• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a method for positioning a workpiece (2) on a press brake (1), comprising feeding the workpiece (2) from the front side (12) between an upper tool (5) and a lower tool (4), approximating the workpiece (2 ) to a on the back (15) of the press brake (1) arranged abutment device (6), placing the workpiece (2) on the lower tool (4), positioning and striking a workpiece edge (13) on a stop surface (9, 10) of a stop element (7, 8) of the stop device (6) and setting the workpiece (2) on the stop element (7, 8) by a holding device (21) associated therewith. In this case, the abutment surface (9,10) for striking the workpiece edge (13) in a stop position (20) with a small horizontal distance (16) to the lower tool (4) positioned and after striking the holding device (21) activated. Subsequently, the stop element (7) is adjusted together with the fixed workpiece (2) in a required for the start of bending deformation bending output position (22) with increased horizontal distance (23) to the lower tool (4).
    公开号:AT510689A4
    申请号:T2982011
    申请日:2011-03-07
    公开日:2012-06-15
    发明作者:
    申请人:Trumpf Maschinen Austria Gmbh；
    IPC主号:
    专利说明:

    ♦ 7 ♦ 7
    -1 -
    The invention relates to a method for positioning a workpiece on a vertically operating press brake for a bending operation according to the preamble of claim 1.
    In order to support the exact positioning of a workpiece with respect to the bending forming effecting a bending tools, it is known to equip press brakes with stop devices in which Anschiagelemente, in particular stop finger stop surfaces, with which an edge or surface of the workpiece to be bent before the bending process is brought into contact. The stop elements are preferably adapted by means of CNC-controlled movement axes in their position to the respective bending task.
    From US 2,429,387 is further known to assign such stop elements, a holding device for the workpiece in the form of an electromagnet assembly. This holding device serves to reliably hold the workpiece in contact with the stop surface until the beginning of the bending deformation, thereby ensuring the bending accuracy.
    When bending workpieces with relatively large dimensions and low bending stiffness, ie workpieces with small sheet thickness, it comes with increasing distance from the area in which such a workpiece is held to a deflection in the vertical direction due to its own weight, whereby a stop of such a workpiece by hanging Edges on the usual stop devices is problematic because the exact position of the workpiece edge to be abutted or workpiece surface can not be met by the vertical deflection in the supply of the workpiece and it can easily happen that the workpiece edge misses the stop surface on the stop element and below or above this comes to rest, whereby the stop process may fail. For a manual N20KV31600 -2-
    Feeding by an operator, these problems due to workpiece deflections can often be compensated for by the skill of the operator by exerting compensatory movements on the workpiece, but automated feeding and abutment of less rigid workpieces is not possible. This problem is the greater the further the abutment surface is removed from the vertical working plane of the press brake, since a greater free bending length of the workpiece is given when the workpiece is automatically supplied by an operator by hand or by means of a handling device and the hands or the handling device should not or can not be spent behind the work plane.
    The object of the invention is to facilitate the positioning of a workpiece for subsequent bending and to improve even for less rigid workpieces. The object of the invention is achieved by a method having the characterizing features of claim 1. By the method according to the invention, the stop process is moved in the vicinity of the lower tool and the actual bending output position only then made by adjusting the stop element together with the fixed thereto by means of the holding workpiece. By such, adjacent to the lower tool stop position an undefined and uncontrollable deflection of the workpiece edge to be fitted behind the lower tool is minimized, since only a short free bending length is available between the support surface on the lower tool and the workpiece edge to be attached.
    The workpiece edge of the resting on the lower tool workpiece is thus at least approximately at the height of the support surface of the lower tool and can also be reliably carried out on stop surfaces with small vertical dimension a stop operation and a mispositioning of the workpiece can be avoided. While in the conventional positioning of a workpiece, the positioning process entirely by the operator or the handling device on the front of the working plane of the press brake, the positioning process is divided into a feeding of the workpiece by the operator or by means of a handling device and a subsequent final positioning by means of the stop device. While in the conventional bending process with the tool edge to be fitted, the abutment surface already in the bending starting position must be hit, N2010 / 31600
    -3- it is sufficient in the method according to the invention to thread the workpiece edge between the upper tool and lower tool in a sense, which requires a much lower positioning accuracy of the workpiece edge to be abutted and then lower the workpiece to the lower tool. The tool edge to be abutted is located at a small distance behind the working plane on the lower tool and can undergo no appreciable deflection up to the also positioned at a small distance to the working surface stop surface and thus be struck easily on the stop element.
