EP1655104B1 - Clamping device for clamping pieces - Google Patents
Clamping device for clamping pieces Download PDFInfo
- Publication number
- EP1655104B1 EP1655104B1 EP20050110394 EP05110394A EP1655104B1 EP 1655104 B1 EP1655104 B1 EP 1655104B1 EP 20050110394 EP20050110394 EP 20050110394 EP 05110394 A EP05110394 A EP 05110394A EP 1655104 B1 EP1655104 B1 EP 1655104B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- clamping
- support
- clamping device
- clamp
- force
- 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.)
- Active
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 18
- 238000005452 bending Methods 0.000 description 10
- 229910052742 iron Inorganic materials 0.000 description 9
- 238000003754 machining Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
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
- B25B5/00—Clamps
- B25B5/06—Arrangements for positively actuating 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
- B25B5/061—Arrangements for positively actuating jaws with fluid drive
- B25B5/062—Arrangements for positively actuating jaws with fluid drive with clamping means pivoting around an axis parallel to the pressing direction
Definitions
- the invention relates to a clamping device for clamping objects, in particular tools, workpieces or devices, in processing machines, with a base with fastening means for fixing the clamping device to a machine table of the processing machine, with a clamping means for clamping the article to the base by means of a piston rod to be moved and a base support for the article, such that the article is tensioned between the clamping iron and the support during clamping.
- Such a tensioning device is from the DE 101 37 887 A1 known.
- Clamping devices are used for clamping objects and are well known, for example, as a swing clamp.
- a housing of the swing clamp is bolted to a base on a machine table.
- a piston is hydraulically retractable, which carries at its free end the clamping iron.
- the piston is first pivoted about its longitudinal axis. Then lowered by further retraction of the piston, the clamping iron on the object, usually a workpiece, from and clamps this on the machine table.
- the machine table itself serves as an abutment for applying the clamping force.
- An example of such a swing clamp is from the DE 102 52 549 A1 known.
- a disadvantage of this arrangement is that the machine table itself is integrated into the power flow for clamping the workpiece.
- the workpiece exerts a compressive force on the machine table, while a fastening screw for attaching the housing of the swing clamp on the machine table, which faces the workpiece, exerts a tensile force on the machine table.
- Attachment sections on the side of the housing facing away from the workpiece in turn exert a compressive force on the machine table.
- This will be the Machine table subjected to bending and deformed accordingly. This is undesirable in today often required high-precision machining of workpieces, since it comes at the expense of machining accuracy. Furthermore, due to the deformations, shifts of the workpiece may occur with further deteriorated machining accuracy.
- the DE 101 37 887 A1 refers to a tensioning device which has a clamping element rotatably mounted about an axis between a basic position and a clamping position with a clamping surface.
- a pressurized piston is provided, which rotates the clamping element about its axis.
- a basic body of the piston, the clamping element and a support element are assigned, wherein the support element in clamping position opposite to the clamping element.
- the tensioning device can be screwed to the machine table or the like by means of screws which are guided through bores in the base of the tensioning device. These are seen from a plan view of the clamping device (perpendicular to the plane of the machine table) at the corners of the base. Due to this positioning, machining forces exerted on a tensioned workpiece can be unfavorably introduced into the machine table or the like and lead to undesired deformations of the machine table and the clamping device itself and associated higher manufacturing tolerances.
- the invention is based on the problem, a clamping device of the type mentioned in such a way that on the tensioned object acting forces, such as machining forces are derived via the clamping device in the machine table or the like that low manufacturing tolerances can be achieved.
- the clamping device according to the invention is characterized in that a fixing means for the clamping device seen in the clamping direction is aligned with the support for the workpiece.
- a fastener or one of a plurality of fastening means is arranged aligned in the clamping direction with the support for the workpiece.
- the forces acting on the workpiece forces are then introduced without lever arm on this fastener in the machine table or the like, and thus also free of bending moment.
- the fastening means are arranged so that the sum of the due seen by machining forces by the respective fasteners transmitted forces in the clamping direction aligned to support, attack.
- the forces are derived without lever arm in the machine table or the like. Deformations on the machine table or the like by the machining forces are avoided, so that a high manufacturing accuracy (low tolerances) can be achieved.
- the object ie in general the workpiece is clamped according to a development of the invention between the base and the clamping iron. It results in a closed power circuit from the clamping iron on the workpiece in the base, the housing and the piston back into the clamp iron. Force transmission due to the clamping forces in the machine table are completely avoided. Accordingly, no bending stresses and deformations caused thereby occur in the machine table or workpiece displacements.
- the clamping device according to the invention is therefore also ideal for clamping workpieces for high-precision machining. It is therefore possible to design very simple clamping devices.
