EP0254741B1 - Device for retaining and handling a flat object - Google Patents

Device for retaining and handling a flat object Download PDF

Info

Publication number
EP0254741B1
EP0254741B1 EP87901052A EP87901052A EP0254741B1 EP 0254741 B1 EP0254741 B1 EP 0254741B1 EP 87901052 A EP87901052 A EP 87901052A EP 87901052 A EP87901052 A EP 87901052A EP 0254741 B1 EP0254741 B1 EP 0254741B1
Authority
EP
European Patent Office
Prior art keywords
clamping jaw
frame
flat
movable clamping
groove
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
EP87901052A
Other languages
German (de)
French (fr)
Other versions
EP0254741A1 (en
Inventor
René Büchler
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.)
Mecatool AG
Original Assignee
BUECHLER B-SET AG
Buechler B-Set AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BUECHLER B-SET AG, Buechler B-Set AG filed Critical BUECHLER B-SET AG
Priority to AT87901052T priority Critical patent/ATE59320T1/en
Publication of EP0254741A1 publication Critical patent/EP0254741A1/en
Application granted granted Critical
Publication of EP0254741B1 publication Critical patent/EP0254741B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B25B1/00—Vices
    • B25B1/24—Details, e.g. jaws of special shape, slideways
    • B25B1/2489—Slideways
    • 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
    • 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
    • B25B5/02—Clamps with sliding jaws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/10—Arrangements for positively actuating jaws using screws
    • B25B5/109—Arrangements for positively actuating jaws using screws with two screws, e.g. parallel screw clamps
    • 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
    • B25B5/16—Details, e.g. jaws, jaw attachments

Definitions

  • the invention relates to a device for holding and handling a flat object, in particular for holding a flat workpiece on a machine tool according to the preamble of claim 1.
  • Such a device is known from US-A-3,665,986. It is a clamping table for holding doors, which has a closed, rectangular, flat frame, one side of which is designed as a fixed jaw due to its L-shaped profile. A bar, which is also provided with an L-shaped profile, can be inserted from the outside into the frame, is guided in it and thus forms a movable clamping jaw that can be braced against the flat object. On the end faces of this movable jaw, the associated frame parts overlapping, screw clamp-like clamping means are provided for clamping the movable jaw on the frame. Finally, a threaded rod with an actuating lever, which acts on the frame and on the movable clamping jaw, is provided, which serves as a clamping means acting on the movable clamping jaw.
  • FR-A-2,503.009 shows a similar clamping frame, in which there are screws in threaded bores in the frame side opposite the fixed jaw, which act as clamping means on the movable clamping jaw.
  • a device has already become known which is also said to be suitable for holding flat workpieces for machining on a machine tool (Tech. Rundschau 1.86, workshop, accessories for wire EDM machines). It is built in the manner of an adjustable wrench, a so-called English, and also has similarities to a vice.
  • This device has the important disadvantage that it represents a system that is open on one side and is therefore not able to clamp a workpiece without play and distortion. Since certain machining processes, such as electrical spark erosion, require a play-free maintenance of a workpiece position that is set with high precision and free of tension during machining, the use of the known device is not very useful in such cases.
  • the object of the invention is therefore to improve the generic device in such a way that it allows fast, tension-free and play-free clamping of the objects for the purpose of precision machining of flat objects.
  • the respective machining process should not be obstructed by parts of the device if possible.
  • the preset processing position of the object is to be ensured in successive operations on the firmly clamped object on changing processing machines, automatic handling or transport between the different processing machines should also be possible.
  • the object of the invention is achieved in the generic device by the features specified in the characterizing part of claim 1.
  • Advantageous refinements and developments of the invention can be found in the subclaims.
  • the device according to the invention which is also referred to below as a "frame clamp", enables a precise, tension-free and play-free mounting of the flat object in a rigid, closed system and can therefore be used particularly advantageously for machining operations that require extreme precision.
  • the device represents a relatively simple construction, the parts of which, in particular the movable jaw, are easily interchangeable. This allows a quick adaptation to different types and contours of objects to be obtained.
  • Another significant advantage of the device according to the invention is that it enables unhindered processing of the object clamped in it to its outer contour, so that it can also be completely separated if necessary, without the separate parts being able to change their position.
  • the respective flat object can be a workpiece to be machined or a tool.
  • the flat object can represent a sinking electrode during spark erosion, which is clamped in the box clamp and fastened to a sinking EDM machine.
  • the box clamp can also be used to "palletize" high-precision clamped objects, in particular workpieces. If you want to carry out a sequence of machining operations on different machines while maintaining the required workpiece position with respect to a reference point on a presetting station, you can simply clamp the box clamp and workpiece on the different machines without changing the relative position of the workpiece in relation to the reference system . This gives a high repeat accuracy of a defined machining position of the workpiece each time a new work step begins.
  • Claims 8 and 9 offer the possibility of automatically handling the box clamp and combining it with other handling devices according to the applicant's earlier patent applications.
  • the device shown in Fig. 1 has a closed, rectangular, flat frame 1, one (on the right in Fig. 1) transverse side is designed as a fixed jaw 1.1. Furthermore, the device has a movable clamping jaw 1.3, which can be inserted into the frame from the outside and is guided on its longitudinal sides 1.2. The clamping jaw 1.3 can be clamped on the long sides 1.2 of the frame 1 and it can be clamped against a flat object W to be held (cf. also FIGS. 2 to 4).
  • clamping means 1.5 acting on the movable clamping jaw 1.3, which in the present embodiment consists of three screw bolts 1.5.1, each inserted in a threaded bore 1.4.1 of the left-hand transverse side 1.4.
  • hydraulically or pneumatically actuated pressure drives can also be used as clamping means 1.5.
  • the rigid frame 1 and the precise guidance of the movable clamping jaw 1.3 enable precise, play-free and distortion-free clamping of the flat object W to be held.
  • the movable clamping jaw 1.3 essentially has the shape of a cuboid, which is provided with a groove 1.3.1 on both of its smallest side faces.
  • the respective groove base 1.3.2 has an arcuate course (cf. dashed lines in FIGS. 1 and 4).
  • the arcuate course of the groove base 1.3.2 of the two opposite grooves is designed in such a way that one groove (upper groove in FIG. 1) has a deep incision in the direction from the workpiece side, which decreases steadily towards the clamping device side, while the bottom of the other groove (bottom in FIG.
  • the two grooved ends of the movable jaw 1.3 are each split by a slot 1.3.3 in two prongs 1.3.4 (Fig. 3).
  • the slots 1.3.3 each extend from the center line of each groove base 1.3.2 parallel to the largest side surface of the movable clamping jaw 1.3 towards the center thereof. They therefore run approximately in the center plane of the frame 1.
  • the respectively associated tines 1.3.4 on both sides of the clamping jaw 1.3 can spring slightly towards one another due to the slot 1.3.3 forming them and are therefore braced on the guide bar 1.2.1 of the respective longitudinal frame side 1.2 .
  • Each pair of associated tines 1.3.4 has a hole with a common axis running perpendicular to the slot plane.
  • the hole 1.3.5 in one prong is a through hole with smooth walls.
  • the other coaxial 1.3.6 hole in the other prong 1.3.4 is a threaded hole.
  • the pairs of associated tines 1.3.4, each of which clasp the guide bar 1.2.1 on the inside of the facing longitudinal side 1.2 of the frame, can then each interact with the threaded bore 1.3.6 the countersunk screw 1.3.7 is pressed against the guide bar 1.2.1 and clamped there without play (cf. in particular Fig. 2).
  • the pairs of associated tines 1.3.4 can also be clamped to the associated guide bar 1.2.1 by means of a pressure drive with hydraulic or pneumatic actuation.
  • the movable clamping jaw 1.3 can also be designed with a pressure side which is inclined at an angle to the longitudinal sides 1.2 of the frame.
  • the surfaces of the clamping jaws 1.1 and 1.3 and also those of the longitudinal sides 1.2 of the frame, which come into contact with the side surfaces of the object W, can be designed as special profiles 1.6, as shown in FIG Fig. 4 is shown for a simple example with a circular contour.
  • Fig. 1 also shows that the surfaces facing the workpiece W of the fixed jaw 1.1, the movable jaw 1.3 and the guide rails 1.2.1 have incised grooves 1.7, which here has a semicircular cross section and which are perpendicular to the frame plane.
  • the grooves can also have another shape, for example a triangular cross section.
  • the effective contact surfaces are reduced by these grooves 1.7. However, this makes it possible to keep these contact surfaces cleaner and in particular waste items, dirt such as To remove metal chips etc.
  • the wire electrode can also be threaded into these grooves.
  • the width of the grooves 1.3.1 is adapted to the width of the guide strips 1.2.1 and in such a way that when the countersunk screw 1.3.7 is not firmly tightened, the movable clamping jaw is slightly displaced relative to the frame can, but it is firmly clamped to the guide bar 1.2.1 when the countersunk screw 1.3.7 is tightened.
  • 5 shows a first example of use of the device according to the invention for the purpose of automated handling of a tightly clamped flat object W when it is processed by the wire electrode D of a wire EDM, not shown, in a handling system 2 with a flat slide 2.1 which can be moved in X, Y coordinates according to an earlier patent application by the applicant.
  • 5 shows one of two grooves 2.1.1 each formed on the two long sides of the flat slide 2.1.
  • the visible front groove 2.1.1 has a trapezoidal cross-sectional area.
  • the other groove (not visible in FIG. 5) is provided with a triangular cross-sectional area.
  • the two edge surfaces of the adjacent flat slide side, which are close to the grooves 2.1.1, are designed as finely or precisely machined guide surfaces, while the front groove 2.1.1 has a surface that has been created by milling and is less precisely dimensioned.
  • the flat slide 2.1 is guided along the guide jaws of a mobile base 2.2 using the grooves 2.1.1, of which only one 2.2.1 is visible in FIG. 5.
  • the guide jaw 2.2.1 engaging in the front groove 2.1.1 is provided with a locking device 2.2.2 for locking the flat slide 2.1.
  • the base 2.2 can in turn be displaced at right angles to the direction of movement of the flat slide 2.1 by means of guide jaws 2.3, these guide jaws 2.2.3 in turn being guided with grooves 2.3.1 of the type described as a beam 2.3.
  • the bar 2.3 directed transversely to the flat slide 2.1 is mounted on a frame 2.4.
  • the flat slide 2.1 is connected by means of fastening screws 2.1.2 and adjusting screws 2.1.3 to the fixed jaw 1.1 of the box clamp according to FIG. 1.
  • a further possibility for the fine adjustment of the flat slide 2.1 with regard to its unimpeded displaceability or precise guidance between the guide jaws 2.2.1 of the mobile base 2.2 is provided by an essentially U-shaped slot 2.1.4, which is then attached to the area of the fastening and adjusting screws 2.1.2 and 2.1.3 is formed in the flat slide 2.1.
  • a threaded hole (not visible in FIG. 5) is machined into the flat slide 2.1, which on both sides of the U-shaped slot 2.1.4 starts in opposite directions from one leg of the same into the groove 2.1 .1 open on the respective closer longitudinal side of the flat slide 2.1.
  • a box clamp of a similar type is also shown. It is mounted on a pallet 1.9 using holes 1.8 provided in frame 1 and screws 1.8.1 inserted into them.
  • the pallet 1.9 has the purpose Handling grooves 1.9.1, which are similar to the grooves 2.1.1 of the flat carriage 2.1 according to FIG. 5.
  • FIG. 7 shows the use of a box clamp according to FIGS. 1 to 3 in a further handling system 10, which permits processing of an object W clamped in the box clamp from both sides, regardless of whether this object is flat or on both sides the box clamp protrudes.
  • the handling system is based on the arrangement according to FIG. 5. Accordingly, the box clamp is mounted on a flat slide 12.1 and this is arranged with lateral grooves 12.1.1 between guide jaws 12.2.1 on the upper longitudinal edges of a mobile base 12.2. In this case, two slots 12.1.4 are provided in the flat slide 12.1, which run obliquely from the central area of the flat slide 12.1 and each extend to the corresponding groove 12.1.1 via a kink.
  • the pedestal 12.2 is then guided by means of further guide jaws 12.2.4 of the same type provided on its lower longitudinal edges in a pair of grooves 12.3.1 which run along the upper longitudinal edges of a bar 12.3 aligned parallel to the movement of the flat slide 12.1 and with regard to their cross-sectional areas and Surface texture are movable to play the grooves 12.1.1 of the flat slide 12.1.
  • the beam 12.3 used to guide the base 12.2 in parallel is also provided with a pair of grooves 12.3.2 machined in its lower longitudinal edges, which correspond to those 12.1.1 of the flat slide 12.1 with regard to their cross-sectional area and surface quality.
  • the flat slide 2.1 in the arrangement according to FIG. 5 can thus be replaced by a circular cylindrical shaft which can be guided in a housing and is limited in terms of its axial and rotational movements.
  • the flat slide 12.1 of the arrangement according to FIGS. 7 and 5 could finally be designed similarly to the beam 12.3 used for parallel guidance with a cross section corresponding to the beam 12.3 and also with four grooves identical to those of the beam. Such a slide would then also be insertable between the guide jaws 12.2.1 of the base 12.2 in a position rotated by 180 ° about its longitudinal axis.

