EP0050194B1 - Clamp - Google Patents

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Publication number
EP0050194B1
EP0050194B1 EP81106026A EP81106026A EP0050194B1 EP 0050194 B1 EP0050194 B1 EP 0050194B1 EP 81106026 A EP81106026 A EP 81106026A EP 81106026 A EP81106026 A EP 81106026A EP 0050194 B1 EP0050194 B1 EP 0050194B1
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EP
European Patent Office
Prior art keywords
spindle
jaw
grooves
spring
pin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP81106026A
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German (de)
French (fr)
Other versions
EP0050194A1 (en
Inventor
Urs Ryser
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.)
FRIBOSA AG
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FRIBOSA AG
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Publication date
Application filed by FRIBOSA AG filed Critical FRIBOSA AG
Publication of EP0050194A1 publication Critical patent/EP0050194A1/en
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Publication of EP0050194B1 publication Critical patent/EP0050194B1/en
Expired legal-status Critical Current

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    • 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
    • B25B1/12Arrangements for positively actuating jaws using screws with provision for disengagement
    • 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

Definitions

  • the spindle is equipped with the cross pin, and the spindle nut is supported on the movable jaw in the clamping direction.
  • the spindle advanced after loosening the spindle nut must be pulled back and the spindle nut tightened with the spindle held in the retracted position.
  • the spindle nut must be loosened and the spindle pushed forward.
  • the object is achieved to create a vise that can be produced while maintaining the advantageous properties of the vices of the type mentioned without any significant additional effort, but is easier and faster to operate.
  • it is sufficient to tighten a workpiece to tighten the spindle (or the spindle nut) and to loosen the workpiece to loosen the spindle (or spindle nut) without the spindle also having to be moved and held in the displaced position.
  • the pair of elements cannot exert any force pushing back the movable jaw when the spindle is released, because the groove flank facing the fixed jaw runs approximately in the direction of the spindle and the spindle nut or the spindle head on the movable jaw is only supported for tightening, but can stand out from her or his support surface (in the vice of DE-PS 26 52 946, the spindle head is lifted off its support surface by the spring when the spindle is released).
  • the embodiment according to claim 6 corresponds to the first of these two alternative possibilities.
  • 1 denotes the bed (base body), 2 the fixed jaw, 3 the movable jaw, namely, that can be moved along the bed 1 in a parallel guide (not shown), 4 a between the jaws 2 and 3 clamped workpiece, 5 the inclined spindle with the spindle head 6, and 7 the spindle nut.
  • the pair of elements consisting of the spindle 5 and the spindle nut 7 is arranged at the top in a cavity 8 of the displaceable jaw 3 and at the bottom in a longitudinal slot 9 of the bed 1 in the longitudinal direction of which it is pivotable and axially immovable.
  • a spherical surface of the spindle head 6 is supported on a curved surface 10 and a ring 13, which is held opposite the head 6 on the spindle 5 by a snap ring 12, is supported on a surface 14 coaxial with the surface 10, and the spindle is between the head 6 and the ring 13 arranged in an elongated hole 15.
  • the spindle nut 7, like a part 16 of the displaceable jaw 3, is displaceably guided in the longitudinal slot 9 of the bed.
  • the lower end of the spindle nut 7 is provided with a cylindrical cross pin 17 which projects beyond the spindle nut 7 on both sides.
  • the spindle nut 7 is loaded by a leaf spring 18, which strives to pivot the spindle 5 together with the spindle nut 7 to the fixed jaw 2.
  • the bed 1 has on both sides of the longitudinal slot 9 a number of cross-sectionally rectangular, open transverse grooves, z. B. 20, 21, 22, which are opposed in pairs to receive the cross pin 17.
  • the depth of the grooves 20, 21, 22 is greater than the radius of the cross section of the pin.
  • the cross section of the groove can also be rounded at the top, that is to say it can be U-shaped in reverse.
  • the spindle nut 7 When the spindle 5 is in any position of the displaceable jaw 3, in which the pin 17 is either wholly or partly in one of the grooves or is pressed between two grooves by the spring 18 against the surface 23 in which the grooves are formed is solved, the spindle nut 7 is subjected to the feed caused by the spindle 5 and the spring force of the spring 18. The spindle nut 7 goes down and swivels (around the spindle head 6) to the right in the drawing. A shoulder formed by a nose 24 on the spindle nut 7 abuts a corner 25 formed in the cavity 8 of the displaceable jaw 3 when the pin 17 is at a small distance from the surface 23. In this state, which is shown in Fig. 3, the pin 17 can not engage in one of the grooves, the jaw 3 is freely displaceable.
  • the pin 17 When the jaw 3 is advanced until it abuts the workpiece 4, the pin 17 is generally not in front of one of the grooves, but z. As in Fig. 3, in front of the surface 23 between the grooves 21 and 22.
  • the pin 17 When tightening the spindle 5, the pin 17 first touches the surface 23, it is pressed by the spring 18 against this surface and slides on it until it when the spindle 5 is further tightened by the spring 18 into the groove 21 and when the spindle 5 is further tightened it is pressed against the left flank of this groove 21 in the drawing, as shown in FIG. 4.
  • the displaceable jaw 3 is pressed against the workpiece 4, which is supported opposite this jaw 3 on the fixed jaw 2 (FIG. 1).
  • the pin 17 When the spindle 5 is released, the pin 17 first detaches from the left flank of the groove 21 because the distance between the pin 17 and the spindle head 6 increases and the spring 18 acts. Under this effect, the pin 17 then abuts the right flank of the groove 21, and when the spindle 5 is loosened further, the pin 17 slides downwards on this groove flank, the horizontal component of its obliquely downward movement causing the displaceable jaw 3 is pushed back, as shown in Figures 5 and 6. In addition to the vertical course of the groove flank, a prerequisite for this is that the spring 18 holds the pin 17 on the right flank of the groove 21.
  • the pin 17 leaves the groove 21 and slides to the right on the surface 23 until the shoulder of the spindle nut 7 formed by the nose 24 abuts the corner 25.
  • the movable parts of the displaceable jaw 3 thus again reach the position shown in FIG. 3, the jaw 3 is freely displaceable.
  • the ratio of the spindle rotation to the horizontal component of the path of the pin 17 is determined by the pitch of the spindle thread and the inclination of the spindle 5 and is relatively very large. It can therefore be exerted without considerable effort to release the jaw 3 and this jaw 3 can be easily released even if it has stuck in its (not shown) parallel guide with high clamping force.

