EP1600225B1 - Punching machine with electrical rotating- /lifting drive - Google Patents

Punching machine with electrical rotating- /lifting drive Download PDF

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Publication number
EP1600225B1
EP1600225B1 EP20040012523 EP04012523A EP1600225B1 EP 1600225 B1 EP1600225 B1 EP 1600225B1 EP 20040012523 EP20040012523 EP 20040012523 EP 04012523 A EP04012523 A EP 04012523A EP 1600225 B1 EP1600225 B1 EP 1600225B1
Authority
EP
European Patent Office
Prior art keywords
spindle
lifting
drive
rotary
drive motor
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
EP20040012523
Other languages
German (de)
French (fr)
Other versions
EP1600225A1 (en
Inventor
Werner Erlenmaier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Trumpf Werkzeugmaschinen SE and Co KG
Original Assignee
Trumpf Werkzeugmaschinen SE and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to DE200450007280 priority Critical patent/DE502004007280D1/en
Application filed by Trumpf Werkzeugmaschinen SE and Co KG filed Critical Trumpf Werkzeugmaschinen SE and Co KG
Priority to ES04012523T priority patent/ES2305611T3/en
Priority to EP20040012523 priority patent/EP1600225B1/en
Priority to AT04012523T priority patent/ATE396805T1/en
Priority to PL04012523T priority patent/PL1600225T3/en
Priority to CNB2005800172168A priority patent/CN100427236C/en
Priority to JP2007513797A priority patent/JP4705635B2/en
Priority to PCT/EP2005/005636 priority patent/WO2005118177A1/en
Publication of EP1600225A1 publication Critical patent/EP1600225A1/en
Priority to US11/563,582 priority patent/US7717021B2/en
Application granted granted Critical
Publication of EP1600225B1 publication Critical patent/EP1600225B1/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
    • B21D28/002—Drive of the tools
    • 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
    • Y10T483/00—Tool changing
    • Y10T483/17—Tool changing including machine tool or component
    • Y10T483/1733—Rotary spindle machine tool [e.g., milling machine, boring, machine, grinding machine, etc.]
    • Y10T483/179—Direct tool exchange between spindle and matrix
    • Y10T483/1793—Spindle comprises tool changer
    • Y10T483/1795—Matrix indexes selected tool to transfer position
    • 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
    • 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
    • Y10T83/8789—With simple revolving motion only
    • Y10T83/8794—Revolving tool moves through recess in work holder or cooperating 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
    • Y10T83/9411—Cutting couple type
    • Y10T83/9423—Punching tool
    • Y10T83/9428—Shear-type male 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 punching machine with a tool storage for a punching tool and with a rotary / lifting drive, by means of which the tool storage in the direction of a lifting axis to the working area of the punching machine back and forth and is rotatable about the lifting axis and the electric rotary drive motor, an electric Hubantriebsmotor and a motion-connected with the tool storage drive spindle comprises, wherein for moving the tool storage in the direction of the lifting axis a seated on the drive spindle Hubspindelmutter means of the Hubantriebsmotors relative to the drive spindle is rotatable and the drive spindle is displaceable in the direction of a spindle axis and wherein for rotation adjustment of the tool storage about the stroke axis about the spindle axis of the drive spindle rotatable driver by means of the rotary drive motor with driving the drive spindle is rotatable about the spindle axis.
  • Such a punching machine is disclosed in JP 04172133 A .
  • a rotary / lifting drive with two separate electric drive motors is provided for a tool storage. Both drive motors are arranged laterally next to a drive spindle, which in turn runs in the direction of a lifting axis of a tool storage of the known punching machine.
  • One of the electric drive motors serves as a lift drive motor and is connected for this purpose via a belt drive with a seated on the drive spindle Hubspindelmutter.
  • a belt drive is used to produce a drive connection between the second, provided as a rotary drive motor drive motor and a traversed by the drive spindle driver for the drive spindle.
  • the object is to enable a compact design of the rotary / lifting drive a punching machine and thus a compact design of the punching machine in total.
  • a compact design of the rotary / lifting drive and thus the entire machine is achieved by minimizing the number of required for the lifting movement and the rotational adjustment of the tool storage drive motors.
  • a single rotary / lifting drive motor is provided, which serves both for moving the tool mounting in the direction of the lifting axis and for rotational adjustment of the tool mounting about the lifting axis.
  • This dual function is possible
  • the rotary / lifting drive motor by the controllable switching device according to claim 2. This allows the driver for the drive spindle when needed with the rotary / Hubantriebsmotor to drive to connect or separate from the rotary / Hubantriebsmotor drivingly.
  • the rotary / lift drive motor drives the driver including the drive spindle about the spindle axis. Associated with this is the desired rotational adjustment of the tool mounting around the lifting axis.
  • the driver for the drive spindle and the rotary / Hubantriebsmotor drivingly separated from each other, so the rotary / Hubantriebsmotor drives only the Hubspindelmutter, which then causes a displacement of the drive spindle in the direction of the spindle axis and connected thereto a movement of the tool storage in the direction of the lifting axis becomes.
  • connection made by means of the claimed coupling slide between the motor-side Hubspindelmutter and the driver for the drive spindle can be of different types. In question, for example, comes a non-positive connection as well as a positive connection.
  • a rotation lock is provided in a further embodiment of the invention for the drive spindle, which prevents a drive shaft rotation about the spindle axis at driving separation of the driver of the rotary / Hubantriebsmotor.
  • the coexistent drive connection of Hubspindelmutter and rotary / Hubantriebsmotor thus causes an exclusively axial movement of the drive spindle and thus a lifting movement of the tool storage without associated rotary adjustment movement.
  • the rotation lock for the drive spindle for simplicity, an anti-rotation slide, by means of which the driver for the drive spindle and thus also the drive spindle itself set optionally against rotation about the spindle axis or release for such rotation.
  • a punching machine 1 has a C-shaped machine frame 2 with an upper frame leg 3 and a lower frame leg. 4
  • an electric rotary / lifting drive 5 for a punching tool in the form of a punch 6 or for a provided with the punch 6 tool bearing 7 is attached.
  • the tool bearing 7 is in common with the punch 6 in the direction of a lifting axis 8 rectilinearly movable and adjustable in the direction of a double arrow 9 about the lifting axis 8. Movements in the direction of the lifting axis 8 are of the tool bearing 7 and the punch 6 at the working strokes for machining workpieces and at the work strokes subsequent return strokes executed.
  • a rotary adjustment of the tool bearing 7 and the punch 6 is made to change the rotational position of the punch 6 with respect to the lifting axis 8.
  • the punch 6 interacts with a punching die, not shown, in the form of a punching die.
  • a punching die not shown, in the form of a punching die.
  • This is integrated in the usual way in a workpiece table 10, which in turn is mounted on the lower frame leg 4 of the punching machine 1.
  • the required relative to the punch 6 and the punching die in the workpiece machining relative movements of the sheet in question are carried out by means of a housed in a throat space 11 of the machine frame 2 coordinate guide 12 of conventional design.
  • the rotary / lifting drive 5 in the interior of a drive housing 13 comprises a switchable in its rotational direction electrical rotary / lifting drive motor 14.
  • the rotary / lifting drive motor 14 is a torque motor with a housing fixed stator 15th and a rotor 16 rotating around the lifting axis 8 within the stator 15.
  • the rotor 16 of the rotary / lifting drive motor 14 is connected directly and thus gearless to a lifting spindle nut 17. This sits on a drive spindle 18.
  • a spindle axis 19 of the drive spindle 18 coincides with the lifting axis 8.
  • the Hubspindelmutter 17 and the stator 15 of the rotary / Hubantriebsmotors 14 are arranged with mutual overlap.
  • the lifting spindle nut 17 has a flange 20.
  • a conventional rolling bearing 21 is provided for rotary mounting of Hubspindelmutter 17 to the drive housing 13.
  • a first detection device 22 By means of a first detection device 22, the direction of rotation and the angle of rotation of the lifting spindle nut 17 revolving around the lifting axis 8 or the spindle axis 19 are recorded.
  • the Hubspindelmutter 17 forms a spindle drive 23 which is executed in the example shown as a ball screw.
  • the axial projection 24 has a circular cylindrical basic body, on which over a partial length of the axial projection 24 radial wings 25 protrude. These have proven Fig. 5 a substantially rectangular cross-section and are received in axial guide grooves 26 of a driver 27.
  • the driver 27 surrounds the axial projection 24 and the drive spindle 18 concentrically. Its axial guide grooves 26 form in cooperation with the radial wings 25 of the axial
  • a conventional rolling bearing 29 assumes the pivotal mounting of the driver 27 and the axial projection 24 and the drive spindle 18 to the drive housing 13.
  • a second detection means 30 serves to detect the Rotary position of the axial projection 24 and the provided on this tool bearing 7 and the punch 6 with respect to the lifting axis. 8
  • the driver 27 may be selectively connected to the rotary / lifting drive motor 14 drivingly separated or driven by the rotary / lifting drive motor 14.
  • the controllable switching device 31 comprises a coupling / anti-rotation slide 32. This is guided on the outside of the driver 27 in the axial direction slidably.
  • To the lifting axis 8 of the clutch / anti-rotation slide 32 by means of feathers against rotation on the driver 27 is supported.
  • For the axial displacement of the coupling / anti-rotation slide 32 is a plurality of actuation slides 33, which in turn are movably guided on the drive housing 13 in the direction of the lifting axis 8 and have a common pneumatic drive.
  • the coupling / anti-rotation slide 32 engages with the free end of a flange 34 in the actuating slide 33 a.
  • a radial flange surface 35 of the flange 34 on the clutch / anti-rotation slide 32 is opposed to a radial flange surface 36 on the flange 20 of Hubspindelmutter 17.
  • the flange 34 of the coupling / anti-rotation slide 32 is provided with a further radial flange surface 37. This is assigned a contact surface 38 on the drive housing 13th
  • Fig. 2 shows the electric rotary / lifting drive 5 in the punching workpiece machining associated operating state.
  • Hubspindelmutter 17 is rotated in the respective direction of rotation about the lifting axis 8 and the spindle axis 19.
  • the clutch / anti-rotation slide 32 of the controllable switching device 31 is moved by means of the actuating slide 33 in its lower end position.
  • the driver 27 is thus drivingly separated from the rotary / lifting drive motor 14.
  • the radial flange surface 37 on the clutch / anti-rotation slide 32 is supported on the contact surface 38 of the drive housing 13.
  • normal force of the clutch / anti-rotation slide 32 is fixed to the drive housing 13 against rotation about the lifting axis 8.
  • the coupling / anti-rotation slide 32 With the coupling / anti-rotation slide 32, the driver 27 and the rotationally mounted on this axial projection 24 and the integrally formed with this drive spindle 18 are secured against rotation about the lifting axis 8. Accordingly, the coupling / anti-rotation slide 32 forms in cooperation with the driver 27 and the drive housing 13 a rotation lock 39 for the drive spindle 18.
  • the drive housing 13 serves as a driver abutment.
  • the Hubspindelmutter 17 shifts jointly with the axial projection 24, the tool bearing 7 provided thereon and in the tool storage Depending on the direction of rotation of the Hubspindelmutter 17, the tool storage 7 and the punch 6 are lowered with a working stroke in the direction of the workpiece to be machined or following a working stroke with a return stroke against the machined Workpiece retracted.
  • the electric rotary / lifting drive 5 is then transferred when the rotational position of the tool bearing 7 and the punch 6 is to be changed with respect to the lifting axis 8.
  • the driver 27 and the rotary / lifting drive motor 14 via the clutch / anti-rotation slide 32 of the controllable switching device 31 drivingly connected to each other.
  • the coupling / anti-rotation slide 32 is displaced by means of the actuating slide 33 in an axial position, in the taking of which he is pressed with its radial flange surface 35 to the radial flange surface 36 of Hubspindelmutter 17.
  • the first detection device 22 serves for the controlled execution of the working strokes and the return strokes of the punch 6 in the direction of the lifting axis 8.
  • the second detection device 30 serves to control the rotational adjustment the punch 6 about the lifting axis 8.
  • the rotary / lifting drive motor 14 functions both as a rotary drive motor and as a lift drive motor. With the rotary adjustment of the punch 6, a corresponding rotational adjustment of the cooperating with the punch 6 punching die is made.
  • An electric rotary / lifting drive 55 with two separate drive motors shows Fig. 6 ,
  • the electric rotary / lifting drive 55 can be used on the punching machine 1 instead of the electric rotary / lifting drive 5.
  • the rotary electric / lifting drive 55 includes a rotary drive motor 64a and a lift drive motor 64b. Both motors are torque motors.
  • the rotary drive motor 64a has a stator 65a and a rotor 66a.
  • the rotor 66a is directly connected to a driver 77 and runs in operation of the rotary drive motor 64a jointly with the driver 77 to the lifting axis 8 of the rotary / lifting drive 55 to.
  • the driver 77 supports an integrally formed with a drive spindle 68 axial shoulder 74. Notwithstanding the axial projection 24 according to the FIGS. 2 to 5 is the axial shoulder 74 after Fig. 6 designed as a hollow cylinder.
  • the axial projection 74 engages in axial guide grooves 76 on the driver 77.
  • the radial vanes 75 on the axial extension 74 and the axial guide grooves 76 on the tang 77 form an axial guide 78 for the axial projection 74 and the integrally formed therewith drive spindle 68th
  • a Hubspindelmutter 67 On the drive spindle 68 sits a Hubspindelmutter 67. This is rotatable about the lifting axis 8 and stored immovably in the direction of the lifting axis 8. Without the interposition of a transmission, the Hubspindelmutter 67 is connected to a rotor 66b of the Hubantriebsmotors 64b. Associated with the rotor 66b is a stator 65b of the lifting drive motor 64b. A spindle axis 19 of the drive spindle 68 coincides with the lifting axis 8. Notwithstanding the drive spindle 18 according to the FIGS. 2 to 5 is the drive spindle 68 after Fig. 6 designed as a hollow spindle.
  • a tool bearing 7 with a punch 6 is arranged on a plunger 81, which in turn is fixed in the axial receptacle of the drive spindle 68.
  • the Hubspindelmutter 67 and the drive spindle 68 form a spindle drive 73, which as well as the spindle drive 23 after the FIGS. 2 to 5 designed as a ball screw.
  • the Hubspindelmutter 67 and the stator 65 b of the Hubantriebsmotors 64 b are arranged with mutual overlap. The same applies to the driver 77 and the stator 65a of the rotary drive motor 64a.
  • the Hubspindelmutter circulating jointly with the rotor 66b of the Hubantriebsmotors 64b 67 drives the drive spindle 68 in the direction of the lifting axis 8 or the spindle axis 19.
  • the drive spindle 68 and with this the tool storage 7 is lowered with the punch 6 to the workpiece to be machined or withdrawn from the machined workpiece.
  • the rotary drive motor 64a is switched off during punching operation of the electric rotary / lifting drive 55.
  • the rotor 66a is blocked in the direction of rotation when the rotary drive motor 64a is turned against rotation about the lifting axis 8.
  • the driver 77 which is positively supported on the rotor 66a.
  • the switched-off rotary drive motor 64a together with the driver 77, forms an anti-rotation device for the drive spindle 68 displacing in the axial direction.
  • the functions of the electric rotary / lifting drive 55 are numerically controlled. As components of the numerical control, i.a. not shown in detail or explained detection devices for receiving rotational speed or rotation angle and direction of rotation of Hubspindelmutter 67 and the drive spindle 68 is provided.
  • Fig. 7 shows an electric rotary / lifting drive 85 with drive motors 94a, 94b designed as torque motors.
  • the drive motor 94a comprises a stator 95a and a rotor 96a, the drive motor 94b a stator 95b and a rotor 96b.
  • the rotor 96a is directly connected to a Hubspindelmutter 97a, the rotor 96b with a Hubspindelmutter 97b.
  • the Hubspindelmutter 97 a sitting on a drive spindle 98 a, the Hubspindelmutter 97 b on a drive spindle 98 b.
  • the Hubspindelmuttern 97a, 97b and the associated motors 95a, 95b of the drive motors 94a, 94b are arranged with mutual axial Matterdekkung.
  • Both drive spindles 98a, 98b are designed as hollow spindles. In their interior, the drive spindles 98a, 98b receive a plunger 111, on the workpiece side end of which the tool bearing 7 with the punch 6 is provided. The drive spindles 98a, 98b are connected to each other via the plunger 111 to form a structural unit. A lifting axis 8 of the rotary / lifting drive 85 coincides with a common spindle axis 19 of the drive spindles 98a, 98b.
  • the Hubspindelmutter 97a forms together with the drive spindle 98a a spindle drive 103a, the Hubspindelmutter 97b with the drive spindle 98b a spindle drive 103b.
  • the spindle drives 103a, 103b have opposing threads, but are otherwise identical.
  • the two drive motors 94a, 94b are operated at the same speed but in opposite directions.
  • the Hubspindelmutter 97a and the drive motor 94a act as a rotation lock for the drive spindle 98b
  • the Hubspindelmutter 97b and the drive motor 94b act as a rotation lock for the drive spindle 98a.
  • the drive motors 94a, 94b operated with the same speed and identical direction of rotation. This results in a joint rotational movement of Hubspindelmutter 97 a and the Drive spindle 98a and the Hubspindelmutter 97b and the drive spindle 98b.
  • a relative rotational movement between the Hubspindelmutter 97a and the drive spindle 98a and the Hubspindelmutter 97b and the drive spindle 98b is omitted.
  • the Hubspindelmuttern 97a, 97b act as a driver for the drive spindles 98a, 98b.
  • the drive motors 94a, 94b form rotary drive motors or lifting drive motors.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Press Drives And Press Lines (AREA)
  • Punching Or Piercing (AREA)

