Cutting insert for a milling cutter as well as milling cutter

Abstract

Cutting insert (20) for a milling cutter (10), comprising a first main surface (22) for bearing against a stop surface (24) of the milling cutter (10) oriented substantially perpendicular to the direction of rotation, a second main surface (26) opposite the first main surface (22) which has the rake surface, and a cylindrical surface (28) which connects the first main surface (22) with the second main surface (26) and has the clearance surface, wherein the cylindrical surface (28) is formed by several side surfaces (30 - 36), characterized in that each side surface (30 - 36) has two clamping sections (38) at opposite ends, wherein the surface of the side surface (30 - 36) is H-shaped in plan view.

Description

[0001] The invention relates to a cutting insert for a milling cutter and a milling cutter.

[0002] Cutting inserts for milling cutters are known from the prior art. These inserts are clamped in the cutter body by means of a clamping element, for example, a screw. The clamping element is associated with one of the main surfaces of the cutting insert, i.e., a relatively large surface of the cutting insert, in order to fix the cutting insert to the cutter body. If the clamping element is a screw, it typically extends through a hole in the cutting insert that passes through both main surfaces of the cutting insert. Such a design is known in Fig. 6 shown.

[0003] The milling cutter 100, known from the prior art, has, for example, a cylindrical tool body 102 which rotates about a rotary axis A during operation of the milling cutter 100. The tool body 102 has a recess 104 into which a cutting insert 106 is inserted. The cutting insert 106 rests directly against the tool body 102 via a first main surface, which is oriented perpendicular to the direction of rotation. A screw 108 is inserted via a second main surface 110, opposite the first main surface, to clamp the cutting insert 106. The screw 108 is guided through a hole 112 in the cutting insert 106, which forms the clamping section of the cutting insert 106. The hole 112 is usually provided in the center of the second main surface 110 in order to clamp the cutting insert 106 as evenly as possible and to be able to rotate or turn it if it is a reversible cutting insert.

[0004] The screw 108 extends essentially perpendicular to the axis of rotation A of the milling cutter 100 and to an active cutting edge 114 of the cutting insert 106, over which a workpiece is machined with the milling cutter 100.

[0005] Other designs are also known in which the screw or clamping element does not run exactly perpendicularly through the cutting insert, but at an angle, so that the clamping element exerts a force on the cutting insert during clamping that has at least two force components in different directions. However, even in these designs, the clamping element runs essentially perpendicular to the axis of rotation of the milling cutter and to the active cutting edge of the cutting insert.

[0006] Due to this arrangement of the clamping element, it can happen that the clamping element loosens during operation of the milling cutter, meaning that the cutting insert is no longer sufficiently fixed in the milling cutter.

[0007] Furthermore, cutting inserts for milling cutters are known from US 2010 / 0 124 465 A, DE 103 61 450 A1, WO 2011 / 126 231 A2 and DE 10 2010 063 611 A1.

[0008] The object of the invention is therefore to provide an alternative way to permanently and securely fix a cutting insert to the tool body.

[0009] The problem is solved according to the invention by a cutting insert for a milling cutter, comprising a first main surface for bearing against a stop surface of the milling cutter oriented substantially perpendicular to the direction of rotation, a second main surface opposite the first main surface, which has the rake face, and a cylindrical surface that connects the first main surface with the second main surface and has the clearance face. The cylindrical surface is formed by several side surfaces. Each side surface has two clamping sections at opposite ends, with the surface of the side surface being H-shaped in plan view. This ensures that the cutting insert can be used as an indexable insert, since the side surfaces are each symmetrically designed, allowing the cutting insert to be rotated 180° around the center point of the respective side surface.

