CN212350521U - Milling cutter - Google Patents

Abstract

The utility model provides a milling cutter, this milling cutter includes: the tool rest is provided with a mounting hole, and the inner contour of the cross section of the mounting hole is of a polygonal structure; the cutter head comprises a main body and a mounting convex part which are mutually connected, the mounting convex part is inserted into the mounting hole, and the outer profile of the cross section of the mounting convex part is matched with the inner profile of the cross section of the mounting hole; the connecting piece, detachably set up in the mounting hole, the first end and the knife rest of connecting piece are connected, and the second end and the installation convex part of connecting piece are connected. Through the technical scheme that this application provided, can solve the problem that cutter life among the prior art is short, with high costs.

Description

Milling cutter

Technical Field

The utility model relates to a processing equipment technical field particularly, relates to a milling cutter.

Background

At present, a milling cutter disc is of an integral structure, and the milling cutter disc is made of hard alloy, so that the milling cutter disc is high in machining difficulty and high in cost. Moreover, because the milling cutter disc is of an integral structure, in the process of machining a workpiece by using the milling cutter disc, if the milling cutter disc is damaged, the milling cutter disc needs to be replaced integrally, so that the service life of the cutter is short, and the machining cost is high.

Therefore, the problems of short service life and high cost of the cutter exist in the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model provides a milling cutter to solve the problem that cutter life among the prior art is short, with high costs.

The utility model provides a milling cutter, milling cutter includes: the tool rest is provided with a mounting hole, and the inner contour of the cross section of the mounting hole is of a polygonal structure; the cutter head comprises a main body and a mounting convex part which are mutually connected, the mounting convex part is inserted into the mounting hole, and the outer profile of the cross section of the mounting convex part is matched with the inner profile of the cross section of the mounting hole; the connecting piece, detachably set up in the mounting hole, the first end and the knife rest of connecting piece are connected, and the second end and the installation convex part of connecting piece are connected.

Further, the tool rest and the mounting convex part are both in threaded connection with the connecting piece, a first threaded structure is arranged at the first end of the connecting piece, a second threaded structure is arranged at the second end of the connecting piece, and the thread turning direction of the first threaded structure is opposite to that of the second threaded structure.

Furthermore, the first end and the second end of the connecting piece are both provided with external threads, a threaded hole is formed in the bottom wall of the mounting hole, the cutter head is provided with a through hole penetrating through the main body and the mounting convex portion, at least part of the through hole is provided with internal threads, the second end of the connecting piece is provided with a screwing stress portion, and the through hole is arranged corresponding to the screwing stress portion.

Further, the milling cutter tool further comprises a blade, wherein a mounting groove is formed in one end, far away from the mounting convex portion, of the main body, and the blade is detachably arranged in the mounting groove.

Further, the blade has preceding terminal surface, first side, rear end face and the second side of relative setting, and the diapire setting of mounting groove is corresponded to the first side, and the notch setting of mounting groove is corresponded to the second side, and preceding terminal surface is the inclined plane, and the angle of inclination of preceding terminal surface is between 10 to 20.

Further, the first side is the plane, and the diapire of mounting groove is the plane.

Further, first side is first inclined plane, and the diapire of mounting groove is the second inclined plane, and first inclined plane is laminated with the second inclined plane mutually.

Further, the blade still includes top surface and bottom surface, is provided with the constant head tank on top surface and/or the bottom surface, is provided with the location boss on the lateral wall of mounting groove, and the location boss is inserted and is established in the constant head tank.

Furthermore, the constant head tank includes interconnect's first locating surface and second locating surface, has the contained angle between first locating surface and the second locating surface.

Furthermore, the blade is provided with a locking hole penetrating through the first side surface and the second side surface, and the extending direction of the positioning groove is vertical to the axis of the locking hole.

Use the technical scheme of the utility model, this milling cutter includes knife rest, blade disc and connecting piece, and the blade disc can be dismantled with the knife rest and be connected. The inner contour of the cross section of the mounting hole of the tool rest is of a polygonal structure, the mounting convex part of the cutter head is inserted into the mounting hole, and the outer contour of the cross section of the mounting convex part is matched with the inner contour of the cross section of the mounting hole. Through setting up connecting piece detachably in the mounting hole, utilize the first end of connecting piece to be connected with the knife rest, utilize the second end of connecting piece to be connected with the installation convex part, can realize being connected with dismantling of knife rest with the blade disc. By adopting the structure, the milling cutter is divided into the cutter frame and the cutter head, so that the cutter head can be conveniently machined, and in the process of machining a workpiece by using the milling cutter, if the milling cutter is damaged, only the cutter head needs to be replaced, the whole milling cutter does not need to be replaced, the service life of the milling cutter can be prolonged, and the manufacturing and machining cost is reduced.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural diagram of a milling cutter according to an embodiment of the present invention;

fig. 2 shows a schematic structural diagram of an insert of a milling tool according to an embodiment of the present invention;

fig. 3 illustrates a front view of an insert of a milling cutter tool according to an embodiment of the present invention;

