Tool and method for machining a plate-shaped workpiece

Abstract

The invention relates to a tool and a method for machining a plate-shaped workpiece (10), in particular a sheet, the tool having an upper tool (11) and having a lower tool (9), the upper tool and the lower tool being movable toward one another for the purpose of machining the workpiece (10) arranged between the upper tool and the lower tool, the upper tool (11) having a clamping shank (34) and a body (33) arranged on a common position axis (35) and comprising a machining tool (37) arranged on the body (33) opposite the clamping shank (34), and the lower tool (9) having a body (41) comprising a support surface (47) for the workpiece (10) and an opening (46) within the support surface (47), the machining tool (37) of the upper tool (11) having at least one curved edge (45) and at least one cutting edge (38), and the body (41) of the lower tool (9) having at least one counter curved edge (52) and at least one counter cutting edge (51).

Description

Technical Field

[0001] This invention relates to a tool and method for processing plate-shaped workpieces, especially sheet metal. Background Technology

[0002] A machine tool is known from DE 10 2016 119 435 A1, which discloses a tool for manufacturing plate-shaped workpieces, particularly sheet metal. The tool is operated by the machine tool for stamping and blanking. The tool includes an upper tool that is movable along a stroke axis to the workpiece by means of a stroke drive and in the opposite direction, and is movable along an upper positioning axis by means of a drive assembly. Furthermore, a lower tool is provided, oriented relative to the upper tool and movable along a lower stroke axis towards the upper tool by means of a stroke drive, and is positioned along a lower positioning axis perpendicular to the positioning axis of the upper tool. The drive assembly is operated by means of a control device for moving the upper and lower tools. The upper tool includes a machining tool inclined relative to the positioning axis of the upper tool. Two cutting edges oriented parallel to each other are provided on the machining tool for, for example, separating bent sheet metal pieces or creating sides inclined relative to the plane of the plate-shaped workpiece.

[0003] Furthermore, a tool for machining plate-shaped workpieces is known from JP 2000-153 321A1. The upper tool includes a machining tool with inclined cutting edges. The lower tool includes an opening in which mating cutting edges offset downward relative to a support surface are provided. During the working stroke of the upper tool relative to the lower tool, the separation process first occurs on the front cutting edge of the machining tool. The tab is cut out and bent, and in a further separation stroke, it is cut off on the cutting edge located in the opening of the lower tool. Bending and stamping are performed in one stroke, wherein the machined workpiece remains on the plate-shaped workpiece.

[0004] A stamping and bending tool is known from WO 2011 / 148393 A1, in which sheet material is first punched out during the working stroke of the upper tool moving toward the lower tool, and the workpiece is simultaneously bent during further stamping. Summary of the Invention

[0005] The objective of this invention is to provide a tool and method for processing plate-shaped workpieces, thereby improving the flexibility of processing plate-shaped workpieces.

[0006] This task is solved by a tool for processing plate-shaped workpieces, wherein the upper tool has at least one bending edge and at least one cutting edge, and the body of the lower tool has at least one paired bending edge and at least one paired cutting edge. Thus, for example, in the first processing step, a workpiece portion, preferably a sheet-like cut-out portion, can be processed by a bending stroke, wherein the degree of folding can be influenced by the stroke movement between the upper and lower tools. One or more folded portions can be introduced into the workpiece portion by one or more successive stroke movements. To separate the workpiece portion from the plate-shaped material, the same tool can be used as for producing folds or bends. Here, the cutting edge of the upper tool and the paired cutting edge of the lower tool are oriented relative to each other, and the plate-shaped material is transferred to a separation position, such that the workpiece portion is subsequently separated from the plate-shaped workpiece by a separation stroke. Here, the cut-off workpiece portion can be a finished portion or a scrap portion. With this tool, bending and stamping processes can be achieved without changing tools simply by manipulating the position axes of the upper and lower tools and aligning the position axes of the upper and lower tools with each other.

[0007] The cutting edges and bending edges are preferably constructed relatively separately on the machining tool, or more preferably on the same machining tool. This results in a relatively large bending width and support width.

[0008] Furthermore, the cutting and bending edges on the upper tool are preferably parallel to each other and oriented perpendicular to the positioning axis. This allows for easy manipulation of the upper tool relative to the lower tool for bending, stamping, or cutting processes.

[0009] The cutting edges and bending edges on the machining tool are preferably located in the same plane and constructed perpendicular to the position axis. This also enables the simple manufacture of such machining tools.

[0010] The cutting and bending edges are advantageously confined to the punch face on the machining tool, which is preferably oriented perpendicular to the position axis. This provides support during bending and stamping processes.

[0011] Furthermore, the curved edge can be constructed to extend perpendicularly to the position axis, and the cutting edge can be oriented at an angle relative to the position axis. This allows for control of the cutting process in which the workpiece portion is completely separated from the plate-like material only with increasing insertion depth.

