Cutter for machining workpieces

Abstract

The invention relates to a tool (1) for machining a workpiece, comprising: a tool body (3) having a central axis (5); at least one blade element holder (7) which is arranged on the active end (9) of the tool body (3) in a displaceable manner in a displacement direction relative to the central axis (5) in order to change the machining diameter of the tool (1) when the at least one blade element holder (7) is displaced in the displacement direction, the blade element holder (7) comprising at least one blade element (11) for machining a workpiece; and a displacement device (13), which is arranged in the knife body (3) and comprises a drive element (15), which can be displaced along the central axis (5), and at least one displacement member (17), which is operatively connected to an associated blade element holder (7) of the at least one blade element holder (7), the at least one displacement component (17) protrudes from the drive element (15) in a protruding direction parallel to the displacement direction and comprises a first movement transmission element (19) which is spaced apart from the drive element (15) in the displacement direction, the first movement transmission element (19) is configured to convert a displacement of the drive element (15) along the central axis (5) into a displacement of the blade element holder (7) associated with the displacement member (17) in a displacement direction.

Description

TECHNICAL FIELD

[0001] The present invention relates to a tool for machining a workpiece, in particular for machining an inner surface of an electric motor stator housing having an inner diameter. BACKGROUND

[0002] Such a tool, also referred to as a pilot tool, comprises a tool body having a central axis, at least one cutting element holder and a displacement device arranged within the tool body.

[0003] The cutting element holder is arranged in a displaceable manner relative to the central axis at an active end of the tool body in a displacement direction, such that a machining diameter of the tool is changed when the at least one cutting element holder is displaced in the displacement direction. Furthermore, the cutting element holder comprises at least one cutting element for machining the workpiece.

[0004] The displacement device comprises a drive element displaceable along the central axis. The drive element is in operative connection with the at least one cutting element holder and comprises 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 holder in the displacement direction.

[0005] The drive element typically comprises four flat surface sides around the central axis in the region of the active end. The drive element can be configured in the region as a cuboid or a cube. On the surface sides, the first motion transmission elements are arranged, which are typically configured as toothed surface elements. The first motion transmission elements are typically configured in one piece with the drive element. In contrast, at most four associated cutting element holders comprise a second motion transmission element.

[0006] The first motion transmission elements are in operative connection with the respective associated second motion transmission elements and are configured to convert a displacement of the drive element along the central axis in cooperation with the second motion transmission elements into a displacement of the associated cutting element holder in the displacement direction.

[0007] In this way, at most four cutting element holders can be displaced simultaneously, in particular temporally synchronously, in the displacement direction.

[0008] The displacement of the cutting element holder results in an increase or a decrease of the fly-cutting path diameter of the cutting elements arranged on the cutting element holder.

[0009] Based on the design of the tool, the respective surface side of the drive element and its associated first motion transmission element, in particular the associated toothed surface element, and the displacement direction of the cutting element holder associated with the first motion transmission element are not arranged within the same circumferential sector, but are offset by 90° around the central axis.

[0010] The reason for this is that the displacement direction and the toothed surface element which initiates the displacement must be arranged parallel, after all the displacement takes place in a plane parallel to the plane of the toothed surface element.

[0011] This design requires a 90° offset and a 360° full turn maximum degree, so at most only four blade element holders can be arranged and displaced.

[0012] In particular when machining thin-walled components, in particular stator shells, machining with four blade element holders performs poorly in terms of surface quality, dimensional accuracy and form and position tolerances.

[0013] Furthermore, it has turned out that replacing the tooth surface elements when the predetermined wear limit is exceeded involves a high material outlay and is cost-intensive. The tooth surface elements are usually configured in one piece with the drive element, so that the entire tool has to be completely disassembled in order to replace the tooth surface elements. In particular, even if only one of the four tooth surface elements is worn, the entire drive element has to be replaced.

[0014] Due to the angular offset between the displacement direction of each table side and the associated blade element holder of the table side, the blade element holder has to be extended towards the associated tooth surface element in order to displace the blade element holder in the displacement direction, which leads to an increased structural space and material outlay. This disadvantageously increases the tool rotational inertia, which limits the maximum machining rotational speed. SUMMARY

[0015] In view of the above, it is an object of the present application to propose a tool for cutting machining of a workpiece, which allows to reduce the above-mentioned disadvantages, preferably to avoid these disadvantages.

