JP2005501748A - Cutting blade plate and cutting tool provided with the cutting blade plate - Google Patents

Abstract

In the cutting blade plate (1, 1 ') in which the base surface (3) is present on each plate plane (E1, E2) of the main body (2), the conical surface portion (4a) of the side surface (4) and the side of the portion The base surface of each other forms an acute angle (α) to form the cutting edge (5), and the flat surface portion (4b) on the same side surface forms an obtuse angle (β) with the base surface on the opposite side. The conical axis line (6) located in the plate plane of the conical surface portion extends in parallel with the plate center axis line (7) located in the same plate plane to form an eccentric arc-shaped course of the cutting edge. ing. In the cutting tool (17) having such a large number of cutting blade plates, the cutting blade plate provided in the peripheral range of the center line (M) of the tool holder (16) is preferably at the center line (M). On the other hand, it is shifted by Φ = (5 ± 3) °.

Description

【Technical field】
[0001]
The present invention relates to a cutting plate (Schneidplatte) provided with a base surface which is present on each side plate of the body and with at least one side surface. The present invention also relates to a cutting tool provided with the cutting blade plate. Here, the cutting blade plate means in particular a reversible cutting blade plate (Wendeschneidplatte), and the cutting tool particularly means a finishing mill.
[0002]
Due to the increasingly stringent demands on industrial parts or workpieces produced by machining, there is a particular need for improved surface quality. For the tool to be used to satisfy the requirements for a smooth surface polished as much as possible without a groove or streak, especially a smooth surface having a surface roughness (Rz) of 6 μm or less and an uneven height (Wt) of 3 μm or less. Special requirements are imposed. In this case, the geometry of the cutting edge, the cutting edge material, the selection of processing parameters and the precisely defined position of the cutting edge relative to the surface to be processed are particularly important.
[0003]
A cutting blade plate or a reversing cutting blade plate generally employed in this type of cutting tool, particularly a so-called finishing mill for obtaining a smooth surface, has a base surface on both sides. These basic surfaces are used as a mounting surface and a flank surface for the main cutting edge that is employed each time. Four flat surfaces are arranged on the peripheral surface of the inverted cutting blade plate, and these flat surfaces are used as rake surfaces for the cutting blade plate contact support surface and the meshing main cutting blade in the assembled state of the tool. The In this case, the flat surfaces each act as a front cutting edge surface with respect to the front cutting edge which is also in a meshed state.
[0004]
The cutting edge forming the main cutting edge is linear and extends parallel to the surface to be processed. At this time, there is a drawback that the angle error when positioning the linear blade edge with respect to the workpiece surface is sensitive, and therefore it is actually inevitable that only the blade tip preferentially acts on the work surface, Therefore, the requirements imposed on improving surface quality cannot be achieved in practice.
[0005]
Instead of a linear, straight cutting edge, a cutting edge with a circular or elliptical curvature can also be used. In the cutting blade plate known from EP 0 370 494, the curvature increases uniformly from the center of the cutting edge towards both ends of the cutting edge. However, a cutting edge that forms a circle or ellipse with respect to the workpiece surface is based on a curvature value that starts from the center of the cutting edge and increases uniformly toward both ends of the cutting edge. This produces the desired small error tolerance. In addition, in the case of a circularly curved cutting edge, there is a special problem that the surface quality deteriorates as the radius of the cutting edge decreases.
[0006]
In principle, there are two methods for positioning the cutting blade plate or the inverted cutting blade plate on the holder device. That is, the cutting blade plate or the inverted cutting blade plate is fixed to the holder with the position of the blade edge unchanged with respect to the surface, or is coupled to a holder whose position can be changed later with respect to the work surface. When the cutting blade plate is fixed with the cutting edge position unchanged, there is a drawback that a very precise tool holder is required for the cutting blade plate. On the other hand, when the cutting blade plate is coupled so that the cutting edge can be displaced later, there is a drawback that the entire apparatus is very sensitively affected by the position change of the cutting edge due to external action.
[0007]
An object of the present invention is to provide a cutting blade plate, particularly a reversing cutting blade plate, which eliminates the above-mentioned drawbacks and enables particularly high surface quality of a workpiece. Another object of the present invention is to provide a cutting tool, in particular a finishing mill, provided with a cutting blade plate in which the height of the uneven ridges or the depth of the valleys on the workpiece surface is as small as possible, and thus a particularly smooth surface can be obtained. . In particular, it is intended to be able to satisfy the above-mentioned requirements for the surface quality of the work surface.
