EP2803446B1 - Clamping device - Google Patents

Clamping device Download PDF

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Publication number
EP2803446B1
EP2803446B1 EP14165541.5A EP14165541A EP2803446B1 EP 2803446 B1 EP2803446 B1 EP 2803446B1 EP 14165541 A EP14165541 A EP 14165541A EP 2803446 B1 EP2803446 B1 EP 2803446B1
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EP
European Patent Office
Prior art keywords
clamping
gripping
clamping device
base body
adjustable
Prior art date
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Application number
EP14165541.5A
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German (de)
French (fr)
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EP2803446A1 (en
Inventor
Marcel Schlüssel
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.)
Gressel AG
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Gressel AG
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Publication date
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Publication of EP2803446A1 publication Critical patent/EP2803446A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B1/00—Vices
    • B25B1/24—Details, e.g. jaws of special shape, slideways
    • B25B1/2405—Construction of the jaws
    • B25B1/2478—Construction of the jaws with more than one pair of jaws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B1/00—Vices
    • B25B1/06—Arrangements for positively actuating jaws
    • B25B1/10—Arrangements for positively actuating jaws using screws
    • B25B1/12—Arrangements for positively actuating jaws using screws with provision for disengagement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B1/00—Vices
    • B25B1/24—Details, e.g. jaws of special shape, slideways
    • B25B1/2489—Slideways

