Cutting inserts and cutting tools

Abstract

The present invention discloses a cutting blade and a cutting tool. The present invention relates to the field of cutting blades. The cutting blade comprises: a cutting portion and a blade body. The blade body has two mounting end faces that are opposite and spaced apart. The blade body also has a connecting side face. The connecting side face is located between the two mounting end faces, and the connecting side face is connected to both mounting end faces. At least one mounting end face is provided with a cutting portion. The cutting portion is located at the edge of the blade body. The connecting side face has a first side face and a second side face that are opposite and spaced apart. At least one of the first side face and the second side face is recessed toward the inside of the blade body or protrudes toward the outside of the blade body. According to the cutting blade of the embodiment of the present invention, the cutting efficiency of the cutting blade is high, and the cutting blade is firmly clamped, which is conducive to improving the stability of the cutting blade during cutting.

Description

Technical Field

[0001] The present invention relates to the field of cutting inserts, in particular to a cutting insert and a cutting tool having the cutting insert. Background Art

[0002] In the related technology, in high-feed cutting processing, the cutting blade needs to withstand a large force. When the existing cutting blade is used for cutting processing with a large cutting depth, the clamping and positioning of the cutting blade is unstable, which can easily cause cutting vibration, loosening of the cutting tool, and the cutting blade flying off the workpiece. In addition, the cutting edge and chip groove of the existing cutting blade are not set reasonably, which may lead to large cutting force, unstable cutting and unsmooth chip removal, thereby reducing the cutting performance of the cutting tool. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a cutting insert, which is firmly clamped and is conducive to improving the stability of the cutting insert during cutting.

[0004] The present invention also provides a cutting tool using the cutting insert.

[0005] According to the first aspect of the present invention, the cutting blade comprises: a cutting portion and a blade body, the blade body having two mounting end faces that are opposite and spaced apart, the blade body further having a connecting side face, the connecting side face being located between the two mounting end faces, and the connecting side face being connected to both mounting end faces, at least one mounting end face being provided with the cutting portion, the cutting portion being located at the edge of the blade body, the connecting side face having a first side face and a second side face that are opposite and spaced apart, at least one of the first side face and the second side face being recessed toward the inside of the blade body or convex toward the outside of the blade body.

[0006] The cutting blade according to an embodiment of the present invention includes: a cutting part and a blade body, the cutting part is located at the edge of the blade body, so that the cutting part can ensure that the cutting force of the cutting blade can act on the workpiece, which is beneficial to improving the cutting efficiency of the cutting blade, and a groove structure or a boss structure is formed on the outer side of the connecting side, which is beneficial to reducing or eliminating the negative impact of unevenness caused by sintering deformation of the complete connecting side, and by forming a groove structure or a boss structure on the connecting side, the cutting blade can be clamped more firmly, which is beneficial to improving the stability of the cutting blade during cutting.

[0007] According to some embodiments of the present invention, at least one of the first side surface and the second side surface includes a plurality of side surface portions, and the plurality of side surface portions are arranged in sequence and connected along the arrangement direction of the two mounting end surfaces, and at least one of the side surface portions is recessed toward the inside of the blade body to form a groove structure on the outer side of the connecting side surface.

[0008] According to some embodiments of the present invention, the plurality of side portions include: a first side portion and a second side portion, the first side portion is connected between one of the mounting end faces and the second side portion, the second side portion is connected between another of the mounting end faces and the first side portion, and both the first side portion and the second side portion are recessed toward the inside of the blade body.

[0009] According to some embodiments of the present invention, an angle α1 is formed between the first side surface and the connected mounting end surface, satisfying the relationship 70°<α1<90°.

[0010] According to some embodiments of the present invention, an angle α2 is formed between the second side surface portion and the connected mounting end surface, satisfying the relationship 70°<α2<90°.

[0011] According to some embodiments of the present invention, at least one of the first side surface and the second side surface includes a plurality of side surface portions, and the plurality of side surface portions are arranged in sequence and connected along the arrangement direction of the two mounting end surfaces, and at least one of the side surface portions protrudes toward the outside of the blade body to form a boss structure on the outside of the connecting side surface.

[0012] According to some embodiments of the present invention, the plurality of side portions include: a first side portion and a second side portion, the first side portion is connected between one of the mounting end faces and the second side portion, the second side portion is connected between another of the mounting end faces and the first side portion, and both the first side portion and the second side portion protrude toward the outside of the blade body.

[0013] According to some embodiments of the present invention, an angle α3 is formed between the first side surface portion and the connected mounting end surface, satisfying the relationship 90°<α3<110°.

[0014] According to some embodiments of the present invention, an angle α4 is formed between the second side surface portion and the connected mounting end surface, satisfying the relationship 90°<α4<110°.

[0015] According to some embodiments of the present invention, an angle β is formed between the first side surface portion and the second side surface portion, satisfying the relationship: 140°<β<180°.

[0016] According to some embodiments of the present invention, along the arrangement direction of the two mounting end surfaces, the blade body has a first center plane, and the first side surface portion and the second side surface portion are symmetrical about the first center plane.

[0017] According to some embodiments of the present invention, the plurality of first side portions include a plurality of first sub-side portions, which are sequentially connected along a direction perpendicular to the arrangement direction of the two mounting end surfaces; the plurality of second side portions include a plurality of second sub-side portions, which are sequentially connected along a direction perpendicular to the arrangement direction of the two mounting end surfaces; the plurality of first sub-side portions and the plurality of second sub-side portions are connected one-to-one; at least two of the first sub-side portions are located in different planes, and / or at least two of the second sub-side portions are located in different planes.

[0018] According to some embodiments of the present invention, the plurality of first side portions include a plurality of first sub-side portions, which are connected in sequence along a direction perpendicular to the arrangement direction of the two mounting end faces; the plurality of second side portions include a plurality of second sub-side portions, which are connected in sequence along a direction perpendicular to the arrangement direction of the two mounting end faces; the plurality of first sub-side portions and the plurality of second sub-side portions are connected in sequence one by one; along the arrangement direction of the plurality of first sub-side portions, the center point of the first sub-side portion located at an even position is closer to the center of the cutting blade than the center point of the first sub-side portion located at an odd position; and / or along the arrangement direction of the plurality of second sub-side portions, the center point of the second sub-side portion located at an even position is closer to the center of the cutting blade than the center point of the second sub-side portion located at an odd position.

[0019] According to some embodiments of the present invention, the connecting side surface also has two third side surfaces, the two third side surfaces are opposite and spaced apart, the connecting side surface also has a plurality of corner side surfaces, the plurality of corner side surfaces are respectively connected between the first side surface and the corresponding third side surfaces, and between the second side surface and the corresponding third side surfaces, the cutting portion is located at the edge position of the blade body, and the cutting portion intersects with the corresponding third side surfaces.

[0020] According to some embodiments of the present invention, at least one of the first side surface and the second side surface is formed with a recessed portion, the recessed portion extends along the arrangement direction of the two mounting end surfaces, and both ends of the recessed portion extend to the two mounting end surfaces respectively, the recessed portion is adjacent to the corresponding corner side surface, and the cutting portion is formed with a material discharge groove, and the material discharge groove is connected to the corresponding recessed portion.

[0021] According to some embodiments of the present invention, at least one of the third side surfaces is perpendicular to the two mounting end surfaces.

