Double-edge PCD cutter

Abstract

The utility model relates to the technical field of milling cutters, and discloses a double-edge PCD cutter which comprises a cutter handle, two spirally-rising cutting edges are fixedly connected to the top of the cutter handle, the tops of the two cutting edges are coated with hard coatings, a first cooling liquid spraying hole is formed between the two cutting edges, and a second cooling liquid spraying hole is formed between the two cutting edges. A second cooling liquid spraying hole and a third cooling liquid spraying hole are formed in the lower ends of the two blades correspondingly, a mounting clamping shaft is fixedly connected to the lower end of the side face of the cutter handle, the bottom of the cutter handle is of an open structure and provided with a threaded groove, the bottom of the cutter handle is in threaded connection with a mounting base, and a cooling liquid channel is formed in the top of an inner cavity of the cutter handle. The tool bit is coated with the hard coating, the sharpness and the precision of the tool can be kept for a long time, cooling liquid can be sprayed to the tool bit in a faster and larger-area mode through the special cooling liquid spraying holes, and the heat dissipation efficiency of the cooling liquid is improved when the tool bit works.

Description

Technical Field

[0001] The utility model relates to the technical field of milling cutters, in particular to a double-edged PCD cutter. Background Art

[0002] Double-edged PCD tools refer to double-edged tools made of polycrystalline diamond (PCD) materials. Polycrystalline diamond (PCD) is a superhard material with the advantages of high hardness, high wear resistance, and high impact resistance. Therefore, it is widely used in the field of cutting and processing. Double-edged PCD tools can be used for high-speed cutting, precision cutting, drilling, milling and other processing operations, and have the advantages of high efficiency, high precision, and high durability. Due to the extremely high hardness of PCD materials, it can significantly improve the processing efficiency, and has good wear resistance and impact resistance, which can extend the service life of the tool. In the process of processing materials, PCD tools will generate a lot of cutting heat due to the friction between the chips and the tool. If the heat cannot be dissipated in time, the tool temperature will rise, which will cause tool wear.

[0003] The existing cooling method generally uses coolant to cool the tool head when it is working. However, the existing coolant has the problem of low efficiency in practical applications, which makes the heat of the tool unable to dissipate in time, which not only shortens the service life of the tool, but also affects the processing quality. For this reason, we propose a double-edged PCD tool. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a double-edged PCD tool to solve the above-mentioned problems.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a double-edged PCD tool, comprising a tool handle, the top of which is fixedly connected to two spirally ascending blades, the tops of the two blades are coated with a hard coating, a coolant spray hole 1 is provided between the two blades, and a coolant spray hole 2 and a coolant spray hole 3 are respectively provided at the lower ends of the two blades, a mounting clamping shaft is fixedly connected to the lower end of the side of the tool handle, the bottom of the tool handle is an open structure and is provided with a threaded groove, the bottom of the tool handle is threadedly connected to a mounting base, and a coolant channel is provided at the top of the inner cavity of the tool handle.

[0008] Preferably, the hard coating is made of titanium carbonitride and is coated on the top of the two blades by physical vapor deposition.

[0009] Preferably, the second coolant spray hole and the third coolant spray hole are symmetrically distributed, and the second coolant spray hole and the third coolant spray hole are both conical elongated holes.

[0010] Preferably, the coolant channel is in the shape of a truncated cone-shaped through groove whose diameter gradually decreases from bottom to top, and the coolant channel is connected to the coolant spray hole 1, the coolant spray hole 2 and the coolant spray hole 3.

[0011] Preferably, a cooling liquid inlet hole penetrating through upper and lower sides is provided on the mounting base.

[0012] (III) Beneficial effects

[0013] Compared with the prior art, the utility model provides a double-edged PCD tool with the following beneficial effects:

[0014] 1. This double-edged PCD tool can increase the cutting speed and feed speed by coating the blade with a hard coating, while maintaining the sharpness and accuracy of the tool and extending the service life of the device.

[0015] 2. The double-edged PCD tool allows the coolant to be sprayed onto the cutter head faster and over a larger area through the coolant spray hole 1, the coolant spray hole 2 and the coolant spray hole 3, thereby expanding the heat dissipation area, improving the heat dissipation effect, lowering the temperature during cutting, reducing tool wear, and further improving tool life and processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a top view of the blade of the utility model;

[0018] Figure 3 This is a schematic diagram of the section structure of the handle and blade of the utility model;

[0019] Figure 4 This is a schematic diagram of the installation base of the utility model.