FIG. 4 shows a cross-sectional view at A-A in FIG. 3;

fig. 5 shows a top view of an insert of a milling cutter tool according to an embodiment of the present invention;

fig. 6 shows a schematic structural diagram of an insert of a milling tool according to a second embodiment of the present invention;

fig. 7 shows a front view of an insert of a milling tool provided according to a second embodiment of the present invention;

FIG. 8 shows a cross-sectional view at B-B in FIG. 7;

fig. 9 shows a top view of an insert of a milling tool according to a second embodiment of the present invention;

fig. 10 shows a schematic structural diagram of an insert of a milling cutter according to a third embodiment of the present invention;

fig. 11 shows a front view of an insert of a milling cutter provided in accordance with a third embodiment of the present invention;

FIG. 12 shows a cross-sectional view at C-C in FIG. 11;

fig. 13 shows a top view of an insert of a milling tool according to a third embodiment of the present invention;

fig. 14 shows an angular schematic view of an insert of a milling cutter tool according to an embodiment of the present invention;

fig. 15 shows a further angular schematic view of an insert of a milling tool according to an embodiment of the present invention.

Wherein the figures include the following reference numerals:

10. a tool holder; 11. mounting holes; 20. a cutter head; 21. a main body; 211. mounting grooves; 22. a mounting boss; 23. a through hole; 30. a connecting member; 40. a blade; 41. a front end face; 42. a first side surface; 43. a rear end face; 44. a second side surface; 45. a top surface; 46. a bottom surface; 47. positioning a groove; 471. a first positioning surface; 472. a second positioning surface; 48. a locking hole; 481. a first stage; 482. a second stage; 483. a third stage; 50. an adjusting screw; 60. locking the screw; a. the angle of inclination of the front end face; b. the tangent line of the juncture of the end part of the cutter head and the first side surface forms an included angle with the first side surface.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 to 5, a first embodiment of the present invention provides a milling tool, which includes a tool holder 10, a tool disc 20, and a connecting member 30, wherein the tool disc 20 is detachably connected to the tool holder 10 via the connecting member 30. The tool holder 10 has a mounting hole 11, the cross-sectional inner contour of the mounting hole 11 is a polygonal structure, the tool pan 20 includes a main body 21 and a mounting protrusion 22 connected to each other, the mounting protrusion 22 is inserted into the mounting hole 11, and the cross-sectional outer contour of the mounting protrusion 22 is matched with the cross-sectional inner contour of the mounting hole 11. By arranging the inner contour of the cross section of the mounting hole 11 to be a polygonal structure and matching the outer contour of the cross section of the mounting convex portion 22 with the inner contour of the cross section of the mounting hole 11, after the mounting convex portion 22 of the cutter head is inserted into the mounting hole 11 of the cutter holder, the cutter head 20 cannot rotate relative to the cutter holder 10, and the milling cutter can be conveniently used for processing. Specifically, the connecting member 30 is detachably disposed in the mounting hole 11, a first end of the connecting member 30 is connected to the tool holder 10, and a second end of the connecting member 30 is connected to the mounting protrusion 22, so that the tool pan 20 is detachably connected to the tool holder 10.

By using the milling cutter provided by the embodiment, the milling cutter is separately arranged into the cutter frame 10 and the cutter disc 20, and the connecting piece 30 is used to detachably connect the cutter disc and the cutter frame, so that the machining and assembling of the cutter disc 20 are facilitated. In the process of processing a workpiece by using the milling cutter, because the inner contour of the cross section of the mounting hole 11 is in a polygonal structure, the cutter head 20 cannot rotate relative to the cutter holder 10, and the processing by using the milling cutter is convenient. If the milling cutter is damaged, only the cutter disc 20 needs to be replaced, the whole milling cutter does not need to be replaced, the service life of the milling cutter can be prolonged, and the manufacturing and processing cost is reduced.