Abstract

To move the tool bearing (7) in the direction of the lifting axis (8) and for rotating the tool bearing about the lifting axis, a rotary/lifting drive motor (14) is provided, which can be operated both as a rotary drive motor and a lifting drive motor. A controllable indexing device is used to connect or separate the motor to a driver (27).

Description

Die Erfindung betrifft eine Stanzmaschine mit einer Werkzeuglagerung für ein Stanzwerkzeug sowie mit einem Dreh-/Hubantrieb, mittels dessen die Werkzeuglagerung in Richtung einer Hubachse zu dem Arbeitsbereich der Stanzmaschine hin und zurück bewegbar und um die Hubachse dreheinstellbar ist und der einen elektrischen Drehantriebsmotor, einen elektrischen Hubantriebsmotor sowie eine mit der Werkzeuglagerung bewegungsverbundene Antriebsspindel umfasst, wobei zur Bewegung der Werkzeuglagerung in Richtung der Hubachse eine auf der Antriebsspindel aufsitzende Hubspindelmutter mittels des Hubantriebsmotors relativ zu der Antriebsspindel drehbar und die Antriebsspindel in Richtung einer Spindelachse verlagerbar ist und wobei zur Dreheinstellung der Werkzeuglagerung um die Hubachse ein um die Spindelachse der Antriebsspindel drehbarer Mitnehmer mittels des Drehantriebsmotors unter Mitnahme der Antriebsspindel um die Spindelachse drehbar ist.The invention relates to a punching machine with a tool storage for a punching tool and with a rotary / lifting drive, by means of which the tool storage in the direction of a lifting axis to the working area of the punching machine back and forth and is rotatable about the lifting axis and the electric rotary drive motor, an electric Hubantriebsmotor and a motion-connected with the tool storage drive spindle comprises, wherein for moving the tool storage in the direction of the lifting axis a seated on the drive spindle Hubspindelmutter means of the Hubantriebsmotors relative to the drive spindle is rotatable and the drive spindle is displaceable in the direction of a spindle axis and wherein for rotation adjustment of the tool storage about the stroke axis about the spindle axis of the drive spindle rotatable driver by means of the rotary drive motor with driving the drive spindle is rotatable about the spindle axis.