[0008]
The above-mentioned problem with respect to the cutting blade plate is solved by the features of claim 1 based on the present invention. Therefore, the cutting blade plate has at least one side surface having a conical surface portion and a flat surface portion. The conical surface portion and the base surface facing the portion form an acute angle with each other to form a cutting edge, and the flat surface portion forms an obtuse angle with the opposite base surface. The conical surface portion of the conical surface portion in the plate plane, and thus in the plane of the base surface, extends in parallel with the cutting plate central axis located in the same plate plane so that the conical surface portion Projecting asymmetrically into a spherical shape and forming an eccentric arc-shaped course of the cutting edge. In other words, the axis of the conical surface portion is shifted with respect to the center axis of the cutting edge plate.
[0009]
The conic curve generated in this eccentric spherical surface portion, with respect to the work surface, measures from the cone axis to one or the other blade tip and forms an ellipse with two cutting edge segments of different lengths. Therefore, with respect to the work surface, the collision point of both segments, and hence the vertex of the elliptical cutting edge, is the highest point. The apex is located in the plate plane, i.e., directly below the conical surface portion or conical axis of the conical surface extending in the plane of the base surface. At that time, the radius of curvature is very large with respect to the arc length of the cutting edge, and is not clearly visible in practice. The arc course of the cutting edge is preferably located in the plane of the base surface.
[0010]
A cutting blade plate whose rake face is composed of a convex curved surface portion and a flat surface portion is known from DE 44 46 824 A1. In this case, the curvature of the convex surface portion is set so that the distance between the cutting edge and a virtual line connecting both ends of the cutting edge is maximized at the center of the cutting edge, unlike the cutting edge plate according to the present invention. In other words, the cutting edge is curved substantially symmetrically with respect to its end. Incidentally, the curved cutting edge of the known cutting edge plate cannot be used to generate a smooth workpiece surface, and the known cutting edge plate is provided on the peripheral surface of the cutting tool, so that the main cutting edge is the flat surface of the workpiece. It is not parallel to. In the case of a known cutting edge plate, a short front cutting edge is used to smooth the workpiece surface.
[0011]
In an advantageous embodiment, the cutting edge plate comprises a square inclined surface that is wedge-shaped along at least one purpose. This square inclined surface forms an obtuse angle with each of the conical surface portion, the flat surface portion, and the base surface opposite to the blade edge. By this wedge-shaped square inclined surface, there is an advantage that gentle biting can be achieved on the one hand and shortening of the cutting edge on the other side can be avoided.
[0012]
In another preferred embodiment, the conical surface portion and the flat surface portion are arranged at different angles so that the intersecting edge formed by these two surface portions is located on the side of the cutting edge together with its apex.
[0013]
In a particularly advantageous embodiment, the cutting edge plate is formed as a reversing cutting edge plate with such four side surfaces, with the conical surface portions and the flat surface portions on both side surfaces being inclined with respect to each other.
[0014]
In the case of this inverted cutting plate, two square inclined surfaces arranged symmetrically with respect to each base surface may be provided. In this case, each rectangular inclined surface forms an obtuse angle with one base surface and one side surface, and each rectangular inclined surface forms an acute angle with the conical surface portion of the adjacent side surface to form an elliptical edge. .
[0015]
Further, the inverted cutting blade plate is characterized by a rhombus body in which the opposing base surfaces on both sides thereof are twisted to each other by an angle of (97 ± 2) °, particularly 97 °.
[0016]
The cutting tool according to the invention has a number of cutting blade plates which are arranged in a tool holder distributed on a peripheral surface within the range of the cutting blade milling cutter. In particular, the double-sided reversing cutting blade plate is connected to the tool holder so that the cutting edge of each cutting blade plate is fixed in place, i.e. it can no longer be adjusted after the cutting edge. In that case, the cutting edge plate provided in the peripheral range of the 0 ° center line of the tool holder is arranged so as to be shifted by an angle of (5 ± 3) ° with respect to the center line.
