EP0507040A1 - Workpieces holding and clamping device - Google Patents

Workpieces holding and clamping device Download PDF

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Publication number
EP0507040A1
EP0507040A1 EP91810248A EP91810248A EP0507040A1 EP 0507040 A1 EP0507040 A1 EP 0507040A1 EP 91810248 A EP91810248 A EP 91810248A EP 91810248 A EP91810248 A EP 91810248A EP 0507040 A1 EP0507040 A1 EP 0507040A1
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EP
European Patent Office
Prior art keywords
clamping
jaw
workpieces
head
holder
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EP91810248A
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German (de)
French (fr)
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EP0507040B1 (en
Inventor
Fritz Ramseier
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Individual
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Individual
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Priority to DE59106549T priority Critical patent/DE59106549D1/en
Priority to EP19910810248 priority patent/EP0507040B1/en
Publication of EP0507040A1 publication Critical patent/EP0507040A1/en
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    • 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
    • B25B1/00—Vices
    • B25B1/24—Details, e.g. jaws of special shape, slideways
    • B25B1/2405—Construction of the jaws
    • B25B1/241—Construction of the jaws characterised by surface features or material
    • B25B1/2415—Construction of the jaws characterised by surface features or material being composed of a plurality of parts adapting to the shape of the workpiece
    • B25B1/2426—Construction of the jaws characterised by surface features or material being composed of a plurality of parts adapting to the shape of the workpiece the parts having a pivotal movement
    • 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
    • B25B1/00—Vices
    • B25B1/24—Details, e.g. jaws of special shape, slideways
    • B25B1/2405—Construction of the jaws
    • B25B1/241—Construction of the jaws characterised by surface features or material
    • B25B1/2415—Construction of the jaws characterised by surface features or material being composed of a plurality of parts adapting to the shape of the workpiece
    • B25B1/2421—Construction of the jaws characterised by surface features or material being composed of a plurality of parts adapting to the shape of the workpiece the parts having a linear movement

