EP2092994B1 - Machine tool for cutting and/or forming plate-form workpieces - Google Patents

Machine tool for cutting and/or forming plate-form workpieces Download PDF

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Publication number
EP2092994B1
EP2092994B1 EP08003217A EP08003217A EP2092994B1 EP 2092994 B1 EP2092994 B1 EP 2092994B1 EP 08003217 A EP08003217 A EP 08003217A EP 08003217 A EP08003217 A EP 08003217A EP 2092994 B1 EP2092994 B1 EP 2092994B1
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EP
European Patent Office
Prior art keywords
tool
holder
die
punch
stroke
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.)
Active
Application number
EP08003217A
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German (de)
French (fr)
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EP2092994A1 (en
Inventor
Peter Bytow
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
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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
Application filed by Trumpf Werkzeugmaschinen SE and Co KG filed Critical Trumpf Werkzeugmaschinen SE and Co KG
Priority to AT08003217T priority Critical patent/ATE460238T1/en
Priority to DE502008000434T priority patent/DE502008000434D1/en
Priority to EP08003217A priority patent/EP2092994B1/en
Priority to JP2009036514A priority patent/JP5167165B2/en
Priority to US12/390,601 priority patent/US8201432B2/en
Publication of EP2092994A1 publication Critical patent/EP2092994A1/en
Application granted granted Critical
Publication of EP2092994B1 publication Critical patent/EP2092994B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/26—Perforating, i.e. punching holes in sheets or flat parts
    • B21D28/265—Perforating, i.e. punching holes in sheets or flat parts with relative movement of sheet and tools enabling the punching of holes in predetermined locations of the sheet, e.g. holes punching with template
    • 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
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/14—Particular arrangements for handling and holding in place complete dies

Definitions

  • Machine tools of the above type are preferably used in the flexible sheet metal processing in the form of stamping forming machines. These machines make it possible to perform different workpiece machining on one and the same machine tool. For example, sheet metal parts along its outer contour are cut free from the sheet metal composite and also transformations are made to the sheet metal parts.
  • TruPunch ® 5000 A generic machine tool forms the offered by Trumpf Deutschenmaschinen GmbH + Co. KG TruPunch ® 5000.
  • the TruPunch ® 5000 has Mono tool holders, that tool holders, in each of which a single tool which comprises a tool punch, and a tool die, is determined. Additional tools can be found in a tool magazine and can be loaded into the mono tool holders for workpiece machining as required.
  • the Monowerkzeugingn have a liftable by means of a hydraulic lifting drive and lowerable tool punch recording and a fixed tool die recording.
  • a workpiece table For storage of a sheet to be processed is a workpiece table.
  • Workpiece machining takes place by lowering the tool punch receptacle together with a tool punch fixed thereon onto the metal sheet supported on the workpiece table, and as a result the sheet is machined under the action of the tool punch on the one hand and the tool die on the other hand.
  • the tool punches and tool dies of the TruPunch ® 5000 punching machine have a mushroom-shaped design.
  • the tool punches and the tool dies each have a tool shank.
  • the processing facilities of the tools in the form of cutting edges or Umformadorn are provided on opposite the tool shanks radially enlarged tool heads.
  • the EP 0 417 836 B1 discloses a punching machine in which both a punch recording and a punching die recording along a lifting axis relative to a work table are deliverable to compensate for changes in the tool total heights along the lifting axis due to a required from time to time regrinding of the punching tools. Despite these feed movements to compensate for the minor, wear-related reduction of tool heights the punching tools for the out of the EP 0 417 836 B1 known punching machine - just as in the case of the generic punching machine TruPunch ® 5000 - subject to considerable restrictions due to the space available at the tool holders.
  • Object of the present invention is to develop a conventional machine tool such that the possibilities for the design of usable on the machine tool tools are extended.
  • a machine tool having the features of claim 1 by both different tool punches, which have along the lifting axis differently high tool heads, as well as different tool dies, which also along the stroke axis have different height tool heads, are provided for workpiece machining and both the tool punch receptacle matched to the tool head height of a set on the tool punch receptacle tool stamp and the tool die recording matched to the tool head height of a tool matrices set on the tool die by means of the tool drive along the stroke axis relative to the workpiece support are deliverable.
  • an advantage of the invention is that on the machine tool according to the invention tools can be used with tool heads, which compared to tool heads of tools for a conventional machine tool are designed to be higher and therefore have a larger space, but that thanks to the compensating feed movements of the tool holders at the same time the tools for a conventional machine tool can be used.
  • the compensation movements of the tool holders by means of the tool drive are driven by a machine and thus automatically.
  • Claim 2 relates to an advantageous embodiment of the invention, in which the tool punch receptacle tuned to the tool head height of a set on the tool punch recording tool punch in the relevant for the workpiece machining positions along the stroke axis is deliverable. A trouble-free workpiece machining despite the use of tools with very different high tool heads is ensured.
  • the embodiment of the invention according to claim 3 is characterized in which the tool matrices recording in the decisive for workpiece machining positions along the stroke axis is deliverable.
  • the tool die receptacle for exchanging and exchanging tool dies by means of the tool drive along the lifting axis in a tool change position undelivered is the tool die receptacle starting from the tool change position matched to the Tool head height of a tool die fixed to the tool die receiving means of the tool drive along the stroke axis of the workpiece support deliverable away.
  • the tool heads of the tool dies must be designed such that the tool heads are arranged in the tool change position of the tool die receptacle below the workpiece support. Because a tool die projecting beyond the workpiece support hinders a positioning of the workpiece along the workpiece support.
  • said size limitation is omitted.
  • tool matrices can be used with tool heads, which protrude in the tool change position of the tool matrices recording on the workpiece support along the Hubachse. After such a tool die has been loaded, the tool die receptacle is tuned to the tool head height of the tool die for subsequent workpiece machining along the stroke axis until the tool head of the tool die no longer protrudes beyond the workpiece support.
  • the drive for the tool punch holder and the drive for the tool die holder are decoupled from each other. Consequently, a result.
  • Machine tool in which the tool heads of the tool punch and the tool dies can be designed independently of each other within wide limits.
  • the machine tool according to claim 6 is characterized by simple operability in that the compensation movements according to the invention are determined and controlled on the basis of tool data stored in a numerical control unit.
  • processing facilities of the tools of the machine tool according to the invention are provided on the different heights tool heads.
  • the space available for the storage of the processing facilities for each tool can be selected individually.
  • the space can be increased compared to tools for conventional machine tools and thereby additionally available space to increase the tool stability can be used.
  • the additional Installation space can be used for additional tool elements.
  • the fact that the processing devices are designed in the form of forming strips or cutting edges is particularly advantageous for the use of the machine tool according to the invention in practice.
  • FIG. 1 shows a machine tool for cutting and / or forming plate-like workpieces in the form of a stamping / forming machine 1 for processing sheets.
  • the punching / forming machine 1 has a C-shaped machine frame 2, in the throat area of which a workpiece support 3 designed as a workpiece support is arranged, which serves to support a sheet 4 to be processed.
  • the workpiece table 3 forms a horizontal support plane 5 for the sheet 4 to be processed, which is parallel to the x / y plane of the in FIG. 1 shown coordinate system runs.
  • the clamping device 7 clamped sheet 4 in the support plane 5 of the workpiece table 3 is displaced.
  • a tool punch receptacle 8 is arranged, on which a tool punch 9 is fixed. Furthermore, at the front end of the lower leg of the C-shaped machine frame 2, a tool die holder 10 is provided, on which a tool die 11 is fixed. The tool punch 9 and the tool die 11 form a tool 12.
  • a tool drive of the punching / forming machine 1 is formed by a tool punch drive 13 and a tool die drive 14.
  • the tool punch drive 13 By means of the tool punch drive 13, the tool punch receptacle 8 together with the tool punch 9 fixed thereto can be raised and lowered along a lifting axis 15 relative to the work table 3.
  • the tool die holder 10 together with the tool die 11 fixed thereto can be raised and lowered by means of the tool die drive 14 along the stroke axis 15 relative to the workpiece table 3.
  • the tool punch receptacle 8 and the tool die receptacle 10 are rotationally adjustable by means of a tool rotary drive, not shown in detail, about a tool rotation axis 16 identical to the lifting axis 15.
  • a linear magazine 17 is provided with further tools 12.
  • the tools 12 located in the linear magazine 17 are each held by a tool cassette 18 and can be fixed to the tool punch holder 8 and the tool die holder 10 as required for workpiece machining.
  • the tool punch receptacle 8 and the tool die receptacle 10 are first transferred along the lifting axis 15 into tool changing positions. Then, an empty tool cassette 18 of the linear magazine 17 by means of the coordinate guide 6 laterally moved to the tool holders 8, 10. Support arms of the tool cassette 18 thereby encompass the tool punch 9 and the tool die 11. As soon as the holding arms of the tool cassette 18 the Tool die 9 and the tool die 11 firmly embrace the tool 12 is released from the tool punch holder 8 and the tool die holder 10. Now, the tool 12 can be pushed laterally out of the tool holders 8, 10 by means of the coordinate guide 6. Subsequently, the tool 12 to be loaded is also positioned by means of the coordinate guide 6 on the tool holders 8, 10 and clamped there.
  • the numerical control unit 19 includes, in particular, storage means 20 for storing tool data and control means 21 for measuring and increasing both the raising and lowering movements of the tool punch receptacle 8 and the raising and lowering movements of the tool die receptacle 10 based on the stored tool data Taxes.
  • FIG. 2 shows an example of a tool 12 of the punching / forming machine 1 in the form of a so-called "card guide tool".
  • the illustrated mutual arrangement of the tool punch 9 and the tool die 11 along the lifting axis 15 corresponds to the mutual arrangement when the tool punch 9 and the tool die 11 are fixed to the tool holders 8, 10 of the punching / forming machine 1.
  • the tool punch 9 has a tool shaft 22 extending along the lifting axis 15, on which the tool punch 9 can be fixed or clamped on the tool punch receptacle 8.
  • a tool head 23 follows the tool shank 22 along the stroke axis 15 and is radially widened with respect to the tool shank 22.
  • a processing device in the form of a Umformance 24 is provided on the workpiece associated side of the tool head 22 (bottom) .
  • a contact surface 25 is provided, on which the tool punch 9 is supported along the lifting axis 15 on the tool punch receptacle 8.
  • the height of the tool head 23 corresponds to the distance between the contact surface 25 and the lowermost edge or surface of the forming strip 24th
  • the tool die 11 also has a tool shank 26 for fixing the tool die 11 to the tool die receptacle 10.
  • a plate-shaped tool head 28 is provided on the tool die 11, which is widened partially radially to the lifting axis 15 with respect to the tool shank 26 and on which two forming strips 29 are provided as processing devices.
  • the height of the tool head 28 is measured as the distance between the bottom 30 of the tool head 28 and the top edge or surface of the Umformologyn 29th
  • the others in the linear magazine 17 of the punching / forming machine 1 off FIG. 1 arranged tools 12 differ from that in FIG. 2
  • various tool dies 9 with different height tool heads 23 and different tool dies 11 are provided with different heights tool heads 28.
  • the tool shanks 22, 26 of the tool punches 9 and the tool dies 11 are each designed structurally uniform.
  • tool cassettes 18 are provided in two different sizes, which essentially differ only by the distance which the tool dies 9 and tool dies 11 held in the tool cassettes 11 take along the stroke axis 15.
  • FIGS. 3 to 6 The relationships on the tool holders 8, 10 of the punching / forming machine 1 during a workpiece machining on the basis of FIGS. 3 to 6 explained.
  • On the left side of the FIGS. 3 to 6 the conditions are shown in a workpiece machining with a tool 12 of the first type.
  • On the right side of the FIGS. 3 to 6 the conditions in a workpiece machining with a tool 12 'second Type shown.
  • the tool 12 on the left side has along the lifting axis 15 significantly lower tool heads 23, 28 than the tool 12 'on the right side. Both tools 12, 12 'are used to create transformations.
  • FIG. 3 the conditions are shown immediately after the replacement of the tools 12, 12 '.
  • the tool punch holder 8 and the tool die holder 10 take along the lifting axis 15 their tool change positions.
  • the tool change positions of the tool die holder 10 are identical for both tools 12, 12 '- as well as for all other tools - since in the linear magazine 17 the underside of all tool dies 11 (contact surface 27) is arranged at the same height along the stroke axis 15 , This matching horizontal position, the tool matrices 11 also in the case of lateral replacement in the tool die holder 10 at.
  • the tool change positions of the tool punch holder 8 are different from each other.
  • the tool punch receptacle 8 is lowered further along the lifting axis 15 than on the right side.
  • the reason for the different tool change positions of the tool punch receptacle 8 is that the left tool 12 is held in the linear magazine 17 by a lower tool cassette 18 than the right tool 12 '.
  • the one on the left side of FIG. 3 As a result, tool dies 9 shown are arranged lower along the stroke axis 15 than those on the right side of FIG. 1 , These different positions of the tool punch 9 along the lifting axis 15 must be taken into account when changing the tool punch 9 in the tool punch holder 8 by different tool change positions of the tool punch holder 8.
  • FIG. 3 By the way is off FIG. 3 it can be seen that the tool die 11 on the left side of FIG. 3 is arranged immediately after the replacement completely below the support plane 5 of the workpiece table 3, while in the case of Tool 12 'on the right side of FIG. 3 the tool head 28 of the tool die 11 projects beyond the support plane 5 of the workpiece table 3 along the lifting axis 15.
  • the tool die holder 10 is lowered to the height of the tool heads 28 of the clamped tool dies 11 in different stroke starting positions ( FIG. 4 ). Furthermore, the tool punch receptacle 8 is lowered in accordance with the height of the tool heads 23 of the clamped tool dies 9 into different working basic positions, in which the undersides of the tool heads 23 are arranged on the upper side of the sheet 4 to be processed ( FIG. 5 ).
  • FIG. 6 shows in each case the conditions after completion of a running of the tool die holder 10 starting from the Hubausgangslagen working stroke.
  • the tool die holder 10 assume Hubendlagen, which are different depending on the height of the tool head 28.
  • punching tools can also be used on the punching / forming machine 1.
  • tools may be provided which are designed such that the working stroke is performed by the tool punch receptacle 8 and the tool die receptacle 10 occupies a basic work position during workpiece machining.
  • tool data are stored for the tools 12 equipped in the linear magazine, which make it possible to determine the required positions of the tool punch receptacle 8 and the tool die receptacle 10.
  • the tool head heights of the various tool dies 9 and the various tool dies 11 or at least tool data dependent on the tool head heights are stored.