[0017]
In a preferred embodiment of the cutting tool, the plate holder of the tool holder attached to each cutting blade plate includes a mounting surface corresponding to one of the basic surfaces of the cutting blade plate, and a contact support facing each side surface. In addition to the surface, it has a receiving opening for receiving a stopper pin that acts as an axial stopper for the cutting edge plate. By mounting the pins for the first time after processing the plate receiving seat, the mounting surface and the contact support surface of the plate receiving seat can be processed simultaneously in a single work process. As a result, a plane rotation accuracy of 10 μm is generated in the tool holder.
[0018]
The advantage according to the invention is that, in particular, the tool holder because of the eccentric spherical combination of the conical surface portions on each side of the cutting edge plate, and thus the curved cutting edge with distributed curvature maxima or vertices and the increased radius associated therewith. By disposing the cutting blade plate inside the tool holder in front of the 0 ° center line, particularly high surface quality of the work surface of the workpiece can be obtained. In particular, this type of tool used as a finishing mill can reduce the height of the ridges or valleys of the surface irregularities to about half that of a surface processed by a conventional finishing mill.
[0019]
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In each figure, the same portions are denoted by the same reference numerals.
[0020]
The cutting blade plate 1 of FIG. 1 has a main body 2 having two base surfaces 3 located on both plate side planes E1 and E2. The cutting blade plate 1 further has a side surface 4 having a conical surface portion 4a and a flat surface portion 4b. The conical surface portion 4a and the base surface 3 facing the portion 4a form an acute angle α (see FIG. 4) with each other to form a cutting edge 5. The flat surface portion 4b forms an obtuse angle β (see FIG. 4) with the base surface 3 on the opposite side.
[0021]
The cutting edge 5 has an arcuate course located in the plane E1 of the base surface 3, which comprises an eccentric curved part of the conical surface part 4a and thus an asymmetrical curved part. In that case, the conical axis 6 located in the plate plane E1 of the conical surface portion 4a extends parallel to the cutting plate central axis 7 located in the plate plane E1 with a gap d, and the cutting edge 5 is decentered. An arc-shaped course is formed.
[0022]
FIG. 2 shows a cutting blade plate which serves as a reversing plate or a reversing cutting blade plate 1 ′. The cutting edge plate 1 'has four side surfaces, only two of which are visible here. This cutting blade plate 1 ′ includes a rhombus-shaped main body 2 having four cutting edges 5. The geometrical shape and dimensions of the two basic surfaces 3 are at least approximately the same, but twisted by 97 ° relative to each other. Accordingly, the reversing cutting edge plate 1 'includes four flat surface portions 4b and four conical surface portions or conical surfaces 4a. Each one flat surface portion 4 b and one conical surface portion 4 a form one side surface 4 of the main body 2. The conical surface portions 4a located on both sides each form an acute angle α (see FIG. 4) with the base surface 3 on one side. The conical curve associated therewith becomes the cutting edge 5, and the corresponding cutting edge 5 also exists on the opposite side. The conical surface portion 4 a does not intersect the opposite base surface 3. Accordingly, there are two cutting edges 5 on each base surface 3.
[0023]
The flat surface portions 4b of the side surfaces 4 form an obtuse angle β (see FIG. 4) with the base surface 3, and the resulting edges 8 are not cutting edges. The flat surface portion 4b does not have a common edge with the base surface 3 on the opposite side. As is clear from FIG. 4 in particular, the conical surface portion 4a positioned opposite to the flat surface portion 4b positioned opposite to the both side surfaces 4 is inclined with respect to each other.
[0024]
The cutting edge plate 1 of FIG. 1 has one square inclined surface 9, whereas the inverted cutting edge plate 1 ′ of FIG. 2 comprises four such rectangular inclined surfaces 9. The two square inclined surfaces 9 are distributed symmetrically with respect to the respective base surfaces 3. The square inclined surface 9 extends between each base surface 3 and the flat surface portion 4b. Each square inclined surface 9 forms an obtuse angle with the base surface 3, the conical surface portion 4a, and the flat surface portion 4b, but this surface 9 is acutely angled with the other conical surface portions 4a that are not opposed to each other. Is made. The accompanying edge 10 forms an ellipsoid and is used particularly for corner or slope cutting processes.
