Broaching tool arrangement for a punching tool

Abstract

The invention relates to a broaching tool arrangement (10) for a punching machine (90) comprising an upper tool (91) and a lower tool (92) on which a punch (96) and a die (95) for punching workpieces (W) from a base material (G) are arranged, wherein the upper tool (91) and the lower tool (92) are movable away from each other after punching, forming a gap (93) between the upper tool (91) and the lower tool (92), wherein the broaching tool arrangement (10) comprises a slide (40) with a broaching tool (70) for broaching at least one punched workpiece (W) from the gap (93) between the upper tool (91) and the lower tool (92), which is guided linearly along a guide axis (F) on a linear guide (11) and driven by a slide drive (100), and wherein the linear guide (11) comprises a pair of linear guide elements at a transverse distance (Q) to the guide axis (F). (12, 13) each has a slide part (41,42) of the slide is linearly guided, the slide having a slide base (50) connected to the slide parts (41, 42), which has the broaching tool (70) or a tool holder (51) for detachably fastening the broaching tool, wherein the linear guide (11) has at least one connecting element (16, 17, 45, 47) for fixing the linear guide elements (12, 13) at a transverse distance (Q) from each other. It is provided that the at least one connecting element (16, 17, 45, 47) is designed to fix the linear guide elements (12, 13) at at least two different transverse distances (Q1, Q2) for geometrically adapting the broaching tool arrangement to a receptacle (90A) for the broaching tool arrangement arranged on the upper tool (91) or lower tool (92).

Description

[0001] The invention relates to a broaching tool arrangement for a punching machine, comprising an upper tool and a lower tool, on which a punch and a die for punching workpieces from a base material are arranged, wherein the upper tool and the lower tool can be moved away from each other after punching, forming a gap between the upper tool and the lower tool, wherein the broaching tool arrangement includes a slide, guided linearly along a guide axis and driven by a slide drive, with a broaching tool for clearing at least one punched-out workpiece from the gap between the upper tool and the lower tool, wherein the linear guide has a pair of linear guide elements at a transverse distance to the guide axis, on each of which a slide part of the slide is linearly guided, and wherein the slide has a slide base connected to the slide parts.which includes the broaching tool or a tool holder for the detachable fastening of the broaching tool, wherein the linear guide has at least one connecting element for fixing the linear guide elements at a transverse distance from each other.

[0002] Such a broaching tool arrangement is known as prior art. Another broaching tool arrangement is described in DE 10 2013 226 816 A1.

[0003] A punching machine is, for example, a punching machine designed or intended for fine blanking. When the upper and lower dies have completed the punching process and one or more punched-out workpieces are ready in the space between them, the broaching tool assembly removes the workpiece(s) from the space. Additionally, a suction device and / or blow-out device may be provided to convey the workpieces, at least partially, from the space by the slide or broaching tool into a collection device.

[0004] Broaching tools are individually custom-made for the specific stamping machine they are intended for. This is a complex process.

[0005] It is therefore the object of the present invention to provide an improved broaching tool arrangement.

[0006] To solve the problem, in a broaching tool arrangement of the type mentioned above, it is provided that the at least one connecting element for fixing the linear guide elements is designed at least two different transverse distances for geometrically adapting the broaching tool arrangement to a receptacle for the broaching tool arrangement arranged on the upper tool or lower tool.

[0007] A fundamental concept of the present invention is to provide a flexible, individually usable broaching tool arrangement. This allows, for example, a type of series production in which several broaching tool arrangements are provided, which can then be adapted to the respective stamping machine.

[0008] The base material is, for example, a flat material, a sheet metal blank, or something similar. The base material is unwound from a roll or a coil. The base material can be, for example, a sheet metal component, a sheet metal body, or a metal wall component.

[0009] At a minimum, the transverse width of the linear guide, i.e., the lateral distance between the linear guide elements, is adjustable. For example, one or more connecting elements are provided that connect the linear guide elements directly or indirectly. Thus, the broaching tool arrangement can be adapted, for example, to the geometric conditions and / or dimensions of the upper or lower tool, to the arrangement and design of the tool guides of the punching machine for the lower or upper tool, or to other geometric boundary conditions of the punching machine.

[0010] The linear guide elements can be directly connected to each other by one or more connecting elements, allowing for adjustment of the lateral distance. For example, one such linear guide element is rigidly connected to another and engages in a receptacle on the other linear guide element. It is also possible for a connecting element to be multi-part, for example, with two connecting parts, which will become even clearer.

[0011] The carriage can also be designed and intended for lateral adjustment or for setting the lateral distance. Therefore, it is possible that the linear guide elements are adjusted to the respective lateral distance by the carriage itself.

[0012] It is preferred if both the slide and connecting elements arranged between the linear guide elements are designed and provided for adjusting the transverse distance between the linear guide elements.

[0013] The linear guide elements and the at least one connecting element connecting them, in particular directly, form, for example, a guide frame.

[0014] For example, the lower tool is guided relative to the upper tool by means of tool guides. This allows, for instance, the punch and die, which are located on the upper and lower tools respectively, to be moved relative to each other in order to perform the punching operation.

[0015] The linear guide elements preferably have fastening devices, for example screw projections, support projections or the like, for fastening to the punching machine, in particular the lower tool or the upper tool.

[0016] A particularly preferred embodiment provides that the broaching tool arrangement, in particular the linear guide elements of the linear guide, can be arranged or are arranged on the lower tool.

[0017] Advantageously, at least one connecting element has a connecting part that is fixed or non-displaceable with respect to the transverse distance on one of the linear guide elements and engages movably with respect to the transverse distance in a receptacle that is fixed or non-displaceable with respect to the transverse distance on the other linear guide element. For example, the connecting element and the receptacle can be fixed in position on the linear guide elements. However, it is also possible that the connecting element and / or the receptacle are movably arranged on the respective linear guide element, for example, pivotably, but are fixed in position or non-displaceable with respect to the transverse distance on the linear guide element.For example, the connecting element can be pivotably arranged on a linear guide element, so that it can be pivoted towards the other linear guide element, but is then fixed against displacement with respect to the transverse distance.

