Machine tool and method for machining a workpiece

Abstract

The invention relates to a machine tool (10) for machining panel-shaped workpieces (20, 20'), comprising a tool carrier (17) having at least one tool (18), wherein the machine tool (10) comprises a frame having a support device (15) which has at least one substantially rectangular machine table (19) arranged inclined at a support angle to the horizontal, and wherein at least one guide rail (16a) is held on the frame. The tool carrier (17) is mounted on the at least one guide rail (16a) so as to be movable in a movement direction along the at least one machine table (19). By means of the at least one tool (18), a plurality of smaller panels (201, 202) can be cut out of larger panel-shaped workpieces (20, 20'), and at least one handling device (27, 28) is movably mounted on the tool carrier (17), by means of which handling device the smaller panels (201, 202) can be removed from the machine table (19).

Description

Machine tool and method for machining a workpiece The present invention relates to a machine tool for machining plate-shaped workpieces, comprising a tool holder with at least one tool, wherein the machine tool includes a frame with a support device having at least one substantially rectangular machine table inclined at a support angle to the horizontal, and wherein at least one guide rail is held on the frame. The invention further relates to a method for machining a plate-shaped workpiece. DE 102009 025 816 B4 discloses a device for machining plate-shaped workpieces, in which a plate made of a wood-based material is placed on a horizontally oriented machine table and then machined by tools. The problem with such horizontally oriented machines is that, due to the dimensions of the raw plates, they require a large footprint and therefore incur high operating costs. Another disadvantage of these horizontally oriented machine tables, especially when milling wood-based panels, is the complex and often inadequate removal of the resulting chips. This leads to time-consuming cleaning procedures on the machine table and workpiece surface, resulting in significant downtime and additional costs. Cleaning devices and high extraction volumes for chip removal are also required, which complicates and increases the cost of both manufacturing and operating the machines. Furthermore, the complex operator safety system, which necessitates a safety distance around the user from the tools, further reduces the available workspace. EP 3 562 635 B1 discloses a device in which predominantly vertical machining of plate-shaped workpieces is carried out by tools on a separately erected robot arm, which simplifies the removal of chips, but also requires a large footprint, especially if the robot arm is to be able to reach the workpiece over its entire surface in order to, for example, machine its entire surface. When processing plate-shaped workpieces, end-face machining is often desirable, for example, to insert fasteners for joining other parts into these end faces. DE 102012 110 453 B4 describes a method for machining plate-shaped workpieces. To create bores in the end faces, i.e., in the sides of the workpieces running perpendicular to the main plane of the plate, sections are removed from the workpiece. This allows a drilling tool to engage the material at the corresponding location. However, this process results in the loss of part of the plate-shaped workpiece, meaning that only a smaller proportion of the total workpiece surface can be utilized. It is therefore an object of the present invention to provide a device that enables improved, more efficient end-face machining of workpieces and that requires little space. The present invention achieves this with a machine tool having the features of claim 1, and with a method having the features of claim 15. According to the invention, the machine tool for machining plate-shaped workpieces has a tool carrier with at least one tool, wherein the machine tool comprises a frame with a support device having at least one substantially rectangular machine table inclined at a support angle to the horizontal, and wherein at least one guide rail is held on the frame. The tool carrier is mounted on the at least one guide rail so as to be movable in one direction of movement along the at least one machine table.The movable mounting of the tool carrier on the guide rail makes the machine tool both particularly space-saving and suitable for a wide range of workpiece machining. Despite the limited installation space and operating range due to the small distance between the tool and the machine table, the invention allows the tool to access a high degree of the entire or nearly the entire workpiece surface. Using at least one tool, a multitude of smaller plates can be cut from larger, plate-shaped workpieces. At least one handling device is also movable on the tool carrier, enabling the removal of the smaller plates from the machine table. Remaining parts of the workpiece or remaining smaller plates on the machine table can be machined without material wear by means of the machine tool according to the invention, by exposing the end faces of the workpieces and the smaller plates perpendicular to the essential plate plane of the workpiece. Preferably, at least one end face of at least one of the smaller plates can be machined using the at least one tool. The at least one tool can particularly preferably be a tool for producing holes and / or recesses, for example, a drill or a milling cutter, by means of which at least one hole or at least one recess, in particular for a fastener such as screws, dowels, or eccentrics, can be drilled into at least one end face of at least one of the smaller plates. Furthermore, a tool for inserting / fixing the fasteners into the end face of the smaller plates can also be provided. The drill is preferably a drill that can be moved perpendicular to the plate-shaped workpiece on its plane, with a drill head of the drill running parallel to the essential plane of the workpiece or plates to be machined, so that it can machine their end faces.The tool, or rather the drill bit, is particularly preferably the one described in the paragraphs.

