EP0325738A2 - Clamping device - Google Patents

Clamping device Download PDF

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Publication number
EP0325738A2
EP0325738A2 EP88120225A EP88120225A EP0325738A2 EP 0325738 A2 EP0325738 A2 EP 0325738A2 EP 88120225 A EP88120225 A EP 88120225A EP 88120225 A EP88120225 A EP 88120225A EP 0325738 A2 EP0325738 A2 EP 0325738A2
Authority
EP
European Patent Office
Prior art keywords
clamping
abutment plate
bolt
screw
claw according
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
EP88120225A
Other languages
German (de)
French (fr)
Other versions
EP0325738B1 (en
EP0325738A3 (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
Priority to AT88120225T priority Critical patent/ATE75981T1/en
Publication of EP0325738A2 publication Critical patent/EP0325738A2/en
Publication of EP0325738A3 publication Critical patent/EP0325738A3/en
Application granted granted Critical
Publication of EP0325738B1 publication Critical patent/EP0325738B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/10—Arrangements for positively actuating jaws using screws
    • B25B5/104—Arrangements for positively actuating jaws using screws with one screw and one clamping lever and one fulcrum element
    • B25B5/106—Arrangements for positively actuating jaws using screws with one screw and one clamping lever and one fulcrum element with one end of the lever resting on an additional block and the screw being positioned between the ends of the lever
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/10—Arrangements for positively actuating jaws using screws
    • B25B5/104—Arrangements for positively actuating jaws using screws with one screw and one clamping lever and one fulcrum element
    • B25B5/106—Arrangements for positively actuating jaws using screws with one screw and one clamping lever and one fulcrum element with one end of the lever resting on an additional block and the screw being positioned between the ends of the lever
    • B25B5/107—Blocks therefor