[0018] The mounting can, for example, be arranged directly on a linear guide element or a slide component, which will be explained later. It is also possible for the connecting element to be multi-part, with the mounting located on one connecting component into which another connecting component engages.

[0019] The at least one connecting element comprises, for example, a first connecting part and a second connecting part that is mounted on the first connecting part, for example by means of a sliding bearing. The connecting parts can be fixed to one another at the respective transverse distance by means of a fixing device.

[0020] The first and second connecting parts are, for example, telescopic parts that are mounted next to each other in a telescopic manner. For example, the first connecting part has a telescopic receptacle into which the second connecting part engages.

[0021] It is also possible that the first connecting part has a screw receptacle into which the second connecting part can be screwed. Thus, for example, screw threads arranged on the screw receptacle and the second connecting part form the fixing device.

[0022] The fixing device can be designed in various ways. For example, the fixing device includes a locking arrangement with a locking element on one connecting part and a locking receptacle for receiving the locking element on the other connecting part.

[0023] The locking element is preferably spring-loaded.

[0024] It is particularly advantageous if several locking receptacles are arranged on the connecting part with the at least one locking receptacle. The locking receptacles are especially preferably arranged equidistant from one another and / or in a grid pattern.

[0025] Such a measure is also advantageous in connection with a locking device. For example, the fixing device can include or be formed by a locking device. The locking device has a locking element on one connecting part for engaging one or more locking receptacles in the other connecting part. For example, locking receptacles such as the aforementioned locking receptacles are arranged at equidistant intervals and / or in a grid pattern on the connecting part.

[0026] Combinations of locking device and locking arrangement are possible if, for example, the locking element is spring-loaded.

[0027] It is also advantageous to design the fixing device as a clamping device, wherein a clamping element, e.g. a clamping screw, is arranged on one connecting part, with which the other connecting part can be clamped to this aforementioned connecting part.

[0028] Combinations of the aforementioned fixing devices can be provided, such as a locking device with multiple locking receptacles and an additional clamping device, so that, for example, clamping is possible in addition to the detent locking and / or clamping is possible at positions between locking receptacles or detent receptacles on the connecting part. Thus, individual adjustment of the transverse distance is possible using the clamping device. Furthermore, predefined transverse distance positions can also be provided by detent receptacles or locking receptacles on a respective connecting part.

[0029] Advantageously, at least one of the connecting parts is equipped with a measuring scale and another with a measuring index, the measuring index indicating a transverse distance set on the measuring scale by the connecting parts. A combination of, for example, a measuring scale and measuring index, and additionally a locking element and locking receptacle, etc., is readily possible.

[0030] The at least one connecting element preferably has a rod-shaped form or is designed as a connecting rod.

[0031] As already mentioned, multiple connecting elements are possible, for example, several connecting rods. Multiple telescopic connecting elements or connecting rods are also readily possible.

[0032] Furthermore, it is possible that, for example, a sliding receptacle or sliding guide is provided on one part of the slide, into which the connecting element in the form of a connecting rod, which is arranged on the other part of the slide, engages slidably.

[0033] An arrangement of several such connecting rods or connecting elements, wherein, for example, each slide part has a connecting rod or connecting element and a receptacle for the connecting element of the other slide part, is particularly preferred. For example, several rod-shaped connecting elements, e.g., two rod-shaped connecting elements, can be arranged on one slide part, which then engage in receptacles for the connecting element on the other slide part. A rake-like shape can be formed.

[0034] It is advantageous if the at least one connecting element comprises an arrangement of at least two connecting elements spaced apart from each other with respect to the guide axis and holding the linear guide elements at the respective transverse distance from each other. For example, this forms a linear guide frame.

[0035] It is possible, for example, that no connecting element is arranged on a front area of ​​the linear guide elements, towards which the slide can be pre-adjusted into the space between the upper tool and the lower tool, so that the linear guide elements can engage in corresponding receptacles or receiving spaces of the punching machine, for example in the manner of side legs of a fork or a U-shaped configuration.

[0036] The connecting element(s) can directly connect the linear guide elements to one another. It is particularly advantageous if the at least one connecting element comprises a connecting element that directly connects the two linear guide elements to one another. For example, a connecting part of the connecting element can be arranged on each linear guide element, which can be fixed to the connecting part on the other linear guide element by means of the fixing device.

[0037] The slide sections are advantageously connected to one another by at least one connecting element, by means of which the lateral distance between the slide sections perpendicular to the guide axis can be adjusted. This at least one connecting element can, so to speak, allow for an adjustment of the slide's lateral width, namely by making the distance between the slide sections variable.

[0038] The at least one connecting element linking the slide sections can serve solely to adjust the transverse distance between the slide sections perpendicular to the guide axis. Therefore, this connecting element can be one that is not, or not exclusively, intended to connect the linear guide elements to one another. The linear guide elements are preferably connected to each other at the respective transverse distance by connecting elements, such that the slide is irrelevant; in other words, the linear guide elements can be held at the respective transverse distance by the connecting elements even without the slide attached to them.

[0039] However, it is also possible that the slide parts, through the at least one connecting element that joins them together, contribute to maintaining or determining the transverse spacing of the linear guide elements, or are the only measure provided for this purpose. For example, it is advantageous if the connecting element that joins the slide parts together forms or includes a connecting element designed or intended for adjusting the transverse spacing of the linear guide elements. This expresses the fact that the linear guide elements are held at the desired transverse spacing, for example, solely by the slide.However, it is also possible that a combination is provided in which the linear guide elements of the linear guide are held at a respective transverse distance by at least one connecting element arranged directly and / or immediately on the linear guide elements, and in addition, at least one connecting element of the slide defines or holds the transverse distance of the linear guide elements.

