EP1046468B1 - Clamping device for clamping workpieces - Google Patents

Clamping device for clamping workpieces Download PDF

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Publication number
EP1046468B1
EP1046468B1 EP00107619A EP00107619A EP1046468B1 EP 1046468 B1 EP1046468 B1 EP 1046468B1 EP 00107619 A EP00107619 A EP 00107619A EP 00107619 A EP00107619 A EP 00107619A EP 1046468 B1 EP1046468 B1 EP 1046468B1
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EP
European Patent Office
Prior art keywords
clamping
piston
keyway
wedge
clamping device
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 - Lifetime
Application number
EP00107619A
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German (de)
French (fr)
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EP1046468A3 (en
EP1046468A2 (en
Inventor
David Fischer
Rudolf Kohlert
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A Roemheld GmbH and Co KG
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A Roemheld GmbH and Co KG
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Publication of EP1046468A2 publication Critical patent/EP1046468A2/en
Publication of EP1046468A3 publication Critical patent/EP1046468A3/en
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Publication of EP1046468B1 publication Critical patent/EP1046468B1/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
    • B25B5/061—Arrangements for positively actuating jaws with fluid drive
    • 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
    • B25B5/08—Arrangements for positively actuating jaws using cams
    • B25B5/087—Arrangements for positively actuating jaws using cams actuated by a hydraulic or pneumatic piston

Definitions

  • the invention relates to a Clamping device for clamping of Workpieces on tables, devices or pallets, according to the preamble of claim 1.
  • fixtures or pallets When clamping workpieces on tables, fixtures or pallets must be sure that the workpieces in the tensioned state so are fixed that during the period of processing on them acting forces do not reduce the clamping force.
  • the clamping technology is changing to smaller, highly effective clamping elements in to use crowded construction. It is thus an object of the invention once to integrate the two hydraulic systems in one system and the other Make elements of this hydraulic system so that the clamping bolt is self-locking set in its working position without settling.
  • the advantage is a compact design that easily accommodates all circumstances can adjust the clamping technology.
  • a bore 3 is introduced in the housing 1, in which the Clamping bolt 2 is slidably guided. Transverse to the direction of movement of Clamping bolt 2 is a blind bore 4 is provided in the housing 1, the Cylinder for the holding piston 5 forms.
  • This holding piston 5 is a double acting piston, between the two piston surfaces 6,7, the piston rod is provided with a wedge surface 8.
  • This wedge surface 8 forms an in Clamping slope sloping slope.
  • this wedge surface 8 is a keyway. 9 admitted.
  • This keyway 9 extends parallel to the wedge surface 8 with const. Depth. In its lower area, where the two flanks of the keyway 9 in an acute Angle to run on each other is a bore 10 along the keyway. 9 introduced so that between Keilnutground and bore an open gap 11th arises.
  • the two flanks of the keyway 9 form with the open bore a guideway.
  • This guideway is in such an area on the holding piston. 5 guided that the clamping operation is executable.
  • the holding piston 5 is through Actuation of the pressure chamber 12 is moved to its clamping position and by acting on the pressure chamber 13 in its starting position scaled back.
  • the clamping bolt 2 is in its lower part to the holding piston out with Wedge surfaces 14 provided whose slope exactly the slope of the keyway. 9 is adapted.
  • the wedge surfaces 14 are not pointed, but end in a cam 15.
  • This cam 15 corresponds in diameter the inner diameter of the bore 10.
  • the cam 15 is in the lower part flattened so that its cross-section does not quite correspond to the semicircle.
  • the Clamping pin 2 thus forms in the lower part of the wedge surfaces 14 and the cam 15 formed wedge-shaped guide piece. This guide piece is inserted into the guideway and slides in it in the formed crooked Level.
  • the holding piston 5 is in its lower region with a flat 16th Mistake.
  • This flattening 16 is open to the pressure chamber 13.
  • To the Pressure chamber 12 towards it ends just before the seal 17th two piston rings 18, 19.
  • the Diameter of these piston rings 18,19 is slightly smaller than that Diameter of the holding piston 5 in the region of the flat 16. This results a slight play between the piston rings 18, 19 and the Inner wall of the cylinder formed by the blind bore 4. This game is required to achieve that the holding piston with his on the Flattening 16 edges 25,26 formed on the inner wall of the cylinder can support.
  • the mode of action is the following: For clamping pressure in the pressure chamber 12 is initiated.
  • the holding piston 5 moves to the right and pushes its wedge slope 8 under the clamping bolt 2 along.
  • the clamping bolt 2 slides with its guide piece in the guideway and is thus guided up out of the housing 1 out.
  • the system is fixed by the holding piston 5 is supported with the edges 25,26 of the flattening 16 on the wall of the cylinder and the clamping bolt 2 surfaces with its wedge 14 presses on the flanks of the keyway 9 ,
  • By supporting the retaining piston 5 with the edges 25,26 of the flattening 16 on the cylinder wall is formed between clamping bolt and retaining piston in a rigid structure free of any settling phenomenon.
  • FIG. 4 another example of the invention is shown. So far the Holding piston 5 described as a one-piece whole.
  • This Holding piston can also be made of two parts. The separation of the two Parts lies in the plane between the two piston rings 18,19 with the intermediate gasket 17 and the piston rod.
  • the piston rings with The centrally located seal are manufactured as one piece and are over the diameter equipped with a dovetail 23.
  • the counterpart is made of the piston rod with the wedge slope 8 and the keyway 9 and the guideway and is provided with a dovetail groove 24 in the the piston ring piece can be inserted.

