EP3501736B1 - Pneumatic vice jaw for a vice - Google Patents

Pneumatic vice jaw for a vice Download PDF

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Publication number
EP3501736B1
EP3501736B1 EP18214183.8A EP18214183A EP3501736B1 EP 3501736 B1 EP3501736 B1 EP 3501736B1 EP 18214183 A EP18214183 A EP 18214183A EP 3501736 B1 EP3501736 B1 EP 3501736B1
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EP
European Patent Office
Prior art keywords
clamping
compressed air
clamping jaw
recess
sealing
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
Application number
EP18214183.8A
Other languages
German (de)
French (fr)
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EP3501736A1 (en
Inventor
Klaus Sporer
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.)
Kacema GmbH
Original Assignee
Kacema GmbH
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Filing date
Publication date
Application filed by Kacema GmbH filed Critical Kacema GmbH
Publication of EP3501736A1 publication Critical patent/EP3501736A1/en
Application granted granted Critical
Publication of EP3501736B1 publication Critical patent/EP3501736B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B1/00—Vices
    • B25B1/24—Details, e.g. jaws of special shape, slideways
    • B25B1/2405—Construction of the jaws
    • B25B1/241—Construction of the jaws characterised by surface features or material
    • B25B1/2415—Construction of the jaws characterised by surface features or material being composed of a plurality of parts adapting to the shape of the workpiece
    • B25B1/2421—Construction of the jaws characterised by surface features or material being composed of a plurality of parts adapting to the shape of the workpiece the parts having a linear movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B1/00—Vices
    • B25B1/24—Details, e.g. jaws of special shape, slideways
    • B25B1/2405—Construction of the jaws
    • B25B1/2452—Construction of the jaws with supplementary jaws

Definitions

  • the present invention relates to a clamping jaw for a clamping system for fastening a workpiece.
  • the present invention also relates to a method for clamping a workpiece with the clamping system.
  • DE 10 2009 057 917 A1 discloses a positioning device for a clamping system wherein two compressed air connections are arranged one above the other on one end face in order to couple different types of outlet elements from different compressed air guns.
  • clamping elements of a vice which are arranged opposite one another in order to clamp a workpiece between them, it is necessary to form a specially configured clamping jaw for each clamping element, so that it is ensured that the compressed air connections of the clamping jaw each point in the direction of a operated field, so that an operator can connect a compressed air gun.
  • a clamping jaw is therefore not intended for any side or for attachment to any clamping element.
  • a clamping jaw for a clamping system in particular a vice system
  • the clamping jaw has a base body which has a clamping surface which a workpiece can be clamped, and has a fastening surface which can be fastened to the clamping system, wherein the fastening surface is opposite the clamping surface.
  • the fastening surface has a recess, guide bores being formed in the base body between the fastening surface and the recess of the clamping surface.
  • the clamping jaw has stop elements which are each arranged in the receiving bores in such a way that the stop elements can be extended and retracted from the clamping surface, so that the extended stop elements form a support for the workpiece.
  • the base body has a first side surface and an opposite second side surface, which are each formed between the fastening surface and the clamping surface.
  • a first compressed air connection which couples the surroundings of the base body with the recess, is arranged in the first side surface
  • a second compressed air connection which couples an environment of the base body with the recess, is arranged in the second side surface.
  • the first compressed air connection and the second compressed air connection are designed such that when a compressed air is introduced via the first compressed air connection or the second compressed air connection, at least one of the stop elements can be extended out of the clamping surface.
  • a clamping system in particular a vice system, is described.
  • the clamping system has two clamping elements that can be moved relative to one another and at least one clamping jaw described above.
  • the clamping jaw is releasably fastened to the clamping element, the clamping jaw being fastened to the clamping element in such a way that the recess is sealed from the surroundings by means of the clamping element.
  • a method for clamping a workpiece with the clamping system described above is described.
  • the jaw on one of the Clamping elements are releasably fastened in such a way that the recess of the clamping jaw is covered in a sealing manner by the clamping element.
  • compressed air is introduced via the first compressed air connection in order to extend at least one of the stop elements from the clamping surface.
  • the workpiece can then be placed on the at least one stop element.
  • the clamping elements move towards each other so that the workpiece is clamped between the clamping surface of the clamping jaw and the other clamping element.
  • the clamping system is designed in such a way that two, in particular plate-shaped, clamping elements can be moved mechanically, electrically, pneumatically or hydraulically with respect to one another in order to clamp a workpiece between them. It is necessary to clamp the workpiece in a desired orientation between the two clamping elements. So that the workpiece can be aligned in a defined manner, the clamping jaw according to the invention is attached to at least one of the clamping elements.
  • the stop elements can be extended using compressed air. Stop elements that are not required can be pushed back into the mounting hole. The extended stop elements form a support surface for the workpiece. In other words, the workpiece rests on the desired stop elements while the two clamping elements are moved towards one another and clamp the workpiece.
  • the base body can have a plurality of stop elements which are arranged in corresponding receiving bores, the stop elements being able to be arranged in any pattern and in any number in order to ensure any number of support positions and appropriate alignment for the workpiece.
  • the stop elements can, for example, be cylindrical and form cylindrical columns. Furthermore, the stop elements can also have polygonal cross-sections, such as, for example, hexagonal columns.
  • the base body of the clamping jaw has the clamping surface on which the workpiece rests and clamping forces are transmitted. Opposite the clamping surface, the base body has the fastening surface, by means of which the base body can be fastened to one of the clamping elements.
  • the fastening surface has a recess which is designed such that all of the receiving bores are at least partially coupled to the recess. After the fastening surface has been fastened to a tensioning element, the tensioning element completely covers the depression, so that a closed volume is formed between the fastening surface and the tensioning element in the region of the depression.
  • the first and the second compressed air connection which are arranged opposite one another on corresponding side surfaces (end surfaces) of the base body, form a passage or a coupling between the surroundings of the clamping jaw and the recess or the enclosed volume.
  • the first and the second compressed air connection are arranged in such a way that a compressed air gun or any other compressed air connection can be coupled so that compressed air can be introduced into the recess or the connected volume, so that the stop elements are extended from the clamping surface due to the excess pressure, so that the Workpiece can be placed on the corresponding stop elements.
  • the compressed air connections can for example have a check valve or a valve device described in detail below in order to prevent or control the escape of the compressed air from the depression into the environment.
  • corresponding compressed air connections are arranged in particular on two opposite side surfaces.
  • a compressed air connection is only provided on one side of the base body. If the clamping jaw is released from a clamping element, the clamping jaw is rotated so that the fastening surface points in the direction of the opposite clamping element and the clamping jaw is attached to the opposite clamping element, the conventional compressed air connection points to the opposite side, which is difficult to access by the operator. Due to the attachment of a compressed air connection on opposite sides according to the present invention, when the clamping jaw is attached to any clamping element, a compressed air connection is accessible from the same side of the clamping system, so that the clamping system can still be operated comfortably.
  • At least the first compressed air connection or the second compressed air connection has a valve device which is designed such that a predetermined volume flow can be discharged from the depression into the surroundings.
  • the closed volume which is formed by means of the recess between the fastening surface and the clamping element to which clamping jaws is fastened, is not hermetically sealed, but a corresponding excess pressure can be reduced with a predetermined volume flow in the direction of the environment.
  • This has the advantage that stop elements, which are not used for support and alignment of the workpiece are to be used, can be pressed into the mounting hole. By pressing in the stop elements, the internal pressure in the closed volume increases, which can be compensated for by the valve device described above.
  • the first compressed air connection can have a hermetically sealing check valve or a hermetically sealing valve device, while the second compressed air connection can have the valve device described above, which is not hermetically sealing.
  • the valve device has a valve seat and a valve element.
  • the valve seat has a sealing edge which has a through opening which connects the surroundings with the recess.
  • the valve element is movably arranged in the through opening between an open position and a sealing position, wherein in the sealing position the sealing edge can be placed at least partially on a sealing surface of the valve element for at least partially sealing the through opening.
  • valve element is thus partially sealingly seated in the valve seat, so that a fluid flow through the passage opening is reduced or prevented.
  • the valve seat forms a sealing edge which, in the sealing position, is in sealing contact with the valve element.
  • the valve element is, for example, a wedge-shaped, spherical or cylindrical workpiece which can be moved between an open position in which the valve element is spaced from the valve seat and the passage opening is therefore not closed, and a sealing position in which the passage opening is almost completely sealed .
  • the valve device is designed such that when an air pressure is applied by means of a compressed air gun which is applied to one of the compressed air connections, the valve element is pushed away from the valve seat so that the through-opening is open and air can penetrate into the recess.
  • a higher pressure in the depression compared to the surroundings leads to the valve element being pressed against the valve seat so that the sealing position is assumed.
  • the sealing edge forms a circumferential contour which, in the sealing position, forms a seat for the valve element.
  • the circumferential contour of the sealing edge runs around the through opening. If the sealing edge rests completely against the sealing element, the through opening is almost completely sealed.
  • the circumferential contour and the valve element are designed in such a way that in the sealing position there is a defined, spaced-apart region between the sealing edge and the valve element.
  • a notch or a ventilation groove can be formed along the sealing edge, so that air can flow from the surroundings into the recess or vice versa even in the sealing position.
  • the volume flow is greatly reduced.
  • extended stop elements on which the workpiece should not rest, can be pushed back into the receiving bores.
  • the air displaced into the receiving bores by the insertion of the stop elements can flow out into the environment via the recess through the passage opening.
  • any number of stop elements that are not in the extended State are required, are pushed back into the mounting holes.
  • the circumferential contour of the sealing edge forms an annular shape or a polygonal shape, in particular a square or hexagonal shape.
  • valve element is designed as a ball or as a wedge.
  • the valve element is designed as a ball, for example, and the contour of the sealing edge is a circumferential polygonal, in particular hexagonal, contour. If the ball rests on the valve seat in the sealing position, there is no full contact between the sealing edge and the ball. In particular, in the corner areas of the polygon contour, small gaps form through which compressed air can flow from the depression into the environment or vice versa.
  • the present invention provides an automatic venting of the pocket-shaped free space.
  • Such an automatic venting can take place via defined openings between the pocket-shaped free space and the outside, ie between the valve element and the valve seat. In the process, the seal that seals the free space against the clamping device is deliberately interrupted.
  • the valve device has a spring element which prestresses the valve element in the sealing position.
  • the spring element can be designed, for example, as a tension spring or as a compression spring.
  • the base body has a ventilation opening which connects the depression and the surroundings in such a way that a predetermined volume flow can be discharged from the depression into the surroundings.
  • the clamping jaw has a sealing ring which is arranged circumferentially around the recess in order to seal the recess from the environment.
  • the sealing ring can for example be made of plastic, in particular of rubber-like plastic.
  • the clamping elements are first moved apart, in particular after the clamping elements have already clamped a first workpiece.
  • the clamping jaw is released from one clamping element.
  • the clamping jaw is turned and the clamping jaw is attached to the other clamping element.
  • Compressed air is introduced via the second compressed air connection in order to extend at least one of the stop elements from the clamping surface.
  • the clamping elements are then moved towards one another again so that another workpiece is clamped between the clamping surface of the clamping jaw and the other clamping element.
  • the clamping jaw of the present invention has an air inlet (compressed air connection) on both end faces. This means that only one version of the clamping jaw is required for attachment to opposing clamping elements of a vice system.
  • Previous clamping jaws with positioning pins have left and right versions, which have to be mounted accordingly on the left or opposite right clamping element of a vice.
  • the compressed air reaches the stop elements (positions pins) via the compressed air connection and the recess on the back. This increases the air pressure and the stop elements move outwards from the clamping surface.
  • the air can escape in a defined manner from the recess, for example via the valve device described above.
  • the air inlet into the recess has a so-to-speak exactly defined permissible minimum counterflow direction.
  • clamping jaws can be provided which are designed to be identical in construction for mounting on a left as well as a right clamping element.
  • the operator applies, for example, a commercially available compressed air gun to one of the two end-face compressed air connections and introduces compressed air into it.
  • Each of the compressed air connections or air inlet units is connected via connecting channels to a pocket-shaped free space or recess which is located on the side of the clamping jaw facing the clamping means (clamping element).
  • the supply of compressed air increases the pressure level in the pocket-shaped recess, as a result of which the positioning pins / stop elements are pressed out of the clamping surface.
  • clamping jaws that are mirrored over the clamping surface have been used for the fixed and the movable side of the clamping device (clamping element).
  • clamping element the two clamping jaws on the fixed and the movable side of the clamping element must be structurally identical. This also minimizes storage.
  • Fig. 1 shows a front side (clamping surface 102) of a clamping jaw 100 and Fig. 2 shows a rear side (fastening surface 201) of a clamping jaw 100 according to an exemplary embodiment of the present invention.
  • the clamping jaw 100 is for a clamping system 400 (see Fig. 4 ), in particular a vice system, is provided.
  • the clamping jaw 100 can be attached to a clamping element 401, 402 (see Fig. 4 ) can be detachably attached.
  • a base body 101 has a clamping surface 102 on which a workpiece 401 (see Fig. 4 ) can be clamped, and a fastening surface 201 which can be fastened to the clamping system 400.
  • Guide bores are formed in the base body 101 between the fastening surface 201 and the recess 202 of the clamping surface 102.
  • Stop elements are each arranged in the receiving bores 509 in such a way that the stop elements can be extended and retracted from the clamping surface 102, so that the extended stop elements form a support for the workpiece 401.
  • a first compressed air connection 105 which couples the surroundings of the base body 101 with the recess 202
  • a second compressed air connection 205 which couples an environment of the base body 101 with the recess 202, is designed in such a way that when a compressed air is introduced via the first compressed air connection 105 or the second compressed air connection 205, at least one of the stop elements can be extended out of the clamping surface 102.
  • the stop elements 103 can be extended by means of compressed air. Stop elements 103, which are not required, can be returned to FIG the mounting hole must be pressed in.
  • the extended stop elements 103 form a support surface for the workpiece 401. In other words, the workpiece 401 rests on the desired stop elements 103 while the two clamping elements 402, 403 are moved towards one another and clamp the workpiece 401.
  • the stop elements 103 are cylindrical and designed as positioning pins.
  • the base body 101 of the clamping jaw 100 has the clamping surface 102 on which the workpiece 401 rests and clamping forces are transmitted. Opposite to the clamping surface 102, the base body 101 has the fastening surface 201, by means of which the base body 101 can be fastened to one of the clamping elements for 101, furthermore 2.
  • the fastening surface 201 has a pocket-shaped recess 202 which is designed such that all of the receiving bores 509 are at least partially coupled to the recess 202.
  • the clamping element 402, 403 After fastening the fastening surface 201 to a clamping element 402, 403, the clamping element 402, 403 completely covers the recess 202, so that a closed volume is formed between the fastening surface 201 and the clamping element 402, 403 in the region of the recess 202.
  • the first and the second compressed air connection 105, 205 which are arranged opposite one another on corresponding side surfaces (end surfaces) 104, 204 of the base body 101, form a passage or a coupling between the surroundings of the clamping jaw 100 and the recess 202 or the enclosed one Volume.
  • the first and the second compressed air connection 105, 205 are arranged in such a way that a compressed air gun or any other compressed air connection can be coupled so that compressed air can be introduced into the recess 202 or the connected volume, so that the stop elements 103 are removed from the clamping surface due to the overpressure 102 be extended so that the workpiece 401 can be placed on the corresponding stop elements 103.
  • clamping jaw 100 can be arranged on both opposing clamping elements 402, 403, one of the two compressed air connections 402, 403 always being accessible from a desired side of the clamping system 400 by an operator .
  • Clamping jaws 100 can thus be provided which are designed to be identical in construction for assembly on a left-hand as well as a right-hand clamping element.
  • Each of the compressed air connections 105, 205 or air inlet units is connected via connecting channels to a pocket-shaped free space or recess 202 which is located on the side of the clamping jaw facing the clamping means (clamping element).
  • the supply of compressed air increases the pressure level in the pocket-shaped recess 202, as a result of which the positioning pins / stop elements 103 are pressed out of the clamping surface 102.
  • the fixed and movable clamping jaws 100 are identical, it is possible to apply compressed air to the two opposite compressed air connections 105, 205 or air inlet units. As a result, there is only one version of the clamping jaw 100 for attachment to opposing clamping elements 402, 403 of a vice system 400.
  • the air can be defined from the recess, for example via the valve device 501 described below (see Fig. 5 ), escape.
  • the air inlet into the depression 202 thus has an exactly defined permissible minimum counterflow direction, so to speak.
  • the clamping jaw 100 has a sealing ring 203 which is arranged circumferentially around the recess 202 for sealing the recess 202 from the environment.
  • the sealing ring 203 can for example be made of plastic, in particular of rubber-like plastic.
  • FIG. 11 shows a schematic representation of two clamping jaws 100 according to the embodiment from FIGS. 1 and 2 . From this it can be seen in particular that the compressed air connection 105 of the clamping jaw 100 and the compressed air connection 205 of the clamping jaw 100 ′ are accessible from the same side, so that it is not necessary to produce an adapted clamping jaw 100 for each side.
  • Fig. 4 shows a schematic representation of a clamping system 400 according to an exemplary embodiment of the present invention.
  • the clamping system 400 is designed such that two, in particular plate-shaped, clamping elements 402, 403 can be moved mechanically, electrically, pneumatically or hydraulically with respect to one another in order to clamp a workpiece 401 between them. It is necessary to clamp the workpiece 401 in a desired alignment between the two clamping elements 402, 403. So that the workpiece 401 can be aligned in a defined manner, the clamping jaw 100 according to the invention is releasably fastened to at least one of the clamping elements 402, 403.
  • the clamping jaw 100 can be arranged on a fixed or movable side of a clamping element 402, 403.
  • the clamping system 400 is shown in a state in which a workpiece 401 is also clamped between the left clamping element 402 and the right clamping element 3.
  • the clamping jaw 100 according to the invention is releasably attached to the left clamping element 402.
  • the sealing ring 203 seals the inner volume of the recess 202.
  • Compressed air is introduced via the compressed air connection 105, so that the stop elements 103 extend.
  • the stop elements 103 which are not required for positioning the workpiece 401, are then pressed in again. As in Fig. 4 shown, the workpiece 401 rests on a predetermined extended stop element 103 for exact positioning.
  • the clamping jaw 100 Due to the construction of the clamping jaw 100 according to the invention, it can be released again from the left clamping element 402, turned and, for example, fastened to the right clamping element 403.
  • the second compressed air connection 205 would accordingly be visible in the image plane.
  • FIGS. 5 and 6 show schematic representations of a valve device 501 of a clamping jaw 100 according to an exemplary embodiment of the present invention.
  • a corresponding valve device 501 can be set up at the first compressed air connection 105 or the second compressed air connection 205, for example.
  • the valve device 501 is set up in such a way that a predetermined volume flow can flow out from the depression 202 into the environment.
  • the closed volume which is formed by means of the recess 202 between the fastening surface 201 and the clamping element 402, 403 to which a clamping jaw 100 is fastened, is thus not hermetic but a correspondingly existing overpressure can be reduced with a predetermined volume flow in the direction of the environment.
  • the valve device 501 has a valve seat 502 and a valve element 503.
  • the valve seat 502 has a sealing edge 504 which surrounds a through opening 505 which connects the surroundings with the recess 202.
  • the valve element 503 is movably arranged in the through opening 505 between an open position and a sealing position, wherein in the sealing position the sealing edge 504 can at least partially rest on a sealing surface of the valve element 503 for at least partially sealing the through opening 505.
  • the valve element 503 is thus partially sealingly seated in the valve seat 502, so that a fluid flow through the through-opening 505 is reduced or prevented.
  • the valve seat 502 forms a sealing edge around 504, which is in sealing contact with the valve element 503 in the sealing position.
  • the valve element 503 is, for example, a wedge-shaped, spherical or cylindrical workpiece, which is between an open position in which the valve element 503 is spaced from the valve seat 502 and the passage opening 505 is thus not closed, and a sealing position in which the passage opening 505 is almost completely is sealed, is movable.
  • valve device 501 is designed such that when an air pressure is applied by means of a compressed air gun, which is applied to one of the compressed air connections 105, 205, the valve element 503 is further pushed away from the valve seat, so that the through opening 505 is open and air can enter the recess 202.
  • a higher pressure in the recess 202 in comparison to the surroundings leads to the valve element being pressed against the valve seat 502, so that the sealing position is assumed.
  • the sealing edge 504 forms a circumferential contour which, in the sealing position, forms a seat for the valve element 503.
  • the circumferential contour of the sealing edge 504 runs around the through-opening 505. If the sealing edge 504 thus lies completely against the valve element 504, the through-opening 505 is almost completely sealed.
  • the circumferential contour and the valve element are designed in such a way that, in the sealing position, a defined, spaced-apart area (column 701, see FIG Fig. 7 ) is present between the sealing edge 504 and the valve element 503.
  • a notch or a ventilation groove can be formed along the sealing edge 504, so that air can flow from the surroundings into the recess 202 or vice versa even in the sealing position.
  • the volume flow is greatly reduced.
  • a high pressure can be built up in the recess 202 in order to extend the stop elements 103 from the clamping surface 102.
  • the circumferential contour of the sealing edge 504 has a polygonal shape in the example shown.
  • the valve element 503 is designed as a ball.
  • the valve device 501 has a spring element 506 which prestresses the valve element 503 in the sealing position. Furthermore, the base body 101 additionally has, for example, a ventilation opening (connection opening 507) which connects the depression 202 and the surroundings in such a way that a predetermined volume flow can flow out from the depression 202 into the surroundings.
  • a ventilation opening connection opening 507 which connects the depression 202 and the surroundings in such a way that a predetermined volume flow can flow out from the depression 202 into the surroundings.
  • a seal 508 for example a sealing ring, can be present in a corresponding receiving groove of a stop element 103, so that a seal is provided between the stop element 103 and the base body 101 in the receiving bore 509.
  • Fig. 7 shows a schematic representation of a compressed air connection 105 of a clamping jaw 100 according to an exemplary embodiment of the present invention.
  • the valve element 503 is designed, for example, as a ball 503 and the contour of the sealing edge 504 as a circumferential polygonal, in particular hexagonal, contour. If the ball 503 rests on the valve seat 502 in the sealing position, there is no full contact between the sealing edge 504 and the ball 503. In particular, in the corner areas of the polygonal contour, small gaps 701 are formed, through which compressed air can flow from the depression 202 into the environment or vice versa.
  • Automatic venting of the pocket-shaped free space / depression 202 is thus provided. Such an automatic venting can take place via defined openings 701 between the pocket-shaped recess 202 and the environment, ie between the valve element 503 and the Valve seat 502.
  • the seal which seals the free space against the clamping device, is specifically interrupted.

