Monocrystal diamond milling cutter for plastic processing

Abstract

The utility model discloses a single crystal diamond milling cutter for plastic processing, which comprises a cylindrical cutter body, and a wedge-shaped cutter head seat is arranged at the cutter head connecting end of the cylindrical cutter body; a diamond contour cutter body structure is arranged on the radial peripheral surface of the wedge-shaped cutter head seat; the diamond contour cutter body structure extends out of the tail end of the wedge-shaped cutter head seat in the axial direction; the tail end, extending out of the wedge-shaped tool bit seat, of the diamond outline tool body structure is axially provided with an axial front blade inclining inwards; the inner end of the diamond contour cutter body structure deviates from the axis of the wedge-shaped cutter head seat; a radial cutting edge front angle and a radial cutting edge rear angle are arranged in the radial direction of the diamond outline cutter body structure; and a concave arc surface is arranged at the radial wide part of the diamond profile cutter body structure. According to the utility model, through ultrahigh sharpness and long service life, 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] This utility model relates to the field of diamond tool manufacturing, specifically to a single-crystal diamond end mill for plastic processing. Background Technology

[0002] Diamond end mills are end mills made of diamond, possessing extremely high hardness and wear resistance. They are suitable for high-speed cutting of non-ferrous materials such as graphite, aluminum alloys, and copper. Diamond tools come in many types, with significant differences in performance. Different types of diamond tools vary considerably in structure, manufacturing methods, and application areas. Diamond end mills have wide applications in precision machining, enabling ultra-precision surface finishing with extremely high accuracy and surface smoothness.

[0003] The processing of PC materials in the 3C industry requires high-performance single-crystal diamond end mills with higher sharpness. The 3C industry has very high requirements for the shape and contour of products, dimensional accuracy, tool marks, product light transmittance and tool life.

[0004] This invention ensures the precision and light transmission of milled product contours through its ultra-high sharpness and long lifespan. It adopts a high-precision laser cutting and forming design, which can enable the product to achieve the required spline curve shape in one go, and the product surface has a very bright appearance quality. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the purpose of this utility model is to provide a single crystal diamond end mill for plastic processing.

[0006] The single-crystal diamond end mill for plastic processing of the present invention can enable the product to achieve the required spline curve shape in one go, and the product surface has a very bright appearance quality.

[0007] To achieve the purpose of this utility model, the technical solution adopted is as follows:

[0008] A single-crystal diamond end mill for plastic processing, comprising:

[0009] A cylindrical blade body, wherein a wedge-shaped blade head seat is provided at the blade head connecting end of the cylindrical blade body;

[0010] A diamond profile cutter body structure is provided on the radial outer circumferential surface of the wedge-shaped cutter head seat;

[0011] The diamond profile cutter body structure extends axially beyond the end of the wedge-shaped cutter head seat;

[0012] The diamond profile cutter body structure has an inwardly inclined axial front cutting edge at the end of the wedge-shaped cutter head seat.

[0013] The axial front cutting edge has an angle range of 3±1°;

[0014] The inner end of the diamond profile cutter body structure is offset from the axis of the wedge-shaped cutter head seat;

[0015] The diamond profile cutter body structure is provided with a radial cutting edge rake angle and a radial cutting edge clearance angle in the radial direction.

[0016] The radial cutting edge rake angle is 12±0.1°;

[0017] The radial blade back angle is 20±0.1°;

[0018] The diamond profile cutter body structure has a concave arc surface in its radial width portion;

[0019] The length of the first axial end face of the concave arc surface facing the end of the wedge-shaped cutter head is less than the length of the second axial end face of the concave arc surface facing the cylindrical cutter body.

[0020] In a preferred embodiment of this invention, the distance by which the diamond profile cutter body structure extends axially beyond the end of the wedge-shaped cutter head seat is 0.3 ± 0.01 mm. Preferably, it is 0.3 mm.

[0021] In a preferred embodiment of this utility model, the axial length of the diamond profile cutter body structure is 3.96±0.02mm.

[0022] In a preferred embodiment of this utility model, the inner end of the diamond contour cutter body structure is offset from the axis of the wedge-shaped cutter head seat, and the width difference between the inner end and the axis is 0.5±0.05mm. The upper end of the diamond contour cutter body structure is at the same height as the axis.

[0023] In a preferred embodiment of this utility model, a cutting contour surface is provided on the concave arc surface, and the contour value of the cutting contour surface is 0.02.

[0024] The beneficial effects of this utility model are as follows:

[0025] This invention ensures the precision and light transmission of milled product contours through its ultra-high sharpness and long lifespan. It adopts a high-precision laser cutting and forming design, which can enable the product to achieve the required spline curve shape in one go, and the product surface has a very bright appearance quality. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 .

[0027] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 .

[0028] Figure 3 This is a schematic diagram of the structure of the present invention. Figure 3 . Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit its scope. Furthermore, in the following descriptions, well-known structures and technologies have been omitted to avoid unnecessary confusion regarding the concept of this utility model.