[0010] The basic idea of ​​the invention is to clamp the cutting insert via its cylindrical surface, thereby realizing a completely new clamping method. The forces transmitted from the cutting insert via its clamping section to the clamping element during milling operation thus have a different direction relative to the clamping element. This arrangement minimizes the risk of the clamping element, and consequently the cutting insert, becoming loose during milling operation. Furthermore, it reduces the risk of the clamping element deforming during operation or of unavoidable deviations in clamping or the quality of the clamping element affecting the milling performance.

[0011] In particular, the cutting insert is a reversible cutting insert.

[0012] One aspect stipulates that the side surfaces merge seamlessly, particularly with the cylindrical surface being formed by four side surfaces arranged at right angles to each other. The cylindrical surface is therefore essentially continuous, since the side surfaces merge into one another. The surface of the cutting insert is essentially formed by the two main surfaces and the cylindrical surface, which consists of the side surfaces. Edges may be present at the transitions between the side surfaces if the cutting insert is, for example, cuboid in shape. In the case of a disc-shaped cutting insert, the cylindrical surface would be correspondingly cylindrical. Typically, at least the first main surface has the largest area of ​​the various outer surfaces of the cutting insert, since the cutting insert rests against the tool body via this first main surface and is supported by it.

[0013] In particular, at least one clamping section is provided in an eccentric region of the cylindrical surface, i.e., not centrally on one of the side faces. Since the clamping section is no longer located in the region of the main surface, but rather in the cylindrical surface, it can be positioned eccentrically, resulting in a different force distribution during operation, especially a different force distribution acting on the clamping element.

[0014] According to one embodiment, the at least one clamping section is designed as a groove-like recess in the surface of the cylindrical surface. The clamping section is therefore not a through hole through which the clamping element extends. The groove-like recess ensures a positive fit between the clamping section and the clamping element in at least two directions. Furthermore, the clamping element can be received in the recess in such a way that it does not protrude beyond the surface of the cylindrical surface, thus protecting the clamping element from external influences. The surface of the cutting insert therefore forms the outermost area.

[0015] In particular, the indentation lies between the legs of the "H".

[0016] The cutting insert, for example, is cuboid in shape.

[0017] If the cutting insert itself is also symmetrical, it can additionally be rotated or turned around its own axis, thus providing even more cutting edges.

[0018] Another aspect is that the clamping sections of adjacent side surfaces merge seamlessly. This simplifies the manufacturing of the cutting insert, as the two interlocking clamping sections can be formed in a single manufacturing step.

[0019] The clamping section can also have a single, inclined contact surface for the clamping element, wherein the contact surface is inclined obliquely towards the second main surface, in particular where the contact surface forms the bottom surface of the recess. Due to the single, inclined contact surface, the clamping element can exert a clamping force on the cutting insert that comprises two force components, i.e., acts in two different directions. The cutting insert can thus be pressed into a corner of a recess in the tool body, thereby simplifying its positioning and fixation.

[0020] The problem is also solved by a milling cutter with a tool body rotatable about a rotary axis, to which at least one cutting insert of the aforementioned type is detachably attached in a recess of the tool body, wherein the cutting insert is subjected to force by at least one, in particular separate, arm-shaped, clamping element in the tool body, which engages the clamping section. The clamping element is designed separately from the cutting insert. It can also be designed separately from the tool body or as part of the tool body. The clamping element engages a side surface of the cutting insert, thereby clamping the cutting insert in the recess of the tool body via one of its side surfaces.

[0021] One aspect stipulates that the recess in the tool body has a circumferentially oriented stop surface against which the cutting insert rests with its first main surface, in particular where the stop surface is essentially perpendicular to the direction of rotation. During operation of the milling cutter, the cutting insert is supported against the stop surface of the tool body to transfer the forces generated during operation to the tool body. Accordingly, the first main surface and its associated stop surface of the tool body are designed to be as large as possible in order to absorb the forces evenly.

[0022] One aspect stipulates that at least one clamping element is attached to the tool body via a screw, and is specifically pre-tensioned. The screw allows adjustment of the force with which the clamping element holds the cutting insert. Accordingly, the cutting insert can be clamped with a defined and variable force.