- the support is adjustable in height, wherein it can be fixed in height. This can be done by a screw with self-locking thread or, in fluid-actuated bearing, by means of a clamping piston or the like.
- clamping devices with such a support the workpiece is first positioned and then placed the support for abutment on the workpiece and finally operated, for example, the swing clamp.
- This sequence can be controlled by suitable connecting valves, so that first the support is actuated, which is preferably pressure medium-actuated and can be acted upon by a Zuschaltventil with pressure medium. Then the support is fixed in height and finally the actual tensioning device, such as the swing clamp, operated.
- the counter bearing exerts at least one force component at right angles to the clamping force, which counteracts the bending moment introduced into the piston by the clamping force.
- This leads to the force introduced by the counter bearing is not or only partially at the expense of the clamping force.
- Such an abutment can be a ramp with a sloping slope to the clamping iron have, which cooperates with a wedge. This results in a force exerted by the abutment force on the piston, which has both a force component perpendicular to the clamping force, as well as parallel to the clamping force.
- the anvil also have a pressure fluid-operated piston, which is directed at right angles to the clamping force. In this case, an opposing force directed exclusively at right angles to the clamping force results, so that the clamping force remains unaffected.
- Fig. 1 shows a swing clamp 10.
- the swing clamp 10 has a housing 11 and a piston rod 12 which is hydraulically retracted in the housing 11 in a conventional manner.
- a clamping arm 13 is attached, which also carries a pressure piece 14 in a conventional manner.
- the pressure member 14 is the crowned head of a screw which is screwed with its threaded bolt 15 in a thread on the clamping iron 13 and secured by a lock nut 16 in a likewise known manner.
- a base 17 is formed, in which, stepped in the present case, holes 18 are recessed.
- the holes 18 serve to receive fastening screws, by means of which the swing clamp 10 can be screwed to a machine table.
- the holes 18 are thus at the base arranged as fastening means for the swing clamp 10. In the vicinity of one or more of these holes 18 and the pressure medium supply for the swing clamp 10 is provided.
- the base 17 relative to the housing 11 loads so far that a web 19 of the base 17 is disposed below the pressure member 14.
- a support 20 is arranged for a workpiece. This support 20 is in turn screwed in the present case in the web 19 and secured by a lock nut 21.
- the clamping arm 13 is designed as a two-armed lever and mounted by means of a hinge 25 on the piston rod 12 pivotable about a perpendicular to the piston longitudinal axis pivot axis. At its one end, the clamping arm 13 carries the pressure piece 14, which in turn is screwed into the clamp 13 and secured by means of the lock nut 16.
- the clamp 13 carries a counter-pressure piece 26, which is also designed as a screw and screwed into the clamp 13 and secured by a lock nut 27.
- a support 28 is screwed onto the base 17, which is adjustable by a screw 29 in height.
- a workpiece 30 is in the swing clamp 23 according to Fig. 2 directly between the pressure piece 14 and the base 17, by means of which the swing clamp 23 is attached to the machine table 31, tensioned. This results in a closed power circuit, in which, however, the counter bearing 24 is included.
- Fig. 3 shows a tensioner 32 analogous to the swing clamp 23 according to Fig. 2 , So that the same components are again denoted by the same reference numerals.
- the support 20 and / or the abutment 24 are pressure medium-actuated, specifically hydraulically actuated, and put on when clamping a workpiece in the end position.
- each pressure medium cylinder 33 serve.
- the tensioner 32 has according to Fig. 3 on the in Fig. 3 left side as an abutment 24 in its (end) position defined counter-pressure piece 26, while the support 20 has an adjustable end position.
- the tensioner 32 is formed very symmetrical. It would therefore also easily possible to provide a pressure piece 14 on both arms of the clamping iron 13 and to arrange a support 20 correspondingly on the base 17 on both sides of the housing 11 so that two workpieces could be clamped simultaneously with the tensioner 32.
- FIG. 3 can be seen well, the lower sides of the counter-pressure member 26 and the pressure member 14 in perpendicular to the piston axis (piston rod 12) seen direction aligned. This avoids side movements.
- a swing clamp 34 is shown, the largely the swing clamp 10 according to Fig. 1 corresponds, so that the same components are designated by the same reference numerals.
- the swing clamp 32 according to Fig. 3 Here is the base 17 but not arranged as a collar on the housing 11 as it were. Rather, the housing 11 is arranged standing on the base 17.
- the clamps 35 are fixed in a conventional manner in T-slots on the machine table, so that there is a very flexible choice of clamping position.
- a swing clamp 36 analogous to the swing clamp 10 according to Fig. 1 shown.
