EP1622746A1 - Multiple clamping device - Google Patents

Multiple clamping device

Info

Publication number
EP1622746A1
EP1622746A1 EP03815368A EP03815368A EP1622746A1 EP 1622746 A1 EP1622746 A1 EP 1622746A1 EP 03815368 A EP03815368 A EP 03815368A EP 03815368 A EP03815368 A EP 03815368A EP 1622746 A1 EP1622746 A1 EP 1622746A1
Authority
EP
European Patent Office
Prior art keywords
clamping
jaw
toothing
clamp according
base body
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
EP03815368A
Other languages
German (de)
French (fr)
Other versions
EP1622746B1 (en
Inventor
Adolf Würthele
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
Original Assignee
Gressel AG
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 Gressel AG filed Critical Gressel AG
Publication of EP1622746A1 publication Critical patent/EP1622746A1/en
Application granted granted Critical
Publication of EP1622746B1 publication Critical patent/EP1622746B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B25B1/2405Construction of the jaws
    • B25B1/2478Construction of the jaws with more than one pair of jaws

Definitions

  • the invention relates to a multiple vice for clamping a plurality of workpieces according to the preamble of claim 1.
  • Such clamping devices are used in manufacturing technology for simultaneous clamping of several workpieces. They generally contain a rail-like base body, on which at least one fixed jaw and a plurality of Nerstell jaws arranged in series are provided, each with a first jaw part that can be fixed relative to the base body and a second jaw part that is adjustable in comparison.
  • the connection between the first cheek parts and the base body often takes place via a horizontal mink toothing, which is provided on the upper side of the base body.
  • a corresponding toothing is attached to the underside of the first jaw parts for a positive connection to the base body.
  • the adjustment jaws can be positioned at different locations on the base body.
  • a disadvantage of this solution is that the exposed teeth on the top quickly become dirty due to their exposed position and can also be easily damaged by the workpieces to be clamped. To move the adjustment jaws, they must also be raised by the entire tooth depth of the toothing and only then can they be moved transversely to the toothing.
  • a generic multiple clamp in which several clamping jaws arranged in line can be positioned on a rail-shaped base body.
  • a rack and pinion connection is provided for the positive connection of the clamping jaws and the base body, which is arranged on the inside of a guide channel running in the base body to avoid dirt or damage.
  • the toothed rack connection consists of a toothed rack toothing provided on one side wall of the guide channel, into which a corresponding counter toothing engages on a guide attachment of the clamping jaws which can be displaced within the guide channel.
  • a wedge-shaped adjusting device is provided on the opposite side of the guide attachment to the counter-toothing, through which the guide attachment is pressed in the direction of the rack teeth.
  • the guide approach must be moved by the entire tooth depth before the jaws can be adjusted.
  • the base body is pressed apart during tensioning, which can have an unfavorable effect on the stability.
  • a toothed rack with helical teeth is fastened to an inside of a longitudinal guide groove of a base body.
  • a corresponding helical toothing engages in this helical toothing on a drive element which is arranged on a movable clamping jaw by means of a clamping screw and can be raised and lowered.
  • a lateral wedge effect is exerted on the movable clamping jaw when the clamping piece engages in the rack, as a result of which a high clamping force is achieved.
  • the drive element in order to be able to move the movable clamping jaw to a desired position in this known machine vice, the drive element must first be lowered into a lowermost position by a large number of rotations of the clamping screw, which is associated with increased expenditure of time and assembly.
  • the object of the invention is to provide a multiple clamp of the type mentioned, which enables quick and easy positioning of the adjustment jaws.
  • a major advantage of the multiple clamp according to the invention is that the toothing for positioning the adjusting jaws does not have to be engaged and disengaged over its entire tooth depth.
  • the clamping device only has to be loosened slightly and then releases the sliding element for easy pulling out or engagement. This enables particularly quick and safe handling. Due to the central clamping of the sliding element between the two side cheeks pressed inwards, there is also no lateral displacement of the adjusting jaws.
  • the bracing of the sliding element between the side cheeks has a positive effect on the stability of the base body. Due to the internal arrangement of the toothing, it is also optimally protected against contamination or damage.
  • the clamping device consists of a clamping piece which can be adjusted with the aid of a clamping screw or another suitable clamping device, which engages in a longitudinal groove delimited between the side cheeks and has opposite upper inclined surfaces for contacting corresponding lower inclined surfaces of the two side cheeks.
  • a clamping screw By tightening the clamping screw, the side cheeks can be pressed inwards in a simple manner for mutual bracing and the sliding element arranged between them can be clamped. Due to the clamping piece with the inclined surfaces, the clamping forces are divided so that, in addition to a purely vertical clamping force, a resulting transverse force is achieved, which additionally reinforces the positive locking in the toothing and eliminates the toothing play necessary to move the adjusting jaw.
  • the adjustment jaws consist of an adjustment jaw body which can be fixed with the aid of the displacement element relative to the base body and a clamping jaw which is arranged on the base in an adjustable manner.
  • a contact surface is provided on the adjusting jaw body, which serves as a fixed stop surface for the next workpiece to be clamped.
  • the sliding element is connected to a handle element arranged on the upper side of the adjusting jaw for simple actuation.
  • the displacement element is expediently connected via two spacer sleeves and fastening screws which can be displaced within the adjusting jaw body.
  • the rail-shaped base body consists of a base rail and two rail-shaped side walls, which are screwed to the base rail.
  • Such a design ensures the lateral flexibility of the side cheeks.
  • This version also has the advantage that the base rail can be replaced relatively easily and adapted to different clamping requirements of the base.
  • a base rail provided with indexing bolts, sliding blocks or different grid holes, for example, can be used.
  • the base body can also be made in one piece.
  • Figure 1 shows a clamping device according to the invention in a perspective view
  • Figure 2 shows the clamping device shown in Figure 1 in a longitudinal section
  • Figure 3 is a sectional view taken along line A-A of Figure 2;
  • Figure 4 is a sectional view taken along line B-B of Figure 2;
  • Figure 5 is an enlarged view of the fixed jaw in a longitudinal section
  • Figure 6 is an enlarged view of the adjustment jaw in a longitudinal section
  • Figure 7 is a sectional view taken along the line C-C of Figure 2.
  • the multiple clamp shown schematically in Figures 1 and 2 contains a rail-shaped base body 1 with two spaced-apart side cheeks 2 and 3, on which a fixed jaw 4 and a plurality of adjusting jaws 5 are arranged in series.
  • the two side walls 2 and 3 are designed as separate rail-shaped side parts which are fastened to the two sides of a base rail 7 by means of lateral screws 6.
  • This design of the base body 1 has, in addition to the simpler production, the additional advantage that the base rail 7 can be easily replaced and the multiple clamps can thus be adapted relatively easily to different clamping requirements.
  • a base rail 7 provided with indexing bolts, sliding blocks or different grid holes can be used.
