Lettering cutter for processing carbon fiber composite material

Abstract

The utility model discloses a lettering cutter for processing a carbon fiber composite material, which comprises a cutter handle and a cutter head arranged at one end of the cutter handle, and the cutter head is a pyramid-shaped structural body and is provided with two first side blade surfaces in a rectangular surface shape and two second side blade surfaces in a triangular surface shape. The two first side edge faces are opposite and intersect, a main cutting edge with the sharpness being lower than 0.1 micron is formed at the intersection position, the two second side edge faces intersect with the two first side edge faces respectively, side cutting edges with the sharpness being lower than 0.1 micron are formed at the intersection position respectively, and the side cutting edges intersect with the main cutting edge respectively to form edge points; the surface roughness of the two first side blade faces and the surface roughness of the two second side blade faces are all smaller than 0.4 micrometer, so that friction is reduced, and chip removal is facilitated. The lettering cutter is simple in structure, the cutting edge is sharp, the layout is reasonable, the mirror surface effect of the side edge surface is high, the machining quality and the machining efficiency are improved, and the production cost and the maintenance cost are reduced.

Description

Technical Field

[0001] This utility model relates to the field of cutting tool technology, and in particular to a lettering tool for processing carbon fiber composite materials. Background Technology

[0002] Carbon fiber composites are widely used in high-end manufacturing due to their excellent properties such as high strength, lightweight, and corrosion resistance. However, current machining processes using cutting tools often result in problems such as burrs, delamination, or severe tool wear. These issues make it difficult to meet high-precision machining requirements, leading to high production costs and maintenance difficulties.

[0003] In view of the above, this utility model is hereby proposed. Summary of the Invention

[0004] To overcome the above-mentioned defects, this utility model provides a lettering tool for processing carbon fiber composite materials. It has a simple structure, sharp and reasonable cutting edge layout, and high mirror effect on the side cutting surface, which significantly improves the processing quality and efficiency, and reduces production and maintenance costs.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a lettering tool for processing carbon fiber composite materials, including a handle and a cutting head disposed on one end of the handle. The cutting head is a pyramidal structure with two first side cutting surfaces in the shape of rectangles and two second side cutting surfaces in the shape of triangles. The two first side cutting surfaces are opposite to each other and intersect, forming a main cutting edge with a sharpness of less than 0.1 μm at the intersection. The two second side cutting surfaces intersect with the two first side cutting surfaces respectively, forming side cutting edges with a sharpness of less than 0.1 μm at the intersection. The side cutting edges also intersect with the main cutting edge to form a cutting tip. In addition, the surface roughness of the two first side cutting surfaces and the two second side cutting surfaces is less than 0.4 μm to reduce friction and facilitate chip removal.

[0006] As a further improvement of this utility model, the included angle between the two first side cutting surfaces is 30° to 45°.

[0007] As a further improvement of this utility model, the knife handle adopts a cylindrical structure, the central axis of the knife handle is parallel to one of the first side cutting surfaces, and the other first side cutting surface is inclined relative to the central axis of the knife handle.

[0008] As a further improvement of this utility model, the two second side cutting surfaces are arranged in parallel, and the distance between the two second side cutting surfaces is 0.2 to 2 cm.

[0009] As a further improvement of this utility model, both the main cutting edge and the side cutting edge are straight line segments.

[0010] As a further improvement of this utility model, a support transition portion is provided between the handle and the blade head. The support transition portion has four cutting planes, two of which are smoothly connected to the two second side cutting surfaces, and the remaining two cutting planes are connected to the two first side cutting surfaces and form a step at the connection.

[0011] As a further improvement of this utility model, the engraving tool is made of cemented carbide material and has a wear-resistant layer coated on its surface.

[0012] As a further improvement of this utility model, the wear-resistant layer is made of titanium nitride coating or diamond-like coating.

[0013] The beneficial effects of this utility model are: ① Through structural improvements, this utility model provides a simple engraving tool with a sharp and rationally arranged cutting edge and a high mirror finish on the side cutting surface. This engraving tool effectively avoids problems such as burrs, delamination, severe tool wear, overheating, and carbon fiber debris adhering to the tool during the processing of carbon fiber composite materials, significantly improving processing quality and efficiency while reducing production and maintenance costs. ② The engraving tool described in this utility model is suitable for high-precision processing of carbon fiber composite materials, such as in the aerospace, automotive manufacturing, and sporting goods industries, demonstrating strong applicability. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the engraving tool described in this utility model;

[0015] Figure 2 This is a side view of the engraving tool described in this utility model;

[0016] Figure 3 for Figure 1 A magnified structural diagram of part A shown.