Description

Bei einem bekannten Schraubstock der im Oberbegriff des Anspruchs 1 angegebenen Art (FR-PS 341 243) ist die Spindel mit dem Querstift ausgerüstet, und die Spindelmutter ist an der bewegbaren Backe in Spannrichtung unterstützt. Zum Festspannen eines Werkstückes muss die nach Lösen der Spindelmutter vorgeschobene Spindel zurückgezogen und die Spindelmutter bei in der zurückgezogenen Lage gehaltener Spindel angezogen werden. Zum Lösen des Werkstückes muss die Spindelmutter gelöst und die Spindel vorgestossen werden.In a known vice of the type specified in the preamble of claim 1 (FR-PS 341 243), the spindle is equipped with the cross pin, and the spindle nut is supported on the movable jaw in the clamping direction. To clamp a workpiece, the spindle advanced after loosening the spindle nut must be pulled back and the spindle nut tightened with the spindle held in the retracted position. To loosen the workpiece, the spindle nut must be loosened and the spindle pushed forward.

Bei einem anderen bekannten Schraubstock (DE-PS 2652946), der nicht der genannten Art angehört, weil zwei feststehende Backen vorgesehen sind, und das Elementenpaar demgemäss nicht in Schwenkrichtung auf eine feststehende Backe federbelastet ist, ist die Spindelmutter mit dem Querstift ausgerüstet. Zwischen dem Spindelkopf und der bewegbaren Backe wirkt eine die Spindel in Richtung ihrer Achse anhebende Feder. Zum Festspannen eines Werkstücks muss die gelöste Spindel entgegen der Federkraft niedergedrückt, in die anzuwendende Schräglage geschwenkt, losgelassen und danach angezogen werden. Zum Lösen des Werkstücks muss die Spindel gelöst und niedergedrückt werden.In another known vice (DE-PS 2652946), which does not belong to the type mentioned, because two fixed jaws are provided, and the pair of elements is accordingly not spring-loaded in the pivoting direction on a fixed jaw, the spindle nut is equipped with the cross pin. Between the spindle head and the movable jaw acts a spring lifting the spindle in the direction of its axis. To clamp a workpiece, the released spindle must be pressed against the spring force, swiveled into the inclined position to be used, released and then tightened. To release the workpiece, the spindle must be released and pressed down.

