EP1308244A2 - Clamping device with sliding clamping jaw - Google Patents

Clamping device with sliding clamping jaw Download PDF

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Publication number
EP1308244A2
EP1308244A2 EP02102507A EP02102507A EP1308244A2 EP 1308244 A2 EP1308244 A2 EP 1308244A2 EP 02102507 A EP02102507 A EP 02102507A EP 02102507 A EP02102507 A EP 02102507A EP 1308244 A2 EP1308244 A2 EP 1308244A2
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EP
European Patent Office
Prior art keywords
clamping
lever
element according
clamping element
clamping lever
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
EP02102507A
Other languages
German (de)
French (fr)
Other versions
EP1308244B1 (en
EP1308244A3 (en
Inventor
Rudolf Kohlert
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.)
Ludwig Ehrhardt GmbH
Original Assignee
Ludwig Ehrhardt GmbH
A Roemheld GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Ludwig Ehrhardt GmbH, A Roemheld GmbH and Co KG filed Critical Ludwig Ehrhardt GmbH
Publication of EP1308244A2 publication Critical patent/EP1308244A2/en
Publication of EP1308244A3 publication Critical patent/EP1308244A3/en
Application granted granted Critical
Publication of EP1308244B1 publication Critical patent/EP1308244B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B25B5/061—Arrangements for positively actuating jaws with fluid drive
    • B25B5/064—Arrangements for positively actuating jaws with fluid drive with clamping means pivoting around an axis perpendicular to the pressing direction

Definitions

  • the invention relates to a clamping element for clamping workpieces on machine tables, devices or pallets by means of a tiltable one Clamping lever that can be moved in the clamping plane.
  • the clamping of workpieces on machine tables and the like is conditional Clamping elements that have a large free space around the workpiece to be able to change without having to remove the clamping lever. Furthermore the clamping levers must be adaptable to the workpiece inserted. This is done once by changing the tension levers, which come in different sizes are present, achieved and secondly by tension levers, which are mounted so that they are adaptable in length to the workpiece.
  • Fig. 1 shows a section through the clamping element in the tensioned state.
  • Fig. 2 shows a top view.
  • Fig. 3 shows a side view with a partial section of the bearing point.
  • Fig. 4 shows the front view in the tensioned state and the tensioning lever with adjustable pressure screw.
  • Fig. 5 shows the axle bolt with different guide pins.
  • the clamping element consists of the housing 1 as the base body. This Housing 1 is assigned to the clamping lever 2.
  • the clamping lever 2 is in one upper region of the housing 1 formed fork head 3.
  • the clevis 3 is provided with a through hole 4. In these holes 4 are two Axle pin 5 inserted.
  • Each axle pin 5 has one at one end Guide pin 6.
  • the guide head 6 is on two opposite sides flattened and thus each form a guide surface 7.
  • the axle pin 5 has one Diameter that is adapted to the forces to be absorbed. His pilot pin can differ in diameter. It is important that the flattened Guide surfaces a sufficient cross-section and the circumstances have adapted sliding surface. Will the diameter of the guide pin made larger than the diameter of the axle bolt has the advantage that at the same time a contact surface is formed on the walls of the fork head, so that the axle bolts 5 are already guided in the holes 4 in a determined position.
  • the bore 4 is useful with known means closed so that the clearance of the axle pin is limited.
  • the clamping lever 2 has a square cross section and has two opposite sides each milled a groove 8.
  • This groove 8 corresponds exactly the guide pin 6 with its flattened guide surfaces 7, so that the Guide pins 6 sliding on both sides in the grooves 8 with their guide surfaces 7 can be introduced.
  • the groove 8 is embedded in the clamping lever 2 so that it is on both ends is open to the outside.
  • the clamping lever 2 can by means of a Locking screw 12 can be limited in its movement so that it only after loosening the locking screw 12 is removable.
  • a locking pin 13 is used Limitation of the return of the tensioning lever.
  • the groove 8 continuously inserted in the tensioning lever 2 is used for longitudinal movement the clamping lever is thus limited only by the pin 13.
  • This pin 13 is thus in determined its position and so assigned to the tension lever 2 that the tension lever regardless of its length and regardless of its equipment on Clamping head 18, always fully retracted into the housing 1 in the relaxed state is and thus comes to lie behind the front surface 11.
  • the clamping lever 2 is inserted into the clevis 3 so that the grooves 8 on the Run up guide surfaces 7 of the axle bolts 5. So that the clamping lever can be in its longitudinal direction as desired and at the same time by the by Swivel axle pin 5 formed center axis.
  • the clamping lever 2 can be in its Length can be matched to the respective application. About that it is also possible to provide tension levers of different lengths, which are very can be easily replaced.
  • the tensioning process itself can be initiated hydraulically. This is a drive provided with piston 10.
  • the hydraulic supply can be conveniently from below in the Clamping element take place via the connection 20. This affects the installation of the Elements cheap.
  • the tensioning lever 2 fully retracted into the housing 1 in the relaxed state assures the workpiece to be inserted an optimal free space, because the Housing 1 with its front surface 11 forms a smooth plane and thus for each Workpiece allows effortless insertion and removal.
  • the clamping unit can be mounted on pallets or devices and fix using a fixing screw 14.
  • a support element 16 can also be provided.
  • the clamping lever 2 is inserted into the fork head 3 from the front with its groove 8 on both sides introduced and on the guide surfaces 7 of the axle bolts 5 already used pushed.
  • the cocking lever is completely reset until it is with his Pin 13 strikes the guide pin 6. This is the element for the Clamping process ready.
  • the clamping lever 2 is completely in the Housing 1 retracted so that the front surface 11 of the housing 1 a smooth Level forms.
  • the tensioning lever is advanced until it is exact with its clamping head 18 or its pressure screw 17 above the point of Workpiece lies on which the clamping force is to be initiated. Now the hydraulic pressure released and the piston 10 moves under the tensioning lever and raise it. The tensioning lever tilts around the center axis of the axle bolts and lowers the chuck 18 onto the workpiece. So that is the tensioning process completed.
  • the position of the clamping lever 2 of each is required Detect and display clamping element. This ad is for once on the two end positions of the clamping lever and on the other also on the current position during an operation. This allows all states monitor, which also occur as a result of large machining forces can. Sensors are used to display the respective position Housing are placed and via a path determination of the clamping lever is understandable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
  • Clamps And Clips (AREA)

