TOOL FOR MATCHING AN OBJECT

Abstract

The invention relates to a tool for machining an object, which tool has a multiplicity of fingers arranged in layers, wherein the fingers are spaced apart from one another within the layers.

Claims

1. A tool for machining an object, having a multiplicity of finger layers which each extend in a layer area, wherein the finger layers are arranged one behind another in such a manner that the layer areas of adjacent finger layers of the finger layers overlap at least in regions, wherein each finger layer has a plurality of fingers, wherein the fingers of the finger layers are bendable from an undeflected state in a direction standing on the layer area of the corresponding finger layer, wherein the fingers of the finger layers are each of planar arrangement, and, in the undeflected state, extend in the corresponding layer area, wherein, in the undeflected state, adjacent fingers of the same finger layer are spaced apart from one another by a distance greater than zero.

2. The tool as claimed in claim 1, wherein the fingers of the same finger layer are elastically bendable independently of one another from the undeflected state.

3. The tool as claimed in claim 1, wherein there is no material between the fingers of adjacent finger layers of the finger layers.

4. The tool as claimed in claim 1, wherein, in the undeflected state, the fingers of the same finger layer each extend parallel to one another.

5. The tool as claimed in claim 1, wherein the fingers of at least some of the finger layers are arranged in a projection onto a finger layer adjacent to the finger layers in the distances between the fingers or next to the fingers of said adjacent finger layer.

6. The tool as claimed in claim 1, wherein the distance between adjacent fingers of the same layer is greater than a width of said fingers in a direction in which said fingers are adjacent.

7. The tool as claimed in claim 1, wherein the fingers of at least some of the finger layers in a projection onto a finger layer adjacent to this finger layer in a direction perpendicular to the surface thereof are arranged in a manner overlapping with the fingers of said adjacent finger layer.

8. The tool as claimed in claim 7, wherein the fingers of two, three, four or more of the finger layers overlap in a projection in a direction perpendicular to one of said finger layers onto a common plane.

9. The tool as claimed in claim 1, wherein adjacent finger layers of the finger layers directly border one another or are spaced apart from one another at a distance of one thickness or two, three or more thicknesses of the finger layers.

10. The tool as claimed in claim 1, wherein, in the undeflected state, the layer areas are planar.

11. The tool as claimed in claim 1, wherein the finger layers enclose an angle of greater than zero degrees and smaller than 180 degrees with a line along which the finger layers are arranged one behind another.

12. The tool as claimed in claim 11, wherein the fingers each have at least one grinding and/or abrasive surface which lies parallel to that area in which the corresponding finger extends flat.

13. The tool as claimed in claim 12, wherein the fingers are configured as grinding means on a base, wherein the grinding means is applied to the grinding and/or abrasive surface.

14. The tool as claimed in claim 1, wherein the fingers have cotton, polyester or polycotton as the base.

15. The tool as claimed in claim 1, wherein adjacent finger layers of the finger layers are configured in such a manner that said finger layers placed one above another completely fill a rectangular area.

16. The tool as claimed in claim 1, wherein a length of the fingers in a direction perpendicular to that direction in which the fingers of the same finger layer are arranged next to one another and perpendicularly to that direction in which the finger layers are arranged one behind another is greater than or equal to 20 mm, and/or is smaller than or equal to 150 mm.

17. The tool as claimed in claim 1, wherein a width of the fingers in that direction in which the fingers of the same layer are arranged next to one another is greater than or equal to 1 mm, and/or smaller than or equal to 20 mm.

18. The tool as claimed in claim 1, wherein all of the finger layers are arranged one behind another parallel to one another and an area, which is spanned by the finger layers, perpendicular to the layer areas is rectangular.

19. The tool as claimed in claim 18, wherein the tool in that direction in which the fingers of the same layers are arranged next to one another has a width of greater than or equal to 20 mm, and/or smaller than or equal to 100 mm.