    The attack of less rigid workpieces is facilitated by both manual feeding and automated feeding by means of a handling device.
    After activating the holding device on the stop device and releasing the workpiece by the operator or by the handling device, the stop element is moved together with the workpiece in the bending output position. An occurring between the lower tool and the stop element deflection of the workpiece to be bent which could cause a too large bending length of the bent workpiece, can be compensated by shortening the horizontal distance of the stop surface or the deflection limiting or preventing, movable support elements.
    As a result of the fact that the workpiece is positioned closer to the stop position than in the bending output position when viewed from the operator side, the points of attack on the workpiece used by a handling device are further positioned towards the operator side and if the workpiece is gripped on the side there is less chance of lateral collision neighboring bending tools. A set of different bending tools arranged along the pressing bars can thereby be arranged with less lateral spacing in many cases, since the handling device has a greater distance from the working plane and also no space between adjacent ones when a workpiece is gripped on the side for the handling device Bending tools must be provided.
    In an embodiment of the method according to claim 2, the stop movement takes place by adjusting the stop element and can be carried out a position correction of the workpiece in which this by the operator or by the handling N2010 / 31600
    -4-device is held slightly displaceable on the lower tool. The accuracy requirements for a handling device used thereby are relatively low.
    Alternatively, according to claim 3, the actual Anschiagbewegung also be carried out by the workpiece to be bent, which also a relative displacement of the workpiece against a handling device used to avoid too high contact forces in fixed stop elements can be helpful or a mobility of the stop elements in the hand ha bungs device immovably held workpiece, wherein a caused by the stopper change in position of a stop element is corrected in the subsequent start of the bending output position again or is eliminated.
    The deflection of the part of the workpiece that is behind the work plane is minimized if the stop position according to claim 4 is provided directly behind the lower tool.
    By the adjacent to the lower tool stop position of the stop surface, a Anschlagftäche with small dimension in the vertical direction can be easily taken, but it is also possible to provide a highest positioning accuracy of the workpiece edge to be fitted also according to claim 5 and a bearing surface on the stop element, whereby the position the workpiece edge is defined exactly in the horizontal direction by the stop surface and in the vertical direction by the Auflagefiäche on the stop element. The stop element with the support surface is then raised in the vertical direction and thus spent the Auflagefiäche of the lower tool from the lower waiting position in a matching with the support surface of the lower tool height position. The bearing surface on the stop element and the support surface on the lower tool are thus at the same height and the holding device of the stop element can be activated, whereby the workpiece is fixed to the stop element and can then be moved in the horizontal direction in the bending starting position.
    Also advantageous is an embodiment of the method according to claim 6, whereby the workpiece is fixed in a defined position until the actual bending operation, even if the holding device is already deactivated before the beginning of the bending operation, whereby the movement of the workpiece during the bending operation by the holding device not can be hampered. N2010 / 31600
    An alternative implementation of the method according to claim 7 is to track the workpiece during the bending operation by means of the stop element with activated holding device, whereby uncontrolled and undesirable deformations of the workpiece during the bending operation is counteracted. The struck workpiece edge is thereby guided approximately on an arcuate path starting from the bending output position, wherein the center of the web corresponds approximately to the position of the bending edge on the punch.
    An automation of the method can be achieved by an embodiment according to claim 8, wherein an automated feeding of less rigid workpieces by means of a programmable handling device by dropping in the stop position is significantly facilitated by the reduced workpiece deflection.
    Since the workpiece is fixed after the attacks by the holding device, and according to claim 9, the handling device or the gripping device arranged thereon can be deactivated and removed from the bending zone, whereby the time required for the bending deformation of the workpiece movement space is free.
    A possible development of the method consists in the implementation according to claim 10. Especially with less rigid workpieces, the position of the workpiece edge to be abutted is predictable only with low reliability, which is why a detection of the same can facilitate the stop process. As a result, corrections can be made in the positioning of the workpiece and / or in the positioning of the stop element, as a result of which the workpiece edge can strike the stop surface more reliably.