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Description

Die vorliegende Erfindung betrifft eine Spannbacken für ein Spannsystem zum Befestigen eines Werkstücks. Ferner betrifft die vorliegende Erfindung ein Verfahren zum Einspannen eines Werkstücks mit dem Spannsystem.The present invention relates to a clamping jaw for a clamping system for fastening a workpiece. The present invention also relates to a method for clamping a workpiece with the clamping system.

Hintergrund der ErfindungBackground of the invention

Um in einem Schraubstock verschiedene und unterschiedlich geformte Werkstücke einzuspannen, ist es bekannt, die jeweiligen Spannbacken beispielsweise an die einzuspannenden Werkstücke anzupassen. Dabei ist es beispielsweise bekannt, Anschlagelemente in einer Spannbacke anzubringen, welche nach außen fahren, um eine Anlagefläche für ein Werkstück zu bilden. Die bisher bekannten Lösungen zum lagegenauen Spannen von Werkstücken in Spannsystemen mit Anschlagelementen, die zum Positionieren aus der Spannfläche herausragen, sind so konzipiert, dass jeweils mit einem Schaltvorgang eine horizontal verlaufende Reihe von Anschlagelementen nach außen gedrückt werden. Dazu wird ein Druckkanal, der mit den Anschlagelementen einer horizontalen Reihe verbunden ist, durch Aufsetzen einer Druckluftpistole, mit Druck beaufschlagt. Durch die dabei auf die, dem Druckkanal zugewandte Stirnfläche der Anschlagelemente, entstehende Kraft, werden diese in Spannrichtung bewegt, und ragen somit aus der Spannfläche heraus.In order to clamp different and differently shaped workpieces in a vice, it is known to adapt the respective clamping jaws, for example, to the workpieces to be clamped. It is known, for example, to attach stop elements in a clamping jaw which move outwards in order to form a contact surface for a workpiece. The previously known solutions for precisely positioned clamping of workpieces in clamping systems with stop elements that protrude from the clamping surface for positioning are designed in such a way that a horizontally extending row of stop elements is pressed outwards with one switching operation. For this purpose, a pressure channel, which is connected to the stop elements of a horizontal row, is pressurized by placing a compressed air gun. As a result of the force generated on the end face of the stop elements facing the pressure channel, they are moved in the clamping direction and thus protrude from the clamping surface.

