WO1991008082A1 - Tensioning device, especially for spiral tensioners of cnc vertical machines - Google Patents

Tensioning device, especially for spiral tensioners of cnc vertical machines Download PDF

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Publication number
WO1991008082A1
WO1991008082A1 PCT/AT1990/000109 AT9000109W WO9108082A1 WO 1991008082 A1 WO1991008082 A1 WO 1991008082A1 AT 9000109 W AT9000109 W AT 9000109W WO 9108082 A1 WO9108082 A1 WO 9108082A1
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WO
WIPO (PCT)
Prior art keywords
clamping
plates
grid
bores
plate
Prior art date
Application number
PCT/AT1990/000109
Other languages
German (de)
French (fr)
Inventor
Wilfried Stern
Friedrich Pucher
Original Assignee
Alfred Hörtnagl Gesellschaft M.B.H. & Co. Kg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alfred Hörtnagl Gesellschaft M.B.H. & Co. Kg filed Critical Alfred Hörtnagl Gesellschaft M.B.H. & Co. Kg
Publication of WO1991008082A1 publication Critical patent/WO1991008082A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/10—Auxiliary devices, e.g. bolsters, extension members
    • B23Q3/103—Constructional elements used for constructing work holders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/03—Stationary work or tool supports

Definitions

  • Clamping device in particular for reversible clamps of CNC vertical machines
  • the invention relates to a clamping device for turning clamps of CNC vertical machines with at least one clamping plate, which is provided with flat-side bores for fastening clamping or intermediate elements, and has bores for its own fastening on the end faces.
  • clamping devices In order to take full advantage of the very expensive NC and CNC machines, clamping devices have been developed that allow several workpieces to be clamped.
  • Conventional clamping devices have a clamping plate or a clamping block, which are provided with grid holes on their clamping surface, by means of which the workpiece holders can be fastened to the clamping plate or to the clamping block.
  • the clamping devices are designed as a single clamping plate, as a T-shaped plate or, as already mentioned, as a prism, but their respective shape cannot be changed. Variations only exist in the different utilization of the grid bores.
  • the object of the invention is to improve a clamping device of the type mentioned at the outset in such a way that it can be increasingly adapted to different requirements with regard to workpiece clamping.
  • Another object of the invention is to provide a simplified clamping device of the type mentioned at the outset, which, however, offers the same or improved clamping options for different workpieces compared to the devices according to the prior art.
  • the tensioning device according to the invention is characterized in that it is designed as a variable kit with two rotatably mounted flange plates which have grid holes, the tensioning plate being clampable in different positions with the flange plates.
  • the kit according to the invention one or more clamping plates can be mounted in different positions on the two flange plates.
  • the flange plates are then mounted directly or indirectly via an intermediate plate on the reversing clamp of the CNC machine or mounted on the support bearing.
  • the grid accuracy of the bores, which accommodate the fitting bushes, is advantageously + - 0.01 mm.
  • the grid bores in the flange plates describe a rectangle, preferably a square.
  • Another exemplary embodiment of the invention provides that a plurality, preferably four clamping plates are provided which have grid bores on at least one side edge, the grid of which corresponds to grid holes on at least one flat side of the clamping plate.
  • a clamping tower can be formed in a simple manner, for example, by means of four clamping plates of this type.
  • At least one support plate is provided which is oriented perpendicular to the clamping plate or plates and perpendicular to the flange plates and has grid holes on the end faces, the grid of which corresponds to that of the grid holes in the flange plates.
  • FIG. 7 shows the same view as FIG. 6, the device being rotated by 90 °
  • FIG. 8 shows a rear view of the flange plate according to FIG. 5
  • FIG. 9 shows schematically the clamping plate and a flange plate measured a further arrangement of the invention
  • FIG. 10 shows a side view of the device in the arrangement according to FIG. 9
  • FIG. 11 shows a plan view of a flange plate and clamping plates mounted thereon according to a further arrangement of the invention
  • FIG. 12 shows a side view 11 shows the device in the arrangement according to FIG. 11
  • FIG. 13 shows a side view of the device which is rotated by 90 "in relation to FIG. 12
  • FIG. 14 shows section A of FIG. 12, and FIG.
  • FIG. 15 shows a further top view of a flange plate and clamping plates arranged thereon in a further arrangement of the clamping device according to the invention
  • FIG. 16 shows a side view of the clamping device according to FIG. 15
  • FIG. 17 shows a schematic diagram of an adapter according to the invention .
  • the tensioning device 1 can be used in the reversible tensioner 2 of a vertical machine.
  • the CNC machine is not the subject of the present invention and is designed according to the prior art.
  • the mounting and rotation of the tensioning device 1 according to the invention takes place in the reversible tensioner 2 in a conventional manner.
  • the tensioning device 1 differs from conventional tensioning devices 2 in that it is designed as a variable kit. It has two flange plates 4 and at least one clamping plate 5.
  • each flange plate 4 is provided with grid holes 7.
  • the clamping plate 5 has holes 6 with a corresponding grid spacing a on its end faces (see FIG. 4).
  • the clamping plate 5 can thus be mounted in different positions and at different locations with respect to the flange plates 4. Likewise, several clamping plates 5 can be mounted between two flange plates 4.
  • one of the flange plates 4 is advantageously mounted directly on the reversing clamp, for example a sliding block 8 is provided which serves to rotate the clamping device 1.
  • 9 and 10 show an embodiment in which only one clamping plate 5 is provided and which is suitable for very high workpieces.
  • Support plate 10 is provided.
  • the support plate 10 is narrower and thinner than the clamping plates 5, since it has at least two holes 11 on its end faces, which are at the same grid spacing as the grid holes 7 on the flange disks 4 and the holes 6 on the end faces of the clamping plates 5 are located.
  • the strength of the tensioning device 1 is increased considerably by the arrangement of a support plate 10.
  • fitting bushes 12 which are advantageously slotted, are provided.
  • the fitting bushes each protrude into both the flange plate 4 and the clamping plate 5.
  • the fitting bushes 12 ensure the exact alignment of the flange plates 4 and the clamping plates 5.
  • the actual connection of the flange plate 4 with the clamping plate 5 takes place by means of threaded bolts 13.
  • the number of threaded bolts 13 used depends on the load to which the tensioning device 1 is exposed during operation.
  • 15 and 16 show an embodiment of the clamping device 1 according to the invention, in which four clamping plates 5 are assembled to form a clamping tower.
  • the clamping plates 5 which are made narrower by the plate thickness S than the clamping plates 5 of the previously described exemplary embodiments, are also provided on their longitudinal edges 5 ′′ with bores 15 at a grid spacing.
  • the clamping plates 5 have corresponding bores 15 on one flat side In this way, the clamping plates 5 can be screwed to one another, with locating bushes, but also locating pins or the like, in turn, can be used for more precise positioning.
  • the clamping plates 5 are screwed together with the flange plates 4 via the grid holes 7. It is particularly important that the grid bores 6, 7, 15 described so far do not serve to fasten the workpieces 16, but rather to connect the individual parts of the clamping device to one another.
  • the clamping plates 5 only have special bores 17 on their clamping surfaces, which are used to fasten adapters 18.
  • the adapters 18 have corresponding bores 17 '. It can happen that not all special bores 17 on the clamping plate 5 are always used. In some cases, e.g. B. for mounting the adapter 18 suffice with two holes 17, 17 'can be found. In principle, however, the same bores 17 are always used for mounting the adapters 18 and the distance D between different groups of bores (FIG. 3) does not lie in any particular grid.
  • the adaptation to various workpieces 16 takes place without exception by means of different workpiece receptacles 19 in the adapters 18.
  • any desired workpiece 16 of different shape can be fastened on the clamping plate 5 without the need for an expensive drilling grid on the clamping plate 5.
  • the workpieces 16 are advantageously pressed down by conventional hydraulically actuated brackets or clamping irons, not shown.