20. The tool as claimed in claim 18, wherein the tool in that direction in which the finger layers are arranged one behind another has a depth of greater than or equal to 30 mm, and/or smaller than or equal to 70 mm.

21. The tool as claimed in claim 1, wherein the finger layers are arranged one behind another along a closed circular line or a segment of a circular line, wherein the layer areas stand on the circular line, and wherein the fingers stand perpendicularly on the area of a circle described by the circular line.

22. The tool as claimed in claim 21, wherein, in addition, a multiplicity of further finger layers are arranged along a further closed circular line or a segment of a further circular line, wherein the further circular line is arranged concentrically with respect to said circular line and has a greater or smaller radius than said circular line.

23. The tool as claimed in claim 21, wherein the tool has a diameter of greater than or equal to 50 mm, and/or smaller than or equal to 1500 mm.

24. The tool as claimed in claim 21, wherein the finger layers in that direction in which the fingers of the same layers are arranged next to one another has a width of greater than or equal to 15 mm, and/or smaller than or equal to 100 mm.

25. The tool as claimed in claim 21, wherein a multiplicity of the finger layers are combined into in each case one block which preferably in that direction in which the finger layers are arranged one behind another has a depth of greater than or equal to 20 mm, and/or smaller than or equal to 70 mm.

26. The tool as claimed in claim 1, wherein the finger layers are arranged one behind another along a closed circular line, wherein the layer areas stand perpendicularly on the circular line, and wherein the fingers extend with their longitudinal direction radially with respect to an axis which runs through a center point of the circular line and stands perpendicularly on the circular line.

27. The tool as claimed in claim 26, wherein a diameter of the tool in a direction radially with respect to the circular line is greater than or equal to 50 mm, and/or smaller than or equal to 400 mm.

28. The tool as claimed in claim 26, wherein a width of the tool in a direction perpendicular to the closed circular line is greater than or equal to 20 mm, and/or smaller than or equal to 2500 mm.

29. The tool as claimed in claim 1, wherein at least some or all of the fingers have at least one slot.

30. The tool as claimed in claim 1, wherein the tool is a tool for deburring and/or rounding edges of a workpiece, and/or is a deburring and/or rounding tool.

31. A method for removing secondary burs on an edge of a workpiece and/or for rounding an edge of a workpiece, using a tool for machining an object, having a multiplicity of finger layers which each extend in a layer area, wherein the finger layers are arranged one behind another in such a manner that the layer areas of adjacent finger layers of the finger layers overlap at least in regions, wherein each finger layer has a plurality of fingers, wherein the fingers of the finger layers are bendable from an undeflected state in a direction standing on the layer area of the corresponding finger layer, wherein the fingers of the finger layers are each of planar arrangement, and, in the undeflected state, extend in the corresponding layer area, wherein, in the undeflected state, adjacent fingers of the same finger layer are spaced apart from one another by a distance greater than zero, the method comprising: moving the tool relative to the workpiece over the edge such that the finger layers brush the edge, and therefore, by means of the brushing of the edge by the finger layers, a secondary bur on the edge is removed and/or the edge is rounded.

32. A method for deburring and rounding an edge of a workpiece, using a tool for machining an object, having a multiplicity of finger layers which each extend in a layer area, wherein the finger layers are arranged one behind another in such a manner that the layer areas of adjacent finger layers of the finger layers overlap at least in regions, wherein each finger layer has a plurality of fingers, wherein the fingers of the finger layers are bendable from an undeflected state in a direction standing on the layer area of the corresponding finger layer, wherein the fingers of the finger layers are each of planar arrangement, and, in the undeflected state, extend in the corresponding layer area, wherein, in the undeflected state, adjacent fingers of the same finger layer are spaced apart from one another by a distance greater than zero, the method comprising: moving the tool relative to the workpiece over the edge such that the finger layers brush the edge, and therefore, by means of the brushing of the edge by the finger layers, a primary bur on the edge is removed and the edge is rounded.

