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EP1688219A1 - Clamping device with cover element for its spindle recess - Google Patents

Clamping device with cover element for its spindle recess Download PDF

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Publication number
EP1688219A1
EP1688219A1 EP05012918A EP05012918A EP1688219A1 EP 1688219 A1 EP1688219 A1 EP 1688219A1 EP 05012918 A EP05012918 A EP 05012918A EP 05012918 A EP05012918 A EP 05012918A EP 1688219 A1 EP1688219 A1 EP 1688219A1
Authority
EP
European Patent Office
Prior art keywords
spindle
clamping device
base body
clamping
cover element
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.)
Granted
Application number
EP05012918A
Other languages
German (de)
French (fr)
Other versions
EP1688219B1 (en
Inventor
Karl-Heinz Gernand
Robert Czarnetzki
Alois Eschlwech
Ludwig Stadler
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.)
Hb-Feinmechanik & Cokg GmbH
HB FEINMECHANIK GmbH and Co KG
Original Assignee
Hb-Feinmechanik & Cokg GmbH
HB FEINMECHANIK GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hb-Feinmechanik & Cokg GmbH, HB FEINMECHANIK GmbH and Co KG filed Critical Hb-Feinmechanik & Cokg GmbH
Priority to AT05012918T priority Critical patent/ATE345194T1/en
Priority to EP05012918A priority patent/EP1688219B1/en
Priority to ES05012918T priority patent/ES2276372T3/en
Priority to DE502005000189T priority patent/DE502005000189D1/en
Priority to PCT/EP2006/002975 priority patent/WO2006133755A1/en
Publication of EP1688219A1 publication Critical patent/EP1688219A1/en
Application granted granted Critical
Publication of EP1688219B1 publication Critical patent/EP1688219B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B1/00Vices
    • B25B1/24Details, e.g. jaws of special shape, slideways
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B1/00Vices
    • B25B1/06Arrangements for positively actuating jaws
    • B25B1/10Arrangements for positively actuating jaws using screws
    • B25B1/103Arrangements for positively actuating jaws using screws with one screw perpendicular to the jaw faces, e.g. a differential or telescopic screw

