Aluminum alloy drill bit with replaceable blade

Abstract

The utility model belongs to the technical field of alloy drill bits, particularly relates to an aluminum alloy drill bit with a replaceable blade, and aims to solve the problems that the blade is abraded due to the fact that the existing blade is in contact with a workpiece and cuts the workpiece under the driving of a drill rod, and the blade cannot be independently replaced due to the integral design, so that the practicability is poor. According to the scheme, the drill bit comprises a drill bit fixing handle, one end of the drill bit fixing handle is telescopically connected with an adjusting piece, one end of the adjusting piece is provided with a cutting mechanism used for cutting a workpiece, and the other end of the drill bit fixing handle is provided with a cooling mechanism used for cooling a drill bit. According to the drill bit, the fixing screws on the cutting blades are screwed off, one independent cutting blade can be detached and replaced, use is convenient, the limiting bolt on the adjusting piece is screwed off, the limiting bolt is separated from the limiting hole in the connecting block, fixing of the connecting block can be relieved, and the drill bit body can be detached.

Description

Technical Field

[0001] This utility model relates to an aluminum alloy drill bit, specifically an aluminum alloy drill bit with replaceable cutting tools, belonging to the field of alloy drill bit technology. Background Technology

[0002] Aluminum alloy drill bits are specifically designed for drilling aluminum alloy materials. They typically use high-speed steel as the main material, with a specially treated surface that provides high hardness and wear resistance. Alternatively, drill bits made from high-hardness tungsten carbide alloys are also available, offering even greater durability. Due to the specialized materials and processing techniques, aluminum alloy drill bits feature efficient cutting, precise drilling, and resistance to wear and corrosion. They enable fast, smooth drilling into aluminum alloy materials, minimizing defects such as burrs and cracks.

[0003] In existing technologies, such as the chip-breaking module drill bit for aluminum alloy wheel hubs disclosed in CN211539618U, a chip-breaking groove is provided at the cutting edge of the countersunk hole machining section, and a chip-breaking module mounting groove is provided at the position of the spiral chip removal groove. A chip-breaking module is installed in the mounting groove, with the lower half of the module matching the mounting groove, and the upper half having a beveled surface with an angle conforming to the spiral chip removal groove of the drill bit and a chip-breaking stop perpendicular to the chip removal direction of the drill bit. This achieves the effect of two-stage chip breaking during countersunk hole machining, solving the appearance quality defects caused by scratches and abrasions from long aluminum chips at the junction of the countersunk hole and the cast surface.

[0004] While the above technical solution can achieve the effect of breaking aluminum chips twice during the countersinking of bolt holes and solve the appearance quality defects caused by scratches and abrasions of long aluminum chips at the junction of the countersink and the cast surface, the cutting tool will wear down when it is in use because the cutting tool is driven by the drill rod to contact and cut the workpiece. Since it is an integral design, the cutting tool cannot be replaced separately, resulting in poor practicality. Therefore, an aluminum alloy drill bit with replaceable cutting tool is provided to overcome the above defects. Utility Model Content

[0005] This invention addresses the problem that the aforementioned cutting blades, driven by the drill rod, come into contact with and cut the workpiece, leading to wear on the blades. Furthermore, the integrated design prevents individual blade replacement, resulting in poor applicability. Therefore, this invention provides a replaceable-blade aluminum alloy drill bit.

[0006] The present invention achieves the above objectives through the following technical solution: an aluminum alloy drill bit with replaceable blades, comprising a drill bit fixing shank, one end of which is telescopically connected to an adjusting member, one end of which is provided with a cutting mechanism for cutting the workpiece, and the other end of which is provided with a cooling mechanism for cooling the drill bit.

[0007] The cutting mechanism includes a drill bit body connected to one end of an adjusting component. Three sets of cutting blades are mounted on the outer surface of the drill bit body. Each of the three sets of cutting blades has a fixing screw that is threadedly connected to the drill bit body. Chip removal grooves are formed on the outer surface of the drill bit body.

[0008] As a further improvement of this utility model: a connecting block is fixed on the right side of the drill bit body, and a limit hole is formed on the outer surface of the connecting block.

[0009] As a further improvement of this utility model, the limiting hole is internally connected to a limiting bolt that is threadedly connected to the adjusting component.

[0010] As a further embodiment of this utility model: a fixing bolt is installed on the outer surface of the drill bit fixing shank, and the end of the fixing bolt is in contact with the outer surface of the adjusting member.