Landscapes

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

Abstract

A device for retaining and handling a flat object (W), which can be a workpiece to be machined or a machining tool, clamps the object between a fixed clamping jaw (1.1) and a mobile clamping jaw (1.3). The device has a closed, rectangular, flat frame (1), one side of of which forms the fixed clamping jaw (1.1). A mobile clamping jaw (1.3) can be fitted from the outside in the frame (1) and is movable therein. It is provided with means (1.3.5, 1.3.6 and 1.3.7) for clamping it to the frame (1) and can be braced against the flat object (W). At least one bracing means (1.5) acting upon the mobile clamping jaw (1.3) is arranged on the side (1.4) of the frame (1) facing the fixed clamping jaw (1.1). The device allows the flat object to be tightened without any play or backlash. It is particularly appropriate for precision machining carried out in one or several successive operations, during which a predetermined machining position of the object is maintained.

Description

Die Erfindung bezieht sich auf eine Vorrichtung zur Halterung und Handhabung eines flachen Gegenstandes, insbesondere zur Halterung eines flachen Werkstückes an einer Werkzeugmaschine gemäß dem Oberbegriff des Patentanspruches 1.The invention relates to a device for holding and handling a flat object, in particular for holding a flat workpiece on a machine tool according to the preamble of claim 1.

Eine derartige Vorrichtung ist aus der US-A-3,665,986 bekannt. Es handelt sich dort um einen Spanntisch zum Halten von Türen, der einen geschlossenen, rechteckigen, flachen Rahmen besitzt, dessen eine Seite durch ihr L-förmiges Profil als feststehende Klemmbacke ausgebildet ist. Eine ebenfalls mit eine L-förmigen Profil versehene Leiste kann von außen in den Rahmen eingesetzt werden, ist in diesem geführt und bildet damit eine gegen den flachen Gegenstand verspannbare, bewegliche Klemmbacke. An den Stirnseiten dieser beweglichen Klemmbacke sind die zugeordneten Rahmenteile übergreifende, schraubzwingenartige Klemmittel vorgesehen, zum Festklemmen der beweglichen Klemmbacke am Rahmen. Schließlich ist eine am Rahmen und an der beweglichen Klemmbacke angreifende Gewindestange mit Betätigungshebel vorgesehen, die als auf die bewegliche Klemmbacke einwirkendes Spannmittel dient.Such a device is known from US-A-3,665,986. It is a clamping table for holding doors, which has a closed, rectangular, flat frame, one side of which is designed as a fixed jaw due to its L-shaped profile. A bar, which is also provided with an L-shaped profile, can be inserted from the outside into the frame, is guided in it and thus forms a movable clamping jaw that can be braced against the flat object. On the end faces of this movable jaw, the associated frame parts overlapping, screw clamp-like clamping means are provided for clamping the movable jaw on the frame. Finally, a threaded rod with an actuating lever, which acts on the frame and on the movable clamping jaw, is provided, which serves as a clamping means acting on the movable clamping jaw.

Die FR-A-2,503,009 zeigt einen ähnlichen Spannrahmen, bei der in der der feststehenden Klemmbacke gegenüberliegenden Rahmenseite Schrauben in Gewindebohrungen vorhanden sind, die als Spannmittel auf die bewegliche Klemmbacke einwirken.FR-A-2,503.009 shows a similar clamping frame, in which there are screws in threaded bores in the frame side opposite the fixed jaw, which act as clamping means on the movable clamping jaw.