[0016] The above-mentioned technical problems are solved by the technical solution of the present application, in particular the independent claim and the dependent claims as well as the preferred embodiments in the description.

[0017] In order to achieve the above object, in particular, a tool for machining a workpiece, in particular an inner surface of a motor stator housing having an inner diameter, is provided. The tool comprises a tool body having a central axis, in particular a partially cylindrical guide body. The tool body extends in particular along the central axis. The tool further comprises at least one cutting element holder which is arranged in a displaceable manner relative to the central axis, in particular towards the central axis or away from the central axis, in a displacement direction at an active end of the tool body, such that a machining diameter of the tool changes when the at least one cutting element holder is displaced in the displacement direction. The cutting element holder comprises at least one cutting element for machining the workpiece. The tool further comprises a displacement device which is arranged in the tool body. The displacement device comprises a drive element which is displaceable along the central axis and at least one displacement member which is in operative connection with the respective cutting element holder of the at least one cutting element holder which is associated with the displacement member. The at least one displacement member projects in a projection direction parallel to the displacement direction from the drive element. The at least one displacement member comprises a first movement transmission element which is spaced apart from the drive element in the projection direction and which is 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 the cutting element holder in the displacement direction, the cutting element holder being associated with the displacement member which is itself associated with the respective first movement element.

[0018] Due to the mutual spacing of the first movement transmission element and the drive element, in particular the displacement thereof away from the central axis, it is advantageously possible to provide more than four cutting element holders, the machining diameter being changed by displacing, in particular simultaneously displacing, in particular temporally synchronously displacing, these cutting element holders.

[0019] In particular, the displacement direction of the first movement transmission element and the cutting element holder associated therewith, in particular the cutting element holder itself, is advantageously arranged in the same circumferential sector. A circumferential spacing of the cutting element holders by 90° angles around the central axis in the direction of the fly-cutting trajectory is advantageously avoided from a structural design point of view. The cutting element holders no longer need to occupy a large amount of space and material extension to the associated tooth surface element, but rather the first movement transmission element is displaced towards the cutting element holder by a relatively space-saving projection displacement element.

[0020] Advantageously, the first movement transmission element can be replaced independently of the drive element when the first movement transmission element has exceeded a predetermined wear limit. In this way, only those first movement transmission elements can be replaced which have actually exceeded the predetermined wear limit. Optionally, other first movement transmission elements which have not exceeded the wear limit, in particular have not yet exceeded the wear limit, can continue to be used. Advantageously, the entire drive element does not need to be replaced, so that the maintenance effort and the maintenance costs are reduced.

[0021] By displacing the first motion transmission element in the structure, the rotational inertia of the tool can be reduced, which can advantageously increase the maximum machining rotational speed.

[0022] Within the context of the present disclosure, the displacement member projects from the drive element in a projection direction parallel to the displacement direction, in particular in 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 of an imaginary point on the drive element, which has the largest distance from the central axis among all possible imaginary points of the drive element in the radial direction.

[0023] In particular, the drive element extends in the radial direction from the central axis to a radially outermost point of the drive element. In particular, the 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 has a larger distance from the central axis than the radially outermost point of the drive element.

[0024] In particular, the tool body comprises a clamping end opposite the active end.

[0025] The active end is in particular an end of the tool body facing the workpiece to be machined. The clamping end is in particular an end of the tool body facing away from the workpiece to be machined and opposite the active end along the central axis. In a design variant, the clamping end is configured to be connected to a machining machine, for example a machining center, in particular a machine spindle or an adapter. In particular, the clamping end comprises a clamping interface. In particular, the clamping interface is configured to connect the tool to the machining machine, in particular to be clamped by a working head or a spindle of the machining machine.

[0026] In particular, the clamping interface is selected from the group consisting of: an HSK chuck and a flange chuck, in particular a modular chuck, in particular a modular flange.

[0027] In particular, the flange chuck comprises a centering element and a plurality of fastening holes.

