Wear-resistant numerical control coated cutter

Abstract

The utility model provides a wear-resistant numerical control coating cutter which comprises a cutter handle and a cutter holder, a mounting groove is formed in the middle of the cutter handle, the cutter holder is embedded in the mounting groove, a positioning groove is formed in the upper surface of the cutter holder, a gasket is arranged in the positioning groove, and a blade is arranged on the gasket. The length of the tool apron is smaller than that of the tool handle, the rear end of the tool apron abuts against the tool handle, and a clamping assembly is arranged between the tool apron and the tool handle. The blade comprises a base layer, a reinforcing layer coated outside the base layer and a wear-resistant layer coated outside the reinforcing layer. The cutter holder is embedded in the cutter handle, the cutter holder and the cutter handle are arranged through the clamping assembly, the stability of the cutter holder is improved, shaking generated in the cutting process of the blade is prevented, disassembly and assembly are convenient, and the strength of the blade is improved and the service life of the blade is prolonged through the arrangement of the base layer, the strengthening layer and the wear-resistant layer.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control tools, in particular to a wear-resistant numerical control coating tool. Background Art

[0002] CNC tools are tools used for cutting processing in mechanical manufacturing, also known as cutting tools. At the same time, "CNC tools" include accessories such as tool holders and tool holders in addition to cutting blades. The working part of the tool is the part that generates and processes chips.

[0003] With the increasing requirements for the automation level and machining accuracy of cutting processing, the requirements for the wear resistance, impact resistance and hardness of CNC tools are also getting higher and higher. However, the existing CNC cutting tools have the disadvantages of operating at high speeds, easy breakage, aging and short service life. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a wear-resistant CNC coated tool to solve the problems of the prior art that the cutting tools are easy to break, age and have a short service life.

[0005] In order to achieve the above purpose and other related purposes, the utility model provides the following technical solutions:

[0006] A wear-resistant CNC coated tool comprises a tool handle and a tool seat, wherein a mounting groove is provided in the middle of the tool handle, the tool seat is embedded in the mounting groove, a positioning groove is provided on the upper surface of the tool seat, a gasket is provided in the positioning groove, and a blade is provided on the gasket; the length of the tool seat is less than the length of the tool handle, the rear end of the tool seat abuts the tool handle, and a clamping assembly is provided between the tool seat and the tool handle; the blade comprises a base layer, a strengthening layer coated on the outside of the base layer, and a wear-resistant layer coated on the outside of the strengthening layer.

[0007] To implement the above technical solution, the knife seat described in the present application is embedded in the knife handle, and a clamping assembly is provided between the knife seat and the knife handle to improve the stability of the knife seat, prevent shaking during the cutting process of the blade, and facilitate disassembly and assembly. The blade is provided with a base layer, a strengthening layer and a wear-resistant layer to improve the strength and service life of the blade.

[0008] In one embodiment of the present invention, the base layer is high-speed steel or cemented carbide; the strengthening layer is titanium nitride, chromium nitride or gallium nitride; and the wear-resistant layer is hydrogenated amorphous carbon, tetrahedral amorphous carbon, nanocrystalline diamond or silicon-germanium alloy.

[0009] To realize the above technical solution, cemented carbide is mainly composed of tungsten-cobalt alloy, tungsten-titanium-cobalt alloy, tungsten-titanium-tantalum-cobalt alloy, etc. Cemented carbide has the characteristics of high hardness, high strength, and wear resistance. The main components of high-speed steel include carbon, tungsten, molybdenum, cobalt, chromium, etc. High-speed steel has the characteristics of high hardness, strong toughness, good wear resistance, etc., and is suitable for manufacturing high-load and high-speed cutting tools. Titanium nitride, chromium nitride or gallium nitride can greatly improve the strength and hardness of the blade; by setting the surface wear-resistant layer, the wear resistance and service life of the blade are improved.

[0010] In an embodiment of the present invention, the engaging assembly includes positioning bosses disposed at upper and lower ends of the knife seat, and positioning grooves opened in the mounting groove and capable of embedding the positioning bosses.

[0011] To implement the above technical solution, the positioning boss can slide along the positioning groove, and the knife seat is embedded in the knife handle, thereby improving the stability of the knife seat.

[0012] In one embodiment of the utility model, the blade, gasket and knife seat are each provided with a first positioning hole, and a first positioning pin is passed through the first positioning hole; the knife handle and the knife seat are provided with a second positioning hole, and a second positioning pin is passed through the second positioning hole.

[0013] To implement the above technical solution, the blade, gasket and tool holder are fixedly connected by a first positioning pin, and the tool holder and the tool handle are fixedly connected by a second positioning pin, thereby improving the stability of the connection between the various parts of the tool.