[0023] Alternatively or additionally, a spring is provided, which can also be used to adjust the preload of the clamping element.

[0024] One embodiment provides that a receiving pocket for the clamping element is formed in the tool body, with a ramp-shaped contour for the at least one clamping element along which the clamping element extends, in particular wherein the bottom surface of the receiving pocket is additionally tilted obliquely in the longitudinal direction of the bottom surface relative to a radial or axial plane of the tool body. The receiving pocket is thus set back from the outer surface of the tool body, which ensures that the clamping element does not come into contact with the workpiece during operation. The clamping element therefore cannot be damaged during operation. Due to the ramp-shaped contour, the clamping element can be at least partially supported by the tool body. The ramp-shaped contour and its orientation relative to the radial or axial plane of the tool body provide additional safety features.In the axial plane, it is ensured that the clamping element exerts a force on the cutting insert, so that it is pressed axially towards the tool body or radially inwards towards the tool body.

[0025] In particular, the clamping element has an elongated shape and a wedge-shaped cross-section at its end. This wedge-shaped cross-section allows the clamping element to interact with the clamping section, creating a single, inclined clamping surface that rests against the mounting surface. The wedge-shaped cross-section at the end of the clamping element ensures that, when the cutting insert is clamped, the clamping element applies a force with two components. The clamping surface is oriented such that these two force components act on the cutting insert in a way that presses it into the recess.

[0026] The clamping surface can be designed to be complementary to the contact surface of the clamping section, and in particular, flat. This ensures that the clamping element exerts pressure on the cutting insert over the largest possible area, resulting in a uniform force being applied to the cutting insert.

[0027] One aspect of the design involves the clamping element pressing the cutting insert axially against a first seating surface of the tool body or radially inwards against a second seating surface of the tool body. Depending on the orientation and arrangement of the clamping element, the cutting insert can thus be pressed against either a first or second seating surface by the clamping element, in addition to the stop surface. The cutting insert is thereby firmly clamped in the recess. The two seating surfaces and the stop surface define the recess in the tool body. The clamping element thus presses the cutting insert into a corner of the recess, thereby supporting it on two surfaces simultaneously: the stop surface and either the first or second seating surface.

[0028] The clamping surface is therefore located opposite a corner of the recess, which is formed by the two corresponding surfaces of the tool body.

[0029] According to one embodiment, a retaining element is provided in the first and / or second seating surface by which the cutting insert is at least partially held, in particular a retaining element having a snap-fit ​​connection. The cutting insert can thus be fixed in the recess of the tool body by a retaining element in addition to the clamping element to ensure a secure arrangement of the cutting insert, especially during operation of the milling cutter. The clamping element can thus press the cutting insert against the stop surface and the first or second seating surface, with a retaining element on the second or first seating surface correspondingly ensuring the fixing of the cutting insert on the other seating surface, against which the cutting insert is not pressed by the clamping element.

[0030] Another embodiment provides two, in particular separate, arm-shaped clamping elements that clamp the cutting insert, in particular wherein the two clamping elements are arranged on the tool body at a substantially 90° angle to each other, and in particular engage adjacent side surfaces. This ensures a more uniform application of pressure to the cutting insert during clamping, so that it is clamped into the recess as homogeneously as possible, in particular in two different corners of the recess, so that a positive fit is achieved in three directions. The cutting insert is thus pressed against all boundary surfaces of the recess by the clamping elements.

[0031] In general, the holding device can also be provided in addition to the clamping element to enable redundant fixing of the cutting insert or to provide additional safety. The holding device can therefore be located on the seat surface against which the clamping element presses the cutting insert.