33. The method as claimed in claim 31, wherein the workpiece is a metallic workpiece.

Description

[0060] In the figures:

[0061] FIG. 1 shows a cylindrical configuration of a tool according to the invention,

[0062] FIG. 2 shows a plate-like configuration of a tool according to the invention,

[0063] FIG. 3 shows a block-shaped configuration of a tool according to the invention,

[0064] FIG. 4 shows a plate-like configuration of a tool according to the invention in a top view,

[0065] FIG. 5 shows a plate-like configuration of a tool according to the invention with two rows in a top view,

[0066] FIG. 6 shows a schematic illustration of an arrangement of fingers in a tool according to the invention,

[0067] FIG. 7 shows a schematic illustration of an arrangement of fingers in a tool according to the invention,

[0068] FIG. 8 shows a schematic illustration of an arrangement of fingers in a tool according to the invention,

[0069] FIG. 9 shows a process sequence of deburring and edge rounding according to the prior art,

[0070] FIG. 10 shows an optional oblique position of the layers in relation to the direction of movement,

[0071] FIG. 11 shows an optional configuration of the invention with fingers which are beveled at the edge,

[0072] FIG. 12 shows an optional configuration of two layers of the invention with fingers which have serrated edges, and

[0073] FIG. 13 shows an optional configuration of a finger layer with slotted fingers.

[0074] FIG. 1 shows a cylindrical configuration of a tool according to the invention in a complete view and an enlarged detail. The tool has a multiplicity of finger layers 1a, 1b, 1c which each extend in a layer area. For the sake of clarity, only three of the finger layers 1a, 1b and 1c will be expressly named below while the figure itself shows a multiplicity of further finger layers for which what is stated with regard to finger layers 1a, 1b and 1c correspondingly applies.

[0075] The finger layers 1a, 1b and 1c are arranged one behind another in such a manner that they overlap with the layer areas of adjacent finger layers 1a, 1b, 1c. In the cylindrical shape shown in FIG. 1, adjacent finger layers 1a, 1b, 1c are at a non-disappearing angle with respect to one another, as a result of which the overlapping is not a complete overlapping.

[0076] Each of the finger layers 1a, 1b, 1c has a plurality of fingers 2a, 2b and 2c. For the sake of clarity, only the fingers 2a, 2b and 2c will be expressly mentioned while the tool has a multiplicity of further fingers for which what is stated with regard to fingers 2a, 2b and 2c correspondingly applies. In FIG. 1, the fingers 2aq, 2b, 2c all have the same length.

[0077] The fingers 2a, 2b and 2c are bendable from an undeflected state in a direction perpendicular to the layer area of the corresponding finger layer 1a, 1b, 1c. In FIG. 1, the fingers 2a, 2b, 2c are in the undeflected state.

[0078] The fingers 2a, 2b, 2c are each of planar design and, in the undeflected state shown, extend in the layer area of the corresponding finger layer 1a, 1b, 1c. In the undeflected state, fingers 2a, 2b, 2c of the same finger layer 1a, 1b, 1c each extend parallel to one another. The longitudinal directions of the fingers 2a, 2b, 2c of the same finger layer 1a, 1b, 1c therefore lie parallel to one another. In the undeflected state, respectively adjacent fingers 2a, 2b, 2c of the same finger layer 1a, 1b, 1c are spaced apart from one another by a distance greater than zero.

[0079] In the cylindrical configuration of the tool according to the invention that is shown in FIG. 1, the finger layers 1a, 1b, 1c are arranged one behind another along a closed circular line. The layer areas of the finger layers 1a, 1b, 1c each stand perpendicularly on the circular line. The fingers 2a, 2b, 2c extend with their longitudinal direction radially with respect to an axis which runs through a center point of the circular line and which stands perpendicularly on the circle described by the circular line.

