Tool for machining a workpiece

Abstract

The invention relates to a tool (1) for machining a workpiece, having • a tool body (3) with a centre axis (5), • at least one cutting element carrier (7), which is arranged in a displaceable manner on an effective end (9) of the tool body (3) along a displacement direction relative to the centre axis (5) such that a machining diameter of the tool (1) is changed when the at least one cutting element carrier (7) is displaced along the displacement direction, wherein the cutting element carrier (7) has at least one cutting element (11) for machining the workpiece, and • a displacement device (13) which is arranged within the tool body (3) and has a drive element (15) which can be displaced along the centre axis (5) and has at least one displacement member (17) effectively connected to an allocated cutting element carrier (7) of the at least one cutting element carrier (7), wherein the at least one displacement member (17) projects from the drive element (15) in a projection direction oriented parallel to the displacement direction and has a first movement transfer element (19) spaced apart from the drive element (15) in the projection direction, wherein the first movement transfer element (19) is configured to convert a displacement of the drive element (15) along the centre axis (5) into a displacement of the cutting element carrier (7) assigned to the displacement member (17) along the displacement direction.

Description

[0001] DESCRIPTION

[0002] Tool for machining a workpiece

[0003] The invention relates to a tool for machining a workpiece, in particular an inner surface of a stator housing of an electric motor having an inner diameter.

[0004] Such a tool, also referred to as a control tool, has a tool body with a central axis, at least one cutting element carrier, and a displacement device arranged within the tool body.

[0005] The cutting element carrier is arranged at an effective end of the tool body so that it can be displaced relative to the central axis along a displacement direction such that a machining diameter of the tool is changed when the at least one cutting element carrier is displaced along the displacement direction. Furthermore, the cutting element carrier has at least one cutting element for machining the workpiece.

[0006] The displacement device has a drive element that can be displaced along the central axis. The drive element is operatively connected to the at least one cutting element carrier and has a first motion transmission element. The first motion transmission element is configured to convert a displacement of the drive element along the central axis into a displacement of the associated cutting element carrier along the displacement direction.

[0007] The drive element typically has four flat shell sides enclosing the central axis in the region of the active end. The drive element can be cuboid or cube-shaped in this region. First motion transmission elements, usually in the form of toothed surface elements, are arranged on the shell sides. The first motion transmission elements are typically formed integrally with the drive element. Up to four associated cutting element carriers, in contrast, have second motion transmission elements. The first motion transmission elements are each operatively connected to an associated second motion transmission element and are configured to convert the displacement of the drive element along the central axis, together with the second motion transmission element, into the displacement of the associated cutting element carriers along the displacement direction.

[0008] In this way, up to four cutting element carriers can be moved simultaneously, in particular at the same time, along the direction of displacement.

[0009] The displacement of the cutting element carriers leads to an increase or decrease in the cutting circle diameter of the cutting elements arranged on the cutting element carriers.

[0010] Due to the design of the tool, the shell side with the associated first motion transmission element, in particular the associated tooth surface element, of the drive element and the displacement direction of the cutting element carrier associated with the first motion transmission element are not arranged in the same circular sector, but are offset by 90° around the central axis.

[0011] This is because the direction of displacement and the tooth surface element causing the displacement must be arranged parallel, since the displacement takes place in a plane parallel to the plane of the tooth surface element.

[0012] Due to the necessary offset of 90° and a maximum number of degrees of a full circle of 360°, a maximum of four cutting element carriers can be provided and relocated in such a design.

[0013] Especially for thin-walled components, especially stator housings, machining with four cutting element carriers has proven to be unsatisfactory in terms of surface quality, dimensional accuracy, and shape and position tolerances.

[0014] Furthermore, replacing the tooth surface elements once a predetermined wear limit has been exceeded proves to be material-intensive and costly. Since the tooth surface elements are usually formed integrally with the drive element, the entire tool must be disassembled to replace the tooth surface elements. In particular, the entire drive element must be replaced, even if, for example, only one of the four tooth surface elements is worn. Due to the angular offset between the respective shell side and the displacement direction of the cutting element carrier assigned to the shell side, the cutting element carrier must extend towards the assigned tooth surface element, which is space- and material-intensive, in order to implement a displacement of the cutting element carrier in the displacement direction. This disadvantageously increases the rotating mass of the tool, thereby limiting the maximum machining speed.

