A pcd rotary bur specifically for machining carbon fibre materials

Abstract

The utility model discloses a PCD rotary file specially used for processing carbon fiber material, including the blade body, the tail end of blade body is provided with the handle, and the front end of blade body is provided with the tool bit, and the surface of tool bit is provided with a plurality of front cutting edges, and the surface of blade body is provided with a plurality of rear cutting edges, and the rear cutting edge surface is provided with a plurality of auxiliary cutting edges. The PCD rotary file specially used for processing carbon fiber material, the front cutting edge and the rear cutting edge form the main cutting edge, and the main cutting edge cooperates with the auxiliary cutting edge and works together, can effectively reduce the layered, tearing and other defects of carbon fiber material in the processing, improves the flatness and the finish of processing surface, reduces the roughness of processing surface, satisfies the requirement of high accuracy processing, and the gradually changing interval design of auxiliary cutting edge can make the tool better adapt to different processing depth requirement in the processing, avoids the cutting force too concentrated, further improves the stability of processing and surface quality.

Description

Technical Field

[0001] This utility model relates to the field of PCD cutting tool technology, and in particular to a PCD rotary file specifically designed for machining carbon fiber materials. Background Technology

[0002] A rotary file is a high-efficiency cutting tool used for machining materials such as metal, wood, and plastics. It is typically driven by a high-speed rotating device (such as an electric drill, milling machine, or handheld grinder). Its core feature is a sharp cutting edge or abrasive at the head, allowing for rapid grinding, cutting, deburring, grooving, or polishing. Meanwhile, carbon fiber materials, with their excellent properties such as high specific strength, high specific modulus, high temperature resistance, friction resistance, electrical conductivity, thermal conductivity, and corrosion resistance, are widely used in aerospace, automotive, sporting goods, and many other fields.

[0003] Currently, due to the high hardness of carbon fiber materials, processing them is quite difficult. Traditional rotary files are prone to wear during processing, resulting in short tool life. Frequent tool replacements not only increase costs but also affect processing efficiency. Furthermore, carbon fiber materials are prone to defects such as delamination and tearing during processing, which negatively impacts the surface quality. In addition, the large amount of dust generated during processing not only pollutes the working environment but may also harm the health of operators. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a PCD rotary file specifically designed for processing carbon fiber materials, which has the technical effect of efficiently and effectively processing carbon fiber with high quality, while also reducing dust pollution.

[0005] To solve the above-mentioned technical problems and achieve the above-mentioned technical effects, this utility model is implemented through the following technical solution: The technical solution of this utility model is: a PCD rotary file specifically for processing carbon fiber materials, including a blade, a handle at the tail end of the blade, a head at the front end of the blade, a plurality of front cutting edges arranged around the surface of the head with its own axis as the center, a plurality of rear cutting edges adapted to the front cutting edges arranged around the surface of the blade, and a plurality of auxiliary cutting edges arranged at intervals from front to back on the surface of the rear cutting edges.

[0006] Furthermore, both the rear cutting edge and the front cutting edge are composed of PCD material with ultrafine grains.

[0007] Furthermore, the plurality of front cutting edges and the plurality of rear cutting edges are all designed in a spiral shape with the axis of the blade as the center.

[0008] Furthermore, the rake angle of each of the front cutting edges is 15°-25°, the clearance angle of the rear cutting edge is 8°-12°, and the front cutting edges and the rear cutting edges constitute the main cutting edge.

[0009] Furthermore, an angle difference is formed between the auxiliary cutting edge and the main cutting edge, and this angle difference is 30°-45°.

[0010] Furthermore, the distance between two adjacent auxiliary cutting edges gradually decreases from front to back.

[0011] Furthermore, a chip removal groove is formed between the two rear cutting edges, and the surface of the chip removal groove is polished.

[0012] Furthermore, the tail end of the blade is fixedly connected to the front end of the handle by welding.

[0013] Furthermore, the diameter of the blade is the same as the diameter of the handle, and the tail of the handle is provided with a mounting part.

[0014] The beneficial technical effects of this utility model are as follows: the main cutting edge is composed of a front cutting edge and a rear cutting edge, which work together with the auxiliary cutting edge to effectively reduce defects such as delamination and tearing in carbon fiber materials during processing, improve the flatness and smoothness of the processed surface, reduce the surface roughness, and meet the requirements of high-precision processing. In addition, the gradual spacing design of the auxiliary cutting edge enables the tool to better adapt to different processing depth requirements during processing, avoid excessive concentration of cutting force, and further improve the stability and surface quality of processing. The tool has a simple structure and solves the problem of delamination and tearing defects that occur during the processing of carbon fiber materials due to the high hardness of carbon fiber materials when using traditional tools. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a front view schematic diagram of the structure of this utility model; Figure 3 This is a side view schematic diagram of the structure of the cutter head of this utility model; Figure 4 This is a three-dimensional schematic diagram of the chip removal groove and the back cutting edge of this utility model.

[0016] The numbers and letters in the diagram represent the names of the corresponding components: 1. Tool body; 2. Tool holder; 3. Secondary cutting edge; 4. Back cutting edge; 5. Tool tip; 6. Front cutting edge; 7. Chip groove. Detailed Implementation

[0017] In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0018] See appendix Figure 1 - Appendix Figure 4 As shown, a PCD rotary file specifically designed for processing carbon fiber materials includes a blade 1 and a handle 2 at the tail end of the blade 1. The tail end of the blade 1 and the front end of the handle 2 are fixedly connected by welding. The diameter of the blade 1 is the same as the diameter of the handle 2, and the tail end of the handle 2 is provided with a mounting part. The handle 2 is made of high-strength PCD material, possessing good hardness, toughness, and fatigue resistance, ensuring stable power transmission during high-speed rotation. The blade 1 and handle 2 are connected by welding, ensuring a strong connection and overall dynamic balance.