Abstract

The unit has a housing (1) provided with a fork head (3) having forks each formed with a hole. A tiltable clamping lever (2), displaceable along a clamping plane, is attached to the fork head through rotary pins (5) extending through the holes of the forks.

Description

Die Erfindung bezieht sich auf ein Spannelement zum Spannen von Werkstücken auf Maschinentischen, Vorrichtungen oder Paletten mittels eines kippbar gelagerten Spannhebels, der in der Spannebene verschiebbar ist.The invention relates to a clamping element for clamping workpieces on machine tables, devices or pallets by means of a tiltable one Clamping lever that can be moved in the clamping plane.

Das Spannen von Werkstücken auf Maschinentischen und dergleichen bedingt Spannelemente, die über einen großen Freiraum verfügen, um das Werkstück wechseln zu können, ohne den Spannhebel ausbauen zu müssen. Darüber hinaus müssen die Spannhebel dem jeweils eingelegten Werkstück anpaßbar sein. Dieses wird einmal durch einen Wechsel der Spannhebel, die in verschiedenen Größen vorhanden sind, erreicht und zum anderen durch Spannhebel, die so gelagert sind, daß sie in ihrer Länge an das Werkstück anpaßbar sind.The clamping of workpieces on machine tables and the like is conditional Clamping elements that have a large free space around the workpiece to be able to change without having to remove the clamping lever. Furthermore the clamping levers must be adaptable to the workpiece inserted. This is done once by changing the tension levers, which come in different sizes are present, achieved and secondly by tension levers, which are mounted so that they are adaptable in length to the workpiece.

Die Kräfte, die durch die Bearbeitung des Werkstückes entstehen, können sehr groß sein und müssen von den Spannhebeln und ihren Lagern sicher aufgenommen werden. Querschnittsveränderungen an den Spannhebeln durch Einbringen von Längsschlitzen zur Längsverschiebung wirken sich nachteilig auf die Kraftübertragung aus. Darüber hinaus sind Längsschlitze Verschmutzungsgefahren durch Späneflug ausgesetzt. The forces generated by machining the workpiece can be very large and must be safely received by the tension levers and their bearings become. Changes in cross section on the tensioning levers by introducing Longitudinal slots for longitudinal displacement adversely affect the Power transmission off. In addition, longitudinal slots are at risk of contamination exposed by flying chips.

