EP1731264A2 - Combination of clamps for fixing workpieces - Google Patents

Abstract

The device has two screw clamps (3, 5) that are connected with each other over a diagonal unit, where each clamp has two clamp arms (13, 15). A clamping axis runs between the arms for clamping workpieces. A guide rail (17) holds the arms at a distance from each other. An adjusting unit (21) changes the position of clamped workpieces perpendicular to the clamping axis or the position of the clamping axis perpendicular to the clamped workpieces. Independent claims are also included for the following: (1) a double arrangement for arranging a device or an arrangement on a side of the workpieces (2) an adjusting unit for application in a device and/or arrangement for fixing the workpieces.

Description

The invention relates to a device and an arrangement for fixing workpieces, as well as a double arrangement of two devices or arrangements for fixing workpieces and an adjusting device for use in such a device or arrangement.

In woodworking or metalworking often two individual workpieces are clamped together by means of one or more screw clamps to connect them together, for example by gluing or welding. Especially when the surface to be joined of two workpieces is small compared to their transverse extent, it is difficult to stably apply a screw clamp and apply enough pressure along the chucking axis without the two workpieces folding against each other and jumping out of the clamp. When gluing soft woods occurs in addition to the problem that to protect the wood liners between the arms of the clamp and the workpiece are clamped so that a clean alignment of the screw clamp axis or clamping axis to the workpiece is difficult.

The FR 2 593 422 A1 proposes various versions of ferrules that can be used for gluing picture frames or when spacing concreting shells. A plurality of legs are hingedly connected, wherein clamping screws are provided at the outer ends of the outermost legs and centrally on the extension legs. With the arranged on the opposite outer legs clamping screws a fixation of the ferrule on the picture frame is achieved such that With the clamping screws on the extension legs a screw pressure perpendicular to the clamping axis between the opposite outer legs can be constructed.

The AT 391 830 B discloses an arrangement with two double-acting clamping and clamping devices and other clamping devices for Kantenanleimung squared lumber on the front side of boards. At the opposite ends of two U-shaped arms of the clamping and clamping devices cams are arranged with rubber coating that come when tightening a clamping screw to rest on the top and bottom of the board and clamp there on further actuation of the clamping screw. As a result, sufficient clamping force is applied between the U-shaped arms via the cams, so that the clamping screws press on by tightening the anzuleimende squared timber against the edge of the wooden board.

Also the FR 2 527 127 A discloses an edge banding arrangement in which a screw clamp is clamped on the top and bottom of a board. Transverse to the clamping direction of the screw clamp extends a beam on which clamping screws are arranged, with which the edge board is pressed against the front side of the board, but after already the clamp was firmly screwed onto the board.

From the DE 1 094 971 A is a clamping arrangement is known in which the side of a large board clamps are clamped. Before tightening the screw clamps feet are inserted under the screw clamps, between which runs an extension rail from one side to the other side of the large-scale board. Sliding screws are mounted on the extension rail, with which a pressing force is exerted on the surface of the large board to press smaller workpieces against the large-area board.

Similarly, the works from the DE 3 533 355 A1 known clamping arrangement, applied at the opposite side edges of a workpiece to be clamped pieces of equipment and by means of a clamping device, which is transverse to the workpiece runs, be braced against each other. The connecting rail between the two bearing points carries a displaceable clamping element with which a pressing force can be exerted on the workpiece transversely to the direction of the connecting rail. Again, first the voltage across the connecting rail between the two investment points to build before the cross-clamping device is actuated.

From the US 5,094,435 A a centering device for centering to be welded to a pipe end flanges is known. The flange is gripped at its periphery by means of several clamping devices, which are then driven over the outer circumference of the pipe end and there serve by adjusting screws of the centering of the flange relative to the pipe end.

The GB 1404 150 A describes a U-shaped clamping device with a clamping device arranged on the middle leg. The clamping device comprises a knurled nut, a thread guided through the middle limb and a clamping rail arranged on the outside of the middle limb and arranged on the outside tip of the thread. By turning the knurled nut, the clamping rail clamps a profile which is inserted on the outside of the center leg between two flange jaws.

It is an object of the invention to provide a device and an arrangement for fixing workpieces as well as an adjustment aid, which considerably simplify the clamping operation even with complex workpieces.

This object is achieved with the features of claim 1, 2, 17 and 19, respectively.

Advantageous embodiments are the subject of dependent claims.

According to claim 1, a device for fixing workpieces is provided with at least two arms, between which a workpiece is clamped, so at least one clamping axis between the at least two arms extends. Of course, the term "clamping axis" also includes a clamping surface or a clamping volume, for example, if the two arms has two completely flat faces and the arms or an arm is pushed together perpendicular to the surfaces to clamp the workpiece. Furthermore, it is possible, starting from a clamping point to build a clamping or pressure axis to a plurality of mutually offset points, for example when the workpiece between two fixed arms and an arm is clamped with a clamping device, resulting in two clamping axes.

