A new type of fast-feed superhard blade
By designing the insert fixing grooves on the tool body of the super-hard insert and setting an angle structure, the cutting edge of the super-hard insert forms the same angle with the horizontal plane, the problem of the blade being easily broken during high-speed cutting is solved, and the impact resistance and tool life are improved.
Patent Information
- Application Number
- CN202420326693.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-21
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-02-21
AI Technical Summary
During high-speed cutting, superhard inserts are easily subjected to oxidation wear, resulting in blade collapse, reduced life and increased cost.
A new fast-forward superhard insert is designed. By opening a blade fixing groove on the tool body and welding and fixing the superhard cutting head, the cutting edge and the horizontal plane form an angle α, and the cutting edge and the horizontal plane also form the same angle. The included angle α is from 10° to 80° to disassemble the impact force and reduce thermal wear.
Improves the impact resistance of superhard inserts during fast feed turning, reduces the probability of cracking, and reduces thermal wear, thereby extending the tool life.
Smart Images
Figure CN222696050U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of superhard blades, and in particular to a novel fast-feed superhard blade. Background Art
[0002] Superhard materials are widely used in cutting tools due to their high hardness and high wear resistance. Superhard cutting tools are mainly used for finishing and semi-finishing of materials such as hardened steel, cast iron, powder metallurgy, and non-ferrous metals. With the development of the manufacturing industry and the advancement of manufacturing technology, the requirements for cutting tools are getting higher and higher, and the application of superhard cutting tools is becoming more and more extensive.
[0003] During high-speed cutting, the back face of the superhard blade is in direct contact with the workpiece and is mainly subject to mechanical and physical wear; while the front face is mainly subject to chemical and thermal wear, resulting in the surface of the superhard material being extremely susceptible to oxidative wear during the processing process, which is reflected in the tool as blade chipping, resulting in a reduction in its life and an increase in cost. Utility Model Content
[0004] In order to improve the efficiency of superhard cutting tools during the processing process and make the blades have excellent impact resistance, the present application provides a new type of fast-feed superhard blade.
[0005] The present application provides a novel fast-feed superhard blade adopts the following technical solution:
[0006] A new type of fast-feed superhard blade comprises a tool body and a superhard cutter head. A blade fixing groove is provided at the end of the tool body. When the superhard cutter head is welded and fixed in the blade fixing groove, the front cutting surface of the superhard cutter head forms an angle α with the horizontal plane, and the cutting edge of the superhard cutter head also forms an angle α with the horizontal plane. The angle α is 10° to 80°. A screw mounting hole for installing the blade fixing screw is provided on the tool body.
[0007] By adopting the above technical scheme, when the superhard cutter head is welded and fixed in the blade fixing groove, the front cutting surface of the superhard cutter head forms an angle with the horizontal plane, that is, the cutting edge of the superhard cutter blade forms an angle with the horizontal plane. When the superhard cutter blade is fed and turned at an angle parallel to the horizontal plane, the impact force on the cutting edge will be divided into two impact components, and the impact force is dispersed at the cutting edge position, thereby improving the impact resistance of the superhard cutter blade during fast feed turning and reducing the probability of chipping caused by straight impact during superhard cutter blade turning. On the other hand, the cutting edge position where the cutter blade is installed can also have a heat distribution effect, which will not cause local heat concentration in the superhard cutter head, reduce thermal wear, and thus increase tool life.
[0008] Preferably, the blade fixing groove is an open groove formed by a positioning bottom surface and a positioning side surface, the positioning bottom surface is perpendicular to the positioning side surface, and the positioning bottom surface forms an angle θ with a horizontal plane, and the angle θ is 10° to 80°.
[0009] By adopting the above technical solution, the positioning bottom surface is also an inclined surface. When the superhard cutter head is welded and fixed in the blade fixing groove, the front cutting surface and cutting edge of the superhard cutter head form an angle with the horizontal plane, which is convenient for splitting the impact force into two impact components during feed cutting, thereby improving the impact resistance of the superhard blade.
[0010] Preferably, the front cutting surface of the superhard blade is parallel to the positioning bottom surface.
[0011] By adopting the above technical solution, the processing of the superhard cutter head and the cutter body is facilitated, so that when the superhard cutter is fixed in the cutter fixing groove, the angle between the front cutter face and the cutting edge and the horizontal plane can be guaranteed, which is convenient for processing and assembly.
[0012] Preferably, the angle between the front cutting surface of the superhard cutting head and the horizontal plane is 30°~45°.
