High adaptability composite chamfering drill bit

Abstract

The utility model relates to the technical field of chamfering drill bit, concretely to a high adaptability composite chamfering drill bit, include: handle seat subassembly, drill pipe support subassembly sets up in handle seat subassembly bottom end, drill pipe subassembly sets up in drill pipe support subassembly bottom end, drill head subassembly sets up in drill pipe subassembly bottom end. The utility model adopts the modularization split design of drill pipe support subassembly, drill pipe subassembly, and each component is detachably connected through the slot, screw rod, can replace drill rod, chamfering cutter according to the processing demand such as different aperture, chamfer angle, work piece material, need not replace whole cutter, the inner groove blade of drill support, the drill blade groove one of drill pipe, the drill blade groove two of drill rod form the continuous chip removal channel, optimize the chip removal path, avoid the chip winding edge, and the double fixed structure that drill rod is positioned with plug -in slot and internal hexagonal screw rod two locking, ensure the concentricity of drill pipe subassembly and drill head subassembly.

Description

Technical Field

[0001] This utility model relates to the field of chamfering drill bit technology, specifically a highly adaptable composite chamfering drill bit. Background Technology

[0002] In automotive manufacturing, drilling and chamfering are frequent, fundamental processes in areas such as engine block and transmission housing machining, new energy vehicle battery tray machining, 5G communication equipment housing manufacturing, and aerospace titanium alloy component machining. Traditional machining requires drilling first, then changing tools for chamfering, which is not only cumbersome but also prone to misalignment issues due to secondary alignment, affecting component precision. Highly adaptable composite chamfering drills, however, integrate drilling and chamfering into a single process, avoiding these problems and meeting the core precision machining needs of various fields. For example, the high-efficiency chamfering requirements for high-temperature alloy materials in the domestically produced C919 large passenger aircraft after its mass delivery directly drove the research and development of such drills.

[0003] However, most existing chamfering drills are integrated fixed structures without modular disassembly design. Components such as the drill bit and chamfering cutter are not detachable from the main body. If different hole diameters or chamfer angles are required, or if different materials require different cutting capabilities, the entire tool must be replaced. Key working components cannot be replaced individually. The cutting grooves of existing composite chamfering drills are mostly independently designed, failing to form a continuous chip removal channel. The connection between the cutting grooves of the drill holder, drill rod, and drill bit is broken, obstructing the chip removal path and causing chips to accumulate and entangle at the cutting edge and component joints. This not only increases cutting resistance but also scratches the machined surface, affecting the chamfer flatness and hole wall quality. The connection between the existing drill bit and drill rod, and between the chamfering cutter and tool holder, mostly uses a single fixing method, lacking a double fixing structure for positioning and locking, resulting in large concentricity errors at the joints of various components.

[0004] Based on this, the present invention provides a highly adaptable composite chamfering drill bit to solve the aforementioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a highly adaptable composite chamfering drill bit to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model proposes a highly adaptable composite chamfering drill bit, comprising:

[0008] Handle assembly;

[0009] Drill pipe support assembly, the drill pipe support assembly is located at the bottom end of the shank assembly;

[0010] Drill pipe assembly, the drill pipe assembly is located at the bottom end of the drill pipe frame assembly;

[0011] The drill bit assembly is located at the bottom of the drill pipe assembly.

[0012] Preferably, the handle assembly includes a handle, with fixing grooves formed on both sides of the handle.

[0013] Preferably, the drill rod holder assembly includes a drill frame with internal grooves on both sides. One of the internal grooves is fixedly connected to an internal hexagonal screw, which in turn fixes a chamfering cutter to the drill frame.

[0014] Preferably, the drill rod assembly includes a drill rod with drill cutting grooves on both sides, one of which is embedded with an internal hexagonal screw, and a slot is provided at the bottom end of the drill rod.

[0015] Preferably, the drill bit assembly includes a drill bit rod with two drill cutting grooves on both sides, a plug rod fixedly connected to the top of the drill bit rod, a screw hole in the drill bit rod, the top of the plug rod connecting to the top of the inner wall of the slot, and two internal hexagonal screws bolted to the screw hole.