[0015] The invention is therefore based on the object of creating a tool for machining a workpiece, wherein the disadvantages mentioned are reduced, preferably not occurring.

[0016] The problem is solved by providing the present technical teaching, in particular the teaching of the independent claims as well as the preferred embodiments disclosed in the dependent claims and the description.

[0017] The problem is solved in particular by providing a tool for machining a workpiece, in particular an inner circumferential surface of a stator housing of an electric motor having an inner diameter. The tool has a tool body - in particular a partially cylindrical tool body - with a central axis. In particular, the tool body extends along the central axis. The tool further has at least one cutting element carrier, which is arranged at an active end of the tool body so as to be displaceable along a displacement direction relative to the central axis, in particular toward or away from the central axis, such that a machining diameter of the tool is changed when the at least one cutting element carrier is displaced along the displacement direction. The cutting element carrier has at least one cutting element for machining the workpiece.The tool further comprises a displacement device arranged within the tool body. The displacement device comprises a drive element displaceable along the central axis and at least one displacement member operatively connected to a cutting element carrier of the at least one cutting element carrier, each associated with the displacement member. The at least one displacement member protrudes from the drive element in a removal direction oriented parallel to the displacement direction. The at least one displacement member comprises a first motion transmission element spaced from the drive element in the removal direction and associated with the respective displacement member.The first movement transmission element is configured to convert a displacement of the drive element along the central axis into a displacement of that cutting element carrier along the displacement direction which is assigned to the displacement member which in turn is assigned to the respective first movement element.

[0018] Due to the spacing of the first movement transmission element from the drive element, in particular its relocation away from the central axis, it is advantageously possible to provide more than four cutting element carriers and to relocate them, in particular simultaneously, in order to change the machining diameter.

[0019] In particular, the first motion transmission element and the displacement direction of the cutting element carrier associated with the first motion transmission element, in particular the cutting element carrier itself, are advantageously arranged in the same circular sector. Advantageously, a spacing in the circumferential direction of the flight circle by an angular amount of 90° around the central axis is avoided. The cutting element carrier no longer needs to extend toward the associated tooth surface element, which is space- and material-intensive. Instead, the first motion transmission element is relocated toward the cutting element carrier by the projecting and comparatively space-saving displacement element.

[0020] Advantageously, the first motion transmission element can be replaced independently of the drive element when its predetermined wear limit is exceeded. This makes it possible to replace only those first motion transmission elements for which the predetermined wear limit has actually been exceeded. The optionally other first motion transmission elements for which the wear limit has not been exceeded, in particular not yet, can continue to be used. This advantageously eliminates the need to replace the entire drive element. Maintenance effort and costs are thus reduced.

[0021] By constructively relocating the first motion transmission element, the rotating masses of the tool are reduced, which advantageously allows a maximum machining speed to be increased.

[0022] The fact that the displacement member protrudes from the drive element in a projection direction oriented parallel to the displacement direction means in particular in the context of the present teaching that at least one imaginary point on the displacement member lies on a first imaginary circle around the central axis, which has a larger diameter than a second imaginary circle around the central axis, on which an imaginary point on the drive element lies, which of all possible imaginary points of the drive element along a radial direction has the greatest distance from the central axis.

[0023] In particular, the drive element extends, starting from the central axis in a radial direction, to a radially outermost point of the drive element. In particular, an extension of the displacement member in the radial direction begins at a radially innermost point of the displacement member, which is in particular closer to the central axis than the radially outermost point of the drive element. In particular, the displacement member extends to a radially outermost point of the displacement member, which is further spaced from the central axis than the radially outermost point of the drive element.

[0024] In particular, the tool body has a clamping end opposite the effective end.

[0025] An active end is understood in particular to be an end of the tool body that is intended to face a workpiece to be machined. A clamping end is understood in particular to be an end of the tool that is intended to face away from the workpiece to be machined and that lies opposite the active end along the central axis. In one embodiment, the clamping end is designed to be connected to a processing machine, for example a machining center, in particular a machine spindle or an adapter or the like. In particular, the clamping end has a clamping interface. In particular, the clamping interface is designed to connect the tool to the processing machine or the like, in particular to be clamped by a work head or a spindle of the processing machine.