[0010] ,

[0013] and

[0015] The drill described in DE 102012 110453 B4 and its application, wherein the at least one tool of the present invention can only perform the corresponding end-face machining after the workpiece has been divided. The tool can also be used for end-face machining of at least one of the smaller plates and also for machining to receive plates, for example, flat dowels, as described in paragraph

[0043] and

[0044] The disclosure described in EP 4 103 373 B1 is suitable. This disclosure is incorporated herein by reference. The at least one tool can include, in particular, a drill, a milling machine, and / or a saw. The handling device can, for example, include a suction device and / or a suction cup and / or a gripper, so that the workpiece can be moved particularly easily. It is also possible to provide several tool holders, i.e., the one mentioned and at least one second tool holder, on each of which at least one of the at least one tool is mounted. In a particularly preferred embodiment In one variant, the tool carrier may, for example, have a drill and / or a saw tool, and the second tool carrier may have the handling device. A machine table, as used here, is an element suitable for supporting or acting as a base for the workpiece during machining by the tool. Preferably, the machine table has a flat, plate-like surface on which the workpiece can rest without gaps. In a particularly preferred embodiment, the machine table can, for example, have recesses on the surface of the machine table facing the tool and include a device for generating a negative pressure or vacuum between the workpiece and the recesses, by means of which the workpiece can be easily fixed to the machine table. The recesses are preferably arranged in a grid, which advantageously increases the flexibility of the workpiece fixing options on the machine table. The recesses can also be formed by strips of sealing rubber on a flat base surface of the machine table.Particularly advantageous are the recesses used for vacuum segments, which can be controlled individually or in larger groups within the entire grid, thus saving energy, for example. Furthermore, selectively switching off the vacuum under a smaller plate to be removed can simplify its removal. The machine table can alternatively or additionally be designed at least partially as a grid or grating, or include several corresponding recesses, which also promotes cooling of the workpiece or the passage of chips and saves material in the manufacture of the machine tool. Preferably, the support angle is between 60° and 90°, more preferably between 70° and 80°, between a surface of the machine table facing the tool and the horizontal. The support angle corresponds in particular to approximately the angle between a mounting surface on which the machine tool is placed and the surface of the machine table. Movement of the workpieces is preferably possible at this angle along the machine table in a horizontal and / or vertical direction. In a particularly preferred embodiment, the tool carrier can also be a portal extending perpendicular to the direction of movement over the The portal extends over at least one machine table. It can be essentially C-shaped. The at least one tool can be moved along the portal over the at least one machine table. In each embodiment, however, the tool can be mounted on the tool carrier so that it can be moved. To simplify the assembly of the machine tool, the portal preferably has the same angle to the horizontal as the support angle, so that measuring the machine is particularly easy. The frame comprises, in particular, a lower frame section for setting up the frame on a preferably flat surface. At least two support frames, arranged essentially perpendicularly and spaced apart from each other, which can also be of any type, are mounted on the lower frame section, and an upper frame section is fixed to these support frames. The support device is preferably fixed to and held against the lower frame section and / or the guide rail and the upper frame section. Optionally, the support frames and mounting plates of this design can be fixed to each other by means of connecting elements at least two contact surfaces designed as flange plates. In a particularly preferred embodiment, the tool carrier designed as a portal is a C-shaped portal and is connected to the upper and lower frame parts with guide rails on both legs of the C, or is movable on these. Arranged in the direction of gravity in the lower area under the machine table, the support device may preferably have at least two support elements for supporting the workpieces. The lower frame part can have at least two mounting plates, each connected to one of the at least two support frames, to which, in a particularly preferred embodiment, the guide rail is fixed. In a further advantageous embodiment, the workpieces