Aufgrund der standardmäßigen Ausgestaltung von Werkzeugmaschinen, kann die Bedienperson nur von einer Seite aus an das Spannsystem kommen, um es zu bedienen. Die bisher bekannten Positioniervorrichtungen sehen deshalb zwei verschiedene, spiegelbildlich angeordnete Grundkörper vor, deren Druckluftanschlüsse beim gleichzeitigen Einsatz, jeweils zur Bedienperson gerichtet sind.Due to the standard design of machine tools, the operator can only come to the clamping system from one side in order to operate it. The previously known positioning devices therefore see two different, mirror-inverted base bodies, whose compressed air connections are directed towards the operator when used at the same time.

DE 10 2009 057 917 A1 offenbart eine Positioniervorrichtung für ein Spannsystem wobei an einer Stirnfläche zwei Druckluftanschlüsse übereinander angeordnet sind um verschiedenartige Auslasselemente von unterschiedlichen Druckluftpistolen zu koppeln. Bei Spannelementen eines Schraubstocks, welche gegenüberliegend angeordnet sind, um zwischen sich ein Werkstück einzuspannen, ist es notwendig, für jedes Spannelement eine speziell konfigurierte Spannbacke auszubilden, sodass gewährleistet ist, dass die Druckluftanschlüsse der Spannbacke jeweils in Richtung eines bedienen Feldes zeigen, sodass eine Bedienperson eine Druckluftpistole anschließen kann. Eine Spannbacke ist somit nicht für beliebige Seiten bzw. zur Anbringung an beliebige Spannelemente vorgesehen. DE 10 2009 057 917 A1 discloses a positioning device for a clamping system wherein two compressed air connections are arranged one above the other on one end face in order to couple different types of outlet elements from different compressed air guns. In the case of clamping elements of a vice, which are arranged opposite one another in order to clamp a workpiece between them, it is necessary to form a specially configured clamping jaw for each clamping element, so that it is ensured that the compressed air connections of the clamping jaw each point in the direction of a operated field, so that an operator can connect a compressed air gun. A clamping jaw is therefore not intended for any side or for attachment to any clamping element.

Darstellung der ErfindungPresentation of the invention

Es ist eine Aufgabe der vorliegenden Erfindung, eine Spannbacke bereitzustellen, welche an beliebigen gegenüberliegenden Spannelementen eines Spannsystems eingesetzt und bedient werden kann.It is an object of the present invention to provide a clamping jaw which can be used and operated on any opposing clamping elements of a clamping system.

Diese Aufgabe wird mit einer Spannbacke für ein Spannsystem, das Spannsystem sowie einem Verfahren zum Einspannen eines Werkstücks mit dem Spannsystem gemäß den Gegenständen der unabhängigen Ansprüche beschrieben.This task is described with a clamping jaw for a clamping system, the clamping system and a method for clamping a workpiece with the clamping system according to the subjects of the independent claims.

Gemäß einem ersten Aspekt der vorliegenden Erfindung wird eine Spannbacke für ein Spannsystem insbesondere ein Schraubstocksystem beschrieben. Die Spannbacke weist einen Grundkörper auf, welcher eine Spannfläche, an welcher ein Werkstück einspannbar ist, und eine Befestigungsfläche, welche an das Spannsystem befestigbar ist, aufweist, wobei die Befestigungsfläche der Spannfläche gegenüberliegt. Die Befestigungsfläche weist eine Vertiefung auf, wobei in dem Grundkörper zwischen der Befestigungsfläche und der Vertiefung der Spannfläche Führungsbohrungen ausgebildet sind. Ferner weist die Spannbacke Anschlagelemente auf, welche jeweils in den Aufnahmebohrungen derart angeordnet sind, dass die Anschlagelemente aus der Spannfläche aus- und einfahrbar sind, sodass die ausgefahrenen Anschlagelemente eine Auflage für das Werkstück bilden. Der Grundkörper weist eine erste Seitenfläche und eine gegenüberliegende zweite Seitenfläche auf, welche jeweils zwischen der Befestigungsfläche und der Spannfläche ausgebildet sind. In der ersten Seitenfläche ist ein erster Druckluftanschluss, welcher eine Umgebung des Grundkörpers mit der Vertiefung koppelt, und in der zweiten Seitenfläche ein zweiter Druckluftanschluss angeordnet, welcher eine Umgebung des Grundkörpers mit der Vertiefung koppelt. Der erste Druckluftanschluss und der zweite Druckluftanschluss sind derart ausgebildet, dass bei Einbringen einer Druckluft über den ersten Druckluftanschluss oder den zweiten Druckluftanschluss zumindest eines der Anschlagelemente aus der Spannfläche ausfahrbar ist.According to a first aspect of the present invention, a clamping jaw for a clamping system, in particular a vice system, is described. The clamping jaw has a base body which has a clamping surface which a workpiece can be clamped, and has a fastening surface which can be fastened to the clamping system, wherein the fastening surface is opposite the clamping surface. The fastening surface has a recess, guide bores being formed in the base body between the fastening surface and the recess of the clamping surface. Furthermore, the clamping jaw has stop elements which are each arranged in the receiving bores in such a way that the stop elements can be extended and retracted from the clamping surface, so that the extended stop elements form a support for the workpiece. The base body has a first side surface and an opposite second side surface, which are each formed between the fastening surface and the clamping surface. A first compressed air connection, which couples the surroundings of the base body with the recess, is arranged in the first side surface, and a second compressed air connection, which couples an environment of the base body with the recess, is arranged in the second side surface. The first compressed air connection and the second compressed air connection are designed such that when a compressed air is introduced via the first compressed air connection or the second compressed air connection, at least one of the stop elements can be extended out of the clamping surface.

Gemäß einem weiteren Aspekt der vorliegenden Erfindung wird ein Spannsystem, insbesondere ein Schraubstocksystem beschrieben. Das Spannsystem weist zwei zueinander verfahrbare Spannelemente und zumindest eine oben beschriebene Spannbacke auf. Die Spannbacke ist an dem Spannelement lösbar befestigt, wobei die Spannbacke derart an dem Spannelement befestigt ist, dass die Vertiefung mittels des Spannelements dichtend von der Umgebung geschlossen ist.According to a further aspect of the present invention, a clamping system, in particular a vice system, is described. The clamping system has two clamping elements that can be moved relative to one another and at least one clamping jaw described above. The clamping jaw is releasably fastened to the clamping element, the clamping jaw being fastened to the clamping element in such a way that the recess is sealed from the surroundings by means of the clamping element.

Gemäß einem weiteren Aspekt der vorliegenden Erfindung wird ein Verfahren zum Einspannen eines Werkstücks mit dem oben beschriebenen Spannsystem beschrieben. Gemäß dem Verfahren wird die Spannbacke an einem der Spannelemente derart lösbar befestigt, dass die Vertiefung der Spannbacke von dem Spannelement dichtend abgedeckt wird. Ferner wird gemäß dem Verfahren Druckluft über den ersten Druckluftanschluss eingebracht, um zumindest eines der Anschlagelemente aus der Spannfläche auszufahren. Anschließend kann das Werkstück auf dem zumindest einem Anschlagelement aufgelegt werden. Die Spannelemente bewegen sich zueinander, sodass das Werkstück zwischen der Spannfläche der Spannbacke und dem anderen Spannelement eingespannt wird.According to a further aspect of the present invention, a method for clamping a workpiece with the clamping system described above is described. According to the method, the jaw on one of the Clamping elements are releasably fastened in such a way that the recess of the clamping jaw is covered in a sealing manner by the clamping element. Furthermore, according to the method, compressed air is introduced via the first compressed air connection in order to extend at least one of the stop elements from the clamping surface. The workpiece can then be placed on the at least one stop element. The clamping elements move towards each other so that the workpiece is clamped between the clamping surface of the clamping jaw and the other clamping element.

Das Spannsystem ist derart ausgebildet, dass zwei, insbesondere plattenförmige, Spannelemente zueinander mechanisch, elektrisch, pneumatisches oder hydraulisch bewegt werden können, um zwischen ihnen ein Werkstück einzuspannen. Dabei ist es notwendig, das Werkstück in einer gewünschten Ausrichtung zwischen den beiden Spannelementen einzuspannen. Damit das Werkstück definiert ausgerichtet werden kann, wird die erfindungsgemäße Spannbacke an zumindest einem der Spannelemente befestigt. Mittels Druckluft können die Anschlagelemente ausgefahren werden. Dabei können Anschlagelemente, welche nicht benötigt werden wieder in die Aufnahmebohrung hineingedrückt werden. Die ausgefahrenen Anschlagelemente bilden eine Auflagefläche für das Werkstück. Mit anderen Worten liegt das Werkstück auf den gewünschten Anschlagelementen auf, während die beiden Spannelemente zueinander bewegt werden und das Werkstück einspannen.The clamping system is designed in such a way that two, in particular plate-shaped, clamping elements can be moved mechanically, electrically, pneumatically or hydraulically with respect to one another in order to clamp a workpiece between them. It is necessary to clamp the workpiece in a desired orientation between the two clamping elements. So that the workpiece can be aligned in a defined manner, the clamping jaw according to the invention is attached to at least one of the clamping elements. The stop elements can be extended using compressed air. Stop elements that are not required can be pushed back into the mounting hole. The extended stop elements form a support surface for the workpiece. In other words, the workpiece rests on the desired stop elements while the two clamping elements are moved towards one another and clamp the workpiece.

Dabei kann der Grundkörper eine Vielzahl von Anschlagelementen aufweisen, welche in entsprechende Aufnahmebohrungen angeordnet sind, wobei die Anschlagelemente in einem beliebigen Muster und in einer beliebigen Anzahl angeordnet werden können, um beliebig viele Auflage Positionen und entsprechende Ausrichtung für das Werkstück zu gewährleisten.The base body can have a plurality of stop elements which are arranged in corresponding receiving bores, the stop elements being able to be arranged in any pattern and in any number in order to ensure any number of support positions and appropriate alignment for the workpiece.

Die Anschlagelemente können beispielsweise zylindrisch ausgebildet sein und zylindrische Säulen ausbilden. Ferner können die Anschlagelemente ebenfalls polygone Querschnitte, wie beispielsweise Sechskantensäulen aufweisen.The stop elements can, for example, be cylindrical and form cylindrical columns. Furthermore, the stop elements can also have polygonal cross-sections, such as, for example, hexagonal columns.

Der Grundkörper der Spannbacke weist die Spannfläche auf, an welcher das Werkstück anliegt und Spannkräfte übertragen werden. Gegenüberliegend zu der Spannfläche weist der Grundkörper die Befestigungsfläche auf, mittels welcher der Grundkörper an einem der Spannelemente befestigt werden kann. Die Befestigungsfläche weist eine Vertiefung auf, welche derart ausgebildet ist, dass alle Aufnahmebohrungen zumindest teilweise mit der Vertiefung gekoppelt sind. Nach Befestigung der Befestigungsfläche an einem Spannelement deckt das Spannelement die Vertiefung komplett ab, sodass zwischen der Befestigungsfläche und dem Spannelement im Bereich der Vertiefung ein geschlossenes Volumen gebildet wird.The base body of the clamping jaw has the clamping surface on which the workpiece rests and clamping forces are transmitted. Opposite the clamping surface, the base body has the fastening surface, by means of which the base body can be fastened to one of the clamping elements. The fastening surface has a recess which is designed such that all of the receiving bores are at least partially coupled to the recess. After the fastening surface has been fastened to a tensioning element, the tensioning element completely covers the depression, so that a closed volume is formed between the fastening surface and the tensioning element in the region of the depression.

Der erste und der zweite Druckluftanschluss, welche an entsprechenden Seitenflächen (Stirnflächen) des Grundkörpers gegenüberliegend voneinander angeordnet sind, bilden einen Durchgang bzw. eine Kopplung zwischen einer Umgebung der Spannbacke und der Vertiefung, bzw. dem eingeschlossenen Volumen.The first and the second compressed air connection, which are arranged opposite one another on corresponding side surfaces (end surfaces) of the base body, form a passage or a coupling between the surroundings of the clamping jaw and the recess or the enclosed volume.

