Blade

Abstract

The utility model relates to the technical field of tools, in particular to a blade which comprises a base body and a tool bit, a tool groove is formed in the base body, and openings are formed in the top and at least one side of the tool groove; the tool bit is arranged in the tool groove and connected through welding. The tool bit is provided with a tool bit assembling bottom face and a tool bit assembling side vertical face, the tool groove is provided with a tool groove bottom face and a tool groove side vertical face, the tool bit assembling bottom face and the tool groove bottom face are oppositely arranged, and the tool bit assembling side vertical face and the tool groove side vertical face are oppositely arranged. The joint of the bottom face of the cutter groove and the cutter head assembly side vertical face is chamfered, in the direction away from the fillet, the cutter groove side vertical face gradually gets close to the cutter head assembly side vertical face and is obliquely arranged, and / or the bottom face of the cutter groove gradually gets close to the cutter head assembly bottom face and is obliquely arranged. Gaps are formed between the tool bit assembly bottom face and the bottom face of the tool groove and between the tool bit assembly side vertical face and the tool groove side vertical face, and the gaps are filled with welding flux. Therefore, the chamfering process of the tool bit is omitted, the cost is reduced, the efficiency is improved, and the tool bit does not generate cracks.

Description

Technical Field

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

[0002] As the most advantageous tool material for machining hard-to-machine ferrous metals and other materials, superhard materials are essential tools for precision and ultra-precision turning. Among them, superhard composite welding blades are mainly used for finishing of rollers, mining machinery, large gears, bearings and other industries. They include a base 1' and a cutter head 2'. The base 1' is grooved with a grinding wheel, and there is an R angle 11' at the root. Therefore, the cutter head 2' needs to be manually chamfered to avoid the R angle 11' at the root of the groove. Then the two are assembled. The structure is as follows: Fig.11 shown.

[0003] However, the superhard material composite welding blade of the above structure has the following problems:

[0004] (1) The size of the chamfer 21' of the cutter head 2' is difficult to control. When the size of the chamfer 21' is too small, it is easy to cause the root R angle 11' to be unable to be completely avoided, and the final weld is too large, which in turn causes a cold weld. When the size of the chamfer 21' is too large, the gap between the chamfer 21' and the root of the groove is large after assembly, and there is more solder. The solder shrinks during cooling, and the stress generated is large, which is more likely to cause cracks in the cutter head 2', thereby affecting the service life of the tool;

[0005] (2) When the cutter head 2' is small, safety accidents are prone to occur during manual chamfering, and the operator's skill level is required to be high;

[0006] (3) The efficiency of chamfering the cutter head is low, and the labor cost and time cost are high. Utility Model Content

[0007] The purpose of the present application is to provide a blade which, to a certain extent, solves the technical problem in the prior art that in order to avoid the R angle of the groove root on the substrate, the blade head needs to be manually chamfered, which not only makes the size difficult to control, but also has low processing efficiency, high cost, and is prone to safety accidents.

[0008] The present application provides a blade, comprising: a base body and a blade head; wherein the base body is formed with a blade groove, and the top and at least one side of the blade groove are both formed with openings; the blade head is arranged in the blade groove, and the two are connected by welding;

[0009] The knife groove has a knife groove bottom surface and a knife groove side vertical surface, and the knife head has a knife head assembly bottom surface and a knife head assembly side vertical surface which are arranged perpendicularly, and the knife head assembly bottom surface and the knife groove bottom surface are arranged oppositely, and the knife head assembly side vertical surface and the knife groove side vertical surface are arranged oppositely;

[0010] A fillet is formed at the connection between the bottom surface of the knife groove and the side elevation of the knife groove, wherein the side elevation of the knife groove is inclined relative to the first depth direction of the knife groove on its corresponding side, and along the direction away from the fillet, the side elevation of the knife groove is gradually arranged close to the tool head assembly side elevation, and / or wherein the bottom surface of the knife groove is inclined relative to the second depth direction of the knife groove on its corresponding side, and along the direction away from the fillet, the bottom surface of the knife groove is gradually arranged close to the tool head assembly bottom surface;

[0011] A matching gap is formed between the tool head assembly bottom surface and the corresponding tool groove bottom surface, and between the tool head assembly side vertical surface and the corresponding tool groove side vertical surface, and the matching gap is filled with solder.