[0012] An advantageous configuration of the curved edge on the machining tool includes an inclined surface extending from the curved edge toward the body, the inclined surface being inclined toward the position axis. The inclined surface is preferably oriented at an angle of less than 90° relative to the punch face of the machining tool. This allows for the formation of a curved edge with a side cut. This curved edge can achieve over-bending after a 90° fold in the workpiece portion, in order to, for example, compensate for the springback effect, so that a 90° fold is obtained after the springback effect has already occurred.

[0013] One advantageous embodiment of the tool is configured such that the curved edges and cutting edges of the upper tool are oriented within a projection plane perpendicular to the position axis and formed by the body when viewed in the travel direction. Alternatively, at least the curved edges or cutting edges of the upper tool may be located outside the projection plane formed by the body when viewed in the travel direction perpendicular to the position axis. In a first embodiment, the height of the folded portion is determined by the distance between the curved edges and the body. In a second alternative embodiment, if the curved edges are located outside the projection plane, the height of the folded portion may be greater than the distance between the curved edges and the body.

[0014] A clamping element is preferably provided on the body of the upper tool, the machining tool extends between these clamping elements, and the machining tool can be extended relative to these clamping elements. Preferably, the clamping elements extend in height to the cutting edge and the curved edge of the machining tool. Alternatively, at least one clamping element may extend beyond the curved edge and the cutting edge of the machining tool. This causes the curved edge and the cutting edge to retract relative to the end face of the clamping element. The length of at least one clamping element may extend at least partially along the cutting edge and / or the curved edge. Preferably, at least one clamping element extends almost or completely along the length of the curved edge and / or the cutting edge. The clamping elements are preferably constructed to be elastically flexible. These clamping elements are used to reliably position the plate-shaped workpiece on the support surface of the lower tool when the curved edges are guided toward and at least partially past each other relative to the mating curved edges. A similar situation applies to the cutting edges and mating cutting edges of the upper and lower tools in the case of a separate stroke.

[0015] Another advantageous configuration of the tool involves fixedly providing paired curved edges and / or paired cutting edges at the opening of the support surface of the lower tool body. This allows for a simple structural design. Alternatively, the paired curved edges and / or paired cutting edges can be fixedly provided on the base of the lower tool, wherein the opening of the support surface is oriented adjacent to and / or flush with the paired curved edges and / or paired cutting edges and is movable relative to the base.

[0016] At least one paired curved edge and / or at least one paired cutting edge are disposed in an opening in the support surface of the lower tool body and / or adjacent to the support surface of the body. If, for example, only small workpieces are being manufactured, it is advantageous to have at least one paired curved edge and at least one paired cutting edge disposed in the opening in the support surface. This minimizes the displacement movement between the upper and lower tools. The cut workpiece portion can be discharged downwards through the opening in the lower tool. If larger or wider plate-shaped workpieces are to be machined, the paired curved edge and / or paired cutting edge can be disposed outside the support surface but adjacent to it to perform the machining operation. After the separation stroke, the machined workpiece portion can be discharged through a discharge valve in the workpiece support of the machine tool.

[0017] The objective of this invention is preferably achieved through a method for processing plate-shaped workpieces, in which a tool according to one of the above embodiments is used, and the workpiece portion of the plate-shaped workpiece (which may be configured as a piece-shaped cut-out portion) is positioned relative to the support surface of the lower tool, and the bending edges on the upper tool and the mating bending edges on the lower tool are oriented relative to each other, and at least one bending stroke movement is manipulated, during which the workpiece portion is bent relative to the plate-shaped workpiece, and during this at least one stroke movement, the bent workpiece portion and / or the cutting edges of the upper tool and the mating cutting edges of the lower tool are transferred to a separation position so that a separation stroke is subsequently performed, by which the workpiece portion is cut off. Therefore, a rapid process sequence can be performed when bending and separating the workpiece into plate-shaped workpieces. This eliminates the non-productive time of changing the tool from the bending tool to the stamping tool. The risk of scratches on the components and parts jamming is also reduced due to the reduced positioning of the deformed plate block.

[0018] Furthermore, preferably, the orientation of the curved or cutting edge of the upper tool relative to the paired curved or cutting edge of the lower tool is controlled by rotational motion and / or by displacement motion along the upper and / or lower positioning axes. In particular, the displacement motion of the upper and / or lower tools in the Y direction is controlled. This enables rapid feed motion and orientation of the upper and lower tools for subsequent machining processes.

[0019] Another advantageous configuration of the method involves performing a stroke movement along the stroke axis of the upper and lower tools during the bending stroke movement between the upper and lower tools, or a stroke movement located outside the stroke axis of the upper and lower tools additionally superimposed on the stroke movement along the stroke axis. The quality of the bent edges on the workpiece's visual appearance and excessive bending can be affected by the displacement movement.

[0020] When the width of the workpiece to be processed is smaller than the opening in the support surface of the lower tool, the separation position between the upper and lower tools is manipulated so that the cutting edge of the upper tool is oriented relative to the matching cutting edge at the opening of the lower tool. This allows for simple downward discharge via the lower tool after separation.