[0014] In one embodiment of the utility model, the blade includes a plurality of cutting units distributed in a circular array, the cutting unit includes an upper surface, a lower surface and two side surfaces connecting the upper surface and the lower surface, and two adjacent side surfaces are connected by an arc surface to form a tip radius; the side surfaces intersect with the upper surface to form two main cutting edges, and the arc surface intersects with the upper surface to form an arc cutting edge.

[0015] To implement the above technical solution, the blade is composed of a plurality of cutting units. When one cutting unit is worn, the blade can be rotated and another cutting unit can be used for cutting, thereby increasing the service life of the blade.

[0016] In one embodiment of the utility model, the upper surface is provided with a main chip breaker groove corresponding to the main cutting edge, and the upper surface is provided with an arc chip breaker groove corresponding to the arc cutting edge. The main chip breaker groove and the arc chip breaker groove are smoothly connected to form a chip breaking surface.

[0017] By implementing the above technical solution, the main chip breaker groove and the arc chip breaker groove can accommodate more cutting fluid so that the cutting fluid can fully contact the workpiece and the blade, which is beneficial to reduce cutting heat and reduce the friction between the cutting and the main cutting edge and the arc cutting edge, thereby further slowing down the wear of the blade and increasing the service life of the blade.

[0018] As described above, the utility model is a wear-resistant CNC coated tool, which has the following beneficial effects: the tool seat described in the present application is embedded in the tool handle, and a clamping assembly is arranged between the tool seat and the tool handle to improve the stability of the tool seat, prevent shaking during the cutting process of the blade, and facilitate disassembly and assembly. The blade is provided with a base layer, a strengthening layer and a wear-resistant layer to improve the strength and service life of the blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Shown is a schematic diagram of the structure of the utility model.

[0020] Figure 2 Shown is a schematic diagram of the structure of the tool handle.

[0021] Figure 3 Shown is an exploded view of the toolholder, shim, and insert.

[0022] Figure 4 Shown is a schematic diagram of the structure of the blade.

[0023] Component number description

[0024] 1. Handle; 2、 Knife holder; 3、 Mounting slot; 4、 Positioning slot; 5、 Gasket; 6、 blade; 7、 Positioning boss; 8. Positioning groove; 9、 a first positioning hole; 10、 A second positioning hole; 11、 upper surface; 12、 side; 13、 Tip radius; 14. Main cutting edge; 15、 Arc cutting edge; 16、 Main chip breaker; 17、 Arc chip breaker. DETAILED DESCRIPTION

[0025] The following specific embodiments illustrate the implementation of the present invention, and those familiar with the technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0026] See also Figures 1 to 4The utility model provides a wear-resistant CNC coated tool, comprising a tool handle 1 and a tool seat 2, a mounting groove 3 is provided in the middle of the tool handle 1, the tool seat 2 is embedded in the mounting groove 3, a positioning groove 4 is provided on the upper surface 11 of the tool seat 2, a gasket 5 is provided in the positioning groove 4, and a blade 6 is provided on the gasket 5; the length of the tool seat 2 is less than the length of the tool handle 1, the rear end of the tool seat 2 abuts against the tool handle 1, and a clamping component is provided between the tool seat 2 and the tool handle 1; the blade 6 comprises a base layer, a strengthening layer coated on the outside of the base layer, and a wear-resistant layer coated on the outside of the strengthening layer.

[0027] The knife seat 2 described in the present application is embedded in the knife handle 1, and a clamping assembly is arranged between the knife seat 2 and the knife handle 1 to improve the stability of the knife seat 2, prevent shaking during the cutting process of the blade 6, and facilitate disassembly and assembly. The blade 6 is provided with a base layer, a strengthening layer and a wear-resistant layer to improve the strength and service life of the blade 6.

[0028] The base layer is high-speed steel or cemented carbide; the strengthening layer is titanium nitride, chromium nitride or gallium nitride; the wear-resistant layer is hydrogenated amorphous carbon, tetrahedral amorphous carbon, nanocrystalline diamond or silicon-germanium alloy. Cemented carbide is mainly composed of tungsten-cobalt alloy, tungsten-titanium-cobalt alloy, tungsten-titanium-tantalum-cobalt alloy, etc. Cemented carbide has the characteristics of high hardness, high strength and wear resistance. The main components of high-speed steel include carbon, tungsten, molybdenum, cobalt, chromium, etc. High-speed steel has the characteristics of high hardness, strong toughness and good wear resistance, and is suitable for manufacturing high-load and high-speed cutting tools. Titanium nitride, chromium nitride or gallium nitride can greatly improve the strength and hardness of the blade 6; by setting the surface wear-resistant layer, the wear resistance and service life of the blade 6 are improved.