Abstract

The tool (1) has different punching dies (9) and tool matrices with high die heads, which are different along a hub axis (15). The punching dies and tool matrices are utilized for workpiece processing. A punching die-holder coordinates with die head heights of the punching dies attached to the punching die-holder. A tool matrix holder (10) co-operates with die head heights of the tool matrices fixed to the tool matrix holder. The punching die-holder and tool matrix holder are delivered along the hub-axis with respect to a workpiece support by tool drives (13, 14).

Description

Die Erfindung betrifft eine Werkzeugmaschine zum Schneiden und/oder Umformen von plattenartigen Werkstücken, vorzugsweise von Blechen,

  • mit einer Werkstückauflage,
  • mit einer Werkzeugstempel-Aufnahme, an welcher ein Werkzeugstempel festlegbar ist,
  • mit einer Werkzeugmatrizen-Aufnahme, an welcher eine Werkzeugmatrize festlegbar ist,
  • mit einem Werkzeugantrieb, mittels dessen die Werkzeugstempel-Aufnahme und die Werkzeugmatrizen-Aufnahme zur Bearbeitung eines auf der Werkstückauflage lagernden Werkstückes entlang einer Hubachse aufeinander zu bewegbar sind sowie
  • mit mehreren Werkzeugstempeln und mit mehreren Werkzeugmatrizen, die zur Werkstückbearbeitung an den Werkzeugaufnahmen wahlweise festlegbar sind,
wobei die Werkzeugstempel und die Werkzeugmatrizen jeweils einen Werkzeugschaft aufweisen, an welchem der betreffende Werkzeugstempel an der Werkzeugstempel-Aufnahme bzw. die betreffende Werkzeugmatrize an der Werkzeugmatrizen-Aufnahme festlegbar sind, und wobei an den Werkzeugstempeln und an den Werkzeugmatrizen jeweils ein Werkzeugkopf vorgesehen ist, welcher entlang der Hubachse auf den Werkzeugschaft werkstückseitig folgt und gegenüber dem Werkzeugschaft zumindest teilweise radial zur Hubachse erweitert ist.The invention relates to a machine tool for cutting and / or forming plate-like workpieces, preferably sheets,
  • with a workpiece support,
  • with a tool punch holder, on which a tool punch can be fixed,
  • with a tool die receptacle on which a tool die can be fixed,
  • with a tool drive, by means of which the tool punch receptacle and the tool die receptacle for machining a workpiece bearing on the workpiece support can be moved toward one another along a lifting axis and also
  • with a plurality of tool dies and with a plurality of tool dies which can be optionally fixed to the tool holders for workpiece machining,
wherein the tool punches and the tool dies each have a tool shank, on which the respective tool punch can be fixed to the tool punch receptacle or the relevant tool die on the tool die receptacle, and wherein a tool head is provided on each of the tool punches and on the tool dies along the stroke axis on the tool shaft workpiece side follows and opposite the tool shank is at least partially expanded radially to the stroke axis.