Definitions

  • the invention relates to a clamping device for clamping at least one workpiece according to the preamble of claim 1.
  • Such a clamping device is from the EP 1 043 124 A1 known. This has a arranged on a support fixed jaw and arranged on the support adjustable jaw with a form-fitting aufspann- on the support and anchored support block and an adjustable relative to the support block Nachspannbacke on.
  • the support block of the adjustable clamping jaw is guided displaceably via a guide wedge within a T-slot guide of the carrier and can be fixed by a clamping device.
  • the clamping device consists of a rotatably mounted in the guide wedge eccentric shaft and a displaceable by rotation of the shaft clamping device, which contains on shoulders of the T-slot guide strips.
  • One from the WO 2007/031296 A1 known clamping device includes a plurality of arranged on a rail-shaped body clamping jaws containing a fixable by means of a clamping device on the base body and a base part adjustable relative to the clamping part.
  • the clamping device for fixing the base part on the base body consists in this known multiple tensioner of two displaceable transversely to the adjustment jaws having on its outer side a plurality of thread-like longitudinal grooves for positive engagement in corresponding longitudinal grooves on the inside of two mutually parallel side cheeks of the body.
  • the production of the longitudinal grooves on the base body and the corresponding longitudinal grooves on the two jaws is relatively complex.
  • such a clamp connection is also sensitive to contamination and must therefore be separately protected or kept carefully clean.
  • the object of the invention is to provide a clamping device of the type mentioned, which can be easily manufactured and is insensitive to contamination.
  • clamping device for releasably fixing a base part of the clamping jaw on the base designed clamping device aligned in the direction of the longitudinal axis of the base body clamping pins which are adjustable transversely to the longitudinal axis of the body to engage under the inner sides of two side cheeks of the body in the direction of its longitudinal axis extending clamping lugs ,
  • clamping pins which are adjustable transversely to the longitudinal axis of the body to engage under the inner sides of two side cheeks of the body in the direction of its longitudinal axis extending clamping lugs
  • the locking of the jaws is done by the expandable clamping pins, which are first pressed to clamp outward and then pull the base of the jaw against the body.
  • the moving apart and together of the clamping pins for clamping and releasing the clamping device is effected by a relative to the base part by at least one clamping screw adjustable clamping piece.
  • the clamping piece is wedge-shaped and has on its longitudinal sides two opposite oblique side surfaces with a recess for abutment of the clamping pins.
  • the jaws can be easily removed from this at any point of the Grundgropers and offset. By lying in the middle clamping device of the jaws also different jaws can be used on identical bodies.
  • the clamping jaws are extremely compact and the clamping device exerts no disturbing influence on the outer contour of the clamping jaws, so that as many workpieces can be stretched and there is optimal access to the workpieces for their processing.
  • the clamping jaws are easy to operate and can be operated with a single key for moving and clamping.
  • the clamping lugs on the underside have a rounded clamping surface for abutment of the clamping pin.
  • the rounding of the clamping surface is preferably matched to the contour of the clamping pins. This achieves a good clamping effect.
  • a toothing for engagement in a corresponding toothing on the base body is provided on the base part.
  • a toothing for engagement in a corresponding toothing on the base body is provided on the base part.
  • the at least one clamping screw may e.g. pass through the base part and engage in a threaded bore of the clamping piece.
  • the adjustment of the clamping part of the clamping jaw can be done by at least one clamping screw, which also engages in a threaded bore in the clamping piece.
  • the clamping screw can also be used to tighten the clamping piece and to increase the clamping force.
  • the at least one clamping screw and the at least one clamping screw are preferably arranged such that they run obliquely and parallel to each other through the base body.
  • the side surfaces of the clamping piece can be designed with different inclinations and / or radii.
  • the clamping pins can be guided in a guide member against each other slidably pressed by springs against the clamping piece. Instead of or additional, the clamping pins can also be guided by guide pins.
  • the adjustable clamping part of the clamping jaw is slidably guided via an oblique guide pin within an oblique bore of the base part and supported by rear inclined surfaces on front inclined surfaces of an upper portion of the base part.
  • the clamping device can be designed as a single clamping device with a fixed jaw and a single adjustable clamping jaw or as a multiple vice with multiple on a base body in series juxtaposed adjustable clamping jaws.
  • the in FIG. 1 in a perspective clamping device includes a rail-shaped base body 1, for example, clamped on a machine table of a machine tool or attached to a tenter with several distributed over the circumference multiple tensioners.
  • the main body 1 has a U-shaped cross section with two side cheeks 2 and 3 spaced apart from one another.
  • the main body 1 may be made in one piece, but may for example consist of a base plate and two side walls 2 and 3 bolted. At the top of the two side walls 2 and 3 of the base body 1 is a in the FIGS. 4 and 6 recognizable toothing 4 provided.
  • the clamping device is designed as a multiple clamp and on the base body 1, a jaw 5 and a plurality of adjustable clamping jaws 6 are mounted.
  • the arranged in series adjustable clamping jaws 6 have a base body 1 fixable base part 7 and a contrast adjustable clamping part 8.
  • FIG. 2 shows the base part 7 of the clamping jaw 6 shown there in an exploded view at an upper portion 9 a fixed clamping surface 10 and the adjustable clamping part 8 has an opposite the fixed clamping surface 10 adjustable clamping surface 11.
  • the base part 7 also includes on its underside a toothing 12 for engagement with the toothing 4 at the top of the rail-shaped main body 1.
  • the adjustable clamping part 8 with the adjustable clamping surface 11 is over an obliquely to the clamping surface 11 extending guide pin 13 slidably guided within an oblique bore 14 of the base member 7 and supported by rear inclined surfaces 15 at front inclined surfaces 16 at the upper portion 9 of the base part 7.
  • a clamping screw 18 which engages in a threaded bore 19 in a wedge-shaped clamping piece 20 of a locking device 21.
  • two further threaded holes 22 are provided for engagement of two arranged in oblique holes 23 in the base part 7 clamping screws 24.
  • locking device 21 includes in addition to the wedge-shaped clamping piece 20 two extending in the direction of the longitudinal axis of the base body 1 clamping pins 25 which are guided by a guide member 26 against each other slidably and biased by two springs 27 inwardly.
  • the wedge-shaped in cross-section clamping piece 20 has a downward increasing width and has on its longitudinal sides two opposite inclined side surfaces 28 with an inwardly bent upper recess 29 for abutment of the clamping pins 25.
  • each have an annular groove 30 is provided.
  • the two eyelet-shaped ends 31 of e.g. from a wire meandering curved springs 27 a.
  • the clamping pins 25 are also guided in guide slots 32 of the plate-shaped guide member 26 transversely to the longitudinal axis of the base body 1 slidably.
  • guide pins 36 for guiding the clamping pins 25 are arranged.
  • the side cheeks 3 and 4 on their inner sides in each case an inwardly projecting and extending in the longitudinal direction of the base body 1 Clamping 33 with a rounded lower clamping surface 34 at the step-shaped transition.
  • a receiving channel 35 is formed with a step-like narrowing to the top cross section.
  • the rounding of the lower clamping surface 34 is adapted to the contour of the cylindrical clamping pins 25.
  • the clamping piece 20 with the two recesses 29 is designed such that the largest width of the clamping piece 20 and the distance between the arranged in the recesses 29 clamping pins 25 is slightly less than the width of the opening 35 between two inwardly projecting lugs 33 of the two side walls. 2 and 3, so that the clamping jaw 6 can be easily removed in the release position upwards from the base body 1 or inserted into this.
  • the clamping piece 10 By tightening the clamping screws 24, the clamping piece 10 can be pulled against the base part 7, wherein the two clamping pins 25 are pushed out of the recesses 29 and pressed by the inclined side surfaces 28 to the outside. The clamping pins 25 then engage under the clamping lugs 33 on the base body 1 and get into the in the FIGS. 5 and 6
  • the base member 7 is then drawn with its lower teeth 12 in the upper toothing 4 of the rail-shaped main body 1, resulting in a positive and non-positive connection between the base part 7 and the basic body 1 results.
  • FIG. 1 It can be seen that the fixed clamping surfaces 10 on the base part 7 and the adjustable clamping surfaces 11 on the clamping part 8 of two juxtaposed clamping jaws 6 opposite each other, so that workpieces between the fixed clamping surfaces 10 and the adjustable clamping jaws 11 of two successive jaws 6 can be stretched.
  • the clamping screws 24 can be released, whereby the clamping piece 10 is lowered relative to the base part 7 and the two clamping pins 25 are pulled by the springs 27 back into the recesses 29. Thereby, the jaw 6 can be removed from the receiving channel 35 upwards and easily offset.

Description

Die Erfindung betrifft eine Spannvorrichtung zum Spannen von mindestens einem Werkstück nach dem Oberbegriff des Anspruchs 1.The invention relates to a clamping device for clamping at least one workpiece according to the preamble of claim 1.