Definitions

  • the present invention relates to a device for holding and clamping workpieces, with a fixed and displaceable clamping jaw arrangement, which is also used in particular for clamping workpieces that are drilled, milled or similarly machined on machine tools.
  • a number of clamping tools are known, which are either manufactured in series or as standard and are suitable for a variety of workpieces, or are manufactured to special customer specifications. What these clamping tools have in common, however, is that they are either only suitable for workpieces of exactly the same dimensions or only for one workpiece at a time. Therefore, if you want to machine workpieces of different dimensions in series, it is necessary to either arrange a series of different clamping tools one behind the other or to clamp one piece at a time.
  • the device according to the invention essentially contains the fixed jaw arrangement 1, which is connected to the base 2 and the displaceable jaw arrangement 3. Between the chuck 4 of the fixed jaw arrangement and a movable head 5 of the displaceable jaw arrangement, there is a workpiece 6.
  • the displacement of the jaw arrangement 3 respectively the clamping is carried out by compressed air, which is available in every workshop and the supply of which is not shown here. Any hydraulic system can be used instead of compressed air.
  • the clamping jaw arrangement moves into play-free guides 7, which are common for such pieces, such as dovetail guides or as a roller table, one part of which is designed in the base 2 and the other part in the carrier plate 8.
  • a tooth plate 9 is fastened on this carrier plate 8, as can be seen in particular from FIG.
  • the jaw holder 10 is adjustably arranged on the tooth plate 9, the underside of which likewise has a toothing 11 which corresponds to that of the tooth plate 9.
  • the tooth plate 9 and the jaw holder provided with the toothing 11 make it possible to change the light width for the workpieces in a very large frame. After roughly adjusting the distance between the chuck 4 and the clamping heads 5, the jaw holder is fastened to the tooth plate by means of screws.
  • the structure of the jaw holder 10 with the movable clamping heads 5 can best be seen in FIGS. 2, 3 and 5.
  • the jaw holder 10 has a length which corresponds to that of the fixed jaw arrangement 1 and contains a number of jaws 14 with the movable clamping heads 5.
  • Each jaw 14 is guided by means of two guide bolts 15, the threaded head 16 of which is screwed into a correspondingly threaded bore 17 in the jaw and which is guided via a guide bushing 18 in the jaw holder 10 and opens into a screw head 19 which is equipped with a slot 20 or the like in order to be able to rotate the guide bolt, the interior of the head resting on a stop 21 which is formed by the transition from the narrower bore 22 to the further bore 23. It can be seen from the arrangement of the guide bolts that these two guide bolts not only guide them per jaw, but also give the possibility of adjusting the length between head and jaw by turning the guide bolts. to change the stop.
  • the stop by means of the guide bolt heads is necessary because the clamping jaws are acted upon by a pressure cylinder 24.
  • the pressure cylinder 24 engages with its rounded head 25 approximately at the height of the workpiece and between the two guide bolts 15 on the clamping jaws and its cylindrical part 26 is guided in a bore 27 which merges into a bore 28 with a larger diameter, so that at the transition a stop 29 for the piston ring 30 is formed.
  • the cylindrical part merges into a handle part 31 at the rear.
  • the pressure medium for example oil, is contained in a closed system which consists of a transverse bore 33 through the jaw holder and the further bore 28 for the pressure cylinder or sealing ring on the cylinder.
  • the transverse bore 33 is closed by two sealed screws 34, while the further bore 28, in which the pressure cylinder is located, is closed by a screw 35.
  • this hydraulic system with which each clamping jaw is individually pressurized, is capable of individually laterally displacing the clamping jaws in a certain area, which is predetermined by the adjustment of the guide bolts, and thus to adapt workpieces of different widths.
  • the degree of filling of the hydraulic system or the path of the guide bolts can be set individually via the guide bolts and is based on empirical values and / or on the workpieces to be clamped.
  • a plastic layer 40 is arranged in the interspaces, the plastic having to be flexible enough not to hinder the movements of the elements.
  • the actual clamping is caused by the displacement of the carrier plate by means of a pressure medium such as compressed air or oil, while the individually displaceable clamping jaws are used to compensate for the different dimensions and shapes of the workpieces.
  • a pressure medium such as compressed air or oil
  • the individually displaceable clamping jaws are used to compensate for the different dimensions and shapes of the workpieces.
  • the number of jaws can vary widely, depending on the purpose of the device.
  • the size of the jaws can of course vary to a large extent.
  • relatively small jaws can be used for a large number of small parts that can be clamped at the same time, or a smaller number of large jaws for relatively large workpieces.
  • a single clamping head does not necessarily have to be used per clamping jaw.
  • Several articulated clamping heads can also be used.
  • the width of the workpiece can vary to a large extent, since the jaw holder with the individual clamping jaws is slidably arranged on the tooth plate 9, so that the clear width between the clamping jaws can be changed in a very large area . It can be seen in particular from FIG. 2 that the carrier plate 8, which serves to clamp the workpieces, always executes only a small displacement movement.
  • the moveable jaws can also be part of the fixed jaw arrangement and the displaceable jaw arrangement has a fixed jaw strip with exchangeable clamping chuck. This optional arrangement is facilitated in that the jaw holder with the movable jaws contain a closed hydraulic system.
  • FIGS. 1-5 a clamping device for processing or a processing sequence of workpieces in processing machines has been described, but the principle of clamping can be described Use with several individually movable clamping jaws for lifting workpieces, where the workpieces must be positioned in a very specific position in order to be able to perform a defined lifting movement.
  • the carrier plate and the tooth plate mounted on it another holder for the jaw holder can be used.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)

Abstract

The device for holding and clamping workpieces has a fixed clamping-jaw arrangement (1) and a clamping-jaw arrangement (3) displaceable relative to the fixed clamping-jaw arrangement (1). The displaceable clamping-jaw arrangement (3) contains a number of clamping jaws (14), each clamping jaw having at least one movable clamping head (5) and being acted upon by a pressure cylinder (24). The pressure cylinders are connected to a closed hydraulic system, and the displaceable clamping-jaw arrangement (3) is acted upon by a second pressure medium. Such a clamping device permits the clamping of several workpieces of different dimensions and irregular shape and is especially suitable for series production on machining automatics but also for lifting workpieces. <IMAGE>

Description

Die vorliegende Erfindung bezieht sich auf eine Vorrichtung zum Halten und Spannen von Werkstücken, mit einer festen und gegenüber diesen verschiebbaren Klemmbackenanordnung, die insbesondere auch zum Spannen von Werkstücken dient, die an Werkzeugmaschinen gebohrt, gefräst oder ähnlich bearbeitet werden. Es sind eine Reihe von Spannwerkzeugen bekannt, die entweder serien- und standardmässig hergestellt werden und für eine Vielfalt von Werkstücken geeignet sind oder auf spezielle Kundenspezifikationen hin angefertigt werden. Gemeinsam ist jedoch diesen Spannwerkzeugen, dass sie entweder nur für Werkstücke genau gleicher Dimensionen geeignet sind oder jeweils nur für ein Werkstück auf einmal. Will man daher Werkstücke unterschiedlicher Dimensionen in Serie bearbeiten, ist es notwendig, entweder eine Serie verschiedener Spannwerkzeuge hintereinander anzuordnen oder jeweils ein Stück nach dem andern einzuspannen.The present invention relates to a device for holding and clamping workpieces, with a fixed and displaceable clamping jaw arrangement, which is also used in particular for clamping workpieces that are drilled, milled or similarly machined on machine tools. A number of clamping tools are known, which are either manufactured in series or as standard and are suitable for a variety of workpieces, or are manufactured to special customer specifications. What these clamping tools have in common, however, is that they are either only suitable for workpieces of exactly the same dimensions or only for one workpiece at a time. Therefore, if you want to machine workpieces of different dimensions in series, it is necessary to either arrange a series of different clamping tools one behind the other or to clamp one piece at a time.

