Composite diamond milling cutter

Abstract

The utility model discloses a composite diamond milling cutter, which is characterized by comprising a cutter handle part, a cutter head mounting part, a cutter head mounting part and a cutter head mounting part, a first tool bit and a second tool bit are symmetrically arranged on the tool bit installation part in the same axis in the up-down reverse direction. A first radial blade of the first tool bit inclines outwards, and the inclination angle ranges from 13 degrees to 15 degrees; a second radial cutting edge of the second tool bit inclines inwards and is provided with a cutting edge front angle and a cutting edge rear angle; the angle of the front angle of the cutting edge is 13-15 degrees, and the angle of the rear angle of the cutting edge is 15-18 degrees; the first tool bit is made of polycrystalline diamond, and the second tool bit is made of monocrystalline diamond. The axial direction of the second tool bit extends out of the axial front end of the tool bit mounting part; and the axial direction of the first tool bit extends out of the axial front end of the tool bit mounting part. According to the composite diamond milling cutter, the bottom face of a product is machined through the PCD, and the side edge of the product is machined through the monocrystal diamond.

Description

Technical Field

[0001] The utility model relates to the field of diamond tool manufacturing, in particular to a composite diamond milling cutter. Background Art

[0002] Acrylic, also known as PMMA or plexiglass, is derived from the English word acrylic (acrylic plastic), and its chemical name is polymethyl methacrylate. It is an important plastic polymer material developed earlier and has many excellent properties.

[0003] First of all, acrylic has crystal-like transparency, with a light transmittance of more than 92%, making the light soft and the vision clear. This material is easy to dye and can show excellent color development effects. In addition, it also has excellent weather resistance, high hardness and surface gloss, and good chemical resistance, which makes it stable and beautiful under various environmental conditions.

[0004] Acrylic performs well in processing. It can be processed in many ways, including direct injection molding, machining, thermoforming, etc.

[0005] Acrylic materials are processed by CNC equipment, which has very high requirements on product straightness, knife pattern and tool life.

[0006] For this purpose, a specific composite diamond milling cutter needs to be designed. Utility Model Content

[0007] In order to overcome the defects of the prior art, the purpose of the utility model is to provide a composite diamond milling cutter.

[0008] In order to achieve the purpose of this utility model, the technical solution adopted is:

[0009] A composite diamond milling cutter, comprising:

[0010] A handle portion, with a step portion and a cutter head mounting portion at one end of the handle portion;

[0011] The cutter head mounting portion is provided with a first cutter head and a second cutter head symmetrically arranged in the same axis in the vertical direction;

[0012] The first radial blade of the first blade head is inclined outwardly, and the inclination angle ranges from 13 to 15 degrees;

[0013] The second radial blade of the second blade head is inclined inwardly and is provided with a blade front angle and a blade back angle;

[0014] The front angle of the blade is 13-15°, and the back angle of the blade is 15-18°;

[0015] The first blade is made of polycrystalline diamond, and the second blade is made of single crystal diamond.

[0016] The second cutter head extends out of the axial front end of the cutter head mounting portion in the axial direction;

[0017] The first cutter head extends out of the axial front end of the cutter head mounting portion in an axial direction.

[0018] In a preferred embodiment of the present invention, the axial distance of the first cutter head is greater than the axial distance of the second cutter head.

[0019] In a preferred embodiment of the present invention, the inclination angle of the step portion is 30°.

[0020] In a preferred embodiment of the present invention, the first radial cutting edge of the first cutting head is inclined outward at an angle of 13°.

[0021] In a preferred embodiment of the present invention, the front angle of the blade of the second cutting head is 13°.

[0022] In a preferred embodiment of the present invention, the back angle of the blade of the second cutting head is 18°.

[0023] The beneficial effects of the utility model are:

[0024] The composite diamond milling cutter of the utility model processes the bottom surface of the product with polycrystalline diamond PCD and the side surface of the product with single crystal diamond. It has super high sharpness and long service life, and ensures that the bottom surface of the milled product reaches a matte state and the side surface reaches a high-gloss state. One tool can be used to process products to meet two different appearance requirements at one time, thereby improving production capacity and reducing the frequency of tool changes. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The structure of the utility model is shown in FIG. Figure 1 .