[0012] In the above technical solution, further, the calculation formula of the inclination angle of the side elevation of the knife groove or the bottom surface of the knife groove is as follows:

[0013] Among them, R is the radius of the fillet, h is the depth of the tool groove along the first depth direction or the depth of the tool groove along the second depth direction, a is the thickness of the solder layer located between the tool head and the tool groove and parallel to the tool head assembly side elevation or the tool head assembly bottom surface, and the units of the three are the same.

[0014] In any of the above technical solutions, further, the radius of the fillet is 0.06-0.1 mm.

[0015] In any of the above technical solutions, further, the depth of the knife groove is 1.0-1.6 mm.

[0016] In any of the above technical solutions, further, the thickness of the solder layer is 0.01-0.2 mm.

[0017] In any of the above technical solutions, further, the range of α is 0-15°

[0018] In any of the above technical solutions, further, the tool groove has a tool groove side elevation, and the tool head has a tool head assembly side elevation.

[0019] In any of the above technical solutions, further, the side elevation of the tool groove is inclined relative to the side elevation of the tool head assembly, or the bottom surface of the tool groove is inclined relative to the bottom surface of the tool head assembly.

[0020] In any of the above technical solutions, further, along the height direction perpendicular to the base body, the cross-section of the knife groove is triangular.

[0021] In any of the above technical solutions, further, the base body is prismatic, and the knife grooves are formed at two vertex corners arranged at intervals along its long diagonal line, and the knife head is arranged in any of the knife grooves.

[0022] In any of the above technical solutions, further, the material of the substrate is cemented carbide.

[0023] In any of the above technical solutions, further, the cutter head is made of superhard material.

[0024] Compared with the prior art, the beneficial effects of this application are:

[0025] The blade provided by the present application does not need to be chamfered after the cutting of the blade head, and the original structure is kept unchanged, while the structure of the blade groove on the base is changed. Specifically, the bottom wall of the blade groove on the base, that is, the bottom surface of the blade groove, is gradually inclined along the direction away from the rounded corner and approaches the assembly side vertical surface of the blade head, or the bottom wall of the blade groove on the base, that is, the bottom surface of the blade groove, is gradually inclined along the direction away from the rounded corner and approaches the assembly side vertical surface of the blade head, which can ensure that the bottom sharp corner of the blade head can reach the root of the slot, that is, the rounded corner position, during the assembly process, and no interference will be generated;

[0026] Moreover, because the cutter head is not chamfered, the cutter head cracks caused by welding stress will not occur, which greatly improves the service life of the cutter head. There is no need to process the edges of smaller cutter heads, which improves processing efficiency and reduces the skill requirements for machining workers, thereby improving labor costs and time costs. The entire processing process is safer and more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 A schematic diagram of the structure of a blade provided in an embodiment of the present application;

[0029] Figure 2 A schematic diagram of the structure of the substrate provided in the embodiment of the present application;

[0030] Figure 3 for Figure 2 A schematic diagram of a local enlarged structure;

[0031] Figure 4 An assembly diagram of a base and a cutter head provided in an embodiment of the present application;

[0032] Figure 5 for Figure 4 A schematic diagram of a local enlarged structure;

[0033] Figure 6 Another schematic diagram of the structure of the blade provided in the embodiment of the present application;

[0034] Figure 7 Another schematic diagram of the structure of the substrate provided in the embodiment of the present application;

[0035] Figure 8 for Figure 7 A schematic diagram of a local enlarged structure;

[0036] Fig. 9 Another assembly diagram of the base and the cutter head provided in the embodiment of the present application;

[0037] Fig.10 for Fig. 9 A schematic diagram of a local enlarged structure;

[0038] Fig.11 It is a structural schematic diagram of a cutter head in the prior art.

[0039] Reference numerals:

[0040] 1'-base, 11'-R angle, 2'-knife head, 21'-chamfer;

[0041] 1-base, 11-knife groove, 111-bottom surface of the knife groove, 112-side vertical surface of the knife groove, 2-knife head, 211-knife head assembly bottom surface, 212-knife head assembly side vertical surface, L1-first depth direction, L2-second depth direction. DETAILED DESCRIPTION

[0042] The technical solution of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0043] The components of the embodiments of the present application generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed, but merely represents the selected embodiments of the present application.

[0044] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.

[0045] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0046] In the description of this application, 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 this application can be understood according to specific circumstances.

[0047] Refer to the following Figures 1 to 10 A blade according to some embodiments of the present application is described.