[0021] If the portion of the workpiece to be processed has a width greater than the opening in the support surface of the lower tool, a separation position is manipulated in which at least one cutting edge of the upper tool is oriented relative to a mating cutting edge on the lower tool, which is positioned outside the support surface. This allows for the processing of larger workpieces using a tool that can both be bent and stamped.

[0022] Furthermore, advantageously, for the separation stroke, the cutting edges of the upper tool and the mating cutting edges of the lower tool are oriented relative to each other according to the corresponding material thickness of the workpiece portion. This allows for the processing of different material thicknesses in the same manner using the same tool, and enables separate control to perform the optimal separation stroke.

[0023] Furthermore, advantageously, for the bending stroke, the bending edges of the upper tool and the paired bending edges of the lower tool are oriented relative to each other according to the corresponding material thickness of the workpiece portion. This allows for high bending quality. Moreover, various thicknesses of workpiece portions can be machined using the same tools in the same manner. Attached Figure Description

[0024] The invention and its other advantageous embodiments and extensions are described and illustrated in detail below with reference to the examples shown in the accompanying drawings. According to the invention, features obtainable from the specification and drawings can be used individually or in any combination of multiple features. The drawings show:

[0025] Figure 1 A three-dimensional view of the machine tool.

[0026] Figure 2 Used according to Figure 1 A three-dimensional view of the machine tool's tools.

[0027] Figure 3 according to Figure 2 A schematic cross-sectional view of the tool.

[0028] Figure 4 according to Figure 2 A diagram showing the tool from below.

[0029] Figure 5 According to Figure 2 An alternative implementation of the tool,

[0030] Figure 6 In order to use according to Figure 2 A plate-shaped workpiece prepared by processing with tools.

[0031] Figures 7 to 9 Used to illustrate by means of Figure 2 Tools based on Figure 6 A schematic side view of a workpiece undergoing pivot-bending processing.

[0032] Figures 10 to 12 Used to show the basis Figures 7 to 9 A schematic side view of a pre-machined workpiece undergoing stamping.

[0033] Figure 13 Prior to pivoting-bending processing Figure 2 A schematic side view of an alternative implementation of the tool.

[0034] Figure 14 According to the stamping process before Figure 13 A schematic side view of an alternative implementation of the tool.

[0035] Figure 15 right Figure 13 A perspective view of another alternative implementation of the tool.

[0036] Figure 16 Before the pivot-bending process of the workpiece section, according to Figure 15 A schematic side view of the tool, and

[0037] Figure 17 Before the stamping process of the workpiece part, according to Figure 15 A schematic side view of the tool. Detailed Implementation

[0038] Figure 1 A machine tool 1, configured as a stamping and bending machine, is shown. The machine tool 1 includes a support structure with a closed frame 2. The frame includes two horizontal frame supports 3 and 4 and two vertical frame supports 5 and 6. The frame 2 encloses an internal frame space 7, which, together with an upper tool 11 and a lower tool 9, forms the working area of ​​the machine tool 1.

[0039] Machine tool 1 is used to process plate-shaped workpiece 10, which, for simplicity, is... Figure 1 The workpiece 10, not shown, is arranged in the internal space 7 of the frame for processing purposes. The workpiece 10 to be processed is placed on the workpiece support 8 provided in the internal space 7 of the frame. A lower tool 9 is supported on the horizontal frame support 4 below the frame 2 in the notch of the workpiece support 8.

[0040] The upper tool 11 is fixed in the tool receiving section at the lower end of the push rod 12. The push rod 12 is part of the stroke drive device 13, by means of which the upper tool 11 can move in the stroke direction along the upper tool stroke axis 14. The upper tool stroke axis 14 is located on the machine tool 1. Figure 1 The coordinate system of the digital control device 15 shown extends in the Z-axis direction. The stroke drive device 13 can move perpendicularly to the upper tool stroke axis 14 along the upper positioning axis 16 in the direction of the double arrow. The upper positioning axis 16 extends in the Y-direction of the coordinate system of the digital control device 15. The stroke drive device 13 receiving the upper tool 11 moves along the upper positioning axis 16 by means of a motor-type first drive assembly 17.

[0041] The movement of the push rod 12 along the upper tool stroke axis 14 and the positioning of the stroke drive device 13 along the upper positioning axis 16 are achieved by means of a motor-type first drive assembly 17, particularly a spindle drive assembly, having a drive spindle 18, which extends in the direction of the upper positioning axis 16 and is fixedly connected to the frame 2. During movement along the upper positioning axis 16, the stroke drive device 13 is guided on three guide rails 19 of the upper frame support 3. Figure 1 Two guide rails 19 are visible. A remaining guide rail 19 extends parallel to the visible guide rail 19 and is spaced apart from it in the X-axis direction of the coordinate system of the digital control device 15. The guide shoe 20 of the stroke drive 13 extends on the guide rail 19. The engagement of the guide rail 19 and the guide shoe 20 is configured such that the connection between the guide rail 19 and the guide shoe 20 can also withstand loads acting in the vertical direction. The stroke device 13 is correspondingly suspended on the frame 2 via the guide shoe 20 and the guide rail 19. Another component of the stroke drive 13 is a wedge drive mechanism 21, through which the position of the upper tool 11 relative to the lower tool 9 can be adjusted.

