tool

Abstract

The present invention relates to a tool (1) for machining the peripheral surface of a workpiece, the tool (1) comprising an interface (3) configured for fixing the tool (1) to a counter interface and a base body (5) that is at least partially cylindrical, the base body (5) having a peripheral wall (7) surrounding a mounting space (9) and configured to be open at its front side so that a workpiece can be at least partially accommodated in the mounting space (9), at least one cutting edge (13) engaging in the mounting space (9) is arranged in the base body (5) for machining the peripheral surface of the workpiece, the peripheral wall (7) having at least one chip-passing recess (17) that is arranged relative to the at least one cutting edge (13) in such a way that chips removed by the at least one cutting edge (13) during machining of the workpiece can exit from the mounting space (9) to an outer peripheral area (19) of the base body (5) through the at least one chip-passing recess (17).

Description

[Technical field]

[0001] The present invention relates to a tool for machining the outer peripheral surface of a workpiece. [Background technology]

[0002] Workpieces with large outer diameters, especially more than 170 mm, and at the same time with large overhangs, especially at least 0.8 times the outer diameter, are generally machined by turning, especially on turn-milling centers. This is particularly disadvantageous with regard to the overall manufacturing strategy for the manufacture of complex components, especially stator housings of electric motors, since it requires a lot of time and expense, especially with regard to the use of different machining stations and the re-clamping of the different tools, which are required, on the one hand, for the inner machining and, on the other hand, for the outer machining. In particular, the inner diameters of such workpieces can generally be machined with rotating tools on a machining center, which allows for a fast and, in particular, automated re-clamping. It would therefore be desirable if the outer diameters, i.e. the outer peripheral surfaces, of such workpieces could also be machined with rotating tools on a machining center. However, currently, machining of the outer peripheral surfaces on a machining center is only possible with so-called bridge tools, which have cutting edges on arms projecting radially from the interface, and which, for geometrical and stability reasons, can only machine relatively small overhangs and / or outer diameters. The challenges outlined here arise in particular for the fine machining (IT7 quality) of correspondingly large outer diameters, especially with large overhangs. Summary of the Invention

[0003] The invention is based on the object of providing a tool for machining the peripheral surface of a workpiece, which at least reduces and preferably avoids the above-mentioned disadvantages.

[0004] This problem is solved by providing the presented technical teachings, in particular the teachings of the independent claims as well as the dependent claims and the embodiments disclosed herein.

[0005] In particular, the problem is solved by providing a tool for machining the circumferential surface of a workpiece, which comprises an interface configured for mounting the tool to a counter interface. The tool also has an at least partially cylindrical base body. The base body has a peripheral wall with a mounting space and is configured to be open at its front end so that the workpiece can be at least partially accommodated in the mounting space. At least one cutting edge is arranged on the base body, which engages in the mounting space for machining the circumferential surface of the workpiece. The peripheral wall has at least one chip-passing recess, which is arranged relative to the at least one cutting edge such that chips removed by the at least one cutting edge during machining of the workpiece can pass through the at least one chip-passing recess from the mounting space to the outer peripheral area of ​​the base body. The at least partially cylindrical base body gives the tool a high degree of stability, so that large outer diameters can be machined with high quality even with large projection lengths, and particularly fine machining (at least IT7 quality or higher) is also possible. During machining, the workpiece to be machined can be held in the attachment space with an open front end, the tool gripping the workpiece at least in certain areas with its circumferential wall. In this way, the tool is configured, in particular, as a tubular or bell-shaped tool, which inherently provides high stability. The outer periphery, i.e. the outer diameter, of the workpiece can be machined with at least one cutting edge engaged in the attachment space, i.e. projecting in particular radially into the attachment space. The chips generated during machining can exit radially outward through the chip-passing recess corresponding to the cutting edge, so that damage to the workpiece surface, in particular the outer periphery of the workpiece, by chips arranged between the outer periphery of the workpiece and the circumferential wall of the tool is effectively prevented. This ensures a very high machining quality together with a high stability of the tool. Furthermore, the chip-passing recess advantageously reduces the weight of the tool, which has a positive effect on the machining accuracy in the case of large projection lengths.Finally, the interface advantageously allows the tool to be connected to a counter interface, particularly preferably to a machine spindle of a machining center, and in particular allows rotary machining of the workpiece, such that either the tool or the workpiece is rotated about the virtual longitudinal axis of the tool, or both the tool and the workpiece are rotated relatively about the longitudinal axis of the tool. This advantageously allows at least the necessary machining steps of the workpiece, in particular both the internal machining and the external machining, to be performed in the same machining station, in particular a machining center, which significantly reduces the time and costs associated with machining the workpiece. In particular, the set-up and re-clamping times are significantly reduced.

