A double-sided cutting insert and a cutting tool

Abstract

The present invention relates to the technical field of cutting tools, and provides a double-sided cutting insert and a cutting tool, which have the cutting characteristics of a double-sided positive insert with a special longitudinal side structure, can reasonably meet the requirement of good machining side quality, ensure low cutting force and the guiding effect in the cutting formation direction, thereby making the cutting smoother and more stable, provide longitudinal installation support, and separate the installation surface from the cutting flank surface without mutual interference, providing a guarantee for the implementation of safe and reliable cutting and stable installation.

Description

Technical Field

[0001] The present invention belongs to the technical field of cutting tools, and particularly relates to a double-sided cutting blade and a cutting tool. Background Art

[0002] With the popularization of high-power spindle machine tools, more and more customers need to meet large cutting parameters, pursue high metal removal rate to achieve high-efficiency cutting, and at the same time have reliable clamping, stable cutting, and excellent machining performance. Therefore, the development of cutting tools with stable and reliable clamping and low cutting force has become particularly important. Summary of the Invention

[0003] To solve the problems existing in the prior art, the main object of the present invention is to provide a double-sided cutting blade and a cutting tool.

[0004] To solve the above technical problems, according to one aspect of the present invention, the following technical solutions are provided:

[0005] A double-sided cutting blade, rotationally symmetric about the Y axis; comprising:

[0006] An upper end face, a lower end face disposed opposite to the upper end face, and a side face connecting the upper end face and the lower end face;

[0007] The side face includes a transverse side face, a longitudinal side face, and a corner side face located between adjacent transverse and longitudinal side faces:

[0008] The transverse side face includes a main transverse side face and a secondary transverse side face;

[0009] The longitudinal side face includes a main longitudinal side face, wherein the main longitudinal side face sequentially includes at least a first main longitudinal side face, a second main longitudinal side face, a third main longitudinal side face, a fourth main longitudinal side face, and a fifth main longitudinal side face along the Z axis direction from the upper end face to the lower end face;

[0010] The first main longitudinal side face and the second main longitudinal side face are adjacent in the Z axis direction;

[0011] The second main longitudinal side face and the fourth main longitudinal side face are separated by the third main longitudinal side face in the X axis direction, and both the second main longitudinal side face and the fourth main longitudinal side face are parallel to the Z axis;

[0012] The fourth main longitudinal side face and the fifth main longitudinal side face are adjacent in the Z axis direction.

[0013] As a preferred embodiment of the double-sided cutting blade of the present invention, wherein: the main longitudinal side face further includes a sixth main longitudinal side face and a seventh main longitudinal side face; the sixth main longitudinal side face and the seventh main longitudinal side face are respectively located at two diagonal corners of the main longitudinal side face, and are neither adjacent nor connected.

[0014] As a preferred embodiment of the double-sided cutting blade of the present invention, the following applies: Along the X-axis direction from the main transverse side to the secondary transverse side, at least the second main longitudinal side and the sixth main longitudinal side are sequentially arranged on the main longitudinal side.

[0015] As a preferred embodiment of the double-sided cutting blade of the present invention, the following applies: Along the X-axis direction from the secondary transverse side to the main transverse side, at least the fourth main longitudinal side and the seventh main longitudinal side are sequentially arranged on the main longitudinal side.

[0016] As a preferred embodiment of the double-sided cutting blade of the present invention, the following applies: In a cross-section perpendicular to the Z-axis, the sixth main longitudinal side and the second main longitudinal side have an angle θ, and the sixth main longitudinal side is inclined towards a direction closer to the center of the cutting blade relative to the second main longitudinal side, and the second main longitudinal side has a distance K1 from the center of the cutting blade.

[0017] As a preferred embodiment of the double-sided cutting blade of the present invention, the following applies: In a cross-section perpendicular to the Z-axis, the seventh main longitudinal side and the fourth main longitudinal side have an angle θ, and the seventh main longitudinal side is inclined towards a direction closer to the center of the cutting blade relative to the fourth main longitudinal side, and the fourth main longitudinal side has a distance K2 from the center of the cutting blade.

[0018] As a preferred embodiment of the double-sided cutting blade of the present invention, the following applies: The third main longitudinal side is located at a substantially middle position of the main longitudinal side. In a cross-section perpendicular to the Z-axis, the third main longitudinal side is parallel to the X-axis and perpendicular to the Y-axis, and the third main longitudinal side has a distance K from the center of the cutting blade.

[0019] As a preferred embodiment of the double-sided cutting blade of the present invention, the following applies: 0° < θ ≤ 40°, preferably 4° ≤ θ ≤ 8°; K1 > K, and K2 > K; 0.9 ≤ K:K1 < 1.

[0020] As a preferred embodiment of the double-sided cutting blade of the present invention, the following applies: The sixth main longitudinal side and the seventh main longitudinal side are respectively located on both sides of the third main longitudinal side. Among them, the sixth main longitudinal side is inclined towards a direction closer to the center of the cutting blade relative to the third main longitudinal side, and the seventh main longitudinal side is inclined towards a direction closer to the center of the cutting blade relative to the third main longitudinal side.

[0021] As a preferred embodiment of the double-sided cutting blade of the present invention, the following applies: Along the Z-axis direction from the upper end face to the lower end face, on the side of the main longitudinal side adjacent to the main transverse side, there are sequentially arranged a first main longitudinal side inclined towards a direction closer to the center of the cutting blade, a second main longitudinal side parallel to the Z-axis and not inclined, a second sub-transition surface of the seventh main longitudinal side inclined towards a direction closer to the center of the cutting blade, and a second sub-side of the seventh main longitudinal side parallel to the Z-axis.

[0022] As a preferred embodiment of the double-sided cutting blade of the present invention, along the Z-axis direction from the upper end face to the lower end face, on the side adjacent to the main transverse side face, the main longitudinal side faces are successively arranged with a first main longitudinal side face inclined downward in the direction close to the center of the cutting blade, a second main longitudinal side face parallel to the Z-axis and not inclined, a second sub-transition face of the seventh main longitudinal side face inclined downward in the direction close to the center of the cutting blade, a third main longitudinal side face inclined in the direction close to the center of the cutting blade as a whole, and a second sub-side face of the seventh main longitudinal side face parallel to the Z-axis.