can be mounted on the support device so as to be movable along the guide rail. Alternatively or additionally, the support device itself can also be movable. This allows for an additional movement of the workpiece along the guide rail. Tool holder and / or tool, thus increasing the possible flexibility of machining the workpiece. The tool holder can preferably be mounted to move along the at least one machine table by means of a linear drive, a toothed rail, or a gear, for example, a motor with a rack and pinion drive or a chain drive. This allows for a particularly simple movement mechanism. The tool can also be mounted on the tool holder to move along it by means of a cross slide. Alternatively, the tool carrier could have a gearbox, allowing both the tool carrier and the tool to be moved by a single drive. In all variants, the drives are primarily electric motors, but a hydraulic drive can also be used as an alternative or additional option. At a point where the distance between the tool holder and the machine table is minimal, the tool holder preferably has a distance of no more than 5 cm to 50 cm, and even more preferably less than 30 cm, to the machine table. In this way, the machine tool can be particularly space-saving. At least one of the support frames on one side of the machine tool can optionally be equipped with at least one storage or handling device for workpieces, for example, before or after machining. According to a further variant, a labeling device including an applicator can also be arranged on the support frame, either as part of or within one of the at least one storage or handling device. In yet another embodiment, at least one of the at least one storage device has a lifting mechanism by means of which it can be moved along the at least one support frame on which it is mounted, for example along the vertical line between an upper and a lower section of the machine table. This allows, for example, workpieces to be moved from an upper section to a lower section of the machine table. The lifting mechanism can, for example, be a rack and pinion drive or a ball screw drive. The movable portal can also be used to mount an articulated robot, for example on a carriage, alongside or as an alternative to the tool. The tool can also be mounted on an articulated robot, enabling even more versatile machining or handling of the workpiece. In one variant, at least one guide rail for the movable storage of the tool carrier and / or a plate-shaped workpiece can be fixed to both the lower and the upper part of the frame. Holding the tool carrier on guide rails on both the upper and lower frame parts is particularly advantageous when the tool carrier is designed as a portal, resulting in particularly safe guidance of the tool carrier and a particularly stable structure. In another variant, an additional guide rail, for example a central guide rail, is arranged on the machine table for moving workpieces at approximately half, or not at, the minimum height in the direction of the vertical. Here, the plate-shaped workpieces are held in place on the central guide rail by movable support elements or holding devices, such as slides, which can optionally move on both sides of the central guide rail or even circumferentially. This allows the workpiece to be moved to a greater number of positions on the machine table, enabling more versatile processing of the workpiece. In this variant, it is particularly advantageous to provide at least one, and preferably two, of the aforementioned storage and handling devices, which can preferably convey the workpieces horizontally, with a corresponding lifting mechanism. This allows the workpieces to be moved from the top of the central guide rail to the bottom of the central guide rail, where they are picked up by the handling device described above at at least one tool carrier and placed, for example, onto a slide on the corresponding side of the central guide rail, which can then move them along it. This enables advantageous machining of the workpiece, for example, in a larger number of steps on the same machine tool. In one variant of this embodiment, the handling device can also be designed such that the storage device places the workpieces onto the The carriage is offset, whereby the handling device is not mounted on the tool carrier and only pre-cut and optionally coated workpieces can be processed using the tool. Alternatively or additionally, multiple tools can be held on the tool holder and / or multiple tool holders can be mounted on the guide rail, enabling the machining of multiple workpieces simultaneously. This can also include the machining of several workpieces on the machine table at the same time. The machine tool is preferably assembled first by horizontally aligning and / or mounting the lower frame section on a flat surface, mounting vertical support frames onto the