[0028] In particular, the drive element comprises a coupling region in the region of the clamping end, which is configured to cooperate with the machining machine in order to displace the drive element along the central axis.

[0029] In a design variant, the tool edge element holder comprises exactly one tool edge element for machining the workpiece.

[0030] In a design variant, the displacement member comprises exactly one first motion transmission element.

[0031] In a design variant, the tool edge element holder is in particular configured and designed to hold an indexable insert as a tool edge element for machining the workpiece.

[0032] Within the context of the present disclosure, the axial direction refers to the direction along the center axis, the radial direction is perpendicular to the axial direction and thus to the center axis, and the circumferential direction concentrically surrounds the center axis and thus the axial direction.

[0033] In particular, the tool for machining the inner diameter is displaced in the axial direction with a feed speed. By means of the displaceable blade element holder, the feed can be adjusted, in particular the inner diameter of the workpiece to be machined. In particular, the tool is rotated about the center axis for machining the workpiece. Alternatively, the workpiece can also be rotated about the center axis, in which case the tool remains stationary. It is also conceivable that both the tool and the workpiece are rotated, in particular counter-rotated.

[0034] According to an improvement of the present disclosure, the displacement direction is transverse or oblique, in particular perpendicular, to the center axis. In particular, by this arrangement the introduction of the tool and the supported machining forces, in particular the radial machining forces, can be significantly improved. Furthermore, a particularly precise displacement of the at least one blade element holder can be achieved.

[0035] The protrusion direction is parallel to the displacement direction, so that the protrusion direction is also transverse or oblique, in particular perpendicular, to the center axis. In particular, both the displacement direction and the protrusion direction, i.e. these two directions, are transverse or oblique, in particular perpendicular, to the center axis.

[0036] In a design variant, the displacement direction is oriented oblique, in particular so that the displacement direction is parallel to a direction perpendicular to the center axis.

[0037] In a design variant, the protrusion direction is oriented oblique, in particular so that the displacement direction is parallel to a direction perpendicular to the center axis.

[0038] According to an improvement of the present disclosure, the at least one blade element holder comprises a second movement transmission element. The first movement transmission element of the associated displacement member is in operative connection with the second movement transmission element and is configured to convert the displacement of the drive element along the center axis into a displacement of the blade element holder along the displacement direction in cooperation with the second movement transmission element.

[0039] In particular, the first movement transmission element is in one-piece construction with the displacement member or in multiple-piece construction with the displacement member.

[0040] In particular, the second movement transmission element is in multiple-piece construction with the blade element holder, in particular fastened to the blade element holder in a releasable manner.

[0041] Advantageously, the second motion transmission element can be replaced independently of the associated blade element holder when the second motion transmission element exceeds its predefined wear limit. This makes it possible to replace only those second motion transmission elements which have actually exceeded the predefined wear limit. Optionally, other second motion transmission elements which have not exceeded the wear limit, in particular which have not yet exceeded the wear limit, can continue to be used, thereby reducing the maintenance effort and reducing the maintenance costs.

[0042] In one design variant, the blade element holder comprises exactly one second motion transmission element.

[0043] According to an improvement of the application, the first motion transmission element comprises or is configured as a first toothed element. The second motion transmission element comprises or is configured as a second toothed element. The first toothed element cooperates with the second toothed element to convert a displacement of the drive element along the central axis into a displacement of the associated blade element holder in the displacement direction.

[0044] In particular, the first toothed element is configured in one piece with the first motion transmission element or in multiple pieces with the first motion transmission element.

[0045] In particular, the second toothed element is configured in one piece with the second motion transmission element or in multiple pieces with the second motion transmission element.

[0046] In one design variant, the first motion transmission element comprises exactly one first toothed element.

[0047] In one design variant, the second motion transmission element comprises exactly one second toothed element.

[0048] In one design variant, the first motion transmission element comprises exactly one first toothed element and the second motion transmission element comprises exactly one second toothed element.

[0049] By virtue of the multiple-piece design of the toothed element selected from the first toothed element and the second toothed element and the associated motion transmission element, the toothed element can advantageously be replaced individually when the toothed element exceeds its predefined wear limit. This further reduces the maintenance costs, in particular the costs of spare parts. In particular, the associated displacement element does not need to be replaced.

