High-precision long-service-life end edge profiling metal ceramic special grinding head

Abstract

The utility model discloses a high-precision long-service-life end edge profiling metal ceramic special grinding head which comprises a knife handle, a knife body is arranged at the front end of the knife handle, and a knife head is arranged at the front end of the knife body. A center cutting edge is arranged on the axis of the tool bit, a side cutting edge is arranged on one side of the center cutting edge, and a plurality of auxiliary cutting edges are arranged on one side of the side cutting edge. According to the high-precision long-service-life end edge profiling grinding head special for the metal ceramic, in the process of machining and milling the metal ceramic, the tool rotates around the axis of the tool, then the two working areas on the tool bit can mill the machining face, and in the milling process of the center cutting edge, the side cutting edge and the auxiliary cutting edge, the machining efficiency is greatly improved. Milling scraps can be discharged through the main scrap discharging grooves and the auxiliary scrap discharging grooves, certain distances are formed among the center cutting edge, the side cutting edges and the auxiliary cutting edges, heat dissipation is facilitated, meanwhile, heat concentration is avoided, and the situation that the cutter is abraded due to the fact that the temperature of the cutter head is too high is reduced.

Description

Technical Field

[0001] This utility model relates to the field of metal processing cutting tool technology, and in particular to a high-precision, long-life end-edge profile metal-ceramic special grinding head. Background Technology

[0002] Ceramic lithography, as a novel composite material, ingeniously combines the advantages of metals and ceramics, exhibiting outstanding comprehensive performance. It possesses both the toughness and good machinability of metals, and the high hardness, high wear resistance, high temperature resistance, and chemical stability of ceramics. This unique combination of properties makes cermets promising for applications in numerous fields.

[0003] In the aerospace field, cermets, with their excellent high-temperature resistance and fatigue resistance, are widely used in key components such as engine blades, small bearings, rocket throat liners, and inner liners, effectively improving the performance and safety of aircraft. In the equipment manufacturing industry, cermets are used to manufacture coatings, guide rollers, wear-resistant liners, PCB drill bits, molds, high-temperature bearings, and contacts, greatly improving the wear resistance and service life of equipment. In the building materials and mining sectors, cermets are indispensable in crusher hammers, drilling equipment drill bits, wear-resistant component working surfaces, and fans; their high hardness and wear resistance enable them to adapt to harsh working environments and improve production efficiency. In the machining field, cermet cutting tools are suitable for the finishing of steel materials, offering higher cutting efficiency and a longer service life compared to traditional tools.

[0004] When using traditional processing methods, the high hardness and brittleness of metal ceramics cause wear on the tool surface during processing, affecting the machining accuracy of the machined surface, resulting in poor surface quality and reduced processing efficiency. These problems seriously restrict the widespread application and industrialization of metal ceramics. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model provides a high-precision, long-life end-edge contour grinding head for metal ceramics. This tool has good thermal conductivity, achieving the technical effect of reducing tool wear and improving machining accuracy when processing metal ceramics.

[0006] To solve the above-mentioned technical problems and achieve the above-mentioned technical effects, this utility model is implemented through the following technical solution:

[0007] The technical solution of this utility model is: a high-precision, long-life end-edge contour metal-ceramic special grinding head, including a tool holder, a tool body fixedly installed at the front end of the tool holder, a tool head fixedly installed at the front end of the tool body, the tool head being hemispherical, and the tool body and the tool head being integrally formed;

[0008] A central cutting edge is provided on the axis of the cutter head, which divides the surface of the cutter head into two working areas. Each working area includes a side cutting edge provided on one side of the central cutting edge. An auxiliary cutting edge is provided on the side of the side cutting edge away from the central cutting edge. Multiple auxiliary cutting edges are provided at intervals along the length of the side cutting edge.

[0009] Furthermore, the two working areas are symmetrically arranged on the surface of the cutter head with the central cutting edge as the center line.

[0010] Furthermore, an auxiliary chip removal groove is formed between every two auxiliary cutting edges, and a main chip removal groove is formed between the side cutting edge and the center cutting edge.

[0011] Furthermore, the surface of the blade is provided with an extension blade, and multiple extension blades are provided, which are respectively fixedly connected to the bottom of the side blade and the auxiliary blade.

