Cutting inserts

Abstract

The present invention relates to the technical field of machining tools. The present invention discloses a cutting blade, the cutting blade having a first end face and a peripheral side face, the peripheral side face being arranged around the first end face, the intersection of the peripheral side face and the first end face forming a cutting portion, the cutting portion comprising a connected chamfered face and a land face, the chamfered face and the land face being arranged around the edge of the first end face, the chamfered face being located outside the land face, a ridge protruding from the chamfered face and the land face, the ridge extending from the chamfered face to the land face, the ridge being multiple, and the multiple ridges being arranged at intervals along the circumferential direction of the cutting blade. The present invention arranges the ridges and utilizes the ridges to form wrinkles on the chips, thereby increasing the probability of chip breakage, effectively solving the problem of chip winding, thereby reducing the time of downtime for cleaning, improving machining efficiency, and eliminating the potential safety hazards of chip winding to the operator.

Description

Technical Field

[0001] The invention relates to the technical field of machining tools, in particular to a cutting blade. Background Art

[0002] In the related art, the cutting blade is provided with a chip breaker groove to achieve the bending and breaking of chips. However, under certain cutting conditions, especially when processing high hardness or high toughness materials, it is often difficult to ensure effective breaking of chips by relying solely on the chip breaker groove. 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, the present invention provides a cutting insert which increases the probability of chip breakage.

[0004] According to a cutting blade of an embodiment of the present invention, the cutting blade has a first end face and a peripheral side face, the peripheral side face is arranged around the first end face, and a cutting portion is formed at the intersection of the peripheral side face and the first end face, and the cutting portion includes a connected chamfered surface and a cutting edge surface, the chamfered surface and the cutting edge surface are arranged around the edge of the first end face, the chamfered surface is located on the outside of the cutting edge surface, and a ridge protrudes from the chamfered surface and the cutting edge surface, the ridge extends from the chamfered surface to the cutting edge surface, and there are multiple ridges, and the multiple ridges are arranged at intervals along the circumferential direction of the cutting blade.

[0005] According to the cutting blade of the embodiment of the present invention, a ridge is provided and utilized to form wrinkles on the chips, thereby increasing the probability of chip breakage and effectively solving the problem of chip entanglement, thereby reducing downtime for cleaning, improving processing efficiency, and eliminating the safety hazard of chip entanglement to the operator.

[0006] In some embodiments, there is a first angle between the chamfered surface and the land surface, the ridge portion includes a connected top ridge and side ridges, and there is a second angle between the top ridge and the side ridges; wherein the first angle is α, the second angle is β, β≤α.

[0007] In some embodiments, 155°≤α≤175°.

[0008] In some embodiments, 160°≤α≤170°.

[0009] In some embodiments, inner and outer ends of the chamfered surface are flush with inner and outer ends of the side ridges, and inner and outer ends of the land surface are flush with inner and outer ends of the top ridge.

[0010] In some embodiments, the width of the chamfered surface is A, 0.1 mm≤A≤0.6 mm.

[0011] In some embodiments, 0.2 mm ≤ A ≤ 0.5 mm.

[0012] In some embodiments, the width of the land surface is W, 0.1 mm≤W≤0.8 mm.

[0013] In some embodiments, 0.2 mm ≤ W ≤ 0.7 mm.

[0014] In some embodiments, the ridge protrudes to one side, and the ridge has a cross section, and a width of the cross section gradually decreases in the protruding direction.

[0015] In some embodiments, the maximum width of the cross section is b, 0.2 mm ≤ b ≤ 2 mm.

[0016] In some embodiments, 0.5 mm ≤ b ≤ 1.5 mm.

[0017] In some embodiments, the protrusion height of the ridge is h, 0.02 mm≤h≤0.2 mm.

[0018] In some embodiments, 0.05 mm ≤ h ≤ 0.15 mm.

[0019] In some embodiments, the cutting blade is constructed as a polygon, and the cutting blade has a first side and a second side, the second side is connected to the first side, and the chamfered surface and the edge band surface are jointly constructed as a cutting body. There are multiple cutting bodies, and the multiple cutting bodies include: a first cutting body, the first cutting body is constructed as a straight line, and the first cutting body corresponds to the first side; a second cutting body, a portion of the second cutting body corresponds to the first side, and the other portion corresponds to the second side; wherein, the second cutting body is at least partially constructed as an arc.