[0023] As a preferred embodiment of the double-sided cutting blade of the present invention, along the Z-axis direction, from the upper end face to the lower end face, the main longitudinal side face part on the side adjacent to the main transverse side face and the main longitudinal side face part on the side adjacent to the secondary transverse side face are rotationally symmetric about the Y-axis by 180°.

[0024] As a preferred embodiment of the double-sided cutting blade of the present invention, the first main longitudinal side face and the fifth main longitudinal side face are rotationally symmetric about the Y-axis and non-coplanar, the sixth main longitudinal side face and the seventh main longitudinal side face are rotationally symmetric about the Y-axis and non-coplanar, and the second main longitudinal side face and the fourth main longitudinal side face are rotationally symmetric about the Y-axis and not connected.

[0025] As a preferred embodiment of the double-sided cutting blade of the present invention, when looking down at the upper end face from the Z-axis direction, the fifth main longitudinal side face and the sixth main longitudinal side face are visible, a small part of the third main longitudinal side face is visible or completely invisible, and the first main longitudinal side face, the second main longitudinal side face, the fourth main longitudinal side face, and the seventh main longitudinal side face are invisible.

[0026] As a preferred embodiment of the double-sided cutting blade of the present invention, when looking down at the upper end face from the Z-axis direction, the seventh main longitudinal side face on the side close to the main transverse side face has a distance H1 closer to the center of the cutting blade, where 0 < H1 < 1.

[0027] As a preferred embodiment of the double-sided cutting blade of the present invention, when looking down from the main longitudinal side face, along the Z-axis direction, the maximum height H0 exists between the upper end face and the lower end face.

[0028] As a preferred embodiment of the double-sided cutting blade of the present invention, when looking down at the upper end face, along the Y-axis direction, the maximum length H2 exists between the main longitudinal side face and the secondary longitudinal side face on the side close to the corner side face, and the minimum length H exists between the main longitudinal side face and the secondary longitudinal side face in the middle region of the cutting blade, where H2 > H.

[0029] As a preferred embodiment of the double-sided cutting blade of the present invention, wherein: in a cross-section perpendicular to the X-axis and parallel to the Y-axis, when viewed from the direction from the main transverse side to the secondary transverse side, the first main longitudinal side has a thickness H10 that gradually decreases in the Y-axis direction, and the fifth main longitudinal side has a thickness H12 that gradually increases in the Y-axis direction.

[0030] As a preferred embodiment of the double-sided cutting blade of the present invention, wherein: in a cross-section perpendicular to the X-axis and parallel to the Y-axis, when viewed from the direction from the main transverse side to the secondary transverse side, the third main longitudinal side successively has a region of gradual increase, a region of remaining unchanged, and a region of gradual decrease, B1 < B0, B0 > B2, and 0 < B0 < H0 / 3.

[0031] As a preferred embodiment of the double-sided cutting blade of the present invention, wherein: in a cross-section perpendicular to the X-axis and parallel to the Y-axis, when viewed from the direction from the main transverse side to the secondary transverse side, the seventh main longitudinal side has a distance H3 closer to the center of the cutting blade relative to the first main longitudinal side, and the sixth main longitudinal side has a distance H4 closer to the center of the cutting blade relative to the fifth main longitudinal side, wherein, 0 < H3 < H1, 0 < H4 < H1.

[0032] As a preferred embodiment of the double-sided cutting blade of the present invention, wherein: when the main longitudinal side is viewed from above in the Y-axis direction, the main longitudinal side has a maximum width W between the main transverse side and the secondary transverse side, and has a minimum width W3 between the two corner sides, wherein, 0.1 < W - W3 < 2.2.

[0033] As a preferred embodiment of the double-sided cutting blade of the present invention, wherein: when the main longitudinal side is viewed from above in the Y-axis direction, the main longitudinal side has a maximum width W between the main transverse side and the secondary transverse side, and the intersection boundary of the second main longitudinal side and the sixth main longitudinal side is closer to the secondary transverse side relative to the Z-axis and has a spacing W1 from the Z-axis, wherein, 0.001 ≤ W1:W ≤ 0.45.

[0034] As a preferred embodiment of the double-sided cutting blade of the present invention, wherein: the corner sides include a plurality of first corner sides and a plurality of fourth corner sides;

[0035] The cutting edge formed at the intersection of the side and the upper end face includes a main cutting edge, and the main cutting edge at least includes: a main cutting edge, a main corner cutting edge, a secondary cutting edge, and a secondary corner cutting edge. Among them, the main cutting edge is provided at the intersection of the main transverse side and the upper end face, the main corner cutting edge is provided at the intersection of the first corner side and the upper end face, the secondary cutting edge is provided at the intersection of the main longitudinal side adjacent to the first corner side and the upper end face, and the secondary corner cutting edge is provided at the intersection of the fourth corner side and the upper end face;

[0036] Wherein, both ends of the main cutting edge are respectively connected to the main corner cutting edge and the secondary corner cutting edge;

[0037] When looking down at the upper end face from the Z-axis direction, the main cutting edge is convex;

[0038] When looking down at the main transverse side face from the X-axis direction, the distance between the main cutting edge in the Z-axis direction and the Y-axis first decreases and then increases from the main corner cutting edge to the secondary corner cutting edge direction.

[0039] As a preferred embodiment of the double-sided cutting blade of the present invention, wherein: the cutting edge further includes a secondary edge, the secondary edge is provided at the intersection of the main longitudinal side face adjacent to one side of the fourth corner side face and the upper end face, both ends of the secondary cutting edge are respectively connected to the main corner cutting edge and the secondary edge, when looking down at the main longitudinal side face from the Y-axis direction, in the direction from the main transverse side face to the secondary transverse side face, the secondary cutting edge inclines towards a direction closer to the X-axis and has an angle α1 with the X-axis, the secondary edge has an angle α2 with the X-axis, wherein, 0° < α1 ≤ 35°, 0° ≤ α2 ≤ 30°, and α1 ≥ α2.

[0040] To solve the above technical problems, according to another aspect of the present invention, the present invention provides the following technical solutions:

[0041] A cutting tool, comprising:

[0042] A tool body and the above-mentioned cutting blade;

[0043] The upper end face of the cutting blade is provided with an upper mounting surface, and the lower end face is provided with a lower mounting surface;

[0044] The tool body has at least one insert groove, the insert groove includes a fourth longitudinal support surface and a third support surface, the fourth longitudinal support surface is matched with the sixth main longitudinal side face or the seventh main longitudinal side face, and the third support surface is matched with the mounting surface;

[0045] The fourth longitudinal support surface is arranged on one side away from the cutting blade along the rotation axis direction of the tool body and inclines towards the inside of the insert groove.