The polygonal structure comprises a triangle, a quadrangle, a hexagon, an octagon and the like. In the present embodiment, the inner contour of the cross-section of the mounting hole 11 is a triangle-like structure. Specifically, the cross section of the mounting hole 11 includes three sides connected end to end, and each side is an arc-shaped structure. By adopting the structure, the installation convex part of the cutter head can be conveniently inserted into the installation hole of the cutter frame, and the cutter head can be prevented from rotating relative to the cutter frame.

In this embodiment, the tool holder 10 and the mounting protrusion 22 are each threadedly coupled to the attachment member 30, the first end of the attachment member 30 is provided with a first thread structure, and the second end of the attachment member 30 is provided with a second thread structure, the first thread structure having a thread direction opposite to that of the second thread structure. The connection between the tool holder 10 and the tool disc 20 is realized by means of a threaded connection, which has the advantage of easy assembly. The connecting member 30 may be provided with an internal thread or an external thread, as long as the connecting member is in threaded connection with the tool holder and the cutter head. Through making the screw thread of first helicitic texture revolve to opposite with the screw thread of second helicitic texture revolve to, when assembling cutter head and knife rest, only need rotate the connecting piece, the usable first helicitic texture of connecting piece and the second helicitic texture drive cutter head move towards the knife rest, and then accomplish the assembly.

Specifically, the first end and the second end of the connector 30 are each provided with external threads. In this embodiment, the mounting hole 11 is a counter bore, and a threaded hole is formed in the bottom wall of the mounting hole 11, and the threaded hole is capable of being matched with the external thread of the first end of the connecting member 30 to realize the threaded connection between the first end of the connecting member and the tool holder. The cutter head 20 has a through hole 23 extending through the main body 21 and the mounting boss 22, at least part of the through hole 23 being provided with an internal thread which cooperates with the external thread of the second end of the connecting member 30 to effect a threaded connection of the second end of the connecting member to the cutter head. In other embodiments, threaded bores can be provided in both the first and second ends of the attachment member 30, and then external threads can be provided on the tool holder 10 and the mounting boss 22 to effect threaded engagement of both the tool holder 10 and the mounting boss 22 with the attachment member 30. In the present embodiment, the second end of the connecting member 30 is provided with a tightening force receiving portion, and the through hole 23 is provided corresponding to the tightening force receiving portion, so that the installation tool can be inserted into the through hole, and then the tightening force receiving portion is used to drive the connecting member 30 to rotate. Specifically, the second end of connecting piece 30 is provided with interior hexagonal hole, and interior hexagonal hole forms screws up the atress portion, utilizes outer hexagonal spanner can cooperate interior hexagonal hole can drive the connecting piece and rotate, and then realizes the assembly of blade disc and knife rest.

As shown in fig. 1, the milling cutter further comprises an insert 40, an end of the main body 21 remote from the mounting protrusion 22 is provided with a mounting groove 211, and the insert 40 is detachably disposed in the mounting groove 211. By detachably arranging the blades 40 on the cutter head 20, in the process of processing a workpiece by using the milling cutter, if part of the blades are damaged, only the damaged blades need to be replaced, and the whole milling cutter does not need to be replaced, so that the processing cost can be further reduced.

As shown in fig. 14, the blade 40 has a front surface 41, a first side surface 42, a rear surface 43 and a second side surface 44 which are oppositely arranged, the first side surface 42 is arranged corresponding to the bottom wall of the mounting groove 211, and the second side surface 44 is arranged corresponding to the notch of the mounting groove 211. In the present embodiment, the notch of the mounting groove refers to a side of the mounting groove opposite to the bottom wall. The front end face 41 is an inclined face, and the inclination angle a of the front end face 41 is between 10 ° and 20 °. By setting the inclination angle a of the front end face 41 within the above range, milling of a workpiece with the tool tip at the front end face is facilitated. If the angle of inclination of the front end face 41 is less than 10 deg., the front end face will influence the milling effect. If the inclination angle of the front end surface 41 is greater than 20 °, the structural strength at the tip end cannot be ensured. In the present embodiment, the inclination angle a of the front end face 41 is 15 °. In other embodiments, the inclination angle of the front end face 41 may be set to 12 °, 14 °, 16 °, 18 °.

In this embodiment, the first side surface 42 is a plane, and the bottom wall of the mounting groove 211 is a plane. The cutter has the advantages of simple structure and low cost, is convenient to install and is simple to operate.