[0042] The lower tool 9 is movably received along the lower positioning axis 25. This lower positioning axis 25 extends in the Y-axis direction of the coordinate system of the digital control device 15. The lower positioning axis 25 is preferably oriented parallel to the upper positioning axis 16. The lower tool 9 can move directly along the lower positioning axis 25 by means of a motor-driven second drive assembly 26. Alternatively or supplementarily, the lower tool 9 can also be mounted on a stroke drive device 27, which is movable along the lower positioning axis 25 by means of a motor-driven second drive assembly 26. This second drive assembly 26 is preferably configured as a spindle drive assembly. The lower stroke drive device 27 can structurally correspond to the upper stroke drive device 13. The motor-driven second drive assembly 26 can also correspond to the motor-driven first drive assembly 17.

[0043] The lower stroke drive 27 is also movably supported on the guide rail 19, which is associated with the lower horizontal frame support 4. The guide shoe 20 of the lower stroke drive 27 runs on the guide rail 19, allowing the connection between the guide rail 19 and the guide shoe 20 on the lower tool 9 to withstand loads acting in the vertical direction. Correspondingly, the lower stroke drive 27 is also suspended on the frame 2 via the guide shoe 20 and the guide rail 19 and is spaced apart from the guide rail 19 and guide shoe 20 of the upper stroke drive 13. The lower stroke drive 27 may also include a wedge drive mechanism 21, through which the position or height of the lower tool 9 along the Z-axis is adjustable.

[0044] exist Figure 2 The image shows a perspective view of tool 31. Figure 3 It shows that according to Figure 2 A schematic cross-sectional view of tool 31. Tool 31 is constructed as a bending-stamping tool. Tool 31 includes a bending-stamping head constituting upper tool 11 and a bending-stamping die constituting lower tool 9. Upper tool 11 includes upper tool body 33 having a clamping shank 34 and a calibration or indexing element, or calibration or indexing wedge 36. The clamping shank 34 is used to fix upper tool 11 in a tool receiving portion above the machine tool side. Here, the orientation of upper tool 11, or the rotational position of upper tool 11, is determined by the indexing wedge 36. Here, upper tool 11 rotates about a position axis 35. This position axis 35 constitutes the longitudinal axis of the clamping shank 34 and preferably also constitutes the longitudinal axis of the upper tool body 33. The orientation of the machining tool 37 of upper tool 11 is achieved by upper tool 11 occupying a rotational position in the upper tool receiving portion.

[0045] The lower tool 9 also includes a lower tool body 41, which is adapted to be fixed in a tool receiving section below the machine tool side in a defined rotational position, for example, by at least one indexing element 42. Here, the lower tool 9 can rotate about a position axis 48. This position axis constitutes the longitudinal axis or longitudinal center axis of the lower tool body 41.

[0046] The lower tool 9 has an opening 46 in the lower tool body 41, which is preferably defined by a surrounding support surface 47. The opening 46 preferably extends completely through the lower tool body 41, so that the punched or cut-off portion of the workpiece 81 can be discharged through the opening.

[0047] The machining tool 37 on the upper tool 11 includes at least one cutting edge 38 and at least one bending edge 45. The machining tool 37 has a punch face 43 at its end. This punch face 43 is bounded in one direction by the cutting edge 38 and in the opposite direction by the bending edge 45. The cutting edge 38 and the bending edge 45 are preferably oriented parallel to each other. The cutting edge 38 and the bending edge 45 are preferably located in a common plane perpendicular to the position axis 35. The punch face 43 defines the tool body 39 with a rectangular geometry.

[0048] The curved edge 45 connects to the punch face 43 on one side and the inclined surface 49 on the other. The inclined surface 49 is constructed at an angle of less than 90° relative to the punch face 43. The bending radius of the curved edge 45 can be selected according to the bending radius to be manufactured.

[0049] For example, the lower tool 9, including opening 46, has an internally located mating cutting edge 51 adjacent to the support surface 47. This opening 46 is preferably constructed as a square or rectangular shape. At least one additional side edge of opening 46 can be constructed as a mating curved edge 52. Preferably, one mating cutting edge 51 and two or more mating curved edges 52 are provided, wherein the additional mating curved edges 52 may each have a different radius than each other. In addition to square or rectangular openings, polygonal openings can also be used to allow the use of additional mating cutting edges or mating curved edges. This provides increased flexibility for the tool 31. Furthermore, one or more additional mating cutting edges can be provided so that they can be used if the first mating cutting edge becomes unusable, for example, due to wear.

[0050] A stamping surface 56 is disposed adjacent to the mating cutting edge 51 located inside. This stamping surface is configured to be parallel to the longitudinal axis 40 of the tool body 39, or slightly inclined relative to the longitudinal axis, so as to enable the workpiece portion 81 to be separated from the workpiece 10 with high cutting quality.