The at least two arms are held spaced from each other via at least one connecting element, so that the at least one connecting element receives the counterforce when clamping the workpiece. In addition, the device has at least one adjusting device, with which the position of the workpiece to be clamped is at least perpendicular to the at least one clamping axis variable. Or in an alternative embodiment, the position of the clamping axis (s) of the at least one clamping device is adjusted relative to the workpiece to be clamped by means of the adjusting device. By adjusting the position of the workpiece relative to the clamping points or the clamping line or clamping surface can be adjusted exactly. At the same time, the adjusting device serves to support the workpiece with respect to the device (for example, the workpiece is inserted into the device from above) or to mount the device to the workpiece (for example, when the device is placed on the workpiece from above). In the alternative embodiment, the at least one adjusting device serves to support the at least one tensioning device. It is therefore no longer necessary that the workpiece held at the same time during clamping and possibly even to other clamping aids (such as liners) must be aligned. That is, an orientation of the position of the workpiece to be clamped is carried out before the clamping of the workpiece by means of the clamping device (s). If the workpiece is already aligned, it is clamped.

In the arrangement according to claim 2, two devices according to claim 1 are connected or connectable to each other by at least one transverse element, wherein at least one adjusting device may be part of the device, or part of the device. Here is the position of the two clamping devices to each other at least temporarily determined by the one transverse element, so that a clamping of the workpiece between at least two Einspannachsen can be done. Particularly in the case of workpieces in which clamping is to take place over a larger area or over larger intermediate distances, the alignment of the at least two clamping devices relative to one another also facilitates the clamping operation. Again, an alignment of the workpiece to be clamped relative to the clamping axis is achieved via the adjusting device, advantageous against all clamping axes. For example, two clamping devices in the form of screw clamps can be actuated and uniformly tightened at the same time, while the alignment of the workpiece to the screw clamps is maintained unchanged by the adjusting device. It thus turns for the hobbyist or craftsman of individual pieces edited a considerable simplification of the workflow while increasing the precision.

Advantageously, the connecting element is a rail which connects the two arms to one another and on which at least one of the arms is displaceably arranged in the rail direction. For cost reasons and for reasons of versatility, for example, such a device is a conventional screw clamp.

The at least one adjusting device is advantageously arranged on one or more of the arms, on at least one of the transverse elements or on at least one of the connecting elements, so that the positional relationship between the adjusting device and the clamping points or
surfaces is set. It is also achieved a reduction of the necessary elements and a faster device arrangement or device. If the adjusting device, for example, arranged on the device according to claim 1, it can be used as a single element flexible for resting on the workpiece to be clamped.

In a particularly advantageous embodiment, the at least one adjusting device has a support element for supporting the workpiece relative to the Clamping device or arrangement or for aligning the clamping device on the workpiece. Advantageously, the support element has a support surface or a support line with which the workpiece as a whole comes to rest on the support surface or line, or the tensioning device or arrangement itself is held stably aligned relative to the workpiece when resting on it (eg, standing).

By a height adjustment device on the adjusting device, the alignment of the workpiece can be achieved in a particularly simple manner with respect to the clamping axis of the device or arrangement. If, for example, a plurality of adjusting devices are provided, a height adjustment of the workpiece relative to the arrangement or device can be adjusted by a height adjustment device on each of the adjusting devices or on an adjusting device with a plurality of height adjustment devices, so that an alignment is not limited to a height adjustment by parallel offset.

Advantageously, the height adjustment device is, for example, partially integrated into the at least one connecting element or the at least one transverse element, for example a threaded capsule or a thread is provided in the connecting element or in the transverse element into which a threaded rod is inserted and can be turned up and down by rotation. Or the height adjustment device has a running on a threaded portion nut or knurled nut, with the example, a cross member or a connecting element is height adjustable.

If one or more of the adjusting devices are arranged displaceably or displaceably on a transverse element or a connecting element, then the adjusting devices can be offset relative to one another or to the arms of the device or arrangement, whereby an adaptation to the size or shape of the workpiece to be clamped is made possible. If the workpiece is, for example, a frame, then an adjusting device can be placed in such a position on which the frame rests on the support element of the adjusting device.

Instead of a flat support member, a support member may be provided with a bearing point at least in a part of the adjusting devices, so that even uneven workpieces can be accurately positioned by the punctual storage.

Most preferably, the transverse element or at least one of the transverse elements of the arrangement on a plurality of spaced recesses or fastening elements, in which at least one of the clamping devices, for example, on one or more of the connecting elements or on the clamping arms can be stored. For example, the clamping devices are simply inserted into the recesses and are thereby aligned in the vertical direction, for example, perpendicular to the work surface. Instead of or in addition to the recesses fastening elements are provided or the recesses have fastening elements with which the clamping devices is temporarily or permanently attached or fastened to the one or more transverse elements. In particular, the re-releasable mounting of the tensioning device or tensioning device on the cross member (s) allows the work process to be carried out initially by inserting or fastening the tensioning device (s) on the transverse element (s), tensioning the workpiece to be clamped, and then clamping the workpiece Tensioning devices is removed from the cross member. This makes it possible, with several clamps clamped several workpieces one after the other exactly using one and the same cross member and then placed, for example, to harden the workpiece to a suitable storage space. Advantageously, the recesses or fasteners are distributed in a grid-like manner distributed over the longitudinal extent of a transverse element, so that depending on the size of the workpiece or the need of multiple clamping axes, the clamping device at different distances or over a predetermined width to each other along the transverse element or the transverse elements can be positioned.