[0046] The beneficial effects of the present invention are as follows:

[0047] The present invention proposes a double-sided cutting blade and a cutting tool, which have the cutting characteristics of a double-sided positive blade with a special longitudinal side face structure, can reasonably meet good machining side face quality, ensure low cutting force and the guiding function of the cutting formation direction, and further can make the cutting become more gentle and stable, provide longitudinal installation support, separate the installed surface from the cutting flank, and do not interfere with each other, providing guarantee for realizing safe and reliable cutting, an economical tool structure that is easy to manufacture, and the implementation of stable installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0049] Figure 1 Structural schematic of the double-sided cutting blade of the present invention Figure 1 ;

[0050] Figure 2 Structural schematic of the double-sided cutting blade of the present invention Figure 2 ;

[0051] Figure 3 Structural schematic of the double-sided cutting blade of the present invention Figure 3 ;

[0052] Figure 4 Structural schematic of the lateral side of the double-sided cutting blade of the present invention;

[0053] Figure 5 Structural schematic of the end face of the double-sided cutting blade of the present invention;

[0054] Figure 6 Structural schematic of the longitudinal side of the double-sided cutting blade of the present invention;

[0055] Figure 7 is Figure 5 The sectional view along BI-BI in

[0056] Figure 8 is Figure 5 The sectional view along AZ-AZ in

[0057] Figure 9 is Figure 5 The sectional view along BH-BH in

[0058] Figure 10 is Figure 6 The sectional view along BG-BG in

[0059] Figure 11 is Figure 6 The sectional view along BC-BC in

[0060] Figure 12 is Figure 6 The sectional view along BF-BF in

[0061] Figure 13 is Figure 6 The sectional view along BB-BB in

[0062] Figure 14 This is a schematic structural diagram of the cutting tool of the present invention.

[0063] In the figure, the meanings of the reference numerals are as follows: 100: cutting insert; 200: tool body; 300: cutting tool;

[0064] 1: end face; 2: insert hole; 3: transverse side face; 5: main cutting edge; 6: secondary cutting edge; 7: corner side face;

[0065] X-axis: a virtual horizontal axis direction perpendicular to the center of the transverse side face and passing through the transverse side face;

[0066] Y-axis: a virtual vertical axis direction perpendicular to the center of the longitudinal side face and passing through the longitudinal side face;

[0067] Z-axis: a virtual axis direction perpendicular to the center of the end face and passing through the end face;

[0068] 11: upper end face; 12: lower end face;

[0069] 31: main transverse side face; 32: secondary transverse side face;

[0070] 41: main longitudinal side face; 42: secondary longitudinal side face;

[0071] 51: main cutting edge; 52: main corner cutting edge; 53: secondary cutting edge; 54: secondary corner cutting edge;

[0072] 71: first corner side face; 72: second corner side face; 73: third corner side face; 74: fourth corner side face;

[0073] 111: upper mounting surface; 112: main rake face; 113: corner rake face; 114: secondary rake face; 115: secondary front face; 116: chip breaker face; 121: lower mounting surface;

[0074] 411: first main longitudinal side face; 412: second main longitudinal side face; 413: third main longitudinal side face; 414: fourth main longitudinal side face; 415: fifth main longitudinal side face; 416: sixth main longitudinal side face; 417: seventh main longitudinal side face; 4161: first secondary side face; 4162: first secondary transition face; 4171: second secondary side face; 4172: second secondary transition face;

[0075] 201: insert pocket; 2013: third support surface; 2014: fourth longitudinal support surface.

[0076] Explanation of the marks at the ends of the arrows in the figure:

[0077] None: represents the entire regional surface of the orientation;

[0078] ~: represents the whole, such as the cutting insert, the tool body, and the cutting tool;

[0079] Solid arrow: represents the surface within the small area where it is located;

[0080] Solid black dot: represents the specific surface where it is located;

[0081] Hollow circle: represents a line;

[0082] Solid square: represents the specific line where it is located.

[0083] The realization, functional features and advantages of the object of the present invention will be further described in conjunction with embodiments with reference to the accompanying drawings. Detailed implementation manners

[0084] The technical solutions in the embodiments will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0085] The present invention provides a double-sided cutting blade and a cutting tool, as Figure 1-13 shown, a double-sided cutting blade, rotationally symmetric relative to the Y axis; comprising:

[0086] An upper end face 11, a lower end face 12 disposed opposite to the upper end face 11, and a side face connecting the upper end face 11 and the lower end face 12;

[0087] The side face includes a transverse side face 3, a longitudinal side face, and a corner side face 7 located between the adjacent transverse side face 3 and the longitudinal side face:

[0088] The transverse side face 3 includes a main transverse side face 31 and a secondary transverse side face 32;

[0089] The longitudinal side face includes a main longitudinal side face 41. Among them, the main longitudinal side face 41 sequentially includes at least a first main longitudinal side face 411, a second main longitudinal side face 412, a third main longitudinal side face 413, a fourth main longitudinal side face 414, and a fifth main longitudinal side face 415 along the Z axis direction from the upper end face 11 to the lower end face 12;

[0090] The first main longitudinal side face 411 is adjacent to the second main longitudinal side face 412 in the Z axis direction;

[0091] The second main longitudinal side face 412 and the fourth main longitudinal side face 414 are separated by the third main longitudinal side face 413 in the X axis direction, and both the second main longitudinal side face 412 and the fourth main longitudinal side face 414 are parallel to the Z axis;

[0092] The fourth main longitudinal side face 414 is adjacent to the fifth main longitudinal side face 415 in the Z axis direction.