[0048] Embodiment 1

[0049] See also Figures 1 to 5 As shown, an embodiment of the present application provides a blade, comprising: a base 1 and a blade head 2; wherein the base 1 is formed with a blade groove 11, and the cross section of the blade groove 11 along the vertical depth direction thereof, specifically referring to the first depth direction L1 described below, is triangular, and the blade groove 11 has a blade groove bottom surface 111 and a blade groove side vertical surface 112, so that the top and the other two sides of the blade groove 11 are open, and the connection between the blade groove bottom surface 111 and the blade groove side vertical surface 112 forms a rounded corner;

[0050] The cutter head 2 has a cutter head assembly bottom surface 211 and a cutter head assembly side elevation surface 212 which are arranged vertically, and further, preferably, the cutter head 2 has two other side surfaces, and the two side surfaces are respectively formed on both sides of a cutter head assembly side elevation surface 212;

[0051] The cutter head assembly bottom surface 211 corresponds to the cutter groove bottom surface 111, and the cutter head assembly side elevation surface 212 corresponds to the cutter groove side elevation surface 112;

[0052] The knife groove side elevation 112 is inclined relative to the first depth direction L1 of the knife groove 11 on its corresponding side, and along the direction away from the rounded corner, the knife groove side elevation 112 is gradually approached to the tool head assembly side elevation 212, and a fitting gap is formed between the tool head assembly bottom surface 211 and the corresponding knife groove bottom surface 111, and between the tool head assembly side elevation 212 and the corresponding knife groove side elevation 112, and the fitting gap is filled with solder.

[0053] Based on the structure described above, it can be known that the chamfering operation is no longer performed on the cutter head 2 after cutting, and the original structure is kept unchanged, while the structure of the cutter groove 11 on the base 1 is changed. Specifically, the side wall of the cutter groove 11 on the base 1, that is, the side elevation surface 112 of the cutter groove is gradually inclined toward the cutter head assembly side elevation surface 212 in the direction away from the rounded corner, so as to ensure that during the assembly process, the bottom sharp corner of the cutter head 2 can reach the root of the groove, that is, the rounded corner position, and no interference will be generated;

[0054] Moreover, since the cutter head 2 has no chamfered edges, there is no welding stress concentration, and thus the problem of cutter head cracks will not occur, which greatly improves the service life of the cutter head 2. There is no need to process the edges of the smaller cutter head 2, which improves the processing efficiency and reduces the skill requirements for machining workers, thereby improving labor costs and time costs. The entire processing process is safer and more reliable.

[0055] In this embodiment, preferably, Figure 3 and Figure 5 As shown, the calculation formula of the sipe side elevation 112 is as follows:

[0056] Wherein, R is the radius of the fillet, h is the depth of the tool groove 11 along the first depth direction L1, a is the thickness of the solder layer between the tool head 2 and the tool groove 11 and parallel to the tool head assembly side elevation 212, and the units of the three are the same.

[0057] Further, preferably, h=1.6 mm, R=0.06 mm, and a=0.02 mm.

[0058] Through calculation, we know that the angle That is, along the direction away from the aforementioned rounded corner, the slit side elevation 112 gradually approaches the cutter head assembly side elevation 212 and is inclined, and the angle between the two is 1.45°. Of course, the value of α is not limited to the above, and it can be selected within the range of 0-15° according to actual needs.

[0059] In this embodiment, preferably, Figure 1 and Figure 2 As shown, the base body 1 is prismatic, and knife grooves 11 are formed at two vertex corners arranged at intervals along its long diagonal line, and a knife head 2 is arranged in any knife groove 11.

[0060] According to the structure described above, the two cutter heads 2 can work alternately, which improves the processing efficiency and helps to extend the service life of the cutter heads 2.

[0061] Of course, the shape of the substrate 1 is not limited to the above, and it can also be a cube, a cuboid, or a block structure with a polygonal cross-section such as a triangle, a pentagon or a hexagon, or other irregular shapes, depending on actual needs.

[0062] In addition, the number of the cutter heads 2 is not limited to two, but can also be one, three, four, etc., that is, more than two, and the setting position of the cutter head 2 is not limited to being installed at the top corner, but can also be installed on the side of the base 1, etc., depending on actual needs.

[0063] In addition, the shape of the knife groove 11 is not limited thereto, and can also be designed according to actual needs. For example, in addition to a knife groove bottom surface 111 and a knife groove side vertical surface 112, it can also have other side wall surfaces, which are specifically designed according to actual needs.

[0064] In this embodiment, preferably, the material of the substrate 1 is cemented carbide to meet the strength requirements.