[0032] Further advantages and features of the invention will become apparent from the following description and the drawings, to which reference is made. The drawings show: - Fig. 1 a perspective view of a milling cutter according to the invention with a clamped cutting insert according to the invention, - Fig. 2 A view from below of the milling cutter with the cutting insert clamped according to Fig. 1, - Fig. 3. A first side view of the milling cutter with the cutting insert clamped according to the Fig. 1 and Fig. 2, - Fig. 4. A second side view of the milling cutter with the cutting insert clamped according to the Fig. 1, Fig. 2 to Fig. 3, - Fig. 5 a schematic partial section view of the milling cutter with clamped cutting insert according to Fig. 1 along line AA, and - Fig. 6 a milling cutter with a clamped cutting insert in accordance with the state of the art.

[0033] In the Fig. 1, Fig. 2, Fig. 3, Fig. 4 to Fig. Figure 5 shows a milling cutter 10 which has a tool body 12 which rotates about its axis of rotation A during operation of the milling cutter 10.

[0034] The tool body 12 is essentially cylindrical and has an end face 14 at one end, onto which in Fig. 2 is viewed. The tool body 12 also has a cylindrical circumferential surface 16, which extends from the end face 14 to the other end of the tool body 12, which is not shown here.

[0035] The tool body 12 has a recess 18 that interrupts both the end face 14 and the circumferential surface 16. The recess 18 therefore extends radially inwards from the circumferential surface 16 and axially from the end face 14.

[0036] A cutting insert 20 is detachably attached in the recess 18, which is described in more detail below, in particular with reference to the Fig. 1 and Fig. 5.

[0037] The cutting insert 20 has a first main surface 22 (see Fig. 5), via which the cutting insert 20 rests against a stop surface 24 of the tool body 12, which defines the recess 18 in the tool body 12. The stop surface 24 extends essentially perpendicular to the direction of rotation of the milling cutter 10 and perpendicular to the end face 14 of the tool body 12.

[0038] The cutting insert 20 also has a second main surface 26, which is positioned opposite the first main surface 22. As can be seen from the Fig. 1, Fig. 2 and Fig. As can be seen in particular from Figure 4, the second main surface 26 is oriented towards the free space of the recess 18. The second main surface 26 accordingly has the chip surface over which the material removed from a workpiece is guided away.

[0039] Furthermore, the cutting insert 20 has a lateral surface 28 that connects the first main surface 24 with the second main surface 26.

[0040] In the embodiment shown, the cutting insert 20 is cuboid in shape, so that the lateral surface 28 is formed by four side surfaces 30 to 36, which each merge into one another via edges.

[0041] The main surfaces 22, 26 also transition via edges into the side surfaces 30 to 36, these edges being cutting edges 37 used for machining a workpiece. Depending on the arrangement and orientation of the cutting insert 20 in the recess 18, at least one of the cutting edges 37 is active.

[0042] In the illustrated embodiment, for example, the cutting edge 37 is active, which lies between the second main surface 26 and the first side surface 30. For the sake of clarity, only this cutting edge 37 is therefore provided with a reference numeral in the figures.

[0043] Alternatively or additionally, the cutting edge located between the second main surface 26 and the second side surface 32 can also be active. This depends on the use of the milling cutter 10.

[0044] In general, the cutting insert 20, due to its symmetrical design, is a reversible insert, which is why it can be rotated 180° about its central axis, so that the second main surface 26 rests against the stop surface 24 and the first main surface 22 has the rake face. Accordingly, a different cutting edge would be used to machine the workpiece.

[0045] Furthermore, the lateral surface 28 has the free surface which, in the embodiment shown, points radially outwards and, in the orientation shown, is located on the second side surface 32 (see Fig. 1) is provided. If the cutting insert 20 is turned and / or rotated, the clearance area is located on a different side surface 30, 34, 36, but always on the lateral surface 28.

[0046] The cylindrical surface 28 also has at least one clamping section 38, via which the cutting insert 20 is clamped in the recess 18.

[0047] In the embodiment shown, the cutting insert 20 has a total of eight clamping sections 38, each of which is provided at opposite ends of the side surfaces 30 to 36.