[0093] The cutting blade 100 of the present invention has a specially configured longitudinal structure, that is, there is at least a characteristic surface across the longitudinal side between the two end faces 1 in the Z-axis direction on the side; none of the five characteristic surfaces are used for mounting purposes. Among them, the first main longitudinal side 411 and the fifth main longitudinal side 415 serve as main flank faces with positive clearance angles, providing guarantee for realizing cutting force; the second main longitudinal side 412 and the fourth main longitudinal side 414 serve as secondary flank faces that are closer to the center of the cutting blade 100 in the Y-axis direction and perpendicular to the end face, which not only reduces the manufacturing difficulty and cost but also further increases the avoidance space required for the cutting edge on the longitudinal side during cutting, providing guarantee for the implementation of safe and reliable cutting; the third main longitudinal side 413 can provide a parting path area without affecting the appearance and use of the blade, making the manufacturing simple and easy to achieve, and at the same time acting as a partition between the second main longitudinal side 412 and the fourth main longitudinal side 414, which can effectively disperse stress, avoid stress concentration from exacerbating blade deformation, and further affect the use, life and even the surface quality of the workpiece being machined.

[0094] In an embodiment of the present invention, the main longitudinal side 41 further includes a sixth main longitudinal side 416 and a seventh main longitudinal side 417; the sixth main longitudinal side 416 and the seventh main longitudinal side 417 are respectively located at two diagonal corners of the main longitudinal side 41, and are neither adjacent nor connected. Provide longitudinal mounting support, separate the surface for mounting from the cutting flank face, without interfering with each other, providing guarantee for the implementation of safe and reliable cutting and stable mounting.

[0095] In an embodiment of the present invention, along the X-axis direction from the main transverse side 31 to the secondary transverse side 32, at least the second main longitudinal side 412 and the sixth main longitudinal side 416 are sequentially arranged on the main longitudinal side 41; at least the fourth main longitudinal side 414 and the seventh main longitudinal side 417 are sequentially arranged on the main longitudinal side 41. Further define the detailed structural feature composition of the main longitudinal side 41, ensuring the implementation of safe and reliable cutting and stable mounting of the blade.

[0096] In an embodiment of the present invention, in a cross-section perpendicular to the Z-axis, the sixth main longitudinal side 416 and the second main longitudinal side 412 have an angle θ, and the sixth main longitudinal side 416 is inclined towards a direction closer to the center of the cutting blade 100 relative to the second main longitudinal side 412, and the second main longitudinal side 412 has a distance K1 from the center of the cutting blade 100. Further define the positional and structural relationship between the sixth main longitudinal side 416 providing longitudinal mounting and the second main longitudinal side 412 providing the secondary flank face for longitudinal cutting. The setting of a certain inclination angle θ cleverly forms an envelope at a certain angle with its mounting surface in the longitudinal side orientation. This setting is beneficial to the stable and reliable mounting of the blade in the insert pocket, can effectively reduce the risk of the blade shifting during cutting, and further improve the life of the tool.

[0097] In an embodiment of the present invention, in a cross-section perpendicular to the Z-axis, the seventh major longitudinal side surface 417 and the fourth major longitudinal side surface 414 form an angle θ. The seventh major longitudinal side surface 417 is inclined relative to the fourth major longitudinal side surface 414 in a direction closer to the center of the cutting blade 100, and the fourth major longitudinal side surface 414 has a distance K2 from the center of the cutting blade 100. The positional and structural relationship between the seventh major longitudinal side surface 417 provided for longitudinal mounting and the fourth major longitudinal side surface 414 provided for the longitudinal cutting secondary flank is further defined. The setting of a certain inclination angle θ cleverly forms an envelope at a certain angle with respect to its mounting surface in the longitudinal side surface orientation. This setting is beneficial to the stable and reliable mounting of the blade in the insert groove, can effectively reduce the risk of the blade shifting during cutting, and further improve the tool life.

[0098] In an embodiment of the present invention, the third major longitudinal side surface 413 is located at a substantially middle position of the major longitudinal side surface 41. In a cross-section perpendicular to the Z-axis, the third major longitudinal side surface 413 is parallel to the X-axis and perpendicular to the Y-axis, and the third major longitudinal side surface 413 has a distance K from the center of the cutting blade 100. The sixth major longitudinal side surface 416 and the seventh major longitudinal side surface 417 are respectively located on both sides of the third major longitudinal side surface 413. Among them, the sixth major longitudinal side surface 416 is inclined relative to the third major longitudinal side surface 413 in a direction closer to the center of the cutting blade 100, and the seventh major longitudinal side surface 417 is inclined relative to the third major longitudinal side surface 413 in a direction closer to the center of the cutting blade 100. The positional and structural relationship between the seventh major longitudinal side surface 417 and the sixth major longitudinal side surface 416 and the third major longitudinal side surface 413 is further defined. The ingenious structural setting can realize setting the parting area inside it, avoiding adverse effects on the mounting and use of the blade caused by burrs and poor joint marks at the parting, and at the same time, because it is set parallel to the X-axis, such a setting is beneficial for the green compact before sintering to be easily detached from the mold during the production and manufacturing of the blade. Moreover, the areas inclined towards the center of the blade are provided on both its left and right sides, which can further provide a larger axial space for the blade when it is mounted on the tool body during operation, can effectively reduce the risk of interference of the blade during cutting, is beneficial to the accessibility of cutting, and further improves the tool life and its economy.

[0099] As a preferred solution of the double-sided cutting blade of the present invention, wherein: 0° < θ ≤ 40°, preferably 4° ≤ θ ≤ 8°, the angle θ formed by the seventh major longitudinal side surface 417 and the fourth major longitudinal side surface 414 is further optimized. Effect: The setting of a certain inclination angle θ cleverly forms an envelope at a certain angle with respect to its mounting surface in the longitudinal side surface orientation. This setting is beneficial to the stable and reliable mounting of the blade in the insert groove, can effectively reduce the risk of the blade shifting during cutting, and further improve the tool life.

[0100] As a preferred embodiment of the double-sided cutting blade of the present invention, where: K1 > K and K2 > K; 0.9 ≤ K:K1 < 1, which provides convenience and reliability for pressing and demolding or die splitting or mold parting while reducing internal stress concentration without affecting the strength of the cutting blade.