[0080] All of the finger layers 1a, 1b, 1c are arranged on a common carrier structure 3. The fingers 2a, 2b, 2c of all of the finger layers 1a, 1b, 1c are fastened at one end to the carrier structure 3. In the cylindrical configuration of the tool according to the invention according to FIG. 1, the carrier structure 3 has a cylinder shape about that axis as cylinder axis with respect to which the fingers having 2a, 2b, 2c extend radially with their longitudinal direction.

[0081] FIG. 2 shows a plate-like configuration of a tool according to the invention. In the plate-like configuration of FIG. 2, a multiplicity of finger layers 1a, 1b, 1c, which each extend in a layer area, are arranged one behind another along a circular line in such a manner that the layer areas of adjacent finger layers of the finger layers 1a, 1b, 1c overlap. On account of the plate-like arrangement, the overlapping is incomplete. For the sake of clarity, reference is also made here only to three of the finger layers 1a, 1b, 1c, wherein what is stated applies correspondingly for the other finger layers.

[0082] Each of the finger layers 1a, 1b, 1c has a plurality of fingers 2a, 2b, 2c. For the sake of clarity, only three of the fingers 2a, 2b, 2c are discussed while what is stated applies correspondingly for the other fingers which are shown.

[0083] The fingers 2a, 2b, 2c are bendable from an undeflected state in a direction perpendicular to the layer area of the corresponding finger layers 1a, 1b, 1c. The fingers are shown in the undeflected state in FIG. 2. The fingers 2a, 2b, 2c are in each case of planar design and, in the undeflected state, extend in the layer area of the corresponding finger layer 1a, 1b, 1c. In the undeflected state, the fingers 2a, 2b, 2c of the same finger layer 1a, 1b, 1c also in each case extend parallel to one another here and all have the same length. Also in the example shown in FIG. 2, adjacent fingers 2a, 2b, 2c of the same finger layer 1a, 1b, 1c have a distance of greater than zero from one another in the undeflected state.

[0084] In the plate-like configuration shown in FIG. 2, the finger layers 1a, 1b, 1c are arranged one behind another along a closed circular line, wherein the layer areas of the finger layers 1a, 1b, 1c stand perpendicularly on the circular line, and wherein the fingers 2a, 2b, 2c stand perpendicularly on the area of a circle described by the circular line. The finger layers 1a, 1b, 1c are arranged on a carrier structure 3 which, in the plate-like configuration of FIG. 2, can have a planar shape in the form of a circular ring. The area of the shape of the circular ring lies in the plane described by the closed circular line. The fingers 2a, 2b, 2c are arranged with one end on the carrier structure 3 and stand with their longitudinal directions perpendicularly on the surface of the carrier structure 3. During use, the plate-like configuration can be moved over an edge of a workpiece by the fact that the tool is rotated about an axis which passes through the center point of the closed circular line and stands parallel to the longitudinal directions of the fingers 2a, 2b, 2c.

[0085] FIG. 3 shows a block-shaped configuration of a tool according to the invention. The tool in turn has a multiplicity of finger layers 1a, 1b, 1c, of which, for the sake of clarity, only three layers 1a, 1b, 1c will be mentioned while the same correspondingly applies to the other layers which are shown. The finger layers 1a, 1b, 1c are arranged one behind another in such a manner that the layer areas of adjacent finger layers of the finger layers 1a, 1b, 1c overlap. In the block-shaped configuration, said overlapping can be complete. Furthermore, in the block-shaped configuration, the layer areas of all of the finger layers 1a, 1b, 1c can completely overlap.

[0086] In turn, each of the finger layers 1a, 1b, 1c has a plurality of fingers 2a, 2b, 2c, of which likewise only three fingers 2a, 2b, 2c will be discussed while what is stated applies correspondingly for the other fingers which are shown. Since all of the fingers 2a, 2b, 2c of all of the finger layers 1a, 1b, 1c in the example shown have the same length, the entire tool has a substantially cubic shape.