[0048] The tension sections 38 are further designed such that two tension sections 38 of adjacent side surfaces 30 to 36 merge into one another. This is clearly shown in the Fig. Figure 1 shows how the span section 38 at the right end of the first side surface 30 transitions into the span section 38 of the second side surface 32. The span section 38 at the right end of the first side surface 30 thus extends from the second side surface 32 towards the fourth side surface 36. The length of this span section 38 corresponds to approximately one-third of the total length of the first side surface 30.

[0049] Similarly, the clamping section 38 can be formed at the left end of the second side surface 32, which therefore extends from the first side surface 30 to about one third of the total length of the second side surface 32 in the direction of the third side surface 34.

[0050] In plan view, this results in an H-shaped configuration of the side surfaces 30 to 36, as shown in the Fig. 2 and Fig. 4 is clearly visible.

[0051] The clamping sections 38 are formed as groove-like recesses in the surface of the respective side surfaces 30 to 36, so that the recesses of the clamping sections 38 lie between the respective legs of the “H”.

[0052] A clamping element 40 engaging in the recesses can be positively received, wherein the recesses of the clamping sections 38 and the clamping element 40 are designed such that the outwardly facing surface of the clamping element 40 is deeper than the surface of the corresponding side surface 30 to 36 (see in particular Fig. 5) The clamping element 40 is thereby protected and received in the corresponding clamping section 38.

[0053] In the illustrated embodiment, two clamping elements 40 are provided, which engage the cutting insert 20 at two essentially perpendicular side surfaces 30 to 36. The two side surfaces 30 to 36 that interact with the clamping elements 40 are therefore adjacent side surfaces 30, 32 of the cutting insert 20. In the illustrated embodiment, the first clamping element 40 is assigned to the left clamping section 38 of the first side surface 30, and the second clamping element 40 to the right clamping section 38 of the second side surface 32. The clamping elements 40 thus do not engage the clamping sections 38 of the adjacent side surfaces 30, 32 that merge into one another.

[0054] The clamping elements 40 are designed separately from the tool body 12 and the cutting insert 20. In an alternative embodiment, however, the clamping elements 40 can also be designed as part of the tool body 12.

[0055] In the illustrated embodiment, the clamping elements 40 are also arm-shaped, so that they have a substantially elongated form. The ends 42 of the clamping elements 40, which each interact with the clamping sections 38 of the cutting insert 20, have a wedge-shaped cross-section. This gives each clamping element 40 a singular, inclined clamping surface 44, over which the clamping element 40 rests against a contact surface 46 formed in the clamping section 38 (see Fig. 5) The contact surface 46 is the bottom surface of the groove-like recess of the clamping section 38. The clamping surface 44 is inclined obliquely towards the first main surface 22.

[0056] The mounting surface 46 is singular and inclined obliquely towards the second main surface 26, as shown from Fig. Figure 5 clearly shows that the contact surface 46 and the clamping surface 44 are designed to be complementary to each other and are flat. This ensures that the force applied by the clamping element 40 to the cutting insert 20 is distributed as homogeneously as possible.

[0057] Due to the inclined contours of the contact surface 46 and the clamping surface 44, it is also ensured that the clamping element 40 clamps the cutting insert 20 in such a way that the clamping force exerted by the clamping element 40 has two force components, i.e., acts on the cutting insert 20 in two different directions, so that it is pressed in two directions.

[0058] The in Fig. The first clamping element 40 shown in Figure 5 presses the cutting insert 20 against the stop surface 24 in the recess 18 and against a first seating surface 48 in the tool body 12, on which the cutting insert 20 is supported via the third side surface 34 (see in particular Figure 5). Fig. 5). Accordingly, the first clamping element 40 presses the cutting insert 20 axially inwards against the first seat surface 48.