Eine derartige Stanzmaschine ist offenbart in JP 04172133 A . Im Falle des Standes der Technik ist für eine Werkzeuglagerung ein Dreh-/Hubantrieb mit zwei separaten elektrischen Antriebsmotoren vorgesehen. Beide Antriebsmotoren sind seitlich neben einer Antriebsspindel angeordnet, die ihrerseits in Richtung einer Hubachse einer Werkzeuglagerung der vorbekannten Stanzmaschine verläuft. Einer der elektrischen Antriebsmotoren dient als Hubantriebsmotor und ist zu diesem Zweck über einen Riementrieb mit einer auf der Antriebsspindel aufsitzenden Hubspindelmutter verbunden. Ebenfalls ein Riementrieb dient zur Herstellung einer Antriebsverbindung zwischen dem zweiten, als Drehantriebsmotor vorgesehenen Antriebsmotor und einem von der Antriebsspindel durchsetzten Mitnehmer für die Antriebsspindel.Such a punching machine is disclosed in JP 04172133 A , In the case of the prior art, a rotary / lifting drive with two separate electric drive motors is provided for a tool storage. Both drive motors are arranged laterally next to a drive spindle, which in turn runs in the direction of a lifting axis of a tool storage of the known punching machine. One of the electric drive motors serves as a lift drive motor and is connected for this purpose via a belt drive with a seated on the drive spindle Hubspindelmutter. Also, a belt drive is used to produce a drive connection between the second, provided as a rotary drive motor drive motor and a traversed by the drive spindle driver for the drive spindle.

Ausgehend von dem beschriebenen Stand der Technik liegt der anmeldungsgemäßen Erfindung die Aufgabe zugrunde, eine kompakte Bauweise des Dreh-/Hubantriebes einer Stanzmaschine und somit eine kompakte Bauweise der Stanzmaschine ingesamt zu ermöglichen.Based on the described prior art, the invention according to the invention the object is to enable a compact design of the rotary / lifting drive a punching machine and thus a compact design of the punching machine in total.

Erfindungsgemäß gelöst wird diese Aufgabe durch die Merkmalskombination von Patentanspruch 1 sowie durch die Merkmalskombination von Patentanspruch 2.This object is achieved according to the invention by the combination of features of claim 1 and by the combination of features of claim 2.

Im Falle der Stanzmaschine nach Patentanspruch 1 liegt der Spindeltrieb zur Hubbewegung der Werkzeuglagerung in radialer Richtung innerhalb des Stators des Hubantriebsmotors. Zusätzlich oder alternativ ist der Mitnehmer zur Dreheinstellung der Werkzeuglagerung radial innerhalb des Stators des Drehantriebsmotors angeordnet. In radialer Richtung der Antriebsspindel baut der erfindungsgemäße Dreh-/Hubantrieb folglich verhältnismäßig klein. Ebenfalls relativ geringe Abmessungen ergeben sich für den erfindungsgemäßen Dreh-/Hubantrieb in axialer Richtung der Antriebsspindel. Grund hierfür ist die in Patentanspruch 1 beschriebene gegenseitige axiale Überdeckung der Hubspindelmutter und des Stators des Hubantriebsmotors und/oder des Mitnehmers und des Stators des Drehantriebsmotors.In the case of the punching machine according to claim 1 of the spindle drive for lifting movement of the tool mounting in the radial direction within the stator of the Hubantriebsmotors. Additionally or alternatively, the driver for rotational adjustment of the tool storage is arranged radially within the stator of the rotary drive motor. In the radial direction of the drive spindle of the rotary / lifting drive according to the invention thus builds relatively small. Also relatively small dimensions result for the rotary / lifting drive according to the invention in the axial direction of the drive spindle. This is due to the mutual axial overlap of the Hubspindelmutter and the stator of the Hubantriebsmotors and / or the driver and the stator of the rotary drive motor described in claim 1.

An der Stanzmaschine nach Patentanspruch 2 wird eine kompakte Bauweise des Dreh-/Hubantriebes und somit der Gesamtmaschine durch Minimierung der Anzahl der für die Hubbewegung sowie die Dreheinstellung der Werkzeuglagerung benötigten Antriebsmotoren erreicht. Erfindungsgemäß ist ein einzelner Dreh-/Hubantriebsmotor vorgesehen, der sowohl zur Bewegung der Werkzeuglagerung in Richtung der Hubachse als auch zur Dreheinstellung der Werkzeuglagerung um die Hubachse dient. Ermöglicht wird diese Doppelfunktion des Dreh-/Hubantriebsmotors durch die steuerbare Schalteinrichtung nach Patentanspruch 2. Diese gestattet es, den Mitnehmer für die Antriebsspindel bei Bedarf mit dem Dreh-/Hubantriebsmotor antriebsmäßig zu verbinden oder von dem Dreh-/Hubantriebsmotor antriebsmäßig zu trennen. In dem erstgenannten Fall treibt der Dreh-/Hubantriebsmotor den Mitnehmer einschließlich der Antriebsspindel um die Spindelachse an. Damit verbunden ist die gewünschte Dreheinstellung der Werkzeuglagerung um die Hubachse. Sind der Mitnehmer für die Antriebsspindel und der Dreh-/Hubantriebsmotor antriebsmäßig voneinander getrennt, so treibt der Dreh-/Hubantriebsmotor lediglich die Hubspindelmutter an, wodurch dann eine Verlagerung der Antriebsspindel in Richtung der Spindelachse und damit verbunden eine Bewegung der Werkzeuglagerung in Richtung der Hubachse bewirkt wird.At the punching machine according to claim 2, a compact design of the rotary / lifting drive and thus the entire machine is achieved by minimizing the number of required for the lifting movement and the rotational adjustment of the tool storage drive motors. According to the invention, a single rotary / lifting drive motor is provided, which serves both for moving the tool mounting in the direction of the lifting axis and for rotational adjustment of the tool mounting about the lifting axis. This dual function is possible The rotary / lifting drive motor by the controllable switching device according to claim 2. This allows the driver for the drive spindle when needed with the rotary / Hubantriebsmotor to drive to connect or separate from the rotary / Hubantriebsmotor drivingly. In the former case, the rotary / lift drive motor drives the driver including the drive spindle about the spindle axis. Associated with this is the desired rotational adjustment of the tool mounting around the lifting axis. Are the driver for the drive spindle and the rotary / Hubantriebsmotor drivingly separated from each other, so the rotary / Hubantriebsmotor drives only the Hubspindelmutter, which then causes a displacement of the drive spindle in the direction of the spindle axis and connected thereto a movement of the tool storage in the direction of the lifting axis becomes.

Besondere Ausführungsarten der Stanzmaschinen nach den unabhängigen Patentansprüchen 1 und 2 ergeben sich aus den abhängigen Patentansprüchen 3 bis 10.Particular embodiments of the punching machines according to the independent claims 1 and 2 emerge from the dependent claims 3 to 10.

Im Falle der Erfindungsbauart nach Patentanspruch 3 ist mit konstruktiv einfachen Mitteln dafür gesorgt, dass die zur Dreheinstellung der Werkzeuglagerung auszuführende Drehbewegung der Antriebsspindel einhergeht mit einer entsprechenden Drehbewegung der auf der Antriebsspindel aufsitzenden Hubspindelmutter. Infolgedessen kann die Dreheinstellung der Werkzeuglagerung unter Vermeidung einer Relativ-Drehbewegung von Hubspindelmutter und Antriebsspindel und somit unter Vermeidung einer Bewegung der Werkzeuglagerung in Richtung der Hubachse vorgenommen werden.In the case of Erfindungsbauart according to claim 3 is ensured with structurally simple means that the rotational adjustment of the tool bearing to be executed rotational movement of the drive spindle is accompanied by a corresponding rotational movement of the seated on the drive spindle Hubspindelmutter. As a result, the rotational adjustment of the tool storage under Avoiding a relative rotational movement of Hubspindelmutter and drive spindle and thus be made while avoiding movement of the tool storage in the direction of the lifting axis.

Eine im Falle der Erfindung insbesondere aufgrund ihrer Funktionssicherheit bevorzugte Möglichkeit zur antriebsmäßigen Verbindung oder Trennung des Dreh-/Hubantriebsmotors einerseits sowie des Mitnehmers für die Antriebsspindel andererseits ist in Patentanspruch 4 beschrieben. Die mittels des anspruchsgemäßen Kupplungsschiebers hergestellte Verbindung zwischen der motorseitigen Hubspindelmutter und dem Mitnehmer für die Antriebsspindel kann unterschiedlicher Art sein. In Frage kommt beispielsweise eine kraftschlüssige Verbindung ebenso wie eine formschlüssige Verbindung.A preferred in the case of the invention in particular due to their reliability possibility for driving connection or disconnection of the rotary / Hubantriebsmotors on the one hand and the driver for the drive spindle on the other hand is described in claim 4. The connection made by means of the claimed coupling slide between the motor-side Hubspindelmutter and the driver for the drive spindle can be of different types. In question, for example, comes a non-positive connection as well as a positive connection.

Ausweislich Patentanspruch 5 ist in weiterer Ausgestaltung der Erfindung für die Antriebsspindel eine Drehsicherung vorgesehen, die bei antriebsmäßiger Trennung des Mitnehmers von dem Dreh-/Hubantriebsmotor eine Drehung der Antriebsspindel um die Spindelachse verhindert. Die gleichzeitig bestehende Antriebsverbindung von Hubspindelmutter und Dreh-/Hubantriebsmotor bewirkt folglich eine ausschließlich axiale Bewegung der Antriebsspindel und somit eine Hubbewegung der Werkzeuglagerung ohne damit verbundene Dreh-Einstellbewegung.As shown in claim 5, a rotation lock is provided in a further embodiment of the invention for the drive spindle, which prevents a drive shaft rotation about the spindle axis at driving separation of the driver of the rotary / Hubantriebsmotor. The coexistent drive connection of Hubspindelmutter and rotary / Hubantriebsmotor thus causes an exclusively axial movement of the drive spindle and thus a lifting movement of the tool storage without associated rotary adjustment movement.