[0040] It is advantageous if the broaching tool arrangement has an adjustment device for setting the distance between the slide base and the slide sections, wherein the distance between the slide base and the slide sections can be set transversely to the guide axis using the adjustment device. Thus, the slide base can, for example, be positioned closer to one slide section or closer to the other slide section, or, preferably, centrally located between the slide sections. For example, this makes it possible to set the slide base transversely centrally between the linear guide elements.

[0041] The adjustment device is advantageously designed to center the slide base between the slide parts, so that the slide base is positioned centrally between the linear guide elements or the slide parts with respect to the guide axis. Such an adjustment is possible, for example, with a sliding guide in which the slide base is slidably arranged between the slide parts.

[0042] The adjustment device advantageously comprises a rack and pinion drive, which includes a gear rotatably mounted on the slide base and meshing with racks connected to the slide sections. The racks project perpendicularly to the guide axis, extending in front of the slide sections at the transverse distance between the linear guide elements, and the gear is arranged between the racks. Thus, the gear ensures, for example, that when one slide section is moved towards the other, the slide simultaneously moves the other slide section towards the aforementioned slide section via the gear, resulting in the slide base being equidistant from both slide sections.

[0043] The racks are, for example, each arranged on a connecting element to adjust the lateral distance of the linear guide elements. The combination of rack and pinion can also form the fixing device, or be part of the fixing device for securing the connecting parts at the specified lateral distance. If the rack and pinion drive is sufficiently stiff, this, for example, provides lateral fixation of the slide base relative to the racks and thus the connecting parts.

[0044] The slide expediently includes a coupling for connecting a drive element of the slide drive. The coupling has a drive receptacle for receiving the drive element and at least one coupling element adjustable on the drive receptacle between a coupling position intended for engagement with the coupling receptacle of the drive element and a release position.

[0045] The coupling element is spring-loaded into the engaged position by a spring assembly. This allows the coupling to be released, for example, under a sufficiently high load on the drive element, such as when the carriage encounters an obstacle. This disengages or decouples the drive element of the carriage drive.

[0046] The at least one coupling element can be designed in the manner of an axle element or a bearing element. In particular, the at least one coupling element is designed to form a pivot bearing with which the drive element can be pivotally attached to the slide about a pivot axis.

[0047] The coupling element can be opposed to a fixed axle element or bearing element that is also adjustable between a coupling position and a release position, so that both coupling elements together form the pivot bearing.

[0048] Advantageously, a handle is provided with which the coupling element can be adjusted from the coupled position to the disengaged position against the force of the spring assembly. In the disengaged position, the coupling element is further away from the drive unit than in the coupled position, thus facilitating the removal or attachment of the drive unit. Manual disengagement can therefore be achieved using the handle.

[0049] The coupling advantageously has two spring-loaded coupling elements. For example, the spring-loaded coupling elements are arranged opposite each other on the drive mounting. The coupling elements can be designed in the form of axle elements or bearing elements.

[0050] If two coupling elements are present, each coupling element is preferably equipped with a handle, in particular a handle lever, the handle being designed for actuating the coupling element into the release position. A preferred arrangement of the handles provides that the handle of one coupling element is located closer to one linear guide element and the handle of the other coupling element is located closer to the other linear guide element of the linear guide. It is preferred if the coupling for the drive element of the slide drive can be released by actuating a single handle or coupling element.

[0051] The handles or grips are preferably swivel levers.

[0052] The broaching tool arrangement expediently comprises a first broaching tool and at least one second broaching tool that differs from the first, wherein both broaching tools can be detachably attached to the tool holder of the slide, for example, by being plugged in and / or screwed in place. The broaching tools preferably have different first and second transverse widths; thus, if, for example, the linear guides have a first transverse distance from each other or are set at a first transverse distance from each other, a first broaching tool with a suitable transverse width is used. If a second, for example, larger transverse distance exists between the linear guide elements, the second broaching tool, for example, having a larger transverse width, can be used.

[0053] The at least one broaching tool preferably has a broaching contour and / or a broaching recess. In particular, it is advantageous if the broaching tool is designed for pulling or pushing broaching of the working area in which the punched-out workpiece lies.

[0054] It is advantageous if the broaching tools are multi-part. For example, the broaching tool arrangement includes at least one broaching tool, which has a tool insert and a tool insert holder to which the tool insert can be detachably attached. For example, the tool insert can provide a broaching contour that is advantageous for a specific application and can be replaced if necessary.

[0055] The clearing tool is designed, for example, as a pushing tool or a pulling tool.

[0056] Preferably, the broaching tool arrangement includes a displacement measuring system with at least one position sensor arranged on the linear guide and a sensor encoder arranged on the slide. A sensor mount for the sensor encoder is arranged on the slide, allowing the sensor encoder to be fixed in at least two different positions relative to the slide base. For example, two such sensor encoders can be provided, namely for opposite end positions of the slide with respect to the guide axis. Accordingly, it is advantageous if two sensors are also provided, for example, one sensor located at the front in one direction of movement towards the upper and lower tools, and one sensor located at the rear in the same direction of movement. The respective working position on the slide can be set based on the adjustable position of the sensor encoder.Alternatively, it is also possible that the position of the sensor on the linear guide can be adjusted, for example by means of a sliding guide.

[0057] The linear guide preferably has a measuring scale associated with the position sensor and a measuring index connected to the sensor transmitter and adjustable at the sensor mount for indicating the position of the carriage relative to the measuring scale. Using the measuring index and the measuring scale, it is possible to set a forward and / or rear working position of the carriage.

[0058] The linear guide elements are preferably equipped with a mounting device for attachment to the punching machine, for example, the lower tool. The mounting device preferably allows the linear guide elements to be mounted in different relative positions to the tool, in particular the lower tool.