[0050] According to an improvement of the application, at least one toothed surface of the toothed element selected from the first toothed element and the second toothed element is parallel to the displacement direction. This means in particular that the normal vector of the toothed surface is perpendicular to the displacement direction. This orientation advantageously further optimizes the force introduction into the tool. Furthermore, the tool is relatively more lightweight and compact.

[0051] In particular, at least one tooth flank of the tooth flank element selected from the first tooth flank element and the second tooth flank element is oriented transversely or obliquely, in particular perpendicularly, to the center axis. In particular, a normal vector of the tooth flank is perpendicular to the center axis. In particular, a normal vector of the tooth flank is perpendicular to both the center axis and the displacement direction.

[0052] In particular, both tooth flanks of the first tooth flank element and the second tooth flank element are parallel to the displacement direction.

[0053] According to an improvement of the application, the drive element comprises or is configured as a push-pull element. In particular, the push-pull element advantageously enables an increase or decrease of the machining diameter of the tool, in particular of the fly-cutting trajectory diameter.

[0054] In particular, the push-pull element comprises or is configured as a push-pull rod, in particular extending along the center axis.

[0055] In particular, the push-pull element comprises a coupling region in the clamping end region.

[0056] According to an improvement of the application, the drive element comprises at least one fastening recess arranged at an end face of the drive element, in particular the end face associated with the action end. The at least one displacement member is inserted in a form-fitting manner, in particular locally, in particular in an insertion region, into the associated at least one fastening recess. In this way, the displacement element can advantageously be replaced individually, independently of the drive element, for example in the event of a defect or if the displacement element exceeds a predetermined wear limit.

[0057] The fastening recess in particular comprises or is configured as a groove or a mouth.

[0058] The at least one displacement member is in particular inserted into the associated fastening recess on the end side or from the opposite side of the end side.

[0059] In particular, the at least one displacement member hooks into, in particular radially hooks into, in particular form-fitting radially hooks into, the associated fastening recess.

[0060] Alternatively or additionally, the at least one displacement member is fastened to the drive element, in particular is crimped, swaged and / or pinned to the drive element.

[0061] According to an improvement of the application, the tool body comprises a drive element accommodation cavity extending from the clamping end of the tool body in the direction of the center axis towards the active end, and in turn a displacement member accommodation cavity in the action end region. The tool body has a first diameter in the region of the drive element accommodation cavity. The tool body has a second diameter different from the first diameter in the region of the displacement member accommodation cavity. The second diameter is greater than the first diameter. The different diameters advantageously reduce the rotational inertia of the tool.

[0062] According to an embodiment of the application, the tool comprises at least two blade element holders. The at least two blade element holders are arranged in a circumferential direction around the central axis, in particular spaced apart from each other. In this way, it is possible to reduce the machining forces introduced in the radial direction of the central axis.

[0063] According to an embodiment of the application, the tool comprises at least four to at most eight, preferably at least five to at most seven, preferably exactly six blade element holders. The technical advantages described above are particularly pronounced in the case of this number of blade element holders.

[0064] In one embodiment, the tool comprises a drive element and six displacement members.

[0065] In one embodiment, the tool comprises exactly one drive element.

[0066] According to an embodiment of the application, the blade element holder comprises a blade element holder. The blade element holder is detachable, in particular replaceable, and fastened to the blade element holder. The blade element holder is configured to secure, in particular to clamp, a blade element, in particular an indexable insert. BRIEF DESCRIPTION OF DRAWINGS

[0067] The application will be described in more detail below with reference to the drawings. In the drawings:

[0068] Figure 1 A schematic representation of a cutting tool embodiment is shown;

[0069] Figure 2 A schematic representation of Figure 1 A schematic representation of the displacement device of the tool shown;

[0070] Figure 3 A schematic representation of Figure 2 An enlarged schematic representation of the individual displacement members of the displacement device shown;

[0071] Figure 4 A schematic representation of Figure 2 A front view schematic representation of the drive element and the displacement members of the displacement device shown;

[0072] Figure 5 A schematic representation of Figure 1 A schematic representation of the drive element accommodation and the displacement member accommodation of the tool shown. DETAILED DESCRIPTION

[0073] Figure 1 A schematic representation of a tool 1 embodiment for cutting a workpiece, in particular the inner surface of an electric motor stator housing, is shown.