Abstract

The clamping arrangement for workpieces has a hydraulically operated clamping force holder element with clamping bolt (2) an its holder piston (5) at right angles to each other. The holding force is produced by elements with wedge-shaped surfaces. The holde piston has a wedge-shaped groove in the bottom of which is a lengthwise hole. A gap between the wedge shaped groove and hole produces a guide track. One end of the clamping bolt has two wedge-shaped surfaces (14) at acute angles with each other and whic end in a lug whose external diameter match the internal diameter of the hole.

Description

Die Erfindung bezieht sich auf eine Spannvorrichtung zum Spannen von Werkstücken auf Tischen, Vorrichtungen oder Paletten, gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a Clamping device for clamping of Workpieces on tables, devices or pallets, according to the preamble of claim 1.

Beim Spannen von Werkstücken auf Tischen, Vorrichtungen oder Paletten muß sicher gestellt werden, daß die Werkstücke im gespannten Zustand so festgesetzt sind, daß die während der Dauer der Bearbeitung auf sie einwirkenden Kräfte die Spannkraft nicht vermindern.When clamping workpieces on tables, fixtures or pallets must be sure that the workpieces in the tensioned state so are fixed that during the period of processing on them acting forces do not reduce the clamping force.

Es ist eine Spannvorrichtung zum Spannen von Werkstücken gemäß dem Oberbegriff des Anspruchs 1 bekannt (EP 0 620 084), bei der ein Spannkopf auf einer schiefen Ebene gleitend so geführt ist, daß die Reibungskräfte in dieser Ebene größer sind als die auf den Spannkopf einwirkenden Kräfte. Die schiefe Ebene wird gebildet zwischen dem unteren Teil des in einen Stößel übergehenden Spannkopfes und der Kolbenstange eines quer zur Wirkungsrichtung des Spannkopfes angeordneten Spannkrafthalteelementes. Zur Erhöhung der Reibungskraft im Bereich der schiefen Ebene ist in der Keilfläche der Kolbenstange eine Keilnut eingebracht und der Stößel mit Keilschrägen versehen. Die Keilschrägen gleiten in der Keilnut. Um den Spannkopf gegen das Werkstück zu fahren wird sowohl für den Spannkopf als auch für den Haltekolben je ein hydraulischer Antrieb benötigt. Diese beiden getrennten Hydraulikantriebssysteme bedingen eine relativ große Bauweise.It is known a clamping device for clamping workpieces according to the preamble of claim 1 (EP 0 620 084), in which a clamping head sliding on an inclined plane so is guided, that the friction forces are greater in this plane than those on the Chuck acting forces. The inclined plane is formed between the lower part of the passing into a ram clamping head and the Piston rod arranged transversely to the direction of action of the clamping head Clamping force holding element. To increase the frictional force in the area of inclined plane is introduced in the wedge surface of the piston rod a keyway and the ram provided with wedge slopes. The wedge slopes slide in the Keyway. To drive the chuck against the workpiece is for both the Chuck as well as for the holding piston ever required a hydraulic drive. These two separate hydraulic drive systems require a relatively large Construction.