The transverse element or the transverse elements can connect different elements of at least two tensioning devices with each other. It is advantageous here when a cross member connects the connecting elements of the tensioning device with each other. In this case, as described above, to remove the clamping devices themselves from the holder on the cross member, without affecting their function. Advantageously, the transverse element or the transverse elements are designed so that they are self-standing and therefore can record one or more fixtures stable in storage. Advantageously, the clamping devices are accommodated so that their arms are aligned vertically. But there are also provided by the vertical deviating positions or a pivotable mounting of a clamping device or its arms on the cross member, so that on the pivotability of the clamping device, for example, the distances of the clamping axes of adjacent clamping devices are adjustable.

In addition to the vertical pivotability of a tensioning device mounted on the transverse element, a pivotability of the tensioning device in a horizontal plane is particularly advantageously provided, for example, in which the tensioning axis is pivotable relative to the longitudinal extent of the transverse element. This allows, for example, the clamping of triangular workpieces. Alternatively or additionally, the transverse element has recesses or fastening elements with which the attachment. the clamping device is made so that the clamping axes of the clamping devices are at an angle to each other.

By providing stand elements on the cross member (s), on the adjuster (s) and / or on the one or more fasteners, a stationary alignment of the apparatus or assembly to a work surface is enabled. This prevents tipping over of the arrangement or device.

As in a conventional screw clamp advantageously one of the arms or both arms of the clamping device along the connecting device are displaceable, so that the clamping width is adjustable. A displacement of both arms on the connecting device also allows the clamping of stepped workpieces, wherein the steps can be aligned on both sides. Advantageously, an additional contact element is provided which has at least two arms on one side of at least two clamping devices connects to each other, so that the insertion of an intermediate piece is omitted at extended workpieces. Advantageously, the contact element is pivotably mounted on at least one of the arms of the clamping device, so that even with non-parallel, opposite sides of a workpiece, the contact element is flat against a side edge of the workpiece can be applied.

Advantageously, at least three adjusting devices, in particular with three or more height adjusting devices, are used in the arrangement or device, wherein at least three adjusting devices (or height adjusting devices) span one plane. That the connecting lines of at least three contact points for the workpiece to be clamped span a plane, so that the workpiece to be clamped can be aligned in any inclination relative to the clamping axis or axes of the at least one clamping device.

In the double arrangement according to claim 17, it is possible to provide a very high density of contact points of the clamping device side by side, or to carry out a voltage in different clamping axes and directions simultaneously in a workpiece.

• Bei der Anordnung oder Vorrichtung lagert zumindest ein Befestigungselement eine Spannvorrichtung (3,5) schwenkbar an einem der Querelemente (7, 9, 46).
• Bei der Anordnung oder Vorrichtung sind zumindest zwei Spannvorrichtungen (3, 5) am Querelement (7, 9, 46) so gelagert oder lagerbar, dass die Spannachsen der beiden Spannvorrichtungen (3, 5) parallel zueinander verlaufen.
• Bei der Anordnung oder Vorrichtung lagert das zumindest eine Querelement (7, 9, 46, 100) die Verbindungselemente (17) der verschiedenen Spannvorrichtungen (3, 5) beabstandet zueinander.
• Bei der Anordnung oder Vorrichtung ist zumindest einer der Arme (13, 15) am Verbindungselement (17) in Einspannachsenrichtung in veränderbarem Abstand zu zumindest einem der anderen Arme anordenbar.
• Bei der Anordnung oder Vorrichtung weist zumindest einer der Arme (13, 15) ein Spannelement (19) zum Einspannen eines Werkstücks in der zumindest einen Spannachsenrichtung aufweist. Vorteilhaft ist das das Spannelement (19) eine Gewindespindel.
• Bei der Anordnung oder Vorrichtung ist das zumindest eine Verbindungselement (17) eine Schiene.
• Bei der Anordnung oder Vorrichtung sind zwei Arme (13, 15) mit dem Verbindungselement (17) durch eine Schraubzwinge ausgebildet.
• Bei der Anordnung oder Vorrichtung ist zumindest einer der Arme (13, 15) fest mit einem der Verbindungselemente (17) verbunden.

One or more of the following configurations are furthermore advantageous for the arrangement or device, wherein these further embodiments can be implemented individually or in combination:

• In the arrangement or device, at least one fastening element supports a tensioning device (3, 5) pivotably on one of the transverse elements (7, 9, 46).
• In the arrangement or device, at least two tensioning devices (3, 5) are mounted or storable on the transverse element (7, 9, 46) such that the tensioning axes of the two tensioning devices (3, 5) run parallel to one another.
• In the arrangement or device, the at least one transverse element (7, 9, 46, 100) supports the connecting elements (17) of the various tensioning devices (3, 5) at a distance from one another.
• In the arrangement or device at least one of the arms (13, 15) on the connecting element (17) can be arranged in the clamping axis direction at a variable distance from at least one of the other arms.
• In the arrangement or device, at least one of the arms (13, 15) has a clamping element (19) for clamping a workpiece in the at least one clamping axis direction. Advantageously, this is the clamping element (19) a threaded spindle.
• In the arrangement or device, the at least one connecting element (17) is a rail.
• In the arrangement or device, two arms (13, 15) with the connecting element (17) are formed by a screw clamp.
• In the arrangement or device, at least one of the arms (13, 15) is fixedly connected to one of the connecting elements (17).

An adjusting device according to claim 19 may be provided, for example, as a single part for use in a conventional screw clamp, which can then be placed, for example, on the rail or on the connecting element of a clamping device or fastened there. Thus, a conventional screw clamp to a device according to claim 1 can be upgraded. In such an adjusting device, the embodiments as described above are applicable accordingly.