[0026] In particular, the clamping interface is selected from a group consisting of: a KSK chuck and a flange holder, in particular a module holder, in particular a module flange.

[0027] In particular, the flange mount has a plurality of mounting holes and a centering element. In particular, the drive element has a coupling region in the region of the clamping end, which is configured to interact with the processing machine for displacing the drive element along the central axis.

[0028] In one embodiment, the cutting element carrier has exactly one cutting element for machining the workpiece.

[0029] In one embodiment, the displacement member has exactly one first movement transmission element.

[0030] In one embodiment, the cutting element carrier is particularly designed and configured to hold an indexable insert as the cutting element for machining a workpiece.

[0031] An axial direction, here and in the following, refers to a direction along the central axis. A radial direction is perpendicular to the axial direction and thus to the central axis; a circumferential direction encompasses the central axis and thus concentrically encompasses the axial direction.

[0032] In particular, the tool is displaced in the axial direction at a specific feed rate to machine the inner diameter. The movable cutting element carriers are used to adjust the infeed, in particular the inner diameter of the workpiece to be machined. In particular, the tool rotates around the central axis to machine the workpiece. Alternatively, it is also possible for the workpiece to rotate around the central axis, in which case the tool remains stationary. It is also conceivable for the tool and the workpiece to rotate—in particular in opposite directions.

[0033] According to a further development of the invention, the displacement direction is oriented transversely or skewed, in particular perpendicular to the central axis. In particular, this arrangement allows machining forces, particularly in the radial direction, to be particularly well introduced into the tool and supported. Furthermore, a particularly precise displacement of the at least one cutting element carrier is possible.

[0034] Since the removal direction is oriented parallel to the displacement direction, the removal direction is also oriented transversely or skewwise, in particular perpendicular to the central axis. In particular, the displacement direction and the removal direction—i.e., both directions—are oriented transversely or skewwise, in particular perpendicular to the central axis. In one embodiment, the displacement direction is oriented skewwise in such a way that the displacement direction is oriented parallel to a direction perpendicular to the central axis.

[0035] In one embodiment, the removal direction is in particular skewed in such a way that the displacement direction is oriented parallel to a direction oriented perpendicular to the central axis.

[0036] According to a further development of the invention, the at least one cutting element carrier comprises a second motion transmission element. The first motion transmission element of the associated displacement member is operatively connected to the second motion transmission element and is configured to convert the displacement of the drive element along the central axis, together with the second motion transmission element, into the displacement of the cutting element carrier along the displacement direction.

[0037] In particular, the first movement transmission element is formed in one piece with the displacement member or in several pieces with the displacement member.

[0038] In particular, the second movement transmission element is formed in several pieces to the cutting element carrier, in particular detachably fastened to the cutting element carrier.

[0039] Advantageously, the second motion transmission element can be replaced independently of the associated cutting element carrier when its predetermined wear limit is exceeded. This makes it possible to replace only those second motion transmission elements for which the predetermined wear limit has actually been exceeded. The optionally other second motion transmission elements for which the wear limit has not been exceeded, in particular not yet, can continue to be used. Maintenance effort and costs are thus reduced.

[0040] In one embodiment, the cutting element carrier has exactly one second motion transmission element.

[0041] According to a further development of the invention, the first motion transmission element comprises a first toothed surface element or is designed as a first toothed surface element. The second motion transmission element comprises a second toothed surface element or is designed as a second toothed surface element. The first toothed surface element and the second toothed surface element cooperate to convert the displacement of the drive element along the central axis into the displacement of the associated cutting element carrier along the displacement direction.

[0042] In particular, the first tooth surface element is formed in one piece with the first movement transmission element or in several pieces with the first movement transmission element.

[0043] In particular, the second tooth surface element is formed in one piece with the second movement transmission element or in several pieces with the second movement transmission element.

[0044] In one embodiment, the first movement transmission element has exactly one first tooth surface element.

[0045] In one embodiment, the second movement transmission element has exactly one second tooth surface element.

[0046] In one embodiment, the first motion transmission element has exactly one first tooth surface element and the second motion transmission element has exactly one second tooth surface element.