Eine derartige Spannvorrichtung ist aus der EP 1 043 124 A1 bekannt. Diese weist eine an einem Träger angeordnete feste Spannbacke und eine an dem Träger angeordnete verstellbare Spannbacke mit einem am Träger formschlüssig aufspann- und verankerbaren Auflageblock und einer gegenüber dem Auflageblock verstellbaren Nachspannbacke auf. Der Auflageblock der verstellbaren Spannbacke ist über einen Führungskeil innerhalb einer T-Nutführung des Trägers verschiebbar geführt und kann über eine Spannvorrichtung fixiert werden. Die Spannvorrichtung besteht aus einer im Führungskeil drehbar gelagerten exzentrischen Welle und einer durch Drehung der Welle verschiebbaren Klemmvorrichtung, die auf Schultern der T-Nutführung einwirkende Leisten enthält.Such a clamping device is from the EP 1 043 124 A1 known. This has a arranged on a support fixed jaw and arranged on the support adjustable jaw with a form-fitting aufspann- on the support and anchored support block and an adjustable relative to the support block Nachspannbacke on. The support block of the adjustable clamping jaw is guided displaceably via a guide wedge within a T-slot guide of the carrier and can be fixed by a clamping device. The clamping device consists of a rotatably mounted in the guide wedge eccentric shaft and a displaceable by rotation of the shaft clamping device, which contains on shoulders of the T-slot guide strips.

Eine aus der WO 2007/031296 A1 bekannte Spannvorrichtung enthält mehrere an einem schienenförmigen Grundkörper angeordnete Spannbacken, die ein mittels einer Klemmeinrichtung am Grundkörper fixierbares Basisteil und ein gegenüber dem Basisteil verstellbares Spannteil enthalten. Die Klemmeinrichtung zur Fixierung des Basisteils am Grundkörper besteht bei diesem bekannten Mehrfachspanner aus zwei quer zur Verstellrichtung verschiebbaren Klemmbacken, die an ihrer Außenseite mehrere gewindeartige Längsrillen zum formschlüssigen Eingriff in dazu korrespondierende Längsrillen an der Innenseite zweier zueinander paralleler Seitenwangen des Grundkörpers aufweisen. Die Fertigung der Längsrillen an dem Grundkörper und der dazu korrespondierenden Längsrillen an den beiden Klemmbacken ist jedoch relativ aufwändig. Außerdem ist eine derartige Klemmverbindung auch empfindlich gegen Verschmutzung und muss daher gesondert geschützt oder sorgfältig sauber gehalten werden.One from the WO 2007/031296 A1 known clamping device includes a plurality of arranged on a rail-shaped body clamping jaws containing a fixable by means of a clamping device on the base body and a base part adjustable relative to the clamping part. The clamping device for fixing the base part on the base body consists in this known multiple tensioner of two displaceable transversely to the adjustment jaws having on its outer side a plurality of thread-like longitudinal grooves for positive engagement in corresponding longitudinal grooves on the inside of two mutually parallel side cheeks of the body. However, the production of the longitudinal grooves on the base body and the corresponding longitudinal grooves on the two jaws is relatively complex. In addition, such a clamp connection is also sensitive to contamination and must therefore be separately protected or kept carefully clean.

Aufgabe der Erfindung ist es, eine Spannvorrichtung der eingangs genannten Art zu schaffen, die einfach hergestellt werden kann und unempfindlich gegen Verschmutzung ist.The object of the invention is to provide a clamping device of the type mentioned, which can be easily manufactured and is insensitive to contamination.

Diese Aufgabe wird durch eine Spannvorrichtung mit den Merkmalen des Anspruchs 1 gelöst. Zweckmäßige Ausführungsformen und vorteilhafte Weiterbildungen der Erfindung sind Gegenstand der Unteransprüche.This object is achieved by a clamping device having the features of claim 1. Advantageous embodiments and advantageous developments of the invention are the subject of the dependent claims.