Abgesehen vom Spannen von Werkstücken, die nachher bearbeitet werden, ergeben sich häufig Probleme beim Heben von Werkstücken mit unregelmässigen Abmessungen, die ganz exakt ausgerichtet werden müssen.Apart from clamping workpieces that are subsequently processed, problems often arise when lifting workpieces with irregular dimensions, which have to be aligned exactly.

Es ist davon ausgehend Aufgabe der vorliegenden Erfindung eine Vorrichtung anzugeben, die Werkstücke unterschiedlicher Abmessungen gleichzeitig halten, bzw. spannen kann. Eine solche Vorrichtung ist in den Ansprüchen beschrieben.It is based on the object of the present invention to provide a device which can hold or clamp workpieces of different dimensions at the same time. Such a device is described in the claims.

Die Erfindung wird im folgenden anhand einer Zeichnung eines Ausführungsbeispiels näher erläutert.

  • Figur 1 zeigt in Seitenansicht eine erfindungsgemässe Spannvorrichtung,
  • Figur 2 zeigt die Vorrichtung von Figur 1 in einem Querschnitt,
  • Figur 3 zeigt die Vorrichtung von Figur 1 in einem Längsschnitt,
  • Figur 4 zeigt in einem verkleinerten Massstab die ganze Vorrichtung von Figur 3
  • und Figur 5 zeigt die Vorrichtung in Seitenansicht.
The invention is explained below with reference to a drawing of an embodiment.
  • FIG. 1 shows a tensioning device according to the invention in side view,
  • FIG. 2 shows the device from FIG. 1 in a cross section,
  • FIG. 3 shows the device from FIG. 1 in a longitudinal section,
  • FIG. 4 shows the entire device of FIG. 3 on a reduced scale
  • and Figure 5 shows the device in side view.

Die erfindungsgemässe Vorrichtung enthält im wesentlichen die feste Klemmbackenanordnung 1, die mit der Unterlage 2 verbunden ist und die verschiebbare Klemmbackenanordnung 3. Zwischen dem Futter 4 der festen Klemmbackenanordnung und einem beweglichen Kopf 5 der verschiebbaren Klemmbackenanordnung befindet sich ein Werkstück 6. Die Verschiebung der Klemmbackenanordnung 3, respektive das Spannen wird durch Druckluft ausgeführt, die in jeder Werkstatt vorhanden ist und deren Zuführung hier nicht eingezeichnet ist. Anstatt Druckluft kann irgendein hydraulisches System verwendet werden. Die Klemmbackenanordnung bewegt sich in für solche Stücke übliche spielfreie Führungen 7, wie zum Beispiel Schwalbenschwanzführungen oder als Rolltisch, deren einen Teil in der Unterlage 2 und dessen anderer Teil in der Trägerplatte 8 ausgeführt ist. Auf dieser Trägerplatte 8 ist eine Zahnplatte 9 befestigt, wie insbesondere aus Figur 2 hervorgeht.The device according to the invention essentially contains the fixed jaw arrangement 1, which is connected to the base 2 and the displaceable jaw arrangement 3. Between the chuck 4 of the fixed jaw arrangement and a movable head 5 of the displaceable jaw arrangement, there is a workpiece 6. The displacement of the jaw arrangement 3 , respectively the clamping is carried out by compressed air, which is available in every workshop and the supply of which is not shown here. Any hydraulic system can be used instead of compressed air. The clamping jaw arrangement moves into play-free guides 7, which are common for such pieces, such as dovetail guides or as a roller table, one part of which is designed in the base 2 and the other part in the carrier plate 8. A tooth plate 9 is fastened on this carrier plate 8, as can be seen in particular from FIG.

Auf der Zahnplatte 9 ist der Backenhalter 10 verstellbar angeordnet, dessen Unterseite ebenfalls eine Zahnung 11 aufweist, die derjenigen der Zahnplatte 9 entspricht. Durch die Zahnplatte 9 und dem mit der Zahnung 11 versehenen Backenhalter ist es möglich, die Lichtweite für die Werkstücke in einem sehr grossen Rahmen zu verändern. Nach dem Grobeinstellen des Abstandes zwischen dem Futter 4 und den Klemnköpfen 5 wird der Backenhalter auf der Zahnplatte mittels Schrauben befestigt.The jaw holder 10 is adjustably arranged on the tooth plate 9, the underside of which likewise has a toothing 11 which corresponds to that of the tooth plate 9. The tooth plate 9 and the jaw holder provided with the toothing 11 make it possible to change the light width for the workpieces in a very large frame. After roughly adjusting the distance between the chuck 4 and the clamping heads 5, the jaw holder is fastened to the tooth plate by means of screws.