  • the base body 1 can also be designed in one piece.
  • the two rail-shaped side cheeks 2 and 3 have grooves 8 and extending in the longitudinal direction on the inner sides facing one another opposite lower inclined surfaces 9.
  • a toothing 10 is also provided, which extends on both sides of the groove 8 for reasons of simplified production.
  • a corresponding counter-toothing 11 engages in the toothing 10 on the upper side surface of the side cheek 2 on a displacement element 12 which can be seen in FIG. 4 and is explained in more detail below, which serves for the positionally accurate connection of the adjusting jaw 5 shown there to the base body 1.
  • the base rail 7 has no corresponding counter toothing on the side surface facing the toothing 10. If required, however, counter-toothing could also be provided on the base rail 7.
  • a substantially T-shaped longitudinal groove with an upper guide groove 13 between the two upper side surfaces on the inside of the side cheeks 2 and 3 is thus delimited by the base rail 7 and the two side cheeks 2 and 3 screwed thereto.
  • a scale 14 is attached as a positioning aid for the workpieces and / or the jaws.
  • a corresponding scaling can also be provided on the other side cheek 3.
  • indexing bolts 15 are arranged on a lower part for precise fitting.
  • the basic body 1 described above can be fastened in a manner known per se via the indexing bolts 15, sliding blocks and the like on a machine table or another suitable base of a processing machine.
  • the base body 1 carries the fixed jaw 4 and the adjusting jaws 5.
  • the adjusting jaws 5 contain an adjusting jaw body 16 with a lower guide piece 17, which is arranged in the guide groove 13 between the two side cheeks 2 and 3 so as to be displaceable.
  • a clamping piece 18 Arranged below the guide piece 17 is a clamping piece 18, also shown in FIGS. 4 and 7, which is held on the adjusting jaw body 16 in a vertically movable manner by a first clamping screw 19.
  • the clamping piece 18 shown in cross section in FIG. 7 protrudes with its two outer ends into the two lateral grooves 8 of the side cheeks 2 and 3.
  • the clamping piece 18 contains two upper inclined surfaces 20 which come into contact with the lower inclined surfaces 9 of the two side cheeks 2 and 3 when the clamping screw 19 shown in FIG.
  • the adjusting jaw body 16 has a straight contact surface 50 on one side and an oblique clamping surface 21 on the other side.
  • a groove 22 in the adjusting jaw body 16 the above-mentioned displacement element 12 with the lateral counter-toothing 11 is guided so as to be vertically displaceable between a lower engagement position and an upper release position.
  • An inclined surface 23 of a clamping jaw 24 bears against the inclined clamping surface 21 of the adjusting jaw body 16.
  • the clamping jaw 24 can be adjusted in the longitudinal direction of the base body 1 by means of a second clamping screw 25 screwed to the clamping piece 18 and running at an angle.
  • the second clamping screw 25 By means of the second clamping screw 25, an additional clamping force is also developed via the clamping piece 18, which increases the clamping effect described above.
  • the inclined surfaces 21 and 23 are chosen such that the clamping movement is directed downwards and forwards. This prevents the workpieces from being lifted off.
  • the opening of the clamping jaw 24 is effected by means of a pin 26 as a driving element.
  • a second pin 27, which can be seen in FIG. 7 and engages in a groove 28, serves as a guide and stroke limitation when the clamping jaw 24 is opened.
  • the clamping surface 29 of the clamping jaw 24 is preferably profiled, but can be adapted in any way to the clamping requirements (smooth, cambered etc.).
  • a top jaw 30 shown in FIG. 6 can optionally be mounted on the clamping surface 29 of the clamping jaw 24. It is intended for cases in which a resulting downward clamping movement is not advantageous. They can be replaced quickly and easily, even without screws.
  • a groove 31 and 32 in the side cheeks 2 and 3 shown in FIGS. 3 and 7 is used for this purpose, via which the top jaws 30 can be pivoted in by means of a clamping spring and do not stand out when the clamping jaw 24 is opened. In the horizontal movement (opening of the top jaw), they are held by spring elements 33 shown in FIG. 7, which engage in grooves 34 in the clamping jaw 24.
  • the displacement element 12 To raise and lower the displacement element 12, it is connected to a grip element 37 by means of two fastening screws 35 shown in FIG. 4 and two spacer sleeves 36 guided displaceably within the clamping jaw body 16.
  • a transverse groove 38 On the upper side of the jaw body 16, a transverse groove 38 is provided for receiving the strip-shaped grip element 37 in the lowered engagement position.
  • a stroke limiter 39 for the displacement element 12 is also arranged within the jaw body 16.
  • the fixed jaw 4 shown in FIGS. 3 and 5 contains a fixed jaw body 41 which is provided with a stop surface 40 and which rests on the two side cheeks 2 and 3.
  • a sliding block 42 On the underside of the fixed jaw body 41, a sliding block 42 is screwed with a side toothing 43 for engagement in the toothing 10 on the inside of the side cheek 2.
  • a clamping piece 44 is arranged below the sliding block 42 and is held on the fixed jaw body 41 in a vertically movable manner by two clamping screws 45.
  • the clamping piece 44 also has upper inclined surfaces for contacting the lower inclined surfaces of the side cheeks 2 and 3.
  • the guide play 46 is designed on the fixed jaw 4 in such a way that it is smaller than that of the adjusting jaw 5. In the clamped state, a necessary basic game 47 remains for the adjusting jaw to actuate the displacement elements 12.
  • the sliding block 42 of the fixed jaw cannot be displaced, since here rapid implementation is usually not required. A basic shift, which may be necessary if there is sufficient space, is possible.
  • the exact position of the fixed jaw 4 is given by the positive connection with the teeth 10 and 43.
  • the positions of the fixed jaw 4 and the adjusting jaw 5 can be read off on edges 48 and 49 of their stop faces on the scale 14 and can be reproduced repeatedly
  • the first workpiece is placed on the stop surface 40 of the fixed jaw 4.
  • the first adjusting jaw 5 inserted into the longitudinal groove is brought up to the workpiece with the grip element 37 raised and positioned approximately 1-2 mm in front of the workpiece.
  • the grip element 37 is then pressed down again into the transverse groove 38 of the adjusting jaw body 16.
  • the toothings 10 and 11 are matched to one another in such a way that the displacement element 12 can be displaced without any force when the clamping piece 18 is released.
  • the clamping screw 19 is tightened with a predetermined torque.
  • the two side cheeks 2 and 3 are pressed inwards and the sliding element 12 located between them is clamped without play.
  • the adjusting jaw body 16 is thus also fixed in a positive and non-positive manner.
  • the clamping jaws 24 can then be moved and the workpiece can be clamped.