Es ist bekannt (VDI-Verlag 1992 Seite 489 Vorrichtungen, rationelle Planung und Konstruktion) ein Spannelement mit einem Spannhebel zu versehen, der von einer Schraube gehalten wird. Diese Schraube ist mit einer Kegelpfanne versehen, die in einer Kugelscheibe gelagert ist. Der Spannhebel ist mit einem Längsschlitz versehen, durch den die Schraube geführt ist. Dieser Längsschlitz führt zu einer starken Schwächung des Querschnitts des Spannhebels, außerdem ergibt sich durch die auf dem Spannhebel aufliegende Kugelscheibe und der Kegelpfanne der Schraube ein sehr hoch liegender Schwenkmittelpunkt für den Spannhebel, so daß schräg auf das Werkstück einwirkende Kraftkomponenten nicht auszuschließen sind, was zu einem Verreißen des Werkstückes führen kann. Der Längsschlitz ist ferner Verschmutzungen durch Späne der Bearbeitung ausgesetzt, was zu Schwierigkeiten bei der Rückführung des Spannhebels beiträgt.It is known (VDI Verlag 1992 page 489 devices, rational planning and Construction) to provide a tensioning element with a tensioning lever which is operated by a Screw is held. This screw is provided with a conical socket, which in a ball washer is mounted. The tension lever is with a longitudinal slot provided, through which the screw is passed. This longitudinal slot leads to one strong weakening of the cross section of the tensioning lever, also results through the ball washer resting on the clamping lever and the conical socket of the Screw a very high pivot center for the tensioning lever, so that Force components acting obliquely on the workpiece cannot be excluded are what can cause the workpiece to tear. The longitudinal slot is furthermore, exposure to machining chips, resulting in Difficulties in returning the tension lever contributes.

Eine solche Anordnung ist auch dann mit Problemen behaftet, wenn der Spannhebel mit einer Druckschraube versehen wird zur Anpassung an verschiedene Werstückhöhen. Um einen solchen Spannhebel aus dem Wirkungsbereich des Werkstückes zu entfernen muß der Schwenkpunkt weit vom Werkstück entfernt liegen, wodurch der Spannhebel sehr lang ausgeführt sein muß, was sich negativ auf die Kraftübertragung auswirkt. Die Schraubverbindung Kugelscheibe Kegelpfanne ist zudem elastisch, so daß das Werkstück am Spannpunkt insbesondere beim Einwirken von Querkräften infolge Bearbeitung ungenügend abgestützt ist.Such an arrangement is also problematic when the Clamping lever is provided with a pressure screw for adaptation to different workpiece heights. To such a lever from the The pivot point must be removed far from the effective area of the workpiece Workpiece lying away, so the clamping lever must be made very long, which has a negative effect on the power transmission. The screw connection Ball washer is also elastic, so that the workpiece on Clamping point, especially when exposed to transverse forces as a result of machining is insufficiently supported.

Es ist Aufgabe der Erfindung, ein Spannelement derart zu gestalten, daß der Spannhebel schwenkbar ausgeführt und in seiner Längsrichtung verschiebbar gelagert ist, jedoch unabhängig von seiner Länge in seiner Ausgangsposition nicht aus dem Spannelement herausragt auch dann nicht, wenn eine Druckschraube zur Anpassung an unterschiedliche Werkstückhöhen vorgesehen ist.It is an object of the invention to design a clamping element such that the Clamping lever can be swiveled and moved in its longitudinal direction is stored, but not in its starting position regardless of its length does not protrude from the clamping element even if a pressure screw for Adaptation to different workpiece heights is provided.

Die Lösung der Erfindung ist den kennzeichnenden Merkmalen der Ansprüche zu entnehmen.The solution of the invention is to the characterizing features of the claims remove.

Der Vorteil dieser Lösung ist durch die äußerst stabile Lagerung des Spannhebels gegeben, so daß Querkräfte infolge der Bearbeitung wirkungslos auf die Spanneinheit sind. Darüber hinaus erlaubt die Konstruktion kleine Abmessungen in Schieberrichtung und damit die Vermeidung von Störkanten für Zerspannungswerkzeuge.The advantage of this solution is the extremely stable mounting of the tension lever given so that lateral forces due to the processing ineffective on the Are clamping unit. In addition, the construction allows small dimensions in Slide direction and thus the avoidance of interfering edges for Metal cutting tools.

In den Figuren ist die Erfindung näher beschrieben. The invention is described in more detail in the figures.

Fig. 1zeigt einen Schnitt durch das Spannelement im gespannten Zustand.Fig. 1 shows a section through the clamping element in the tensioned state.