Die Spanntechnik geht dazu über, kleinere hoch wirksame Spannelemente in gedrängter Bauweise einzusetzen. Es ist somit Aufgabe der Erfindung einmal die beiden Hydrauliksysteme in ein System zu integrieren und zum anderen die Elemente dieses einen Hydrauliksystems so zu gestalten, daß der Spannbolzen in seiner Arbeitsposition ohne Setzerscheinung selbsthemmend festgesetzt ist. Der Vorteil ist eine gedrängte Bauweise, die sich leicht allen Gegebenheiten bei der Spanntechnik anpassen läßt.The clamping technology is changing to smaller, highly effective clamping elements in to use crowded construction. It is thus an object of the invention once to integrate the two hydraulic systems in one system and the other Make elements of this hydraulic system so that the clamping bolt is self-locking set in its working position without settling. The advantage is a compact design that easily accommodates all circumstances can adjust the clamping technology.

Die Lösung ist in den Merkmalen des unabhängigen Anspruchs 1 enthalten.The solution is in the characteristics of independent claim 1 included.

Die Erfindung ist in den Fig. näher erläutert.

  • Fig. 1 zeigt die Spannvorrichtung im entspannten Zustand
  • Fig. 2 zeigt die Spannvorrichtung im gespannten Zustand
  • Fig. 3 zeigt das Ineinandergreifen der keilförmigen Elemente
  • Fig. 4 zeigt den Haltekolben
    • The invention is explained in more detail in the figures.
  • Fig. 1 shows the tensioning device in the relaxed state
  • Fig. 2 shows the tensioning device in the tensioned state
  • Fig. 3 shows the interlocking of the wedge-shaped elements
  • Fig. 4 shows the holding piston

    • In Fig. 1 ist in dem Gehäuse 1 eine Bohrung 3 eingebracht, in der der Spannbolzen 2 gleitend geführt ist. Quer zur Bewegungsrichtung des Spannbolzens 2 ist eine Sackbohrung 4 im Gehäuse 1 vorgesehen, die den Zylinder für den Haltekolben 5 bildet. Dieser Haltekolben 5 ist ein doppelt wirkender Kolben, zwischen dessen beiden Kolbenflächen 6,7 die Kolbenstange mit einer Keilfläche 8 versehen ist. Diese Keilfläche 8 bildet eine in Spannrichtung abfallende Schräge. In diese Keilfläche 8 ist eine Keilnut 9 eingelassen. Diese Keilnut 9 verläuft parallel zur Keilfläche 8 mit const. Tiefe. In ihrem unteren Bereich, wo die beiden Flanken der Keilnut 9 im spitzen Winkel auf einander zu laufen ist eine Bohrung 10 längs der Keilnut 9 eingebracht, so daß zwischen Keilnutgrund und Bohrung ein offener Spalt 11 entsteht. Die beiden Flanken der Keilnut 9 bilden mit der offenen Bohrung eine Führungsbahn.In Fig. 1, a bore 3 is introduced in the housing 1, in which the Clamping bolt 2 is slidably guided. Transverse to the direction of movement of Clamping bolt 2 is a blind bore 4 is provided in the housing 1, the Cylinder for the holding piston 5 forms. This holding piston 5 is a double acting piston, between the two piston surfaces 6,7, the piston rod is provided with a wedge surface 8. This wedge surface 8 forms an in Clamping slope sloping slope. In this wedge surface 8 is a keyway. 9 admitted. This keyway 9 extends parallel to the wedge surface 8 with const. Depth. In its lower area, where the two flanks of the keyway 9 in an acute Angle to run on each other is a bore 10 along the keyway. 9 introduced so that between Keilnutgrund and bore an open gap 11th arises. The two flanks of the keyway 9 form with the open bore a guideway.

    Diese Führungsbahn ist in einem solchen Bereich über den Haltekolben 5 geführt, daß der Spannvorgang vollziehbar ist. Der Haltekolben 5 wird durch Beaufschlagung des Druckraumes 12 in seine Spannstellung gefahren und durch Beaufschlagung des Druckraumes 13 in seine Ausgangsstellung zurückgefahren.This guideway is in such an area on the holding piston. 5 guided that the clamping operation is executable. The holding piston 5 is through Actuation of the pressure chamber 12 is moved to its clamping position and by acting on the pressure chamber 13 in its starting position scaled back.

