Machining tool, machining device and machining process

Description

[0001] A machining tool according to the preamble of claim 1 is known from JP 2 987866 B2.

[0002] The invention relates to a machining tool with machining element carriers arranged around a rotational axis of the machining tool, the distance of which from the rotational axis of the machining tool is adjustable. The invention also relates to a machining device with such a machining tool and to a machining method using such a machining tool.

[0003] In many cases, workpieces are machined using rotating tools. These rotating tools can themselves be subject to wear or be used in combination with other tools that are subject to wear. In both cases, it would be desirable to be able to adjust the radius of the machining tool. An example of this is described below.

[0004] Components cut with oxygen exhibit oxide layers at the cut edges. These layers pose an adhesion risk for subsequent processes. For example, they can cause the coating to flake off and must therefore be removed.

[0005] The oxide layer is mechanically removed by grinding or brushing. Both methods can be used in manual processes. In machine processing, fiber materials or spring wire elements are typically used to achieve bright, metallic edge surfaces.

[0006] In the area of ​​disc tools, wire brushes are typically used to remove oxide layers. These usually consist of multi-row bristle arrangements with angled fibers. Due to the angled fibers, the tool works with a piercing action at the edge.

[0007] In the field of rolling tools, so-called spring wire cylinders or oxide rollers are used. Spring wire elements are threaded onto shafts, flexibly mounted, and distributed around the circumference.

[0008] When oxide tools are used with other wear-prone tools on a machining unit, wear compensation is necessary. Roller tools exist for this purpose, which can be readjusted in diameter according to precisely defined increments.

[0009] The object of the present invention is to provide a machining tool, a machining device and a machining method which makes it possible to continuously adjust the radius of the machining tool.

[0010] The problem is solved by the machining tool according to claim 1, the machining device according to claim 12 and the machining method according to claim 14.

[0011] According to the invention, a machining tool is provided which has a certain number, hereinafter referred to as n, of machining element carriers, where n ≥ 2. The machining element carriers are arranged about an axis, which hereinafter referred to as the axis of rotation of the machining tool. For the purposes of this invention, this axis is initially defined as a straight line, not necessarily a technical axis.

[0012] The machining element carriers can then support a multitude of machining elements, which ultimately effect the machining of the workpiece. Advantageously, the machining element carriers can be straight and preferably run parallel to the axis of rotation of the machining tool. Machining element carriers on which the machining elements can be flexibly or resiliently mounted are particularly suitable.

[0013] The machining tool according to the invention also comprises a first end element and a second end element, between which the n machining element carriers are arranged. The machining element carriers are connected to the first and second end elements. The n machining element carriers thus each extend from the first end element to the second end element. If the machining element carriers are optionally straight, they can advantageously extend parallel to the axis of rotation of the machining tool from the first end element to the second end element.

[0014] According to the invention, the first and / or the second end element each has two guide devices. At least one end element therefore has two guide devices. One of the two guide devices has a guide element for each of the n machining element carriers, referred to here as the first guide element, which runs in a plane perpendicular to the axis of rotation of the machining tool and through which the corresponding machining element carrier is guided. Each of the machining element carriers is thus guided by its own first guide element; therefore, there are n first guide elements.

[0015] According to the invention, the other of the two guide devices of the same end element also has a guide element for each of the n machining element carriers, which is also to be referred to as the second guide element. Thus, there are n second guide elements. The second guide elements also run in a plane perpendicular to the axis of rotation of the machining tool. Each machining element carrier is guided by one of the second guide elements.

[0016] In summary, at least one end element, consisting of a first and second end element, has two guide devices, each with n guide elements. Each machining element carrier is guided by a guide element, referred to as the first guide element, of the first of the two guide devices, and by a guide element, referred to as the second guide element, of the second guide device. Advantageously, both end elements can also be designed in this way.

[0017] According to the invention, projections of the guide elements of the two guide devices that guide the same machining element carrier intersect at a non-zero angle when projected onto a common plane perpendicular to the axis of rotation of the machining tool in every position of the guide device. Here, projection is understood as the mathematical process in which the spatial coordinate of the guide elements, which runs in the direction of the axis of rotation of the machining tool, is set to zero.

[0018] The fact that these projections intersect at a non-zero angle means that the guide elements are not parallel to each other.