[0059] Exemplary embodiments of the invention are explained below with reference to the drawing. The drawing shows: Fig. 1 a perspective oblique view of a reaming arrangement according to the invention with three different reaming tools, Fig. 2 the reaming tool arrangement according to Fig. 1 from above with linear guide elements at a first transverse distance, Fig. 3 the reaming tool arrangement according to Fig. 2, however with their linear guide elements at a second transverse distance, Fig. 4 a broaching tool of the broaching tool arrangement according to Fig. 1, Fig. 2 to Fig. 3 from the top, Fig. 5. Make a cut along a cutting line AA using the broaching tool according to Fig. 4, Fig. 6 a front part of the reaming tool arrangement according to Fig. 1, Fig. 2 to Fig. 3 from the top, Fig. 7 the reaming tool arrangement according to Fig. 1, Fig. 2 to Fig. 3 from the side, Fig. 8 a coupling of the reaming tool arrangement according to the preceding figures from above with a partially cut area, Fig. 9 the clutch according to Fig. 8 as a section view, for example along a section line BB in Fig. 8, Fig. 10 a partial cut through a punching machine with which the broaching tool arrangement according to the preceding figures can be used, with an upper tool and a lower tool, when these cut out or punch out a workpiece, Fig. 11 the upper tool and the lower tool according to Fig. 10, however, in a position moved away from each other after the punching process, so that there is a gap between the upper tool and the lower tool, Fig. 12. another cut through the punching machine according to Fig. 10 and Fig. 11, wherein the reaming tool of the reaming tool arrangement according to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 to Fig. 7 is located in the space between the upper tool and the lower tool, and Fig. 13 the order accordingly Fig. 12, wherein the upper tool and the lower tool are arranged further apart and workpieces are pushed into a workpiece holder of the broaching tool.

[0060] A broaching tool arrangement 10 has a linear guide 11 which can be arranged on a punching machine 90 with an upper tool 91 and a lower tool 92. The broaching tool arrangement 10 serves to remove finished workpieces W remaining in a space 93 between the upper tool 91 and the lower tool 2.

[0061] The broaching tool arrangement 10 comprises the linear guide 11 with linear guide elements 12 and 13, which serve to linearly guide a slide 14 along a linear guide axis F.

[0062] The linear guide elements 12, 13 are adjustable in different transverse distances Q, for example a transverse distance Q1 and a transverse distance Q2 which is smaller than this, by means of connecting elements 16, 17.

[0063] Further connecting elements 45 and 47 on the carriage 40 are also provided or suitable for adjusting the transverse distance between the linear guide elements 12 and 13.

[0064] The linear guide elements 12, 13 form, for example, guide rails. The linear guide elements 12, 13 have linear guide carriers 14, on each of which a rail 15 is arranged. The rails 15 serve to guide the carriage 40, in particular to guide carriage parts 41 and 42, which are in guiding engagement with the rails 15 and thus with the linear guide elements 12, 13.

[0065] The linear guide elements 12, 13 can, for example, have end stops 14A at their longitudinal end regions.

[0066] The slide 40 is guided linearly along the guide axis F on the linear guide 11 between a front working position AV and a rear working position AH. In the front working position AV, the slide 40 engages, for example, in the space between the upper tool 91 and the lower tool 92, while in the rear working position AH it is moved away from the upper tool 91 and the lower tool 92. The working position AH can also be understood as the release position that the slide 40 assumes during a punching operation of the upper tool 91 and the lower tool 92, while the front working position AV represents a clearing position.

[0067] The linear guide carriers 14, for example, have a fastening device 26, which includes, for example, support projections 27, screw receptacles or the like, wherein the fastening device 26 is provided and suitable for connection with the punching machine 19 and / or fastening to the punching machine 19.

[0068] The connecting elements 16, 17 are rod-shaped connecting elements that extend between the linear guide elements 12 and 13 transversely to the guide axis F and together with the linear guide elements 12 and 13 form a guide frame 28 of the linear guide 11.

[0069] The linear guide frame 28 can be attached as a whole, for example, to the lower tool 92 of the punching machine 90, namely by means of the fastening device 26.

[0070] Each connecting element 16, 17 comprises a connecting part 18 and a connecting part 19. For example, the connecting parts 18 project from the linear guide element 12 in the direction of the linear guide element 13, while the connecting parts 18 project from the linear guide element 13 in the direction of the linear guide element 12, namely to the opposite connecting part 18.

[0071] The connecting parts 18 and 19 are designed as telescopic parts or form telescopic parts. For example, a sliding receptacle 18A is provided on the connecting part 18, on which the connecting part 19, which in this respect forms a sliding element 19A, is slidably mounted. For example, the connecting part 18 is designed as a tube body into which the sliding element 19A is inserted or can be inserted and is slidably mounted.

[0072] The connecting elements 16, 17 can be fixed in the desired transverse sections Q1, Q2, and other transverse distances Q not shown individually in the drawing, by means of fixing devices 20. Fixing devices 20 are provided for each connecting element 16, 17. The connecting elements 16, 17 are arranged at a longitudinal distance with respect to the guide axis F. For example, the connecting element 16 is arranged at a rear longitudinal end of the linear guide 11 with respect to the guide axis F, and the connecting element 17 is arranged approximately in the middle with respect to the guide axis F. Preferably, no connecting element 17 is arranged at a front longitudinal end of the linear guide 11 with respect to the guide axis F, so that the linear guide 11 is, for example, designed in a fork-like form, with the front longitudinal ends of the linear guide elements 12, 13 then being arranged, for example, in slot-like or narrow recesses of the punching machine 90.

[0073] Thus, the connecting elements 16, 17 fixed by the fixing devices 20 at positions spaced apart from each other with respect to the guide axis F can reliably fix the transverse distance Q between the linear guide elements 12, 13.

[0074] The fixing devices 20 comprise locking arrangements 21, which are designed as detent devices. Each locking arrangement 21 includes a spring-loaded locking element 22, which can engage in a locking receptacle 23 in dedicated detent positions, for example, in increments of 2 mm or 3 mm. The locking element 22 is, for example, mounted on the connecting part 18, and the locking receptacle 23 is arranged on the connecting part 19.