    Der Spannbolzen 2 ist in seinem unteren Bereich zum Haltekolben hin mit Keilflächen 14 versehen, deren Schräge exakt der Schräge der Keilnut 9 angepaßt ist. Die Keilflächen 14 laufen jedoch nicht spitz aus, sondern enden in einem Nocken 15. Dieser Nocken 15 entspricht in seinem Durchmesser dem Innendurchmesser der Bohrung 10. Der Nocken 15 ist im unteren Teil abgeflacht, so daß sein Querschnitt nicht ganz dem Halbkreis entspricht. Der Spannbolzen 2 bildet somit im unteren Bereich ein aus den Keilflächen 14 und dem Nocken 15 gebildetes keilförmiges Führungsstück. Dieses Führungsstück ist in die Führungsbahn einfügbar und gleitet darin in der gebildeten schiefen Ebene.The clamping bolt 2 is in its lower part to the holding piston out with Wedge surfaces 14 provided whose slope exactly the slope of the keyway. 9 is adapted. However, the wedge surfaces 14 are not pointed, but end in a cam 15. This cam 15 corresponds in diameter the inner diameter of the bore 10. The cam 15 is in the lower part flattened so that its cross-section does not quite correspond to the semicircle. Of the Clamping pin 2 thus forms in the lower part of the wedge surfaces 14 and the cam 15 formed wedge-shaped guide piece. This guide piece is inserted into the guideway and slides in it in the formed crooked Level.

    Der Haltekolben 5 ist in seinem unteren Bereich mit einer Abflachung 16 versehen. Diese Abflachung 16 ist zum Druckraum 13 hin offen. Zum Druckraum 12 hin endet sie kurz vor der Dichtung 17. Damit bildet der Haltekolben links und rechts der Dichtung 17 zwei Kolbenringe 18, 19. Der Durchmesser dieser Kolbenringe 18,19 ist geringfügig kleiner als der Durchmesser des Haltekolbens 5 im Bereich der Abflachung 16. Damit ergibt sich ein geringfügiges Spiel zwischen den Kolbenringen 18, 19 und der Innenwandung des durch die Sackbohrung 4 gebildeten Zylinders. Dieses Spiel ist erforderlich um zu erreichen, daß der Haltekolben sich mit seinen an der Abflachung 16 gebildeten Kanten 25,26 an der Innenwandung des Zylinders abstützen kann.The holding piston 5 is in its lower region with a flat 16th Mistake. This flattening 16 is open to the pressure chamber 13. To the Pressure chamber 12 towards it ends just before the seal 17th Thus forms the Holding piston left and right of the seal 17 two piston rings 18, 19. The Diameter of these piston rings 18,19 is slightly smaller than that Diameter of the holding piston 5 in the region of the flat 16. This results a slight play between the piston rings 18, 19 and the Inner wall of the cylinder formed by the blind bore 4. This game is required to achieve that the holding piston with his on the Flattening 16 edges 25,26 formed on the inner wall of the cylinder can support.