Der erste und der zweite Druckluftanschluss sind dabei derart angeordnet, dass eine Druckluftpistole oder ein anderer beliebiger Druckluftanschluss ankoppelbar ist, sodass Druckluft in die Vertiefung bzw. das angeschlossene Volumen eingebracht werden kann, sodass aufgrund des Überdrucks die Anschlagelemente von der Spannfläche ausgefahren werden, sodass das Werkstück auf die entsprechenden Anschlagelemente aufgelegt werden kann. Die Druckluftanschlüsse können beispielsweise ein Rückschlagventil oder eine unten im Detail beschriebene Ventilvorrichtung aufweisen, um das Entweichen der Druckluft aus der Vertiefung in die Umgebung zu unterbinden bzw. zu kontrollieren.The first and the second compressed air connection are arranged in such a way that a compressed air gun or any other compressed air connection can be coupled so that compressed air can be introduced into the recess or the connected volume, so that the stop elements are extended from the clamping surface due to the excess pressure, so that the Workpiece can be placed on the corresponding stop elements. The compressed air connections can for example have a check valve or a valve device described in detail below in order to prevent or control the escape of the compressed air from the depression into the environment.

Mit der Spannbacke gemäß der vorliegenden Erfindung werden insbesondere an zwei gegenüberliegenden Seitenflächen entsprechende Druckluftanschlüsse angeordnet. Daraus ergibt sich der Vorteil, dass die Spannbacke an beiden gegenüberliegenden Spannelementen angeordnet werden kann, wobei immer eines der beiden Druckluftanschlüsse von einer gewünschten Seite des Spannsystems von einer Bedienperson zugänglich ist. Bei herkömmlichen Spannbacken ist ein Druckluftanschluss nur an einer Seite des Grundkörpers vorgesehen. Löst man die Spannbacke von einem Spannelement, dreht die Spannbacke, sodass die Befestigungsfläche in Richtung des gegenüberliegenden Spannelements zeigt und befestigt die Spannbacke an dem gegenüberliegenden Spannelement, so zeigt der konventionelle Druckluftanschluss auf die gegenüberliegende Seite, welche von der Bedienperson nur schwer zugänglich ist. Aufgrund der Anbringung von Druckluftanschluss an gegenüberliegenden Seiten gemäß der vorliegenden Erfindung, ist bei Anbringung der Spannbacke an einem beliebigen Spannelement jeweils ein Druckluftanschluss von derselben Seite des Spannsystems zugänglich, sodass das Spannsystem komfortabel bedienbar bleibt.With the clamping jaw according to the present invention, corresponding compressed air connections are arranged in particular on two opposite side surfaces. This results in the advantage that the clamping jaw can be arranged on both opposing clamping elements, with one of the two compressed air connections always being accessible to an operator from a desired side of the clamping system. With conventional clamping jaws, a compressed air connection is only provided on one side of the base body. If the clamping jaw is released from a clamping element, the clamping jaw is rotated so that the fastening surface points in the direction of the opposite clamping element and the clamping jaw is attached to the opposite clamping element, the conventional compressed air connection points to the opposite side, which is difficult to access by the operator. Due to the attachment of a compressed air connection on opposite sides according to the present invention, when the clamping jaw is attached to any clamping element, a compressed air connection is accessible from the same side of the clamping system, so that the clamping system can still be operated comfortably.

Gemäß einer weiteren beispielhaften Ausführungsform weist zumindest der erste Druckluftanschluss oder der zweite Druckluftanschluss eine Ventilvorrichtung auf, welche derart ausgebildet ist, dass ein vorbestimmter Volumenstrom von der Vertiefung in die Umgebung ausströmbar ist.According to a further exemplary embodiment, at least the first compressed air connection or the second compressed air connection has a valve device which is designed such that a predetermined volume flow can be discharged from the depression into the surroundings.

Damit wird das geschlossene Volumen, welches mittels der Vertiefung zwischen der Befestigungsfläche und dem Spannelement, an welchen Spannbacken befestigt ist, gebildet wird, nicht hermetisch abgedichtet sondern ein entsprechend vorliegender Überdruck kann mit einem vorbestimmten Volumenstrom in Richtung Umgebung abgebaut werden. Daraus ergibt sich der Vorteil, dass Anschlagelemente, welche nicht zur Auflage und Ausrichtung des Werkstücks verwendet werden sollen, in die Aufnahmebohrung hineingedrückt werden können. Durch das Hineindrücken der Anschlagelemente erhöht sich der Innendruck in dem geschlossenen Volumen, welcher durch die oben beschriebene Ventilvorrichtung ausgeglichen werden kann.The closed volume, which is formed by means of the recess between the fastening surface and the clamping element to which clamping jaws is fastened, is not hermetically sealed, but a corresponding excess pressure can be reduced with a predetermined volume flow in the direction of the environment. This has the advantage that stop elements, which are not used for support and alignment of the workpiece are to be used, can be pressed into the mounting hole. By pressing in the stop elements, the internal pressure in the closed volume increases, which can be compensated for by the valve device described above.

Dabei kann in einer beispielhaften Ausführungsform der erste Druckluftanschluss ein hermetisch abdichtendes Rückschlagventil bzw. eine hermetisch abdichtende Ventilvorrichtung aufweisen, während der zweite Druckluftanschluss die oben beschriebene Ventilvorrichtung, welche nicht hermetisch dichtend ist, aufweisen.In an exemplary embodiment, the first compressed air connection can have a hermetically sealing check valve or a hermetically sealing valve device, while the second compressed air connection can have the valve device described above, which is not hermetically sealing.

Gemäß einer weiteren beispielhaften Ausführungsform weist die Ventilvorrichtung einen Ventilsitz und ein Ventilelement auf. Der Ventilsitz weist eine Dichtkante auf, welche eine Durchgangsöffnung aufweist, die die Umgebung mit der Vertiefung verbindet. Das Ventilelement ist in der Durchgangsöffnung zwischen einer Öffnungsstellung und einer Dichtstellung beweglich angeordnet, wobei in Dichtstellung die Dichtkante zumindest teilweise auf einer Dichtfläche des Ventilelements anlegbar ist zur zumindest teilweisen abdichtenden Abdichtung der Durchgangsöffnung.According to a further exemplary embodiment, the valve device has a valve seat and a valve element. The valve seat has a sealing edge which has a through opening which connects the surroundings with the recess. The valve element is movably arranged in the through opening between an open position and a sealing position, wherein in the sealing position the sealing edge can be placed at least partially on a sealing surface of the valve element for at least partially sealing the through opening.

Das Ventilelement sitzt somit teilweise dichtend in dem Ventilsitz, sodass eine Fluidströmung durch die Durchgangsöffnung reduziert bzw. unterbunden wird. Der Ventilsitz bildet eine Dichtkante aus, welche in Dichtstellung in dichtenden Kontakt mit dem Ventilelement ist. Das Ventilelement ist beispielsweise ein keilförmiges, kugelförmiges oder zylindrisches Werkstück, welches sich zwischen einer Öffnungsstellung, in welcher das Ventilelement von dem Ventilsitz beabstandet ist und die Durchgangsöffnung somit nicht verschlossen ist, und einer Dichtstellung, in welcher die Durchgangsöffnung nahezu vollständig abgedichtet ist, verfahrbar ist. Insbesondere ist die Ventilvorrichtung derart ausgebildet, dass bei Aufbringen eines Luftdrucks mittels einer Druckluftpistole, die an einem der Druckluftanschlüsse angelegt ist, das Ventilelement von dem Ventilsitz weggedrückt wird, sodass die Durchgangsöffnung geöffnet ist und Luft in die Vertiefung eindringen kann. Alternativ führt ein höherer Druck in der Vertiefung im Vergleich zu der Umgebung dazu, dass das Ventilelement gegen den Ventilsitz gepresst wird sodass die Dichtstellung eingenommen wird.The valve element is thus partially sealingly seated in the valve seat, so that a fluid flow through the passage opening is reduced or prevented. The valve seat forms a sealing edge which, in the sealing position, is in sealing contact with the valve element. The valve element is, for example, a wedge-shaped, spherical or cylindrical workpiece which can be moved between an open position in which the valve element is spaced from the valve seat and the passage opening is therefore not closed, and a sealing position in which the passage opening is almost completely sealed . In particular, the valve device is designed such that when an air pressure is applied by means of a compressed air gun which is applied to one of the compressed air connections, the valve element is pushed away from the valve seat so that the through-opening is open and air can penetrate into the recess. Alternatively, a higher pressure in the depression compared to the surroundings leads to the valve element being pressed against the valve seat so that the sealing position is assumed.

Gemäß einer weiteren beispielhaften Ausführungsform bildet die Dichtkante eine umlaufende Kontur aus, welche in Dichtstellung einen Sitz für das Ventilelement ausbildet. Die umlaufende Kontur der Dichtkante verläuft um die Durchgangsöffnung. Liegt die Dichtkante somit vollumfänglich an dem Dichtelement auf, so wird die Durchgangsöffnung nahezu vollständig abgedichtet.According to a further exemplary embodiment, the sealing edge forms a circumferential contour which, in the sealing position, forms a seat for the valve element. The circumferential contour of the sealing edge runs around the through opening. If the sealing edge rests completely against the sealing element, the through opening is almost completely sealed.

Gemäß einer weiteren beispielhaften Ausführungsform sind die umlaufende Kontur und das Ventilelemente derart ausgebildet, dass in Dichtstellung ein definierter beabstandeter Bereich zwischen der Dichtkante und dem Ventilelement vorliegt. Beispielsweise kann entlang der Dichtkante eine Kerbe bzw. eine Entlüftungsnut ausgebildet sein, sodass auch in Dichtstellung von der Umgebung in die Vertiefung oder umgekehrt Luft strömen kann. In Dichtstellung wird der Volumenstrom jedoch stark reduziert. Somit kann nach Aufbringen von Druckluft an dem Druckluftanschluss ein hoher Druck in der Vertiefung aufgebaut werden, um die Anschlagelemente von der Spannfläche auszufahren. Anschließend, nachdem keine Druckluft mehr an einem Druckluftanschluss anliegt, nimmt der Druck in der Vertiefung langsam ab. Somit können beispielsweise ausgefahrenen Anschlagelemente, auf welche das Werkstück nicht aufliegen soll, zurück in die Aufnahmebohrungen geschoben werden. Die durch das Einschieben der Anschlagelemente verdrängte Luft in den Aufnahmebohrungen kann über die Vertiefung durch die Durchgangsöffnung in die Umgebung ausströmen. Somit kann in einfacher Art und Weise beliebig viele Anschlagelemente, welche nicht im ausgefahrenen Zustand benötigt werden, in die Aufnahmebohrungen zurückgeschoben werden.According to a further exemplary embodiment, the circumferential contour and the valve element are designed in such a way that in the sealing position there is a defined, spaced-apart region between the sealing edge and the valve element. For example, a notch or a ventilation groove can be formed along the sealing edge, so that air can flow from the surroundings into the recess or vice versa even in the sealing position. In the sealing position, however, the volume flow is greatly reduced. Thus, after applying compressed air to the compressed air connection, a high pressure can be built up in the recess in order to extend the stop elements from the clamping surface. Then, after no more compressed air is available at a compressed air connection, the pressure in the recess slowly decreases. Thus, for example, extended stop elements, on which the workpiece should not rest, can be pushed back into the receiving bores. The air displaced into the receiving bores by the insertion of the stop elements can flow out into the environment via the recess through the passage opening. Thus, in a simple manner, any number of stop elements that are not in the extended State are required, are pushed back into the mounting holes.

Gemäß einer weiteren beispielhaften Ausführungsform bildet die umlaufende Kontur der Dichtkante eine Ringform oder eine polygone Form, insbesondere eine viereckige oder sechseckige Form, aus.According to a further exemplary embodiment, the circumferential contour of the sealing edge forms an annular shape or a polygonal shape, in particular a square or hexagonal shape.

Gemäß einer weiteren beispielhaften Ausführungsform ist das Ventilelement als Kugel oder als Keil ausgebildet.According to a further exemplary embodiment, the valve element is designed as a ball or as a wedge.

In einer bevorzugten Ausführungsform ist das Ventilelement beispielsweise als Kugel ausgebildet und die Kontur der Dichtkante eine umlaufende polygone, insbesondere 6-eckige, Kontur. Liegt die Kugel in Dichtstellung auf dem Ventilsitz auf, so findet kein vollumfänglicher Kontakt zwischen der Dichtkante und der Kugel statt. Insbesondere in den Eckbereichen der Polygonen Kontur bilden sich kleine Spalte, durch welche Druckluft aus der Vertiefung in die Umgebung oder umgekehrt strömen kann.In a preferred embodiment, the valve element is designed as a ball, for example, and the contour of the sealing edge is a circumferential polygonal, in particular hexagonal, contour. If the ball rests on the valve seat in the sealing position, there is no full contact between the sealing edge and the ball. In particular, in the corner areas of the polygon contour, small gaps form through which compressed air can flow from the depression into the environment or vice versa.