[0016] Preferably, the bottom end of the drill rod is fixedly connected to the top end of the drill bit.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model adopts a modular design for the drill rod holder assembly and the drill rod assembly. Each component is detachably connected through slots and screws. The drill rod and chamfering cutter can be quickly replaced according to processing requirements such as different hole diameters, chamfering angles, and workpiece materials without replacing the entire tool. The inner groove of the drill holder, the first drill groove of the drill rod, and the second drill groove of the drill rod form a continuous chip removal channel, optimizing the chip removal path and preventing chips from wrapping around the cutting edge. The drill rod is fixed by a double fixing structure of the insertion rod and slot positioning and the internal hexagonal screw two, ensuring the concentricity of the drill rod assembly and the drill bit assembly. The chamfering cutter is fixed to the drill holder by the internal hexagonal screw one. The drill rod is embedded in the inner groove and the first drill groove by the insertion rod, slot, internal hexagonal screw one, and internal hexagonal screw two, respectively, to prevent the screw from being exposed and deformed by the cutting force. This ensures that the chamfering cutter and the drill rod do not loosen or shift during high-speed rotating cutting. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the highly adaptable composite chamfering drill bit of this utility model;

[0019] Figure 2 This is a structural diagram of the highly adaptable composite chamfered drill bit shank assembly of this utility model;

[0020] Figure 3 This is a structural diagram of the highly adaptable composite chamfered drill bit drill rod holder assembly of this utility model;

[0021] Figure 4 This is a structural diagram of the highly adaptable composite chamfered drill bit drill rod assembly and drill bit assembly of this utility model.

[0022] Legend: 1. Shank assembly; 10. Shank; 11. Fixing groove; 2. Drill rod holder assembly; 20. Drill rod holder; 21. Inner groove cutting edge; 22. Socket hex screw one; 23. Chamfering cutter; 3. Drill rod assembly; 30. Drill rod; 31. Drill cutting edge groove one; 32. Socket hex screw two; 33. Slot; 4. Drill bit assembly; 40. Drill bit rod; 41. Drill cutting edge groove two; 42. Insert rod; 43. Screw hole; 44. Drill bit. Detailed Implementation

[0023] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0024] Example: Please refer to Figures 1 to 4 This utility model proposes a highly adaptable composite chamfering drill bit, comprising:

[0025] Handle assembly 1;

[0026] Drill rod holder assembly 2, which is located at the bottom end of shank seat assembly 1;

[0027] Drill pipe assembly 3 is located at the bottom end of drill pipe frame assembly 2;

[0028] Drill bit assembly 4 is located at the bottom of drill rod assembly 3.

[0029] Furthermore, it should be noted that the handle assembly 1 includes a handle 10, with fixing grooves 11 formed on both sides of the handle 10.

[0030] Example 1, please refer to Figure 2 When using this utility model, the operator first inserts the handle assembly 1 into the machine tool fixture. Through the fixing groove 11 and the fixing inside the fixture, the clamping stability with the machine tool fixture is achieved, reducing the wobble caused by vibration and sliding during the processing.

[0031] Furthermore, it should be noted that the drill rod holder assembly 2 includes a drill frame 20, with internal grooves 21 on both sides of the drill frame 20. One of the internal grooves 21 is internally connected to a hexagonal screw 22, which in turn fixes a chamfering cutter 23 to the drill frame 20.

[0032] Example 2, please refer to Figure 3When using this utility model, the shank assembly 1 drives the drill rod frame assembly 2 to rotate as a whole, and the inner groove blade 21 discharges the chips. After drilling is completed, the chamfering cutter 23, which is fixed by the embedded hexagonal screw 22, is placed against the edge to be chamfered to complete the chamfering. The inner groove blade 21 avoids chips from wrapping around the cutting edge, reduces cutting resistance and cutting edge wear, and further ensures the quality of the machined surface. The embedded hexagonal screw 22 prevents the screw from being exposed and deformed by the cutting force. The chamfering cutter 23 installed by the hexagonal screw 22 allows for quick replacement of the chamfering cutter 23 according to processing requirements such as different hole diameters, chamfering angles, and workpiece materials, without the need to replace the entire tool, thus solving the limitations of existing fixed-specification chamfering drill bits.

[0033] Furthermore, it should be noted that the drill rod assembly 3 includes a drill rod 30, with drill cutting grooves 31 on both sides of the drill rod 30. One of the drill cutting grooves 31 has an internal hexagonal screw 32 embedded in it, and a slot 33 is provided at the bottom of the drill rod 30.

[0034] Example 3, please refer to Figure 4 When using this utility model, the drill rod frame assembly 2 drives the drill rod assembly 3 to rotate as a whole, and the drill groove 31 discharges the chips, thereby avoiding the chips from wrapping around the cutting edge, reducing cutting resistance and cutting edge wear, and further ensuring the quality of the machined surface. The embedded hexagonal screw 32 prevents the screw from being exposed and deformed by the cutting force.

[0035] Furthermore, it should be noted that the drill bit assembly 4 includes a drill bit rod 40, with drill cutting grooves 41 on both sides of the drill bit rod 40, a plug rod 42 fixedly connected to the top of the drill bit rod 40, a screw hole 43 on the drill bit rod 40, the top of the plug rod 42 connected to the top of the inner wall of the slot 33, and an internal hexagonal screw 32 bolted to the screw hole 43.

