奥地利专利AT514821A1 Bending press and bending process

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专利摘要:
The invention relates to a bending press (18) for forming a workpiece (1) comprising a first clamping bar (27) having a first clamping jaw (2) with a first forming edge (5) and an adjustable second clamping bar (28). , which has a second clamping jaw (3) with a second forming edge (6), and at least one along a bending beam guide (33) relative to the machine frame (19) adjustable bending beam (7, 38) with at least one bending edge (8, 39) whose Movement path (12) at a distance (10) on the Umformkanten (5, 6) passes and with which a portion (4) of the workpiece (1) relative to the clamped between the jaws (2, 3) part of the workpiece ( 1) can be angled. The bending beam guide (33) is designed as a linear guide (34) and generates a rectilinear trajectory (12) of the bending edge (8, 39) and the forming edges (5, 6) of both clamping jaws (2, 3) by means of a transverse guide (40). and an adjusting drive (41) to the movement path (12) of the bending edge (8) are approximated.
公开号:AT514821A1
申请号:T50645/2013
申请日:2013-10-04
公开日:2015-04-15
发明作者:
申请人:Trumpf Maschinen Austria Gmbh；
IPC主号:

专利说明:

The invention relates to a bending press according to the preamble of claim 1 and a method for forming a workpiece according to the preamble of Anspru¬ches 13th
The so-called swivel bending and swivel bending presses used for this purpose have been in use for a long time, in particular in the production of Blechge¬häusen or sheet metal profiles they are long known prior art.
An important factor in this case is that it is possible to carry out forming angles of more than 90 ° on the workpiece so that bending angles of at least 90 ° can be achieved even after an unavoidable springback of a workpiece occurring during unloading.
This requires that a bending edge attached to the bending cheek of a swing bending press be moved in a first step at a distance past clamping jaws or retainers which pass the workpiece and then in a second step is moved transversely in the direction of the blank holders, at the workpiece a forming angle greater than 90 ° cause. Since this is not possible with simple straight guidance of the bending beam, pivoting bending machines have complicated and complicated guides and drive in order to carry out such combined movements of the bending cheek. This complexity of the bending-cheek drive also often brings restrictions on the possible bending lengths and the work piece thickness that can be machined.
The object of the invention is to provide a bending press that has the advantages of the known swivel bending method, but a simple one
Structure and has the said limitations only to a lesser extent.
The object of the invention is achieved by a generic bending press, in which the bending beam guide is designed as a linear guide and causes a geradli¬nige trajectory of the bending edge and Umformkanten both jaws are adjustable by means of a transverse guide of the clamping bar and a Verstellan¬ drive along an adjustment, the itself approximates to the movement path of the bending edge. This relative movement of the clamping bar transversely to the movement path of the bending beam can take place at right angles or obliquely to the Be¬wegungsbahn of the bending beam. In such a bending press, the complicated movement of the bending cheek of a pivoting bending press relative to the stationary jaws holding the workpiece is replaced by a combination of simple movements of the bending beam and the jaws.
The fact that the workpiece must be moved along with the jaws in this case, as a disadvantage much less significant than the advantages thereby achieved. The transverse guidance of the jaws or the latter carrying clamping bars can be structurally very simple, as well as the straight guide of Biegebal¬kens ,
The straight guide of the bending beam is preferably oriented in the vertical direction, but embodiments are also possible in which the Gerad¬führung obliquely to the vertical direction oralso horizontal.
The guidance of the clamping bar does not necessarily have to be rectilinear, but it can also bring about a movement in the form of a curve which approximates the straight-line path of movement of the bending bar. For example, movement of the clamping bars may occur along a part of a circular path.
An embodiment with little additional effort for the parallel adjustability of the two clamping bars is achieved if the transverse guide comprises the clamping bar guide of the second clamping bar and a clamping bar guide of the first clamping bar which is structurally separate therefrom, wherein the adjusting paths of the clamping bars run parallel to one another. Since a clamping bar guide and a clamping bar drive is required anyway for carrying out the clamping operation, this can also be advantageously used in this specific embodiment for the purposes of transverse guidance. The clamping bar guide of the first clamping bar can be constructed structurally the same as the clamping bar guide of the second clamping bar.