[0065] In this embodiment, preferably, the tool head 2 is made of superhard material such as PCBN polycrystalline cubic boron nitride or PCD artificial polycrystalline diamond, which can process high-hardness difficult-to-process materials such as ferrous metals, and is an essential tool for achieving precision and ultra-precision turning.

[0066] Embodiment 2

[0067] The blade in this embodiment is an improvement on the embodiment 1, and the technical contents disclosed in the embodiment 1 are not described repeatedly, and the contents disclosed in the embodiment 1 also belong to the contents disclosed in this embodiment.

[0068] The difference between the blades provided in this embodiment and in the first embodiment is that: Figures 1 to 5 As shown, h = 1.6mm, R = 0.1mm, through calculation, we know that the angle That is to say, along the direction away from the aforementioned rounded corner, the tool groove side elevation 112 gradually approaches the tool head assembly side elevation 212 and is inclined, and the angle between the two is 2.9°.

[0069] Embodiment 3

[0070] The blade in this embodiment is an improvement on the embodiment 1, and the technical contents disclosed in the embodiment 1 are not described repeatedly, and the contents disclosed in the embodiment 1 also belong to the contents disclosed in this embodiment.

[0071] The difference between the blades provided in this embodiment and in the first embodiment is that: Figures 1 to 5 As shown, h = 1.0mm, R = 0.06mm, through calculation, we know that the angle That is to say, along the direction away from the aforementioned rounded corner, the tool groove side elevation 112 gradually approaches the tool head assembly side elevation 212 and is inclined, and the angle between the two is 2.33°.

[0072] Embodiment 4

[0073] The blade in this embodiment is an improvement on the embodiment 1, and the technical contents disclosed in the embodiment 1 are not described repeatedly, and the contents disclosed in the embodiment 1 also belong to the contents disclosed in this embodiment.

[0074] The difference between the blades provided in this embodiment and in the first embodiment is that: Figures 1 to 5 As shown, h = 1.0mm, R = 0.1mm, through calculation, we know that the angle That is to say, along the direction away from the aforementioned rounded corner, the tool groove side elevation 112 gradually approaches the tool head assembly side elevation 212 and is inclined, and the angle between the two is 2.33°.

[0075] Embodiment 5

[0076] See also Figures 6 to 10 As shown, an embodiment of the present application provides a blade, comprising: a base 1 and a blade head 2; wherein the base 1 is formed with a blade groove 11, and the cross section of the blade groove 11 along the vertical direction of its depth, that is, the aforementioned first depth direction L1, is triangular, and the blade groove 11 has a blade groove bottom surface 111 and a blade groove side vertical surface 112, so that the top and the other two sides of the blade groove 11 are open, and the connection between the blade groove bottom surface 111 and the blade groove side vertical surface 112 forms a rounded corner;

[0077] The cutter head 2 has a cutter head assembly bottom surface 211 and a cutter head assembly side elevation surface 212 which are arranged vertically, and further, preferably, the cutter head 2 has two other side surfaces, and the two side surfaces are respectively formed on both sides of a cutter head assembly side elevation surface 212, and a chamfer is arranged at the edge where the two side surfaces intersect;

[0078] The tool head assembly bottom surface 211 corresponds to the tool groove bottom surface 111, and the tool head assembly side elevation surface 212 corresponds to the tool groove side elevation surface 112, wherein the tool groove bottom surface 111 is inclined relative to the second depth direction L2 of the tool groove 11 on its corresponding side, and along the direction away from the fillet, the tool groove bottom surface 111 is gradually arranged close to the tool head assembly bottom surface 211;

[0079] Matching gaps are formed between the tool head assembly bottom surface 211 and the corresponding tool groove bottom surface 111 , and between the tool head assembly side vertical surface 212 and the corresponding tool groove side vertical surface 112 , and the matching gaps are filled with solder.

[0080] Based on the structure described above, it can be known that the chamfering operation is no longer performed on the cutter head 2 after cutting, and the original structure is kept unchanged, while the structure of the cutter groove 11 on the base 1 is changed. Specifically, the bottom wall of the cutter groove 11 on the base 1, that is, the bottom surface 111 of the cutter groove is gradually inclined toward the cutter head assembly bottom surface 211 in the direction away from the rounded corner, so as to ensure that during the assembly process, the bottom sharp corner of the cutter head 2 can reach the root of the groove, that is, the rounded corner position, and no interference will be generated;

[0081] Moreover, since the cutter head 2 is not chamfered, cracks on the cutter head due to welding stress will not occur, which greatly improves the service life of the cutter head 2. There is no need to process the edges of the smaller cutter head 2, which improves the processing efficiency and reduces the skill requirements for machining workers, thereby improving labor costs and time costs. The entire processing process is safer and more reliable.