[0013] By adopting the above technical solution, when the angle between the front cutting edge and the horizontal plane is set to 30°~45°, it is easier to process and turn, and at the same time makes the two split impact forces more uniform and consistent, making the force on the cutting edge more uniform, further reducing the probability of cutting edge chipping, and further reducing the probability of thermal wear at the cutting edge position.
[0014] Preferably, the novel fast-feed superhard blade is a diamond-shaped blade, and two superhard cutter heads are tiltedly fixed on the tool body and are located at opposite ends of the tool body.
[0015] By adopting the above technical solution, the shape of the blade is designed to be a diamond blade, which is more convenient for feed turning work and more convenient for installation of superhard cutter heads. By arranging superhard blades at both ends of the tool body, it is convenient for two-way use, reduces the frequency of tool change, improves turning efficiency, and is more economical.
[0016] Preferably, the superhard cutting head includes an arc connecting surface, two symmetrically arranged first forming surfaces and two symmetrically arranged second forming surfaces, the arc connecting surface is connected to the first forming surface, the back cutting surface is connected between the first forming surface and the front cutting surface, the front cutting surface and the back cutting surface form a cutting edge, an arc chamfered surface is formed between the arc connecting surface and the front cutting surface, an avoidance surface is connected between the second forming surface and the front cutting surface, the arc chamfered surface is smoothly connected to the back cutting surface, and an angle is formed between the avoidance surface and the back cutting surface.
[0017] By adopting the above technical scheme, since a certain obtuse angle is formed between the avoidance surface and the back tool surface instead of a smooth connection, the avoidance surface can be used to achieve the avoidance effect, thereby preventing the avoidance surface from interfering with the workpiece during the feed cutting process. An arc connection surface and an arc chamfered surface are set, and the arc chamfered surface and the back tool surface are smoothly connected. On the one hand, the shape design requirements of the diamond blade are met, and on the other hand, the section where the arc chamfered surface connects with the back tool surface can also undertake part of the cutting work, so that the superhard blade of the present application can adapt to more and wider cutting scenarios and have stronger functions.
[0018] Preferably, the cutting edge of the superhard cutting head is a straight cutting edge or a circular arc cutting edge.
[0019] By adopting the above technical solution, the cutting edge of the cutter head can be a straight edge or a circular arc edge, and can be projected onto the processing surface during the processing to achieve a finishing effect and meet the fast feed requirements.
[0020] Preferably, the material of the superhard cutter head is PCD, PCBN or CVD, and the material of the cutter body is cemented carbide.
[0021] By adopting the above technical solution, the superhard cutter head can be made of superhard materials such as PCD, PCBN or CVD, further improving the cutting resistance of the superhard blade of the present application.
[0022] In summary, the present application includes at least one of the following beneficial technical effects:
[0023] 1. The present application sets up a structure of a superhard blade. When the superhard blade is welded and fixed into the blade fixing groove, the cutting edge of the superhard blade can form an angle with the horizontal plane. When the superhard blade is turned, the impact force is split into two impact components, thereby improving the impact resistance of the superhard blade during fast feed turning and reducing the probability of chipping caused by straight impact during the turning process of the superhard blade; on the other hand, the position where the blade cutting edge is installed can also have a heat distribution effect, which will not cause local heat concentration in the superhard blade of the tool, reduce thermal wear, and thus increase the tool life;
[0024] 2. The present invention provides two superhard cutter heads at both ends of the cutter head body, thereby improving cutting efficiency, reducing the frequency of cutter changes, and being more economical;
[0025] 3. By forming a certain obtuse angle between the avoidance surface and the back tool surface, instead of a smooth connection, the avoidance surface can achieve the avoidance effect and avoid the interference of the avoidance surface on the workpiece during the feed cutting process. An arc connection surface and an arc chamfered surface are set, and the arc chamfered surface and the back tool surface are smoothly connected. On the one hand, it meets the shape design requirements of the diamond blade, and on the other hand, the section where the arc chamfered surface and the back tool surface are connected can also undertake part of the cutting work, so that the super-hard blade of the present application can adapt to more and wider cutting scenarios and have stronger functions. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a side view of a novel fast-feed superhard blade of the present application.
[0027] Figure 2 It is an exploded view of a novel fast-feed superhard blade of the present application.
[0028] Figure 3 It is a top view of a novel fast-feed superhard blade of the present application.
[0029] Figure 4 This is a schematic diagram to show the structure of the superhard cutting head.