Fig. 2 zeigt eine Draufsicht.Fig. 2 shows a top view.

Fig. 3 zeigt eine Seitenansicht mit einem Teilschnitt der Lagerstelle.Fig. 3 shows a side view with a partial section of the bearing point.

Fig. 4 zeigt die Vorderansicht im gespannten Zustand und die Spannhebel mit verstellbarer Druckschraube.Fig. 4 shows the front view in the tensioned state and the tensioning lever with adjustable pressure screw.

Fig. 5 zeigt den Achsbolzen mit verschiedenen Führungszapfen.Fig. 5 shows the axle bolt with different guide pins.

Das Spannelement besteht aus dem Gehäuse 1 als Grundkörper. Diesem Gehäuse 1 ist der Spannhebel 2 zugeordnet. Der Spannhebel 2 wird in einem im oberen Bereich des Gehäuses 1 gebildeten Gabelkopf 3 geführt. Der Gabelkopf 3 ist mit einer durchgehenden Bohrung 4 versehen. In diesen Bohrungen 4 sind zwei Achsbolzen 5 eingesetzt. Jeder Achsbolzen 5 hat an einem Ende einen Führungszapfen 6. Der Führungskopf 6 ist an zwei gegenüberliegenden Seiten abgeflacht und bildet damit je eine Führungsfläche 7. Der Achsbolzen 5 hat einen Durchmesser, der den aufzunehmenden Kräften angepaßt ist. Sein Führungszapfen kann sich im Durchmesser davon unterscheiden. Wichtig ist, daß die abgeflachten Führungsflächen einen ausreichenden Querschnitt und eine den Umständen angepaßte Gleitfläche aufweisen. Wird der Durchmesser des Führungszapfen größer als der Durchmesser des Achsbolzens gemacht ergibt sich der Vorteil, daß zugleich eine Anlagefläche an die Wandungen des Gabelkopfes gebildet wird, so daß die Achsbolzen 5 in den Bohrungen 4 bereits lagebestimmt geführt sind.The clamping element consists of the housing 1 as the base body. this Housing 1 is assigned to the clamping lever 2. The clamping lever 2 is in one upper region of the housing 1 formed fork head 3. The clevis 3 is provided with a through hole 4. In these holes 4 are two Axle pin 5 inserted. Each axle pin 5 has one at one end Guide pin 6. The guide head 6 is on two opposite sides flattened and thus each form a guide surface 7. The axle pin 5 has one Diameter that is adapted to the forces to be absorbed. His pilot pin can differ in diameter. It is important that the flattened Guide surfaces a sufficient cross-section and the circumstances have adapted sliding surface. Will the diameter of the guide pin made larger than the diameter of the axle bolt has the advantage that at the same time a contact surface is formed on the walls of the fork head, so that the axle bolts 5 are already guided in the holes 4 in a determined position.

In den Fällen, in denen der Durchmesser des Führungszapfens gleich oder kleiner als der Durchmesser des Achsbolzens ist, wird die Bohrung 4 zweckmäßig mit bekannten Mitteln so verschlossen, daß der Freiraum des Achsbolzen begrenzt ist.In cases where the diameter of the pilot pin is the same or smaller than the diameter of the axle bolt, the bore 4 is useful with known means closed so that the clearance of the axle pin is limited.

Der Spannhebel 2 hat einen Viereck-Querschnitt und hat an zwei gegenüberliegenden Seiten je eine Nut 8 eingefräst. Diese Nut 8 entspricht exakt dem Führungszapfen 6 mit seinen abgeflachten Führungsflächen 7, so daß die Führungszapfen 6 beidseitig in den Nuten 8 gleitend mit ihren Führungsflächen 7 einführbar sind. Die Nut 8 ist so in den Spannhebel 2 eingelassen, daß sie an beiden Enden nach außen offen ist. Der Spannhebel 2 kann mittels einer Sperrschraube 12 in seinem Bewegungsablauf so begrenzt werden, daß er nur nach Lösen der Sperrschraube 12 entfernbar ist. Ein Sperrstift 13 dient zur Begrenzung des Rücklaufs des Spannhebels. The clamping lever 2 has a square cross section and has two opposite sides each milled a groove 8. This groove 8 corresponds exactly the guide pin 6 with its flattened guide surfaces 7, so that the Guide pins 6 sliding on both sides in the grooves 8 with their guide surfaces 7 can be introduced. The groove 8 is embedded in the clamping lever 2 so that it is on both ends is open to the outside. The clamping lever 2 can by means of a Locking screw 12 can be limited in its movement so that it only after loosening the locking screw 12 is removable. A locking pin 13 is used Limitation of the return of the tensioning lever.