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

Abstract

A tensioning device for spiral tensioners (2) of CNC vertical machines. It has at least one tensioning plate (5) with drillings (17) for tensioning or intermediate components (18). It is designed as a variable structural set with two flange plates (4) having grid-pattern drillings (7). On the frontal surfaces (5') the tensioning plate (5) has drillings (6), the grid pattern of which coincides with that of the drillings (7) in the flange plates (4). The tensioning plate (5) may be clamped in various positions with the flange plates (4). Likewise, several tensioning plates (5) can be screwed to the flange plates (4) and to one another.

Description

Spannvorrichtung, insbesondere für Wendespanner von CNC-Vertikalmaschinen Clamping device, in particular for reversible clamps of CNC vertical machines
Die Erfindung bezieht sich auf eine Spannvorrichtung für Wen- despanner von CNC-Vertikalmaschinen mit mindestens einer Spannplatte, die mit flachseitigen Bohrungen zur Befestigung von Spann- oder Zwischenelemente versehen ist, und an den Stirnflächen Bohrungen zur eigenen Befestigung aufweist.The invention relates to a clamping device for turning clamps of CNC vertical machines with at least one clamping plate, which is provided with flat-side bores for fastening clamping or intermediate elements, and has bores for its own fastening on the end faces.
Um die Vorteile der sehr teuren NC- und CNC-Maschinen voll nützen zu können, sind Spannvorrichtungen entwickelt worden, die das Spannen mehrerer Werkstücke erlauben. Herkömmliche Spannvorrichtungen weisen eine Spannplatte oder einen Spann¬ block auf, die an ihrer Spannfläche mit Rasterbohrungen ver- sehen sind, mittels denen die Werkstückhalterungen an der Spannplatte bzw. am Spannblock befestigbar sind.In order to take full advantage of the very expensive NC and CNC machines, clamping devices have been developed that allow several workpieces to be clamped. Conventional clamping devices have a clamping plate or a clamping block, which are provided with grid holes on their clamping surface, by means of which the workpiece holders can be fastened to the clamping plate or to the clamping block.
Die Spannvorrichtungen sind dabei als einzelne Spannplatte, als T-förmige Platte oder wie bereits erwähnt, als Prisma ausgeführt, aber in ihrer jeweiligen Form unveränderbar. Va¬ riationsmöglichkeiten bestehen lediglich in der unterschied¬ lichen Ausnutzung der Rasterbohrungen.The clamping devices are designed as a single clamping plate, as a T-shaped plate or, as already mentioned, as a prism, but their respective shape cannot be changed. Variations only exist in the different utilization of the grid bores.
Aufgabe der Erfindung ist es, eine Spannvorrichtung der ein- gangs erwähnten Art dahingehend zu verbessern, daß sie ver¬ mehrt an unterschiedliche Anforderungen in bezug auf die Werkstückverspannung anpaßbar ist.The object of the invention is to improve a clamping device of the type mentioned at the outset in such a way that it can be increasingly adapted to different requirements with regard to workpiece clamping.
Eine weitere Aufgabe der Erfindung ist es, eine vereinfachte Spannvorrichtung der eingangs erwähnten Art zu schaffen, die jedoch gegenüber den Vorrichtungen nach dem Stand der Technik gleiche oder verbesserte AufSpannmöglichkeiten für unter¬ schiedliche Werkstücke bietet.Another object of the invention is to provide a simplified clamping device of the type mentioned at the outset, which, however, offers the same or improved clamping options for different workpieces compared to the devices according to the prior art.
Die erfindungsgemäße Spannvorrichtung zeichnet sich dadurch aus, daß sie als variierbarer Bausatz mit zwei drehbar gela¬ gerten Flanschplatten, die Rasterbohrungen aufweisen, ausge¬ führt ist, wobei die Spannplatte in verschiedenen Positionen it den Flanschplatten verspannbar ist. Durch den erfindungsgemäßen Bausatz kann eine oder können mehrere Spannplatten in unterschiedlicher Position an den beiden Flanschplatten montiert werden. Die Flanschplatten sind dann unmittelbar oder über eine Zwischenplatte mittelbar am Wendespanner der CNC-Maschine montiert bzw. am Stützlager gelagert.The tensioning device according to the invention is characterized in that it is designed as a variable kit with two rotatably mounted flange plates which have grid holes, the tensioning plate being clampable in different positions with the flange plates. With the kit according to the invention, one or more clamping plates can be mounted in different positions on the two flange plates. The flange plates are then mounted directly or indirectly via an intermediate plate on the reversing clamp of the CNC machine or mounted on the support bearing.