[0022] According to some embodiments of the present invention, along the arrangement direction of the first side surface and the second side surface, the maximum spacing distance between the first side surface and the second side surface is W1, and the maximum spacing distance between two opposite corner side surfaces is W2, satisfying the relationship: W1≤W2.

[0023] According to some embodiments of the present invention, the cutting portion is formed with a cutting edge, the cutting edge extends along the corresponding third side edge, the cutting edge includes a buffer edge, a curved edge and an angle edge, and the curved edge is connected between the buffer edge and the angle edge.

[0024] According to some embodiments of the present invention, along the arrangement direction of the two third side surfaces, the orthographic projection length of the buffer edge is smaller than the orthographic projection length of the curved edge.

[0025] According to some embodiments of the present invention, the ratio of the orthographic projection length of the buffer edge to the orthographic projection length of the curved edge is η, which satisfies the relationship: 0.02≤η≤0.4.

[0026] According to some embodiments of the present invention, along the arrangement direction of the first side surface and the second side surface, the blade body has a second center surface, and the curved edge is arranged corresponding to the second center surface.

[0027] According to some embodiments of the present invention, an avoidance section is formed at the intersection of the mounting end face provided with the cutting portion and the corresponding third side face, the avoidance section extends along the edge of the corresponding third side face and is adjacent to the cutting edge, and along the arrangement direction of the two mounting end faces, the height of the avoidance section protruding from the corresponding mounting end face is less than the height of the curved edge protruding from the corresponding mounting end face, and the curved edge is inclined toward the avoidance section.

[0028] According to some embodiments of the present invention, the avoidance section includes a connected flat section and a buffer section, the flat section is coplanar with the corresponding mounting end face, the buffer section protrudes from the corresponding mounting end face, the buffer section is inclined, and the buffer blade is formed in the buffer section.

[0029] The cutting tool according to the second aspect of the present invention comprises: a tool body and the cutting blade described in the above embodiment, wherein the cutting blade is the cutting blade according to any one of claims 1-19, and the cutting blade is fixed to the tool body.

[0030] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0032] Figure 1 is an angled schematic diagram of a cutting insert with a connecting side facing the recess in the insert body according to an embodiment of the present invention;

[0033] Figure 2 is an angled schematic diagram of a cutting insert with a connecting side surface protruding toward the outside of the insert body according to an embodiment of the present invention;

[0034] Figure 3 is a top view of a cutting insert according to an embodiment of the present invention, wherein the connecting side surface is recessed toward the inside of the insert body;

[0035] Figure 4 is an angled schematic diagram of a cutting tool according to an embodiment of the present invention;

[0036] Figure 5 is a bottom view of a cutting tool according to an embodiment of the present invention.

[0037] Reference numerals:

[0038] Cutting insert 1, cutting tool 100,

[0039] The blade body 10,

[0040] Installation end surface 11, avoidance section 111, flat section 1111, buffer section 1112,

[0041] Connecting side surface 12, first side surface 121, second side surface 122, third side surface 123, corner side surface 124,

[0042] Groove structure 131, boss structure 132

[0043] The side surface portion 14, the first side surface portion 141, the first sub-side surface 1411, the second side surface portion 142, the second sub-side surface 1421,

[0044] The recessed portion 15,

[0045] cutting part 20, material discharge groove 21, cutting edge 22, buffer edge 221, curved edge 222, corner edge 223,

[0046] Mounting holes 30,

[0047] The blade body 2 has a bottom placement surface 210 , a main side placement surface 220 , a secondary side placement surface 230 , and a blade placement groove 240 . DETAILED DESCRIPTION

[0048] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0049] Reference below Figure 1-Figure 3 A cutting insert 1 according to an embodiment of the present invention is described, and the cutting insert 1 is provided on a tool body 2 of a cutting tool 100 .

[0050] According to the first embodiment of the present invention, the cutting insert 1 is as follows: Figure 1 As shown, the cutting blade 1 includes: a cutting portion 20 and a blade body 10, the blade body 10 has two mounting end faces 11 that are opposite and spaced apart, the blade body 10 also has a connecting side face 12, the connecting side face 12 is located between the two mounting end faces 11, and the connecting side face 12 is connected to both mounting end faces 11, at least one mounting end face 11 is provided with a cutting portion 20, the cutting portion 20 is located at the edge of the blade body 10, the connecting side face 12 has a first side face 121 and a second side face 122 that are opposite and spaced apart, at least one of the first side face 121 and the second side face 122 is recessed toward the inside of the blade body 10 or protrudes toward the outside of the blade body 10.

[0051] It should be noted that in the related technology, in high-feed cutting processing, the cutting blade needs to withstand a large force. When the existing cutting blade is used for cutting processing with a large cutting depth, the clamping and positioning of the cutting blade is not stable, which can easily cause cutting vibration, loosening of the cutting tool, and the cutting blade flying off the workpiece. In addition, the cutting edge and chip groove of the existing cutting blade are not set reasonably, which may lead to large cutting force, unstable cutting and unsmooth chip removal, thereby reducing the cutting performance of the cutting tool.

[0052] Based on this, the embodiment of the present invention proposes a cutting blade 1, including: a cutting portion 20 and a blade body 10. The cutting portion 20 is used to cut a workpiece during cutting. The cutting portion 20 is arranged on the blade body 10. The blade body 10 has two mounting end faces 11 that are opposite and spaced apart. When the cutting blade 1 is placed in an up-and-down direction, the two mounting end faces 11 are respectively the upper surface and the lower surface of the blade body 10. The present invention is described by taking the cutting blade 1 placed in an up-and-down direction as an example. The blade body 10 can be fixedly installed by the mounting end faces 11, such as Figure 1 As shown, when the blade body 10 is Figure 1 When the direction is set, the height direction of the blade body 10 is Figure 1Z direction in the blade body 10. The blade body 10 also has a connecting side surface 12, and the connecting side surface 12 is located between the two mounting end surfaces 11, and the connecting side surface 12 is connected to both mounting end surfaces 11. A cutting portion 20 is provided on at least one mounting end surface 11, and a cutting portion 20 may be provided on one of the two mounting end surfaces 11, and a cutting portion 20 may also be provided on both mounting end surfaces 11. In the embodiment of the present invention, the present invention is described by taking the example that both mounting end surfaces 11 are provided with a cutting portion 20. As an example, two cutting portions 20 are provided on each mounting end surface 11. The cutting portion 20 is located at the edge position of the blade body 10, so that the cutting portion 20 can act on the workpiece, which is beneficial to improving the cutting efficiency of the cutting blade 1. The cutting portion 20 is provided on both mounting end surfaces 11, so that the cutting blade 1 can achieve double-sided cutting, which is beneficial to improving the practicality of the cutting blade 1.

[0053] The connecting side surface 12 has a first side surface 121 and a second side surface 122 that are relative and spaced apart. The first side surface 121 and the second side surface 122 are both connected to the two mounting end surfaces 11. At least one of the first side surface 121 and the second side surface 122 is recessed toward the inside of the blade body 10, or at least one of the first side surface 121 and the second side surface 122 is protruded toward the outside of the blade body 10. At least one of the first side surface 121 and the second side surface 122 forms an angle with the mounting end surface 11, which may be an acute angle or an obtuse angle. At least one of the first side surface 121 and the second side surface 122 forms a groove structure 131 or a boss structure 132. The groove structure 131 or the boss structure 132 is formed on the connecting side surface 12, which is beneficial to reducing or eliminating the negative impact of unevenness caused by the sintering deformation of the complete connecting side surface 12. By forming the groove structure 131 or the boss structure 132 on the connecting side surface 12, the cutting blade 1 can be clamped more firmly, which is beneficial to improving the stability of the cutting blade 1 during cutting.