[0020] In the figure: 1. Tool handle; 2. Blade; 3. Hard coating; 4. Coolant spray hole 1; 5. Coolant spray hole 2; 6. Coolant spray hole 3; 7. Mounting clamping shaft; 8. Mounting base; 9. Threaded groove; 10. Coolant inlet hole; 11. Coolant channel. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 A double-edged PCD tool comprises a tool handle 1, two spirally ascending blades 2 are fixedly connected to the top of the tool handle 1, the tops of the two blades 2 are coated with a hard coating 3, a coolant spray hole 1 4 is provided between the two blades 2, and a coolant spray hole 2 5 and a coolant spray hole 3 6 are respectively provided at the lower ends of the two blades 2, a mounting clamping shaft 7 is fixedly connected to the lower end of the side of the tool handle 1, the bottom of the tool handle 1 is an open structure and is provided with a threaded groove 9, the bottom of the tool handle 1 is threadedly connected with a mounting base 8, and a coolant channel 11 is provided at the top of the inner cavity of the tool handle 1.

[0023] Furthermore, the material of the hard coating 3 is titanium carbonitride, which is coated on the top of the two cutting edges 2 by physical vapor deposition. The titanium carbonitride coating has high hardness and low friction coefficient, which can significantly improve the wear resistance of the tool and reduce the cutting force.

[0024] Furthermore, the coolant spray hole 2 5 and the coolant spray hole 3 6 are symmetrically distributed. The coolant spray hole 2 5 and the coolant spray hole 3 6 are both conical slender holes. The conical slender holes can allow the coolant to be sprayed out in a centrifugal manner and increase the spraying speed, forming a longer jet, forming a certain angle and speed, thereby improving the heat dissipation effect.

[0025] Furthermore, the shape of the coolant channel 11 is a truncated cone-shaped through groove whose diameter gradually decreases from bottom to top, and the coolant channel 11 is connected to the coolant spray hole 1 4 , the coolant spray hole 2 5 and the coolant spray hole 3 6 .

[0026] Furthermore, a coolant inlet hole 10 penetrating the upper and lower sides is provided on the mounting base 8, and the coolant inlet hole 10 is used for spraying coolant through a coolant spray head at the rear end of the device.

[0027] Working principle: When using the device to cut an object, first install it on the corresponding milling machine by installing the clamping shaft 7 and the mounting base 8, and connect the end of the coolant channel 11 away from the inner cavity of the tool handle 1 to the coolant nozzle; when the device starts to work, the hard coating 3 coated on the top of the blade 2 has high hardness, high wear resistance and good oxidation resistance, which can effectively improve the cutting speed and feed speed of the blade 2, while maintaining the sharpness and accuracy of the tool and extending the service life of the blade 2; during cutting, the coolant enters the inner cavity of the tool handle 1 through the coolant inlet hole 10 and flows into the cooling In the liquid channel 11, due to the shape of the coolant channel 11, when the coolant passes through the coolant channel 11, a certain pressure will be generated due to the narrowing, forcing the coolant to flow faster. Then the coolant is sprayed toward the cutter head through the coolant spray hole 1 4, the coolant spray hole 2 5 and the coolant spray hole 3 6. The shapes of the coolant spray hole 2 5 and the coolant spray hole 3 6 will further accelerate the spraying speed of the coolant and form a longer jet. Under the influence of the rotating centrifugal force, the accelerated coolant flows quickly and evenly toward the cutter head, thereby greatly increasing the heat dissipation area of ​​the coolant and improving the heat dissipation effect.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-edged PCD tool, comprising a tool handle (1), characterized in that: The top of the tool handle (1) is fixedly connected to two spirally ascending blades (2), the tops of the two blades (2) are coated with a hard coating (3), a first coolant spray hole (4) is provided between the two blades (2), and a second coolant spray hole (5) and a third coolant spray hole (6) are provided at the lower ends of the two blades (2), a mounting clamping shaft (7) is fixedly connected to the lower end of the side of the tool handle (1), the bottom of the tool handle (1) is an open structure and is provided with a threaded groove (9), the bottom of the tool handle (1) is threadedly connected to a mounting base (8), and a coolant channel (11) is provided at the top of the inner cavity of the tool handle (1).

2. A double-edged PCD tool according to claim 1, characterized in that: The material of the hard coating (3) is titanium carbonitride, and is coated on the top of the two blades (2) by means of physical vapor deposition.

3. A double-edged PCD tool according to claim 1, characterized in that: The second coolant spray hole (5) and the third coolant spray hole (6) are symmetrically distributed, and the second coolant spray hole (5) and the third coolant spray hole (6) are both conical elongated holes.

4. A double-edged PCD tool according to claim 3, characterized in that: The coolant channel (11) is in the shape of a truncated cone-shaped through groove whose diameter gradually decreases from bottom to top, and the coolant channel (11) is connected to the coolant spray hole 1 (4), the coolant spray hole 2 (5) and the coolant spray hole 3 (6).

5. A double-edged PCD tool according to claim 1, characterized in that: The mounting base (8) is provided with a cooling liquid inlet hole (10) penetrating the upper and lower sides.

Images