Bei der erfindungsgemäßen Spannvorrichtung enthält die zur lösbaren Fixierung eines Basisteils der Spannbacke an dem Grundkörper konzipierte Klemmeinrichtung in Richtung der Längsachse des Grundkörpers ausgerichtete Klemmstifte, die zum Untergreifen an den Innenseiten zweier Seitenwangen des Grundkörpers in Richtung seiner Längsachse verlaufender Klemmansätze quer zur Längsachse des Grundkörpers verstellbar sind. Eine derartige Klemmeinrichtung kann kostengünstig hergestellt werden und ist unempfindlicher gegen Verschmutzung. Die Klemmkörper sind einfach zu fertigende Klemmstifte und die zu den Klemmstiften gehörenden Klemmflächen sind besonders gut gegen Verschmutzung geschützt. In der Funktionsstellung der Spannbacken ist die Klemmeinrichtung im Inneren des Grundkörpers untergebracht und daher gut gegen Verschmutzung durch Späne oder andere Bearbeitungsrückstände abgeschirmt. Die Verriegelung der Spannbacken erfolgt durch die spreizbaren Klemmstifte, die zum Klemmen zunächst nach außen gedrückt werden und dann das Basisteil der Spannbacke gegen den Grundkörper ziehen. Das Auseinander- und Zusammenfahren der Klemmstifte zum Klemmen und Lösen der Klemmeinrichtung erfolgt durch ein gegenüber dem Basisteil durch mindestens eine Klemmschraube verstellbares Klemmstück. Das Klemmstück ist keilförmig ausgebildet und weist an seinen Längsseiten zwei gegenüberliegende schräge Seitenflächen mit einer Vertiefung zur Anlage der Klemmstifte auf. Die Spannbacken können an beliebigen Stellen des Grundköpers einfach aus diesem entfernt und versetzt werden. Durch die in der Mitte liegende Klemmeinrichtung der Spannbacken können außerdem auch unterschiedliche Spannbacken auf identischen Grundkörpern genutzt werden. Die Spannbacken sind äußerst kompakt aufgebaut und die Klemmeinrichtung übt keinen störenden Einfluss auf die Außenkontur der Spannbacken auf, so dass möglichst viele Werkstücke gespannt werden können und ein optimaler Zugang zu den Werkstücken für deren Bearbeitung besteht. Die Spannbacken sind einfach bedienbar und können mit einem einzigen Schlüssel zum Versetzen und Spannen betätigt werden.In the clamping device according to the invention for releasably fixing a base part of the clamping jaw on the base designed clamping device aligned in the direction of the longitudinal axis of the base body clamping pins which are adjustable transversely to the longitudinal axis of the body to engage under the inner sides of two side cheeks of the body in the direction of its longitudinal axis extending clamping lugs , Such a clamping device can be produced inexpensively and is less sensitive to contamination. The clamp bodies are easy to produce clamping pins and the clamping pins belonging to clamping surfaces are particularly well protected against contamination. In the functional position of the clamping jaws the clamping device is housed inside the body and therefore well shielded against contamination by chips or other machining residues. The locking of the jaws is done by the expandable clamping pins, which are first pressed to clamp outward and then pull the base of the jaw against the body. The moving apart and together of the clamping pins for clamping and releasing the clamping device is effected by a relative to the base part by at least one clamping screw adjustable clamping piece. The clamping piece is wedge-shaped and has on its longitudinal sides two opposite oblique side surfaces with a recess for abutment of the clamping pins. The jaws can be easily removed from this at any point of the Grundköpers and offset. By lying in the middle clamping device of the jaws also different jaws can be used on identical bodies. The clamping jaws are extremely compact and the clamping device exerts no disturbing influence on the outer contour of the clamping jaws, so that as many workpieces can be stretched and there is optimal access to the workpieces for their processing. The clamping jaws are easy to operate and can be operated with a single key for moving and clamping.

In einer besonders vorteilhaften Ausführung weisen die Klemmansätze an der Unterseite eine abgerundete Klemmfläche zur Anlage des Klemmstifts auf. Die Rundung der Klemmfläche ist vorzugsweise auf die Kontur der Klemmstifte abgestimmt. Dadurch ist eine gute Klemmwirkung erreichbar.In a particularly advantageous embodiment, the clamping lugs on the underside have a rounded clamping surface for abutment of the clamping pin. The rounding of the clamping surface is preferably matched to the contour of the clamping pins. This achieves a good clamping effect.

Zweckmäßigerweise ist an dem Basisteil eine Verzahnung zum Eingriff in eine dazu korrespondierende Verzahnung am Grundkörper vorgesehen. Dadurch kann neben einer kraftschlüssigen auch eine formschlüssige Verbindung zwischen dem Basisteil und dem Grundkörper erreicht werden.Appropriately, a toothing for engagement in a corresponding toothing on the base body is provided on the base part. As a result, in addition to a non-positive and a positive connection between the base part and the base body can be achieved.

Die mindestens eine Klemmschraube kann z.B. durch das Basisteil verlaufen und in eine Gewindebohrung des Klemmstücks eingreifen. Die Verstellung des Spannteils der Spannbacke kann durch mindestens eine Spannschraube erfolgen, die ebenfalls in eine Gewindebohrung im Klemmstück eingreift. Die Spannschraube kann so ebenfalls zur Anziehen des Klemmstücks und zur Erhöhung der Klemmkraft genutzt werden. Die mindestens eine Klemmschraube und die mindestens eine Spannschraube sind vorzugsweise derart angeordnet, dass sie schräg und zueinander parallel durch den Basiskörper verlaufen.The at least one clamping screw may e.g. pass through the base part and engage in a threaded bore of the clamping piece. The adjustment of the clamping part of the clamping jaw can be done by at least one clamping screw, which also engages in a threaded bore in the clamping piece. The clamping screw can also be used to tighten the clamping piece and to increase the clamping force. The at least one clamping screw and the at least one clamping screw are preferably arranged such that they run obliquely and parallel to each other through the base body.

Die Seitenflächen des Klemmstücks können mit unterschiedlichen Neigungen und/oder Radien ausgeführt sein. Die Klemmstifte können in einem Führungsteil gegeneinander verschiebbar geführt sein durch Federn gegen das Klemmstück gedrückt werden. Anstelle oder zusätzliche können die Klemmstifte aber auch durch Führungsstifte geführt sein.The side surfaces of the clamping piece can be designed with different inclinations and / or radii. The clamping pins can be guided in a guide member against each other slidably pressed by springs against the clamping piece. Instead of or additional, the clamping pins can also be guided by guide pins.

