EP2845663A1 - Bending tool comprising a plurality of tool parts - Google Patents

Abstract

The invention relates to a bending tool (4), which is formed from a plurality of tool elements (39, 40) and these in the working area (41) each have working edges (42). In a working position of the bending tool (4), the tool elements (39, 40) in the region of the working edges (42) at a distance (45) are arranged spaced from each other. Between the tool elements (39, 40) there is arranged at least one tool auxiliary element (46) bridging the spacing (45) in the region of the working edges (42), which with respect to the immediately adjacent working edges (42) has an auxiliary working edge (47) aligned therewith ) having. In a Ausfädelstellung for the workpiece to be manufactured (2) the distance (45) bridging tool support member (46) is removed, wherein the distance (45) between the tool elements (39, 40) in the region of the working edges (42) is reduced. Furthermore, however, the invention also relates to a bending press equipped with such a bending tool (4).

Description

The invention relates to a bending tool, in particular a bending punch, for a bending press and a bending press formed with such a bending tool, as described in claims 1 and 16.

In the previously known bending tools workpieces could be difficult or no longer be threaded out of the so-called horn tools due to their geometry. In such workpieces are mostly box-shaped workpieces with an additional inwardly projecting Innenkantung. Thus, it was only partially or not at all possible to bend such parts or was a high uneconomical Umrüstaufwand necessary to unthread such parts or workpieces from the bending tool can.

A horn tool manufactured by Trumpf has a basic tool connected to the tool holder of the bending press, with which a movable horn connected thereto is adjustably connected. In the bending position or working position, the tool part carrying the horn is supported on the main body in a load-removing manner, in which the Ausfädelstellung the horn-carrying tool part is pivoted by means of the pivot lever in a position relative to the main body. In this position, although the total height of the bending tool, in particular of the punch, is increased in the vertical direction, but the width of the bending tool is at least reduced by the extent of the projecting laterally beyond the main body horn.

The present invention has for its object to provide a bending tool and equipped with such a bending tool bending press, in which after completion of the bending process, the workpiece thus produced can also be removed easily and without high Umrüstaufwand.

This object of the invention is solved by the features of claim 1. The resulting from the features of claim 1 advantage is that in this bending tool over the entire full bending length of the workpiece to be produced corresponding thereto Working or bending edge can be provided on the bending tool, as is achieved in the working position at full working length. By removing at least one tool auxiliary element between immediately juxtaposed tool elements, a free space or a gap can be created which serves the previously available, entire working length or bending length of the bending tool in the maximum case by the extent of the resulting To reduce the gap. As a result, the bending tool can be shortened so far in its longitudinal extent in the direction of the pressing beam, so that even complicated set-up, box-shaped workpieces can be easily manufactured and subsequently also threaded without additional high set-up effort. For this purpose, it is only necessary to release at least one clamping of one of the tool elements on the tool holder or on the pressing beam and to shorten the bending tool by a simple longitudinal displacement in the direction of the pressing beam. If the Ausfädelstellung is reached, the workpiece can be easily removed from the bending press, which in turn must be created by an opposing sliding movement again so much space between the tool elements that the tool accessory can be spent in the space created thereby. Subsequently, the individual components forming the bending tool are brought into abutment against each other at least in the region of their working edges and kept fixed for a renewed bending process via the tool holder on the pressing beam.

Also advantageous is a further embodiment according to claim 2, since a virtually uninterrupted or continuously trained working edge can be created in the region of the bending tool. This creates a perfect bending edge over the entire length of the bending area on the workpiece to be produced.

Also advantageous is an embodiment according to claim 3, since so can be exercised on the tool support element, starting from the pressing bar, a sufficient pressure force up to the auxiliary working edge.

Due to the design according to claim 4, it is possible to carry out the adjustment of the tool support element without additional work or handling effort. Thus, the profitability of the manufacturing plant can be additionally increased. In addition, an automated processing of orders can be carried out, whereby a high degree of automation can be achieved. Furthermore, the adjusting device can also be used to automatically position the tool auxiliary element in at least one of the positions.

According to another embodiment variant according to claim 5, a certain freedom can already be created between the immediately adjacent arranged tool elements by the respective protruding of the two horns on the body. This can subsequently serve for receiving the tool auxiliary element and / or the guide device, in particular its guide body.

Also advantageous is a development according to claim 6, since such a tool auxiliary element can be created with a stably designed base body. In addition, so the auxiliary working edge can be made shorter in its longitudinal extent, which due to the arrangement of additional, additional horns on the tool elements of these, the predominant bending force is applied to the workpiece to be produced.

In the embodiment according to claim 7, it is advantageous that an even better positional fixation of the tool auxiliary element is made possible between the tool elements arranged immediately adjacent to one another. Thus, an even better associated unit can be created by the thus achieved more stable cohesion of the entire bending tool.

Through the development according to claim 8 ensures that in the work area a greater working length can be created and the base body has a lower longitudinal extent in the direction of the auxiliary working edge. Thus, it becomes possible to increase the amount of the receiving space formed between the immediately adjacent tool members and the gap. As a result, a complete removal of the tool support element or the guide device between the basic bodies of the tool elements is not necessarily necessary.