    The detection of the workpiece edge position is preferably carried out according to claim 11 without contact, in particular optically with a camera.
    The setting of the workpiece on the stop element is advantageously carried out according to claim 12 by means of a vacuum suction, a pliers gripping element or an electromagnet. Since the workpiece is moved from the butting position to the bending exit position substantially in the horizontal direction, no large moving forces are required, and the hatching device of the aforementioned holding members can be formed in a small size. N2010K1600
    -6-
    For workpieces in which a very large deflection in the implementation and positioning is possible, it may be advantageous to carry out the method according to claim 13, whereby the feeding and placing of the workpiece on the lower tool can be substantially facilitated.
    For a better understanding of the invention, this will be explained in more detail with reference to the following figures.
    Each shows in a highly schematically simplified representation:
    Fig. 1 is a view of a press brake for carrying out the inventive
    process;
    Figure 2 shows the positioning of a workpiece immediately before the attacks on the stop device in the stop position.
    3 shows the workpiece positioned between the upper tool and lower tool immediately before the bending operation in the bending starting position;
    4 shows the positioning of a workpiece by means of a pliers gripping element on the stop element;
    FIG. 5 shows the positioning of a workpiece by means of a vacuum suction element on the stop element; FIG.
    Fig. 6, the positioning of a workpiece by means of an electromagnet on An-beatingfement.
    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 location information selected in the description, such as Z-B. top, bottom, side, etc. related to the immediately described and illustrated figure and are to be transferred to the new situation mutatis mutandis when a change in position. Furthermore, individual features or combinations of features from the different exemplary embodiments shown and described can also represent independent, inventive or inventive solutions. N2010 / 31600 -7-
    Fig. 1 shows a view of a bending machine in the form of a vertically operating press brake 1, on which a method according to the invention for positioning a workpiece 2 for the subsequent bending can be carried out. The workpiece 2 is supplied in the illustrated embodiment by means of a handling device 3, preferably in the form of a handling robot between a lower tool 4 on the fixed lower pressing beam and an upper tool 5 on the adjustable upper clamping bar, and brought by means of a stopper 6 in a defined position for carrying out the bending operation , The stop device 6 comprises in Dargesteifte embodiment two stop elements 7 and 8, with approximately vertically extending abutment surfaces 9 and 10 at which a workpiece to be bent 2 is struck with a workpiece edge or a workpiece surface, and is placed immediately before it on the lower tool 4. The method is of course feasible even with only one stop element or more than two stop elements. As a result, when the method for a stopper member 7 is described, it may also be related to two or more simultaneously active stopper members 7, 8, etc. with corresponding stopper surfaces 9, 10 and so on.
    As shown in Fig. 1, it may be a btegesteifen workpiece 2 due to its own weight to a deflection 11, which may complicate the attacks on the abutment surfaces 9,10 or impossible. The feeding of the workpiece 2 can alternatively be done by an operator, which also can cause the problem of deflection of the workpiece 2 and the attacks can be difficult. Even if the workpiece 2 is placed on a support surface 12 at the top of the lower tool 4, located behind the vertical plane working part of the workpiece 2 can undergo a deflection 11, which is the greater, the farther the workpiece trailing edge must be spent behind the work plane.