In Figur 2 ist ausserdem erkennbar, dass das Futter 4 mittels Schrauben 12 auswechselbar an der festen Klemmbacke 1 befestigbar ist. Im Futter 4 sind ferner Anschlagstifte 13 eingeschraubt, die eine bestimmte Einteilung gemäss einem gewünschten Rastermass erlauben.In Figure 2 it can also be seen that the chuck 4 can be exchangeably fastened to the fixed jaw 1 by means of screws 12. Stop pins 13 are also screwed into the chuck 4, which allow a certain division according to a desired grid dimension.

Der Aufbau des Backenhalters 10 mit den beweglichen Klemmköpfen 5 geht am besten aus den Figuren 2, 3 und 5 hervor. Der Backenhalter 10 hat eine Länge, die derjenigen der festen Klemmbackenanordnung 1 entspricht und enthält eine Anzahl von Klemmbacken 14 mit den beweglichen Klemmköpfen 5. In vorliegendem Beispiel gemäss Figur 4 sind es sechs Klemmbacken, doch ist es selbstverständlich, dass es sowohl weniger als auch mehr sein können, doch spielt die Anzahl für das Funktionsprinzip keine Rolle. Jede Klemmbacke 14 wird mittels zweier Führungsbolzen 15 geführt, dessen mit einem Gewinde versehener Kopf 16 in eine entsprechend mit einem Gewinde versehenen Bohrung 17 in der Klemmbacke verschraubt ist und der über eine Führungsbuchse 18 im Backenhalter 10 geführt ist und in einen Schraubenkopf 19 mündet, der mit einem Schlitz 20 oder dergleichen ausgestattet ist, um den Führungsbolzen verdrehen zu können, wobei das Kopfinnere auf einem Anschlag 21 aufliegt, der durch den Uebergang von der engeren Bohrung 22 zur weiteren Bohrung 23 gebildet wird. Aus der Anordnung der Führungsbolzen ist ersichtlich, dass diese beiden Führungsbolzen pro Klemmbacke nicht nur diese führen, sondern auch die Möglichkeit geben, durch Verdrehen der Führungsbolzen die Länge zwischen Kopf und Klemmbacke zu verstellen, d.h. den Anschlag zu verändern.The structure of the jaw holder 10 with the movable clamping heads 5 can best be seen in FIGS. 2, 3 and 5. The jaw holder 10 has a length which corresponds to that of the fixed jaw arrangement 1 and contains a number of jaws 14 with the movable clamping heads 5. In the present example according to FIG. 4, there are six jaws, but it goes without saying that there are both fewer and more may be, but the number does not matter for the principle of operation. Each jaw 14 is guided by means of two guide bolts 15, the threaded head 16 of which is screwed into a correspondingly threaded bore 17 in the jaw and which is guided via a guide bushing 18 in the jaw holder 10 and opens into a screw head 19 which is equipped with a slot 20 or the like in order to be able to rotate the guide bolt, the interior of the head resting on a stop 21 which is formed by the transition from the narrower bore 22 to the further bore 23. It can be seen from the arrangement of the guide bolts that these two guide bolts not only guide them per jaw, but also give the possibility of adjusting the length between head and jaw by turning the guide bolts. to change the stop.

Der Anschlag mittels den Führungsbolzenköpfen ist notwendig, da die Klemmbacken von einem Druckzylinder 24 beaufschlagt sind.The stop by means of the guide bolt heads is necessary because the clamping jaws are acted upon by a pressure cylinder 24.