[0054] In some embodiments of the present invention, Figure 1 As shown, at least one of the first side surface 121 and the second side surface 122 includes a plurality of side surface portions 14 , and the plurality of side surface portions 14 are arranged in sequence and connected along the arrangement direction of the two mounting end surfaces 11 , and at least one side surface portion 14 is recessed toward the inside of the blade body 10 to form a groove structure 131 on the outer side of the connecting side surface 12 .

[0055] At least one of the first side surface 121 and the second side surface 122 includes a plurality of side surface portions 14, the first side surface 121 may include a plurality of side surface portions 14, or the second side surface 122 may include a plurality of side surface portions 14, or both the first side surface 121 and the second side surface 122 include a plurality of side surface portions 14. The embodiment of the present invention is described by taking the first side surface 121 and the second side surface 122 both including a plurality of side surface portions 14 as an example. The plurality of side surface portions 14 are sequentially arranged and connected along the arrangement direction of the two mounting end surfaces 11 (i.e., the height direction of the blade body 10). When at least one of the first side surface 121 and the second side surface 122 is recessed toward the inside of the blade body 10, at least one side surface portion 14 is recessed toward the inside of the blade body 10, and an angle is formed between the side surface portion 14 recessed toward the inside of the blade body 10 and the adjacent side surface portion 14, so that a groove structure 131 is formed on the outside of the connecting side surface 12. The present invention is described by taking the plurality of side surface portions 14 recessed toward the inside of the blade body 10 as an example. By providing a plurality of side portions 14 , a groove structure 131 can be formed on the connecting side surface 12 , so that the cutting insert 1 can be clamped more firmly, which is beneficial to improving the stability of the cutting insert 1 during cutting.

[0056] In some embodiments of the present invention, the plurality of side portions 14 include: a first side portion 141 and a second side portion 142, the first side portion 141 is connected between one mounting end surface 11 and the second side portion 142, the second side portion 142 is connected between another mounting end surface 11 and the first side portion 141, and both the first side portion 141 and the second side portion 142 are recessed toward the inside of the blade body 10.

[0057] The plurality of side portions 14 include a first side portion 141 and a second side portion 142, which are arranged and connected in sequence along the height direction of the blade body 10, the first side portion 141 is connected between one mounting end face 11 and the second side portion 142, and the second side portion 142 is connected between another mounting end face 11 and the first side portion 141. As an example, the first side portion 141 and the second side portion 142 are both recessed toward the inside of the blade body 10, and an angle is formed between the first side portion 141 and the second side portion 142, which may be an obtuse angle, a right angle, etc., and a groove structure 131 is formed between the first side portion 141 and the second side portion 142. The first side 121 and the second side 122 both include a plurality of side portions 14, and the groove structure 131 is formed on the first side 121 and the second side 122, so that the cutting blade 1 can further achieve a stable clamping effect, which is conducive to improving the stability and safety of the cutting blade 1.

[0058] In some embodiments of the present invention, an angle α1 is formed between the first side surface portion 141 and the connected mounting end surface 11 , satisfying the relationship 70°<α1<90°.

[0059] The mounting end face 11 connected to the first side face 141 is recorded as the first end face. When the first side face 141 is recessed toward the blade body 10, illustratively, the angle value between the first side face 141 and the first end face can be 77°, 82°, 87°, etc. The angle value between the first side face 141 and the first end face can be between 70°-90°. Any value excluding the endpoint value is the angle value between the first side face 141 and the first end face that can be selected by the present invention. If the angle value between the first side face 141 and the first end face is less than or equal to 70°, the connection strength between the first side face 141 and the first end face is affected, and the supporting effect of the first side face 141 on the first end face is affected. If the angle value between the first side face 121 and the first end face is equal to 90°, so that the first side face 141 is perpendicular to the first end face, the first side face 141 cannot form a groove structure 131 with the second side face 142, which affects the stability of the clamping of the cutting blade 1, and affects the stability and safety of the working of the cutting blade 1. Therefore, the angle between the first side surface portion 141 and the first end surface is between 70° and 90°, which can further optimize the structure of the connecting side surface 12, further improve the stability of the clamping of the cutting blade 1, and also optimize the radial cutting angle of the cutting blade 1, thereby obtaining a lower radial cutting force.

[0060] In some embodiments of the present invention, an angle α2 is formed between the second side surface portion 142 and the connected mounting end surface 11 , satisfying the relationship 70°<α2<90°.

[0061] The mounting end face 11 connected to the second side face 142 is recorded as the second end face. When the second side face 142 is recessed toward the blade body 10, illustratively, the angle value between the second side face 142 and the second end face can be 77°, 82°, 87°, etc., and the angle value between the second side face 142 and the second end face can be between 70°-90°. Any value excluding the endpoint value is the angle value between the second side face 142 and the second end face that is optional in the present invention. If the angle value between the second side face 142 and the second end face is less than or equal to 70°, the connection strength between the second side face 142 and the second end face is affected, and the supporting effect of the second side face 142 on the second end face is affected. If the angle value between the second side face 122 and the second end face is equal to 90°, so that the second side face 142 is perpendicular to the second end face, the second side face 142 cannot form a groove structure 131 with the second side face 142, which affects the stability of the installation of the cutting blade 1, and affects the stability and safety of the working of the cutting blade 1. Therefore, the angle between the second side surface portion 142 and the second end surface is between 70° and 90°, which can further optimize the structure of the connecting side surface 12, further improve the stability of the clamping of the cutting blade 1, and also optimize the radial cutting angle of the cutting blade 1, thereby obtaining a lower radial cutting force.

[0062] In some embodiments of the present invention, Figure 2 As shown, at least one of the first side surface 121 and the second side surface 122 includes a plurality of side surface portions 14 , which are arranged in sequence and connected along the arrangement direction of the two mounting end surfaces 11 , and at least one side surface portion 14 protrudes toward the outside of the blade body 10 to form a boss structure 132 on the outside of the connecting side surface 12 .

[0063] At least one of the first side surface 121 and the second side surface 122 includes a plurality of side surface portions 14, the first side surface 121 may include a plurality of side surface portions 14, or the second side surface 122 may include a plurality of side surface portions 14, or both the first side surface 121 and the second side surface 122 include a plurality of side surface portions 14. The embodiment of the present invention is described by taking the first side surface 121 and the second side surface 122 both including a plurality of side surface portions 14 as an example. The plurality of side surface portions 14 are sequentially arranged and connected along the arrangement direction of the two mounting end surfaces 11 (i.e., the height direction of the blade body 10). When at least one of the first side surface 121 and the second side surface 122 protrudes toward the outside of the blade body 10, at least one side surface portion 14 protrudes toward the outside of the blade body 10, and an angle is formed between the side surface portion 14 protruding toward the outside of the blade body 10 and the adjacent side surface portion 14, so that a boss structure 132 is formed on the outside of the connecting side surface 12. The present invention is described by taking the plurality of side surface portions 14 protruding toward the outside of the blade body 10 as an example. By providing a plurality of side portions 14 , a boss structure 132 can be formed on the connecting side surface 12 , so that the cutting insert 1 can be clamped more firmly, which is beneficial to improving the stability of the cutting insert 1 during cutting.