[0075] Thus, the connecting elements 16, 17 can be locked together at grid-like transverse distances Q.

[0076] Instead of or in addition to the locking element 22, a clamping device 22A, e.g. with a clamping screw as the clamping element, can also be provided. For example, one of the locking elements 22 can also be designed as a clamping screw. Thus, virtually stepless transverse distances Q can be set.

[0077] A measuring scale 24 on at least one of the connecting elements 16 or 17 assists an operator in setting the transverse distance Q. The measuring scale 24 is, for example, arranged on the connecting part 19. A measuring index 25, for example a pipe end or longitudinal end of the connecting part 18, indicates the currently set transverse distance Q by pointing to the respective position of the measuring scale 24.

[0078] It would be conceivable to use different slides on the linear guide 11, each set at a transverse distance Q, with its slide sections having suitable transverse distances to one another. However, the invention provides a dynamic concept, i.e., the slide 40 is adaptable to the transverse distance Q of the linear guide 11, in particular continuously adaptable.

[0079] The carriage 40 comprises carriage parts 41 and 42, which are guided on the linear guide elements 12, 13. Each carriage part 41, 42 has a linear guide body 43 on which a linear guide receptacle 44 is arranged, which engages with its associated rail 15. Thus, the carriage 40 is guided linearly along the guide axis F on the rails 15.

[0080] The slide parts 41, 42 are connected to each other by connecting elements 45, 47, which are slidably mounted in guide receptacles 46 and 48 transversely to the guide axis F. Thus, by moving the connecting elements 45, 47 in the guide receptacles 46, 48, the transverse distance Q can also be adjusted on the slide 40. For example, the connecting elements 45 project from slide part 41 towards slide part 42 and engage in the guide receptacles 48 on slide part 42. Conversely, the connecting elements 47 project from slide part 42 towards slide part 41 and slidably engage in the guide receptacles 46. Therefore, the two slide parts 41, 42 can be moved towards and away from each other, guided by the connecting elements 45 and 47 engaging in the guide receptacles 46 and 48.

[0081] The connecting elements 45 and 47 simultaneously serve as supports for a slide base 50 of the slide 40. The slide base 50 of the slide 40 serves to hold broaching tools 70, of which broaching tools 70A, 70B, and 70C are shown as examples. Insofar as the broaching tools 70A, 70B, and 70C have the same functions or the same parts, the same reference numerals are used below. When any broaching tool 70A, 70B, or 70C is meant, the broaching tool is referred to generally as broaching tool 70.

[0082] The slide base 40 has a tool holder 51 for releasably holding a broaching tool 70. For example, the tool holder 51 includes retaining receptacles 52 into which a mounting bracket 72 of the broaching tool 70 engages.

[0083] The mounting bracket 72 is arranged on a tool carrier 71 of the broaching tool 70.

[0084] The tool carrier 71, for example, includes a plate body 76.

[0085] For example, the fastening bracket 72 comprises retaining projections 73, in particular fork-shaped retaining projections 73, which can be arranged in the form-fitting retaining receptacles 52 of the tool holder 51.

[0086] For example, screw receptacles 53 are provided on at least one holding mount 52 and screws 74 are provided on the holding projections 73, by means of which the respective broaching tool 70A, 70B or 70C can be detachably fastened to the tool holder 51.

[0087] The mounting bracket 72 can include fixing projections 75 that extend in front of the retaining projections 73 and are designed and configured to engage with fixing receptacles 54 on the retaining receptacles 52 of the slide base 50. This makes, for example, the alignment of the respective broaching tool 70A on the slide base 50 particularly easy.

[0088] A central alignment or centering of the slide base 50 between the slide part 41 and the slide part 42 is ensured by a rack and pinion drive 55, which forms an adjusting device 55A for adjusting a distance of the slide base 50 to the slide parts 41, 42.

[0089] The rack and pinion drive 55 comprises racks 56 and 57, which are connected to the slide parts 41 and 42. For example, rack 56 is arranged on one of the connecting elements 45 and rack 57 on one of the connecting elements 47.

[0090] A gear 58 is rotatably mounted on the slide base 50, positioned between and meshing with the racks 56 and 57. Thus, when the slide parts 41 or 42 are moved towards or away from each other, the racks 56 and 57, in conjunction with the gear 58, ensure a central positioning of the slide base 50 between the slide parts 41 and 42.

[0091] A slide drive 100 serves to drive the slide 40. The slide drive 100 can form a component of the broaching tool arrangement 10, but can also be a separate slide drive.

[0092] The slide drive 100, for example, has a drive element 101 which can be coupled to the slide 40 by means of a coupling 60. Coupling receptacles 103, designed as pivot bearing receptacles, are arranged on the drive element 101 to form a pivot bearing 102, with which the drive element 101 can be pivotably connected to the slide 40 via the coupling 60.

[0093] The coupling 60 has a drive receptacle 61, for example in the form of a slot, into which the drive element 101 can be inserted.

[0094] For example, a base body 69 of the coupling 60 includes the drive receptacle 61.

[0095] The coupling elements 62A and 62B are slidably mounted in the base body 69 in the manner of bearing pins and can be moved towards or away from the drive receptacle 61. With respect to the drive receptacle 61, coupling elements 62A and 62B, hereinafter also referred to as coupling element 62, are slidably mounted along positioning axes SA. For example, linear guides 62L are provided on the base body 69 for the linear guidance of the coupling elements 62A and 62B.

[0096] The coupling elements 62 are equipped at their end regions facing the drive receptacle 61 in the manner of bearing pins, which, in a coupled position, can engage in the pivot bearing receptacles or coupling receptacles 103 on the drive element 101. In this position, the drive element 101 is mounted on the coupling elements 62 in a sliding-fixed, but pivotable manner.