Due to the design according to claim 9, a predetermined adjustment can be determined by the guide with the guide device. Thus, the automated adjustment of the tool accessory can be further facilitated.

Also advantageous is an embodiment according to claim 10, since an independently formed guide unit can thus be created for the tool-assisting element between the immediately adjacent tool elements. This serves for a perfect guidance of the tool auxiliary element between the working position and the Ausfädelstellung.

According to one embodiment, as described in claim 11, so an exact adjustment is provided along the predetermined by the guide elements guide path. Thus, the adjustment can be matched exactly to the respective necessary adjustment movements of the tool support element.

In this case, an embodiment according to claim 12 proves advantageous because in the Ausfädelstellung a compact unit of the Biegewerkezugs can be created. As a result, the available free space can be used completely to accommodate the guide body.

According to an advantageous embodiment according to claim 13, the positioning effort of the tool support element is minimized or completely avoided, at least in the working position. As a result, additional activities otherwise incurred for the exact alignment and adjustment of the tool support element with respect to the tool elements can be avoided. Thus, a faster change between the two positions, namely the Ausfädelstellung and the working position can be achieved.

However, an embodiment according to claim 14 is also advantageous since, in the working position, a fixed positioning of the tool auxiliary element with respect to the immediately adjacent tool elements and their working edges can be achieved. In addition, however, the compressive force transmitted to the tool-assisting element by the pressing beam can also be transmitted better.

According to claim 15 it is achieved that so the support device can be tuned or formed on a variety of operating conditions and the associated adjustment paths.

The object of the invention is, however, independently solved by the features of claim 16. The advantages resulting from the combination of features of this claim are that in this bending tool over the entire full bending length of the workpiece to be produced a corresponding working or bending edge can be provided on the bending tool, as is achieved in the working position at full working length. By removing at least one tool auxiliary element between immediately juxtaposed tool elements, a free space or a gap can be created which serves the previously available, entire working length or bending length of the bending tool in the maximum case by the extent of the resulting To reduce the gap. As a result, the bending tool can be shortened so far in its longitudinal extent in the direction of the pressing beam, so that even complicated set-up, box-shaped workpieces can be easily manufactured and subsequently also threaded without additional high set-up effort. For this purpose, it is only necessary to release at least one clamping of one of the tool elements on the tool holder or on the pressing beam and to shorten the bending tool by a simple longitudinal displacement in the direction of the pressing beam. If the Ausfädelstellung is reached, the workpiece can be easily removed from the bending press, which in turn must be created by an opposing sliding movement again so much space between the tool elements that the tool accessory can be spent in the space created thereby. Subsequently, the individual components forming the bending tool are brought into abutment against each other at least in the area of their working edges and held fixed on the pressing beam for a new bending process via the tool holder.

For a better understanding of the invention, this will be explained in more detail with reference to the following figures.

Fig. 1

eine Biegepresse mit einem durch ein Biegewerkzeug verformten Werkstück, in Ansicht;

Fig. 2

die Biegepresse nach Fig. 1, in Seitenansicht;

Fig. 3

eine mögliche Ausbildung eines Biegewerkzeugs in der Arbeitsstellung, in schaubildlicher Darstellung;

Fig. 4

das Biegewerkzeug nach Fig. 3, in einer Zwischenstellung vor dem Erreichen der Ausfädelstellung;

Fig. 5

das Biegewerkzeug nach den Fig. 3 und 4 in der Ausfädelstellung sowie in schaubildlicher Darstellung;

Fig. 6

das Biegewerkzeug nach den Fig. 3 bis 5 in der Ausfädelstellung, in Seitenansicht;

Fig. 7

eine andere Ausbildung eines Biegewerkzeugs in der Arbeitsstellung, in schaubildlicher Darstellung;

Fig. 8

das Biegewerkzeug nach Fig. 7 in der Ausfädelstellung und in schaubildlicher Darstellung;

Fig. 9

ein Detail des Biegewerkzeugs nach den Fig. 7 und 8, in Ansicht geschnitten;

Fig. 10

eine mögliche Ausbildung einer Stützvorrichtung zwischen dem Werkzeughilfselement und dem Führungskörper, in Ansicht;

Fig. 11

eine andere mögliche Ausbildung der Stützvorrichtung zwischen dem Werkzeughilfselement und dem Führungskörper, in Ansicht.

In each case, in a highly simplified, schematic representation:

Fig. 1

a bending press with a deformed by a bending tool workpiece, in view;

Fig. 2

the bending press after Fig. 1 , in side view;

Fig. 3

a possible design of a bending tool in the working position, in perspective view;

Fig. 4

the bending tool after Fig. 3 , in an intermediate position before reaching the Ausfädelstellung;

Fig. 5

the bending tool after the 3 and 4 in the Ausfädelstellung and in diagrammatic representation;

Fig. 6

the bending tool after the Fig. 3 to 5 in the Ausfädelstellung, in side view;

Fig. 7

another embodiment of a bending tool in the working position, in perspective view;

Fig. 8

the bending tool after Fig. 7 in the Ausfädelstellung and in diagrammatic representation;

Fig. 9

a detail of the bending tool after the FIGS. 7 and 8 cut in view;

Fig. 10

a possible embodiment of a support device between the tool support member and the guide body, in view;

Fig. 11

another possible embodiment of the support device between the tool support member and the guide body, in view.

