Single-point tapered drill

Abstract

The utility model relates to the technical field of drill bit, disclose single blade with conical drill, including drill bit, the drill bit outer wall sets up main cutting edge, auxiliary cutting edge, spiral material feeding groove and single blade with body in proper order, the drill bit outer wall fixedly connected with drill handle, the drill handle outer wall fixedly connected with switchover joint no.

Description

Technical Field

[0001] This utility model relates to the field of drill bit technology, and in particular to a single-edged tapered drill. Background Technology

[0002] The single-edged tapered drill is a commonly used hole-making tool in the woodworking industry. Its unique tapered structure and single-edged design effectively reduce wood splitting during drilling, making it particularly suitable for precise drilling of various materials such as hardwood and softwood. Whether it is for drilling holes for connecting parts in furniture manufacturing or for drilling holes for assembling wooden components in building decoration, the single-edged tapered drill has become a key tool for improving the quality and efficiency of woodworking due to its high drilling efficiency and regular hole shape. It has a wide range of applications in both handicrafts and industrial production.

[0003] The existing wood drilling tapered drill mainly consists of an integrated drill body, drill shank, and cutting edge. Mechanically, the drill body is tapered with a single main cutting edge at the head. The drill shank is mostly cylindrical and fixedly connected to the drill body. The end of the drill shank is usually designed with a specific connecting structure. The tapered drill is connected to the electric drill through the drill shank. The rotational power provided by the electric drill is used to cut the wood with the main cutting edge. During the drilling process, an axial thrust needs to be applied manually to force the drill body into the wood. At the same time, the guiding effect of the tapered structure ensures the drilling direction. The cutting debris is discharged through a simple groove on the surface of the drill body.

[0004] Existing tapered drills, due to their integrated drill body and shank design and fixed shank connection specifications, make drill bit replacement difficult. When changing drill bits for different hole diameters, special tools such as wrenches are required to disassemble the connection between the drill and the shank, which is cumbersome and time-consuming. Especially in batch processing scenarios, frequent replacements will affect work efficiency. At the same time, the fixed shank connection structure can only be used with specific models of drills. If different brands or specifications of drills are required, the entire set of drill bits must be replaced, which not only increases tool procurement costs but also occupies more storage space due to the large number of tools, making it difficult to meet the needs of diverse processing scenarios. Therefore, a single-edged tapered drill is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a single-edged tapered drill, which aims to improve the problem of difficulty in replacing drill bits caused by the integrated design of the drill body and drill shank of existing tapered drills and the fixed specifications of the drill shank connection structure.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a single-edged tapered drill, comprising a drill bit, wherein the outer wall of the drill bit is sequentially provided with a main cutting edge, an auxiliary cutting edge, a spiral feed groove and a single-edged body, a drill shank is fixedly connected to the outer wall of the drill bit, a conversion joint one is fixedly connected to the outer wall of the drill shank, a connecting block one is fixedly connected to the outer wall of the conversion joint one, a threaded sleeve is threadedly connected to the inner wall of the connecting block one, a conversion joint two is threadedly connected to the inner wall of the threaded sleeve, and a quick-release assembly is provided inside the conversion joint two; The quick-release assembly includes a connecting block three and a limiting block. The connecting block three is disposed inside the adapter two. The outer wall of the limiting block is fixedly connected to the outer wall of the connecting block three. The limiting block is disposed on the inner wall of the adapter one. The inner wall of the adapter one is slidably connected to the connecting block two. A telescopic rod is fixedly connected to one side of the outer wall of the connecting block two. A spring is sleeved on the outer wall of the telescopic rod. One end of the spring is fixedly connected to the inner wall of the adapter one, and the other end of the spring is fixedly connected to one side of the outer wall of the connecting block two.

[0007] Through the above technical solution, the main cutting edge and auxiliary cutting edge on the outer wall of the drill bit are key to directly cutting wood. The single-edged blade with body provides precise guidance for drilling and avoids drill bit wobbling. The spiral feed groove is responsible for timely discharge of cutting debris. The three work together to ensure a stable and efficient drilling process. The drill shank acts as a connecting bridge, fixing the drill bit and adapter one as a whole, realizing the transmission of power from the conversion component to the drill bit. Adapter one, connecting block one, threaded sleeve and adapter two are connected by threads to form a stable power transmission link, ensuring that the power of the electric drill can be effectively transmitted to the drill bit. The quick-release component works with connecting block two, telescopic rod and spring to form a quick-operation disassembly structure. The limiting block is inserted into the inner wall of adapter one to achieve initial fixation. When adapter two is pressed, connecting block three drives the limiting block to slide. Connecting block two squeezes the spring and telescopic rod, causing the limiting block to disengage from the fixed position, thereby realizing quick assembly and disassembly of the drill bit. This not only ensures the connection stability during drilling, but also provides convenient operation for drill bit replacement, allowing the tool to flexibly adapt to different drilling needs.