    Die Wirkungsweise ist folgende:
    Zum Spannen wird Druck in den Druckraum 12 eingeleitet. Der Haltekolben 5 bewegt sich nach rechts und schiebt dabei seine Keilschräge 8 unter den Spannbolzen 2 entlang. Der Spannbolzen 2 gleitet mit seinem Führungsstück in der Führungsbahn und wird damit nach oben aus dem Gehäuse 1 heraus geführt. Sobald der Spannbolzen an dem Werkstück anliegt, setzt sich das System fest, indem sich der Haltekolben 5 mit den Kanten 25,26 der Abflachung 16 an der Wandung des Zylinders abstützt und der Spannbolzen 2 mit seinen Keil flächen 14 auf die Flanken der Keilnut 9 drückt. Durch die Abstützung des Haltekolbens 5 mit den Kanten 25,26 der Abflachung 16 an der Zylinderwandung entsteht zwischen Spannbolzen und Haltekolben ein in sich starres Gebilde frei von jeder Setzerscheinung. Rückwirkende Kräfte, die bei der Bearbeitung des Werkstückes entstehen, haben keinen Einfluß auf den Spannbolzen, auch dann nicht, wenn die Hydraulik - gleich aus welchen Gründen - ausfällt, da durch Flächenpressung an den Keil flächen 14 und den Kanten 25,26 der Abflachung 16 Selbsthemmung entsteht, die ein Zurückweichen des Haltekolbens 5 verhindert.    The mode of action is the following:
    For clamping pressure in the pressure chamber 12 is initiated. The holding piston 5 moves to the right and pushes its wedge slope 8 under the clamping bolt 2 along. The clamping bolt 2 slides with its guide piece in the guideway and is thus guided up out of the housing 1 out. Once the clamping bolt rests on the workpiece, the system is fixed by the holding piston 5 is supported with the edges 25,26 of the flattening 16 on the wall of the cylinder and the clamping bolt 2 surfaces with its wedge 14 presses on the flanks of the keyway 9 , By supporting the retaining piston 5 with the edges 25,26 of the flattening 16 on the cylinder wall is formed between clamping bolt and retaining piston in a rigid structure free of any settling phenomenon. Retroactive forces that arise during machining of the workpiece, have no effect on the clamping bolt, even if the hydraulic - for whatever reason - fails, as by surface pressure on the wedge surfaces 14 and the edges 25,26 of the flattening 16th Self-locking occurs, which prevents retraction of the holding piston 5.

    Zum Entspannen wird der Druckraum 13 beaufschlagt. Die Hydraulik wird hierzu am Hydraulikanschluß 20 angelegt und über Leitung 21 in den Druckraum 13 geführt. Damit umspült die Hydraulik gleichzeitig den Kolben in seiner unteren Abflachung 16 und den Hohlraum 22 in der Bohrung 10 unterhalb des abgeflachten Nocken 15 und dringt auch in die Keilnut 9 ein. Der sich in dem Druckraum 13, in der Keilnut 9 und in der Bohrung 10 aufbauende Druck bewirkt, daß der Haltekolben 5 in seine Ausgangsstellung zurückgeführt wird und gleichzeitig der Spannbolzen 2 mit seinem Führungsstück in der Führungsbahn angehoben wird und sich damit löst, so daß er in der Führungsbahn gleitet. Der Spannbolzen wird damit in das Gehäuse eingefahren.To relax the pressure chamber 13 is acted upon. The hydraulics will this applied to the hydraulic connection 20 and via line 21 in the Pressure chamber 13 out. At the same time, the hydraulic system flows around the piston its lower flattening 16 and the cavity 22 in the bore 10th below the flattened cam 15 and also penetrates into the keyway 9 a. Which is in the pressure chamber 13, in the keyway 9 and in the bore 10th constructive pressure causes the holding piston 5 in its initial position is returned and at the same time the clamping bolt 2 with his Guide piece is raised in the guideway and thus dissolves, so that he slides in the guideway. The clamping bolt is thus in the Housing retracted.

    In Fig. 4 ist ein weiteres Beispiel der Erfindung gezeigt. Bisher ist der Haltekolben 5 als ein aus einem Stück bestehendes Ganzes beschrieben. Dieser Haltekolben läßt sich auch aus zwei Teilen fertigen. Die Trennung der beiden Teile liegt in der Ebene zwischen den beiden Kolbenringen 18,19 mit der dazwischen liegenden Dichtung 17 und der Kolbenstange. Die Kolbenringe mit der mittig liegenden Dichtung werden als ein Stück gefertigt und werden über den Durchmesser mit einem Schwalbenschwanz 23 bestückt. Das Gegenstück ist aus der Kolbenstange gefertigt mit der Keilschräge 8 und der Keilnut 9 und der Führungsbahn und ist mit einer Schwalbenschwanznut 24 versehen, in die das Kolbenringstück einfügbar ist.In Fig. 4, another example of the invention is shown. So far the Holding piston 5 described as a one-piece whole. This Holding piston can also be made of two parts. The separation of the two Parts lies in the plane between the two piston rings 18,19 with the intermediate gasket 17 and the piston rod. The piston rings with The centrally located seal are manufactured as one piece and are over the diameter equipped with a dovetail 23. The counterpart is made of the piston rod with the wedge slope 8 and the keyway 9 and the guideway and is provided with a dovetail groove 24 in the the piston ring piece can be inserted.