Durch die im Anspruch 1 angegebene Erfindung wird die Aufgabe gelöst, einen Schraubstock zu schaffen, der unter Beibehaltung der vorteilhaften Eigenschaften der Schraubstöcke der genannten Art ohne nennenswerten Mehraufwand herstellbar, aber leichter und schneller bedienbar ist. Beim erfindungsgemässen Schraubstock genügt es zum Festspannen eines Werkstückes, die Spindel (bzw. die Spindelmutter) anzuziehen, und zum Lösen des Werkstückes die Spindel (bzw. Spindelmutter) zu lösen, ohne dass die Spindel ausserdem verschoben und in der verschobenen Lage gehalten werden müsste.By the invention specified in claim 1, the object is achieved to create a vise that can be produced while maintaining the advantageous properties of the vices of the type mentioned without any significant additional effort, but is easier and faster to operate. In the vice according to the invention, it is sufficient to tighten a workpiece to tighten the spindle (or the spindle nut) and to loosen the workpiece to loosen the spindle (or spindle nut) without the spindle also having to be moved and held in the displaced position.

Bei den bekannten Schraubstöcken (FR-PS 341 243, DE-PS 26 52 946) wurde durch das Lösen der Spindel lediglich die Verankerung des Querstiftes in der Nutreihe gelöst, danach konnte die bewegbare Backe aber noch nicht ohne weiteres von Hand zurückgeschoben werden, wenn sie sich infolge einer hohen Spannkraft im Bett festgesetzt (infolge des auftretenden Drehmoments in der Führung verkantet) hatte. Das Elementenpaar kann bei diesen bekannten Schraubstöcken beim Lösen der Spindel keine die bewegbare Backe zurückschiebende Kraft ausüben, weil die der festen Backe zugewandte Nutflanke ungefähr in der Richtung der Spindel verläuft und die Spindelmutter bzw. der Spindelkopf an der bewegbaren Backe nur zum Anziehen unterstützt ist, sich aber von ihrer bzw. seiner Unterstützungsfläche abheben kann (beim Schraubstock der DE-PS 26 52 946 wird beim Lösen der Spindel der Spindelkopf durch die Feder von seiner Unterstützungsfläche abgehoben).In the known vices (FR-PS 341 243, DE-PS 26 52 946), only the anchoring of the cross pin in the groove row was released by loosening the spindle, but then the movable jaw could not be easily pushed back by hand if it got stuck in bed due to a high tension (jammed due to the torque occurring in the guide). With these known vices, the pair of elements cannot exert any force pushing back the movable jaw when the spindle is released, because the groove flank facing the fixed jaw runs approximately in the direction of the spindle and the spindle nut or the spindle head on the movable jaw is only supported for tightening, but can stand out from her or his support surface (in the vice of DE-PS 26 52 946, the spindle head is lifted off its support surface by the spring when the spindle is released).

Bei der im Anspruch 2 angegebenen Weiterbildung der Erfindung wird beim Lösen der Spindel die bewegbare Backe durch das dabei als Schraubengetriebe wirkende Elementenpaar und die mit dessen Querstift als « schiefe Ebene zusammenwirkende Nutflanke zurückgestossen (wobei ein Drehmoment ausgeübt wird, das entgegengesetzt zu dem beim Festspannen des Werkstücks ausgeübten Drehmoment ist). Dadurch wird die bewegbare Backe gelockert, gelöst und etwas zurückgestossen. Sie ist danach ohne weiteres von Hand verschiebbar, auch wenn sie sich in erheblichem Masse festgesetzt hatte.In the development of the invention specified in claim 2, when the spindle is loosened, the movable jaw is pushed back by the pair of elements acting as a screw gear and the groove flank interacting with its transverse pin as an `` inclined plane '' (whereby a torque is exerted which is opposite to that when clamping the Workpiece torque is exerted). As a result, the movable jaw is loosened, released and pushed back a little. It can then be easily moved by hand, even if it has settled to a considerable extent.