Werkzeugmaschinen der vorstehenden Art werden bevorzugt bei der flexiblen Blechbearbeitung in Form von Stanz-Umformmaschinen verwendet. Diese Maschinen erlauben es, verschiedene Werkstückbearbeitungen auf ein und derselben Werkzeugmaschine durchzuführen. Beispielsweise können Blechteile entlang ihrer Außenkontur aus dem Blechverbund freigeschnitten werden und an den Blechteilen zudem Umformungen vorgenommen werden.Machine tools of the above type are preferably used in the flexible sheet metal processing in the form of stamping forming machines. These machines make it possible to perform different workpiece machining on one and the same machine tool. For example, sheet metal parts along its outer contour are cut free from the sheet metal composite and also transformations are made to the sheet metal parts.

Eine gattungsgemäße Werkzeugmaschine bildet die von der Firma Trumpf Werkzeugmaschinen GmbH + Co. KG angebotene Stanzmaschine TruPunch® 5000. Die Stanzmaschine TruPunch® 5000 besitzt Monowerkzeugaufnahmen, d. h. Werkzeugaufnahmen, an welchen jeweils ein einzelnes Werkzeug, welches einen Werkzeugstempel und eine Werkzeugmatrize umfasst, festgelegt wird. Weitere Werkzeuge befinden sich in einem Werkzeugmagazin und können zur Werkstückbearbeitung bedarfsabhängig in die Monowerkzeugaufnahmen eingewechselt werden.A generic machine tool forms the offered by Trumpf Werkzeugmaschinen GmbH + Co. KG TruPunch ® 5000. The TruPunch ® 5000 has Mono tool holders, that tool holders, in each of which a single tool which comprises a tool punch, and a tool die, is determined. Additional tools can be found in a tool magazine and can be loaded into the mono tool holders for workpiece machining as required.

Die Monowerkzeugaufnahmen weisen eine mittels eines hydraulischen Hubantriebs heb- und senkbare Werkzeugstempel-Aufnahme und eine feststehende Werkzeugmatrizen-Aufnahme auf. Zur Lagerung eines zu bearbeitenden Bleches dient ein Werkstücktisch.The Monowerkzeugaufnahmen have a liftable by means of a hydraulic lifting drive and lowerable tool punch recording and a fixed tool die recording. For storage of a sheet to be processed is a workpiece table.

Eine Werkstückbearbeitung erfolgt, indem die Werkzeugstempel-Aufnahme mitsamt einem daran festgelegten Werkzeugstempel auf das auf dem Werkstücktisch gelagerte Blech abgesenkt wird und infolgedessen das Blech unter Beaufschlagung durch den Werkzeugstempel einerseits und die Werkzeugmatrize andererseits bearbeitet wird.Workpiece machining takes place by lowering the tool punch receptacle together with a tool punch fixed thereon onto the metal sheet supported on the workpiece table, and as a result the sheet is machined under the action of the tool punch on the one hand and the tool die on the other hand.

Die Werkzeugstempel und die Werkzeugmatrizen der Stanzmaschine TruPunch® 5000 besitzen eine pilzförmige Bauform. Zum Festlegen an der Werkzeugaufnahme weisen die Werkzeugstempel und die Werkzeugmatrizen jeweils einen Werkzeugschaft auf. Die Bearbeitungseinrichtungen der Werkzeuge in Form von Schneidkanten oder von Umformleisten sind an gegenüber den Werkzeugschäften radial erweiterten Werkzeugköpfen vorgesehen.The tool punches and tool dies of the TruPunch ® 5000 punching machine have a mushroom-shaped design. For fixing to the tool holder, the tool punches and the tool dies each have a tool shank. The processing facilities of the tools in the form of cutting edges or Umformleisten are provided on opposite the tool shanks radially enlarged tool heads.

Ingesamt sind bei der Konstruktion von Werkzeugen für die gattungsgemäße Werkzeugmaschine erhebliche Restriktionen durch die an den Werkzeugaufnahmen herrschenden Platzverhältnisse zu berücksichtigen.Overall, in the construction of tools for the generic machine tool considerable restrictions to be considered by the prevailing at the tool holders space conditions.

Die EP 0 417 836 B1 offenbart eine Stanzmaschine, bei welcher sowohl eine Stanzstempel-Aufnahme als auch eine Stanzmatrizen-Aufnahme entlang einer Hubachse gegenüber einem Werkstücktisch zustellbar sind, um Veränderungen der Werkzeuggesamthöhen entlang der Hubachse aufgrund eines von Zeit zu Zeit erforderlichen Nachschleifens der Stanzwerkzeuge zu kompensieren. Trotz dieser Zustellbewegungen zur Kompensation der geringfügigen, verschleißbedingten Reduzierung der Werkzeughöhen sind die Stanzwerkzeuge für die aus der EP 0 417 836 B1 bekannte Stanzmaschine - genauso wie im Falle der gattungsgemäßen Stanzmaschine TruPunch® 5000 - erheblichen Restriktionen aufgrund der Platzverhältnisse an den Werkzeugaufnahmen unterworfen.The EP 0 417 836 B1 discloses a punching machine in which both a punch recording and a punching die recording along a lifting axis relative to a work table are deliverable to compensate for changes in the tool total heights along the lifting axis due to a required from time to time regrinding of the punching tools. Despite these feed movements to compensate for the minor, wear-related reduction of tool heights the punching tools for the out of the EP 0 417 836 B1 known punching machine - just as in the case of the generic punching machine TruPunch ® 5000 - subject to considerable restrictions due to the space available at the tool holders.

Aufgabe der vorliegenden Erfindung ist es, eine herkömmliche Werkzeugmaschine derart weiterzubilden, dass die Möglichkeiten zur Gestaltung der auf der Werkzeugmaschine einsetzbaren Werkzeuge erweitert werden.Object of the present invention is to develop a conventional machine tool such that the possibilities for the design of usable on the machine tool tools are extended.

Diese Aufgabe wird durch eine Werkzeugmaschine mit den Merkmalen des Patentanspruches 1 gelöst, indem sowohl verschiedene Werkzeugstempel, welche entlang der Hubachse unterschiedlich hohe Werkzeugköpfe aufweisen, als auch verschiedene Werkzeugmatrizen, welche ebenfalls entlang der Hubachse unterschiedlich hohe Werkzeugköpfe aufweisen, zur Werkstückbearbeitung vorgesehen sind und wobei sowohl die Werkzeugstempel-Aufnahme abgestimmt auf die Werkzeugkopfhöhe eines an der Werkzeugstempel-Aufnahme festgelegten Werkzeugstempels als auch die Werkzeugmatrizen-Aufnahme abgestimmt auf die Werkzeugkopfhöhe einer an der Werkzeugmatrizen-Aufnahme festgelegten Werkzeugmatrize mittels des Werkzeugantriebs entlang der Hubachse gegenüber der Werkstückauflage zustellbar sind.This object is achieved by a machine tool having the features of claim 1 by both different tool punches, which have along the lifting axis differently high tool heads, as well as different tool dies, which also along the stroke axis have different height tool heads, are provided for workpiece machining and both the tool punch receptacle matched to the tool head height of a set on the tool punch receptacle tool stamp and the tool die recording matched to the tool head height of a tool matrices set on the tool die by means of the tool drive along the stroke axis relative to the workpiece support are deliverable.