Sollte die Lufteinlasseinheit den Luftstrom nur in eine Richtung zulassen, wie bei handelsüblichen Ventilen, würde der Druck in dem taschenförmigen Vertiefung nicht bzw. nicht schnell genug abgebaut werden, da sich das Druckvolumen um den Volumenanteil des eingedrückten Anschlagelemente reduziert. Dadurch erhöht sich der Druck in der Vertiefung, wodurch sich das eingedrückte Anschlagelement sofort wieder in seine Ausgangsposition bewegt. Um dies zu vermeiden sieht die vorliegende Erfindung eine automatische Entlüftung des taschenförmigen Freiraums vor. Eine solche automatische Entlüftung kann über definierte Öffnungen zwischen taschenförmigem Freiraum und der Außenseite erfolgen, d. h. zwischen dem Ventilelement und dem Ventilsitz. Dabei wird die Dichtung, die den Freiraum gegen die Spanneinrichtung abdichtet, gezielt unterbrochen.If the air inlet unit only allows the air flow in one direction, as is the case with commercially available valves, the pressure in the pocket-shaped depression would not be reduced or not be reduced quickly enough, since the pressure volume is reduced by the volume proportion of the pressed-in stop element. This increases the pressure in the recess, so that the pressed-in stop element immediately moves back into its starting position. To avoid this, the present invention provides an automatic venting of the pocket-shaped free space. Such an automatic venting can take place via defined openings between the pocket-shaped free space and the outside, ie between the valve element and the valve seat. In the process, the seal that seals the free space against the clamping device is deliberately interrupted.

Gemäß einer weiteren beispielhaften Ausführungsform weist die Ventilvorrichtung ein Federelement auf, welches das Ventilelement in Dichtstellung vorspannt. Das Federelement kann beispielsweise als Zugfeder oder als Druckfeder ausgebildet sein.According to a further exemplary embodiment, the valve device has a spring element which prestresses the valve element in the sealing position. The spring element can be designed, for example, as a tension spring or as a compression spring.

Gemäß einer weiteren beispielhaften Ausführungsform weist der Grundkörper eine Entlüftungsöffnung auf, welche die Vertiefung und die Umgebung derart verbindet, dass ein vorbestimmter Volumenstrom von der Vertiefung in die Umgebung ausströmbar ist.According to a further exemplary embodiment, the base body has a ventilation opening which connects the depression and the surroundings in such a way that a predetermined volume flow can be discharged from the depression into the surroundings.

Gemäß einer weiteren beispielhaften Ausführungsform weist die Spannbacke einen Dichtring auf, welcher umlaufend um die Vertiefung zur Abdichtung der Vertiefung von der Umgebung angeordnet ist. Der Dichtring kann beispielsweise aus Kunststoff, insbesondere aus gummiartigen Kunststoff ausgebildet sein.According to a further exemplary embodiment, the clamping jaw has a sealing ring which is arranged circumferentially around the recess in order to seal the recess from the environment. The sealing ring can for example be made of plastic, in particular of rubber-like plastic.

Gemäß einer weiteren beispielhaften Ausführungsform des Verfahrens werden zunächst die Spannelemente, insbesondere nachdem die Spannelemente bereits ein erstes Werkstück eingeklemmt haben, auseinandergefahren. Die Spannbacke wird von dem einen Spannelement gelöst. Anschließend wird die Spannbacke gewendet und die Spannbacke an dem anderen Spannelement befestigt. Druckluft wird über den zweiten Druckluftanschluss eingebracht, um zumindest eines der Anschlagelemente aus der Spannfläche auszufahren. Anschließend werden die Spannelemente erneut aufeinander zu bewegt, sodass ein weiteres Werkstück zwischen der Spannfläche der Spannbacke und dem anderen Spannelement eingespannt wird. Mit dem oben beschriebenen Verfahren wird verdeutlicht, dass ein und dieselbe Spannbacke derart symmetrischen ausgebildet ist, dass ein einfaches wenden der Spannbacke durchgeführt werden kann um zwischen einem linken Spannelement und einen rechten Spannelement beliebig ausgetauscht zu werden.According to a further exemplary embodiment of the method, the clamping elements are first moved apart, in particular after the clamping elements have already clamped a first workpiece. The clamping jaw is released from one clamping element. Then the clamping jaw is turned and the clamping jaw is attached to the other clamping element. Compressed air is introduced via the second compressed air connection in order to extend at least one of the stop elements from the clamping surface. The clamping elements are then moved towards one another again so that another workpiece is clamped between the clamping surface of the clamping jaw and the other clamping element. With the method described above, it is made clear that one and the same clamping jaw is designed symmetrically in such a way that the clamping jaw can simply be turned in order to be exchanged as desired between a left clamping element and a right clamping element.

Die Spannbacke der vorliegenden Erfindung weist auf beiden Stirnseiten einen Lufteinlass (Druckluftanschluss) auf. Dadurch ist nur noch eine Version der Spannbacke zum Anbringen an gegenüberliegende Spannelemente eines Schraubstocksystems notwendig. Bisherige Spannbacken mit Positionierstiften haben linke und rechte Versionen, die entsprechend auf dem linken oder gegenüberliegenden rechten Spannelement eines Schraubstocks montiert werden müssen. Über den Druckluftanschluss und die Vertiefung auf der Rückseite gelangt die Druckluft bis zu den Anschlagelementen (positioniert Stifte). Der Luftdruck wird dadurch erhöht und die Anschlagelemente bewegen sich von der Spannfläche nach außen.The clamping jaw of the present invention has an air inlet (compressed air connection) on both end faces. This means that only one version of the clamping jaw is required for attachment to opposing clamping elements of a vice system. Previous clamping jaws with positioning pins have left and right versions, which have to be mounted accordingly on the left or opposite right clamping element of a vice. The compressed air reaches the stop elements (positions pins) via the compressed air connection and the recess on the back. This increases the air pressure and the stop elements move outwards from the clamping surface.

Zum Eindrücken der Anschlagelemente kann die Luft aus der Vertiefung definiert, beispielsweise über die oben beschriebene Ventilvorrichtung, entweichen. Somit weist der Lufteinlass in die Vertiefung eine sozusagen exakt definierte zulässige minimale Gegenströmrichtung auf.To press in the stop elements, the air can escape in a defined manner from the recess, for example via the valve device described above. Thus, the air inlet into the recess has a so-to-speak exactly defined permissible minimum counterflow direction.

Somit können Spannbacken bereitgestellt werden, welche zur Montage an einem linken wie auch ein einem rechten Spannelement baugleich ausgestaltet werden.Thus, clamping jaws can be provided which are designed to be identical in construction for mounting on a left as well as a right clamping element.

Zum Positionieren eines Werkstücks setzt die Bedienperson zum Beispiel eine handelsübliche Druckluftpistole an eine der beiden stirnseitigen Druckluftanschlüsse an und leitet Druckluft in diese ein. Jede der Druckluftanschlüsse bzw. Lufteinlasseinheiten ist über Verbindungskanäle mit einem taschenförmigen Freiraum bzw. Vertiefung verbunden, der sich auf der, dem Spannmittel (Spannelement) zugewandten Seite der Spannbacke befindet. Durch die Zufuhr von Druckluft erhöht sich in der taschenförmigen Vertiefung das Druckniveau, wodurch die Positionierstifte/Anschlagelemente aus der Spannfläche heraus nach außen gedrückt werden.To position a workpiece, the operator applies, for example, a commercially available compressed air gun to one of the two end-face compressed air connections and introduces compressed air into it. Each of the compressed air connections or air inlet units is connected via connecting channels to a pocket-shaped free space or recess which is located on the side of the clamping jaw facing the clamping means (clamping element). The supply of compressed air increases the pressure level in the pocket-shaped recess, as a result of which the positioning pins / stop elements are pressed out of the clamping surface.

Je nach gewünschter Position des Werkstücks werden dann verschiedene Anschlagelemente zurück gedrückt. Das Werkstück wird dann an die außen verbleibenden Anschlagelemente angeschlagen bzw. aufgelegt. Somit kann eine Vielzahl von Werkstücken jeweils wiederholgenau positioniert werden. Bislang werden für die fixe und die bewegliche Seite des Spannmittels (Spannelement) Spannbacken eingesetzt, die über die Spannfläche gespiegelt aufgebaut sind. Um das Handhaben mit den erfindungsgemäßen Spannbacken zu vereinfachen, und um die Anzahl der Ersatzteile zu reduzieren, sind die beiden Spannbacken auf der festen und der beweglichen Seite des Spannelement, baugleich sein. Ferner wird dadurch die Lagerhaltung minimiert.Depending on the desired position of the workpiece, various stop elements are then pushed back. The workpiece is then hit or placed against the stop elements that remain on the outside. This means that a large number of workpieces can each be positioned with repeatability. So far, clamping jaws that are mirrored over the clamping surface have been used for the fixed and the movable side of the clamping device (clamping element). In order to simplify the handling of the clamping jaws according to the invention and to reduce the number of spare parts, the two clamping jaws on the fixed and the movable side of the clamping element must be structurally identical. This also minimizes storage.

Wegen der Baugleichheit von fixen und beweglichen Spannbacken, ist es möglich, die beiden gegenüber liegenden Druckluftanschlüsse bzw. Lufteinlasseinheiten mit Druckluft zu beaufschlagen.Because the fixed and movable clamping jaws are identical, it is possible to apply compressed air to the two opposite compressed air connections or air inlet units.

Es wird darauf hingewiesen, dass die hier beschriebenen Ausführungsformen lediglich eine beschränkte Auswahl an möglichen Ausführungsvarianten der Erfindung darstellen. So ist es möglich, die Merkmale einzelner Ausführungsformen in geeigneter Weise miteinander zu kombinieren, so dass für den Fachmann mit den hier expliziten Ausführungsvarianten eine Vielzahl von verschiedenen Ausführungsformen als offensichtlich offenbart anzusehen sind. Insbesondere sind einige Ausführungsformen der Erfindung mit Vorrichtungsansprüchen und andere Ausführungsformen der Erfindung mit Verfahrensansprüchen beschrieben. Dem Fachmann wird jedoch bei der Lektüre dieser Anmeldung sofort klar werden, dass, sofern nicht explizit anders angegeben, zusätzlich zu einer Kombination von Merkmalen, die zu einem Typ von Erfindungsgegenstand gehören, auch eine beliebige Kombination von Merkmalen möglich ist, die zu unterschiedlichen Typen von Erfindungsgegenständen gehören.It is pointed out that the embodiments described here represent only a limited selection of possible embodiment variants of the invention. It is thus possible to combine the features of individual embodiments with one another in a suitable manner, so that for the person skilled in the art, with the embodiment variants explicitly shown here, a large number of different embodiments are to be seen as obviously disclosed. In particular, some embodiments of the invention are described with device claims and other embodiments of the invention with method claims. However, when reading this application, it will immediately become clear to the person skilled in the art that, unless explicitly stated otherwise, in addition to a combination of features belonging to one type of subject matter of the invention, any combination of features relating to different types of Subjects of the invention belong.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

Im Folgenden werden zur weiteren Erläuterung und zum besseren Verständnis der vorliegenden Erfindung Ausführungsbeispiele unter Bezugnahme auf die beigefügten Zeichnungen näher beschrieben. Es zeigen:

  • Fig. 1 eine schematische Darstellung einer Vorderseite einer Spannbacke gemäß einer beispielhaften Ausführungsform der vorliegenden Erfindung.
  • Fig. 2 eine schematische Darstellung einer Rückseite der Spannbacke aus Fig. 1.
  • Fig. 3 eine schematische Darstellung zweier Spannbacken gemäß der Ausführungsform aus Fig. 1 und Fig. 2.
  • Fig. 4 eine schematische Darstellung eines Spannsystems gemäß einer beispielhaften Ausführungsform der vorliegenden Erfindung.
  • Fig. 5 und Fig. 6 schematische Darstellungen einer Ventilvorrichtung einer Spannbacke gemäß einer beispielhaften Ausführungsform der vorliegenden Erfindung.
  • Fig. 7 eine schematische Darstellung eines Druckluftanschlusses einer Spannbacke gemäß einer beispielhaften Ausführungsform der vorliegenden Erfindung.
In the following, for further explanation and for better understanding of the present invention, exemplary embodiments are described in more detail with reference to the accompanying drawings. Show it:
  • Fig. 1 a schematic representation of a front side of a clamping jaw according to an exemplary embodiment of the present invention.
  • Fig. 2 a schematic representation of a rear side of the clamping jaw Fig. 1 .
  • Fig. 3 a schematic representation of two clamping jaws according to the embodiment FIGS. 1 and 2 .
  • Fig. 4 a schematic representation of a clamping system according to an exemplary embodiment of the present invention.
  • FIGS. 5 and 6 schematic representations of a valve device of a clamping jaw according to an exemplary embodiment of the present invention.
  • Fig. 7 a schematic representation of a compressed air connection of a clamping jaw according to an exemplary embodiment of the present invention.