[0025]
As can be seen from FIG. 3, also in the case of the double-sided reversing cutting edge plate 1 ′, each conical axis 6 is shifted from the central axis 7 of the reversing cutting edge plate 1 ′. The conic curve that accompanies this has an elliptical shape with cutting edge segments 5a and 5b having different lengths on the workpiece surface of the workpiece. With respect to the surface to be processed, the collision point of the two cutting edge segments 5a and 5b located at the vertex 11 (see FIGS. 1 and 2) is the highest point. The apex 11 is located below the conical axis 6 extending in the plate planes E1 and E2 of each base surface 3 (see FIG. 1). Since the radius of curvature of the arc portion of the blade edge 5 is very large, the shape of the arc of the blade edge 5 or the curvature thereof cannot be visually observed.
[0026]
The conical surface portion 4a and the flat surface portion 4b of each side surface 4 of the inverted cutting blade plate 1 'are arranged at different angles. The angle difference is selected so that the crossing edge 14 (see FIG. 4) generated by the crossing of the double-sided portions 4a and 4b is located on the cutting edge 5 side together with the apex 11 thereof.
[0027]
Another feature of the inverted cutting edge plate 1 ′ is that the conical surface portion 4 a arranged on the peripheral surface on the one hand and the flat surface portion 4 b arranged similarly on the peripheral surface on the other hand have different inclinations relative to the respective base surfaces 3. is there. In that case, a particularly gentle biting behavior is produced by the negative inclination angle δ in total, which facilitates the radial discharge of the shavings. In addition, the shape of the cutting edge 5 of the double-sided reversing type cutting blade plate 1 ′ is best matched to the above-mentioned geometric condition with respect to the cutting angle γ and the rear clearance angle δ. Deterioration of the surface image and surface parameters of the processed surface is expected.
[0028]
A continuous circular opening 15 is provided at the center of the cutting blade plate 1 or the inverted cutting blade plate 1 '. This opening 15 is used to hold the tool holder 16 (see FIG. 5) in a particularly simple manner by fastening bolt connection and screw connection. Therefore, the shape of the main body 2 makes it possible to produce a cutting blade plate 1 or a reversing cutting blade plate 1 ′ that satisfies the requirements regarding a smooth surface without any groove or streak.
[0029]
The formation of the outer shape of the cutting blade plates 1, 1 ′ having the shape shown in the figure is achieved by using the cutting blade plates 1, 1 ′ and a cutting tool or finishing mill 17 tool which will be described in detail with reference to FIGS. A line contact with the plate seat mounting surface of the holder 16 is ensured.
[0030]
In the cutting tool or the finishing mill 17 shown in FIG. 5, when the cutting angle γ = (0 ± 1) ° and the rear clearance angle δ = (− 5 ± 3) ° are obtained (see FIG. 8), the surface to be processed is reversed. The best position of the shaped cutting plate 1 'occurs. The value of the cutting angle γ is determined by the shape of the polishing of the surface portions 4a and 4b of the cutting edge plate 1 ′, and hence the shape of the cutting edge 5. However, the cutting angle γ can be changed when the polishing shape is different.
[0031]
A finishing mill 17 shown in FIG. 5 having a large number of inverted cutting blade plates 1 ′ distributed and arranged on the circumference of the cutting edge milling cutter of the tool holder 16 is placed between adjacent inverted cutting blade plates 1 ′ from the workpiece. A swarf discharge groove 18 for discharging swarf generated during the cutting of the surface is provided. The inverted cutting plate 1 ′ is arranged with a clearance angle ε = 7 °, and as a result, a rake angle φ = 6 ° in combination with a second front clearance angle η = 77 ° corresponding to the angle α (see FIG. 4). Will occur.
[0032]
In particular, as can be seen from FIG. 6, the inverted cutting edge plate 1 ′ located in the range of the center line M of the tool holder 16 has an offset angle ψ [ [ψ = (5 ± 3) °]. 2 to 4, each reversing cutting edge plate 1 ′ increases the radius of the elliptical cutting edge 5 in combination with the deviation, so that a particularly high surface quality is obtained when cutting the cutting tool 17. It is done.
[0033]
The tolerance of the spindle that drives the tool holder 17 can be compensated by the spherical or curved conical surface 4a of the side surface 4 of each of the cutting blade plates 1, 1 '. This also prevents the edge of the blade edge 5 from coming into contact with the workpiece whose surface is to be machined. In addition, this arrangement and basic structure of the cutting blade plates 1 and 1 'reduce the height of the surface irregularities and the depth of the valleys to almost half, so that the surface to be processed is free of flutes or streaks. It is improved about 2 times.