Definitions

  • the invention relates to a clamping device with two clamping jaws, of which a first clamping jaw are attached to a base body and a second clamping jaw on a slide which is adjustably mounted along an upper side of the base body by means of a screw, which arranged in a directed to the top spindle recess of the body is.
  • Such a tensioning device is known for example from US-A 5,163,662 or EP-A-0 903 201.
  • a displaceable slide is displaceably mounted within a recess in the main body along guideways.
  • the axial movement is usually carried out by means of a threaded spindle which engages in a corresponding threaded element on the carriage and so forms a known axial drive.
  • the so-called machine vices are usually used on machine tools for clamping the workpieces to be machined.
  • On drilling and milling machines is a machining, wherein small-scale chips are removed while supplying significant amounts of rinsing and cooling liquid from the workpiece.
  • chips in not insignificant amount in the spindle recess of the main body can accumulate. In this case, chips can come to rest on the axial guideways and the threads, which can lead to damage to the surfaces and even to blockages and disturbances of the moving parts.
  • the machine vices are provided with a plurality of openings, so that chips can be easily removed from the spindle recess, in particular by compressed air.
  • the invention has for its object to provide a clamping device, which is particularly well protected against adverse effects of chips and rinsing liquid.
  • the clamping device is characterized in that the spindle recess of the base body is covered by a cover element between the two clamping jaws over an entire adjustment range of the clamping jaws.
  • the cover element thus has a width corresponding to the groove-shaped spindle recess and has a length which extends over the entire span of the clamping jaws, in particular their maximum distance addition.
  • a particularly preferred embodiment of the invention consists in that the base body is U-shaped in cross-section with two side walls, whose end faces directed towards the top are flush with the cover element.
  • the cover element may preferably be flat on its upper side, so that the surface is as smooth as possible. Such an area is particularly easy to clean coming from lying chips.
  • the cover element is plate-shaped and in particular integrally formed on the carriage.
  • This can be an axially projecting plate, which can be flush, ie virtually gap-free, to slide under the suitably designed underside of the fixed first clamping jaw.
  • a one-piece design for example as a cast workpiece, additionally avoids further joints, which improves a good and easy chip removal.
  • the first fixed jaw is arranged at a rear side of the base body, which is opposite to a front on which a spindle actuation, in particular a hand crank, is provided, and that the first clamping jaw a rear plate-shaped cover portion has, which covers the spindle recess of the main body to the rear side.
  • This rear cover can cover only the top or in addition also an open end side of the base body, so that chips can not get out of this area to the spindle.
  • the cover portion may be integrally formed with the first jaw or may be provided as a separate part which closely adjoins the first jaw.
  • the foreclosure of the spindle recess is further improved by the fact that a cover plate is arranged on the carriage, which covers the spindle recess in the region of the second clamping jaw toward the front of the main body. This can largely be prevented from penetrating into the spindle recess from above, even in the region between the carriage and the hand crank.
  • an opening for lubricating the spindle is provided in the cover element.
  • the opening may be provided with a grease nipple or a similar inlet or valve element, which is arranged so recessed in the cover element that a passage of chips and further good cleanability are given.
  • annular lubricating device In the case of extensive shielding of the spindle in the spindle recess, it is advantageous according to the invention for an annular lubricating device to be arranged on the carriage, which is in communication with the opening in the cover element for supplying lubricant.
  • the lubricating device for storing and dispensing lubricant, in particular lubricating oil, to a threaded portion of the spindle has a felt ring and a gap seal.
  • the felt ring serves as a reservoir for receiving and storing oil.
  • felt means any other material which also has the function of picking up, storing and slowly dispensing lubricating oil.
  • the felt ring can thus always ensure a certain wetting, in particular the threaded portion of the spindle.
  • a gap seal is arranged, which is a excessive release of oil from the felt ring to the threaded area prevented.
  • the gap seal is formed according to a threaded nut with threads which meshes with the thread on the spindle, but without touching them directly.
  • the combination of this gap seal with the downstream felt ring ensures that the narrow gap between the gap seal and the threaded area of the spindle is always closed with an oil film. As a result, the penetration of even the finest chip particles and also of rinsing liquid in the sensitive area of the spindle drive is practically avoided.
  • the spindle has a threaded portion and a cylinder portion.
  • a power boosting package may be arranged in the cylinder region or threaded region.
  • an inner receiving space can be formed for this purpose.
  • a power boost package as is known for an operation of machine vices by a hand crank.
  • the covers according to the invention largely prevent coarse chip particles from getting into the spindle recess and thus onto the guide surfaces and the threaded areas.
  • the individual mutually movable parts fit together.
  • the use of sealing elements made of rubber would at best be appropriate in individual cases, since such sealing elements would be damaged and worn very quickly by the sharp-edged metal chips. Without such sealing elements, it can not be ruled out that rinsing liquid can penetrate into the area of the spindle recess.
  • side openings are made in side areas of the main body. These side openings serve for the discharge of rinsing liquid or for their removal, for example by means of compressed air.
  • a tensioning device 10 On a cross-sectionally U-shaped main body 12 with two side walls 22, a first clamping jaw 14 is releasably secured by screws at one end.
  • the base body 12 has along its length a spindle recess 20 which is open toward its upper side 18.
  • a carriage 30 Within the spindle recess 20, a carriage 30 is mounted axially displaceable, which has a second clamping jaw 16 on its upper side.
  • a screw 40 Along the entire length of the spindle recess 20 extends a screw 40, which penetrates the carriage 30.
  • a spindle actuator 46 which may in particular have a hand crank 48, the spindle 40 can be rotated to axially adjust the carriage 30 and thus the second clamping jaw 16 relative to the first clamping jaw 14.
  • a vice clamping device 10 is in one Position shown, in which the maximum adjustment between the two jaws 14, 16 is given.
  • the threaded spindle 40 has at its free end on a threaded portion 42, which communicates with a corresponding internal thread 31 in the interior of the carriage 30 in a meshed connection. Between the threaded portion 42 and the spindle actuator 46, a cylinder portion 44 is provided, which receives in its interior a well-known power boosting pact 50 with a spring assembly. As a result, in a manner known in principle, the tension force applied by a hand crank 48 can be increased.
  • the spindle recess 20 is covered gap-free between the two clamping jaws 14, 16 over the entire adjustment range by a cover member 32.
  • the cover element 32 is plate-shaped or tongue-shaped on the carriage 30. Its top surface is smooth and goes flush in the end faces 24 of the two side walls 22.
  • An underside of the first clamping jaw 14 is formed to match the top of the cover member 32, so that this fitting, so gap-free, under the first jaw 14 is slidable. As a result, a largely smooth-surfaced and thus easy-to-clean surface is created between the two Spannbakken 14, 16. The penetration of chips between the two clamping jaws 14, 16 to the screw 40 towards this is avoided.
  • a partition against the entry of chips to the spindle recess 20 is further improved by the fact that at a rear side of the first clamping jaw 14, a plate-shaped Cover portion 26 is formed. This covers the spindle recess 20 to the rear side of the main body 12 towards the top. Furthermore, in the region of the second clamping jaw 16 on the carriage 30, a cover plate 34 is screwed, which covers the spindle recess 20 upwards in the region between the second clamping jaw 16 and the spindle actuator 46 at least over a large part of the adjustment. For this purpose, the cover plate 34 can slide fitting over a surface of the spindle actuator 46, which closes the front end face of the base body 12. For the cover plate 34 each have a guide groove 35 is introduced in the base body 12 in two side walls 22, which also fulfills a sealing function.
  • side windows 28 are provided which serve for the exit and for the removal of rinsing liquid from the spindle recess 20.
  • a chamfer 21 is provided to the front, which facilitates the outflow of liquid from the spindle recess.
  • webs 29 are arranged, which are tapered inwardly towards the spindle recess 20.
  • an opening 36 is provided in the cover member 32, which allows a supply of lubricating oil to an underlying annular lubricating device 60.
  • this lubricating device 60 is shown in more detail.
  • oil can be supplied to a felt ring 62, which is arranged in a stepped cylindrical housing 66.
  • the felt ring 62 serves to receive, Saving and dispensing of the lubricant to the threaded portion 42 of the screw 40.
  • the outer region of the threaded portion 42 of the screw 40 abuts on the inside of the felt ring 62 at.
  • an annular gap seal 64 adjoins the free side of the lubricating device 60.
  • the gap seal 64 has thread projections, which mesh with the external thread of the threaded portion 42 of the screw 40 without contact. This leaves a fine gap, which allows sufficient passage of lubricating oil when moving the carriage via the screw 40. In this arrangement, with sufficient addition of lubricating oil and a certain flushing effect of the threaded portion 42 can be achieved.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Jigs For Machine Tools (AREA)
  • Gripping On Spindles (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)

Abstract

The clamp device has two chuck jaws (14, 16) by which a first is attached at a base (12) and a second attached at a carriage (30). The jaws are adjustably stored along a top side (18) of the base by a screw jack (40) having a spindle recess (20). The recess is arranged between the jaws and adjustable over an entire moving position of the jaws with a cover element (32) provided. The base lies in a U-shaped cross section with two sides (22), whose top sides are arranged at front surfaces (24) and border concisely on the cover element. The cover element is a one piece plate at the carriage.

Description

Die Erfindung betrifft eine Spanneinrichtung mit zwei Spannbacken, von denen eine erste Spannbacke an einem Grundkörper und eine zweite Spannbacke an einem Schlitten angebracht sind, welcher entlang einer Oberseite des Grundkörpers mittels einer Schraubspindel verstellbar gelagert ist, welche in einer zur Oberseite gerichteten Spindelausnehmung des Grundkörpers angeordnet ist.The invention relates to a clamping device with two clamping jaws, of which a first clamping jaw are attached to a base body and a second clamping jaw on a slide which is adjustably mounted along an upper side of the base body by means of a screw, which arranged in a directed to the top spindle recess of the body is.

