Stepped cutting drill bit

Abstract

The utility model relates to the technical field of drill bit structures, and discloses a stepped cutting drill bit which comprises a stepped cutting drill bit body. The dismounting and mounting mechanism is arranged at the bottom of the stepped cutting drill bit main body, and the dismounting and mounting mechanism is used for facilitating an operator to replace the stepped cutting drill bit main body; and the heat dissipation mechanism is arranged at the bottom of the disassembly and assembly mechanism. Through the design of the heat dissipation mechanism, in the process that the machine body drives the stepped cutting drill bit body to rotate to achieve cutting, the extension shaft can rotate, the blades are synchronously driven to rotate in the inner cavity of the fixed cylinder piece, air is absorbed from the bottom of the fixed cylinder piece, and then the air penetrates through the flow dividing holes to be output; and the heat at the stepped cutting drill bit main body is quickly taken away through flowing of the normal-temperature gas, so that the function of heat dissipation treatment on the stepped cutting drill bit main body is realized.

Description

Technical Field

[0001] This utility model relates to the field of drill bit structure technology, specifically to a stepped cutting drill bit. Background Technology

[0002] A stepped-cutting drill bit is a special type of drill bit with a stepped structure of varying diameters. The drill head is relatively wide, the tip is small, and the overall structure is a stepped pattern of different diameters. This design allows for better control over the drilling depth and diameter. Stepped-cutting drill bits can be used for drilling various materials, such as thin steel plates, wood, metals, and stone. One drill bit can replace multiple drill bits, machining holes of different diameters as needed, enabling the completion of large holes in a single pass, thus improving processing efficiency.

[0003] Existing stepped cutting drill bits do not have automatic heat dissipation function. When using stepped cutting drill bits to continuously process materials, the drill bit will heat up due to cutting the material. Excessive heat will accumulate on the drill bit and cannot be dissipated in time. This situation can easily affect the service life of the drill bit and also easily lead to the problem of continuous processing interruption, affecting the processing quality of the material. Utility Model Content

[0004] The purpose of this invention is to provide a stepped cutting drill bit to solve the problem that stepped cutting drill bits in the prior art are easily damaged due to insufficient heat dissipation when continuously processing materials.

[0005] This utility model provides the following technical solution: a stepped cutting drill bit, comprising:

[0006] Stepped-shaped cutting drill bit body;

[0007] The disassembly and assembly mechanism is located at the bottom of the stepped cutting drill bit body and is used to facilitate the operator to replace the stepped cutting drill bit body.

[0008] A heat dissipation mechanism is located at the bottom of the disassembly and assembly mechanism, and is used to provide heat dissipation protection for the stepped cutting drill bit body.

[0009] As a preferred embodiment of the above technical solution, the disassembly and assembly mechanism includes a connecting sleeve, a connecting block is movably inserted into the inner cavity of the connecting sleeve, the stepped cutting drill bit body is fixedly installed on the top of the connecting block, and assembly grooves are provided on the sides of both the connecting sleeve and the connecting block.

[0010] The above technical solution, through the connection design of the connecting sleeve and connecting block, facilitates the operator to replace the damaged stepped cutting drill bit body.

[0011] As a preferred embodiment of the above technical solution, an assembly block is movably inserted into the inner cavity of the assembly groove, and a locking bolt is threaded to the end of the assembly block.

[0012] Through the above technical solution, the assembly block can be positioned in the inner cavity of the assembly slot by means of the locking bolt design.

[0013] As a preferred embodiment of the above technical solution, the heat dissipation mechanism includes a fixed component and a rotating component. The fixed component includes a fixed reference plate, the top of which has a through hole. A connecting block is fixedly installed on the top of the fixed reference plate, and a fixed cylinder is fixedly installed at the end of the connecting block.

[0014] Through the above technical solution, the design of the connecting block creates a gap between the bottom of the fixed cylinder and the fixed reference plate, facilitating the entry of airflow.

[0015] As a preferred embodiment of the above technical solution, a top plate is fixedly installed on the top of the fixed cylinder, a diversion hole is opened on the top of the top plate, and a guide fin is fixedly installed on the top of the top plate.

[0016] Through the above technical solution, the airflow can be accurately delivered to the stepped cutting drill bit body by combining the diversion hole and the guide fin, thereby improving the heat dissipation effect.

[0017] As a preferred embodiment of the above technical solution, the rotating component includes a rotating seat, which is rotatably connected to the inner wall of the fixed reference disk, and a protrusion is fixedly connected to the bottom of the rotating seat.

[0018] The above technical solution, through the design of the protrusion block, facilitates the transmission connection between the rotating parts of this structure and the output shaft of the machine body.

[0019] As a preferred embodiment of the above technical solution, an extension shaft is fixedly connected to the top of the rotating seat, the connecting sleeve is fixedly installed on the top of the extension shaft, and blades are fixedly installed on the outer wall of the extension shaft.