Fig. 1

eine perspektivische Ansicht einer unteren Spannanordnung gemäß einer ersten Ausführungsform,

Fig. 2

eine perspektivische Ansicht einer oberen Spannanordnung gemäß einer ersten Ausführungsform,

Fig. 3

eine Detailansicht eines Querträgers der Anordnungen von Fig. 1 und 2,

Fig. 4

eine perspektivische Ansicht einer unteren Spannanordnung gemäß einer zweiten Ausführungsform,

Fig. 5

eine perspektivische Ansicht einer oberen (Einzel-)Spannanordnung gemäß einer zweiten Ausführungsform,

Fig. 6

eine perspektivische Ansicht einer unten oder oben zu verwendenden Einzelspannanordnung,

Fig. 7

eine perspektivische Ansicht einer unteren Spannanordnung gemäß einer dritten Ausführungsform,

Fig. 8

eine seitliche Ansicht einer Spannordnung in einer vierten Ausführungsform mit verstellbarer Einspannachse, und

Fig. 9

eine fünfte Ausführungsform einer Spannanordnung auf einer Werkplatte.

With reference to figures, embodiments of the invention will be described in detail. Show it:

Fig. 1

a perspective view of a lower clamping arrangement according to a first embodiment,

Fig. 2

a perspective view of an upper clamping arrangement according to a first embodiment,

Fig. 3

a detailed view of a cross member of the arrangements of FIGS. 1 and 2,

Fig. 4

a perspective view of a lower clamping arrangement according to a second embodiment,

Fig. 5

a perspective view of an upper (single) clamping arrangement according to a second embodiment,

Fig. 6

a perspective view of a bottom or top to be used single clamping arrangement,

Fig. 7

a perspective view of a lower clamping arrangement according to a third embodiment,

Fig. 8

a side view of a clamping arrangement in a fourth embodiment with adjustable clamping axis, and

Fig. 9

a fifth embodiment of a clamping arrangement on a worksheet.

1 shows a perspective view of a lower clamping arrangement 1 according to a first embodiment. A first and a second screw clamp 3, 5 are parallel and spaced from each other with a first and a second cross member 7, 9 are connected. In the cross members 7, 9 extend transversely to the longitudinal axis grooves 11, each spaced from the cross member. In each case a groove of the first and second cross member 7, 9, the first and second screw clamp 3, 5 are used with their rails 17. In the illustrated examples, the clamps 3, 5 are loosely inserted into the grooves 11, but it can also be provided that the grooves 11 fasteners, such as a screw inserted next to the grooves, are provided with which the clamps 3, 5 in the Grooves 11 are clamped. The clamps 3, 5 are inserted into the grooves 11, that in each case a fixed clamping arm 13 and a displaceable clamping arm 15 of the screw clamps 3, 5 points vertically upwards. The clamps 3, 5 are conventional screw clamps, wherein, depending on requirements in the cross member 7, 9 clamps of different lengths are used. Accordingly, then the distance between the cross member is adjustable. In this case, the screw clamps 3, 5 with each other also have different lengths, for example, workpieces that have a different clamping width at the two Einspannachsen. The screw clamps 3, 5 each have a threaded spindle 19 with a handle on one side and a pivotally mounted contact element, so that by turning the threaded spindle 19, the workpiece is clamped.

In addition to the grooves 11 9 adjusting elements 21 are arranged along the longitudinal axis of the cross member 7, the upper end relative to the cross members 7, 9 and thus also to the clamping axis between the Festspannarm 13 and the displaceable clamping arm 15 are adjustable. As shown, three adjusting elements 21 are provided per cross member 7, 9. However, more or fewer adjusting elements can be provided, depending on the geometry, size and shape of the workpiece to be held. Each of the adjusting elements 21 has a threaded bolt 23, which is screwed into a threaded sleeve 24 embedded in the cross members 7, 9 and height-adjustable therein. As shown, 23 U-rails 25 are placed on the tops of the threaded bolt, wherein these each bridge a threaded bolt 23 of the first cross member 7 and a threaded bolt 23 of the second cross member 9. Here, the two U-rails 25 are parallel to the clamping axes of the clamps 3, 5, when the rails 25 are aligned horizontally. However, the U-rails 25 can also extend obliquely to the clamping direction or even perpendicular thereto (in the longitudinal direction of the cross member 7, 9 to be arranged running).

A clamped with the clamps 3, 5 workpiece is placed on the top of the U-rails 25 and by turning the threaded bolt 23, the workpiece is adjusted in height, so that the clamping arms 13, 15 and their support points attack exactly at the desired location of the workpiece to be clamped , In a further embodiment, the U-rails 25 or one of the rails are equipped with an alignment element as in a spirit level. In a further embodiment of the Below to be described arrangement, these spirit level elements and the screw 3, 5, a cross member 7, 9, a support element or a rail rider be assigned.