Eine derartige Spanneinrichtung ist beispielsweise aus der US-A 5,163,662 oder der EP-A-0 903 201 bekannt. Ein verschiebbarer Schlitten ist innerhalb einer Ausnehmung im Grundkörper entlang von Führungsbahnen verschiebbar gelagert. Die Axialbewegung erfolgt üblicherweise mittels einer Gewindespindel, welche in ein entsprechendes Gewindeelement am Schlitten eingreift und so einen bekannten Axialantrieb bildet.Such a tensioning device is known for example from US-A 5,163,662 or EP-A-0 903 201. A displaceable slide is displaceably mounted within a recess in the main body along guideways. The axial movement is usually carried out by means of a threaded spindle which engages in a corresponding threaded element on the carriage and so forms a known axial drive.

Die sogenannten Maschinenschraubstöcke werden in der Regel an Werkzeugmaschinen zum Spannen der zu bearbeitenden Werkstücke eingesetzt. An Bohr- und Fräsmaschinen erfolgt eine spanabhebende Bearbeitung, wobei kleinteilige Späne unter Zuführung erheblicher Mengen von Spül- und Kühlflüssigkeit vom Werkstück abgeführt werden. Dabei besteht das Problem, dass sich Späne in nicht unerheblicher Menge in der Spindelausnehmung des Grundkörpers ansammeln können. Dabei können Späne auf den axialen Führungsbahnen und den Gewindegängen zu liegen kommen, was zu Beschädigungen der Oberflächen und sogar zu Blockaden und Störungen der beweglichen Teile führen kann. Um dies möglichst zu verhindern, werden die Maschinenschraubstöcke mit einer Vielzahl von Öffnungen versehen, so dass Späne wieder leicht aus der Spindelausnehmung, insbesondere durch Druckluft, entfernt werden können.The so-called machine vices are usually used on machine tools for clamping the workpieces to be machined. On drilling and milling machines is a machining, wherein small-scale chips are removed while supplying significant amounts of rinsing and cooling liquid from the workpiece. There is the problem that chips in not insignificant amount in the spindle recess of the main body can accumulate. In this case, chips can come to rest on the axial guideways and the threads, which can lead to damage to the surfaces and even to blockages and disturbances of the moving parts. To prevent this as possible, the machine vices are provided with a plurality of openings, so that chips can be easily removed from the spindle recess, in particular by compressed air.

Der Erfindung liegt die Aufgabe zugrunde, eine Spanneinrichtung anzugeben, die vor Beeinträchtigungen durch Späne und Spülflüssigkeit besonders gut geschützt ist.The invention has for its object to provide a clamping device, which is particularly well protected against adverse effects of chips and rinsing liquid.

Die Aufgabe wird gemäß der Erfindung durch eine Spanneinrichtung mit den Merkmalen des Anspruchs 1 gelöst. Bevorzugte Ausführungsformen der Erfindung sind in den abhängigen Ansprüchen angegeben.The object is achieved according to the invention by a clamping device with the features of claim 1. Preferred embodiments of the invention are indicated in the dependent claims.

Die erfindungsgemäße Spanneinrichtung ist dadurch gekennzeichnet, dass die Spindelausnehmung des Grundkörpers zwischen den zwei Spannbacken über einen gesamten Verstellbereich der Spannbacken durch ein Deckelement abgedeckt ist. Das Deckelement hat also eine Breite entsprechend der nutförmigen Spindelausnehmung und weist eine Länge auf, die sich über die gesamte Spannweite der Spannbacken, insbesondere deren maximalen Abstand hinaus erstreckt. Auf diese Weise wird dem Umstand entgegen gewirkt, dass sich Späne und Spülflüssigkeit in der Mitte des Grundkörpers zwischen den beiden Spannbacken in erheblicher Menge ansammeln und sich insbesondere dort auf Führungsflächen oder der Spindel ablagern. Dies reduziert nicht nur den Reinigungsaufwand bei Benutzung der Spanneinrichtung, sondern schont insbesondere die Führungsflächen und die Gewindeteile, was sich positiv auf Verschleiß und Lebensdauer der Spanneinrichtung auswirkt.The clamping device according to the invention is characterized in that the spindle recess of the base body is covered by a cover element between the two clamping jaws over an entire adjustment range of the clamping jaws. The cover element thus has a width corresponding to the groove-shaped spindle recess and has a length which extends over the entire span of the clamping jaws, in particular their maximum distance addition. In this way, the fact is counteracted that chips and rinsing liquid accumulate in the middle of the body between the two jaws in a considerable amount and in particular there deposit on guide surfaces or the spindle. This not only reduces the cleaning effort when using the clamping device, but especially protects the guide surfaces and the threaded parts, which has a positive effect on wear and life of the clamping device.

Eine besonders bevorzugte Ausführungsform der Erfindung besteht darin, dass der Grundkörper im Querschnitt U-förmig mit zwei Seitenwänden ausgebildet ist, deren zur Oberseite gerichtete Stirnflächen bündig an das Deckelement angrenzen. Das Deckelement kann dabei vorzugsweise an seiner Oberseite eben ausgebildet sein, so dass eine möglichst glatte Fläche gegeben ist. Eine derartige Fläche lässt sich besonders leicht von darauf zu liegen kommender Späne reinigen.A particularly preferred embodiment of the invention consists in that the base body is U-shaped in cross-section with two side walls, whose end faces directed towards the top are flush with the cover element. The cover element may preferably be flat on its upper side, so that the surface is as smooth as possible. Such an area is particularly easy to clean coming from lying chips.