[0020] In some embodiments, on the first side, a plurality of the first cutting bodies are spaced apart, and a width of each of the first cutting bodies is greater than or equal to 1 mm.

[0021] In some embodiments, the cutting blade also has a second end face, the second end face is arranged opposite to the first end face, and the second end face is provided with a mounting hole for connecting the tool rod, and the mounting hole passes through the first end face and the second end face; wherein, the first end face includes a chip anti-chip table, the center line of the cutting blade passes through the chip anti-chip table, and the first end face is also provided with a chip breaker groove, and the chip breaker groove is arranged on the outside of the chip anti-chip table and adjacent to the cutting portion.

[0022] 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

[0023] 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:

[0024] Figure 1 is a schematic diagram of a cutting blade according to an embodiment of the present invention;

[0025] Figure 2 for Figure 1 The local enlarged view of point I in the middle;

[0026] Figure 3 is a top view of a cutting blade according to an embodiment of the present invention;

[0027] Figure 4 for Figure 3 Middle MM section;

[0028] Figure 5 for Figure 3 NN-direction cross section;

[0029] Figure 6 for Figure 3 Cross-section in the KK direction;

[0030] Figure 7 for Figure 3 A partial enlarged view of position II in the middle;

[0031] Figure 8 It is an enlarged view of the local structure of the cutting blade in the embodiment of the present invention.

[0032] Reference numerals:

[0033] 100. Cutting blade;

[0034] 10. First end surface; 11. Anti-chip table surface; 12. Chip breaker groove;

[0035] 20, peripheral side surface; 30, cutting portion; 31, chamfered surface; 32, land surface; 33, first cutting body; 34, second cutting body;

[0036] 40, ridge; 41, cross section; 42, top ridge; 43, side ridge; 50, first side edge; 52, second side edge;

[0037] 60. Second end surface; 61. Mounting hole. DETAILED DESCRIPTION

[0038] 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.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0040] In addition, features defined as “first” or “second” may explicitly or implicitly include one or more such features, and are used to distinguish and describe features, without any distinction in order or importance.

[0041] In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] A cutting insert 100 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0044] Reference Figure 1 , Figure 2According to an embodiment of the present invention, a cutting insert 100 comprises a first end face 10 and a peripheral side face 20. The peripheral side face 20 is arranged around the first end face 10. A cutting portion 30 is formed at the intersection of the peripheral side face 20 and the first end face 10. The cutting portion 30 comprises a connected chamfered land 31 and a land face 32. The chamfered land 31 and the land face 32 are arranged around the edge of the first end face 10. The chamfered land 31 is located on the outside of the land face 32. A ridge 40 protrudes from the chamfered land 31 and the land face 32. The ridge 40 extends from the chamfered land 31 to the land face 32. There are multiple ridges 40, and the multiple ridges 40 are arranged at intervals along the circumferential direction of the cutting insert 100.

[0045] The cutting portion 30 is formed between two surfaces, namely, on the corner between the first end surface 10 and the peripheral side surface 20. The cutting portion 30 is used to cut off the excess material on the workpiece. Specifically, the corner at the connection between the chamfer surface 31 and the land surface 32 contacts the workpiece to be cut, thereby cutting off the excess material. At the same time, the ridge 40 plays a cutting role. The ridge 40 is used to cut off the excess material on the workpiece. In the circumferential direction of the cutting blade 100, that is, in the annular direction surrounding the center line of the cutting blade 100, a plurality of ridges 40 are arranged at intervals. The excess material cut off by the cutting portion 30 forms chips, and the chips flow through the ridges 40.

[0046] Metal cutting is a basic process in machining, involving complex interactions between workpieces and tools. During the cutting process, the shape of the chips produced directly affects machining efficiency and safety. Long and continuous chips are easily entangled on the tool or workpiece, which not only hinders the continuous cutting process, but also poses a safety hazard to the operator.