Bei der erfindungsgemäßen Werkzeugmaschine sind folglich die im Falle der herkömmlichen Werkzeugmaschine zu beachtenden Restriktionen der Werkzeuggestaltung erheblich reduziert.Consequently, in the case of the machine tool according to the invention, the restrictions of the tool design to be observed in the case of the conventional machine tool are considerably reduced.

Insbesondere besteht ein Vorteil der Erfindung darin, dass auf der erfindungsgemäßen Werkzeugmaschine Werkzeuge mit Werkzeugköpfen eingesetzt werden können, welche im Vergleich zu Werkzeugköpfen von Werkzeugen für eine herkömmliche Werkzeugmaschine höher ausgebildet sind und folglich einen größeren Bauraum besitzen, dass aber dank der ausgleichenden Zustellbewegungen der Werkzeugaufnahmen gleichzeitig auch die Werkzeuge für eine herkömmliche Werkzeugmaschine verwendet werden können.In particular, an advantage of the invention is that on the machine tool according to the invention tools can be used with tool heads, which compared to tool heads of tools for a conventional machine tool are designed to be higher and therefore have a larger space, but that thanks to the compensating feed movements of the tool holders at the same time the tools for a conventional machine tool can be used.

Vorteilhafterweise erfolgen die Kompensationsbewegungen der Werkzeugaufnahmen mittels des Werkzeugantriebes maschinell angetrieben und folglich automatisch.Advantageously, the compensation movements of the tool holders by means of the tool drive are driven by a machine and thus automatically.

Besondere Ausführungsarten der Erfindung nach Patentanspruch 1 ergeben sich aus den abhängigen Patentansprüchen 2 bis 8.Particular embodiments of the invention according to claim 1 emerge from the dependent claims 2 to 8.

Patentanspruch 2 betrifft eine vorteilhafte Ausführungsart der Erfindung, bei welcher die Werkzeugstempel-Aufnahme abgestimmt auf die Werkzeugkopfhöhe eines an der Werkzeugstempel-Aufnahme festgelegten Werkzeugstempels in die für die Werkstückbearbeitung maßgeblichen Positionen entlang der Hubachse zustellbar ist. Eine störungsfreie Werkstückbearbeitung trotz der Verwendung von Werkzeugen mit sehr unterschiedlich hohen Werkzeugköpfen ist sichergestellt.Claim 2 relates to an advantageous embodiment of the invention, in which the tool punch receptacle tuned to the tool head height of a set on the tool punch recording tool punch in the relevant for the workpiece machining positions along the stroke axis is deliverable. A trouble-free workpiece machining despite the use of tools with very different high tool heads is ensured.

Durch einen entsprechenden Vorteil zeichnet sich auch die Ausführungsart der Erfindung nach Patentanspruch 3 aus, bei welcher die Werkzeugmatrizen-Aufnahme in die für die Werkstückbearbeitung maßgeblichen Positionen entlang der Hubachse zustellbar ist.By a corresponding advantage, the embodiment of the invention according to claim 3 is characterized in which the tool matrices recording in the decisive for workpiece machining positions along the stroke axis is deliverable.

Gemäß einer besonders bevorzugten Ausführungsform der Erfindung (Patentanspruch 4) ist die Werkzeugmatrizen-Aufnahme zum Ein- und Auswechseln von Werkzeugmatrizen mittels des Werkzeugantriebs entlang der Hubachse in eine Werkzeugwechsel-Position zustellbar und ist die Werkzeugmatrizen-Aufnahme ausgehend von der Werkzeugwechsel-Position abgestimmt auf die Werkzeugkopfhöhe einer an der Werkzeugmatrizen-Aufnahme festgelegten Werkzeugmatrize mittels des Werkzeugantriebs entlang der Hubachse von der Werkstückauflage weg zustellbar.According to a particularly preferred embodiment of the invention (claim 4), the tool die receptacle for exchanging and exchanging tool dies by means of the tool drive along the lifting axis in a tool change position undelivered and is the tool die receptacle starting from the tool change position matched to the Tool head height of a tool die fixed to the tool die receiving means of the tool drive along the stroke axis of the workpiece support deliverable away.

Für einen Einsatz auf einer herkömmlichen Werkzeugmaschine müssen die Werkzeugköpfe der Werkzeugmatrizen derart gestaltet werden, dass die Werkzeugköpfe in der Werkzeugwechsel-Position der Werkzeugmatrizen-Aufnahme unterhalb der Werkstückauflage angeordnet sind. Denn eine über die Werkstückauflage ragende Werkzeugmatrize behindert eine Positionierung des Werkstücks entlang der Werkstückauflage.For use on a conventional machine tool, the tool heads of the tool dies must be designed such that the tool heads are arranged in the tool change position of the tool die receptacle below the workpiece support. Because a tool die projecting beyond the workpiece support hinders a positioning of the workpiece along the workpiece support.

Bei der erfindungsgemäßen Werkzeugmaschine entfällt die genannte Größenbeschränkung. Es sind Werkzeugmatrizen mit Werkzeugköpfen einsetzbar, welche in der Werkzeugwechsel-Position der Werkzeugmatrizen-Aufnahme über die Werkstückauflage entlang der Hubachse ragen. Nachdem eine derartige Werkzeugmatrize eingewechselt wurde, ist die Werkzeugmatrizen-Aufnahme abgestimmt auf die Werkzeugkopfhöhe der Werkzeugmatrize für die nachfolgende Werkstückbearbeitung entlang der Hubachse absenkbar, bis der Werkzeugkopf der Werkzeugmatrize nicht mehr über die Werkstückauflage hinausragt.In the case of the machine tool according to the invention, said size limitation is omitted. There are tool matrices can be used with tool heads, which protrude in the tool change position of the tool matrices recording on the workpiece support along the Hubachse. After such a tool die has been loaded, the tool die receptacle is tuned to the tool head height of the tool die for subsequent workpiece machining along the stroke axis until the tool head of the tool die no longer protrudes beyond the workpiece support.

Gemäß Patentanspruch 5 sind der Antrieb für die Werkzeugstempel-Aufnahme und der Antrieb für die Werkzeugmatrizen-Aufnahme voneinander entkoppelt. Folglich ergibt sich eine. Werkzeugmaschine, bei welcher die Werkzeugköpfe der Werkzeugstempel und der Werkzeugmatrizen in weiten Grenzen unabhängig voneinander gestaltet werden können.According to claim 5, the drive for the tool punch holder and the drive for the tool die holder are decoupled from each other. Consequently, a result. Machine tool in which the tool heads of the tool punch and the tool dies can be designed independently of each other within wide limits.

Die Werkzeugmaschine nach Patentanspruch 6 zeichnet sich durch eine einfache Bedienbarkeit aus, indem die erfindungsgemäßen Kompensationsbewegungen anhand von in einer numerischen Steuereinheit gespeicherten Werkzeugdaten ermittelt und gesteuert werden.The machine tool according to claim 6 is characterized by simple operability in that the compensation movements according to the invention are determined and controlled on the basis of tool data stored in a numerical control unit.

Ausweislich Patentanspruch 7 sind Bearbeitungseinrichtungen der Werkzeuge der erfindungsgemäßen Werkzeugmaschine an den unterschiedlich hohen Werkzeugköpfen vorgesehen. Auf diese Weise kann der für die Lagerung der Bearbeitungseinrichtungen verfügbare Bauraum für jedes Werkzeug individuell gewählt werden. Insbesondere kann der Bauraum gegenüber Werkzeugen für herkömmliche Werkzeugmaschinen vergrößert und der dadurch zusätzlich verfügbare Bauraum zur Erhöhung der Werkzeugstabilität genutzt werden. Auch kann der zusätzliche Bauraum für zusätzliche Werkzeugelemente verwendet werden. Dass die Bearbeitungseinrichtungen in Form von Umformleisten oder Schneidkanten ausgebildet sind, ist besonders für den Einsatz der erfindungsgemäßen Werkzeugmaschine in der Praxis vorteilhaft.As shown in claim 7 processing facilities of the tools of the machine tool according to the invention are provided on the different heights tool heads. In this way, the space available for the storage of the processing facilities for each tool can be selected individually. In particular, the space can be increased compared to tools for conventional machine tools and thereby additionally available space to increase the tool stability can be used. Also, the additional Installation space can be used for additional tool elements. The fact that the processing devices are designed in the form of forming strips or cutting edges is particularly advantageous for the use of the machine tool according to the invention in practice.