[0019] In general, the projection can be made in the direction of the extension of the corresponding machining element carrier, which is guided by these guide elements. Since the machining element carrier is guided by both guide elements, it can thus be held precisely at the intersection point of the respective first and second guide elements.

[0020] If the machining element carriers are straight and run parallel to the axis of rotation of the machining tool, the aforementioned projection onto the common plane can advantageously be made in the direction of the axis of rotation of the machining tool. This means that the coordinate of the guide elements in the direction of the axis of rotation of the machining tool is set to zero.

[0021] In an advantageous embodiment of the invention, the projections of the guide elements of the two guide devices that guide the same machining element carrier can intersect on the common plane perpendicular to the axis of rotation of the machining tool at a constant distance to the axis of rotation for all machining element carriers, regardless of the position of the guide devices of the corresponding end element relative to each other. In this way, the machining element carriers maintain the same distance to the axis of rotation of the machining tool in all positions of the guide devices of the corresponding end element relative to each other. The machining element carriers thus lie on a circle in a plane perpendicular to the axis of rotation of the machining tool, centered on the axis of rotation of the machining tool.

[0022] Advantageously, the guide elements of one of the two guide devices can run straight along at least one of the end elements. Therefore, either the first or the second guide elements can run straight. They are particularly preferably arranged radially to the axis of rotation of the machining tool.

[0023] The other guide elements, i.e., the guide elements of the other of the two guide devices of the same end element, can advantageously extend spirally around the axis of rotation of the machining tool. A spiral can be understood as a curve that runs around a point or an axis and moves away from or towards that point or axis with an angular progression. The guide elements can thus each extend within a specific angular range around the axis of rotation of the machining tool and, in the course of this extension, move away from the axis of rotation of the machining tool. Advantageously, all spirally extending end elements and / or all straight end elements can extend from the same initial radius to the same final radius with respect to the axis of rotation of the machining tool.

[0024] Advantageously, the guide elements move away from the axis of rotation of the machining tool in the same direction.

[0025] In an advantageous embodiment, the spirally extending guide elements can be arranged such that exactly two of the spirally extending end elements are present in each radial direction with respect to the axis of rotation of the machining tool.

[0026] In an advantageous embodiment, the machining element carriers can be arranged equidistantly in the circumferential direction around the axis of rotation of the machining tool.

[0027] Advantageously, the guide elements of both guide devices are also arranged equidistantly around the circumference of the machining tool's axis of rotation. This means that the distances between adjacent guide elements or machining element carriers along a circumference around the machining tool's axis of rotation are the same for all adjacent guide elements or machining element carriers.

[0028] In an advantageous embodiment of the invention, the guide devices can be discs, which are particularly preferably circular with the axis of rotation of the machining tool at their center. The guide elements can then be formed in these discs. The discs preferably lie in a plane that is perpendicular to the axis of rotation of the machining tool.

[0029] The guide elements can be designed as elongated holes in these discs, whereby elongated holes can be understood to mean both grooves and through holes.

[0030] A particularly preferred embodiment is one in which the guide elements of the guide device facing the workpiece carriers are through holes, and the guide elements of the guide devices facing away from the workpiece carriers are through holes or blind holes. If the guide elements of the guide device facing away from the workpiece carriers are blind holes, the workpiece carriers can engage with their ends in these blind holes and be guided within them.

[0031] In an advantageous embodiment of the invention, at least one of the end elements, preferably the guide device facing the machining element carriers, can have a pointer element extending through a through-hole, here referred to as the pointer through-hole, in the other guide device of the same end element. The pointer through-hole can extend along a circumference around the axis of rotation of the machining tool over such an angular range that, when rotated within this range, the machining element carriers move from a radially innermost position to a radially outermost position. In this way, the pointer element can indicate the position of the machining element carriers by its position in the pointer through-hole.

[0032] Advantageously, the guide device facing away from the workpiece carriers can have a scale on its surface facing away from the workpiece carriers, extending along the pointer through-hole. The scale can indicate the radii at which the workpiece carriers are located in the position where the pointer element refers to the corresponding entry on the scale, or it can indicate angles by which the two guide devices are rotated relative to each other.

[0033] Advantageously, one or both of the two guide devices can have at least one gripping element on the circumference of at least one of the end elements, which can be gripped from the outside and is therefore accessible in the radial direction. The gripping element can, for example, be a cutout in an edge of the corresponding guide device or a projection on the edge of the guide device. The cutout can, for example, extend radially inwards, or the projection can extend radially outwards.