[0047] In the related art, the cutting blade is provided with a chip breaker groove to achieve the bending and breaking of chips. However, under certain cutting conditions, especially when processing high hardness or high toughness materials, it is often difficult to ensure effective breaking of chips by relying solely on the chip breaker groove.

[0048] In the embodiment of the present invention, by providing the ridge 40, the chips are wrinkled when flowing through the ridge 40, making them easier to break at the chip breaker groove 12, thereby effectively solving the problem of chip entanglement. In this way, the timely breaking of the chips reduces the downtime for cleaning, improves the processing efficiency, and at the same time eliminates the safety hazard of chip entanglement to the operator.

[0049] Specifically, the first end face 10 of the cutting blade 100 faces the workpiece to be cut, and the peripheral side face 20 is a side face surrounding the first end face 10. A cutting portion 30 is provided on the edges and corners of the first end face 10 and the peripheral side face 20. The cutting portion 30 cuts the workpiece to be cut, and excess material forms chips. A plurality of ridges 40 are protruding and spaced apart on the connected chamfered lands 31 and the blade surface 32. The chips flow through the ridges 40 to form wrinkles, so that the chips are more easily broken when they subsequently contact the chip breaker groove 12, thereby increasing the probability of chip breakage.

[0050] According to the cutting blade 100 of the embodiment of the present invention, the ridge 40 is provided, and the ridge 40 is utilized to form wrinkles on the chips, thereby increasing the probability of chip breakage and effectively solving the problem of chip entanglement, thereby reducing the downtime for cleaning, improving processing efficiency, and eliminating the safety hazard of chip entanglement to the operator.

[0051] Reference Figures 2 to 5 In some embodiments, the chamfered surface 31 and the land surface 32 have a first angle therebetween, the ridge portion 40 includes a top ridge 42 and a side ridge 43 connected to each other, and a second angle is formed between the top ridge 42 and the side ridge 43. The first angle is α, the second angle is β, and β≤α.

[0052] There is an included angle between the chamfered surface 31 and the land surface 32 , and the corner at the connection portion between the chamfered surface 31 and the land surface 32 contacts the workpiece to be cut, thereby cutting off excess material.

[0053] In the above solution, by setting the second angle β not greater than the first angle α, the angle between the top ridge 42 and the side ridge 43 is smaller, thereby reducing the cutting resistance.

[0054] In some embodiments, 155°≤α≤175°.

[0055] The first angle α is the included angle between the chamfered surface 31 and the land surface 32 . By setting the included angle between the chamfered surface 31 and the land surface 32 within a range of 155° to 175°, stress concentration is avoided.

[0056] For example, the first angle α is 155°; or, the first angle α is 160°; or, the first angle α is 165°; or, the first angle α is 170°; or, the first angle α is 175°.

[0057] In some specific embodiments, 160°≤α≤170°.

[0058] Among them, the first angle α is the angle between the chamfered surface 31 and the land surface 32. By setting the angle between the chamfered surface 31 and the land surface 32 in the range of 160° to 170°, the cutting effect of the cutting blade 100 is improved and the probability of the cutting blade 100 breaking is reduced.

[0059] For example, the first angle α is 160°; or, the first angle α is 161°; or, the first angle α is 162°; or, the first angle α is 163°; or, the first angle α is 164°; or, the first angle α is 165°; or, the first angle α is 166°; or, the first angle α is 167°; or, the first angle α is 168°; or, the first angle α is 169°; or, the first angle α is 170°.

[0060] Reference Figure 2 , Figure 7 In some embodiments, inner and outer ends of the chamfered surface 31 are flush with inner and outer ends of the side ridge 43 , and inner and outer ends of the land surface 32 are flush with inner and outer ends of the top ridge 42 .

[0061] Among them, the inward end of the chamfered surface 31 is the end close to the center of the cutting blade 100, the outward end of the chamfered surface 31 is the end away from the center of the cutting blade 100, the inward end of the side ridge 43 is the end close to the center of the cutting blade 100, the outward end of the side ridge 43 is the end away from the center of the cutting blade 100, the inward end of the blade surface 32 is the end close to the center of the cutting blade 100, the outward end of the blade surface 32 is the end away from the center of the cutting blade 100, the inward end of the top ridge 42 is the end close to the center of the cutting blade 100, and the outward end of the top ridge 42 is the end away from the center of the cutting blade 100.

