DE202009018679U1 - Device for clamping a tool or a workpiece - Google Patents
Device for clamping a tool or a workpiece Download PDFInfo
- Publication number
- DE202009018679U1 DE202009018679U1 DE202009018679U DE202009018679U DE202009018679U1 DE 202009018679 U1 DE202009018679 U1 DE 202009018679U1 DE 202009018679 U DE202009018679 U DE 202009018679U DE 202009018679 U DE202009018679 U DE 202009018679U DE 202009018679 U1 DE202009018679 U1 DE 202009018679U1
- Authority
- DE
- Germany
- Prior art keywords
- spindle nut
- threaded rod
- sensor
- clamping
- housing
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/24—Chucks characterised by features relating primarily to remote control of the gripping means
- B23B31/28—Chucks characterised by features relating primarily to remote control of the gripping means using electric or magnetic means in the chuck
-
- 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
- B23Q16/00—Equipment for precise positioning of tool or work into particular locations not otherwise provided for
-
- 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
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
-
- 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
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/002—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring the holding action of work or tool holders
- B23Q17/003—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring the holding action of work or tool holders by measuring a position
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B77/00—Vehicle locks characterised by special functions or purposes
- E05B77/02—Vehicle locks characterised by special functions or purposes for accident situations
- E05B77/04—Preventing unwanted lock actuation, e.g. unlatching, at the moment of collision
- E05B77/06—Preventing unwanted lock actuation, e.g. unlatching, at the moment of collision by means of inertial forces
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B79/00—Mounting or connecting vehicle locks or parts thereof
- E05B79/10—Connections between movable lock parts
- E05B79/20—Connections between movable lock parts using flexible connections, e.g. Bowden cables
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B85/00—Details of vehicle locks not provided for in groups E05B77/00 - E05B83/00
- E05B85/10—Handles
- E05B85/14—Handles pivoted about an axis parallel to the wing
- E05B85/16—Handles pivoted about an axis parallel to the wing a longitudinal grip part being pivoted at one end about an axis perpendicular to the longitudinal axis of the grip part
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2260/00—Details of constructional elements
- B23B2260/062—Electric motors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2260/00—Details of constructional elements
- B23B2260/128—Sensors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2260/00—Details of constructional elements
- B23B2260/136—Springs
-
- 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
- Y10T279/00—Chucks or sockets
- Y10T279/21—Chucks or sockets with measuring, indicating or control means
-
- 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
- Y10T279/00—Chucks or sockets
- Y10T279/27—Separate chuck-actuating power source
- Y10T279/275—Self-contained
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49764—Method of mechanical manufacture with testing or indicating
- Y10T29/49771—Quantitative measuring or gauging
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49764—Method of mechanical manufacture with testing or indicating
- Y10T29/49778—Method of mechanical manufacture with testing or indicating with aligning, guiding, or instruction
- Y10T29/4978—Assisting assembly or disassembly
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49998—Work holding
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/53087—Means to assemble or disassemble with signal, scale, illuminator, or optical viewer
-
- 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
- Y10T409/00—Gear cutting, milling, or planing
- Y10T409/30—Milling
- Y10T409/30952—Milling with cutter holder
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gripping On Spindles (AREA)
Abstract
Vorrichtung zum Einspannen eines Werkzeuges oder eines Werkstückes, dadurch gekennzeichnet, dass ein Elektrospanner (1) mit einem an der Arbeitsspindel einer Werkzeugmaschine befestigbaren Gehäuse (2) vorgesehen ist, in dem eine axial verstellbare Gewindestange (3) zur Verstellung der Spannbacken eines Spannfutters gelagert ist, die mittels einer Spindelmutter (7) verstellbar ist, auf die ein elektrischer Stellmotor (4) einwirkt, dessen Rotor in Antriebsverbindung mit der Spindelmutter (7) steht, dass die Spindelmutter (7) axial zwischen zwei Federpaketen (8) eingebettet ist, und dass der Gewindestange (3) ein erster Sensor zur Positionserfassung und der Spindelmutter (7) ein zweiter Sensor zur Positionserfassung zugeordnet ist.Device for clamping a tool or a workpiece, characterized in that an electric tensioner (1) is provided with a fastened to the work spindle of a machine tool housing (2) in which an axially adjustable threaded rod (3) is mounted for adjusting the jaws of a chuck , which is adjustable by means of a spindle nut (7) on which an electric servomotor (4) acts whose rotor is in driving connection with the spindle nut (7), that the spindle nut (7) is embedded axially between two spring assemblies (8), and in that the threaded rod (3) is associated with a first sensor for position detection and the spindle nut (7) with a second sensor for position detection.