Um die exakte Ausrichtung der Spannplatten zu gewährleisten, ist vorteilhaft vorgesehen, daß in mindestens zwei der Boh- rungen an den Stirnflächen der Spannplatte und in korrespon¬ dierenden Bohrungen der Flanschplatten Paßbuchsen angeordnet sind, die sowohl in die Bohrungen in der Spannplatte als auch in die Bohrungen in den Flanschplatten ragen und die die Spannplatte in bezug auf die Flanschplatten positionieren.In order to ensure the exact alignment of the clamping plates, provision is advantageously made for fitting bushes to be arranged in at least two of the bores on the end faces of the clamping plate and in corresponding holes in the flange plates, both in the holes in the clamping plate and in the Bores protrude in the flange plates and position the clamping plate in relation to the flange plates.
Die Ausrichtung der Spannplatte könnte ebenfalls durch Pa߬ stifte od. dgl. erfolgen. Die Verwendung von Paßbuchsen und insbesondere Paßbuchsen mit Schlitzen hat sich herstellungs- technisch als vorteilhaft erwiesen.The clamping plate could also be aligned by means of dowel pins or the like. The use of fitting bushings and in particular fitting bushings with slots has proven to be advantageous in terms of production.
Die Rastergenauigkeit der Bohrungen, die die Paßbuchsen auf¬ nehmen, liegt vorteilhaft bei +- 0,01 mm.The grid accuracy of the bores, which accommodate the fitting bushes, is advantageously + - 0.01 mm.
Vorteilhaft ist weiters vorgesehen, daß die Rasterbohrungen in den Flanschplatten ein Rechteck, vorzugsweise ein Quadrat beschreiben.It is also advantageously provided that the grid bores in the flange plates describe a rectangle, preferably a square.
Ein weiteres Auεführungsbeispiel der Erfindung sieht vor, daß mehrere, vorzugsweise vier Spannplatten vorgesehen sind, die Rasterbohrungen an mindestens einer Seitenkante aufweisen, deren Raster mit Rasterbohrungen an mindestens einer Flach¬ seite der Spannplatte übereinstimmt.Another exemplary embodiment of the invention provides that a plurality, preferably four clamping plates are provided which have grid bores on at least one side edge, the grid of which corresponds to grid holes on at least one flat side of the clamping plate.
Mittels vier derartiger Spannplatten kann beispielsweise auf einfache Art und Weise ein Spannturm gebildet werden.A clamping tower can be formed in a simple manner, for example, by means of four clamping plates of this type.
Um die Stabilität der Spannvorrichtung zu erhöhen und die Spannvorrichtung auch bei extrem hohem Werkzeugdruck einset¬ zen zu können, ist in einem weiteren Ausführungsbeispiel der Erfindung vorgesehen, daß mindestens eine Abstützplatte vor¬ gesehen ist, die senkrecht zu der oder den Spannplatten und senkrecht zu den Flanschplatten ausgerichtet ist und an den Stirnflächen Rasterbohrungen aufweist, deren Raster mit dem der Rasterbohrungen in den Flanschplatten übereinstimmt.In order to increase the stability of the clamping device and to be able to use the clamping device even when the tool pressure is extremely high, in a further exemplary embodiment Invention provided that at least one support plate is provided which is oriented perpendicular to the clamping plate or plates and perpendicular to the flange plates and has grid holes on the end faces, the grid of which corresponds to that of the grid holes in the flange plates.
Wie bereits erwähnt, sind bei herkömmlichen Spannvorrichtun¬ gen die Spannplatten bzw. die Spannblöcke an den Spannflächen mit Rasterbohrungen versehen. Diese Rasterbohrungen sind je- doch in der Herstellung sehr teuer. Um die Kosten der Spann¬ vorrichtung nieder zu halten und dennoch die gleiche Flexibi¬ lität bzw. Anpassungsfähigkeit an verschiedene Werkstücke zu gewährleisten, ist gemäß einem weiteren Ausführungsbeispiel der Erfindung vorgesehen, daß die Spannplatte an den Spann- flächen Spezialbohrungen aufweist, mittels denen Adapter mit korrespondierenden gleichbleibenden Bohrungen und verschie¬ denen Werkzeugaufnahmen an der Spannplatte befestigbar sind.As already mentioned, the clamping plates or the clamping blocks are provided with grid holes on the clamping surfaces in conventional clamping devices. However, these grid holes are very expensive to manufacture. In order to keep the costs of the clamping device down and still ensure the same flexibility or adaptability to different workpieces, it is provided according to a further exemplary embodiment of the invention that the clamping plate has special bores on the clamping surfaces, by means of which adapters are used Corresponding constant bores and various tool holders can be fastened to the clamping plate.