[0030] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] like Figure 1-3 The single-crystal diamond end mill for plastic processing shown includes a cylindrical cutter body 100. The cylindrical cutter body 100 is mainly used to facilitate mounting on the drive shaft of the drive device for easy use (not shown in the figure).

[0032] The blade body 100 is made of high-strength cemented carbide, also known as tungsten steel. Its main component is tungsten carbide (chemical formula: WC), and it uses cobalt (chemical formula: Co) as a binder. It is a high-hardness alloy made through powder metallurgy.

[0033] The cylindrical cutter body 100 has a wedge-shaped cutter head seat 110 at the cutter head connection end. The radial outer circumferential surface of the wedge-shaped cutter head seat 110 is concave, and a diamond profile cutter body structure 200 is provided on the concave radial outer circumferential surface of the wedge-shaped cutter head seat 110.

[0034] In this embodiment, the diamond profile cutter body structure 200 uses high-quality CVD single-crystal diamond, which is mainly composed of carbon elements and is synthesized in the laboratory by special technical means through chemical vapor deposition.

[0035] Specifically, such as Figure 1As shown, the diamond profile cutter body structure 200 extends axially from the end of the wedge-shaped cutter head seat 110. This is to facilitate the machining of small surfaces. The distance between the axial direction of the diamond profile cutter body structure 200 and the end of the wedge-shaped cutter head seat 110 is 0.3 ± 0.01 mm, which is 0.3 mm in this embodiment.

[0036] The diamond profile cutter body structure 200 has an inwardly inclined axial front cutting edge 210 at the end of the wedge-shaped cutter head seat 110, and the angle range of the axial front cutting edge 210 is 3±1°.

[0037] The axial length of the diamond profile cutter body structure 200 is 3.96±0.02mm.

[0038] Key points combined Figure 2 The inner end of the diamond profile cutter body structure 200 is offset from the axis 111 of the wedge-shaped cutter head seat 110. Specifically, the inner end of the diamond profile cutter body structure 200 is offset from the axis 111 of the wedge-shaped cutter head seat 110, and the width difference between the inner end and the axis 111 is 0.5±0.05mm. The upper end of the diamond profile cutter body structure 200 is at the same height as the axis 111.

[0039] The diamond profile cutter body structure 200 is provided with a radial rake angle 221 and a radial clearance angle 222, wherein the radial rake angle 221 has an angle of 12±0.1° and the radial clearance angle 222 has an angle of 20±0.1°.

[0040] Combination Figure 3 As can be seen, to facilitate contour machining, the radial width of the diamond contour cutter body structure 200 is provided with a concave arc surface 230. The length of the first axial end face 231 of the concave arc surface 230 towards the end of the wedge-shaped cutter head seat 110 is less than the length of the second axial end face 232 of the concave arc surface 230 towards the cylindrical cutter body 100, so as to form an inclined cutting contour surface 233. The cutting contour surface 233 is provided on the concave arc surface 230, and the contour value of the cutting contour surface 233 is 0.02.

[0041] The above shows and describes the basic principles, main features, and advantages of this utility model.

[0042] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of this utility model as defined by the appended claims and their equivalents.

Claims

1. A single crystal diamond milling tool for plastic processing, characterized by, The utility model relates to a diamond profile cutting tool, comprising: a cylindrical tool body, a wedge-shaped tool head seat is arranged at the tool head connecting end of the cylindrical tool body; a diamond profile tool body structure is arranged on the radial outer circumferential surface of the wedge-shaped tool head seat; the diamond profile tool body structure axially extends beyond the end of the wedge-shaped tool head seat; an inwardly inclined axial front blade is axially arranged at the end of the diamond profile tool body structure extending beyond the wedge-shaped tool head seat; the angle of the axial front blade ranges from 3 to 1 degrees; the inner end of the diamond profile tool body structure deviates from the axis of the wedge-shaped tool head seat; a radial blade rake angle and a radial blade relief angle are arranged radially on the diamond profile tool body structure; the angle of the radial blade rake angle is 12±0.1 degrees; the angle of the radial blade relief angle is 20±0.1 degrees; a concave arc surface is arranged on the radially wide part of the diamond profile tool body structure; the length of the first axial end surface of the concave arc surface towards the end of the wedge-shaped tool head seat is less than the length of the second axial end surface of the concave arc surface towards the cylindrical tool body.

2. A single crystal diamond milling tool for plastic processing according to claim 1, wherein The distance of the diamond profile tool body structure axially extending beyond the end of the wedge-shaped tool head seat is 0.3±0.01mm.

3. The single crystal diamond milling tool for plastic processing according to claim 1, wherein The axial length of the diamond profile tool body structure is 3.96±0.02mm.

4. The single crystal diamond milling tool for plastic processing according to claim 1, wherein The inner end of the diamond profile tool body structure deviates from the axis of the wedge-shaped tool head seat, and the width difference with the axis is 0.5±0.05mm, and the upper end of the diamond profile tool body structure is isohypse with the axis.

5. A single crystal diamond milling tool for plastic processing according to claim 1, wherein The cutting profile surface is arranged on the concave arc surface, and the profile value of the cutting profile surface is 0.02.

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