[0097] The coupling elements 62A, 62B are adjustable by means of handles 65A, 65B between the coupling position, in which they are engaged with the drive element 101, in particular engaging in the swivel bearing receptacles or coupling receptacles 103, and a release position, in which this engagement is released, so that the drive element 101 can be removed from the drive receptacle 61.

[0098] Handles 65A and 65B are designed identically and are therefore referred to below as handle 65. Each handle 65 is designed, for example, as a lever that is rotatably or pivotably mounted on the base body 69 of the coupling 60 by means of a pivot bearing 66.

[0099] The handles 65 have an eccentric element 67 at their longitudinal end regions facing the base body 69 and, in particular, being received in the base body 69. An eccentric contour 67A is arranged on this eccentric element. Each pivot bearing 66 is associated with a receiving chamber 68 in which the eccentric element 67 of the handle 65 is pivotably or rotatably received. The eccentric contour 67A slides along an abutment contour 67B of a support body 64 when the respective handle 65A or 65B is moved, in particular pivoted, into a position corresponding to the coupled or released position. The abutment contour 67B projects, for example, into the receiving chamber 68.

[0100] A spring arrangement 63 is arranged between a dome element 62A, 62B and the support body 64, which acts in the direction of the dome position.

[0101] For example, the spring arrangement 63, in particular a disc spring assembly, is supported on one side by the dome element 62A, 62B and on the other side by the support body 64.

[0102] The coupling element 62A, 62B is movable relative to the support body 64, for example linearly movable, such that the support body 64, via the spring arrangement 63, loads the coupling element 62A, 62B in the direction of the coupling position, but the coupling element 62A, 62B is movable away from the drive receptacle 61 against the force of the spring arrangement 63.

[0103] If an excessive load acts on the carriage 40, for example if its movement along the linear guide 11 is blocked, but at the same time the carriage drive 100 exerts a driving force on the carriage 40, the drive element 101 can disengage from the coupling elements 62A, 62B against the force of the spring arrangements 63.

[0104] The levers or handles 65A, 65B are arranged such that, for example, handle 65A is located closer to the linear guide element 12 and handle 65B is located closer to the linear guide element 13. This allows an operator to conveniently release the coupling 60 or adjust it into its engaged position from either side of the linear guide 11.

[0105] Further convenient configurability results from a displacement measuring system 30. The displacement measuring system 30 serves to record the respective position of the slide 40 with respect to the guide axis F.

[0106] The displacement measuring system 30 comprises sensor transmitters 31, 32, and 33, which are held on the carriage 40 by means of sensor mounts 35. The sensor mounts 35 are essentially identical in construction, except that, for example, a slightly narrower or shorter sensor mount 35 is provided for sensor transmitter 31 than for sensor transmitters 32 and 33.

[0107] Position sensors 31A, 32A, and 33A are assigned to the sensor transmitters 31, 32, and 33; these are arranged, for example, on the linear guide element 13. The position sensors 31A, 32A, and 33A can be, for example, magnetic sensors, optical sensors, or the like.

[0108] It is possible that the position sensors 31A, 32A or 33A are arranged in an adjustable manner with respect to the guide axis F, for example by means of sliding mounts, various holding mounts or the like.

[0109] However, in the present design, the sensor transmitters 31, 32, and 33 are arranged to be adjustable relative to the slide 40, namely by means of the sensor holders 35. A retaining receptacle 34, for example a retaining groove, for the sensor holders 35 is arranged on one of the slide parts 41 or 42, for example, slide part 42. The sensor holders 35 thus form sensor slides 36, which are slidably held on the retaining receptacle 34, for example, slidably parallel to the guide axis F.

[0110] Each sensor carriage 36 is provided with a clamping element, for example a clamping screw 37, for clamping the sensor holder 35 to the carriage 40. For example, the clamping screw 37, in particular a set screw, passes through a section of the sensor holder 35.

[0111] To set the respective end positions of the slide 40 with respect to the guide axis F on the linear guide 11, i.e., for example, the front working position AV and the rear working position AH, a measuring scale 39 is preferably used on at least one of the linear guide elements 12 and / or 13. For example, a measuring index 38 is arranged on the slide 40, which points to the measuring scale 39. The measuring index 38 can, for example, be arranged on one of the sensor holders 35 and / or be rigidly connected to one of the sensor transmitters 31, 32, or 33. Thus, if the position of the sensor transmitter 31, 32, or 33 is changed relative to the slide part 42, the measuring index 38 is moved accordingly.

[0112] The broaching tools 70A, 70B and 70C have different widths with respect to the transverse distance Q. For example, the broaching tool 70A is intended for the broaching tool arrangement 10 with the transverse distance Q1, while the broaching tool 70B is intended for the operation of the broaching tool arrangement 10 with the transverse distance Q2.

[0113] For an even larger lateral distance Q, the 70C broaching tool is provided, for example.

[0114] The broaching tools 70 could now directly have broaching contours 82 and workpiece holders 81, for example on a side of the tool carrier 71 or plate body 76 opposite the mounting bracket 72. The workpiece holders 81 are arranged next to the broaching contours 82 and / or are bounded by the broaching contours 82.

[0115] However, a tool insert holder 77 is provided on the tool carrier 71, into which a tool insert 80A, 80B or 80C, hereinafter also referred to simply as tool insert 80, can be inserted.

[0116] The tool insert holder 77 serves to use different tool inserts 80 which, for example, have different broaching contours 82 and / or different workpiece holders 81.

[0117] For example, each tool insert 80 has a workpiece holder 81 for holding workpieces W.

[0118] The workpiece holder 81 is designed, for example, as a recess on a broaching side 83. The broaching side 83 is designed to slide along a tool side 94, which defines the space 93 and on which the workpieces W to be removed are arranged.

[0119] The depth and / or geometric design of the receiving cavity or workpiece holder 81 can be adapted to the workpieces W to be conveyed. For example, a suitable tool insert 80A, 80B or 80C is used on the broaching tools 70A, 70B or 70C for this purpose.

