Special drill bit for aluminum honeycomb plate

Abstract

The invention belongs to the technical field of drill bits, particularly relates to a special drill bit for a honeycomb aluminum plate, and aims to solve the problems that when an existing drill bit is used for machining a honeycomb aluminum material, the machining precision and the surface quality are often difficult to guarantee, and meanwhile, the machining efficiency is low. The drill bit head is connected to one end of the drill bit main body; the main cutting edge is arranged on the drill bit head; the first auxiliary blade and the second auxiliary blade are both arranged on the drill bit head and used for trimming cutting edges, the outer side of the drill bit head is coated with a wear-resistant coating, and the wear-resistant coating is a composite coating composed of titanium nitride and tungsten carbide. By means of the combined design of the stepped main cutting edge, the first auxiliary edge and the second auxiliary edge and the optimized geometric parameters and wear-resistant coating technology, efficient and accurate machining of the honeycomb aluminum material is achieved, machining defects are reduced, and machining quality and efficiency are improved.

Description

Technical Field

[0001] This invention relates to the field of drill bit technology, and in particular to a special drill bit for use in honeycomb aluminum panels. Background Technology

[0002] Honeycomb aluminum materials are widely used in aerospace, construction, and transportation due to their advantages such as light weight, high strength, and corrosion resistance. However, due to their special structure and physical properties, problems such as burrs, tearing, and deformation are prone to occur during processing. A drill bit is a rotating tool that creates holes in the material by cutting or grinding.

[0003] In existing technologies, drill bits often struggle to guarantee processing accuracy and surface quality when machining honeycomb aluminum materials, while also exhibiting low processing efficiency. To address these issues, we propose a specialized drill bit for honeycomb aluminum panels. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies where drill bits often fail to guarantee processing accuracy and surface quality, and also suffer from low processing efficiency when processing honeycomb aluminum materials. Therefore, this invention proposes a special drill bit for honeycomb aluminum panels.

[0005] The technical solution for a special drill bit for honeycomb aluminum panels provided in this application is as follows:

[0006] A special drill bit for use in honeycomb aluminum panels, comprising:

[0007] Drill bit body;

[0008] The drill bit head is connected to one end of the drill bit body;

[0009] The main cutting edge is located on the drill head.

[0010] The first and second auxiliary cutting edges are both located on the drill head and are used to trim the cutting edges. The outer side of the drill head is coated with a wear-resistant coating, which is a composite coating composed of titanium nitride and tungsten carbide. Chip removal grooves are provided on the outer side of the drill body to remove chips. Guide grooves are provided on the drill head, and the guide grooves adopt a spiral design to ensure smooth chip discharge.

[0011] Furthermore, the drill bit head adopts a stepped design for segmented material cutting.

[0012] Furthermore, the main cutting edge is provided with a apex angle of 120°.

[0013] Furthermore, the first auxiliary cutting edge is provided with a front angle of 10°-15°, the second auxiliary cutting edge is provided with a rear angle of 5°-8°, and an alloy cutting tip is connected to the drill head. The front and rear angles are used to adapt to the low cutting force requirements of the honeycomb aluminum material.

[0014] In summary, this application includes at least one of the following beneficial technical effects:

[0015] 1. This solution uses a combination design of a stepped main cutting edge, a first auxiliary edge, and a second auxiliary edge to cut the material in segments, gradually reducing cutting resistance while ensuring uniform distribution of cutting force and reducing machining vibration.

[0016] 2. This solution, through the design of chip removal grooves and guide grooves, can ensure smooth chip discharge and prevent blockage.

[0017] This invention achieves efficient and precise machining of honeycomb aluminum materials by combining a stepped main cutting edge, a first auxiliary edge, and a second auxiliary edge, along with optimized geometric parameters and a wear-resistant coating process, thereby reducing machining defects and improving machining quality and efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the forward rotation structure of a special drill bit for honeycomb aluminum panels proposed in this invention;

[0019] Figure 2 This is a schematic diagram of the reverse structure of a special drill bit for honeycomb aluminum panels proposed in this invention;

[0020] Figure 3 This is a schematic diagram of the drill head structure of a special drill bit for honeycomb aluminum panels proposed in this invention.

[0021] Figure 4 This is a schematic diagram showing the front angle, top angle, and rear angle of a special drill bit for honeycomb aluminum panels proposed in this invention.

[0022] Figure 5 This is a schematic diagram showing the reverse angles of the front, top, and rear angles of a special drill bit for honeycomb aluminum panels proposed in this invention.