[0087] Also in the case of the block-shaped configuration of the invention, the fingers 2a, 2b, 2c of the finger layers 1a, 1b, 1c are in each case of planar design and, in the undeflected state, extend in the corresponding layer area which here is plane. In turn, the fingers 2a, 2b, 2c are bendable from an undeflected state. The figure also shows the fingers 2a, 2b, 2c here in the undeflected state.

[0088] In the undeflected state, the fingers 2a, 2b, 2c of the same finger layer 1a, 1b, 1c each extend parallel to one another. In the undeflected state, adjacent fingers 2a, 2b, 2c of the same finger layer 1a, 1b, 1c have a distance of greater than zero from one another.

[0089] In the configuration shown in FIG. 3, the finger layers 1a, 1b, 1c are arranged on a common carrier structure 3 which can have a rectangular shape in the case of the block-shaped configuration of FIG. 3. In the example shown, the fingers 2a, 2b, 2c of all of the finger layers 1a, 1b, 1c stand perpendicularly on the plane defined by the rectangle of the carrier structure 3.

[0090] FIG. 4 shows a further example of a plate-like configuration of the tool according to the invention according to FIG. 2. In FIG. 4, the tool is shown in a top view in a direction perpendicular to that plane in which the circular line runs. The finger layers 1a, 1b, 1c extend radially with respect to the center point of the circular line. The finger layers 1a, 1b, 1c are illustrated here as continuous lines, but they have the fingers 2a, 2b, 2c which are described in FIG. 2 and are not broken up here. It can be seen that a density of the finger layers 1a, 1b, 1c and therefore a density of the fingers 2a, 2b, 2c decreases from the inside to the outside. In order to counteract the resulting inhomogeneity of the finger density, a plate-like workpiece, as shown in FIG. 5, can be configured. In this example, in addition to the finger layers 1a, 1b, 1c, a multiplicity of further finger layers 1b, 1e, 1f are provided which are arranged along a further closed circular line with a smaller radius. Only three of the further finger layers 1d, 1e, 1f are also discussed again here while a multiplicity of further finger layers are arranged along the inner circular line for which that stated with regard to the finger layers 1d, 1e, 1f correspondingly applies.

[0091] The further closed circular line along which the finger layers 1d, 1e, 1f are arranged is arranged concentrically with respect to said first circular line and has a smaller radius than the latter. The two circular lines run in the same plane. The inner arrangement of finger layers 1d, 1e, 1f has a smaller number of finger layers 1d, 1e, 1f, as a result of which the finger density in the region of the inner finger layers 1d, 1e, 1f is reduced in relation to a configuration in which the outer finger layers 1a, 1b, 1c would be continued into the region in which the inner finger layers 1d, 1e, 1f are arranged in FIG. 5. The tool shown in FIG. 5 thereby permits more homogeneous machining over a larger surface than the tool which is shown in FIG. 4 and has the same outer dimensions.

[0092] FIGS. 6, 7 and 8 show by way of example various possible arrangements of fingers and finger layers in the tool according to the invention. The fingers are illustrated schematically here as straight lines. The straight lines here can be regarded as a root or fastening line of the corresponding finger on a carrying structure 3 or as upper sides of the fingers at that end of the fingers lying opposite the carrying structure 3. The finger layers are illustrated parallel to one another in FIGS. 6, 7 and 8, which is relevant in the block-shaped and the cylindrical configuration. In a plate-like configuration of the tool, the finger layers would be at an angle with respect to one another in the illustration of FIGS. 6, 7 and 8. Since, however, said angle is very small, it would scarcely be seen in the figures, and therefore FIGS. 6, 7 and 8 can also be considered to be relevant for the plate-like configuration.