Definitions

  • the invention relates to a clamping claw for clamping objects, in particular vices on machine tables, with an essentially rectangular, flat clamping lug, which has a longitudinal slot extending in its longitudinal direction for the passage of a clamping screw which can be anchored in a T-slot of the machine table, and with one with the tensioning plate by means of a bolt which extends at right angles to its plane and which protrudes with respect to the underside of the tensioning plate and which can be rotated relative to the axis of the bolt.
  • a known clamping claw of this type (DE-GM 73 15 457) the bolt is designed as a screw which can be screwed into a threaded hole in the clamping lug.
  • the distance between the abutment plate, which is rotatably arranged at the lower end of the bolt, and the clamping lug can be changed and the clamping claw can thus be adapted to the thickness of the objects to be clamped.
  • fixing clamping devices such as vices on drilling machine tables poses particular problems because neither the size of these drilling machine tables nor the arrangement of the T-slots is standardized.
  • the machine vices also have a wide variety of dimensions.
  • the machine vices have to be clamped in a wide variety of positions depending on the workpiece and the drilling spindle on the drilling machine table, whereby additional problems may arise due to the small size of the drilling machine tables.
  • the known clamping claws it is therefore often not possible to securely clamp the machine vice in the desired position on the drilling machine table.
  • the invention is therefore based on the object of providing a clamping claw for clamping objects, in particular vices, on machine tables of the type mentioned at the outset, which makes it possible to securely clamp vices in any desired position on a wide variety of machine tables and is inexpensive to manufacture.
  • abutment plate is arranged eccentrically to the bolt axis and in that the bolt is displaceable in a longitudinal slot of the clamping bracket.
  • the clamping claw 1 has a clamping tab 2, which is essentially rectangular and flat.
  • the tensioning tab 2 is provided with a longitudinal slot 3 extending in its longitudinal direction and has bevels 4 at one end.
  • the tensioning tab 2 can advantageously be punched out of sheet metal or flat steel, the longitudinal slot 3 and the bevels 4 also being punched out at the same time.
  • An abutment plate 5 is provided on the underside 2a of the tensioning tab 2, which plate is expediently designed as a cylindrical disk.
  • the lower side of the tensioning tab 2 is supported on the upper side 5a of the abutment plate 5.
  • the abutment plate 5 is movably connected to the clamping bracket 2 via the bolt 6.
  • the abutment plate 5 is eccentric to the Bolt axis A arranged.
  • the bolt 6 itself is expediently designed as a knurled screw, the knurled head 6a of which protrudes above the upper side 2b of the tensioning tab 2.
  • the bolt 6 is also displaceable in the longitudinal slot 3 of the clamping tab 2.
  • This longitudinal slot 3 also serves for the passage of a clamping screw 7 which can be screwed into a sliding block 8.
  • the sliding block 8 can be inserted into one of the T-slots 9 of a machine table, in particular a drilling machine table M.
  • the head of the tensioning screw 7 is supported with the interposition of a washer 10 on the top 2b of the tensioning tab 2.
  • the abutment plate 5 which is arranged eccentrically with respect to the pin axis A, can be moved by means of the pin 6 or the knurled screw both in the direction B of the longitudinal slot 3 and also pivotable about the pin axis A in the direction C.
  • the abutment plate 5 can be moved and pivoted by means of the knurled head 6a, the eccentric position of the abutment plate 5 being expediently indicated by a marking 11 provided on the head 6a.
  • a vice S to be clamped on the machine table M has a clamping bar 12 on each of its two longitudinal sides.
  • One end of the clamping tab 2 is brought into contact with the clamping surface 12a of this clamping bar 12, as shown in FIGS. 2 and 3.
  • By moving the abutment plate 5 in the direction B and pivoting the same in the direction C it can be brought into a suitable position in which it is supported on the surface of the machine table M or the edge thereof.
  • the abutment plate 5 and clamping screw 7 can also be brought into the position shown in broken lines in FIG. 3. If necessary, it is also possible to interchange the position of the clamping screw 7 and the abutment plate 5. The exchange of abutment plate 5 and clamping screw 7 makes it possible to bring the clamping screw even closer to the vice.
  • the longitudinal slot 3 can namely extend at the end 2c of the tensioning tab facing away from the bevels 4 up to the vicinity of this end, since the cross section of the tensioning tab at this end 2c is not weakened by bevels.
  • the clamping tab 2 can also be attached obliquely to a vice S or its clamping strip 12. Again, the abutment plate 5 can be brought into a favorable position by pivoting and moving.
  • Figure 5 shows a position of the clamping tab 2, in which it is arranged with its long side parallel to the clamping bar 12.
  • the height H of the abutment plate 5 should correspond to the height h of the clamping bar 12 of the vice S. If a vice has a clamping bar with a different height h, the abutment plate 5 can optionally also be exchanged for one with a different height.
  • a vice S1 is to be clamped with an internal groove 13 and this internal groove is removed from the surface of the machine table M has a smaller distance h1, then one can also turn the clamping tab 2 so that its top 2b comes to lie down.
  • the knurled head 6a which has a smaller height H1 than the height H of the abutment plate 5, forms the abutment.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

A clamping device (1) for clamping vices (S) to machine tables (M) has an essentially rectangular, flat clamping strap (2) with an elongated slot (3) extending in its longitudinal direction for a clamping screw (7) to pass through. The clamping screw (7) can be anchored in a T-slot (9) of the machine table (M). An abutment plate (5) is eccentrically arranged on a bolt (6), displaceable in the elongated slot (3), and is pivotable about the bolt axis (A). The underside (2a) of the clamping strap is supported on the abutment plate (5). <IMAGE>

Description

Die Erfindung betrifft eine Spannpratze zum Aufspannen von Gegenständen, insbesondere von Schraubstöcken auf Maschinen­tischen, mit einer im wesentlichen rechteckigen, ebenen Spannlasche, die einen sich in ihrer Längsrichtung er­streckenden Längsschlitz zum Durchtritt einer in einer T-Nut des Maschinentisches verankerbaren Spannschraube aufweist, und mit einer mit der Spannlasche mittels eines sich rechtwinklig zu deren Ebene erstreckenden Bolzens ver­bundenen, gegenüber der Spannlaschenunterseite vorstehenden und dieser gegenüber um die Achse des Bolzens verdrehbaren Widerlagerplatte.The invention relates to a clamping claw for clamping objects, in particular vices on machine tables, with an essentially rectangular, flat clamping lug, which has a longitudinal slot extending in its longitudinal direction for the passage of a clamping screw which can be anchored in a T-slot of the machine table, and with one with the tensioning plate by means of a bolt which extends at right angles to its plane and which protrudes with respect to the underside of the tensioning plate and which can be rotated relative to the axis of the bolt.