[0062] In the above scheme, by setting the inner and outer ends of the chamfered surface 31 to be flush with the inner and outer ends of the side ridge 43, and the inner and outer ends of the blade surface 32 to be flush with the inner and outer ends of the top ridge 42, the side ridge 43 and the top ridge 42 are enlarged, the side ridge 43 and the top ridge 42 can fully contact the chips, and the probability of wrinkles is increased.

[0063] Reference Figure 4 In some embodiments, the width of the chamfered surface 31 is A, 0.1 mm ≤ A ≤ 0.6 mm.

[0064] The chamfered surface 31 has a certain area, and the width of the chamfered surface 31 is within a certain range.

[0065] In the above scheme, by setting the width of the chamfered surface 31, the chamfered surface 31 is within a certain size range, thereby avoiding the problem of low strength and high cost caused by the chamfered surface 31 being too small, and avoiding the waste caused by being too large, making the entire cutting blade 100 more compact.

[0066] For example, the width of the chamfered surface 31 is 0.1 mm; or, the width of the chamfered surface 31 is 0.2 mm; or, the width of the chamfered surface 31 is 0.3 mm; or, the width of the chamfered surface 31 is 0.4 mm; or, the width of the chamfered surface 31 is 0.5 mm; or, the width of the chamfered surface 31 is 0.6 mm.

[0067] Reference Figure 4 , in some specific embodiments, 0.2mm≤A≤0.5mm.

[0068] The width of the chamfered surface 31 is A, the chamfered surface 31 has a certain area, and the width of the chamfered surface 31 is within a certain range.

[0069] In the above solution, the width of the chamfered surface 31 is further set within a certain range, which improves the cutting effect of the cutting insert 100 and reduces the cost.

[0070] For example, the width of the chamfered surface 31 is 0.2 mm; or, the width of the chamfered surface 31 is 0.25 mm; or, the width of the chamfered surface 31 is 0.3 mm; or, the width of the chamfered surface 31 is 0.35 mm; or, the width of the chamfered surface 31 is 0.4 mm; or, the width of the chamfered surface 31 is 0.45 mm; or, the width of the chamfered surface 31 is 0.5 mm.

[0071] Reference Figure 4 In some embodiments, the width of the land surface 32 is W, 0.1 mm ≤ W ≤ 0.8 mm.

[0072] The land surface 32 has a certain area, and the width of the land surface 32 is within a certain range.

[0073] In the above scheme, by setting the width of the blade surface 32, the blade surface 32 is within a certain size range, avoiding the problem of lower strength and higher cost caused by the blade surface 32 being too small, and avoiding the waste caused by being too large, making the entire cutting blade 100 more compact.

[0074] For example, the width of the margin surface 32 is 0.1 mm; or, the width of the margin surface 32 is 0.2 mm; or, the width of the margin surface 32 is 0.3 mm; or, the width of the margin surface 32 is 0.4 mm; or, the width of the margin surface 32 is 0.5 mm; or, the width of the margin surface 32 is 0.6 mm; or, the width of the margin surface 32 is 0.7 mm; or, the width of the margin surface 32 is 0.8 mm.

[0075] Reference Figure 4 , in some specific embodiments, 0.2mm≤W≤0.7mm.

[0076] The width of the land surface 32 is W, the land surface 32 has a certain area, and the width of the land surface 32 is within a certain range.

[0077] In the above solution, the width of the land surface 32 is further set within a certain range, which improves the cutting effect of the cutting insert 100 and reduces the cost.

[0078] For example, the width of the blade surface 32 is 0.2mm; or, the width of the blade surface 32 is 0.25mm; or, the width of the blade surface 32 is 0.3mm; or, the width of the blade surface 32 is 0.35mm; or, the width of the blade surface 32 is 0.4mm; or, the width of the blade surface 32 is 0.45mm; or, the width of the blade surface 32 is 0.5mm; or, the width of the blade surface 32 is 0.55mm; or, the width of the blade surface 32 is 0.6mm; or, the width of the blade surface 32 is 0.65mm; or, the width of the blade surface 32 is 0.7mm.