Nachfolgend werden verschiedene Ausführungsbeispiele der Er- findung anhand der Figuren der beiliegenden Zeichnungen be¬ schrieben.Various exemplary embodiments of the invention are described below with reference to the figures in the accompanying drawings.
Fig. 1 zeigt ein schematisch gehaltenes Schaubild einer CNC- Maschine, bei der eine erfindungsgemäße Spannvorrichtung zum Einsatz kommen kann, die Fig. 2 zeigt ebenso schematisch im Schaubild die Wendevorrichtung der CNC-Maschine, die Fig. 3 zeigt eine Draufsicht auf eine erfindungsgemäße Spannplatte, die Fig. 4 zeigt eine Stirnansicht der erfindungsgemäßen Spannplatte, die Fig. 5 und die Fig. 6 zeigen eine Stirn- und eine Seitenansicht einer erfindungsgemäßen Vorrichtung, dieFig. 1 shows a schematic diagram of a CNC machine in which a clamping device according to the invention can be used, Fig. 2 also shows schematically in the diagram the turning device of the CNC machine, Fig. 3 shows a plan view of a clamping plate according to the invention 4 shows an end view of the clamping plate according to the invention, FIG. 5 and FIG. 6 show a front and a side view of a device according to the invention, the
Fig. 7 zeigt die gleiche Ansicht wie die Fig. 6, wobei die Vorrichtung um 90° verdreht ist, die Fig. 8 zeigt eine Rückansicht der Flanschplatte gemäß der Fig. 5, die Fig. 9 zeigt schematisch die Spannplatte und eine Flanschplatte ge- maß einer weiteren Anordnung der Erfindung, die Fig. 10 eine Seitenansicht der Vorrichtung in der Anordnung gemäß der Fig. 9, die Fig. 11 zeigt eine Draufsicht auf eine Flanschplatte und darauf montierten Spannplatten gemäß einer weiteren An¬ ordnung der Erfindung, die Fig. 12 zeigt eine Seitenansicht der Vorrichtung in der Anordnung gemäß Fig. 11, die Fig. 13 zeigt eine Seitenansicht der Vorrichtung, die in bezug zur Fig. 12 um 90" verdreht ist, die Fig. 14 zeigt den Ausschnitt A der Fig. 12, die Fig. 15 zeigt eine weitere Draufsicht auf eine Flanschplatte und darauf angeordneter Spannplatten bei einer weiteren Anordnung der erfindungsgemäßen Spannvorrich¬ tung, die Fig. 16 zeigt eine Seitenansicht der Spannvorrich¬ tung gemäß der Fig. 15 und die Fig. 17 zeigt ein schematisch gehaltenes Schaubild eines erfindungsgemäßen Adapters.FIG. 7 shows the same view as FIG. 6, the device being rotated by 90 °, FIG. 8 shows a rear view of the flange plate according to FIG. 5, FIG. 9 shows schematically the clamping plate and a flange plate measured a further arrangement of the invention, FIG. 10 shows a side view of the device in the arrangement according to FIG. 9, FIG. 11 shows a plan view of a flange plate and clamping plates mounted thereon according to a further arrangement of the invention, FIG. 12 shows a side view 11 shows the device in the arrangement according to FIG. 11, FIG. 13 shows a side view of the device which is rotated by 90 "in relation to FIG. 12, FIG. 14 shows section A of FIG. 12, and FIG. 15 shows a further top view of a flange plate and clamping plates arranged thereon in a further arrangement of the clamping device according to the invention, FIG. 16 shows a side view of the clamping device according to FIG. 15 and FIG. 17 shows a schematic diagram of an adapter according to the invention .
Wie aus den Fig. 1 und 2 ersichtlich, ist die erfindungsge¬ mäße Spannvorrichtung 1 im Wendespanner 2 einer Vertikalma¬ schine einsetzbar.As can be seen from FIGS. 1 and 2, the tensioning device 1 according to the invention can be used in the reversible tensioner 2 of a vertical machine.
In der Fig. 1 ist der Werkzeugträger noch mit dem Bezugszei¬ chen 3 eingezeichnet.In Fig. 1, the tool carrier is still drawn with the reference number 3.
Die CNC-Maschine ist als solche nicht Gegenstand der vorlie¬ genden Erfindung und ist nach dem Stand der Technik konstru- iert. Ebenso erfolgt die Lagerung und Drehung der erfindungs¬ gemäßen Spannvorrichtung 1 im Wendespanner 2 auf herkömmliche Art und Weise.As such, the CNC machine is not the subject of the present invention and is designed according to the prior art. Likewise, the mounting and rotation of the tensioning device 1 according to the invention takes place in the reversible tensioner 2 in a conventional manner.