Detaillierte Beschreibung von exemplarischen AusführungsformenDetailed description of exemplary embodiments

Gleiche oder ähnliche Komponenten in unterschiedlichen Figuren sind mit gleichen Bezugsziffern versehen. Die Darstellungen in den Figuren sind schematisch.Identical or similar components in different figures are provided with the same reference numbers. The representations in the figures are schematic.

Fig. 1 zeigt eine Vorderseite (Spannfläche 102) einer Spannbacke 100 und Fig. 2 zeigt eine Rückseite (Befestigungsfläche 201) einer Spannbacke 100 gemäß einer beispielhaften Ausführungsform der vorliegenden Erfindung. Fig. 1 shows a front side (clamping surface 102) of a clamping jaw 100 and Fig. 2 shows a rear side (fastening surface 201) of a clamping jaw 100 according to an exemplary embodiment of the present invention.

Die Spannbacke 100 ist für ein Spannsystem 400 (siehe Fig. 4), insbesondere ein Schraubstocksystem, vorgesehen. Die Spannbacke 100 kann an ein Spannelement 401, 402 (siehe Fig. 4) lösbar befestigt werden. Ein Grundkörper 101 weist eine Spannfläche 102 auf, an welcher ein Werkstück 401 (siehe Fig. 4) einspannbar ist, und eine Befestigungsfläche 201, welche an das Spannsystem 400 befestigbar ist. In dem Grundkörper 101 sind zwischen der Befestigungsfläche 201 und der Vertiefung 202 der Spannfläche 102 Führungsbohrungen ausgebildet. Anschlagelemente sind jeweils in den Aufnahmebohrungen 509 derart angeordnet, dass die Anschlagelemente aus der Spannfläche 102 aus- und einfahrbar sind, sodass die ausgefahrenen Anschlagelemente eine Auflage für das Werkstück 401 bilden. In der ersten Seitenfläche 104 ist ein erster Druckluftanschluss 105, welcher eine Umgebung des Grundkörpers 101 mit der Vertiefung 202 koppelt, und in der zweiten Seitenfläche 204 ein zweiter Druckluftanschluss 205, welcher eine Umgebung des Grundkörpers 101 mit der Vertiefung 202 koppelt, derart ausgebildet, dass bei Einbringen einer Druckluft über den ersten Druckluftanschluss 105 oder den zweiten Druckluftanschluss 205 zumindest eines der Anschlagelemente aus der Spannfläche 102 ausfahrbar ist.The clamping jaw 100 is for a clamping system 400 (see Fig. 4 ), in particular a vice system, is provided. The clamping jaw 100 can be attached to a clamping element 401, 402 (see Fig. 4 ) can be detachably attached. A base body 101 has a clamping surface 102 on which a workpiece 401 (see Fig. 4 ) can be clamped, and a fastening surface 201 which can be fastened to the clamping system 400. Guide bores are formed in the base body 101 between the fastening surface 201 and the recess 202 of the clamping surface 102. Stop elements are each arranged in the receiving bores 509 in such a way that the stop elements can be extended and retracted from the clamping surface 102, so that the extended stop elements form a support for the workpiece 401. In the first side surface 104, a first compressed air connection 105, which couples the surroundings of the base body 101 with the recess 202, and in the second side surface 204 a second compressed air connection 205, which couples an environment of the base body 101 with the recess 202, is designed in such a way that when a compressed air is introduced via the first compressed air connection 105 or the second compressed air connection 205, at least one of the stop elements can be extended out of the clamping surface 102.

Mittels Druckluft können die Anschlagelemente 103 ausgefahren werden. Dabei können Anschlagelemente 103, welche nicht benötigt werden, wieder in die Aufnahmebohrung hineingedrückt werden. Die ausgefahrenen Anschlagelemente 103 bilden eine Auflagefläche für das Werkstück 401. Mit anderen Worten liegt das Werkstück 401 auf den gewünschten Anschlagelementen 103 auf, während die beiden Spannelemente 402, 403 zueinander bewegt werden und das Werkstück 401 einspannen. Die Anschlagelemente 103 sind zylindrisch als Positionierstifte ausgebildet und.The stop elements 103 can be extended by means of compressed air. Stop elements 103, which are not required, can be returned to FIG the mounting hole must be pressed in. The extended stop elements 103 form a support surface for the workpiece 401. In other words, the workpiece 401 rests on the desired stop elements 103 while the two clamping elements 402, 403 are moved towards one another and clamp the workpiece 401. The stop elements 103 are cylindrical and designed as positioning pins.

Der Grundkörper 101 der Spannbacke 100 weist die Spannfläche 102 auf, an welcher das Werkstück 401 anliegt und Spannkräfte übertragen werden. Gegenüberliegend zu der Spannfläche 102 weist der Grundkörper 101 die Befestigungsfläche 201 auf, mittels welcher der Grundkörper 101 an einem der Spannelemente für 101, ferner 2 befestigt werden kann. Die Befestigungsfläche 201 weist eine taschenförmige Vertiefung 202 auf, welche derart ausgebildet ist, dass alle Aufnahmebohrungen 509 zumindest teilweise mit der Vertiefung 202 gekoppelt sind. Nach Befestigung der Befestigungsfläche 201 an einem Spannelement 402, 403 deckt das Spannelement 402, 403 die Vertiefung 202 komplett ab, sodass zwischen der Befestigungsfläche 201 und dem Spannelement 402, 403 im Bereich der Vertiefung 202 ein geschlossenes Volumen gebildet wird.The base body 101 of the clamping jaw 100 has the clamping surface 102 on which the workpiece 401 rests and clamping forces are transmitted. Opposite to the clamping surface 102, the base body 101 has the fastening surface 201, by means of which the base body 101 can be fastened to one of the clamping elements for 101, furthermore 2. The fastening surface 201 has a pocket-shaped recess 202 which is designed such that all of the receiving bores 509 are at least partially coupled to the recess 202. After fastening the fastening surface 201 to a clamping element 402, 403, the clamping element 402, 403 completely covers the recess 202, so that a closed volume is formed between the fastening surface 201 and the clamping element 402, 403 in the region of the recess 202.

Der erste und der zweite Druckluftanschluss 105, 205, welche an entsprechenden Seitenflächen (Stirnflächen) 104, 204 des Grundkörpers 101 gegenüberliegend voneinander angeordnet sind, bilden einen Durchgang bzw. eine Kopplung zwischen einer Umgebung der Spannbacke 100 und der Vertiefung 202, bzw. dem eingeschlossenen Volumen.The first and the second compressed air connection 105, 205, which are arranged opposite one another on corresponding side surfaces (end surfaces) 104, 204 of the base body 101, form a passage or a coupling between the surroundings of the clamping jaw 100 and the recess 202 or the enclosed one Volume.

Der erste und der zweite Druckluftanschluss 105, 205 sind dabei derart angeordnet, dass eine Druckluftpistole oder ein anderer beliebiger Druckluftanschluss ankoppelbar ist, sodass Druckluft in die Vertiefung 202 bzw. das angeschlossene Volumen eingebracht werden kann, sodass aufgrund des Überdrucks die Anschlagelemente 103 von der Spannfläche 102 ausgefahren werden, sodass das Werkstück 401 auf die entsprechenden Anschlagelemente 103 aufgelegt werden kann.The first and the second compressed air connection 105, 205 are arranged in such a way that a compressed air gun or any other compressed air connection can be coupled so that compressed air can be introduced into the recess 202 or the connected volume, so that the stop elements 103 are removed from the clamping surface due to the overpressure 102 be extended so that the workpiece 401 can be placed on the corresponding stop elements 103.

Mit den gegenüberliegend angeordneten Druckluftanschluss senden 105, 205 ergibt sich der Vorteil, dass die Spannbacke 100 an beiden gegenüberliegenden Spannelementen 402, 403 angeordnet werden kann, wobei immer einer der beiden Druckluftanschlüsse 402, 403 von einer gewünschten Seite des Spannsystems 400 von einer Bedienperson zugänglich ist. Somit können Spannbacke 100 bereitgestellt werden, welche zur Montage an einem linken wie auch ein einem rechten Spannelement baugleich ausgestaltet werden.With the oppositely arranged compressed air connection send 105, 205 there is the advantage that the clamping jaw 100 can be arranged on both opposing clamping elements 402, 403, one of the two compressed air connections 402, 403 always being accessible from a desired side of the clamping system 400 by an operator . Clamping jaws 100 can thus be provided which are designed to be identical in construction for assembly on a left-hand as well as a right-hand clamping element.

Jede der Druckluftanschlüssen 105, 205 bzw. Lufteinlasseinheiten ist über Verbindungskanäle mit einem taschenförmigen Freiraum bzw. Vertiefung 202 verbunden, der sich auf der, dem Spannmittel (Spannelement) zugewandten Seite der Spannbacke befindet. Durch die Zufuhr von Druckluft erhöht sich in der taschenförmigen Vertiefung 202 das Druckniveau, wodurch die Positionierstifte/Anschlagelemente 103 aus der Spannfläche 102 heraus nach außen gedrückt werden.Each of the compressed air connections 105, 205 or air inlet units is connected via connecting channels to a pocket-shaped free space or recess 202 which is located on the side of the clamping jaw facing the clamping means (clamping element). The supply of compressed air increases the pressure level in the pocket-shaped recess 202, as a result of which the positioning pins / stop elements 103 are pressed out of the clamping surface 102.

Je nach gewünschter Position des Werkstücks 401 werden dann verschiedene Anschlagelemente 103 zurück gedrückt. Das Werkstück 401 wird dann an die außen verbleibenden Anschlagelemente 103 angeschlagen bzw. aufgelegt. Somit kann eine Vielzahl von Werkstücken 401 jeweils wiederholgenau positioniert werden.Depending on the desired position of the workpiece 401, various stop elements 103 are then pushed back. The workpiece 401 is then hit or placed against the stop elements 103 that remain on the outside. Thus, a multiplicity of workpieces 401 can each be positioned with repeat accuracy.

Wegen der Baugleichheit von fixen und beweglichen Spannbacke 100, ist es möglich, die beiden gegenüber liegenden Druckluftanschlüssen 105, 205 bzw. Lufteinlasseinheiten mit Druckluft zu beaufschlagen. Dadurch ist nur noch eine Version der Spannbacke 100 zum Anbringen an gegenüberliegende Spannelemente 402, 403 eines Schraubstocksystems 400.Because the fixed and movable clamping jaws 100 are identical, it is possible to apply compressed air to the two opposite compressed air connections 105, 205 or air inlet units. As a result, there is only one version of the clamping jaw 100 for attachment to opposing clamping elements 402, 403 of a vice system 400.

Zum Eindrücken der Anschlagelemente 103 kann die Luft aus der Vertiefung definiert, beispielsweise über die unten beschriebene Ventilvorrichtung 501 (siehe Fig. 5), entweichen. Somit weist der Lufteinlass in die Vertiefung 202 eine sozusagen exakt definierte zulässige minimale Gegenströmrichtung auf.To press in the stop elements 103, the air can be defined from the recess, for example via the valve device 501 described below (see Fig. 5 ), escape. The air inlet into the depression 202 thus has an exactly defined permissible minimum counterflow direction, so to speak.

Zudem weist die Spannbacke 100 einen Dichtring 203 auf, welcher umlaufend um die Vertiefung 202 zur Abdichtung der Vertiefung 202 von der Umgebung angeordnet ist. Der Dichtring 203 kann beispielsweise aus Kunststoff, insbesondere aus gummiartigen Kunststoff ausgebildet sein.In addition, the clamping jaw 100 has a sealing ring 203 which is arranged circumferentially around the recess 202 for sealing the recess 202 from the environment. The sealing ring 203 can for example be made of plastic, in particular of rubber-like plastic.