Es ist bereits eine Vorrichtung bekannt geworden, die auch zum Festhalten flacher Werkstücke für eine Bearbeitung auf einer Werkzeugmaschine geeignet sein soll (Tech. Rundschau 1.86, Werkstatt, Zubehör für Drahterodiermaschinen). Sie ist nach Art eines einstellbaren Schraubenschlüssels, eines sog. Engländers, gebaut und hat auch Ähnlichkeiten mit einem Schraubstock. Dieser Vorrichtung haftet indessen der gewichtige Nachteil an, daß sie ein einseitig offenes System darstellt und daher nicht im Stande ist, ein Werkstück spiel- und verzugsfrei festzuklemmen. Da bei gewissen Bearbeitungsprozessen, wie beispielsweise der elektrischen Funkenerosion, eine spielfreie Beibehaltung einer mit hoher Präzision spannungsfrei eingestellten Werkstückposition während der Bearbeitung erforderlich ist, ist der Einsatz der bekannten Vorrichtung in solchen Fällen wenig sinnvoll.A device has already become known which is also said to be suitable for holding flat workpieces for machining on a machine tool (Tech. Rundschau 1.86, workshop, accessories for wire EDM machines). It is built in the manner of an adjustable wrench, a so-called English, and also has similarities to a vice. This device, however, has the important disadvantage that it represents a system that is open on one side and is therefore not able to clamp a workpiece without play and distortion. Since certain machining processes, such as electrical spark erosion, require a play-free maintenance of a workpiece position that is set with high precision and free of tension during machining, the use of the known device is not very useful in such cases.

Aufgabe der Erfindung ist es daher, die gattungsgemäße Vorrichtung dahingehend zu verbessern, daß sie zum Zwecke einer Präzisionsbearbeitung von flachen Gegenständen ein rasches, spannungs- und spielfreies Festspannen der Gegenstände gestattet. Zusätzlich soll der jeweilige Bearbeitungsvorgang durch Teile der Vorrichtung möglichst nicht behindert werden. Weiterhin soll bei aufeinanderfolgenden Arbeitsgängen an dem fest gespannten Gegenstand auf wechselnden Bearbeitungsmaschinen die voreingestellte Bearbeitungsposition des Gegenstandes gewährleistet sein, wobei auch eine automatische Handhabung bzw. Transport zwischen den verschiedenen Bearbeitungsmaschinen möglich sein soll.The object of the invention is therefore to improve the generic device in such a way that it allows fast, tension-free and play-free clamping of the objects for the purpose of precision machining of flat objects. In addition, the respective machining process should not be obstructed by parts of the device if possible. Furthermore, the preset processing position of the object is to be ensured in successive operations on the firmly clamped object on changing processing machines, automatic handling or transport between the different processing machines should also be possible.

Die Aufgabe der Erfindung wird bei der gattungsgemäßen Vorrichtung durch die im kennzeichnenden Teil des Anspruches 1 angegebenen Merkmale gelöst. Vorteilhafte Ausgestaltung und Weiterbildungen der Erfindung sind den Unteransprüchen zu entnehmen. Die Vorrichtung nach der Erfindung, die im folgenden auch als "Rahmenklemme" bezeichnet wird, ermöglicht in einem starren, geschlossenen System eine präzise, spannungs- und spielfreie Halterung des flachen Gegenstandes und ist daher für Bearbeitungsvorgänge, die äußerste Präzision verlangen, besonders vorteilhaft anwendbar.The object of the invention is achieved in the generic device by the features specified in the characterizing part of claim 1. Advantageous refinements and developments of the invention can be found in the subclaims. The device according to the invention, which is also referred to below as a "frame clamp", enables a precise, tension-free and play-free mounting of the flat object in a rigid, closed system and can therefore be used particularly advantageously for machining operations that require extreme precision.

Das Einspannen des flachen Gegenstandes erfolgt in zwei Schritten:

  • Zunächst wird die bewegliche Klemmbacke in den Rahmen eingeführt und mit Spannmittel vorsichtig jedoch spielfrei am festzuspannenden Gegenstand in Anschlag gebracht und festgeklemmt;
  • anschließend wird die bewegliche Klemmbacke durch die Klemmittel mit einer überlagerten stützenden Verspannung am Rahmen festgeklemmt, was einer Verriegelung gleichkommt.
The flat object is clamped in two steps:
  • First, the movable clamping jaw is inserted into the frame and carefully clamped with clamping means, but without play, to the object to be clamped and clamped;
  • then the movable jaw is clamped by the clamping means with a superimposed support bracing on the frame, which is equivalent to a lock.

Die Vorrichtung stellt eine relativ einfache Konstruktion dar, deren Teile, insbesondere die bewegliche Klemmbacke leicht austauschbar sind. Dadurch kann eine schnelle Anpassung an unterschiedliche Arten und Konturen von Gegenständen erhalten werden.The device represents a relatively simple construction, the parts of which, in particular the movable jaw, are easily interchangeable. This allows a quick adaptation to different types and contours of objects to be obtained.

Ein weiterer erheblicher Vorteil der erfindungsgemäßen Vorrichtung liegt darin, daß sie eine ungehinderte Bearbeitung des in ihrfestgespannten Gegenstandes biz zu dessen Außenkontur ermöglicht, damit also auch im Bedarfsfall eine vollständige Durchtrennung desselben, ohne daß die getrennten Teile ihre Lage ändern können.Another significant advantage of the device according to the invention is that it enables unhindered processing of the object clamped in it to its outer contour, so that it can also be completely separated if necessary, without the separate parts being able to change their position.

Der jeweilige flache Gegenstand kann ein zu bearbeitendes Werkstück oder auch ein Werkzeug sein. So kann beispielsweise der flache Gegenstand eine Senkelektrode bei der Funkenerosion darstellen, der in der Rahmenklemme eingespannt an einer Senk-Erodiermaschine befestigt ist.The respective flat object can be a workpiece to be machined or a tool. For example, the flat object can represent a sinking electrode during spark erosion, which is clamped in the box clamp and fastened to a sinking EDM machine.

Mit der Rahmenklemme kann auch eine "Palettisierung" von hochpräzise eingespannten Gegenständen, insbesondere Werkstücken erhalten werden. Will man eine Folge von Bearbeitungsgängen auf unterschiedlichen Maschinen durchführen und dabei die jeweils notwendige Werkstückposition bezüglich eines Referenzpunktes auf einem Voreinstellplatz beibehalten, so kann man die Rahmenklemme samt Werkstück einfach auf den unterschiedlichen Maschinen einspannen, ohne daß die relative Lage des Werkstückes gegenüber dem Referenzsystem verändert wird. Man erhält damit eine hohe Widerholungsgenauigkeit einer definierten Bearbeitungsposition des Werkstückes jeweils bei Beginn eines neuen Arbeitsganges.The box clamp can also be used to "palletize" high-precision clamped objects, in particular workpieces. If you want to carry out a sequence of machining operations on different machines while maintaining the required workpiece position with respect to a reference point on a presetting station, you can simply clamp the box clamp and workpiece on the different machines without changing the relative position of the workpiece in relation to the reference system . This gives a high repeat accuracy of a defined machining position of the workpiece each time a new work step begins.

Mit den Merkmalen des Anspruchs 2 erreicht man ein einfaches und schnelles Einsetzen der beweglichen Klemmbacke in den Rahmen und andererseits auch ein spielfreies Anlegen dieser Klemmbacke an den festzuklemmenden Gegenstand. Mit den Merkmalen des Anspruches 4 erhält man eine Anpassung der Rahmenklemme an den Umriß unterschiedlicher einzuspannender Gegenstände.With the features of claim 2 you can achieve a simple and quick insertion of movable jaw in the frame and on the other hand a play-free application of this jaw to the object to be clamped. With the features of claim 4 you get an adaptation of the box clamp to the outline of different objects to be clamped.

Mit Anspruch 5 erreicht man, daß beim Festklemmen des flachen Gegenstandes möglichst kleine, dafür aber saubere Anlageflächen zwischen dem Gegenstand und der Rahmenklemme entstehen, so daß Bearbeitungsabfälle und Schmutz abgeführt werden können und daß im Falle einer Bearbeitung mittels Drahterosion das Einfädeln der Drahtelektrode ohne Startlochbohrung möglich ist.With claim 5 it is achieved that when clamping the flat object as small as possible, but clean contact surfaces between the object and the frame clamp arise, so that processing waste and dirt can be removed and that in the case of machining by means of wire erosion, the threading of the wire electrode without starting hole drilling possible is.