Die erfindungsgemäße Spannvorrichtung 1 unterscheidet sich von herkömmlichen Spannvorrichtungen 2, daß sie als variabler Bausatz ausgeführt ist. Sie weist zwei Flanschplatten 4 und mindestens eine Spannplatte 5 auf.The tensioning device 1 according to the invention differs from conventional tensioning devices 2 in that it is designed as a variable kit. It has two flange plates 4 and at least one clamping plate 5.
Wie aus den Fig. 5, 8, 9, 11 und 15 ersichtlich, ist jede Flanschplatte 4 mit Rasterbohrungen 7 versehen. Analog dazu weist die Spannplatte 5 an ihren Stirnflächen (siehe Fig. 4) Bohrungen 6 mit korrespondierendem Rasterabstand a auf.As can be seen from FIGS. 5, 8, 9, 11 and 15, each flange plate 4 is provided with grid holes 7. Analogously, the clamping plate 5 has holes 6 with a corresponding grid spacing a on its end faces (see FIG. 4).
Die Spannplatte 5 kann somit in bezug auf die Flanschplatten 4 in verschiedenen Positionen und an verschiedenen Stellen montiert werden. Ebenso können mehrere Spannplatten 5 zwi¬ schen zwei Flanschplatten 4 montiert werden. Vorteilhaft wird bei der Montage der erfindungsgemäßen Spann¬ vorrichtung 1 im Wendespanner 2 der CNC-Maschine eine der Flanschplatten 4 unmittelbar am Wendespanner montiert, wobei beispielsweise ein Nutenstein 8 vorgesehen ist, der der Dre- hung der Spannvorrichtung 1 dient.The clamping plate 5 can thus be mounted in different positions and at different locations with respect to the flange plates 4. Likewise, several clamping plates 5 can be mounted between two flange plates 4. When mounting the clamping device 1 according to the invention in the reversing clamp 2 of the CNC machine, one of the flange plates 4 is advantageously mounted directly on the reversing clamp, for example a sliding block 8 is provided which serves to rotate the clamping device 1.
An der zweiten Flanschplatte 4 kann, wie in dem Ausführungs¬ beispiel gezeigt, ein Zapfen 9 für das Gegenlager des Wende¬ spanners unmittelbar montiert sein. Selbstverständlich wäre auch eine Lösung möglich, bei der die beiden Wendeplatten 4 über Zwischenplatten mit dem Wendespanner bzw. dem Gegenlager verbunden sind.As shown in the exemplary embodiment, a pin 9 for the counter bearing of the reversing clamp can be directly mounted on the second flange plate 4. Of course, a solution would also be possible in which the two indexable inserts 4 are connected to the reversible tensioner or the counter bearing via intermediate plates.
Die Fig. 9 und 10 zeigen ein Ausführungsbeispiel, bei dem nur eine Spannplatte 5 vorgesehen ist und welches für sehr hohe Werkstücke geeignet ist.9 and 10 show an embodiment in which only one clamping plate 5 is provided and which is suitable for very high workpieces.
Die Fig. 11, 12 und 13 zeigen ein Ausführungsbeispiel mit zwei Spannplatten 5, die parallel zueinander an den Flansch- platten 4 montiert sind. Zwischen den Spannplatten 5 ist eine11, 12 and 13 show an exemplary embodiment with two clamping plates 5 which are mounted on the flange plates 4 in parallel to one another. Between the clamping plates 5 is one
Abstützplatte 10 vorgesehen. Die Abstützplatte 10 ist schmä¬ ler und dünner als die Spannplatten 5, weist sie doch an ih¬ ren Stirnseiten mindestens zwei Bohrungen 11 auf, die sich im gleichen Rasterabstand wie die Rasterbohrungen 7 auf den Flanschscheiben 4 und die Bohrungen 6 an die Stirnflächen der Spannplatten 5 befinden. Durch die Anordnung einer Abstütz- platte 10 wird die Festigkeit der Spannvorrichtung 1 wesent¬ lich erhöht.Support plate 10 is provided. The support plate 10 is narrower and thinner than the clamping plates 5, since it has at least two holes 11 on its end faces, which are at the same grid spacing as the grid holes 7 on the flange disks 4 and the holes 6 on the end faces of the clamping plates 5 are located. The strength of the tensioning device 1 is increased considerably by the arrangement of a support plate 10.
Die Fig. 14 zeigt die Verbindung einer Flanschplatte 4 mit einer Spannplatte 5. An mindestens zwei Verbindungsstellen sind Paßbuchsen 12, die vorteilhaft geschlitzt sind, vorgese¬ hen. Die Paßbuchsen ragen jeweils sowohl in die Flanschplatte 4 als auch in die Spannplatte 5. Die Paßbuchsen 12 sorgen für die exakte Ausrichtung der Flanschplatten 4 und der Spann¬ platten 5. Die eigentliche Verbindung der Flanschplatte 4 mit der Spannplatte 5 erfolgt durch Gewindebolzen 13. Die Anzahl der verwendeten Gewindebolzen 13 richtet sich nach der Bela¬ stung, der die Spannvorrichtung 1 im Betrieb ausgesetzt ist. Die Fig. 15 und 16 zeigen ein Ausführungsbeispiel der erfin¬ dungsgemäßen Spannvorrichtung 1, bei der vier Spannplatten 5 zu einem