[0120] For example, a die 95 is arranged on the lower tool 92, opposite a punch 96 on the upper tool 91. When a drive of the punching machine 90 (not shown in the drawing) moves the lower tool 92 towards the upper tool 91 in a punching or closing movement S, the die 95 and the punch 96 punch out one or more workpieces W, i.e., stamped parts, from a base material G.

[0121] The workpiece W initially remains on the die 95, i.e., on the lower tool 92.

[0122] This is followed by an opening movement O, in which the lower tool 92 is moved away from the upper tool 91, so that the upper tool 91 and the lower tool 92 define a space 93 between them.

[0123] Even before the opening movement O begins, or already at the beginning of the opening movement O, the broaching tool 70 can be moved from the rear working position AH towards the front working position AV, so that it engages in an intermediate space 93A, which is located, for example, on the upper tool 91 or the lower tool 92, in particular next to the opposing punching tools, namely die 95 and punch 96. Thus, the broaching tool 70 can reach close to the working area between die 95 and punch 96 even before the actual broaching of workpieces W.

[0124] When the opening movement O has progressed sufficiently that the space 93 between the die 95 and the punch 96 is free, the broaching tool 70 is moved forward into the space 93 between the die 95 and the punch 96 until the workpiece holder 81 is, for example, positioned above the die 95.

[0125] In a further operation, an ejection tool 97 arranged on the die 95 ejects the workpiece W into the space 93, whereby in this situation the broaching tool 70 is already arranged above the die 95 and thus an ejected workpiece W enters the receiving cavity or workpiece holder 81 of the tool insert 80.

[0126] The actual broaching process then follows, i.e., the broaching tool 70 is moved again from the intermediate space 93 towards the rear working position AH by means of the linear guide 11 and the slide drive 100, whereby the broaching tool 70 moves or conveys the workpiece W to an opening 98A of a discharge channel 98 on the tool side 94 of the lower tool 92. The discharge channel 98 is, for example, pressurized with a vacuum, so that the workpiece W located at the opening 98A of the discharge channel 98 is drawn into the discharge channel 98.

[0127] The broaching tool arrangement 10, in particular the linear guide 11, can be arranged on a receptacle 90A of the punching machine 90, for example by means of the fastening device 26. The receptacle 90A includes, for example, spaces 90B for the linear guide elements 12, 13. The linear guide elements 12, 13 can, for example, project into spaces 90B between components of the punching machine 90, which are provided, for example, next to guides 99, in particular columns, of the punching machine 90 and form the receptacle 90A or a component thereof.