[0006] In particular, the proposed tool makes it possible to completely machine a pot-shaped stator housing for an electric motor on a single machine, in particular a machining centre: both the inner diameter, i.e. the inner circumferential surface, and the outer diameter, i.e. the outer circumferential surface, of the pot-shaped stator housing can be machined on the same machine, in particular a machining centre.

[0007] In preferred embodiments of the tool, the interface is configured as a hollow shank taper interface, a steep taper interface, a Morse taper interface, or in another suitable manner.

[0008] In the context of the present technical teaching, an axial or longitudinal direction is understood in particular as a direction extending along the longest extension, preferably along the axis of symmetry or rotation, of a tool that is preferably cylindrically symmetric, in particular rotationally symmetric. A radial direction is perpendicular to the axial direction. A circumferential direction concentrically surrounds the axial direction.

[0009] In a preferred embodiment, the tool comprises exactly one cutting edge. In another preferred embodiment, the tool comprises multiple cutting edges.

[0010] In a preferred embodiment, the tool comprises exactly one chip-passing recess. In another preferred embodiment, the tool comprises a plurality of chip-passing recesses.

[0011] In a preferred embodiment of the tool, the substrate is configured to be circular, cylindrical or rotationally symmetric.

[0012] In a preferred embodiment of the tool, the substrate is configured in a tubular shape.

[0013] In a preferred embodiment of the tool, at least one cutting edge is arranged on the peripheral wall of the basic body.

[0014] In particular, at least one cutting edge has a geometrically defined or geometrically determined cutting edge.

[0015] In a preferred embodiment of the tool, the at least one cutting edge is configured as a cutter plate, cutting insert or indexable insert with at least one geometrically defined or geometrically determined cutting edge.

[0016] In particular, the at least one cutting edge is in machining engagement with the outer peripheral surface of the workpiece when the workpiece is at least partially received in the mounting space.

[0017] According to a further development of the invention, it is provided that the tool comprises a plurality of cutting edges as the at least one cutting edge, the peripheral wall comprises a plurality of chip-passing recesses, and at least one cutting edge of the plurality of cutting edges is assigned to each chip-passing recess of the plurality of chip-passing recesses in such a way that a chip removed by the assigned cutting edge can exit from the mounting space to the outer peripheral area through the assigned chip-passing recess. It is possible to assign exactly one cutting edge of the plurality of cutting edges to each chip-passing recess of the plurality of chip-passing recesses. However, it is also possible to assign a plurality of cutting edges, in particular at least two cutting edges, to at least one chip-passing recess of the plurality of chip-passing recesses. However, preferably, one, in particular exactly one chip-passing recess is assigned to each cutting edge of the plurality of cutting edges, so that for each cutting edge of the plurality of cutting edges, a chip removed by the respective cutting edge can exit radially to the outer peripheral area through the assigned chip-passing recess. If the tool comprises a plurality of chip-passing recesses, this also advantageously reduces the weight of the tool and the concept of lightweight construction is also taken into account.

[0018] According to a further development of the invention, it is provided that the at least one chip-passing recess is configured to be closed along a circumferential line of the closed recess. The circumferential line of the recess runs around a radial vector perpendicular to the axial direction of the tool and passes through the chip-passing recess. The circumferential line of the recess is therefore a line surrounding the periphery of the chip-passing recess and not the periphery of the tool. The term "periphery" therefore refers here to the periphery of the chip-passing recess and not to the periphery of the tool. In this case, the at least one chip-passing recess is configured in particular as a window in the peripheral wall. In particular, the chip-passing recess is in particular completely surrounded by the material of the peripheral wall and / or by the material of another tool part, for example the front cutting ring. In this way, the stability in particular of the basic body and thus also of the entire tool is increased.

