Monocrystal diamond forming milling cutter

Abstract

The utility model discloses a single crystal diamond forming milling cutter which comprises a cutter handle part, and a cutter head bonding part with a curved bonding surface in the radial direction is arranged at one end of the cutter handle part; a tool bit structure which is arc-shaped in the radial direction is arranged on the periphery of the curved bonding surface of the tool bit bonding part; the tool bit structure comprises an arc-shaped contour cutting face in the radial direction, and a first axial end point and a second axial end point of the arc-shaped contour cutting face are asymmetric. The second axial end point extends out of the cutter handle part, so that the arc-shaped contour cutting surface is an arc-shaped contour cutting surface with an asymmetric contour; an axial cutting surface is arranged in the axial direction of the first axial end point, and an axial cutting blade extending out of the tool bit bonding part is arranged on the axial cutting surface; and the radial cutting blade is arranged at the radial end part of the arc-shaped contour cutting surface. According to the utility model, the contour precision and light transmission of a milled product are ensured, and a high-precision laser cutting forming design is adopted, so that the product can reach a required spline curve shape at one time, and the surface of the product has very bright appearance quality.

Description

Technical Field

[0001] The utility model relates to the field of diamond milling cutter processing, in particular to a single crystal diamond forming milling cutter. Background Art

[0002] Diamond forming milling cutter is a milling cutter made of diamond material, mainly used for processing materials with high hardness, high wear resistance and high thermal conductivity, such as graphite, ceramics, glass, gemstone, cemented carbide, etc.

[0003] Due to the extremely high hardness and wear resistance of diamond, diamond profile milling cutters can remain sharp for a longer time when processing these high-hardness materials, thereby improving processing efficiency and processing quality. In addition, diamond profile milling cutters can also withstand high temperatures and high pressures, so they have better stability and durability during processing.

[0004] The application range of diamond forming milling cutters is very wide, and they can be used in various processing equipment, such as CNC machine tools, engraving machines, grinders, etc. At the same time, diamond forming milling cutters can also be customized according to different processing requirements, such as different shapes, sizes, numbers of teeth, etc., to meet the needs of different processing scenarios. The utility model is mainly used for plastic (PC) material processing in the 3C industry. The shape and contour of the product, dimensional accuracy, knife marks, product transmittance and tool life are very high. This tool is specially developed for plastic (PC) material products. Its main features are ultra-high sharpness and long life. It ensures the contour accuracy and transmittance of the milling product. It adopts high-precision laser cutting and molding design, which can make the product reach the required spline curve shape at one time, and the product surface has a very transparent appearance quality. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the purpose of the utility model is to provide a single crystal diamond forming milling cutter.

[0006] In order to achieve the purpose of this utility model, the technical solution adopted is:

[0007] A single crystal diamond forming milling cutter, comprising:

[0008] A knife handle, one end of which is provided with a knife head bonding portion having a curved bonding surface in a radial direction;

[0009] A cutter head structure having an arc shape in the radial direction is arranged on the outer periphery of the curved bonding surface of the cutter head bonding portion;

[0010] The cutter head structure comprises an arc-shaped contour cutting surface in a radial direction, wherein a first axial end point of the arc-shaped contour cutting surface is asymmetrical to a second axial end point;

[0011] The second axial end point extends out of the handle portion so that the arc-shaped cutting surface is an arc-shaped cutting surface with an asymmetric profile;

[0012] An axial cutting surface is provided in the axial direction of the first axial end point,

[0013] An axial cutting blade extending out of the blade head bonding portion is provided on the axial cutting surface;

[0014] The axial cutting blade is inclined toward the handle portion, and the inclination angle of the axial cutting blade is 10±3°;

[0015] and a radial cutting blade disposed at a radial end of the arc-shaped contour cutting surface;

[0016] The radial cutting blade includes a blade rake angle and a blade clearance angle, and the angle of the blade rake angle is 12±3°;

[0017] The back angle of the blade is 25±3°.

[0018] In a preferred embodiment of the present invention, the contour value of the arc-shaped contour cutting surface is 0.02.

[0019] In a preferred embodiment of the present invention, the inclination angle of the axial cutting blade is 10°.

[0020] In a preferred embodiment of the present invention, the front angle of the blade is 12°.

[0021] In a preferred embodiment of the present invention, the back angle of the blade is 25°.

[0022] In a preferred embodiment of the present invention, the radial width of the cutter head is 5.28±0.02 mm.

[0023] In a preferred embodiment of the present invention, the cutter head is made of single crystal diamond.

[0024] In a preferred embodiment of the present invention, the handle is made of tungsten steel.

[0025] The beneficial effects of the utility model are:

[0026] The single crystal diamond forming milling cutter of the utility model is specially developed for plastic (PC) material products. Its main features are ultra-high sharpness and long service life, ensuring the contour accuracy and light transmittance of the milled products. It adopts high-precision laser cutting and forming design, which can make the product reach the required spline curve shape in one time, and the product surface has a very transparent appearance quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The structure of the utility model is shown in FIG. Figure 1 .