Nach der Erfindung ist es weiterhin bevorzugt, dass das Deckelement plattenförmig und insbesondere einstückig am Schlitten ausgebildet ist. Es kann sich hierbei um eine axial vorstehende Platte handeln, welche sich bündig, also praktisch spaltfrei, unter die passend ausgebildete Unterseite der festen ersten Spannbacke schieben lässt. Eine einstückige Ausbildung, beispielsweise als ein Gusswerkstück, vermeidet zusätzlich weitere Fugen, was eine gute und leichte Spanentfernung verbessert.According to the invention, it is further preferred that the cover element is plate-shaped and in particular integrally formed on the carriage. This can be an axially projecting plate, which can be flush, ie virtually gap-free, to slide under the suitably designed underside of the fixed first clamping jaw. A one-piece design, for example as a cast workpiece, additionally avoids further joints, which improves a good and easy chip removal.

Eine besonders gute Abschottung gegen Späne wird erfindungsgemäß dadurch erreicht, dass die erste feste Spannbacke an einer Hinterseite des Grundkörpers angeordnet ist, welche einer Vorderseite gegenüberliegt, an der eine Spindelbetätigung, insbesondere eine Handkurbel, vorgesehen ist, und dass die erste Spannbacke einen hinteren plattenförmigen Abdeckabschnitt aufweist, welcher die Spindelausnehmung des Grundkörpers zur Hinterseite hin abdeckt. Diese hintere Abdeckung kann lediglich die Oberseite oder zusätzlich auch eine offene Stirnseite des Grundkörpers abdecken, so dass Späne auch aus diesem Bereich nicht zur Spindel gelangen können. Der Abdeckabschnitt kann einstückig mit der ersten Spannbacke ausgebildet oder als ein separates Teil vorgesehen sein, welches dicht an die erste Spannbacke anschließt.A particularly good insulation against chips is inventively achieved in that the first fixed jaw is arranged at a rear side of the base body, which is opposite to a front on which a spindle actuation, in particular a hand crank, is provided, and that the first clamping jaw a rear plate-shaped cover portion has, which covers the spindle recess of the main body to the rear side. This rear cover can cover only the top or in addition also an open end side of the base body, so that chips can not get out of this area to the spindle. The cover portion may be integrally formed with the first jaw or may be provided as a separate part which closely adjoins the first jaw.

Die Abschottung der Spindelausnehmung wird weiter dadurch verbessert, dass am Schlitten eine Abdeckplatte angeordnet ist, welche die Spindelausnehmung im Bereich der zweiten Spannbacke zur Vorderseite des Grundkörpers hin abdeckt. Hierdurch kann weitgehend verhindert werden, dass auch in den Bereich zwischen dem Schlitten und der Handkurbel von oben Späne in die Spindelausnehmung eindringen.The foreclosure of the spindle recess is further improved by the fact that a cover plate is arranged on the carriage, which covers the spindle recess in the region of the second clamping jaw toward the front of the main body. This can largely be prevented from penetrating into the spindle recess from above, even in the region between the carriage and the hand crank.

Nach der Erfindung ist es weiterhin bevorzugt, das im Deckelement eine Öffnung zum Schmieren der Spindel vorgesehen ist. Die Öffnung kann mit einem Schmiernippel oder einem ähnlichen Einlass- oder Ventilelement versehen sein, welches so vertieft in dem Deckelement angeordnet ist, dass ein Durchtritt von Spänen und eine weiter gute Reinigbarkeit gegeben sind.According to the invention, it is further preferred that an opening for lubricating the spindle is provided in the cover element. The opening may be provided with a grease nipple or a similar inlet or valve element, which is arranged so recessed in the cover element that a passage of chips and further good cleanability are given.

Bei einer weitgehenden Abschirmung der Spindel in der Spindelausnehmung ist es nach der Erfindung vorteilhaft, dass am Schlitten eine ringförmige Schmiereinrichtung angeordnet ist, welche zur Zuführung von Schmiermittel mit der Öffnung im Deckelement in Verbindung steht.In the case of extensive shielding of the spindle in the spindle recess, it is advantageous according to the invention for an annular lubricating device to be arranged on the carriage, which is in communication with the opening in the cover element for supplying lubricant.

Insbesondere ist vorteilhaft, dass die Schmiereinrichtung zum Speichern und Abgeben von Schmiermittel, insbesondere Schmieröl, an einen Gewindebereich der Spindel einen Filzring und eine Spaltdichtung aufweist. Der Filzring dient als ein Reservoir zum Aufnehmen und Speichern von Öl. Grundsätzlich ist im Sinne der Erfindung unter Filz auch jedes andere Material zu verstehen, welches ebenfalls die Funktion des Aufnehmens, Speicherns und langsamen Abgebens von Schmieröl besitzt. Der Filzring kann so stets für eine gewisse Benetzung, insbesondere des Gewindebereiches der Spindel, sorgen. An der vom Schlitten abgewandten Seite des Filzringes ist eine Spaltdichtung angeordnet, welche eine zu starke Abgabe von Öl aus dem Filzring auf den Gewindebereich verhindert. Die Spaltdichtung ist dabei entsprechend einer Gewindemutter mit Gewindegängen ausgebildet, welche mit dem Gewinde auf der Spindel kämmt, ohne diese jedoch unmittelbar zu berühren. Die Kombination dieser Spaltdichtung mit dem nachgeschaltenten Filzring sorgt dafür, dass der schmale Spalt zwischen der Spaltdichtung und dem Gewindebereich der Spindel stets mit einem Ölfilm geschlossen ist. Hierdurch wird das Eindringen selbst feinster Spänepartikel und auch von Spülflüssigkeit in den sensiblen Bereich des Spindelantriebes praktisch vermieden.In particular, it is advantageous that the lubricating device for storing and dispensing lubricant, in particular lubricating oil, to a threaded portion of the spindle has a felt ring and a gap seal. The felt ring serves as a reservoir for receiving and storing oil. Basically, for the purposes of the invention, felt means any other material which also has the function of picking up, storing and slowly dispensing lubricating oil. The felt ring can thus always ensure a certain wetting, in particular the threaded portion of the spindle. At the side facing away from the carriage side of the felt ring, a gap seal is arranged, which is a excessive release of oil from the felt ring to the threaded area prevented. The gap seal is formed according to a threaded nut with threads which meshes with the thread on the spindle, but without touching them directly. The combination of this gap seal with the downstream felt ring ensures that the narrow gap between the gap seal and the threaded area of the spindle is always closed with an oil film. As a result, the penetration of even the finest chip particles and also of rinsing liquid in the sensitive area of the spindle drive is practically avoided.