[0019] According to a further development of the invention, it is provided that the circumferential wall has at least one additional recess, which advantageously contributes to a further weight reduction of the tool, so that the tool can be constructed in a particularly lightweight manner, whereby particularly lightweight construction concepts are taken into account.

[0020] In particular, in contrast to the chip-passing recesses, the additional recesses are not assigned cutting edges, and therefore in particular do not have cutting edges, and in particular are not used for chip passage.

[0021] According to a further development of the invention, it is provided that the at least one additional recess extends through the peripheral wall. In particular, the mounting space opens into the outer peripheral area in the region of the additional recess. This design results in a significant weight reduction of the tool.

[0022] Alternatively, at least one additional recess is preferably closed on at least one side in the radial direction. The additional recess is preferably closed towards the mounting space or towards the outer peripheral region of the tool or on both sides. Additional recesses closed on both sides can in particular be manufactured by generative or additive manufacturing processes.

[0023] In one embodiment, the peripheral wall is thinned in the region of the additional recess, i.e. its wall thickness is reduced. However, the peripheral wall still has a finite wall thickness in the region of the additional recess. In particular, the additional recess is configured as a pocket in the peripheral wall. In particular, the additional recess therefore has a bottom which separates the volume of the additional recess from the mounting space or from the outer peripheral region. At least one additional recess closed towards the mounting space also leads to a significant weight reduction of the tool, which at the same time has a significantly greater stability than if the additional recess extends through the peripheral wall.

[0024] In preferred embodiments of the tool, the peripheral wall has at least one additional recess extending therethrough and at least one additional recess closed on at least one side. Various embodiments of the additional recesses can therefore also be advantageously combined with one another, in particular to simultaneously reduce the weight of the tool and increase its stability.

[0025] According to a further development of the invention, it is provided that the at least one cutting edge is arranged on an orbital circle having a diameter of at least 170 mm and up to 300 mm, preferably at least 180 mm and up to 280 mm, preferably at least 190 mm and up to 270 mm, preferably at least 200 mm and up to 260 mm. The tool is therefore advantageously adapted for machining workpieces having a particularly large outer diameter.

[0026] According to a further development of the invention, it is provided that the mounting space has a length from the opening end face to a base face opposite the opening end face in the axial direction, said length corresponding to the orbital circle multiplied by a factor of at least 0.8 to at most 3.5, preferably at least 2 to at most 3, preferably at least 1.5 to at most 2.5. The tool is therefore configured for machining workpieces having a particularly large projection length. In particular, the opening end face is arranged opposite the interface in the axial direction. The mounting space is open in the region of the end face, such that the workpiece can be inserted into the mounting space from the opening end face. In particular, the opening end face surrounds an opening of the mounting space, through which the workpiece can be inserted into the mounting space. The base face is arranged in the longitudinal direction on the interface side. Preferably, the interface is configured integrally with the base face or is connected in the form of a multi-part.

[0027] According to a further development of the invention, it is provided that the tool comprises at least one first cutting edge and at least one second cutting edge as the at least one cutting edge, the at least one first cutting edge being arranged offset in the axial direction of the base body with respect to the at least one second cutting edge. Furthermore, the at least one first cutting edge is assigned a first orbital circle different from the second orbital circle assigned to the at least one second cutting edge. Thus, the at least one first cutting edge and the at least one second cutting edge are not only axially offset but also radially offset with respect to each other. This advantageously allows for stepped external machining of the workpiece, in particular for simultaneous or successive machining of several different external diameters of the same workpiece.

[0028] According to a further development of the invention, it is provided that the base body and the interface are configured in the form of multiple parts and are connected to each other. This advantageously allows in particular the interface to be manufactured separately from the base body, in particular from a different material. This in turn allows in particular the interface to be provided with a higher degree of rigidity and / or stability than the base body, which is advantageous since generally higher forces are applied in the region of the interface. At the same time, the base body can be configured to be lightweight but stable.