Claims

[1] Broaching tool arrangement (10) for a punching machine (90) comprising an upper tool (91) and a lower tool (92) on which a punch (96) and a die (95) for punching workpieces (W) from a base material (G) are arranged, wherein the upper tool (91) and the lower tool (92) are movable away from each other after punching, forming a gap (93) between the upper tool (91) and the lower tool (92), wherein the broaching tool arrangement (10) comprises a slide (40) with a broaching tool (70) for broaching at least one punched workpiece (W) from the gap (93) between the upper tool (91) and the lower tool (92), which is guided linearly along a guide axis (F) on a linear guide (11) and driven by a slide drive (100), and wherein the linear guide (11) comprises a pair of linear guide elements at a transverse distance (Q) to the guide axis (F). (12, 13) each has a slide part (41,42) of the slide (40) is linearly guided, wherein the slide (40) has a slide base (50) connected to the slide parts (41, 42), which has the broaching tool (70) or a tool holder (51) for releasably fastening the broaching tool (70), wherein the linear guide (11) has at least one connecting element (16, 17, 45, 47) for fixing the linear guide elements (12, 13) at the transverse distance (Q) from each other, , characterized by , that the at least one connecting element (16, 17, 45, 47) is designed to fix the linear guide elements (12, 13) at at least two different transverse distances (Q1, Q2) for the geometric adaptation of the broaching tool arrangement (10) to a receptacle (90A) for the broaching tool arrangement (10) arranged on the upper tool (91) or lower tool (92). [2] Broaching tool arrangement (10) according to claim 1, characterized by, that the at least one connecting element (45, 47) has a connecting part which is fixedly or displaceably arranged with respect to the transverse distance (Q) on one of the linear guide elements (12, 13) and engages movably with respect to the transverse distance (Q) in a receptacle (46, 48) which is fixedly or displaceably arranged with respect to the transverse distance (Q) on the other linear guide element (12, 13). [3] Broaching tool arrangement (10) according to one of the preceding claims, characterized by , that the at least one connecting element (16, 17) has a first connecting part (18) and a second connecting part (19) which is mounted on the first connecting part (19), wherein the connecting parts can be fixed to each other at the respective transverse distance (Q) by means of (18, 19) a fixing device (20). [4] Broaching tool arrangement (10) according to claim 3, characterized by, that the first connecting part (18) and the second connecting part (19) are telescopic parts which are telescopically mounted next to each other. [5] Broaching tool arrangement (10) according to claim 3 or 4, characterized by , that the first connecting part (18) has a sliding receptacle (18A) in which the second connecting part (19) is slidably received, and / or a screw receptacle into which the second connecting part (19) can be screwed. [6] Broaching tool arrangement (10) according to one of claims 3, 4 or 5, characterized by, that the fixing device (20) comprises a locking arrangement (21) with a locking element (22) on one connecting part (18) and a locking receptacle (23) for receiving the locking element (22) on the other connecting part (19) and / or a clamping device (22A) with a clamping element for clamping the first connecting part (18) to the second connecting part (19) and / or a detent device with a detent element on one connecting part (18) for engaging a detent receptacle on the other connecting part (19). [7] Broaching tool arrangement (10) according to one of claims 3 to 6, characterized by , that a measuring scale (24) is arranged on at least one of the connecting parts (18, 19) and a measuring index (25) is arranged on the other connecting part (18, 19), wherein the measuring index (25) indicates a transverse distance (Q) set with the connecting parts (18, 19) on the measuring scale (24). [8] Broaching tool arrangement (10) according to one of the preceding claims, characterized by, that the at least one connecting element (16, 17, 45, 47) has a rod-shaped form or is designed as a connecting rod. [9] Broaching tool arrangement (10) according to one of the preceding claims, characterized by , that the at least one connecting element (16, 17, 45, 47) comprises an arrangement of at least two connecting elements (16, 17, 45, 47) which are arranged at a distance from each other with respect to the guide axis (F) and which fix or hold the linear guide elements (12, 13) at the respective transverse distance (Q) from each other. [10] Broaching tool arrangement (10) according to one of the preceding claims, characterized by , that the at least one connecting element (16, 17) is directly connected to the linear guide elements (12, 13) or comprises a connecting element (16, 17) which directly connects the two linear guide elements (12, 13) to each other. [11] Broaching tool arrangement (10) according to one of the preceding claims, characterized by , that the slide parts (41, 42) are connected to each other by at least one connecting element (45, 47) by means of which a transverse distance (Q) of the slide parts (41, 42) transverse to the guide axis (F) can be adjusted. [12] Broaching tool arrangement (10) according to claim 11, characterized by , that the at least one connecting element (45, 47) connecting the slide parts (41, 42) together forms or comprises a connecting element (45, 47) designed or provided for adjusting the transverse distance (Q) of the linear guide elements (12, 13). [13] Broaching tool arrangement (10) according to one of the preceding claims, characterized by, that it has an adjusting device (55A) for adjusting a distance of the slide base (50) to the slide parts (41, 42), wherein the adjusting device (55A) allows a distance of the slide base (50) to the slide parts (41, 42) transverse to the guide axis (F) to be adjustable. [14] Broaching tool arrangement (10) according to claim 13, characterized by , that the adjusting device (55A) is designed to center the slide base (50) between the slide parts (41, 42) so that the slide base (50) is arranged centrally between the linear guide elements (12, 13) or the slide parts (41, 42) with respect to the guide axis (F). [15] Broaching tool arrangement (10) according to claim 13 or 14, characterized by, that the adjusting device (55A) has a rack and pinion drive (55) which includes a gear (58) rotatably mounted on the slide base (50) which meshes with racks (56, 57) which are connected to the slide parts (41, 42), wherein the racks (56, 57) project at right angles transversely to the guide axis (F) in the transverse distance (Q) between the linear guide elements (12, 13) in front of the slide parts (41, 42) and the gear (58) is arranged between the racks (56, 57). [16] Broaching tool arrangement (10) according to claim 15, characterized by , that the racks (56, 57) each form a connecting element (45, 47) for adjusting a transverse distance (Q) of the linear guide elements (12, 13) and in particular the adjusting device (55A) forms a fixing device (20) for fixing the connecting parts (18, 19) at the transverse distance (Q). [17] Broaching tool arrangement (10) according to one of the preceding claims, characterized by, that the slide (40) has a coupling (60) for coupling a drive element (101) of the slide drive (100), wherein the coupling (60) has a drive receptacle (61) for receiving the drive element (101) and at least one coupling element (62A, 62B) adjustable on the drive receptacle (61) between a coupling position provided for coupling engagement with a coupling receptacle (103) of the drive element (101) and a release position, wherein the coupling element (62A, 62B) is spring-loaded into the coupling position by a spring arrangement (63) and has a handle (65A, 65B) with which the coupling element (62A, 62B) can be adjusted from the coupling position to the release position against the force of the spring arrangement (63), in which the coupling element (62A,62B) to remove the drive element (101) from the drive receptacle (61) or to attach the drive element (101) to the drive receptacle (61) further away from the drive receptacle (61) than in the coupling position. [18] Broaching tool arrangement (10) according to claim 17, characterized by , that the coupling (60) comprises two spring-loaded coupling elements (62A, 62B) arranged opposite each other on the drive receptacle (61), each coupling element (62A, 62B) having a handle (65A, 65B) designed in particular as a lever for actuating it into the release position, the handle (65A, 65B) of one coupling element (62A, 62B) being located closer to one linear guide element (12, 13) and the handle (65A, 65B) of the other coupling element (62A, 62B) being located closer to the other linear guide element (12, 13) of the linear guide (11). [19] Broaching tool arrangement (10) according to one of the preceding claims, characterized by , that it has a first broaching tool (70A) and at least a second broaching tool (70B, 70C) different from the first broaching tool (70A), which can be detachably attached to the tool holder (51) of the slide (40). [20] Broaching tool arrangement (10) according to one of the preceding claims, characterized by , that at least one broaching tool (70) with a tool insert (80A, 80B, 80C) and a tool insert holder (77) to which the tool insert (80A, 80B, 80C) can be detachably attached. [21] Broaching tool arrangement (10) according to one of the preceding claims, characterized by , that the reaming tool (70) is designed as a pushing tool or pulling tool or both. [22] Broaching tool arrangement (10) according to one of the preceding claims, characterized by, that it has a displacement measuring system (30) with at least one position sensor (31A, 32A, 33A) arranged on the linear guide (11) and a sensor transmitter (31, 32, 33) arranged on the slide (40), wherein a sensor holder (35) for the sensor transmitter (31, 32, 33) is arranged on the slide (40), on which the sensor transmitter (31, 32, 33) can be fixed in at least two different positions relative to the slide base (50). [23] Broaching tool arrangement (10) according to claim 22, characterized by , that the linear guide (11) has a measuring scale (39) associated with the position sensor (31A, 32A, 33A) and a measuring index (38) connected to the sensor transmitter (31, 32, 33) and adjustable with the sensor transmitter (31, 32, 33) on the sensor holder (35) to indicate a position of the carriage (40) relative to the measuring scale (39). [24] Broaching tool arrangement (10) according to one of the preceding claims, characterized by, that it has a fastening device (26) arranged on the linear guide elements (12, 13) for fastening to the punching machine (90), in particular its lower tool (92).

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