Bei einer bekannten Spannpratze dieser Art (DE-GM 73 15 457) ist der Bolzen als Schraube ausgebildet, die in einer Ge­windebohrung der Spannlasche verschraubbar ist. Auf diese Weise kann der Abstand zwischen der am unteren Ende des Bolzens drehbar angeordneten Widerlagerplatte und der Spann­lasche verändert und damit die Spannpratze der Dicke der aufzuspannenden Gegenstände angepaßt werden. Besondere Probleme bereitet jedoch das Befestigen von Spannmitteln, wie z.B. Schraubstöcken auf Bohrmaschinentischen, weil weder die Größe dieser Bohrmaschinentische noch die Anord­nung der T-Nuten genormt ist. Außerdem haben auch die Maschinenschraubstöcke die unterschiedlichsten Abmessungen. Hinzu kommt noch, daß die Maschinenschraubstöcke in den verschiedensten Stellungen in Abhängigkeit von dem Werk­stück und der Bohrspindel auf dem Bohrmaschinentisch auf­gespannt werden müssen, wobei sich wegen der geringen Größe der Bohrmaschinentische noch zusätzliche Probleme ergeben können. Mit den bekannten Spannpratzen ist es des­halb vielfach nicht möglich, den Maschinenschraubstock in der gewünschten Stellung auf dem Bohrmaschinentisch sicher festzuspannen.In a known clamping claw of this type (DE-GM 73 15 457) the bolt is designed as a screw which can be screwed into a threaded hole in the clamping lug. In this way, the distance between the abutment plate, which is rotatably arranged at the lower end of the bolt, and the clamping lug can be changed and the clamping claw can thus be adapted to the thickness of the objects to be clamped. However, fixing clamping devices such as vices on drilling machine tables poses particular problems because neither the size of these drilling machine tables nor the arrangement of the T-slots is standardized. The machine vices also have a wide variety of dimensions. In addition, the machine vices have to be clamped in a wide variety of positions depending on the workpiece and the drilling spindle on the drilling machine table, whereby additional problems may arise due to the small size of the drilling machine tables. With the known clamping claws it is therefore often not possible to securely clamp the machine vice in the desired position on the drilling machine table.

Der Erfindung liegt deshalb die Aufgabe zugrunde, eine Spannpratze zum Aufspannen von Gegenständen, insbesondere von Schraubstöcken, auf Maschinentischen der eingangs er­wähnten Art zu schaffen, die ein sicheres Aufspannen von Schraubstöcken in jeder gewünschten Lage auf den unter­schiedlichsten Maschinentischen ermöglicht und dabei preisgünstig herstellbar ist.The invention is therefore based on the object of providing a clamping claw for clamping objects, in particular vices, on machine tables of the type mentioned at the outset, which makes it possible to securely clamp vices in any desired position on a wide variety of machine tables and is inexpensive to manufacture.

Dies wird nach der Erfindung dadurch erreicht, daß die Widerlagerplatte exzentrisch zu der Bolzenachse angeordnet ist und daß der Bolzen in einem Längsschlitz der Spann­lasche verschiebbar ist.This is achieved according to the invention in that the abutment plate is arranged eccentrically to the bolt axis and in that the bolt is displaceable in a longitudinal slot of the clamping bracket.