[0029] In a preferred embodiment of the tool, it is provided that the interface is connected to the substrate, in particular the base surface, with a positive, frictional and / or material connection. Preferably, the interface is screwed to the substrate, in particular the base surface.

[0030] In an alternative preferred embodiment of the tool, the interface is constructed integrally with the base body, preferably from the same material, which allows the tool to be manufactured in a particularly cost-effective and simple manner.

[0031] According to a further embodiment of the invention, it is provided that the base comprises a first material and the interface comprises a second material. In particular, the first material is a different material from the second material. In particular, the base and the interface therefore comprise or are made of different materials. This advantageously allows the selection of materials to be optimized for the interface on the one hand and for the base on the other hand with respect to different desired properties. In particular, it is possible to provide an increased stiffness and / or stability for the interface, and the base can be configured to be lightweight and stable at the same time.

[0032] In a preferred embodiment of the tool, the first material has a lower density than the second material, which means that the base body can be constructed to be particularly light, while at the same time the interface can be constructed to be particularly stiff and / or stable.

[0033] In a preferred embodiment of the tool, the first material is a light metal and the second material is steel. Preferably, the first material is aluminum or an aluminum alloy. The selection of corresponding materials allows a lightweight and stable design of the base body at the same time as a rigid and / or stable design of the interface.

[0034] A further development of the invention provides that a cutting ring with at least one cutting edge is arranged on the open end face of the basic body, which makes it possible to advantageously machine the end faces of the workpiece, i.e. in particular the axially vertical faces, in addition to the peripheral face.

[0035] In a preferred embodiment, the cutting ring comprises exactly one cutting edge. In another preferred embodiment, the cutting ring comprises a plurality of cutting edges. Preferably, the cutting ring comprises as the at least one cutting edge at least one first cutting edge and at least one second cutting edge, the at least one first cutting edge being arranged radially offset on the cutting ring with respect to the at least one second cutting edge.

[0036] In particular, at least one leading cutting edge has a geometrically defined or geometrically determined cutting edge.

[0037] In a preferred embodiment of the tool, the at least one pre-cutting edge is configured as a cutter plate, cutting insert or indexable insert with at least one geometrically defined or geometrically determined cutting edge.

[0038] In a preferred embodiment of the tool, the cutting ring is constructed in a multi-part manner together with the base body and is connected to the base body, in this way the choice of material for the cutting ring on the one hand and for the base body on the other hand can be advantageously optimized with respect to the properties required in each case.

[0039] In a preferred embodiment of the tool, the cutting ring comprises a third material having a higher density than the first material of the base body. That is, the cutting ring can be advantageously configured to be more stable and / or harder than the base body. Preferably, the cutting ring also advantageously contributes to the overall stability of the tool. Preferably, the third material is the same material as the second material of the interface.

[0040] In a preferred embodiment of the tool, the third material is steel.

[0041] In a preferred embodiment of the tool, the cutting ring has at least one chip flute assigned to at least one cutting edge, which is arranged and configured in such a way that chips removed by the at least one cutting edge can be removed, in particular radially, and / or axially in the direction of the interface, via the chip flute assigned to the cutting edge. Preferably, each cutting edge of the cutting edges of the cutting ring is assigned, in particular, a separate chip flute.

[0042] According to a further development of the invention, it is provided that the at least one cutting edge is configured integrally with the circumferential wall. Preferably, the at least one cutting edge is machined out of the circumferential wall. Preferably, the cutting edge, in particular the cutting edge of the cutting edge, is coated with a hard material.

[0043] In an alternative embodiment of the tool, it is provided that at least one cutting edge is materially connected to the circumferential wall. Preferably, the at least one cutting edge is glued, welded or soldered to the circumferential wall.

[0044] In an alternative embodiment of the tool, it is provided that the at least one cutting edge is attached to the circumferential wall with a positive and / or frictional connection. Preferably, the at least one cutting edge is screwed to the circumferential wall.