Die im Spannhebel 2 durchgehend eingelassene Nut 8 wird für die Längsbewebung des Spannhebels somit nur durch den Stift 13 begrenzt. Dieser Stift 13 ist damit in seiner Lage bestimmt und so dem Spannhebel 2 zugeordnet, daß der Spannhebel unabhängig von seiner Länge und unabhängig von seiner Bestückung am Spannkopf 18, im entspannten Zustand immer ganz in das Gehäuse 1 eingefahren ist und damit hinter der Frontfläche 11 zu liegen kommt.The groove 8 continuously inserted in the tensioning lever 2 is used for longitudinal movement the clamping lever is thus limited only by the pin 13. This pin 13 is thus in determined its position and so assigned to the tension lever 2 that the tension lever regardless of its length and regardless of its equipment on Clamping head 18, always fully retracted into the housing 1 in the relaxed state is and thus comes to lie behind the front surface 11.

Der Spannhebel 2 wird in den Gabelkopf 3 so eingeführt, daß die Nuten 8 auf die Führungsflächen 7 der Achsbolzen 5 auflaufen. Damit läßt sich der Spannhebel in seiner Längsrichtung beliebig verschieben und gleichzeitig um die durch die Achsbolzen 5 gebildete Mittenachse schwenken. Der Spannhebel 2 kann in seiner Länge auf den jeweiligen Anwendungsfall damit abgestimmt werden. Darüber hinaus ist es möglich, Spannhebel unterschiedlicher Länge vorzusehen, die sehr leicht ausgewechselt werden können.The clamping lever 2 is inserted into the clevis 3 so that the grooves 8 on the Run up guide surfaces 7 of the axle bolts 5. So that the clamping lever can be in its longitudinal direction as desired and at the same time by the by Swivel axle pin 5 formed center axis. The clamping lever 2 can be in its Length can be matched to the respective application. About that it is also possible to provide tension levers of different lengths, which are very can be easily replaced.

Der Spannvorgang selbst kann hydraulisch eingeleitet werden. Dazu ist ein Antrieb mit Kolben 10 vorgesehen. Die Hydraulikzufuhr kann zweckmäßig von unten in das Spannelement über den Anschluß 20 erfolgen. Dieses wirkt sich auf den Einbau der Elemente günstig aus.The tensioning process itself can be initiated hydraulically. This is a drive provided with piston 10. The hydraulic supply can be conveniently from below in the Clamping element take place via the connection 20. This affects the installation of the Elements cheap.

Der im entspannten Zustand ganz in das Gehäuse 1 eingefahrene Spannhebel 2 sichert somit dem einzulegenden Werkstück einen optimalen Freiraum zu, da das Gehäuse 1 mit seiner Frontfläche 11 eine glatte Ebene bildet und somit für jedes Werkstück das Einlegen und Entnehmen mühelos gestattet.The tensioning lever 2 fully retracted into the housing 1 in the relaxed state assures the workpiece to be inserted an optimal free space, because the Housing 1 with its front surface 11 forms a smooth plane and thus for each Workpiece allows effortless insertion and removal.

Die Spanneinheit läßt sich beliebig auf Paletten oder Vorrichtungen montieren und mittels einer Befestigungsschraube 14 festsetzen. Zur Aufnahme eines Werkstückes 15 kann zusätzlich ein Stützelement 16 vorgesehen sein.The clamping unit can be mounted on pallets or devices and fix using a fixing screw 14. To accommodate a Workpiece 15, a support element 16 can also be provided.

Die Fig. 4 zeigt das Spannelement mit einer am Spannkopf des Spannhebels 2 angebrachten Druckschraube 17. Diese in der Höhe verstellbare Druckschraube 17 gewährt eine gute Anpaßmöglichkeit des Spannelements an unterschiedliche Dicken des Werkstückes 15. Im entspannten Zustand fährt der Spannhebel 2 mit der Druckschraube 17 in das Gehäuse 1 ein, so daß die Druckschraube 17 in der im Gehäuse 1 gebildeten Tasche 19 aufgenommen wird, deren Breite annähernd der lichten Weite des Gabelkopfes 3 entspricht. Damit ist der Spannhebel 2 zusammen mit der Druckschraube 17 soweit in das Gehäuse 1 eingezogen, daß er hinter der Frontfläche 11 liegt.4 shows the clamping element with one on the clamping head of the clamping lever 2 attached pressure screw 17. This height-adjustable pressure screw 17 grants a good possibility of adapting the clamping element to different Thickness of the workpiece 15. In the relaxed state, the clamping lever 2 moves along the pressure screw 17 in the housing 1, so that the pressure screw 17 in the Housing 1 formed pocket 19 is added, the width of which is approximately clear width of the clevis 3 corresponds. So that the tension lever 2 is together pulled so far into the housing 1 with the pressure screw 17 that it is behind the Front surface 11 is.