[0012] Furthermore, the side blade consists of a vertical portion and a curved portion.

[0013] Furthermore, the angle between the auxiliary blade on one side and the perpendicular portion of the side blade is 21°, and the angle between the auxiliary blade on the other side and the curved portion of the side blade is 18°.

[0014] Furthermore, five auxiliary blades are provided, with an angle of 18° between each pair of auxiliary blades.

[0015] Furthermore, the handle is made of cemented carbide.

[0016] Furthermore, the central blade is composed of an upper half and a lower half, and the upper half and the lower half are designed in a mirror image.

[0017] Furthermore, the outer ring surface of the handle is smooth, and the tail of the handle is chamfered.

[0018] The beneficial technical effects of this utility model are as follows: By setting a central cutting edge, a side cutting edge, and an auxiliary cutting edge in the working area, the tool rotates around its own axis during the machining of metal ceramics. Subsequently, the two working areas on the tool head mill the machining surface. During the milling process, the milling chips from the central cutting edge, the side cutting edge, and the auxiliary cutting edge can be discharged through the main chip removal groove and the auxiliary chip removal groove. Furthermore, the setting of the main chip removal groove and the auxiliary chip removal groove also ensures that there is a certain distance between the central cutting edge, the side cutting edge, and the auxiliary cutting edge, which facilitates heat dissipation and avoids heat concentration, reducing the possibility of tool wear due to excessive temperature. This also avoids the problem of reduced machining accuracy caused by wear on the tool surface. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0020] Figure 2 This is a three-dimensional structural diagram of the blade head and blade body of this utility model;

[0021] Figure 3 This is a side view schematic diagram of the structure of the auxiliary blade and the central blade of this utility model.

[0022] The numbers and letters in the diagram represent the names of the corresponding components:

[0023] 1. Blade; 2. Handle; 3. Center blade; 4. Side blade; 5. Secondary blade; 6. Main chip groove; 7. Secondary chip groove; 8. Blade tip; 9. Extension blade. Detailed Implementation

[0024] In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0025] See appendix Figures 1-3 As shown, a high-precision, long-life end-edge contour metal-ceramic grinding head includes a shank 2 made of cemented carbide. A blade 1 is fixedly mounted on the front end of the shank 2, and a cutting head 8 is fixedly mounted on the front end of the blade 1. The cutting head 8 is hemispherical, and the blade 1 and the cutting head 8 are integrally formed. A central cutting edge 3 is arranged on the axis of the cutting head 8, which divides the surface of the cutting head 8 into two working areas. Each working area includes a side cutting edge 4 on one side of the central cutting edge 3. An auxiliary cutting edge 5 is arranged on the side of the side cutting edge 4 away from the central cutting edge 3. Multiple auxiliary cutting edges 5 are spaced apart along the length of the side cutting edge 4. The two working areas are symmetrically arranged on the surface of the cutting head 8 with the central cutting edge 3 as the center line. An auxiliary chip removal groove 7 is formed between every two auxiliary cutting edges 5, and a main chip removal groove 6 is formed between the side cutting edge 4 and the central cutting edge 3.

[0026] This cutting tool is suitable for milling shallow grooves and cavities. During the machining process, the machining center drives the tool to rotate, causing it to rotate around its own axis. Subsequently, the two working areas on the tool head mill the machined surface. The center cutting edge 3, the side cutting edge 4, and the auxiliary cutting edge 5 in the working areas are used in the machining of metal and ceramics. During the milling process, the chips generated by the center cutting edge 3, the side cutting edge 4, and the auxiliary cutting edge 5 can be discharged through the main chip removal groove 6 and the auxiliary chip removal groove 7. The design of the main chip removal groove 6 and the auxiliary chip removal groove 7 also ensures that there is a certain distance between the center cutting edge 3, the side cutting edge 4, and the auxiliary cutting edge 5, which facilitates heat dissipation and avoids heat concentration. This prevents the cutting edge from wearing due to excessive tool head temperature, resulting in lower precision of the machined surface and affecting machining efficiency.