An embodiment which requires only slight adjustment forces for the transverse adjustment is achieved if the clamping beam guides are designed as parallel wheel guides and extend at a helix angle, in particular between 10 ° and 30 °, to the bending beam guide. Neglecting Reibungseinflüssen results in a helix angle of 30 ° gegeber the adjustment force in the direction of the jaw guide a double-sized component force for the transverse adjustment.
An alternative design of the bending press is that the transverse guide of the clamping bar runs approximately at right angles to the bending beam guide. As a result, there is a clear separation between the clamping bar guide and the clamping bar drive on the one hand and the transverse guide with the adjusting drive on the other hand. The respective guides and drives can thereby be designed optimized for the respective requirement. The transverse guide and the adjusting drive, in contrast to the clamping bar, require only a small working distance, which is why different solutions can be chosen for this, such as, for example, Linear guides, eccentric guides, etc.
A stable synchronization of the movement of the two clamping bars is achieved when the clamping bar guides are arranged on a clamping bar frame which is adjustable relative to the machine frame by means of the transverse guide and Ver¬stellantriebes transversely, ie at right angles or obliquely to the trajectory of Bie¬ge. Any differences in the movements of the clamping bar through two separate drives acting on the clamping bar frame can thereby be avoided if a single central adjusting drive is provided for adjusting the clamping bar frame.
A mounting-friendly embodiment of a bending press is achieved when the bending beam guide on a first frame part, in particular O-frame, and the clamping bar guide and the transverse guide on a second-spaced-apart frame part, in particular O-frame, are arranged. The two O-frames are connected by suitable side stands.
A slim and material-saving embodiment of a bending press is given, when the bending beam guide and the clamping jaw guide and the Querführung are arranged on opposite outer sides of a central frame part, in particular an O-frame. The power flow between the bending beam and the clamping bar takes place in this case over a short distance directly over the central frame part.
In order to be able to perform both positive bends and negative bends in an opposite direction without turning the workpiece, it is advantageous if two oppositely adjustable bending beams are arranged on the machine frame for bending in opposite directions.
Since in each case only one bending beam is used, it is also possible that two mutually distanced and oppositely oriented bending beam on a common beam frame, in particular O-frame, are arranged and this is rectilinearly adjustable by means of the bending beam guide. The common beam frame has a high deformation rigidity and can be guided very precisely, which also gives increased bending accuracy.
To facilitate adaptation of the bending parameters to the respective bending task, in particular to the thickness of a workpiece, it is advantageous if a Hori¬zontalabstand between the clamping bar and bending beam is adjustable. In particular, with thick workpieces, the bending operation can be carried out at an increased distance and thus with a longer lever arm, e.g. at least three times the Ma¬terialdicke of the workpiece to be initiated, whereby the bending drive can ge¬ be spared or can be made smaller.
The flexibility of use of a press brake is substantially increased when the forming edges on the jaws and / or the bending edge on the bending beam are assembled from tool segments in the form of bending tools and clamping tools, thereby easily realizing different lengths of the bending edge or forming edges. Required setup operations can be carried out e.g. also carried out automatically with spindles for tool movement.
In order to easily feed large workpieces to the bending press and to be able to easily remove bent workpieces from the bending press, it is advantageous if a free passage opening for a workpiece is formed in the machine frame between the clamping bar and the bending bar or beams. As a result, it is possible, as it were, to make a continuous pass, since workpieces do not have to be removed again on the feed side.
The object of the invention is further achieved by a method for forming a workpiece in which it is clamped between a first clamping jaw with a first forming edge and a second clamping jaw with a second forming edge so that a section protrudes between the forming edges and then a Bending edge of an adjustable bending beam is guided past at a distance to the Umformkanten, whereby the Teilab- section is angled relative to the clamped between the jaws part of the Werk¬stücks. According to the invention, the bending edge is guided along a rectilinear trajectory during bending and, after the bending edge has passed the forming edges, it is displaced along an adjustment path which approaches the trajectory of the bending edge.