By way of introduction, it should be noted that in the differently described embodiments, the same parts are provided with the same reference numerals or the same component names, wherein the disclosures contained in the entire description can be mutatis mutandis to the same parts with the same reference numerals or component names. Also, the position information selected in the description, such as top, bottom, side, etc. related to the immediately described and illustrated figure and these position information in a change in position mutatis mutandis to transfer to the new location.

In the Fig. 1 and 2 a manufacturing plant 1 is shown in a highly simplified schematic representation, which is formed in the present case for the bending of sheet metal to be produced from workpieces 2 by means of swaging. But it would also be possible to use a folding machine in the manufacturing plant 1 to carry out the bending process.

The manufacturing plant 1 used for bending in the present case comprises a bending press 3, in particular a press brake or press brake, for producing the workpieces 2 or workpieces between bending tools 4 which are adjustable relative to one another, such as bending dies 5 and bending dies 6.

A machine frame 7 of the bending press 3 consists for example of a bottom plate 8 on the vertically upstanding, spaced from each other and mutually parallel side cheeks 9, 10 are arranged. These are preferably connected to each other by a solid, formed for example from a sheet metal part cross member 11 at their distance from the bottom plate 8 end portions.

The side cheeks 9, 10 are approximately C-shaped to form a free space for the forming of the workpiece 2, wherein a fixed, in particular on the bottom plate 8 upstanding pressing beam 13 is fixed to front end faces 12 of bottom flanges of the side cheeks 9, 10. This stationary arranged and fixed pressing beam 13 may also be referred to as a press table, are arranged on the parts of the bending tool 4 and also held. At front end faces 14 of the leg plate 8 remote leg is in linear guides 15 a to the table beam forming press bar 13 relatively adjustable further pressing bar 16, in particular a pressure bar, guided guided. On opposite, mutually parallel end faces 17, 18 of the two pressing bars 13, 16 tool holders 19, 20 are arranged for assembly with the bending tools 4. The one or more bending tools 4 can also be supported with the interposition of an adapter not shown on the tool holders 19, 20.

The bending press 3 shown has as a drive arrangement 21 for the adjustable pressing beam 16, namely the pressure bar, for example, two powered by electrical energy drive means 22, which conductively connected to a fed from a power grid 23 control device 24 are. By way of example, the operation of the bending press 3 is controlled via a line-connected input terminal 25 connected to the control device 24.

The drive means 22 are preferably motorized spindle drives 26, as they are generally known, of which adjusting means 27 for a reversible actuating movement of the upper beam formed by the pressure bar 16 with this, for example, are drive-connected.

Further details required for the operation of such a bending press 3, such as safety devices, stop arrangements and control devices are omitted in the subject description to avoid unnecessary length of the description.

Furthermore, the manufacturing plant 1 can also be simplified here in the Fig. 2 comprise manipulator 28, which at least a piece thereof removes from a schematically indicated supply stack 29 of sheets to be deformed or abzukantenden and spends in the work area of the bending press 3. The manipulator 28 in turn comprises a gripping tongs 30, shown in a simplified manner, which in turn has gripping fingers 31, 32. The gripping fingers 31, 32 each have clamping surfaces on the side facing the workpiece 2 to be produced. By a corresponding pivoting of the two gripping fingers 31, 32 against each other and applying a sufficient clamping force, the sheet metal or the workpiece 2 to be produced is held by the manipulator 28 and moved accordingly as well as positioned on the interaction of the clamping surfaces. With the gripper fingers 31, 32 of the gripping tongs 30 is a corresponding gripping and later ensured due to the clamping movement sufficient support for the workpiece to be produced from the sheet 2.

Furthermore, it is shown here in simplified form that the two pressing bars 13, 16, in particular their tool holders 19, 20, or the bending tool 4 held thereon with its bending punch 5 and bending die 6, when viewed in the longitudinal direction of the pressing bars 13, 16 a between them define extending work plane 33. The working plane 33 preferably runs centrally with respect to the press beams 13, 16 or the tool holders 19, 20 arranged on them. In the present exemplary embodiment, a vertically aligned plane is understood here, in which also a plane defined by the bending tool 4 Bending region 34 is arranged or formed. Bending area 34 is understood to be that area which serves to form the workpiece 2 to be produced from the sheet metal which is still mostly undeformed, or to further process an already pre-formed workpiece 2, by forming at least one additional bending area 34. It should also be mentioned that the cross-sectional shape of the bending punch 5 and / or the bending die 6 is chosen only as an example for a multiplicity of possible cross-sectional shapes, wherein this can be freely selected by the spatial shape of the workpiece 2 to be produced. Furthermore, the bending punch 5 and / or the bending die 6 can each also be formed from a plurality of individual components.

The bending region 34 lies mostly in the working plane 33 and is formed or defined by the cooperating components of the bending tool 4, namely the bending punch 5 and the bending die 6. The bending region 34 usually forms a preferably rectilinear bending line on the workpiece 2 to be produced, wherein on both sides of each of these legs 35, 36 form due to the bending process carried out. Depending on the desired or produced geometry of the workpiece 2, the two legs 35, 36 between them enter a bending angle 37 a. This bending angle 37 is measured in a reference plane 38 aligned perpendicular to the bending line, as in both Fig. 1 and 2 is indicated. The reference plane 38, for its part, is furthermore preferably also aligned with respect to the working plane 33 in the vertical direction.