Fig. 2 shows a perspective view of a clamping arrangement 30 which can be placed from above onto a workpiece to be clamped. In one application example, the upper clamping assembly 30 with the lower clamping assembly 1 shown in FIG. 1 can be combined, which are oriented with parallel clamping axes (parallel screw clamps), or with offset by 90 ° clamping axes (screw clamps) on the workpiece. Hereinafter, elements that are the same as or the same as the elements of FIG. 1 are given the same reference numerals. It is self-evident that, for example, when using the arrangement of FIGS. 1 and 2 in combination, more than in each case the two screw clamps 3, 5 or only one screw clamp shown are or will be used. In the arrangement 30 of Fig. 2, the threaded bolt 23 are screwed down through the cross member 7, 9, so that the grooves 11 are still facing up, but the distance adjustment between support point (tip of the threaded bolt 23) and cross member 7, 9th From the cross members starting downwards is adjustable. Compared to Fig. 1, the clamps 3, 5 are used with downwardly facing clamping arms 13, 15. After such a simple conversion of the arrangement of Fig. 1, the assembly 30 of Fig. 2 can be placed from above on a workpiece to be clamped. Preferably, the threaded bolts 23 are provided with standing feet, so that they do not tip over on the workpiece to be clamped, and / or the clamps 3, 5 are clamped in the grooves 11 as described above. Thus, either the cross member 7, 9 parked standing on the workpiece with the feet on the threaded bolt 23 and the clamps 3, 5 hung in the grooves, or stabilized by the clamped clamps 3, 5 arrangement (it is a frame formed by the Schraubzwingenschienen 17 and the cross member 7, 9) is deposited on the workpiece. Again, by screwing or unscrewing the threaded bolt 23, an alignment of the clamping axes of the screw clamps 3, 5 is achieved relative to the starting point on the workpiece.

Fig. 3 shows a side view, a front view and a plan view of one of the cross member 7, 9 in detail. As mentioned above, in the cross member 7, 9 threaded sleeves 24 are recessed, in which the threaded bolts 23 are screwed and depending on requirements up (arrangement 1 of FIG. 1) or down (arrangement 30 of FIG. 2) protrude.

4 shows a perspective view of a lower clamping arrangement 40 according to a second exemplary embodiment. Each screw clamp 3, 5 is associated with a first Verstellreiter 42 and a second Verstellreiter 44. As indicated in Fig. 4, the first Verstellreiter 42 by means of a screw 43 to the rail 17 of the screw 3, 5 are fixed. At the same time serve the first Verstellreiter 42 with its bottom as a base for vertical alignment of the clamping arms 13, 15. The second Verstellreiter 44 are connected via a connecting rod 46 with each other. The second Verstellreiter 44 may also be connected by a fixing device fixed to the rail 17, or loosely seated there and be moved in clamping direction on the rail. Advantageously, the length of the connecting rod 46 is variable, so that the distance between the clamps 3, 5 is variable. By providing a plurality of connecting rods 46 and a plurality of second Verstellreiter 44 more than two screw clamps 3, 5 can be arranged one behind the other. The Verstellreiter 42, 44 have threaded bolts 48, wherein the Verstellreiter are arranged so that the threaded bolts 48 projecting in the direction of clamping axes of the screw clamps 3, 5 and are adjustable in height by turning. The upper ends of the threaded bolts 48 are covered with a plastic cap 50 or rubber cap, so that no traces on the sensitive surfaces of the workpieces by the rotation of the threaded bolt 48 are left. In a further embodiment, a joint connection 52 is provided on at least one of the second Verstellreiter 44, so that the clamping axes of the two screw clamps 3, 5 are mutually angularly adjustable (in Fig. 4 indicated by the curved arrow 52).

5 shows a view of an upper individual clamping arrangement 60 according to a second embodiment, in which a third adjusting saddle 62 and a fourth adjusting saddle 66 are arranged on the rail 17 on a conventional screw clamp 3. Both tabs 62, 66 are adjustably fastened to the rail 17 of the screw clamp 3, 5 with a clamping device (for example grub screw or knurled screw). The third Verstellreiter 62 has a foot 64 at the top of a threaded bolt 48, so that the screw 3 with the foot 64 down on the top of a workpiece is turned off, so that the screw 3 is aligned with the workpiece and remains. The foot 64 is adjustable relative to the body of the third Verstellreiters 62, so that again takes place an alignment of the clamping axis of the screw 3 with respect to the workpiece. It may be provided here that only the third Verstellreiter 62 is provided with a correspondingly large foot area, or in addition the fourth Verstellreiter 66 is used to effect the alignment of the two points of the clamping arms 13, 15 on the workpiece. The fourth Verstellreiter 66 has two threaded bolts 48, which are provided with a cap 50.

Fig. 6 shows a perspective view of a single clamping arrangement 70 which can be used at the top or bottom of the workpiece. Two fifth Verstellreiter 72 are placed on the rail 17 of the screw 3 (arrangement below) or the screw 3 is inserted between the threaded bolt 76 of the fifth Verstellreiter 72, which in turn are placed on the workpiece (arrangement above). Two threaded bolts 76 are attached to a support plate 74 parallel to each other and spaced. On one of the threaded bolt 76, a thumbscrew 78 is screwed, by the height adjustment of a metal plate 80 with two holes for the threaded bolt 76 is parallel to the base surface of the support plate 74 slidably. By turning the knurled screw 78, the height of the support plate 74 relative to the rail 17 or relative to the clamping axis between the clamping arms 13, 15 adjusted. When used below, a foot plate 82 is optionally provided, which is firmly connected to the rail 17, for example by a grub screw. As with the groove 11 of the cross member, the screw 3 can also be used loosely in the base plate 82. The foot plate 82 prevents tipping over the screw 3.