Mit Anspruch 7 wird der Einspannvorgang erleichert, insbesondere auch im Hinblick auf ein halb- oder vollautomatisches Einspannen.With claim 7, the clamping process is facilitated, especially with regard to a semi or fully automatic clamping.

Die Ansprüche 8 und 9 bieten die Möglichkeit zur automatischen Handhabung der Rahmenklemme und zur Kombination derselben mit weiteren Handhabungseinrichtungen gemäß früheren Patentanmeldungen der Anmelderin.Claims 8 and 9 offer the possibility of automatically handling the box clamp and combining it with other handling devices according to the applicant's earlier patent applications.

Im folgenden wird die Erfindung anhand von Ausführungsbeispielen im Zusammenhang mit der Zeichnung ausführlicher erläutert. Es zeigt:

  • Fig. 1 eine Draufsicht der Vorrichtung nach der Erfindung;
  • Fig. 2 einen teilweise weggebrochenen Schnitt längs der Linie I-I der Fig. 1;
  • Fig. 3 eine perspektivische Darstellung der beweglichen Klemmbacke, die bei der Erfindung verwendet wird;
  • Fig. 4 eine Draufsicht auf eine bewegliche Klemmbacke gemäß einer Weiterbildung der Erfindung, wobei ein Teil einer Ecke weggebrochen ist;
  • Fig. 5 ein erstes Beispiel für die Verwendung der Vorrichtung nach der Erfindung bei einem Handhabungssystem für die Präzisionsbearbeitung flacher Werkstücke;
  • Fig. 6 ein zweites Verwendungsbeispiel für die Vorrichtung; und
  • Fig. 7 ein drittes Verwendungsbeispiel für den Einsatz der Vorrichtung.
The invention is explained in more detail below on the basis of exemplary embodiments in conjunction with the drawing. It shows:
  • Figure 1 is a plan view of the device according to the invention.
  • Figure 2 is a partially broken section along the line II of Fig. 1.
  • Figure 3 is a perspective view of the movable jaw used in the invention;
  • 4 shows a plan view of a movable clamping jaw according to a development of the invention, with part of a corner broken away;
  • 5 shows a first example of the use of the device according to the invention in a handling system for the precision machining of flat workpieces;
  • 6 shows a second example of use for the device; and
  • Fig. 7 shows a third example of use for the use of the device.

Die in Fig. 1 dargestellte Vorrichtung hat einen geschlossenen, rechteckigen, flachen Rahmen 1, dessen eine (rechts in Fig. 1) Querseite als feststehende Klemmbacke 1.1 ausgebildet ist. Weiterhin hat die Vorrichtung eine bewegliche Klemmbacke 1.3, die von außen in den Rahmen einsetzbar ist und an dessen Längsseiten 1.2 geführt ist. Die Klemmbacke 1.3 kann an den Längsseiten 1.2 des Rahmens 1 festgeklemmt werden und sie kann gegen einen festzuhaltenden, flachen Gegenstand W verspannt werden (vgl. auch Fig. 2 bis 4). Die in Fig. 1 linksseitige Querseite 1.4 des Rahmens 1 trägt ein auf die bewegliche Klemmbacke 1.3 einwirkendes Spannmittel 1.5, das in der vorliegenden Ausführungsform aus drei, je in einer Gewindebohrung 1.4.1 der linksseitigen Querseite 1.4 eingesetzten Schraubbolzen 1.5.1 besteht. Nach einer - nicht dargestellten - Variante der Erfindung können auch hydraulisch oder pneumatisch betätigte Druckantriebe als Spannmittel 1.5 verwendet werden.The device shown in Fig. 1 has a closed, rectangular, flat frame 1, one (on the right in Fig. 1) transverse side is designed as a fixed jaw 1.1. Furthermore, the device has a movable clamping jaw 1.3, which can be inserted into the frame from the outside and is guided on its longitudinal sides 1.2. The clamping jaw 1.3 can be clamped on the long sides 1.2 of the frame 1 and it can be clamped against a flat object W to be held (cf. also FIGS. 2 to 4). The left-hand transverse side 1.4 of the frame 1 in FIG. 1 carries a clamping means 1.5 acting on the movable clamping jaw 1.3, which in the present embodiment consists of three screw bolts 1.5.1, each inserted in a threaded bore 1.4.1 of the left-hand transverse side 1.4. According to a variant (not shown) of the invention, hydraulically or pneumatically actuated pressure drives can also be used as clamping means 1.5.

Der starre Rahmen 1 und die unten näher erläuterte genaue Führung der beweglichen Klemmbacke 1.3 ermöglichen ein präzises, spiel-und verzugfreies Festspannen des zu halternden, flachen Gegenstandes W.The rigid frame 1 and the precise guidance of the movable clamping jaw 1.3, explained in more detail below, enable precise, play-free and distortion-free clamping of the flat object W to be held.

Wie insbesondere den Fig. 2 und 3 zu entnehmen ist, hat die bewegliche Klemmbacke 1.3 im wesentlichen die Form eines Quaders, der an seinen beiden kleinsten Seitenflächen jeweils mit einer Nut 1.3.1 ausgestattet ist. In Draufsicht auf die bewegliche Klemmbacke 1.3 hat der jeweilige Nutengrund 1.3.2 einen bogenförmigen Verlauf (vgl. gestrichelte Linien in Fig. 1 und 4). Der bogenförmige Verlauf des Nutengrundes 1.3.2 der beiden gegenüberliegenden Nuten ist so gestaltet, daß in Richtung von der Werkstückseite her gesehen die eine Nut (obere Nut in Fig. 1) einen tiefen Einschnitt hat, der nach hinten in Richtung zur Spannmittelseite stetig abnimmt, während der Nutengrund der anderen Nut (unten in Fig. 1) von der Werkstückseite her gesehen zunächst eine geringe Einschnittiefe hat, die nach hinten in Richtung zur Spannmittelseite hin stetig zunimmt. Mit anderen Worten ist der Nutengrund in diagonal gegenüberliegenden Ecken der beweglichen Klemmbacke tiefer eingeschnitten und in den anderen diagonal gegenüberliegenden Ecken flacher eingeschnitten. Der tiefere Einschnitt liegt dabei an den Ecken, die beim Einsetzen der beweglichen Klemmbacke 1.3 in den Rahmen 1 (vgl. gestrichelte Lage der Klemmbacke in Fig. 1) der Führungsleiste 1.2.1 näher liegt (vgl. auch Fig. 4 bis 6). Wie in Fig. 1 strichpunktiert angedeutet, beginnt das Einsetzen der beweglichen Klemmbacke 1.3 in den Rahmen in einer Schräglage. Dabei ist es von Vorteil, wenn die Ecken der beweglichen Klemmbacke 1.3 abgerundet oder abgeschrägt sind.As can be seen in particular from FIGS. 2 and 3, the movable clamping jaw 1.3 essentially has the shape of a cuboid, which is provided with a groove 1.3.1 on both of its smallest side faces. In plan view of the movable clamping jaw 1.3, the respective groove base 1.3.2 has an arcuate course (cf. dashed lines in FIGS. 1 and 4). The arcuate course of the groove base 1.3.2 of the two opposite grooves is designed in such a way that one groove (upper groove in FIG. 1) has a deep incision in the direction from the workpiece side, which decreases steadily towards the clamping device side, while the bottom of the other groove (bottom in FIG. 1) seen from the workpiece side initially has a small incision depth, which increases steadily towards the back toward the clamping device side. In other words, the bottom of the groove is cut deeper in diagonally opposite corners of the movable clamping jaw and cut more flatly in the other diagonally opposite corners. The deeper incision lies at the corners, which is closer to the guide bar 1.2.1 when the movable clamping jaw 1.3 is inserted into the frame 1 (cf. dashed position of the clamping jaw in FIG. 1) (cf. also FIGS. 4 to 6). As indicated by dash-dotted lines in Fig. 1, the insertion of the movable jaw 1.3 in the frame begins in an inclined position. It is advantageous if the corners of the movable jaw 1.3 are rounded or beveled.