lower frame section, placing a head module onto the vertically arranged support frames, and establishing a loose connection and vertical alignment of the vertical support frames using diagonally running and intersecting strips on the back of the support frames. Next, the connecting elements are fastened to the upper frame section of the support frame, and the machine tables are mounted to the mounting plates. Finally, at least one tool carrier, preferably a gantry, is fixed to the upper frame section and the mounting plate. Optionally, all components can be surface-treated before assembly to prevent corrosion, for example. In another embodiment, the machine table is formed from several tubes arranged horizontally one above the other or vertically side by side, each containing holes through which a grid of vacuum segments, similar to the recesses described above, is formed. This embodiment allows for particularly easy cutting of the smaller plates, especially since a saw or other cutting tool can pass through the workpiece without damaging the substrate. This also eliminates the need for a wear plate under the workpiece to protect the machine table, saving both machining costs and the time required to replace wear plates. Furthermore, the wear plate makes it more difficult for the vacuum to form, thus ensuring more reliable vacuum production. The holes can be sealed with breathable rubber or similar material, so that they do not become clogged by shavings, for example. A saw can be used particularly advantageously in the gaps formed between the pipes, as there is no risk of damaging the machine table. Furthermore, the pipes can be divided into segments connected by connecting elements located relatively far from the surface of the machine table facing the tool, for example, recessed pipes. These connecting elements create cutting gaps, providing more space for the saw to move and cut perpendicular to the gaps between the pipes. If a cut is required at a different location, the workpiece can be moved and held in place by the generated vacuum, as described above. For example, the cutting gaps can have a width of 18 to 30 mm and a depth of 15 to 25 mm; this can be selected depending on the tool used. The machine of the present invention, as described above, can be used particularly in furniture manufacturing; for example, its use in the production of box-shaped furniture is advantageous. For furniture manufacturing, the smaller panels of all aspects of the invention preferably have an area of ​​0.16 m². 2 up to 10 m 2 on. In particular, a nesting process can be carried out using the machine tool. According to this process, several plate-shaped workpieces can be combined into one particularly large plate-shaped workpiece using the machine tool and, even more preferably, further machined advantageously using the same machine tool. Especially with large workpieces, the vertical arrangement saves space during machining. The present invention further comprises a method for machining a workpiece using a machine tool according to one of the preceding paragraphs, comprising the following steps: a) Arranging the plate-shaped workpiece on the machine table such that the workpiece and the machine table are substantially parallel a) the workpiece is arranged relative to each other and is supported by the machine table in the support angle above the guide rail; b) the tool carrier is moved along the guide rail and at least one of the workpiece is machined by the at least one tool, whereby a plurality of smaller plates are cut out of the plate-shaped workpiece; c) the smaller plates are removed from the machine table by means of the handling device. The steps are preferably carried out in alphabetical order. In one embodiment, the tool is moved along the portal described above in step b along a straight line that runs parallel to the support angle. The method according to the invention is particularly suitable for manufacturing box-shaped furniture. In a particularly preferred embodiment of the method, the tool comprises the aforementioned drill, wherein, according to step c, at least one hole or recess, for example for a fastener, as described above, is drilled or milled into at least one end face of at least one of the smaller plates. During the machining of the at least one end face, the corresponding smaller plate is positioned on the machine table, with at least one other of the smaller plates having been previously removed from the machine table according to step c. This is particularly advantageous because the end faces of the smaller plates are thus made accessible for machining, and no material cutouts need to be made in the plate-shaped workpieces for the insertion of a drilling tool in a direction parallel to the essential plane, as is necessary, for example, in DE 10 2012 110 453 B4.Furthermore, machining of the end face of at least one