[0034]
Within the cutting tool 17, each inverted cutting blade plate 1 ′ forms four conical surface portions on the peripheral surface, and the convex curvature of these conical surface portions is the curvature of the cutting edge 5, the rake face of the main cutting edge and Partially forms the flank of the front cutting edge. On the other hand, those conical surface portions 4a do not have a function as a contact support surface in the plate receiving seat 20 shown in FIG.
[0035]
In the illustrated tool holder 16, special measures are taken to ensure the necessary positioning accuracy of the blade edge 5. In the tool holder 16, the position of the blade edge 5 with respect to the workpiece surface is determined by the position of the plate receiving seat 20 with respect to the contact support surface 21 and the receiving hole 22 (see FIG. 7) of the tool holder 16.
[0036]
Another major factor is the geometric accuracy of the reference surface, that is, the geometric accuracy of the mounting surface 23 facing the base surface 3 of the plate seat 20 and the contact support surface 24 facing the side surface 4. The geometric shape and manufacturing accuracy of the plate seat 20 are matched to the smallest possible deviation of the geometric parameters.
[0037]
As is apparent from FIGS. 8 and 9, in the case of the illustrated plate seat 20, the hardened steel pin 25 is used as an axial stopper for the inverted cutting blade plate 1 ′. Therefore, the plate receiving seat 20 is provided with an accommodation opening 26 for the stopper pin 25 in the range of the mounting surface 23. The stopper pin 25 is attached for the first time after processing the mounting surface or base surface 23 and the radial contact support surface 24. Its shape allows the mounting surface 23 and the radial contact support surface 24 to be processed in a single work step. By this measure, the plane rotation accuracy of 10 μm in the tool holder 16 can be guaranteed.
[0038]
The true circular accuracy of the reversing cutting edge plate 1 ′ with respect to the rotation axis 27 (see FIG. 7) of the cutting tool 17 can be determined exactly by the axial position of the hardened stopper pin 25. The deviation with respect to the rotation axis 27 must be as small as possible.
[0039]
As shown in FIG. 5, a plurality of screw holes 29 are arranged on the circumferential surface of the collar 28 of the tool holder 16. If necessary, threaded pins 30 with various lengths made of steel are screwed into these screw holes 29. These threaded pins 30 adjust the cutting tool 17 to a residual unbalance of 6.3 G when rotating at 10000 rpm. As a result, vibration and shaking during processing are reduced, and further improvement in surface roughness accuracy is achieved. The vibration is reduced as the unbalance of the cutting tool 17 is reduced. As a result, it is inevitably possible to achieve a reduction in free inertia and thus a reduction in the displacement of the tool under the influence. This condition also favors the quality and properties of the machined surface and makes the load on the drive spindle of the milling machine using the cutting tool 17 very small.
[0040]
The cutting blade milling tool or finishing mill of the tool holder 16 having the double-sided reversing type cutting blade plate 1 ′ with each of the four cutting edges 5 for finishing includes a reversing type cutting blade plate 1 ′ with a fixed position. In that case, the position of the cutting edge 5 relative to the surface can no longer be changed after fixing. Each reversing cutting blade plate 1 'is connected to the tool holder 16 so that the cutting edge 5 of the reversing cutting blade plate 1' is fixed to a predetermined position in an appropriate manner. Can no longer do. As a result, it is possible to practically prevent the displacement of the inverted cutting blade plate 1 ′ with respect to the tool holder 16 due to external action.
[Brief description of the drawings]
[0041]
FIG. 1 is a perspective view of a cutting blade plate according to the present invention.
FIG. 2 is a view corresponding to FIG. 1 of a reversing cutting plate according to the present invention.
3 is a plan view of the cutting blade plate in FIG. 2. FIG.
FIG. 4 is a side view of a cutting blade plate.
FIG. 5 is a perspective view of a cutting tool having such a large number of cutting blade plates.
FIG. 6 is a plan view of a cutting tool.
7 is a cross-sectional view of the cutting tool along the line VII-VII in FIG.
8 is an enlarged view of a part VIII in FIG.
9 is a partial view of a plate receiving seat in the tool holder of the cutting tool in FIG.