[0074] The tool 1 comprises a tool body 3 with a central axis 5, preferably a partly cylindrical tool body 3. Preferably, the tool body 3 extends along the central axis 5.

[0075] The tool 1 further comprises at least one, in this case six, cutting edge element holder 7. For the sake of simplicity, the following is explained with one of the six cutting edge element holders 7, namely the first cutting edge element holder 7.1, it being understood that the following also applies to the other cutting edge element holders 7.

[0076] The cutting edge element holder 7 is arranged in a displaceable manner at an active end 9 of the tool body 3 relative to the central axis 5, preferably towards the central axis 5 or away from the central axis 5, in a displacement direction (indicated by the first arrow A), such that the machining diameter of the tool 1, in this case schematically indicated by the dashed flying tool trajectory D, changes when the at least one cutting edge element holder 7 is displaced in the displacement direction (arrow A).

[0077] Preferably, the displacement direction (arrow A) is transverse or oblique, particularly preferably perpendicular, to the central axis 5, i.e. oriented in a radial direction.

[0078] The cutting edge element holder 7 comprises at least one cutting edge element 11, in this case an indexable insert, for machining a workpiece.

[0079] Preferably, the cutting edge element holder 7 comprises a cutting edge element holder 8. The cutting edge element holder 8 is detachably, in particular replaceably, fastened to the cutting edge element holder 7. The cutting edge element holder 8 is configured to fasten, in particular clamp, the cutting edge element 11, in particular the indexable insert.

[0080] Preferably, the six cutting edge element holders 7 are arranged spaced apart from one another in a circumferential direction around the central axis 5, in particular indicated by the flying tool trajectory D, preferably in the same plane perpendicular to the central axis.

[0081] In one design, the tool 1 comprises at least four to at most twelve, preferably at least five to at most ten, preferably at most eight, preferably exactly six, cutting edge element holders 7.

[0082] The tool 1 further comprises a displacement device 13 arranged in the tool body 3, in this case hidden from the viewer.

[0083] The displacement device 13 is described in more detail below. Figure 2 .

[0084] Figure 2 A schematic view of the displacement device 13 of the tool 1 shown is shown. Figure 1

[0085] In the figures, identical elements having the same function are provided with the same reference signs, so that their description can be referred to above.​

[0086] The tool body 3 is not shown in this figure. Figure 2 The orientation of the shown displacement device 13 corresponds to Figure 1 The orientation within the shown tool body 3.

[0087] The displacement device 13 comprises a drive element 15 displaceable along the central axis 5 and preferably configured as a push-pull rod, and a displacement member 17 in operative connection with the blade element holder 7. In particular, each blade element holder 7 is associated with a respective displacement member 17, which is in operative connection with the associated blade element holder 7. As described above for the blade element holder 7, the functionality of the tool 1 is explained below only for one displacement member 7, i.e. for the displacement member 17 in operative connection with the first blade element holder 7.1. The displacement member 17 projects in a projection direction (indicated by the second arrow B) parallel to the displacement direction (arrow A) from the drive element 15.

[0088] The displacement member 17 comprises a first movement transmission element 19 (hidden from the observer) spaced apart from the drive element 15 in the projection direction (arrow B). The first movement 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 blade element holder 7 along the displacement direction (arrow A).

[0089] In a particularly preferred embodiment, the tool 1 comprises exactly one drive element 15.

[0090] Figure 4 A front view of the drive element 15 and the displacement member 17 is shown in the third arrow C viewing direction.

[0091] Figure 3 An enlarged view of Figure 2 The enlarged view of the respective displacement member 17 of the shown displacement device 13.

[0092] The displacement member 17 shown in this figure is associated with Figure 1 The first blade element holder 7.1 is exemplarily selected in this figure, but the figure has been rotated, in particular to the left around a vertical axis.

[0093] The first movement transmission element 19 of the displacement member 17 can also be seen in the figure. The blade element holder 7 also comprises a second movement transmission element 21.