Gemäß Patentanspruch 6 umfasst die Drehsicherung für die Antriebsspindel der Einfachheit halber einen Drehsicherungsschieber, mittels dessen sich der Mitnehmer für die Antriebsspindel und somit auch die Antriebsspindel selbst wahlweise gegen Drehung um die Spindelachse festlegen oder für eine derartige Drehung freigeben lassen.According to claim 6, the rotation lock for the drive spindle for simplicity, an anti-rotation slide, by means of which the driver for the drive spindle and thus also the drive spindle itself set optionally against rotation about the spindle axis or release for such rotation.

Im Interesse einer konstruktiv möglichst einfachen Gestaltung der Gesamtanordnung, insbesondere im Interesse einer Minimierung der Anzahl der benötigten Einzelteile ist im Falle einer weiteren bevorzugten Erfindungsbauart vorgesehen, dass ein Kupplungs-/Drehsicherungsschieber sowohl die antriebsmäßige Verbindung oder Trennung des Dreh-/Hubantriebsmotors und des Mitnehmers für die Antriebsspindel als auch die Herstellung oder Aufhebung einer Drehsicherung der Antriebsspindel übernimmt (Patentanspruch 7).In the interest of a structurally simple design of the overall arrangement, in particular in the interest of minimizing the number of items required is provided in the case of another preferred Erfindungsbauart that a coupling / anti-rotation slide both the driving connection or separation of the rotary / Hubantriebsmotors and the driver for the drive spindle as well as the production or cancellation of a rotation of the drive spindle takes over (claim 7).

Im Falle der erfindungsgemäßen Stanzmaschinen nach den Patentansprüchen 8 und 9 sind an einem Dreh-/Hubantrieb mit einem die Funktionen eines Drehantriebsmotors sowie eines Hubantriebsmotors in sich vereinenden Dreh-/Hubantriebsmotor die eingangs zu Patentanspruch 1 erläuterten konstruktiven Maßnahmen getroffen. Eine besonders kompakte Antriebsbauweise ist die Folge.In the case of the punching machines according to the invention according to claims 8 and 9, the constructive measures explained in the introduction to claim 1 are met on a rotary / lifting drive with a rotary / lifting drive motor combining the functions of a rotary drive motor and a lifting drive motor. A particularly compact drive design is the result.

Ausweislich Patentanspruch 10 wird im Falle der Erfindung als Hubantriebsmotor und/oder als Drehantriebsmotor und/oder als Dreh-/Hubantriebsmotor ein Torque-Motor bevorzugt. Diese Motorenbauart gestattet es, auch hohe Drehmomente ohne Einbauraum benötigende Zwischengetriebe zu übertragen.As shown in claim 10 is preferred in the case of the invention as a lift drive motor and / or as a rotary drive motor and / or as a rotary / Hubantriebsmotor a torque motor. This engine design makes it possible to transmit even high torques without installation space requiring intermediate gear.

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

Fig. 1
eine Stanzmaschine mit einer ersten Bauart eines elektrischen Dreh-/Hubantriebes für ein Stanzoberwerkzeug in der teilgeschnittenen Seitenansicht,
Fig. 2
den Dreh-/Hubantrieb gemäß Fig. 1 in einem ersten Betriebszustand,
Fig. 3
den Dreh-/Hubantrieb gemäß den Fign. 1 und 2 in einem zweiten Betriebszustand,
Fig. 4
einen Schnitt mit einer in Fig. 2 senkrecht zu der Zeichenebene und entlang der Linie IV-IV verlaufenden Schnittebene,
Fig. 5
einen Schnitt mit einer in Fig. 2 senkrecht zu der Zeichenebene und entlang der Linie V-V verlaufenden Schnittebene,
Fig. 6
eine zweite Bauart eines elektrischen Dreh-/Hubantriebes für ein Stanzoberwerkzeug einer Stanzmaschine und
Fig. 7
eine dritte Bauart eines elektrischen Dreh-/Hubantriebes für ein Stanzoberwerkzeug einer Stanzmaschine.
The invention will be explained in more detail with reference to schematic representations of exemplary embodiments. Show it:
Fig. 1
a punching machine with a first type of electric rotary / lifting drive for a punching top tool in the partially sectioned side view,
Fig. 2
according to the rotary / lifting drive Fig. 1 in a first operating state,
Fig. 3
the rotary / lifting drive according to FIGS. 1 and 2 in a second operating state,
Fig. 4
a cut with a in Fig. 2 perpendicular to the plane of the drawing and along the line IV-IV extending cutting plane,
Fig. 5
a cut with a in Fig. 2 perpendicular to the plane of the drawing and along the line VV extending cutting plane,
Fig. 6
a second type of electrical rotary / lifting drive for a punching tool a punching machine and
Fig. 7
a third type of electric rotary / lifting drive for a punching top tool a punching machine.

Ausweislich Fig. 1 besitzt eine Stanzmaschine 1 ein C-förmiges Maschinengestell 2 mit einem oberen Gestellschenkel 3 und einem unteren Gestellschenkel 4.evidenced 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

An dem freien Ende des oberen Gestellschenkels 3 ist ein elektrischer Dreh-/Hubantrieb 5 für ein Stanzwerkzeug in Form eines Stanzstempels 6 bzw. für eine mit dem Stanzstempel 6 versehene Werkzeuglagerung 7 angebracht. Mittels des Dreh-/Hubantriebes 5 ist die Werkzeuglagerung 7 gemeinschaftlich mit dem Stanzstempel 6 in Richtung einer Hubachse 8 geradlinig bewegbar und in Richtung eines Doppelpfeils 9 um die Hubachse 8 dreheinstellbar. Bewegungen in Richtung der Hubachse 8 werden von der Werkzeuglagerung 7 bzw. dem Stanzstempel 6 bei den Arbeitshüben zur Bearbeitung von Werkstücken sowie bei sich an die Arbeitshübe anschließenden Rückhüben ausgeführt. Eine Dreheinstellung der Werkzeuglagerung 7 bzw. des Stanzstempels 6 wird zur Änderung der Drehstellung des Stanzstempels 6 bezüglich der Hubachse 8 vorgenommen.At the free end of the upper frame leg 3, an electric rotary / lifting drive 5 for a punching tool in the form of a punch 6 or for a provided with the punch 6 tool bearing 7 is attached. By means of the rotary / lifting drive 5, the tool bearing 7 is in common with the punch 6 in the direction of a lifting axis 8 rectilinearly movable and adjustable in the direction of a double arrow 9 about the lifting axis 8. Movements in the direction of the lifting axis 8 are of the tool bearing 7 and the punch 6 at the working strokes for machining workpieces and at the work strokes subsequent return strokes executed. A rotary adjustment of the tool bearing 7 and the punch 6 is made to change the rotational position of the punch 6 with respect to the lifting axis 8.

Bei der Werkstückbearbeitung, im gezeigten Beispielsfall bei der stanzenden Bearbeitung von nicht im Einzelnen dargestellten Blechen, wirkt der Stanzstempel 6 mit einem nicht gezeigten Stanzunterwerkzeug in Form einer Stanzmatrize zusammen. Diese ist in gewohnter Weise in einen Werkstücktisch 10 integriert, der seinerseits auf dem unteren Gestellschenkel 4 der Stanzmaschine 1 gelagert ist. Die bei der Werkstückbearbeitung erforderlichen Relativbewegungen des betreffenden Bleches gegenüber dem Stanzstempel 6 und der Stanzmatrize werden mittels einer in einem Rachenraum 11 des Maschinengestells 2 untergebrachten Koordinatenführung 12 üblicher Bauart ausgeführt.In the workpiece processing, in the example shown in the case of punching processing of sheets not shown in detail, the punch 6 interacts with a punching die, not shown, in the form of a punching die. This is integrated in the usual way in a workpiece table 10, which in turn is mounted on the lower frame leg 4 of the punching machine 1. The required relative to the punch 6 and the punching die in the workpiece machining relative movements of the sheet in question are carried out by means of a housed in a throat space 11 of the machine frame 2 coordinate guide 12 of conventional design.

Wie den Fign. 2 bis 5 im Detail entnommen werden kann, umfasst der Dreh-/Hubantrieb 5 im Innern eines Antriebsgehäuses 13 einen in seiner Drehrichtung umschaltbaren elektrischen Dreh-/Hubantriebsmotor 14. Bei dem Dreh-/Hubantriebsmotor 14 handelt es sich um einen Torque-Motor mit einem gehäusefesten Stator 15 sowie einem innerhalb des Stators 15 um die Hubachse 8 umlaufenden Rotor 16. Der Rotor 16 des Dreh-/Hubantriebsmotors 14 ist unmittelbar und somit getriebelos mit einer Hubspindelmutter 17 verbunden. Diese sitzt auf einer Antriebsspindel 18 auf.Like that FIGS. 2 to 5 can be removed in detail, the rotary / lifting drive 5 in the interior of a drive housing 13 comprises a switchable in its rotational direction electrical rotary / lifting drive motor 14. The rotary / lifting drive motor 14 is a torque motor with a housing fixed stator 15th and a rotor 16 rotating around the lifting axis 8 within the stator 15. The rotor 16 of the rotary / lifting drive motor 14 is connected directly and thus gearless to a lifting spindle nut 17. This sits on a drive spindle 18.

Eine Spindelachse 19 der Antriebsspindel 18 fällt mit der Hubachse 8 zusammen. In axialer Richtung sind die Hubspindelmutter 17 und der Stator 15 des Dreh-/Hubantriebsmotors 14 mit gegenseitiger Überdeckung angeordnet. An ihrem zu der Werkzeuglagerung 7 hin weisenden axialen Ende weist die Hubspindelmutter 17 einen Flansch 20 auf. Zur Drehlagerung der Hubspindelmutter 17 an dem Antriebsgehäuse 13 ist ein herkömmliches Wälzlager 21 vorgesehen. Mittels einer ersten Erfassungseinrichtung 22 werden Drehrichtung und Drehwinkel der um die Hubachse 8 bzw. die Spindelachse 19 umlaufenden Hubspindelmutter 17 aufgenommen. Gemeinsam mit der Antriebsspindel 18 bildet die Hubspindelmutter 17 einen Spindeltrieb 23, der im gezeigten Beispielsfall als Kugelgewindetrieb ausgeführt ist.A spindle axis 19 of the drive spindle 18 coincides with the lifting axis 8. In the axial direction, the Hubspindelmutter 17 and the stator 15 of the rotary / Hubantriebsmotors 14 are arranged with mutual overlap. At its axial end facing the tool bearing 7, the lifting spindle nut 17 has a flange 20. For rotary mounting of Hubspindelmutter 17 to the drive housing 13, a conventional rolling bearing 21 is provided. By means of a first detection device 22, the direction of rotation and the angle of rotation of the lifting spindle nut 17 revolving around the lifting axis 8 or the spindle axis 19 are recorded. Together with the drive spindle 18, the Hubspindelmutter 17 forms a spindle drive 23 which is executed in the example shown as a ball screw.