[0028] Figure 2 The structure of the utility model is shown in FIG. Figure 2 .

[0029] Figure 3 The structure of the utility model is shown in FIG. Figure 3 . DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the scope of the utility model. In addition, in the following structure, the description of the well-known structure and technology is omitted to avoid unnecessary confusion of the concept of the utility model.

[0031] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or component referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0032] like Figure 1-3 The single crystal diamond forming milling cutter shown includes a shank 100, which is made of tungsten steel. High-strength cemented carbide is also called tungsten steel, which is mainly composed of tungsten carbide (chemical formula: WC) and uses cobalt (chemical formula: Co) as a binder. It is a high-hardness alloy made through a powder metallurgy process.

[0033] A tool head bonding portion 110 having a curved bonding surface 111 in the radial direction is disposed at one end of the tool handle portion 100 , and a tool head structure 200 having an arc shape in the radial direction is disposed on the outer periphery of the curved bonding surface 111 of the tool head bonding portion 110 .

[0034] The cutter head structure 200 includes a radial arc-shaped contour cutting surface 210. The radial width of the cutter head structure 200 is 5.28±0.02 mm. The cutter head structure 200 is made of single crystal diamond. High-quality large-size CVD single crystal diamond is used, and its main component is diamond synthesized in the laboratory by special technical means through chemical vapor deposition of carbon elements.

[0035] Focus on combination Figure 2The first axial end point 211 and the second axial end point 212 of the arc-shaped contour cutting surface 210 are asymmetrical, so that the second axial end point 212 extends out of the handle 100, and the arc-shaped contour cutting surface 210 is an arc-shaped contour cutting surface with an asymmetrical contour. The contour value of the arc-shaped contour cutting surface is 0.02.

[0036] Focus on combination Figure 1 An axial cutting surface 220 is provided in the axial direction of the first axial end 211, and an axial cutting blade 221 extending out of the tool head bonding portion 110 is provided on the axial cutting surface 220. The axial cutting blade 221 is inclined toward the handle portion 100, and the inclination angle of the axial cutting blade 221 is 10±3°. In the embodiment, the inclination angle of the axial cutting blade 221 is preferably 10°.

[0037] and a radial cutting blade 230 disposed at the radial end of the arc-shaped contour cutting surface 210,

[0038] The radial cutting blade 230 includes a blade front angle 231 and a blade back angle 232 . The blade front angle 231 is 12±3°, and the blade back angle 232 is 25±3°.

[0039] In the embodiment, the preferred angle of the blade rake angle is 12°, and the preferred angle of the blade clearance angle is 25°.

[0040] Because of the above structure, the utility model can better cut through the form of double-sided blades, ensuring the contour accuracy and light transmittance of the milled product. The high-precision laser cutting molding design can make the product reach the required spline curve shape at one time, and the product surface has a very transparent appearance quality.

Claims

1. A single crystal diamond forming milling cutter, characterized in that: include: A knife handle, one end of which is provided with a knife head bonding portion having a curved bonding surface in a radial direction; A cutter head structure having an arc shape in the radial direction is arranged on the outer periphery of the curved bonding surface of the cutter head bonding portion; The cutter head structure comprises an arc-shaped contour cutting surface in a radial direction, wherein a first axial end point of the arc-shaped contour cutting surface is asymmetrical to a second axial end point; The second axial end point extends out of the handle portion so that the arc-shaped cutting surface is an arc-shaped cutting surface with an asymmetric profile; An axial cutting surface is provided in the axial direction of the first axial end point, An axial cutting blade extending out of the blade head bonding portion is provided on the axial cutting surface; The axial cutting blade is inclined toward the handle portion, and the inclination angle of the axial cutting blade is 10±3°; and a radial cutting blade disposed at a radial end of the arc-shaped contour cutting surface; The radial cutting blade includes a blade rake angle and a blade clearance angle, and the angle of the blade rake angle is 12±3°; The back angle of the blade is 25±3°.

2. A single crystal diamond forming milling cutter as claimed in claim 1, characterized in that: The contour value of the arc-shaped contour cutting surface is 0.

02.

3. A single crystal diamond forming milling cutter as claimed in claim 1, characterized in that: The inclination angle of the axial cutting blade is 10°.

4. A single crystal diamond forming milling cutter as claimed in claim 1, characterized in that: The angle of the blade rake angle is 12°.

5. A single crystal diamond forming milling cutter as claimed in claim 1, characterized in that: The angle of the blade back angle is 25°.

6. A single crystal diamond forming milling cutter as claimed in claim 1, characterized in that: The radial width of the cutter head is 5.28±0.02 mm.

7. A single crystal diamond forming milling cutter as claimed in claim 1, characterized in that: The cutter head is made of single crystal diamond.

8. A single crystal diamond forming milling cutter as claimed in claim 1, characterized in that: The shank portion is made of tungsten steel.

Images