[0101] In an embodiment of the present invention, along the Z-axis direction from the upper end face 11 to the lower end face 12, on the side of the main longitudinal side face 41 adjacent to the main transverse side face 31, there are successively arranged a first main longitudinal side face 411 inclined downward in the direction approaching the center of the cutting blade 100, a second main longitudinal side face 412 parallel to the Z-axis and not inclined, a second sub-transition face 4172 of the seventh main longitudinal side face 417 inclined downward in the direction approaching the center of the cutting blade 100, and a second sub-side face 4171 of the seventh main longitudinal side face 417 parallel to the Z-axis. Along the Z-axis direction from the upper end face 11 to the lower end face 12, on the side of the main longitudinal side face 41 adjacent to the main transverse side face 31, there are successively arranged a first main longitudinal side face 411 inclined downward in the direction approaching the center of the cutting blade 100, a second main longitudinal side face 412 parallel to the Z-axis and not inclined, a second sub-transition face 4172 of the seventh main longitudinal side face 417 inclined downward in the direction approaching the center of the cutting blade 100, a third main longitudinal side face 413 inclined as a whole in the direction approaching the center of the cutting blade 100, and a second sub-side face 4171 of the seventh main longitudinal side face 417 parallel to the Z-axis. Further elaborating on the detailed features of the main longitudinal side face 41 near the corner side face 7, setting the structure of the first main longitudinal side face 411 inclined downward in the direction approaching the center of the cutting blade 100 enables the cutting blade 100 to have a sharp axial secondary cutting edge 53 and a positive axial angle, which plays a role in reducing cutting force while enabling the cutting blade 100 to have a more appropriate working edge inclination angle; setting the structure of the second main longitudinal side face 412 perpendicular to the end face 1 and not inclined and the seventh main longitudinal side face 417 inclined downward in the direction approaching the center of the cutting blade 100 enables the cutting blade 100 to have a wider axial space to ensure light and stable cutting, and at the same time significantly reduces the risk of the flank face interfering with the workpiece during cutting; setting the structure of the third main longitudinal side face 413 inclined as a whole in the direction approaching the center of the cutting blade 100 provides convenience and reliability for pressing and demolding or die splitting or mold parting while reducing internal stress concentration; setting the structure of the seventh main longitudinal side face 417 perpendicular to the end face 1 and not inclined can further significantly reduce the risk of interference with the workpiece and provide a specially set longitudinal side mounting surface for cutting with the other end face 1 side.

[0102] In an embodiment of the present invention, along the Z-axis direction, from the upper end face 11 to the lower end face 12, a part of the main longitudinal side 41 adjacent to the main transverse side 31 is rotationally symmetric about the Y-axis by 180° with respect to a part of the main longitudinal side 41 adjacent to the secondary transverse side 32. The detailed features of the main longitudinal side 41 are reasonably arranged to achieve the unique characteristics of a indexable, double-sided cutting blade with both positive and negative cutting edges, a longitudinal side mounting structure with a certain anti-running function, and simple and easy realization of die splitting or demoulding or compression molding with high precision.

[0103] In an embodiment of the present invention, the first main longitudinal side 411 and the fifth main longitudinal side 415 are rotationally symmetric about the Y-axis and non-coplanar, the sixth main longitudinal side 416 and the seventh main longitudinal side 417 are rotationally symmetric about the Y-axis and non-coplanar (the sixth main longitudinal side 416 includes a first sub-side 4161 and a first sub-transition surface 4162), and the second main longitudinal side 412 and the fourth main longitudinal side 414 are rotationally symmetric about the Y-axis and not connected. The characteristics of the main longitudinal side 41 that are rotationally symmetric about the Y-axis and the characteristics of the third main longitudinal side 413 arranged along the X-axis direction are further defined. The unique characteristics of a double-sided cutting blade with both positive and negative cutting edges, a longitudinal side mounting structure with a certain anti-running function, and simple and easy realization of die splitting or demoulding or compression molding with high precision.

[0104] In an embodiment of the present invention, when looking down at the upper end face 11 from the Z-axis direction, the fifth main longitudinal side 415 and the sixth main longitudinal side 416 are visible, a small part of the third main longitudinal side 413 is visible or completely invisible, and the first main longitudinal side 411, the second main longitudinal side 412, the fourth main longitudinal side 414, and the seventh main longitudinal side 417 are invisible. The unique characteristics of the main longitudinal side 41 from the perspective of the Z-axis direction are further defined, which has functions of reliable mounting, low cutting force, and low interference risk. The visible area can achieve low axial cutting force, and the invisible area can reduce the risk of the flank face interfering with the workpiece during cutting.

[0105] In an embodiment of the present invention, when looking down at the upper end face 11 from the Z-axis direction, the seventh main longitudinal side 417 close to the main transverse side 31 has a distance H1 closer to the center of the cutting blade 100, where 0 < H1 < 1. The unique characteristics of the main longitudinal side 41 from the perspective of the Z-axis direction are further elaborated, which has the function of low interference risk and can reduce the risk of the flank face interfering with the workpiece during cutting.

[0106] In an embodiment of the present invention, when viewed from above the main longitudinal side 41, along the Z-axis direction, the maximum height H0 is provided between the upper end face 11 and the lower end face 12. When viewed from above the upper end face 11, along the Y-axis direction, the maximum length H2 is provided between the main longitudinal side 41 and the secondary longitudinal side 42 on the side close to the corner side 7, and the minimum length H is provided between the main longitudinal side 41 and the secondary longitudinal side 42 in the middle region of the cutting blade 100, where H2 > H. The unique features of the cutting blade 100 are further defined. The setting of the minimum length H in the middle region in the end face view enables the secondary cutting edge 53 to have a better trimming effect while protecting the secondary cutting edge 53 from premature failure, which can improve the cutting life and the machining surface quality.

[0107] In an embodiment of the present invention, in a cross-section perpendicular to the X-axis and parallel to the Y-axis, when viewed from the direction from the main transverse side 31 to the secondary transverse side 32, the first main longitudinal side 411 has a thickness H10 that gradually decreases along the Y-axis direction, and the fifth main longitudinal side 415 has a thickness H12 that gradually increases along the Y-axis direction. The variation relationship and layout of the respective faces of the main longitudinal side 41 are defined. The setting of the special structure can meet the requirements of the blade strength and low blade cutting force under different cutting feed rates, and effectively balance the cutting performance and the blade stability.

[0108] In an embodiment of the present invention, in a cross-section perpendicular to the X-axis and parallel to the Y-axis, when viewed from the direction from the main transverse side 31 to the secondary transverse side 32, the third main longitudinal side 413 successively has a gradually increasing region B1 to B0, a region B0 that remains unchanged, and a gradually decreasing region B0 to B2, where B1 < B0, B0 > B2, and 0 < B0 < H0 / 3. The features of the third main longitudinal side 413 are defined, which provides convenience and reliability for pressing demolding or die splitting or part molding while reducing the internal stress concentration without affecting the strength of the cutting blade.