[0047] Due to the multi-piece design of a toothed surface element, selected from the first and second toothed surface elements, with the associated motion transmission element, the toothed surface element can advantageously be replaced individually when a predetermined wear limit is exceeded. This further reduces maintenance effort, particularly the cost of spare parts. In particular, replacing an associated displacement element is eliminated.

[0048] According to a further development of the invention, at least one tooth surface of a tooth surface element, selected from the first tooth surface element and the second tooth surface element, is oriented parallel to the displacement direction. This means, in particular, that a normal vector of the tooth surface is oriented perpendicular to the displacement direction. This orientation advantageously further optimizes the introduction of force into the tool. Furthermore, the tool is simultaneously comparatively light and compact. In particular, at least one tooth surface of a tooth surface element, selected from the first tooth surface element and the second tooth surface element, is oriented transversely or skewly, in particular perpendicular to the central axis. In particular, the normal vector of the tooth surface is oriented perpendicular to the central axis.In particular, the normal vector of the tooth surface is oriented both perpendicular to the central axis and perpendicular to the displacement direction.

[0049] Particularly preferably, both tooth surfaces of the first tooth surface element and the second tooth surface element are oriented parallel to the displacement direction.

[0050] According to a further development of the invention, the drive element comprises a tension-compression element or is designed as a tension-compression element. In particular, the tension-compression element advantageously makes it possible to increase and decrease the machining diameter of the tool, in particular to increase and decrease the cutting edge diameter.

[0051] In particular, the tension-compression element has a tension-compression rod - extending in particular along the central axis - or is designed as a tension-compression rod.

[0052] In particular, the tension-compression element has the coupling area in the area of ​​the clamping end.

[0053] According to a further development of the invention, the drive element has at least one fastening recess arranged on a front side of the drive element, in particular associated with the active end. The at least one displacement member is inserted into the associated at least one fastening recess in a form-fitting manner—particularly in certain regions, in particular with an insertion region. This advantageously makes it possible to replace the displacement member individually and independently of the drive element, for example, in the event of a defect or when the displacement member exceeds a predetermined wear limit.

[0054] The fastening recess has in particular a groove or an opening, or is designed as a groove or an opening.

[0055] The at least one displacement member is inserted into the associated fastening recess, in particular at the end face or from a side opposite the end face. In particular, the at least one displacement member is hooked into the associated fastening recess, in particular radially hooked, in particular radially hooked in a form-fitting manner.

[0056] Alternatively or additionally, the at least one displacement member is fastened to the drive element, in particular pressed in, screwed and / or pinned.

[0057] According to a further development of the invention, the tool body has a drive element receiving space extending from the clamping end of the tool body along the central axis in the direction of the active end, and adjoining this in the region of the active end, a displacement member receiving space. The tool body has a first diameter in the region of the drive element receiving space. The tool body has a second diameter different from the first diameter in the region of the displacement member receiving space. The second diameter is larger than the first diameter. The different diameters advantageously reduce the rotating masses of the tool.

[0058] According to a further development of the invention, the tool comprises at least two cutting element carriers. The at least two cutting element carriers are arranged along the circumferential direction encompassing the central axis, in particular spaced apart from one another. This advantageously reduces the resulting machining force introduced in the radial direction of the central axis.

[0059] According to a further development of the invention, the tool comprises at least four to a maximum of eight, preferably at least five to a maximum of seven, and preferably exactly six cutting element carriers. With this number of cutting element carriers, the advantages already explained above are realized in a special way.

[0060] In one embodiment, the tool is provided with six displacement elements and a drive element.

[0061] In one embodiment, the tool is provided with exactly one drive element.

[0062] According to a further development of the invention, the cutting element carrier comprises a cutting element clamping holder. The cutting element clamping holder is attached to the cutting element carrier in a removable, in particular replaceable, manner. The cutting element clamping holder is configured to attach, in particular clamp, a cutting element, in particular an indexable insert.

[0063] The invention is explained in more detail below with reference to the drawings, which show:

[0064] Fig. 1 is a schematic representation of an embodiment of a tool for machining,

[0065] Fig. 2 is a schematic representation of a displacement device of the tool from Figure 1,

[0066] Fig. 3 is a schematic, enlarged view of a single displacement member of the displacement device of Figure 2,

[0067] Fig. 4 is a schematic representation of a front view of the drive element and the displacement members of the displacement device of Figure 2,

[0068] Fig. 5 is a schematic representation of the drive element receiving space and the displacement member receiving space of the tool from Figure 1.