[0045] Alternatively or additionally, it is preferred that the at least one cutting edge is adjustably arranged on the circumferential wall. In this way, the position, in particular in the axial and / or radial direction, of the at least one cutting edge can be advantageously set and, in particular, finely adjusted. In this way, the machining diameter, i.e., in particular the orbital circle, of the at least one cutting edge can be adjusted with high precision.

[0046] In a preferred embodiment of the tool, it is provided that at least one cutting edge is accommodated in a cutting edge cassette, which is arranged in the circumferential wall, in particular fixed, preferably screwed. The cutting edge can be connected to the cutting edge cassette with a material connection, in particular by gluing, soldering and / or welding, or with a positive and / or frictional connection, in particular by screwing. In a preferred embodiment, the cutting edge cassette can be provided with an adjustment mechanism of the tool that is configured to adjust the axial and / or radial position of the cutting edge or that is provided in the circumferential wall and acts on the cutting edge cassette, thereby adjusting the cutting edge indirectly via the adjustment of the cutting edge cassette.

[0047] In one embodiment of the tool, it is provided that at least one cutting edge is configured integrally with the cutting ring. Preferably, the cutting edge is machined from the cutting ring. Preferably, the cutting edge, in particular the cutting edge of the cutting edge, is coated with a hard material.

[0048] In an alternative embodiment of the tool, it is provided that the at least one cutting edge is materially connected to the cutting ring. Preferably, the at least one cutting edge is glued, welded or soldered to the cutting ring.

[0049] In an alternative embodiment of the tool, it is provided that the at least one cutting edge is attached to the cutting ring with a positive and / or frictional connection. Preferably, the at least one cutting edge is screwed to the cutting ring.

[0050] Alternatively or additionally, it is preferably provided that the at least one cutting edge is adjustably arranged on the cutting ring. In this way, the position, in particular in the axial and / or radial direction, of the at least one cutting edge can be advantageously set and in particular finely adjusted. In this way, the machining diameter, i.e. in particular the orbital circle, of the at least one cutting edge can be adjusted with high precision.

[0051] In a preferred embodiment of the tool, it is provided that at least one cutting edge is accommodated in a cutting edge cassette, which is arranged, in particular fixed, preferably screwed, in the cutting ring. The cutting edge can be connected to the cutting edge cassette with a material connection, in particular by gluing, soldering or welding, or with a positive and / or frictional connection, in particular by screwing. In a preferred embodiment, the cutting edge cassette can be provided with an end adjustment mechanism of the tool that is configured to adjust the axial and / or radial position of the cutting edge, or that is provided on the cutting ring and acts on the cutting edge cassette, so that the cutting edge can be adjusted indirectly by adjusting the cutting edge cassette.

[0052] According to a further development of the invention, it is provided that at least one guide bar is arranged on the basic body, which engages in the mounting space. In this way, the tool is advantageously configured for fine machining, in particular for finish machining, of the peripheral surface of the workpiece. On the other hand, if the tool does not have such a guide bar, it can be configured in particular for pre-machining of the peripheral surface of the workpiece.

[0053] According to a further development of the invention, it is provided that the peripheral wall with the at least one chip-passing recess comprises a plurality of recesses, each recess of the plurality of recesses being selected from the group consisting of a chip-passing recess and an additional recess. This allows the basic body to be constructed in a particularly lightweight manner. The at least one chip-passing recess is therefore in particular one of the recesses.

[0054] In one embodiment of the tool, the recesses are arranged such that the material of the casing is not recessed in the area of ​​the load paths occurring during machining of the workpiece. In particular, the recesses are preferably arranged such that the material of the casing is not recessed only at the places where the load paths occur during machining of the workpiece. In particular, the recesses, in particular the chip-passage recesses and the additional recesses, are surrounded by webs or struts forming the casing, which run along the load paths. In particular, the basic body is constructed in a pseudolattice-like manner. The tool thus advantageously has a very high stability at a very low weight in the sense of a lightweight construction concept. [Brief description of the drawings]