Diese Weiterbildung wird zweckmässig nach den Ansprüchen 3 und 4 mit Nuten ausgeführt, deren Tiefe grösser als der Radius des zylindrischen Querstiftes und deren Querschnitt rechteckig oder umgekehrt U-förmig ist.This development is advantageously carried out according to claims 3 and 4 with grooves, the depth of which is greater than the radius of the cylindrical cross pin and the cross section of which is rectangular or vice versa U-shaped.

Bei dem bekannten Schraubstock vorliegender Art (FR-PS 341 243) ist es dem Benutzer nicht erkennbar, ob die Spindelmutter so weit gelöst ist, dass die bewegbare Backe frei verschiebbar ist. Ist die Mutter ungenügend gelöst, und die Spindel bis zum Anschlagen der Mutter an deren Unterstützungsfläche vorgestossen, so löst sich der Querstift zwar aus der Nut, er greift aber beim Verschieben der bewegbaren Backe infolge der Federbelastung in die nächste Nut ein.In the known vice of the present type (FR-PS 341 243), it is not recognizable to the user whether the spindle nut has been loosened to such an extent that the movable jaw can be moved freely. If the nut is insufficiently loosened and the spindle is pushed against the support surface until the nut strikes, the cross pin loosens from the groove, but it engages in the next groove when the movable jaw is moved due to the spring load.

Bei der im Anspruch 5 angegebenen Weiterbildung der Erfindung braucht die Spindel nur bis zum Anschlag gelöst zu werden, woraufhin der Querstift trotz der Federbelastung nicht bzw. erst, wenn die Spindel wieder angezogen wird, in eine Nut eingreifen kann.In the development of the invention specified in claim 5, the spindle only needs to be loosened as far as it will go, whereupon the cross pin cannot engage in a groove despite the spring load or only when the spindle is tightened again.

Im vorliegenden Zusammenhang ist es belanglos, ob zum Lösen der Spindel die Spindel selbst oder die Spindelmutter gedreht wird, d. h., ob die Spindelmutter mit dem Querstift versehen und der Spindelkopf in der bewegbaren Backe gehalten oder in kinematischer Vertauschung die Spindel mit dem Querstift ausgerüstet und die Spindelmutter in der bewegbaren Backe gehalten ist.In the present context, it is irrelevant whether the spindle itself or the spindle nut is rotated to loosen the spindle, i. that is, whether the spindle nut is provided with the cross pin and the spindle head is held in the movable jaw or, in kinematic reversal, the spindle is equipped with the cross pin and the spindle nut is held in the movable jaw.

Die Ausführungsform nach dem Anspruch 6 entspricht der ersten dieser beiden alternativen Möglichkeiten.The embodiment according to claim 6 corresponds to the first of these two alternative possibilities.

Im folgenden wird die Erfindung anhand von lediglich einen Ausführungsweg darstellenden Zeichnungen näher erläutert. Es zeigen :

  • Figur 1 eine Seitenansicht eines Schraubstocks mit eingespanntem Werkstück,
  • Figur 2 eine Untersicht zu Fig. 1,
  • Figuren 3 bis 6 je einen teilweisen vertikalen Längsschnitt des Schraubstocks (Schnitt A-B in Fig. 2), in verschiedenen Stellungen beim Spannen und Lösen eines Werkstücks, in grösserem Massstab.
The invention is explained in more detail below with the aid of drawings which illustrate only one embodiment. Show it :
  • FIG. 1 shows a side view of a vice with a clamped workpiece,
  • FIG. 2 shows a bottom view of FIG. 1,
  • Figures 3 to 6 each a partial vertical longitudinal section of the vise (section AB in Fig. 2), in different positions when clamping and loosening a workpiece, on a larger scale.