Nach der Erfindung ist es vorgesehen, dass die Spindel einen Gewindebereich und einen Zylinderbereich aufweist. In dem Zylinderbereich oder Gewindebereich kann ein Kraftverstärkungspaket angeordnet sein. In dem Zylinderbereich bzw. in dem Gewindebereich kann hierzu ein innerer Aufnahmeraum ausgebildet sein. Hierin kann in bekannter Weise ein Kraftverstärkungspaket angeordnet werden, wie es für eine Betätigung von Maschinenschraubstöcken durch eine Handkurbel bekannt ist.According to the invention, it is provided that the spindle has a threaded portion and a cylinder portion. In the cylinder region or threaded region, a power boosting package may be arranged. In the cylinder region or in the threaded region, an inner receiving space can be formed for this purpose. Herein can be arranged in a known manner, a power boost package, as is known for an operation of machine vices by a hand crank.

Die erfindungsgemäßen Abdeckungen verhindern weitestgehend, dass grobe Spanpartikel in die Spindelausnehmung und damit auf die Führungsflächen und die Gewindebereiche gelangen können. Hierzu liegen die einzelnen zueinander beweglichen Teile passend aneinander an. Die Verwendung von Dichtelementen aus Gummi wäre allenfalls in Einzelfällen zweckmäßig, da derartige Dichtelemente durch die scharfkantigen Metallspäne sehr schnell beschädigt und verschlissen würden. Ohne derartige Dichtelemente ist es nicht auszuschließen, dass Spülflüssigkeit in den Bereich der Spindelausnehmung eindringen kann. Es ist daher nach der Erfindung zweckmäßig, dass in Seitenbereichen des Grundkörpers Seitenöffnungen eingebracht sind. Diese Seitenöffnungen dienen zum Austritt von Spülflüssigkeit bzw. zu deren Entfernung etwa mittels Druckluft.The covers according to the invention largely prevent coarse chip particles from getting into the spindle recess and thus onto the guide surfaces and the threaded areas. For this purpose, the individual mutually movable parts fit together. The use of sealing elements made of rubber would at best be appropriate in individual cases, since such sealing elements would be damaged and worn very quickly by the sharp-edged metal chips. Without such sealing elements, it can not be ruled out that rinsing liquid can penetrate into the area of the spindle recess. It is therefore expedient according to the invention that side openings are made in side areas of the main body. These side openings serve for the discharge of rinsing liquid or for their removal, for example by means of compressed air.

Die Erfindung wird weiter anhand eines bevorzugten Ausführungsbeispieles beschrieben, welches schematisiert in den Zeichnungen dargestellt ist. In den Zeichnungen zeigen:

Fig. 1
eine perspektivische Ansicht einer erfindungsgemäßen Spanneinrichtung;
Fig. 2
eine Querschnittsansicht der Spanneinrichtung von Fig. 1; und
Fig. 3
eine perspektivische Darstellung einer Schmiereinrichtung.
The invention will be further described with reference to a preferred embodiment, which is shown schematically in the drawings. In the drawings show:
Fig. 1
a perspective view of a clamping device according to the invention;
Fig. 2
a cross-sectional view of the clamping device of Fig. 1; and
Fig. 3
a perspective view of a lubrication device.

Der Aufbau einer erfindungsgemäßen Spanneinrichtung 10 wird in Zusammenhang mit den Figuren 1 und 2 erläutert. An einem im Querschnitt U-förmigen Grundkörper 12 mit zwei Seitenwänden 22 ist an einem Ende eine erste Spannbacke 14 mittels Schrauben lösbar befestigt. Der Grundkörper 12 weist entlang seiner Länge eine zu seiner Oberseite 18 hin offene Spindelausnehmung 20 auf. Innerhalb der Spindelausnehmung 20 ist ein Schlitten 30 axial verschiebbar gelagert, welcher an seiner Oberseite eine zweite Spannbacke 16 aufweist. Entlang der gesamten Länge der Spindelausnehmung 20 erstreckt sich eine Schraubspindel 40, welche den Schlitten 30 durchdringt. Mittels einer Spindelbetätigung 46, welche insbesondere eine Handkurbel 48 aufweisen kann, kann die Spindel 40 gedreht werden, um den Schlitten 30 und damit die zweite Spannbacke 16 gegenüber der ersten Spannbacke 14 axial zu verstellen. In den Figuren 1 und 2 ist die als Schraubstock ausgebildete Spanneinrichtung 10 in einer Stellung gezeigt, bei welcher die maximale Verstellweite zwischen den beiden Spannbacken 14, 16 gegeben ist.The construction of a tensioning device 10 according to the invention will be explained in connection with FIGS. 1 and 2. On a cross-sectionally U-shaped main body 12 with two side walls 22, a first clamping jaw 14 is releasably secured by screws at one end. The base body 12 has along its length a spindle recess 20 which is open toward its upper side 18. Within the spindle recess 20, a carriage 30 is mounted axially displaceable, which has a second clamping jaw 16 on its upper side. Along the entire length of the spindle recess 20 extends a screw 40, which penetrates the carriage 30. By means of a spindle actuator 46, which may in particular have a hand crank 48, the spindle 40 can be rotated to axially adjust the carriage 30 and thus the second clamping jaw 16 relative to the first clamping jaw 14. In Figures 1 and 2, designed as a vice clamping device 10 is in one Position shown, in which the maximum adjustment between the two jaws 14, 16 is given.