Durch die Verschiebbarkeit und Schwenkbarkeit der exzen­trisch gegenüber der Bolzenachse angeordneten Wider­lagerplatte bei gleichzeitiger Verschiebbarkeit der Spann­schraube gegenüber der Spannlasche, kann diese in den unterschiedlichsten Winkelstellungen gegenüber einem auf­zuspannenden Gegenstand, insbesondere gegenüber einem Schraubstock, angesetzt werden. Die Verschiebbarkeit und die Verschwenkbarkeit der exzentrisch angeordneten Wider­lagerplatte spielt dabei eine wichtige Rolle, denn man kann auf diese Weise die Widerlagerplatte immer in eine Stellung bringen, in der sie in bezug auf die Spannschrau­be der Spannfläche am Schraubstock mehr oder weniger gegenüberliegend angeordnet ist. Es lassen sich damit Schraubstöcke auf Bohrmaschinentischen in jeder beliebigen Stellung sicher aufspannen. Da die Spannpratze aus wenigen einfach herzustellenden Teilen besteht, ist auch eine preisgünstige Herstellung gewährleistet.As a result of the displaceability and pivotability of the abutment plate arranged eccentrically with respect to the pin axis and at the same time displaceability of the tensioning screw with respect to the tensioning lug, this can be applied in the most varied of angular positions with respect to an object to be clamped, in particular with respect to a vice. The displaceability and the pivotability of the eccentrically arranged abutment plate plays an important role, because in this way you can always bring the abutment plate into a position in which it is arranged more or less opposite with respect to the clamping screw of the clamping surface on the vice. It can be used to securely clamp vices on drilling machine tables in any position. Since the clamping claw consists of a few easy-to-manufacture parts, inexpensive manufacture is also guaranteed.

Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen gekennzeichnet.Advantageous embodiments of the invention are characterized in the subclaims.

Die Erfindung ist in folgendem, anhand eines in der Zeich­nung dargestellten Ausführungsbeispieles näher erläutert. Es zeigen:

  • Figur 1 eine Draufsicht auf die Spannpratze,
  • Figur 2 einen Längsschnitt der Spannpratze nach der Linie II-II der Figur 3 in Verbindung mit einem Maschinen­schraubstock und einem Maschinentisch nach der Linie II-II der Figur 3,
  • Figur 3 eine Draufsicht auf eine Spannpratze sowie einen Teil des Maschinenschraubstockes und des Maschinen­tisches,
  • Figur 4 und 5 Draufsichten auf verschiedene weitere Aufspannmög­lichkeiten,
  • Figur 6 eine Seitenansicht einer weiteren Aufspannung.
The invention is explained in more detail below with reference to an embodiment shown in the drawing. Show it:
  • FIG. 1 shows a top view of the clamping claw,
  • 2 shows a longitudinal section of the clamping claw along the line II-II of FIG. 3 in connection with a machine vice and a machine table along the line II-II of FIG. 3,
  • FIG. 3 shows a top view of a clamping claw and part of the machine vice and the machine table,
  • FIGS. 4 and 5 are top views of various other clamping options,
  • Figure 6 is a side view of a further clamping.

Die Spannpratze 1 weist eine Spannlasche 2 auf, welche im wesentlichen rechteckig und eben ausgebildet ist. Die Spann­lasche 2 ist mit einem sich in ihrer Längsrichtung er­streckenden Längsschlitz 3 versehen und weist an ihrem einen Ende Abschrägungen 4 auf. Die Spannlasche 2 kann vorteilhaft aus Blech oder Flachstahl gestanzt werden, wobei gleichzeitig auch der Längschlitz 3 und die Ab­schrägungen 4 gestanzt werden können.The clamping claw 1 has a clamping tab 2, which is essentially rectangular and flat. The tensioning tab 2 is provided with a longitudinal slot 3 extending in its longitudinal direction and has bevels 4 at one end. The tensioning tab 2 can advantageously be punched out of sheet metal or flat steel, the longitudinal slot 3 and the bevels 4 also being punched out at the same time.