In einer weiteren zweckmäßigen Ausführung ist das verstellbare Spannteil der Spannbacke über einen schrägen Führungszapfen innerhalb einer schrägen Bohrung des Basisteils verschiebbar geführt und über hintere Schrägflächen an vorderen Schrägflächen eines oberen Bereichs des Basisteils abgestützt.In a further expedient embodiment, the adjustable clamping part of the clamping jaw is slidably guided via an oblique guide pin within an oblique bore of the base part and supported by rear inclined surfaces on front inclined surfaces of an upper portion of the base part.

Die Spannvorrichtung kann als Einzelspannvorrichtung mit einer Festbacke und einer einzigen verstellbaren Spannbacke oder als Mehrfachspanner mit mehreren an einem Grundkörper in Reihe nebeneinander angeordneten verstellbaren Spannbacken ausgeführt sein.The clamping device can be designed as a single clamping device with a fixed jaw and a single adjustable clamping jaw or as a multiple vice with multiple on a base body in series juxtaposed adjustable clamping jaws.

Weitere Besonderheiten und Vorzüge der Erfindung ergeben sich aus der folgenden Beschreibung eines bevorzugten Ausführungsbeispiels anhand der Zeichnung. Es zeigen:

Figur 1
eine erfindungsgemäße Spannvorrichtung in einer Perspektive;
Figur 2
eine verstellbare Spannbacke der Spannvorrichtung von Figur 1 in einer Explosionsdarstellung;
Figur 3
eine verstellbare Spannbacke in einer vorgespannten Stellung;
Figur 4
eine Seitenansicht der Spannvorrichtung von Figur 1 mit einer Spannbacke in einer Lösestellung;
Figur 5
eine verstellbare Spannbacke in einer Klemmstellung und
Figur 6
eine Seitenansicht der Spannvorrichtung von Figur 1 mit einer Spannbacke in einer Klemmstellung.
Other features and advantages of the invention will become apparent from the following description of a preferred embodiment with reference to the drawings. Show it:
FIG. 1
a tensioning device according to the invention in a perspective;
FIG. 2
an adjustable jaw of the clamping device of FIG. 1 in an exploded view;
FIG. 3
an adjustable jaw in a biased position;
FIG. 4
a side view of the clamping device of FIG. 1 with a clamping jaw in a release position;
FIG. 5
an adjustable jaw in a clamping position and
FIG. 6
a side view of the clamping device of FIG. 1 with a clamping jaw in a clamping position.

Der in Figur 1 in einer Perspektive dargestellte Spannvorrichtung enthält einen schienenförmigen Grundkörper 1, der z.B. auf einen Maschinentisch einer Werkzeugmaschine aufgespannt oder an einem Spannturm mit mehreren über den Umfang verteilten Mehrfachspannern befestigt werden kann. Der Grundkörper 1 weist beim gezeigten Ausführungsbeispiel einen U-förmigen Querschnitt mit zwei voneinander beabstandeten Seitenwangen 2 und 3 auf. Der Grundkörper 1 kann einteilig ausgeführt sein, kann aber z.B. auch aus einer Grundplatte und zwei angeschraubten Seitenwangen 2 und 3 bestehen. An der Oberseite der beiden Seitenwangen 2 und 3 des Grundkörpers 1 ist eine in den Figuren 4 und 6 erkennbare Verzahnung 4 vorgesehen.The in FIG. 1 in a perspective clamping device includes a rail-shaped base body 1, for example, clamped on a machine table of a machine tool or attached to a tenter with several distributed over the circumference multiple tensioners. In the exemplary embodiment shown, the main body 1 has a U-shaped cross section with two side cheeks 2 and 3 spaced apart from one another. The main body 1 may be made in one piece, but may for example consist of a base plate and two side walls 2 and 3 bolted. At the top of the two side walls 2 and 3 of the base body 1 is a in the FIGS. 4 and 6 recognizable toothing 4 provided.

Bei der in Figur 1 gezeigten Ausführung ist die Spannvorrichtung als Mehrfachspanner ausgebildet und auf dem Grundkörper 1 sind eine Festbacke 5 und mehrere verstellbare Spannbacken 6 montiert. Die in Reihe angeordneten verstellbaren Spannbacken 6 weisen ein am Grundkörper 1 fixierbares Basisteil 7 und ein demgegenüber verstellbares Spannteil 8 auf.At the in FIG. 1 As shown embodiment, the clamping device is designed as a multiple clamp and on the base body 1, a jaw 5 and a plurality of adjustable clamping jaws 6 are mounted. The arranged in series adjustable clamping jaws 6 have a base body 1 fixable base part 7 and a contrast adjustable clamping part 8.