- the support 20 is here analogous to the support of the tensioner 32 according to Fig. 3 formed, namely with a pressure medium cylinder 33.
- the pressure medium cylinder 33 is controlled via a Zuschaltventil 37, so that only one pressure medium line, with double-acting elements two lines are required.
- the connection valve 37 regulates the sequence "applying to the workpiece and clamping the workpiece".
- an intermediate flange 17a ( FIG. 7 and FIG. 8 ) create a unit which can be installed on or in a device and which does not initiate deformations in the device itself. It is important that the clamping elements and contactors are attached to the intermediate flange 17a and the intermediate flange 17a in turn in the device.
- the support member 40 is formed as an inclined plane.
- a wedge 42 slides on the clamp 13 on a ramp 43 of the abutment 40. Due to the angular position of the wedge 42 and the ramp 43 results in a force acting perpendicular to the clamping force component, which the bending moment on the piston 12th counteracts due to the clamping force.
- a force acting perpendicular to the clamping force component which the bending moment on the piston 12th counteracts due to the clamping force.
- the angular position and a parallel to the clamping force acting component which is no longer so strong in the present case, so that a much larger proportion in the provided by the piston 12 force can actually be converted into the clamping force.
- a hydraulic piston 44 which in a cylinder bore 45 of the thrust bearing 41st is guided.
- the pressure medium of the hydraulic piston 44 can be effected via corresponding Zuschaltventile.
- the vote of the force exerted by the hydraulic piston 44 on the clamping arm 13 counterforce can be controlled by a vote of the piston surfaces of the hydraulic piston 44 and the piston rod 12.
- the in the Fig. 1 to 11 shown clamping devices are pressure medium actuated, in particular by means of hydraulic oil. It is also conceivable to actuate the clamping devices electrically, for example via electromagnets. This does not actually happen in practice.
- a fastening means is aligned with a line formed by the pressure piece 14 and the support 20 or comes as close as possible.
- the fastener in question should be arranged in the clamping direction aligned with the support 20.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
Description
Die Erfindung betrifft eine Spannvorrichtung zum Spannen von Gegenständen, insbesondere Werkzeugen, Werkstücken oder Vorrichtungen, in Bearbeitungsmaschinen, mit einer Basis mit Befestigungsmitteln zum Befestigen der Spannvorrichtung an einem Maschinentisch der Bearbeitungsmaschine, mit einem zum Spannen des Gegenstandes auf die Basis mittels einer Kolbenstange zu bewegbaren Spanneisen und einem an der Basis angeordneten Auflager für den Gegenstand, derart, dass der Gegenstand beim Spannen zwischen dem Spanneisen und dem Auflager gespannt ist.The invention relates to a clamping device for clamping objects, in particular tools, workpieces or devices, in processing machines, with a base with fastening means for fixing the clamping device to a machine table of the processing machine, with a clamping means for clamping the article to the base by means of a piston rod to be moved and a base support for the article, such that the article is tensioned between the clamping iron and the support during clamping.
Eine solche Spannvorrichtung ist aus der
Spannvorrichtungen dienen zum Spannen von Gegenständen und sind beispielsweise auch als Schwenkspanner allgemein bekannt. Ein Gehäuse des Schwenkspanners wird mit einer Basis auf einem Maschinentisch verschraubt. In das Gehäuse ist ein Kolben hydraulisch einziehbar, der an seinem freien Ende das Spanneisen trägt. Durch Einziehen des Kolbens in das Gehäuse wird der Kolben zunächst um seine Längsachse verschwenkt. Sodann senkt sich durch weiteres Einziehen des Kolbens das Spanneisen auf den Gegenstand, meist ein Werkstück, ab und spannt dieses auf dem Maschinentisch. Der Maschinentisch selbst dient dabei als Gegenlager zum Aufbringen der Spannkraft. Ein Beispiel für einen solchen Schwenkspanner ist aus der
Nachteilig bei dieser Anordnung ist, dass der Maschinentisch selbst in den Kraftfluss zum Spannen des Werkstücks eingebunden ist. Das Werkstück übt eine Druckkraft auf den Maschinentisch aus, während eine Befestigungsschraube zum Befestigen des Gehäuses des Schwenkspanners auf dem Maschinentisch, welche dem Werkstück zugewandt ist, eine Zugkraft auf den Maschinentisch ausübt. Befestigungsabschnitte auf der dem Werkstück abgewandten Seite des Gehäuses üben wiederum eine Druckkraft auf den Maschinentisch aus. Hierdurch wird der Maschinentisch auf Biegung beansprucht und entsprechend verformt. Dieses ist bei der heute oft geforderten hochgenauen Bearbeitung von Werkstücken unerwünscht, da es zu Lasten der Bearbeitungsgenauigkeit geht. Ferner kann es aufgrund der Verformungen zu Verschiebungen des Werkstücks mit weiter verschlechterter Bearbeitungsgenauigkeit kommen.A disadvantage of this arrangement is that the machine table itself is integrated into the power flow for clamping the workpiece. The workpiece exerts a compressive force on the machine table, while a fastening screw for attaching the housing of the swing clamp on the machine table, which faces the workpiece, exerts a tensile force on the machine table. Attachment sections on the side of the housing facing away from the workpiece in turn exert a compressive force on the machine table. This will be the Machine table subjected to bending and deformed accordingly. This is undesirable in today often required high-precision machining of workpieces, since it comes at the expense of machining accuracy. Furthermore, due to the deformations, shifts of the workpiece may occur with further deteriorated machining accuracy.