[0017] Referring to the accompanying drawings, the following explanations are provided:

[0018] 1. Handle; 2. Blade tip; 21. First side cutting edge; 22. Second side cutting edge;

[0019] 23. Main cutting edge; 24. Side cutting edge; 25. Cutting tip; 3. Support transition section;

[0020] 30. Cutting plane. Detailed Implementation

[0021] The preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0022] Example 1:

[0023] This embodiment 1 provides an engraving tool that can perform high-quality and high-efficiency processing on carbon fiber composite materials.

[0024] Please see the appendix Figure 1 To be continued Figure 3 As shown, the engraving tool for processing carbon fiber composite materials described in Embodiment 1 includes a handle 1 and a cutting head 2 integrally disposed on one end of the handle 1. Specifically, the cutting head 2 is a pyramidal structure with two rectangular first side cutting surfaces 21 and two triangular second side cutting surfaces 22. The two first side cutting surfaces 21 are opposite to each other and intersect, forming a main cutting edge 23 with a sharpness Ra of less than 0.1 μm at the intersection. The two second side cutting surfaces 22 intersect with the two first side cutting surfaces 21 respectively, forming side cutting edges 24 with a sharpness Ra of less than 0.1 μm at the intersection. The side cutting edges 24 also intersect with the main cutting edges 23 to form cutting tips 25. In addition, the surface roughness Ra of the two first side cutting surfaces 21 and the two second side cutting surfaces 22 is less than 0.4 μm to reduce friction and facilitate chip removal.

[0025] Understandably, ① based on the special structure of the cutting head 2, and by controlling the sharpness Ra of the main cutting edge 23 and the side cutting edge 24 to below 0.1μm, the main cutting edge 23 and the side cutting edge 24 are rationally arranged and extremely sharp (at the same time, the cutting tip 25 is also very sharp). Thus, when processing carbon fiber composite materials, the cutting head 2 can easily, cleanly, and steadily cut into the carbon fiber composite material, effectively avoiding problems such as burrs and material delamination on the surface of the carbon fiber composite material caused by an unreasonable or dull cutting edge structure, greatly ensuring processing quality. Furthermore, the sharp cutting head 2 can also extend the overall service life of the engraving tool and reduce processing costs. ② By controlling the surface roughness Ra of the first side cutting surface 21 and the second side cutting surface 22 to below 0.4μm, the first and second side cutting surfaces exhibit excellent mirror-like effects. This not only effectively reduces the friction between the engraving tool and the carbon fiber composite material during processing, preventing damage to the carbon fiber composite material caused by heat generated by friction, but also avoids problems such as tool wear. Moreover, the smooth first and second side cutting surfaces help prevent carbon fiber debris from adhering to the engraving tool and facilitate the separation of the tool from the carbon fiber composite material, further improving processing quality. In addition, the engraving tool described in this application has a simple structure, abandoning the complex structure of traditional tools, thus reducing production and maintenance costs.

[0026] Additional note: In the field of cutting tool technology, the sharpness of a cutting edge is generally expressed by its surface roughness Ra, which is common knowledge.

[0027] The following provides a detailed description of the specific structure of the engraving tool described in this embodiment.

[0028] Please continue to refer to the appendix. Figure 3 As shown, in the engraving tool structure of this embodiment, the included angle between the two first side cutting surfaces 21 is 30° to 45°, and can be further preferably 40° or 45°. It can be understood that by optimizing the included angle (or cutting edge angle) between the two first side cutting surfaces 21, this embodiment can further ensure and improve the sharpness of the engraving tool during cutting.

[0029] For further details, please refer to the appendix. Figure 2 As shown, the specific layout of the two first side cutting surfaces 21 is as follows: based on the cylindrical structure of the handle 1, the central axis of the handle 1 is parallel to one of the first side cutting surfaces 21, and the remaining first side cutting surface 21 is inclined relative to the central axis of the handle 1, with an inclination angle of 30° to 45° as described above. It can be understood that, based on the above layout of the two first side cutting surfaces 21, while improving the sharpness of the engraving tool during cutting, it also makes the movement of the blade 2 into or out of the carbon fiber composite material smoother and more stable.

[0030] Furthermore, based on the above-described layout of the two first side cutting surfaces 21, the two second side cutting surfaces 22 are arranged in parallel, and the distance between the two second side cutting surfaces 22 is 0.2 to 2 cm, preferably 1 cm or 1.5 cm. It is understood that this embodiment, by optimizing the distance (or cutting edge width) between the two second side cutting surfaces 22, can effectively ensure the stability of the engraving tool during cutting.

[0031] For further details, please refer to the appendix. Figure 3 As shown, both the main cutting edge 23 and the side cutting edges 24 are straight segments. Based on the above-described layout of the two first side cutting surfaces 21 and the two second side cutting surfaces 22, the length direction of the main cutting edge 23 is perpendicular to the central axis of the tool holder 1. Among the multiple side cutting edges 24, some side cutting edges 24 have length directions parallel to the central axis of the tool holder 1, while others have length directions at an angle to the central axis of the tool holder 1. It is understood that the above-described layout of the main cutting edge 23 and the side cutting edges 24 meets the cutting requirements.