Wie besonders aus Figur 2 hervorgeht, enthält das Basisteil 7 der dort in einer Explosionsdarstellung gezeigten Spannbacke 6 an einem oberen Bereich 9 eine feste Spannfläche 10 und das verstellbare Spannteil 8 weist eine gegenüber der festen Spannfläche 10 verstellbare Spannfläche 11 auf. Das Basisteil 7 enthält außerdem an seiner Unterseite eine Verzahnung 12 zum Eingriff mit der Verzahnung 4 an der Oberseite des schienenförmigen Grundkörpers 1. Das verstellbare Spannteil 8 mit der verstellbaren Spannfläche 11 ist über einen schräg zur Spannfläche 11 verlaufenden Führungszapfen 13 innerhalb einer schrägen Bohrung 14 des Basisteils 7 verschiebbar geführt und über hintere Schrägflächen 15 an vorderen Schrägflächen 16 am oberen Bereich 9 des Basisteils 7 abgestützt. In einer schrägen Bohrung 17 im Spannteil 8 sitzt eine Spannschraube 18, die in eine Gewindebohrung 19 in einem keilförmigen Klemmstück 20 einer Verriegelungseinrichtung 21 eingreift. In dem Klemmstück 20 sind zwei weitere Gewindebohrungen 22 zum Eingriff zweier in schrägen Bohrungen 23 im Basisteil 7 angeordneter Klemmschrauben 24 vorgesehen.How special FIG. 2 shows the base part 7 of the clamping jaw 6 shown there in an exploded view at an upper portion 9 a fixed clamping surface 10 and the adjustable clamping part 8 has an opposite the fixed clamping surface 10 adjustable clamping surface 11. The base part 7 also includes on its underside a toothing 12 for engagement with the toothing 4 at the top of the rail-shaped main body 1. The adjustable clamping part 8 with the adjustable clamping surface 11 is over an obliquely to the clamping surface 11 extending guide pin 13 slidably guided within an oblique bore 14 of the base member 7 and supported by rear inclined surfaces 15 at front inclined surfaces 16 at the upper portion 9 of the base part 7. In an oblique bore 17 in the clamping part 8 sits a clamping screw 18 which engages in a threaded bore 19 in a wedge-shaped clamping piece 20 of a locking device 21. In the clamping piece 20, two further threaded holes 22 are provided for engagement of two arranged in oblique holes 23 in the base part 7 clamping screws 24.

Die in Figur 2 dargestellte Verriegelungseinrichtung 21 enthält neben dem keilförmigen Klemmstück 20 zwei in Richtung der Längsachse des Grundkörpers 1 verlaufende Klemmstifte 25, die durch ein Führungsteil 26 gegeneinander verschiebbar geführt und durch zwei Federn 27 nach innen vorgespannt sind. Das im Querschnitt keilförmige Klemmstück 20 hat eine nach unten zunehmende Breite und weist an seinen Längsseiten zwei gegenüberliegende schräge Seitenflächen 28 mit einer nach innen gebogenen oberen Vertiefung 29 zur Anlage der Klemmstifte 25 auf.In the FIG. 2 shown locking device 21 includes in addition to the wedge-shaped clamping piece 20 two extending in the direction of the longitudinal axis of the base body 1 clamping pins 25 which are guided by a guide member 26 against each other slidably and biased by two springs 27 inwardly. The wedge-shaped in cross-section clamping piece 20 has a downward increasing width and has on its longitudinal sides two opposite inclined side surfaces 28 with an inwardly bent upper recess 29 for abutment of the clamping pins 25.

An den beiden Enden der Klemmstifte 25 ist jeweils eine Ringnut 30 vorgesehen. In diese Ringnut 30 greifen die beiden in Form einer Öse gebogenen Enden 31 der z.B. aus einem Draht mäanderförmig gebogenen Federn 27 ein. Über eine der Ringnuten 30 an dem einen Ende der Klemmstifte 25 sind die Klemmstifte 25 außerdem in Führungsschlitzen 32 des plattenförmigen Führungsteils 26 quer zur Längsachse des Grundkörpers 1 verschiebbar geführt. In dem Basisteil 7 sind außerdem Führungsstifte 36 zur Führung der Klemmstifte 25 angeordnet. Durch die beiden Federn 27 werden die beiden zylindrischen Klemmstifte 25 gegen die schrägen Seitenflächen 28 des Klemmstücks 20 gedrückt.At the two ends of the clamping pins 25 each have an annular groove 30 is provided. In this annular groove 30, the two eyelet-shaped ends 31 of e.g. from a wire meandering curved springs 27 a. About one of the annular grooves 30 at one end of the clamping pins 25, the clamping pins 25 are also guided in guide slots 32 of the plate-shaped guide member 26 transversely to the longitudinal axis of the base body 1 slidably. In the base part 7 also guide pins 36 for guiding the clamping pins 25 are arranged. By the two springs 27, the two cylindrical clamping pins 25 are pressed against the inclined side surfaces 28 of the clamping piece 20.