[0051] A clamping element 71 is provided laterally adjacent to the tool body 39. This clamping element 71 is preferably replaceably mounted on the upper tool body 33 of the upper tool 11. The clamping element 71 is elastically flexible. A thermoplastic elastomer, particularly PU, is preferably used to form the clamping element 71. Other rubber elastic materials can be used, especially materials suitable for processing sheet-like materials when lubricated or oiled. The clamping element 71 preferably has an end face 72. This end face 72 is preferably oriented parallel to the punch face 43. The lateral distance between the clamping element 71 and the processing tool 37 is determined such that the clamping element 71 can be compressed when supported on the lower tool 9, while still being able to control the depth of the processing tool 37's depression. This allows for control of excessive bending on the workpiece portion 81, and also allows control of the processing tool 37, particularly the bent edge 45, relative to the mating bent edge 52 on the lower tool 9.

[0052] exist Figure 4 According to Figure 2 The diagram shows the upper tool 11 as seen from below. The length of the clamping element 71 corresponds to the length of the machining tool 37. The length of the clamping element 71 can be configured to be greater than the length of the machining tool 37, such that the end face 72 of the clamping element 71 protrudes relative to the punch face 43. Alternatively, the length of the clamping element 71 can also be shorter than the length of the machining tool 37.

[0053] In some applications, the length of the clamping element 71 is equal to the length of the machining tool 37.

[0054] Figure 5 Showing the Figure 2A perspective view of an alternative embodiment of the lower tool 9. In this embodiment, a mating cutting edge 51 is provided, for example, outside the support surface 47, on the lower tool body 41 of the lower tool 9. The mating cutting edge 51 can preferably be connected to the lower tool 9 on a separate component by a threaded connection. This arrangement allows the mating cutting edge 51 to be constructed to have a greater width than the mating cutting edge 51 in the opening 46 defined by the outer periphery of the support surface 47. Alternatively, similar to the mating cutting edge 51, a mating curved edge 52 can also be provided outside the support surface 47. For example, such a mating curved edge 52 can be oriented opposite to the mating cutting edge 51 relative to the lower tool body 41. If the mating cutting edge 51 and / or the mating curved edge 52 are provided outside the support surface 47 of the lower tool 9, the opening 46 can be eliminated. Even if at least one mating cutting edge 51 and / or mating curved edge 52 is provided on the outside, the opening 46 can preferably be constructed with at least one mating cutting edge 51 and at least one mating curved edge 52. Compared to using paired cutting edges 51 and / or paired bending edges 52 provided in the opening 46, it is possible to bend and cut off a wider workpiece portion 81 by using paired cutting edges 51 and / or paired bending edges 52 arranged outside the support surface 47.

[0055] Figure 6 A simplified perspective view of a plate-shaped workpiece 10 is shown, the workpiece including a workpiece portion 81. This workpiece portion 81 is shown, for example, as a piece-shaped cut-out portion. The workpiece 10 may be manufactured in a preliminary processing step by laser cutting and / or by stamping, so that the workpiece portion 81 can subsequently be bent and / or stamped. Here, the workpiece portion 81 may be a finished portion. Alternatively, the workpiece portion 81 may also be a scrap portion, such that the plate-shaped workpiece 10 exists as a semi-finished product or a finished workpiece.

[0056] exist Figures 7 to 9 The diagram shows the bending-stamping process performed in each step using tool 31. Figure 7 The upper tool 11, shown in cross-section, is in its initial position relative to the lower tool 9. The workpiece 10 is supported on the support surface 47 of the lower tool 9. Here, the workpiece portion 81 is oriented for subsequent machining steps, that is, the length of the workpiece portion 81, or the piece-shaped cut portion, is oriented relative to the paired bent edges 52 on the lower tool 9, such that the workpiece portion 81 is deformed by bending or folding the edge 62.

[0057] In the first working step, the upper tool 11 moves towards the lower tool 9 along the upper tool stroke axis 14, or position axis 35. The punch face 43 is supported on the workpiece portion 81. Simultaneously, the end face 72 of the clamping element 71 is supported on the workpiece portion 81, or workpiece 10, and fixes the workpiece portion, or workpiece, relative to the support surface 47 of the lower tool 9. Figure 8 During further exercise, such as in Figure 9 As shown, the curved edge 45 is guided from the mating curved edge 52, thereby performing the first modification of the workpiece portion 81. The stroke of the upper tool 11 can be further performed to transfer the machining tool 37 to... Figure 9 In the position shown. Alternatively, the return stroke of the upper tool 11 can be manipulated again to subsequently manipulate another stroke of the lower tool 9, thereby changing the spacing between position axes 35 and 48. This depends on the radius to be formed for the bend 62.

[0058] According to Figure 9 During the stroke, the bending portion 62 can be further bent, so that a 90° angle is formed between the workpiece 10 and the workpiece portion 81.