[Explanation of symbols]
[0042]
1, 1 'cutting blade plate, 2 main body, 3 base surface, 4 side surface, 4a, 4b surface portion, 5 cutting edge, 6 cone axis line, 7 plate center axis line, 8, 10, 14 edge, 9 polygonal inclined surface, 11 vertex , 15 opening, 16 tool holder, 17 cutting tool / finishing mill, 18 shavings discharge groove, 20 plate receiving seat, 21 contact support surface, 22 receiving hole, 23 mounting surface, 24 contact support surface, 25 stopper pin, 26 Housing opening, 27 rotation axis, 28 tool collar, 29 screw hole, 30 threaded pin, E1, 2 plate plane, M center line, O surface, d spacing, α acute angle, η second front relief angle, β obtuse angle, γ Cutting angle, σ back clearance angle, ε clearance angle, φ rake angle, ψ slip angle

Claims (13)

Cut with at least one side surface (4) having a base surface (3) and a conical surface portion (4a) and a flat surface portion (4b) respectively present on both plate planes (E1, E2) of the body (2) In the blade plate, the conical surface portion (4a) and the base surface (3) on the conical surface portion (4a) side form an acute angle (α) to form the cutting edge (5), and the flat surface portion (4b ) Form an obtuse angle (β) with the opposite base surface (3), and the conical axis line (6) located in the plate plane (E1, E2) of the conical surface portion (4a) has the same plate plane (E1, E2) A cutting blade plate characterized by extending in parallel with the plate center axis (7) located in the center, forming an eccentric arc-shaped course of the cutting edge (5). The cutting edge plate according to claim 1, characterized in that the cutting edge (5) has an arc shape in the plane of the base surface (3). 3. The cutting edge (5) with cutting edge segments (5a, 5b) of different lengths has an elliptical arc course extending from both sides starting from the cone axis (6). Cutting blade plate. 4. A conical surface portion (4a), a flat surface portion (4b), and a base surface (3) opposite to the cutting edge (5), each having an obtuse angled inclined surface (9). The cutting blade plate according to one of the above. 5. A cutting blade plate according to claim 4, characterized in that the square inclined surface (9) has a wedge shape. A first cutting edge segment (5a) extending from the apex (11) of the cutting edge (5) located below the conical axis (6) to the square inclined surface (9), and an inclined surface of the cutting edge (5) from the apex (11) The cutting edge plate according to claim 4 or 5, wherein the cutting edge plate has a second cutting edge segment (5b) extending to the tip of the non-cutting edge, and the first cutting edge segment (5a) is longer than the second cutting edge segment (5b). The double-sided portions (4a, 4b) are different so that the intersecting edge (14) formed by the conical surface portion (4a) and the flat surface portion (4b) is located on the blade edge (5) side together with the apex (11). The cutting blade plate according to claim 1, wherein the cutting blade plate is arranged at an angle. It is formed as a reversible cutting blade plate having four side surfaces (4), and the conical surface portion (4a) and the flat surface portion (4b) of the side surfaces (4) on both sides are inclined with respect to each other. The cutting blade plate according to one of claims 1 to 7. It has two rectangular inclined surfaces (9) arranged symmetrically with respect to each base surface (3), each of which has one basic surface (3) and one side surface (4). Each of which has an obtuse angle, and each of the inclined inclined surfaces (9) forms an elliptical edge (10) with an acute angle with the conical surface portion (4a) of the adjacent side surface (4). The cutting blade plate according to claim 8. 10. A cutting blade according to claim 8 or 9, characterized in that it has a rhomboid body (2) and the base surfaces (3) on both sides thereof are relatively twisted by 95-100 [deg.], In particular 97 [deg.]. Cutting tool (1, 1 ') according to one of claims 1 to 10, characterized in that a large number of cutting blade plates (1, 1') are arranged on the peripheral surface of the tool holder (16). The cutting blade plates (1, 1 ') provided in the peripheral area of the center line (M) of the tool holder (16) are arranged so as to be shifted by ψ = (5 ± 3) ° with respect to the center line (M). The cutting tool according to claim 11, wherein Each cutting blade plate (1, 1 ') has a mounting surface (23) corresponding to the base surface (3), a contact support surface (24) corresponding to the side surface (4), and a cutting blade plate (1, 1). Cutting tool according to claim 11 or 12, characterized in that it is provided with a plate seat (20) with a receiving opening (26) for receiving a stopper pin (25) acting as an axial stopper for ′). .