[0023] Figure 6 This is a schematic diagram showing the front angle, top angle, and rear angle of a special drill bit for honeycomb aluminum panels proposed in this invention, with adjacent angles rotated forward.

[0024] Figure 7 This is a schematic diagram showing the reversed adjacent angles of the front, top, and rear angles of a special drill bit for honeycomb aluminum panels proposed in this invention.

[0025] Figure 8This is a schematic diagram of the drilling hole pattern of a special drill bit for honeycomb aluminum panels proposed in this invention.

[0026] Reference numerals: 1. Drill body; 2. Drill head; 3. Chip flute; 4. Main cutting edge; 5. Point angle; 6. Second auxiliary edge; 7. First auxiliary edge; 8. Carbide tip. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] Example

[0029] Reference Figures 1-8 A special drill bit for use in honeycomb aluminum panels, comprising:

[0030] Drill bit body 1;

[0031] Drill head 2, drill head 2 is connected to one end of drill body 1;

[0032] Main cutting edge 4, which is set on the drill head 2;

[0033] The first auxiliary cutting edge 7 and the second auxiliary cutting edge 6 are both located on the drill head 2 and are used to trim the cutting edges. The outer side of the drill head is coated with a wear-resistant coating, which is a composite coating composed of titanium nitride and tungsten carbide. Chip removal grooves are provided on the outer side of the drill body to remove chips. Guide grooves are provided on the drill head, and the guide grooves adopt a spiral design to ensure smooth chip discharge. The drill head 2 adopts a stepped design for segmented cutting of materials. The main cutting edge 4 is provided with a apex angle 5, which has an angle of 120°. The first auxiliary cutting edge 7 is provided with a rake angle, which has an angle of 10°-15°. The second auxiliary cutting edge 6 is provided with a clearance angle, which has an angle of 5°-8°. An alloy cutter head 8 is connected to the drill head 2. The rake angle and clearance angle are used to adapt to the low cutting force requirements of honeycomb aluminum materials.

[0034] The implementation principle in this embodiment is as follows: During use, the drill bit body 1 is made of high-strength cemented carbide material to ensure its stability at high cutting speeds. The drill bit head 2 adopts a stepped design, which can cut the material in segments, gradually reducing cutting resistance, while ensuring uniform distribution of cutting force, reducing machining vibration, and optimizing geometric parameters and wear-resistant coating processes to achieve efficient and precise machining of honeycomb aluminum materials, reducing machining defects, and improving machining quality and efficiency. The chip removal groove 3 and guide groove can ensure smooth chip discharge and prevent clogging. The hole shape after using a speed of 1800 rpm is as follows: Figure 8 It has no rolled edges or burst holes, the drill bit does not stick, and it can perform high-speed continuous processing.

[0035] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A special drill bit for honeycomb aluminum panels, characterized in that: include: Drill bit body (1); Drill head (2), the drill head (2) is connected to one end of the drill body (1); The main cutting edge (4) is located on the drill head (2); The first auxiliary cutting edge (7) and the second auxiliary cutting edge (6) are both located on the drill head (2) and are used to trim the cutting edge.

2. A special drill bit for honeycomb aluminum panels according to claim 1, characterized in that: The outer side of the drill bit head (2) is coated with a wear-resistant coating.

3. A special drill bit for honeycomb aluminum panels according to claim 2, characterized in that: The wear-resistant coating is a composite coating composed of titanium nitride and tungsten carbide.

4. A special drill bit for honeycomb aluminum panels according to claim 3, characterized in that: The outer side of the drill bit body (1) is provided with a chip removal groove (3) for removing chips.

5. A special drill bit for honeycomb aluminum panels according to claim 4, characterized in that: The drill bit head (2) is provided with a guide groove, which adopts a spiral design to ensure that the chips are discharged smoothly.

6. A special drill bit for honeycomb aluminum panels according to claim 5, characterized in that: The drill head (2) adopts a stepped design for segmented material cutting.

7. A special drill bit for honeycomb aluminum panels according to claim 6, characterized in that: The main cutting edge (4) is provided with a apex angle (5), and the apex angle (5) is 120°.

8. A special drill bit for honeycomb aluminum panels according to claim 7, characterized in that: The first auxiliary blade (7) is provided with a front angle, the angle of which is 10°-15°.

9. A special drill bit for honeycomb aluminum panels according to claim 8, characterized in that: The second auxiliary blade (6) is provided with a rear angle, the angle of which is 5°-8°.

10. A special drill bit for honeycomb aluminum panels according to claim 9, characterized in that: The drill head (2) is connected to an alloy cutter head (8), with a front angle and a rear angle designed to meet the low cutting force requirements of the honeycomb aluminum material.

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