[0064] In some embodiments of the present invention, the plurality of side portions 14 include: a first side portion 141 and a second side portion 142, the first side portion 141 is connected between one mounting end surface 11 and the second side portion 142, the second side portion 142 is connected between another mounting end surface 11 and the first side portion 141, and both the first side portion 141 and the second side portion 142 protrude toward the outside of the blade body 10.

[0065] The plurality of side portions 14 include a first side portion 141 and a second side portion 142, which are arranged and connected in sequence along the height direction of the blade body 10, the first side portion 141 is connected between one mounting end face 11 and the second side portion 142, and the second side portion 142 is connected between another mounting end face 11 and the first side portion 141. As another example, the first side portion 141 and the second side portion 142 both protrude toward the outside of the blade body 10, and an angle is formed between the first side portion 141 and the second side portion 142, which may be an obtuse angle, a right angle, etc., and a boss structure 132 is formed between the first side portion 141 and the second side portion 142. The first side 121 and the second side 122 both include a plurality of side portions 14, and the boss structure 132 is formed on the first side 121 and the second side 122, so that the cutting blade 1 can further achieve a stable clamping effect, which is conducive to improving the stability and safety of the cutting blade 1.

[0066] In some embodiments of the present invention, an angle α3 is formed between the first side surface portion 141 and the connected mounting end surface 11 , satisfying the relationship 90°<α3<110°.

[0067] The mounting end face 11 connected to the first side face portion 141 is recorded as the first end face. When the first side face portion 141 protrudes toward the outside of the blade body 10, illustratively, the angle value between the first side face portion 141 and the first end face can be 97°, 102°, 107°, etc. The angle value between the first side face portion 141 and the first end face can be between 90°-110°. Any value excluding the endpoint value is an optional angle value between the first side face portion 141 and the first end face of the present invention. If the angle value between the first side face portion 141 and the first end face is greater than or equal to 110°, it affects the connection strength between the first side face portion 141 and the first end face, and affects the supporting effect of the first side face portion 141 on the first end face. If the angle between the first side surface 121 and the first end surface is equal to 90°, so that the first side surface portion 141 is perpendicular to the first end surface, the first side surface portion 141 cannot form the boss structure 132 with the second side surface portion 142, which affects the stability of the clamping of the cutting insert 1, and affects the stability and safety of the operation of the cutting insert 1. Therefore, the angle between the first side surface portion 141 and the first end surface is between 90° and 110°, which can further optimize the structure of the connecting side surface 12, further improve the stability of the clamping of the cutting insert 1, and also optimize the radial cutting angle of the cutting insert 1, thereby obtaining a lower radial cutting force.

[0068] In some embodiments of the present invention, an angle α4 is formed between the second side surface portion 142 and the connected mounting end surface 11 , satisfying the relationship 90°<α4<110°.

[0069] The mounting end face 11 connected to the second side face 142 is recorded as the second end face. When the second side face 142 protrudes toward the outside of the blade body 10, illustratively, the angle value between the second side face 142 and the second end face can be 97°, 102°, 107°, etc. The angle value between the second side face 142 and the second end face can be between 90°-110°. Any value excluding the endpoint value is the angle value between the second side face 142 and the second end face that can be selected by the present invention. If the angle value between the second side face 142 and the second end face is greater than or equal to 110°, the connection strength between the second side face 142 and the second end face is affected, and the supporting effect of the second side face 142 on the second end face is affected. If the angle value between the second side face 122 and the second end face is equal to 90°, so that the second side face 142 is perpendicular to the second end face, the second side face 142 cannot form a boss structure 132 with the second side face 142, which affects the stability of the installation of the cutting blade 1, and affects the stability and safety of the working of the cutting blade 1. Therefore, the angle between the second side surface portion 142 and the second end surface is between 90° and 110°, which can further optimize the structure of the connecting side surface 12, further improve the stability of the clamping of the cutting blade 1, and also optimize the radial cutting angle of the cutting blade 1, thereby obtaining a lower radial cutting force.

[0070] In some embodiments of the present invention, an angle β is formed between the first side surface portion 141 and the second side surface portion 142 , satisfying the relationship: 140°<β<180°.

[0071] Exemplarily, the angle between the first side portion 141 and the second side portion 142 may be 145°, 160°, 175°, etc. The angle between the first side portion 141 and the second side portion 142 may be within the range of 140°-180°. Any value, excluding the endpoint value, is an optional angle between the first side portion 141 and the second side portion 142 of the present invention. If the angle between the first side portion 141 and the second side portion 142 is ≤140°, the connection strength between the first side portion 141 and the second side portion 142 and the stability of the connection structure are affected, and the support capacity of the first side portion 141 and the second side portion 142 for the mounting end face 11 is affected. If the angle between the first side portion 141 and the second side portion 142 is equal to 180°, the groove structure 131 cannot be formed between the first side portion 141 and the second side portion 142, which affects the stability of the clamping of the cutting insert 1. Therefore, the angle between the first side surface portion 141 and the second side surface portion 142 is between 140° and 180°, which can improve the structural strength of the groove structure 131 formed between the first side surface portion 141 and the second side surface portion 142, thereby further improving the stability of the clamping of the cutting insert 1. When the angle β between the first side surface portion 141 and the second side surface portion 142 is reasonably selected, the probability of the partial self-locking function of the cutting insert 1 can be improved.

[0072] In some embodiments of the present invention, along the arrangement direction of the two mounting end faces 11, the blade body 10 has a first center plane, and the first side surface portion 141 and the second side surface portion 142 are symmetrical about the first center plane. The first center plane is located between the first side surface portion 141 and the second side surface portion 142, the angle between the first side surface portion 141 and the first center plane is α5, and the angle between the second side surface portion 142 and the first center plane is α6, α5 is equal to α6, and by setting the first side surface portion 141 and the second side surface portion 142 symmetrical about the first center plane, the first side surface portion 141 and the second side surface portion 142 can bear the load in a balanced manner, thereby improving the stability of the structure of the connecting side surface 12, thereby improving the stability of the structure of the cutting blade 1.

[0073] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the multiple first side portions 141 include multiple first sub-side portions 1411, and the multiple first sub-side portions 1411 are connected in sequence along a direction perpendicular to the arrangement direction of the two mounting end surfaces 11; the multiple second side portions 142 include multiple second sub-side portions 1421, and the multiple second sub-side portions 1421 are connected in sequence along a direction perpendicular to the arrangement direction of the two mounting end surfaces 11; the multiple first sub-side portions 1411 and the multiple second sub-side portions 1421 are connected in a one-to-one correspondence; at least two first sub-side portions 1411 are located in different planes, and / or at least two second sub-side portions 1421 are located in different planes.

[0074] The plurality of first side surfaces 141 include a plurality of first sub-side surfaces 1411. The plurality of first sub-side surfaces 1411 are sequentially connected along a direction perpendicular to the arrangement direction of the two mounting end surfaces 11. The plurality of first sub-side surfaces 1411 can be integrally formed. Figure 1 When the mounting direction is placed, the direction perpendicular to the arrangement direction of the two mounting end faces 11 is Figure 1 The plurality of second side surfaces 142 include a plurality of second sub-side surfaces 1421, which are sequentially connected in a direction perpendicular to the arrangement direction of the two mounting end surfaces 11, and the plurality of second sub-side surfaces 1421 can be integrally formed. Along the height direction of the cutting blade 1, the plurality of first sub-side surfaces 1411 and the plurality of second sub-side surfaces 1421 are connected one by one, and each first sub-side surface 1411 can be symmetrical with the corresponding second sub-side surface 1421 about the first center plane.