  • the straight contact surface 50 of the first adjusting jaw 5 simultaneously forms the fixed stop surface for the next workpiece, which is clamped in a corresponding manner by a second adjusting jaw 5 can be. If, on the other hand, the clamping screw 19 is loosened again, the two side cheeks return to their starting position and release the displacement element 12 for simple displacement.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Vehicle Body Suspensions (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Clamps And Clips (AREA)

Abstract

The invention relates to a multiple clamping device for clamping a plurality of pieces. The multiple clamping device comprises a base (1), at least one stationary jaw (4) disposed on the base (1) and a plurality of adjustable jaws (5) that are displaceably guided between two lateral cheeks (2, 3) of the base (1) and that can be linked with the base (1) in a positively locking manner by means of a mating toothed section (11) that can be engaged with an inner lateral toothed section (10) on a lateral cheek (2). The mating toothed section (11) is disposed on a sliding element (12), displaceable between a lifted release position and a lowered position of engagement, and the clamping jaws (5) have a clamping device (18, 19) each for mutually bracing the two lateral cheeks (2, 3) for clamping the sliding element (12) between the lateral cheeks (2, 3) in the position of engagement, thereby allowing for a rapid and simple positioning of the adjustable cheeks.

Description

Mehrfachspanner Multiple fixture
Die Erfindung betrifft einen Mehrfachspanner zum Spannen von mehreren Werkstücken nach dem Oberbegriff des Anspruchs 1.The invention relates to a multiple vice for clamping a plurality of workpieces according to the preamble of claim 1.
Derartige Spannvorrichtungen werden in der Fertigungstechnik zum gleichzeitigen Festspannen von mehreren Werkstücken eingesetzt. Sie enthalten in der Regel einen schienenartigen Grundkörper, an dem zumindest eine Festbacke und mehrere in Reihe angeordnete Nerstellbacken mit jeweils einem gegenüber dem Grundkörper fϊxierbaren ersten Backenteil und einem demgegenüber verstellbaren zweiten Backenteil vorgesehen sind. Die Verbindung zwischen den ersten Backenteilen und dem Grundkörper erfolgt bei bekannten Mehrfachspannern vielfach über eine horizontale Nerzahnung, die auf der Oberseite des Grundkörpers vorgesehen ist. An der Unterseite der ersten Backenteile ist eine entsprechende Verzahnung zur formschlüssigen Verbindung mit dem Grundkörper angebracht. Dadurch können die Verstellbacken an unterschiedlichen Stellen des Grundkörpers positioniert werden. Ein Nachteil dieser Lösung besteht jedoch darin, daß die an der Oberseite freiliegende Verzahnung durch ihre exponierte Lage schnell verschmutzt und auch durch die zu spannenden Werkstücke leicht beschädigt werden kann. Zum Verschieben der Verstellbacken müssen diese außerdem auch um die gesamte Zahntiefe der Verzahnung angehoben werden und können erst dann quer zur Verzahnung verschoben werden.Such clamping devices are used in manufacturing technology for simultaneous clamping of several workpieces. They generally contain a rail-like base body, on which at least one fixed jaw and a plurality of Nerstell jaws arranged in series are provided, each with a first jaw part that can be fixed relative to the base body and a second jaw part that is adjustable in comparison. In known multiple clamps, the connection between the first cheek parts and the base body often takes place via a horizontal mink toothing, which is provided on the upper side of the base body. A corresponding toothing is attached to the underside of the first jaw parts for a positive connection to the base body. As a result, the adjustment jaws can be positioned at different locations on the base body. A disadvantage of this solution, however, is that the exposed teeth on the top quickly become dirty due to their exposed position and can also be easily damaged by the workpieces to be clamped. To move the adjustment jaws, they must also be raised by the entire tooth depth of the toothing and only then can they be moved transversely to the toothing.
Aus der DE 200 08 648 Ul ist ein gattungsgemäßer Mehrfachspanner bekannt, bei dem auf einem schienenförmigen Grundkörper mehrere in Linie angeordnete Spannbacken positionierbar sind. Für die formschlüssige Verbindung von Spannbacken und Grundkörper ist eine Zahnstangenverbindung vorgesehen, die zur Vemeidung von Verschmutzungen oder Beschädigungen an der Innenseite eines im Grundkörper verlaufenden Führungskanals angeordnet ist. Die Zahnstangenverbindung besteht aus einer an der einen Seitenwand des Führungskanals vorgesehenen Zahnstangenverzahnung, in die eine entsprechende Gegenverzahnung an einem innerhalb des Führungskanals verschiebbaren Führungsansatz der Spannbacken eingreift. An der zur Gegenverzahnung gegenüberliegenden Seite des Führungsansatzes ist eine keilförmige AnStelleinrichtung vorgesehen, durch welche der Führungsansatz in Richtung der Zahnstangenverzahnung gedrückt wird. Bei dieser gattungsgemäßen Spannvorrichtung muß jedoch der Führungsansatz um die gesamte Verzahntiefe verschoben werden, bevor eine Verstellung der Spannbacken erfolgen kann. Außerdem wird der Grundkörper beim Verspannen auseinandergedrückt, was sich ungünstig auf die Stabilität auswirken kann.From DE 200 08 648 Ul a generic multiple clamp is known, in which several clamping jaws arranged in line can be positioned on a rail-shaped base body. A rack and pinion connection is provided for the positive connection of the clamping jaws and the base body, which is arranged on the inside of a guide channel running in the base body to avoid dirt or damage. The toothed rack connection consists of a toothed rack toothing provided on one side wall of the guide channel, into which a corresponding counter toothing engages on a guide attachment of the clamping jaws which can be displaced within the guide channel. A wedge-shaped adjusting device is provided on the opposite side of the guide attachment to the counter-toothing, through which the guide attachment is pressed in the direction of the rack teeth. At this Generic clamping device, however, the guide approach must be moved by the entire tooth depth before the jaws can be adjusted. In addition, the base body is pressed apart during tensioning, which can have an unfavorable effect on the stability.
Auch bei einem aus der DE 1 297 085 B bekannten Maschinenschraubstock ist an einer Innenseite einer längsverlaufenden Führungsnut eines Grundkörpers eine Zahnstange mit Schrägverzahnung befestigt. In diese Schrägverzahnung greift eine dazu korrespondierende Schräg Verzahnung an einem Triebstück ein, das an einer beweglichen Klemmbacke über eine Spannschraube heb- und senkbar angeordnet ist. Durch diese Anordnung wird auf die bewegliche Klemmbacke beim Eingriff des Klemmstücks in die Zahnstange eine seitliche Keilwirkung ausgeübt, wodurch eine hohe Spannkraft erreicht wird. Um jedoch bei diesem bekannten Maschinenschraubstock die bewegliche Klemmbacke an eine gewünschte Position bewegen zu können, muß das Triebstück zunächst durch eine Vielzahl von Drehungen der Spannschraube in eine unterste Stellung abgesenkt werden, was mit einem erhöhten Zeit- und Montageaufwand verbunden ist.In a machine vice known from DE 1 297 085 B, too, a toothed rack with helical teeth is fastened to an inside of a longitudinal guide groove of a base body. A corresponding helical toothing engages in this helical toothing on a drive element which is arranged on a movable clamping jaw by means of a clamping screw and can be raised and lowered. As a result of this arrangement, a lateral wedge effect is exerted on the movable clamping jaw when the clamping piece engages in the rack, as a result of which a high clamping force is achieved. However, in order to be able to move the movable clamping jaw to a desired position in this known machine vice, the drive element must first be lowered into a lowermost position by a large number of rotations of the clamping screw, which is associated with increased expenditure of time and assembly.