Die beiden genuteten Enden der beweglichen Klemmbacke 1.3 sind jeweils durch einen Schlitz 1.3.3 in zwei Zinken 1.3.4 gespalten (Fig. 3). Die Schlitze 1.3.3 erstrecken sich jeweils ausgehend von der Mittelinie eines jeden Nutengrundes 1.3.2 parallel zu der größten Seitenfläche der beweglichen Klemmbacke 1.3 gegen deren Mitte hin. Sie verlaufen also etwa in der Mittenebene des Rahmens 1. Die jeweils zusammengehörigen Zinken 1.3.4 an beiden Seiten der Klemmbacke 1.3 können aufgrund des sie bildenden Schlitzes 1.3.3 etwas aufeinander zufedern und damit an der Führungsleiste 1.2.1 der jeweiligen Rahmenlängsseite 1.2 verspannt werden. Je ein Paar zusammengehöriger Zinken 1.3.4 besitzt eine Bohrung mit gemeinsamer und senkrecht zur Schlitzebene verlaufender Achse. Die Bohrung 1.3.5 in der einen Zinke ist eine Durchgangsbohrung mit glatten Wänden. Die dazu koaxiale andere Bohrung 1.3.6 im anderen Zinken 1.3.4 ist eine Gewindebohrung. Die Paare zusammengehöriger Zinken 1.3.4, die jeweils die Führungsleiste 1.2.1 an der Innenseite der zugewandten Rahmenlängsseite 1.2 umklammern, können dann je mit Hilfe einer mit der Gewindebohrung 1.3.6 zusammenwirkenden Senkschraube 1.3.7 gegen die Führungsleiste 1.2.1 gedrückt und daran spielfrei festgeklemmt werden (vgl. insbesondere Fig. 2).The two grooved ends of the movable jaw 1.3 are each split by a slot 1.3.3 in two prongs 1.3.4 (Fig. 3). The slots 1.3.3 each extend from the center line of each groove base 1.3.2 parallel to the largest side surface of the movable clamping jaw 1.3 towards the center thereof. They therefore run approximately in the center plane of the frame 1. The respectively associated tines 1.3.4 on both sides of the clamping jaw 1.3 can spring slightly towards one another due to the slot 1.3.3 forming them and are therefore braced on the guide bar 1.2.1 of the respective longitudinal frame side 1.2 . Each pair of associated tines 1.3.4 has a hole with a common axis running perpendicular to the slot plane. The hole 1.3.5 in one prong is a through hole with smooth walls. The other coaxial 1.3.6 hole in the other prong 1.3.4 is a threaded hole. The pairs of associated tines 1.3.4, each of which clasp the guide bar 1.2.1 on the inside of the facing longitudinal side 1.2 of the frame, can then each interact with the threaded bore 1.3.6 the countersunk screw 1.3.7 is pressed against the guide bar 1.2.1 and clamped there without play (cf. in particular Fig. 2).

Anstelle der Bohrungen 1.3.5, 1.3.6 und der Senkschrauben 1.3.7 können jedoch auch die Paare zusammengehöriger Zinken 1.3.4 je mittels eines Druckantriebes mit hydraulischer oder pneumatischer Betätigung an der zugeordneten Führungsleiste 1.2.1 festgeklammert werden.Instead of the bores 1.3.5, 1.3.6 and the countersunk screws 1.3.7, the pairs of associated tines 1.3.4 can also be clamped to the associated guide bar 1.2.1 by means of a pressure drive with hydraulic or pneumatic actuation.

Falls der festzuhaltende, flache Gegenstand W nicht parallele jedoch gerade Seitenflächen aufweist, kann die bewegliche Klemmbacke 1.3 ebenfalls mit einer Druckseite ausgebildet sein, die gegen die Rahmenlängsseiten 1.2 unter einem Winkel geneigt verläuft.If the flat object W to be held has non-parallel but straight side surfaces, the movable clamping jaw 1.3 can also be designed with a pressure side which is inclined at an angle to the longitudinal sides 1.2 of the frame.

Zur Anpassung an einen Umriß von flachen Gegenständen W mit unregelmäßigem oder gekrümmten Verlauf können die Flächen der Klemmbacken 1.1 und 1.3 sowie auch die der Rahmenlängsseiten 1.2, die jeweils mit den Seitenflächen des Gegenstandes W in Berührung kommen, als Spezialprofile 1.6 ausgestaltet sein, wie dies aus Fig. 4 für ein einfaches Beispiel mit kreisförmiger Kontur dargestellt ist.To adapt to an outline of flat objects W with an irregular or curved course, the surfaces of the clamping jaws 1.1 and 1.3 and also those of the longitudinal sides 1.2 of the frame, which come into contact with the side surfaces of the object W, can be designed as special profiles 1.6, as shown in FIG Fig. 4 is shown for a simple example with a circular contour.

Fig. 1 zeigt weiterhin, daß die dem Werkstück W zugewandten Flächen der feststehenden Klemmbacke 1.1, der beweglichen Klemmbacke 1.3 sowie der Führungsleisten 1.2.1 eingeschnittene Rillen 1.7 haben, die hier einen Halbkreisquerschnitt besitzt und die senkrecht zur Rahmenebene verlaufen. Die Rillen können auch andere Form haben, beispielsweise einen Dreiecksquerschnitt. Durch diese Rillen 1.7 werden die wirksamen Berührungsflächen verkleinert. Damit ist es jedoch möglich, diese Berührungsflächen sauberer zu halten und insbesondere Abfallartikel, Schmutz wie z.B. Metallspäne etc. abzuführen.Fig. 1 also shows that the surfaces facing the workpiece W of the fixed jaw 1.1, the movable jaw 1.3 and the guide rails 1.2.1 have incised grooves 1.7, which here has a semicircular cross section and which are perpendicular to the frame plane. The grooves can also have another shape, for example a triangular cross section. The effective contact surfaces are reduced by these grooves 1.7. However, this makes it possible to keep these contact surfaces cleaner and in particular waste items, dirt such as To remove metal chips etc.

Weiterhin kann im Falle der Bearbeitung durch Drahterosion auch das Einfädeln der Drahtelektrode in diesen Rillen erfolgen.Furthermore, in the case of machining by wire erosion, the wire electrode can also be threaded into these grooves.

Aus Fig. 2 ist noch deutlicher zu erkennen, daß die Breite der Nuten 1.3.1 an die Breite der Führungsleisten 1.2.1 angepaßt ist und zwar so, daß bei nicht fest angezogener Senkschraube 1.3.7 die bewegliche Klemmbacke leicht gegenüber dem Rahmen verschoben werden kann, daß sie aber bei angezogener Senkschraube 1.3.7 fest an der Führungsleiste 1.2.1 verspannt ist.From Fig. 2 it can be seen even more clearly that the width of the grooves 1.3.1 is adapted to the width of the guide strips 1.2.1 and in such a way that when the countersunk screw 1.3.7 is not firmly tightened, the movable clamping jaw is slightly displaced relative to the frame can, but it is firmly clamped to the guide bar 1.2.1 when the countersunk screw 1.3.7 is tightened.

Fig. 5 zeigt ein erstes Verwendungsbeispiel der Vorrichtung nach der Erfindung zum Zwecke einer automatisierten Handhabung eines fest gespannten flachen Gegenstandes W bei dessen Bearbeitung durch die Drahtelektrode D einer nicht gezeigten Drahterodiermaschine in einem Handhabungssystem 2 mit einem in X-, Y-Koordinaten bewegbaren Flachschlitten 2.1 gemäß einer früheren Patentanmeldung der Anmelderin. In Fig. 5 ist eine von zwei je an den beiten Längsseiten des Flachschlittens 2.1 ausgebildete Nut 2.1.1 zu sehen. Die sichtbare, vordere Nut 2.1.1 besitzt eine trapezförmige Querschnittsfläche. Demgegenüber ist die in Fig. 5 nicht sichtbare, andere Nut mit einer dreieckförmigen Querschnittsfläche versehen. Die beiden Randflächen jeweils der benachbarten Flachschlittenseite, die den Nuten 2.1.1 naheliegen, sind als fein bzw. präzise bearbeitete Führungsflächen ausgebildet, während die vordere Nut 2.1.1 eine durch Fräsen erstellte und weniger präzise vermaßte Oberfläche besitzt.5 shows a first example of use of the device according to the invention for the purpose of automated handling of a tightly clamped flat object W when it is processed by the wire electrode D of a wire EDM, not shown, in a handling system 2 with a flat slide 2.1 which can be moved in X, Y coordinates according to an earlier patent application by the applicant. 5 shows one of two grooves 2.1.1 each formed on the two long sides of the flat slide 2.1. The visible front groove 2.1.1 has a trapezoidal cross-sectional area. In contrast, the other groove (not visible in FIG. 5) is provided with a triangular cross-sectional area. The two edge surfaces of the adjacent flat slide side, which are close to the grooves 2.1.1, are designed as finely or precisely machined guide surfaces, while the front groove 2.1.1 has a surface that has been created by milling and is less precisely dimensioned.