[0026] Figure 2 The structure of the utility model is shown in FIG. Figure 2 .

[0027] Figure 3 The structure of the utility model is shown in FIG. Figure 3 .

[0028] Figure 4 The structure of the utility model is shown in FIG. Figure 4 . DETAILED DESCRIPTION

[0029] 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.

[0030] 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.

[0031] like Figure 1-4 The composite diamond milling cutter shown includes a shank portion 100 , and a step portion 110 and a cutter head mounting portion 120 are connected at one end of the shank portion 100 , wherein the inclination angle of the step portion is 30°.

[0032] The tool head mounting portion 120 is provided with a first tool head 210 and a second tool head 220 symmetrically arranged in the same axis in the vertical direction. The first tool head 210 is made of polycrystalline diamond, and the second tool head 220 is made of single crystal diamond.

[0033] The utility model adopts high-quality CVD single crystal diamond, the main component of which is diamond synthesized by special technical means in a laboratory through chemical vapor deposition of carbon elements.

[0034] The polycrystalline diamond in the utility model is a material with high hardness and excellent wear resistance. The PCD material is mainly sintered by artificially synthesized diamond micropowder and a cemented carbide matrix through a high temperature and high pressure process.

[0035] The first radial blade 211 of the first blade head 210 is inclined outwardly, and the inclination angle ranges from 13° to 15°. In the embodiment, the first radial blade 211 is preferably inclined outwardly at an angle of 13°.

[0036] The second radial blade 221 of the second blade head 220 is inclined inward and is provided with a blade front angle 2211 and a blade back angle 2212. The blade front angle 2211 is 13-15°. In the embodiment, the blade front angle 2211 of the second blade head is preferably 13°.

[0037] The angle of the blade back angle 2212 is 15-18°, and in the embodiment, the angle of the blade back angle 2212 is preferably 18°.

[0038] The first cutting bit 210 extends out of the axial front end of the cutting bit mounting portion 120 in the axial direction.

[0039] The second cutting head 220 extends out of the axial front end of the cutting head mounting portion 120 in the axial direction, and the axial distance of the first cutting head 210 is greater than the axial distance of the second cutting head 220 .

[0040] The composite diamond milling cutter of the utility model processes the bottom surface of the product with polycrystalline diamond PCD and the side surface of the product with single crystal diamond. It has super high sharpness and long service life, and ensures that the bottom surface of the milled product reaches a matte state and the side surface reaches a high-gloss state. One tool can be used to process products to meet two different appearance requirements at one time, thereby improving production capacity and reducing the frequency of tool changes.

[0041] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above.

[0042] Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments. The above-mentioned embodiments and the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention shall be defined by the attached claims and their equivalents.

Claims

1. A composite diamond milling cutter, characterized in that: include: A handle portion, with a step portion and a cutter head mounting portion at one end of the handle portion; The cutter head mounting portion is provided with a first cutter head and a second cutter head symmetrically arranged in the same axis in the vertical direction; The first radial blade of the first blade head is inclined outwardly, and the inclination angle ranges from 13 to 15 degrees; The second radial blade of the second blade head is inclined inwardly and is provided with a blade front angle and a blade back angle; The front angle of the blade is 13-15°, and the back angle of the blade is 15-18°; The first blade is made of polycrystalline diamond, and the second blade is made of single crystal diamond. The second cutter head extends out of the axial front end of the cutter head mounting portion in the axial direction; The first cutter head extends out of the axial front end of the cutter head mounting portion in an axial direction.

2. A composite diamond milling cutter as claimed in claim 1, characterized in that: The axial distance of the first cutting head is greater than the axial distance of the second cutting head.

3. A composite diamond milling cutter as claimed in claim 1, characterized in that: The inclination angle of the step portion is 30°.

4. A composite diamond milling cutter as claimed in claim 1, characterized in that: The first radial cutting edge of the first cutting head is inclined outward at an angle of 13°.

5. A composite diamond milling cutter as claimed in claim 1, characterized in that: The front angle of the blade of the second cutting head is 13°.

6. A composite diamond milling cutter as claimed in claim 1, characterized in that: The back angle of the blade of the second cutting head is 18°.

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