[0059] If the workpiece portion 81 is to have excessive bending relative to the workpiece 10, i.e., if the bending angle is to be controlled to be greater than 90°, then the lateral displacement movement, especially in the Y direction, is additionally superimposed on the stroke movement of the upper tool 11. The displacement movement of the lower tool 9 along the lower positioning axis 25 can also be controlled, either alone or additionally. Through the inclined surface 49 on the machining tool 37, the bent edge 45 can engage with the mating bent edge 52, thus achieving excessive bending. This can be controlled to such an extent that after the machining tool 37 is withdrawn from the opening 46 of the lower tool 9, the bent portion 62 springs back to a 90° angle.

[0060] Subsequently, for example, Figures 10 to 12 The separation process is controlled as shown. Here, from the... Figure 9 The bending position is used to initiate a displacement movement to position the upper tool 11 above the lower tool 9 at a certain distance. Subsequently, or simultaneously, the rotational movement of the lower tool 9 is manipulated so that the mating cutting edges 51 of the opening 46 are oriented relative to the cutting point of the workpiece portion 81. The workpiece 10 can also be moved in the X / Y plane to a position for the separation stroke. The upper tool 11 can be held in its position or can be manipulated to orient the cutting edges 38 relative to the mating cutting edges 51 of the lower tool 9. This rotation of the upper tool and / or the lower tool 9 depends on the number and arrangement of the mating cutting edges 51 in the opening 46 and / or their orientation relative to the workpiece portion 81 to be cut. A similar situation applies to the mating cutting edges 52, which, according to... Figure 5In an alternative embodiment, the lower tool 9 is located outside the support surface 47. The upper tool 11 is then manipulated for a separation stroke to separate the workpiece portion 81 by guiding it from the mating cutting edge 51 via the cutting edge 38. Before the workpiece portion 81 is cut off from the workpiece 10, the end face 72 of the clamping element 71 is preferably located on the workpiece 10, such that the workpiece remains fixed relative to the support surface 47 of the lower tool 9. Figure 11 Subsequently, through further travel motion, workpiece portion 81 is separated from workpiece 10, as cutting edge 38 and mating cutting edge 51 are guided from each other, as in Figure 12 As shown, the workpiece portion 81 can be discharged downwards through the opening 46 of the lower tool 9. Subsequently, the upper tool 11 and the lower tool 9 are moved back to their initial positions or to positions for subsequent work steps.

[0061] Figure 13 Showing the Figure 2 A schematic side view of an alternative implementation of tool 31. According to Figure 13 The tool 11 is corresponding in structure and implementation to the method according to Figure 2 The tool 11 is different in that only one clamping element 71 is provided. The clamping element 71 is preferably associated with the cutting edge 38. Alternatively, the clamping element 71 may be associated only with the bending edge 45, and no clamping element 71 may be positioned relative to the cutting edge 38.

[0062] according to Figure 13 The following tools 9 and according to Figure 2 The lower tool 9 is constructed differently. The lower tool body 41 receives the base 53, which is fixedly connected to the lower tool body 41. A mating curved edge 52 is provided on the base 53. Another mating curved edge or a mating cutting edge 51 can be provided opposite to the mating curved edge 52. The base 53 having the mating curved edge 52 and / or the mating cutting edge 51 can be interchangeably provided on the lower tool body 41. The mating curved edge 52 and the mating cutting edge 51 are spaced apart from each other by the punch face 54.

[0063] The support surface 47 is received on the lower tool body 41, movable in the opposite direction to the mating bent edge 52 and mating cutting edge 51. An opening 46 is provided in the support surface 47, surrounding the punch surface 54. A resiliently flexible reset element 55 is preferably provided between the support surface 47 and the lower tool body 41. After the support surface 47 is loaded due to displacement towards the lower tool body 41, the support surface 47 can return to its initial position, as shown in… Figure 13As shown in the diagram. Advantageously, a guide element 57 can be provided, by which the support surface 47 is guided vertically relative to the lower tool body 41. For example, only one guide element is shown, but preferably multiple guide elements are evenly distributed around the periphery.

[0064] Before the pivoting-bending motion begins, the upper tool 11 is positioned in its initial position relative to the lower tool 9. This pivoting-bending motion can be analogous to... Figures 7 to 9 Perform as described. Refer directly to the accompanying drawings for details.

[0065] exist Figure 14 According to Figure 13 A schematic side view of tool 31. The upper tool 11 is positioned relative to the lower tool 9 in an initial position for separating the stroke. This position can be manipulated, for example, by displacement movement of the upper tool 11 and / or the lower tool 9 along the upper positioning axis 16 and / or the lower positioning axis 25. Subsequently, as for... Figures 10 to 12 As described, the separation stroke used for stamping can be controlled. Refer to the full description for further details.

[0066] exist Figure 15 The middle shows the Figure 2 and 13 A perspective view of an alternative implementation of tool 31. Figure 16 It shows the process prior to pivoting-bending motion processing according to Figure 15 A schematic side view of tool 31. Figure 17 A schematic side view of tool 31 is shown before the separation stroke.