[0079] Reference Figure 2 , Figure 6 In some embodiments, the ridge 40 protrudes to one side, and the ridge 40 has a cross section 41 , and the width of the cross section 41 gradually decreases in the protruding direction.

[0080] In the above solution, by gradually reducing the width of the cross section 41 of the ridge 40 , the size of the ridge 40 changes smoothly, avoiding stress concentration, reducing the probability of chips damaging the ridge 40 , and allowing the chips to pass smoothly.

[0081] Specifically, the cross section 41 of the ridge 40 is configured as a partial ellipse to facilitate molding.

[0082] Reference Figure 6 In some embodiments, the maximum width of the cross section 41 is b, 0.2 mm ≤ b ≤ 2 mm.

[0083] The width of the ridge 40 gradually decreases, and the bottom dimension of the cross section 41 is the largest, and the width of the bottom surface is b.

[0084] In the above scheme, by setting the maximum width on the cross section 41 within the range of 0.2 mm to 2 mm, the ridge 40 is made more secure, avoiding the ridge 40 from breaking off from the cutting blade 100, while avoiding waste caused by excessive size, making the structure compact, giving full play to the effect of the ridge 40, and reducing the cutting resistance.

[0085] For example, the maximum width b on the cross section 41 is 0.2 mm; or, the maximum width b on the cross section 41 is 0.5 mm; or, the maximum width b on the cross section 41 is 1 mm; or, the maximum width b on the cross section 41 is 1.5 mm; or, the maximum width b on the cross section 41 is 2 mm.

[0086] Reference Figure 6 , in some specific embodiments, 0.5mm≤b≤1.5mm.

[0087] The maximum width of the cross section 41 is W, and the cross section 41 has a certain area.

[0088] In the above solution, the size of the ridge 40 is further set within a certain range, which improves reliability and reduces costs.

[0089] For example, the maximum width b on the cross section 41 is 0.2 mm; or, the maximum width b on the cross section 41 is 0.5 mm; or, the maximum width b on the cross section 41 is 0.8 mm; or, the maximum width b on the cross section 41 is 1 mm; or, the maximum width b on the cross section 41 is 1.3 mm; or, the maximum width b on the cross section 41 is 1.5 mm.

[0090] Reference Figure 6 In some embodiments, the protrusion height of the ridge 40 is h, 0.02 mm≤h≤0.2 mm.

[0091] The ridge 40 is arranged to be protruding, so that the chips flow through the ridge 40 .

[0092] In the above scheme, by setting the height of the ridge 40 within the range of 0.02 mm to 0.2 mm, the ridge 40 can fully play its role, the chips flow through the ridge 40 to form wrinkles, and the risk of breakage caused by the ridge 40 being too high is reduced, the effect of the ridge 40 is fully exerted, and the cutting resistance is reduced.

[0093] For example, the protrusion height h of the ridge 40 is 0.02 mm; or, the protrusion height h of the ridge 40 is 0.05 mm; or, the protrusion height h of the ridge 40 is 0.1 mm; or, the protrusion height h of the ridge 40 is 0.15 mm; or, the protrusion height h of the ridge 40 is 0.2 mm.

[0094] Reference Figure 6 , in some specific embodiments, 0.05mm≤h≤0.15mm.

[0095] The height of the ridge 40 is h, and the height of the ridge 40 is limited to a smaller range.

[0096] In the above solution, by setting h within the range of 0.05 mm to 0.15 mm, the risk of fracture of the ridge 40 is further reduced, and the cutting resistance is reduced, thereby bringing into play the effect of the ridge 40 .

[0097] For example, the protrusion height h of the ridge 40 is 0.05 mm; or, the protrusion height h of the ridge 40 is 0.08 mm; or, the protrusion height h of the ridge 40 is 0.1 mm; or, the protrusion height h of the ridge 40 is 0.13 mm; or, the protrusion height h of the ridge 40 is 0.15 mm.

[0098] Reference Figure 7 , Figure 8 In some specific embodiments, the ridge 40 is in the shape of an elongated strip. Of course, the ridge 40 can also be in the shape of a rectangle or a spindle.