Aufgabe der Erfindung ist es, einen Mehrfachspanner der eingangs genannten Art zu schaffen, der eine schnelle und einfache Positionierung der Verstellbacken ermöglicht.The object of the invention is to provide a multiple clamp of the type mentioned, which enables quick and easy positioning of the adjustment jaws.
Diese Aufgabe wird durch einen Mehrfachspanner mit den Merkmalen des Anspruchs 1 gelöst. Zweckmäßige Ausfuhrungsformen und vorteilhafte Weiterbildungen der Erfindung sind Gegenstand der Unteransprüche.This object is achieved by a multiple clamp with the features of claim 1. Appropriate embodiments and advantageous developments of the invention are the subject of the dependent claims.
Ein wesentlicher Vorteil des erfindungsgemäßen Mehrfachspanners besteht darin, daß die Verzahnung zur Positionierung der Verstellbacken nicht über ihre gesamte Verzahntiefe ein- und ausgerückt werden muß. Die Klemmeinrichtung muß nur geringfügig gelöst werden und gibt dann bereits das Verschiebelement zum einfachen Herauziehen oder Einrücken frei. Dadurch wird eine besonders schnelle und sichere Handhabung ermöglicht. Durch die zentrische Klemmung des Verschiebeelements zwischen den beiden nach innen gedrückten Seitenwangen erfolgt auch keine seitliche Verschiebung der Verstellbacken. Die Verspannung des Verschiebeelements zwischen den Seitenwangen wirkt sich positiv auf die Stabilität des Grundkörpers aus. Durch die innenliegende Anordnung der Verzahnung ist diese außerdem vor Verschmutzung oder Beschädigung optimal geschützt. In einer besonders zweckmäßigen Ausführung besteht die Klemmeinrichtung aus einem mit Hilfe einer Spannschraube oder einer anderen geeigneten Spanneinrichtung verstellbaren Klemmstück, das in eine zwischen den Seitenwangen begrenzte Längsnut eingreift und entgegengesetzte obere Schrägflächen zur Anlage an entsprechenden unteren Schrägflächen der beiden Seitenwangen aufweist. Durch Anziehen der Spannschraube können somit die Seitenwangen zur gegenseitigen Verspannung auf einfache Weise nach innen gedrückt und das dazwischen angeordnete Verschiebeelement geklemmt werden. Durch das Klemmstück mit den schrägen Flächen werden die Klemmkräfte so aufgeteilt, daß neben einer rein vertikalen Klemmkraf noch eine resultierende Querkraft erreicht wird, die den Formschluß in der Verzahnung zusätzlich verstärkt und das notwendige Verzahnungsspiel zum Verschieben der Verstellbacke eliminiert.A major advantage of the multiple clamp according to the invention is that the toothing for positioning the adjusting jaws does not have to be engaged and disengaged over its entire tooth depth. The clamping device only has to be loosened slightly and then releases the sliding element for easy pulling out or engagement. This enables particularly quick and safe handling. Due to the central clamping of the sliding element between the two side cheeks pressed inwards, there is also no lateral displacement of the adjusting jaws. The bracing of the sliding element between the side cheeks has a positive effect on the stability of the base body. Due to the internal arrangement of the toothing, it is also optimally protected against contamination or damage. In a particularly expedient embodiment, the clamping device consists of a clamping piece which can be adjusted with the aid of a clamping screw or another suitable clamping device, which engages in a longitudinal groove delimited between the side cheeks and has opposite upper inclined surfaces for contacting corresponding lower inclined surfaces of the two side cheeks. By tightening the clamping screw, the side cheeks can be pressed inwards in a simple manner for mutual bracing and the sliding element arranged between them can be clamped. Due to the clamping piece with the inclined surfaces, the clamping forces are divided so that, in addition to a purely vertical clamping force, a resulting transverse force is achieved, which additionally reinforces the positive locking in the toothing and eliminates the toothing play necessary to move the adjusting jaw.
Die Verstellbacken bestehen in einer weiteren vorteilhaften Ausführung aus einem mit Hilfe des Verschiebelements gegenüber dem Grundkörper fixierbaren Verstellbackenkörper und einer an diesem verstellbar angeordneten Spannbacke. An der zur Spannbacke entgegengesetzten Seite ist am Verstellbackenkörper eine Anlagefläche vorgesehen, die als feststehende Anschlagfläche für das nächste zu spannende Werkstück dient.In a further advantageous embodiment, the adjustment jaws consist of an adjustment jaw body which can be fixed with the aid of the displacement element relative to the base body and a clamping jaw which is arranged on the base in an adjustable manner. On the side opposite the clamping jaw, a contact surface is provided on the adjusting jaw body, which serves as a fixed stop surface for the next workpiece to be clamped.
Das Verschiebeelement ist zur einfachen Betätigung mit einem an der Oberseite der Verstellbacke angeordneten Griffelement verbunden. Zweckmäßigerweise ist das Verschiebeelement über zwei innerhalb des Verstellbackenkörpers verschiebbare Distanzhülsen und Befestigungsschrauben verbunden.The sliding element is connected to a handle element arranged on the upper side of the adjusting jaw for simple actuation. The displacement element is expediently connected via two spacer sleeves and fastening screws which can be displaced within the adjusting jaw body.