The bending tool 4, in particular the bending punch 5, in the present exemplary embodiment comprises at least one first tool element 39 and at least one second tool element 40. The tool elements 39, 40 forming the bending tool 4 are arranged one behind the other as seen in the longitudinal direction of the bending region 34. Furthermore, the bending tool 4, in particular the tool elements 39, 40 forming the bending tool 4, respectively have working areas 41 which are realized by working edges 42 formed in the working plane 33 described above.

The tool elements 39, 40 shown here for forming the bending tool 4, in particular the bending punch 5, each comprise a generally designated as the main body 43 component which can be fastened in a known manner with the tool holders 19, 20 on the pressing bars 13, 16. At least one of the tool elements 39, 40 is in its working area 41 with a projecting in the longitudinal direction of the working edge 42 with respect to its base 43 on the side facing away from the other tool element 40, 39 side beyond projecting horn 44 and provided therewith.

The horns 44 serve to be able to produce a continuous bending edge in the case of workpieces 2 formed in the form of boxes, up to the corner regions of the workpiece 2 arranged at a distance from each other. In order to achieve a continuous bending on the workpiece 2 over the entire bending length to be produced, the working edges 42 formed on the tool elements 39, 40 should also be designed to run continuously without interruption, at least in the working position of the bending tool 4. In order for the bending tool 4 in its working area 41 even in a series arrangement of several tool elements 39, 40 in the direction of the bending region 34 should be performed almost continuously. Even with a formation of the bending tool 4 from a plurality of tool elements 39, 40, the individual working edges 42 are to be formed almost continuously without interruption, except for the region of the joint of adjoining tool elements 39, 40.

As is generally known, the bending tool 4, in particular the bending punch 5 and / or the bending die 6 or the tool elements 39, 40 forming the latter are longitudinally displaceably fastened or fastened to the respective pressing beam 13, 16 and fixedly clamped there at least during the execution of the bending operation ,

Like from the Fig. 3 to 9 can be seen, here are the sake of clarity, only the bending tool 4, in particular the bending punch 5 forming tool elements 39, 40 shown in an enlarged scale and has been dispensed with the detailed representation of system parts of the bending press 3.

A first possible and possibly independent training of the bending tool 4, in particular the bending punch 5, is in the Fig. 3 to 6 shown. So is best from the Fig. 3 can be seen that in the working position of the bending tool 4, the first tool element 39 and the at least second tool element 40 in the region of the working edges 42 in the longitudinal direction thereof are spaced apart at a distance 45 from each other. Furthermore, there is still a distance 45 between the tool elements 39, 40 arranged at least in the region of the working edges 42 bridging tool 46. This tool auxiliary element 46 in turn has an auxiliary working edge 47 in the working area 41. This is in relation to the immediately adjacent arranged extending working edges 42 of the tool elements 39, 40 in alignment with it in the working position tool support member 46 aligned thereto.

Thus, in the working position not only in the region of the working edges 42 of the tool elements 39, 40 but also in the area of the auxiliary working edge 47 of the tool 46, a perfect, almost uninterrupted continuous bending edge formed on the workpiece 2 to be formed. Thus, the bending tool 4 forms in its working area 41 a continuous associated unit.

In a box-shaped workpiece 2, which may also have a mostly parallel to the floor extending inwardly projecting wall portion in the open, upper end, the threading out of such a workpiece 2 from the bending tool 4 is a potential problem. With appropriate design of the workpiece. 2 For example, the unthreading could possibly be achieved by arranging the box-like workpiece 2 obliquely or diagonally with respect to the working edges 42 after the bending operation has taken place, thus enabling the threading out of the bending tool 4.

In many cases, however, this is not possible, in which case the at least two tool elements 39, 40 are brought into a so-called unloading position for the workpiece 2 to be produced. In this Ausfädelstellung the distance 45 in the working edges 42 bridging tool support 46 is at least partially removed, whereupon then the distance 45 between the first tool element 39 and the at least second tool element 40 in the range of the working edges 42 is reduced. An intermediate position is in the Fig. 4 shown, wherein in the Fig. 5 the tool-assisting element 46 has been completely removed and the two tool elements 39, 40 have been displaced relative to one another at least in the region of their working edges 42 so far that the two tool elements 39, 40 abut one another. By this removal and the associated shortening or complete elimination of the distance 45, the total length of the tool elements 39, 40 of the bending tool 4 in the region of the working edges 42 is shortened to a maximum length, which the longitudinal extent of Auxiliary working edge 47 corresponds. It would also be possible that the bending tool 4 in its shortened Ausfädelstellung can also be used for a further bending operation with a shortened bending length or a shortened bending region 34.

Preferably, in the working position in the working area 41 of the first tool element 39 and the at least second tool element 40 and the tool support 46, the working edges 42 and the auxiliary working edge 47 are arranged directly one behind the other. Thus, the two tool elements 39, 40 are located without gaps on both sides of the tool support element 46 in the working position, at least in the region of the working edges 42 at it. Thus, in the working position over the entire bending edge or bending line to be produced on the workpiece 2, these are formed continuously or without interruption.

