Editing tool

Abstract

Machining tool for a device for machining flat workpieces, with a carrier element (130c, 330c, 340c, 350c, 360c, 370c) with a connecting element (130e) for connection to a drive shaft (150, 160) drivable by a drive unit, wherein the connecting element (130e) is designed for a rigid, rotationally fixed connection to the drive shaft (150, 160) and defines an axis of rotation (D) of the machining tool (110 to 148, 210 to 248, 330, 340, 350, 360, 370), wherein the support element (130c, 330c, 340c, 350c, 360c, 370c) is formed in a plane orthogonal to the axis of rotation (D) symmetrically with respect to a first axis of symmetry (S1) extending in the orthogonal plane and with respect to a second axis of symmetry (S2) extending in the plane, wherein the first and second axes of symmetry (S1, S2) intersect the axis of rotation (D), characterized in that the extension of the support element (130c, 330c, 340c, 350c, 360c, 370c) along the first axis of symmetry (S1) is longer than the extension of the support element (130c, 330c, 340c, 350c, 360c, 370c) along the second axis of symmetry (S2).

Description

[0001] The invention relates to a machining tool for a device for machining flat workpieces, comprising a carrier element with a connecting element for connection to a drive shaft drivable by a drive unit. The connecting element is designed for a rotationally fixed connection to the drive shaft and defines an axis of rotation of the machining tool. The carrier element is designed, in a plane orthogonal to the axis of rotation, symmetrical with respect to a first axis of symmetry running in the orthogonal plane and with respect to a second axis of symmetry running in the plane, wherein the first axis of symmetry and the second axis of symmetry intersect the axis of rotation. Furthermore, the invention relates to a device for machining flat workpieces with at least two machining tools.

[0002] Various devices for machining flat workpieces are known, in which rotating machining tools are used to machine the surface and / or edges of the workpiece to be machined. One such device is known, for example, from document DE 10 2007 022 194 B4. The machining unit of this device comprises machining heads arranged side by side in a row, with planetary head gears through which the cylindrical rotating machining tools of adjacent machining heads mesh, so that the machining circles of adjacent machining heads overlap. This allows the entire surface and / or all edges of the workpiece to be machined without the need for multiple machining units arranged one behind the other.

[0003] In other machining units of devices for machining flat workpieces, the cylindrical rotating machining tools are arranged in a row perpendicular to the machining direction of the workpieces to be machined. The entire machining unit can be moved back and forth transversely to the machining direction of the workpiece to avoid machining gaps between the tools.

[0004] Planetary head gears are relatively large and expensive. Replacing the machining tools is also complex. For devices where the entire machining unit is moved back and forth, an additional drive unit must be provided for this purpose. The machining unit itself includes the drive for driving the machining tools, so large masses must be moved back and forth.

[0005] Based on this, it is the object of the invention to provide a machining tool and a device for machining flat workpieces, in which a uniform machining of the edges of a workpiece is possible.

[0006] This object is achieved by a machining tool having the features of claim 1 and by a device having the features of claim 7. Advantageous further developments are specified in the dependent claims.

[0007] A machining tool having the features of claim 1 and a device for machining flat workpieces achieves the result that the machining tools can be arranged side by side such that their machining circles overlap. This makes it sufficient to provide a single row of machining tools arranged side by side to uniformly machine the entire surface and / or all edges of a flat workpiece. The longitudinal axes of the drive shafts connected to the machining tools or the axes of rotation of the machining tools are stationary. For height compensation and / or to adapt to the contours of the workpiece, individual drive shafts can be moved along their longitudinal axis together with the machining tool. This can be done, for example, as described in document DE 10 2021 111 672 A1.Alternatively or additionally, the entire machining unit can be moved toward and away from a machining plane in which the workpiece to be machined is located. This allows wear on the machining tools to be compensated for and / or the fixture to be adjusted to the height of the flat workpieces to be machined.

[0008] The processing tools enable a simple, cost-effective and space-saving construction of the device.

[0009] Overlapping of the machining circles of adjacent machining tools is achieved in particular by ensuring that the extension of the support element along the first axis of symmetry is longer than the extension of the support element along the second axis of symmetry. The connection of the connecting element of the machining tool to the drive shaft can be achieved via a screw connection, snap-in connection, clamp connection, and / or plug-in connection in a conventional manner. The support plate of the machining tool preferably has a substantially elongated basic shape, i.e., the length of the support plate is greater than its width.

[0010] The support element is rigidly connected to the connecting element, so that when the connecting element is connected to the drive shaft, the support element is not movable, in particular not pivotable, relative to the drive shaft.

[0011] It is advantageous if the side of the support element facing away from the connecting element is designed as a grinding tool, a brushing tool, or a chipping tool, or is connected to a grinding tool, brushing tool, or chipping tool. This allows for easy processing of the flat workpiece.

[0012] When designing the side of the support element facing away from the connecting element as a grinding tool, a brushing tool, or a chipping tool, the processing elements of the grinding tool (abrasive material), the brushing tool (bristles), or the chipping tool (chipping elements) can be rigidly connected to the support element. However, the processing elements themselves can be elastically deformable. This enables, in particular, uniform processing of the edges of the flat workpiece.

[0013] When connecting the side of the support element facing away from the connecting element to the grinding tool, brushing tool, or chipping tool, these can be rigidly connected to the support element. However, the processing elements of the grinding tool, brushing tool, or chipping tool themselves can be elastically deformable. This enables, in particular, uniform processing of the edges of the flat workpiece.

[0014] If the processing tool is designed as a grinding tool, a plurality of sanding sheets can be connected to the carrier element, wherein at least some of the sanding sheets are arranged in radial planes containing the axis of rotation, wherein support material, in particular support fleece, is preferably arranged between the sanding sheets. The sanding sheets can protrude from the carrier element perpendicularly in the direction of the workpiece to be machined. This enables good machining of the workpiece. In particular, the sanding sheets can easily adapt to the contour of the workpiece and machine the edges of the workpiece evenly. Preferably, as many of the sanding sheets connected to the carrier element as possible are arranged in radial planes containing the axis of rotation. For manufacturing reasons, in practice some of the sanding sheets connected to the carrier element are often not arranged exactly in these radial planes, but only approximately.However, it is desirable that all sanding sheets connected to the carrier element are arranged in these radial planes.