Fig. 3 zeigt eine schematische Darstellung zweier Spannbacke 100 gemäß der Ausführungsform aus Fig. 1 und Fig. 2. daraus ist insbesondere ersichtlich, dass der Druckluftanschluss 105 der Spannbacke 100 und der Druckluftanschluss 205 der Spannbacke 100'von derselben Seite zugänglich sind, sodass es nicht notwendig ist für jede Seite eine angepasste Spannbacke 100 zu fertigen. Fig. 3 FIG. 11 shows a schematic representation of two clamping jaws 100 according to the embodiment from FIG FIGS. 1 and 2 . from this it can be seen in particular that the compressed air connection 105 of the clamping jaw 100 and the compressed air connection 205 of the clamping jaw 100 ′ are accessible from the same side, so that it is not necessary to produce an adapted clamping jaw 100 for each side.

Fig. 4 zeigt eine schematische Darstellung eines Spannsystems 400 gemäß einer beispielhaften Ausführungsform der vorliegenden Erfindung. Fig. 4 shows a schematic representation of a clamping system 400 according to an exemplary embodiment of the present invention.

Das Spannsystem 400 ist derart ausgebildet, dass zwei, insbesondere plattenförmige, Spannelemente 402, 403 zueinander mechanisch, elektrisch, pneumatisches oder hydraulisch bewegt werden können, um zwischen ihnen ein Werkstück 401 einzuspannen. Dabei ist es notwendig, das Werkstück 401 in einer gewünschten Ausrichtung zwischen den beiden Spannelementen 402, 403 einzuspannen. Damit das Werkstück 401 definiert ausgerichtet werden kann, wird die erfindungsgemäße Spannbacke 100 an zumindest einem der Spannelemente 402, 403 lösbar befestigt.The clamping system 400 is designed such that two, in particular plate-shaped, clamping elements 402, 403 can be moved mechanically, electrically, pneumatically or hydraulically with respect to one another in order to clamp a workpiece 401 between them. It is necessary to clamp the workpiece 401 in a desired alignment between the two clamping elements 402, 403. So that the workpiece 401 can be aligned in a defined manner, the clamping jaw 100 according to the invention is releasably fastened to at least one of the clamping elements 402, 403.

Die Spannbacke 100 kann auf einer festen oder beweglichen Seite eines Spannelements 402, 403 angeordnet sein.The clamping jaw 100 can be arranged on a fixed or movable side of a clamping element 402, 403.

Das Spannsystem 400 ist in einem Zustand dargestellt, in welchen ein Werkstück 401 zwischen dem linken Spannelement 402 und dem rechten Spannelement ferner 3 eingeklemmt ist. Die erfindungsgemäße Spannbacke 100 ist an dem linken Spannelement 402 lösbar befestigt. Der Dichtring 203 dichtet das innere Volumen der Vertiefung 202 ab. Über den Druckluftanschluss 105 wird Druckluft eingebracht, sodass die Anschlagelemente 103 ausfahren. Die Anschlagelemente 103, welche nicht zu Positionierung des Werkstücks 401 benötigt werden, werden anschließend erneut eingedrückt. Wie in Fig.4 dargestellt, liegt das Werkstück 401 auf einem vorbestimmten ausgefahrenen Anschlagelement 103 zur exakten Positionierung auf.The clamping system 400 is shown in a state in which a workpiece 401 is also clamped between the left clamping element 402 and the right clamping element 3. The clamping jaw 100 according to the invention is releasably attached to the left clamping element 402. The sealing ring 203 seals the inner volume of the recess 202. Compressed air is introduced via the compressed air connection 105, so that the stop elements 103 extend. The stop elements 103, which are not required for positioning the workpiece 401, are then pressed in again. As in Fig. 4 shown, the workpiece 401 rests on a predetermined extended stop element 103 for exact positioning.

Aufgrund der erfindungsgemäßen Konstruktion der Spannbacke 100 kann diese erneut von dem linken Spannelement 402 gelöst werden, gewendet werden und beispielsweise an dem rechten Spannelement 403 befestigt werden. Entsprechend würde der zweite Druckluftanschluss 205 in der Bildebene sichtbar sein. Somit kann von derselben Seite desDue to the construction of the clamping jaw 100 according to the invention, it can be released again from the left clamping element 402, turned and, for example, fastened to the right clamping element 403. The second compressed air connection 205 would accordingly be visible in the image plane. Thus, from the same side of the

Fig. 5 und Fig. 6 zeigen schematische Darstellungen einer Ventilvorrichtung 501 einer Spannbacke 100 gemäß einer beispielhaften Ausführungsform der vorliegenden Erfindung. Eine entsprechende Ventilvorrichtung 501 kann beispielsweise an dem ersten Druckluftanschluss 105 oder dem zweiten Druckluftanschluss 205 eingerichtet sein. Die Ventilvorrichtung 501 ist derart eingerichtet, dass ein vorbestimmter Volumenstrom von der Vertiefung 202 in die Umgebung ausströmbar ist. FIGS. 5 and 6 show schematic representations of a valve device 501 of a clamping jaw 100 according to an exemplary embodiment of the present invention. A corresponding valve device 501 can be set up at the first compressed air connection 105 or the second compressed air connection 205, for example. The valve device 501 is set up in such a way that a predetermined volume flow can flow out from the depression 202 into the environment.

Damit wird das geschlossene Volumen, welches mittels der Vertiefung 202 zwischen der Befestigungsfläche 201 und dem Spannelement 402, 403, an welchen eine Spannbacke 100 befestigt ist, gebildet wird, nicht hermetisch abgedichtet sondern ein entsprechend vorliegender Überdruck kann mit einem vorbestimmten Volumenstrom in Richtung Umgebung abgebaut werden. Daraus ergibt sich der Vorteil, dass Anschlagelemente 103, welche nicht zur Auflage und Ausrichtung des Werkstücks 401 verwendet werden sollen, in die Aufnahmebohrung hineingedrückt werden können. Durch das Hineindrücken der Anschlagelemente 103 erhöht sich der Innendruck in dem geschlossenen Volumen, welcher durch die oben beschriebene Ventilvorrichtung 501 ausgeglichen werden kann.The closed volume, which is formed by means of the recess 202 between the fastening surface 201 and the clamping element 402, 403 to which a clamping jaw 100 is fastened, is thus not hermetic but a correspondingly existing overpressure can be reduced with a predetermined volume flow in the direction of the environment. This results in the advantage that stop elements 103, which should not be used for supporting and aligning the workpiece 401, can be pressed into the receiving bore. By pressing in the stop elements 103, the internal pressure in the closed volume increases, which can be compensated for by the valve device 501 described above.

Die Ventilvorrichtung 501 weist einen Ventilsitz 502 und ein Ventilelement 503 auf. Der Ventilsitz 502 weist eine Dichtkante 504 auf, welche eine Durchgangsöffnung 505 umgibt, die die Umgebung mit der Vertiefung 202 verbindet. Das Ventilelement 503 ist in der Durchgangsöffnung 505 zwischen einer Öffnungsstellung und einer Dichtstellung beweglich angeordnet, wobei in Dichtstellung die Dichtkante 504 zumindest teilweise auf einer Dichtfläche des Ventilelements 503 anlegbar ist zur zumindest teilweisen abdichtenden Abdichtung der Durchgangsöffnung 505.The valve device 501 has a valve seat 502 and a valve element 503. The valve seat 502 has a sealing edge 504 which surrounds a through opening 505 which connects the surroundings with the recess 202. The valve element 503 is movably arranged in the through opening 505 between an open position and a sealing position, wherein in the sealing position the sealing edge 504 can at least partially rest on a sealing surface of the valve element 503 for at least partially sealing the through opening 505.

Das Ventilelement 503 sitzt somit teilweise dichtend in dem Ventilsitz 502, sodass eine Fluidströmung durch die Durchgangsöffnung 505 reduziert bzw. unterbunden wird. Der Ventilsitz 502 bildet eine Dichtkante um 504 aus, welche in Dichtstellung in dichtenden Kontakt mit dem Ventilelement 503 ist. Das Ventilelement 503 ist beispielsweise ein keilförmiges, kugelförmiges oder zylindrisches Werkstück, welches sich zwischen einer Öffnungsstellung, in welcher das Ventilelement 503 von dem Ventilsitz 502 beabstandet ist und die Durchgangsöffnung 505 somit nicht verschlossen ist, und einer Dichtstellung, in welcher die Durchgangsöffnung 505 nahezu vollständig abgedichtet ist, verfahrbar ist. Insbesondere die Ventilvorrichtung 501 ist derart ausgebildet, dass bei Aufbringen eines Luftdrucks mittels einer Druckluftpistole, die an einem der Druckluftanschlüsse 105, 205 angelegt ist, das Ventilelement 503 von dem Ventilsitz ferner 2 weggedrückt wird, sodass die Durchgangsöffnung 505 geöffnet ist und Luft in die Vertiefung 202 eindringen kann. Alternativ führt ein höherer Druck in der Vertiefung 202 im Vergleich zu der Umgebung dazu, dass das Ventilelement gegen den Ventilsitz 502 gepresst wird, sodass die Dichtstellung eingenommen wird.The valve element 503 is thus partially sealingly seated in the valve seat 502, so that a fluid flow through the through-opening 505 is reduced or prevented. The valve seat 502 forms a sealing edge around 504, which is in sealing contact with the valve element 503 in the sealing position. The valve element 503 is, for example, a wedge-shaped, spherical or cylindrical workpiece, which is between an open position in which the valve element 503 is spaced from the valve seat 502 and the passage opening 505 is thus not closed, and a sealing position in which the passage opening 505 is almost completely is sealed, is movable. In particular, the valve device 501 is designed such that when an air pressure is applied by means of a compressed air gun, which is applied to one of the compressed air connections 105, 205, the valve element 503 is further pushed away from the valve seat, so that the through opening 505 is open and air can enter the recess 202. Alternatively, a higher pressure in the recess 202 in comparison to the surroundings leads to the valve element being pressed against the valve seat 502, so that the sealing position is assumed.

Die Dichtkante 504 bildet eine umlaufende Kontur aus, welche in Dichtstellung einen Sitz für das Ventilelement 503 ausbildet. Die umlaufende Kontur der Dichtkante 504 verläuft um die Durchgangsöffnung 505. Liegt die Dichtkante 504 somit vollumfänglich an dem Ventilelement 504 auf, so wird die Durchgangsöffnung 505 nahezu vollständig abgedichtet.The sealing edge 504 forms a circumferential contour which, in the sealing position, forms a seat for the valve element 503. The circumferential contour of the sealing edge 504 runs around the through-opening 505. If the sealing edge 504 thus lies completely against the valve element 504, the through-opening 505 is almost completely sealed.

Die umlaufende Kontur und das Ventilelement sind derart ausgebildet, dass in Dichtstellung ein definierter beabstandeter Bereich (Spalte 701, siehe Fig. 7) zwischen der Dichtkante 504 und dem Ventilelement 503 vorliegt. Beispielsweise kann entlang der Dichtkante 504 eine Kerbe bzw. eine Entlüftungsnut ausgebildet sein, sodass auch in Dichtstellung von der Umgebung in die Vertiefung 202 oder umgekehrt Luft strömen kann. In Dichtstellung wird der Volumenstrom jedoch stark reduziert. Somit kann nach Aufbringen von Druckluft an dem Druckluftanschluss 105, 205 ein hoher Druck in der Vertiefung 202 aufgebaut werden, um die Anschlagelemente 103 von der Spannfläche 102 auszufahren. Anschließend, nachdem keine Druckluft mehr an einem Druckluftanschluss anliegt, nimmt der Druck in der Vertiefung 202 langsam ab. Somit können beispielsweise ausgefahrenen Anschlagelemente 103, auf welche das Werkstück 401 nicht aufliegen soll, zurück in die Aufnahmebohrungen 509 geschoben werden. Die durch das Einschieben der Anschlagelemente 103 verdrängte Luft in den Aufnahmebohrungen 509 kann über die Vertiefung 202 durch die Durchgangsöffnung 505 in die Umgebung ausströmen. Somit können in einfacher Art und Weise beliebig viele Anschlagelemente 103, welche nicht im ausgefahrenen Zustand benötigt werden, in die Aufnahmebohrungen 509 zurückgeschoben werden.The circumferential contour and the valve element are designed in such a way that, in the sealing position, a defined, spaced-apart area (column 701, see FIG Fig. 7 ) is present between the sealing edge 504 and the valve element 503. For example, a notch or a ventilation groove can be formed along the sealing edge 504, so that air can flow from the surroundings into the recess 202 or vice versa even in the sealing position. In the sealing position, however, the volume flow is greatly reduced. Thus, after compressed air has been applied to the compressed air connection 105, 205, a high pressure can be built up in the recess 202 in order to extend the stop elements 103 from the clamping surface 102. Then, after no more compressed air is present at a compressed air connection, the pressure in the depression 202 slowly decreases. Thus, for example, extended stop elements 103, on which the workpiece 401 should not rest, can be pushed back into the receiving bores 509. The air displaced into the receiving bores 509 by the insertion of the stop elements 103 can flow out into the surroundings via the recess 202 through the through-opening 505. As a result, any number of stop elements 103, which are not required in the extended state, can be pushed back into the receiving bores 509 in a simple manner.