Der Flachschlitten 2.1 wird anhand der Nuten 2.1.1 längs Führungsbacken eines fahrbaren Untersatzes 2.2 geführt, von denen in Fig. 5 nur die eine 2.2.1 sichtbar ist.The flat slide 2.1 is guided along the guide jaws of a mobile base 2.2 using the grooves 2.1.1, of which only one 2.2.1 is visible in FIG. 5.

Die in die vordere Nut 2.1.1 eingreifende Führungsbacke 2.2.1 ist mit einer Arretierungsvorrichtung 2.2.2 zum Feststellen des Flachschlittens 2.1 versehen. Der Untersatz 2.2 ist seinerseits mittels Führungsbacken 2.3 rechtwinklig zur Bewegungsrichtung des Flachschlittens 2.1 verschiebbar, wobei diese Führungsbacken 2.2.3 wiederum mit Nuten 2.3.1 beschriebener Art eines Balkens 2.3 geführt sind. Der quer zum Flachschlitten 2.1 gerichtete Balken 2.3 ist auf einem Gestell 2.4 gelagert. Der Flachschlitten 2.1 ist mit Hilfe von Befestigungsschrauben 2.1.2 und Justierschrauben 2.1.3 mit der feststehenden Klemmbacke 1.1 der Rahmenklemme gemäß Fig. 1 verbunden. Mittels der Justierschrauben 2.1.3 ist eine Feineinstellung von Rahmenklemme und Flachschlitten 2.1 in einer horizontalen Ebene durch sehr geringe partielle Schwenkbewegungen von Materialbezirken jeweils in der Nähe einer Justierschraube 2.1.3 etwa um parallel zu den Nuten 2.1.1 des Flachschlittens 2.1 verlaufende Achsen möglich.The guide jaw 2.2.1 engaging in the front groove 2.1.1 is provided with a locking device 2.2.2 for locking the flat slide 2.1. The base 2.2 can in turn be displaced at right angles to the direction of movement of the flat slide 2.1 by means of guide jaws 2.3, these guide jaws 2.2.3 in turn being guided with grooves 2.3.1 of the type described as a beam 2.3. The bar 2.3 directed transversely to the flat slide 2.1 is mounted on a frame 2.4. The flat slide 2.1 is connected by means of fastening screws 2.1.2 and adjusting screws 2.1.3 to the fixed jaw 1.1 of the box clamp according to FIG. 1. By means of the adjusting screws 2.1.3, a fine adjustment of the box clamp and flat slide 2.1 in a horizontal plane is possible due to very small partial swiveling movements of material areas in the vicinity of an adjusting screw 2.1.3, for example, about axes running parallel to the grooves 2.1.1 of the flat slide 2.1.

Eine weitere Möglichkeit zur Feineinstellung des Flachschlittens 2.1 im Hinblick auf dessen ungehinderte Verschiebbarkeit bzw. genaue Führung zwischen den Führungsbacken 2.2.1 des fahrbaren Untersatzes 2.2 ist durch einen im wesentlichen U-förmigen Schlitz 2.1.4 gegeben, der anschließend an dem Bereich der Befestigungs- und Justierschrauben 2.1.2 und 2.1.3 im Flachschlitten 2.1 ausgebildet ist. Rechtwinklig zu den beiden Schenkeln des U-förmigen Schlitzes 2.1.4 ist je eine in Fig. 5 nicht sichtbare Gewindebohrung in den Flachschlitten 2.1 eingearbeitet, die beidseits des U-förmigen Schlitzes 2.1.4 gegensinnig ausgehend jeweils von einem Schenkel desselben in die Nut 2.1.1 an der jeweiligen näherliegenden Längsseite des Flachschlittens 2.1 einmünden. Mit Hilfe eines in die Gewindebohrungen eingesetzten Gewindestiftes 2.1.5, dessen inneres Ende sich jeweils gegen die entsprechende Seite des vom U-förmigen Schlitzes 2.1.4 umschlossenen, rechteckigen Materialbezirkes des Flachschlittens 2.1 stemmt, läßt sich dann eine Feinabstimmung der Nuten 2.1.1 des letzteren auf die Führungsbacken 2.2.1 des fahrbaren Untersatzes wiederum durch geringe partielle Drehbewegung um eine vertikale Achse vollziehen. Die in Fig. 5 dargestellte Rahmenklemme ist mit der gemäß den Fig. 1 bis 3 identisch.A further possibility for the fine adjustment of the flat slide 2.1 with regard to its unimpeded displaceability or precise guidance between the guide jaws 2.2.1 of the mobile base 2.2 is provided by an essentially U-shaped slot 2.1.4, which is then attached to the area of the fastening and adjusting screws 2.1.2 and 2.1.3 is formed in the flat slide 2.1. At right angles to the two legs of the U-shaped slot 2.1.4, a threaded hole (not visible in FIG. 5) is machined into the flat slide 2.1, which on both sides of the U-shaped slot 2.1.4 starts in opposite directions from one leg of the same into the groove 2.1 .1 open on the respective closer longitudinal side of the flat slide 2.1. With the help of a threaded pin 2.1.5 inserted into the threaded bores, the inner end of which rests against the corresponding side of the rectangular material area of the flat slide 2.1 enclosed by the U-shaped slot 2.1.4, the grooves 2.1.1 of the can then be fine-tuned perform the latter on the guide jaws 2.2.1 of the mobile pedestal, in turn, by slight partial rotary movement about a vertical axis. 5 is identical to that shown in FIGS. 1 to 3.

In Fig. 6 ist ebenfalls eine Rahmenklemme ähnlicher Bauart dargestellt. Sie ist anhand von im Rahmen 1 vorgesehener Bohrungen 1.8 sowie in diese eingesetzte Schrauben 1.8.1 an einer Palette 1.9 montiert. Die Palette 1.9 weist zwecks Handhabung Nuten 1.9.1 auf, die ähnlich den Nuten 2.1.1 des Flachschlittens 2.1 gemäß der Fig. 5 ausgebildet sind.In Fig. 6, a box clamp of a similar type is also shown. It is mounted on a pallet 1.9 using holes 1.8 provided in frame 1 and screws 1.8.1 inserted into them. The pallet 1.9 has the purpose Handling grooves 1.9.1, which are similar to the grooves 2.1.1 of the flat carriage 2.1 according to FIG. 5.

In Fig. 7 wird die Verwendung einer Rahmenklemme gemäß den Fig. 1 bis 3 in einem weiteren Handhabungssystem 10 gezeigt, das eine Bearbeitung eines in der Rahmenklemme festgespannten Gegenstandes W von beiden Seiten her gestattet, unabhängig davon, ob dieser Gegenstand flach ist oder beiderseits aus der Rahmenklemme hervorsteht. Das Handhabungssystem geht von der Anordnung nach Fig. 5 aus. Singemäß ist die Rahmenklemme an einem Flachschlitten 12.1 montiert und dieser ist mit seitlichen Nuten 12.1.1 zwischen Führungsbacken 12.2.1 an den oberen Längskanten eines fahrbaren Untersatzes 12.2 verschieblich angeordnet. Im Flachschlitten 12.1 sind hierbei zwei Schlitze 12.1.4 angebracht, die etwa vom mittleren Bereich des Flachschlittens 12.1 schräg und je über einen Knick zur entsprechenden Nut 12.1.1 auslaufen.FIG. 7 shows the use of a box clamp according to FIGS. 1 to 3 in a further handling system 10, which permits processing of an object W clamped in the box clamp from both sides, regardless of whether this object is flat or on both sides the box clamp protrudes. The handling system is based on the arrangement according to FIG. 5. Accordingly, the box clamp is mounted on a flat slide 12.1 and this is arranged with lateral grooves 12.1.1 between guide jaws 12.2.1 on the upper longitudinal edges of a mobile base 12.2. In this case, two slots 12.1.4 are provided in the flat slide 12.1, which run obliquely from the central area of the flat slide 12.1 and each extend to the corresponding groove 12.1.1 via a kink.

Der Untersatz 12.2 wird dann mittels an seinen unteren Längskanten vorgesehenen, weiteren Führungsbacken 12.2.4 gleicher Art in einem Paar von Nuten 12.3.1 geführt, die längs den oberen Längskanten eines parallel zur Bewegung des Flachschlittens 12.1 ausgerichteten Balkens 12.3 verlaufen und hinsichtlich ihrer Querschnittsflächen sowie Oberflächenbeschaffenheit spielbeweglich zu den Nuten 12.1.1 des Flachschlittens 12.1 ausgebildet sind.The pedestal 12.2 is then guided by means of further guide jaws 12.2.4 of the same type provided on its lower longitudinal edges in a pair of grooves 12.3.1 which run along the upper longitudinal edges of a bar 12.3 aligned parallel to the movement of the flat slide 12.1 and with regard to their cross-sectional areas and Surface texture are movable to play the grooves 12.1.1 of the flat slide 12.1.