An die Antriebsspindel 18 schließt sich zu der Werkzeuglagerung 7 hin ein mit der Antriebsspindel 18 einstückig ausgebildeter axialer Ansatz 24 an. Der axiale Ansatz 24 besitzt einen kreiszylindrischen Grundkörper, an welchem über eine Teillänge des axialen Ansatzes 24 radiale Flügel 25 vorstehen. Diese besitzen ausweislich Fig. 5 einen im Wesentlichen rechteckförmigen Querschnitt und sind in axialen Führungsnuten 26 eines Mitnehmers 27 aufgenommen.To the drive spindle 18 is connected to the tool bearing 7 through an integrally formed with the drive spindle 18 axial projection 24 at. The axial projection 24 has a circular cylindrical basic body, on which over a partial length of the axial projection 24 radial wings 25 protrude. These have proven Fig. 5 a substantially rectangular cross-section and are received in axial guide grooves 26 of a driver 27.

Der Mitnehmer 27 umgibt den axialen Ansatz 24 bzw. die Antriebsspindel 18 konzentrisch. Seine axialen Führungsnuten 26 bilden im Zusammenwirken mit den radialen Flügeln 25 des axialen Ansatzes 24 eine Axialführung 28 für den axialen Ansatz 24 und die damit einstückig ausgebildete Antriebsspindel 18. Ein herkömmliches Wälzlager 29 übernimmt die Drehlagerung des Mitnehmers 27 sowie des axialen Ansatzes 24 und der Antriebsspindel 18 an dem Antriebsgehäuse 13. Eine zweite Erfassungseinrichtung 30 dient zur Erfassung der Drehstellung des axialen Ansatzes 24 sowie der an dieser vorgesehenen Werkzeuglagerung 7 bzw. des Stanzstempels 6 bezüglich der Hubachse 8.The driver 27 surrounds the axial projection 24 and the drive spindle 18 concentrically. Its axial guide grooves 26 form in cooperation with the radial wings 25 of the axial A conventional rolling bearing 29 assumes the pivotal mounting of the driver 27 and the axial projection 24 and the drive spindle 18 to the drive housing 13. A second detection means 30 serves to detect the Rotary position of the axial projection 24 and the provided on this tool bearing 7 and the punch 6 with respect to the lifting axis. 8

Mittels einer steuerbaren Schalteinrichtung 31 kann der Mitnehmer 27 wahlweise mit dem Dreh-/Hubantriebsmotor 14 antriebsmäßig verbunden oder von dem Dreh-/Hubantriebsmotor 14 antriebsmäßig getrennt werden. Zu diesem Zweck umfasst die steuerbare Schalteinrichtung 31 einen Kupplungs-/Drehsicherungsschieber 32. Dieser ist an der Außenseite des Mitnehmers 27 in axialer Richtung verschieblich geführt. Um die Hubachse 8 ist der Kupplungs-/Drehsicherungsschieber 32 mittels Passfedern drehfest an dem Mitnehmer 27 abgestützt. Zur axialen Verlagerung des Kupplungs-/Drehsicherungsschiebers 32 dient eine Mehrzahl von Betätigungsschiebern 33, die ihrerseits an dem Antriebsgehäuse 13 in Richtung der Hubachse 8 beweglich geführt sind und über einen gemeinsamen pneumatischen Antrieb verfügen.By means of a controllable switching device 31, the driver 27 may be selectively connected to the rotary / lifting drive motor 14 drivingly separated or driven by the rotary / lifting drive motor 14. For this purpose, the controllable switching device 31 comprises a coupling / anti-rotation slide 32. This is guided on the outside of the driver 27 in the axial direction slidably. To the lifting axis 8 of the clutch / anti-rotation slide 32 by means of feathers against rotation on the driver 27 is supported. For the axial displacement of the coupling / anti-rotation slide 32 is a plurality of actuation slides 33, which in turn are movably guided on the drive housing 13 in the direction of the lifting axis 8 and have a common pneumatic drive.

Der Kupplungs-/Drehsicherungsschieber 32 greift mit dem freien Ende eines Flansches 34 in die Betätigungsschieber 33 ein. Eine radiale Flanschfläche 35 des Flansches 34 an dem Kupplungs-/Drehsicherungsschieber 32 liegt einer radialen Flanschfläche 36 an dem Flansch 20 der Hubspindelmutter 17 gegenüber. An der von der radialen Flanschfläche 35 abliegenden Seite ist der Flansch 34 des Kupplungs-/Drehsicherungsschiebers 32 mit einer weiteren radialen Flanschfläche 37 versehen. Dieser zugeordnet ist eine Anlagefläche 38 an dem Antriebsgehäuse 13.The coupling / anti-rotation slide 32 engages with the free end of a flange 34 in the actuating slide 33 a. A radial flange surface 35 of the flange 34 on the clutch / anti-rotation slide 32 is opposed to a radial flange surface 36 on the flange 20 of Hubspindelmutter 17. At the side remote from the radial flange surface 35, the flange 34 of the coupling / anti-rotation slide 32 is provided with a further radial flange surface 37. This is assigned a contact surface 38 on the drive housing 13th

Fig. 2 zeigt den elektrischen Dreh-/Hubantrieb 5 in dem der stanzenden Werkstückbearbeitung zugeordneten Betriebszustand. Fig. 2 shows the electric rotary / lifting drive 5 in the punching workpiece machining associated operating state.

Mittels des Dreh-/Hubantriebsmotors 14 wird die an dem Antriebsgehäuse 13 drehbar und axial unverschieblich gelagerte Hubspindelmutter 17 in der jeweiligen Drehrichtung um die Hubachse 8 bzw. die Spindelachse 19 gedreht. Der Kupplungs-/Drehsicherungsschieber 32 der steuerbaren Schalteinrichtung 31 ist mittels der Betätigungsschieber 33 in seine untere Endstellung verschoben. Der Mitnehmer 27 ist von dem Dreh-/Hubantriebsmotor 14 folglich antriebsmäßig getrennt.By means of the rotary / lifting drive motor 14 which is rotatably and axially non-displaceably mounted on the drive housing 13 Hubspindelmutter 17 is rotated in the respective direction of rotation about the lifting axis 8 and the spindle axis 19. The clutch / anti-rotation slide 32 of the controllable switching device 31 is moved by means of the actuating slide 33 in its lower end position. The driver 27 is thus drivingly separated from the rotary / lifting drive motor 14.

Die radiale Flanschfläche 37 an dem Kupplungs-/Drehsicherungsschieber 32 stützt sich auf der Anlagefläche 38 des Antriebsgehäuses 13 ab. Infolge der an der radialen Flanschfläche 37 des Kupplungs-/Drehsicherungsschiebers 32 und der Anlagefläche 38 des Antriebsgehäuses 13 wirkenden Normalkraft ist der Kupplungs-/Drehsicherungsschieber 32 an dem Antriebsgehäuse 13 gegen Drehung um die Hubachse 8 festgelegt. Mit dem Kupplungs-/Drehsicherungsschieber 32 sind der Mitnehmer 27 sowie der an diesem verdrehsicher gelagerte axiale Ansatz 24 und die mit diesem einstückig ausgebildete Antriebsspindel 18 gegen Drehung um die Hubachse 8 gesichert. Dementsprechend bildet der Kupplungs-/Drehsicherungsschieber 32 im Zusammenwirken mit dem Mitnehmer 27 und dem Antriebsgehäuse 13 eine Drehsicherung 39 für die Antriebsspindel 18. Das Antriebsgehäuse 13 dient dabei als Mitnehmerwiderlager.The radial flange surface 37 on the clutch / anti-rotation slide 32 is supported on the contact surface 38 of the drive housing 13. As a result of acting on the radial flange surface 37 of the coupling / anti-rotation slide 32 and the contact surface 38 of the drive housing 13 normal force of the clutch / anti-rotation slide 32 is fixed to the drive housing 13 against rotation about the lifting axis 8. With the coupling / anti-rotation slide 32, the driver 27 and the rotationally mounted on this axial projection 24 and the integrally formed with this drive spindle 18 are secured against rotation about the lifting axis 8. Accordingly, the coupling / anti-rotation slide 32 forms in cooperation with the driver 27 and the drive housing 13 a rotation lock 39 for the drive spindle 18. The drive housing 13 serves as a driver abutment.

Die Drehsicherung 39 verhindert eine Mitnahme der Antriebsspindel 18 durch die um die Hubachse 8 umlaufende Hubspindelmutter 17. Infolge der Drehung der Hubspindelmutter 17 relativ zu der Antriebsspindel 18 verlagert sich letztere gemeinschaftlich mit dem axialen Ansatz 24, der daran vorgesehenen Werkzeuglagerung 7 und dem in der Werkzeuglagerung 7 gehaltenen Stanzstempel 6 in Richtung der Hubachse 8. In Abhängigkeit von der Drehrichtung der Hubspindelmutter 17 werden die Werkzeuglagerung 7 und der Stanzstempel 6 mit einem Arbeitshub in Richtung auf das zu bearbeitende Werkstück abgesenkt oder aber im Anschluss an einen Arbeitshub mit einem Rückhub gegenüber dem bearbeiteten Werkstück zurückgezogen.As a result of the rotation of the Hubspindelmutter 17 relative to the drive spindle 18, the latter shifts jointly with the axial projection 24, the tool bearing 7 provided thereon and in the tool storage Depending on the direction of rotation of the Hubspindelmutter 17, the tool storage 7 and the punch 6 are lowered with a working stroke in the direction of the workpiece to be machined or following a working stroke with a return stroke against the machined Workpiece retracted.