Dementsprechend ist auch die Gestaltung von Werkzeugen der erfindungsgemäßen Werkzeugmaschine als Stanzwerkzeuge oder als Umformwerkzeuge (Patentanspruch 8) von besonderer praktischer Bedeutung.Accordingly, the design of tools of the machine tool according to the invention as punching tools or as forming tools (claim 8) is of particular practical importance.

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

Figur 1:
eine Werkzeugmaschine zum Schneiden und /oder Umformen von Blechen,
Figur 2:
ein Umformwerkzeug der Werkzeugmaschine aus Figur 1 und
Figuren 3 bis 6:
die Verhältnisse an den Werkzeugaufnahmen der Werkzeugmaschine aus Figur 1 während einer Werkstückbearbeitung mit einem Werkzeug erster Bauart und zum Vergleich mit einem Werkzeug zweiter Bauart.
The invention will be explained in more detail with reference to schematic representations of exemplary embodiments. Show it:
FIG. 1:
a machine tool for cutting and / or forming sheet metal,
FIG. 2:
a forming tool of the machine tool FIG. 1 and
FIGS. 3 to 6:
the conditions at the tool holders of the machine tool FIG. 1 during a workpiece machining with a tool of the first type and for comparison with a tool of the second type.

Figur 1 zeigt eine Werkzeugmaschine zum Schneiden und/oder Umformen von plattenartigen Werkstücken in Form einer Stanz-/Umformmaschine 1 zum Bearbeiten von Blechen. Die Stanz-/Umformmaschine 1 weist ein C-förmiges Maschinengestell 2 auf, in dessen Rachenraum eine als Werkstücktisch 3 ausgebildete Werkstückauflage angeordnet ist, welche zur Lagerung eines zu bearbeitenden Bleches 4 dient. An seiner Oberseite bildet der Werkstücktisch 3 eine horizontale Auflageebene 5 für das zu bearbeitende Blech 4, welche parallel zu der x/y-Ebene des in Figur 1 gezeigten Koordinatensystems verläuft. Mittels einer Koordinatenführung 6 ist das über Spannzangen 7 eingespannte Blech 4 in der Auflageebene 5 des Werkstücktisches 3 verschiebbar. FIG. 1 shows a machine tool for cutting and / or forming plate-like workpieces in the form of a stamping / forming machine 1 for processing sheets. The punching / forming machine 1 has a C-shaped machine frame 2, in the throat area of which a workpiece support 3 designed as a workpiece support is arranged, which serves to support a sheet 4 to be processed. On its upper side, the workpiece table 3 forms a horizontal support plane 5 for the sheet 4 to be processed, which is parallel to the x / y plane of the in FIG. 1 shown coordinate system runs. By means of a coordinate guide 6, the clamping device 7 clamped sheet 4 in the support plane 5 of the workpiece table 3 is displaced.

An dem vorderen Ende des oberen Schenkels des C-förmigen Maschinengestells 2 ist eine Werkzeugstempel-Aufnahme 8 angeordnet, an welcher ein Werkzeugstempel 9 festgelegt ist. Weiterhin ist an dem vorderen Ende des unteren Schenkels des C-förmigen Maschinengestells 2 eine Werkzeugmatrizen-Aufnahme 10 vorgesehen, an welcher eine Werkzeugmatrize 11 festgelegt ist. Der Werkzeugstempel 9 und die Werkzeugmatrize 11 bilden ein Werkzeug 12.At the front end of the upper leg of the C-shaped machine frame 2, a tool punch receptacle 8 is arranged, on which a tool punch 9 is fixed. Furthermore, at the front end of the lower leg of the C-shaped machine frame 2, a tool die holder 10 is provided, on which a tool die 11 is fixed. The tool punch 9 and the tool die 11 form a tool 12.

Ein Werkzeugantrieb der Stanz-/Umformmaschine 1 wird von einem Werkzeugstempel-Antrieb 13 und einem Werkzeugmatrizen-Antrieb 14 gebildet. Mittels des Werkzeugstempel-Antriebs 13 ist die Werkzeugstempel-Aufnahme 8 mitsamt dem daran festgelegten Werkzeugstempel 9 entlang einer Hubachse 15 gegenüber dem Werkstücktisch 3 heb- und senkbar. In vergleichbarer Weise ist die Werkzeugmatrizen-Aufnahme 10 mitsamt der daran festgelegten Werkzeugmatrize 11 mittels des Werkzeugmatrizen-Antriebs 14 entlang der Hubachse 15 gegenüber dem Werkstücktisch 3 heb- und senkbar.A tool drive of the punching / forming machine 1 is formed by a tool punch drive 13 and a tool die drive 14. By means of the tool punch drive 13, the tool punch receptacle 8 together with the tool punch 9 fixed thereto can be raised and lowered along a lifting axis 15 relative to the work table 3. In a comparable manner, the tool die holder 10 together with the tool die 11 fixed thereto can be raised and lowered by means of the tool die drive 14 along the stroke axis 15 relative to the workpiece table 3.

Weiterhin sind die Werkzeugstempel-Aufnahme 8 und die Werkzeugmatrizen-Aufnahme 10 mittels eines nicht näher gezeigten Werkzeugdrehantriebs um eine mit der Hubachse 15 identischen Werkzeugdrehachse 16 dreheinstellbar.Furthermore, the tool punch receptacle 8 and the tool die receptacle 10 are rotationally adjustable by means of a tool rotary drive, not shown in detail, about a tool rotation axis 16 identical to the lifting axis 15.

An der Koordinatenführung 6 ist ein Linearmagazin 17 mit weiteren Werkzeugen 12 vorgesehen. Die in dem Linearmagazin 17 befindlichen Werkzeuge 12 werden jeweils von einer Werkzeugkassette 18 gehalten und sind je nach Bedarf zur Werkstückbearbeitung an der Werkzeugstempel-Aufnahme 8 und der Werkzeugmatrizen-Aufnahme 10 festlegbar.At the coordinate guide 6, a linear magazine 17 is provided with further tools 12. The tools 12 located in the linear magazine 17 are each held by a tool cassette 18 and can be fixed to the tool punch holder 8 and the tool die holder 10 as required for workpiece machining.

Um ein in den Werkzeugaufnahmen 8, 10 festgelegtes Werkzeug 12 durch ein an dem Linearmagazin 17 angeordnetes Werkzeug 12 auszuwechseln, werden die Werkzeugstempel-Aufnahme 8 und die Werkzeugmatrizen-Aufnahme 10 zunächst entlang der Hubachse 15 in Werkzeugwechsel-Positionen überführt. Dann wird eine leere Werkzeugkassette 18 des Linearmagazins 17 mittels der Koordinatenführung 6 seitlich an die Werkzeugaufnahmen 8, 10 bewegt. Haltearme der Werkzeugkassette 18 umgreifen dabei den Werkzeugstempel 9 und die Werkzeugmatrize 11. Sobald die Haltearme der Werkzeugkassette 18 den Werkzeugstempel 9 und die Werkzeugmatrize 11 fest umgreifen, wird das Werkzeug 12 von der Werkzeugstempel-Aufnahme 8 und von der Werkzeugmatrizen-Aufnahme 10 freigegeben. Nun kann das Werkzeug 12 mittels der Koordinatenführung 6 seitlich aus den Werkzeugaufnahmen 8, 10 herausgeschoben werden. Anschließend wird das einzuwechselnde Werkzeug 12 ebenfalls mittels der Koordinatenführung 6 an den Werkzeugaufnahmen 8, 10 positioniert und dort eingespannt.In order to replace a tool 12 fixed in the tool receptacles 8, 10 by a tool 12 arranged on the linear magazine 17, the tool punch receptacle 8 and the tool die receptacle 10 are first transferred along the lifting axis 15 into tool changing positions. Then, an empty tool cassette 18 of the linear magazine 17 by means of the coordinate guide 6 laterally moved to the tool holders 8, 10. Support arms of the tool cassette 18 thereby encompass the tool punch 9 and the tool die 11. As soon as the holding arms of the tool cassette 18 the Tool die 9 and the tool die 11 firmly embrace the tool 12 is released from the tool punch holder 8 and the tool die holder 10. Now, the tool 12 can be pushed laterally out of the tool holders 8, 10 by means of the coordinate guide 6. Subsequently, the tool 12 to be loaded is also positioned by means of the coordinate guide 6 on the tool holders 8, 10 and clamped there.