of the smaller plates can also be carried out for the purpose of receiving plates according to EP 4 103 373 B1, as described above. Additionally or alternatively, the machine tool includes the storage and handling device described above, wherein the smaller plates are also placed on the storage device in step c. For further processing of the smaller plates, the storage device can, in another embodiment, be moved upwards and downwards. In another embodiment, a wear plate can be placed on the machine table below the plate-shaped workpiece to protect the machine table. The machine table can be arranged, which is particularly advantageous in the embodiment of the machine table with the recesses, for example for cutting operations to divide the workpiece using the milling or sawing tool. In all the variants described above, the workpieces are preferably made of wood-based panels, for example MDF or HDF panels. The present invention is explained in more detail below with reference to several drawings. These show: Fig. 1 shows a machine tool according to the invention, Fig. 2 shows a machine tool according to a further embodiment of the invention; Fig. 3 shows a tool table of the machine tool according to Fig. 2 in a further embodiment; Fig. 4 shows a tool table of the machine tool from Fig. 2; Fig. 5 shows a machine tool according to a further embodiment; Fig. 6 shows a tool table of a machine tool of another variant. Figure 1 shows a machine tool 10 according to a first embodiment of the present invention. The machine tool 10 is suitable for machining plate-shaped workpieces 20 and can be used, for example, in the manufacture of box-shaped furniture, and comprises a tool holder 17 with at least one tool 18. Furthermore, the machine tool 10 has a frame with a support device 15, which has at least one substantially rectangular machine table 19 arranged at a support angle to the horizontal, and wherein at least one guide rail 16a is held on the frame. The support angle corresponds, in particular, to an angle between a mounting surface on which the machine tool 10 is mounted and the The workpiece 20 faces the surface of the machine table 19. The support angle is optionally between 60° and 90°, preferably between 70° and 80° between the surface of the machine table and the horizontal. The frame comprises a lower frame section 11 for mounting the frame, or the machine tool 10, on a mounting surface, which should preferably be or is level. Furthermore, the frame includes at least two support frames 13 arranged essentially perpendicularly and spaced apart from each other. These support frames can also have the form of any other support elements; the primary requirement is that they can stably bear the load of the other components and the workpiece 20. The support frames 13 are fixed to both the lower frame section 11 and an upper frame section 12. The support device 15 is fixed to and held by both the lower and the upper frame sections 11 and 12. The tool carrier 17, which here is designed as a portal, is mounted on at least one guide rail 16a so as to be movable in one direction of movement along the at least one machine table 19. In addition, the tool carrier 17, i.e., the portal, is also mounted so as to be movable on a second guide rail 16b above the machine table 19. The tool 18 is movably mounted on the tool carrier 17 and can thus be moved over the entire surface of the workpiece 20 and / or the machine table 19, which is supported on the machine table 19 and on support elements 21 below the machine table, by moving the tool carrier 17 and moving the tool carrier 17. By means of the at least one tool 18, a plurality of smaller plates 201 can be cut out, for example, from the larger plate-shaped workpiece 20. At least one handling device 27 is also movably mounted on the tool carrier 17, by means of which the smaller plates 201 can be removed from the machine table 19. For cutting out the smaller plates 201, the at least one tool 18 preferably comprises a saw and / or a milling cutter. Preferably, at least one end face of at least one of the smaller plates 201 can be machined using the at least one tool 18. Optionally, instead of the support elements 21, another guide rail can be arranged below the machine table 19, wherein the workpiece 20 can be moved along a direction of movement B on this additional guide rail, instead of which an additional rail can be mounted in the lower area of ​​the machine table, on which the tool carrier 17 is not held. The machine table 19 comprises recesses arranged in a grid pattern on the surface facing the tool 18 and features a device for generating a vacuum between the workpiece 20 and the recesses 191, by means of which the workpiece 20 can be fixed in various positions. Each recess 191 optionally represents an independently controllable vacuum segment. In this variant, individual vacuum segments, which