In den Betriebszustand gemäß Fig. 3 wird der elektrische Dreh-/Hubantrieb 5 dann überführt, wenn die Drehstellung der Werkzeuglagerung 7 bzw. des Stanzstempels 6 bezüglich der Hubachse 8 zu verändern ist. In diesem Fall sind der Mitnehmer 27 und der Dreh-/Hubantriebsmotor 14 über den Kupplungs-/Drehsicherungsschieber 32 der steuerbaren Schalteinrichtung 31 antriebsmäßig miteinander verbunden. Zu diesem Zweck ist der Kupplungs-/Drehsicherungsschieber 32 mittels der Betätigungsschieber 33 in eine axiale Position verschoben, bei deren Einnahme er mit seiner radialen Flanschfläche 35 an die radiale Flanschfläche 36 der Hubspindelmutter 17 angepresst wird. Infolgedessen ergibt sich zwischen der Hubspindelmutter 17 und dem Kupplungs-/Drehsicherungsschieber 32 eine kraftschlüssige Verbindung. Aufgrund dieser kraftschlüssigen Verbindung bewegen sich der Kupplungs-/Drehsicherungsschieber 32, der Mitnehmer 27 sowie der axiale Ansatz 24 und die Antriebsspindel 18 gemeinschaftlich mit der Hubspindelmutter 17 in deren Drehrichtung. Eine Relativ-Drehbewegung zwischen Hubspindelmutter 17 und Antriebsspindel 18 erfolgt dabei nicht. Die Antriebsspindel 18, der axiale Ansatz 24 sowie die an diesem vorgesehene Werkzeuglagerung 7 mit dem Stanzstempel 6 führen daher ausschließlich eine Drehbewegung um die Hubachse 8 aus.In the operating state according to Fig. 3 the electric rotary / lifting drive 5 is then transferred when the rotational position of the tool bearing 7 and the punch 6 is to be changed with respect to the lifting axis 8. In this case, the driver 27 and the rotary / lifting drive motor 14 via the clutch / anti-rotation slide 32 of the controllable switching device 31 drivingly connected to each other. For this purpose, the coupling / anti-rotation slide 32 is displaced by means of the actuating slide 33 in an axial position, in the taking of which he is pressed with its radial flange surface 35 to the radial flange surface 36 of Hubspindelmutter 17. As a result, between the Hubspindelmutter 17 and the clutch / anti-rotation slide 32 results in a frictional connection. Because of this frictional connection, the clutch / anti-rotation slide 32, the driver 27 and the axial projection 24 and the drive spindle 18 move jointly with the Hubspindelmutter 17 in the direction of rotation. A relative rotational movement between Hubspindelmutter 17 and drive spindle 18 does not take place. The drive spindle 18, the axial projection 24 as well as the tool bearing 7 provided therewith with the punch 6 therefore exclusively execute a rotational movement about the stroke axis 8.

Sämtliche Funktionen des elektrischen Dreh-/Hubantriebes 5 sind numerisch gesteuert. Teil der numerischen Steuerung sind u.a. die erste Erfassungseinrichtung 22 sowie die zweite Erfassungseinrichtung 30. Die erste Erfassungseinrichtung 22 dient dabei zur gesteuerten Ausführung der Arbeitshübe sowie der Rückhübe des Stanzstempels 6 in Richtung der Hubachse 8. Die zweite Erfassungseinrichtung 30 dient zur Steuerung der Dreheinstellung des Stanzstempels 6 um die Hubachse 8. Der Dreh-/Hubantriebsmotor 14 fungiert sowohl als Drehantriebsmotor als auch als Hubantriebsmotor. Mit der Dreheinstellung des Stanzstempels 6 wird eine entsprechende Dreheinstellung der mit dem Stanzstempel 6 zusammenwirkenden Stanzmatrize vorgenommen.All functions of the electric rotary / lifting drive 5 are numerically controlled. The first detection device 22 serves for the controlled execution of the working strokes and the return strokes of the punch 6 in the direction of the lifting axis 8. The second detection device 30 serves to control the rotational adjustment the punch 6 about the lifting axis 8. The rotary / lifting drive motor 14 functions both as a rotary drive motor and as a lift drive motor. With the rotary adjustment of the punch 6, a corresponding rotational adjustment of the cooperating with the punch 6 punching die is made.

Einen elektrischen Dreh-/Hubantrieb 55 mit zwei separaten Antriebsmotoren zeigt Fig. 6. Der elektrische Dreh-/Hubantrieb 55 kann an der Stanzmaschine 1 anstelle des elektrischen Dreh-/Hubantriebes 5 verwendet werden.An electric rotary / lifting drive 55 with two separate drive motors shows Fig. 6 , The electric rotary / lifting drive 55 can be used on the punching machine 1 instead of the electric rotary / lifting drive 5.

Im Einzelnen umfasst der elektrische Dreh-/Hubantrieb 55 einen Drehantriebsmotor 64a sowie einen Hubantriebsmotor 64b. Bei beiden Motoren handelt es sich um Torque-Motoren. Der Drehantriebsmotor 64a besitzt einen Stator 65a sowie einen Rotor 66a. Der Rotor 66a ist unmittelbar mit einem Mitnehmer 77 verbunden und läuft bei Betrieb des Drehantriebsmotors 64a gemeinschaftlich mit dem Mitnehmer 77 um die Hubachse 8 des Dreh-/Hubantriebes 55 um. Der Mitnehmer 77 lagert einen mit einer Antriebsspindel 68 einstückig ausgebildeten axialen Ansatz 74. Abweichend von dem axialen Ansatz 24 gemäß den Fign. 2 bis 5 ist der axiale Ansatz 74 nach Fig. 6 als Hohlzylinder ausgeführt. Mit radialen Flügeln 75 greift der axiale Ansatz 74 in axiale Führungsnuten 76 an dem Mitnehmer 77 ein. Gemeinschaftlich bilden die radialen Flügel 75 an dem axialen Ansatz 74 und die axialen Führungsnuten 76 an dem Mitnehmer 77 eine Axialführung 78 für den axialen Ansatz 74 sowie die damit einstückig ausgebildete Antriebsspindel 68.More specifically, the rotary electric / lifting drive 55 includes a rotary drive motor 64a and a lift drive motor 64b. Both motors are torque motors. The rotary drive motor 64a has a stator 65a and a rotor 66a. The rotor 66a is directly connected to a driver 77 and runs in operation of the rotary drive motor 64a jointly with the driver 77 to the lifting axis 8 of the rotary / lifting drive 55 to. The driver 77 supports an integrally formed with a drive spindle 68 axial shoulder 74. Notwithstanding the axial projection 24 according to the FIGS. 2 to 5 is the axial shoulder 74 after Fig. 6 designed as a hollow cylinder. With radial wings 75, the axial projection 74 engages in axial guide grooves 76 on the driver 77. Collectively, the radial vanes 75 on the axial extension 74 and the axial guide grooves 76 on the tang 77 form an axial guide 78 for the axial projection 74 and the integrally formed therewith drive spindle 68th

Auf der Antriebsspindel 68 sitzt eine Hubspindelmutter 67 auf. Diese ist um die Hubachse 8 drehbar und in Richtung der Hubachse 8 unverschieblich gelagert. Ohne Zwischenschaltung eines Getriebes ist die Hubspindelmutter 67 mit einem Rotor 66b des Hubantriebsmotors 64b verbunden. Dem Rotor 66b zugeordnet ist ein Stator 65b des Hubantriebsmotors 64b. Eine Spindelachse 19 der Antriebsspindel 68 fällt mit der Hubachse 8 zusammen. Abweichend von der Antriebsspindel 18 gemäß den Fign. 2 bis 5 ist die Antriebsspindel 68 nach Fig. 6 als Hohlspindel ausgebildet. Eine Werkzeuglagerung 7 mit einem Stanzstempel 6 ist an einem Stößel 81 angeordnet, der seinerseits in der axialen Aufnahme der Antriebsspindel 68 fixiert ist. Die Hubspindelmutter 67 und die Antriebsspindel 68 bilden einen Spindeltrieb 73, der ebenso wie der Spindeltrieb 23 nach den Fign. 2 bis 5 als Kugelgewindetrieb ausgeführt ist. In Richtung der Hubachse 8 bzw. in Richtung der Spindelachse 19 sind die Hubspindelmutter 67 und der Stator 65b des Hubantriebsmotors 64b mit gegenseitiger Überdeckung angeordnet. Entsprechendes gilt für den Mitnehmer 77 und den Stator 65a des Drehantriebsmotors 64a.On the drive spindle 68 sits a Hubspindelmutter 67. This is rotatable about the lifting axis 8 and stored immovably in the direction of the lifting axis 8. Without the interposition of a transmission, the Hubspindelmutter 67 is connected to a rotor 66b of the Hubantriebsmotors 64b. Associated with the rotor 66b is a stator 65b of the lifting drive motor 64b. A spindle axis 19 of the drive spindle 68 coincides with the lifting axis 8. Notwithstanding the drive spindle 18 according to the FIGS. 2 to 5 is the drive spindle 68 after Fig. 6 designed as a hollow spindle. A tool bearing 7 with a punch 6 is arranged on a plunger 81, which in turn is fixed in the axial receptacle of the drive spindle 68. The Hubspindelmutter 67 and the drive spindle 68 form a spindle drive 73, which as well as the spindle drive 23 after the FIGS. 2 to 5 designed as a ball screw. In the direction of the lifting axis 8 or in the direction of the spindle axis 19, the Hubspindelmutter 67 and the stator 65 b of the Hubantriebsmotors 64 b are arranged with mutual overlap. The same applies to the driver 77 and the stator 65a of the rotary drive motor 64a.