The structure of the arrangement shown in Figure 1 is carried out by placing the cross member 7, 9 parallel to each other (at a suitable distance, so that the subsequently inserted screw clamps get sufficient support); the clamps 3, 5 are inserted with the clamping arms up into the recesses 11; the threaded rods 23 are - depending on the workpiece thickness - screwed corresponding deep into the internal thread of the cross member; the U-rails 23 are attached (i.d.R., lengthwise to the screw clamps) to the threaded rods. This results in a variable tensioning device, which is height-adjustable by means of the threaded rods 23 and serves as a support for workpieces (for example pieces of wood to be glued), which can thus be easily positioned, clamped and glued. In this case (with a suitable design), the U-rails additionally serve as bracing devices in the vertical (in particular for the gluing of real wood). The distances between screw clamps and U-rails are chosen so that they do not interfere with use. The height of the workpieces to be processed (for example, in wooden drawers) is largely limited only by the length of the clamping arms of the clamps used, since the threaded rods can be screwed arbitrarily deep into the cross member.

It is particularly important here that all important and time-critical work processes are carried out before the actual gluing process: the screw clamps are held in the horizontal (without, however, having to be fixed); The contact points of the screw clamps can be adjusted effortlessly and precisely (these settings can be adopted for any number of further pressing operations); Both the workpieces and the allowances are simply placed on the support and finally braced, with fine adjustments are still easily feasible.

7 shows a perspective view of a lower clamping arrangement according to a third embodiment. The same or equivalent elements are provided with the reference numerals already used above and now only the differences from the first embodiment in Fig. 1 are explained in more detail: In the embodiment of Fig. 7, the rails 17 between the clamping arms 13, 15 connected to the cross members 7, 9 via connecting body 84. The connecting bodies 84 each have the groove 11, in which the rails 17 are held displaceably. Optionally, the rails 17 can be mechanically fixed in the groove, for example with a clamping screw, not shown. The connecting body 84 have corresponding receptacles (threaded bore in the illustrated embodiment), which receive the adjustment height adjustable. Furthermore, the connecting body 84 are slidably connected to the cross members 7, 9, so that by moving the connecting body 84 along the cross member a simple adaptation to the width of the clamps 3, 5 to be clamped workpiece, while by displacing the displaceable clamping arms 15 a Adapted to the length of the workpiece. According to the dimensions of the workpiece, the distances of the connecting body can be adjusted to each other, so that the workpiece prior to clamping by the clamps 3, 5 stored in a desired orientation without shaking on the rails 25. As in the above examples, the rail 25 is pivotally mounted at the tips of the threaded bolts so that the workpiece can also be "skewed" before it is clamped. Schief means here that the rails are not aligned parallel to the clamping axis.

Fig. 8 shows a side view of a tensioning arrangement according to a fourth embodiment with adjustable clamping axis. The same or equivalent elements are provided with the reference numerals already used above and now only the differences from the first embodiment in Fig. 1 are explained in more detail: In effect reversal to In the first embodiment, the workpiece is not aligned with the clamping axes of the clamps 3, 5, but the clamping axes of the clamps are aligned relative to a workpiece by means of the height adjustment devices 21. The workpiece rests on cross members 94 (the rear cross member is hidden in the side view) of two gantries 90 (the rear in turn obscured) supported by two feet 92. The cross members 7, 9, which carry the clamps 3, 5, "hang" by means of the height adjustment 21 on the cross members 94. By turning the screws on the threaded bolt 23, the cross member 7, 9 are moved accordingly up and down. Here it is Placed workpiece on the preferably horizontally oriented cross members 94 and prepared for clamping, whereupon the height and possibly the horizontal alignment of the clamps 3, 5 so by means of screws that when clamping by means of the threaded spindle 19, the points of attack of the clamps 3, 5 to the desired locations lie.

Fig. 9 shows a fifth embodiment of a clamping arrangement on a work plate 100 or workbench or multi-functional table. The worksheet 100 has holes 102 in a matrix of predetermined pitch and is part of the clamping arrangement in this embodiment, with the worksheet 100 replacing the cross members 7, 9 of the previous embodiments. The threaded bolts 23 are passed through the holes 102 and their height above the work plate 100 is achieved by turning the knurled nuts 104. The diameter of the knurled nuts 104 is significantly larger than the diameter of the holes 102, so that a vertical orientation of the bolts 23 takes place by resting the knurled nuts 104. The clamps (here only the first clamp 3 is shown by way of example) are aligned by feet 106 standing. Preferably, the feet 106 downwardly projecting pins, so that the feet with the pins in the holes 102 can be inserted.