An easily practicable variant of the method is that after the bending edge has passed the forming edges, the adjustment of the bending edge is largely or completely stopped and simultaneously or immediately thereafter the forming edges at a right angle transverse to or transverse to the trajectory of the bending edge be guided. In this case, the lower jaw or lower clamping bar does not require vertical adjustability and vertical adjustment of the workpiece during the forming operation is not required.
An alternative embodiment of the method may be that after the bending edge has passed the forming edges, the forming edges are guided transversely to or across the trajectory of the bending edge at a skew angle and the traverse edge movement coupled with the movement of the forming edges continues until completion of the forming operation Is used. The transverse guide of the clamping bar can be accomplished in this case alone by two parallel clamping bar guides.
For a better understanding of the invention, this will be explained in more detail with reference to the following figures.
In each case, in a highly simplified, schematic representation:
Fig. 1 shows the method for forming a workpiece before the beginning of
forming process;
2 shows the method for forming a workpiece at the end of the Um¬formvorganges.
3 shows a view of a possible embodiment of a bending press according to the invention;
4 is a sectional view of a possible embodiment of a bending press;
Fig. 5 is a sectional view of another possible embodiment of a bending press;
Fig. 6 is a sectional view of another possible embodiment of a bending press.
1 and 2, the inventive method for forming a workpiece 1 is shown, wherein in Fig. 1, the state before the start of the forming
Operation and in Fig. 2, the state is shown at the end of the forming process. This is a special embodiment of the forming process known as swing bending.
In this case, the workpiece 1 is clamped between a first clamping jaw 2 and a second clamping jaw 3, so that a partial section 4 can be angled relative to the remaining workpiece 1 during the subsequent forming operation. The workpiece 1 consists of at least partially planar Ma¬terial, which is suitable for a bending deformation. At the jaw 2 a Umformkante 5 is formed, which is effective when the section 4 is angled downward, and is formed on the second jaw 3, a second Umform¬ edge 6, which is effective when the portion 4 abge upwards Is angled. In the illustrated embodiment, the jaws 2, 3 have a shoe-like cross-section, whereby a workpiece 1 on the Umformkan¬ten 5, 6 can be bent beyond a right angle. The bending of the section 4 by means of a bending beam 7, which has a bending edge 8. In FIGS. 1 and 2, a bending beam 7 with a bending edge 8 is shown here, which is provided for an angling down of the part section 4 downwards.
The forming edges 5, 6 are provided with a radius which also influences the smallest possible inner radius of the bent workpiece at the forming point.
During the forming process, the bending beam 7 is moved approximately at right angles to a horizontal workpiece plane 9, the bending edge 8 having a horizontal distance 10 from the forming edges 5, 6.
The distance 10 is at least as large as a workpiece thickness 11 selected, and is preferably 1.5 times to 8 times the workpiece thickness 11. In particular, in thick workpieces 1, a greater distance 10, the initiation of the forming process by a facilitate better leverage.
In the forming process according to the invention, the bending edge 8 is guided along a rectilinear trajectory 12, even after it has passed the two forming edges 5 and 6 and thereby the part section 4 is brought into an angled position. With fixed clamping jaws 2, 3, with a linear trajectory 12 of the bending edge 8 of the bending section 8, the section 4 can be angled maximally up to 90 °, if a distance 10 is selected which corresponds approximately to the workpiece thickness 11, by an unavoidable springback after removal of the Bending edge 8 can be achieved with the rectilinear movement of the bending edge 8 only a deformation angle smaller than 90 °. In the forming methods known from the prior art, therefore, the bending beam 7 with the bending edge 8 after passing through the forming edges 5, 6 is moved further away from the rectilinear trajectory 12 with a movement component parallel to the workpiece plane 9 to the clamping jaws 2, 3, thereby Part 4 can be converted over a deformation angle of 90 ° beyond. This requires that the guidance of the bending beam 7 in both the vertical direction and in the horizontal direction must allow movements.
In contrast to this method known from the prior art, the bending edge 8 remains in the method according to the invention even after Pas¬Sieren the forming edge 5, 6 on its rectilinear trajectory 12, and a bending of the portion 4 is caused by 90 ° beyond in that the forming edges 5, 6 of both clamping jaws 2, 3 are adjusted together with the clamped workpiece 1 along an adjustment path 13 which approaches the trajectory 12 of the bending edge 8 and is represented by an arrow in FIG. Thus, while in the known forming method of the pivoting bending of the bending beam 7 must perform a relatively complicated movement in order to achieve an angled movement of the bending edge relative to the Umformkanten 5, 6, it is simplified in the inventive method in that the bending beam 7 and the jaws 2, 3 only straight Moving paths have to put back, making the necessary guides structurally simple structure.