[0008] Preferably, the third connecting block is disposed on the other side of the outer wall of the second connecting block, and the third connecting block is disposed on the inner wall of the first conversion joint.

[0009] Through the above technical solution, the connection between connecting block 3 and connecting block 2 forms a force transmission path, ensuring that when the conversion connector 2 is pressed, the limiting block can be effectively driven to slide, thus ensuring the smoothness of the quick-release operation.

[0010] Preferably, there are two limiting blocks, which are arranged symmetrically along the top and bottom.

[0011] Through the above technical solution, the symmetrically distributed limiting blocks can be simultaneously engaged in the limiting groove of the first adapter from both the top and bottom sides, making the connection between the first adapter and the second adapter more balanced and stable, avoiding shaking or falling off due to unilateral force during drilling, and improving the overall connection reliability of the tool.

[0012] Preferably, the second adapter, the third connecting block, and the limiting block are integrally formed.

[0013] Through the above technical solution, the one-piece molding design eliminates the assembly gap between the conversion connector 2, the connecting block 3 and the limiting block, enhances the structural rigidity of the three components, makes the quick-release assembly less prone to damage during repeated operations, extends the service life of the components, and at the same time ensures the directness of force transmission and improves the quick-release response speed.

[0014] Preferably, the adapter and the connecting block are integrally formed.

[0015] Through the above technical solution, the one-piece molding makes the adapter one and the connecting block one a solid whole, avoiding loosening when the threaded connection is under stress or when drilling is vibrating, ensuring the stability of the connection foundation between adapter one and adapter two, and providing reliable support for power transmission and quick disassembly operation.

[0016] Preferably, the drill bit and the drill shank are made of rigid material and are integrally formed.

[0017] Through the above technical solutions, the rigid material ensures that the drill bit is not easily deformed when cutting wood, meeting the drilling strength requirements, while the one-piece molding strengthens the connection between the drill bit and the drill shank, preventing them from separating due to excessive torque during drilling, ensuring that power can be efficiently transmitted to the drill bit, and guaranteeing the stability of drilling operations.

[0018] Preferably, the spiral feed chute is used to discharge wood chips during the drilling process.

[0019] Through the above technical solution, the spiral feed chute uses a spiral structure to rotate with the drill bit and discharge the debris in a directional manner, preventing the debris from accumulating in the drilling area and increasing cutting resistance, scratching the hole wall, or causing the drill bit to jam, thus ensuring continuous and efficient cutting and improving drilling quality and efficiency.

[0020] Preferably, the adapter has a rectangular slot inside, which is used to connect with an electric drill to transmit the power of the electric drill.

[0021] Through the above technical solution, the rectangular slot serves as an adapter interface with the electric drill, which can not only stably engage the output end of the electric drill, but also transmit torque through the rectangular structure, ensuring that the rotational power of the electric drill is efficiently transmitted to the entire drill bit assembly. At the same time, the standardized slot design can be adapted to electric drills of various specifications, improving the versatility of the tool.

[0022] This utility model has the following beneficial effects: 1. In this utility model, when changing the drill bit, it is only necessary to rotate the threaded sleeve to release the thread lock between it and the connecting block 1 on the adapter, and then press the adapter 2 to drive the connecting block 3 and the limiting block to slide, so that the connecting block 2 squeezes the spring and the telescopic rod. After the limiting block is disengaged from the limiting groove of the adapter 1, the old drill bit can be easily rotated and pulled out. The whole process does not require special tools. Through the rectangular slot of the adapter 2, it can be adapted to electric drills of different specifications. With the sliding connection design between the drill shank and the adapter 1, it can flexibly accommodate electric drills of various shapes and sizes, greatly expanding the applicability of the tool and meeting the drilling needs under different working conditions.