[0030] Explanation of the accompanying drawings: 1. Tool body; 11. Blade fixing groove; 111. Positioning bottom surface; 112. Positioning side surface; 12. Screw mounting hole; 2. Superhard tool head; 21. Front cutting edge; 22. Cutting edge; 23. Arc connecting surface; 24. First forming surface; 25. Second forming surface; 26. Back cutting edge; 27. Avoidance surface; 28. Arc chamfered surface. DETAILED DESCRIPTION
[0031] The following is combined with Figure 1-4 This application is described in further detail.
[0032] The embodiment of the present application discloses a novel fast-feed superhard blade. Figure 1-Figure 3The new fast-feed superhard blade includes a tool body 1 and a superhard blade head 2. The tool body 1 is provided with a blade fixing groove 11 for the superhard blade head 2 to be embedded, and the tool body 1 is provided with a screw mounting hole 12 so as to be fixed to the tool handle by the blade fixing screw. When the superhard blade head 2 is fixed in the blade fixing groove 11, the front cutting surface 21 of the superhard blade head 2 forms an angle α with the horizontal plane, that is, the cutting edge 22 of the superhard blade head 2 also forms an angle α with the horizontal plane, and the angle α can be any angle between 10° and 80°. When the superhard blade of the present application is turned, the impact force is split into two impact components, thereby improving the impact resistance of the superhard blade during fast-feed turning and reducing the probability of chipping caused by direct impact during the turning process of the superhard blade; on the other hand, the position where the blade cutting edge 22 is installed also has a heat distribution effect, which will not cause local heat concentration in the superhard blade head 2 of the tool, reduce thermal wear, and thus improve the tool life.
[0033] The blade fixing groove 11 is an open groove formed by a positioning bottom surface 111 and a positioning side surface 112. The positioning bottom surface 111 is perpendicular to the positioning side surface 112, and the positioning bottom surface 111 forms an angle θ with the horizontal plane. The angle θ is also any angle between 10° and 80°. Since the positioning bottom surface 111 is also an inclined surface, when the superhard blade 2 is welded and fixed in the blade fixing groove 11, the front cutting surface 21 and the cutting edge 22 of the superhard blade 2 form an angle with the horizontal plane, which is convenient for splitting the impact force into two impact components during feed cutting, thereby improving the impact resistance of the superhard blade.
[0034] Furthermore, in order to facilitate the processing of the superhard cutter head 2 and the tool body 1, the front cutting surface 21 of the superhard blade is parallel to the positioning bottom surface 111, so that when the superhard blade is fixed in the blade fixing groove 11, the angle between the front cutting surface 21 and the cutting edge 22 and the horizontal plane can be guaranteed, which is convenient for processing and assembly.
[0035] Preferably, in the present application, the angles between the front cutting face 21 and the cutting edge 22 of the superhard cutter head 2 and the horizontal plane are both 30°~45°, which is easier to process and turn, and at the same time makes the two split impact forces more uniform and consistent, so that the force on the cutting edge 22 is more uniform, further reducing the probability of chipping of the cutting edge 22, and further reducing the probability of thermal wear at the cutting edge 22 position.
[0036] Reference Figure 4The superhard cutter head 2 includes an arc connection surface 23, two symmetrically arranged first forming surfaces 24, and two symmetrically arranged second forming surfaces 25. The arc connection surface 23 is connected to the first forming surface 24, the back cutting surface 26 is connected between the first forming surface 24 and the front cutting surface 21, the cutting edge 22 is located between the front cutting surface 21 and the back cutting surface 26, and a clearance surface 27 is connected between the second forming surface 25 and the front cutting surface 21, and an angle is formed between the clearance surface 27 and the back cutting surface 26. Since the clearance surface 27 and the back cutting surface 26 are not smoothly connected, the clearance effect can be achieved by the clearance surface, thereby preventing the clearance surface 27 from interfering with the workpiece during the feed cutting process. An arc chamfered surface 28 is formed between the arc connecting surface 23 and the front cutting surface 21. The smooth connection between the arc chamfered surface 28 and the back cutting surface 26 not only meets the shape design requirements of the diamond blade, but also enables the section where the arc chamfered surface 28 and the back cutting surface 26 connect to also undertake part of the cutting work, so that the superhard blade of the present application can adapt to more and wider cutting scenarios and have stronger functions.