Spannturm zusammengesetzt sind. Zu diesem Zweck sind die Spannplatten 5, die um die Plattenstärke S schmäler aus¬ geführt sind als die Spannplatten 5 der zuvor beschriebenen Ausführungsbeispiele, an ihren Längskanten 5" ebenfalls mit Bohrungen 15 im Rasterabstand versehen. An einer Flachseite weisen die Spannplatten 5 korrespondierende Bohrungen 15 im gleichen Rasterabstand auf. -Auf diese Art sind die Spannplat¬ ten 5 miteinander verschraubbar, wobei zur genaueren Positio¬ nierung wiederum Paßbuchsen, aber auch Paßstifte od. dgl. Verwendung finden können.14 shows the connection of a flange plate 4 to a clamping plate 5. At at least two connection points, fitting bushes 12, which are advantageously slotted, are provided. The fitting bushes each protrude into both the flange plate 4 and the clamping plate 5. The fitting bushes 12 ensure the exact alignment of the flange plates 4 and the clamping plates 5. The actual connection of the flange plate 4 with the clamping plate 5 takes place by means of threaded bolts 13. The The number of threaded bolts 13 used depends on the load to which the tensioning device 1 is exposed during operation. 15 and 16 show an embodiment of the clamping device 1 according to the invention, in which four clamping plates 5 are assembled to form a clamping tower. For this purpose, the clamping plates 5, which are made narrower by the plate thickness S than the clamping plates 5 of the previously described exemplary embodiments, are also provided on their longitudinal edges 5 ″ with bores 15 at a grid spacing. The clamping plates 5 have corresponding bores 15 on one flat side In this way, the clamping plates 5 can be screwed to one another, with locating bushes, but also locating pins or the like, in turn, can be used for more precise positioning.
Die Spannplatten 5 sind in ihrer Gesamtheit über die Raster¬ bohrungen 7 mit den Flanschplatten 4 verschraubt. Es ist von besonderer Bedeutung, daß die bisher beschriebenen Rasterboh¬ rungen 6, 7, 15 nicht der Befestigung der Werkstücke 16 die¬ nen, sondern der Verbindung der einzelnen Teile der Spannvor- richtung miteinander.The clamping plates 5 are screwed together with the flange plates 4 via the grid holes 7. It is particularly important that the grid bores 6, 7, 15 described so far do not serve to fasten the workpieces 16, but rather to connect the individual parts of the clamping device to one another.
Zur Montage der Werkstücke 16 sind hingegen vorteilhaft keine Rasterbohrungen vorgesehen. Die Spannplatten 5 weisen an ih¬ ren Spannflächen lediglich Spezialbohrungen 17 auf, die zur Befestigung von Adaptern 18 dienen. Die Adapter 18 weisen korrespondierende Bohrungen 17' auf. Dabei kann es vorkommen, daß nicht immer sämtliche Spezialbohrungen 17 an der Spann¬ platte 5 genützt werden. In manchen Fällen wird z. B. zur Montage des Adapters 18 das Auslangen mit zwei Bohrungen 17, 17' gefunden werden. Prinzipiell werden jedoch zur Montage der Adapter 18 immer dieselben Bohrungen 17 verwendet und der Abstand D zwischen verschiedenen Bohrungsgruppen (Fig. 3) liegt in keinem bestimmten Raster. Die Anpassung an verschie¬ dene Werkstücke 16 erfolgt ausnahmslos durch verschiedene Werkstückaufnahmen 19 in den Adaptern 18. Dadurch kann ohne der Notwendigkeit eines teuren Bohrrasters auf der Spann¬ platte 5 jedes gewünschte Werkstück 16 mit unterschiedlicher Form auf der Spannplatte 5 befestigt werden. Das Niederdrücken der Werkstücke 16 erfolgt vorteilhaft durch nicht gezeigte herkömmliche hydraulisch beaufschlagte Bügel bzw. Spanneisen. In contrast, no grid bores are advantageously provided for mounting the workpieces 16. The clamping plates 5 only have special bores 17 on their clamping surfaces, which are used to fasten adapters 18. The adapters 18 have corresponding bores 17 '. It can happen that not all special bores 17 on the clamping plate 5 are always used. In some cases, e.g. B. for mounting the adapter 18 suffice with two holes 17, 17 'can be found. In principle, however, the same bores 17 are always used for mounting the adapters 18 and the distance D between different groups of bores (FIG. 3) does not lie in any particular grid. The adaptation to various workpieces 16 takes place without exception by means of different workpiece receptacles 19 in the adapters 18. As a result, any desired workpiece 16 of different shape can be fastened on the clamping plate 5 without the need for an expensive drilling grid on the clamping plate 5. The workpieces 16 are advantageously pressed down by conventional hydraulically actuated brackets or clamping irons, not shown.