[0015] The sanding sheets are firmly or rigidly connected to the support element, meaning that the sanding sheets as a whole cannot be moved relative to the support element. In particular, the end of each sanding sheet that is firmly or rigidly connected to the support element cannot be moved or pivoted relative to the connecting element. This allows, in particular, the edges of the workpiece to be processed evenly.

[0016] If the processing tool is designed as a brushing tool, a plurality of bristles extending perpendicularly toward the workpiece to be processed can be connected to the carrier element. This enables good processing of the workpiece. In particular, the bristles can easily adapt to the contours of the workpiece and evenly process the edges.

[0017] The bristles are firmly or rigidly connected to the support element, meaning that the bristles as a whole cannot move relative to the support element. In particular, the end of each bristle that is firmly or rigidly connected to the support element cannot move or pivot relative to the connecting element. This allows, in particular, the edges of the workpiece to be processed evenly.

[0018] If the machining tool is designed as a chipping tool, a plurality of chipping elements extending vertically in the direction of the workpiece to be machined can be firmly or rigidly connected to the support element. These chipping elements can be designed as cylindrical chipping elements and are also referred to as chipping hammers. This allows for the simple and safe removal of slag that can form on the edges of a sheet metal blank during certain cutting processes. This allows the edges of the workpiece to be machined evenly.

[0019] The cutting elements are firmly or rigidly connected to the support element, meaning that the cutting elements cannot be moved relative to the support element as a whole. In particular, the end of each cutting element that is firmly or rigidly connected to the support element cannot be moved or pivoted relative to the connecting element. This allows, in particular, the edges of the workpiece to be machined evenly.

[0020] The sanding discs, bristles, or chipping elements of the processing tools are preferably designed to be elastically deformable during processing of flat workpieces and to be deflected in such a way that they are drawn over the edges and surface of the workpiece. This allows, in particular, the edges of the workpiece to be processed evenly.

[0021] In the device for machining the edges and surfaces of flat workpieces, at least two machining tools are connected to a drive shaft, each driven by a drive unit, in a rotationally fixed manner, at least in the direction of rotation of the drive shaft. The machining tools are each mounted on the machine frame by the drive shaft for rotation about a fixed axis of rotation perpendicular to the workpiece support. This enables a simple design of the device, since, in particular, no planetary heads or units for reciprocating the machining units and tools are required.

[0022] It is advantageous if the workpiece support comprises at least one transport unit that defines a transport plane in which the workpieces to be machined are transported in one transport direction. The transport unit comprises at least one transport element, which can comprise a conveyor belt or a conveyor roller, in particular a roller conveyor with multiple conveyor rollers. This allows the edges of the workpiece to be machined evenly.

[0023] It is also advantageous if the at least two drive shafts with the machining tools are arranged in a single row, mounted side by side in a support unit transverse to the transport direction and / or machining direction of the workpiece to be machined, wherein the support unit is preferably aligned parallel to the workpiece support. The support unit, the drive shafts, and the machining tools are components of a machining unit of the device. The machining unit can further comprise at least one drive unit for driving the drive shafts. This enables a compact design of the device and uniform machining of the edges.

[0024] It is particularly advantageous if the drive shafts are first drive shafts, if the two machining tools are two first machining tools, and if the device comprises at least two second machining tools according to one of claims 1 to 6. The second machining tools are each connected in a rotationally fixed manner to a second drive shaft drivable by means of a drive unit, at least in the drive direction of rotation of the drive shaft. The second machining tools are each rotatably mounted on the machine frame by one of the second drive shafts about a fixed axis of rotation perpendicular to the workpiece support.The at least two second drive shafts are arranged in a second row transversely to the transport and / or processing direction of the workpiece to be processed, mounted next to one another in a second carrier unit, wherein the second carrier unit is preferably arranged parallel to the workpiece support and in particular parallel to the first carrier unit. This provides two rows of processing tools arranged one behind the other in the processing direction, which enable dual and thus intensive processing of all areas of the flat workpiece with a simple device design. A processing unit of the device can comprise the first and the second carrier unit. This allows both rows of processing tools to be arranged compactly and, in particular, to be driven by means of just a single drive unit.

[0025] It may be advantageous if the first drive shafts with the first machining tools of the first row and the second drive shafts with the second machining tools of the second row have the same fixed distance from each other, and if the first drive shafts of the first row have a lateral offset transverse to the transport direction relative to the second drive shafts of the second row of half the distance between the drive shafts. This enables intensive machining of the flat workpiece with a simple device design.

[0026] It is also advantageous if the first machining tools of the first row and the second machining tools of the second row are arranged and driven in such a way that the machining circles of the first machining tools of the first row overlap with the machining circles of the second machining tools of the second row. Alternatively, a transport element, in particular a support roller, can be arranged between the machining tools of the first row and the machining tools of the second row. This enables a compact design of the device and reliable machining of the workpieces.

[0027] It is particularly advantageous if the drive shafts and the machining tools are arranged and designed next to one another in such a way that the effective spheres of their machining tools overlap, with the drive unit or units preferably driving all drive shafts with the machining tools in the same direction of rotation. This ensures reliable machining of both the edges and the surface of the workpiece.

[0028] Furthermore, it is advantageous if the processing tools are arranged and designed in such a way that the sanding discs, bristles, or chipping elements of the processing tools are elastically deformed during the processing of flat workpieces, and are thereby deflected and drawn over the edge and surface of the workpiece. This ensures that both the edges and the surface of the workpiece are processed reliably.

[0029] The workpiece support can comprise at least one transport unit with at least one transport element. The transport element can, in particular, comprise a conveyor belt or a plurality of conveyor rollers. The conveyor belt or conveyor rollers define a transport plane in which the workpieces are transported for processing. The drive shafts of the processing tools can be arranged above the transport plane or above a processing plane during processing of the workpiece, so that the processing tools contact at least the top side of the workpiece and the upper edges of the workpiece.

[0030] If the drive shafts of the machining tools are arranged below the transport plane during machining of the workpiece, the machining tools contact at least the underside and the lower edges of the workpiece. The workpiece can then be pressed against the machining tools by a pressure belt arranged above the machining tools or by pressure rollers arranged above the machining tools. The pressure belt and / or the pressure rollers can be driven so that the workpiece is guided past the machining tools in the machining direction. An adjustment unit can be provided by which the distance of the pressure belt or the pressure rollers from the machining plane and / or the transport plane can be adjusted depending on the thickness of the workpiece to be machined.In other embodiments, other pressure means may also be provided by which the workpiece to be machined is pressed against the machining tools.