Der Druckzylinder 24 greift mit seinem abgerundeten Kopf 25 etwa in der Höhe des Werkstückes und zwischen den beiden Führungsbolzen 15 am Klemmbacken an und sein zylindrischer Teil 26 ist in einer Bohrung 27 geführt, die in eine Bohrung 28 mit grösserem Durchmesser übergeht, so dass am Uebergang ein Anschlag 29 für den Kolbenring 30 entsteht. Der zylindrische Teil geht hinten in ein Griffteil 31 über. Das Druckmedium, beispielsweise Oel, ist in einem geschlossenen System enthalten, das aus einer durch den Backenhalter durchgehenden Querbohrung 33 und der weiteren Bohrung 28 für den Druckzylinder, bzw. Dichtungsring am Zylinder besteht. Die Querbohrung 33 wird durch zwei abgedichtete Schrauben 34 verschlossen, während die weitere Bohrung 28, in welcher sich der Druckzylinder befindet, durch eine Schraube 35 abgeschlossen ist. In Figur 4 ist schematisch dargestellt, dass dieses hydraulische System, womit jede Klemmbacke indidivuell unter Druck gesetzt ist, in der Lage ist, die Klemmbacken in einem gewissen, durch das Justieren der Führungsbolzen vorgegebenen Bereich individuell lateral zu verschieben und somit Werkstücken unterschiedlicher Breiten anzupassen. Der Füllungsgrad des hydraulischen Systems, bzw. der Weg der Führungsbolzen kann individuell über die Führungsbolzen eingestellt werden und richtet sich nach Erfahrungswerten und/oder nach den einzuspannenden Werkstücken.The pressure cylinder 24 engages with its rounded head 25 approximately at the height of the workpiece and between the two guide bolts 15 on the clamping jaws and its cylindrical part 26 is guided in a bore 27 which merges into a bore 28 with a larger diameter, so that at the transition a stop 29 for the piston ring 30 is formed. The cylindrical part merges into a handle part 31 at the rear. The pressure medium, for example oil, is contained in a closed system which consists of a transverse bore 33 through the jaw holder and the further bore 28 for the pressure cylinder or sealing ring on the cylinder. The transverse bore 33 is closed by two sealed screws 34, while the further bore 28, in which the pressure cylinder is located, is closed by a screw 35. FIG. 4 shows schematically that this hydraulic system, with which each clamping jaw is individually pressurized, is capable of individually laterally displacing the clamping jaws in a certain area, which is predetermined by the adjustment of the guide bolts, and thus to adapt workpieces of different widths. The degree of filling of the hydraulic system or the path of the guide bolts can be set individually via the guide bolts and is based on empirical values and / or on the workpieces to be clamped.

Im Prinzip wäre es möglich, bereits mit einem solchen Werkzeug mit individuell beaufschlagbaren Klemmbacken eine Anzahl von Werkstücken mit verschiedenen Dimensionen einzuspannen, wobei jedoch die einzuspannenden Flächen untereinander parallel sein müssten. Um jedoch auch Werkstücke einspannen zu können, deren Spannflächen nicht parallel zueinander stehen, sind Mittel vorgesehen, sich diesen nicht-parallelen Flächen anzupassen. Diese Mittel enthalten den beweglichen Klemmkopf 5, der in vorliegendem Ausführungsbeispiel in der horizontalen Ebene über einer bogenförmigen Schwalbenschwanz-Führung (siehe Figuren 2 und 3) 36 an der Klemmbacke 14 angeordnet ist. Der Klemmkopf weist, ebenso wie das feste Klemmbackenfutter 4, einen Absatz 37, bzw. 38 zur Aufnahme der Werkstücke auf. Die Funktion des beweglichen Klemmkopfes 5 geht am besten aus Figur 4 hervor, wobei insbesondere aus der Klemmbacke 14 d hervorgeht, dass damit nicht-parallele Werkstücke gespannt werden können. Sowohl die bewegliche Befestigung des Klemmkopfes an der Klemmbacke als auch dessen Klemmseite 39 können für unterschiedliche Werkstücke unterschiedlich gefertigt sein, abgesehen vom verwendeten Material, das in der Regel gehärteter Stahl oder dergleichen sein wird, aber in Ausnahmefällen auch aus Kunststoff bestehen kann, falls es sich um verletzliche Werkstücke handelt.In principle, it would be possible to clamp a number of workpieces with different dimensions using such a tool with individually actuated clamping jaws, but the surfaces to be clamped would have to be parallel to one another. However, in order to also be able to clamp workpieces, their clamping surfaces are not parallel to each other, means are provided to adapt to these non-parallel surfaces. These means contain the movable clamping head 5, which in the present exemplary embodiment is arranged on the clamping jaw 14 in the horizontal plane above an arcuate dovetail guide (see FIGS. 2 and 3) 36. The clamping head, like the fixed clamping jaw chuck 4, has a shoulder 37 or 38 for receiving the workpieces. The function of the movable clamping head 5 can best be seen in FIG. 4, it being clear from the clamping jaw 14 d in particular that non-parallel workpieces can be clamped with it. Both the movable attachment of the clamping head to the clamping jaw as well as its clamping side 39 can be made differently for different workpieces, apart from the material used, which will usually be hardened steel or the like, but in exceptional cases can also be made of plastic if it is are vulnerable workpieces.

Um das Eindringen von Schmutz, bzw. Spänen und dergleichen zwischen die einzelnen Klemmbacken und Klemmköpfe zu verhindern, ist in den Zwischenräumen eine Kunststofflage 40 angeordnet, wobei der Kunststoff nachgiebig genug sein muss, um die Bewegungen der Elemente nicht zu behindern.In order to prevent the ingress of dirt or chips and the like between the individual clamping jaws and clamping heads, a plastic layer 40 is arranged in the interspaces, the plastic having to be flexible enough not to hinder the movements of the elements.