Die
Hiervon ausgehend liegt der Erfindung das Problem zugrunde, eine Spannvorrichtung der eingangs genannten Art derart weiterzubilden, dass auf den gespannten Gegenstand einwirkende Kräfte, wie Bearbeitungskräfte so über die Spannvorrichtung in den Maschinentisch oder dergleichen abgeleitet werden, dass geringe Fertigungstoleranzen erzielt werden.Proceeding from this, the invention is based on the problem, a clamping device of the type mentioned in such a way that on the tensioned object acting forces, such as machining forces are derived via the clamping device in the machine table or the like that low manufacturing tolerances can be achieved.
Zur Lösung dieses Problems ist die erfindungsgemäße Spannvorrichtung dadurch gekennzeichnet, dass ein Befestigungsmittel für die Spannvorrichtung in Spannrichtung gesehen mit dem Auflager für das Werkstück fluchtet.To solve this problem, the clamping device according to the invention is characterized in that a fixing means for the clamping device seen in the clamping direction is aligned with the support for the workpiece.
Ein Befestigungsmittel oder eines von mehreren Befestigungsmitteln ist in Spannrichtung gesehen mit der Auflage für das Werkstück fluchtend angeordnet. Die auf das Werkstück wirkenden Kräfte werden dann ohne Hebelarm über dieses Befestigungsmittel in den Maschinentisch oder dergleichen eingeleitet und damit auch biegemomentfrei. Wo es aus Platzgründen nicht möglich ist, ein bzw. eines der Befestigungsmittel fluchtend zur Auflage anzuordnen, sind die Befestigungsmittel so angeordnet, dass die Summe der aufgrund von Bearbeitungskräften durch die betreffenden Befestigungsmittel durchgeleiteten Kräfte in Spannrichtung gesehen zur Auflage fluchtend, angreifen. Auch dabei werden die Kräfte ohne Hebelarm in den Maschinentisch oder dergleichen abgeleitet. Verformungen am Maschinentisch oder dergleichen durch die Bearbeitungskräfte werden vermieden, so dass eine hohe Fertigungsgenauigkeit (geringe Toleranzen) erzielt werden.A fastener or one of a plurality of fastening means is arranged aligned in the clamping direction with the support for the workpiece. The forces acting on the workpiece forces are then introduced without lever arm on this fastener in the machine table or the like, and thus also free of bending moment. Where it is not possible for reasons of space to arrange one or one of the fastening means in alignment with the support, the fastening means are arranged so that the sum of the due seen by machining forces by the respective fasteners transmitted forces in the clamping direction aligned to support, attack. Also, the forces are derived without lever arm in the machine table or the like. Deformations on the machine table or the like by the machining forces are avoided, so that a high manufacturing accuracy (low tolerances) can be achieved.
Der Gegenstand, also im Allgemeinen das Werkstück, wird nach einer Weiterbildung der Erfindung zwischen der Basis und dem Spanneisen eingespannt. Es ergibt sich ein geschlossener Kraftkreislauf vom Spanneisen über das Werkstück in die Basis, das Gehäuse und den Kolben wieder in das Spanneisen. Krafteinleitungen infolge der Spannkräfte in den Maschinentisch sind vollständig vermieden. Demnach treten auch keine Biegebeanspruchungen und dadurch hervorgerufene Verformungen in dem Maschinentisch oder Werkstückverschiebungen auf. Die erfindungsgemäße Spannvorrichtung ist damit auch zum Spannen von Werkstücken für die hochgenaue Bearbeitung hervorragend geeignet. Es lassen sich deshalb sehr einfache Spannvorrichtungen gestalten.The object, ie in general the workpiece is clamped according to a development of the invention between the base and the clamping iron. It results in a closed power circuit from the clamping iron on the workpiece in the base, the housing and the piston back into the clamp iron. Force transmission due to the clamping forces in the machine table are completely avoided. Accordingly, no bending stresses and deformations caused thereby occur in the machine table or workpiece displacements. The clamping device according to the invention is therefore also ideal for clamping workpieces for high-precision machining. It is therefore possible to design very simple clamping devices.