[0031] In embodiments with a rotating pressure belt, in special embodiments this can be sucked in with the help of a vacuum unit such that it has a safe distance from the processing tools, at least in the area of ​​the processing tools arranged below the pressure belt. This means that the pressure belt does not sag in the area of ​​the processing tools to such an extent that it comes into contact with the processing tools. As an alternative to the vacuum unit, the rotating pressure belt can be arranged or held at a safe distance from the processing tools, at least in the area of ​​the processing tools arranged below the pressure belt, with the help of a magnet unit. This means that the pressure belt does not sag in the area of ​​the processing tools to such an extent that it comes into contact with the processing tools. For this purpose the pressure belt has in particular ferromagnetic components, in particular iron particles, or is designed as a steel belt.The magnetic unit is in particular an electromagnet, which is preferably only activated when there is no workpiece in the area of ​​the processing tools.

[0032] Adjacent machining tools arranged in a row transversely to the machining direction are arranged and driven in a synchronized manner such that the adjacent machining tools mesh, i.e. the machining circles of adjacent machining tools overlap.

[0033] The size of the machining tools and the gaps between the adjacent machining tools and between the machining tools and the transport elements are adapted to the size of the workpieces to be machined in such a way that the workpieces do not fall into the gaps even when the workpieces are machined from below.

[0034] A flat workpiece to be machined within the meaning of the invention is in particular a workpiece which is arranged during or for machining in such a way that its width and / or length are greater than its height.

[0035] Embodiments of the invention are explained in more detail below with reference to the figures, in which: Fig. 1 a schematic side view of a first device for machining flat workpieces; Fig. 2 a schematic perspective view of a first processing unit with first processing tools of the device according to Fig. 1; Fig. 3 a schematic side view of a second device for machining flat workpieces; Fig. 4 a schematic perspective view of a second processing unit with second processing tools of the device according to Fig. 3; Fig. 5 a schematic side view of a third device for machining flat workpieces; Fig. 6 a schematic perspective view of a first processing unit with first processing tools of the device according to Fig. 5; Fig. 7 a schematic side view of a fourth device for machining flat workpieces; Fig. 8 a schematic perspective view of a second processing unit with second processing tools of the device according to Fig. 7; Fig. 9 a schematic plan view of the first machining unit with machining tools arranged in two rows one behind the other; Fig. 10a some of the machining tools according to Fig. 9 with a rotation of the first row of machining tools by 10° counterclockwise and the second row of machining tools by 10° clockwise; Fig. 10b some of the machining tools Fig. 9 when the first row of machining tools and the second row of machining tools are rotated clockwise by 10° each; Fig. 11 is a schematic plan view of a further machining unit with machining tools arranged in two rows one behind the other, in which a support roller is arranged between the two rows; Fig. 12a part of the machining tools according to Fig. 11 with a rotation of the first row of machining tools by 10° counterclockwise and the second row of machining tools by 10° clockwise; Fig. 12b some of the machining tools according to Fig. 11 when the first row of machining tools and the second row of machining tools are rotated 10° clockwise Fig. 13a a part of the processing tools according to Fig. 9, wherein the contact areas of the machining tools at the front edge and the rear edge of the workpiece to be machined are shown schematically with a synchronous drive of the machining tools; Fig. 13b some of the machining tools according to Fig. 9, wherein the contact areas of the machining tools at the front edge and the rear edge of the workpiece to be machined are shown schematically with a counter-rotating drive of the machining tools in a clockwise direction; Fig. 14 a side view of the first machining unit with a breakout on a machining tool; Fig. 15 an enlarged sectional view of the machining tool arranged in the breakout; Fig. 16 a schematic plan view of a machining tool with a first basic shape; Fig. 17 a schematic side view of the machining tool according to Fig. 16; Fig. 18 a schematic plan view of a machining tool with a second basic shape; Fig. 19 a schematic side view of the machining tool according to Fig. 18; Fig. 20 a schematic plan view of a machining tool with a third basic shape; Fig. 21 a schematic side view of the machining tool according to Fig. 20; Fig. 22 a schematic plan view of a machining tool with a fourth basic shape; Fig. 23 a schematic side view of the machining tool according to Fig. 22; Fig. 24 a schematic plan view of a machining tool with a fifth basic shape; Fig. 25 a schematic side view of the machining tool according to Fig. 24; Fig. 26 a schematic plan view of a machining tool with a sixth basic shape; Fig. 27 a schematic side view of the machining tool according to Fig. 26; Fig. 28 a schematic view of the first machining tool according to the Fig. 5 and Fig. 6; and Fig. 29 a schematic view of the second machining tool according to the Fig. 7 and Fig. 8.

[0036] Fig. 1 shows a schematic side view of a first device 20 for machining flat workpieces. A workpiece 10 to be machined rests on a first belt conveyor 102 and is moved by means of the belt conveyor in the machining and transport direction P1 of a machining unit 16 with machining tools 110, 112 arranged in a row. A further belt conveyor 104 is provided to transport the workpiece away after machining by the machining unit 16. Pressure rollers are arranged above the machining unit 16, which are preferably driven by means of a drive unit and, when the workpiece 10 is machined by the machining unit 16, exert a pressing force on the workpiece 10 in the direction of the machining tools 110, 112 and a driving force in the machining direction P1.

[0037] The machining tools 110, 112 are each connected in a rotationally fixed manner to a drive shaft 160. The drive shafts 150 are connected via a gear 108, preferably via a gear transmission with spur gears, to a Fig. 5, not shown, of the machining unit 16 in such a way that all drive shafts 150 and thus all machining tools 110, 112 are driven at the same speed. Immediately adjacent machining tools 110, 112 are thus driven in a synchronized manner. The machining tools 110, 112 mesh, i.e., their machining circles overlap. For this purpose, immediately adjacent machining tools 110, 112 are arranged offset by 90° from one another, i.e., the machining tool 112 is arranged 90° around its axis of rotation in a clockwise direction P2 relative to the machining tool 110. The machining tools 110, 112 are connected in a rotationally fixed and rigid manner to their respective drive shaft 150 via a positive or non-positive connection.

[0038] As in Fig. 2, the center axes of the drive shafts 150 of the single row of machining tools 110 to 128 in this embodiment and thus the axes of rotation of the machining tools 110 to 128 are arranged in a first plane E2 orthogonal to the machining direction P1.