[0020] Through the above technical solution, by extending the shaft and designing the blades, airflow can be pushed to dissipate heat when the stepped cutting drill bit body is rotating.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] This invention utilizes a heat dissipation mechanism. During the cutting process, as the main body of the stepped cutting drill bit rotates, the extension shaft rotates, simultaneously driving the blades to rotate within the inner cavity of the fixed cylinder. This draws air from the bottom of the fixed cylinder, which then passes through the diversion hole and is guided by the guide fins to the stepped cutting drill bit body. The flow of ambient temperature gas quickly removes heat from the stepped cutting drill bit body, achieving heat dissipation and ensuring the stability of the stepped cutting drill bit body during continuous material cutting, thus extending its service life. Attached Figure Description

[0023] Figure 1 This is a perspective view of the present utility model;

[0024] Figure 2 This is an exploded view of the disassembly and assembly mechanism of this utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the fixed reference disk and the rotating component of this utility model;

[0026] Figure 4 This is a schematic diagram of the bottom structure of the rotating seat of this utility model;

[0027] Figure 5 This is a structural schematic diagram of the fixing cylinder and top plate of this utility model;

[0028] Figure 6 This is a schematic diagram of the separation structure of the fixed reference plate and the machine body of this utility model.

[0029] In the figure: 1. Stepped cutting drill bit body; 2. Disassembly and assembly mechanism; 21. Connecting sleeve; 22. Connecting insert; 23. Assembly slot; 24. Assembly block; 25. Locking bolt; 3. Heat dissipation mechanism; 31. Fixed reference plate; 311. Through hole; 312. Connecting block; 313. Fixed cylinder; 314. Top plate; 315. Diverter hole; 316. Guide fin; 32. Rotating seat; 321. Protrusion block; 33. Extension shaft; 34. Blade. Detailed Implementation

[0030] 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.

[0031] like Figures 1-6 As shown, this utility model provides a technical solution: a stepped cutting drill bit, comprising:

[0032] Stepped cutting drill bit body 1;

[0033] The disassembly and assembly mechanism 2 is located at the bottom of the stepped cutting drill bit body 1. The disassembly and assembly mechanism 2 is used to facilitate the operator to replace the stepped cutting drill bit body 1.

[0034] The heat dissipation mechanism 3 is located at the bottom of the disassembly and assembly mechanism 2. The heat dissipation mechanism 3 is used to provide heat dissipation protection for the stepped cutting drill bit body 1.

[0035] As one implementation method in this embodiment, such as Figure 2 As shown, the disassembly and assembly mechanism 2 includes a connecting sleeve 21. A connecting block 22 is movably inserted into the inner cavity of the connecting sleeve 21. The stepped cutting drill body 1 is fixedly installed on the top of the connecting block 22. The sides of the connecting sleeve 21 and the connecting block 22 are provided with assembly grooves 23. An assembly block 24 is movably inserted into the inner cavity of the assembly groove 23. A locking bolt 25 is threaded to the end of the assembly block 24. The connecting block 22 is inserted into the connecting sleeve 21, and then the assembly block 24 is inserted into the assembly grooves 23 of the connecting sleeve 21 and the connecting block 22. Then, the locking bolt 25 is screwed into the end of the assembly block 24, thus completing the installation of the stepped cutting drill body 1. The locking bolt 25 is removed from the end of the assembly block 24, and then the assembly block 24 is pulled out from the connecting sleeve 21. The stepped cutting drill body 1 can then be disassembled. This design facilitates the operator to replace the damaged stepped cutting drill body 1.

[0036] As one implementation method in this embodiment, such as Figure 3 , Figure 4 , Figure 5As shown, the heat dissipation mechanism 3 includes a fixed component and a rotating component. The fixed component includes a fixed reference plate 31, with a through hole 311 on the top of the fixed reference plate 31. A connecting block 312 is fixedly installed on the top of the fixed reference plate 31, and a fixed cylinder 313 is fixedly installed at the end of the connecting block 312. A top plate 314 is fixedly installed on the top of the fixed cylinder 313, with a diversion hole 315 on the top of the top plate 314. A guide fin 316 is fixedly installed on the top of the top plate 314. The rotating component includes a rotating seat 32, which is rotatably connected to the inner wall of the fixed reference plate 31. A protrusion 321 is fixedly connected to the bottom of the rotating seat 32, and an extension shaft 33 is fixedly connected to the top of the rotating seat 32. A connecting sleeve 21 is fixedly installed on the top of the extension shaft 33. Blades 34 are fixedly installed on the outer wall of the machine body 33. During operation, the stepped cutting drill body 1 can be driven to rotate by the protrusion 321, rotating seat 32, extension shaft 33 and disassembly mechanism 2, so as to realize the function of cutting and opening holes in the material by means of the stepped cutting drill body 1. During this process, the extension shaft 33 will drive the blades 34 to rotate in the inner cavity of the fixed cylinder 313. Through the rotation of the blades 34, air is absorbed from the bottom of the fixed cylinder 313, and then output through the diversion hole 315. Then, it is guided and sprayed to the stepped cutting drill body 1 by the guide fins 316. The heat of the stepped cutting drill body 1 is quickly carried away by the flow of room temperature gas, so as to realize the function of heat dissipation treatment of the stepped cutting drill body 1.