Die Schraubspindel 40 weist an ihrem freien Ende einen Gewindebereich 42 auf, welcher mit einem entsprechenden Innengewinde 31 im Inneren des Schlittens 30 in kämmender Verbindung steht. Zwischen dem Gewindebereich 42 und der Spindelbetätigung 46 ist ein Zylinderbereich 44 vorgesehen, welcher in seinem Inneren ein hinlänglich bekanntes Kraftverstärkungspakt 50 mit einer Federpaketanordnung aufnimmt. Hierdurch kann in grundsätzlich bekannter Weise die durch eine Handkurbel 48 aufgebrachte Spannkraft verstärkt werden.The threaded spindle 40 has at its free end on a threaded portion 42, which communicates with a corresponding internal thread 31 in the interior of the carriage 30 in a meshed connection. Between the threaded portion 42 and the spindle actuator 46, a cylinder portion 44 is provided, which receives in its interior a well-known power boosting pact 50 with a spring assembly. As a result, in a manner known in principle, the tension force applied by a hand crank 48 can be increased.

Um ein Ablagern von Spänen auf dem Gewindebereich 42 zu vermeiden, ist die Spindelausnehmung 20 zwischen den beiden Spannbacken 14, 16 über deren gesamten Verstellbereich durch ein Deckelement 32 lückenlos abgedeckt. Das Deckelement 32 ist platten- oder zungenförmig am Schlitten 30 ausgebildet. Seine Oberseite ist glattflächig und geht bündig in die Stirnflächen 24 der beiden Seitenwände 22 über. Eine Unterseite der ersten Spannbacke 14 ist passend zur Oberseite des Deckelementes 32 ausgebildet, so dass dieses passend, also lückenfrei, unter die erste Spannbacke 14 schiebbar ist. Hierdurch wird zwischen den beiden Spannbakken 14, 16 eine weitestgehend glattflächige und damit gut zu reinigende Fläche geschaffen. Das Eindringen von Spänen zwischen den beiden Spannbacken 14, 16 zur Schraubspindel 40 hin wird hierdurch vermieden.In order to avoid deposits of chips on the threaded portion 42, the spindle recess 20 is covered gap-free between the two clamping jaws 14, 16 over the entire adjustment range by a cover member 32. The cover element 32 is plate-shaped or tongue-shaped on the carriage 30. Its top surface is smooth and goes flush in the end faces 24 of the two side walls 22. An underside of the first clamping jaw 14 is formed to match the top of the cover member 32, so that this fitting, so gap-free, under the first jaw 14 is slidable. As a result, a largely smooth-surfaced and thus easy-to-clean surface is created between the two Spannbakken 14, 16. The penetration of chips between the two clamping jaws 14, 16 to the screw 40 towards this is avoided.

Eine Abschottung gegen den Zutritt von Spänen zur Spindelausnehmung 20 wird noch dadurch verbessert, dass an einer Hinterseite der ersten Spannbacke 14 ein plattenförmiger Abdeckabschnitt 26 ausgebildet ist. Dieser deckt die Spindelausnehmung 20 zur Hinterseite des Grundkörpers 12 hin nach oben ab. Weiterhin ist im Bereich der zweiten Spannbacke 16 am Schlitten 30 eine Abdeckplatte 34 angeschraubt, welche die Spindelausnehmung 20 nach oben in dem Bereich zwischen der zweiten Spannbacke 16 und der Spindelbetätigung 46 zumindest über einen großen Teil des Verstellbereiches abdeckt. Hierzu kann sich die Abdeckplatte 34 passend über eine Oberfläche der Spindelbetätigung 46 schieben, welche die vordere Stirnseite des Grundkörpers 12 abschließt. Für die Abdeckplatte 34 sind in dem Grundkörper 12 in beiden Seitenwänden 22 je eine Führungsnut 35 eingebracht, die auch eine Abdichtfunktion erfüllt.A partition against the entry of chips to the spindle recess 20 is further improved by the fact that at a rear side of the first clamping jaw 14, a plate-shaped Cover portion 26 is formed. This covers the spindle recess 20 to the rear side of the main body 12 towards the top. Furthermore, in the region of the second clamping jaw 16 on the carriage 30, a cover plate 34 is screwed, which covers the spindle recess 20 upwards in the region between the second clamping jaw 16 and the spindle actuator 46 at least over a large part of the adjustment. For this purpose, the cover plate 34 can slide fitting over a surface of the spindle actuator 46, which closes the front end face of the base body 12. For the cover plate 34 each have a guide groove 35 is introduced in the base body 12 in two side walls 22, which also fulfills a sealing function.

In den Seitenwänden 22 sind Seitenfenster 28 vorgesehen, welche zum Austritt und zum Entfernen eingetretener Spülflüssigkeit aus der Spindelausnehmung 20 dienen. In bevorzugter Weise ist auch zur Vorderseite hin eine Abschrägung 21 vorgesehen, welche den Abfluss eingedrungener Flüssigkeit aus der Spindelausnehmung erleichtert. Zwischen den Seitenfenstern 28 sind Stege 29 angeordnet, welche nach innen zur Spindelausnehmung 20 hin verjüngend ausgebildet sind.In the side walls 22 side windows 28 are provided which serve for the exit and for the removal of rinsing liquid from the spindle recess 20. In a preferred manner, a chamfer 21 is provided to the front, which facilitates the outflow of liquid from the spindle recess. Between the side windows 28 webs 29 are arranged, which are tapered inwardly towards the spindle recess 20.

Um trotz der guten Abschottung der Schraubspindel 40 eine einfache Wartung und gute Schmierung sicherzustellen, ist in dem Deckelement 32 eine Öffnung 36 vorgesehen, welche eine Zuführung von Schmieröl zu einer darunter angeordneten ringförmigen Schmiereinrichtung 60 ermöglicht. In Fig. 3 ist diese Schmiereinrichtung 60 näher dargestellt.In order to ensure easy maintenance and good lubrication despite the good sealing of the screw 40, an opening 36 is provided in the cover member 32, which allows a supply of lubricating oil to an underlying annular lubricating device 60. In Fig. 3, this lubricating device 60 is shown in more detail.