[0099] Reference Figure 1 , Figure 7 In some embodiments, the cutting blade 100 is constructed as a polygon, and the cutting blade 100 has a first side 50 and a second side 52, the second side 52 is connected to the first side 50, and the chamfered surface 31 and the blade surface 32 are jointly constructed as a cutting body, and there are multiple cutting bodies, and the multiple cutting bodies include: a first cutting body 33 and a second cutting body 34.

[0100] The first cutting body 33 is configured as a straight line, and the first cutting body 33 corresponds to the first side 50. The second cutting body 34 partially corresponds to the first side 50, and the other part corresponds to the second side 52. The second cutting body 34 is at least partially configured as an arc.

[0101] Among them, the cutting blade 100 has multiple edges, the first side 50 is adjacent to the second side 52, the straight first cutting body 33 corresponds to the first side 50, the second cutting body 34 partially corresponds to the first side 50, and the other part corresponds to the second side 52, and the second cutting body 34 is located at the position where the first side 50 and the second side 52 are connected.

[0102] In the above solution, the second cutting body 34 is partially constructed in an arc shape, and the arc structure is utilized to avoid stress concentration, thereby reducing the probability of damage to the cutting insert 100.

[0103] Specifically, the cutting blade 100 is constructed as a rounded quadrilateral, the straight side is the first side 50, the arcuate side is the second side 52, the first cutting body 33 is located on the side of the first side 50 close to the center, the second cutting body 34 is partially located on the side of the first side 50 close to the second side 52, and the other part is located on the side of the second side 52 close to the center, so as to avoid stress concentration.

[0104] More specifically, there are multiple first sides 50, and the opposite ends of the second side 52 are respectively connected to different first sides 50. Part of the second cutting body 34 corresponds to one of the first sides 50, and the other part corresponds to the other first side 50. That is to say, the cutting blade 100 is constructed as an indexable blade, and multiple sides can be switched for use.

[0105] In some embodiments, on the first side 50, a plurality of first cutting bodies 33 are arranged at intervals, and a width of each first cutting body 33 is greater than or equal to 1 mm.

[0106] The plurality of first cutting bodies 33 are arranged at intervals along the length direction of the first side edge 50 , and the plurality of first cutting bodies 33 can all exert cutting effects.

[0107] In the above solution, by arranging the plurality of first cutting bodies 33 at intervals, the plurality of first cutting bodies 33 can perform cutting action simultaneously, and the middle ridge 40 can be fully utilized, thereby increasing the probability of chip wrinkles and making the wrinkle area larger.

[0108] Reference Figure 1 , Figure 3 In some embodiments, the cutting insert 100 further comprises a second end face 60, which is arranged opposite to the first end face 10, and the cutting insert 100 further comprises a mounting hole 61 for connecting the tool bar, and the mounting hole 61 penetrates the first end face 10 and the second end face 60. The first end face 10 comprises a chip countertop 11, and the center line of the cutting insert 100 passes through the chip countertop 11. The first end face 10 further comprises a chip breaker groove 12, which is arranged outside the chip countertop 11 and adjacent to the cutting portion 30.

[0109] The mounting hole 61 plays a fixing effect, thereby fixing the cutting blade 100 on the arbor. The chip countertop 11 is continuously arranged along the periphery of the mounting hole 61, and the chip breaker groove 12 is arranged on the outer side of the chip countertop 11 and adjacent to the cutting portion 30. The chip breaker groove 12 is used to form short chips. The cross-section of the chip breaker groove 12 is a groove shape, specifically a U shape. The chip breaker groove 12 forms an angle of 10° to 25° with the land surface 32, and an angle of 20° to 60° with the chip countertop 11. The chips are first cut off by the cutting portion 30, then flow through the chip breaker groove 12, and finally bent and broken by the chip breaker groove 12.

[0110] In the above scheme, by providing the chip anti-chip table 11 and the chip breaker groove 12, the longer chips are broken and the longer chips are reduced.

[0111] Specifically, the mounting hole 61 is a through hole, which passes through the first end surface 10 and the second end surface 60 , and the diameter of the through hole is d, 7.5 mm≤d≤10 mm.

[0112] Other structures and operations of the cutting insert 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.