Zur stanzenden Werkstückbearbeitung wird ausschließlich der Hubantriebsmotor 64b betrieben. Die gemeinschaftlich mit dem Rotor 66b des Hubantriebsmotors 64b umlaufende Hubspindelmutter 67 treibt dabei die Antriebsspindel 68 in Richtung der Hubachse 8 bzw. der Spindelachse 19 an. In Abhängigkeit von der Drehrichtung der Hubspindelmutter 67 wird die Antriebsspindel 68 und mit dieser die Werkzeuglagerung 7 mit dem Stanzstempel 6 zu dem zu bearbeitenden Werkstück hin abgesenkt oder gegenüber dem bearbeiteten Werkstück zurückgezogen. Der Drehantriebsmotor 64a ist bei Stanzbetrieb des elektrischen Dreh-/Hubantriebes 55 ausgeschaltet. Der Rotor 66a ist bei ausgeschaltetem Drehantriebsmotor 64a gegen Drehen um die Hubachse 8 in Drehrichtung blockiert. Gleiches gilt für den an dem Rotor 66a formschlüssig abgestützten Mitnehmer 77. Infolgedessen bildet der ausgeschaltete Drehantriebsmotor 64a gemeinschaftlich mit dem Mitnehmer 77 eine Drehsicherung für die sich in axialer Richtung verlagernde Antriebsspindel 68.For punching workpiece machining only the Hubantriebsmotor 64b is operated. The Hubspindelmutter circulating jointly with the rotor 66b of the Hubantriebsmotors 64b 67 drives the drive spindle 68 in the direction of the lifting axis 8 or the spindle axis 19. Depending on the direction of rotation of Hubspindelmutter 67, the drive spindle 68 and with this the tool storage 7 is lowered with the punch 6 to the workpiece to be machined or withdrawn from the machined workpiece. The rotary drive motor 64a is switched off during punching operation of the electric rotary / lifting drive 55. The rotor 66a is blocked in the direction of rotation when the rotary drive motor 64a is turned against rotation about the lifting axis 8. The same applies to the driver 77, which is positively supported on the rotor 66a. As a result, the switched-off rotary drive motor 64a, together with the driver 77, forms an anti-rotation device for the drive spindle 68 displacing in the axial direction.

Zur Veränderung der Dreheinstellung der Werkzeuglagerung 7 sowie des Stanzstempels 6 bezüglich der Hubachse 8 werden der Drehantriebsmotor 64a und der Hubantriebsmotor 64b mit gleicher Drehrichtung und gleicher Drehgeschwindigkeit betrieben. Der Rotor 66a des Drehantriebsmotors 64a nimmt dabei den axialen Ansatz 74 und über diesen die Antriebsspindel 68, der Hubantriebsmotor 64b die Hubspindelmutter 67 in der betreffenden Drehrichtung über den gewünschten Drehwinkel mit. Auf diese Art und Weise verändert sich die Dreheinstellung der Werkzeuglagerung 7 und des Stanzstempels 6, ohne dass eine Relativ-Drehbewegung von Hubspindelmutter 67 und Antriebsspindel 68 und eine damit verbundene axiale verlagerung der Antriebsspindel 68 erfolgen würde.To change the rotational adjustment of the tool bearing 7 and the punch 6 with respect to the lifting axis 8 of the rotary drive motor 64a and the lifting drive motor 64b are operated with the same direction of rotation and the same rotational speed. The rotor 66a of the rotary drive motor 64a takes the axial projection 74 and via this the drive spindle 68, the lifting drive motor 64b, the Hubspindelmutter 67 in the relevant direction of rotation with the desired rotation angle. In this way, the rotational adjustment of the tool bearing 7 and the punch 6 changes without a relative rotational movement of Hubspindelmutter 67 and drive spindle 68 and a associated axial displacement of the drive spindle 68 would take place.

Auch die Funktionen des elektrischen Dreh-/Hubantriebes 55 sind numerisch gesteuert. Als Bestandteile der numerischen Steuerung sind u.a. nicht im Einzelnen gezeigte bzw. erläuterte Erfassungseinrichtungen zur Aufnahme von Drehzahl bzw. Drehwinkel und Drehrichtung der Hubspindelmutter 67 sowie der Antriebsspindel 68 vorgesehen.The functions of the electric rotary / lifting drive 55 are numerically controlled. As components of the numerical control, i.a. not shown in detail or explained detection devices for receiving rotational speed or rotation angle and direction of rotation of Hubspindelmutter 67 and the drive spindle 68 is provided.

Fig. 7 zeigt einen elektrischen Dreh-/Hubantrieb 85 mit als Torque-Motoren ausgebildeten Antriebsmotoren 94a, 94b. Der Antriebsmotor 94a umfasst einen Stator 95a sowie einen Rotor 96a, der Antriebsmotor 94b einen Stator 95b sowie einen Rotor 96b. Der Rotor 96a ist mit einer Hubspindelmutter 97a, der Rotor 96b mit einer Hubspindelmutter 97b direkt verbunden. Die Hubspindelmutter 97a sitzt auf einer Antriebsspindel 98a, die Hubspindelmutter 97b auf einer Antriebsspindel 98b. Die Hubspindelmuttern 97a, 97b und die zugeordneten Motoren 95a, 95b der Antriebsmotoren 94a, 94b sind mit gegenseitiger axialer Überdekkung angeordnet. Fig. 7 shows an electric rotary / lifting drive 85 with drive motors 94a, 94b designed as torque motors. The drive motor 94a comprises a stator 95a and a rotor 96a, the drive motor 94b a stator 95b and a rotor 96b. The rotor 96a is directly connected to a Hubspindelmutter 97a, the rotor 96b with a Hubspindelmutter 97b. The Hubspindelmutter 97 a sitting on a drive spindle 98 a, the Hubspindelmutter 97 b on a drive spindle 98 b. The Hubspindelmuttern 97a, 97b and the associated motors 95a, 95b of the drive motors 94a, 94b are arranged with mutual axial Überdekkung.

Beide Antriebsspindeln 98a, 98b sind als Hohlspindeln ausgeführt. In ihrem Innern nehmen die Antriebsspindeln 98a, 98b einen Stößel 111 auf, an dessen werkstückseitigem Ende die Werkzeuglagerung 7 mit dem Stanzstempel 6 vorgesehen ist. Die Antriebsspindeln 98a, 98b sind über den Stößel 111 zu einer Baueinheit miteinander verbunden. Eine Hubachse 8 des Dreh-/Hubantriebes 85 fällt mit einer gemeinsamen Spindelachse 19 der Antriebsspindeln 98a, 98b zusammen.Both drive spindles 98a, 98b are designed as hollow spindles. In their interior, the drive spindles 98a, 98b receive a plunger 111, on the workpiece side end of which the tool bearing 7 with the punch 6 is provided. The drive spindles 98a, 98b are connected to each other via the plunger 111 to form a structural unit. A lifting axis 8 of the rotary / lifting drive 85 coincides with a common spindle axis 19 of the drive spindles 98a, 98b.

Die Hubspindelmutter 97a bildet gemeinsam mit der Antriebsspindel 98a einen Spindeltrieb 103a, die Hubspindelmutter 97b mit der Antriebsspindel 98b einen Spindeltrieb 103b. Die Spindeltriebe 103a, 103b besitzen gegenläufige Gewinde, sind ansonsten aber baugleich.The Hubspindelmutter 97a forms together with the drive spindle 98a a spindle drive 103a, the Hubspindelmutter 97b with the drive spindle 98b a spindle drive 103b. The spindle drives 103a, 103b have opposing threads, but are otherwise identical.

Zur stanzenden Werkstückbearbeitung werden die beiden Antriebsmotoren 94a, 94b mit gleicher Drehzahl, aber gegenläufig betrieben. Im Ergebnis ergibt sich eine Verlagerung der Antriebsspindeln 98a, 98b sowie der Werkzeuglagerung 7 und des Stanzstempels 6 in Richtung der Hubachse 8. Infolge des gegenläufigen Motorenbetriebes wirken die Hubspindelmutter 97a sowie der Antriebsmotor 94a als Drehsicherung für die Antriebsspindel 98b, die Hubspindelmutter 97b und der Antriebsmotor 94b als Drehsicherung für die Antriebsspindel 98a.For punching workpiece machining, the two drive motors 94a, 94b are operated at the same speed but in opposite directions. As a result, the Hubspindelmutter 97a and the drive motor 94a act as a rotation lock for the drive spindle 98b, the Hubspindelmutter 97b and the drive motor 94b as a rotation lock for the drive spindle 98a.

Zur Dreheinstellung der Werkzeuglagerung 7 sowie des Stanzstempels 6 um die Hubachse 8 bzw. die Spindelachse 19 werden die Antriebsmotoren 94a, 94b mit übereinstimmender Drehzahl und identischer Drehrichtung betrieben. Daraus resultiert eine gemeinschaftliche Drehbewegung der Hubspindelmutter 97a und der Antriebsspindel 98a sowie der Hubspindelmutter 97b und der Antriebsspindel 98b. Eine Relativ-Drehbewegung zwischen der Hubspindelmutter 97a und der Antriebsspindel 98a sowie der Hubspindelmutter 97b und der Antriebsspindel 98b unterbleibt. In diesem Betriebszustand fungieren die Hubspindelmuttern 97a, 97b als Mitnehmer für die Antriebsspindeln 98a, 98b.For rotational adjustment of the tool bearing 7 and the punch 6 about the lifting axis 8 and the spindle axis 19, the drive motors 94a, 94b operated with the same speed and identical direction of rotation. This results in a joint rotational movement of Hubspindelmutter 97 a and the Drive spindle 98a and the Hubspindelmutter 97b and the drive spindle 98b. A relative rotational movement between the Hubspindelmutter 97a and the drive spindle 98a and the Hubspindelmutter 97b and the drive spindle 98b is omitted. In this operating state, the Hubspindelmuttern 97a, 97b act as a driver for the drive spindles 98a, 98b.