Die umlaufende Kontur der Dichtkante 504 weist in dem gezeigten Beispiel eine polygone Form aus. Das Ventilelement 503 ist als Kugel ausgebildet.The circumferential contour of the sealing edge 504 has a polygonal shape in the example shown. The valve element 503 is designed as a ball.

Die Ventilvorrichtung 501 weist ein Federelement 506 auf, welches das Ventilelement 503 in Dichtstellung vorspannt. Ferner weist der Grundkörper 101 beispielsweise zusätzlich eine Entlüftungsöffnung (Verbindungsöffnung 507) auf, welche die Vertiefung 202 und die Umgebung derart verbindet, dass ein vorbestimmter Volumenstrom von der Vertiefung 202 in die Umgebung ausströmbar ist.The valve device 501 has a spring element 506 which prestresses the valve element 503 in the sealing position. Furthermore, the base body 101 additionally has, for example, a ventilation opening (connection opening 507) which connects the depression 202 and the surroundings in such a way that a predetermined volume flow can flow out from the depression 202 into the surroundings.

Ferner wird dargestellt, dass eine Dichtung 508, beispielsweise ein Dichtring, in einer entsprechenden Aufnahmenut eines Anschlagelements 103 vorliegen kann, sodass eine Dichtung zwischen dem Anschlagelement 103 und dem Grundkörper 101 in der Aufnahmebohrung 509 vorgesehen ist.It is also shown that a seal 508, for example a sealing ring, can be present in a corresponding receiving groove of a stop element 103, so that a seal is provided between the stop element 103 and the base body 101 in the receiving bore 509.

Fig. 7 zeigt eine schematische Darstellung eines Druckluftanschlusses 105 einer Spannbacke 100 gemäß einer beispielhaften Ausführungsform der vorliegenden Erfindung. Das Ventilelement 503 ist beispielsweise als Kugel 503 ausgebildet und die Kontur der Dichtkante 504 als eine umlaufende polygone, insbesondere 6-eckige, Kontur. Liegt die Kugel 503 in Dichtstellung auf dem Ventilsitz 502 auf, so findet kein vollumfänglicher Kontakt zwischen der Dichtkante 504 und der Kugel 503 statt. Insbesondere in den Eckbereichen der polygonen Kontur bilden sich kleine Spalte 701 aus, durch welche Druckluft aus der Vertiefung 202 in die Umgebung oder umgekehrt strömen kann. Fig. 7 shows a schematic representation of a compressed air connection 105 of a clamping jaw 100 according to an exemplary embodiment of the present invention. The valve element 503 is designed, for example, as a ball 503 and the contour of the sealing edge 504 as a circumferential polygonal, in particular hexagonal, contour. If the ball 503 rests on the valve seat 502 in the sealing position, there is no full contact between the sealing edge 504 and the ball 503. In particular, in the corner areas of the polygonal contour, small gaps 701 are formed, through which compressed air can flow from the depression 202 into the environment or vice versa.

Somit wird eine automatische Entlüftung des taschenförmigen Freiraums/Vertiefung 202 bereitgestellt. Eine solche automatische Entlüftung kann über definierte Öffnungen 701 zwischen taschenförmigem Vertiefung 202 und der Umgebung erfolgen, d. h. zwischen dem Ventilelement 503 und dem Ventilsitz 502. Dabei wird die Dichtung, die den Freiraum gegen die Spanneinrichtung abdichtet, gezielt unterbrochen.Automatic venting of the pocket-shaped free space / depression 202 is thus provided. Such an automatic venting can take place via defined openings 701 between the pocket-shaped recess 202 and the environment, ie between the valve element 503 and the Valve seat 502. The seal, which seals the free space against the clamping device, is specifically interrupted.

Ergänzend ist darauf hinzuweisen, dass "umfassend" keine anderen Elemente oder Schritte ausschließt und "eine" oder "ein" keine Vielzahl ausschließt. Ferner sei darauf hingewiesen, dass Merkmale oder Schritte, die mit Verweis auf eines der obigen Ausführungsbeispiele beschrieben worden ist, auch in Kombination mit anderen Merkmalen oder Schritten anderer oben beschriebener Ausführungsbeispiele verwendet werden können. Bezugszeichen in den Ansprüchen sind nicht als Einschränkung anzusehen.In addition, it should be pointed out that “comprising” does not exclude any other elements or steps and “a” or “an” does not exclude a plurality. It should also be pointed out that features or steps that have been described with reference to one of the above exemplary embodiments can also be used in combination with other features or steps of other exemplary embodiments described above. Reference signs in the claims are not to be regarded as a restriction.

Bezugszeichenliste:List of reference symbols:

100100
SpannbackeClamping jaw
101101
GrundkörperBase body
102102
SpannflächeClamping surface
103103
AnschlagelementStop element
104104
erste Seitenflächefirst side face
105105
erster Druckluftanschlussfirst compressed air connection
201201
BefestigungsflächeMounting surface
202202
Vertiefungdeepening
203203
DichtringSealing ring
204204
zweite Seitenflächensecond side faces
205205
zweiter Druckluftanschlusssecond compressed air connection
400400
SpannsystemClamping system
401401
Werkstückworkpiece
402402
SpannelementClamping element
403403
SpannelementClamping element
501501
VentilvorrichtungValve device
502502
VentilsitzValve seat
503503
VentilelementValve element
504504
DichtkanteSealing edge
505505
DurchgangsöffnungThrough opening
506506
FederelementSpring element
507507
VerbindungsöffnungConnection opening
508508
Dichtungpoetry
509509
AufnahmebohrungMounting hole
701701
Spaltgap

Claims (13)

  1. A clamping jaw (100) for a clamping system (400), in particular a vice system, the clamping jaw (100) comprising
    a base body (101) comprising a clamping surface (102) on which a workpiece (401) can be clamped, and a fastening surface (201) which can be fastened to the clamping system (400),
    wherein the mounting surface (201) is opposite to the clamping surface (102), wherein the mounting surface (201) has a recess (202),
    wherein guide bores are formed in the base body (101) between the mounting surface (201) and the recess (202) of the clamping surface (102),
    stop elements (103), which are respectively arranged in the receiving bores (509) in such a way that the stop elements (103) can be extended and retracted from the clamping surface (102), so that the extended stop elements (103) form a support for the workpiece (401),
    wherein the base body (101) comprises a first side surface (104) and an opposite second side surface (204), each formed between the mounting surface (201) and the clamping surface (102),
    wherein a first compressed air connection (105), which couples an environment of the base body (101) to the recess (202), is formed in the first side surface (104), and a second compressed air connection (205), which couples an environment of the base body (101) to the recess (202), is formed in the second side surface (204), in such a way that, when compressed air is introduced via the first compressed air connection (105) or via the second compressed air connection (205), at least one of the stop elements (103) can be extended from the clamping surface (102).
  2. The clamping jaw (100) according to claim 1,
    wherein at least the first compressed air connection (105) or the second compressed air connection (205) comprises a valve device (501) which is formed in such a way that a predetermined volumetric flow can be discharged from the recess (202) into the environment.
  3. The clamping jaw (100) according to claim 2,
    wherein the valve device (501) comprises a valve seat (502) and a valve element (503),
    wherein the valve seat (502) comprises a sealing edge (504) which comprises a through opening (505) connecting the environment to the recess (202),
    wherein the valve element (503) is movably arranged in the through opening (505) between an open position and a sealed position,
    wherein in the sealing position the sealing edge (504) can be placed at least partially on a sealing surface of the valve element for at least partial sealingly sealing of the through opening (505).
  4. The clamping jaw (100) according to claim 3,
    wherein the sealing edge (504) forms a circumferential contour which, in the sealing position, forms a seat for the valve element (503).
  5. The clamping jaw (100) according to claim 4,
    wherein the circumferential contour and the valve element are formed in such a way that in the sealing position there is a defined spaced area between the sealing edge (504) and the valve element (503).
  6. The clamping jaw (100) according to claim 3 or 4,
    wherein the circumferential contour of the sealing edge (504) forms an annular shape or a polygonal shape, in particular a rectangular or hexagonal shape.
  7. The clamping jaw (100) according to any one of claims 3 to 6,
    wherein the valve element (503) is formed as a ball or as a wedge.
  8. The clamping jaw (100) according to any one of claims 3 to 7,
    wherein the valve device (501) comprises a spring element (506) which biases the valve element (503) into the sealing position.
  9. The clamping jaw (100) according to any one of claims 1 to 8,
    wherein the base body (101) has a vent opening which connects the recess (202) and the environment in such a way that a predetermined volume flow can be discharged from the recess (202) into the environment.
  10. The clamping jaw (100) according to any one of claims 1 to 8, further comprising
    a sealing ring (203) arranged circumferentially around the recess (202) for sealing the recess (202) from the environment.
  11. A clamping system (400), in particular a vice system, comprising
    two mutually movable clamping elements (402, 403),
    at least one clamping jaw (100) according to any one of claims 1 to 10,
    wherein the clamping jaw (100) is detachably attached to the clamping element (402),
    wherein the clamping jaw (100) is attached to the clamping element (402) in such a way that the recess (202) is sealingly closed from the environment by means of the clamping element (402).
  12. A method of clamping a workpiece with the clamping system (400) according to claim 11,
    fastening the clamping jaw (100) to one of the clamping elements (402, 403) in such a way that the recess (202) of the clamping jaw (100) is covered in a sealing manner by the clamping element (402),
    introducing a compressed air via the first compressed air connection (105) in order to extend at least one of the stop elements (103) from the clamping surface (102),
    placing the workpiece on the at least one stop element (103), and
    moving the clamping elements towards each other so that the workpiece (401) is clamped between the clamping surface (102) of the clamping jaw (100) and the other clamping element (402).
  13. The method according to claim 12,
    moving the clamping elements (401, 402) apart,
    releasing the clamping jaw (100) from the one clamping element (402),
    turning the clamping jaw (100) and fastening the clamping jaw (100) to the other clamping element (403),
    introducing a compressed air via the second compressed air connection (205) to extend at least one of the stop elements (103) from the clamping surface (102),
    moving the clamping elements towards each other so that another workpiece (401) is clamped between the clamping surface (102) of the clamping jaw (100) and the other clamping element (403).
EP18214183.8A 2017-12-22 2018-12-19 Pneumatic vice jaw for a vice Active EP3501736B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017131174.2A DE102017131174B3 (en) 2017-12-22 2017-12-22 Pneumatic jaw for a vice

Publications (2)

Publication Number Publication Date
EP3501736A1 EP3501736A1 (en) 2019-06-26
EP3501736B1 true EP3501736B1 (en) 2021-05-26

Family

ID=64755140

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18214183.8A Active EP3501736B1 (en) 2017-12-22 2018-12-19 Pneumatic vice jaw for a vice

Country Status (2)

Country Link
EP (1) EP3501736B1 (en)
DE (1) DE102017131174B3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113182907B (en) * 2021-03-31 2022-06-14 成都飞机工业（集团）有限责任公司 Flexible clamping device and clamping method

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5407185A (en) * 1993-08-26 1995-04-18 Hughes Aircraft Company Reconfigurable clamp
EP0899061A3 (en) * 1997-08-29 2002-06-26 Schunk GmbH & Co. KG Fabrik für Spann- und Greifwerkzeuge Clamping jaws and device for clamping workpieces
US6250619B1 (en) * 1998-02-03 2001-06-26 Cna Manufacturing Systems, Inc. Clamp suitable for use at high temperatures in a flexible tooling apparatus
DE102009057917A1 (en) 2009-12-11 2011-06-16 Sporer, Klaus, Dipl.-Ing. Positioning device for clamping system, particularly bench vice, has multiple stop elements which are guided in guiding holes and are moved between positions opposite to clamp surface

Also Published As

Publication number Publication date
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EP3501736A1 (en) 2019-06-26

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