[0037] As one implementation method in this embodiment, such as Figure 6 As shown, the structure below the fixed reference plate 31 represents the existing machine body. The machine body provides power for the rotation of the stepped cutting drill bit body 1. The output shaft of the machine body is provided with a groove that fits with the protrusion 321. The machine body is provided with a threaded hole corresponding to the through hole 311. The structure can be installed on the machine body by means of bolts passing through the through hole 311 and connecting to the threaded hole on the machine body. During the installation process, the output shaft of the machine body cooperates with the protrusion 321 through the groove so that the existing machine body can drive the rotating seat 32 to rotate when it is working.

[0038] Working principle: During installation, the structure is connected to the machine body from the fixed reference plate 31, so that the output shaft of the machine body cooperates with the protrusion 321 through the groove to control the operation of the machine body. The output shaft of the machine body drives the rotating seat 32 to rotate, and then drives the stepped cutting drill bit body 1 to rotate through the transmission of the extension shaft 33 and the disassembly and assembly mechanism 2. This realizes the function of cutting and opening holes in materials with the help of the stepped cutting drill bit body 1. During this process, the extension shaft 33 drives the blades 34 to rotate in the inner cavity of the fixed cylinder 313. Through the rotation of the blades 34, air is drawn from the bottom of the fixed cylinder 313, then output through the diversion hole 315, and then guided and sprayed to the stepped cutting drill bit body by the guide fins 316. At the drill bit body 1, the heat of the stepped cutting drill bit body 1 is quickly carried away by the flow of room temperature gas, realizing the function of heat dissipation treatment of the stepped cutting drill bit body 1. If it is necessary to replace the damaged stepped cutting drill bit body 1, the locking bolt 25 is removed from the end of the assembly block 24, and then the assembly block 24 is pulled out from the connecting sleeve 21. Then the stepped cutting drill bit body 1 can be disassembled. Then the connecting plug 22 with the new stepped cutting drill bit body 1 is inserted into the connecting sleeve 21. Then the assembly block 24 is inserted into the assembly groove 23 of the connecting sleeve 21 and the connecting plug 22. Then the locking bolt 25 is screwed into the end of the assembly block 24, thus completing the installation of the stepped cutting drill bit body 1.

[0039] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A stepped cutting drill bit, characterized in that, include: Stepped cutting drill bit body (1); The disassembly and assembly mechanism (2) is located at the bottom of the stepped cutting drill body (1). The disassembly and assembly mechanism (2) is used to facilitate the operator to replace the stepped cutting drill body (1). Heat dissipation mechanism (3) is located at the bottom of disassembly and assembly mechanism (2) and is used to provide heat dissipation protection for the stepped cutting drill body (1).

2. A stepped cutting drill bit according to claim 1, characterized in that: The disassembly and assembly mechanism (2) includes a connecting sleeve (21), in which a connecting block (22) is movably inserted. The stepped cutting drill bit body (1) is fixedly installed on the top of the connecting block (22). The connecting sleeve (21) and the connecting block (22) are both provided with assembly slots (23).

3. A stepped cutting drill bit according to claim 2, characterized in that: An assembly block (24) is movably inserted into the inner cavity of the assembly groove (23), and a locking bolt (25) is threaded to the end of the assembly block (24).

4. A stepped cutting drill bit according to claim 2, characterized in that: The heat dissipation mechanism (3) includes a fixed component and a rotating component. The fixed component includes a fixed reference plate (31). The top of the fixed reference plate (31) is provided with a through hole (311). A connecting block (312) is fixedly installed on the top of the fixed reference plate (31). A fixed cylinder (313) is fixedly installed at the end of the connecting block (312).

5. A stepped cutting drill bit according to claim 4, characterized in that: A top plate (314) is fixedly installed on the top of the fixed cylinder (313), and a diversion hole (315) is opened on the top of the top plate (314). A guide fin (316) is fixedly installed on the top of the top plate (314).

6. A stepped cutting drill bit according to claim 5, characterized in that: The rotating component includes a rotating seat (32), which is rotatably connected to the inner wall of the fixed reference disk (31), and a protrusion (321) is fixedly connected to the bottom of the rotating seat (32).

7. A stepped cutting drill bit according to claim 6, characterized in that: An extension shaft (33) is fixedly connected to the top of the rotating seat (32), and a connecting sleeve (21) is fixedly installed on the top of the extension shaft (33). A blade (34) is fixedly installed on the outer wall of the extension shaft (33).

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