may be located, for example, under the workpiece 20, can be switched on or off to allow the workpiece 20, or a correspondingly positioned, cut-out smaller plate, to be easily removed from or held against the machine table. The vacuum segments are preferably sealed against each other by sealing rubber. A collection container 40 is arranged below the machine table 19. This container collects chips and / or strips of scrap material that fall from the workpiece 20 into the container due to gravity during machining. An optional storage device 30 is also provided on at least one side of the machine tool 10. This storage device can optionally hold a labeling or marking device. The smaller panels 201 can be placed on the storage device 30 after machining using the handling device 27. For processing plates 201 that are not to be cut to size initially, additional support elements can be provided at approximately the middle height of the machine table 19 on the left or right side edge of the table 19. Fig. 2 shows a further embodiment of the present invention, which essentially corresponds to the embodiment of Fig. 1. One difference here is that the machine tool 10 optionally has a central guide rail 22 and a further lower guide rail 23. The central guide rail 22 is designed for moving workpieces 20 at approximately half, or not at the minimum, height in the direction of the vertical. The machine table 19 is provided. In conjunction with the lower guide rail 23, at least two workpieces 20' can thus be machined simultaneously. In the illustration, the tools 18 perform machining on the side of the workpieces 20' facing the tool carrier 17; however, the end-face machining described above can also be implemented for the workpieces 20'. The further lower guide rail 23 can particularly preferably be integrally formed with or fixed to the guide rail 16a. In the embodiment shown in Fig. 2, several workpieces 20' are held by several driven holding devices, here slides 221, on the central guide rail 22 and the additional lower guide rail 23, allowing them to be moved along the central guide rail 22 and the additional lower guide rail 23, in contrast to Fig. 1. Accordingly, a second handling device 28 is also movably mounted on the tool carrier 17, in addition to the handling device 27. The holding devices are designed such that they can be removed from the guide rails 22 and 23 at a workpiece exit side and, optionally via a transfer device and a return device attached to the rear of the machine table 19, transported back to a workpiece entry side of the machine tool 10. There, they are placed onto the guide rails 16a, 22 by a transfer device and transport another workpiece 20 along the machine table 19 in the direction of movement B for machining.The return device essentially corresponds to a continuation of the guide rails 22 and 23 behind the tubes 192. A storage device 30' is provided at both ends of the machine table in the direction of movement B of the tool carrier 17. The storage device 30' serves to store the workpieces 20, which can be moved there by means of a movement of the storage device 30' in an approximately perpendicular direction of movement B' to the direction of movement B on the machine table 19. The workpieces 20' can thus be arranged on both guide rails 22 and 23 by means of the handling devices 27 and 28 and machined there, for example, differently, and can also be advantageously positioned for further processing. In Fig. 2, unlike in Fig. 1, the machine table 19 is also formed from horizontally arranged tubes 192, which are arranged horizontally one above the other and which here each include the recesses 193 formed as holes in the tubes 192, through which a vacuum is created in the tubes 192, and thus between the surface of the machine table 19, and the workpiece 20. This can be generated. Recesses are formed between the tubes 192, and the tubes are connected to each other behind these by connecting elements 194. Through these recesses, for example, the at least one tool 18 can move when cutting the workpieces 20. In a variant of the embodiment of Figure 2, the handling device can also be provided such that the storage device 30' places the workpieces 20' onto the slides 221, wherein the handling device 27 is not mounted on the tool carrier 17 and only workpieces 20' that have already been cut and optionally coated on the end face can be processed by means of the tool 18. Fig. 3 shows an example of the division of a plate-shaped workpiece 20 to be machined, which here is cut into smaller plates 201, 202 of different sizes, on a machine table 19 according to the embodiment of Fig. 2, i.e., made of tubes 192, as described therein. In this variant, however, the machine tool 10 does not include the central guide rail 22. The at least one tool 18, not shown here, comprises at least one drill and / or one milling tool, preferably