[0094] The first movement transmission element 19 is in operative connection with the second movement transmission element 21 and is configured to convert a displacement of the drive element 15 (not shown in this figure) along the central axis 5 (not shown in this figure) in cooperation with the second movement transmission element 21 into a displacement of the blade element holder 7 along the displacement direction (arrow A). Figure 4 The displacement of the drive element 15 along the central axis 5 is indicated in this figure by the cross E.

[0095] Here, the first motion transmission element 19 comprises a first toothed element 23 (see Figure 4 ). The second motion transmission element 21 comprises a second toothed element 25. The first toothed element 23 cooperates with the second toothed element 25 to convert a displacement of the drive element 15 along the central axis 5 into a displacement of the blade element holder 7 along the displacement direction (arrow A). In particular, the first toothed element 23 meshes with the second toothed element 25.

[0096] At least one toothed surface 28 of the toothed elements selected from the first toothed element 23 and the second toothed element 25 is parallel to the displacement direction (arrow A).

[0097] It is particularly preferred that both toothed surfaces of the first toothed element 23 and the second toothed element 25 are parallel to the displacement direction.

[0098] Figure 4 A schematic front view of the drive element 15 and the displacement members 17 of the displacement device 13 is shown. Figure 2 The front view corresponds to a viewing direction along the third arrow C.

[0099] The front view corresponds to a viewing direction along the third arrow C. Figure 2 The central axis 5 is indicated by a cross E.

[0100] It can be seen in the figure that the drive element 15, the six displacement members 17 (of which only two are labeled with reference numerals for the sake of clarity) and the six first motion transmission elements 19 in the form of the six first toothed elements 23 (of which likewise only two are labeled with reference numerals for the sake of clarity) are present.

[0101] It can be seen in particular clearly in the figure that the displacement members 17 project from the drive element 15 in a projection direction (arrow B) which is parallel to the displacement direction (arrow A).

[0102] Here, the drive element 15 comprises six fastening recesses 29, of which only one is labeled with a reference numeral for the sake of clarity, which are arranged at an end face 27 of the drive element 15, preferably the end face associated with the action end 9. The displacement members 17 each engage in a form-fitting manner in one of the fastening recesses 29.

[0103] It is preferred that the first motion transmission element 19 comprises at least one imaginary point, here the outermost imaginary point F', namely a first imaginary circle F, which has a larger circle diameter about the central axis than a second imaginary circle G of an imaginary point G' on the drive element 15, of all possible imaginary points of the drive element 15 in the radial direction (indicated by a dashed arrow J), which imaginary point G' has the largest distance from the central axis 5.

[0104] Preferably, the first motion transmission element 19 comprises, in a main region of the surface L entering the drawing plane in a radial direction (arrow J), preferably indicated by the dashed line K, a plurality of imaginary circles each having a circle diameter, for example locally represented by a third imaginary circle H, the circle diameter of which is greater than the circle diameter of a second imaginary circle G located at an imaginary point G' on the drive element 15, the distance of which from the central axis 5 is greatest among all possible imaginary points of the drive element 15 in the radial direction.

[0105] Figure 5 It is shown Figure 1 a schematic view of the tool 1 with its drive element accommodation cavity 31 and displacement member accommodation cavity 33.

[0106] The tool body 3 comprises a drive element accommodation cavity 31 extending from a clamping end 35 of the tool body 3 in the direction of the central axis 5 towards the active end 9 and, consequently, a displacement element accommodation cavity 33 in the region of the active end 9.

[0107] The tool body 3 has a first diameter W1 in the region of the drive element accommodation cavity 31.

[0108] The tool body 3 has a second diameter W2 in the region of the displacement member accommodation cavity 33, which is different from the first diameter W1.

[0109] The second diameter W2 is greater than the first diameter W1.

[0110] The drive element 15, which is arranged in the drive element accommodation cavity 31 and is configured as a push-pull element, in particular, in the region of the clamping end 35 comprises a coupling region 37, which is hidden from the viewer here. The coupling region 37 is configured to be displaceable, in particular with respect to the tool body, by the machining tool.

[0111] Preferably, the clamping end 35 is opposite the active end 9 along the central axis 5.