In this embodiment, the blade is provided with the tool bit, and the material of tool bit includes PCBN and PCD to increase the life of blade, the base member of blade is carbide. Wherein PCBN is polycrystalline cubic boron nitride, and PCD is polycrystalline diamond.

As shown in fig. 15, the cutting head has a circular arc symmetric structure, and an included angle b between a tangent line at a junction of the end of the cutting head and the first side surface is between 5 ° and 15 °. In this embodiment, an included angle b between a tangent line at a boundary of the end of the cutter head and the first side surface is 10 °.

In this embodiment, the milling cutter comprises a milling cutter disc. Specifically, the milling tool comprises a fairway hard milling cutter disc.

As shown in fig. 1, the milling tool further comprises an adjusting screw 50, the rear end surface 43 of the insert 40 has a plurality of inclined surfaces, the adjusting screw has a conical surface, and the function of adjusting the radial position of the insert can be realized by the adjusting screw cooperating with the rear end surface 43 of the insert 40.

As shown in fig. 6 to 9, a second embodiment of the present invention provides a milling tool, and the difference between the second embodiment and the first embodiment is that in the second embodiment, the first side surface 42 is a first inclined surface, the bottom wall of the mounting groove 211 is a second inclined surface, and the first inclined surface and the second inclined surface are attached to each other. Through setting up the inclined plane for when the blade was installed in the mounting groove, the first side of blade and the diapire cooperation of mounting groove are accurate, can improve the assembly precision. Wherein the angle of inclination of the first side 42 is between 1 ° and 5 °. If the inclination angle of the first side face 42 is smaller than 1 °, the assembling and positioning functions cannot be realized; if the angle of inclination of the first side surface 42 is greater than 5 deg., the structural strength of the blade cannot be secured. In the present embodiment, the inclination angle of the first side face 42 is 2 °. In other embodiments, the inclination angle of the first side 42 may be set to 3 °, 4 °.

As shown in fig. 10 to 13, a third embodiment of the present invention provides a milling cutter, and the difference between the third embodiment and the first embodiment is that in the third embodiment, the blade 40 further includes a top surface 45 and a bottom surface 46, a positioning groove 47 is provided on the top surface 45 and/or the bottom surface 46, a positioning boss is provided on the side wall of the mounting groove 211, and the positioning boss is inserted into the positioning groove 47. Utilize location boss and constant head tank matched with mode for the blade is installed more stably in the mounting groove, improves the cooperation precision of blade side and mounting groove simultaneously.

Wherein positioning grooves 47 may be provided on the top surface 45, or positioning grooves 47 may be provided on the bottom surface 46, or positioning grooves 47 may be provided on both the top surface 45 and the bottom surface 46. In this embodiment, be provided with constant head tank 47 on the bottom surface 46, be provided with the location boss on one of them lateral wall of mounting groove, when assembling the blade in the mounting groove, the effect that location boss and constant head tank cooperate and can play the direction and fix a position can promote the assembly precision. In other embodiments, a positioning boss may be provided on the blade and a positioning slot may be provided in the mounting slot.

In this embodiment, the positioning groove 47 includes a first positioning surface 471 and a second positioning surface 472 connected to each other, and an included angle is formed between the first positioning surface 471 and the second positioning surface 472. Specifically, the bottom surface of blade is provided with V type constant head tank, and the lateral wall of the mounting groove with it complex also is provided with V type location boss. In other embodiments, the cross-sectional shape of the positioning groove may be an arc structure or a polygonal structure, as long as the positioning and reinforcing functions are achieved.

As shown in fig. 12, the blade 40 is provided with a locking hole 48 penetrating through the first side surface 42 and the second side surface 44, and the extending direction of the positioning groove 47 is perpendicular to the axis of the locking hole 48, so that the positioning groove and the positioning boss are matched to play a role in positioning and reinforcing, and the structural strength of the blade itself can be ensured.

The locking hole 48 includes a first section 481, a second section 482 and a third section 483 connected in sequence, and the locking hole has a symmetrical structure. Specifically, the first section 481 and the third section 483 are respectively located at two ends of the locking hole, the aperture of the first section and the third section is larger than that of the second section, the hole wall of the second section 482 is of an arc-shaped structure, the aperture of the locking hole at the center of the second section is the smallest, and the aperture of the second section is gradually increased in the direction away from the center of the second section. By adopting the structure, the blades can be conveniently locked on the cutter head by the locking screws 60, and the blades can be installed in both the front side and the back side due to the symmetrical structure of the locking holes, so that the assembly efficiency can be improved.