The workpiece 1 bent from the bending edge 8 in downward direction before the transverse movement of the clamping edges 5, 6 is indicated by dashed lines in FIG. The subsequent reduction of the distance 10 between clamping jaws 2, 3 and the bending beam 7 or the forming edges 5, 6 and the bending edge 8 after passing the Umformkanten 5, 6 results accordingly from a transversely to geradli¬nigen trajectory 12 extending relative movement between the Klemm¬ Bake 2, 3 and the bending beam 7. It is possible that in this Relativbe¬wegung the bending beam 7 is at a standstill and only the clamping pads 2, 3 are moved with the clamped workpiece 1, but it is also possible that the rectilinear movement of the bending edge 8 along the movement path 12 is continued and at the same time the clamping jaws 2, 3 along ei¬nes transverse to the movement path 12 Verstellweges be adjusted, resulting in a rectangular or oblique relative movement between the bending beam 7 and jaws 2, 3rd results. Accordingly, the adjustment path 13 of the clamping jaws 2, 3 is not necessarily oriented at right angles to the movement path 12 of the bending edge 8, but can also run obliquely to it along a straight line or along a curved path, for example a circular path, which is inclined to the movement path 12. In FIG. 2, such a curved adjustment path 14 is shown with a dashed arrow, which can be generated, for example, by means of an eccentric mounting of the clamping jaws 2, 3 or of the machine parts carrying them.
In FIGS. 1 and 2, the clamping movement 15 of the clamping jaw 3 relative to the jaw 2 is further shown with a double arrow. An alternative embodiment of the method is likewise indicated in FIG. 2, in which the bending beam 7 is moved along a movement path 16 deviating from the vertical direction but again indicated by a straight line arrow, and the clamping jaws 2, 3 together with the clamped workpiece 1 traversing an oblique adjustment path 17 in relation to the vertical direction. The adjustment movements of the bending beam 7 and of the clamping jaws 2, 3 can be coupled to it by a control device in such a way that results in an optimum relative movement for the forming process.
Fig. 3 shows a rear view of a bending press 18 according to the invention with which the method of forming described with reference to FIGS. 1 and 2 can be performed.
The bending press 18 comprises a machine frame 19 in which the adjustable bending beam 7 already described with reference to FIGS. 1 and 2 as well as two clamping beams carrying the clamping jaws 2, 3 are adjustably mounted. The illustrated machine frame 19 comprises on its front side 20 a plate-shaped O-frame 21 and on its rear side 22 likewise a plate-shaped O-frame 23. The recesses in the O-frames 21 and 23 form a through-opening 24 which extends through the bending press 18 therethrough and the supply of a workpiece 1 to the clamping bar or the bending beam 7 makes it possible and, for example, the removal of the bent workpiece on the back 22 allows.
On the front side 20 of the bending press 18, a support device 25 is arranged in the illustrated embodiment, which can bear the outside of the bending press 18befennlichen part of a workpiece 1 and optionally also in addition by the jaws 2, 3 executed with the clamped workpiece 1 Be¬wegungen nachfährt to avoid undesired workpiece deformations. This adjustment of the support device 25 is indicated in Fig. 3 by double arrows in the main coordinate directions.
The machine frame 19 further includes side posts that connect the two O-frames 21, 23 in the illustrated embodiment. Gaps between supporting components of the machine frame 19 may be closed by covers, whereby a largely closed Maschi¬nenäußeres is given.
4 shows a cross section through a further embodiment of a bending press 18, with which a workpiece 1 can be angled.
A workpiece 1 can for this purpose be introduced through a passage opening 24 in the machine frame 19 into the interior of the bending press 18, where it is held for the execution of the forming operation by means of a clamping device 26. The clamping device 26 comprises a first clamping bar 27 of the first clamping jaw 2 carries and a second clamping bar 28 which carries the second clamping jaw 3. The second clamping bar 28 can be adjusted relative to the first clamping bar 27 by means of a clamping bar guide 29 and a clamping bar drive 30. The first lower clamping bar 27 is widened in this embodiment to an O-frame 31 which extends into the upper half of the bending press 21 and carries the fixed part of the clamping bar guide 29. This encompasses, for example, a linear guide rail, with which the upper second clamping bar 28 is guided in the machine frame 19 in the vertical direction. The clamping bar drive 30 is formed in the illustrated embodiment by a Hydraulikzy¬ Linders 32, but may alternatively be carried out by a spindle drive with Elekt¬romotor.