Nach einer Weiterbildung der Erfindung ist das Auflager höhenverstellbar, wobei es auch in der Höhe festsetzbar ist. Dieses kann durch eine Schraube mit selbsthemmendem Gewinde oder, bei druckmittelbetätigtem Auflager, mittels eines Klemmkolbens oder dergleichen geschehen. Bei Spannvorrichtungen mit einem derartigen Auflager wird zunächst das Werkstück positioniert und sodann das Auflager zur Anlage an das Werkstück gebracht und schließlich der beispielsweise Schwenkspanner betätigt. Diese Reihenfolge lässt sich durch geeignete Zuschaltventile regeln, so dass zunächst das Auflager betätigt wird, welches vorzugsweise druckmittelbetätigt und über ein Zuschaltventil mit Druckmittel beaufschlagbar ist. Sodann wird das Auflager in der Höhe festgesetzt und schließlich die eigentliche Spannvorrichtung, beispielsweise der Schwenkspanner, betätigt.According to a development of the invention, the support is adjustable in height, wherein it can be fixed in height. This can be done by a screw with self-locking thread or, in fluid-actuated bearing, by means of a clamping piston or the like. When clamping devices with such a support, the workpiece is first positioned and then placed the support for abutment on the workpiece and finally operated, for example, the swing clamp. This sequence can be controlled by suitable connecting valves, so that first the support is actuated, which is preferably pressure medium-actuated and can be acted upon by a Zuschaltventil with pressure medium. Then the support is fixed in height and finally the actual tensioning device, such as the swing clamp, operated.
Bei solchen Spannvorrichtungen wird infolge der Spannkraft ein Biegemoment auf die Kolbenstange ausgeübt. Um dem entgegenzuwirken, ist es vorteilhaft, ein Gegenlager vorzusehen, welches dem durch die Spannkraft eingeleiteten Biegemoment entgegenwirkt. Dieses Gegenlager sollte ebenfalls an der Basis angeordnet sein, so dass auch durch dieses Gegenlager keine Beigemomente in den Maschinentisch eingeleitet werden.In such tensioning devices, a bending moment is exerted on the piston rod as a result of the clamping force. To counteract this, it is advantageous to provide an abutment which counteracts the introduced by the clamping force bending moment. This counter bearing should also be arranged on the base, so that no Beigemomente be introduced into the machine by this counter bearing.
Vorzugsweise übt das Gegenlager wenigstens eine Kraftkomponente rechtwinklig zur Spannkraft aus, welche dem durch die Spannkraft in den Kolben eingeleiteten Biegemoment entgegenwirkt. Dieses führt dazu, dass die durch das Gegenlager eingeleitete Kraft nicht oder nur zum Teil zu Lasten der Spannkraft geht. Ein solches Gegenlager kann eine Rampe mit einer zum Spanneisen abfallenden Schräge aufweisen, die mit einem Keil zusammenwirkt. Dabei ergibt sich eine durch das Gegenlager ausgeübte Kraft auf den Kolben, welche sowohl eine Kraftkomponente rechtwinklig zur Spannkraft, als auch parallel zur Spannkraft aufweist. Zusätzlich oder alternativ kann das Gegenlager auch einen druckmittelbetätigten Kolben aufwiesen, welcher rechtwinklig zur Spannkraft gerichtet ist. In diesem Fall ergibt sich eine ausschließlich rechtwinklig zur Spannkraft gerichtete Gegenkraft, so dass die Spannkraft unbeeinflusst bleibt.Preferably, the counter bearing exerts at least one force component at right angles to the clamping force, which counteracts the bending moment introduced into the piston by the clamping force. This leads to the force introduced by the counter bearing is not or only partially at the expense of the clamping force. Such an abutment can be a ramp with a sloping slope to the clamping iron have, which cooperates with a wedge. This results in a force exerted by the abutment force on the piston, which has both a force component perpendicular to the clamping force, as well as parallel to the clamping force. Additionally or alternatively, the anvil also have a pressure fluid-operated piston, which is directed at right angles to the clamping force. In this case, an opposing force directed exclusively at right angles to the clamping force results, so that the clamping force remains unaffected.