[0034] In an advantageous embodiment of the invention, at least one of the end elements can have a projection in one of the guide devices that engages in a recess in the other guide device of the same end element. The projection can, for example, extend beyond a surface of the guide device in the direction of the axis of rotation of the machining tool, and the recess can be formed in the other guide device in the direction of the axis of rotation of the machining tool.It is also possible that the recess is provided in one of the guide devices in the direction of the axis of rotation of the machining tool, namely at the outer edge of this guide device, and that the projection extends radially perpendicular to the axis of rotation of the machining tool beyond the outer edge of the guide device, wherein the outer edge of the guide device having the projection has a smaller radial distance to the axis of rotation of the machining tool than the recesses in the other guide device.

[0035] Preferably, the recess extends circumferentially around the axis of rotation of the machining tool over such an angular range that, when the guide devices of this end element are rotated relative to each other, it allows the corresponding machining element carriers to be displaced from one end to the other by the guide elements that extend radially over the smaller area. In simplified terms, the recess preferably extends around the axis of rotation of the machining tool over such a circumference that it allows the machining element carriers to move precisely from their radially innermost to their radially outermost position. The projection and the recess together thus define a maximum angular range through which the guide devices can be rotated relative to each other.

[0036] The machining element carriers preferably have straight bars that run parallel to the axis of rotation of the machining tool. They are therefore preferably perpendicular to the plane in which the guide elements run.

[0037] In an advantageous embodiment of the invention, the machining element carriers can each have a plurality of machining elements, which particularly preferably extend outwards from the machining tool's axis of rotation in planes perpendicular to the machining tool's axis of rotation. Thus, when the machining tool is rotated over a workpiece about its axis of rotation, the machining elements can move over the workpiece and machine it. In a particularly advantageous embodiment, the machining elements can be spring wire elements that extend away from the corresponding machining element carrier on which they are arranged in the direction of the machining tool's axis of rotation. These spring wire elements can advantageously be designed as wires that are wound several times around the corresponding machining element carrier and project radially outwards at one end.To prevent the spring wire elements from rotating around the machining element carrier, the opposite ends of the wires can also protrude. Each machining element carrier can then have a stop element that runs parallel to the corresponding machining element carrier and is spaced from it at a distance less than the length of the protrusion of the spring wire that does not extend radially outwards. The stop element is preferably positioned relative to this protrusion such that, during normal use of the machining tool, the protrusion is pressed against the stop element.

[0038] The spring wire elements can preferably be curved on their radially outward-extending machining sections. For the removal of oxide layers, it is advantageous if these machining ends are curved in the direction of rotation in which the machining tool is turned during its intended use.

[0039] The invention also provides a machining device comprising, firstly, a machining tool as described above and, secondly, at least one wear tool. The machining tool and the wear tool are arranged above a common machining plane, which is the plane in which machining is to be performed. Both the wear tool and the machining tool have a target distance from the machining plane, which is determined by the requirements of the machining operation. The machining tool is set to a diameter such that it has its target distance from the machining plane when the wear tool has its target distance from the machining plane.As the wear-prone tool becomes increasingly worn, the entire machining fixture is moved closer to the machining plane to maintain the target distance of the wear-prone tool. To achieve this target distance, the diameter of the machining tool can then be adjusted.

[0040] Advantageously, at least one of the wear-prone tools can be a cylindrical tool having an axis of rotation. The distance of the axis of rotation of the wear-prone tool from the machining plane can then be equal to the distance of the axis of rotation of the machining tool from the machining plane. This ratio can be maintained by the machining tool according to the invention because, as the wear-prone tool wears, the machining tool can be adjusted in its radius by the same amount.

[0041] The invention also describes a machining method in which a surface is machined with a machining tool as described above and with a wear-prone tool. During the process, the distance between the wear-prone tool and the surface is reduced by an amount sufficient to compensate for the wear. The machining tool is also moved towards the surface by the same distance as the wear-prone tool, and the machining elements are displaced radially inwards by an amount equal to the amount of wear. The machining element carriers can be displaced by the corresponding amount to achieve this displacement of the machining elements.

[0042] It is also possible that the machining elements themselves are subject to wear. In this case, a process using only the machining tool can be carried out in such a way that the machining elements or the machining element carriers are shifted outwards by the amount of wear, so that the machining elements remain in contact with the workpiece being machined.