[0059] As from the Fig. As can be seen in particular from Figure 5, the clamping surface 44 is designed such that it is opposite a corner of the recess 18. The corner of the recess 18 is formed by the stop surface 24 and the first seating surface 48.

[0060] The second, in Fig. The clamping element 40 shown in Figure 1 is designed in an analogous manner to the first clamping element 40, which is shown in Figure 1. Fig. 5 has been shown in more detail and described just now.

[0061] The second clamping element 40 also has an end 42 with a wedge-shaped cross-section, so that it also has a singular, inclined clamping surface 44. The clamping surface 44 interacts with a correspondingly complementary singular, inclined contact surface 46 of the associated clamping section 38 in the second side surface 32. The second clamping element 40 therefore also presses the cutting insert 20 in two different directions, so that the cutting insert 20 again presses against the stop surface 24 and a second seating surface 50 (see Fig. 1) is pressed. The second clamping element 40 therefore ensures that the cutting insert 20 is additionally pressed radially inwards, namely against the second seat surface 50.

[0062] The clamping surface 44 of the second clamping element 40 is therefore also opposite a corner of the recess 18, which is formed by the stop surface 24 and the second seat surface 50.

[0063] In general, the recess 18 is bounded by three essentially perpendicular surfaces, namely the stop surface 24, the first seat surface 48 and the second seat surface 50.

[0064] Due to the design of the inclined clamping surfaces 44, the two clamping elements 40 press the cutting insert 20 once against the direction of rotation of the milling cutter 10 towards the stop surface 24, axially against the first seating surface 48, and radially inwards against the second seating surface 50. Accordingly, the cutting insert 20 is positively pressed into the corners of the recess 18 and is securely clamped.

[0065] Each of the two clamping elements 40 is received in an associated receiving pocket 52, 54 formed in the tool body 12. The receiving pockets 52, 54 each have a ramp-shaped contour over which the corresponding clamping element 40, with its elongated base element, at least partially rests.

[0066] The first receiving pocket 52 for the first clamping element 40 is machined into the end face 14 of the tool body 12, whereas the second receiving pocket 54 for the second clamping element 40 is provided in the circumferential surface 16 of the tool body 12. Accordingly, the first receiving pocket 52 extends axially from the end face 14, whereas the second receiving pocket 54 extends radially inwards from the circumferential surface 16.

[0067] The two clamping elements 40 are each attached to the tool body 12 by means of screws 56. The preload of the clamping elements 40 can be adjusted via the screws 56. Alternatively or additionally, springs can be provided, which also serve to preload the clamping elements 40.

[0068] Alternatively, the clamping elements 40 are formed integrally with the tool body 12. For example, the clamping elements 40 are integrally connected to the tool body 12 at their ends opposite the ends 42 and are only pre-tensioned more strongly via the screws 56 in order to clamp the cutting insert 20.

[0069] Additionally or alternatively, at least one additional retaining element can be provided in the recess 18, by which the cutting insert 20 is (additionally) secured. The retaining element is provided either on the first seat surface 48 or the second seat surface 50. The corresponding clamping element 40, which presses the cutting insert 20 against the first seat surface 48 or the second seat surface 50, can then be omitted.

[0070] The holding device features a snap-fit ​​connection, allowing the cutting insert 20 to be easily pressed into the corresponding seat 48, 50 and thus snapping into the holding device. The final adjustment and fixing of the cutting insert 20 is then achieved via the at least one clamping element 40.

[0071] An additional holding device can also be provided on both seat surfaces 48, 50, which each act in support of the tensioning elements 40.

[0072] In general, this provides an alternative way to clamp the cutting insert 20 into the milling cutter 10, whereby it is possible to dispense with fixing the cutting insert 20 via a central and centrally arranged clamping element that extends through the cutting insert 20.