[0011] As a further improvement of this utility model: a limiting ring is fixed on the right side of the adjusting member and slides inside the drill bit fixing handle, and two guide blocks are symmetrically fixed on the outer wall of the limiting ring.

[0012] As a further improvement of this utility model, the outer surfaces of both guide blocks are slidably connected to guide grooves formed on the inner wall of the drill bit fixing shank.

[0013] As a further embodiment of this utility model: the cooling mechanism includes a fixing member, which is installed inside the drill bit fixing shank. The inner wall of the fixing member is rotatably connected to a water inlet pipe via a bearing. The outer wall of the drill bit body is provided with a water spray hole that communicates with the adjusting member.

[0014] The beneficial effects of this utility model are: by unscrewing the fixing screws on the cutting blade, a single cutting blade can be disassembled and replaced, which is convenient for use; and by unscrewing the limiting bolts on the adjusting part, the limiting bolts and the limiting holes on the connecting block can be separated, thus releasing the fixing of the connecting block and allowing the drill body to be disassembled.

[0015] The water inlet pipe on the drill bit is connected to the output end of the external coolant delivery device, allowing coolant to enter the drill bit retainer. The retainer prevents the water inlet pipe from falling off. The continuously entering coolant passes through the connecting block into the drill bit body and is sprayed out through the spray nozzle, thereby cooling the cutting blades and improving practicality. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2This is a cross-sectional structural diagram of the drill bit fixing shank of this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of the drill bit body of this utility model;

[0019] Figure 4 This is a three-dimensional structural diagram of the adjusting component of this utility model.

[0020] In the diagram: 1. Drill bit retaining shank; 2. Adjusting component; 3. Drill bit body; 31. Cutting blade; 32. Fixing screw; 33. Chip removal groove; 34. Connecting block; 35. Limiting hole; 36. Limiting bolt; 4. Fixing bolt; 5. Limiting ring; 6. Guide block; 7. Guide groove; 8. Fixing component; 81. Water inlet pipe; 9. Water spray hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0022] like Figures 1 to 4 As shown, an aluminum alloy drill bit with replaceable blades includes a drill bit fixing shank 1, one end of which is telescopically connected to an adjusting member 2. One end of the adjusting member 2 is provided with a cutting mechanism for cutting the workpiece, and the other end of the drill bit fixing shank 1 is provided with a cooling mechanism for cooling the drill bit.

[0023] The cutting mechanism includes a drill body 3, which is connected to one end of an adjusting member 2. Three sets of cutting blades 31 are mounted on the outer surface of the drill body 3. Each of the three sets of cutting blades 31 has a fixing screw 32 threadedly connected to the drill body 3. A chip removal groove 33 is formed on the outer surface of the drill body 3. A connecting block 34 is fixed to the right side of the drill body 3. A limit hole 35 is formed on the outer surface of the connecting block 34. A limit bolt 36 threadedly connected to the adjusting member 2 is inserted into the limit hole 35. The drill bit fixing shank 1 is rotated by the machine tool to process the workpiece. The rotation of the cutting blade 31 causes the cutting blade 31 to cut the workpiece, and the chip removal groove 33 provided on the drill body 3 can discharge the waste chips generated during cutting. When the cutting blade 31 is damaged or worn, the fixing screw 32 on the cutting blade 31 can be unscrewed, so that a single cutting blade 31 can be disassembled and replaced for easy use. Furthermore, by unscrewing the limiting bolt 36 on the adjusting member 2, the limiting bolt 36 and the limiting hole 35 on the connecting block 34 are separated, so that the fixing of the connecting block 34 can be released, and the drill body 3 can be disassembled for easy use. Example 2

[0024] In addition to all the technical features in Embodiment 1, this embodiment also includes: a fixing bolt 4 is installed on the outer surface of the drill bit fixing handle 1, the end of the fixing bolt 4 is abutted against the outer surface of the adjusting member 2, a limiting ring 5 is fixed on the right side of the adjusting member 2 and is slidably connected to the inside of the drill bit fixing handle 1, two guide blocks 6 are symmetrically fixed on the outer wall of the limiting ring 5, and the outer surfaces of the two guide blocks 6 are slidably connected to guide grooves 7 opened in the inner wall of the drill bit fixing handle 1, the cooling mechanism includes a fixing member 8, the fixing member 8 is placed inside the drill bit fixing handle 1, the inner wall of the fixing member 8 is rotatably connected to a water inlet pipe 81 through a bearing, and the outer wall of the drill bit body 3 is provided with a connection to the adjusting member 2. When the fixing bolt 4 is loosened, the fixing of the adjusting part 2 can be released from the water spray hole 9. With the cooperation of the limit ring 5, the adjusting part 2 can be pulled to move. The guide block 6 and guide groove 7 can play a limiting and guiding role. This allows the overall length of the drill bit to be adjusted for easy use. In addition, the water inlet pipe 81 on the drill bit is connected to the output end of the external coolant delivery equipment, so that the coolant can enter the drill bit fixing shank 1. The fixing part 8 can prevent the water inlet pipe 81 from falling off. The coolant that continuously enters the interior will enter the drill bit body 3 through the connecting block 34 and be sprayed out through the water spray hole 9, thereby cooling the cutting blade 31 and improving its practicality.