Über einen Einlassstutzen 61 kann Öl zu einem Filzring 62 zugeführt werden, welcher in einem gestuften zylindrischen Gehäuse 66 angeordnet ist. Der Filzring 62 dient zum Aufnehmen, Speichern und Abgeben des Schmiermittels an den Gewindebereich 42 der Schraubspindel 40. Der Außenbereich des Gewindebereichs 42 der Schraubspindel 40 liegt an der Innenseite des Filzrings 62 an. Um einen zu großen und zu schnellen Abfluss von Öl aus dem Filzring zur freien Seite des Gewindebereiches 42 zu vermeiden, schließt sich zur freien Seite der Schmiereinrichtung 60 eine ringförmige Spaltdichtung 64 an. Die Spaltdichtung 64 weist Gewindevorsprünge auf, welche mit dem Außengewinde des Gewindebereiches 42 der Schraubspindel 40 berührungslos kämmen. Hierbei verbleibt ein feiner Spalt, welcher einen ausreichenden Durchtritt von Schmieröl beim Bewegen des Schlittens über die Schraubspindel 40 ermöglicht. Bei dieser Anordnung kann bei ausreichender Zugabe von Schmieröl auch ein gewisser Freispüleffekt des Gewindebereiches 42 erzielt werden.Via an inlet stub 61, oil can be supplied to a felt ring 62, which is arranged in a stepped cylindrical housing 66. The felt ring 62 serves to receive, Saving and dispensing of the lubricant to the threaded portion 42 of the screw 40. The outer region of the threaded portion 42 of the screw 40 abuts on the inside of the felt ring 62 at. In order to avoid excessive and rapid outflow of oil from the felt ring to the free side of the threaded area 42, an annular gap seal 64 adjoins the free side of the lubricating device 60. The gap seal 64 has thread projections, which mesh with the external thread of the threaded portion 42 of the screw 40 without contact. This leaves a fine gap, which allows sufficient passage of lubricating oil when moving the carriage via the screw 40. In this arrangement, with sufficient addition of lubricating oil and a certain flushing effect of the threaded portion 42 can be achieved.

Claims (10)

Spanneinrichtung mit zwei Spannbacken (14, 16), von denen eine erste Spannbacke (14) an einem Grundkörper (12) und eine zweite Spannbacke (16) an einem Schlitten (30) angebracht sind, welcher entlang einer Oberseite (18) des Grundkörpers (12) mittels einer Schraubspindel (40) verstellbar gelagert ist, welche in einer zur Oberseite (18) gerichteten Spindelausnehmung (20) des Grundkörpers (12) angeordnet ist,
dadurch gekennzeichnet,
dass die Spindelausnehmung (20) des Grundkörpers (12) zwischen den zwei Spannbacken (14, 16) über einen gesamten Verstellbereich der Spannbacken (14, 16) durch ein Deckelement (32) abgedeckt ist.
Clamping device with two clamping jaws (14, 16), of which a first clamping jaw (14) on a base body (12) and a second clamping jaw (16) on a carriage (30) are mounted, which along an upper side (18) of the base body ( 12) is adjustably mounted by means of a screw spindle (40), which is arranged in a to the top (18) directed spindle recess (20) of the base body (12),
characterized,
that the spindle recess (20) of the base body (12) between the two clamping jaws (14, 16) (14, 16) is covered by a cover element (32) through an entire range of adjustment of the clamping jaws.
Spanneinrichtung nach Anspruch 1,
dadurch gekennzeichnet,
dass der Grundkörper (12) im Querschnitt U-förmig mit zwei Seitenwänden (22) ausgebildet ist, deren zur Oberseite (18) gerichtete Stirnflächen (24) bündig an das Deckelement (32) angrenzen.
Clamping device according to claim 1,
characterized,
in that the base body (12) is U-shaped in cross-section with two side walls (22) whose end faces (24) directed towards the top side (18) are flush with the cover element (32).
Spanneinrichtung nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
dass das Deckelement (32) plattenförmig und insbesondere einstückig am Schlitten (30) ausgebildet ist.
Clamping device according to claim 1 or 2,
characterized,
that the cover element is formed on the carriage (30) plate-shaped and in particular in one piece (32).
Spanneinrichtung nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet,
dass die erste Spannbacke (14) an einer Hinterseite des Grundkörpers (12) angeordnet ist, welche einer Vorderseite gegenüberliegt, an der eine Spindelbetätigung (46), insbesondere eine Handkurbel (48), vorgesehen ist, und
dass die erste Spannbacke (14) einen hinteren plattenförmigen Abdeckabschnitt (26) aufweist, welcher die Spindelausnehmung (20) des Grundkörpers (12) zur Hinterseite hin abdeckt.
Clamping device according to one of claims 1 to 3,
characterized,
in that the first clamping jaw (14) is arranged on a rear side of the main body (12) which is opposite a front side on which a spindle actuation (46), in particular a hand crank (48), is provided, and
that the first clamping jaw (14) has a rear plate-shaped cover portion (26), wherein the spindle recess (20) covers the base body (12) to the rear side.
Spanneinrichtung nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet,
dass am Schlitten (30) eine Abdeckplatte (34) angeordnet ist, welche die Spindelausnehmung (20) im Bereich der zweiten Spannbacke (16) zur Vorderseite des Grundkörpers (12) hin abdeckt.
Clamping device according to one of claims 1 to 4,
characterized,
that there is disposed a cover plate (34) on the carriage (30) which covers the spindle recess (20) in the region of the second clamping jaw (16) toward the front of the base body (12).
Spanneinrichtung nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet,
dass im Deckelement (32) eine Öffnung (36) zum Schmieren der Schraubspindel (40) vorgesehen ist.
Clamping device according to one of claims 1 to 5,
characterized,
in that an opening (36) for lubricating the screw spindle (40) is provided in the cover element (32).
Spanneinrichtung nach Anspruch 6,
dadurch gekennzeichnet,
dass am Schlitten (30) eine ringförmige Schmiereinrichtung (60) angeordnet ist, welche zur Zuführung von Schmiermittel mit der Öffnung (36) im Deckelement (32) in Verbindung steht.
Clamping device according to claim 6,
characterized,
in that an annular lubricating device (60) is arranged on the carriage (30) which communicates with the opening (36) in the cover element (32) in order to supply lubricant.
Spanneinrichtung nach Anspruch 7,
dadurch gekennzeichnet,
dass die Schmiereinrichtung (60) zum Speichern und Abgeben von Schmiermittel, insbesondere Schmieröl, an einen Gewindebereich (42) der Schraubspindel (40) einen Filzring (62) und eine Spaltdichtung (64) aufweist.
Clamping device according to claim 7,
characterized,
that the lubricating means (60), the screw (40) for storing and supplying lubricant, in particular lubricating oil to a threaded portion (42) includes a felt ring (62) and a gap seal (64).
Spanneinrichtung nach einem der Ansprüche 1 bis 8,
dadurch gekennzeichnet,
dass die Schraubspindel (40) einen Gewindebereich (42) und einen Zylinderbereich (44) aufweist.
Clamping device according to one of claims 1 to 8,
characterized,
in that the screw spindle (40) has a threaded area (42) and a cylinder area (44).
Spanneinrichtung nach einem der Ansprüche 1 bis 9,
dadurch gekennzeichnet,
dass in den Seitenwänden (22) des Grundkörpers (12) Seitenfenster (28) eingebracht sind.
Clamping device according to one of claims 1 to 9,
characterized,
that in the side walls (22) of the base body (12) side windows (28) are introduced.
EP05012918A 2005-06-15 2005-06-15 Clamping device with cover element for its spindle recess Expired - Lifetime EP1688219B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT05012918T ATE345194T1 (en) 2005-06-15 2005-06-15 CLAMPING DEVICE WITH A COVER ELEMENT FOR YOUR SPINDLE RECESS
EP05012918A EP1688219B1 (en) 2005-06-15 2005-06-15 Clamping device with cover element for its spindle recess
ES05012918T ES2276372T3 (en) 2005-06-15 2005-06-15 CLAMPING DEVICE WITH A COVER ELEMENT FOR EMPTYING THE SPINDLE.
DE502005000189T DE502005000189D1 (en) 2005-06-15 2005-06-15 Clamping device with a cover element for its spindle recess
PCT/EP2006/002975 WO2006133755A1 (en) 2005-06-15 2006-03-31 Clamping device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05012918A EP1688219B1 (en) 2005-06-15 2005-06-15 Clamping device with cover element for its spindle recess