[0043] The invention will now be explained by way of example with reference to several figures. The features shown in the figures can also be implemented independently of the examples and can be combined between the examples. Identical reference numerals denote identical or corresponding features.

[0044] They show: Fig. 1 a machining tool according to the invention, Fig. 2 the in Fig. 1 shown machining tool in assembled state, Fig. 3an overlay of a first and second guide device Fig. 4 a guide device Fig. 5 a projection of a machining tool according to the invention, and Fig. 6 a machining device according to the invention.

[0045] The Figure 1 and 2 Figure 1 shows an example of a machining tool according to the invention. The machining tool has a number n, where n ≥ 2, of machining element carriers 1a, 1b, ..., 1n. The machining element carriers 1a, 1b, ..., 1n are arranged around a straight line, which is referred to as the axis of rotation of the machining tool. In the example shown, this straight line is a median line of the machining tool, from which all machining element carriers 1a, 1b, ..., 1n are equidistant. In the Figure 1 and 2 In the example shown, n = 12.

[0046] The machining tool has a first end element 2a and a second end element 2b, between which the machining element carriers 1a, 1b, ..., 1n are arranged. The machining element carriers 1a, 1b, ..., 1n are connected at their ends to the end elements 2a and 2b.

[0047] The first and / or the second end element 2a, 2b, in the Figure 1 and 2 Both end elements 2a and 2b each have two guide devices 3aa, 3ab, 3ba, 3bb, which in the example shown are designed as circular disks that are perpendicular to the axis of rotation of the machining tool and through whose centers the axis of rotation of the machining tool runs. Fig. 1 The two guide devices 3aa, 3ab and 3ba and 3bb are shown spaced apart from each other. In the intended assembled state, as shown in Fig. 2 As shown, the two guide devices are arranged in contact with each other.

[0048] Of the guide devices 3aa, 3ab, 3ba, 3bb, each of the machining element carriers 1a, 1b, ..., 1n has guide elements 3aa1 to 3aan, 3ab1 to 3abn, 3ba1 to 3ban, 3bb1 to 3bbn. In the Figure 1 and 2 Due to the perspective view, only the guide elements 3ab1 to 3abn of the guide device 3ab and 3ba1 to 3ban of the guide device 3ba can be seen.

[0049] The guide elements 3aa1 to 3aan, 3ab1 to 3abn, 3ba1 to 3ban, 3bb1 to 3bbn run in a plane perpendicular to the axis of rotation of the machining tool and guide the corresponding machining element carrier 1a, 1b, ..., 1n. The projections of the guide elements 3aa1 to 3aan, 3ab1 to 3abn, 3ba1 to 3ban, 3bb1 to 3bbn of the two guide devices 2a, 2b, which guide the same machining element carrier 1a, 1b, ..., 1n, onto a common plane perpendicular to the axis of rotation of the machining tool, i.e., the Figure 1 and2 A projection in the direction of the axis of rotation, in every position of the guide devices 3aa, 3ab and 3ba, 3bb respectively, intersects each other at a non-zero angle. In the Figure 1 and 2 This is achieved by the fact that the guide elements of each of the two guide devices 3aa, 3ab or 3ba, 3bb run straight and in a radial direction with respect to the axis of rotation of the machining tool (in Fig. 1 These are the guide elements of the guide devices 3ab and 3bb facing the machining element carriers 1a, 1b,...., 1n).

[0050] The guide elements 3aa1 to 3aan (due to the perspective in Figure 1 and 2 (not recognizable) the guide device 3a1 and the guide elements 3ba1 to 3ban of the guide device 3ba run in Fig. 1spirally around the axis of rotation of the machining tool. The straight guide elements 3ab1 to 3abn and 3bb1 to 3bbn are designed as elongated through-bores. The spirally extending guide elements 3aa1 to 3aan and 3ba1 to 3ban are in Figure 1 and 2 They are designed as elongated blind holes, but can also be through holes.

[0051] In the Figure 1 and 2 The guide device 3aa has a pointer through-bore 4 in the end element 2a, which runs along the circumference of the guide device 3aa. A scale 5 is arranged at the edge of the pointer through-bore 4, which can indicate, for example, angles or distances of the machining element carriers 1a to 1n from the axis of rotation of the machining tool. The guide device 3ab has a pointer element 6 (in Fig. 4to be recognized), which extends through the pointer passage hole and indicates a setting state of the machining tool by its position along scale 5.