The adjustable bending beam 7 is mounted on the machine frame 19 by means of a bending beam guide 33 in the form of a linear guide 34 and is driven by a bending beam drive 35, here in the form of a hydraulic cylinder 36. The bending edge 8 at the lower end of the bending beam describes a rectilinear trajectory 12 (see FIG. 1, 2), which runs in the vertical direction in the illustrated embodiment. By means of an oblique bending beam guide 33, a movement path 12 deviating from the vertical direction could also be possible. As further illustrated in FIG. 4, the bending edge 8 can be formed by a bending tool 37, which is exchangeably fixed to the bending beam 7. Furthermore, the bending edge 8 can be adjusted in length by lining up such bending tools 37 to the required bending task.
In Fig. 4 is further indicated by dashed lines that below the first bending beam 7, a further bending beam 38 may be provided with a further bending edge 39, with a workpiece 1 can also be angled upwards. The representation of the bending beam guide and the bending beam drive is omitted for reasons of clarity at this point.
In order to carry out the bending method already described with reference to FIGS. 1 and 2, the clamping jaws 27 and 28 are mounted so as to be adjustable in the horizontal direction relative to the machine frame 19 by means of a transverse guide 40 and an adjusting drive 41. As a result of this adjustability, a section of the workpiece 1 angled off with the aid of the bending beam 7 or the bending edge 8 can be angled off over a deformation angle of greater than 90 °.
The adjusting drive 41 is supported on the one hand on the machine frame 19 and on the other hand on the O-frame 31, which is connected to the lower clamping bar 27 and via the clamping bar guide 29 with the upper clamping bar 28. The O-frame 31 is guided on its underside and its upper side via the transverse guide 40 on the machine frame 19, wherein a linear guide is provided as the transverse guide 40 in the illustrated embodiment. As an alternative to this embodiment, a transverse guide 40 would also be possible by means of eccentric mounting on the machine frame 19, as a result of which an arcuate adjustment path 14 already shown in FIG. 2 is possible for approaching the clamping jaws 2, 3 to the movement path of the bending edge 8 ,
The adjusting drive 41 is realized in the illustrated embodiment by two hydraulic cylinders 42, which perform synchronized movements and thereby ensure a uniform horizontal adjustment. In this embodiment of a bending press 18 it is advantageous that the lower clamping jaw 2 does not have a vertical movement component during the forming process and therefore also a clamped workpiece 1 only has to be moved in the horizontal direction. Vertical adjustment of a support device 25 is not necessary in this case.
FIG. 4 further shows that the identification jaws 2, 3 can be composed of clamping tools 43 fastened to the clamping beams 27, 28.
FIG. 5 shows a further and optionally independent embodiment of a bending press 18, again using the same reference numerals or component designations as in the preceding FIGS. 1 to 4.
In the embodiment shown in FIG. 5, the machine frame 19 comprises two O-frames 21 and 23 spaced apart from each other, between which clamping jaws 27 and 28 and the alternatively used bending beams 7 and 38 are arranged so as to be adjustable.
The bending beams 7, 38 carry, as already described with reference to FIG. 4, bending tools 37, with which a bending edge 8 or 39 adapted for the respective bending task is formed. The bending tools 37 can be adjusted by means of movement spindles 44 automatically along the bending beam 7, 38 guided example beispielswei¬se.
The bending beams 7 and 38 are adjustably mounted by means of linear guides 34 on the inside of the O-frame 23 and further driven by means not shown Biege¬balkenantrieben 35, for example in the form of hydraulic cylinders or spindle drives with electric motor drive-connected.
The clamping jaws 27 and 28 carrying the clamping jaws 2, 3 are mounted on the inner side of the further O-frame 21, wherein the clamping bar guide 29 of the upper clamping bar 28 is arranged obliquely with respect to the bending beam guide 33 in the form of the linear guide 34.
The obliquely arranged clamping beam guide 29 is in this Ausführungsbei¬spiel part of the transverse guide 40, which further includes a Klemmbalkenführung45 of the lower clamping bar 27. This is aligned parallel to the clamping bar guide 29 of the upper clamping bar 28, which is why the clamping bars 2 and 3 clamping a workpiece 1 can be adjusted exactly synchronously with one another. For this purpose, not shown in Fig. 5 clamping bar drives are provided, which encompass, for example, hydraulic cylinders or spindle drives with electric motors. The adjustment drive 41 for the clamping bar 27 and 28 is formed in this Ausfüh¬ form by the two synchronized beam drives. Alternatively, it is also possible to mechanically lock the two clamping bars 27 and 28 with the workpiece 1 clamped therebetween and to displace both clamping bars 27, 28 by means of only one clamping bar drive, whereby an adjusting drive 41 for the transverse movement of the clamping bars 27 and 28 relative to the bending bar movement is likewise formed can be. As further shown in FIG. 5, a support element 46 can be provided on the lower clamping bar 27, which forms part of a support device 25 for a workpiece 1. The two O-frames 21 and 23 are connected via side posts 47 or other cross connectors mit¬, whereby the power flow between the two O-frames 21 and 23 is made.