[0032] Please continue to refer to the appendix. Figure 1As shown, in the lettering tool structure of this embodiment, a support transition portion 3 is integrally provided between the tool holder 1 and the tool head 2. The support transition portion 3 has four cutting planes 30, two of which smoothly transition to the two second side cutting surfaces 22, and the remaining two cutting planes 30 connect to the two first side cutting surfaces 21, forming a step at the connection point. It can be understood that this embodiment effectively improves the processing convenience and rigidity of the lettering tool by providing the support transition portion 3; moreover, the step effectively limits the cutting length of the tool head 2 according to processing requirements.

[0033] Furthermore, the engraving tool described in this embodiment is made of cemented carbide material with high strength and high hardness, and a wear-resistant layer is coated on the surface of the engraving tool; furthermore, the wear-resistant layer can preferably be a titanium nitride coating (TiN) or a diamond-like carbon (DLC) coating. It is understood that ① cemented carbide material is an alloy material made from a hard compound of a refractory metal and a binder metal through powder metallurgy, and is widely used as a tool material; this is common knowledge and will not be described in detail here. ② By coating the surface of the engraving tool with a wear-resistant layer, the wear resistance and service life of the engraving tool can be further improved.

[0034] Finally, the prefixes "first," "second," etc., in the component names in this specification (such as first side cutting surface, second side cutting surface, etc.) are only for clarity of description and are not intended to limit the scope of this utility model patent.

[0035] In summary, the engraving tool for processing carbon fiber composite materials described in this utility model has a simple structure, sharp and reasonably arranged cutting edges, and a high mirror effect on the side cutting surface, which significantly improves processing quality and efficiency, and reduces production and maintenance costs.

[0036] Many specific details have been set forth in the above description to provide a full understanding of this utility model. However, the above description is only a preferred embodiment of this utility model, and this utility model can be implemented in many other ways different from those described herein. Therefore, this utility model is not limited to the specific embodiments disclosed above. Furthermore, any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model using the methods and techniques disclosed above, or modify it into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the content of the technical solution of this utility model, shall still fall within the protection scope of the technical solution of this utility model.

Claims

1. A lettering tool for processing carbon fiber composite material, comprising a shank (1) and a head (2) arranged on one end of the shank (1), characterized in that: The cutter head (2) is a pyramid structure and is provided with two first side cutting surfaces (21) in the shape of rectangular surfaces and two second side cutting surfaces (22) in the shape of triangular surfaces, the two first side cutting surfaces (21) are opposite and intersect, and a main cutting edge (23) with a sharpness of 0.1 μm or less is formed at the intersection, the two second side cutting surfaces (22) intersect with the two first side cutting surfaces (21) respectively, and a side cutting edge (24) with a sharpness of 0.1 μm or less is formed at the intersection respectively, and the side cutting edge (24) also intersects with the main cutting edge (23) respectively to form a cutting tip (25); in addition, the surface roughness of the two first side cutting surfaces (21) and the two second side cutting surfaces (22) is 0.4 μm or less, so as to reduce friction and facilitate chip removal.

2. The lettering tool for machining carbon fiber composite materials according to claim 1, characterized in that: The included angle between the two first side cutting surfaces (21) is 30°-45°.

3. The lettering tool for machining carbon fiber composite materials according to claim 2, characterized in that: The cutter shank (1) adopts a cylindrical structure, the central axis of the cutter shank (1) is parallel to one of the first side cutting surfaces (21), and the other first side cutting surface (21) is arranged obliquely relative to the central axis of the cutter shank (1).

4. The lettering tool for machining carbon fiber composite materials according to claim 2, characterized by: The two second side cutting surfaces (22) are arranged in parallel, and the spacing between the two second side cutting surfaces (22) is 0.2-2 cm.

5. The lettering tool for machining carbon fiber composite materials according to claim 1, characterized by: The main cutting edge (23) and the side cutting edge (24) are both straight line segments.

6. The lettering tool for machining carbon fiber composite materials according to claim 1, characterized by: A support transition part (3) is further arranged between the cutter shank (1) and the cutter head (2), the support transition part (3) is provided with four cutting planes (30), two of the cutting planes (30) are respectively in smooth transition connection with the two second side cutting surfaces (22), and the remaining two cutting planes (30) are respectively in connection with the two first side cutting surfaces (21) and form steps at the connection positions.

7. The lettering tool for machining carbon fiber composite materials according to claim 1, characterized by: The lettering cutter is made of hard alloy material, and a wear-resistant layer is coated on the surface of the lettering cutter.

8. The lettering tool for machining carbon fiber composite materials according to claim 7, characterized in that: The wear-resistant layer is a titanium nitride coating or a diamond-like coating.

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