As already described above, the tool elements 39, 40 are mostly held longitudinally displaceably on or in the tool receivers 19, 20 and are held there and clamped there by means of known clamping devices, at least for the bending operation. In order to be able to remove the tool auxiliary element 46 from the working area 41 in order to achieve the Ausfädelstellung, this is preferably supported in the working position on the respective pressing beam of the bending press 3.

To carry out this adjusting movement, the tool-assisting element 46 can be connected or coupled to an adjusting device 48, by means of which the tool-assisting element 46 can be adjusted from its working position into the unwinding position for the workpiece 2 to be produced. The term Ausfädelstellung the shortened and collapsed position of the tool elements 39, 40 understood, in which the tool support member 46 is removed with its auxiliary working edge 47 between the working edges 42.

An adjustment device 48 indicated in a simplified manner is arranged on the rear side of the bending press 3, that is to say on that side of the bending press 3 which is averted by an operator, in particular its pressing bars 13, 16. In dashed lines an intermediate position of the tool 46 is indicated.

Furthermore, corresponding guide devices can additionally be provided, wherein the adjusting movement of the adjusting device 48 is indicated only in a simplified manner by arrows. This adjusting device 48 can also be referred to as Ausfädelvorrichtung, which is arranged behind the press bar 13, 16. The adjustment of the adjustment 48 can be done for example by means of a folding operation but also by pushing and / or pivoting and / or turning the tool 46. Furthermore, it is possible to fasten the adjusting device 48 directly to one of the pressing bars 13, 16. The adjusting device 48 thus performs the displacement of the tool support 46 between the working position and the Ausfädelstellung. In this way, an automated positioning of the tool auxiliary element 46 in at least one of the two positions relative to the press beam 13, 16 or of the bending tool 4 can also take place. Thus, the tool auxiliary element 46 can be spent to form the bending tool 4 between the spaced apart in the direction of the press bar 13, 16 arranged tool elements 39, 40 and optionally held there in a predefined position or position. Subsequently, at least one of the tool elements 39, 40 can be adjusted in the longitudinal direction with respect to the press beam 13, 16 in order to achieve a mutual contact of the tool support element 46 on the two adjacent tool elements 39, 40.

As a result of the complete removal of the tool auxiliary element 46, the remaining tool elements 39, 40 can then be moved toward one another by the gap created between them. Subsequent to the shortening of the working length of the bending tool 4, the workpiece 2 produced can be easily removed without retooling.

Furthermore, it is possible for the first tool element 39 and the at least second tool element 40 to each have a further horn 44 projecting beyond the end face of the main body 43 onto the side facing the other tool element 40, 39 in their working areas 41 on mutually facing end sides 49 , In the present embodiment, both tool elements 39, 40 each have the horns 44 in their end regions. Such trained tool elements 39, 40 may also be referred to as so-called horn tools. Due to the protrusion of the successive, further horns 44 in the region of the mutually facing end faces 49 is shown in the illustrated here Tool elements 39, 40 already formed a free space between the two base bodies 43 in the working position of the tool elements 39, 40 and thus a gap between them in this area.

Furthermore, in the Fig. 3 In a simplified manner, it may be advantageous if, in the working position, the tool-assisting element 46 is held locked on at least one of the immediately adjacent tool elements 39, 40. This arrested holder of the tool auxiliary element 46 serves to keep it stationary during the bending operation relative to at least one of the directly adjacently arranged tool elements 39, 40. This makes it possible to perform a perfect bending operation of the workpiece 2 to be produced, even with the tool-assisting element 46 together with the tool elements 39, 40. Thus, not only a mutual positioning of the tool support member 46 with respect to the adjacent tool elements 39, 40 to take place, but it can also be a power transmission from the press bar 13, 16 carried out on the entire bending tool.

In the Fig. 3 are exemplified on both sides of the tool support member 46 respectively simplified locking elements 50, 51 indicated. In the formation of the one or more locking elements 50, 51 can either an independent component, such as pins with cooperating pin receptacles are selected, or even at the mutually facing end faces 49 of the base body 43 and the respective adjoining side surfaces of the tool support 46 counterparts trained or ., arranged projections and / or depressions are provided. But it would also be a multiple arrangement of locking elements 50, 51 possible. This can not only pre-positioning of the tool auxiliary 46 in the course of the assembly of the bending tool 4, in particular the punch 5, take place, but in the working position also a holder or fixation on at least one of the immediately adjacent tool elements 39, 40 can be achieved.

Furthermore is from the Fig. 3 It can still be seen that, in the working position, the tool-assisting element 46 abuts both the mutually facing end faces 49 of the base body 43 of the tool elements 39, 40 and the horns 44 protruding beyond the main body 43.

As already described above, the tool elements 39, 40 are received in one of the tool holders 19, 20 and held therein longitudinally displaceable and, if necessary, clamped. For this purpose, a guide rail 52 can be provided or arranged on the tool element 39, 40. Due to the arrangement or design of the mutually facing horns 44, it is possible that the respective guide rail 52 has a longitudinal extent, which corresponds to a length of the respective working edge 42 of the tool elements 39, 40. Thus, the guide rail 52 projects beyond the base body 43 of the tool elements 39, 40 in its longitudinal extent. This makes it possible that the tool-assisting element 46 is supported in the working position with the interposition of the guide strip or guide rails 52 on the pressing beam 13, 16 of the bending press 3.