Wie aus der Beschreibung der beweglichen Klemmbacken-Anordnung hervorgeht, wird das eigentliche Spannen durch die Verschiebung der Trägerplatte mittels einem Druckmedium wie Druckluft oder Oel bewirkt, während die individuell verschiebbaren Klemmbacken für den Ausgleich der unterschiedlichen Dimensionen und Formen der Werkstücke besorgt sind. Wie bereits erwähnt, kann die Anzahl der Klemmbacken in einem grossen Umfang variieren, je nach dem Verwendungszweck der Vorrichtung.As can be seen from the description of the movable clamping jaw arrangement, the actual clamping is caused by the displacement of the carrier plate by means of a pressure medium such as compressed air or oil, while the individually displaceable clamping jaws are used to compensate for the different dimensions and shapes of the workpieces. As already mentioned, the number of jaws can vary widely, depending on the purpose of the device.

Ausserdem kann selbstverständlich auch die Grösse der Klemmbacken in einem grossen Umfang variieren. So können beispielsweise relativ kleine Klemmbacken für eine grosse Anzahl von kleinen Teilen, die gleichzeitig gespannt werden können, verwendet werden, oder eine geringere Anzahl grosser Klemmbacken für relativ grosse Werkstücke. Ausserdem muss nicht notwendigerweise ein einzelner Klemmkopf pro Klemmbacke verwendet werden. Es können auch mehrere gegliederte Klemmköpfe verwendet werden.In addition, the size of the jaws can of course vary to a large extent. For example, relatively small jaws can be used for a large number of small parts that can be clamped at the same time, or a smaller number of large jaws for relatively large workpieces. In addition, a single clamping head does not necessarily have to be used per clamping jaw. Several articulated clamping heads can also be used.

Wie insbesondere aus Figur 2 hervorgeht, kann auch die Breite des Werkstückes in einem grossen Umfange variieren, da der Backenhalter mit den einzelnen Klemmbacken auf der Zahnplatte 9 verschiebbar angeordnet ist, so dass die lichte Weite zwischen den Klemmbacken in einem sehr grossen Bereich verändert werden kann. Insbesondere aus Figur 2 geht hervor, dass die Trägerplatte 8, die dem Spannen der Werkstücke dient, stets nur eine kleine Verschiebebewegung ausführt.As can be seen in particular from Figure 2, the width of the workpiece can vary to a large extent, since the jaw holder with the individual clamping jaws is slidably arranged on the tooth plate 9, so that the clear width between the clamping jaws can be changed in a very large area . It can be seen in particular from FIG. 2 that the carrier plate 8, which serves to clamp the workpieces, always executes only a small displacement movement.

Während beim Ausführungsbeispiel gemäss den Figuren 1 bis 5 der Klemmbackenhalter mit dem beweglichen Klemmbacken als Teil der verschiebbaren Klemmbackenanordnung beschrieben und gezeichnet wurde, können die beweglichen Klemmbacken auch Teil der festen Klemmbackenanordnung sein und die verschiebbare Klemmbackenanordnung eine feste Klemmbackenleiste mit auswechselbarem Klemmfutter aufweisen. Diese wahlweise Anordnung wird dadurch erleichtert, dass der Klemmbackenhalter mit den beweglichen Klemmbacken ein geschlossenes Hydrauliksystem enthalten.While in the exemplary embodiment according to FIGS. 1 to 5 the jaw holder with the movable jaw was described and drawn as part of the displaceable jaw arrangement, the moveable jaws can also be part of the fixed jaw arrangement and the displaceable jaw arrangement has a fixed jaw strip with exchangeable clamping chuck. This optional arrangement is facilitated in that the jaw holder with the movable jaws contain a closed hydraulic system.

Im Ausführungsbeispiel der Figuren 1 - 5 wurde eine Spannvorrichtung für eine Bearbeitung oder eine Bearbeitungsfolge von Werkstücken in Bearbeitungsmaschinen beschrieben, doch lässt sich das Prinzip des Spannens mit mehreren individuell verschiebbaren Klemmbacken auch für das Heben von Werkstücken anwenden, bei welchen die Werkstücke in einer ganz bestimmten Lage positioniert sein müssen, um eine definierte Hubbewegung durchführen zu können. Dabei kann statt der Trägerplatte und der darauf montierten Zahnplatte eine andere Halterung für den Backenhalter verwendet werden.In the exemplary embodiment in FIGS. 1-5, a clamping device for processing or a processing sequence of workpieces in processing machines has been described, but the principle of clamping can be described Use with several individually movable clamping jaws for lifting workpieces, where the workpieces must be positioned in a very specific position in order to be able to perform a defined lifting movement. Instead of the carrier plate and the tooth plate mounted on it, another holder for the jaw holder can be used.