Description
Die Erfindung ist gebildet durch ein Verfahren zum Einspannen eines Werkzeugs oder eines Werkstücks mittels eines Elektrospanners, der ein an der Arbeitsspindel einer Werkzeugmaschine befestigtes Gehäuse, in dem axial verstellbar eine Gewindestange zur Verstellung der Spannbacken eines Spannfutters gelagert ist, und einen elektrischen Stellmotor umfaßt, dessen Rotor in Antriebsverbindung mit einem die Spindelmutter der Gewindestange verstellenden Antriebsrad steht, wobei der Gewindestange ein erster Sensor zur Erfassung von deren axialer Position und der Spindelmutter ein zweiter Sensor zur Erfassung von deren axialer Position zugeordnet ist, umfassend den Verfahrensschritt der Bestimmung der Position der Gewindestange mittels des erstens Sensors bei Auftreten einer leichten axialen Kraft infolge des Anliegens der Spannbacken an dem Werkzeug bzw. dem Werkstück, und fortgesetzter Verstellung der Spindelmutter, bis mittels des zweiten Sensors eine vorgegebene Geberdifferenz zwischen dem ersten Sensor und dem zweiten Sensor festgestellt ist. Gegenstand der Erfindung ist weiterhin eine Vorrichtung zur Durchführung des vorstehend genannten Verfahrens.The invention is formed by a method for clamping a tool or a workpiece by means of an electro-tensioner, which is mounted on the work spindle of a machine tool housing in which axially adjustable a threaded rod for adjusting the clamping jaws of a chuck is mounted, and an electric servomotor, whose Rotor in drive connection with the spindle nut of the threaded rod adjusting drive wheel, wherein the threaded rod is associated with a first sensor for detecting the axial position and the spindle nut, a second sensor for detecting its axial position, comprising the step of determining the position of the threaded rod means the first sensor upon the occurrence of a slight axial force due to the abutment of the clamping jaws on the tool or the workpiece, and continued adjustment of the spindle nut until, by means of the second sensor, a predetermined encoder difference between the first sensor and the second sensor is detected. The invention further provides an apparatus for carrying out the above-mentioned method.
Aus der
Der Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren anzugeben, mit dem die vorstehenden Probleme vermieden werden können. Die Aufgabe der Erfindung ist weiterhin, eine Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens bereitzustellen.The invention is therefore based on the object to provide a method by which the above problems can be avoided. The object of the invention is furthermore to provide a device for carrying out the method according to the invention.
Der das Verfahren betreffende Teil der Aufgabe wird durch das eingangs genannte Verfahren gelöst. Mit diesem Verfahren ist der große Vorteil verbunden, dass nicht nur eine Drehmomentsteuerung für das Erreichen der Spannkraft eingesetzt werden muss, sondern eine wegabhängige Steuerung vorliegt, da eine fortgesetzte Verstellung der Gewindestange erfolgt, bis die vorgegebenen Geberdifferenz erreicht ist. Der Spannvorgang selber läuft schneller ab.The part of the problem relating to the method is achieved by the method mentioned at the outset. With this method, the great advantage that not only a torque control for the achievement of the clamping force must be used, but a path-dependent control is present as a continuous adjustment of the threaded rod takes place until the predetermined encoder difference is reached. The clamping process itself runs faster.
Im Rahmen der Erfindung ist es bevorzugt, wenn der Spindelmutter, vorzugsweise beidseits angeordnete, Federpakete zugeordnet sind, die bei der Erzeugung der vorgegebenen Geberdifferenz gespannt werden. Mit dieser Ausgestaltung ist der Vorteil verbunden, dass eine Erhöhung der Spannsicherheit erreicht wird, da die Federpakete als Energiespeicher dienen und einer schnellen Lageänderung der Gewindestange entgegenwirken. Die beidseitige Anordnung der Federpakete bewirkt, dass die Gewindestange in beiden Richtungen die gleichen Eigenschaften aufweist.In the context of the invention it is preferred if the spindle nut, preferably arranged on both sides, spring assemblies are assigned, which are stretched in the generation of the predetermined encoder difference. This embodiment has the advantage that an increase in the clamping reliability is achieved because the spring assemblies serve as energy storage and counteract a rapid change in position of the threaded rod. The two-sided arrangement of the spring assemblies causes the threaded rod has the same properties in both directions.