[0113] In the description of this specification, the description with reference to the terms "embodiment", "example", etc. 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 can be combined in any one or more embodiments or examples in a suitable manner.

[0114] 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: The cutting blade (100) comprises a first end face (10) and a peripheral side face (20), wherein the peripheral side face (20) is arranged around the first end face (10), and a cutting portion (30) is formed at the intersection of the peripheral side face (20) and the first end face (10), wherein the cutting portion (30) comprises a connected chamfered land (31) and a land face (32), wherein the chamfered land face (31) and the land face (32) are arranged around the edge of the first end face (10), wherein the chamfered land face (31) is located outside the land face (32), and a ridge (40) protrudes from the chamfered land face (31) and the land face (32), wherein the ridge (40) extends from the chamfered land face (31) to the land face (32), and wherein there are a plurality of ridges (40), and the plurality of ridges (40) are arranged at intervals along the circumferential direction of the cutting blade (100); wherein: The chamfered surface (31) and the land surface (32) have a first angle therebetween, the ridge portion (40) comprises a top ridge (42) and a side ridge (43) connected to each other, the top ridge (42) and the side ridge (43) have a second angle therebetween, the first angle is α, the second angle is β, β≤α; The ridge (40) protrudes toward one side, and the ridge (40) has a cross section (41). In the protruding direction, the width of the cross section (41) gradually decreases.

2. The cutting insert according to claim 1, characterized in that 155°≤α≤175°。 3. The cutting insert according to claim 2, characterized in that 160°≤α≤170°。 4. The cutting insert according to claim 1, characterized in that The inner and outer ends of the chamfered surface (31) are flush with the inner and outer ends of the side ridge (43), and the inner and outer ends of the land surface (32) are flush with the inner and outer ends of the top ridge (42).

5. The cutting insert according to claim 1, characterized in that The width of the chamfered surface (31) is A, 0.1 mm≤A≤0.6 mm.

6. The cutting insert according to claim 5, characterized in that 0.2mm≤A≤0.5mm.

7. The cutting insert according to claim 1, characterized in that The width of the land surface (32) is W, 0.1 mm≤W≤0.8 mm.

8. The cutting insert according to claim 7, characterized in that 0.2mm≤W≤0.7mm.

9. The cutting insert according to claim 1, characterized in that The maximum width of the cross section (41) is b, 0.2 mm ≤ b ≤ 2 mm.

10. The cutting insert according to claim 9, characterized in that 0.5mm≤b≤1.5mm.

11. The cutting insert according to claim 1, characterized in that The protrusion height of the ridge (40) is h, 0.02mm≤h≤0.2mm.

12. The cutting insert according to claim 11, characterized in that 0.05mm≤h≤0.15mm.

13. The cutting insert according to claim 1, wherein The cutting insert (100) is configured as a polygon, and has a first side edge (50) and a second side edge (52), wherein the second side edge (52) is connected to the first side edge (50), and the chamfered surface (31) and the land surface (32) are configured together as a cutting body, and the cutting body is multiple, and the multiple cutting bodies include: A first cutting body (33), wherein the first cutting body (33) is configured as a straight line, and the first cutting body (33) corresponds to the first side edge (50); A second cutting body (34), wherein a portion of the second cutting body (34) corresponds to the first side edge (50), and another portion corresponds to the second side edge (52); wherein, The second cutting body (34) is at least partially configured in an arc shape.

14. The cutting insert according to claim 13, characterized in that On the first side (50), a plurality of the first cutting bodies (33) are arranged at intervals, and the width of each of the first cutting bodies (33) is greater than or equal to 1 mm.

15. The cutting insert according to any one of claims 1 to 14, characterized in that The cutting blade (100) further comprises a second end surface (60), the second end surface (60) being arranged opposite to the first end surface (10), and further comprising a mounting hole (61) for connecting to a tool rod, the mounting hole (61) penetrating the first end surface (10) and the second end surface (60); wherein, The first end surface (10) comprises a chip counter surface (11), the center line of the cutting blade (100) passes through the chip counter surface (11), and the first end surface (10) is also provided with a chip breaker groove (12), and the chip breaker groove (12) is arranged on the outer side of the chip counter surface (11) and adjacent to the cutting portion (30).

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