In einer fertigungstechnisch einfachen Ausführung besteht der schienenförmige Grundkörper aus einer Basisschiene und zwei schienenförmigen Seitenwangen, die mit der Basisschiene verschraubt sind. Durch eine derartige Ausfuhrung wird die seitliche Flexiblität der Seitenwangen gewährleistet. Diese Ausführung weist außerdem den Vorteil auf, daß die Basisschiene relativ einfach ausgetauscht und an unterschiedliche Aufspannanforderungen der Unterlage angepaßt werden kann. Je nach Ausgestaltung der Unterlage kann so eine z.B. mit Indexierbolzen, Nutensteinen oder unterschiedlichen Rasterbohrungen versehene Basisschiene verwendet werden. Der Grundkörper kann aber auch in einer einteiligen Ausfuhrung gefertigt sein. Weitere Besonderheiten und Vorzüge der Erfindung ergeben sich aus der folgenden Beschreibung eines bevorzugten Ausfuhrungsbeispiels anhand der Zeichnung. Es zeigen:In a production-technically simple version, the rail-shaped base body consists of a base rail and two rail-shaped side walls, which are screwed to the base rail. Such a design ensures the lateral flexibility of the side cheeks. This version also has the advantage that the base rail can be replaced relatively easily and adapted to different clamping requirements of the base. Depending on the design of the underlay, a base rail provided with indexing bolts, sliding blocks or different grid holes, for example, can be used. The base body can also be made in one piece. Further special features and advantages of the invention result from the following description of a preferred exemplary embodiment with reference to the drawing. Show it:
Figur 1 eine erfindungsgemäße Spannvorrichtung in einer Perspektivansicht;Figure 1 shows a clamping device according to the invention in a perspective view;
Figur 2 die in Figur 1 dargestellte Spannvorrichtung in einem Längsschnitt, einerFigure 2 shows the clamping device shown in Figure 1 in a longitudinal section, a
Seitenansicht und einer Draufsicht;Side view and a top view;
Figur 3 eine Schnittansicht entlang der Linie A-A von Figur 2;Figure 3 is a sectional view taken along line A-A of Figure 2;
Figur 4 eine Schnittansicht entlang der Linie B-B von Figur 2;Figure 4 is a sectional view taken along line B-B of Figure 2;
Figur 5 eine vergrößerter Ansicht der Festbacke in einem Längsschnitt;Figure 5 is an enlarged view of the fixed jaw in a longitudinal section;
Figur 6 eine vergrößerte Ansicht der Verstellbacke in einem Längsschnitt undFigure 6 is an enlarged view of the adjustment jaw in a longitudinal section and
Figur 7 eine Schnittansicht entlang der Linie C-C von Figur 2.Figure 7 is a sectional view taken along the line C-C of Figure 2.
Der in den Figuren 1 und 2 schematisch dargestellte Mehrfachspanner enthält einen schienenförmigen Grundkörper 1 mit zwei voneinander beabstandeten Seitenwangen 2 und 3, auf denen eine Festbacke 4 und mehrere in Reihe liegende Verstellbacken 5 angeordnet sind. Bei der gezeigten Ausführung sind die beiden Seitenwangen 2 und 3 als gesonderte schienenförmige Seitenteile ausgeführt, die über seitliche Schrauben 6 an den beiden Seiten einer Basisschiene 7 befestigt sind. Diese Ausführung des Grundkörpers 1 weist neben der einfacheren Fertigung den zusätzlichen Vorteil auf, daß die Basisschiene 7 einfach ausgetauscht und der Mehrfachspanner damit relativ einfach an unterschiedliche Aufspannanforderungen angepaßt werden kann. Je nach Ausgestaltung der Unterlage kann so z.B. eine mit Indexierbolzen, Nutensteinen oder unterschiedlichen Rasterbohrungen versehene Basisschiene 7 verwendet werden. Der Grundkörper 1 kann aber auch in einteiliger Form ausgeführt sein.The multiple clamp shown schematically in Figures 1 and 2 contains a rail-shaped base body 1 with two spaced-apart side cheeks 2 and 3, on which a fixed jaw 4 and a plurality of adjusting jaws 5 are arranged in series. In the embodiment shown, the two side walls 2 and 3 are designed as separate rail-shaped side parts which are fastened to the two sides of a base rail 7 by means of lateral screws 6. This design of the base body 1 has, in addition to the simpler production, the additional advantage that the base rail 7 can be easily replaced and the multiple clamps can thus be adapted relatively easily to different clamping requirements. Depending on the design of the document, e.g. a base rail 7 provided with indexing bolts, sliding blocks or different grid holes can be used. The base body 1 can also be designed in one piece.
Wie aus Figur 3 hervorgeht, weisen die beiden schienenförmigen Seitenwangen 2 und 3 an den einander zugewandten inneren Seiten in Längsrichtung verlaufende Nuten 8 und entgegengesetzte untere Schrägflächen 9 auf. An der inneren Seitenfläche der einen Seitenwange 2 ist außerdem eine Verzahnung 10 vorgesehen, die sich aus Gründen der vereinfachten Herstellung auf beiden Seiten der Nut 8 erstreckt. In die Verzahnung 10 an der oberen Seitenfläche der Seitenwange 2 greift eine entsprechende Gegenverzahnung 11 an einem in Figur 4 erkennbaren und im folgenden noch näher erläuterten Verschiebeelement 12 ein, das zur positionsgenauen Verbindung der dort gezeigten Verstellbacke 5 mit dem Grundkörper 1 dient. Die Basisschiene 7 weist bei der gezeigten Ausführung an der zur Verzahnung 10 gewandten Seitenfläche keine entsprechende Gegenverzahnung auf. Bei Bedarf könnte jedoch auch an der Basisschiene 7 eine Gegenverzahnung vorgesehen werden.As can be seen from FIG. 3, the two rail-shaped side cheeks 2 and 3 have grooves 8 and extending in the longitudinal direction on the inner sides facing one another opposite lower inclined surfaces 9. On the inner side surface of the one side cheek 2, a toothing 10 is also provided, which extends on both sides of the groove 8 for reasons of simplified production. A corresponding counter-toothing 11 engages in the toothing 10 on the upper side surface of the side cheek 2 on a displacement element 12 which can be seen in FIG. 4 and is explained in more detail below, which serves for the positionally accurate connection of the adjusting jaw 5 shown there to the base body 1. In the embodiment shown, the base rail 7 has no corresponding counter toothing on the side surface facing the toothing 10. If required, however, counter-toothing could also be provided on the base rail 7.
Von der Basisschiene 7 und den beiden mit dieser verschraubten Seitenwangen 2 und 3 wird so eine im wesentlichen T-förmige Längsnut mit einer oberen Führungsnut 13 zwischen den beiden oberen Seitenflächen an der Innenseite der Seitenwangen 2 und 3 begrenzt. An der oben abgeschrägten Außenseite der Seitenwange 2 ist eine Skalierung 14 als Positionierhilfe für die Werkstücke und/oder die Backen angebracht. Auch an der anderen Seitenwange 3 kann eine entsprechende Skalierung vorgesehen sein. An der Basisschiene 7 sind nach unten vorstehende Indexierbolzen 15 zur paßgenauen Befestigung auf einem Unterteil angeordnet. Der vorstehend beschriebene Grundkörper 1 ist in an sich bekannter Weise über die Indexierbolzen 15, Nutensteine und dgl. auf einem Maschinentisch oder einer anderen geeigneten Unterlage einer Bearbeitungsmaschine befestigbar. Der Grundkörper 1 trägt die Festbacke 4 und die Verstellbacken 5.A substantially T-shaped longitudinal groove with an upper guide groove 13 between the two upper side surfaces on the inside of the side cheeks 2 and 3 is thus delimited by the base rail 7 and the two side cheeks 2 and 3 screwed thereto. On the outside of the side cheek 2, which is bevelled at the top, a scale 14 is attached as a positioning aid for the workpieces and / or the jaws. A corresponding scaling can also be provided on the other side cheek 3. On the base rail 7 protruding indexing bolts 15 are arranged on a lower part for precise fitting. The basic body 1 described above can be fastened in a manner known per se via the indexing bolts 15, sliding blocks and the like on a machine table or another suitable base of a processing machine. The base body 1 carries the fixed jaw 4 and the adjusting jaws 5.