according to the one mentioned above in DE 102012 110453 B4 or EP 4 103 373 B1. By means of this, several holes or recesses 2011, preferably for receiving round or flat connecting elements for the manufacture of cabinet furniture, can be made in several end faces of the smaller plates 201.Before such machining, at least one of the plates 201, 202 is always removed from the machine table 19, so that the corresponding end faces of a plate 201 to be machined are easily accessible. The workpiece 20 is held in Fig. 3 on slides 161 that move along the machine table 19; the slides 161 essentially correspond to the slides 221. In the embodiment according to Fig. 3, the slides can be provided with a slight stroke. The at least one tool 18, here a saw or milling cutter, can pass through the workpiece 20 either in a gap in front of the connecting elements 194 between the tubes 192, or through gaps 195 that run parallel to the tubes 192. This is advantageous when cutting, sawing, or milling the workpiece 20 to the smaller plates 201, 202.Due to the movable arrangement of the workpiece 20 in both horizontal and vertical directions, it can be positioned on the machine table 19 in such a way that corresponding gaps are always arranged at the areas of the workpiece 20 to be cut or sawn through. In the embodiment shown in Fig. 4, similar to Fig. 2, several workpieces 20' are held by holding means, here slides 221, along the central guide rail 22, as shown in Fig. 2. The guide rail 22 is designed here such that it has an arc-shaped deflection at both end faces, thus enabling a high-speed, continuous movement of the slides 221 on both sides of the guide rail 22. Decoupling the slides 221 is therefore unnecessary compared to the embodiment shown in Fig. 2, which speeds up the machining process. Furthermore, this embodiment allows the workpieces 20' to be returned to the workpiece exit side, which simplifies machine operation. In all other embodiments, any number, preferably two, of tool carriers 17 and / or tools 18 can be provided. Fig. 5 shows an exemplary embodiment of the present invention, for example according to Fig. 2, with the tool carrier 17 on which the handling device 27 is arranged, but which can optionally also be omitted, and a further, here second, tool carrier 17' on which the tool 18 is arranged. Thus, for example, the tool 18, which is mounted on the second tool carrier 17', which is first passed by the workpieces 20' on slide 221 along the direction of movement B', can machine the workpieces 20', and afterwards the handling device 27 can place the workpiece 20' onto a storage device 30, which, like the storage device 30', can be movable. In a particularly preferred embodiment, the tool 18 comprises, as mentioned, the drill and / or a saw tool.After processing, the slides 221 can transport the workpieces 20' back to the storage device 30. Fig. 6 shows a machine tool 10 with a machine table 19 made of tubes 192 like those in Figs. 2, 3, and 4. Unlike in those figures, however, a plate-shaped workpiece 20 is movable on the tubes 192 by means of a lifting device 161' which can be moved in an approximately vertical direction of movement B', in order to be divided into smaller plates 201' by means of the tool 18, here a saw. After the smaller plate 201 has been cut, the plate 20, held by the lifting device 161', is positioned vertically upwards at a predetermined distance so that a milling tool, suitable for attaching, for example, a profile with a larger diameter, can perform machining in the resulting space either on the upper narrow surface of the smaller plate and / or on the lower narrow surface of the plate 20. In the variant shown, the smaller plate 201 ' can be moved by means of the slides 221. At a point where the tool carrier 17 is closest to the machine table 19, the tool carrier 17 preferably has a maximum distance of 5 cm to 50 cm to the machine table 19 in all embodiments. For moving the workpieces 20, 20', a linear drive is preferably provided in all embodiments, which is not shown in the drawings. In all embodiments, the corresponding connecting element can preferably be inserted into the holes 2011 by means of at least one of the at least one tool. Reference symbol list 10 machine tool 11 lower frame part 111 Mounting plate 112 sleds 12 upper frame part 13 support frames 15 Support device 16a, b Guide rail 161 sleds 16T lifting device 17 tool carriers 17' second tool carrier 18 tools 19 machine table 191 recess 192 pipe 193 recess 194 Connecting element 195 space 20 workpieces 20' workpiece 201 smaller plate 20T smaller plate 2011 Hole 202 smaller plates 202' smaller plate 21 Support element 22 middle guide rail 22' middle guide rail 23 second guide rail 221 sleds 221 ' sled 27 Handling device 28 Handling device 30 storage device 30' storage device 34 tools 40 collection containers B, B' Direction of movement