[0027] Furthermore, the surface of the cutter body 1 is provided with an extension blade 9, and multiple extension blades 9 are provided. The multiple extension blades 9 are fixedly connected to the bottom of the side blade 4 and the auxiliary blade 5 respectively. The extension blades 9 can be used by the tool to perform hole wall milling and finishing on the workpiece, so as to make up for the problem that the center blade 3, the side blade 4 and the auxiliary blade 5 cannot contact the hole wall.

[0028] Furthermore, the side blade 4 is composed of a vertical part and a curved part, and the central blade 3 is composed of an upper half and a lower half, with the upper half and the lower half being mirror images of each other, resulting in open ends of the main chip removal groove 6.

[0029] By combining the vertical and curved parts of the side blade 4 with the upper and lower halves of the central blade 3, the openings at both ends of the main chip removal groove 6 are larger than those at the center, which facilitates the discharge of waste chips and also allows the cooling oil to better cover the surface of the cutter head 8, thereby improving heat dissipation efficiency.

[0030] Furthermore, the angle between the auxiliary blade 5 and the vertical part of the side blade 4 is 21°, and the angle between the auxiliary blade 5 and the curved part of the side blade 4 is 18°. There are five auxiliary blades 5, and the angle between every two auxiliary blades 5 is 18°.

[0031] By setting the angles as described above, there is a certain space between the auxiliary blade 5 and the side blade 4, which can be used for chip removal and also to increase the heat dissipation area.

[0032] Furthermore, the outer ring surface of the tool holder 2 is designed to be smooth, and the tail of the tool holder 2 is designed to be chamfered. The chamfered design at the tail of the tool holder 2 facilitates the fixed connection between the tail end of the tool holder 2 and the mounting base of the machining center.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A high-precision long-life end blade profiling cermet special grinding head, characterized in that, Include: The shank (2) is fixedly installed with the blade body (1) at the front end, the blade head (8) is fixedly installed at the front end of the blade body (1), the blade head (8) is provided in a semispherical shape, and the blade body (1) and the blade head (8) are provided integrally. The center blade (3) is arranged on the axis of the blade head (8), the center blade (3) divides the surface of the blade head (8) into two working areas, and the working area includes the side blade (4) arranged on one side of the center blade (3), the side blade (4) is provided with an auxiliary blade (5) away from the center blade (3), and the auxiliary blade (5) is arranged in multiple along the length direction of the side blade (4).

2. The high-precision long-life end blade profiling cermet special grinding head according to claim 1, characterized in that, Two working areas are symmetrically arranged on the surface of the blade head (8) with the center blade (3) as the center line.

3. The high-precision long-life end blade profiling cermet special grinding head according to claim 1, characterized in that, An auxiliary chip removal groove (7) is formed between every two auxiliary blades (5), and a main chip removal groove (6) is formed between the side blade (4) and the center blade (3).

4. The high-precision long-life end blade profiling cermet special grinding head according to claim 1, characterized in that, The surface of the blade body (1) is provided with an extension blade (9), the extension blade (9) is provided in multiple, and the multiple extension blades (9) are respectively fixedly connected with the bottom of the side blade (4) and the auxiliary blade (5).

5. The high-precision long-life end blade profiling cermet special grinding head according to claim 1, characterized in that, The side blade (4) is composed of a vertical part and a curved part.

6. The high-precision long-life end blade profiling cermet special grinding head according to claim 1, characterized in that, The interval angle between one side of the auxiliary blade (5) and the vertical part of the side blade (4) is 21°, and the interval angle between the other side of the auxiliary blade (5) and the curved part of the side blade (4) is 18°.

7. The high-precision long-life end blade profiling cermet special grinding head according to claim 1, characterized in that, The auxiliary blade (5) is provided with five, and the interval angle between every two auxiliary blades (5) is 18°.

8. The high-precision long-life end blade profiling cermet special grinding head according to claim 1, characterized in that, The material of the shank (2) is hard alloy.

9. The high-precision long-life end blade profiling cermet special grinding head according to claim 1, characterized in that, The center blade (3) is composed of an upper half and a lower half, and the upper half and the lower half are mirror image designed.

10. The high-precision long-life end blade profiling cermet special grinding head according to claim 1, characterized in that, The outer ring surface of the shank (2) is designed to be smooth, and the tail part of the shank (2) is designed to be chamfered.

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