WO2000037213B1 - Machine tool with a piezoelectric position adjusting device - Google Patents

Machine tool with a piezoelectric position adjusting device

Info

Publication number
WO2000037213B1
WO2000037213B1 PCT/DE1999/003872 DE9903872W WO0037213B1 WO 2000037213 B1 WO2000037213 B1 WO 2000037213B1 DE 9903872 W DE9903872 W DE 9903872W WO 0037213 B1 WO0037213 B1 WO 0037213B1
Authority
WO
WIPO (PCT)
Prior art keywords
machine tool
workpiece table
processing unit
tool according
piezoelectric
Prior art date
Application number
PCT/DE1999/003872
Other languages
German (de)
French (fr)
Other versions
WO2000037213A3 (en
WO2000037213A2 (en
Inventor
Dieter Kroll
Stefan Weber
Original Assignee
Schwaebische Werkzeugmaschinen
Dieter Kroll
Stefan Weber
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 Schwaebische Werkzeugmaschinen, Dieter Kroll, Stefan Weber filed Critical Schwaebische Werkzeugmaschinen
Priority to EP99964391A priority Critical patent/EP1140423A2/en
Publication of WO2000037213A2 publication Critical patent/WO2000037213A2/en
Publication of WO2000037213A3 publication Critical patent/WO2000037213A3/en
Publication of WO2000037213B1 publication Critical patent/WO2000037213B1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/25—Movable or adjustable work or tool supports
    • B23Q1/26—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members
    • B23Q1/34—Relative movement obtained by use of deformable elements, e.g. piezoelectric, magnetostrictive, elastic or thermally-dilatable elements
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/402—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by control arrangements for positioning, e.g. centring a tool relative to a hole in the workpiece, additional detection means to correct position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/0003—Arrangements for preventing undesired thermal effects on tools or parts of the machine
    • B23Q11/0007—Arrangements for preventing undesired thermal effects on tools or parts of the machine by compensating occurring thermal dilations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/001—Arrangements compensating weight or flexion on parts of the machine
    • B23Q11/0028—Arrangements compensating weight or flexion on parts of the machine by actively reacting to a change of the configuration of the machine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q39/00—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation
    • B23Q2039/002—Machines with twin spindles

Abstract

The invention relates to a machine tool (1) especially for machining work pieces. Said machine tool comprises a machining unit (3). At least one electrically controlled piezoelectric control element (11) is provided as a position adjusting device, especially for a work spindle (4) of the machining unit (3). If a change of position is detected, the machining unit can quickly be mechanically moved to the respective desired position.

Claims

GEÄNDERTE ANSPRÜCHE CHANGED REQUIREMENTS
[beim Internationalen Büro am 8. August 2000 (08.08.00) eingegangen; ursprüngliche Ansprüche 1-12 durch geänderte Ansprüche 1-6 ersetzt (2 Seiten)][Received at the International Office on August 8, 2000 (August 8, 2000); original claims 1-12 replaced by amended claims 1-6 (2 pages)]
Werkzeugmaschine (1) zur insbesondere spanenden Bearbeitung von Werkstücken, mit einer Bearbeitungseinheit (3) und/oder einem Werkstücktisch und mit mindestens einem elektrisch angesteuerten piezoelektrischen Stellelement (11; 33) als Positionskorrektureinrichtung für die Bearbeitungseinheit (3) bzw. den Werkstücktisch,Machine tool (1) for in particular machining workpieces, with a processing unit (3) and / or a workpiece table and with at least one electrically controlled piezoelectric actuating element (11; 33) as a position correction device for the processing unit (3) or the workpiece table,
dadurch gekennzeichnet,characterized,
daß der Abstand zwischen zwei Bearbeitungseinheiten (3) , insbesondere zwischen ihren Arbeitsspindeln (4) , oder zwischen zwei Werkstücktischen der Werkzeugmaschine über das mindestens eine piezoelektrische Stellelement (11) veränderbar ist.that the distance between two processing units (3), in particular between their work spindles (4), or between two workpiece tables of the machine tool can be changed via the at least one piezoelectric actuating element (11).
Werkzeugmaschine gemäß dem Oberbegriff von Anspruch 1, dadurch gekennzeichnet, daß die Bearbeitungseinheit bzw. der Werkstücktisch über eine durch mindestens zwei, vorzugsweise mindestens drei piezoelektrische Stellelemente (33) gebildete Mehrpunkthalterung (34) gelagert ist, deren Wirkrichtung jeweils etwa radial zu einem linearen Freiheitsgrad (X-, Y-, Z-Richtung) der Bearbeitungseinheit (3) bzw. des Werkstücktisches verläuft. Machine tool according to the preamble of claim 1, characterized in that the processing unit or the workpiece table is mounted on a multi-point holder (34) formed by at least two, preferably at least three piezoelectric actuating elements (33), the effective direction of which is in each case approximately radial to a linear degree of freedom ( X, Y, Z direction) of the processing unit (3) or the workpiece table.
3. Werkzeugmaschine nach Anspruch 2 , dadurch gekennzeichnet, daß die Bearbeitungseinheit bzw. der Werkstücktisch über mindestens zwei in Richtung des linearen Freiheitsgrades (X-, Y- , Z-Richtung) hintereinander angeordnete Mehrpunkthalterungen (34) räumlich verstellbar gelagert ist.3. Machine tool according to claim 2, characterized in that the processing unit or the workpiece table over at least two in the direction of the linear degree of freedom (X, Y, Z direction) successively arranged multi-point holders (34) is mounted spatially adjustable.
. Werkzeugmaschine nach einem der vorhergehenden Ansprüche, gekennzeichnet durch einen Meßfühler, der eine Verlagerung der Bearbeitungseinheit (3) bzw. des Werkstücktisches unmittelbar oder einen die Verlagerung bestimmenden Parameter als Fühlgröße für das Ansteuern des mindestens einen piezoelektrischen Stell- elements (11; 33) erfaßt.. Machine tool according to one of the preceding claims, characterized by a sensor which detects a displacement of the machining unit (3) or the workpiece table directly or a parameter determining the displacement as a sensing variable for controlling the at least one piezoelectric actuating element (11; 33).
5. Werkzeugmaschine nach Anspruch 10, dadurch gekennzeichnet, daß als Sensor das mindestens eine piezoelektrisches Stellelement (11; 33) selbst vorgesehen ist.5. Machine tool according to claim 10, characterized in that the at least one piezoelectric actuator (11; 33) itself is provided as a sensor.
6. Werkzeugmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß jedem piezoelektrischen Stellelement (11; 33) eine Halteeinrichtung zugeordnet ist, welche die Bearbeitungseinheit (3) bzw. den Werkstücktisch jeweils in der durch das piezoelektrische Stellelement (11; 33) vorgegebenen Lage hält . 6. Machine tool according to one of the preceding claims, characterized in that each piezoelectric actuator (11; 33) is assigned a holding device which the processing unit (3) or the workpiece table in each case in the position predetermined by the piezoelectric actuator (11; 33) holds.
PCT/DE1999/003872 1998-12-22 1999-12-03 Machine tool with a piezoelectric position adjusting device WO2000037213A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP99964391A EP1140423A2 (en) 1998-12-22 1999-12-03 Machine tool with a piezoelectric position adjusting device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19859360A DE19859360C2 (en) 1998-12-22 1998-12-22 Machine tool with piezoelectric position correction device
DE19859360.0 1998-12-22