[0029] The clamping assembly includes positioning bosses 7 disposed at the upper and lower ends of the knife seat 2, and positioning grooves 8 opened in the mounting grooves 3 and capable of embedding the positioning bosses 7. The positioning bosses 7 can slide along the positioning grooves 8, and the knife seat 2 is embedded in the knife handle 1, thereby improving the stability of the knife seat 2.

[0030] The blade 6, the gasket 5 and the knife seat 2 are each provided with a first positioning hole 9, and a first positioning pin is passed through the first positioning hole 9; the knife handle 1 and the knife seat 2 are provided with a second positioning hole 10, and a second positioning pin is passed through the second positioning hole 10.

[0031] The blade 6, the gasket 5 and the tool holder 2 are fixedly connected by a first positioning pin, and the tool holder 2 and the tool handle 1 are fixedly connected by a second positioning pin, thereby improving the stability of the connection between the various parts of the tool.

[0032] The blade 6 includes a plurality of cutting units distributed in a circular array, and the cutting unit includes an upper surface 11, a lower surface, and two side surfaces 12 connecting the upper surface 11 and the lower surface, and two adjacent side surfaces 12 are connected by an arc surface to form a tip fillet 13; the side surfaces 12 intersect with the upper surface 11 to form two main cutting edges 14, and the arc surface intersects with the upper surface 11 to form an arc cutting edge 15. The blade 6 is composed of a plurality of cutting units, and when a cutting unit is worn, the blade 6 can be rotated and another cutting unit can be used for cutting, thereby increasing the service life of the blade 6.

[0033] The upper surface 11 is provided with a main chip breaker groove 16 corresponding to the main cutting edge 14, and the upper surface 11 is provided with a circular chip breaker groove 17 corresponding to the arc cutting edge 15. The main chip breaker groove 16 and the circular chip breaker groove 17 are smoothly connected to form a chip breaking surface. The main chip breaker groove 16 and the circular chip breaker groove 17 can accommodate more chip fluid so that the cutting fluid is fully in contact with the workpiece and the blade 6, which is beneficial to reduce cutting heat and reduce the friction between the cutting and the main cutting edge 14 and the circular cutting edge 15, thereby further slowing down the wear of the blade 6 and increasing the service life of the blade 6.

[0034] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. All equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical ideas disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A wear-resistant CNC coated tool, comprising a tool handle (1) and a tool seat (2), characterized in that: The middle part of the knife handle (1) is provided with a mounting groove (3), the knife seat (2) is embedded in the mounting groove (3), the upper surface (11) of the knife seat (2) is provided with a positioning groove (4), a gasket (5) is provided in the positioning groove (4), and a blade (6) is provided on the gasket (5); The length of the knife seat (2) is smaller than the length of the knife handle (1), the rear end of the knife seat (2) abuts against the knife handle (1), and a clamping assembly is provided between the knife seat (2) and the knife handle (1); The blade (6) comprises a base layer, a reinforcement layer coated on the outside of the base layer, and a wear-resistant layer coated on the outside of the reinforcement layer.

2. The wear-resistant CNC coated tool according to claim 1, characterized in that: The base layer is high speed steel or cemented carbide; The strengthening layer is titanium nitride, chromium nitride or gallium nitride; The wear-resistant layer is hydrogenated amorphous carbon, tetrahedral amorphous carbon, nanocrystalline diamond or silicon-germanium alloy.

3. The wear-resistant CNC coated tool according to claim 1, characterized in that: The clamping assembly comprises positioning bosses (7) arranged at the upper and lower ends of the knife seat (2), and a positioning groove (8) opened in the installation groove (3) and capable of embedding the positioning bosses (7).

4. The wear-resistant CNC coated tool according to claim 1, characterized in that: The blade (6), the gasket (5) and the blade seat (2) are each provided with a first positioning hole (9) correspondingly, and a first positioning pin is passed through the first positioning hole (9); A second positioning hole (10) is provided on the knife handle (1) and the knife seat (2), and a second positioning pin is passed through the second positioning hole (10).

5. The wear-resistant CNC coated tool according to claim 1, characterized in that: The blade (6) comprises a plurality of cutting units distributed in a circular array, the cutting units comprising an upper surface (11), a lower surface, and two side surfaces (12) connecting the upper surface (11) and the lower surface, and two adjacent side surfaces (12) are connected by an arc surface to form a blade tip fillet (13); The side surface (12) intersects with the upper surface (11) to form two main cutting edges (14), and the arc surface intersects with the upper surface (11) to form an arc cutting edge (15).

6. The wear-resistant CNC coated tool according to claim 5, characterized in that: The upper surface (11) is provided with a main chip breaker groove (16) corresponding to the main cutting edge (14), and the upper surface (11) is provided with a circular chip breaker groove (17) corresponding to the circular arc cutting edge (15). The main chip breaker groove (16) and the circular arc chip breaker groove (17) are smoothly connected to form a chip breaking surface.

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