[0019] The front end of the blade 1 is provided with a cutting head 5. Multiple front cutting edges 6 are arranged around the surface of the cutting head 5 with its own axis as the center. Multiple rear cutting edges 4 that are adapted to the front cutting edges 6 are arranged around the surface of the blade 1. Both the rear cutting edges 4 and the front cutting edges 6 are composed of ultra-fine grain PCD material. Multiple auxiliary cutting edges 3 are arranged on the surface of the rear cutting edges 4 from front to back.

[0020] Both the blade 1 and the cutting head 5 have uniquely designed back cutting edge 4 and front cutting edge 6 distributed on their surfaces. Both the back cutting edge 4 and the front cutting edge 6 are made of ultra-fine grain PCD material, which has extremely high hardness and wear resistance and can effectively resist the wear of carbon fiber material. During processing, the blade 1 can be mounted on the mounting base of the machining center through the tool holder 2 at the tail. Then the machining center drives the tool to process the carbon fiber material.

[0021] Multiple front cutting edges 6 and multiple rear cutting edges 4 are all designed in a spiral shape with the axis of the cutter body 1 as the center. The spiral arrangement of the front cutting edges 6 and the rear cutting edges 4 has been optimized in terms of spiral angle. This can ensure the cutting efficiency of carbon fiber materials while reducing the impact of cutting force on carbon fiber materials and reducing the probability of delamination and tearing.

[0022] Each front cutting edge 6 has a rake angle of 15°-25° and a clearance angle of 8°-12°. The front cutting edge 6 and the clearance cutting edge 4 form the main cutting edge. The auxiliary cutting edge 3 forms an angle difference with the main cutting edge, and this angle difference is 30°-45°.

[0023] The main cutting edge, consisting of the back cutting edge 4 and the front cutting edge 6, is primarily responsible for material removal. Its 15°-25° rake angle enhances cutting sharpness, while its approximately 8°-12° clearance angle reduces friction between the tool and the machined surface. The auxiliary cutting edge 3, positioned below the main cutting edge 4, forms a 30°-45° angle difference with it. This angle difference is used to finish the surface machined by the main cutting edge, improving the smoothness and finish of the machined surface.

[0024] Furthermore, the distance between two adjacent auxiliary cutting edges 3 gradually decreases from front to back. By designing that the distance between two adjacent auxiliary cutting edges 3 is smaller at the end near the tool holder 2 and gradually increases at the end away from the tool holder 2, the tool can better adapt to different machining depth requirements during the machining process, avoid excessive concentration of cutting force, and further improve machining stability and surface quality.

[0025] Furthermore, a chip removal groove 7 is formed between the two rear cutting edges 4. The surface of the chip removal groove 7 is polished, and the cross-section of the chip removal groove 7 is parabolic. Through the parabolic design, this shape allows the chips to be quickly discharged under the action of centrifugal force and cutting fluid, avoiding the accumulation of chips in the cutting area. The depth of the chip removal groove 7 gradually increases from front to back with the tool body 1 as the center, in order to accommodate the increased amount of chips generated as the cutting edge wears. At the same time, the surface of the chip removal groove 7 is polished to reduce the friction between the chips and the inner wall of the chip removal groove 7, ensuring that the chips can be discharged smoothly.

[0026] To further improve chip removal, tiny protrusions can be provided at the bottom of the chip removal groove 7. These protrusions can generate tiny airflows when the rotary file rotates, helping the chips to be discharged more quickly.

[0027] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A PCD rotary file specifically designed for processing carbon fiber materials, characterized in that, include: The blade (1) has a handle (2) at its tail end and a blade head (5) at its front end. The blade head (5) has multiple front cutting edges (6) arranged around its own axis on its surface. The blade (1) has multiple rear cutting edges (4) that are adapted to the front cutting edges (6) arranged around its surface. The rear cutting edges (4) have multiple auxiliary cutting edges (3) arranged at intervals from front to back on their surface.

2. The PCD rotary file specifically for processing carbon fiber materials according to claim 1, characterized in that, Both the rear cutting edge (4) and the front cutting edge (6) are composed of PCD material with ultrafine grains.

3. The PCD rotary file specifically for processing carbon fiber materials according to claim 2, characterized in that, The multiple front cutting edges (6) and the multiple rear cutting edges (4) are all designed in a spiral shape with the axis of the blade (1) as the center.

4. The PCD rotary file specifically for processing carbon fiber materials according to claim 3, characterized in that, The rake angle of each of the front cutting edges (6) is 15°-25°, and the clearance angle of the rear cutting edge (4) is 8°-12°, and the front cutting edges (6) and the rear cutting edges (4) constitute the main cutting edge.

5. The PCD rotary file specifically for processing carbon fiber materials according to claim 4, characterized in that, An angle difference is formed between the auxiliary cutting edge (3) and the main cutting edge, and the angle difference is 30°-45°.

6. The PCD rotary file specifically for processing carbon fiber materials according to claim 1, characterized in that, The distance between two adjacent auxiliary cutting edges (3) gradually decreases from front to back.

7. The PCD rotary file specifically for processing carbon fiber materials according to claim 1, characterized in that, A chip removal groove (7) is formed between the two back cutting edges (4), and the surface of the chip removal groove (7) is polished.

8. The PCD rotary file specifically for processing carbon fiber materials according to claim 1, characterized in that, The tail end of the blade (1) is fixedly connected to the front end of the handle (2) by welding.

9. The PCD rotary file specifically for processing carbon fiber materials according to claim 1, characterized in that, The diameter of the blade (1) is the same as the diameter of the handle (2), and the tail of the handle (2) is provided with a mounting part.

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