Der Spannhebel 2 wird mit seiner beidseitigen Nut 8 von vorn in den Gabelkopf 3 eingeführt und auf die Führungsflächen 7 der bereits eingesetzten Achsbolzen 5 geschoben. Der Spannhebel wird hierbei ganz zurückgesetzt, bis er mit seinem Stift 13 am Führungszapfen 6 anschlägt. Damit ist das Element für den Spannvorgang bereit. In dieser Position ist der Spannhebel 2 ganz in das Gehäuse 1 eingefahren, so daß die Frontfläche 11 des Gehäuses 1 eine glatte Ebene bildet.The clamping lever 2 is inserted into the fork head 3 from the front with its groove 8 on both sides introduced and on the guide surfaces 7 of the axle bolts 5 already used pushed. The cocking lever is completely reset until it is with his Pin 13 strikes the guide pin 6. This is the element for the Clamping process ready. In this position, the clamping lever 2 is completely in the Housing 1 retracted so that the front surface 11 of the housing 1 a smooth Level forms.

Nach entsprechender Montage und Einlegen des Werkstücks wird der Spannvorgang eingeleitet. Der Spannhebel wird so weit vorgeschoben, bis er exakt mit seinem Spannkopf 18 oder seiner Druckschraube 17 über dem Punkt des Werkstückes liegt, an dem die Spannkraft eingeleitet werden soll. Nunmehr wird der hydraulische Druck freigegeben und der Kolben 10 fährt unter den Spannhebel und hebt diesen an. Der Spannhebel kippt um die Mittenachse der Achsbolzen und senkt den Spannkopf 18 auf das Werkstück ab. Damit ist der Spannvorgang vollzogen.After appropriate assembly and insertion of the workpiece, the Clamping process initiated. The tensioning lever is advanced until it is exact with its clamping head 18 or its pressure screw 17 above the point of Workpiece lies on which the clamping force is to be initiated. Now the hydraulic pressure released and the piston 10 moves under the tensioning lever and raise it. The tensioning lever tilts around the center axis of the axle bolts and lowers the chuck 18 onto the workpiece. So that is the tensioning process completed.

In bestimmten Fällen ist es erforderlich die Lage des Spannhebels 2 eines jeden Spannelementes zu erfassen und anzuzeigen. Diese Anzeige bezieht sich einmal auf die beiden Endstellungen des Spannhebels und zum anderen auch auf die jeweilige Lage während eines Arbeitsvorganges. Damit lassen sich alle Zustände überwachen, die unter anderem auch als Folge großer Bearbeitungskräfte auftreten können. Zur Anzeige der jeweiligen Stellung werden Sensoren eingesetzt, die am Gehäuse plaziert sind und über die eine Wegbestimmung des Spannhebels nachvollziehbar ist. In certain cases, the position of the clamping lever 2 of each is required Detect and display clamping element. This ad is for once on the two end positions of the clamping lever and on the other also on the current position during an operation. This allows all states monitor, which also occur as a result of large machining forces can. Sensors are used to display the respective position Housing are placed and via a path determination of the clamping lever is understandable.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

11
Gehäusecasing
22
Spannhebelclamping lever
33
Gabelkopfclevis
44
Bohrungdrilling
55
Achsbolzenaxle
66
Führungszapfenspigot
77
Führungsflächeguide surface
88th
Führungsnutguide
9 109 10
Kolbenpiston
1111
Frontflächefront surface
1212
Sperrschraubelocking screw
1313
Sperrstiftlocking pin
1414
Befestigungsschraubefixing screw
1515
Werkstückworkpiece
1616
Stützelementsupport element
1717
Druckschraubepressure screw
1818
Spannkopfclamping head
1919
Taschebag
2020
Hydraulik-AnschlußHydraulic connection

Claims (11)