Beim Werkzeugwechsel und bei einer Werkstückbearbeitung werden sämtliche Antriebe der Stanz-/Umformmaschine 1 mittels einer numerischen Steuereinheit 19 gesteuert. Die numerische Steuereinheit 19 umfasst insbesondere Speichermittel 20 zum Speichern von Werkzeugdaten und zudem Steuermittel 21, um sowohl die Heb- und Senkbewegungen der Werkzeugstempel-Aufnahme 8 als auch die Heb- und Senkbewegungen der Werkzeugmatrizen-Aufnahme 10 basierend auf den gespeicherten Werkzeugdaten zu bemessen und zu steuern.During tool change and during workpiece machining, all drives of the stamping / forming machine 1 are controlled by means of a numerical control unit 19. The numerical control unit 19 includes, in particular, storage means 20 for storing tool data and control means 21 for measuring and increasing both the raising and lowering movements of the tool punch receptacle 8 and the raising and lowering movements of the tool die receptacle 10 based on the stored tool data Taxes.

Figur 2 zeigt beispielhaft ein Werkzeug 12 der Stanz-/Umformmaschine 1 in Form eines so genannten "Cardguide-Werkzeuges". Die dargestellte gegenseitige Anordnung des Werkzeugstempels 9 und der Werkzeugmatrize 11 entlang der Hubachse 15 entspricht der gegenseitigen Anordnung, wenn der Werkzeugstempel 9 und die Werkzeugmatrize 11 an den Werkzeugaufnahmen 8, 10 der Stanz-/Umformmaschine 1 festgelegt sind. FIG. 2 shows an example of a tool 12 of the punching / forming machine 1 in the form of a so-called "card guide tool". The illustrated mutual arrangement of the tool punch 9 and the tool die 11 along the lifting axis 15 corresponds to the mutual arrangement when the tool punch 9 and the tool die 11 are fixed to the tool holders 8, 10 of the punching / forming machine 1.

Der Werkzeugstempel 9 weist einen entlang der Hubachse 15 verlaufenden Werkzeugschaft 22 auf, an welchem der Werkzeugstempel 9 an der Werkzeugstempel-Aufnahme 8 festlegbar bzw. einspannbar ist. Ein Werkzeugkopf 23 folgt auf den Werkzeugschaft 22 entlang der Hubachse 15 und ist gegenüber dem Werkzeugschaft 22 radial erweitert. An der dem Werkstück zugeordneten Seite des Werkzeugkopfes 22 (Unterseite) ist eine Bearbeitungseinrichtung in Form einer Umformleiste 24 vorgesehen. An der von dem Werkstück abgewandten Seite des Werkstückkopfes 23 ist eine Anlagefläche 25 vorgesehen, an welcher der Werkzeugstempel 9 entlang der Hubachse 15 an der Werkzeugstempel-Aufnahme 8 abgestützt wird. Die Höhe des Werkzeugkopfes 23 entspricht dem Abstand zwischen der Anlagefläche 25 und der untersten Kante bzw. Fläche der Umformleiste 24.The tool punch 9 has a tool shaft 22 extending along the lifting axis 15, on which the tool punch 9 can be fixed or clamped on the tool punch receptacle 8. A tool head 23 follows the tool shank 22 along the stroke axis 15 and is radially widened with respect to the tool shank 22. On the workpiece associated side of the tool head 22 (bottom) a processing device in the form of a Umformleiste 24 is provided. At the side facing away from the workpiece side of the workpiece head 23, a contact surface 25 is provided, on which the tool punch 9 is supported along the lifting axis 15 on the tool punch receptacle 8. The height of the tool head 23 corresponds to the distance between the contact surface 25 and the lowermost edge or surface of the forming strip 24th

Die Werkzeugmatrize 11 weist ebenfalls einen Werkzeugschaft 26 zum Festlegen der Werkzeugmatrize 11 an der Werkzeugmatrizen-Aufnahme 10 auf. Zur Abstützung der Werkzeugmatrize 11 entlang der Hubachse 15 dient eine Anlagefläche 27 an der Unterseite des Werkzeugschaftes 26.The tool die 11 also has a tool shank 26 for fixing the tool die 11 to the tool die receptacle 10. To support the tool die 11 along the lifting axis 15 is a contact surface 27 on the underside of the tool shank 26th

Werkstückseitig und entlang der Hubachse 15 auf den Werkzeugschaft 26 folgend ist an der Werkzeugmatrize 11 ein tellerförmiger Werkzeugkopf 28 vorgesehen, welcher teilweise radial zur Hubachse 15 gegenüber dem Werkzeugschaft 26 erweitert ist und an dem als Bearbeitungseinrichtungen zwei Umformleisten 29 vorgesehen sind. Die Höhe des Werkzeugkopfes 28 bemisst sich als der Abstand zwischen der Unterseite 30 des Werkzeugkopfes 28 und der obersten Kante bzw. Fläche der Umformleisten 29.On the workpiece side and along the lifting axis 15 following the tool shank 26, a plate-shaped tool head 28 is provided on the tool die 11, which is widened partially radially to the lifting axis 15 with respect to the tool shank 26 and on which two forming strips 29 are provided as processing devices. The height of the tool head 28 is measured as the distance between the bottom 30 of the tool head 28 and the top edge or surface of the Umformleisten 29th

Die anderen in dem Linearmagazin 17 der Stanz-/Umformmaschine 1 aus Figur 1 angeordneten Werkzeuge 12 unterscheiden sich von dem in Figur 2 gezeigten Werkzeug 12 durch die Bauform der Werkzeugköpfe 23, 28. Insbesondere sind verschiedene Werkzeugstempel 9 mit unterschiedlich hohen Werkzeugköpfen 23 und sind verschiedene Werkzeugmatrizen 11 mit unterschiedlich hohen Werkzeugköpfen 28 versehen. Die Werkzeugschäfte 22, 26 der Werkzeugstempel 9 und der Werkzeugmatrizen 11 sind jeweils baulich einheitlich ausgebildet.The others in the linear magazine 17 of the punching / forming machine 1 off FIG. 1 arranged tools 12 differ from that in FIG. 2 In particular, various tool dies 9 with different height tool heads 23 and different tool dies 11 are provided with different heights tool heads 28. The tool shanks 22, 26 of the tool punches 9 and the tool dies 11 are each designed structurally uniform.

Zum Halten der verschiedenen Werkzeuge 12 in dem Linearmagazin 17 sind Werkzeugkassetten 18 in zwei unterschiedlichen Baugrößen vorgesehen, die sich im Wesentlichen nur durch den Abstand unterscheiden, welchen die in den Werkzeugkassetten 18 gehaltenen Werkzeugstempel 9 und Werkzeugmatrizen 11 entlang der Hubachse 15 zueinander einnehmen.To hold the various tools 12 in the linear magazine 17, tool cassettes 18 are provided in two different sizes, which essentially differ only by the distance which the tool dies 9 and tool dies 11 held in the tool cassettes 11 take along the stroke axis 15.

Im Folgenden werden die Verhältnisse an den Werkzeugaufnahmen 8, 10 der Stanz-/Umformmaschine 1 während einer Werkstückbearbeitung anhand der Figuren 3 bis 6 erläutert. Auf der linken Seite der Figuren 3 bis 6 sind die Verhältnisse bei einer Werkstückbearbeitung mit einem Werkzeug 12 erster Bauart gezeigt. Zum Vergleich sind auf der rechten Seite der Figuren 3 bis 6 die Verhältnisse bei einer Werkstückbearbeitung mit einem Werkzeug 12' zweiter Bauart dargestellt. Das Werkzeug 12 auf der linken Seite weist entlang der Hubachse 15 deutlich niedrigere Werkzeugköpfe 23, 28 auf als das Werkzeug 12' auf der rechten Seite. Beide Werkzeuge 12, 12' dienen zum Erstellen von Umformungen.The relationships on the tool holders 8, 10 of the punching / forming machine 1 during a workpiece machining on the basis of FIGS. 3 to 6 explained. On the left side of the FIGS. 3 to 6 the conditions are shown in a workpiece machining with a tool 12 of the first type. For comparison, on the right side of the FIGS. 3 to 6 the conditions in a workpiece machining with a tool 12 'second Type shown. The tool 12 on the left side has along the lifting axis 15 significantly lower tool heads 23, 28 than the tool 12 'on the right side. Both tools 12, 12 'are used to create transformations.