[0052] Of the guide devices 3aa, 3ab, 3ba, 3bb, each end element 2a, 2b has at least one, in the example shown three, projection 7 which engages in corresponding recesses 8 in the respective other guide device. The recesses 8 extend circumferentially around the axis of rotation of the machining tool over an angular range which is dimensioned such that, when the guide devices are rotated relative to each other, the machining element carriers 1a, 1b, ..., 1n move from one end of at least one guide element 3aa1 to 3aan, 3ab1 to 3abn, 3ba1 to 3ban, 3bb1 to 3bbn to its opposite end, from a stop of the projection 7 in the corresponding recess 8 to the opposite stop.

[0053] The machining element carriers 1a, 1b, ..., 1n have a plurality of machining elements 9, which are designed here as spring wire elements and extend from the corresponding machining element carrier 1a, 1b, ..., 1n in planes perpendicular to the axis of rotation in the direction away from the axis of rotation of the machining tool. The spring wire elements 9 are formed by winding spring wire onto the corresponding machining element carrier 1a, 1b, ..., 1n and bent in outwardly projecting sections in the direction of the intended rotation. The outwardly projecting sections of the machining elements 9 in this way shall be referred to as machining sections of the machining elements 9. The wires, which are not visible here, extend beyond the winding at their ends opposite the machining sections and abut against a stop element 10a, 10b, ..., 10n, which is located in Fig. 5This can be seen. These stop elements are arranged in such a way that these protrusions of the processing elements 9 abut against the stop elements 10a, 10b, ..., 10n when used as intended.

[0054] Fig. 3 Figure 1 shows a top view of one of the end elements 2a, in which the guide device 3aa facing the viewer is transparent. This relates to the Figure 1 and 2The above applies analogously. It can be seen that the guide elements 3aa1 to 3aan of one guide device 2aa intersect with corresponding guide elements 3ab1 to 3abn of the guide device 3ab at a single point where the corresponding machining element carrier 1a, 1b, ..., 1n is held. It can be seen that in this example, the guide elements 3aa1 to 3aan, 3ab1 to 3abn, 3ba1 to 3ban, 3bb1 to 3bbn are arranged equidistant from each other in the circumferential direction. It can also be seen that in this example, at least one, here three, pointer through-bores 4 are provided, each with a pointer element 6 and a scale 5.

[0055] The outer guide device 3aa has a recess 11 which is provided in the outer edge of the guide device 3aa and on which the guide device can be gripped for turning.

[0056] Fig. 4 This shows in Fig. 3The end element 2a shown is depicted as it would appear in reality, where the guide device 3aa is opaque. The pointer through-holes 4, the scales 5, and the pointer elements 6 are also visible here. Since the guide elements 3aa1 to 3aan are designed as blind holes, they do not protrude from the surface shown.

[0057] Fig. 5 shows a top view of the in the Figures 3 and 4The end element shown is oriented towards the inner guide device 3ab. Guide elements 3ba1 to 3ban are located on top. The spiral guide elements 3aa1 to 3aan of the guide device 3aa can be seen through the guide elements 3ba1 to 3ban. Only the end sections of the machining element carriers 1a, 1b, ..., 1n that enter the guide elements 3aa1 to 3aan and 3ba1 to 3ban, respectively, are visible. These end sections pass through U-shaped recesses in the end sections of stop elements 10a to 10n. Spring wire elements 9 are wound around each of the machining element carriers 1a, 1b, ..., 1n as machining elements 9, so that they project radially outwards. With their radially outwardly projecting areas, the machining sections, they are curved in the direction of the intended rotation of the machining tool.

[0058] Fig. 6Figure 12 shows an example of a machining device 12 according to the invention, which comprises, on the one hand, a machining tool 13 as described above and, on the other hand, a wear tool 14. The machining tool 13 and the wear tool 14 are used to machine a workpiece 15, the surface of which facing the tools defines a machining plane. In the example shown, the workpiece is guided past the tools 13 and 14 on a transport device 16. During the machining of many workpieces 15, the diameter of the wear tool 14 decreases due to wear. The device 12 can then be moved towards the workpiece 15 to compensate for this wear.To ensure that the ends of the machining elements 9 of the machining tool maintain a target distance from the machining plane, the diameter of the machining tool 13 is reduced by rotating the guide devices 3aa, 3ab, 3ba, 3bb relative to each other. The distance between the machining elements 9 is selected such that they touch the tool during machining.