[0025] Working principle: Before using the replaceable-blade aluminum alloy drill bit, first connect and fix the drill bit fixing shank 1 to the output shaft of the machine tool. The machine tool drives the drill bit fixing shank 1 to rotate, thereby machining the workpiece. The rotation of the drill bit body 3 causes the cutting blade 31 to cut the workpiece, and the chip removal groove 33 on the drill bit body 3 can discharge the waste chips generated during cutting. When the cutting blade 31 is damaged or worn, the fixing screw 32 on the cutting blade 31 can be unscrewed, so that the individual cutting blade 31 can be disassembled and replaced for easy use. Furthermore, by unscrewing the limiting bolt 36 on the adjusting part 2, the limiting bolt 36 and the limiting hole 35 on the connecting block 34 are separated, thus releasing the... The fixing of the connecting block 34 allows for the disassembly of the drill bit body 3 for easy use. Loosening the fixing bolt 4 releases the fixing of the adjusting component 2. With the cooperation of the limit ring 5, the adjusting component 2 can be pulled to move. The guide block 6 and guide groove 7 provide limiting and guiding functions, allowing for adjustment of the overall length of the drill bit for convenient use. Furthermore, the water inlet pipe 81 on the drill bit is connected to the output end of the external coolant delivery equipment, allowing coolant to enter the drill bit fixing shank 1. The fixing component 8 prevents the water inlet pipe 81 from falling off. The continuously entering coolant passes through the connecting block 34 into the drill bit body 3 and is sprayed out through the water spray hole 9, thereby cooling the cutting blade 31 and improving its practicality.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A replaceable-blade aluminum alloy drill bit, comprising a drill bit retaining shank (1), characterized in that: One end of the drill bit fixing shank (1) is telescopically connected to an adjusting member (2), one end of the adjusting member (2) is provided with a cutting mechanism for cutting the workpiece, and the other end of the drill bit fixing shank (1) is provided with a cooling mechanism for cooling the drill bit. The cutting mechanism includes a drill body (3), which is connected to one end of the adjusting member (2). Three sets of cutting blades (31) are installed on the outer surface of the drill body (3). The three sets of cutting blades (31) are each fitted with a fixing screw (32) that is threadedly connected to the drill body (3). Chip removal grooves (33) are provided on the outer surface of the drill body (3).

2. The aluminum alloy drill bit with replaceable cutting tools according to claim 1, characterized in that: A connecting block (34) is fixed on the right side of the drill bit body (3), and a limit hole (35) is opened on the outer surface of the connecting block (34).

3. The aluminum alloy drill bit with replaceable cutting tools according to claim 2, characterized in that: The limiting hole (35) is internally connected to a limiting bolt (36) that is threadedly connected to the adjusting member (2).

4. The aluminum alloy drill bit with replaceable cutting tools according to claim 1, characterized in that: The outer surface of the drill bit fixing shank (1) is fitted with a fixing bolt (4), and the end of the fixing bolt (4) is connected to the outer surface of the adjusting member (2).

5. The aluminum alloy drill bit with replaceable cutting tools according to claim 4, characterized in that: The right side of the adjusting member (2) is fixed with a limiting ring (5) that slides inside the drill bit fixing handle (1), and two guide blocks (6) are symmetrically fixed on the outer wall of the limiting ring (5).

6. The aluminum alloy drill bit with replaceable cutting tools according to claim 5, characterized in that: The outer surfaces of the two guide blocks (6) are slidably connected to guide grooves (7) formed on the inner wall of the drill bit fixing shank (1).

7. The aluminum alloy drill bit with replaceable cutting tools according to claim 1, characterized in that: The cooling mechanism includes a fixing member (8), which is placed inside the drill bit fixing handle (1). The inner wall of the fixing member (8) is rotatably connected to a water inlet pipe (81) via a bearing. The outer wall of the drill bit body (3) is provided with a water spray hole (9) that communicates with the adjusting member (2).

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