[0037] Reference Figure 3 The superhard blade of the present application is a diamond blade. In order to reduce the frequency of tool change of the superhard blade and improve the turning efficiency, superhard blade heads 2 are provided at both ends of the tool body 1, which are convenient for bidirectional use and more economical. The cutting edge of the superhard blade head 2 is a straight blade or a circular blade, which can be projected onto the processing surface during the processing to achieve finishing effect and meet the fast feed requirements.
[0038] In order to improve the impact resistance of the superhard blade of the present application, the superhard cutter head 2 is made of PCD, PCBN or CVD material, and the material of the cutter body 1 is cemented carbide.
[0039] The implementation principle of a new type of fast-feed superhard blade in the embodiment of the present application is as follows: the present application designs the positioning bottom surface 111 of the blade fixing groove 11 to be an inclined surface that forms an angle with the horizontal plane, and sets the shape of the superhard cutter head 2 so that the cutting edge 22 of the superhard cutter head 2 forms an angle α with the horizontal plane. Therefore, when the superhard cutter blade of the present application is fed and turned at an angle parallel to the horizontal plane, the horizontal impact force received by the cutting edge 22 can be split into two impact components, thereby improving the impact resistance of the superhard cutter blade during fast-feed turning and reducing the probability of chipping caused by direct impact during the turning process of the superhard cutter blade; on the other hand, the position where the cutting edge 22 of the cutter blade is installed can also have a heat distribution effect, which will not cause local heat concentration in the superhard cutter head 2 of the cutter, reduce thermal wear, and thus increase the life of the cutter. By setting the angle between the cutting edge 22 and the horizontal plane to be between 30° and 45°, the two impact components are made more uniform, so that the force on the cutting edge 22 is more uniform, further reducing the probability of chipping of the cutting edge 22 and further reducing the probability of thermal wear at the cutting edge 22.
[0040] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A new type of fast-feed superhard blade, characterized by: The invention comprises a tool body (1) and a superhard tool head (2), wherein a blade fixing groove (11) is provided at the end of the tool body (1), and when the superhard tool head (2) is welded and fixed in the blade fixing groove (11), a front cutting surface (21) of the superhard tool head (2) forms an angle α with a horizontal plane, and a cutting edge (22) of the superhard tool head (2) also forms an angle α with a horizontal plane, wherein the angle α is 10° to 80°, and a screw mounting hole (12) for mounting a blade fixing screw is provided on the tool body (1).
2. The novel fast-feed superhard blade according to claim 1 is characterized in that: The blade fixing groove (11) is an open groove formed by a positioning bottom surface (111) and a positioning side surface (112), the positioning bottom surface (111) is perpendicular to the positioning side surface (112), and the positioning bottom surface (111) forms an angle θ with a horizontal plane, and the angle θ is 10° to 80°.
3. The novel fast-feed superhard blade according to claim 2 is characterized in that: The front cutting surface (21) of the superhard blade is parallel to the positioning bottom surface (111).
4. The novel fast-feed superhard blade according to claim 3 is characterized in that: The angle between the front cutting surface (21) of the superhard cutting head (2) and the horizontal plane is 30° to 45°.
5. The novel fast-feed superhard blade according to claim 1 is characterized in that: The novel fast-feed superhard blade is a diamond-shaped blade, and two superhard blade heads (2) are tiltedly fixed on the tool body (1) and are located at two opposite ends of the tool body (1).
6. The novel fast-feed superhard blade according to claim 1 is characterized in that: The superhard tool head (2) comprises an arc connection surface (23), two symmetrically arranged first forming surfaces (24) and two symmetrically arranged second forming surfaces (25), the arc connection surface (23) is connected to the first forming surface (24), a back cutting surface (26) is connected between the first forming surface (24) and the front cutting surface (21), the front cutting surface (21) and the back cutting surface (26) form a cutting edge (22), an arc chamfered surface (28) is formed between the arc connection surface (23) and the front cutting surface (21), a clearance surface (27) is connected between the second forming surface (25) and the front cutting surface (21), the arc chamfered surface (28) is smoothly connected to the back cutting surface (26), and an angle is formed between the clearance surface (27) and the back cutting surface (26).
7. The novel fast-feed superhard blade according to claim 1 is characterized in that: The cutting edge of the superhard blade head (2) is a straight cutting edge or a circular arc cutting edge.
8. The novel fast-feed superhard blade according to claim 1 is characterized in that: The material of the superhard cutter head (2) is PCD, PCBN or CVD, and the material of the cutter body (1) is cemented carbide.