Machine tool according to any of the preceding claims, characterised in that the drive ring gear surrounds the at least one spindle-spindle nut unit (17, 32) to be driven.
  8. Machine tool according to any of the preceding claims, characterised in that the drive ring gear surrounds a multiplicity of spindle-spindle nut units (17, 32) and drives these in common via its inner wall.
  9. Machine tool according to any of the preceding claims, characterised in that the drive ring gear is arranged as a sun wheel inside a multiplicity of spindle-spindle nut units (17, 32) and drives these in common via its outer wall.
  10. Machine tool according to any of the preceding claims, characterised in that on a tool holder (27) as a punch tool can be arranged a punch (5) and/or that on a tool holder (27) as a punch tool can be arranged a die (7).
EP20030017009 2003-07-26 2003-07-26 Machine tool with driving means for the tool Expired - Lifetime EP1502673B1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP20030017009 EP1502673B1 (en) 2003-07-26 2003-07-26 Machine tool with driving means for the tool
DE50303112T DE50303112D1 (en) 2003-07-26 2003-07-26 Machine tool with tool lifting drive
AT03017009T ATE324199T1 (en) 2003-07-26 2003-07-26 MACHINE TOOL WITH TOOL LIFTING DRIVE
JP2006521410A JP4681549B2 (en) 2003-07-26 2004-06-26 Machine tool with tool stroke drive
PCT/EP2004/006948 WO2005016573A1 (en) 2003-07-26 2004-06-26 Machine tool with tool raising mechanism
US11/341,861 US8001877B2 (en) 2003-07-26 2006-01-26 Tool holding system
US13/213,822 US8413558B2 (en) 2003-07-26 2011-08-19 Tool holding system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20030017009 EP1502673B1 (en) 2003-07-26 2003-07-26 Machine tool with driving means for the tool

Publications (2)

Publication Number Publication Date
EP1502673A1 EP1502673A1 (en) 2005-02-02
EP1502673B1 true EP1502673B1 (en) 2006-04-26

Family

ID=33522281

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Application Number Title Priority Date Filing Date
EP20030017009 Expired - Lifetime EP1502673B1 (en) 2003-07-26 2003-07-26 Machine tool with driving means for the tool

Country Status (6)

Country Link
US (2) US8001877B2 (en)
EP (1) EP1502673B1 (en)
JP (1) JP4681549B2 (en)
AT (1) ATE324199T1 (en)
DE (1) DE50303112D1 (en)
WO (1) WO2005016573A1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014209393A1 (en) 2014-05-19 2015-11-19 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Method for machining a plate-like workpiece, in particular a metal sheet
DE102014209393B4 (en) * 2014-05-19 2016-02-04 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Method for machining a plate-like workpiece, in particular a metal sheet

Also Published As

Publication number Publication date
EP1502673A1 (en) 2005-02-02
US8001877B2 (en) 2011-08-23
ATE324199T1 (en) 2006-05-15
DE50303112D1 (en) 2006-06-01
US8413558B2 (en) 2013-04-09
US20060144831A1 (en) 2006-07-06
JP4681549B2 (en) 2011-05-11
US20120037605A1 (en) 2012-02-16
JP2007500078A (en) 2007-01-11
WO2005016573A1 (en) 2005-02-24

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