[0023] 2. In this utility model, during drilling operations, the main cutting edge and auxiliary cutting edge of the drill bit integrated on the outside form a composite cutting structure. Combined with the precise guidance of the drilling trajectory by the single-edged drill bit with body, and the timely chip removal function of the spiral feed groove drill bit, it can significantly reduce the resistance of wood chips to the drill bit during high-speed rotating cutting, avoid problems such as swaying and jamming during drilling, ensure uniform drilling depth and smooth hole wall, and greatly improve the accuracy and surface quality of wood drilling. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the single-edged tapered drill proposed in this utility model; Figure 2 This is a schematic diagram of the spiral feed groove structure of the single-edged conical drill proposed in this utility model. Figure 3 This is a partial structural diagram of the connecting block with a single-edged tapered drill proposed in this utility model. Figure 4 This is a schematic diagram of the spring portion of the single-edged tapered drill proposed in this utility model. Figure 5 This is a schematic diagram of the limiting block structure of the single-edged tapered drill proposed in this utility model.

[0025] Legend: 1. Drill bit; 2. Drill shank; 3. Adapter connector one; 4. Connecting block one; 5. Threaded sleeve; 6. Adapter connector two; 7. Main cutting edge; 8. Auxiliary cutting edge; 9. Spiral feed groove; 10. Single-edged belt body; 11. Rectangular slot; 12. Telescopic rod; 13. Spring; 14. Connecting block two; 15. Limiting block; 16. Connecting block three. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1 - Appendix Figure 5 This application will be described in further detail below.

[0027] Reference Figure 1 , Figure 3 , Figure 4 and Figure 5 The present invention provides an embodiment of a single-blade tapered drill, comprising a drill bit 1. The outer wall of the drill bit 1 is provided with a main cutting edge 7, an auxiliary cutting edge 8, a spiral feed groove 9, and a single-blade tapered body 10. The main cutting edge 7 is the main cutting edge that directly cuts wood and undertakes the main cutting task during rotation. It works with other structures to improve drilling efficiency. The auxiliary cutting edge 8 works with the main cutting edge 7 to assist in cutting wood, enhance the cutting effect, reduce resistance during drilling, and improve the stability of the drill bit 1. The single-blade tapered body 10 plays a precise guiding role in the drilling trajectory, reduces the sway of the drill bit 1 when rotating at high speed, and ensures the stability of the drilling direction. Drill shank 2 is fixedly connected to the outer wall of drill bit 1. Adapter 1 3 is fixedly connected to the outer wall of drill shank 2. Connecting block 1 4 is fixedly connected to the outer wall of adapter 1 3. Threaded sleeve 5 is threadedly connected to the inner wall of connecting block 1 4. Adapter 2 6 is threadedly connected to the inner wall of threaded sleeve 5. Threaded sleeve 5 achieves a detachable connection between adapter 2 6 and adapter 1 3 through threaded engagement with connecting block 1 4. It is the first component to be unlocked when replacing drill bit 1. Adapter 2 6 is equipped with a quick-release assembly inside. The quick-release assembly includes a connecting block 3 16 and a limiting block 15. The connecting block 3 16 is located inside the adapter 2 6. The outer wall of the limiting block 15 is fixedly connected to the outer wall of the connecting block 3 16. The limiting block 15 is located on the inner wall of the adapter 1 3. The limiting blocks 15 are symmetrically arranged on the connecting block 3 16 and can be inserted into the limiting groove of the adapter 1 3 to achieve limiting and fixing of the adapter 1 3 and the adapter 2 6, preventing them from rotating relative to each other or separating during drilling. The inner wall of the adapter 1 3 is slidably connected to the connecting block 2 14. The outer wall of the connecting block 2 14 is fixedly connected to the telescopic rod 12. The outer wall of the telescopic rod 12 is fitted with a spring 13. The telescopic rod 12 and the spring 13 cooperate and are installed on the connecting block 2 14. When the limiting block 15 slides, it provides telescopic support and assists the spring 13 to achieve elastic reset, ensuring the smooth sliding of the limiting block 15. One end of the spring 13 is fixedly connected to the inner wall of the adapter 1 3, and the other end of the spring 13 is fixedly connected to the outer wall of the connecting block 2 14. When the adapter 2 6 is pressed, the spring 13 is squeezed and stores elastic potential energy. After being released, it provides a reset force. The adapter 1 3 is provided with a limiting groove for the limiting block 15 to be inserted. It also accommodates the connecting block 2 14, the spring 13 and the telescopic rod 12. It provides sliding space and elastic reset base when changing the drill bit 1. The connecting block 3 16 is located on the other side of the outer wall of the connecting block 2 14 and on the inner wall of the adapter 1 3.