Durch Absenken bzw. Anheben des Klemmstücks 20 gegenüber dem Basisteil 7 können die Klemmstifte 25 zwischen der in den Figuren 3 und 4 gezeigten Lösestellung und der in den Figuren 5 und 6 gezeigten Klemmstellung bewegt werden. Wie in den Figuren 4 und 6 erkennbar ist, weisen die Seitenwangen 3 und 4 an ihren Innenseiten jeweils einen nach innen ragenden und in Längsrichtung des Grundkörpers 1 verlaufenden Klemmansatz 33 mit einer abgerundeten unteren Klemmfläche 34 an dem stufenförmigen Übergang auf. Zwischen den Seitenwangen 3 und 4 des Grundkörpers 1 wird so ein Aufnahmekanal 35 mit einem sich zur Oberseite stufenförmig verengenden Querschnitt gebildet. Die Rundung der unteren Klemmfläche 34 ist an die Kontur der zylindrischen Klemmstifte 25 angepasst.By lowering or raising the clamping piece 20 relative to the base part 7, the clamping pins 25 between the in the FIGS. 3 and 4 shown release position and in the FIGS. 5 and 6 shown clamping position to be moved. As in the FIGS. 4 and 6 can be seen, the side cheeks 3 and 4 on their inner sides in each case an inwardly projecting and extending in the longitudinal direction of the base body 1 Clamping 33 with a rounded lower clamping surface 34 at the step-shaped transition. Between the side walls 3 and 4 of the main body 1, a receiving channel 35 is formed with a step-like narrowing to the top cross section. The rounding of the lower clamping surface 34 is adapted to the contour of the cylindrical clamping pins 25.

Bei der in den Figuren 3 und 4 gezeigten Lösestellung liegen die beiden in Richtung der Längsachse des Grundkörpers 1 verlaufenden Klemmstifte 25 in den beiden Vertiefungen 29 und werden dort durch die beiden Federn 27 gehalten. Das Klemmstück 20 mit den beiden Vertiefungen 29 ist derart ausgelegt, dass die größte Breite des Klemmstücks 20 und der Abstand zwischen den in den Vertiefungen 29 angeordneten Klemmstiften 25 etwas geringer als die Breite der Öffnung 35 zwischen zwei nach innen vorstehenden Ansätzen 33 der beiden Seitenwangen 2 und 3 ist, so dass die Spannbacke 6 in der Lösestellung ohne weiteres nach oben aus dem Grundkörper 1 entnommen bzw. in diesen eingesetzt werden kann.In the in the FIGS. 3 and 4 shown release position are the two extending in the direction of the longitudinal axis of the base body 1 clamping pins 25 in the two recesses 29 and are held there by the two springs 27. The clamping piece 20 with the two recesses 29 is designed such that the largest width of the clamping piece 20 and the distance between the arranged in the recesses 29 clamping pins 25 is slightly less than the width of the opening 35 between two inwardly projecting lugs 33 of the two side walls. 2 and 3, so that the clamping jaw 6 can be easily removed in the release position upwards from the base body 1 or inserted into this.

Durch Anziehen der Klemmschrauben 24 kann das Klemmstück 10 gegen das Basisteil 7 gezogen werden, wobei die beiden Klemmstifte 25 aus den Vertiefungen 29 herausgedrückt und durch die schrägen Seitenflächen 28 nach außen gedrückt werden. Die Klemmstifte 25 untergreifen dann die Klemmansätze 33 an dem Grundkörper 1 und gelangen in der in den Figuren 5 und 6 gezeigten Klemmstellung zur Anlage an den unteren Klemmflächen 34. Durch weiteres Anziehen der Klemmschrauben 24 wird das Basisteil 7 dann mit seiner unteren Verzahnung 12 in die obere Verzahnung 4 des schienenförmigen Grundkörpers 1 hineingezogen, wodurch sich eine form- und kraftschlüssige Verbindung zwischen dem Basisteil 7 und dem Grundkörper 1 ergibt.By tightening the clamping screws 24, the clamping piece 10 can be pulled against the base part 7, wherein the two clamping pins 25 are pushed out of the recesses 29 and pressed by the inclined side surfaces 28 to the outside. The clamping pins 25 then engage under the clamping lugs 33 on the base body 1 and get into the in the FIGS. 5 and 6 By further tightening the clamping screws 24, the base member 7 is then drawn with its lower teeth 12 in the upper toothing 4 of the rail-shaped main body 1, resulting in a positive and non-positive connection between the base part 7 and the basic body 1 results.

Durch Drehen der Spannschraube 18 kann dann das Spannteil 8 gegenüber dem Basisteil 7 verschoben und so z.B. ein Werkstück zwischen der festen Spannfläche 10 an dem Basisteil 7 und der verstellbaren Spannfläche 11 an dem Spannteil 8 zweier nebeneinander angeordneter Spannbacken 6 gespannt werden. Aus Figur 1 ist ersichtlich, dass die festen Spannflächen 10 an dem Basisteil 7 und die verstellbaren Spannflächen 11 an dem Spannteil 8 zweier nebeneinander angeordneter Spannbacken 6 einander gegenüberliegen, so dass Werkstücke zwischen den festen Spannflächen 10 und den verstellbaren Spannbacken 11 zweier aufeinanderfolgender Spannbacken 6 gespannt werden können.By turning the clamping screw 18, the clamping part 8 can then be displaced relative to the base part 7 and, for example, a workpiece between the fixed clamping surface 10 on the base part 7 and the adjustable clamping surface 11 on the clamping part 8 of two juxtaposed clamping jaws 6 are stretched. Out FIG. 1 It can be seen that the fixed clamping surfaces 10 on the base part 7 and the adjustable clamping surfaces 11 on the clamping part 8 of two juxtaposed clamping jaws 6 opposite each other, so that workpieces between the fixed clamping surfaces 10 and the adjustable clamping jaws 11 of two successive jaws 6 can be stretched.