[0069] Figure 1 shows a schematic representation of an exemplary embodiment of a tool 1 for machining a workpiece, in particular an inner surface of a stator housing of an electric motor having an inner diameter.

[0070] The tool 1 has a preferably partially cylindrical tool body 3 with a central axis 5. The tool body 3 preferably extends along the central axis 5.

[0071] The tool 1 further comprises at least one—here six—cutting element carrier 7. For ease of illustration, one cutting element carrier 7—as the first cutting element carrier 7.1—of the six cutting element carriers 7 is used for explanation purposes, whereby the following description naturally also refers to the other cutting element carriers 7 of the at least one cutting element carrier 7.

[0072] The cutting element carrier 7 is arranged at an effective end 9 of the tool body 3 along a displacement direction represented by a first arrow A relative to the central axis 5, preferably towards the central axis 5 or away from the central axis 5, in such a way that a machining diameter - here schematically represented by a dashed flight circle D - of the tool 1 is changed when the at least one cutting element carrier 7 is displaced along the displacement direction (arrow A).

[0073] It is preferably provided that the displacement direction (arrow A) is oriented transversely or skewed, particularly preferably perpendicular to the central axis 5, i.e. in the radial direction.

[0074] The cutting element carrier 7 has at least one cutting element 11 - here an indexable insert - for machining the workpiece.

[0075] Preferably, the cutting element carrier 7 comprises a cutting element clamping holder 8. The cutting element clamping holder 8 is removably, in particular replaceably, attached to the cutting element carrier 7. The cutting element clamping holder 8 is configured to secure, in particular clamp, the cutting element 11, in particular the indexable insert.

[0076] It is preferably provided that the six cutting element carriers 7 are arranged at a distance from one another along a circumferential direction encompassing the central axis 5 - in particular represented by the flight circle D - preferably in a same plane oriented perpendicular to the central axis.

[0077] In one embodiment, it is provided that the tool 1 has at least four to a maximum of twelve, preferably at least five to a maximum of ten, preferably a maximum of eight, preferably exactly six cutting element carriers 7.

[0078] The tool 1 further comprises a displacement device 13 arranged within the tool body 3 and hidden from the viewer.

[0079] The displacement device 13 is shown in Figure 2.

[0080] Figure 2 shows a schematic representation of the displacement device 13 of the tool 1 from Figure 1.

[0081] Identical and functionally equivalent elements are provided with the same reference numerals in all figures, so reference is made to the previous description in each case. The tool body 3 is not shown here. The orientation of the displacement device 13 in Figure 2 corresponds to the same orientation as within the tool body 3 in Figure 1.

[0082] The displacement device 13 has a drive element 15, which is preferably designed as a push-pull rod and is displaceable along the central axis 5, and a displacement member 17 operatively connected to the cutting element carrier 7. In particular, each cutting element carrier 7 is assigned a displacement member 17, which is operatively connected to the associated cutting element carrier 7. As already explained above with regard to the cutting element carriers 7, the functioning of the tool 1 will be explained below only with regard to one displacement member 7, namely with regard to the displacement member 17 operatively connected to the first cutting element carrier 7.1. The displacement member 17 protrudes from the drive element 15 in a projection direction oriented parallel to the displacement direction (arrow A) and represented by a second arrow B.

[0083] The displacement member 17 has a first motion transmission element 19, which is spaced apart from the drive element 15 in the removal direction (arrow B) and hidden from the viewer. The first motion transmission element 19 is configured to convert a displacement of the drive element 15 along the central axis 5 into a displacement of the associated cutting element carrier 7 along the displacement direction (arrow A).

[0084] In a particularly preferred embodiment, the tool 1 has exactly one drive element 15.

[0085] A front view of the drive element 15 and the displacement members 17 is shown in a viewing direction along a third arrow C in Figure 4.

[0086] Figure 3 shows a schematic, enlarged view of a single displacement member 17 of the displacement device 13 from Figure 2

[0087] The displacement member 17 shown here is assigned to the first cutting element carrier 7.1 selected as an example from Figure 1, but has been rotated in the illustration, in particular rotated to the left around the vertical axis.