An der Unterseite 2a der Spannlasche 2 ist eine Wider­lagerplatte 5 vorgesehen, die zweckmäßig als zylindrische Scheibe ausgebildet ist. Die Spannlasche 2 stützt sich mit ihrer Unterseite 2a auf der Oberseite 5a der Widerla­gerplatte 5 ab. Die Widerlagerscheibe 5 ist über den Bolzen 6 mit der Spannlasche 2 beweglich verbunden. Die Widerlagerplatte 5 ist dabei exzentrisch zu der Bolzenachse A angeordnet. Der Bolzen 6 selbst ist zweckmäßig als Rändelschraube ausgebildet, wobei deren gerändelter Kopf 6a über die Oberseite 2b der Spannlasche 2 vorsteht. Der Bolzen 6 ist ferner in dem Längsschlitz 3 der Spannlasche 2 verschiebbar. Dieser Längsschlitz 3 dient auch zum Durchtritt einer Spannschraube 7, die in einem Nutenstein 8 verschraubbar ist. Der Nutenstein 8 ist in eine der T-Nuten 9 eines Maschinentisches, insbe­sondere eines Bohrmaschinentisches M, einsetzbar. Der Kopf der Spannschraube 7 stützt sich unter Zwischenschal­tung einer Beilagscheibe 10 an der Oberseite 2b der Spann­lasche 2 ab.An abutment plate 5 is provided on the underside 2a of the tensioning tab 2, which plate is expediently designed as a cylindrical disk. The lower side of the tensioning tab 2 is supported on the upper side 5a of the abutment plate 5. The abutment plate 5 is movably connected to the clamping bracket 2 via the bolt 6. The abutment plate 5 is eccentric to the Bolt axis A arranged. The bolt 6 itself is expediently designed as a knurled screw, the knurled head 6a of which protrudes above the upper side 2b of the tensioning tab 2. The bolt 6 is also displaceable in the longitudinal slot 3 of the clamping tab 2. This longitudinal slot 3 also serves for the passage of a clamping screw 7 which can be screwed into a sliding block 8. The sliding block 8 can be inserted into one of the T-slots 9 of a machine table, in particular a drilling machine table M. The head of the tensioning screw 7 is supported with the interposition of a washer 10 on the top 2b of the tensioning tab 2.

Die gegenüber der Bolzenachse A exzentrisch angeord­nete Widerlagerplatte 5 ist mittels des Bolzens 6 bzw. der Rändelschraube sowohl in Richtung B des Längs­schlitzes 3 verschiebbar als auch um die Bolzenachse A in Richtung C schwenkbar. Das Verschieben und Verschwenken der Widerlagerplatte 5 kann mittels des gerändelten Kopfes 6a erfolgen, wobei die Exzenterlage der Widerlagerplatte 5 zweckmäßig durch eine am Kopf 6a vorgesehene Markierung 11 angezeigt wird.The abutment plate 5, which is arranged eccentrically with respect to the pin axis A, can be moved by means of the pin 6 or the knurled screw both in the direction B of the longitudinal slot 3 and also pivotable about the pin axis A in the direction C. The abutment plate 5 can be moved and pivoted by means of the knurled head 6a, the eccentric position of the abutment plate 5 being expediently indicated by a marking 11 provided on the head 6a.