[0067] according to Figure 15 The tool 31 has a machining tool 37, which includes a cutting edge 38 and a bending edge 45. The cutting edge and the bending edge are preferably oriented parallel to each other and, in particular, located in a common plane. A punch face 43 is formed between the bending edge 45 and the cutting edge 38.

[0068] In this embodiment, at least the curved edge 45 is located outside the projection plane, which is perpendicular to the position axis 35 and formed by the upper tool body 33 when viewed in the stroke direction. The cutting edge 38 may be located inside or outside the projection plane. In this embodiment, the cutting edge 38 is provided with a clamping element 71. The curved edge 45 is provided without the clamping element 71. The end face 72 of the clamping element 71 is preferably located in the plane of the punch face 43. The end face 72 of the clamping element 71 may also protrude slightly relative to the punch face 43 in the stroke direction. The clamping element 71 is also constructed to be elastically flexible. Other configuration possibilities of the clamping element 71 listed in the above embodiments are also applicable to [the embodiment described above]. Figures 15 to 17 Tool 31.

[0069] according to Figures 15 to 17 The lower tool 9 is structurally corresponding to the one based on Figures 13 to 14 The following tool 9 allows you to refer to the above content for details.

[0070] exist Figure 16 The diagram shows the initial position for pivoting and bending workpiece 10. The upper tool 11 is oriented relative to the lower tool 9 such that the bent edge 45 is fitted with the mating bent edge 52. After the pivoting and bending process is performed, the upper tool 11 and / or the lower tool 9 can be moved relative to each other along the upper positioning axis 16 and / or the lower positioning axis 25, such that the position is... Figure 17 The working position is as follows. Here, the cutting edge 38 is oriented relative to the mating cutting edge 51 of the lower tool 9. From this working position, a separation stroke for punching the workpiece portion 81 out of the workpiece 10 can be achieved, as in accordance with... Figures 10 to 12 As described in the implementation method.

Claims

1. A tool for machining a plate-shaped workpiece (10), the tool having an upper tool (11) and a lower tool (9), the upper and lower tools being movable toward each other for machining the workpiece (10) arranged therebetween. -in, The upper tool (11) has a clamping shank (34) and an upper tool body (33) arranged in a common position axis (35) and includes a machining tool (37) arranged on the upper tool body (33) opposite to the clamping shank (34). -in, The lower tool (9) has a lower tool body (41), which includes a support surface (47) for the workpiece (10) and an opening (46) located in the support surface (47). Its features are, The machining tool (37) of the upper tool (11) has at least one curved edge (45) and at least one cutting edge (38), the curved edge (45) and the cutting edge (38) defining the punch face on the machining tool (37), the machining tool (37) being cuboid in shape and having a notch, the notch forming an inclined surface (49) of the machining tool (37) that engages with the curved edge, the inclined surface (49) forming an angle of less than 90° with respect to the punch face (43), and - The lower tool body (41) of the lower tool (9) has at least one paired curved edge (52) and at least one paired cutting edge (51).

2. The tool according to claim 1, characterized in that, The cutting edge (38) and the bending edge (45) are constructed on the machining tool (37) separately from each other; and / or The punch face (43) has a rectangular shape, one long side of the rectangular strip forms a curved edge, and the other long side of the rectangular strip opposite to the one long side forms a cut edge; and / or The upper tool can be moved along the upper tool stroke axis (14) towards the workpiece (10) to be processed by the upper tool (11) and in the opposite direction by means of the stroke drive device (13), and can be positioned along a positioning axis (16) extending above the upper tool stroke axis (14) perpendicular to the upper tool stroke axis (14), and the lower tool can be positioned along a positioning axis (25) oriented below the upper tool stroke axis (14) perpendicular to the upper tool stroke axis (14) of the upper tool (11); and / or The upper tool is rotatable about a position axis to orient the machining tool, and the lower tool has an opening with a polygonal shape and at least one paired cutting edge and at least two paired bending edges, the at least two paired bending edges having different radii.

3. The tool according to claim 1 or 2, characterized in that, The cutting edge (38) and the bending edge (45) are arranged on the machining tool (37) at opposite intervals relative to the position axis (35).

4. The tool according to claim 1 or 2, characterized in that, The cut edge (38) and the curved edge (45) extend parallel to each other and are oriented perpendicular to the position axis (35).

5. The tool according to claim 1 or 2, characterized in that, The punch surface is oriented perpendicular to the position axis (35).

6. The tool according to claim 1 or 2, characterized in that, The curved edge (45) of the machining tool (37) is constructed to extend perpendicularly to the position axis (35), and the cutting edge (38) is spaced parallel to the curved edge (45), but is oriented at an angle relative to the position axis (35).

7. The tool according to claim 1 or 2, characterized in that, The inclined surface (49) is oriented toward the upper tool body (33) of the upper tool (11) and extends obliquely to the curved edge (45) of the machining tool (37) relative to the position axis (35).