Specifically, the length direction of constant head tank edge blade extends, and the radial extension of blade disc is followed to the location boss, so with the in-process of blade assembly to the mounting groove, the effect of direction and location can be played to location boss and constant head tank, after the assembly of accomplishing the blade, because the location boss card is established in the constant head tank, can promote the steadiness of blade in the mounting groove.

The milling cutter provided by the embodiment has the following beneficial effects:

(1) the milling cutter is separately arranged into the cutter frame 10 and the cutter head 20, and the cutter head is detachably connected with the cutter frame by using the connecting piece 30, so that the cutter head 20 is conveniently processed and assembled;

(2) the blades 40 are detachably arranged on the cutter head 20, and in the process of processing a workpiece by using the milling cutter, if part of the blades are damaged, only the damaged blades need to be replaced, and the whole milling cutter does not need to be replaced, so that the processing cost can be further reduced;

(3) by arranging the inclined plane on the blade, when the blade is installed in the installation groove, the first side surface of the blade is accurately matched with the bottom wall of the installation groove, so that the assembly precision can be improved;

(4) through setting up the constant head tank on the blade, set up the location boss in the mounting groove, utilize location boss and constant head tank matched with mode for the blade is installed more stably in the mounting groove, improves the cooperation precision of blade side and mounting groove simultaneously.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A milling tool, characterized in that the milling tool comprises:

the tool holder (10) is provided with a mounting hole (11), and the inner contour of the cross section of the mounting hole (11) is of a polygonal structure;

the cutter head (20) comprises a main body (21) and a mounting convex part (22) which are connected with each other, the mounting convex part (22) is inserted into the mounting hole (11), and the outer profile of the cross section of the mounting convex part (22) is matched with the inner profile of the cross section of the mounting hole (11);

the connecting piece (30) is detachably arranged in the mounting hole (11), the first end of the connecting piece (30) is connected with the tool rest (10), and the second end of the connecting piece (30) is connected with the mounting convex part (22).

2. The milling tool according to claim 1, characterized in that the tool holder (10) and the mounting protrusion (22) are each threadedly connected to the connecting piece (30), a first end of the connecting piece (30) being provided with a first thread arrangement, a second end of the connecting piece (30) being provided with a second thread arrangement, the thread direction of the first thread arrangement being opposite to the thread direction of the second thread arrangement.

3. The milling tool according to claim 2, characterized in that the first and second ends of the connecting piece (30) are provided with an external thread, that a threaded hole is provided in the bottom wall of the mounting hole (11), that the cutter head (20) has a through hole (23) extending through the main body (21) and the mounting boss (22), that at least part of the through hole (23) is provided with an internal thread, that the second end of the connecting piece (30) is provided with a tightening stress, and that the through hole (23) is provided in correspondence with the tightening stress.

4. The milling tool according to claim 1, characterized in that the milling tool further comprises an insert (40), that an end of the main body (21) remote from the mounting protrusion (22) is provided with a mounting groove (211), and that the insert (40) is detachably arranged in the mounting groove (211).

5. The milling tool according to claim 4, characterized in that the insert (40) has oppositely arranged front (41), first (42), rear (43) and second (44) side surfaces, the first side surface (42) being arranged in correspondence with the bottom wall of the mounting groove (211), the second side surface (44) being arranged in correspondence with the notch of the mounting groove (211), the front end surface (41) being an inclined surface, the angle of inclination of the front end surface (41) being between 10 ° and 20 °.

6. The milling tool according to claim 5, characterized in that the first side surface (42) is plane and the bottom wall of the mounting groove (211) is plane.

7. The milling tool according to claim 5, characterized in that the first side surface (42) is a first bevel and the bottom wall of the mounting groove (211) is a second bevel, the first bevel abutting the second bevel.

8. The milling tool according to claim 5, characterized in that the insert (40) further comprises a top surface (45) and a bottom surface (46), wherein positioning grooves (47) are provided on the top surface (45) and/or the bottom surface (46), and positioning bosses are provided on the side walls of the mounting groove (211), the positioning bosses being inserted in the positioning grooves (47).

9. The milling tool according to claim 8, characterized in that the positioning slot (47) comprises a first positioning surface (471) and a second positioning surface (472) connected to each other, the first positioning surface (471) and the second positioning surface (472) having an angle therebetween.

10. The milling tool according to claim 8, characterized in that the insert (40) is provided with locking holes (48) through the first and second side surfaces (42, 44), the positioning slot (47) extending in a direction perpendicular to the axis of the locking holes (48).

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