Ein auf dem Maschinentisch M aufzuspannender Schraubstock S weist an seinen beiden Längsseiten je eine Aufspannleiste 12 auf. Das eine Ende der Spannlasche 2 wird auf der Spann­fläche 12a dieser Aufspannleiste 12 zur Anlage gebracht, wie es in Figur 2 und 3 dargestellt ist. Durch Verschieben der Widerlagerplatte 5 in Richtung B sowie Verschwenken derselben in Richtung C kann man diese in eine geeignete Stellung bringen, in welcher sie sich auf der Oberfläche des Maschinentisches M oder dem Rand desselben abstützt. Hierbei kann man durch Verschiebung und Verschwenkung der Widerlagerplatte 5 erreichen, daß der Mittelpunkt 0 der Widerlagerplatte 5, die Achse A1 der Spannschraube und der Bereich, mit dem sich die Spannlasche auf der Aufspann­fläche 12a der Spannleiste 12 abstützt, möglichst mitein­ander fluchten. Auch kann man die Verschiebung von Wider­lagerplatte 5 und Spannschraube 7 dazu ausnützen, um mög­lichst günstige Hebelverhältnisse zu erreichen. Sofern die T-Nut 9 in der Nähe des Randes des Maschinentisches angeord­net ist, kann die Widerlagerplatte auch in die in Figur 3 strichpunktiert dargestellte Lage gebracht werden. Erforder­lichenfalls ist es auch möglich, die Lage der Spannschraube 7 und der Widerlagerplatte 5 gegeneinander zu vertauschen. Die Vertauschung von Widerlagerplatte 5 und Spannschraube 7 ermöglicht es, die Spannschraube noch dichter an den Schraub­stock heranzubringen. Der Längsschlitz 3 kann sich nämlich an dem den Abschrägungen 4 abgekehrten Ende 2c der Spann­lasche bis in die Nähe dieses Endes erstrecken, da der Querschnitt der Spannlasche an diesem Ende 2c nicht durch Abschrägungen geschwächt ist.A vice S to be clamped on the machine table M has a clamping bar 12 on each of its two longitudinal sides. One end of the clamping tab 2 is brought into contact with the clamping surface 12a of this clamping bar 12, as shown in FIGS. 2 and 3. By moving the abutment plate 5 in the direction B and pivoting the same in the direction C, it can be brought into a suitable position in which it is supported on the surface of the machine table M or the edge thereof. Here you can achieve by moving and pivoting the abutment plate 5 that the center 0 of the Abutment plate 5, the axis A1 of the clamping screw and the area with which the clamping bracket is supported on the clamping surface 12a of the clamping bar 12 are as flush as possible. You can also use the displacement of the abutment plate 5 and clamping screw 7 to achieve the best possible leverage. If the T-slot 9 is arranged near the edge of the machine table, the abutment plate can also be brought into the position shown in broken lines in FIG. 3. If necessary, it is also possible to interchange the position of the clamping screw 7 and the abutment plate 5. The exchange of abutment plate 5 and clamping screw 7 makes it possible to bring the clamping screw even closer to the vice. The longitudinal slot 3 can namely extend at the end 2c of the tensioning tab facing away from the bevels 4 up to the vicinity of this end, since the cross section of the tensioning tab at this end 2c is not weakened by bevels.

Aus der Figur 4 ist zu entnehmen, daß die Spannlasche 2 auch schräg zu einem Schraubstock S bzw. dessen Spannleiste 12 angesetzt werden kann. Auch hier kann die Widerlager­platte 5 durch Schwenken und Verschieben in eine günstige Position gebracht werden.It can be seen from FIG. 4 that the clamping tab 2 can also be attached obliquely to a vice S or its clamping strip 12. Again, the abutment plate 5 can be brought into a favorable position by pivoting and moving.

Figur 5 zeigt eine Stellung der Spannlasche 2, in welcher diese mit ihrer Längsseite parallel zur Spannleiste 12 an­geordnet ist.Figure 5 shows a position of the clamping tab 2, in which it is arranged with its long side parallel to the clamping bar 12.

Die Höhe H der Widerlagerplatte 5 sollte der Höhe h der Aufspannleiste 12 des Schraubstockes S entsprechen. Wenn ein Schraubstock eine Aufspannleiste mit anderer Höhe h aufweist, kann man gegebenenfalls auch die Widerlagerplatte 5 gegen eine solche mit anderer Höhe austauschen.The height H of the abutment plate 5 should correspond to the height h of the clamping bar 12 of the vice S. If a vice has a clamping bar with a different height h, the abutment plate 5 can optionally also be exchanged for one with a different height.