    Claims (6)

    1. Clamping device for clamping work pieces on tables, jigs or pallets, comprising a hydraulically operated element for maintaining the clamping force, wherein a clamping bolt (2) and its retaining piston (5) are disposed in an approximately orthogonal mutual relationship and wherein the holding force is generated via elements provided with wedge surfaces sliding on each other, characterised in that said retaining piston (5) is provided with a keyway (9) having a keyway bottom in which a longitudinally extending bore (10) is formed, and that a gap (11) is formed between said keyway and said bore so as to create a guide way, and that said clamping bolt (2) is provided with two wedge surfaces (14) on one end, which converge towards each other at an acute angle and terminate in a cam (15) whose outside diameter corresponds to the inside diameter of said bore (10) and which is flattened in its lower part, thus creating a guide element, and that said clamping bolt (2) together with its guide element slides into the guide way of said retaining piston (5).
    2. Clamping device according to Claim 1, characterised in that said retaining piston (5) is provided with a flattened portion (16) in its lower region over the length of its wedge inclination (8).
    3. Clamping device according to Claim 2, characterised in that said retaining piston (5) is equipped with a peripheral seal (17) disposed in a groove on that side that is associated with the pressurising volume (12) for the clamping operation, and that two piston rings (18, 19) are formed on the left and right sides of said seal, whose outside diameter is maintained smaller by a small amount than the diameter of said piston (5) in the region of said flattened portion (16).
    4. Clamping device according to Claim 3, characterised in that when a pressure is exerted, said retaining piston (5) is pressed by its edges (25, 26) in the region of said flattened portion (16) against the cylinder wall and is supported on said cylinder wall on account of the clearance of said piston rings (18, 19) maintained at a smaller dimension of the diameter.
    5. Clamping device according to Claim 1, characterised in that during the relaxation operation with pressurisation in said pressurising volume (13), the hydraulic fluid flows into the hollow space (22) forming underneath said cam (15) in said bore (10) and into said keyway (9) so that said clamping bolt (2) is released from said keyway under the establishing pressure and easily slides in said guide way.
    6. Clamping device according to Claim 1, characterised in that said retaining piston (5) is constituted by two parts that can be joined in each other by means of a dovetail guide, whereof one part consists of said piston rings (18, 19) with said seal (17) interposed between them whilst the other part thereof constitutes the piston rod with the wedge inclination.
    EP00107619A 1999-04-24 2000-04-08 Clamping device for clamping workpieces Expired - Lifetime EP1046468B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE19918770A DE19918770A1 (en) 1999-04-24 1999-04-24 Clamping device for clamping workpieces
    DE19918770 1999-04-24

    Publications (3)

    Publication Number Publication Date
    EP1046468A2 EP1046468A2 (en) 2000-10-25
    EP1046468A3 EP1046468A3 (en) 2001-02-14
    EP1046468B1 true EP1046468B1 (en) 2003-09-24

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    Application Number Title Priority Date Filing Date
    EP00107619A Expired - Lifetime EP1046468B1 (en) 1999-04-24 2000-04-08 Clamping device for clamping workpieces

    Country Status (4)

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    US (1) US6308943B1 (en)
    EP (1) EP1046468B1 (en)
    AT (1) ATE250485T1 (en)
    DE (2) DE19918770A1 (en)

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE102008049753A1 (en) 2008-10-01 2010-04-08 Ludwig Ehrhardt Gmbh Clamping device for clamping workpiece on e.g. table, has clamping bolt and holder piston that are connected with each other by dovetail connection, where bolt and piston are arranged at right angles to each other