[0075] At least two first sub-side surfaces 1411 are located in different planes, or at least two second sub-side surfaces 1421 are located in different planes, or at least two first sub-side surfaces 1411 and at least two second sub-side surfaces 1421 are located in different planes. In the embodiment of the present invention, the present invention is described by taking at least two first sub-side surfaces 1411 and at least two second sub-side surfaces 1421 as examples of being located in different planes. An angle is formed between at least two adjacent first sub-side surfaces 1411, and an angle is formed between at least two adjacent second sub-side surfaces 1421, which can further optimize the structure of the first side surface 121 and the second side surface 122, thereby improving the stability of the cutting blade 1 when clamped, and reducing the influence of the cutting force on the fixing of the cutting blade 1.

[0076] In some embodiments of the present invention, the multiple first side portions 141 include multiple first sub-side portions 1411, and the multiple first sub-side portions 1411 are connected in sequence along a direction perpendicular to the arrangement direction of the two mounting end surfaces 11; the multiple second side portions 142 include multiple second sub-side portions 1421, and the multiple second sub-side portions 1421 are connected in sequence along a direction perpendicular to the arrangement direction of the two mounting end surfaces 11; the multiple first sub-side portions 1411 and the multiple second sub-side portions 1421 are connected one by one; along the arrangement direction of the multiple first sub-side portions 1411, the center point of the first sub-side portion 1411 located at an even position is closer to the center of the cutting blade 1 than the center point of the first sub-side portion 1411 located at an odd position; and / or along the arrangement direction of the multiple second sub-side portions 1421, the center point of the second sub-side portion 1421 located at an even position is closer to the center of the cutting blade 1 than the center point of the second sub-side portion 1421 located at an odd position.

[0077] The plurality of first side portions 141 include a plurality of first sub-side portions 1411, which are connected in sequence along a direction perpendicular to the arrangement direction of the two mounting end faces 11, and the plurality of first sub-side portions 1411 can be integrally formed. The plurality of second side portions 142 include a plurality of second sub-side portions 1421, which are connected in sequence along a direction perpendicular to the arrangement direction of the two mounting end faces 11, and the plurality of second sub-side portions 1421 can be integrally formed. Along the height direction of the cutting blade 1, the plurality of first sub-side portions 1411 and the plurality of second sub-side portions 1421 are connected in a one-to-one correspondence, and each first sub-side portion 1411 can be symmetrical with the corresponding second sub-side portion 1421 about the first center plane.

[0078] Along the arrangement direction of the multiple first sub-side surfaces 1411, the center point of the first sub-side surface 1411 located at an even position is closer to the center of the cutting blade 1 than the center point of the first sub-side surface 1411 located at an odd position, or, along the arrangement direction of the multiple second sub-side surfaces 1421, the center point of the second sub-side surface 1421 located at an even position is closer to the center of the cutting blade 1 than the center point of the second sub-side surface 1421 located at an odd position, or, along the arrangement direction of the multiple first sub-side surfaces 1411 and along the arrangement direction of the multiple second sub-side surfaces 1421, the center point of the first sub-side surface 1411 located at an even position is closer to the center of the cutting blade 1 than the center point of the first sub-side surface 1411 located at an odd position, and the center point of the second sub-side surface 1421 located at an even position is closer to the center of the cutting blade 1 than the center point of the second sub-side surface 1421 located at an odd position. The embodiment of the present invention is described by taking as an example that along the arrangement direction of multiple first sub-side surfaces 1411 and along the arrangement direction of multiple second sub-side surfaces 1421, the center point of the first sub-side surface 1411 located at an even position is closer to the center of the cutting blade 1 than the center point of the first sub-side surface 1411 located at an odd position, and the center point of the second sub-side surface 1421 located at an even position is closer to the center of the cutting blade 1 than the center point of the second sub-side surface 1421 located at an odd position.

[0079] Along the arrangement direction of the plurality of first sub-side surfaces 1411, the first sub-side surfaces 1411 located at odd positions are located in the same plane, and the first sub-side surfaces 1411 located at even positions are located in the same plane. Along the arrangement direction of the plurality of second sub-side surfaces 1421, the second sub-side surfaces 1421 located at odd positions are located in the same plane, and the second sub-side surfaces 1421 located at even positions are located in the same plane. As an example, the first side portion 141 has three adjacent first sub-sides 1411, and the second side portion 142 has three adjacent second sub-sides 1421. The center point of the first sub-side 1411 located at an even position is closer to the center of the cutting blade 1 than the center point of the first sub-side 1411 located at an odd position, and the center point of the second sub-side 1421 located at an even position is closer to the center of the cutting blade 1 than the center point of the second sub-side 1421 located at an odd position. By specifically setting the specific distribution of the first sub-side 1411 and the second sub-side 1421, the stability of the connecting side 12 can be further optimized, the influence of the cutting force on the support of the cutting blade 1 can be dispersed or weakened, and at the same time, the adverse effects of manufacturing errors on the clamping of the cutting blade 1 can be weakened or eliminated.

[0080] In some embodiments of the present invention, Figure 1 and Figure 2As shown, the connecting side 12 also has two third sides 123, which are opposite and spaced apart. The connecting side 12 also has a plurality of corner sides 124, which are respectively connected between the first side 121 and the corresponding third side 123, and between the second side 122 and the corresponding third side 123. The cutting portion 20 is located at the edge of the blade body 10, and the cutting portion 20 intersects with the corresponding third side 123.

[0081] The connecting side surface 12 also has two third side surfaces 123, the two third side surfaces 123 are opposite and spaced apart, the two third side surfaces 123 are both arranged between the two mounting end surfaces 11, and the two third side surfaces 123 are arranged in a direction perpendicular to the arrangement direction of the first side surface 121 and the second side surface 122. The connecting side surface 12 also has a plurality of corner side surfaces 124, the plurality of corner side surfaces 124 are respectively connected between the first side surface 121 and the corresponding third side surface 123, between the second side surface 122 and the corresponding third side surface 123, and both sides of each third side surface 123 are provided with corner side surfaces 124, the corner side surfaces 124 smoothly connect the first side surface 121 and the corresponding third side surface 123, and the corner side surfaces 124 smoothly connect the second side surface 122 and the corresponding third side surface 123, thereby reducing the risk of collision between the cutting insert 1 and the workpiece during cutting. The cutting portion 20 is located at the edge of the blade body 10, and the cutting portion 20 is provided on both mounting end faces 11. The cutting portion 20 intersects with the corresponding third side surface 123. The third side surface 123 can have an arc-shaped surface roughly located in the middle of the third side surface 123, and the arc-shaped surface protrudes toward the outside of the blade body 10, so that the cutting blade 1 can have a higher feed rate when performing cutting processing with a small cutting depth, thereby obtaining higher cutting efficiency.