    Fig. 2 shows in a partial section along line II - II in Fig. 1, the positioning of a workpiece 2 on a press brake 1 immediately before placing on the lower tool 4 and the attacks on the stop element 7. The positioning can be carried out by an operator or also, as shown in Fig. 1 and 2, by means of a handling device 3. The workpiece 2 is thereby introduced from the front 12 of the press brake 1 between the upper tool 5 and the lower tool 4, whereby a workpiece edge to be abutted 13 by a between lower tool 4th and upper tool 5 spanned vertical working plane 14 is moved toward the back 15 of the press brake 1. In the area of the rear 15 is the N2010 / 31600 -8-
    Stop device 6 is arranged, which has a CNC-axis controlled adjustable stop member 7, which has the approximately vertically standing stop surface 9. For positioning of the workpiece 2, the stop surface 9 is close, preferably as close as possible, to the lower tool 4 and the working plane 14, whereby a distance 16 of the workpiece edge 13 of the working plane 14 when abutting the stop surface 9 small compared to the surface dimensions of the workpiece 2 is held. If, in the course of the positioning process, the workpiece 2 is now placed with its workpiece lower side 17 on a bearing surface 18 of the lower tool 4, the workpiece edge 13 can experience only a slight or negligible deflection due to the small distance 16, and thus the position of the workpiece edge 13 within a small tolerance window, which is why due to the method according to the invention even a slightly rigid workpiece 2 can still be struck on a small stop surface 9, without the risk that this is missed by the workpiece edge 13. 2, the workpiece 2 is shown in a position in which the workpiece edge 13 does not yet contact the abutment surface 9 and the workpiece underside 17 also does not touch the bearing surface 18 on the lower tool 4. Starting from this pre-positioning, the workpiece 2 can now be positioned so that either the workpiece bottom 17 is placed on the support surface 18 and then the workpiece 2 is contacted in a horizontal direction against the stop surface 9 or first placed the workpiece bottom 17 on the support surface 18 is and then the stop surface 9 is moved against the workpiece edge 13 of the resting workpiece 2.
    Independently of this, furthermore, a contact surface 19 on the stop element 7 can be brought to a height position coinciding with the bearing surface 18 of the lower tool 4 even before placing the workpiece 2 on the lower tool 4, or even after placing the workpiece 2 on the lower tool 4 on the same Level as the support surface 18 are raised. When contacting the workpiece edge 13 with the stop surface 9, the stop element 7 and the stop surface 9 is viewed in a stop position 20 in the horizontal direction and the stop element 7 before placing the workpiece 2 on the lower tool 4 in a waiting position in which the support surface 19th on the stop element 7 at the same height or slightly below the support surface 18 of the lower tool 4 viewed in the vertical direction, is positioned. N2010 / 31600 -9-
    After the workpiece 2 is in contact with its workpiece edge 13 on the abutment surface 9, a holding device 21 is activated on the abutment element 7, by means of which the workpiece 2 is fixed or fixed relative to the abutment element 7 and thereby the exact positioning of the workpiece 2 is ensured. In this case, the holding device 21 itself can form the support surface 19 of the stop element 7 or even be distanced from the support surface 19 or the stop surface 9 of the stop element 7.
    After the workpiece 2 is fixed by means of the holding device 21 on the stop element 7, the stop element 7 is moved from the stop position 20 in a dashed line indicated bending exit position 22, and the workpiece 2 thereby brought into the required position for the bending operation, with the length of a is determined by the bending process resulting bending gift. In this step of workpiece positioning, the abutment surface 9 of the abutment element 7 is adjusted in the horizontal direction from a small or minimum distance 16 to the working plane 14 at an increased distance 23, which defines the bending output position 22. During this adjusting movement, the workpiece 2 can still be guided by a gripping device 24 of the program-controlled handling device 3 over at least part of the adjustment path, since the workpiece 2 is fixed to the stop element 7 anyway by means of the holding device 21, the adjustment of the workpiece 2 can be made from the stop position 20 take place in the bending output position 22 without the assistance of Handha-bungsvorrichtung 3 and therefore the gripping device 24 are disabled after setting of the workpiece 2 by means of the holding device 21. The gripping device 24 can thereby be removed for the bending process from the bending zone or from the working area of the press brake 1, whereby the bending process can be carried out undisturbed without the risk of collisions. Alternatively, the gripping device 24 can be activated at a different position on the workpiece 2, whereby the workpiece 2 can be supported or also tracked during the bending process.
    The advantage of the positioning method according to the invention is, on the one hand, that the workpiece edge 13 can be struck reliably against the stop surface 9 even with workpieces 2 which are less resistant to bending and further that at large distances 23 of the bending output position 22 there is no danger of a collision of the handling device 3 with the upper tool 5, since the workpiece 2 can already be transferred to the stop device 6 in the stop position 20, and in this workpiece position the gripping device 24 of the handling device 3 is still a "2010/31600" ···· "·· · ·" · I · » ··· ···· · · · · Small enough distance to work plane 14. By assigning a holding device 21 to the stop element 7, a separate handling device on the back 15 of the bending machine or press brake 1 can be omitted and the functionality of such a press brake 1 with structurally low overhead, even with regard to the automation of bending less rigid workpieces 2 can be improved ,
    Since the handling device 3 with the gripping device 24 does not have to position the workpiece 2 as far as the bending output position 22, but only supplies the workpiece edge 13 just below the lower tool 4, the workpiece 2 with the gripping device 24 can also be as central as possible to minimize the deflection 11 are detected, and thereby the laying on the lower tool 4 are facilitated.