The tool elements 39, 40 are each independent components and may comprise the main body 43 and at least one, preferably two, fixedly connected horns 44, which are connected together and rigidly connected to the pressing beam 13, 16 or held thereto.

However, it would also be possible regardless of the arrangement of the other horns 44 on the mutually facing end faces 49 of the tool elements 39, 40 to dispense. In this case, the tool auxiliary 46 may be formed with a same continuous longitudinal extent in the direction of its auxiliary working edge 47.

In the Fig. 7 to 9 is a further and possibly independent embodiment of the bending tool 4 is shown, again for like parts, the same reference numerals or component names as in the preceding Fig. 1 to 6 be used. In order to avoid unnecessary repetition, the detailed description in the previous ones will be used Fig. 1 to 6 referred or referred.

In this further possible embodiment shown here, the tool-assisting element 46 comprises the base body 53 and, in its working area 41, auxiliary horns 54 projecting beyond the base body 53 in the direction of the auxiliary working edge 47. These two auxiliary horns 54 lie in the working position on the respectively immediately adjacent, further horns 44 of the immediately adjacent tool elements 39, 40 at. The tool auxiliary element 46 is in turn in a separate guide device 55 relative to the Tool elements 39, 40 out. For this purpose, the guide device 55 has a guide 56. This guide 56 is aligned approximately in a parallel direction with respect to the working plane 33 and in approximately vertical direction with respect to the auxiliary working edge 47. This can be done in the present case, an approximately vertical adjustment or adjustment of the tool support 46.

The orientation of the guide 56 or guideway does not necessarily have to be rectilinear, but it can also be an adjustment in the vertical direction with respect to the working plane 33 in addition to done. Thus, for example, during the adjustment of an exemption of the auxiliary working edge 47 can be achieved.

In the present exemplary embodiment, the guide device 55 has a guide body 57 which, in the direction of the auxiliary working edge 47, has legs 58 arranged at a distance from one another, which extend on both sides of the base body 53. Furthermore, the guide body 57 also includes a connecting web 59 connecting the two legs 58 on the side away from the auxiliary working edge 47. Thus, a one-piece component is created as a guide body 57, which is arranged here between the previously described end faces 49 of the tool elements 39, 40.

In contrast to the previously described embodiment, the guide body 57 can be arranged by the additional provision of the auxiliary horns 54 on the tool support member 46 both in the working position and in the Ausfädelstellung between the two tool elements 39, 40.

Furthermore, the guide device 55 comprises between the base body 53 of the tool support member 46 and at least one of the two legs 58 cooperating guide elements 60, 61. The guide elements 60, 61 may be, for example, pin-like or web-like projections as well as guideways trained, in which engages the pin or web. This may also be sliding and / or roller guides in a known embodiment.

To the guide body 57 with the two legs 58 and the connecting web 59 connecting them between the facing end faces 49 of the tool elements 39, 40 in the Ausfädelstellung be able to record between them, is preferably a sum of lengths 62 of the two mutually facing, further horns 44 of the tool elements 39, 40 in the direction of the working edges 42 at least one outer dimension 63 of the two in the direction of the auxiliary working edge 47 distanced from each other arranged legs 58 to choose. The connecting web 59 is preferably to be selected with the same longitudinal extent in the same direction. This makes it possible, as in the Fig. 8 can be seen, even in the shortened Ausfädelstellung of the bending tool 4, the workpiece to be produced 2 easy to unthread. The tool auxiliary element 46 is made of in the Fig. 7 shown employment in the in Fig. 8 shifted to shortened Ausfädelstellung shifted.

How better of the Fig. 9 can be seen, 57 cooperating stop members 64, 65 may be provided between the base body 53 of the tool support member 46 and at least one of the legs 58 of the guide body 57. These stop elements 64, 65 serve to limit the adjustment path of the tool auxiliary element 46 to be performed relative to the guide body 57. Thus, these stop elements 64, 65 may be formed or aligned with each other so that they define the aligned alignment of the working edge 42 and the auxiliary working edge 47 when the working position of the tool elements 39, 40 and the tool support 46.

However, it would also be possible, for example, for the stop elements 64, 65 to be formed by the previously described guide elements 60, 61 of the guide 56. Furthermore, it would also be conceivable to provide a plurality of guide elements 60, 61 and / or a plurality of stop elements 64, 65 so as to achieve an exact, pivot-free guidance and / or end position of the tool support element 46 relative to the guide body 57. In addition, the guide elements 60, 61 and / or the stop elements 64, 65 also serve to define a defined end position of and associated therewith the mutually aligned alignment of the working edges 42 and the auxiliary working edge 47.

In the previously in Fig. 3 to 6 described bending tool 4, the support of the tool support member 46 was carried out directly, optionally with the interposition of the guide rail 52, on the tool holder 19, 20. In this embodiment, however, is based the guide body 57, optionally with the interposition of the guide rail 52, on the tool holder 19, 20 from.

In the Fig. 10 is a further and possibly independent embodiment of the bending tool 4 is shown, again for like parts, the same reference numerals or component names as in the preceding Fig. 1 to 9 be used. In order to avoid unnecessary repetition, the detailed description in the previous ones will be used Fig. 1 to 9 referred or referred.