Claims (9)

Vorrichtung zum Halten und Spannen von Werkstücken, mit einer festen (1) und einer gegenüber diesen verschiebbaren Klemmbackenanordnung (3), dadurch gekennzeichnet, dass eine der Klemmbackenanordnungen (1, 3) mindestens zwei Klemmbacken (14) enthält und jede Klemmbacke mindestens einen beweglichen Klemmkopf (5) aufweist und von einem Druckzylinder (24) beaufschlagt wird, wobei die Druckzylinder mit einem geschlossenen Hydrauliksystem in Verbindung stehen, und die verschiebbare Klemmbackenanordnung (3) von einem zweiten Druckmedium beaufschlagbar ist.Device for holding and clamping workpieces, with a fixed (1) and a clamping jaw arrangement (3) which is displaceable relative thereto, characterized in that one of the clamping jaw arrangements (1, 3) contains at least two clamping jaws (14) and each clamping jaw has at least one movable clamping head (5) and is acted upon by a pressure cylinder (24), the pressure cylinders being connected to a closed hydraulic system, and the displaceable clamping jaw arrangement (3) can be acted upon by a second pressure medium. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die einzelnen Klemmbacken (14) mittels Führungsbolzen (15) in einem Backenhalter (10) geführt sind, wobei der Führungsbolzen einen mit Gewinde (16) versehenen Kopf, der in eine entsprechende Bohrung (17) in der Klemmbacke (14) verschraubt ist aufweist, und dessen anderes Ende in einen Schraubenkopf (19) mündet, der in einem Gewinde im Backenhalter (10) verstellbar angeordnet ist und dessen Mittelteil in einer Führungsbuchse (18) geführt ist, wobei das Schraubenkopfinnere auf einem Anschlag (21) aufliegt, der in der Bohrung in der Klemmbacke gebildet ist.Apparatus according to claim 1, characterized in that the individual clamping jaws (14) are guided in a jaw holder (10) by means of guide bolts (15), the guide bolt having a threaded head (16) which fits into a corresponding bore (17) in the jaw (14) is screwed, and the other end opens into a screw head (19) which is adjustably arranged in a thread in the jaw holder (10) and the middle part of which is guided in a guide bush (18), the screw head inside on one Stop (21) rests, which is formed in the bore in the jaw. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das geschlossene Hydrauliksystem im Backenhalter (10) angeordnet ist und eine durch diesen durchgehende und verschliessbare Querbohrung (33) aufweist, von der die die Druckzylinder (24) aufnehmenden weiteren Bohrungen (28) abzweigen, die in engere Druckbohrungen (27) münden und am Uebergang je einen Absatz (29) bilden, der als Anschlag für den Dichtungsring (30) am Druckzylinder dient.Device according to claim 1 or 2, characterized in that the closed hydraulic system is arranged in the jaw holder (10) and has a transverse bore (33) which can be closed and closed therefrom and from which the further bores (28) receiving the pressure cylinders (24) branch off, that open into narrower pressure bores (27) and each form a shoulder (29) at the transition, which serves as a stop for the sealing ring (30) on the pressure cylinder. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Klemmkopf (5) über eine gekrümmte Schwalbenschwanzführung (36) beweglich an der Klemmbacke (14) befestigt ist.Device according to one of claims 1 to 3, characterized in that the clamping head (5) is movably attached to the clamping jaw (14) via a curved dovetail guide (36). Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Backenhalter (10) verschieb- und einstellbar gegenüber einer Trägerplatte angeordnet ist, wobei die Unterseite des Backenhalters (10) eine Zahnung (11) aufweist, die mit einer entsprechenden Zahnung an einer an der Trägerplatte (8) befestigten Zahnplatte (9) zusammenarbeitet, und der Backenhalter mittels Schrauben an der Zahnplatte befestigbar ist.Device according to one of claims 1 to 4, characterized in that the jaw holder (10) is arranged displaceably and adjustably with respect to a carrier plate, the underside of the jaw holder (10) having a toothing (11) with a corresponding toothing on a tooth plate (9) fastened to the carrier plate (8) works together, and the jaw holder can be fastened to the tooth plate by means of screws. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass der Backenhalter (10) in der verschiebbaren Klemmbackenanordnung (3) befestigt ist und die Trägerplatte (8) mit einem Druckmedium beaufschlagbar ist.Apparatus according to claim 5, characterized in that the jaw holder (10) is fastened in the displaceable clamping jaw arrangement (3) and the carrier plate (8) can be acted upon by a pressure medium. Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass an der Klemmbackenanordnung (1, 3), die keine beweglichen Klemmbacken (14) aufweist, ein auswechselbares Klemmfutter (4) befestigt ist, das einen Absatz (38) zur Aufnahme von Werkstücken aufweist, dem ein entsprechender Absatz (37) am Klemmkopf (5) entspricht.Device according to one of claims 1 to 6, characterized in that an interchangeable clamping chuck (4) is fastened to the clamping jaw arrangement (1, 3), which has no movable clamping jaws (14), which has a shoulder (38) for receiving workpieces has a corresponding shoulder (37) on the clamping head (5). Vorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass das Klemmfutter (4) eine Anzahl Bohrungen zur Aufnahme von Anschlagstiften (13) aufweist.Device according to one of claims 1 to 7, characterized in that the clamping chuck (4) has a number of bores for receiving stop pins (13). Vorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass zwischen den einzelnen Klemmbacken (14a - f) und Klemmköpfen (5) eine Abdichtung (40) angeordnet ist.Device according to one of claims 1 to 8, characterized in that a seal (40) is arranged between the individual clamping jaws (14a-f) and clamping heads (5).
EP19910810248 1991-04-04 1991-04-04 Workpieces holding and clamping device Expired - Lifetime EP0507040B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE59106549T DE59106549D1 (en) 1991-04-04 1991-04-04 Device for holding and clamping workpieces.
EP19910810248 EP0507040B1 (en) 1991-04-04 1991-04-04 Workpieces holding and clamping device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19910810248 EP0507040B1 (en) 1991-04-04 1991-04-04 Workpieces holding and clamping device