[0039] When the workpiece 10 is fed to the processing unit 16 with the aid of the belt conveyor 102, the height of the workpiece 10 is detected using a sensor unit (not shown), and the pressure rollers 170 are then moved upwards from the height determined using the sensor unit to enable correct processing of the workpiece 10. For this purpose, a control unit controls a drive unit to change the distance of the pressure rollers 170 from the transport plane E3 defined by the belt conveyor 102, starting from the determined height, such that the pressure rollers 170 are moved upwards before the workpiece 10 reaches the first pressure roller 170 serving as an infeed roller. The processing unit 16 can be moved with the aid of a drive unit (not shown) such that a processing plane defined by the upper edge of the processing tools 110 to 128 can be shifted relative to the transport plane E3.

[0040] Fig. 2 shows a schematic perspective view of the first processing unit 16 with the first processing tools 110 to 148 of the device 20 arranged in the single row according to Fig. 1. The processing tools 110 to 128 are designed as grinding tools, wherein a plurality of grinding blades are connected to a carrier element of the respective processing tool 110 to 128, which are arranged in radial planes containing the axis of rotation. Support material, in particular a supporting fleece, is preferably arranged between the grinding blades. One side of the grinding blades is fixed and thus rigidly connected to the carrier element of the processing tool 110 to 128. The processing tools 110 to 128 all have the same direction of rotation.

[0041] Fig. 3 shows a schematic side view of a second device 30 for machining flat workpieces 10. The second device 30 differs from the first device 20 by a second row of machining tools 130 to 148. In the machining direction P1, the second row is upstream of the first row in a plane E1 that is orthogonal to the transport plane E3 and to the transport direction P1. Between the machining tools 130 to 148 of the second row and the machining tools 110 to 128 of the first row, a support roller 28 is arranged, which serves to support and guide the workpiece 10 to be machined. The machining unit 26 can be moved with the aid of a drive unit (not shown) such that a machining plane defined by the upper edge of the machining tools 110 to 148 can be displaced relative to the transport plane E3. The support roller 26 is arranged in the transport plane E3, i.e.A tangent of the support roller lies in the transport plane E3. In other embodiments, the support roller 26 can be moved by means of a drive unit such that a tangent of the support roller 26 running parallel to the processing plane E3 can be arranged at a distance from the transport plane E3. The distance of the tangent to the transport plane E3 can thus be adjusted by means of the drive unit. Alternatively or additionally, it is possible to set the processing plane of the processing tools 130 to 148 of the first row and the processing plane of the processing tools 110 to 128 of the second row differently.

[0042] The remaining structure and function of the processing unit 26 are consistent with the processing unit 16 according to the Fig. 1 and Fig. 2. Likewise, the remaining structure and function of the second device 30 correspond to the first device 20 according to the Fig. 1 and Fig. 2. Elements with the same structure or function have the same reference numerals.

[0043] Fig. 4 shows a schematic perspective view of a second processing unit 26 with processing tools 110 to 148 of the second device 30 arranged one behind the other in two rows. Fig. 3.

[0044] In the first device 20 and the second device 30, the machining circles of adjacent machining tools 110 to 148 of each row overlap, so that there are no gaps between the machining areas of adjacent machining tools 110 to 148, so that during one machining of the workpiece 10, its surface and the edges of the workpiece 10 are completely machined by the machining tools 110 to 148 of only one row. The machining tools 110 to 148 of the first row and the second row all have the same direction of rotation.

[0045] In other embodiments, all machining tools 110 to 148 in one row have the same direction of rotation P2, while the machining tools 110 to 148 in the other row have the opposite direction of rotation. This allows the edges of the workpiece 10 to be machined relatively evenly.

[0046] As an alternative to the processing tools 110 to 148, the processing tools can also be designed as brushing tools, in which case a plurality of bristles projecting vertically in the direction of the workpiece 10 to be processed are firmly connected to a carrier element of each processing tool. As an alternative to the processing tools 110 to 148, the processing tools can also be designed as chipping tools, in which case a plurality of chipping elements projecting vertically in the direction of the workpiece 10 to be processed are firmly connected to a carrier element of each processing tool.

[0047] With the devices 20, 30, the workpiece 10 is machined from below, i.e., the underside and / or the lower edges of the workpiece 10 are machined using the machining tools 110 to 148. In other embodiments, the machining unit 16, 26 is arranged above the machining plane E3, and the workpiece 10 to be machined is conveyed below the machining unit 16, 26 for machining, for example, on a continuous belt conveyor 102 or on a roller conveyor. The planes E1 and E2 are orthogonal to the transport plane E3 and orthogonal to the machining and transport direction P1.

[0048] In other embodiments, individual drive shafts 150, 160 can be displaced along their longitudinal axes together with the machining tool 110 to 148, 210 to 248 for height compensation and / or adaptation to the contours of the workpiece 10. This can be done, for example, as described in document DE 10 2021 111 672 A1.

[0049] Fig. 5 shows a schematic side view of a third device 100 for machining flat workpieces. The workpiece 10 to be machined rests on the first belt conveyor 102 and is moved by means of it in the machining and transport direction P1 of a third machining unit 106 with machining tools 110, 112, 130 arranged in two rows. The further belt conveyor 104 is provided to transport the workpiece 10 away after machining by the machining unit 106. Pressure rollers are arranged above the machining unit 106, which are preferably driven by means of a drive unit and, during machining of the workpiece 10 by the machining unit 106, exert a pressing force on the workpiece 10 in the direction of the machining tools 110, 112, 130 as well as a driving force in the machining direction P1.

[0050] The machining tools 110, 112, 130 are each connected in a rotationally fixed manner to a drive shaft 150, 160. The drive shafts 150, 160 are connected via a gear 108, preferably via a gear transmission with spur gears, to a Fig. 5, not shown, of the machining unit 106 in such a way that all drive shafts 150, 160 and thus all machining tools 110, 112, 130 are driven at the same speed. Immediately adjacent machining tools 110, 112 are thus driven synchronously. The machining tools 110, 112 mesh, i.e., their machining circles overlap. For this purpose, immediately adjacent machining tools 110, 112 are arranged offset by 90° from one another, i.e., the machining tool 112 is arranged 90° around its axis of rotation in a clockwise direction P2 relative to the machining tool 110. The machining tools 110, 112 are connected in a rotationally fixed and rigid manner to their respective drive shafts 150, 160 via a positive or non-positive connection.