[0036] Example 4, please refer to Figure 4 When using this utility model, the drill rod assembly 3 drives the drill bit assembly 4 to rotate as a whole, and the drill groove 41 discharges the chips, thereby avoiding the chips from wrapping around the cutting edge, reducing cutting resistance and cutting edge wear, and further ensuring the quality of the machined surface. The insert rod 42 is inserted into the slot 33, so that the drill bit assembly 4 can be quickly changed according to the processing requirements such as different hole diameters and workpiece materials without replacing the entire tool, which solves the limitation of the existing fixed specification drill bit 44.

[0037] Furthermore, it should be noted that the bottom end of the drill rod 40 is fixedly connected to the top end of the drill bit 44.

[0038] Example 5, please refer to Figure 4 The drill bit 44 is fixedly connected to the bottom end of the drill rod 40, achieving a compact structure.

[0039] Detailed implementation: For practical applications, please refer to... Figures 1 to 4When using this utility model, the operator changes the chamfering cutter 23 and drill assembly 4 according to the mold material and chamfering angle. Then, the internal hexagon screw 22 and internal hexagon screw 32 are tightened. Then, the shank assembly 1 is inserted into the machine tool fixture. The fixture is opened to make the shank assembly 1 rotate at high speed. Then, the shank assembly 1 drives the drill rod frame assembly 2, drill rod assembly 3, and drill assembly 4 to rotate at high speed. When drilling the mold, the debris flows out through the drill cutting groove 2 41, drill cutting groove 31, and inner groove 21. When it is necessary to chamfer the edge of the mold, the chamfering cutter 23 is lowered to fit against the edge of the mold hole to achieve chamfering.

[0040] This utility model adopts a modular design of drill rod holder assembly 2, drill rod assembly 3, and drill bit assembly 4. Each component is detachably connected via slot 33 and screw. The drill bit rod 40 and chamfering cutter 23 can be quickly changed according to processing requirements such as different hole diameters, chamfering angles, and workpiece materials without replacing the entire tool. This solves the limitations of existing fixed-specification chamfering drill bits. The shank 10 has fixing grooves 11 on both sides, which can enhance the clamping stability of the tool and the machine tool fixture and reduce the wobble caused by vibration and sliding during processing. The inner groove edge 21 of the drill holder 20, the drill cutting groove 31 of the drill rod 30, and the drill cutting edge of the drill rod 40 are all designed to meet the requirements. The second groove 41 forms a continuous chip removal channel, optimizes the chip removal path, avoids chips from wrapping around the cutting edge, reduces cutting resistance and cutting edge wear, and further ensures the quality of the machined surface. The drill rod 40 is positioned by the insert rod 42 and the slot 33 and locked by the internal hexagonal screw 32, which ensures the concentricity of the drill rod assembly 3 and the drill assembly 4, avoids the problem of uneven chamfering caused by concentricity error, and ensures that the chamfer of the hole is flat and the angle is accurate. The internal hexagonal screw 22 and the internal hexagonal screw 32 are both embedded in the inner groove 21 and the drill groove 31 respectively, to prevent the screw from being exposed and deformed by the cutting force.

[0041] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A highly adaptable composite chamfering drill bit, characterized in that, include: Handle assembly (1); Drill rod holder assembly (2), which is disposed at the bottom end of the shank assembly (1); Drill rod assembly (3), which is disposed at the bottom end of the drill rod frame assembly (2); Drill bit assembly (4) is disposed at the bottom end of the drill rod assembly (3).

2. The highly adaptable composite chamfering drill bit according to claim 1, characterized in that, The handle assembly (1) includes a handle (10), and fixing grooves (11) are provided on both sides of the handle (10).

3. The highly adaptable composite chamfering drill bit according to claim 2, characterized in that, The drill rod frame assembly (2) includes a drill frame (20), with inner grooves (21) on both sides of the drill frame (20). One of the inner grooves (21) is fixedly connected to an internal hexagonal screw (22), which fixes a chamfering cutter (23) to the drill frame (20).

4. A highly adaptable composite chamfering drill bit according to claim 3, characterized in that, The drill rod assembly (3) includes a drill rod (30), with drill cutting grooves (31) on both sides of the drill rod (30), one of which has an internal hexagonal screw (32) embedded in one side of the drill cutting groove (31), and a slot (33) at the bottom of the drill rod (30).

5. A highly adaptable composite chamfering drill bit according to claim 4, characterized in that, The drill bit assembly (4) includes a drill bit rod (40), with drill cutting grooves (41) on both sides of the drill bit rod (40), a plug rod (42) fixedly connected to the top of the drill bit rod (40), a screw hole (43) on the drill bit rod (40), the top of the plug rod (42) being connected to the top of the inner wall of the slot (33), and the hexagonal screw (32) being bolted to the screw hole (43).

6. A highly adaptable composite chamfering drill bit according to claim 5, characterized in that, The bottom end of the drill rod (40) is fixedly connected to the top end of the drill bit (44).

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