Wie besonders aus Figur 6 hervorgeht, enthalten die Verstellbacken 5 einen Verstellbackenkörper 16 mit einem unteren Führungsstück 17, das in der Führungsnut 13 zwischen den beiden Seitenwangen 2 und 3 verschiebbar angeordnet ist. Unterhalb des Führungsstücks 17 ist ein auch in den Figuren 4 und 7 dargestelltes Klemmstück 18 angeordnet, das durch eine erste Spannschraube 19 vertikal beweglich an dem Verstellbackenkörper 16 gehalten ist. Das in Figur 7 im Querschnitt gezeigte Klemmstück 18 ragt mit seinen beiden äußeren Enden in die beiden seitlichen Nuten 8 der Seitenwangen 2 und 3 hinein. Das Klemmstück 18 enthält zwei obere Schrägflächen 20 die beim Anziehen der in Figur 6 gezeigten Spannschraube 19 zu Anlage an den unteren Schrägflächen 9 der beiden Seitenwangen 2 und 3 gelangen und beim weiteren Anziehen die beiden Seitenwangen 2 und 3 zur Erzeugung einer Klemmkraft nach innen drücken. Der Verstellbackenkörper 16 weist gemäß Figur 6 an der einen Seite eine gerade Anlagefläche 50 und an der anderen Seite eine schräge Spannfläche 21 auf. In einer Nut 22 im Verstellbackenkörper 16 ist das vorstehend bereits erwähnte Verschiebeelement 12 mit der seitlichen Gegenverzahnung 11 zwischen einer unteren Eingriffsstellung und einer oberen Lösestellung vertikal verschiebbar gefuhrt. An der schrägen Spannfläche 21 des Verstellbackenkörpers 16 liegt eine schräge Fläche 23 eines Spannbackens 24 an. Über eine mit dem Klemmstück 18 verschraubte, schräg verlaufende zweite Spannschraube 25 ist der Spannbacken 24 in der Längsrichtung des Grundkörpers 1 verstellbar. Durch die zweite Spannschraube 25 wird über das Klemmstück 18 ferner eine zusätzliche Klemmkraft entwickelt, die die oben beschriebene Klemmwirkung verstärkt. Die schrägen Flächen 21 und 23 sind derart gewählt, daß die Spannbewegung nach unten und vorne geleitet wird. Dadurch wird ein Abheben der Werkstücke (Niederzug) verhindert. Das Öffnen der Spannbacke 24 wird mittels eines Stifts 26 als Mitnahmeelement bewirkt. Ein in Figur 7 erkennbarer zweiter Stift 27, der in eine Nut 28 eingreift, dient als Führung und Hubbegrenzung beim Öffnen der Spannbacke 24. Die Spannfläche 29 der Spannbacke 24 ist vorzugsweise profiliert, kann jedoch in beliebiger Weise an die Spannanforderungen angepaßt werden (glatt, bombiert usw.).As can be seen particularly from FIG. 6, the adjusting jaws 5 contain an adjusting jaw body 16 with a lower guide piece 17, which is arranged in the guide groove 13 between the two side cheeks 2 and 3 so as to be displaceable. Arranged below the guide piece 17 is a clamping piece 18, also shown in FIGS. 4 and 7, which is held on the adjusting jaw body 16 in a vertically movable manner by a first clamping screw 19. The clamping piece 18 shown in cross section in FIG. 7 protrudes with its two outer ends into the two lateral grooves 8 of the side cheeks 2 and 3. The clamping piece 18 contains two upper inclined surfaces 20 which come into contact with the lower inclined surfaces 9 of the two side cheeks 2 and 3 when the clamping screw 19 shown in FIG. 6 is pressed and, when tightened further, press the two side cheeks 2 and 3 inwards to generate a clamping force. 6, the adjusting jaw body 16 has a straight contact surface 50 on one side and an oblique clamping surface 21 on the other side. In a groove 22 in the adjusting jaw body 16, the above-mentioned displacement element 12 with the lateral counter-toothing 11 is guided so as to be vertically displaceable between a lower engagement position and an upper release position. An inclined surface 23 of a clamping jaw 24 bears against the inclined clamping surface 21 of the adjusting jaw body 16. The clamping jaw 24 can be adjusted in the longitudinal direction of the base body 1 by means of a second clamping screw 25 screwed to the clamping piece 18 and running at an angle. By means of the second clamping screw 25, an additional clamping force is also developed via the clamping piece 18, which increases the clamping effect described above. The inclined surfaces 21 and 23 are chosen such that the clamping movement is directed downwards and forwards. This prevents the workpieces from being lifted off. The opening of the clamping jaw 24 is effected by means of a pin 26 as a driving element. A second pin 27, which can be seen in FIG. 7 and engages in a groove 28, serves as a guide and stroke limitation when the clamping jaw 24 is opened. The clamping surface 29 of the clamping jaw 24 is preferably profiled, but can be adapted in any way to the clamping requirements (smooth, cambered etc.).
An der Spannfläche 29 des Spannbackens 24 ist optional eine in Figur 6 gezeigte Aufsatzbacke 30 montierbar. Sie ist für solche Fälle gedacht, bei denen eine resultierende Spannbewegung nach unten nicht vorteilhaft ist. Sie sind auch ohne Schrauben schnell und einfach austauschbar. Hierzu dient je eine in den Figuren 3 und 7 gezeigte Nut 31 und 32 in den Seitenwangen 2 und 3, über welche die Aufsatzbacken 30 mittels einer Klemmfeder eingeschwenkt werden können und sich beim Öffnen der Spannbacke 24 nicht abheben. In der horizontalen Bewegung (Öffnen der Aufsatzbacke) sind sie durch in Figur 7 gezeigte Federelemente 33 gehalten, die in Nuten 34 bei der Spannbacke 24 eingreifen.A top jaw 30 shown in FIG. 6 can optionally be mounted on the clamping surface 29 of the clamping jaw 24. It is intended for cases in which a resulting downward clamping movement is not advantageous. They can be replaced quickly and easily, even without screws. A groove 31 and 32 in the side cheeks 2 and 3 shown in FIGS. 3 and 7 is used for this purpose, via which the top jaws 30 can be pivoted in by means of a clamping spring and do not stand out when the clamping jaw 24 is opened. In the horizontal movement (opening of the top jaw), they are held by spring elements 33 shown in FIG. 7, which engage in grooves 34 in the clamping jaw 24.