    Fig. 3 shows the inventive method at a time at which the workpiece 2 is already positioned by means of the stop device 6 in the bending output position 22, that is, the workpiece edge 13 struck on the stop surface 9 is located at the increased distance 23 to the working plane 14, the determines the position of the bending edge on the curved workpiece 2. By the bending process, the legs of the workpiece to be bent 2 are pivoted from the horizontal starting position, in the illustrated embodiment, a pivoting upwards, since the lower tool 4 is ausgeblldet as a die and the upper tool 5 as a punch. In the case of a lower tool 4 in the form of a punch and an upper tool 5 in the form of a bending die, the pivoting of the bending legs would be down.
    In order not to hinder the pivoting movement of the workpiece 2, either the holding device 21 must be deactivated at the beginning of the actual bending process or the stop element 7 with activated holding device 21 of the bending movement of the workpiece 2 to be tracked. This second case is indicated in dashed lines in FIG. 3, wherein the bent workpiece 2 'in the region of the workpiece edge 13 is tracked with the holding device 21 activated during the bending operation. Fig. 3 shows the upper tool 5, here in the form of a punch, in a position in which the top of the workpiece 2 is just touched, ie immediately before the beginning of the bending process. In this position, in which the workpiece 2 is already slightly pressed against the lower tool 4 and it is thereby fixed, the holding device 21 can be deactivated
    N2010 / 3160Q * ··· * ♦ I I I I * 4 4 4 4 4 4------------2 Bending process released if no tracking is done by means of the stop element 7. Since, in the case of an upper tool 5 in the form of a bending die and a lower tool 4 in the form of a bending punch, the bending part of the workpiece 2 can be pivoted downwards, the tracking of the workpiece movement by the stop device 6 and / or the handling device 3 can of course also be down in this case be provided.
    In Fig. 4, the method is shown at a time in which the Anschfagelement 7, the workpiece 2 from the stop position 20 in the horizontal direction in the bending output position 22 adjusted, the holding device 21 in the example of FIG. 4 includes a forceps gripper 25 and by such is formed.
    5 shows the abutment of a workpiece 2 by means of a handling device 3 at a point in time when the workpiece 2 bent under its own weight already rests on the lower tool 4 and comes into contact with the stop surface 9 on the attachment element 7. Starting from the illustrated slope of the stop element 7, this is still raised vertically until a bearing surface 19 on the stop element 7 at the same height with a bearing surface 18 on the lower tool 4 and in this position, the Hattevorrichtung 21 here in the form of a vacuum suction 26, activated. Subsequently, the workpiece 2 is adjusted in the horizontal direction in the bending output position 22, wherein the handling device 3 with the gripping device 24 performs this movement or can also be detached from the workpiece 2 and removed from the work area.
    FIG. 6 shows a partial section through a stop element 7, in which the holding device 21 comprises an electromagnet 27. This is suitable for fixing feromagnetische workpieces 2 on the stop element 7 and to keep in the movement from the stop position 20 to the bending output position 22 in contact with the stop surface 9. The electromagnet 27 may in particular have a yoke-like iron core 28, the ends of which represent magnetic poles and at the same time form bearing surfaces 19 for the underside of the workpiece 17. By virtue of this design of the electromagnet 27, high holding forces for fixing workpieces 2 can be achieved.
    In Fig. 1, a camera 29 is further shown, which is connected to a control device 30 for the press brake 1 and for the handling device 3. In one variant of the method, the camera 29 serves, when the workpiece is fed in, to position the workpiece edge 13 in its position when it is fed into the workpiece 2 capture and based on a position correction of the handling device 3 or the stop elements perform 7,8, on the one hand to secure the feeding of the workpiece 2 between the lower tool 4 and upper tool 5 and / or already placed on the lower tool 4 workpiece 2, the stop surfaces 9,10 of the Anschiagelemente. 7 8 to position so that contact with the workpiece edge 13 can be made. In particular, for workpieces 2 which are less rigid and therefore may have large deflections 11, thereby facilitating the feeding by means of a handling device 3 and collisions of the workpiece 2 which could lead to damage can be avoided.