Claims

t? P a t e n t a n s p r ü c h e : t? Patent claims:
1. Spannvorrichtung für Wendespanner von CNC-Ver¬ tikalmaschinen mit mindestens einer Spannplatte, die mit flachseitigen Bohrungen zur Befestigung von Spann- oder Zwischenelemente versehen ist, und an den Stirnflächen Bohrungen zur eigenen Befestigung aufweist, dadurch gekennzeichnet, daß sie als va¬ riierbarer Bausatz mit zwei drehbar gelagerten Flanschplatten (4) , die Rasterbohrungen (7) aufwei¬ sen, ausgeführt ist, wobei die Spannplatte (5) in verschiedenen Positionen mit den Flanschplatten (4) verspannbar ist.1. Clamping device for reversible clamps of CNC vertical machines with at least one clamping plate, which is provided with flat holes for fastening clamping or intermediate elements, and has holes on the end faces for own fastening, characterized in that it is a variable kit with two rotatably mounted flange plates (4), which have grid holes (7), the clamping plate (5) can be clamped to the flange plates (4) in different positions.
2. Spannvorrichtung nach Anspruch 1, dadurch gekenn¬ zeichnet, daß eine Flanschplatte (4) mit einem Ge¬ genlager versehen ist.2. Clamping device according to claim 1, characterized in that a flange plate (4) is provided with a counter bearing.
3. Spannvorrichtung nach Anspruch 1, dadurch gekenn- zeichnet, daß in mindestens zwei der Bohrungen (6) an den Stirnflächen der Spannplatte (5) und in kor¬ respondierenden Bohrungen (7) der Flanschplatten (4) Paßbuchsen (12) angeordnet sind, die sowohl in die Bohrungen (6) in der Spannplatte (5) als auch in die Bohrungen (7) in den Flanschplatten (4) ra¬ gen und die die Spannplatte (5) in bezug auf die Flanschplatten (4) positionieren.3. Clamping device according to claim 1, characterized in that fitting bushings (12) are arranged in at least two of the bores (6) on the end faces of the clamping plate (5) and in corresponding bores (7) of the flange plates (4), which protrude both into the bores (6) in the clamping plate (5) and into the bores (7) in the flange plates (4) and which position the clamping plate (5) with respect to the flange plates (4).
4. Spannvorrichtung nach Anspruch 3, dadurch gekenn- zeichnet, daß die Paßbuchsen (12) Schlitzbuchsen sind.4. Clamping device according to claim 3, characterized in that the fitting bushes (12) are slot bushings.
5. Spannvorrichtung nach Anspruch 1, dadurch gekenn¬ zeichnet, daß die Rasterbohrungen (7) in den Flanschplatten (4) ein Rechteck, vorzugsweise ein Quadrat beschreiben und daß vier Spannplatten (5) vorgesehen sind, die Rasterbohrungen (15) an min¬ destens einer Seitenkante aufweisen, deren Raster mit Rasterbohrungen (5") an mindestens einer Flach¬ seite der Spannplatte (5) übereinstimmt (Fig. 15, 16) .5. Clamping device according to claim 1, characterized gekenn¬ characterized in that the grid holes (7) in the flange plates (4) describe a rectangle, preferably a square and that four clamping plates (5) are provided which have grid holes (15) on at least one side edge, the grid of which matches grid holes (5 ") on at least one flat side of the clamping plate (5) (FIGS. 15, 16).
6. Spannvorrichtung nach mindestens einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß mindestens eine Abstützplatte (10) vorgesehen ist, die senk- recht zu der oder den Spannplatten (5) und senk¬ recht zu den Flanschplatten (4) ausgerichtet ist und an den Stirnflächen Rasterbohrungen (11) auf¬ weist, deren Raster mit dem der Rasterbohrungen (7) in den Flanschplatten (4) übereinstimmt.6. Clamping device according to at least one of claims 1 to 5, characterized in that at least one support plate (10) is provided which is perpendicular to the one or more clamping plates (5) and perpendicular to the flange plates (4) and has grid bores (11) on the end faces, the grid of which corresponds to that of the grid bores (7) in the flange plates (4).
Spannvorrichtung nach Anspruch 1, dadurch gekenn¬ zeichnet, daß die Breite (B) der Abstützplattten (10) geringer als die Breite (BS) der Spannplatten (5) ist.Clamping device according to claim 1, characterized gekenn¬ characterized in that the width (B) of the support plates (10) is less than the width (BS) of the clamping plates (5).
8. Spannvorrichtung insbesondere nach einem der An¬ sprüche 1 bis 7, dadurch gekennzeichnet, daß die Spannplatte (5) an den Spannflächen Spezialbohrungen (17) aufweist, mittels denen Adapter (18) mit korre- spondierenden Bohrungen (17) und verschiedenen Werk¬ zeugaufnahmen (19) an der Spannplatte (5) befestig¬ bar sind. 8. Clamping device in particular according to one of claims 1 to 7, characterized in that the clamping plate (5) has special bores (17) on the clamping surfaces, by means of which adapters (18) with corresponding bores (17) and various tools Tool holders (19) can be fastened to the clamping plate (5).
PCT/AT1990/000109 1989-12-01 1990-11-09 Tensioning device, especially for spiral tensioners of cnc vertical machines WO1991008082A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT273889A AT395953B (en) 1989-12-01 1989-12-01 CLAMPING DEVICE FOR REVERSE CLAMPING OF CNC VERTICAL MACHINES
ATA2738/89 1989-12-01