Claims

[1] Cutting insert (20) for a milling cutter (10), comprising a first main surface (22) for bearing against a stop surface (24) of the milling cutter (10) oriented substantially perpendicular to the direction of rotation, a second main surface (26) opposite the first main surface (22) which has the rake surface, and a cylindrical surface (28) which connects the first main surface (22) with the second main surface (26) and has the clearance surface, wherein the cylindrical surface (28) is formed by several side surfaces (30 - 36), characterized by , that each side surface (30 - 36) has two span sections (38) at opposite ends, wherein the surface of the side surface (30 - 36) is H-shaped in plan view. [2] Cutting insert (20) according to claim 1, characterized by , that the side surfaces (30 - 36) merge into one another, in particular wherein the lateral surface (28) is formed by four side surfaces (30 - 36) arranged at right angles to each other. [3] Cutting insert (20) according to claim 1 or 2, characterized by , that at least one clamping section (38) is formed as a groove-like depression in the surface of the lateral surface (28). [4] Cutting insert (20) according to claim 3, characterized by that the indentations lie between the legs of the "H". [5] Cutting insert (20) according to claim 3 or 4, characterized by , that span sections (38) of adjacent side surfaces (30 - 36) merge into one another. [6] Cutting insert (20) according to any one of the preceding claims, characterized by , that the clamping section (38) has a singular, inclined contact surface (46) for the clamping element (40), wherein the contact surface (46) is inclined obliquely in the direction of the second main surface (26), in particular wherein the contact surface (46) forms the bottom surface of the recess. [7] Milling cutter (10) with a tool body (12) rotatable about a rotary axis (A), on which at least one cutting insert (20) according to one of the preceding claims is detachably attached in a recess (18) of the tool body (12), wherein the cutting insert (20) is subjected to force by at least one, in particular separate, arm-shaped, clamping element (40) in the tool body (12), which engages the clamping section (38). [8] Milling cutter (10) according to claim 7 characterized by , that the recess (18) in the tool body (12) has a circumferentially extending stop surface (24) against which the cutting insert (20) rests with its first main surface (22), in particular wherein the stop surface (24) is substantially perpendicular to the direction of rotation. [9] Milling cutter (10) according to claim 7 or 8, characterized by , that at least one clamping element (40) is attached to the tool body (12) via a screw (56), in particular is pre-tensioned. [10] Milling cutter (10) according to one of claims 7 to 9, characterized by , that in the tool body (12) a receiving pocket (52, 54) for the clamping element (40) is formed with a ramp-shaped contour for the at least one clamping element (40) along which the clamping element (40) extends, in particular wherein the bottom surface of the receiving pocket (52, 54) is additionally tilted obliquely in the longitudinal direction of the bottom surface to a radial plane or an axial plane of the tool body (12). [11] Milling cutter (10) according to one of claims 7 to 10, characterized by , that the clamping element (40) has an elongated shape and at the end (42) has a wedge-shaped cross-section with which the clamping element (40) interacts with the clamping section (38), so that the clamping element (40) has a singular, inclined clamping surface (44) with which it rests against the contact surface (46). [12] Milling cutter (10) according to claim 11, characterized by, that the clamping surface (44) is designed to be complementary to the contact surface (46) of the clamping section (38), in particular that it is designed to be flat. [13] Milling cutter (10) according to any one of claims 7 to 12, characterized by , that the clamping element (40) presses the cutting insert (20) axially against a first seating surface (48) of the tool body (12) or radially inwards against a second seating surface (50) of the tool body (12). [14] Milling cutter (10) according to claim 13, characterized by , that a retaining means is provided in the first and / or the second seat surface (48, 50) by which the cutting insert (20) is at least partially held, in particular a retaining means having a snap connection. [15] Milling cutter (10) according to any one of claims 7 to 14, characterized by, that two, in particular separate, arm-shaped, clamping elements (40) are provided which clamp the cutting insert (20), in particular wherein the two clamping elements (40) are arranged substantially offset from each other by 90° on the tool body (12), and in particular engage on adjacent side surfaces (30 - 36).

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