[0112] Preferably, the clamping end 35 is configured to connect the tool 1 to the machining tool, in particular to be clamped in a work head or a spindle of the machining tool.

[0113] Preferably, the clamping end 35 comprises a clamping interface 39. Preferably, the clamping interface 39 is configured to connect the tool 1 to the machining tool, in particular to be clamped by a work head of the machining tool.

[0114] The clamping interface 39 is preferably configured as an HSK chuck.

Claims

1. A tool (1) for cutting machining of a workpiece, comprising: a tool body (3) with a central axis (5); at least one cutting element holder (7) arranged in a displaceable manner at an active end (9) of the tool body (3) with respect to the central axis (5) in a displacement direction, such that a machining diameter of the tool (1) changes when the at least one cutting element holder (7) is displaced in the displacement direction, wherein the cutting element holder (7) comprises at least one cutting element (11) for machining of a workpiece; and a displacement device (13) arranged in the tool body (3) and comprising a drive element (15) displaceable along the central axis (5) and at least one displacement member (17) which is in operative connection with an associated one of the at least one cutting element holder (7), wherein the at least one displacement member (17) projects from the drive element (15) in a projection direction parallel to the displacement direction and comprises a first movement transmission element (19) spaced apart from the drive element (15) in the displacement direction, wherein the first movement 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 holder (7) of the at least one displacement member (17) in the displacement direction.

2. The tool (1) according to claim 1, wherein The displacement direction is oriented transversely or obliquely, in particular perpendicularly, to the central axis (5).

3. The tool (1) according to any one of the preceding claims, wherein the at least one cutting element holder (7) comprises a second movement transmission element (21), wherein the first movement transmission element (19) of the associated displacement member (17) is in operative connection with the second movement transmission element (21) and is configured to: convert the displacement of the drive element (15) along the central axis (5) into a displacement of the cutting element holder (7) in the displacement direction in cooperation with the second movement transmission element (21).

4. The tool (1) according to claim 3, wherein the first movement transmission element (19) comprises or is configured as a first toothed surface element (23), wherein the second movement transmission element (21) comprises or is configured as a second toothed surface element (25), wherein the first toothed surface element (23) cooperates with the second toothed surface element (25) to convert the displacement of the drive element (15) along the central axis (5) into a displacement of the at least one cutting element holder (7) in the displacement direction.

5. The tool (1) according to claim 4, wherein at least one toothing (28) of the toothed surface elements selected from the first toothed surface element (23) and the second toothed surface element (25) is parallel to the displacement direction.

6. The tool (1) according to any one of the preceding claims, wherein the drive element (15) comprises or is configured as a push-pull element.

7. The tool (1) according to any one of the preceding claims, wherein The drive element (15) comprises at least one fastening recess (29) arranged at an end face (27) of the drive element (15), wherein The displacement member (17) is form-fittingly embedded in the fastening recess (29).

8. The tool (1) according to any one of the preceding claims, wherein The tool body (3) comprises a drive element accommodation cavity (31) extending from a clamping end (35) of the tool body (3) in the direction of the central axis (5) towards the action end (9) and comprises in the region of the action end (9) a displacement member accommodation cavity (33) in conjunction therewith, wherein The tool body (3) has a first diameter (W1) in the region of the drive element accommodation cavity (31), wherein The tool body (3) has a second diameter (W2) in the region of the displacement member accommodation cavity (33), which second diameter (W2) is different from the first diameter (W1), wherein The second diameter (W2) is greater than the first diameter (W1).

9. The tool (1) according to any one of the preceding claims, comprising at least two blade element holders (7), wherein The at least two blade element holders (7) are arranged distributed in a circumferential direction around the central axis (5).

10. The tool (1) according to any one of the preceding claims, wherein The tool (1) comprises at least four to at most twelve, preferably at least five to at most ten, preferably at most eight, preferably exactly six blade element holders (7).

11. The tool (1) according to any one of the preceding claims, wherein The blade element holder (7) comprises a blade element clamp (8), wherein The blade element clamp (8) is detachably fastened to the blade element holder (7), wherein The blade element clamp (8) is configured to fasten a blade element (11).

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