[0093] FIG. 6 shows an arrangement of fingers. Only the fingers 2a to 2f are expressly mentioned here. What is stated applies correspondingly for the other fingers which are shown.

[0094] In FIG. 6, the fingers of adjacent finger layers 1a to 1e are arranged offset with respect to one another. This means that the fingers 2a, 2b, 2c of the finger layer 1a in a projection onto the adjacent finger layer 1b are arranged at the distances between the fingers 2d, 2e, 2f of said adjacent finger layer. The projection here is in a direction perpendicular to the layer area of the finger layer 1a or 1b. In a corresponding manner, in FIG. 6, the fingers of all of the adjacent finger layers of the finger layers 1a to 1e in said projection are arranged in the distances between the fingers or next to the fingers of the adjacent finger layer 1a to 1e.

[0095] FIG. 7 shows a possible arrangement of fingers 2a to 2l in finger layers 1a to 1i. The fingers 2a, 2b, 2c of the finger layer 1a overlap in a projection onto the adjacent finger layer 1b in a direction perpendicular to the surface thereof with the fingers 2g, 2h and 2i of said finger layer 1b. Accordingly, the fingers of the finger layer 1c also overlap with the fingers of the finger layer 1a and 1b. The fingers 2a to 2i of the finger layers 1a to 1c are therefore arranged one behind another in a direction perpendicular to the layer area of said finger layers.

[0096] The fingers 2j to 2l of the finger layers 1d to 1f which adjoin the layers 1a to 1c in a projection in the direction perpendicular to the layer area of the finger layers 1a to 1c or 1d to 1f are arranged in the distances between the adjacent layer 1c. On the other hand, the fingers 2j to 2l of the layers 1d to 1f are arranged one behind another or in an overlapping manner, as described above the layers 1a to 1c. The fingers of the layers 1g to 1i are in turn arranged behind the fingers 2a to 2i of the layers 1a to 1c, i.e. in an overlapping manner therewith, as described above. They are therefore arranged in the distances between the fingers of the layers 1d to 1f or next to the fingers of said layers in the projection.

[0097] FIG. 8 shows an arrangement of fingers 2a to 2f in finger layers 1a to 1d. The fingers 2a to 2f of adjacent finger layers 1a to 1d fall in turn here, as shown in FIG. 6, in the projection into the distances between the respectively adjacent finger layers 1a to 1d.

[0098] In all of the figures, all of the fingers each have the same width and the same distances from one another. This is optional but advantageous. While, in FIGS. 6 and 7, the width of the fingers is equal to the distance between adjacent fingers of the same layer, in the example shown in FIG. 8 the fingers 2a to 2f have a smaller width than the distance between adjacent fingers of the fingers 2a to 2f of the same layer 1a to 1d. Fingers 2d to 2f of a finger layer 1b thereby fall at a distance 4 between the fingers 2a to 2c of the adjacent finger layer 1a or 1c. The fingers 2d to 2f can therefore be bent without rubbing or butting against the fingers 2a to 2c of adjacent finger layers 1a to 1d.

[0099] FIG. 9 shows by way of example a progression of a method for deburring and edge rounding a workpiece. In a state Z1, a workpiece with a primary burr is present. A primary burr can be produced, for example, by the workpiece having been punched out of a metal sheet or by parts having been punched out of the workpiece. The prior art now provides a step S1 in which the primary burr is removed. The removal of the primary burr can take place, for example, by means of an encircling belt with an abrasive surface. In many cases, the primary burr is thereby not completely removed but rather at least partially reshaped into what is referred to as a secondary burr. The step S1 can therefore lead to a state Z2 in which a workpiece with a secondary burr is present. A step S2 of removing the secondary burr then has to follow, which leads to a deburred workpiece in a state Z3. It is necessary for many applications for the edges of the deburred workpiece to be rounded off to a certain size, for example in order to prevent flaking of paint to be subsequently applied. The rounding off of the edges is achieved by an edge rounding step S3 which is applied to the deburred workpiece. The result of said step S3 is a state Z4 in which an edge-rounded workpiece is present.