Spannelement zum Spannen von Werkstücken auf Maschinentischen und dergleichen mittels eines kippbar gelagerten Spannhebels, der in der Spannebene längsverschiebbar angeordnet ist, dadurch gekennzeichnet, daß das Gehäuse (1) mit einem Gabelkopf (3) versehen ist, in dessen Gabeln annähernd mittig je eine Bohrung (4) eingelassen ist und daß in jeder Bohrung (4) ein drehbar gelagerter Achsbolzen (5) eingefügt ist.Clamping element for clamping workpieces on machine tables and the like by means of a tiltably mounted clamping lever, which is arranged to be longitudinally displaceable in the clamping plane, characterized in that the housing (1) is provided with a fork head (3), in the forks of which a hole (approximately in the center) 4) is inserted and that a rotatably mounted axle bolt (5) is inserted in each bore (4). Spannelement nach Anspruch 1, dadurch gekennzeichnet, daß der Achsbolzen (5) einen Führungszapfen (6) besitzt, der mit zwei gegenüberliegenden Abflachungen in Form von Führungsflächen (7) versehen ist.Clamping element according to claim 1, characterized in that the axle pin (5) has a guide pin (6) which is provided with two opposite flats in the form of guide surfaces (7). Spannelement nach Anspruch 1 und 2, dadurch gekennzeichnet, daß der Durchmesser des Führungszapfen (6) kleiner, gleich oder größer als der Durchmesser des Achsbolzens (5) ist.Clamping element according to claims 1 and 2, characterized in that the diameter of the guide pin (6) is smaller, equal to or larger than the diameter of the axle bolt (5). Spannelement nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß der Spannhebel (2) einen Viereck-Querschnitt aufweist und daß an zwei gegenüberliegenden Seiten je eine Führungsnut (8) eingebracht ist, die zu beiden Enden des Spannhebels offen ist und daß der Spannhebel mittels einer Sperrschraube (12) festsetzbar und mittels eines Stiftes (13) in seiner Lage bestimmbar ist.Clamping element according to claims 1 to 3, characterized in that the clamping lever (2) has a square cross-section and that a guide groove (8) is introduced on two opposite sides, which is open at both ends of the clamping lever and that the clamping lever by means of a locking screw (12) can be fixed and its position can be determined by means of a pin (13). Spannelement nach Anspruch 4, dadurch gekennzeichnet, daß die Führungsnut (8) des Spannhebels und die Führungsflächen (7) des Führungszapfens (6) aufeinander abgestimmt sind.Clamping element according to claim 4, characterized in that the guide groove (8) of the clamping lever and the guide surfaces (7) of the guide pin (6) are matched to one another. Spannelement nach den Ansprüchen 1 bis 5, dadurch gekennzeichnet, daß der Gabelkopf (3) mit zwei drehbar gelagerten Achsbolzen (5) in seinen Bohrungen (4) bestückt ist und daß die Führungszapfen (6) der Achsbolzen mit ihren Führungsflächen (7) in den Raum zwischen den Gabeln ragen und daß der Spannhebel (2) in den Gabelkopf einfügbar ist und mit seinen Nuten (8) auf die Führungsflächen (7) aufsetzbar und längsverschiebbar geführt und um die Mittenachse der Achsbolzen (5) kippbar ist.Clamping element according to claims 1 to 5, characterized in that the fork head (3) is equipped with two rotatably mounted axle bolts (5) in its bores (4) and that the guide pins (6) of the axle bolts with their guide surfaces (7) in the Project space between the forks and that the clamping lever (2) can be inserted into the fork head and with its grooves (8) can be placed on the guide surfaces (7) and guided longitudinally and can be tilted about the center axis of the axle bolts (5). Spannelement nach Anspruch 6, dadurch gekennzeichnet, daß der längs verschiebbare und kippbare Spannhebel (2) hydraulisch über Kolben (10) in seine Spannstellung bringbar ist. Clamping element according to claim 6, characterized in that the longitudinally displaceable and tiltable clamping lever (2) can be brought into its clamping position hydraulically via pistons (10). Spannelement nach den Ansprüchen 1 bis 7, dadurch gekennzeichnet, daß der Spannhebel (2) am Spannkopf (18) mit einer Druckschraube (17) bestückt ist.Clamping element according to claims 1 to 7, characterized in that the clamping lever (2) on the clamping head (18) is equipped with a pressure screw (17). Spannelement nach den Ansprüchen 1 bis 8, dadurch gekennzeichnet, daß der Spannhebel (2) im entspannten Zustand in das Gehäuse (1) einfahrbar ist.Clamping element according to claims 1 to 8, characterized in that the clamping lever (2) can be moved into the housing (1) in the relaxed state. Spannelement nach den Ansprüchen 8 und 9, dadurch gekennzeichnet, daß in dem Gehäuse (1) eine Tasche (19) als Freiraum für die am Kopf des Spannhebels (2) befestigte Druckschraube (17) gebildet ist.Clamping element according to claims 8 and 9, characterized in that a pocket (19) is formed in the housing (1) as a space for the pressure screw (17) attached to the head of the clamping lever (2). Spannelement nach den Ansprüchen 1 bis 10, dadurch gekennzeichnet, daß am Gehäuse (1) Sensoren zur Überwachung der Lage des Spannhebels (2) vorgesehen sind.Clamping element according to claims 1 to 10, characterized in that sensors for monitoring the position of the clamping lever (2) are provided on the housing (1).
EP02102507A 2001-11-03 2002-10-29 Clamping device with sliding clamping jaw Expired - Lifetime EP1308244B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10154139A DE10154139A1 (en) 2001-11-03 2001-11-03 Clamping element with sliding clamp
DE10154139 2001-11-03