[0109] In an embodiment of the present invention, in a cross-section perpendicular to the X-axis and parallel to the Y-axis, when viewed from the direction from the main transverse side 31 to the secondary transverse side 32, the seventh main longitudinal side 417 has a distance H3 closer to the center of the cutting blade 100 compared to the first main longitudinal side 411, and the sixth main longitudinal side 416 has a distance H4 closer to the center of the cutting blade 100 compared to the fifth main longitudinal side 415, where 0 < H3 < H1 and 0 < H4 < H1. The unique features of the main longitudinal side 41 are further defined, which has a low interference risk and a certain anti-running function, and can reduce the risk of the flank face interfering with the workpiece during cutting.

[0110] In an embodiment of the present invention, when looking down at the main longitudinal side 41 from the Y-axis direction, the main longitudinal side 41 has a maximum width W between the main transverse side 31 and the secondary transverse side 32, and a minimum width W3 between the two corner sides 7, where 0.1 < W - W3 < 2.2.

[0111] In an embodiment of the present invention, when looking down at the main longitudinal side 41 from the Y-axis direction, the main longitudinal side 41 has a maximum width W between the main transverse side 31 and the secondary transverse side 32. The intersection boundary of the second main longitudinal side 412 and the sixth main longitudinal side 416 is closer to the secondary transverse side 32 relative to the Z-axis and has a spacing W1 from the Z-axis, where 0.001 ≤ W1:W ≤ 0.45. Defining the size, shape, and positional relationship of the sixth main longitudinal side 416 for side mounting ensures stable and reliable side mounting. Meanwhile, according to the reasonable arrangement of relevant parameters, it can adapt to cutting with different cutting parameters and working conditions, obtaining low cutting force and high economy.

[0112] In an embodiment of the present invention, the corner side 7 includes a plurality of first corner sides 71 and a plurality of fourth corner sides 74;

[0113] The cutting edge formed at the intersection of the side and the upper end face 11 includes a main cutting edge 5. The main cutting edge 5 at least includes: a main cutting edge 51, a main corner cutting edge 52, a secondary cutting edge 53, and a secondary corner cutting edge 54. Among them, the main cutting edge 51 is provided at the intersection of the main transverse side 31 and the upper end face 11, and the main cutting edge 51 is formed by the intersection of the main transverse side 31 and the main front cutting plane 112. The main corner cutting edge 52 is provided at the intersection of the first corner side 71 and the upper end face 11, and the main corner cutting edge 52 is formed by the intersection of the first corner side 71 and the corner front cutting plane 113. The secondary cutting edge 53 is provided at the intersection of the main longitudinal side 41 adjacent to the first corner side 71 and the upper end face 11, and the secondary cutting edge 53 is formed by the intersection of the main longitudinal side 41 and the secondary front cutting plane 114. The secondary corner cutting edge 54 is provided at the intersection of the fourth corner side 74 and the upper end face 11; the upper end face 11 is further provided with a chip-return surface 116, which is inclined from the upper end face 11 towards the main cutting edge 51;

[0114] Among them, both ends of the main cutting edge 51 are respectively connected to the main corner cutting edge 52 and the secondary corner cutting edge 54;

[0115] When looking down at the upper end face 11 from the Z-axis direction, the main cutting edge 51 is convex;

[0116] When looking down at the main transverse side 31 from the X-axis direction, the distance between the main cutting edge 51 in the Z-axis direction and the Y-axis first decreases and then increases from the main corner cutting edge 52 towards the secondary corner cutting edge 54.

[0117] The convex main cutting edge 51 and the special structural arrangement in which the main cutting edge 51 first decreases and then increases can reasonably meet the requirement of good machining side quality. The decreasing part of the main cutting edge 51 can better ensure low cutting force and the guiding effect in the cutting formation direction. The increasing part of the main cutting edge 51 in the reverse direction can ensure the primary requirement of a stronger cutting edge when the cutting depth is large. Furthermore, the cutting can be made smoother and more stable.

[0118] In an embodiment of the present invention, the cutting edge further includes a secondary edge 6. The secondary edge 6 is disposed at the intersection of the main longitudinal side 41 adjacent to one side of the fourth corner side 74 and the upper end face 11. The secondary edge 6 is formed by the intersection of the main longitudinal side 41 and the secondary front face 115. Both ends of the secondary cutting edge 53 are respectively connected to the main corner cutting edge 52 and the secondary edge 6. When looking down at the main longitudinal side 41 from the Y-axis direction, in the direction from the main transverse side 31 to the secondary transverse side 32, the secondary cutting edge 53 is inclined towards a direction closer to the X-axis and has an angle α1 with the X-axis. The secondary edge 6 has an angle α2 with the X-axis, where 0° < α1 ≤ 35°, 0° ≤ α2 ≤ 30°, and α1 ≥ α2. By setting the position and size relationship of the secondary cutting edge 53 and the secondary edge 6, while ensuring stable and reliable side mounting, according to the reasonable arrangement of relevant parameters, it can adapt to cutting with different cutting parameters and working conditions, obtaining low cutting force and high economy.

[0119] The present invention also provides a cutting tool, as Figure 14 shown, including:

[0120] a tool body 200 and the above-mentioned cutting blade 100;

[0121] The upper end face 11 of the cutting blade 100 is provided with an upper mounting surface 111, and the lower end face 12 is provided with a lower mounting surface 121;

[0122] The tool body 200 has at least one insert groove 201. The insert groove 201 includes a fourth longitudinal support surface 2014 and a third support surface 2013. The fourth longitudinal support surface 2014 is matched with the sixth main longitudinal side 416 or the seventh main longitudinal side 417, and the third support surface 2013 is matched with the upper mounting surface 111 and the lower mounting surface 121;

[0123] The fourth longitudinal support surface 2014 is disposed on a side away from the cutting blade 100 along the rotation axis direction of the tool body 200 and is inclined towards the inside of the insert groove 201.

[0124] The special insert groove structure, which is inclined towards the inside of the tool body 200, when the loaded blade tends to move and tilt forward, the aforementioned special structure of the tool will envelope the blade to prevent it from escaping, further strengthening the anti-creeper, stable mounting and reliable cutting capabilities of the tool.