    By means of the method according to the invention, workpieces 2 which are less resistant to bending can also be supplied using a programmable handling device, that is to say automated, and bent by means of the stop device 6 with high accuracy.
    The embodiments show possible embodiments of the method, it being noted at this point that the invention is not limited to the specifically illustrated embodiments of the same, but rather also various combinations of the individual embodiments are mutually possible and this possibility of variation due to the teaching of technical action by representational Invention in the skill of those skilled in this technical field. It is also possible for all conceivable embodiments, which are possible by combinations of individual details of the illustrated and described embodiment variant, protection by claims directed thereto. All statements on ranges of values in the description of the present invention should be understood to include any and all sub-ranges thereof, e.g. the indication 1 to 10 is to be understood as meaning that all subsections, starting from the lower
    Limit 1 and the upper limit 10 are included, i. all subfields start f with a lower limit of 1 or greater and end at an upper limit of 10 f or less, e.g. 1 to 1.7, or 3.2 to 8.1 or 5.5 to 10. f [ΐ
    For the sake of order, it should finally be pointed out that, for better understanding of the method, this or the components or devices required for this purpose have been shown in part to be out of scale and / or enlarged and / or reduced in size. N2010 / 31600 • * ·· - 13
    The task underlying the independent inventive solutions can be taken from the description.
    Above all, the individual in Figs. 1; 2; 3; 4; 5; 6 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. N2010 / 31600 -4 k
    Reference designation 1 Press brake 2 Workpiece 3 Handling device 4 Lower tool 5 Upper tool 6 Stop device 7 Stop element 8 Stop element 9 Stop surface 10 Stop surface 11 Deflection 12 Front side 13 Workpiece edge 14 Working plane 15 Rear 16 Distance 17 Workpiece underside 18 Support surface 19 Support surface 20 Stop position 21 Holding device 22 Bend output position 23 Distance 24 Gripping device 25 Pliers gripper 26 Vacuum suction element 27 Electromagnet 28 Iron core 29 Camera 30 Control device N2010 / 31600
    权利要求:
    Claims (3)
    [1]
    1. A method for positioning a workpiece (2) on a vertically operating press brake (1) for a subsequent bending operation, comprising feeding the workpiece (2) from the front side (12) of the press brake (1) between an upper tool (2). 5) and a lower tool (4), approximating the workpiece (2) to a on the back (15) of the press brake (1) arranged abutment device (6), placing the workpiece (2) on the lower tool (4), positioning and stops a Workpiece edge (13) on at least one approximately vertically abutting abutment surface (9, 10) of an abutment element (7, 8) of the abutment device (6) and temporarily setting the workpiece (2) on the abutment element (7, 8) by activating a holding device associated therewith ( 21), characterized in that the Anschiagfläche (9,10) for abutment of the workpiece edge (13) in a Anschiagposition (20) with a small horizontal distance (16) to the lower tool (4) or vert is positioned on the working plane (14) and after the stops, the holding device (21) is activated and then the stop surface (9,10) of the stop element (7) together with the fixed workpiece (2) in a required for the start of the bending deformation bending position ( 22) is adjusted with increased horizontal distance (23) to the lower tool (4) or to the vertical working plane (14).
    [2]
    2. The method according to claim 1, characterized in that the stop surface (9, 10} after placing the workpiece (2) on the lower tool (4) in the stop position (20) is positioned.
    3. The method according to claim 1, characterized in that the abutment surface (9,10) before placing the workpiece (2) on the lower tool (4) in the An-impact position (20) is positioned.
    4. The method according to any one of claims 1 to 3, characterized in that the Anschiagfläche (9,10) in the stop position (20) at a minimum distance (16) immediately behind the lower tool (4) is positioned. N201W31600 ·· «« f ···················· ········
    5. The method according to any one of claims 1 to 4, characterized in that a bearing surface (1Θ) of the stop element (7,8) before the abutment of the workpiece (2) viewed in the vertical direction in a relative to a support surface (18) of the lower tool ( 4) lower lying waiting position is positioned and before setting the workpiece (2) in a with the support surface (18) of the lower tool (4) coinciding height position is spent.