Publications (3)

Publication Number Publication Date
EP1308244A2 true EP1308244A2 (en) 2003-05-07
EP1308244A3 EP1308244A3 (en) 2006-09-27
EP1308244B1 EP1308244B1 (en) 2009-10-14

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ID=7704584

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02102507A Expired - Lifetime EP1308244B1 (en) 2001-11-03 2002-10-29 Clamping device with sliding clamping jaw

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Country Link
US (1) US6736383B2 (en)
EP (1) EP1308244B1 (en)
AT (1) ATE445483T1 (en)
DE (2) DE10154139A1 (en)

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CN104148965A (en) * 2014-07-31 2014-11-19 扬中市金德纺织机械设备厂 Milling fixture
CN104353880A (en) * 2014-11-05 2015-02-18 重庆和剑机械制造有限公司 Precision machining equipment for lower plane of 1 and 2-gear shift fork of automobile
CN104368853A (en) * 2014-11-05 2015-02-25 重庆和剑机械制造有限公司 Machining equipment for milling upper and lower planes of first and second shifting yokes
CN107717564A (en) * 2017-11-09 2018-02-23 许昌远东传动轴股份有限公司 A kind of centre bore positioning fixture that earhole is bored for slip shaft yoke

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CN107378575B (en) * 2017-08-24 2023-08-22 黄石华旦机械制造有限公司 Tool for cutting crankshaft positioning groove
US11759914B2 (en) 2020-08-06 2023-09-19 Mate Precision Technologies Inc. Vise assembly
US11878381B2 (en) 2020-08-06 2024-01-23 Mate Precision Technologies Inc. Tooling base assembly
CN112077624B (en) * 2020-08-26 2022-08-05 江西昌河航空工业有限公司 Helicopter tail rotor five-fork piece key groove fixing and machining device
CN115179071A (en) * 2022-07-29 2022-10-14 重庆跃进机械厂有限公司 Fork-shaped exhaust rocker arm fixing clamp and fork-shaped exhaust rocker arm machining method

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EP0614729A1 (en) 1993-03-06 1994-09-14 David Fischer Clamping device for clamping workpieces on machinetables or pallets

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Publication number Priority date Publication date Assignee Title
CN104148965A (en) * 2014-07-31 2014-11-19 扬中市金德纺织机械设备厂 Milling fixture
CN104353880A (en) * 2014-11-05 2015-02-18 重庆和剑机械制造有限公司 Precision machining equipment for lower plane of 1 and 2-gear shift fork of automobile
CN104368853A (en) * 2014-11-05 2015-02-25 重庆和剑机械制造有限公司 Machining equipment for milling upper and lower planes of first and second shifting yokes
CN104353880B (en) * 2014-11-05 2016-08-24 重庆和剑机械制造有限公司 A kind of automobile one or two keeps off shift fork lower plane finishing equipment
CN107717564A (en) * 2017-11-09 2018-02-23 许昌远东传动轴股份有限公司 A kind of centre bore positioning fixture that earhole is bored for slip shaft yoke

Also Published As

Publication number Publication date
EP1308244B1 (en) 2009-10-14
DE10154139A1 (en) 2003-05-15
DE50213915D1 (en) 2009-11-26
US6736383B2 (en) 2004-05-18
EP1308244A3 (en) 2006-09-27
ATE445483T1 (en) 2009-10-15
US20030085500A1 (en) 2003-05-08

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