[0082] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, at least one of the first side surface 121 and the second side surface 122 is formed with a recessed portion 15, the recessed portion 15 extends along the arrangement direction of the two mounting end surfaces 11, and both ends of the recessed portion 15 extend to the two mounting end surfaces 11 respectively, the recessed portion 15 is adjacent to the corresponding corner side surface 124, and the cutting portion 20 is formed with a material discharge groove 21, which is connected to the corresponding recessed portion 15.

[0083] At least one of the first side surface 121 and the second side surface 122 is formed with a recessed portion 15, the first side surface 121 may be formed with a recessed portion 15, the second side surface 122 may be formed with a recessed portion 15, and both the first side surface 121 and the second side surface 122 may be formed with a recessed portion 15. In the embodiment of the present invention, the present invention is described by taking the recessed portion 15 formed on both the first side surface 121 and the second side surface 122 as an example. There may be multiple recessed portions 15, and the first side surface 121 and the second side surface 122 are both formed with a recessed portion 15, the recessed portion 15 is recessed toward the inside of the blade body 10, and the recessed portion 15 extends along the arrangement direction of the two mounting end surfaces 11, and the two ends of the recessed portion 15 extend to the two mounting end surfaces 11 respectively. The recessed portion 15 is adjacent to the corresponding corner side surface 124, and the cutting portion 20 is formed with a material discharge groove 21, which is used to discharge chips generated during cutting. The material discharge groove 21 is connected to the corresponding recessed portion 15, and the recessed portion 15 provides an effective space guarantee for the smooth discharge of chips when the cutting blade 1 performs deep cutting.

[0084] In some embodiments of the present invention, at least one third side surface 123 is perpendicular to the two mounting end surfaces 11 .

[0085] The cutting portion 20 intersects with the corresponding third side surface 123, and the cutting portion 20 is provided on both mounting end surfaces 11. At least one third side surface 123 is perpendicular to the two mounting end surfaces 11, so that the cutting blade 1 can realize a double-sided negative cutting unit, and can realize double-sided processing of the workpiece by the cutting blade 1, thereby reducing the processing time and cost, which is conducive to improving production efficiency, and can enable the cutting blade 1 to meet the requirements of high cutting efficiency.

[0086] In some embodiments of the present invention, Figure 3 As shown, along the arrangement direction of the first side surface 121 and the second side surface 122 , the maximum spacing distance between the first side surface 121 and the second side surface 122 is W1, and the maximum spacing distance between two opposite corner side surfaces 124 is W2, satisfying the relationship: W1≤W2.

[0087] By setting the maximum spacing distance W1 between the first side surface 121 and the second side surface 122 to be less than or equal to the maximum spacing distance W2 between the two opposite corner side surfaces 124, the cutting blade 1 can be separated into a cutting area and a non-cutting area, which is beneficial to provide a reasonable side chip accommodating and chip removal space for the cutting blade 1 when performing large cutting depth or groove cutting. If the maximum spacing distance W1 between the first side surface 121 and the second side surface 122 is greater than the maximum spacing distance W2 between the two opposite corner side surfaces 124, the chip removal effect of the cutting blade 1 during cutting is affected.

[0088] In some embodiments of the present invention, Figure 1-Figure 3As shown, the cutting portion 20 is formed with a cutting edge 22 extending along the edge of the corresponding third side surface 123 . The cutting edge 22 includes a buffer edge 221 , a curved edge 222 and an angle edge 223 . The curved edge 222 is connected between the buffer edge 221 and the angle edge 223 .

[0089] The cutting portion 20 intersects with the corresponding third side surface 123, and the cutting portion 20 is formed with a cutting edge 22, which is in direct contact with the workpiece and removes material from the workpiece, and extends along the edge of the corresponding third side surface 123. The cutting edge 22 includes a buffer edge 221, a curved edge 222, and an angle edge 223, and the buffer edge 221, the curved edge 222, and the angle edge 223 are connected along the edge of the corresponding third side surface 123. The curved edge 222 can be constructed as a cutting edge in a curved shape, and the curved edge 222 can improve the cutting performance of the cutting blade 1 when cutting hard materials or difficult-to-process materials. The curved edge 222 helps to reduce vibration during the cutting process, thereby improving the working stability of the cutting blade 1. The buffer edge 221 can reduce vibration during the cutting process and improve cutting stability. The buffer edge 221 can also reduce the risk of the curved edge 222 being directly impacted by the cutting force, thereby extending the service life of the cutting blade 1. The corner edge 223 can remove material more effectively, help improve cutting efficiency, and help improve processing accuracy. According to the processing requirements of the workpiece, the cutting edge 22 can be reasonably arranged so that the cutting blade 1 can have the advantages of small cutting force, stable cutting and smooth chip removal, thereby improving the cutting performance of the cutting blade 1.

[0090] In some embodiments of the present invention, along the arrangement direction of the two third side surfaces 123, the orthographic projection length of the buffer edge 221 is less than the orthographic projection length of the curved edge 222. The curved edge 222 plays a major role in the cutting edge 22. The orthographic projection length of the curved edge 222 is usually longer, so that the contact area between the curved edge 222 and the workpiece is larger to ensure effective cutting action and material removal rate. The orthographic projection length of the buffer edge 221 is less than the orthographic projection length of the curved edge 222, which can reduce the contact area between the buffer edge 221 and the workpiece, thereby reducing cutting force and vibration, thereby improving the stability of the cutting blade 1 during cutting. The buffer edge 221 can also protect the curved edge 222, thereby extending the service life of the cutting blade 1.

[0091] In some embodiments of the present invention, the ratio of the orthographic projection length of the buffer edge 221 to the orthographic projection length of the curved edge 222 is η, which satisfies the relationship: 0.02≤η≤0.4.

[0092] The orthographic projection length of the buffer blade 221 is smaller than the orthographic projection length of the curved cutting edge 22. For example, the ratio of the orthographic projection length of the buffer blade 221 to the orthographic projection length of the curved cutting edge 222 can be 0.02, 0.1, 0.2, 0.3, 0.4, etc. The ratio of the orthographic projection length of the buffer blade 221 to the orthographic projection length of the curved cutting edge 222 can be in the range of 0.02-0.4. Any value including the endpoint value is the ratio of the orthographic projection length of the buffer blade 221 to the orthographic projection length of the curved cutting edge 222 that can be selected in the present invention. If the ratio of the orthographic projection length of the buffer blade 221 to the orthographic projection length of the curved cutting edge 222 is greater than 0.4, it may affect the formation and discharge of chips, which may cause chip blockage or unsmoothness, affecting the processing quality. If the ratio of the orthographic projection length of the buffer blade 221 to the orthographic projection length of the curved cutting edge 222 is less than 0.02, it may make the cutting process more unstable, prone to vibration, and affect the quality of the processed surface. Therefore, the ratio of the orthographic projection length of the buffer edge 221 to the orthographic projection length of the curved edge 222 is between 0.02 and 0.4. When η approaches 0.02, a higher cutting feed can be met when performing a small cutting depth, and at the same time, a higher surface quality can be achieved. When η approaches 0.4, it can maximize the protection of the curved edge 222 while better providing a wider space for chip flow.

[0093] In some embodiments of the present invention, along the arrangement direction of the first side surface 121 and the second side surface 122, the blade body 10 has a second center plane, and the curved edge 222 is arranged corresponding to the second center plane. The second center plane is perpendicular to the first center plane, and the curved edge 222 is arranged corresponding to the second center plane to balance the cutting force, so as to ensure that the load on both sides of the cutting process is balanced, reduce vibration, and improve processing accuracy, thereby extending the life of the cutting blade 1 and improving processing efficiency.