Claims

Claims 1. Machine tool (10) for machining plate-shaped workpieces (20, 20') comprising a tool carrier (17) with at least one tool (18), wherein the machine tool (10) comprises a frame with a support device (15) having at least one substantially rectangular machine table (19) inclined at a support angle to the horizontal, and wherein at least one guide rail (16a) is held on the frame, wherein the tool carrier (17) is mounted on the at least one guide rail (16a) so as to be movable in a direction of movement along the at least one machine table (19), characterized in that a plurality of smaller plates (201, 202) can be cut out from larger plate-shaped workpieces (20, 20') by means of the at least one tool (18), wherein at least one handling device (27, 28) is mounted so as to be movable on the tool carrier (17) by means of which the smaller plates (201,202) can be removed from the machine table (19).

2. Machine tool (10) according to claim 1 , characterized in that at least one end face of the plates (201 , 202) can be machined by means of the at least one tool (18).

3. Machine tool (10) according to claim 2, characterized in that the at least one tool (18) comprises a tool for producing holes and / or recesses, for example a drill and / or a milling cutter, by means of which at least one hole can be drilled into at least one end face of at least one of the smaller plates (201 ).

4. Machine tool (10) according to one of the preceding claims, characterized in that the support angle is between 60° and 90°, preferably between 70° and 80°, between a surface of the machine table (19) facing the tool (18) and the horizontal.

5. Machine tool (10) according to one of the preceding claims, characterized in that the tool carrier (17) is a portal which extends perpendicular to the direction of movement over the at least one machine table (19).

6. Machine tool (10) according to one of the preceding claims, characterized in that the at least one tool (18) is movable along the portal over the at least one machine table (19).

7. Machine tool (10) according to one of the preceding claims, characterized in that the machine table (19) is designed as a grid or grating.

8. Machine tool (10) according to one of the preceding claims, characterized in that the frame has a lower frame part (11) for setting up the frame, at least two support frames (13) arranged substantially perpendicularly and spaced apart from each other, and an upper frame part (12), wherein the support frames (13) are each fixed to the lower and the upper frame part (11, 12), and wherein the support device (15) is fixed to and held on the lower and the upper frame part (11, 12), wherein the support frames (13) and the mounting plates (111) are fixed to each other by connecting means at least two contact surfaces designed as flange plates.

9. Machine tool (10) according to claim 8, characterized in that the support device (15) has at least two support elements (21) arranged in the direction of gravity in the lower area of ​​the machine table (19) for supporting the workpieces (20, 20').

10. Machine tool according to one of the preceding claims, characterized in that the workpieces (20, 20') can be mounted on the support device (15) in a manner movable along the guide rail (16a, 23) and / or at least one further guide rail (22).

11. Machine tool according to one of the preceding claims, characterized in that a central guide rail (22) for moving workpieces (20, 20') along the tool carrier (17) is formed on the machine table (19) above its lower edge.

12. Machine tool according to one of the preceding claims, characterized in that the machine table (19) has recesses (191, 193) on the surface of the machine table (19) facing the tool (18) and comprises a device for generating a vacuum between the workpiece (20, 20') and the recesses (191, 193), wherein the recesses and the device for generating the vacuum form a grid of Form vacuum segments by means of which the workpiece (20, 20') can be fixed to the machine table.

13. Machine tool according to claim 12, characterized in that the machine table (19) is formed from several tubes (192) which are arranged horizontally one above the other or vertically next to each other and which each comprise the recesses (193) which are holes in the tubes (192).

14. Machine tool according to claim 13, characterized in that the tubes (192) are connected to each other by connecting elements (194) which are located relatively far from the surface of the machine table (19) facing the tool (18), forming cutting gaps in which at least one of the at least one tool (18) can move between the tubes (193).

15. A method for machining a plate-shaped workpiece (20, 20') using a machine tool (10) according to one of the preceding claims, comprising the following steps: a) arranging the plate-shaped workpiece (20, 20') on the machine table (19) such that the workpiece (20, 20') and the machine table (19) are arranged substantially parallel to each other and the workpiece (20, 20') is supported by the machine table (19) at the support angle above the guide rail (16a); b) moving the tool carrier (17) along the guide rail (16a) and machining at least one end face of the workpiece (20, 20') by the at least one tool (18), wherein a plurality of smaller plates (201, 202) are cut out of the plate-shaped workpiece (20, 20'); c) Removing the smaller plates (201 , 202) from the machine table (19) using the handling device (27, 28).

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