Der zur Parallelführung des Untersatzes 12.2 dienende Balken 12.3 ist auch mit einem Paar von in seinen unteren Längskanten eingearbeiteten Nuten 12.3.2 versehen, die bezüglich ihrer Querschnittsfläche und Oberflächenbeschaffenheit denjenigen 12.1.1 des Flachschlittens 12.1 entsprechen.The beam 12.3 used to guide the base 12.2 in parallel is also provided with a pair of grooves 12.3.2 machined in its lower longitudinal edges, which correspond to those 12.1.1 of the flat slide 12.1 with regard to their cross-sectional area and surface quality.

Um eine Bearbeitung des Gegenstandes W von der in der Fig. 7 unsichtbaren unteren Seite der Rahmenklemme her zu ermöglichen, kann diese samt Flachschlitten 12.1 und fahrbarem Untersatz 12.2 an der Unterseite des zur Parallelführung dienenden Balkens 12.3 angebracht werden, in dem die unteren Führungsbacken 12.2.4 des Untersatzes 12.2 in die unteren Nuten 12.3.2 des Balkens 12.3 eingeführt werden, so daß der Flachschlitten 12.1 und die Rahmenklemme mit samt den zu bearbeitenden Gegenstand W in einer um die Balkenlängsachse um 180° gedrehten Lage nach unten weisen.In order to enable processing of the object W from the lower side of the box clamp, which is invisible in FIG. 7, this can be attached together with the flat slide 12.1 and the mobile base 12.2 to the underside of the bar 12.3 serving for parallel guidance, in which the lower guide jaws 12.2. 4 of the pedestal 12.2 are inserted into the lower grooves 12.3.2 of the beam 12.3 so that the flat slide 12.1 and the box clamp together with the object W to be processed point downward in a position rotated by 180 ° about the longitudinal axis of the beam.

Es sind noch andere Ausführungsformen und Verwendungsarten der erfindungsgemäßen Vorrichtung möglich. So kann der Flachschlitten 2.1 in der Anordnung nach Fig. 5 durch einen kreiszylindrischen Schaft ersetzt werden, der in einem Gehäuse führbar ist und hinsichtlich seiner Axial-und Drehbewegungen begrenzt ist.Other embodiments and types of use of the device according to the invention are also possible. The flat slide 2.1 in the arrangement according to FIG. 5 can thus be replaced by a circular cylindrical shaft which can be guided in a housing and is limited in terms of its axial and rotational movements.

Der Flachschlitten 12.1 der Anordnung nach Fig. 7 und 5 ließe sich schließlich ähnlich wie der zur Parallelführung dienende Balken 12.3 mit einem Querschnitt entsprechend dem Balken 12.3 und ebenfalls mit vier Nuten gleich denjenigen des Balkens ausbilden. Ein derartiger Schlitten wäre dann auch in einer um 180° um seine Längsachse verdrehten Lage zwischen die Führungsbacken 12.2.1 de Untersatzes 12.2 einschiebbar.The flat slide 12.1 of the arrangement according to FIGS. 7 and 5 could finally be designed similarly to the beam 12.3 used for parallel guidance with a cross section corresponding to the beam 12.3 and also with four grooves identical to those of the beam. Such a slide would then also be insertable between the guide jaws 12.2.1 of the base 12.2 in a position rotated by 180 ° about its longitudinal axis.

Claims (9)

1. Device for retaining and handling a flat object, in particular for retaining a flat object on a machine tool, the object (W) being clampable between a stationary clamping jaw (1.1) and a movable clamping jaw (1.3), comprising:
a) a closed, rectangular, flat frame (1), one side of which is constructed as the stationary clamping jaw (1.1
b) a movable clamping jaw (1.3) which can be inserted externally into the frame (1), is guided in the latter and can be braced against the flat object,
c) securing means (1.3.5, 1.3.6, 1.3.7) for securing the movable clamping jaw (1.3) on the frame (1) and
d) at least one tightening means (1.5) acting on the movable clamping jaw (1.3),
characterized in that:
e) the tightening means (1.5) is provided on the frame side (1.4) located opposite the stationary clamping jaw (1.1),
f) the movable clamping jaw (1.3) has substantially the shape of a rectangular parallelepiped and has, at each of its two end sides located opposite each other, a groove (1.3.1) into which a guiding strip (1.2.1) engages in each case, which strips are provided on each of the inner surfaces of longitudinal sides (1.2) of the frame (1 ) facing each other, and
g) the movable clamping jaw (1.3) is split, on each of its two sides guided on the frame (1), into two prongs (1.3.4) by a slit (1.3.3) which extends parallel to the largest side surfaces of the movable clamping jaw (1.3) towards the middle thereof, the respective slit (1.3.3) beginning in the groove bottom (1.3.2) such that the two prongs (1.3.4) can be secured by the securing means (1.3.5, 1.3.6, 1.3.7) on the respective guiding strip of the frame (1).
2. Device according to Claim 1, characterized in that the groove bottoms (1.3.2) of the two grooves (1.3.1), when viewing the movable clamping jaw (1.3) in a plan view, have an arc-shaped path, and in that in the direction from a front side (which faces the object) towards a rear side (which faces the tightening means) of the movable clamping jaw (1.3) one groove has a steadily increasing depth and the other groove has a steadily decreasing depth.
3. Device according to Claim 1 and 2, characterized in that the slits (1.3.3) are offset from a bore extending perpendicular to the plane of the slit, the bore in each of the prongs (1.3.4) associated with each other in pairs being a threaded bore (1.3.6) into which there can be screwed a screw (1.3.7) which presses the two prongs (1.3.4) of an associated pair against the guiding strip (1.2.1) engaging into the respective groove (1.3.1).
4. Device according to one of Claims 1 to 3, characterized in that the side surfaces of the clamping jaws (1.1, 1.3) facing the object to be clamped and also, if necessary, the surfaces of the longitudinal sides (1.2) of the frame (1) facing the object (W) have special profiles (1.6) matching the contour of the object.
5. Device according to one of Claims 1 to 4, characterized in that the sides of the clamping jaws (1.1, 1.3) facing the object (W) and the longitudinal sides (1.2) of the frame (1) have channels (1.7) extending perpendicularly to the plane of the frame, in particular with a semicircular cross-section.
6. Device according to one of Claims 1 to 5, characterized in that the tightening means (1.5) are screw-bolts (1.5.1) which are arranged in threaded bores (1.4.1) in the frame side (1.4) located opposite the stationary clamping jaw (1.1).
7. Device according to one of Claims 1, 2, 4 or 5, characterized in that the securing means (1.3.5, 1.3.6, 1.3.7) and the tightening means (1.5) are in each case a hydraulic or pneumatic pressure actuator.
8. Use of the device according to Claims 1 to 7 for retaining and handling a flat object (W) during successive machining operations.
9. Use according to Claim 8, in which the device is secured to a pallet (1.9) by means of bores (1.8) provided in its frame (1) as well as screws (1.8.1) inserted in the latter or is further conveyed between machining appliances by means of another handling aid, such as in particular at least a flat slide (2.1) which can be guided on a stand (2.3, 2.4) by means of grooves (2.1.1, 2.3.1) of special design or a shaft which can be guided in a cylindrical housing, the said slide or shaft being joined in each case to the stationary clamping jaw (1.1) with the aid of securing screws (2.1.2) and adjusting screws (2.1.3).
EP87901052A 1986-02-07 1987-02-06 Device for retaining and handling a flat object Expired - Lifetime EP0254741B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87901052T ATE59320T1 (en) 1986-02-07 1987-02-06 DEVICE FOR HOLDING AND HANDLING A FLAT OBJECT.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH476/86 1986-02-07
CH476/86A CH668733A5 (en) 1986-02-07 1986-02-07 DEVICE FOR HOLDING AND HANDLING A FLAT OBJECT.