[0055] The invention is explained in more detail below with reference to the drawings. [Figure 1] FIG. 1 shows a first view of a first embodiment of the tool. [Diagram 2] FIG. 2 shows a second view of a first embodiment of the tool according to FIG. [Diagram 3] FIG. 3 shows a detailed view of a first embodiment of the tool according to FIGS. 1 and 2; [Figure 4] FIG. 2 shows a view of a second embodiment of the tool. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0056] 1 shows a first view of a first embodiment of a tool 1 for machining the outer peripheral surface of a workpiece (not shown). The tool 1 comprises an interface 3, which is configured for mounting the tool 1 to a counter interface, in particular of a machining center, in particular of a machine spindle. The tool 1 also has an at least partially cylindrical, preferably circular cylindrical, in particular tubular, basic body 5. The basic body 5 has a peripheral wall 7, which circumferentially surrounds a mounting space 9 and is configured to be open in the area of ​​a front face 11. In this way, the workpiece can be at least partially inserted into the mounting space 9 via the open front face 11 and held in the mounting space 9.

[0057] The longitudinal or axial direction of the tool 1 extends along the longitudinal axis or axis of rotation A of the tool 1. The radial direction is perpendicular to the longitudinal axis A and the circumferential direction concentrically surrounds the longitudinal axis A.

[0058] At least one cutting edge 13, which engages in the mounting space 9, is arranged on the basic body 5 and is configured to machine the peripheral surface of the workpiece. In particular, a plurality of cutting edges 13 are arranged on the basic body 5. The cutting edge 13 can be configured integrally with the casing 7. However, in the embodiment shown, the cutting edge 13, which is preferably configured as a cutting insert, is preferably configured in the form of a multi-piece together with the casing 7 and is attached to the casing 7. Fixation by material connection as well as by form-fitting and / or friction-fitting is possible. Preferably, the cutting edge 13 is adjustably arranged on the casing 7. In the embodiment shown, the cutting edge 13 is held in a cutting edge cassette 15, in particular screwed to the cutting edge cassette 15, which in turn is screwed to the casing 7.

[0059] The peripheral wall 7 also has at least one chip-passing recess 17, which is arranged relative to the at least one cutting edge 13 in such a way that chips removed by the at least one cutting edge 13 during machining of the workpiece can exit radially from the mounting space 9 to an outer peripheral area 19 of the basic body 5 through the at least one chip-passing recess 17. In particular, the embodiment of the workpiece 1 shown here comprises a plurality of such chip-passing recesses 17, in particular each cutting edge 15 corresponding to a chip-passing recess 17.

[0060] The tool 1 is constructed to be lightweight and at the same time stable, allowing high-quality machining, in particular in machining centres, of workpieces, in particular with large outside diameters and large overhang lengths.

[0061] The chip-passage recesses 17 are preferably each configured to be closed along the circumferential line of the closed recess and, as a result, are surrounded in particular by the material of the peripheral wall 7 and thus form pseudo-windows in the peripheral wall 7 .

[0062] At least one cutting edge 13 is preferably arranged on an orbital circle having a diameter of at least 170 mm to a maximum of 300 mm, preferably at least 180 mm to a maximum of 280 mm, preferably at least 190 mm to a maximum of 270 mm, preferably at least 200 mm to a maximum of 260 mm.

[0063] The mounting space 9 preferably has a length from the end face 21 arranged on the front face 11 to the opposite base face 23 in the direction of the longitudinal axis A, which length corresponds to the orbital circle of at least one cutting edge 13 multiplied by a factor of at least 0.8 and at most 3.5, preferably at least 2 and at most 3, preferably at least 1.5 and at most 2.5.

[0064] Preferably, the tool 1 comprises as the at least one cutting edge 13 at least one first cutting edge 13.1 and at least one second cutting edge 13.2, the first cutting edge 13.1 being arranged offset in the direction of the longitudinal axis A relative to the second cutting edge 13.2 and at the same time offset in the radial direction. In particular, a first orbital circle is thus assigned to the first cutting edge 13.1, which is different from a second orbital circle assigned to the second cutting edge 13.2. In this way, stepped external machining of the workpiece is possible.