[0082] In this embodiment, preferably, Figure 8 and Fig.10 As shown, the calculation formula of the inclination angle of the bottom surface 111 of the sipe is as follows:

[0083] Wherein, R is the radius of the fillet, h is the depth of the tool groove 11 along the second depth direction L2, a is the thickness of the solder layer between the tool head 2 and the tool groove 11 and parallel to the tool head assembly bottom surface 211, and the units of the three are the same.

[0084] Further, preferably, R=0.06 mm, h=1.6 mm, and a=0.02 mm.

[0085] Through calculation, we know that the angle That is to say, along the direction away from the aforementioned rounded corner, the bottom surface 111 of the tool groove gradually approaches the tool head assembly bottom surface 211 and is inclined, and the angle formed by the two is 1.45°.

[0086] In this embodiment, preferably, Figures 1 to 3 As shown, the base body 1 is prismatic, and knife grooves 11 are formed at two vertex corners arranged at intervals along its long diagonal line, and a knife head 2 is arranged in any knife groove 11.

[0087] According to the structure described above, the two cutter heads 2 can work alternately, which improves the processing efficiency and helps to extend the service life of the cutter heads 2.

[0088] Of course, the shape of the substrate 1 is not limited to the above, and it can also be a cube, a cuboid, or a block structure with a polygonal cross-section such as a triangle, a pentagon or a hexagon, or other irregular shapes, depending on actual needs.

[0089] In addition, the number of the cutter heads 2 is not limited to two, but can also be one, three, four, etc., that is, more than two, and the setting position of the cutter head 2 is not limited to being installed at the top corner, but can also be installed on the side of the base 1, etc., depending on actual needs.

[0090] In this embodiment, preferably, the material of the substrate 1 is cemented carbide to meet the strength requirements.

[0091] In this embodiment, preferably, the tool head 2 is made of superhard material, which is the most advantageous tool material for processing high-hardness difficult-to-process ferrous metals and other materials, and is the manufacturing material of essential tools for achieving precision and ultra-precision turning.

[0092] Embodiment 6

[0093] The blade in this embodiment is an improvement on the fifth embodiment, and the technical contents disclosed in the fifth embodiment will not be described repeatedly, and the contents disclosed in the fifth embodiment also belong to the contents disclosed in this embodiment.

[0094] The difference between the blades provided in this embodiment and the fifth embodiment is that: Figure 8 and Fig.10 As shown, h = 1.6mm, R = 0.1mm, through calculation, we know that the angle That is to say, along the direction away from the aforementioned rounded corner, the bottom surface 111 of the tool groove gradually approaches the tool head assembly bottom surface 211 and is inclined, and the angle formed by the two is 2.9°.

[0095] Embodiment 7

[0096] The blade in this embodiment is an improvement on the fifth embodiment, and the technical contents disclosed in the fifth embodiment will not be described repeatedly, and the contents disclosed in the fifth embodiment also belong to the contents disclosed in this embodiment.

[0097] The difference between the blades provided in this embodiment and the fifth embodiment is that: Figure 8 and Fig.10 As shown, h = 1.0mm, R = 0.06mm, through calculation, we know that the angle That is to say, along the direction away from the aforementioned rounded corner, the bottom surface 111 of the tool groove gradually approaches the tool head assembly bottom surface 211 and is inclined, and the angle formed by the two is 2.33°.

[0098] Embodiment 8

[0099] The blade in this embodiment is an improvement on the fifth embodiment, and the technical contents disclosed in the fifth embodiment will not be described repeatedly, and the contents disclosed in the fifth embodiment also belong to the contents disclosed in this embodiment.

[0100] The difference between the blades provided in this embodiment and the fifth embodiment is that: Figure 8 and Fig.10 As shown, h = 1.0mm, R = 0.1mm, through calculation, we know that the angle That is to say, along the direction away from the aforementioned rounded corner, the bottom surface 111 of the tool groove gradually approaches the tool head assembly bottom surface 211 and is inclined, and the angle formed by the two is 2.33°.