[0051] As in Fig. As can be seen in Figure 6, the center axes of the drive shafts 160 of the first row with machining tools 130 to 148, and thus the axes of rotation of the machining tools 130 to 148, are arranged in a first plane E1 orthogonal to the machining direction P1. The center axes of the drive shafts 150 of the second row with machining tools 110 to 128, and thus the axes of rotation of the machining tools 110 to 128, are arranged downstream of the plane E1 in a first plane E2 orthogonal to the machining direction P1.

[0052] In the present embodiment, a support and guide element 103 is arranged between the first belt conveyor 102 and the processing unit 106, through which the workpiece 10 is precisely fed to the processing unit 106. In other embodiments, the support and guide element 103 can be omitted.

[0053] When the workpiece 10 is fed to the processing unit 106 with the aid of the belt conveyor 102, the height of the workpiece 10 is detected using a sensor unit (not shown), and the pressure rollers 170 are then moved upwards from the height determined using the sensor unit to enable correct processing of the workpiece 10. For this purpose, a control unit controls a drive unit to change the distance of the pressure rollers 170 from the transport plane E3 defined by the belt conveyor 102, starting from the determined height, such that the pressure rollers 170 are moved upwards before the workpiece 10 reaches the first pressure roller 170 serving as an infeed roller. The processing unit 106 can be moved using a drive unit (not shown) such that a processing plane defined by the upper edge of the processing tools 110 to 148 can be shifted relative to the transport plane E3.

[0054] Fig. 6 shows a schematic perspective view of the third processing unit 106 with first processing tools 110 to 148 of the device 100 arranged one behind the other in two rows according to Fig. 1. The processing tools 110 to 148 are designed as grinding tools, with a plurality of grinding sheets being firmly connected to a carrier element of the respective processing tool 110 to 148, which are arranged in radial planes containing the axis of rotation. Support material, in particular a supporting fleece, is preferably arranged between the grinding sheets. One side of the grinding sheets is firmly and thus rigidly connected to the carrier element of the processing tool 110 to 148.

[0055] Fig. Fig. 7 shows a schematic side view of a fourth device 200 for machining flat workpieces 10. The fourth device 200 differs from the third device by the machining tools 210 to 248 of the machining unit 206. The remaining structure and function of the machining unit 206 are consistent with the machining unit 106 according to the Fig. 5 and Fig. 6. Likewise, the remaining structure and function of the fourth device 200 correspond to the third device 100 according to the Fig. 5 and Fig. 6. Elements with the same structure or function have the same reference numerals.

[0056] Fig. Fig. 8 shows a schematic perspective view of a fourth processing unit 206 with second processing tools 210 to 248 arranged one behind the other in two rows of the fourth device 200 according to Fig. 7. The machining tools 210 to 248 are designed as cutting tools, with a plurality of cutting elements projecting perpendicularly in the direction of the workpiece to be machined being firmly connected to a carrier element of the respective machining tool 210 to 248. One of these stop elements is designated by reference numeral 211, for example.

[0057] In the third device 100 and the fourth device 200, the machining circles of adjacent machining tools 110 to 148, 210 to 248 of each row overlap, so that there are no gaps between the machining areas of adjacent machining tools 110 to 148, 210 to 248, so that during machining of the workpiece 10, its surface and the edges of the workpiece 10 are completely machined by the machining tools 110 to 148 of only one row. The machining tools 110 to 148, 210 to 248 of the first row and the second row all have the same direction of rotation.

[0058] In other embodiments, all machining tools 110 to 148, 210 to 248 of one row have the same direction of rotation P2 and the machining tools 110 to 148, 210 to 248 of the other row have the opposite direction of rotation.

[0059] As an alternative to the processing tools 110 to 148, 210 to 248, the processing tools can also be designed as brushing tools, wherein a plurality of bristles projecting vertically in the direction of the workpiece 10 to be processed are then firmly connected to a carrier element of each processing tool.

[0060] In the devices 100, 200, the workpiece 10 is machined from below, i.e., the underside and / or the lower edges of the workpiece 10 are machined using the machining tools 110 to 148, 210 to 248. In other embodiments, the machining unit 106, 206 is arranged above the transport plane E3, and the workpiece 10 to be machined is conveyed below the machining unit 106, 206 for machining, for example, on a continuous belt conveyor 102 or on a roller conveyor. The planes E1 and E2 are orthogonal to the transport plane E3 and orthogonal to the machining and transport direction P1.

[0061] In other embodiments, individual drive shafts 150, 160 can be displaced along their longitudinal axes together with the machining tool 110 to 148, 210 to 248 for height compensation and / or adaptation to the contours of the workpiece 10. This can be done, for example, as described in document DE 10 2021 111 672 A1.

[0062] The processing units 106, 206 can each be moved with the aid of a drive unit (not shown) such that a processing plane defined by the upper edge of the processing tools 110 to 148, 210 to 248 can be displaced relative to the transport plane E3. Alternatively, it is also possible to set the processing plane of the processing tools 130 to 148, 230 to 248 of the first row and the processing plane of the processing tools 110 to 128, 210 to 228 of the second row differently.

[0063] Fig. 9 shows a schematic plan view of the third machining unit 106 with machining tools 110 to 148 arranged one behind the other in two rows in an exemplary starting position. The distance between the rotational axes D of all adjacent machining tools 110 to 128; 130 to 148 of each row is the same. Thus, the rotational axes D of adjacent machining tools 130 to 148 of the first row have the same distance transverse to the machining direction P1 as the rotational axes D of adjacent machining tools 110 to 128 of the first row. The distance between the plane E1 and the plane E2 is equal to the distance between adjacent machining tools 110, 122; 130, 132. In other embodiments, the planes E1 and E2 are spaced apart by a greater distance than the distance between adjacent machining tools 110, 122; 130, 132. The two rows have a lateral offset of half the distance of the rotary axes of adjacent machining tools 110 to 128, 130 to 148.As a result, the rotational axis D of the machining tool 130 is arranged centrally between the rotational axes D of the machining tools 110, 112, as viewed in the transport direction P1. This can be achieved, in particular, by projecting the rotational axes D of the machining tools 130 to 148 into the plane E2, in which the rotational axes D of the machining tools 110 to 128 of the second row are arranged.