[0125] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made by using the content of the specification of the present invention under the inventive concept of the present invention, or any direct / indirect application in other related technical fields shall be included within the patent protection scope of the present invention.

Claims

1. A double-sided cutting blade, characterized in that, Rotationally symmetric about the Y-axis; including: An upper end face (11), a lower end face (12) disposed opposite to the upper end face (11), and side faces connecting the upper end face (11) and the lower end face (12); The side faces include transverse side faces (3), longitudinal side faces, and corner side faces (7) located between adjacent transverse side faces (3) and longitudinal side faces: The transverse side faces (3) include a main transverse side face (31) and a secondary transverse side face (32); The longitudinal side faces include a main longitudinal side face (41), wherein the main longitudinal side face (41) sequentially includes at least a first main longitudinal side face (411), a second main longitudinal side face (412), a third main longitudinal side face (413), a fourth main longitudinal side face (414), and a fifth main longitudinal side face (415) along the Z-axis direction from the upper end face (11) to the lower end face (12), and none of them are used for installation purposes; The first main longitudinal side face (411) is adjacent to the second main longitudinal side face (412) in the Z-axis direction; The second main longitudinal side face (412) and the fourth main longitudinal side face (414) are separated by the third main longitudinal side face (413) in the X-axis direction, and both the second main longitudinal side face (412) and the fourth main longitudinal side face (414) are parallel to the Z-axis; The fourth main longitudinal side face (414) is adjacent to the fifth main longitudinal side face (415) in the Z-axis direction; The main longitudinal side face (41) further includes a sixth main longitudinal side face (416) and a seventh main longitudinal side face (417); the sixth main longitudinal side face (416) and the seventh main longitudinal side face (417) are respectively located at two diagonal corners of the main longitudinal side face (41), and are neither adjacent nor connected, providing longitudinal installation support; In a cross-section perpendicular to the Z-axis, the sixth main longitudinal side face (416) has an angle θ with the second main longitudinal side face (412), and the sixth main longitudinal side face (416) is inclined in a direction closer to the center of the cutting blade (100) relative to the second main longitudinal side face (412); in a cross-section perpendicular to the Z-axis, the seventh main longitudinal side face (417) has an angle θ with the fourth main longitudinal side face (414), and the seventh main longitudinal side face (417) is inclined in a direction closer to the center of the cutting blade (100) relative to the fourth main longitudinal side face (414); the third main longitudinal side face (413) is located at the middle position of the main longitudinal side face (41), and in a cross-section perpendicular to the Z-axis, the third main longitudinal side face (413) is parallel to the X-axis and perpendicular to the Y-axis, and the sixth main longitudinal side face (416) and the seventh main longitudinal side face (417) are respectively located on both sides of the third main longitudinal side face (413).

2. The double-sided cutting blade according to claim 1, wherein Along the X-axis direction from the main transverse side face (31) to the secondary transverse side face (32), at least the second main longitudinal side face (412) and the sixth main longitudinal side face (416) are sequentially arranged on the main longitudinal side face (41); Along the X-axis direction from the secondary transverse side face (32) to the main transverse side face (31), at least the fourth main longitudinal side face (414) and the seventh main longitudinal side face (417) are sequentially arranged on the main longitudinal side face (41).

3. The double-sided cutting blade according to claim 1, wherein The second main longitudinal side face (412) has a distance K1 from the center of the cutting blade (100); The fourth major longitudinal side (414) has a distance K2 from the center of the cutting blade (100); and the third major longitudinal side (413) has a distance K from the center of the cutting blade (100).

4. The double-sided cutting blade according to claim 3, characterized in that, 0° < θ ≤ 40°.

5. The double-sided cutting blade according to claim 4, characterized in that, 4° ≤ θ ≤ 8°.

6. The double-sided cutting blade according to claim 3, characterized in that, K1 > K, and K2 > K.

7. The double-sided cutting blade according to claim 3, characterized in that 0.9 ≤ K:K1 < 1.

8. The double-sided cutting blade according to claim 3, characterized in that, The sixth major longitudinal side (416) is inclined in a direction closer to the center of the cutting blade (100) relative to the third major longitudinal side (413), and the seventh major longitudinal side (417) is inclined in a direction closer to the center of the cutting blade (100) relative to the third major longitudinal side (413).

9. The double-sided cutting blade according to claim 1, wherein, Along the Z-axis direction from the upper end face (11) to the lower end face (12), on the side adjacent to the major transverse side (31), the major longitudinal side (41) is successively arranged with a first major longitudinal side (411) inclined downward in a direction closer to the center of the cutting blade (100), a second major longitudinal side (412) parallel to the Z-axis and not inclined, a second sub-transition surface (4172) of the seventh major longitudinal side (417) inclined downward in a direction closer to the center of the cutting blade (100), and a second sub-side surface (4171) of the seventh major longitudinal side (417) parallel to the Z-axis.

10. The double-sided cutting blade according to claim 1, characterized in that, Along the Z-axis direction from the upper end face (11) to the lower end face (12), on the side adjacent to the major transverse side (31), the major longitudinal side (41) is successively arranged with the first major longitudinal side (411) inclined downward in a direction closer to the center of the cutting blade (100), the second major longitudinal side (412) parallel to the Z-axis and not inclined, the second sub-transition surface (4172) of the seventh major longitudinal side (417) inclined downward in a direction closer to the center of the cutting blade (100), a third major longitudinal side (413) inclined in a direction overall closer to the center of the cutting blade (100), and a second sub-side surface (4171) of the seventh major longitudinal side (417) parallel to the Z-axis.

11. The double-sided cutting blade according to claim 1, characterized in that, Along the Z-axis direction, from the upper end face (11) to the lower end face (12), the part of the major longitudinal side (41) on the side adjacent to the major transverse side (31) and the part of the major longitudinal side (41) on the side adjacent to the minor transverse side (32) are rotationally symmetric about the Y-axis by 180°.