• Vorzugsweise ist die Länge der Gewindebolzen 23, 48, 76 kürzer als die Spanntiefe der Schraubzwinge 3, 5.
• Die Länge der U-Schienen 25 zum Aufstecken auf die oberen Enden der Gewindestangen zum Stützen des Werksstücks und ggf. der Zulagen ist vorteilhaft die Spannweite der verwendeten Schraubzwingen 3, 5. Vorteilhaft ist die Nutbreite der Durchmesser der verwendeten Gewindestangen, so dass ein leichtes Aufstecken der U-Schienen auf die oberen Enden der Gewindestangen 23, 48, 76 mit ausreichend Halt möglich ist. Letzteres auch, dann wenn die Gewindestangen mit Kunststoffkappen versehen sind). Die U-Schienen sind idealer weise als Kombination aus Metall (U-förmig nach unten offen) sowie Holz als eigentliche Auflage für die Werkstücke ausgelegt.
• Die einzelnen Querträger 7, 9 können (z.B. mittels längerer Gewindestangen und quer eingelassener Bohrlöcher) kraftschlüssig miteinander verbunden werden.
• Auf der U-Schienen-Oberseite kann eine mm-Skala zur leichteren Positionierung angebracht werden.
• Die Gewindestücke können mit Markierungen versehen werden.
• Bei entsprechender Ausführung können auch andere Zwingentypen (z.B. Einhandzwinge, ,unendliche' Zwinge, etc.) verwendet werden.
• Die Schraubzwingen 3 und/oder 5 sind mit Spanngurten kombinierbar, so dass die Flexibilität zusätzlich gesteigert ist.
• Die Nuten 11 bzw. Ausnehmungen an den Querträgern 7, 9 sind (z.B. mittels Fixierschrauben) in der Breite und Tiefe variabel ausgestaltet, so dass auch unterschiedliche Zwingenmodelle gleichzeitig verwendet werden können. Und/oder die Nuten 11 bzw. Ausnehmungen sind zur kraftschlüssigen Fixierung der eingesteckten Spannwerkzeuge ausgestaltet.

Other not yet described aspects or further embodiments or alternatives for individual use or in any combination with the above statements are summarized below:

• Preferably, the length of the threaded bolt 23, 48, 76 is shorter than the clamping depth of the screw 3, 5.
• The length of the U-rails 25 for attachment to the upper ends of the threaded rods for supporting the workpiece and possibly the allowances is advantageously the span of the screw clamps 3, 5 used. Advantageously, the groove width of the diameter of the threaded rods used, so that easy plugging the U-rails on the upper ends of the threaded rods 23, 48, 76 with sufficient support is possible. The latter also, if the threaded rods are provided with plastic caps). The U-rails are ideal as a combination of metal (U-shaped open downwards) and wood designed as the actual support for the workpieces.
• The individual cross members 7, 9 can (for example by means of longer threaded rods and transverse sunken holes) are positively connected to each other.
• A mm scale can be placed on the U-rail top for easier positioning.
• The threaded pieces can be provided with markings.
• With appropriate execution, other types of ferrules (eg single-handed clamp, 'infinite' ferrule, etc.) can be used.
• The clamps 3 and / or 5 can be combined with straps, so that the flexibility is additionally increased.
• The grooves 11 and recesses on the cross members 7, 9 are configured variable (eg by means of fixing screws) in width and depth, so that different ferrule models can be used simultaneously. And / or the grooves 11 and recesses are designed for non-positive fixation of the inserted clamping tools.

• Möbelbau (insbesondere Herstellung von Verbindungen durch Verleimen)
• Herstellung von Echtholzplatten (durch Verleimen einzelner Bretter)
• Bereiche, bei denen Werkstücke fixiert, justiert und verspannt werden müssen (z.B. auch zum Herstellen von Bohrlöchern oder zum Verschrauben von Werkstücken) Verwendung im mobilen Einsatz, da platzsparend transportierbar)

The fields of application for the arrangements are:

• Furniture construction (in particular production of connections by glueing)
• Production of real wood panels (by gluing individual boards)
• Areas in which workpieces must be fixed, adjusted and clamped (eg also for the production of boreholes or for the screwing of workpieces) Use in mobile use, as space-saving transportable)

• universell und flexibel einsetzbar
• auch kleine Werkstücke können problemlos eingespannt werden
• bei einem symmetrischen Aufbau wird ein gegenseitiges Behindern von Spannwerkzeugen und Zulagen vermieden
• die Gesamtgröße der Vorrichtung wird allein durch die Größe und Anzahl der verwendeten Schraubzwingen begrenzt
• die U-Schienen müssen nicht zwangsläufig verwendet werden - somit können auch ,unförmige' Werkstücke direkt auf die oberen Enden der Gewindestangen aufgelegt und eingespannt werden
• Zeitersparnis und Erhöhung der Arbeitseffizienz:
  • einmal eingestellt können sehr effizient beliebig viele weitere Verleimvorgänge für ähnliche Werkstücke durchgeführt werden
  • nur geringe Eigengröße der einzelnen Bestandteile, deswegen platzsparend zu verstauen
  • geringe Herstellungskosten, und damit auch im Heimwerkerbereich ideal einsetzbar

Further advantages of the arrangement are:

• universally and flexibly applicable
• even small workpieces can be easily clamped
• in a symmetrical design mutual obstruction of clamping tools and allowances is avoided
• the overall size of the device is limited solely by the size and number of screw clamps used
• The U-rails do not necessarily have to be used - thus, 'bulky' workpieces can be placed directly on the upper ends of the threaded rods and clamped
• Time savings and increased work efficiency:
  • Once set, any number of additional gluing processes for similar workpieces can be carried out very efficiently
  • Only small size of the individual components, so save space to store
  • low production costs, and thus ideal for use in DIY

LIST OF REFERENCE NUMBERS

1

Clamping arrangement below

3

first screw clamp

5

second screw clamp

7

first cross member

9

second cross member

11

groove

13

fixed clamping arm

15

movable clamping arm

17

rail

19

screw

21

adjustment

23

threaded bolt

24

threaded sleeve

25

U-rail

30

Clamping arrangement above

40

Clamping arrangement below

42nd

first vice rider

43

screw

44

second vice rider

46

connecting rod

48

threaded bolt

50

cap

52

articulation

60

Clamping arrangement above

62

third vice rider

64

foot

66

fourth vice rider

70

Clamping arrangement below / above

72

fifth vice rider

74

platen

76

threaded bolt

78

thumbscrew

80

metal plate

82

footplate

84

connecting body

90

portal frame

92

foot

94

crossbeam

100

Main plate / -bank

102

hole

104

knurled nut

106

foot

Claims (19)