[0064] Fig. 10a shows a part of the machining tools 110 to 116, 130 to 136 after Fig. 9 when the machining tools 130 to 136 of the first row are rotated from the Fig. 9 shown starting position by 10° counterclockwise and the machining tools 110 to 116 of the second row from the Fig. 9 shown starting position by 10° clockwise. Fig. 10b shows a part of the machining tools 110 to 116, 130 to 136 after Fig. 9 upon rotation of the machining tools 130 to 136 of the first row and the machining tools 110 to 116 of the second row from the Fig. 9 shown starting position by 10° clockwise. Furthermore, the machining circles of the machining tools 110 to 116, 130 to 136 are Fig. 10a and Fig. 10b is designated by the reference symbol K.

[0065] Fig. Figure 11 shows a schematic plan view of the further processing unit 306 with processing tools 110 to 148 arranged in two rows one behind the other. In the processing unit 306, a freely rotatably mounted support roller 308 is arranged between the two rows. In other embodiments, the support roller is driven and / or several support rollers 308 or a belt conveyor are arranged between the two rows. The processing unit 306 essentially corresponds to the processing unit 26 according to Fig. 3 agree.

[0066] Fig. 12a shows a part of the machining tools 110 to 116, 130 to 136 according to Fig. 11 upon rotation of the machining tools 130 to 136 of the first row by 10° counterclockwise and of the machining tools 110 to 116 of the second row by 10° clockwise, wherein the support roller 308 is arranged between the machining tools 110 to 116, 130 to 136 of the two rows.

[0067] Fig. 12b shows a part of the machining tools 110 to 116, 130 to 136 after Fig. 11 upon rotation of the machining tools 130 to 136 of the first row and the machining tools 110 to 116 of the second row by 10° in a clockwise direction, wherein the support roller 308 is arranged between the machining tools 110 to 116, 130 to 136 of the two rows.

[0068] Fig. 13a shows a part of the machining tools 110 to 116 of the second row after Fig. 9, wherein the contact areas of the machining tools 110 to 116 are schematically represented by thick solid lines at the front edge of the workpiece 10 to be machined and by dotted lines at the rear edge of the workpiece 10 to be machined, with a concurrent drive of the machining tools 110 to 116 in the clockwise direction P2. Thus, the edges of the workpiece 10 are machined evenly.

[0069] Fig. 13b shows a part of the machining tools 110 to 116 of the second row after Fig. 9, wherein the contact areas of the machining tools 110 to 116 are schematically represented by thick solid lines on the front edge of the workpiece 10 to be machined and by dotted lines on the rear edge of the workpiece 10 to be machined with a counter-rotating drive of the machining tools P2, P3.

[0070] Fig. 14 shows a side view of the third machining unit 106 with a breakout on the machining tool 130. Fig. 15 shows an enlarged sectional view of the machining tool 130 arranged in the cutout. The machining tool is connected to the drive shaft 160 by a screw 130a. For this purpose, the screw 130a is screwed through an opening 130b into an internal thread 160a formed in a front opening of the drive shaft 160. The screw 130a and the opening 130b form a connecting element 130e, through which a carrier plate 130c of the machining tool 130 can be rigidly and thus also rotationally connected to the drive shaft 160. In the present embodiment, the connection between the drive shaft 160 and the machining tool 130 is established via a force-locking connection. In other embodiments, a form-locking connection can also be provided for connecting the drive shaft 160 and the machining tool 130.

[0071] Fig. 16 shows a schematic plan view of the machining tool 130 and Fig. 17 shows a schematic side view of the machining tool 130. The support plate 130c of the machining tool 130 has a first elliptical basic shape with a length L and a width B. The width B is 50% of the length. In other embodiments, the width has a value in the range of 30% to 60% of the length. The support plate 130c is symmetrical with respect to both the axis of symmetry S1 and the axis of symmetry S2. The axes of symmetry S1, S2 extend in a plane orthogonal to the axis of rotation D, which extends through the support plate 130c. Both the axis of symmetry S1 and the axis of symmetry S2 intersect the axis of rotation D at an angle of 90°.

[0072] Fig. 18 shows a schematic plan view of a machining tool 330 and Fig. 19 shows a schematic side view of the machining tool 330. A carrier plate 330c of the machining tool 330 has a second basic shape with the length L and the width B. The width B is 50% of the length. In other embodiments, the width has a value in the range of 30% to 60% of the length. The carrier plate 330c is symmetrical to both the axis of symmetry S1 and the axis of symmetry S2. The axes of symmetry S1, S2 run in a plane orthogonal to the axis of rotation D, which plane runs through the carrier plate 330c. Both the axis of symmetry S1 and the axis of symmetry S2 intersect the axis of rotation D at an angle of 90°. The second basic shape has a rectangular central section, to which semicircular cuts adjoin on both sides in the longitudinal direction.

[0073] Fig. 20 shows a schematic plan view of a machining tool 340 and Fig. 21 shows a schematic side view of the machining tool 340. A carrier plate 340c of the machining tool 340 has a third basic shape with the length L and the width B. The width B is 50% of the length. In other embodiments, the width has a value in the range of 30% to 60% of the length. The carrier plate 340c is symmetrical to both the axis of symmetry S1 and the axis of symmetry S2. The axes of symmetry S1, S2 run in a plane orthogonal to the axis of rotation D, which runs through the carrier plate 340c. Both the axis of symmetry S1 and the axis of symmetry S2 intersect the axis of rotation D at an angle of 90°. The third basic shape has a rectangular central section, to which trapezoidal cuts taper towards the ends on both sides in the longitudinal direction.

[0074] Fig. 22 shows a schematic plan view of a machining tool 350 and Fig. 23 shows a schematic side view of the machining tool 350. A carrier plate 350c of the machining tool 350 has a fourth basic shape with the length L and the width B. The width B is 50% of the length. In other embodiments, the width has a value in the range of 30% to 60% of the length. The carrier plate 350c is symmetrical to both the axis of symmetry S1 and the axis of symmetry S2. The axes of symmetry S1, S2 run in a plane orthogonal to the axis of rotation D, which runs through the carrier plate 350c. Both the axis of symmetry S1 and the axis of symmetry S2 intersect the axis of rotation D at an angle of 90°. The fourth basic shape has a rectangular central section, to which triangular cuts adjoin in the longitudinal direction on both sides, tapering towards the ends. The triangular cuts are equilateral or at least isosceles.