Wenn gemäß Figur 6 ein Schraubstock S1 mit einer innen liegenden Nut 13 aufgespannt werden soll und diese innen liegende Nut von der Oberfläche des Maschinentisches M einen kleineren Abstand h1 aufweist, dann kann man die Spannlasche 2 auch umdrehen, so daß ihre Oberseite 2b nach unten zu liegen kommt. In diesem Fall bildet dann der ge­rändelte Kopf 6a, der eine kleinere Höhe H1 aufweist als die Höhe H der Widerlagerplatte 5, das Widerlager.If, according to FIG. 6, a vice S1 is to be clamped with an internal groove 13 and this internal groove is removed from the surface of the machine table M has a smaller distance h1, then one can also turn the clamping tab 2 so that its top 2b comes to lie down. In this case, the knurled head 6a, which has a smaller height H1 than the height H of the abutment plate 5, forms the abutment.

Es gibt noch weitere Aufspannmöglichkeiten, in welchen sich die neue Spannpratze einsetzen läßt. Es würde jedoch zu weit führen, diese zahlreichen Aufspannmöglichkeiten alle im Detail zu erläutern.There are other clamping options in which the new clamping claw can be used. However, it would go too far to explain all of these numerous clamping options in detail.

Claims (7)

1. Spannpratze zum Aufspannen von Gegenständen, insbesondere van Schraubstöcken, auf Maschinentischen, mit einer im wesentlichen rechteckigen, ebenen Spannlasche, die einen sich in ihrer Längsrichtung erstreckenden Längsschlitz zum Durchtritt einer in einer T-Nut des Maschinentisches verankerbaren Spannschraube aufweist, und mit einer mit der Spannlasche mittels eines sich rechtwinklig zu deren Ebene erstreckenden Bolzens verbundenen, gegenüber der Spann­laschenunterseite vorstehenden und dieser gegenüber um die Achse des Bolzens verdrehbaren Widerlagerplatte, da­durch gekennzeichnet, daß die Widerlagerplatte (5) exzen­trisch zu der Bolzenachse (A) angeordnet ist und daß der Bolzen (6) in einem Längsschlitz (3) der Spannlasche (2) verschiebbar ist.1. Clamping claw for clamping objects, in particular van vices, on machine tables, with an essentially rectangular, flat clamping lug, which has a longitudinal slot extending in its longitudinal direction for the passage of a clamping screw that can be anchored in a T-slot of the machine table, and with one the clamping bracket by means of a bolt which extends at right angles to its plane and which protrudes with respect to the underside of the clamping bracket and which can be rotated about the axis of the bolt, characterized in that the abutment plate (5) is arranged eccentrically to the bolt axis (A) and that the bolt (6) in a longitudinal slot (3) of the clamping tab (2) is displaceable. 2. Spannpratze nach Anspruch 1, dadurch gekennzeichnet, daß sich die Spannlasche (2) mit ihrer Unterseite (2a) auf der Oberseite (5a) der Widerlagerplatte (5) abstützt.2. Clamping claw according to claim 1, characterized in that the clamping bracket (2) is supported with its underside (2a) on the upper side (5a) of the abutment plate (5). 3. Spannpratze nach Anspruch 1 oder 2, dadurch gekennzeich­net, daß der Bolzen (6) in dem gleichen Längsschlitz (3) verschiebbar ist, durch den auch die Spannschraube (7) hindurchtritt.3. Clamping claw according to claim 1 or 2, characterized in that the bolt (6) is displaceable in the same longitudinal slot (3) through which the clamping screw (7) also passes. 4. Spannpratze nach Anspruch 1 oder 2, dadurch gekennzeich­net, daß die Widerlagerplatte (5) als zylindrische Schei­be ausgebildet ist.4. Clamping claw according to claim 1 or 2, characterized in that the abutment plate (5) is designed as a cylindrical disk. 5. Spannpratze nach Anspruch 1, dadurch gekennzeichnet, daß der Bolzen (6) durch den Schaft einer Rändelschraube ge­bildet ist, deren gerändelter Kopf (6a) über die Ober­seite (2b) der Spannlasche (2) vorsteht.5. Clamping claw according to claim 1, characterized in that the bolt (6) is formed by the shaft of a knurled screw, whose knurled head (6a) protrudes over the top (2b) of the clamping tab (2). 6. Spannpratze nach Anspruch 1 oder 4, dadurch gekennzeich­net, daß die Höhe (H) der Widerlagerplatte (5) der Höhe (h) von Aufspannleisten (12) an Schraubstöcken (S) ent­spricht.6. Clamping claw according to claim 1 or 4, characterized in that the height (H) of the abutment plate (5) corresponds to the height (h) of clamping bars (12) on vices (S). 7. Spannpratze nach Anspruch 5 oder 6, dadurch gekennzeich­net, daß der gerändelte Kopf (6a) eine geringere Höhe (H1) aufweist als die Widerlagerplatte (5).7. Clamping claw according to claim 5 or 6, characterized in that the knurled head (6a) has a lower height (H1) than the abutment plate (5).
EP88120225A 1988-01-26 1988-12-03 Clamping device Expired - Lifetime EP0325738B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88120225T ATE75981T1 (en) 1988-01-26 1988-12-03 CLAMP.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3802091A DE3802091C1 (en) 1988-01-26 1988-01-26
DE3802091 1988-01-26