[0094] In some embodiments of the present invention, an avoidance section 111 is formed at the intersection of the mounting end face 11 provided with the cutting portion 20 and the corresponding third side face 123. The avoidance section 111 extends along the edge of the corresponding third side face 123 and is adjacent to the cutting edge 22. Along the arrangement direction of the two mounting end faces 11, the height of the avoidance section 111 protruding from the corresponding mounting end face 11 is less than the height of the curved edge 222 protruding from the corresponding mounting end face 11, and the curved edge 222 is inclined toward the avoidance section 111.

[0095] The intersection of the mounting end surface 11 with the cutting portion 20 and the corresponding third side surface 123 forms an avoidance section 111, which can effectively implement large-angle slope cutting and reasonably separate the cutting area from the non-cutting area. The cutting edge 22 extends along the edge of the third side surface 123, and the avoidance section 111 extends along the edge of the corresponding third side surface 123 and is adjacent to the cutting edge 22. Along the arrangement direction of the two mounting end faces 11, the height of the avoidance section 111 protruding from the corresponding mounting end face 11 is less than the height of the curved blade 222 protruding from the corresponding mounting end face 11. The height of the avoidance section 111 protruding from the corresponding mounting end face 11 may be zero, or the height of a portion of the avoidance section 111 protruding from the corresponding mounting end face 11 is zero, or the avoidance section 111 protrudes from the corresponding mounting end face 11. The present invention is explained by taking the example that the height of a portion of the avoidance section 111 protruding from the corresponding mounting end face 11 is zero. The curved blade 222 protrudes from the corresponding mounting end face 11, and the avoidance section 111 is lower than the curved blade 222, thereby reducing the influence of the avoidance section 111 on the curved blade 222 during cutting. The curved edge 222 is inclined toward the avoidance section 111 . The inclined curved edge 222 can obtain low cutting force, which is beneficial to realizing efficient cutting and slope cutting processing.

[0096] In some embodiments of the present invention, Figure 1-Figure 3 As shown, the avoidance section 111 includes a connected flat section 1111 and a buffer section 1112 , the flat section 1111 is coplanar with the corresponding installation end surface 11 , the buffer section 1112 protrudes from the corresponding installation end surface 11 , the buffer section 1112 is inclined, and the buffer blade 221 is formed in the buffer section 1112 .

[0097] The avoidance section 111 includes a connected flat section 1111 and a buffer section 1112, the flat section 1111 and the buffer section 1112 are integrally formed, the flat section 1111 can reduce vibration during the cutting process, the flat section 1111 provides a smooth transition area, which helps to reduce the probability of direct impact between the cutting edge 22 and the workpiece surface, and the flat section 1111 can prevent the cutting blade 1 from scratching or damaging the workpiece surface during the avoidance process, thereby extending the service life of the cutting blade 1. The buffer section 1112 protrudes from the corresponding mounting end face 11, and the buffer section 1112 can absorb the impact and vibration generated during the cutting process, reduce the vibration transmitted to the cutting blade 1 and the machine tool, and thus improve the stability of the processing. The buffer section 1112 is inclined and can connect the flat section 1111 and the curved blade 222. The buffer section 1112 is inclined toward the flat section 1111. The buffer blade 221 is formed on the buffer section 1112. The buffer blade 221 on the buffer section 1112 can reduce vibration during cutting and improve cutting stability.

[0098] The cutting tool 100 according to the second embodiment of the present invention comprises: a tool body 2 and the cutting blade 1 in the above embodiment, wherein the cutting blade 1 is fixed to the tool body 2 .

[0099] The cutting tool 100 according to an embodiment of the present invention is as follows: Figure 4 and Figure 5 As shown, the cutting tool 100 includes a tool body 2 and a cutting blade 1, the cutting blade 1 is formed with at least a first side surface 141, the tool body 2 has a blade placement groove 240 for placing the cutting blade 1, and the tool body 2 may be provided with a plurality of cutting blades 1. As an example, the blade placement groove 240 may include: a bottom placement surface 210, a main side placement surface 220, and a secondary side placement surface 230. The bottom placement surface 210 may be constructed as a plane or a substantially plane. The bottom placement surface 210 may be provided with a screw hole. The cutting blade is formed with a mounting hole 30. The bottom placement surface 210 may be assembled with the mounting end surface 11. The screw is passed through the mounting hole 30 and assembled with the screw hole to achieve a fixed connection between the cutting blade 1 and the tool body 2. The cutting blade 1 is fixed to the tool body 2. The main side placement surface 220 may have a mating surface opposite to the first side surface 141 or the second side surface 142, and the secondary side placement surface 230 may be connected to the third side surface 123. The matching surface and the bottom placement surface 210 form a certain angle γ, 70≤γ<115°.

[0100] Exemplarily, the angle between the mating surface and the bottom placement surface 210 can be 70°, 90°, 100°, or 115°. The angle between the mating surface and the bottom placement surface 210 can be in the range of 70°-115°. Any value, including the endpoint value, is an optional angle between the mating surface and the bottom placement surface 210 of the present invention. If the angle between the mating surface and the bottom placement surface 210 is less than 70°, the connection between the mating surface and the connecting side surface 12 protruding toward the outside of the blade body 10 is affected, the stability of the cutting blade 1 being set on the tool body 2 is affected, and the stability and safety of the cutting tool 100 are affected. If the angle between the mating surface and the bottom placement surface 210 is greater than 115°, the connection between the mating surface and the connecting side surface 12 recessed toward the inside of the blade body 10 is affected, the stability of the cutting blade 1 being set on the tool body 2 is affected, and the stability and safety of the cutting tool 100 are affected. Therefore, the angle between the mating surface and the bottom placement surface 210 is between 70° and 115°, which can improve the installation stability of the cutting insert 1 and improve the working stability and safety of the cutting tool 100 .

[0101] Other structures and operations of the cutting insert 1 and the cutting tool 100 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0102] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0103] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A cutting insert, characterized in that: include: A cutting portion (20) and a blade body (10), wherein the blade body (10) has two mounting end faces (11) that are opposite and spaced apart from each other, and the blade body (10) further has a connecting side face (12), wherein the connecting side face (12) is located between the two mounting end faces (11), and the connecting side face (12) is connected to both mounting end faces (11), and at least one of the mounting end faces (11) is provided with the cutting portion (20), and the cutting portion (20) is located at an edge of the blade body (10), and the connecting side face (12) has a first side face (121) and a second side face (122) that are opposite and spaced apart from each other, and at least one of the first side face (121) and the second side face (122) is recessed toward the inside of the blade body (10) or protrudes toward the outside of the blade body (10); At least one of the first side surface (121) and the second side surface (122) comprises a plurality of side surface portions (14), and the plurality of side surface portions (14) are sequentially arranged and connected along an arrangement direction of the two mounting end surfaces (11); The plurality of side surfaces (14) include: a first side surface (141) and a second side surface (142), wherein the first side surface (141) is connected between one of the mounting end surfaces (11) and the second side surface (142), and the second side surface (142) is connected between another of the mounting end surfaces (11) and the first side surface (141); The first side surface portion (141) comprises a plurality of first sub-side surfaces (1411), the plurality of first sub-side surfaces (1411) are sequentially connected along a direction perpendicular to the arrangement direction of the two mounting end surfaces (11), the second side surface portion (142) comprises a plurality of second sub-side surfaces (1421), the plurality of second sub-side surfaces (1421) are sequentially connected along a direction perpendicular to the arrangement direction of the two mounting end surfaces (11), and the plurality of first sub-side surfaces (1411) and the plurality of second sub-side surfaces (1421) are connected in a one-to-one correspondence; Along the arrangement direction of the plurality of first sub-side surfaces (1411), the center point of the first sub-side surface (1411) located at an even-numbered position is closer to the center of the cutting blade (1) than the center point of the first sub-side surface (1411) located at an odd-numbered position; and / or Along the arrangement direction of the plurality of second sub-side surfaces (1421), the center point of the second sub-side surface (1421) located at an even-numbered position is closer to the center of the cutting blade (1) than the center point of the second sub-side surface (1421) located at an odd-numbered position.