Die Erfindung wird nachfolgend anhand von in der Zeichnung dargestellten Ausführungsbeispielen näher erläutert. Es zeigen:
- Fig. 1
- ein erstes Ausführungsbeispiel für eine Spanneinrichtung in Seitenansicht, das jedoch nicht in den Schutzbereich, wie durch die Ansprüche definiert, fällt,
- Fig. 2
- ein zweites Ausführungsbeispiel für eine Spanneinrichtung in perspektivischer Darstellung, das jedoch nicht in den Schutzbereich, wie durch die Ansprüche definiert, fällt,
- Fig. 3
- ein drittes Ausführungsbeispiel für eine Spanneinrichtung in Seitenansicht,
- Fig. 4
- ein viertes Ausführungsbeispiel für eine Spanneinrichtung in Seitenansicht, das jedoch nicht in den Schutzbereich, wie durch die Ansprüche definiert, fällt,
- Fig. 5
- die Spanneinrichtung gemäß
Fig. 4 in Draufsicht, - Fig. 6
- ein fünftes Ausführungsbeispiel für eine Spanneinrichtung in Seitenansicht,
- Fig. 7
- eine Variante zum Ausführungsbeispiel gemäß
Fig. 6 , - Fig. 8
- eine weitere Variante zum Ausführungsbeispiel gemäß
Fig. 6 , - Fig. 9
- die Spanneinrichtung gemäß
Fig. 6 in Draufsicht, teilweise geschnitten, - Fig. 10
- ein sechstes Ausführungsbeispiel für eine Spanneinrichtung in Seitenansicht, das jedoch nicht in den Schutzbereich, wie durch die Ansprüche definiert, fällt, und
- Fig. 11
- ein weiteres Ausführungsbeispiel für eine Spanneinrichtung in Seitenansicht, das jedoch nicht in den Schutzbereich, wie durch die Ansprüche definiert, fällt.
- Fig. 1
- a first embodiment of a clamping device in side view, but does not fall within the scope as defined by the claims,
- Fig. 2
- a second embodiment of a tensioning device in a perspective view, but does not fall within the scope of protection as defined by the claims,
- Fig. 3
- a third embodiment of a clamping device in side view,
- Fig. 4
- A fourth embodiment of a tensioning device in side view, but does not fall within the scope of protection as defined by the claims,
- Fig. 5
- the tensioning device according to
Fig. 4 in plan view, - Fig. 6
- a fifth embodiment of a clamping device in side view,
- Fig. 7
- a variant of the embodiment according to
Fig. 6 . - Fig. 8
- a further variant of the embodiment according to
Fig. 6 . - Fig. 9
- the tensioning device according to
Fig. 6 in plan view, partially cut, - Fig. 10
- a sixth embodiment of a clamping device in side view, but does not fall within the scope of protection as defined by the claims, and
- Fig. 11
- a further embodiment of a clamping device in side view, but does not fall within the scope as defined by the claims falls.
Am Gehäuse 11 ist eine Basis 17 angeformt, in welche, im vorliegenden Fall abgestufte, Bohrungen 18 eingelassen sind. Die Bohrungen 18 dienen zur Aufnahme von Befestigungsschrauben, mittels derer der Schwenkspanner 10 an einem Maschinentisch angeschraubt werden kann. Die Bohrungen 18 sind also gleichsam an der Basis angeordnete Befestigungsmittel für den Schwenkspanner 10. In der Nähe einer oder mehrer dieser Bohrungen 18 ist auch die Druckmittelversorgung für den Schwenkspanner 10 vorgesehen.On the
Wie in
Bei dem Schwenkspanner 10 wird also das Werkstück zwischen dem Druckstück 14 und dem Auflager 20 gespannt. Die Basis 17 dient demnach über das Auflager 20 als Gegenlager für die durch das Druckstück 14 auf das Werkstück ausgeübten Spannkräfte. Innerhalb des Schwenkspanners 10 ergibt sich ein geschlossener Kraftkreislauf, wie durch den fettgedruckten Kreis 22 illustriert.In the
Bei dem Schwenkspanner 10 gemäß
Das Spanneisen 13 ist als zweiarmiger Hebel ausgebildet und mittels eines Gelenks 25 an der Kolbenstange 12 schwenkbar um eine senkrecht zur Kolbenlängsachse verlaufende Schwenkachse gelagert. An seinem einen Ende trägt das Spanneisen 13 das Druckstück 14, welches wiederum in das Spanneisen 13 eingeschraubt und mittels der Kontermutter 16 gesichert ist.The clamping