[0088] The first motion transmission element 19 of the displacement member 17 can also be seen.

[0089] Furthermore, the cutting element carrier 7 has a second motion transmission element 21. The first motion transmission element 19 is operatively connected to the second motion transmission element 21 and is configured to convert the displacement of the drive element 15 (not shown here) along the central axis 5 (not shown here)—cf. a cross E in Figure 4—together with the second motion transmission element 21 into the displacement of the cutting element carrier 7 along the displacement direction (arrow A).

[0090] The first motion transmission element 19 here has a first toothed surface element 23 (see Figure 4). The second motion transmission element 21 has a second toothed surface element 25. The first toothed surface element 23 and the second toothed surface element 25 cooperate to convert the displacement of the drive element 15 along the central axis 5 into the displacement of the cutting element carrier 7 along the displacement direction (arrow A). In particular, the first toothed surface element 23 and the second toothed surface element 25 mesh with each other.

[0091] At least one tooth surface 28 of a tooth surface element selected from the first tooth surface element 23 and the second tooth surface element 25 is oriented parallel to the displacement direction (arrow A).

[0092] Particularly preferably, both tooth surfaces of the first tooth surface element 23 and the second tooth surface element 25 are oriented parallel to the displacement direction.

[0093] Figure 4 shows a schematic representation of the front view of the drive element 15 and the displacement members 17 of the displacement device 13 from Figure 2.

[0094] The front view corresponds to a viewing direction along the third arrow C in Figure 2. The central axis 5 is represented by the cross E.

[0095] The drive element 15, six displacement elements 17 - of which only two are provided with a reference symbol for better clarity - and six first motion transmission elements 19 - of which only two are also provided with a reference symbol for better clarity - in the form of six first tooth surface elements 23 can be seen.

[0096] It is particularly clearly visible how the displacement member 17 protrudes from the drive element 15 in the projection direction (arrow B) oriented parallel to the displacement direction (arrow A). The drive element 15 here has six fastening recesses 29 arranged on an end face 27 of the drive element 15, preferably associated with the active end 9—only one of which is provided with a reference numeral for clarity. The displacement members 17 are each inserted into one of the fastening recesses 29 in a form-fitting manner.

[0097] Preferably, the first motion transmission element 19 has at least one imaginary point - here an imaginary outermost point F' - a first imaginary circle F with a circle diameter around the central axis that is larger than a circle diameter of a second imaginary circle G of an imaginary point G' that lies on the drive element 15, which of all possible imaginary points of the drive element 15 has the greatest distance from the central axis 5 along a radial direction represented by the dashed arrow J.

[0098] Preferably, the first motion transmission element 19 has, at a predominant number of imaginary points, for example at an imaginary point H', preferably in a predominant area, represented by a dimension line K, of a surface L oriented in the radial direction (arrow J) and extending into the image plane, a plurality of imaginary circles each having a circle diameter - represented, for example, in some areas, by a third imaginary circle H - which are larger than the circle diameter of the second imaginary circle G of the point G' lying on the drive element 15, which of all possible imaginary points of the drive element 15 along the radial direction has the greatest distance from the central axis 5.

[0099] Figure 5 shows a schematic representation of the tool 1 from Figure 1 with a drive element receiving space 31 and a displacement member receiving space 33.

[0100] The tool body 3 has the drive element receiving space 31 extending from a clamping end 35 of the tool body 3 along the central axis 5 in the direction of the active end 9 and, adjoining it in the region of the active end 9, the displacement member receiving space 33.

[0101] The tool body 3 has a first diameter W1 in the region of the drive element receiving space 31. The tool body 3 has a second diameter W2 in the region of the displacement member receiving space 33, which is different from the first diameter W1.

[0102] The second diameter W2 is larger than the first diameter Wl.

[0103] The drive element 15, which is arranged here within the drive element receiving space 31, is concealed from the viewer, and is designed in particular as a tension-compression element, has a coupling region 37 in the region of the clamping end 35. The coupling region 37 is designed to be displaced by a processing machine, in particular to be displaced relative to the tool body.

[0104] Preferably, the clamping end 35 is arranged along the central axis 5 opposite the active end 9.