Unter Sicherheitsaspekten ist es günstig, wenn während des gespannten Zustandes die Geberdifferenz überwacht wird, insbesondere wenn die Geberdifferenz als Regelgröße zur automatischen Erhaltung der Spannkraft genutzt wird, da so während der gesamten Dauer der Einspannung eines Werkstücks oder eines Werkzeuges eine Kontrolle des Spannzustandes unter Sicherheitsaspekten möglich ist. In diesem Zusammenhang bietet es sich dann an, dass eine Abweichung von der vorgegebenen Geberdifferenz dem Hubkontrollsystem gemeldet wird, dass bei Spannfuttern bekannt ist und genutzt werden kann, bei Abweichungen von einem sicheren Spannzustand, eine Meldung abzugeben oder sogar eine Abbremsung bis zum Stillstand des Spannfutters zu bewirken.Under safety aspects, it is favorable if the encoder difference is monitored during the tensioned state, in particular if the encoder difference is used as a controlled variable for the automatic maintenance of the clamping force, so as to control the clamping state in safety aspects during the entire period of clamping a workpiece or a tool is. In this context, it then makes sense that a deviation from the given encoder difference is reported to the Hubkontrollsystem that is known and can be used with chucks, in deviations from a safe clamping state to give a message or even a deceleration to a standstill of the chuck to effect.
Der die Vorrichtung betreffenden Teil der Aufgabe wird gelöst durch eine Vorrichtung, die dadurch gekennzeichnet ist, dass ein Elektrospanner mit einem an der Arbeitsspindel einer Werkzeugmaschine befestigbaren Gehäuse vorgesehen ist, in dem eine axial verstellbare Gewindestange zur Verstellung der Spannbacken eines Spannfutters gelagert ist, die mittels einer Spindelmutter verstellbar ist, auf die ein elektrischer Stellmotor einwirkt, dessen Motor in Antriebsverbindung mit der Spindelmutter steht, dass die Spindelmutter axial zwischen zwei Federpaketen eingebettet ist, und dass der Gewindestange ein erster Sensor zur Positionserfassung und der Spindelmutter ein zweiter Sensor zur Positionserfassung zugeordnet ist. Diese Vorrichtung zeichnet sich durch ihren konstruktiv einfachen Aufbau auf, bei dem gegenüber dem bekannten Stand der Technik im wesentlichen nur die Federpakete sowie der zweite Sensor ergänzt werden müssen, dessen Signale herangezogen werden, um in Vergleich zu dem ersten Sensor die Geberdifferenz zu bestimmen.The part of the object relating to the device is achieved by a device which is characterized in that an electro-tensioner is provided with a housing which can be fastened to the work spindle of a machine tool and in which an axially adjustable threaded rod for adjusting the clamping jaws of a chuck is mounted a spindle nut is adjustable, which acts on an electric servomotor whose motor is in driving connection with the spindle nut, that the spindle nut is embedded axially between two spring assemblies, and that the threaded rod is associated with a first sensor for position detection and the spindle nut, a second sensor for position detection , This device is characterized by its structurally simple construction, in which compared to the known prior art essentially only the spring packs and the second sensor must be supplemented, whose signals are used to determine the encoder difference in comparison to the first sensor.
Wiederum hinsichtlich der Einfachheit des Aufbaus ist es günstig, wenn die Spindelmutter über Mitnahmebolzen mit einem außen am Gehäuse geführten Schaltring verbunden ist, dem der zweite Sensor zugeordnet ist, da eine derartige Gestaltung es ermöglicht, die bei bekannten Hubkontrollsystemen gemachten Erfahrungen und Bauteile einzusetzen.Again, in terms of simplicity of construction, it is advantageous if the spindle nut is connected via driving pin with a guided outside the housing switching ring to which the second sensor is assigned, since such a design makes it possible to use the experience and components made in known Hubkontrollsystemen.