For adjusting and supporting the tool auxiliary 46 in the working position is provided here that between the base body 53 of the tool support member 46 and the connecting web 59 of the guide body 57, a support device 66 is arranged. This makes it possible to position the tool-assisting element 46 in its working position relative to the guide body 57 in the adjustment direction along the guide 56. The supporting device 66 serves to hold the tool-assisting element 46 at least in its working position, relative to the immediately adjacent tool elements 39, 40, to fix it in a stationary manner or to fix it. In order to adjust the tool-assisting element 46, an adjustment device 48 (not shown here) may in turn serve, which may be provided in addition to the support device 66.

In order to be able to carry out the adjustment movement of the tool auxiliary element 46 from its working position into the Ausfädelstellung for the bending tool 4, in the present embodiment, the effect of the support device 66 between the base body 53 and the connecting web 59 of the guide body 57 to lift first and then carry out the adjustment process.

In the present embodiment, the support device 66 comprises at least one support element 67, which is designed for example as an eccentric lever. Due to the different length formation in the longitudinal and transverse directions, for example, the working position of the tool support element 46 can be defined in the illustrated position of the support element 67. As indicated in accordance with the arrows, the position of the support member 67 of the support device 66 can be changed by turning or pivoting such that the supporting action for the tool support member 46 is repealed and thus the tool support member 46 can be moved from its working position in the Ausfädelstellung. This can be done by the adjusting device 48, which, however, has not been shown here for the sake of clarity. Furthermore, however, corresponding guide elements 60, 61 and / or stop elements 64, 65 can again be provided here, as has already been described in detail above. For clarity, the presentation of these elements described above is also omitted.

In the Fig. 11 is a further and possibly independent embodiment of the bending tool 4 is shown, again for like parts, the same reference numerals or component names as in the preceding Fig. 1 to 10 be used. In order to avoid unnecessary repetition, the detailed description in the previous ones will be used Fig. 1 to 10 referred or referred.

This embodiment shown here is designed similar to that previously in the Fig. 10 has been described. In contrast to the previously described embodiment, the support device 66 here comprises a plurality of support elements 67, which are formed, for example, by pivotable levers. These may be held, for example, on the connecting web 59 and / or on the legs 58 of the guide body 57 or be mounted thereon.

Again, indicated by arrows that the support effect of the support members 67 is first set aside in the working position tool assist 46 to then perform the adjustment or displacement of the tool 46 from its working position in the Ausfädelstellung the bending tool 4.

The support member 67 may also be formed by an adjusting spindle, rack or the like.

The embodiments show possible embodiments of the bending tool 4 and the bending press 3, it being noted at this point that the invention is not limited to the specifically illustrated embodiments thereof, but also various combinations of the individual embodiments are mutually possible and this variation possibility due to the teaching to technical action by objective invention in the skill of those working in this technical field expert. Furthermore, individual features or combinations of features from the different exemplary embodiments shown and described can also represent independent, inventive or inventive solutions.

The task underlying the independent inventive solutions can be taken from the description.

All statements of value ranges in the present description should be understood to include any and all sub-ranges thereof, e.g. is the statement 1 to 10 to be understood that all sub-areas, starting from the lower limit 1 and the upper limit 10 are included, ie. all sub-areas begin with a lower limit of 1 or greater and end at an upper limit of 10 or less, e.g. 1 to 1.7, or 3.2 to 8.1, or 5.5 to 10.

Above all, the individual in the Fig. 1 . 2 ; 3, 4 . 5, 6 ; 7, 8 . 9; 10; 11 shown embodiments form the subject of independent solutions according to the invention. The relevant objects and solutions according to the invention can be found in the detailed descriptions of these figures.

For the sake of order, it should finally be pointed out that for a better understanding of the construction of the bending press 3 and of the bending tool 4, these or their components were shown partially unevenly and / or enlarged and / or reduced in size. <B> Reference Numbers </ b> 1 manufacturing plant 31 gripping fingers 2 workpiece 32 gripping fingers 3 bending press 33 working level 4 bending tool 34 bending area 5 punch 35 leg 6 bending die 36 leg 7 machine frame 37 bending angle 8th baseplate 38 reference plane 9 side cheek 39 first tool element 10 side cheek 40 second tool element 11 cross-dressing 41 Workspace 12 Front end face 42 working edge 13 pressing bars 43 body 14 Front end face 44 horn 15 linear guide 45 distance 16 pressing bars 46 Tool auxiliary member 17 face 47 Auxiliary working edge 18 face 48 adjustment 19 tool holder 49 front 20 tool holder 50 locking 21 drive arrangement 51 locking 22 drive means 52 guide rail 23 energy grid 53 base body 24 control device 54 auxiliary Horn 25 input terminal 55 guiding device 26 spindle drive 56 guide 27 actuating means 57 guide body 28 manipulator 58 leg 29 stockpile 59 connecting web 30 tongs 60 guide element 61 guide element 62 length 63 external dimension 64 stop element 65 stop element 66 support device 67 support element

Claims (16)