[0075] Fig. 24 shows a schematic plan view of a machining tool 360 and Fig. 25 shows a schematic side view of the machining tool 360. A support plate 360c of the machining tool 360 has a fifth basic shape with the length L and the width B. The width B is 50% of the length. In other embodiments, the width has a value in the range of 30% to 60% of the length. The support plate 360c is symmetrical with respect to both the axis of symmetry S1 and the axis of symmetry S2. The axes of symmetry S1, S2 extend in a plane orthogonal to the axis of rotation D, which plane passes through the support plate 360c. Both the axis of symmetry S1 and the axis of symmetry S2 intersect the axis of rotation D at an angle of 90°. The fifth basic shape is rectangular.

[0076] Fig. 26 shows a schematic plan view of a machining tool 370 and Fig. 27 shows a schematic side view of the machining tool 370. A carrier plate 370c of the machining tool 370 has a sixth basic shape with the length L and the width B. The width B at the axis of symmetry S2 is 25% of the length. In other embodiments, the width at the axis of symmetry has a value in the range of 10% to 50% of the length. The carrier plate 370c is symmetrical to both the axis of symmetry S1 and the axis of symmetry S2. The axes of symmetry S1, S2 run in a plane orthogonal to the axis of rotation D, which plane runs through the carrier plate 370c. Both the axis of symmetry S1 and the axis of symmetry S2 intersect the axis of rotation D at an angle of 90°. The sixth basic shape has the outline of the number 8. The maximum width B2 of the carrier plate 370c has a value in the range of 30% to 60% of the length L.

[0077] In the case of the processing tools 330 to 370, other processing means, such as chipping means or chipping pins 211 and / or bristles, can be connected to the respective carrier plates 330c to 370c instead of the grinding sheets 130d or in addition to the grinding sheets 130d.

[0078] Fig. 28 shows a schematic view of the first machining tool 130 according to the Fig. 5 and Fig. 6. In Fig. Figure 28 clearly shows the arrangement of the sanding discs 130d, which protrude perpendicularly from the support plate 130c in the direction of the workpiece 10 to be machined and are connected to the support plate. In other embodiments, a supporting fleece is also arranged between the sanding discs 130d.

[0079] Fig. 29 shows a schematic view of the second machining tool 230 according to the Fig. 7 and Fig. 8. In Fig.Figure 29 clearly shows the arrangement of the cylindrical cutting elements 211, which protrude perpendicularly from the support plate 130c in the direction of the workpiece 10 to be machined and are connected to the support plate. These elements are also referred to as cutting pins. In other embodiments, the cutting pins can also have a different shape, in particular a different cross-section.

[0080] All of the basic shapes of the machining tools shown can be used in a device for machining flat workpieces. For the machining tools in the embodiments shown, the length L is greater than the width B and greater than the maximum width B2.

[0081] In embodiments in which the drive shafts 150, 160 of the machining tools 110 to 148, 210 to 248 are arranged below the transport plane E3 during the machining of the workpiece 10, the machining tools 110 to 148, 210 to 248 contact at least the underside and the lower edges of the workpiece 10. The workpiece 10 can then be pressed against the machining tools 110 to 148, 210 to 248 by a pressure roller 170 arranged above the machining tools 110 to 148, 210 to 248 or by at least one pressure belt arranged above the machining tools 110 to 148, 210 to 248. The pressure belt and / or the pressure rollers 170 can be driven so that the workpiece 10 is guided past the processing tools 110 to 148, 210 to 248 in the processing direction P1.An adjustment unit may be provided by which the distance of the pressure belt or the pressure rollers 170 from the processing plane and / or the transport plane E3 can be adjusted depending on the thickness of the workpiece 10 to be processed. In other embodiments, other pressure means may also be provided by which the workpiece 10 to be processed is pressed against the processing tools 110 to 148, 210 to 248.

[0082] In embodiments with a revolving pressure belt, in special embodiments, this can be sucked in with the aid of a vacuum unit in such a way that it has a safe distance from the processing tools 110 to 148, 210 to 248, at least in the area of ​​the processing tools 110 to 148, 210 to 248 arranged below the pressure belt. As a result, the pressure belt does not sag in the area of ​​the processing tools 110 to 148, 210 to 248 to such an extent that it contacts the processing tools 110 to 148, 210 to 248. As an alternative to the vacuum unit, the circulating pressure belt can be arranged or held at a safe distance from the processing tools 110 to 148, 210 to 248, at least in the area of ​​the processing tools 110 to 148, 210 to 248 arranged below the pressure belt, by means of a magnet unit.As a result, the pressure belt in the area of ​​the processing tools 110 to 148, 210 to 248 does not sag to the extent that it contacts the processing tools 110 to 148, 210 to 248. For this purpose, the pressure belt has, in particular, ferromagnetic components, in particular iron particles, or is designed as a steel belt. The magnet unit is, in particular, an electromagnet, which is preferably only activated when there is no workpiece in the area of ​​the processing tools 110 to 148, 210 to 248. List of reference symbols 10 Workpiece 20, 30, 100, 200 device 102, 104 Belt conveyors 103 Support and guide element 16, 26, 106, 206, 306 processing unit 108 gearboxes 110 to 148, 210 to 248, 330, 340, 350, 360, 370 machining tool 111 tapping pin 130a screw 130b opening 130c, 330c, 340c, 350c, 360c, 370c carrier plate 130d sanding sheet 130e connecting element 150, 160 drive shaft 160a internal thread 162, 164 drive motor 170 pressure roller 28, 308 support roller P1 Transport and processing direction P2 Clockwise rotation P3 Counterclockwise rotation E1, E2, E3 levels D axis of rotation S1, S2 symmetry axis L length B Width K processing circle QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] DE 10 2007 022 194 B4

[0002] DE 10 2021 111 672 A1 [0007, 0048, 0061]