Publications (3)

Publication Number Publication Date
WO2000037213A2 WO2000037213A2 (en) 2000-06-29
WO2000037213A3 WO2000037213A3 (en) 2000-10-26
WO2000037213B1 true WO2000037213B1 (en) 2000-12-07

Family

ID=7892186

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1999/003872 WO2000037213A2 (en) 1998-12-22 1999-12-03 Machine tool with a piezoelectric position adjusting device

Country Status (3)

Country Link
EP (1) EP1140423A2 (en)
DE (1) DE19859360C2 (en)
WO (1) WO2000037213A2 (en)

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EP1450985B1 (en) * 2001-12-10 2007-04-11 Sascha Mantovani Machine tool with machining head kept fixed by means of bars whose length is variable by magnetostriction
DE10240700A1 (en) * 2002-09-04 2004-03-25 Leitz Messtechnik Gmbh Coordinate measurement instrument and method for its use in concentricity measurements, whereby stepper motors are provided to adjust the angle of inclination of a rotatable feeler head relative to its support axis
DE10329402A1 (en) 2003-06-28 2005-01-13 Witzig & Frank Gmbh machine tool
DE10343320A1 (en) * 2003-09-10 2005-04-14 Chiron-Werke Gmbh & Co Kg Machine tool with two spindle housings and adjusting device for the position of the spindle housing to each other
US7544025B2 (en) 2005-02-16 2009-06-09 Cross Hüller GmbH Double-spindle machine tool
EP1693147A1 (en) * 2005-02-16 2006-08-23 Cross Hüller GmbH Twinspindle machine tool with two workholders, one of which is adjustable
DE102006028972A1 (en) 2006-06-19 2007-12-20 Chiron-Werke Gmbh & Co. Kg Spindle unit with operating spindle that can be adjusted during operation
DE102006035248B4 (en) * 2006-07-26 2013-08-29 Grob-Werke Gmbh & Co. Kg Temperature compensation method
US8150545B2 (en) 2006-07-28 2012-04-03 Siemens Aktiengesellschaft Position-dependent compliance compensation in a machine tool
DE102006049774A1 (en) * 2006-10-21 2008-04-24 Schaeffler Kg Length compensation unit, in particular for a machine tool
DE102006049867B4 (en) 2006-10-23 2021-09-16 Siemens Aktiengesellschaft Machine tool and method for suppressing chatter vibrations
DE102007026562B4 (en) 2007-06-08 2010-08-26 Erwin Junker Maschinenfabrik Gmbh Grinding center and method for simultaneously grinding multiple bearings of crankshafts
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AT512802B1 (en) 2012-05-07 2014-02-15 Anger Machining Gmbh Position compensation system in a transfer center for machining workpieces
DE102013110054A1 (en) * 2013-09-12 2015-03-12 Elha-Maschinenbau Liemke Kg Spindle head of a machine tool
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AT521951B1 (en) 2018-11-29 2020-07-15 Fill Gmbh Machine tool
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Also Published As

Publication number Publication date
EP1140423A2 (en) 2001-10-10
WO2000037213A3 (en) 2000-10-26
DE19859360A1 (en) 2000-07-06
DE19859360C2 (en) 2003-07-17
WO2000037213A2 (en) 2000-06-29

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