Denkbar ist auch eine axiale Verlagerung der Antriebsspindeln 98a, 98b bzw. der Werkzeuglagerung 7 mit dem Stanzstempel 6 bei gleichzeitiger Änderung der Drehstellung bezüglich der Hubachse 8. Zu diesem Zweck sind die Antriebsmotoren 94a, 94b mit voneinander verschiedenen Drehzahlen zu betreiben.Also conceivable is an axial displacement of the drive spindles 98a, 98b or the tool bearing 7 with the punch 6 while changing the rotational position with respect to the lifting axis 8. For this purpose, the drive motors 94a, 94b operate at different speeds from each other.

Je nach Betriebsweise bilden die Antriebsmotoren 94a, 94b Drehantriebsmotoren oder Hubantriebsmotoren.Depending on the mode of operation, the drive motors 94a, 94b form rotary drive motors or lifting drive motors.

Claims (10)

  1. A punching machine having a tool bearing (7) for a punching tool (6) and having a rotary/lifting drive (5, 55, 85) by means of which the tool bearing (7) is movable in the direction of a lifting axis (8) back and forth to the working area of the punching machine and is rotatably adjustable about the lifting axis (8) and which comprises an electric rotary drive motor (14, 64a; 94a, 94b), an electric lifting drive motor (14, 64b; 94a, 94b) and a drive spindle (18, 68; 98a, 98b) connected for movement to the tool bearing (7), wherein to move the tool bearing (7) in the direction of the lifting axis (8) a lifting spindle nut (17, 67; 97a, 97b) disposed on the drive spindle (18, 68; 98a, 98b) is rotatable by means of the lifting drive motor (14, 64b; 94a, 94b) relative to the drive spindle (18, 68; 98a, 98b) and the drive spindle (18, 68; 98a, 98b) is displaceable in the direction of a spindle axis (19) and wherein for rotary adjustment of the tool bearing (7) about the lifting axis (8) a driving element (27, 77; 97a, 97b) rotatable about the spindle axis (19) of the drive spindle (18, 68; 98a, 98b) is rotatable about the spindle axis (19) by means of the rotary drive motor (14, 64a; 97a, 97b), in the process entraining the drive spindle (18, 68; 98a, 98b), characterised in that the lifting spindle nut (17, 67; 97a, 97b) is mounted on a rotor (16, 66b; 96a, 96b) of the lifting drive motor (14, 64b; 94a, 94b) rotating about the spindle axis (19) of the drive spindle (18, 68; 98a, 98b) and/or the driving element (77; 97a, 97b) is mounted on a rotor (66a, 96a, 96b) of the rotary drive motor (64a; 94a, 94b) rotating about the spindle axis (19) of the drive spindle (68; 98a, 98b), and in that the lifting spindle nut (17, 67; 97a, 97b) and the associated rotor (16, 66b; 96a, 96b) are arranged inside a stator (15, 65b; 95a, 95b) of the lifting drive motor (14, 64b; 94a, 94b) and/or the driving element (77; 97a, 97b) and the associated rotor (66a; 96a, 96b) are arranged inside a stator (65a; 95a, 95b) of the rotary drive motor (64a; 94a, 94b), wherein the lifting spindle nut (17, 67; 97a, 97b) and the stator (15, 65b; 95a, 95b) of the lifting drive motor (14, 64b; 94a, 94b) and/or the driving element (77; 97a, 97b) and the stator (65a; 95a, 95b) of the rotary drive motor (64a; 94a, 94b) overlap each other at least partially in the direction of the spindle axis (19).
  2. Punching machine according to the preamble of claim 1, characterised in that the rotary drive motor (14) and the lifting drive motor (14) are formed jointly by a rotary/lifting drive motor (14) and in that a controllable switching arrangement (31) is provided, by means of which the driving element (27) for the drive spindle (18) can be connected in respect of drive either to the rotary/lifting drive motor (14) or can be disconnected in respect of drive from the rotary/lifting drive motor (14), wherein when the driving element (27) and the rotary/lifting drive motor (14) are connected in respect of drive the driving element (27) is rotatable about the spindle axis (19) by means of the rotary/lifting drive motor (14), entraining in the process the drive spindle (18), and wherein when the driving element (27) and the rotary/lifting drive motor (14) are disconnected in respect of drive the lifting spindle nut (17) is rotatable relative to the drive spindle (18) by means of the rotary/lifting drive motor (14), displacing in the process the drive spindle (18) in the direction of the spindle axis (19).
  3. Punching machine according to claim 2, characterised in that the driving element (27) for the drive spindle (18) is connectable in respect of drive to the rotary/lifting drive motor (14) by means of the controllable switching arrangement (31) on the lifting spindle nut (17) connected in respect of drive to the rotary/lifting drive motor (14).
  4. Punching machine according to claim 2 or 3, characterised in that the lifting spindle nut (17) and the driving element (27) for the drive spindle (18) are arranged side by side along the spindle axis (19) and in that the controllable switching arrangement (31) comprises a coupling slide, which is displaceable in controlled manner along the spindle axis (19) and in a first displaced position connects the lifting spindle nut (17) and the driving element (27) in a manner secured against rotation in the direction of rotation of the lifting spindle nut (17) and in a further displaced position releases the rotationally secure connection of the lifting spindle nut (17) and the driving element (27).
  5. Punching machine according to any one of claims 2 to 4, characterised in that, on disconnection of the driving element (27) for the drive spindle (18) in respect of drive from the rotary/lifting drive motor (14), the drive spindle (18) is securable against rotation about the spindle axis (19) by a means for preventing rotation (39).
  6. Punching machine according to any one of claims 2 to 5, characterised in that the means for preventing rotation (39) for the drive spindle (18) comprises an anti-rotation slide, which is displaceable in controlled manner along the spindle axis (19) and which in a first displaced position fixes the driving element (27) for the drive spindle (18) against rotation about the spindle axis (19) at a driving element abutment (13) and in a further displaced position releases the driving element (27) from the driving element abutment (13) for rotation about the spindle axis (19).
  7. Punching machine according to any one of claims 2 to 6, characterised in that the coupling slide of the controllable switching arrangement (31) and the anti-rotation slide of the means for preventing rotation (39) of the driving element (27) for the drive spindle (18) are formed jointly by a coupling/anti-rotation slide (32), which is displaceable in controlled manner along the spindle axis (19) and which in a first displaced position releases the driving element (27) from the driving element abutment (13) for rotation about the spindle axis (19) and at the same time connects the driving element (27) and the lifting spindle nut (17) with one another in a manner secure against rotation in the direction of rotation of the lifting spindle nut (17) and which in a further displaced position releases the rotationally secure connection of lifting spindle nut (17) and driving element (27) and at the same time fixes the driving element (27) at a driving element abutment (13) against rotation about the spindle axis (19).
  8. Punching machine according to any one of claims 2 to 7, characterised in that the lifting spindle nut (17) is mounted on a rotor (16) of the rotary/lifting drive motor (14) rotating about the spindle axis (19) of the drive spindle (18) and in that the lifting spindle nut (17) and the rotor (16) are arranged inside a stator (15) of the rotary/lifting drive motor (14).
  9. Punching machine according to any one of claims 2 to 8, characterised in that the lifting spindle nut (17) and the stator (15) of the rotary/lifting drive motor (14) at least partially overlap each other in the direction of the spindle axis (19).
  10. Punching machine according to any one of the preceding claims, characterised in that a torque motor is provided as lifting drive motor (14, 64b; 94a, 94b) and/or as rotary drive motor (14, 64a; 94a, 94b) and/or as rotary/lifting drive motor (14).
EP20040012523 2004-05-27 2004-05-27 Punching machine with electrical rotating- /lifting drive Expired - Lifetime EP1600225B1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
ES04012523T ES2305611T3 (en) 2004-05-27 2004-05-27 TROQUELADORA WITH A DRIVE / ELECTRIC CARRERA DRIVE.
EP20040012523 EP1600225B1 (en) 2004-05-27 2004-05-27 Punching machine with electrical rotating- /lifting drive
AT04012523T ATE396805T1 (en) 2004-05-27 2004-05-27 PUNCHING MACHINE WITH ELECTRICAL ROTARY/LIFTING DRIVE
PL04012523T PL1600225T3 (en) 2004-05-27 2004-05-27 Punching machine with electrical rotating- /lifting drive
DE200450007280 DE502004007280D1 (en) 2004-05-27 2004-05-27 Punching machine with electric rotary / lifting drive
JP2007513797A JP4705635B2 (en) 2004-05-27 2005-05-25 Punching machine equipped with electrical rotation / lifting drive
CNB2005800172168A CN100427236C (en) 2004-05-27 2005-05-25 Punching machine with electrical rotating- /lifting drive
PCT/EP2005/005636 WO2005118177A1 (en) 2004-05-27 2005-05-25 Punching machine comprising an electric rotary/lifting drive
US11/563,582 US7717021B2 (en) 2004-05-27 2006-11-27 Punch tool lift spindle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20040012523 EP1600225B1 (en) 2004-05-27 2004-05-27 Punching machine with electrical rotating- /lifting drive

Publications (2)

Publication Number Publication Date
EP1600225A1 EP1600225A1 (en) 2005-11-30
EP1600225B1 true EP1600225B1 (en) 2008-05-28

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20040012523 Expired - Lifetime EP1600225B1 (en) 2004-05-27 2004-05-27 Punching machine with electrical rotating- /lifting drive

Country Status (9)

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US (1) US7717021B2 (en)
EP (1) EP1600225B1 (en)
JP (1) JP4705635B2 (en)
CN (1) CN100427236C (en)
AT (1) ATE396805T1 (en)
DE (1) DE502004007280D1 (en)
ES (1) ES2305611T3 (en)
PL (1) PL1600225T3 (en)
WO (1) WO2005118177A1 (en)

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Also Published As

Publication number Publication date
JP2008500180A (en) 2008-01-10
PL1600225T3 (en) 2008-10-31
ATE396805T1 (en) 2008-06-15
JP4705635B2 (en) 2011-06-22
ES2305611T3 (en) 2008-11-01
US20070240551A1 (en) 2007-10-18
CN100427236C (en) 2008-10-22
EP1600225A1 (en) 2005-11-30
CN1960818A (en) 2007-05-09
WO2005118177A1 (en) 2005-12-15
US7717021B2 (en) 2010-05-18
DE502004007280D1 (en) 2008-07-10

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