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EP0507040A1 true EP0507040A1 (en) 1992-10-07
EP0507040B1 EP0507040B1 (en) 1995-09-20

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6345816B1 (en) 2000-05-11 2002-02-12 Snap Jaws Manufacturing Co. Hydraulic vise jaws
WO2005049278A1 (en) * 2003-11-21 2005-06-02 Hainbuch Gmbh Spannende Technik Clamping jaws and clamping device for clamping workpieces
CN108161783A (en) * 2017-12-29 2018-06-15 郑州速达煤炭机械服务股份有限公司 A kind of multipurpose pressing device

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Publication number Priority date Publication date Assignee Title
CN106944843A (en) * 2017-03-14 2017-07-14 成都亨通兆业精密机械有限公司 A kind of boring fastening localization method of special-shaped workpiece
CN117300686B (en) * 2023-11-28 2024-02-20 山西昌鸿电力器材有限公司 Auxiliary positioning device and positioning method for electric power fitting punching

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US2411790A (en) * 1943-10-22 1946-11-26 Baron Cyril David Woolf Workpiece holder
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US4284267A (en) * 1980-03-26 1981-08-18 Dennis M. Thayer Variable contour vice jaw
DE3201891A1 (en) * 1981-03-12 1982-10-21 Wilhelm 4322 Sprockhövel Vogelbruch Hydraulic clamping device
EP0115474A2 (en) * 1983-02-01 1984-08-08 Roger Gloor Accessory device for machine vices
EP0234677A1 (en) * 1986-01-08 1987-09-02 Tai-Her Yang Clamping device
US4743003A (en) * 1987-03-09 1988-05-10 Dietlein Robert W Ski vise with rotating jaws

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD16907U (en) *
DE377706C (en) * 1918-02-13 1923-06-25 James Henry Jerrim Vice for machine tools
US2411790A (en) * 1943-10-22 1946-11-26 Baron Cyril David Woolf Workpiece holder
DE1920616U (en) * 1961-01-13 1965-07-29 Planeta Veb Druckmasch Werke WORKPIECE CLAMP.
US4284267A (en) * 1980-03-26 1981-08-18 Dennis M. Thayer Variable contour vice jaw
DE3201891A1 (en) * 1981-03-12 1982-10-21 Wilhelm 4322 Sprockhövel Vogelbruch Hydraulic clamping device
EP0115474A2 (en) * 1983-02-01 1984-08-08 Roger Gloor Accessory device for machine vices
EP0234677A1 (en) * 1986-01-08 1987-09-02 Tai-Her Yang Clamping device
US4743003A (en) * 1987-03-09 1988-05-10 Dietlein Robert W Ski vise with rotating jaws

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6345816B1 (en) 2000-05-11 2002-02-12 Snap Jaws Manufacturing Co. Hydraulic vise jaws
WO2005049278A1 (en) * 2003-11-21 2005-06-02 Hainbuch Gmbh Spannende Technik Clamping jaws and clamping device for clamping workpieces
CN108161783A (en) * 2017-12-29 2018-06-15 郑州速达煤炭机械服务股份有限公司 A kind of multipurpose pressing device

Also Published As

Publication number Publication date
EP0507040B1 (en) 1995-09-20
DE59106549D1 (en) 1995-10-26

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