[0101] It should be noted that the structure of the blade provided in the present application is not limited to the above, and the following structure can also be adopted: a rounded corner is formed at the connection between the bottom surface 111 of the blade groove and at least one cutter head assembly side vertical surface 212, wherein the blade groove side vertical surface 112 is inclined relative to the first depth direction L1 of the blade groove 11 on its corresponding side, and along the direction away from the rounded corner, the blade groove side vertical surface 112 gradually approaches the cutter head assembly side vertical surface 212. At the same time, the bottom surface 111 of the blade groove is inclined relative to the second depth direction L2 of the blade groove 11 on its corresponding side, and along the direction away from the rounded corner, the bottom surface 111 of the blade groove gradually approaches the cutter head assembly bottom surface 211. In other words, the cutter head assembly side vertical surface 212 and the bottom surface 111 of the blade groove are inclined at the same time, and the specific selection is based on actual needs.

[0102] In addition, the thickness of the solder layer is not limited to 0.02 mm in the above embodiment, and can be reasonably selected within the range of 0.01-0.2 mm; the radius of the fillet can be reasonably selected within the range of 0.06-0.1 mm; the depth of the knife groove 11 can be reasonably selected within the range of 1.0-1.6 mm.

[0103] In addition, regarding the direction issues involved in the above embodiments, the first depth direction L1, the extension direction of the cutter head assembly side elevation 212, and the height direction of the base 1 are all the same, and the second depth direction L2 and the extension direction of the cutter head assembly bottom surface 211 of the cutter head 2 are all the same, and preferably, when the base 1 is placed horizontally, that is, the rhombus surface is parallel to the horizontal plane, the first depth direction L1, the extension direction of the cutter head assembly bottom surface 211 of the cutter head 2, and the height direction of the base 1 are all the same as the vertical direction, and the second depth direction L2 and the cutter head assembly bottom surface 211 of the cutter head 2 are the same as the horizontal direction.

[0104] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A blade, characterized in that: include: A base and a cutter head; wherein the base is formed with a cutter groove, and the top and at least one side of the cutter groove are both formed with openings; the cutter head is arranged in the cutter groove, and the two are connected by welding; The knife groove has a knife groove bottom surface and a knife groove side vertical surface, and the knife head has a knife head assembly bottom surface and a knife head assembly side vertical surface which are arranged perpendicularly, and the knife head assembly bottom surface and the knife groove bottom surface are arranged oppositely, and the knife head assembly side vertical surface and the knife groove side vertical surface are arranged oppositely; A fillet is formed at the connection between the bottom surface of the knife groove and the side elevation of the knife groove, wherein the side elevation of the knife groove is inclined relative to the first depth direction of the knife groove on its corresponding side, and along the direction away from the fillet, the side elevation of the knife groove is gradually arranged close to the tool head assembly side elevation, and / or wherein the bottom surface of the knife groove is inclined relative to the second depth direction of the knife groove on its corresponding side, and along the direction away from the fillet, the bottom surface of the knife groove is gradually arranged close to the tool head assembly bottom surface; A matching gap is formed between the tool head assembly bottom surface and the corresponding tool groove bottom surface, and between the tool head assembly side vertical surface and the corresponding tool groove side vertical surface, and the matching gap is filled with solder.

2. The blade according to claim 1, characterized in that The calculation formula of the inclination angle of the side elevation of the knife groove or the bottom surface of the knife groove is as follows: Among them, R is the radius of the fillet, h is the depth of the tool groove along the first depth direction or the depth of the tool groove along the second depth direction, a is the thickness of the solder layer located between the tool head and the tool groove and parallel to the tool head assembly side elevation or the tool head assembly bottom surface, and the units of the three are the same.

3. The blade according to claim 2, characterized in that The radius of the fillet is 0.06-0.1 mm; and / or The range of α is 0-15°.

4. The blade according to claim 2, characterized in that The depth of the knife groove is 1.0-1.6 mm.

5. The blade according to claim 2, characterized in that The thickness of the solder layer is 0.01-0.2 mm.

6. The blade according to claim 1, characterized in that The tool groove has a tool groove side elevation, and the tool head has a tool head assembly side elevation.

7. The blade according to claim 6, characterized in that The side elevation of the knife groove is inclined relative to the side elevation of the tool head assembly, or the bottom surface of the knife groove is inclined relative to the bottom surface of the tool head assembly.

8. The blade according to claim 1, characterized in that Along the height direction perpendicular to the base body, the cross section of the knife groove is triangular.

9. The blade according to claim 1, characterized in that The base body is prismatic, and the knife grooves are formed at two vertex angles arranged at intervals along the long diagonal line of the base body, and the knife head is arranged in any of the knife grooves.

10. The blade according to any one of claims 1 to 9, characterized in that The material of the substrate is cemented carbide; and / or the material of the cutter head is superhard material.

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