In Figur 3 sind die Verhältnisse unmittelbar nach dem Einwechseln der Werkzeuge 12, 12' dargestellt. Die Werkzeugstempel-Aufnahme 8 und die Werkzeugmatrizen-Aufnahme 10 nehmen entlang der Hubachse 15 ihre Werkzeugwechsel-Positionen ein.In FIG. 3 the conditions are shown immediately after the replacement of the tools 12, 12 '. The tool punch holder 8 and the tool die holder 10 take along the lifting axis 15 their tool change positions.

Die Werkzeugwechsel-Positionen der Werkzeugmatrizen-Aufnahme 10 sind für beide Werkzeuge 12, 12' - wie auch für sämtliche andere Werkzeuge - identisch, da in dem Linearmagazin 17 die Unterseite sämtlicher Werkzeugmatrizen 11 (Anlagefläche 27) auf derselben Höhe entlang der Hubachse 15 angeordnet ist. Diese übereinstimmende horizontale Lage behalten die Werkzeugmatrizen 11 auch beim seitlichen Einwechseln in die Werkzeugmatrizen-Aufnahme 10 bei.The tool change positions of the tool die holder 10 are identical for both tools 12, 12 '- as well as for all other tools - since in the linear magazine 17 the underside of all tool dies 11 (contact surface 27) is arranged at the same height along the stroke axis 15 , This matching horizontal position, the tool matrices 11 also in the case of lateral replacement in the tool die holder 10 at.

Die Werkzeugwechsel-Positionen der Werkzeugstempel-Aufnahme 8 unterscheiden sich jedoch voneinander. Auf der linken Seite von Figur 3 ist die Werkzeugstempel-Aufnahme 8 weiter entlang der Hubachse 15 abgesenkt als auf der rechten Seite. Der Grund für die unterschiedlichen Werkzeugwechsel-Positionen der Werkzeugstempel-Aufnahme 8 besteht darin, dass das linke Werkzeug 12 in dem Linearmagazin 17 durch eine niedrigere Werkzeugkassette 18 gehalten wird als das rechte Werkzeug 12'. Der auf der linken Seite von Figur 3 gezeigte Werkzeugstempel 9 ist infolgedessen entlang der Hubachse 15 niedriger angeordnet als derjenige auf der rechten Seite von Figur 1. Diese unterschiedlichen Positionen der Werkzeugstempel 9 entlang der Hubachse 15 müssen beim Einwechseln der Werkzeugstempel 9 in der Werkzeugstempel-Aufnahme 8 durch unterschiedliche Werkzeugwechsel-Positionen der Werkzeugstempel-Aufnahme 8 berücksichtigt werden.However, the tool change positions of the tool punch holder 8 are different from each other. On the left side of FIG. 3 the tool punch receptacle 8 is lowered further along the lifting axis 15 than on the right side. The reason for the different tool change positions of the tool punch receptacle 8 is that the left tool 12 is held in the linear magazine 17 by a lower tool cassette 18 than the right tool 12 '. The one on the left side of FIG. 3 As a result, tool dies 9 shown are arranged lower along the stroke axis 15 than those on the right side of FIG FIG. 1 , These different positions of the tool punch 9 along the lifting axis 15 must be taken into account when changing the tool punch 9 in the tool punch holder 8 by different tool change positions of the tool punch holder 8.

Im Übrigen ist aus Figur 3 ersichtlich, dass die Werkzeugmatrize 11 auf der linke Seite von Figur 3 unmittelbar nach dem Einwechseln vollständig unterhalb der Auflageebene 5 des Werkstücktisches 3 angeordnet ist, während im Falle des Werkzeuges 12' auf der rechten Seite von Figur 3 der Werkzeugkopf 28 der Werkzeugmatrize 11 entlang der Hubachse 15 über die Auflageebene 5 des Werkstücktisches 3 hinausragt.By the way is off FIG. 3 it can be seen that the tool die 11 on the left side of FIG. 3 is arranged immediately after the replacement completely below the support plane 5 of the workpiece table 3, while in the case of Tool 12 'on the right side of FIG. 3 the tool head 28 of the tool die 11 projects beyond the support plane 5 of the workpiece table 3 along the lifting axis 15.

Ausgehend von den in Figur 3 gezeigten Verhältnissen wird die Werkzeugmatrizen-Aufnahme 10 abgestimmt auf die Höhe der Werkzeugköpfe 28 der eingespannten Werkzeugmatrizen 11 in verschiedene Hubausgangslagen abgesenkt (Figur 4). Weiterhin wird die Werkzeugstempel-Aufnahme 8 abgestimmt auf die Höhe der Werkzeugköpfe 23 der eingespannten Werkzeugstempel 9 in verschiedene Arbeitsgrundpositionen abgesenkt, in welchen die Unterseiten der Werkzeugköpfe 23 auf der Oberseite des zu bearbeitenden Bleches 4 angeordnet sind (Figur 5).Starting from the in FIG. 3 As shown, the tool die holder 10 is lowered to the height of the tool heads 28 of the clamped tool dies 11 in different stroke starting positions ( FIG. 4 ). Furthermore, the tool punch receptacle 8 is lowered in accordance with the height of the tool heads 23 of the clamped tool dies 9 into different working basic positions, in which the undersides of the tool heads 23 are arranged on the upper side of the sheet 4 to be processed ( FIG. 5 ).

Figur 6 zeigt jeweils die Verhältnisse nach Abschluss eines von der Werkzeugmatrizen-Aufnahme 10 ausgehend von den Hubausgangslagen ausgeführten Arbeitshubes. Die Werkzeugmatrizen-Aufnahme 10 nehmen Hubendlagen ein, welche je nach Höhe des Werkzeugkopfes 28 unterschiedlich sind. FIG. 6 shows in each case the conditions after completion of a running of the tool die holder 10 starting from the Hubausgangslagen working stroke. The tool die holder 10 assume Hubendlagen, which are different depending on the height of the tool head 28.

Alternativ oder ergänzend zu den gezeigten Werkzeugen 12, 12', welche zum Umformen eines Werkstückes dienen, können auf der Stanz-/Umformmaschine 1 auch Stanzwerkzeuge eingesetzt werden. Ebenso können Werkzeuge vorgesehen sein, welche derart ausgebildet sind, dass der Arbeitshub durch die Werkzeugstempel-Aufnahme 8 ausgeführt wird und die Werkzeugmatrizen-Aufnahme 10 bei der Werkstückbearbeitung eine Arbeitsgrundposition einnimmt.Alternatively or in addition to the tools 12, 12 'shown, which are used for forming a workpiece, punching tools can also be used on the punching / forming machine 1. Likewise, tools may be provided which are designed such that the working stroke is performed by the tool punch receptacle 8 and the tool die receptacle 10 occupies a basic work position during workpiece machining.

In den Speichermitteln 20 der numerischen Steuereinheit 19 der Stanz/Umformmaschine 1 sind Werkzeugdaten zu den in dem Linearmagazin gerüsteten Werkzeugen 12 gespeichert, die es ermöglichen, die erforderlichen Positionen der Werkzeugstempel-Aufnahme 8 und der Werkzeugmatrizen-Aufnahme 10 zu ermitteln. Beispielsweise sind die Werkzeugkopfhöhen der verschiedenen Werkzeugstempel 9 und der verschiedenen Werkzeugmatrizen 11 oder zumindest von den Werkzeugkopfhöhen abhängige Werkzeugdaten hinterlegt.In the storage means 20 of the numerical control unit 19 of the punch / forming machine 1, tool data are stored for the tools 12 equipped in the linear magazine, which make it possible to determine the required positions of the tool punch receptacle 8 and the tool die receptacle 10. For example, the tool head heights of the various tool dies 9 and the various tool dies 11 or at least tool data dependent on the tool head heights are stored.