The inclination of the clamping beam guides 29 and 45 can be made, for example, by wedge-shaped spacers 48 to which bearing rails for the linear guides of the clamping beam guides 29, 45 are attached. A zwi¬schen the linear guide 34 of the bending beam 7, 38 and the Klemmbalkenführun¬gen 29, 45 existing helix angle 49 is in particular between 10 ° and 30 °.
FIG. 6 shows a further embodiment of the bending press 18, which may be independent of itself, wherein the same reference numerals or component designations are used again for the same parts as in the preceding FIGS. 1 to 5. In order to avoid unnecessary repetition, reference is made to the detailed description in the preceding FIGS. 1 to 5 or reference made.
The embodiment according to FIG. 6 has a kinematics of the beam movement similar to the embodiment according to FIG. 5, but in contrast to FIG. 5, a central, plate-shaped frame part 50 is provided, on the opposite outer sides 51 and 52 of which the bending beam guides 33, 34 or the clamping beam guides 29 and 45 are arranged. The force flow from the Um¬formkanten to the bending edge takes place in this embodiment directly over the central frame member 50 and can be dimensioned weaker in this embodiment, the Seiten¬ stator 47 due to the lower load werden.Bei this embodiment, the central frame member 50, for example, as O
Executed frame and results both before and after the Biegewerkzeu¬gen a very large bending space.
In the described embodiments, it is further possible for two bending bars 7, 38 spaced apart from one another and oriented in opposite directions to be arranged on a common beam frame, in particular O-frame, and this being rectilinearly adjustable by means of the bending beam guide 33 in the form of the linear guide 34 is.
For the sake of order, it should be pointed out that for a better understanding of the structure of the bending press 18, these or their components have been shown partially un-scaled and / or enlarged and / or reduced in size
The embodiments show possible embodiments of the bending press 18, wherein it should be noted at this point that the invention is not limited to the specifically illustrated embodiments of the same, but vielmehrauch various combinations of the individual embodiments are interchangeable and this possibility of variation due to the doctrine for technical handling by tangible invention in the knowledge of professional in this technical field.
Furthermore, individual features or combinations of features from the different embodiments shown and described can also represent solutions that are inventive, inventive or inventive.
The problem underlying the independent inventive solutions can be taken from the description.
Finally, it should be noted that in the differently described embodiments, the same parts are provided with the same reference numerals or the same component designations, wherein the disclosures contained in the entire description mutatis mutandis to the same parts with the same Bezugsbe or. same component names can be transferred. Also, the location information chosen in the description, such as top, bottom, side, etc. related to the immediately described and illustrated figure and these conditions are to be transferred in a change in position mutatis mutandis to the new situation. All statements on ranges of values in the description given herein are to be understood as including any and all subsections thereof, for example, the indication 1 to 10 should be understood as encompassing all subranges, starting from the lower bound 1 and the upper bound 10, i. all subregions 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 Figs. 1, 2; 3; 4; 5; The embodiments shown in FIG. 6 form the subject of independent solutions according to the invention. The related objects and solutions according to the invention can be found in the detailed descriptions of these figures.
LIST OF REFERENCES 1 Workpiece 31 O-frame 2 Jaw 32 Hydraulic cylinder 3 Jaw 33 Bending beam guide 4 Subsection 34 Linear guide 5 Forming edge 35 Bending beam drive 6 Forming edge 36 Hydraulic cylinder 7 Bending beam 37 Bending tool 8 Bending edge 38 Bending beam 9 Workpiece plane 39 Bend edge 10 Distance 40 Transverse guide 11 Workpiece thickness 41 Adjustment drive 12 Travel path 42 Hydraulic cylinder 13 Adjustment 43 Clamping tool 14 Adjustment 44 Spindle 15 Clamping movement 45 Clamping bar guide 16 Movement path 46 Support element 17 Adjustment 47 Sidestand 18 Bending press 48 Spacer 19 Machine frame 49 Slanting angle 20 Front 50 Frame part 21 O-frame 51 Outside 22 Back 52 Outside 23 O-frame 24 Through opening 25 Support device 26 Clamping device 27 Clamping bar 28 Clamping bar 29 Clamping bar guide 30 Clamping bar drive