8. The tool according to claim 1 or 2, characterized in that, The curved edge (45) and the cutting edge (38) of the upper tool (11) are oriented in a projection plane that is perpendicular to the position axis (35) and formed by the upper tool body (33) of the upper tool (11) when viewed in the travel direction, or at least the curved edge (45) or the cutting edge (38) of the upper tool (11) is located outside the projection plane.

9. The tool according to claim 1 or 2, characterized in that, At least one clamping element (71) is provided on the upper tool body (33) of the upper tool (11), which extends at least partially along the machining tool (37); The upper tool body (33) includes a flange connected to the processing tool (37), and the clamping element is fixed on the flange.

10. The tool according to claim 1 or 2, characterized in that, At least one paired curved edge (52) and / or at least one paired cutting edge (51) are disposed in the opening (46) of the support surface (47) of the lower tool (9) and / or are disposed on the lower tool (9) from the outside adjacent to the support surface (47).

11. The tool according to claim 10, characterized in that, The paired curved edges (52) and / or the paired cutting edges (51) are fixedly disposed at the opening (46) of the support surface (47) or fixedly disposed on the base (53) of the lower tool (9), wherein the opening (46) of the support surface (47) is positioned adjacent to the paired curved edges (52) and / or the paired cutting edges (51) and is movable relative to the base (53).

12. The tool according to claim 1 or 2, characterized in that, The length of the curved edge (45) and / or the cutting edge (38) on the machining tool (37) is less than the opening width of the opening (46) in the support surface (47) of the lower tool (9).

13. The tool according to claim 1 or 2, characterized in that, The tool is used to process sheet metal.

14. The tool according to claim 9, characterized in that, The at least one clamping element is compressible relative to the processing tool (37).

15. A method for processing a plate-shaped workpiece (10), - In the method, the upper tool (11) moves along the upper positioning axis (16) by means of a first drive assembly (17). The upper tool is capable of moving along the upper tool stroke axis (14) towards the workpiece (10) to be processed by means of the upper tool (11) and in the opposite direction by means of a stroke drive device (13), and is capable of being positioned along the upper positioning axis (16) extending perpendicular to the upper tool stroke axis (14). - In the method, the lower tool (9) moves along a lower positioning axis (25) by means of a second drive assembly (26), the lower tool being oriented relative to the upper tool (11) and being able to be positioned along the lower positioning axis (25) which is oriented perpendicular to the upper tool stroke axis (14) of the upper tool (11), and - In the method, the first drive assembly (17) and the second drive assembly (26) are operated by means of a control device (15) to move the upper tool (11) or the lower tool (9). Its features are, - Using the tool (31) according to any one of claims 1 to 14, the workpiece (10) is machined, and the workpiece portion (81) of the plate-shaped workpiece (10) is positioned relative to the support surface (47) of the lower tool (9). - The curved edge (45) on the upper tool (11) and the paired curved edge (52) on the lower tool (9) are oriented relative to each other, and at least one stroke movement is manipulated, during which the workpiece portion (81) is bent relative to the plate-shaped workpiece (10), and - The bent workpiece portion (81) and / or the cutting edge (38) of the upper tool (11) and the mating cutting edge (51) of the lower tool (9) are moved to the separation position, and then the separation stroke for punching the workpiece portion (81) out of the plate-shaped workpiece (10) is manipulated.

16. The method according to claim 15, characterized in that, The orientation of the curved edge (45) or cutting edge (38) of the upper tool (11) relative to the paired curved edge (52) or paired cutting edge (51) of the lower tool (9) is controlled by at least one rotational movement of the upper tool (11) and / or the lower tool (9) and / or by the movement direction of the upper tool (11) and / or the lower tool (9) along the upper positioning axis (16) and / or the lower positioning axis (25).

17. The method according to claim 15 or 16, characterized in that, During the bending stroke movement between the upper tool (11) and the lower tool (9), a stroke movement is performed along the upper tool stroke axis (14) of the upper tool (11) and / or the lower tool stroke axis (30) of the lower tool (9), or a stroke movement located outside the upper tool stroke axis (14) and the lower tool stroke axis (30) is additionally superimposed on the stroke movement along the upper tool stroke axis (14) and the lower tool stroke axis (30).

18. The method according to claim 15 or 16, characterized in that, When the width of the workpiece portion (81) is less than the opening (46) in the support surface (47) of the lower tool (9), the bending and / or separation position is manipulated to at least one paired bending edge (52) and / or paired cutting edge (51) in the opening (46).

19. The method according to claim 15 or 16, characterized in that, When the width of the workpiece portion (81) is greater than the opening (46) in the support surface (47) of the lower tool (9), the bending and / or separation position is manipulated to at least one paired bending edge (52) and / or paired cutting edge (51) outside the support surface (47).

20. The method according to claim 15 or 16, characterized in that, For the separation stroke or bending stroke motion, the cutting edge (38) or bending edge (45) of the upper tool (11) and the paired cutting edge (51) or paired bending edge (52) of the lower tool (9) are oriented relative to each other according to the corresponding material thickness of the workpiece portion (81).

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