Claims

[1] Machining tool for a device for machining flat workpieces, with a carrier element (130c, 330c, 340c, 350c, 360c, 370c) with a connecting element (130e) for connection to a drive shaft (150, 160) drivable by a drive unit, wherein the connecting element (130e) is designed for a rigid, rotationally fixed connection to the drive shaft (150, 160) and defines an axis of rotation (D) of the machining tool (110 to 148, 210 to 248, 330, 340, 350, 360, 370), wherein the support element (130c, 330c, 340c, 350c, 360c, 370c) is formed in a plane orthogonal to the axis of rotation (D) symmetrically with respect to a first axis of symmetry (S1) extending in the orthogonal plane and with respect to a second axis of symmetry (S2) extending in the plane, wherein the first and second axes of symmetry (S1, S2) intersect the axis of rotation (D), characterized bythat the extension of the support element (130c, 330c, 340c, 350c, 360c, 370c) along the first axis of symmetry (S1) is longer than the extension of the support element (130c, 330c, 340c, 350c, 360c, 370c) along the second axis of symmetry (S2). [2] Machining tool according to claim 1, characterized by that the carrier element (130c, 330c, 340c, 350c, 360c, 370c) has a substantially elongated basic shape. [3] Machining tool according to one of the preceding claims, characterized by that the side of the carrier element (130c, 330c, 340c, 350c, 360c, 370c) facing away from the connecting element is designed as a grinding tool, as a brushing tool or as a chipping tool or is firmly, preferably rigidly, connected to a grinding tool, brushing tool or chipping tool. [4] Machining tool according to one of the preceding claims, characterized bythat the processing tool (110 to 148, 210 to 248, 330, 340, 350, 360, 370) is designed as a grinding tool (110 to 148), wherein a plurality of grinding sheets (130d) are firmly connected to the carrier element (130c, 330c, 340c, 350c, 360c, 370c), which are arranged in radial planes containing the axis of rotation (D), wherein support material, in particular support fleece, is preferably arranged between the grinding sheets (130d). [5] Machining tool according to one of the preceding claims, characterized by that the processing tool (110 to 148, 210 to 248, 330, 340, 350, 360, 370) is designed as a brushing tool, wherein a plurality of bristles projecting perpendicularly in the direction of the workpiece (10) to be processed are firmly connected to the carrier element (130c, 330c, 340c, 350c, 360c, 370c). [6] Machining tool according to one of the preceding claims, characterized bythat the machining tool (110 to 148, 210 to 248, 330, 340, 350, 360, 370) is designed as a cutting tool (210 to 248), wherein a plurality of cutting elements (111) projecting perpendicularly in the direction of the workpiece (10) to be machined are firmly connected to the carrier element (130c, 330c, 340c, 350c, 360c, 370c). [7] Device for machining flat workpieces, comprising a machine frame with a workpiece support (102) and at least two machining tools (110 to 148, 210 to 248, 330, 340, 350, 360, 370) according to one of the preceding claims, wherein the machining tools (110 to 148, 210 to 248, 330, 340, 350, 360, 370) are each rigidly connected to a drive shaft (150, 160) which can be driven by means of a drive unit, at least in the drive direction of rotation (P2, P3) of the drive shaft (150, 160), wherein the machining tools (110 to 148, 210 to 248, 330, 340, 350, 360, 370) are each rotatably mounted on the machine frame by the drive shaft (150, 160) about a stationary axis of rotation (D) perpendicular to the workpiece support (102), and wherein the workpiece support comprises at least one transport unit (102, 104), which defines a transport plane (E3) in which the workpiece (10) is transported for machining, wherein the drive shafts (150, 160) of the machining tools (110 to 148, 210 to 248, 330, 340, 350, 360, 370) are arranged below the transport plane (E3) during machining of the workpiece (10). [8] Device according to claim 7, characterized by that the workpiece support comprises at least one transport unit (102, 104, 170) which defines a transport plane (E3) in which the workpieces (10) to be machined are transported for machining in a transport direction (P1). [9] Device according to claim 8, characterized by that the at least two drive shafts (150, 160) with the machining tools (110 to 148, 210 to 248, 330, 340, 350, 360, 370) are arranged in a single row transversely to the transport direction (P1) of the workpiece (10) to be machined, next to one another in a carrier unit (106, 206), wherein the carrier unit (106, 206) is preferably arranged parallel to the workpiece support (102). [10] Device according to claim 9, characterized bythat the drive shafts are first drive shafts (160), that the two machining tools (130 to 148, 230 to 248) are two first machining tools (130 to 148, 230 to 248), that the device (20, 30, 100, 200) comprises at least two second machining tools (110 to 128, 210 to 228) according to one of claims 1 to 6, that the second machining tools (110 to 128, 210 to 228) are each rigidly connected to a second drive shaft (150) drivable by means of a drive unit (162, 164), at least in the drive direction of rotation of the drive shaft (150), that the second machining tools (110 to 128, 210 to 228) are each rotatably mounted on the machine frame by one of the second drive shafts (150) about a stationary axis of rotation (D) perpendicular to the workpiece support (102), and that the at least two second drive shafts (150) are arranged in a second row transversely to the transport direction (P1) of the workpiece (10) to be machined, next to one another in a second carrier unit, wherein the second carrier unit is preferably arranged parallel to the workpiece support (102). [11] Device according to claim 10, characterized by that the first drive shafts with the first machining tools (130 to 148, 230 to 248) of the first row and the second drive shafts (150) with the second machining tools (110 to 128, 210 to 228) of the second row have the same fixed distance from one another and the first drive shafts (160) of the first row have a lateral offset transversely to the transport direction of half the distance between the drive shafts (150, 160) compared to the second drive shafts (150) of the second row. [12] Device according to claim 10 or 11, characterized bythat the first processing tools (130 to 148, 230 to 248) of the first row and the second processing tools (110 to 128, 210 to 228) of the second row are arranged and driven in such a way that the processing circles (K) of the first processing tools (110 to 128, 210 to 228) of the first row overlap with the processing circles (K) of the second processing tools (110 to 128, 210 to 228) of the second row or that a transport element (308), in particular a support roller (308), is arranged between the processing tools (110 to 128, 210 to 228) of the first row and the processing tools (130 to 148, 230 to 248) of the second row. [13] Device according to one of claims 7 to 12, characterized bythat the drive shafts and the machining tools (110 to 148, 210 to 248, 330, 340, 350, 360, 370) are arranged and designed next to one another in such a way that the spheres of action (K) of adjacent machining tools (110 to 148, 210 to 248, 330, 340, 350, 360, 370) overlap, wherein the drive unit or the drive units (162, 164) preferably drive all drive shafts (150, 160) with the machining tools (110 to 148, 210 to 248, 330, 340, 350, 360, 370) in the same direction of rotation (P1). [14] Device according to one of claims 7 to 13, characterized bythat the processing tools (110 to 148, 210 to 248, 330, 340, 350, 360, 370) are arranged and designed such that the grinding sheets (130d) or bristles or chipping elements of the processing tools (110 to 148, 210 to 248, 330, 340, 350, 360, 370) are deflected during the processing of the flat workpieces (10) and are pulled over the edge and the surface of the workpiece (10).

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