Publications (1)

Publication Number Publication Date
WO1991008082A1 true WO1991008082A1 (en) 1991-06-13

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ID=3539518

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT1990/000109 WO1991008082A1 (en) 1989-12-01 1990-11-09 Tensioning device, especially for spiral tensioners of cnc vertical machines

Country Status (2)

Country Link
AT (1) AT395953B (en)
WO (1) WO1991008082A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0526735A2 (en) * 1991-08-06 1993-02-10 GIDDINGS & LEWIS GmbH Pallet for work pieces used as work support in production- or assembly systems

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Publication number Priority date Publication date Assignee Title
GB161385A (en) * 1920-02-11 1921-04-14 Thomas Greenwood Improvements in jigs
GB1217741A (en) * 1968-02-15 1970-12-31 Keith Fulton Scott Thompson Reusable constructional element for use in constructing jigs, workholders and like fixtures
FR2335303A1 (en) * 1975-12-20 1977-07-15 Blumle Rudi DEVICE FOR THE PRECISE ASSEMBLY OF BLANKETS TO BE MACHINED, AND METHOD FOR THE MANUFACTURE OF THIS DEVICE
FR2465555A1 (en) * 1979-09-20 1981-03-27 Sagnial Henri Plate for mounting and clamping workpiece - uses through-bores to locate bolt pins supporting workpiece and clamps

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Publication number Priority date Publication date Assignee Title
US3540128A (en) * 1967-03-31 1970-11-17 Charles E Giles Quick set-up production plate
DE2557701C3 (en) * 1975-12-20 1983-11-24 Blümle, Rudi, 7000 Stuttgart Process for the production of the mounting plate of a device for precisely fitting workpieces
AT381893B (en) * 1981-11-06 1986-12-10 Orlik Josef CLAMPING DEVICE
DE3612593C2 (en) * 1986-04-15 1994-01-27 Dieter Ing Grad Reis Carrier for clamping workpieces
US4711437A (en) * 1986-09-02 1987-12-08 Te-Co. Workpiece securing apparatus for a machine tool

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB161385A (en) * 1920-02-11 1921-04-14 Thomas Greenwood Improvements in jigs
GB1217741A (en) * 1968-02-15 1970-12-31 Keith Fulton Scott Thompson Reusable constructional element for use in constructing jigs, workholders and like fixtures
FR2335303A1 (en) * 1975-12-20 1977-07-15 Blumle Rudi DEVICE FOR THE PRECISE ASSEMBLY OF BLANKETS TO BE MACHINED, AND METHOD FOR THE MANUFACTURE OF THIS DEVICE
FR2465555A1 (en) * 1979-09-20 1981-03-27 Sagnial Henri Plate for mounting and clamping workpiece - uses through-bores to locate bolt pins supporting workpiece and clamps

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0526735A2 (en) * 1991-08-06 1993-02-10 GIDDINGS & LEWIS GmbH Pallet for work pieces used as work support in production- or assembly systems
EP0526735A3 (en) * 1991-08-06 1993-06-16 Giddings & Lewis Gmbh Pallet for work pieces used as work support in production- or assembly systems

Also Published As

Publication number Publication date
AT395953B (en) 1993-04-26
ATA273889A (en) 1992-09-15

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