Zum Anheben und Absenken des Verschiebeelements 12 ist dieses über zwei in Figur 4 gezeigte Befestigungsschrauben 35 und zwei innerhalb des Spannbackerikörpers 16 verschiebbar geführte Distanzhülsen 36 mit einem Griffelement 37 verbunden. An der Oberseite des Spannbackenkörpers 16 ist eine Quernut 38 zur Aufnahme des leistenförmigen Griffelements 37 in der abgesenkten Eingriffsstellung vorgesehen. Innerhalb des Spannbackenkörpers 16 ist außerdem eine Hubbegrenzung 39 für das Verschiebeelement 12 angeordnet. Die in den Figuren 3 und 5 gezeigte Festbacke 4 enthält einen mit einer Anschlagfläche 40 versehenen Festbackenkörper 41, der auf den beiden Seitenwangen 2 und 3 aufliegt. An der Unterseite des Festbackenkörpers 41 ist ein Nutenstein 42 mit einer seitlichen Verzahnung 43 zum Eingriff in die Verzahnung 10 an der Innenseite der Seitenwange 2 festgeschraubt. Unterhalb des Nutensteins 42 ist ein Klemmstück 44 angeordnet und wird durch zwei Spannschrauben 45 vertikal beweglich an dem Festbackenkörper 41 gehalten. Das Klemmstück 44 weist ebenfalls obere Schrägflächen zur Anlage an den unteren Schrägflächen der Seitenwangen 2 und 3 auf. Das Führungsspiel 46 ist an der Festbacke 4 derart ausgelegt, daß es kleiner ist als dasjenige der Verstellbacke 5. Im geklemmten Zustand bleibt somit für die Verstellbacke ein erforderliches Grundspiel 47 zur Betätigung der Verschiebeelemente 12. Der Nutenstein 42 der Festbacke ist nicht verschiebbar, da hier eine schnelles Umsetzen normalerweise nicht erforderlich ist. Eine Basisverschiebung, die bei entsprechenden Platzverhältnissen notwendig sein kann, ist aber möglich. Die referenzgenaue Position der Festbacke 4 ist durch den Formschluß mit den Verzahnungen 10 und 43 gegeben. Die Positionen der Festbacke 4 und der Verstellbacke 5 sind über Kanten 48 bzw. 49 ihrer Anschlagflächen auf der Skalierung 14 ablesbar und wiederholt reproduzierbarTo raise and lower the displacement element 12, it is connected to a grip element 37 by means of two fastening screws 35 shown in FIG. 4 and two spacer sleeves 36 guided displaceably within the clamping jaw body 16. On the upper side of the jaw body 16, a transverse groove 38 is provided for receiving the strip-shaped grip element 37 in the lowered engagement position. A stroke limiter 39 for the displacement element 12 is also arranged within the jaw body 16. The fixed jaw 4 shown in FIGS. 3 and 5 contains a fixed jaw body 41 which is provided with a stop surface 40 and which rests on the two side cheeks 2 and 3. On the underside of the fixed jaw body 41, a sliding block 42 is screwed with a side toothing 43 for engagement in the toothing 10 on the inside of the side cheek 2. A clamping piece 44 is arranged below the sliding block 42 and is held on the fixed jaw body 41 in a vertically movable manner by two clamping screws 45. The clamping piece 44 also has upper inclined surfaces for contacting the lower inclined surfaces of the side cheeks 2 and 3. The guide play 46 is designed on the fixed jaw 4 in such a way that it is smaller than that of the adjusting jaw 5. In the clamped state, a necessary basic game 47 remains for the adjusting jaw to actuate the displacement elements 12. The sliding block 42 of the fixed jaw cannot be displaced, since here rapid implementation is usually not required. A basic shift, which may be necessary if there is sufficient space, is possible. The exact position of the fixed jaw 4 is given by the positive connection with the teeth 10 and 43. The positions of the fixed jaw 4 and the adjusting jaw 5 can be read off on edges 48 and 49 of their stop faces on the scale 14 and can be reproduced repeatedly
Bei dem erfindungsgemäßen Mehrfachspanner wird das erste Werkstück an der Anschlagfläche 40 der Festbacke 4 angelegt. Dann wird die in die Längsnut eingeschobene erste Verstellbacke 5 bei angehobenem Griffelement 37 an das Werkstück herangeführt und ca. 1-2 mm vor dem Werkstück positioniert. Daraufhin wird das Griffelement 37 wieder nach unten in die Quernut 38 des Verstellbackenkörpers 16 gedrückt. Dabei wird das Verschiebeelement 12 mit der Verzahnung 11 in die Verzahnung 10 an der inneren Seitenfläche der Seitenwange 2 ein. Die Verzahnungen 10 und 11 sind derart aufeinander abgestimmt, daß das Verschiebeelement 12 bei gelöstem Klemmstück 18 ohne Kraftaufwand verschiebbar ist. Nachdem das Verschiebeelement 12 in die Verzahnung 10 eingerückt wurde, wird die Spannschraube 19 mit einem vorgegebenen Drehmoment angezogen. Dadurch werden die beiden Seitenwangen 2 und 3 nach innen gedrückt und das dazwischen befindliche Verschiebeelement 12 wird spielfrei verspannt. Damit ist auch der Verstellbackenkörper 16 form- und kraftschlüssig fixiert. Durch entsprechendes Festziehen der Spannschraube 25 kann dann der Spannbacken 24 bewegt und das Werkstück gespannt werden. Die gerade Anlagefläche 50 der ersten Verstellbacke 5 bildet gleichzeitig die feste Anschlagfläche für das nächste Werkstück, das durch eine zweite Verstellbacke 5 in entsprechender Weise gespannt werden kann. Wenn dagegen die Spannschraube 19 wieder gelöst wird, kehren die beiden Seitenwangen in ihre Ausgangsstellung zurück und geben das Verschiebeelement 12 zur einfachen Verschiebung frei. In the multiple clamp according to the invention, the first workpiece is placed on the stop surface 40 of the fixed jaw 4. Then the first adjusting jaw 5 inserted into the longitudinal groove is brought up to the workpiece with the grip element 37 raised and positioned approximately 1-2 mm in front of the workpiece. The grip element 37 is then pressed down again into the transverse groove 38 of the adjusting jaw body 16. Here, the sliding element 12 with the toothing 11 into the toothing 10 on the inner side surface of the side cheek 2. The toothings 10 and 11 are matched to one another in such a way that the displacement element 12 can be displaced without any force when the clamping piece 18 is released. After the displacement element 12 has been inserted into the toothing 10, the clamping screw 19 is tightened with a predetermined torque. As a result, the two side cheeks 2 and 3 are pressed inwards and the sliding element 12 located between them is clamped without play. The adjusting jaw body 16 is thus also fixed in a positive and non-positive manner. By appropriately tightening the clamping screw 25, the clamping jaws 24 can then be moved and the workpiece can be clamped. The straight contact surface 50 of the first adjusting jaw 5 simultaneously forms the fixed stop surface for the next workpiece, which is clamped in a corresponding manner by a second adjusting jaw 5 can be. If, on the other hand, the clamping screw 19 is loosened again, the two side cheeks return to their starting position and release the displacement element 12 for simple displacement.