[0105] Preferably, the clamping end 35 is configured to connect the tool 1 to the processing machine, in particular to be clamped in a working head or a spindle of the processing machine.

[0106] Preferably, the clamping end 35 has a clamping interface 39. Preferably, the clamping interface 39 is configured to connect the tool 1 to the processing machine, in particular to be clamped by the working head of the processing machine.

[0107] The clamping interface 39 is preferably designed as an HSK chuck.

Claims

CLAIMS 1. Tool (1) for machining a workpiece, comprising - a tool body (3) with a central axis (5), - at least one cutting element carrier (7) which is arranged at an effective end (9) of the tool body (3) along a displacement direction relative to the central axis (5) such that a machining diameter of the tool (1) is changed when the at least one cutting element carrier (7) is displaced along the displacement direction, wherein the cutting element carrier (7) has at least one cutting element (11) for machining the workpiece, and - a displacement device (13) arranged within the tool body (3), which has a drive element (15) displaceable along the central axis (5) and at least one displacement member (17) operatively connected to an associated cutting element carrier (7) of the at least one cutting element carrier (7), wherein the at least one displacement member (17) protrudes from the drive element (15) in a removal direction oriented parallel to the displacement direction and has a first movement transmission element (19) spaced apart from the drive element (15) in the removal direction, wherein the first movement transmission element (19) is designed to convert a displacement of the drive element (15) along the central axis (5) into a displacement of the cutting element carrier (7) associated with the displacement member (17) along the displacement direction.

2. Tool (1) according to claim 1, wherein the displacement direction is transverse or skewed, in particular perpendicular to the central axis (5).

3. Tool (1) according to one of the preceding claims, wherein - the at least one cutting element carrier (7) has a second movement transmission element (21), wherein - the first movement transmission element (19) of the associated displacement member (17) is operatively connected to the second movement transmission element (21) and is designed to - to convert the displacement of the drive element (15) along the central axis (5) together with the second movement transmission element (21) into the displacement of the cutting element carrier (7) along the displacement direction.

4. Tool (1) according to claim 3, wherein - the first movement transmission element (19) has a first tooth surface element (23) or is designed as a first tooth surface element (23), wherein - the second movement transmission element (21) has a second tooth surface element (25) or is designed as a second tooth surface element (25), wherein - the first tooth surface element (23) and the second tooth surface element (25) cooperate to convert the displacement of the drive element (15) along the central axis (5) into the displacement of the at least one cutting element carrier (7) along the displacement direction.

5. Tool (1) according to claim 4, wherein - at least one tooth surface (28) of a tooth surface element selected from the first tooth surface element (23) and the second tooth surface element (25) is oriented parallel to the displacement direction.

6. Tool (1) according to one of the preceding claims, wherein - the drive element (15) has a tension-compression element or is designed as a tension-compression element.

7. Tool (1) according to one of the preceding claims, wherein - the drive element (15) has at least one fastening recess (29) arranged on an end face (27) of the drive element (15), wherein the displacement member (17) is positively inserted into the fastening recess (29).

8. Tool (1) according to one of the preceding claims, wherein - the tool body (3) has a clamping end (35) extending from the tool body (3) along the central axis (5) in the direction of the effective end (9) extending drive element receiving space (31) and adjoining it in the region of the effective end (9) a displacement member receiving space (33), wherein - the tool body (3) has a first diameter (Wl) in the region of the drive element receiving space (31), wherein - the tool body (3) has a second diameter (W2) different from the first diameter (W1) in the region of the displacement member receiving space (33), wherein - the second diameter (W2) is larger than the first diameter (Wl).

9. Tool (1) according to one of the preceding claims, comprising - at least two cutting element carriers (7), wherein - the at least two cutting element carriers (7) are arranged distributed along a circumferential direction encompassing the central axis (5).

10. Tool (1) according to one of the preceding claims, wherein the tool (1) has at least four to a maximum of twelve, preferably at least five to a maximum of ten, preferably a maximum of eight, preferably exactly six cutting element carriers (7).

11. Tool (1) according to one of the preceding claims, wherein - the cutting element carrier (7) has a cutting element clamp holder (8), wherein - the cutting element clamp holder (8) is removably fastened to the cutting element carrier (7), wherein the cutting element clamp holder (8) is designed to fasten a cutting element (11).

Images