    6. The method according to any one of claims 1 to 5, characterized in that the means of the stop element (7,8) in the bending output position (22) spent workpiece (2) before the subsequent bending operation by means of the upper tool (5) on the lower tool (4). is clamped and then the holding device (21) is deactivated.
    7. The method according to any one of claims 1 to 5, characterized in that the stop element (7, 8) with activated holding device (21) tracks the workpiece (2) during the subsequent bending process.
    8. The method according to any one of claims 1 to 7, characterized in that the workpiece (2) by means of a programmable and a gripping device (24) having handling device (3) is moved to the stop position (20).
    A method according to claim 8, characterized in that the gripping device (24) is deactivated after setting of the workpiece (2) on the stop element (7, 8) in the stop position (20) and the handling device (3) is released from the bending zone is spent.
    10. The method according to any one of claims 1 to 9, characterized in that the workpiece edge (13) when approaching the stop element (7, 8) is detected in position and based on the detected position before the attacks, if necessary, the stop element (7, 8) and / or a workpiece (2) carrying handling device (3) is corrected in his or her position. N2010 / 31600 ·································································.
    [3]
    11. The method according to claim 10, characterized in that the position determination of the workpiece edge (13) takes place without contact, in particular optically by means of a camera. 12. The method according to any one of claims 1 to 11, characterized in that the setting of the workpiece (2) on the stop element (7, 8) by means of Haltevor-direction (21) by a vacuum suction (26 ) Or a pliers gripper (25) or an electromagnet (27 ). 13. The method according to any one of claims 1 to 12, characterized in that with the handling device (3) cooperating control device a deflection (11) of the handling device (3) held workpiece (2) approximately calculated and the feeding of the workpiece (2 ) by means of the handling device (3) taking into account the calculated deflection (11). TRUMPF Maschinen Austria GmbH & Co. KG. by

    Lawyer rtner right N2010 / 31600
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    同族专利:
    公开号 | 公开日
    AT510689B1|2012-06-15|
    WO2012119175A1|2012-09-13|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4357821A|1980-08-11|1982-11-09|Fowler Joseph M|Gauge and workpiece holder for a forming machine|
    EP1681111A1|2002-05-13|2006-07-19|Trumpf Maschinen Austria GmbH & CO. KG.|Manufacturing device, in particular bending press, and method for operating said manufacturing device|
    WO2008011648A1|2006-07-25|2008-01-31|Trumpf Maschinen Austria Gmbh & Co. Kg.|Stop mechanism for a bending press|
    US2429387A|1944-11-18|1947-10-21|Hercules Electric & Mfg Co Inc|Metal-working machine|
    DE9315209U1|1993-10-08|1995-02-16|Trumpf Gmbh & Co|Press brake|
    DE102005026727B3|2005-06-09|2006-10-12|Heinz Wotke Ges.M.B.H.|Machine working sheet metal by bending, edge-folding and rounding-off, includes upper and lower bending roller tools constructed from roller modules|
    ITTO20050705A1|2005-10-07|2007-04-08|Crea Srl|PRESS BRAKE FOR SHEET PIECES WITH MANIPULATOR INTEGRATED IN A REAR POSITIONING DEVICE|AT514930B1|2013-12-04|2015-05-15|Trumpf Maschinen Austria Gmbh|Backgauge unit for bending machine|
    AT520649B1|2018-05-07|2019-06-15|Trumpf Maschinen Austria Gmbh & Co Kg|Method with a production device for forming sheet metal|
    CN109261757B|2018-09-23|2021-11-09|深圳市骏昊自动化科技有限公司|Bending large-angle method of automatic knife bending machine|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    AT2982011A|AT510689B1|2011-03-07|2011-03-07|METHOD FOR POSITIONING A WORKPIECE ON A PUSHING PRESSURE|AT2982011A| AT510689B1|2011-03-07|2011-03-07|METHOD FOR POSITIONING A WORKPIECE ON A PUSHING PRESSURE|
    PCT/AT2012/050030| WO2012119175A1|2011-03-07|2012-03-07|Method for positioning a workpiece at a press brake|
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