Claims

1. Machining tool (13), comprising a number η, n ≥ 2, of machining element carriers (1a, 1b,..., 1n), which are arranged around a straight line called the "machining tool axis of rotation", and a first end element (2a) and a second end element (2b), wherein the n machining element carriers (1a, 1b, ..., 1n) are arranged between the first end element (2a) and the second end element (2b) and are each connected thereto, characterized in that the first and / or the second end element (2a, 2b) each has two guide devices (3aa, 3ab, 3ba, 3bb), wherein one of the two guide devices (3aa, 3ab, 3ba, 3bb) for each of the n machining element carriers (1a, 1b,..., 1n) has a first guide element (3aa1,..., 3aan, 3ab1,..., 3abn, 3ba1,..., 3ban, 3bb1,..., 3bbn), which extends in a plane perpendicular to the machining tool axis of rotation and through which the corresponding machining element carrier (1a, 1b,..., 1n) is guided, wherein the other of the two guide devices (3aa, 3ab, 3ba, 3bb) for each of the n machining element carriers (1a, 1b,..., 1n) has a second guide element (3aa1,..., 3aan, 3ab1,..., 3abn, 3ba1,....., 3ban, 3bb1,..., 3bbn), which extends in a plane perpendicular to the machining tool axis of rotation (13) and through which the corresponding machining element carrier (1a, 1b,..., 1n) is guided, wherein projections of those guide elements (3aa1,..., 3aan, 3ab1,..., 3abn, 3ba1,..., 3ban, 3bb1,..., 3bbn) of the two guide devices (3aa, 3ab, 3ba, 3bb) which guide the same machining element carrier (1a, 1b,..., 1n) on a common plane perpendicular to the machining tool axis of rotation (13) cross each other at a non-vanishing angle in each position of the guide devices (3aa, 3ab, 3ba, 3bb).

2. Machining tool (13) according to the preceding claim, wherein the projections of the guide elements (3aa1,..., 3aan, 3ab1,..., 3abn, 3ba1,..., 3ban, 3bb1,..., 3bbn) of the two guide devices (3aa, 3ab, 3ba, 3bb) which guide the same machining element carrier (1a, 1b,..., 1n) intersect on the common plane perpendicular to the machining tool axis of rotation in each position of the guide devices (3aa, 3ab, 3ba, 3bb) of the corresponding end element (2a, 2b) at the same distance from the axis of rotation of the machining tool (13) for all machining element carriers (1a, 1b,..., 1n).

3. Machining tool (13) according to one of the preceding claims, wherein the guide elements (3aa1,..., 3aan, 3ab1,..., 3abn, 3ba1,..., 3ban, 3bb1,..., 3bbn) of one of the two guide devices (3aa, 3ab, 3ba, 3bb) of at least one of the end elements (2a, 2b) extend straight and preferably in a radial direction relative to the machining tool axis of rotation (13) and the guide elements (3aa1,...., 3aan, 3ab1,..., 3abn, 3ba1,..., 3ban, 3bb1,..., 3bbn) of the other of the two guide devices (3aa, 3ab, 3ba, 3bb) of the same end element (2a, 2b) extend spirally around the machining tool axis of rotation (13).

4. Machining tool (13) according to one of the preceding claims, wherein the machining element carriers (1a, 1b,..., 1n) are arranged equidistantly in the circumferential direction about the machining tool axis of rotation (13).

5. Machining tool (13) according to one of the preceding claims, wherein the two respective guide devices (3aa, 3ab, 3ba, 3bb) are discs which are preferably circular with the machining tool axis of rotation (13) at the center, in which the guide elements (3aa1,...., 3aan, 3ab1,..., 3abn, 3ba1,..., 3ban, 3bb1,..., 3bbn) are designed as slotted holes.