Bending tool (4), in particular bending punch (5), for a bending press (3) with pressing beam (13, 16), in particular press brake, for bending of workpieces to be produced from sheet metal (2) along a bending region (34), which bending tool (4 ) is formed from a first tool element (39) and at least one second tool element (40) and the tool elements (39, 40) are arranged one behind the other in the longitudinal direction of the bending region (34), wherein these in their working region (41) each in a working plane ( 33) having at least one of the tool elements (39, 40) in its working area (41) with a longitudinal direction of the working edge (42) with respect to its base body (43) on the other tool element (40, 39 ) turned off side beyond projecting horn (44) is formed, and the tool elements (39, 40) on the pressing beam (13, 16) are longitudinally displaceable fastened, characterized in that in one Working position of the bending tool (4) the first tool element (39) and the at least second tool element (40) in the region of the working edges (42) in the longitudinal direction thereof at a distance (45) are spaced from each other and that between the tool elements (39, 40 ) at least one the distance (45) at least in the region of the working edges (42) bridging tool auxiliary element (46) is arranged, which with respect to the directly adjacent thereto arranged working edges (42) of the tool elements (39, 40) aligned therewith extending auxiliary working edge ( 47), wherein in a Ausfädelstellung for the workpiece to be manufactured (2) the distance (45) in the region of the working edges (42) bridging tool support member (46) is removed and the distance (45) between the first tool element (39) and the at least second tool element (40) in the region of the working edges (42) is reduced. Bending tool (4) according to claim 1, characterized in that in the working position in the working area (41) of the first tool element (39) and the at least second tool element (40) and the tool auxiliary element (46) the working edges (42) and the auxiliary working edge (47 ) are arranged directly behind one another. Bending tool (4) according to claim 1 or 2, characterized in that in the working position the tool support element (46) optionally with interposition of a tool element (39, 40) arranged guide bar (52) on one of the pressing bars (13, 16) of the bending press ( 3) can be supported. Bending tool (4) according to one of the preceding claims, characterized in that the tool-assisting element (46) is connected to an adjusting device (48), by means of which the tool-assisting element (46) can be adjusted from its working position to the unfolding position for the workpiece (2) to be produced is. Bending tool (4) according to one of the preceding claims, characterized in that the first tool element (39) and the at least second tool element (40) in their working areas (41) on mutually facing end faces (49) in each case another over the end face (49). the base body (43) on the side facing the other tool element (40, 39) side projecting horn (44). Bending tool (4) according to claim 5, characterized in that in the working position the tool auxiliary element (46) both on the mutually facing end faces (49) of the base body (43) of the tool elements (39, 40) as well as on the base body (43 ) outwardly projecting horns (44). Bending tool (4) according to one of the preceding claims, characterized in that in the working position, the tool-assisting element (46) is held locked on at least one of the immediately adjacent tool elements (39, 40) by cooperating locking elements (50, 51). Bending tool (4) according to one of the preceding claims, characterized in that the tool auxiliary element (46) has a base body (53) and in the working area (41) on both sides over the base body (53) in the direction of the auxiliary working edge (47) projecting auxiliary horns (54) , Bending tool (4) according to claim 8, characterized in that the base body (53) of the tool auxiliary element (46) in an approximately parallel direction with respect to the Working level (33) and in approximately vertical direction with respect to the auxiliary working edge (47) aligned guide (56) of a guide device (55) is guided. Bending tool (4) according to claim 9, characterized in that the guide device (55) comprises a guide body (57) with in the direction of the auxiliary working edge (47) spaced from one another arranged legs (58) which extend on both sides of the base body (53), and the two legs (58) are connected to one another on the side away from the auxiliary working edge (47) via a connecting web (59). Bending tool (4) according to one of claims 8 to 10, characterized in that between the base body (53) and at least one of the two legs (58) cooperating guide elements (60, 61) are provided. Bending tool (4) according to one of claims 5 to 11, characterized in that a sum of lengths (62) of the two mutually facing horns (44) of the tool elements (39, 40) in the direction of the working edges (42) at least one outer dimension (63 ) of the two in the direction of the auxiliary working edge (47) spaced from each other arranged legs (58). Bending tool (4) according to any one of claims 8 to 12, characterized in that between the base body (53) of the tool support member (46) and at least one of the legs (58) of the guide body (57) cooperating stop elements (64, 65) are provided, which on reaching the working position of the tool elements (39, 40) and the tool auxiliary element (46) determine the mutually aligned alignment of the working edges (42) and the auxiliary working edge (47). Bending tool (4) according to any one of claims 8 to 13, characterized in that between the base body (53) of the tool support member (46) and the connecting web (59) of the guide body (57) a support device (66) is arranged, which the tool auxiliary element ( 46) in its working position relative to the guide body (57) in the adjustment direction along the guide (56) keeps positioned. Bending tool (4) according to claim 14, characterized in that the supporting device (66) comprises at least one support element (67) which is selected from the group of eccentric lever, pivoting lever, adjusting spindle, rack. Bending press (3), in particular press brake, for the folding of workpieces to be produced from sheet metal (2), with press beams (13, 16) on which a bending tool (4), in particular bending punch (5) and bending die (6), comprising several Tool elements (39, 40) is held, characterized in that the bending tool (4), in particular the bending punch (5), according to one of claims 1 to 15 is formed.

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