In den Zeichnungen bezeichnen 1 das Bett (Grundkörper), 2 die feststehende Backe, 3 die bewegbare, nämlich längs des Bettes 1 in einer (nicht dargestellten) Parallelführung verschiebbare Backe, 4 ein zwischen den Backen 2 und 3 eingespanntes Werkstück, 5 die geneigte Spindel mit dem Spindelkopf 6, und 7 die Spindelmutter. Das aus der Spindel 5 und der Spindelmutter 7 bestehende Elementenpaar ist oben in einem Hohlraum 8 der verschiebbaren Backe 3 und unten in einem Längsschlitz 9 des Bettes 1 in dessen Längsrichtung schwenkbar und axial unverschiebbar angeordnet. Zu diesem Zwecke ist eine Kugelfläche des Spindelkopfes 6 auf einer gewölbten Fläche 10 und ein dem Kopf 6 gegenüber an der Spindel 5 durch einen Sprengring 12 gehaltener Ring 13 an einer zur Fläche 10 koaxialen Fläche 14 abgestützt, und die Spindel ist zwischen dem Kopf 6 und dem Ring 13 in einem Langloch 15 angeordnet. Die Spindelmutter 7 ist ebenso wie ein Teil 16 der verschiebbaren Backe 3 im Längsschlitz 9 des Bettes verschiebbar geführt. Das untere Ende der Spindelmutter 7 ist mit einem zylindrischen Querstift 17 versehen, der beiderseits über die Spindelmutter 7 hinausragt. Die Spindelmutter 7 ist durch eine Blattfeder 18 belastet, welche bestrebt ist, die Spindel 5 zusammen mit der Spindelmutter 7 zur festen Backe 2 hin zu schwenken. Das Bett 1 hat beiderseits des Längsschlitzes 9 eine Reihe im Querschnitt rechteckiger, unten offener Quernuten, z. B. 20, 21, 22, die paarweise einander gegenüberliegen, um den Querstift 17 aufzunehmen. Die Tiefe der Nuten 20, 21, 22 ist grösser als der Radius des Stiftquerschnitts. Der Nutquerschnitt kann auch oben abgerundet, also umgekehrt U-förmig sein.In the drawings, 1 denotes the bed (base body), 2 the fixed jaw, 3 the movable jaw, namely, that can be moved along the bed 1 in a parallel guide (not shown), 4 a between the jaws 2 and 3 clamped workpiece, 5 the inclined spindle with the spindle head 6, and 7 the spindle nut. The pair of elements consisting of the spindle 5 and the spindle nut 7 is arranged at the top in a cavity 8 of the displaceable jaw 3 and at the bottom in a longitudinal slot 9 of the bed 1 in the longitudinal direction of which it is pivotable and axially immovable. For this purpose, a spherical surface of the spindle head 6 is supported on a curved surface 10 and a ring 13, which is held opposite the head 6 on the spindle 5 by a snap ring 12, is supported on a surface 14 coaxial with the surface 10, and the spindle is between the head 6 and the ring 13 arranged in an elongated hole 15. The spindle nut 7, like a part 16 of the displaceable jaw 3, is displaceably guided in the longitudinal slot 9 of the bed. The lower end of the spindle nut 7 is provided with a cylindrical cross pin 17 which projects beyond the spindle nut 7 on both sides. The spindle nut 7 is loaded by a leaf spring 18, which strives to pivot the spindle 5 together with the spindle nut 7 to the fixed jaw 2. The bed 1 has on both sides of the longitudinal slot 9 a number of cross-sectionally rectangular, open transverse grooves, z. B. 20, 21, 22, which are opposed in pairs to receive the cross pin 17. The depth of the grooves 20, 21, 22 is greater than the radius of the cross section of the pin. The cross section of the groove can also be rounded at the top, that is to say it can be U-shaped in reverse.

Wenn in einer beliebigen Stellung der verschiebbaren Backe 3, in der der Stift 17 entweder ganz oder teilweise in einer der Nuten ist oder zwischen zwei Nuten durch die Feder 18 an die Fläche 23, in der die Nuten gebildet sind, gedrückt ist, die Spindel 5 gelöst wird, ist die Spindelmutter 7 dem durch die Spindel 5 bewirkten Vorschub und der Federkraft der Feder 18 unterworfen. Die Spindelmutter 7 geht nach unten und schwenkt (um den Spindelkopf 6) in der Zeichnung nach rechts. Dabei stösst eine durch eine Nase 24 an der Spindelmutter 7 gebildete Schulter an eine im Hohlraum 8 der verschiebbaren Backe 3 gebildete Ecke 25, wenn der Stift 17 einen kleinen Abstand von der Fläche 23 hat. In diesem Zustand, der in Fig. 3 gezeigt ist, kann der Stift 17 nicht in eine der Nuten eingreifen, die Backe 3 ist frei verschiebbar.When the spindle 5 is in any position of the displaceable jaw 3, in which the pin 17 is either wholly or partly in one of the grooves or is pressed between two grooves by the spring 18 against the surface 23 in which the grooves are formed is solved, the spindle nut 7 is subjected to the feed caused by the spindle 5 and the spring force of the spring 18. The spindle nut 7 goes down and swivels (around the spindle head 6) to the right in the drawing. A shoulder formed by a nose 24 on the spindle nut 7 abuts a corner 25 formed in the cavity 8 of the displaceable jaw 3 when the pin 17 is at a small distance from the surface 23. In this state, which is shown in Fig. 3, the pin 17 can not engage in one of the grooves, the jaw 3 is freely displaceable.