Es ist zu beachten, dass für die Kontrolle des Spannzustandes kein großer Verstellweg für die Spindelmutter innerhalb des Gehäuses bereitgehalten werden muss, also die Baulänge des Gehäuses im wesentlichen unverändert beibehalten werden kann, da es ausreichend ist, dass der Spindelmutter innerhalb des Gehäuses ein Verstellweg von 1,5 mm bis 5,0 mm, vorzugsweise von 2,0 bis 3,5 mm zugeordnet ist. It should be noted that for the control of the clamping state no large adjustment for the spindle nut must be kept within the housing, so the overall length of the housing can be maintained substantially unchanged, since it is sufficient that the spindle nut within the housing an adjustment of 1.5 mm to 5.0 mm, preferably from 2.0 to 3.5 mm.
Der Platzbedarf für die erfindungsgemäße Vorrichtung lässt sich auch dadurch begrenzen, dass in der Spindelmutter Taschen für die Aufnahme der Federpakete ausgebildet sind, wobei die Taschen zugleich auch als Führung für die Federpakete dienen.The space required for the device according to the invention can also be limited by the fact that pockets are formed in the spindle nut for receiving the spring assemblies, the pockets also serving as guides for the spring assemblies.
Im folgenden wird die Erfindung an einem in der Zeichnung dargestellten Ausführungsbeispiel näher erläutert; es zeigen:In the following the invention will be explained in more detail in an embodiment shown in the drawing; show it:
In der Zeichnung ist ein Elektrospanner
Die Spindelmutter
Mit einem derartigen Elektrospanner
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- Elektrospannerelectric tensioner
- 22
- Gehäusecasing
- 33
- Gewindestangethreaded rod
- 44
- Stellmotorservomotor
- 55
- Riemenantriebbelt drive
- 66
- Antriebsraddrive wheel
- 77
- Spindelmutterspindle nut
- 88th
- Federpaketspring assembly
- 99
- Taschebag
- 1010
- Mitnahmebolzendriving pins
- 1111
- Schaltringswitching ring
- 1212
- Geberdifferenzencoder difference
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 102006050980 A1 [0002] DE 102006050980 A1 [0002]
- DE 102006015918 A1 [0002] DE 102006015918 A1 [0002]
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202009018679U DE202009018679U1 (en) | 2009-10-02 | 2009-10-02 | Device for clamping a tool or a workpiece |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202009018679U DE202009018679U1 (en) | 2009-10-02 | 2009-10-02 | Device for clamping a tool or a workpiece |
Publications (1)
Publication Number | Publication Date |
---|---|
DE202009018679U1 true DE202009018679U1 (en) | 2012-09-10 |
Family
ID=69144588
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE202009018679U Expired - Lifetime DE202009018679U1 (en) | 2009-10-02 | 2009-10-02 | Device for clamping a tool or a workpiece |
Country Status (1)
Country | Link |
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DE (1) | DE202009018679U1 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006015918A1 (en) | 2005-05-12 | 2006-11-16 | E. Hawle Armaturenwerke Gmbh | valves |
DE102006050980A1 (en) | 2006-10-26 | 2008-06-05 | Böck, Klaus | Silo system e.g. flat silo, covering and sealing method, involves covering, sealing and fastening foil at silo surface with cover of longitudinal and/or horizontal strips by pressing foil edge on silo surface |
-
2009
- 2009-10-02 DE DE202009018679U patent/DE202009018679U1/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006015918A1 (en) | 2005-05-12 | 2006-11-16 | E. Hawle Armaturenwerke Gmbh | valves |
DE102006050980A1 (en) | 2006-10-26 | 2008-06-05 | Böck, Klaus | Silo system e.g. flat silo, covering and sealing method, involves covering, sealing and fastening foil at silo surface with cover of longitudinal and/or horizontal strips by pressing foil edge on silo surface |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R207 | Utility model specification |
Effective date: 20121031 |
|
R150 | Utility model maintained after payment of first maintenance fee after three years |
Effective date: 20121017 |
|
R151 | Utility model maintained after payment of second maintenance fee after six years | ||
R152 | Utility model maintained after payment of third maintenance fee after eight years | ||
R071 | Expiry of right |