Claims (8)

  1. A machine tool for cutting and/or forming plate-like workpieces, preferably metal sheets,
    - having a workpiece support (3),
    - having a tool punch holder (8) to which a tool punch (9) may be secured,
    - having a tool die holder (10) to which a tool die (11) may be secured,
    - having a tool drive (13, 14) by means of which the tool punch holder (8) and the tool die holder (10) may be moved towards each other along a stroke axis (15) for processing of a workpiece (4) supported on the workpiece support (3), and
    - having a plurality of tool punches (9) and a plurality of tool dies (11) which for workpiece processing may be selectively secured to the tool holders (8, 10),
    wherein the tool punches (9) and the tool dies (11) each have a tool shank (22, 26) at which the relevant tool punch (9) may be secured to the tool punch holder (8) and the relevant tool die (11) may be secured to the tool die holder (10), and wherein there is provided on the tool punches (9) and on the tool dies (11) a respective tool head (23, 28) which is at least partially enlarged radially with respect to the stroke axis (15) and relative to the tool shank (22, 26),
    characterised in that
    the tool head (23, 28) respectively provided on the tool punches (9) and on the tool dies adjoins the tool shank (22, 26) along the stroke axis (15) at the workpiece end, that both various tool punches (9), which have tool heads (23) of differing heights along the stroke axis (15), and various tool dies (11), which likewise have tool heads (28) of differing heights along the stroke axis (15), are provided for workpiece processing, and that both the tool punch holder (8) is positionable in accordance with the tool head height of a tool punch (9) secured to the tool punch holder (8) and the tool die holder (10) is positionable in accordance with the tool head height of a tool die (11) secured to the tool die holder (10), relative to the workpiece support (3) along the stroke axis (15) by means of the tool drive (13, 14).
  2. A machine tool according to claim 1, characterised in that the tool punch holder (8) is positionable, in accordance with the height of the tool head (23) of a tool punch (9) secured to the tool punch holder (8), relative to the workpiece support (3) along the stroke axis (15) by means of the tool drive (13, 14) in a stroke starting position, from which stroke starting position the tool punch holder (8) executes a working stroke for workpiece processing, and/or in a stroke end position, in which a working stroke of the tool punch holder (8) ends, and/or in a working home position, in which the tool punch holder (8) remains during workpiece processing.
  3. A machine tool according to either of the preceding claims, characterised in that the tool die holder (10) is positionable, in accordance with the height of the tool head (28) of a tool die (11) secured to the tool die holder (10), relative to the workpiece support (3) along the stroke axis (15) by means of the tool drive (13, 14) in a stroke starting position, from which stroke starting position the tool die holder (10) executes a working stroke for workpiece processing, and/or in a stroke end position, in which a working stroke of the tool die holder (10) ends, and/or in a working home position, in which the tool die holder (10) remains during workpiece processing.
  4. A machine tool according to any one of the preceding claims, characterised in that the tool die holder (10) is positionable by means of the tool drive (13, 14) along the stroke axis (15) in a tool-changing position in order for tool dies (11) to be inserted and removed and, starting from the tool-changing position, the tool die holder (10) is positionable by means of the tool drive (13, 14) along the stroke axis (15) away from the workpiece support (3) in accordance with the tool head height of a tool die (11) secured to the tool die holder (10).
  5. A machine tool according to any one of the preceding claims, characterised in that the tool drive (13, 14) comprises a tool punch drive associated with the tool punch holder (8) and a tool die drive associated with the tool die holder (10), by means of which the tool punch holder (8) and the tool die holder (10) are positionable relative to the workpiece support (3) along the stroke axis (15) in a mutually uncoupled manner.
  6. A machine tool according to any one of the preceding claims, characterised in that a numerical control unit (19) is provided which has control means (21) in order to control the positioning movements of the tool punch holder (8) on the basis of tool data of a tool punch (9) secured to the tool punch holder (8) which are stored in the numerical control unit, and which has control means (21) in order to control the positioning movements of the tool die holder (10) on the basis of tool data of a tool die (11) secured to the tool die holder (10) which are stored in the numerical control unit.
  7. A machine tool according to any one of the preceding claims, characterised in that processing devices, preferably forming bars (24, 29) or cutting edges, are provided on the workpiece side of the different-height tool heads (23, 28) of the tool punches (9) and the tool dies (11).
  8. A machine tool according to any one of the preceding claims, characterised in that the tool punches (9) and the tool dies (11) are associated with each other in pairs to form tools (12), and at least one tool (12) is in the form of a punching tool and/or in the form of a forming tool.
EP08003217A 2008-02-22 2008-02-22 Machine tool for cutting and/or forming plate-form workpieces Active EP2092994B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT08003217T ATE460238T1 (en) 2008-02-22 2008-02-22 MACHINE TOOL FOR CUTTING AND/OR FORMING PLATE-LIKE WORKPIECES
DE502008000434T DE502008000434D1 (en) 2008-02-22 2008-02-22 Machine tool for cutting and / or forming plate-like workpieces
EP08003217A EP2092994B1 (en) 2008-02-22 2008-02-22 Machine tool for cutting and/or forming plate-form workpieces
JP2009036514A JP5167165B2 (en) 2008-02-22 2009-02-19 Machine tool for cutting and / or deforming a plate-like workpiece
US12/390,601 US8201432B2 (en) 2008-02-22 2009-02-23 Plate workpiece processing with interchangeable tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08003217A EP2092994B1 (en) 2008-02-22 2008-02-22 Machine tool for cutting and/or forming plate-form workpieces

Publications (2)

Publication Number Publication Date
EP2092994A1 EP2092994A1 (en) 2009-08-26
EP2092994B1 true EP2092994B1 (en) 2010-03-10

Family

ID=39432834

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Application Number Title Priority Date Filing Date
EP08003217A Active EP2092994B1 (en) 2008-02-22 2008-02-22 Machine tool for cutting and/or forming plate-form workpieces

Country Status (5)

Country Link
US (1) US8201432B2 (en)
EP (1) EP2092994B1 (en)
JP (1) JP5167165B2 (en)
AT (1) ATE460238T1 (en)
DE (1) DE502008000434D1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102672033A (en) * 2012-06-08 2012-09-19 衡水益通金属制品有限责任公司 Multiple-hole piercing device for arc-shaped corrugated plate
CN103230975A (en) * 2013-05-13 2013-08-07 湖南同心干杉车身制造有限公司 Thin plate punching method and thin plate punching device
TW201514642A (en) * 2013-12-04 2015-04-16 Hon Hai Prec Ind Co Ltd System and method for optimizing processes
CN106623603B (en) * 2017-02-23 2017-10-24 新沂城北新区城市建设发展有限公司 A kind of plate drilling device of energy self-retaining
JP7144151B2 (en) 2018-02-07 2022-09-29 シチズン時計株式会社 electronic clock
CN109351845A (en) * 2018-10-17 2019-02-19 翁招娣 A kind of energy saving and environment friendly equipment of construction material processing

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Publication number Priority date Publication date Assignee Title
GB8810108D0 (en) * 1988-04-28 1988-06-02 British United Shoe Machinery Cutting press
NL8902274A (en) * 1989-09-12 1991-04-02 Brouwer & Co Machine PUNCHING MACHINE.
US5438521A (en) * 1994-03-10 1995-08-01 Finn-Power International, Inc. Apparatus and method for measuring and compensating the length of a punch tool
DE50303112D1 (en) * 2003-07-26 2006-06-01 Trumpf Werkzeugmaschinen Gmbh Machine tool with tool lifting drive
DE502004007062D1 (en) * 2004-08-09 2008-06-19 Trumpf Werkzeugmaschinen Gmbh Press with a device for detecting a mutual reference position of tool parts of a press tool
JP4916104B2 (en) * 2004-08-30 2012-04-11 村田機械株式会社 Punch press deburring tool
JP2006205199A (en) * 2005-01-27 2006-08-10 Calsonic Kansei Corp Pierce burring arrangement

Also Published As

Publication number Publication date
DE502008000434D1 (en) 2010-04-22
ATE460238T1 (en) 2010-03-15
JP2009195985A (en) 2009-09-03
US8201432B2 (en) 2012-06-19
US20090211328A1 (en) 2009-08-27
EP2092994A1 (en) 2009-08-26
JP5167165B2 (en) 2013-03-21

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