[0065] A cutting ring 27 with at least one leading cutting edge 25 is preferably arranged on the front face 11, which is preferably constructed in multiple parts together with the basic body 5 and is connected to the basic body 5, in particular by screwing. In particular, the cutting ring 27 preferably has an end face 21. The leading cutting edge 25 is preferably screwed to the cutting ring 27. The cutting ring 27 preferably has at least one chip discharge groove 29, via which chips removed by the at least one leading cutting edge 25 can be discharged to the outside, in particular radially and / or axially backward in the direction of the interface 3. Preferably, a chip discharge groove 29 is assigned to each leading cutting edge 25.

[0066] FIG. 2 shows a second view of the first embodiment of the tool 1 according to FIG.

[0067] Identical and functionally identical elements are provided with the same reference numbers in all figures, and reference is made in each case to the preceding description.

[0068] In the embodiment shown, the interface 3 is configured as a hollow shank taper interface. In alternative embodiments, the interface 3 may be configured as a steep taper interface, a Morse taper interface, or in another suitable manner.

[0069] Preferably, the interface 3 is configured in a multi-part manner together with the base body 5 and is connected to the base body 5 in particular with a positive, frictional and / or material connection. Preferably, the interface 3 is screwed to the base body 5, in particular to the base surface 23.

[0070] Preferably, the substrate 5 comprises a first material and the interface 3 comprises a second material. Preferably, the first material has a lower density than the second material, in particular the first material is a light metal, in particular aluminium or an aluminium alloy, and the second material is steel.

[0071] The cutting ring 27 preferably comprises a third material having a higher density than the first material of the base body 5, the third material being preferably steel.

[0072] Figure 3 shows a detailed view of a first embodiment of the tool 1 according to figures 1 and 2. The cutting edges 13 and their corresponding chip-passing recesses 17 can be particularly well seen in this view.

[0073] 4 shows a view of a second embodiment of the tool 1. The peripheral wall 7 preferably has at least one, but in this case several, additional recesses 31, of which only some are designated with corresponding reference signs for a clearer representation. In the embodiment shown, the additional recess 31 extends through the peripheral wall 7, so that the mounting space 9 opens via the additional recess 31 to the outer peripheral area 19. In contrast to the chip-passing recess 17, the additional recess 31 is not assigned a cutting edge 13. The chip-passing recess 17 and the additional recess 31 are collectively referred to as recesses 32.

[0074] In another embodiment, the additional recesses 31 can be configured to be closed in the radial direction at least on one side, in particular towards the mounting space 9. Alternatively, the additional recesses 31 can be closed towards the outer peripheral region 19 or closed on both sides. Also possible are embodiments in which at least one of the additional recesses 31 extends through the peripheral wall 7 and at least one other of the additional recesses 31 is configured to be closed at least on one side.

[0075] The recesses 32, i.e. the chip-passage recesses 17 and the additional recesses 31, are preferably arranged in such a way that the material of the wall 7 is not recessed in the areas where load paths arise during machining of the workpiece. In this way, the tool 1 is constructed in a pseudo-grid manner and is lightweight and at the same time very stable.

[0076] At least one guide bar 33, which engages in the mounting space 9, is preferably arranged on the basic body 5. In the embodiment shown, a number of guide bars 33 are provided, only some of which are given corresponding reference numbers for the sake of clarity. By means of the guide bars 33, the tool 1 is configured in particular for finishing workpieces.

[0077] The embodiment of the tool 1 shown here comprises in particular a first chip-passing recess 17.1 and a second chip-passing recess 17.2, which are designed differently from one another in particular in that the first chip-passing recess 17.1 is designed to be closed along the circumferential line of the closed recess, whereas the second chip-passing recess 17.2 is designed to be open at the front face. However, in this configuration of the tool 1 it is also possible to arrange a cutting ring on the front face 11, in which case the second chip-passing recess 17.2 is also closed.

[0078] It is also possible for the first embodiment of the tool 1 shown in FIG.