2. The cutting insert according to claim 1, characterized in that At least one of the side surfaces (14) is recessed toward the blade body (10) to form a groove structure (131) outside the connecting side surface (12).

3. The cutting insert according to claim 2, characterized in that The first side surface portion (141) and the second side surface portion (142) are both recessed toward the inside of the blade body (10).

4. The cutting insert according to claim 3, characterized in that An included angle α1 is formed between the first side surface portion (141) and the connected mounting end surface (11), satisfying the relationship 70°<α1<90°.

5. The cutting insert according to claim 3, characterized in that An included angle α2 is formed between the second side surface portion (142) and the connected mounting end surface (11), satisfying the relationship 70°<α2<90°.

6. The cutting insert according to claim 1, characterized in that At least one of the side surfaces (14) protrudes toward the outside of the blade body (10) to form a boss structure (132) on the outside of the connecting side surface (12).

7. The cutting insert according to claim 6, characterized in that The plurality of side portions (14) include: a first side portion (141) and a second side portion (142), wherein the first side portion (141) is connected between one mounting end surface (11) and the second side portion (142), and the second side portion (142) is connected between another mounting end surface (11) and the first side portion (141), and both the first side portion (141) and the second side portion (142) protrude toward the outside of the blade body (10).

8. The cutting insert according to claim 7, characterized in that An included angle α3 is formed between the first side surface portion (141) and the connected mounting end surface (11), satisfying the relationship 90°<α3<110°.

9. The cutting insert according to claim 7, characterized in that An included angle α4 is formed between the second side surface portion (142) and the connected mounting end surface (11), satisfying the relationship 90°<α4<110°.

10. The cutting insert according to claim 3 or 6, characterized in that An angle β is formed between the first side surface portion (141) and the second side surface portion (142), satisfying the relationship: 140°<β<180°.

11. The cutting insert according to claim 3 or 6, characterized in that Along the arrangement direction of the two mounting end surfaces (11), the blade body (10) has a first center plane, and the first side surface portion (141) and the second side surface portion (142) are symmetrical about the first center plane.

12. The cutting insert according to claim 3 or 6, characterized in that The plurality of first side surfaces (141) include a plurality of first sub-side surfaces (1411), the plurality of first sub-side surfaces (1411) are sequentially connected along a direction perpendicular to the arrangement direction of the two mounting end surfaces (11), the plurality of second side surfaces (142) include a plurality of second sub-side surfaces (1421), the plurality of second sub-side surfaces (1421) are sequentially connected along a direction perpendicular to the arrangement direction of the two mounting end surfaces (11), and the plurality of first sub-side surfaces (1411) and the plurality of second sub-side surfaces (1421) are connected in a one-to-one correspondence; At least two of the first sub-side surfaces (1411) are located in different planes, and / or at least two of the second sub-side surfaces (1421) are located in different planes.

13. The cutting insert according to any one of claims 1 to 9, characterized in that The connecting side surface (12) also has two third side surfaces (123), and the two third side surfaces (123) are opposite to each other and spaced apart. The connecting side surface (12) also has a plurality of corner side surfaces (124), and the plurality of corner side surfaces (124) are respectively connected between the first side surface (121) and the corresponding third side surface (123), and between the second side surface (122) and the corresponding third side surface (123). The cutting portion (20) is located at the edge of the blade body (10), and the cutting portion (20) intersects with the corresponding third side surface (123).

14. The cutting insert according to claim 13, characterized in that At least one of the first side surface (121) and the second side surface (122) is formed with a recessed portion (15), the recessed portion (15) extends along the arrangement direction of the two mounting end surfaces (11), and two ends of the recessed portion (15) respectively extend to the two mounting end surfaces (11), the recessed portion (15) is adjacent to the corresponding corner side surface (124), and the cutting portion (20) is formed with a material discharge groove (21), and the material discharge groove (21) is connected to the corresponding recessed portion (15).

15. The cutting insert according to claim 13, characterized in that At least one of the third side surfaces (123) is perpendicular to the two mounting end surfaces (11).

16. The cutting insert according to claim 13, characterized in that Along the arrangement direction of the first side surface (121) and the second side surface (122), the maximum spacing distance between the first side surface (121) and the second side surface (122) is W1, and the maximum spacing distance between the two opposite corner side surfaces (124) is W2, satisfying the relationship: W1≤W2.

17. The cutting insert according to claim 13, characterized in that The cutting portion (20) is formed with a cutting edge (22), and the cutting edge (22) extends along the edge of the corresponding third side surface (123). The cutting edge (22) includes a buffer edge (221), a curved edge (222) and an angle edge (223), and the curved edge (222) is connected between the buffer edge (221) and the angle edge (223).

18. The cutting insert according to claim 17, characterized in that Along the arrangement direction of the two third side surfaces (123), the orthographic projection length of the buffer blade (221) is smaller than the orthographic projection length of the curved blade (222).

19. The cutting insert according to claim 17, characterized in that The ratio of the orthographic projection length of the buffer blade (221) to the orthographic projection length of the curved blade (222) is η, satisfying the relationship: 0.02≤η≤0.

4.

20. The cutting insert according to claim 17, wherein Along the arrangement direction of the first side surface (121) and the second side surface (122), the blade body (10) has a second center surface, and the curved edge (222) is arranged corresponding to the second center surface.

21. The cutting insert according to claim 17, wherein An avoidance section (111) is formed at the intersection of the mounting end surface (11) provided with the cutting portion (20) and the corresponding third side surface (123); the avoidance section (111) extends along the edge of the corresponding third side surface (123) and is adjacent to the cutting edge (22); along the arrangement direction of the two mounting end surfaces (11), the height of the avoidance section (111) protruding from the corresponding mounting end surface (11) is less than the height of the curved edge (222) protruding from the corresponding mounting end surface (11), and the curved edge (222) is inclined toward the avoidance section (111).

22. The cutting insert according to claim 21, characterized in that The avoidance section (111) comprises a connected flat section (1111) and a buffer section (1112); the flat section (1111) is coplanar with the corresponding mounting end surface (11); the buffer section (1112) protrudes from the corresponding mounting end surface (11); the buffer section (1112) is inclined; and the buffer blade (221) is formed in the buffer section (1112).

23. A cutting tool, characterized in that: include: Blade body (2); A cutting insert (1), wherein the cutting insert (1) is a cutting insert (1) according to any one of claims 1 to 22, and the cutting insert (1) is fixed to the cutter body (2).

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