    Families Citing this family (16)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE102006006093B3 (en) * 2006-02-10 2007-07-19 Audi Ag Clamping device for clamping work piece e.g. piping component, in vehicle construction, has swivelable jaw supported in connecting unit, where opening angle is reduced when corresponding larger clamping force acts on jaw
    ITBS20080039A1 (en) * 2008-02-21 2009-08-22 Gimatic Spa SINGLE-FIT SOCKET TOOL
    US20110121504A1 (en) * 2009-11-23 2011-05-26 Steve Donald Krohmer Non-slip spacer
    US8943661B2 (en) 2010-11-23 2015-02-03 Rockler Companies, Inc. Non-slip spacer support system
    US8459628B2 (en) * 2011-04-01 2013-06-11 Nomis Llc Non-slip bench support block
    CN103394944A (en) * 2013-07-30 2013-11-20 江苏新贝斯特中传科技有限公司 Self-locking oil cylinder
    CN105171482A (en) * 2015-09-25 2015-12-23 中国南方航空工业(集团)有限公司 Pressing device used for blade machining
    CN105563188A (en) * 2016-02-29 2016-05-11 无锡烨隆精密机械有限公司 Wedge type high-strength supporting structure for machining
    CN105834781A (en) * 2016-04-22 2016-08-10 安庆中船动力配套有限公司 Boring fixture for two-dimensional inclined hole of cylinder cover
    CN106801704A (en) * 2017-03-02 2017-06-06 宜昌长机科技有限责任公司 One kind linear motion clamp system
    DE102019120427B4 (en) * 2019-07-29 2024-05-02 Ludwig Ehrhardt Gmbh Bore clamp with reset device
    CN111940836A (en) * 2019-05-15 2020-11-17 江苏宁兴恒力智能设备有限公司 Stroke effectively lengthened sub-material wedge block side top structure
    USD983647S1 (en) 2020-07-01 2023-04-18 Rockler Companies, Inc. Workpiece support
    US11878381B2 (en) 2020-08-06 2024-01-23 Mate Precision Technologies Inc. Tooling base assembly
    WO2022032178A1 (en) 2020-08-06 2022-02-10 Mate Precision Technologies Inc. Vise assembly
    CN113857894B (en) * 2021-09-09 2023-04-07 济南山川机械制造有限公司 Milling machine fixture used for machine tool and capable of adjusting height of gasket and facilitating locking of workpiece

    Family Cites Families (15)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE332373C (en) * 1921-02-01 Ferdinand Rumpf Swiveling vice jaw
    DE251439C (en) *
    DE1646420U (en) * 1952-02-25 1952-11-06 Otto Bangel ADDITIONAL JAWS FOR MACHINE SCREWS.
    DE1552707A1 (en) * 1966-03-02 1970-07-02 Volk Geb Knaebler Clamping element in which the clamping force is generated by a pressure medium
    SU814647A1 (en) * 1979-06-15 1981-03-23 Барановичское Специальное Конструк-Topckoe Бюро Автоматических Линий Approachable support
    US4506871A (en) * 1983-05-10 1985-03-26 Aioi Seiki Kabushiki Kaisha Retracting clamp
    JPS61501385A (en) * 1984-03-12 1986-07-10 ヒルマン，ゲオルグ Methods and devices for transferring force
    DE3733676A1 (en) * 1987-10-05 1989-04-20 Roemheld A Gmbh & Co Kg Hydraulic clamping element
    JP2787575B2 (en) * 1988-07-11 1998-08-20 株式会社コスメック Wedge boost hydraulic clamp
    TW235262B (en) * 1991-06-14 1994-12-01 Kosumekku Kk
    DE4311857A1 (en) * 1993-04-10 1994-10-13 David Fischer Clamping device for clamping workpieces
    US5374041A (en) * 1994-02-25 1994-12-20 Kurt Manufacturing Company, Inc. Vise
    DE19531889A1 (en) 1995-08-30 1997-03-06 Rudolf Kohlert Clamping element
    DE19617927A1 (en) 1996-05-05 1997-11-13 Rudolf Kohlert Support element for fragile workpieces on machine tools
    KR0156838B1 (en) * 1996-06-14 1998-11-16 박병재 Clamp device for milling work of engine

    Cited By (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE102008049753A1 (en) 2008-10-01 2010-04-08 Ludwig Ehrhardt Gmbh Clamping device for clamping workpiece on e.g. table, has clamping bolt and holder piston that are connected with each other by dovetail connection, where bolt and piston are arranged at right angles to each other
    DE102008049753B4 (en) 2008-10-01 2019-12-24 Ludwig Ehrhardt Gmbh Clamping device for clamping workpieces

    Also Published As

    Publication number Publication date
    ATE250485T1 (en) 2003-10-15
    EP1046468A3 (en) 2001-02-14
    EP1046468A2 (en) 2000-10-25
    DE19918770A1 (en) 2000-10-26
    US6308943B1 (en) 2001-10-30
    DE50003787D1 (en) 2003-10-30

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