[0100] FIG. 10 shows an optional oblique position of the layers in relation to that direction in which the tool is moved during use. The upper partial image shows a top view corresponding to FIG. 6. The left, lower partial image shows a sectional view along the intersecting line A-A shown in the upper partial image, and the right, lower partial image shows a sectional view along the line B-B shown in the upper partial image.

[0101] The direction of movement of the tool during use stands perpendicularly to that direction along which the fingers of the same layer are arranged next to one another, i.e. to the right or left in the upper partial image. It can be seen in the sectional views that the layers 1a to 1e are inclined here in relation to the direction of movement by an angle not equal to 90. Adjacent layers of the layers 1a to 1d are inclined here in opposite directions. In the example shown, the layers 1a, 1b and 1c are inclined to the right and the layers 1d and 1e to the left.

[0102] FIG. 11 shows a configuration of the invention corresponding to the embodiment shown in FIG. 6. The uppermost partial image here shows the position of the fingers 1a to 1h from above, the middle partial image a side view of the surface of the fingers and the lower partial image a position of the fingers 1a to 1h from above. The embodiment shown in FIG. 11 differs from the embodiment shown in FIG. 6 in that, in FIG. 11, the outermost fingers 2a, 2d, 2g, 2h of each finger layer are inclined dropping toward the edge of the finger layer. The fingers are therefore becoming shorter toward the edge. The fingers can also become narrower toward the edge. By means of this configuration, a softer engagement is obtained.

[0103] FIG. 12 shows by way of example an embodiment of the finger layers 1a to 1d in which the finger layers have serrated edges. The basic shape of the finger layer corresponds to that shown in FIG. 3, with the difference that the edges of the fingers 2a, 2b, 2c are serrated. Partial image A shows one of the finger layers 1A.

[0104] Partial FIG. 12B shows a starting layer from which the finger layers 1a and 1b can be produced by being cut out. An intersecting line (optionally serrated here) is introduced here into the layer and runs in an alternating manner in serrated long sections and rectilinear short sections. Two finger layers 1a and 1b which each have elongate fingers 2a, 2b and 2c are thereby separated from the starting layer.

[0105] Partial FIG. 12C shows a top view of the two finger layers 1a and 1b which are produced in accordance with partial FIG. 12B and are arranged one behind another here corresponding to FIG. 3. It is seen that the layers overlap here in the region of their serrations in the projection. The fingers of the same finger layer 1a or 1b are each arranged with their longitudinal directions parallel to one another.

[0106] FIG. 13 shows an example of an optional configuration of a finger layer 1a in which the fingers are in each case slotted. For this purpose, three rows of slots 5 arranged one behind another in the direction of the longitudinal direction of the fingers are in each case introduced into the fingers 2a, 2b, 2c. The slots run here with their longitudinal direction parallel to the longitudinal direction of the fingers 2a, 2b, 2c. In the example shown, the finger layer 1a has five fingers which each have three rows of slots, wherein each row of slots has four slots 5 arranged one behind another.

[0107] The tool according to the invention can now be used in a method for removing secondary burrs on an edge of a metallic workpiece, i.e. in step S2.

[0108] It can alternatively or additionally also be used in step S3 for rounding an edge of a metallic workpiece. The tool is moved here over the edge of the workpiece in such a manner that the finger layers brush the edge to be machined and thereby remove the secondary burr and/or round off the edge.

[0109] The tool according to the invention can be used particularly advantageously in a method in which, in a common step, primary burrs are removed at edges of the tool and the edges are rounded. The workpiece can therefore be machined by means of the tool according to the invention from state Z1 into state Z4 in just one step. For this purpose, in turn, the tool is moved over the edge in such a manner that the finger layers brush the edge and thereby remove the primary burrs and round off the edge.