Claims

Ansprüche Expectations
1. Mehrfachspanner zum Spannen von mehreren Werkstücken mit einem Grundkörper (1), mindestens einer am Grundkörper (1) angeordneten Festbacke (4) und mehreren Verstellbacken (5), die zwischen zwei Seitenwangen (2, 3) des Grundkörpers (1) verschiebbar geführt und durch eine mit einer inneren seitlichen Verzahnung (10) an einer Seitenwange (2) in Eingriff bringbare Gegenverzahnung (11) formschlüssig mit dem Grundkörper (1) verbindbar sind, dadurch gekennzeichnet, daß die Gegenverzahnung1. Multiple clamps for clamping several workpieces with a base body (1), at least one fixed jaw (4) arranged on the base body (1) and a plurality of adjustment jaws (5) which are displaceably guided between two side cheeks (2, 3) of the base body (1) and can be positively connected to the base body (1) by means of a counter-toothing (11) which can be brought into engagement with an inner side toothing (10) on a side cheek (2), characterized in that the counter-toothing
(11) an einem zwischen einer angehobenen Lösestellung und einer abgesenkten Eingriffsstellung bewegbaren Verschiebeelement (12) angeordnet ist und daß die Spannbacken (5) jeweils eine Klemmeinrichtung (18, 19) für die gegenseitige Verpannung der beiden Seitenwangen (2, 3) zur Klemmung des Verschiebeelements (12) zwischen den Seitenwagen (2, 3) in der Eingriffsstellung aufweisen.(11) is arranged on a movable between a raised release position and a lowered engagement position displacement element (12) and that the clamping jaws (5) each have a clamping device (18, 19) for the mutual bracing of the two side cheeks (2, 3) for clamping the Have displacement element (12) between the side carriages (2, 3) in the engaged position.
2. Mehrfachspanner nach Anspruch 1, dadurch gekennzeichnet, daß die Klemmeinrichtung aus einem in eine Längsnut (8, 13) zwischen den Seitenwangen (2, 3) eingreifenden und durch eine Sparmeinrichtung (19) verstellbaren Klemmstück (18) mit entgegengesetzten oberen Schrägflächen (20) zur Anlage an entsprechenden unteren Schrägflächen (9) der beiden Seitenwangen (2, 3) besteht.2. Multiple clamp according to claim 1, characterized in that the clamping device from a in a longitudinal groove (8, 13) between the side cheeks (2, 3) engaging and by a saving device (19) adjustable clamping piece (18) with opposite upper inclined surfaces (20 ) for contact with corresponding lower inclined surfaces (9) of the two side cheeks (2, 3).
3. Mehrfachspanner nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Verstellbacken (5) einen mit Hilfe des Verschiebeelements (12) gegenüber dem Grundkörper (1) fixierbaren Verstellbackenkörper (16) und eine demgegenüber verstellbare Spannbacke (24) umfassen.3. Multiple clamp according to claim 1 or 2, characterized in that the adjusting jaws (5) comprise an adjustable jaw body (16) which can be fixed with the aid of the displacement element (12) relative to the base body (1) and an adjustable clamping jaw (24).
4. Mehrfachspanner nach Anspruch 3, dadurch gekennzeichnet, daß an der zur Spannbacke (24) entgegengesetzten Seite des Verstellbackenkörpers (16) eine Anlagefläche (50) vorgesehen ist.4. Multiple clamp according to claim 3, characterized in that a contact surface (50) is provided on the opposite side of the adjusting jaw body (16) to the clamping jaw (24).
5. Mehrfachspanner nach Anspruch 3 oder 4, dadurch gekennzeichnet, daß das Verschiebeelement (12) mit einem an der Oberseite des Verstellbackenkörpers (16) angeordneten Griffelement (37) verbunden ist. 5. Multiple clamp according to claim 3 or 4, characterized in that the displacement element (12) with a on the top of the adjusting jaw body (16) arranged handle element (37) is connected.
6. Mehrfachspanner nach Anspruch 5, dadurch gekennzeichnet, daß der6. Multiple clamp according to claim 5, characterized in that the
Verstellbackenkörper (16) eine Aussparung (38) zur Aufnahme des Griffelements (37) aufweist.Adjusting jaw body (16) has a recess (38) for receiving the handle element (37).
7. Mehrfachspanner nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, daß das Verschiebeelement (12) über zwei innerhalb des Verstellbackenkörpers (16) verschiebbare Distanzhülsen (36) und Befestigungsschrauben (35) mit dem Griffelement (37) verbunden ist.7. Multiple clamp according to one of claims 4 to 6, characterized in that the displacement element (12) via two within the adjusting jaw body (16) displaceable spacer sleeves (36) and fastening screws (35) is connected to the handle element (37).
8. Mehrfachspanner nach einem der Ansprüche 3 bis 7, dadurch gekennzeichnet, daß an der verstellbaren Spannbacke (24) eine Aufsatzbacke (30) montierbar ist.8. Multiple clamp according to one of claims 3 to 7, characterized in that a top jaw (30) can be mounted on the adjustable clamping jaw (24).
9. Mehrfachspanner nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die9. Multiple clamp according to one of claims 1 to 8, characterized in that the
Festbacke (4) einen Nutenstein (42) mit einer seitlichen Verzahnung (43) zum Eingriff in die Verzahnung (10) an der Seitenwange (2) und ein verstellbares Klemmstück (44) für die gegenseitige Verspannung der beiden Seitenwangen (2, 3) enthält.Fixed jaw (4) contains a sliding block (42) with a side toothing (43) for engagement in the toothing (10) on the side cheek (2) and an adjustable clamping piece (44) for the mutual bracing of the two side cheeks (2, 3) ,
10. Melirfachspanner nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß der Grundkörper (1) aus einer oder mehreren Basisschienen (7) und zwei mit dieser bzw. diesen verschraubten schienenfömigen Seitenwangen (2, 3) besteht. 10. Melirfachspanner according to one of claims 1 to 9, characterized in that the base body (1) consists of one or more base rails (7) and two with this or these rail-shaped side cheeks (2, 3) screwed.
EP03815368A 2003-01-22 2003-12-06 Multiple clamping device Expired - Lifetime EP1622746B1 (en)

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DE10302255A DE10302255A1 (en) 2003-01-22 2003-01-22 Multiple fixture
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ATE363965T1 (en) 2007-06-15

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