权利要求:
Claims (15)
[1]
A bending press (18) for forming a workpiece (1), comprising a fixed machine frame (19), a clamping device (26) arranged thereon with a first clamping bar (27) comprising a first clamping jaw (2) with a first forming edge (5). and a relative thereto by means of a clamping bar guide (29) and a clamping bar drive (30) adjustable second clamping bar (28) having a second jaw (3) with ei¬ner second forming edge (6), wherein the workpiece (1 ) can be clamped between the clamping jaws (2, 3), and at least one bending beam (7, 38) adjustable by means of a bending beam guide (33) and a bending beam drive (35) relative to the machine frame (19) with at least one bending edge (8, 39), whose trajectory (12) at a distance (10) on the Umform¬ edges (5, 6) of the jaws (2, 3) passes and with which between the Umformkanten (5, 6) outstanding portion (4) of the workpiece (1) right ¬lativ to the between the clamping jaws (2, 3) clamped part of the workpiece (1) can be angled, characterized in that the Biegebalkenfüh¬ rung (33) is designed as a linear guide (34) and a rectilinear Bewegungsbahn (12) the bending edge (8, 39) and the Umformkanten (5, 6) of both jaws (2, 3) by means of a transverse guide (40) of the clamping bar (27, 28) and an adjusting drive (41) along a Verstellweges (13, 14, 14) adjustable, which approximates the trajectory (12) of the bending edge (8).
[2]
2. Bending press (18) according to claim 1, characterized in that the cross guide (40) comprises the clamping bar guide (29) of the second clamping bar (28) and a structurally separate clamping bar guide (45) of the first clamping bar (27), wherein the Adjustment paths (13, 14, 17) of the clamping bar (27,28) parallel to each other.
[3]
3. Bending press (18) according to claim 2, characterized in that the clamping bar guides (29, 45) are designed as mutually parallel linear guides ausge¬ and in a helix angle (49), in particular between 10 ° and 30 °, to the bending beam guide (33).
[4]
4. bending press (18) according to claim 1, characterized in that the Querführung (40) of the clamping bar (27, 28) extends approximately at right angles to the Biegebalken¬führung (33).
[5]
5. bending press (18) according to claim 1 or 4, characterized in that the clamping bar (27, 28) on a clamping bar frame, in particular O-frame (31) are arranged, which relative to the machine frame (19) by means of the transverse guide (40). and the adjusting drive (41) transversely to the movement path (12) of the bending edge (8, 39) is adjustable.
[6]
6. bending press (18) according to any one of the preceding claims, characterized in that the bending beam guide (33, 34) on a first frame part, in particular O-frame (23), and the clamping bar guide (29, 45) and the transverse guide (40) are arranged on a second frame part, in particular a second O-frame (21), distanced therefrom.
[7]
7. Bending press (18) according to one of claims 1 to 6, characterized gekenn¬zeichnet that the bending beam guide (33) and the jaw guide (29,45) and the transverse guide (40) on opposite outer sides (51,52) of a central frame part ( 50), in particular O-frame, are arranged.
[8]
8. bending press (18) according to any one of the preceding claims, characterized in that on the machine frame (19) two oppositely adjustable bending beam (7, 38) are arranged for angling in opposite directions.
[9]