Publications (2)

Publication Number Publication Date
EP0254741A1 EP0254741A1 (en) 1988-02-03
EP0254741B1 true EP0254741B1 (en) 1990-12-27

Family

ID=4187875

Family Applications (2)

Application Number Title Priority Date Filing Date
EP87200697A Pending EP0237136A1 (en) 1986-02-07 1987-02-06 Device for retaining and manipulating a flat object
EP87901052A Expired - Lifetime EP0254741B1 (en) 1986-02-07 1987-02-06 Device for retaining and handling a flat object

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP87200697A Pending EP0237136A1 (en) 1986-02-07 1987-02-06 Device for retaining and manipulating a flat object

Country Status (6)

Country Link
US (1) US4824085A (en)
EP (2) EP0237136A1 (en)
JP (1) JPS63502812A (en)
CH (1) CH668733A5 (en)
ES (1) ES2020308B3 (en)
WO (1) WO1987004651A1 (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3919078C1 (en) * 1989-06-10 1990-02-01 Erowa Ag, Reinach, Ch
US5033724A (en) * 1989-10-06 1991-07-23 James Lawrence W Machine tool vise
US5108080A (en) * 1989-10-06 1992-04-28 James Lawrence W Machine tool vise
US5312097A (en) * 1992-12-21 1994-05-17 Womack Terry R Double C clamp device
US5391230A (en) * 1993-07-07 1995-02-21 Eastman Kodak Company Apparatus for holding solid compact medicaments during processing
DE4340818C2 (en) * 1993-12-01 2002-03-14 Mannesmann Sachs Ag Clamping device for a workpiece
US5551676A (en) * 1995-03-24 1996-09-03 Gaiser Tool Co. Dual clamping vise
US6761350B1 (en) * 1996-05-24 2004-07-13 Micron Technology, Inc. Clamping device
US5791640A (en) * 1996-05-24 1998-08-11 Micron Technology, Inc. Clamping device
JP3037665B2 (en) * 1997-11-06 2000-04-24 株式会社浅井鉄工所 Small deformed object gripping device
US20040168287A1 (en) * 2001-12-19 2004-09-02 Chun-Tsai Yang Pressing apparatus for a semiconductor device
US6827327B2 (en) * 2002-07-02 2004-12-07 Cosmo Instruments Co., Ltd. Flow resistance setting nozzle
US20060197269A1 (en) * 2005-03-04 2006-09-07 Downey Curtis W Drawer clamp
DE102005026346A1 (en) * 2005-06-08 2006-12-14 Bernhard Brandl Device and arrangement for fixing workpieces
USD803021S1 (en) 2015-07-30 2017-11-21 Ming Chieh Wu Pliers
CN106807960A (en) * 2015-12-02 2017-06-09 安徽鸿远机电科技有限公司 A kind of drilling and milling machine middle carriage
US11925524B1 (en) * 2023-06-07 2024-03-12 King Faisal University Dental tooth grasper

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE525321A (en) *
US1328492A (en) * 1919-10-27 1920-01-20 Frank V Carman Work-holding cradle for spike-hole-plug machines
FR547479A (en) * 1921-05-10 1922-12-13 vice for machine tools
FR764590A (en) * 1933-10-20 1934-05-24 Device to facilitate the assembly of the elements of a frame
US2518867A (en) * 1948-04-13 1950-08-15 Laher Spring And Tire Corp Vehicle spring manufacturing method
US2865591A (en) * 1956-02-23 1958-12-23 Holinshead Alida Viola Hose-clamp
CH354045A (en) * 1957-11-05 1961-04-30 Ehrat Arnold Clamping device for workpieces such as metal signs, etc. when engraving the same
US3239210A (en) * 1963-07-12 1966-03-08 Ralph L Hustead Universal drill press and pipe vise
FR1482132A (en) * 1966-04-12 1967-05-26 Demurger & Cie Ets perfected vice
US3665986A (en) * 1969-10-02 1972-05-30 Jimmie Johnson Jig for cabinet door construction
FR2503009A1 (en) * 1981-04-07 1982-10-08 Felix Decool Sectional cramp for joinery - uses telescopic rectangular sections connected to angle fittings to mount jaws with clamp screws
US4412676A (en) * 1981-12-24 1983-11-01 Black & Decker Inc. Vise for workbench
FR2555705B1 (en) * 1983-11-25 1986-07-11 Dubois Rene SUPPORT ADAPTABLE TO PARTS OF VARIOUS SHAPES AND DIMENSIONS

Also Published As

Publication number Publication date
EP0254741A1 (en) 1988-02-03
WO1987004651A1 (en) 1987-08-13
ES2020308B3 (en) 1991-08-01
EP0237136A1 (en) 1987-09-16
US4824085A (en) 1989-04-25
CH668733A5 (en) 1989-01-31
JPS63502812A (en) 1988-10-20

Similar Documents

Publication Publication Date Title
EP0254741B1 (en) Device for retaining and handling a flat object
DE4442802C1 (en) Sliding block for clamping tools
EP2625003B1 (en) Linear mechanical quick-release fastener
EP0742081A2 (en) Universal precision vice for a machine tool
WO1994001242A1 (en) Adapter for use with clamping devices on multi-hole machine-tool workpiece tables
EP0116260B1 (en) Clamping apparatus
DE4339271C1 (en) Clamping device for releasable holding of workpieces
DE29716104U1 (en) Clamping device, especially machine vice
DE2918471A1 (en) PUNCH PRESS
EP1215002B1 (en) Device for machining window corners
DE69012313T2 (en) NUMERICALLY CONTROLLED MACHINE FOR MACHINING OR MEASURING WITH A FASTENING DEVICE FOR A WORKPIECE ON A WORK TABLE.
DE3441968A1 (en) Article-fixer clamping device and machining process
EP1563964A1 (en) Auxiliary device for machining workpieces
DE1256514B (en) Cutting plate for a cutting tool, in particular a turning tool
DE3128198A1 (en) METHOD AND DEVICE FOR PRODUCING NUT-SPRING CONNECTIONS IN WORKPIECES
DE19701394C1 (en) Holding device for multi-sided workpieces
DE3105181A1 (en) CUTTING TOOL
DE2745402C2 (en) Tool holder for a machine tool
DE2209516A1 (en) BORING BAR AND BORING BAR INSERT WITH BORING STEELS ON BOTH ENDS
DE10391648B4 (en) Support device for Spanngut in a jig
DE19500946C1 (en) Angle-adjustable workpiece seat
DE2322825A1 (en) CUTTING TOOL AND METHOD FOR SHAPING THE CUTTING EDGE OF THESE
DE19631835C1 (en) Workbench, especially for school use
DE2519675C2 (en) Stop piece for insertion in a T-slot of a machine tool table
DE3319642A1 (en) Tool carrier, in particular for the machining of workpieces

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT CH DE FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19880205

17Q First examination report despatched

Effective date: 19890630

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

ITF It: translation for a ep patent filed
XX Miscellaneous (additional remarks)

Free format text: VERBUNDEN MIT 87200697.8/0237136 (EUROPAEISCHE ANMELDENUMMER/VEROEFFENTLICHUNGSNUMMER) DURCH ENTSCHEIDUNG VOM 28.04.89.

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE ES FR GB IT LI NL SE

REF Corresponds to:

Ref document number: 59320

Country of ref document: AT

Date of ref document: 19910115

Kind code of ref document: T

XX Miscellaneous (additional remarks)

Free format text: VERBUNDEN MIT 87200697.8/0237136 (EUROPAEISCHE ANMELDENUMMER/VEROEFFENTLICHUNGSNUMMER) DURCH ENTSCHEIDUNG VOM 28.04.89.

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REF Corresponds to:

Ref document number: 3767065

Country of ref document: DE

Date of ref document: 19910207

ITTA It: last paid annual fee
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
EAL Se: european patent in force in sweden

Ref document number: 87901052.8

REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Free format text: BUECHLER B-SET AG TRANSFER- MECATOOL AG

REG Reference to a national code

Ref country code: ES

Ref legal event code: PC2A

NLT1 Nl: modifications of names registered in virtue of documents presented to the patent office pursuant to art. 16 a, paragraph 1

Owner name: MECATOOL AG

REG Reference to a national code

Ref country code: FR

Ref legal event code: CD

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19990115

Year of fee payment: 13

Ref country code: FR

Payment date: 19990115

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19990119

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19990122

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19990125

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19990126

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19990201

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19990218

Year of fee payment: 13

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: GEORG FISCHER AG

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000206

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000206

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000207

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000207

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000229

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000229

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000901

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20000206

EUG Se: european patent has lapsed

Ref document number: 87901052.8

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001031

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20000901

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001201

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20011010

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050206