Device for fixing a workpiece with at least two arms (13, 15), between which runs at least one clamping axis for clamping a workpiece, and at least one connecting element (17) holding the at least two arms (13, 15) at a distance from each other,
marked by
at least one adjusting device (21, 42, 44, 62, 66),
with which the position of a workpiece to be clamped is at least perpendicular to the at least one clamping axis variable or
with which the position of the at least one clamping axis is at least perpendicular to a workpiece to be clamped changed (Fig. 8). Arrangement for fixing a workpiece, with
at least two tensioning devices (3, 5), each tensioning device having at least two arms (13, 15), between which runs at least one clamping axle for clamping a workpiece, and at least one connecting element (17) which holds the at least two arms at a distance from each other;
at least one adjusting device (21, 42, 44, 62, 66), with which the position of a workpiece to be clamped at least perpendicular to at least one of the clamping axes is changed or with which the position of the at least one clamping axis is at least perpendicular to a workpiece to be clamped changed (Fig . 8th); and
at least one transverse element (7, 9, 46, 100), via which the at least two tensioning devices (3, 5) are connected or connectable to one another. Arrangement according to claim 2, wherein the at least one adjusting device (21) on the or at least one of the transverse elements (7, 9, 46, 100) is arranged. Arrangement or device according to claim 1, 2 or 3, wherein the at least one adjusting device (42, 44, 62, 66) on the or at least one of the connecting elements (17) is arranged. Arrangement or device according to one of the preceding claims, wherein the at least one adjusting device (21, 42, 44, 62, 66) has a support element (25, 50, 64, 74) for supporting a workpiece, in particular a support element with a support surface which runs parallel to at least one of the Einspannachsen and / or for standing support of the device and / or the arrangement on the workpiece. Arrangement or device according to one of the preceding claims, wherein the at least one adjusting device (21, 42, 44, 62, 66) at least one height adjustment device (23, 48, 78, 80, 23, 104). Arrangement or device according to claim 6, wherein the height adjustment device (23, 48, 78, 80, 23, 104) is or comprises a threaded portion which can be screwed in and out in one thread and / or is a nut running on a threaded portion or comprises , in particular a knurled nut. Arrangement or device according to claim 6 or 7, wherein a support element (25, 50, 64, 74) by at least two height adjustment means (23) is height adjustable. Arrangement or device according to one of the preceding claims, wherein one or more of the adjusting devices (21, 42, 44, 62, 66) displaceable or displaceable on the at least one transverse element (7, 9, 46, 100) and / or on the at least one Connecting element (17) are arranged or can be arranged. Arrangement or device according to claim 9, wherein the cross member (100) is a workbench, a work plate or a workbench, in particular a work plate with a plurality of holes (102) or hole threads. Arrangement or device according to one of the preceding claims, wherein at least one of the adjusting device (21, 42, 44, 62, 66) has a setting scale and / or at least one bearing point (50), in particular at least one elastic material-coated bearing point. Arrangement according to one of the preceding claims 2 to 11, wherein the transverse element (7, 9, 46, 100) or at least one of the transverse elements at least two mutually spaced recesses (11, 102) or fastening elements for inserting or fixing at least one of the clamping devices (3, 5). Arrangement according to claim 12, wherein the fastening elements have a fixing device for releasably securing at least one of the tensioning devices (3, 5). Arrangement according to one of the preceding claims 2 to 13, wherein the transverse element (7, 9, 46, 100) or at least one of the transverse elements comprises an arm (13, 15), at least one connecting element (17) and / or at least one adjusting device (21, 42, 44, 62, 66) of a first clamping device (3, 5) with an arm (13, 15), at least one connecting element (17) and / or at least one adjusting device (21, 42, 44, 62, 66) of a second Clamping device connects. Arrangement according to one of the preceding claims 2 to 14, wherein at least two adjusting devices (21, 42, 44, 62, 66) via at least one transverse element (7, 9, 46, 100) are connected, wherein the at least two clamping devices (3, 5 ) are mounted on the associated adjusting devices. Arrangement according to one of the preceding claims 2 to 15, wherein the one or more transverse elements (7, 9, 46, 100) and / or one or more of the adjusting devices (21, 42, 44, 62, 66) and / or the connecting element or elements (17) has or have at least one stand element (82, 106) for the stationary alignment of the device or the arrangement on a work surface (100). Double arrangement in which at least one device (60, 70) or arrangement (1, 30, 40) according to one of the preceding claims is arranged or can be arranged on a first side of a workpiece and in which at least one device or arrangement according to one of the preceding claims second side of the workpiece is arranged or can be arranged. A double assembly according to claim 17, wherein at least one tensioning axis of the first side tensioning device (60, 70) or assembly (1, 30, 40) is perpendicular to a tensioning axis of the second side tensioning device or assembly. Adjusting means (21, 42, 44, 62, 66) for use with a device (60, 70) and / or an assembly (1, 30, 40) according to any one of the preceding claims.

Images