An seinem gegenüberliegenden Arm trägt das Spanneisen 13 ein Gegendruckstück 26, welches ebenfalls als Schraube ausgebildet und in das Spanneisen 13 eingeschraubt sowie mittels einer Kontermutter 27 gesichert ist. Unterhalb des Druckstücks 26 ist auf die Basis 17 ein Auflager 28 aufgeschraubt, welches über eine Schraube 29 in seiner Höhe einstellbar ist.At its opposite arm, the
Ein Werkstück 30 wird bei dem Schwenkspanner 23 gemäß
Im übrigen besitzt der Spanner 32 gemäß
Wie
As
In
In
Ähnlich wie in
Wie bereits im Zusammenhang mit
Bei dem Schwenkspanner 39 gemäß
Die in den
The in the
In den
- 1010
- Schwenkspannerswing clamps
- 1111
- Gehäusecasing
- 1212
- Kolbenstangepiston rod
- 1313
- Spanneisenclamps
- 1414
- DruckstückPressure piece
- 1515
- Schraubenbolzenbolt
- 1616
- Kontermutterlocknut
- 1717
- BasisBase
- 1818
- Bohrungdrilling
- 1919
- Stegweb
- 2020
- AuflagerIn stock
- 2121
- Kontermutterlocknut
- 2222
- Kreiscircle
- 2323
- Schwenkspannerswing clamps
- 2424
- Gegenlagerthrust bearing
- 2525
- Gelenkjoint
- 2626
- GegendruckstückCounterpressure member
- 2727
- Kontermutterlocknut
- 2828
- AuflagerIn stock
- 2929
- Schraubescrew
- 3030
- Werkstückworkpiece
- 3131
- Maschinentischmachine table
- 3232
- SpannerStretcher
- 3333
- DruckmittelzylinderPressure cylinder
- 3434
- Schwenkspannerswing clamps
- 3535
- Spannpratzenclamps
- 3636
- Schwenkspannerswing clamps
- 3737
- Zuschaltventilsequence valve
- 3838
- Schwenkspannerswing clamps
- 3939
- Schwenkspannerswing clamps
- 4040
- Gegenlagerthrust bearing
- 4141
- Gegenlagerthrust bearing
- 4242
- Keilwedge
- 4343
- Ramperamp
- 4444
- Kolbenpiston
- 4545
- Zylinderbohrungbore
Claims (8)
- Clamping device for clamping objects, in particular tools, work pieces (30) or devices, in processing machines, with a base (17) with fastening means (18, 35) for fastening the clamping device on a machine table of the processing machine, with a clamp (13) that can be moved by means of a piston rod (12) to clamp the object onto the base and a support (20), arranged on the base (17), for the object, such that on clamping, the object is clamped between the clamp (13) and the support (20), characterised in that a fastening means for the clamping device seen in the direction of clamping is aligned with the support (20) for the work piece (30).
- Clamping device according to claim 1, characterised in that the support (20) is height adjustable in such a way that the support (20) is initially applied onto the object, the support (20) then locks and subsequently the piston rod (12) is impinged with the pressurising means to build up the clamping force.
- Clamping device according to claim 2, characterised in that the support (20) is operated with pressurising agent and can be impinged with pressurising means through a sequence valve (37).
- Clamping device according to one of the claims 1 to 3, characterised by a thrust bearing (24, 40, 41), likewise arranged on the base (17), for the clamp (13).
- Clamping device according to claim 4, characterised in that the thrust bearing (40, 41) exerts a force onto the clamp (13), said force being directed, at least with one force component, at right angles to the clamping force.
- Clamping device according to claim 5, characterised in that the thrust bearing (40) possesses a platform (43) that slopes down to the clamp (13) and which cooperates with a wedge (42) on the clamp (13).
- Clamping device according to claim 4, characterised in that the thrust bearing (41) possesses a piston (44) operated with pressurising means, said piston (44) being directed at right angles to the clamping direction.