Claims

1. A tool (1) for machining an outer peripheral surface of a workpiece, an interface (3) configured to fasten the tool (1) to a counter interface; a substrate (5) which is at least partially cylindrical, The base body (5) has a peripheral wall (7) surrounding a mounting space (9) and is configured to have an opening at its front side so that the workpiece can be at least partially accommodated in the mounting space (9); At least one cutting edge (13) engaging with the mounting space (9) is arranged on the base body (5) for machining the outer peripheral surface of the workpiece; The tool (1), wherein the peripheral wall (7) has at least one chip-passing recess (17), which is arranged relative to the at least one cutting edge (13) such that chips removed by the at least one cutting edge (13) during machining of the workpiece can pass through the at least one chip-passing recess (17) from the mounting space (9) to an outer peripheral area (19) of the base body (5).

2. 2. The tool (1) according to claim 1, wherein the tool (1) comprises a plurality of cutting edges (13) as the at least one cutting edge (13), the peripheral wall (7) comprises a plurality of chip-passing recesses (17), and at least one cutting edge (13) of the plurality of cutting edges (13) is assigned to each chip-passing recess (17) of the plurality of chip-passing recesses (17) such that a chip removed by the assigned cutting edge (13) can exit from the mounting space (9) to the outer peripheral area (19) through the assigned chip-passing recess (17).

3. The tool (1) according to claim 1, wherein the at least one chip-passing recess (17) is configured to be closed along a circumferential line of a closed recess.

4. The tool (1) according to claim 1, wherein the peripheral wall (7) comprises at least one additional recess (31).

5. The at least one additional recess (31) extending through said peripheral wall (7); or The tool (1) according to claim 4, adapted to be closed on at least one side.

6. The tool (1) according to claim 1, wherein the at least one cutting edge (13) is arranged on an orbital circle having a diameter of at least 170 mm to a maximum of 300 mm, preferably at least 180 mm to a maximum of 280 mm, preferably at least 190 mm to a maximum of 270 mm, preferably at least 200 mm to a maximum of 260 mm.

7. 2. The tool (1) according to claim 1, wherein the mounting space (9) has a length from the open end face (21) to the opposite base face (23), said length corresponding to the orbital circle multiplied by a factor of at least 0.8 and at most 3.5, preferably at least 2 and at most 3, preferably at least 1.5 and at most 2.

5.

8. 2. The tool (1) according to claim 1, wherein the at least one cutting edge (13) comprises at least one first cutting edge (13.1) and at least one second cutting edge (13.2), the at least one first cutting edge (13.1) being arranged offset in the axial direction of the base body (5) with respect to the at least one second cutting edge (13.2), and further wherein the at least one first cutting edge (13.1) is assigned a first orbital circle different from a second orbital circle assigned to the at least one second cutting edge (13.2).

9. The tool (1) according to claim 1, wherein the base body (5) and the interface (3) are constructed in multiple parts and connected to each other.

10. 2. The tool (1) according to claim 1, wherein the base body (5) comprises a first material and the interface (3) comprises a second material, preferably the first material having a lower density than the second material, in particular the first material is a light metal, in particular aluminium or an aluminium alloy, and the second material is steel.

11. 2. The tool (1) according to claim 1, wherein a cutting ring (27) with at least one leading cutting edge (25) is arranged on an open end face of the base body (5), the cutting ring (27) is preferably constructed together with the base body (5) in a multi-part form and is connected to the base body (5), preferably the cutting ring (27) comprises a third material having a higher density than the first material of the base body (5), further preferably the third material is steel.

12. The at least one cutting edge (13) being integral with said peripheral wall (7), or connected to said peripheral wall (7) by a material connection, or attached to said peripheral wall (7) with a positive and / or frictional fit, or 2. The tool (1) according to claim 1, which is adjustably arranged on the peripheral wall (7).

13. 2. The tool (1) according to claim 1, wherein at least one guide bar (33) engaging in said mounting space (9) is arranged on said base body (5).

14. 2. The tool (1) according to claim 1, wherein the peripheral wall (7) including the at least one chip-passing recess (17) comprises a plurality of recesses (32), each recess (32) of the plurality of recesses (32) being selected from the group consisting of a chip-passing recess (17) and an additional recess (31), preferably the plurality of recesses (32) being arranged such that the material of the peripheral wall (7) is not recessed in the area of ​​load paths occurring during machining of the workpiece.

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