9. bending press (18) according to one of claims 1 to 7, characterized gekenn¬zeichnet that two spaced apart and oppositely oriented bending beam (7, 38) on a common beam frame, in particular O-frame, are arranged and this by means of Bending beam guide (33) is rectilinearly adjustable.
[10]
10. bending press (18) according to any one of the preceding claims, characterized in that a horizontal distance (10) between the clamping bar (27, 28) and bending beam (7, 38) is adjustable.
[11]
11. bending press (18) according to any one of the preceding claims, characterized in that the forming edges (5, 6) on the jaws (2,3) of tool segments in the form of clamping tools (43) and / or the bending edge (8, 39) on Bending beam (7, 38) of tool segments in the form of bending tools (37) are composed.
[12]
12. bending press (18) according to any one of the preceding claims, characterized in that in the machine frame (19) between the clamping bar (27, 28) and the bending beam or beams (7, 38) one of the front side (20) free Through opening (24) for a workpiece (1) is formed.
[13]
13. A method for forming a workpiece (1), in which this zwi¬schen a first jaw (2) having a first forming edge (5) and a second clamping jaw (3) with a second forming edge (6) is clamped so that a portion (4) protrudes between the forming edges (5, 6) and subsequently a bending edge (8, 39) of an adjustable bending beam (7, 38) is guided past the forming edges (5, 6) at a distance (10), whereby the portion (FIG. 4) is angled relative to the part of the workpiece (1) clamped between the clamping jaws (2, 3), characterized in that the bending edge (8, 39) is guided along a rectilinear trajectory (12) during bending and after the bending edge (8, 39) has passed the forming edges (5, 6) along an adjustment path (13, 14, 17) which approaches the path of movement (12) of the bending edge (8, 39).
[14]
14. The method according to claim 13, characterized in that after the bending edge (8, 39) has passed the Umformkanten (5, 6), the adjusting movement of the bending edge (8, 39) is largely or completely stopped and simultane- ously or directly thereto then the forming edges (5, 6) are approximated at right angles transversely to or across the path of movement (12) of the bending edge (8, 39).
[15]
15. The method according to claim 13, characterized in that after the bending edge (8, 39) has passed the Umformkanten (5, 6), the Umformkanten (5,6) in a helix angle (49) transversely to or across the Bewegungs¬ web (12) of the bending edge (8, 39) are approximated and the adjusting movement of the bending edge (8, 39) coupled with the movement of the Umformkanten (5, 6) is continued until completion of the forming process.

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同族专利:

公开号 | 公开日

US10350662B2|2019-07-16|

EP3052256B1|2017-07-26|

AT514821B1|2015-06-15|

US20190247905A1|2019-08-15|

EP3052256A1|2016-08-10|

WO2015048836A1|2015-04-09|

US11117175B2|2021-09-14|

US20160271671A1|2016-09-22|

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法律状态:

优先权:

申请号 | 申请日 | 专利标题

ATA50645/2013A|AT514821B1|2013-10-04|2013-10-04|Bending press and bending process|ATA50645/2013A| AT514821B1|2013-10-04|2013-10-04|Bending press and bending process|

EP14805166.7A| EP3052256B1|2013-10-04|2014-10-02|Bending press and bending method|

US15/026,632| US10350662B2|2013-10-04|2014-10-02|Bending press and bending method|

PCT/AT2014/050232| WO2015048836A1|2013-10-04|2014-10-02|Bending press and bending method|

US16/397,715| US11117175B2|2013-10-04|2019-04-29|Bending press and bending method|

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