- Clamping device according to claim 4, characterised in that the thrust bearing (24) is operated by pressurising means.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410053925 DE102004053925A1 (en) | 2004-11-05 | 2004-11-05 | Clamping device for clamping objects |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1655104A2 EP1655104A2 (en) | 2006-05-10 |
EP1655104A3 EP1655104A3 (en) | 2006-07-19 |
EP1655104B1 true EP1655104B1 (en) | 2012-06-13 |
Family
ID=35708756
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20050110394 Active EP1655104B1 (en) | 2004-11-05 | 2005-11-04 | Clamping device for clamping pieces |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1655104B1 (en) |
DE (1) | DE102004053925A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115052750A (en) * | 2019-12-27 | 2022-09-13 | 微技术株式会社 | Screen printing apparatus and screen printing method |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3334401A1 (en) * | 1983-09-23 | 1985-04-04 | A. Römheld GmbH & Co KG, 6312 Laubach | Clamping and supporting unit for machine tools |
US4620695A (en) * | 1984-08-28 | 1986-11-04 | Davan Industries | Power clamping apparatus |
DE10135280A1 (en) * | 2001-07-19 | 2003-02-06 | Rudolf Kohlert | Clamping element for flexible clamping of workpieces |
FR2827803B1 (en) * | 2001-07-30 | 2003-10-10 | Applic Des Nouvelles Technolog | CLAMP |
DE10137887B4 (en) | 2001-08-02 | 2006-11-23 | Frank Entzmann | jig |
US6929254B2 (en) * | 2002-06-24 | 2005-08-16 | Phd, Inc. | Swing-arm clamp |
US6932333B2 (en) * | 2002-08-30 | 2005-08-23 | Gerd Bruno Bode | Swing clamp |
DE10252549A1 (en) | 2002-11-08 | 2004-05-27 | A. Römheld GmbH & Co KG | Hydraulic clamping tool esp. for work pieces on machine tables etc. with tool clamping direction and piston rod direction being the same, and residual play for piston rod and clamping piston |
-
2004
- 2004-11-05 DE DE200410053925 patent/DE102004053925A1/en not_active Withdrawn
-
2005
- 2005-11-04 EP EP20050110394 patent/EP1655104B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
DE102004053925A1 (en) | 2006-05-11 |
EP1655104A2 (en) | 2006-05-10 |
EP1655104A3 (en) | 2006-07-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2509725B1 (en) | Radial press | |
DE602006000173T2 (en) | Bending device for bending machine | |
DE1966880C3 (en) | Shearing device for a cross transport press | |
CH675978A5 (en) | ||
EP1824641B1 (en) | Clamping element for workpieces, especially vise | |
DE212006000075U1 (en) | Numerically controlled, hydraulically double-acting forming device | |
EP1702712B1 (en) | Clamping device | |
EP1772418B1 (en) | Lifting device with a guided lifting table | |
EP1655104B1 (en) | Clamping device for clamping pieces | |
DE69313546T2 (en) | Clamping device with cams and with a swinging clamping arm | |
DE3232496C2 (en) | Device for the pivotable and lockable mounting of a machine vice on a tool machine table | |
EP0616134B1 (en) | Connecting arrangement for profiles | |
DE69119788T2 (en) | DEVICE FOR CLAMPING A WORKPIECE IN A CLAMPING DEVICE, WORKSTATION OR THE LIKE | |
EP3868487A1 (en) | Device for repairing a deformed stand profile | |
DE2828812A1 (en) | DEVICE FOR FIXING WORKPIECES | |
DE3431652C2 (en) | ||
DE9208418U1 (en) | Fluid-operated machine vice | |
DE69700246T2 (en) | Assembly procedure for a clutch ring in a washing machine container | |
DE1602984A1 (en) | Device for achieving a straight line on bar-shaped carriers of machine tools, in particular the crossbeams of vertical lathes | |
DE60016464T2 (en) | TOOL ASSEMBLY | |
EP0611623B1 (en) | Fixing attachment | |
DE8902325U1 (en) | Grippers for robots or handling devices | |
DE10025077A1 (en) | Clamping vice has pressure yoke with two spaced pressure take up arms each having its own pressure take-up device | |
DE29922064U1 (en) | Clamp for holding or clamping components | |
DE102008035353B4 (en) | Self-aligning clamping device for clamping parts |
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: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA HR MK YU |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: OSWALD, THOMAS DIPL.-ING. (FH) Inventor name: NIESNER, JUERGEN DIPL.-ING. Inventor name: EHRHARDT, WINFRIED DR. Inventor name: THOELEN, JOHANNES DIPL.-ING. Inventor name: KLEPSCH, WERNER DIPL.ING. |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA HR MK YU |
|
RTI1 | Title (correction) |
Free format text: CLAMPING DEVICE FOR CLAMPING PIECES |
|
17P | Request for examination filed |
Effective date: 20070119 |
|
17Q | First examination report despatched |
Effective date: 20070219 |
|
AKX | Designation fees paid |
Designated state(s): AT DE ES FR GB IT |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT DE ES FR GB IT |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 561780 Country of ref document: AT Kind code of ref document: T Effective date: 20120615 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502005012814 Country of ref document: DE Effective date: 20120809 |
|
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 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20120924 |
|
26N | No opposition filed |
Effective date: 20130314 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502005012814 Country of ref document: DE Effective date: 20130314 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 11 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 12 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 13 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R082 Ref document number: 502005012814 Country of ref document: DE Representative=s name: TAPPE, UDO, DIPL.-PHYS. DR.RER.NAT., DE |
|
P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20230515 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20231123 Year of fee payment: 19 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20231130 Year of fee payment: 19 Ref country code: FR Payment date: 20231123 Year of fee payment: 19 Ref country code: DE Payment date: 20231130 Year of fee payment: 19 Ref country code: AT Payment date: 20231117 Year of fee payment: 19 |