12. The double-sided cutting blade according to claim 1, characterized in that, The first major longitudinal side (411) and the fifth major longitudinal side (415) are rotationally symmetric about the Y-axis and non-coplanar, the sixth major longitudinal side (416) and the seventh major longitudinal side (417) are rotationally symmetric about the Y-axis and non-coplanar, and the second major longitudinal side (412) and the fourth major longitudinal side (414) are rotationally symmetric about the Y-axis and not connected; When looking down at the upper end face (11) from the Z-axis direction, the fifth major longitudinal side (415) and the sixth major longitudinal side (416) are visible, a small part of the third major longitudinal side (413) is visible or completely invisible, and the first major longitudinal side (411), the second major longitudinal side (412), the fourth major longitudinal side (414), and the seventh major longitudinal side (417) are invisible.

13. The double-sided cutting blade according to claim 1, characterized in that, Looking down at the upper end face (11) from the Z-axis direction, the seventh major longitudinal side face (417) closer to the major lateral side face (31) has a distance H1 closer to the center of the cutting blade (100), where 0 < H1 < 1.

14. The double-sided cutting blade according to claim 13, wherein, When looking down at the major longitudinal side face (41), along the Z-axis direction, there is a maximum height H0 between the upper end face (11) and the lower end face (12).

15. The double-sided cutting blade according to claim 14, wherein, When looking down at the upper end face (11), along the Y-axis direction, there is a maximum length H2 between the major longitudinal side face (41) and the minor longitudinal side face (42) on the side closer to the corner side face (7), and a minimum length H between the major longitudinal side face (41) and the minor longitudinal side face (42) in the middle region of the cutting blade, where H2 > H.

16. The double-sided cutting blade according to claim 15, characterized in that, In a cross-section perpendicular to the X-axis and parallel to the Y-axis, when looking from the direction of the major lateral side face (31) to the minor lateral side face (32), the first major longitudinal side face (411) has a thickness H10 that gradually decreases along the Y-axis direction, and the fifth major longitudinal side face (415) has a thickness H12 that gradually increases along the Y-axis direction.

17. The double-sided cutting blade according to claim 16, wherein, In a cross-section perpendicular to the X-axis and parallel to the Y-axis, when looking from the direction of the major lateral side face (31) to the minor lateral side face (32), the seventh major longitudinal side face (417) has a distance H3 closer to the center of the cutting blade (100) relative to the first major longitudinal side face (411), and the sixth major longitudinal side face (416) has a distance H4 closer to the center of the cutting blade (100) relative to the fifth major longitudinal side face (415), where 0 < H3 < H1, 0 < H4 < H1.

18. The double-sided cutting blade according to claim 17, characterized in that, When looking down at the major longitudinal side face (41) from the Y-axis direction, the major longitudinal side face (41) has a maximum width W between the major lateral side face (31) and the minor lateral side face (32), and a minimum width W3 between the two corner side faces (7), where 0.1 < W - W3 < 2.

2.

19. The double-sided cutting blade according to claim 18, wherein, When looking down at the major longitudinal side face (41) from the Y-axis direction, the major longitudinal side face (41) has a maximum width W between the major lateral side face (31) and the minor lateral side face (32), and the intersection boundary of the second major longitudinal side face (412) and the sixth major longitudinal side face (416) is closer to the minor lateral side face (32) relative to the Z-axis and has a spacing W1 from the Z-axis, where 0.001 ≤ W1:W ≤ 0.

45.

20. The double-sided cutting blade according to claim 1, characterized in that, In a cross-section perpendicular to the X-axis and parallel to the Y-axis, when looking from the direction of the major lateral side face (31) to the minor lateral side face (32), the third major longitudinal side face (413) successively has a region of gradual increase, a region of remaining unchanged, and a region of gradual decrease.

21. The double-sided cutting blade according to claim 1, characterized in that, The corner side face (7) includes a plurality of first corner side faces (71) and a plurality of fourth corner side faces (74); The cutting edge formed at the intersection of the side surface and the upper end surface (11) includes a main cutting edge (5), and the main cutting edge (5) at least includes: a main cutting edge (51), a main corner cutting edge (52), a secondary cutting edge (53), and a secondary corner cutting edge (54). Among them, the main cutting edge (51) is provided at the intersection of the main lateral side surface (31) and the upper end surface (11), the main corner cutting edge (52) is provided at the intersection of the first corner side surface (71) and the upper end surface (11), the secondary cutting edge (53) is provided at the intersection of the main longitudinal side surface (41) adjacent to one side of the first corner side surface (71) and the upper end surface (11), and the secondary corner cutting edge (54) is provided at the intersection of the fourth corner side surface (74) and the upper end surface (11); Among them, both ends of the main cutting edge (51) are respectively connected to the main corner cutting edge (52) and the secondary corner cutting edge (54); When looking down at the upper end surface (11) from the Z-axis direction, the main cutting edge (51) is convex outward; When looking down at the main lateral side surface (31) from the X-axis direction, the distance between the main cutting edge (51) in the Z-axis direction and the Y-axis first decreases and then increases from the main corner cutting edge (52) to the secondary corner cutting edge (54) direction; The cutting edge also includes a secondary cutting edge (6), and the secondary cutting edge (6) is provided at the intersection of the main longitudinal side surface (41) adjacent to one side of the fourth corner side surface (74) and the upper end surface (11). Both ends of the secondary cutting edge (53) are respectively connected to the main corner cutting edge (52) and the secondary cutting edge (6). When looking down at the main longitudinal side surface (41) from the Y-axis direction, in the direction from the main lateral side surface (31) to the secondary lateral side surface (32), the secondary cutting edge (53) inclines towards a direction closer to the X-axis and has an angle α1 with the X-axis, and the secondary cutting edge (6) has an angle α2 with the X-axis. Among them, 0° < α1 ≤ 35°, 0° ≤ α2 ≤ 30°, and α1 ≥ α2.

22. A cutting tool, characterized in that, Including: A tool body (200) and a cutting insert (100) according to any one of claims 1-21; The upper end surface (11) of the cutting insert (100) is provided with an upper mounting surface (111), and the lower end surface (12) is provided with a lower mounting surface (121); The tool body (200) has at least one insert pocket (201), and the insert pocket (201) includes a fourth longitudinal support surface (2014) and a third support surface (2013). The fourth longitudinal support surface (2014) matches the sixth main longitudinal side surface (416) or the seventh main longitudinal side surface (417), and the third support surface (2013) matches the upper mounting surface (111) or the lower mounting surface (121); The fourth longitudinal support surface (2014) is arranged on the side away from the cutting insert (100) along the rotation axis direction of the tool body (200) and inclines towards the inside of the insert pocket (201).

Images