Publications (2)

Publication Number Publication Date
EP1688219A1 true EP1688219A1 (en) 2006-08-09
EP1688219B1 EP1688219B1 (en) 2006-11-15

Family

ID=35197790

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05012918A Expired - Lifetime EP1688219B1 (en) 2005-06-15 2005-06-15 Clamping device with cover element for its spindle recess

Country Status (5)

Country Link
EP (1) EP1688219B1 (en)
AT (1) ATE345194T1 (en)
DE (1) DE502005000189D1 (en)
ES (1) ES2276372T3 (en)
WO (1) WO2006133755A1 (en)

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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
DE102012208720A1 (en) * 2012-05-24 2013-11-28 Schunk Gmbh & Co. Kg Spann- Und Greiftechnik Clamping and gripping device has base jaw with covering sections that are formed in longitudinal direction and are stretched up to other base jaw to completely cover intermediate area between base jaws at full open device
DE102013107243A1 (en) * 2013-07-09 2015-01-15 De-Sta-Co Europe Gmbh Bauteilpositioniervorrichtung
DE102014110352B3 (en) * 2014-07-23 2015-10-08 Gressel Ag Centric jig
FR3101063A1 (en) * 2019-09-23 2021-03-26 Safran Aircraft Engines Nacelle half-cowl closing tools
US11964364B1 (en) 2021-02-01 2024-04-23 Dean H. Bentley Vise jaw insert spring-loaded waste shield and cleaning aid

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH699112A2 (en) 2008-07-11 2010-01-15 Dieter Mosig Chuck with means for flushing.

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE102012208720A1 (en) * 2012-05-24 2013-11-28 Schunk Gmbh & Co. Kg Spann- Und Greiftechnik Clamping and gripping device has base jaw with covering sections that are formed in longitudinal direction and are stretched up to other base jaw to completely cover intermediate area between base jaws at full open device
DE102012208720B4 (en) * 2012-05-24 2017-07-20 Schunk Gmbh & Co. Kg Spann- Und Greiftechnik Clamping or gripping device with mutually leading cover sections on base jaws
DE102013107243A1 (en) * 2013-07-09 2015-01-15 De-Sta-Co Europe Gmbh Bauteilpositioniervorrichtung
DE102014110352B3 (en) * 2014-07-23 2015-10-08 Gressel Ag Centric jig
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US9962812B2 (en) 2014-07-23 2018-05-08 Gressel Ag Centric clamping device
FR3101063A1 (en) * 2019-09-23 2021-03-26 Safran Aircraft Engines Nacelle half-cowl closing tools
US11964364B1 (en) 2021-02-01 2024-04-23 Dean H. Bentley Vise jaw insert spring-loaded waste shield and cleaning aid

Also Published As

Publication number Publication date
ATE345194T1 (en) 2006-12-15
WO2006133755A1 (en) 2006-12-21
ES2276372T3 (en) 2007-06-16
EP1688219B1 (en) 2006-11-15
DE502005000189D1 (en) 2006-12-28

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