Publications (3)

Publication Number Publication Date
EP0325738A2 true EP0325738A2 (en) 1989-08-02
EP0325738A3 EP0325738A3 (en) 1990-03-07
EP0325738B1 EP0325738B1 (en) 1992-05-13

Family

ID=6345932

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88120225A Expired - Lifetime EP0325738B1 (en) 1988-01-26 1988-12-03 Clamping device

Country Status (4)

Country Link
EP (1) EP0325738B1 (en)
JP (1) JPH01222834A (en)
AT (1) ATE75981T1 (en)
DE (1) DE3802091C1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997043094A1 (en) * 1996-05-13 1997-11-20 Foerster Rainer Work bench for assembly of workpieces
CN103921232A (en) * 2014-05-06 2014-07-16 安徽工程大学 Clamping device

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102626732B (en) * 2012-04-28 2014-01-29 苏州市达圣机械有限公司 Lateral thrust clamping device of aluminum strip
CN102922497B (en) * 2012-10-09 2015-08-26 中船澄西船舶修造有限公司 Subsidiary engine connecting rod mechanic station
CN108127439A (en) * 2017-12-22 2018-06-08 合肥仨力机械制造有限公司 A kind of fork truck part punching device
CN110666710A (en) * 2019-09-25 2020-01-10 温州市强达表业有限公司 Wire drawing polisher for watch straps

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1189676A (en) * 1958-01-10 1959-10-06 Const Mecaniques Soc Et Fixing device on slotted machine tool tables
FR1375736A (en) * 1963-05-21 1964-10-23 Feinmechanik G M B H Fixing or mounting device
DE7315457U (en) * 1973-04-24 1973-10-18 Duevel W Device for clamping workpieces
US3850421A (en) * 1973-04-23 1974-11-26 R Orris Clamp apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1189676A (en) * 1958-01-10 1959-10-06 Const Mecaniques Soc Et Fixing device on slotted machine tool tables
FR1375736A (en) * 1963-05-21 1964-10-23 Feinmechanik G M B H Fixing or mounting device
US3850421A (en) * 1973-04-23 1974-11-26 R Orris Clamp apparatus
DE7315457U (en) * 1973-04-24 1973-10-18 Duevel W Device for clamping workpieces

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
TOOLING & PRODUCTION, Band. 30, Nr. 12, M{rz 1965, Seite 74, Solon, US; E.J. GOULET: "Double action clamp" *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997043094A1 (en) * 1996-05-13 1997-11-20 Foerster Rainer Work bench for assembly of workpieces
CN103921232A (en) * 2014-05-06 2014-07-16 安徽工程大学 Clamping device

Also Published As

Publication number Publication date
ATE75981T1 (en) 1992-05-15
EP0325738B1 (en) 1992-05-13
DE3802091C1 (en) 1988-11-03
EP0325738A3 (en) 1990-03-07
JPH01222834A (en) 1989-09-06

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