6. Machining tool (13) according to one of the preceding claims, wherein the guide elements (3aa1,..., 3aan, 3ab1,..., 3abn, 3ba1, ..., 3ban, 3bb1,..., 3bbn) of the guide devices (3aa, 3ab, 3ba, 3bb) facing the machining element carriers (1a, 1b, ..., 1n) are through-holes, and wherein the guide elements (3aa1, ..., 3aan, 3ab1, ..., 3abn, 3ba1, ..., 3ban, 3bb1, ...., 3bbn) of the guide devices (3aa, 3ab, 3ba, 3bb) facing away from the machining element carriers (1a, 1b,..., 1n) are through-holes or blind holes.

7. Machining tool (13) according to one of the preceding claims, wherein in at least one of the end elements (2a, 2b) one of the guide devices (3aa, 3ab, 3ba, 3bb), preferably the guide device (3aa, 3ab, 3ba, 3bb) which faces the machining element carriers (1a, 1b,...., 1n) has a pointer element (6) which extends through a pointer through-hole (4) in the other guide device (3aa, 3ab, 3ba, 3bb) of the same end element (2a, 2b), preferably in the guide device (3aa, 3ab, 3ba, 3bb) which faces away from the machining element carriers (1a, 1b,..., 1n), wherein the pointer through-hole (4) extends along a circumference around the machining tool axis of rotation (13), further comprising a scale (5) extending along the pointer through-hole (4).

8. Machining tool (13) according to one of the preceding claims, wherein one or both of the two guide devices (3aa, 3ab, 3ba, 3bb) of at least one of the end elements (2a, 2b) has at least one gripping element on its circumference which can be gripped from the outside, wherein preferably the at least one gripping element is a cutout in one edge of the guide device (3aa, 3ab, 3ba, 3bb) or an overhang on the edge of the guide device (3aa, 3ab, 3ba, 3bb).

9. Machining tool (13) according to one of the preceding claims, wherein in at least one of the end elements (2a, 2b) one of the guide devices (3aa, 3ab, 3ba, 3bb) has a projection (7) which engages in a recess (8) in the other of the guide devices (3aa, 3ab, 3ba, 3bb) of the same end element (2a, 2b), wherein the recess (8) extends in the circumferential direction about the axis of rotation of the machining tool (13) over an angular range which, when the guide devices (3aa, 3ab, 3ba, 3bb) of this end element (2a, 2b) are rotated relative to one another, causes a displacement of the corresponding machining element carrier (1a, 1b,...., 1n) from one end to the other end of that guide element (3aa1,..., 3aan, 3ab1,..., 3abn, 3ba1,..., 3ban, 3bb1,..., 3bbn) which guides it, which extends over the smaller area in the radial direction.

10. Machining tool (13) according to one of the preceding claims, wherein the machining element carriers (1a, 1b,..., 1n) have straight rods which run parallel to the machining tool axis of rotation (13).

11. Machining tool (13) according to the preceding claim, wherein the machining element carriers (1a, 1b,..., 1n) each comprise a plurality of machining elements (9), wherein the machining elements (9) are spring wire elements (9) extending from the corresponding machining element carrier (1a, 1b,..., 1n) in the direction away from the axis of rotation of the machining tool (13).

12. Machining device (12), comprising at least one machining tool (13) according to one of the preceding claims and at least one tool (14) subject to wear, wherein the at least one machining tool (13) and the at least one tool (14) subject to wear are arranged above a common machining plane, wherein the at least one machining tool (13) is set by adjusting the two guide devices (3aa, 3ab, 3ba, 3bb) of at least one of its end elements (2a, 2b) to such a diameter with respect to its axis of rotation that its distance from the machining plane is a nominal distance, optionally equal to the distance of the tool (14) subject to wear from the machining plane.

13. Machining device (12) according to the preceding claim, wherein the at least one tool (14) subject to wear is a cylindrical tool with an axis of rotation, wherein a distance of the axis of rotation of the tool (14) subject to wear from the machining plane is equal to a distance of the machining tool axis of rotation (13) from the machining plane.

14. Machining method, wherein a surface is machined with a machining tool (13) according to one of claims 1 to 11 and with a tool (14) subject to wear, wherein a distance of the tool (14) subject to wear is displaced from the surface in the direction of the surface by such a distance that the wear is compensated, wherein the machining tool (13) is displaced in the direction of the surface by the same distance as the tool (14) subject to wear, wherein the machining element carriers (1a, 1b, ...., 1n) are displaced inwards by turning the guide devices (3aa, 3ab, 3ba, 3bb) relative to one another by a distance equal to the amount of wear.