Zum Versetzen der Spannbacken 6 können die Klemmschrauben 24 gelöst werden, wodurch das Klemmstück 10 gegenüber dem Basisteil 7 abgesenkt wird und die beiden Klemmstifte 25 durch die Federn 27 wieder in die Vertiefungen 29 gezogen werden. Dadurch kann die Spannbacke 6 aus dem Aufnahmekanal 35 nach oben entnommen und einfach versetzt werden.To set the clamping jaws 6, the clamping screws 24 can be released, whereby the clamping piece 10 is lowered relative to the base part 7 and the two clamping pins 25 are pulled by the springs 27 back into the recesses 29. Thereby, the jaw 6 can be removed from the receiving channel 35 upwards and easily offset.

Claims (12)

  1. Clamping device for clamping at least one workpiece, with a base body (1) and at least one clamping jaw (6) arranged on the base body (1) and which contains a base part (7) which can be fixed on the base body (1) by means of a gripping device (21) and a clamping part (8) which is adjustable with respect to the base part (7), wherein the gripping device (21) contains gripping pins (25) aligned in the direction of the longitudinal axis of the base body (1) and which is adjustable transversely to the longitudinal axis of the base body (1) to engage below gripping shoulders (33) running on the inner sides of two side cheeks (3, 4) of the base body (1) in the direction of its longitudinal axis, characterised in that the gripping pins (25) are adjustable via a gripping piece (20) which is adjustable with respect to the base part (7) by at least one gripping screw (24), wherein the gripping piece (20) is designed to be wedge-shaped and contains on its longitudinal sides, two opposing inclined side surfaces (28) with a depression (29) for laying down of the gripping pins (25).
  2. Clamping device according to claim 1, characterised in that the gripping shoulders (33) on the underside have a rounded-off gripping surface (34) for laying down of a gripping pin (25).
  3. Clamping device according to claim 1 or 2, characterised in that toothing (12) for engagement in toothing (4) corresponding thereto on the base body (1) is provided on the base part (8).
  4. Clamping device according to claim 3, characterised in that the at least one gripping screw (24) runs through the base part (8) and engages in a threaded bore (22) of the gripping piece (20).
  5. Clamping device according to one of claims 1 to 4, characterised in that the adjustable clamping part (8) of the clamping jaw (6) is adjustable by at least one clamping screw (18) which engages in a threaded bore (19) in the gripping piece (20).
  6. Clamping device according to claim 5, characterised in that the at least one gripping screw (24) and the at least one clamping screw (18) run through the base body (7) at an angle and parallel to one another.
  7. Clamping device according to one of claims 1 to 6, characterised in that the inclined side surfaces (28) are designed with different slopes and/or radii.
  8. Clamping device according to one of claims 1 to 7, characterised in that the gripping pins (25) are pressed against the gripping piece (20) by springs (27).
  9. Clamping device according to one of claims 1 to 8, characterised in that the gripping pins (25) are guided to be displaceable with respect to one another in a guide part (26).
  10. Clamping device according to one of claims 1 to 9, characterised in that the gripping pins (25) are guided by guide pins (36).
  11. Clamping device according to one of claims 1 to 10, characterised in that the adjustable clamping part (8) is guided to be displaceable via an inclined guide journal (13) within an inclined bore (14) of the base part (7) and supported via rear inclined surfaces (15) on front inclined surfaces (16) of an upper region (9) of the base part (7).
  12. Clamping device according to one of claims 1 to 11, characterised in that several clamping jaws (6) following one another in series are arranged on the base body (1).
EP14165541.5A 2013-05-15 2014-04-23 Clamping device Active EP2803446B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201310104975 DE102013104975B4 (en) 2013-05-15 2013-05-15 jig

Publications (2)

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EP2803446A1 EP2803446A1 (en) 2014-11-19
EP2803446B1 true EP2803446B1 (en) 2019-06-12

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EP (1) EP2803446B1 (en)
DE (1) DE102013104975B4 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017001782B3 (en) * 2017-02-24 2018-04-12 Ludwig Ehrhardt Gmbh Module plate, machining center and method for clamping components

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1043124B1 (en) * 1999-04-09 2005-12-21 Guido Hofer Machinentechnik Device for clamping workpieces
DE20204682U1 (en) * 2002-03-23 2002-05-29 Philipp Mueller & Co Praez Swe Workpiece device for machine tools
DE10302255A1 (en) * 2003-01-22 2004-08-05 Gressel Ag Multiple fixture
CH697684B1 (en) * 2005-09-13 2009-01-15 Triag Multiple clamping device for a machining machine.
DE102007027808B3 (en) * 2007-06-13 2008-08-14 Gressel Ag Vise, for clamping a workpiece, has clamping pad carriers formed as half-shells to shroud the adjustment spindle for moving at least one pad
DE102008060126B4 (en) * 2008-12-03 2012-02-09 Zeroclamp Gmbh clamping system

Non-Patent Citations (1)

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Title
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Publication number Publication date
DE102013104975B4 (en) 2015-02-26
EP2803446A1 (en) 2014-11-19
DE102013104975A1 (en) 2014-12-04

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