Wenn die Backe 3 vorgeschoben wird, bis sie an das Werkstück 4 stösst, befindet sich der Stift 17 im allgemeinen nicht vor einer der Nuten, sondern z. B. wie in Fig. 3, vor der Fläche 23 zwischen den Nuten 21 und 22. Beim Anziehen der Spindel 5 berührt der Stift 17 zuerst die Fläche 23, er wird von der Feder 18 an diese Fläche gedrückt und gleitet an ihr, bis er beim weiteren Anziehen der Spindel 5 von der Feder 18 in die Nut 21 gedrückt und beim weiteren Anziehen der Spindel 5 an die in der Zeichnung linke Flanke dieser Nut 21 gepresst wird, wie Fig. 4 zeigt. Dadurch wird die verschiebbare Backe 3 an das Werkstück 4 gepresst, das dieser Backe 3 gegenüber an der festen Backe 2 abgestützt ist (Fig. 1).When the jaw 3 is advanced until it abuts the workpiece 4, the pin 17 is generally not in front of one of the grooves, but z. As in Fig. 3, in front of the surface 23 between the grooves 21 and 22. When tightening the spindle 5, the pin 17 first touches the surface 23, it is pressed by the spring 18 against this surface and slides on it until it when the spindle 5 is further tightened by the spring 18 into the groove 21 and when the spindle 5 is further tightened it is pressed against the left flank of this groove 21 in the drawing, as shown in FIG. 4. As a result, the displaceable jaw 3 is pressed against the workpiece 4, which is supported opposite this jaw 3 on the fixed jaw 2 (FIG. 1).

Beim Lösen der Spindel 5 löst sich der Stift 17 zuerst von der linken Flanke der Nut 21, weil der Abstand zwischen dem Stift 17 und dem Spindelkopf 6 grösser wird und die Feder 18 wirkt. Unter dieser Wirkung stösst der Stift 17 dann an die rechte Flanke der Nut 21, und beim weiteren Lösen der Spindel 5 gleitet der Stift 17 an dieser Nutflanke nach unten, wobei die horizontale Komponente seiner schräg nach unten führenden Bewegung bewirkt, dass die verschiebbare Backe 3 zurückgeschoben wird, wie die Figuren 5 und 6 zeigen. Voraussetzung dafür ist ausser dem senkrechten Verlauf der Nutflanke, dass die Feder 18 den Stift 17 an der rechten Flanke der Nut 21 hält. Schliesslich verlässt der Stift 17 die Nut 21, gleitet an der Fläche 23 nach rechts, bis die durch die Nase 24 gebildete Schulter der Spindelmutter 7 an die Ecke 25 stösst. Damit erreichen die beweglichen Teile der verschiebbaren Backe 3 wieder die in Fig. 3 dargestellte Lage, die Backe 3 ist frei verschiebbar.When the spindle 5 is released, the pin 17 first detaches from the left flank of the groove 21 because the distance between the pin 17 and the spindle head 6 increases and the spring 18 acts. Under this effect, the pin 17 then abuts the right flank of the groove 21, and when the spindle 5 is loosened further, the pin 17 slides downwards on this groove flank, the horizontal component of its obliquely downward movement causing the displaceable jaw 3 is pushed back, as shown in Figures 5 and 6. In addition to the vertical course of the groove flank, a prerequisite for this is that the spring 18 holds the pin 17 on the right flank of the groove 21. Finally, the pin 17 leaves the groove 21 and slides to the right on the surface 23 until the shoulder of the spindle nut 7 formed by the nose 24 abuts the corner 25. The movable parts of the displaceable jaw 3 thus again reach the position shown in FIG. 3, the jaw 3 is freely displaceable.

Bei dem durch Lösen der Spindel 5 bewirkten Zurückschieben der Backe 3 ist das Verhältnis der Spindeldrehung zur horizontalen Komponente des Weges des Stiftes 17 durch die Steigung des Spindelgewindes und die Neigung der Spindel 5 bestimmt und verhältnismässig sehr gross. Es kann also ohne nennenswerte Mühe eine erhebliche Kraft zum Lösen der Backe 3 ausgeübt und diese Backe 3 auch dann ohne weiteres gelöst werden, wenn sie sich in ihrer (nicht dargestellten) Parallelführung bei hoher Spannkraft festgesetzt hat.When the jaw 3 is pushed back by loosening the spindle 5, the ratio of the spindle rotation to the horizontal component of the path of the pin 17 is determined by the pitch of the spindle thread and the inclination of the spindle 5 and is relatively very large. It can therefore be exerted without considerable effort to release the jaw 3 and this jaw 3 can be easily released even if it has stuck in its (not shown) parallel guide with high clamping force.

Claims (6)

1. A vice having a stationary jaw (2), a jaw (3) which is movable along a bed, and a pair of components (5, 7) which consists of an inclined screw spindle (5) and a spindle nut (7) and of which one component (5) is supported on the movable jaw (3) for the swingable mounting of the pair of components (5, 7) and the other (7) can be anchored by means of a transverse pin (17) in a selected groove of a series, extending in the direction of movement of the movable jaw (3), of downwardly-open transverse grooves (20, 21, 22) of the bed (1), and with a spring (18) which loads the pair of components (5, 7) in the direction of their swivel movement directed at the fixed jaw (2), characterised in that the component (5), supported on the movable jaw (3), of the pair of components (3, 5), is held so as to be axially non-displaceable.
2. A vice according to claim 1, characterised in that the surface, facing towards the fixed jaw (2), of the grooves (20, 21, 22) at least in a region bordering on the open groove side, extends flat and at least approximately perpendicularly to the longitudinal direction of the bed (1), and in that the grooves (20, 21, 22) are so deep, and the spring (18) is so dimensioned, that it holds the pin (17), upon the loosening of the spindle (5), against the groove flank facing towards the fixed jaw, so that the movement of the pin (17), acting on the flat groove flank, pushes back the movable jaw (3).
3. A vice according to claim 2, characterised in that the depth of the grooves (20, 21, 22) is greater than the radius of the cylindrical transverse pin (17).
4. A vice according to claim 3, characterised in that the cross-section of the grooves (20, 21, 22) is rectangular or inversely U-shaped.
5. A vice according to one of claims 1 to 4, characterised in that the feed of the component (7) equipped with the transverse pin (17) is limited in a position in which the spring (18) holds the pair of components (5, 7) in an end position of the swivel range, and the transverse pin (17) no longer touches the plane (23) on which the grooves (20, 21, 22) are formed (Fig. 3).
6. A vice according to one of claims 1 to 5, characterised in that the spindle nut (7) is equipped with the transverse pin (17), is spring-loaded (spring 18) and is guided so as to be displaceable in a longitudinal slot (9) of the bed (1), and in that the spindle (5) has a spindle head (6) which is mounted so as to be swingable on the movable jaw (3) and so as to be axially non-displaceable.
EP81106026A 1980-10-21 1981-07-31 Clamp Expired EP0050194B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH7842/80 1980-10-21
CH784280 1980-10-21

Publications (2)

Publication Number Publication Date
EP0050194A1 EP0050194A1 (en) 1982-04-28
EP0050194B1 true EP0050194B1 (en) 1983-11-16

Family

ID=4331232

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81106026A Expired EP0050194B1 (en) 1980-10-21 1981-07-31 Clamp

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EP (1) EP0050194B1 (en)
DE (1) DE3161430D1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988001923A1 (en) * 1986-09-12 1988-03-24 Weber Ag Clamping device for workpieces

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2652946C3 (en) * 1976-11-22 1980-01-17 Apparate- Und Werkzeug Ag, Muri, Aargau (Schweiz) vice

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7306815U (en) * 1973-08-16 Burkhardt Theodor Quick release device
FR958039A (en) * 1950-03-02
DE2652346B2 (en) * 1976-11-17 1980-01-17 Franz 6305 Buseck Orlita Pump, especially metering pump

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2652946C3 (en) * 1976-11-22 1980-01-17 Apparate- Und Werkzeug Ag, Muri, Aargau (Schweiz) vice

Also Published As

Publication number Publication date
DE3161430D1 (en) 1983-12-22
EP0050194A1 (en) 1982-04-28

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