[0028] Specifically, the outer wall of drill bit 1 integrates a main cutting edge 7, an auxiliary cutting edge 8, a spiral feed groove 9, and a single-edged body 10. The main cutting edge 7 undertakes the main cutting task, the auxiliary cutting edge 8 assists in cutting to reduce resistance and enhance stability, and the single-edged body 10 provides precise guidance to avoid swaying, together ensuring accurate and stable drilling. Drill bit 1 and drill shank 2 made of rigid material are integrally formed. Drill shank 2 is connected to adapter 1 3. The connecting block 1 4 of adapter 1 3 is connected to the threaded sleeve 5 of adapter 2 6 through threads to achieve initial fixation of the two. The quick-release component inside adapter 2 6 includes connecting block 3 16 and upper and lower symmetrical limiting blocks 15. The limiting blocks 15 can be inserted into the limiting groove of adapter 1 3 to enhance connection stability. One side of connecting block 2 14 inside adapter 1 3 is connected to the telescopic rod 12 and spring 13, and the other side of connecting block 2 14 is connected to connecting block 3 16, providing an elastic sliding basis for quick release.

[0029] Reference Figures 2-5 There are two limiting blocks 15, which are symmetrically arranged vertically. The conversion connector 2 6 and the connecting block 3 16 are integrally formed with the limiting block 15. The conversion connector 1 3 and the connecting block 1 4 are integrally formed. The connecting block 1 4 and the threaded sleeve 5 on the conversion connector 2 6 are connected by threads to achieve the initial fixation of the conversion connector 1 3 and the conversion connector 2 6, ensuring the connection stability during drilling. The drill bit 1 and the drill shank 2 are made of rigid material and are integrally formed. The spiral feed groove 9 is used to discharge wood chips during drilling to avoid chip accumulation affecting cutting and ensure smooth drilling. The conversion connector 2 6 has a rectangular slot 11 inside, which is used to connect with the electric drill to realize the transmission of electric drill power and adapt to electric drills of different specifications.

[0030] Specifically, there are two limit blocks 15, which are symmetrically arranged. The conversion connector 2 6 and the connecting block 3 16 are integrally formed with the limit block 15. The conversion connector 1 3 and the connecting block 1 4 are integrally formed. The drill bit 1 and the drill shank 2 are also integrally formed, which improves the overall structural rigidity and connection stability. The spiral feed groove 9 can discharge wood chips in time to avoid accumulation and affect the smoothness of cutting. The rectangular slot 11 in the conversion connector 2 6 is used to connect the electric drill. It can transmit power and adapt to electric drills of different specifications. The integrated design enhances the structural reliability. With the help of the chip removal groove and the universal slot, the drilling efficiency and equipment compatibility are further guaranteed.

[0031] Working principle: When drilling is required using a single-edged tapered drill, connect the rectangular slot 11 on the adapter 2 6 to the electric drill, and then place the drill bit 1 against the wood surface. During the drilling process, the main cutting edge 7, the auxiliary cutting edge 8, the single-edged body 10, and the spiral feed groove 9 for chip removal on the outside of the drill bit 1 cooperate with each other to enhance the stability of the drill bit 1 during high-speed cutting and ensure a smooth drilling process. To replace drill bit 1, first rotate the threaded sleeve 5 on adapter 2 6 to disengage the threaded sleeve 5 from the connecting block 1 4 on adapter 1 3. Then press adapter 2 6 to move connecting block 3 16 and the upper and lower symmetrical limit blocks 15 to slide inside adapter 1 3. During this process, connecting block 2 14 will squeeze spring 13 and telescopic rod 12. After the limit block 15 slides out of the limit groove inside adapter 1 3, rotate adapter 2 6 and then remove the old drill bit 1 through the sliding cooperation between drill shank 2 and adapter 1 3 to complete the replacement.

Claims

1. A single-edged tapered drill, comprising a drill bit (1), characterized in that: The outer wall of the drill bit (1) is provided with a main cutting edge (7), an auxiliary cutting edge (8), a spiral feed groove (9) and a single-edged belt body (10) in sequence. The outer wall of the drill bit (1) is fixedly connected to a drill shank (2). The outer wall of the drill shank (2) is fixedly connected to a conversion joint one (3). The outer wall of the conversion joint one (3) is fixedly connected to a connecting block one (4). The inner wall of the connecting block one (4) is threadedly connected to a threaded sleeve (5). The inner wall of the threaded sleeve (5) is threadedly connected to a conversion joint two (6). The conversion joint two (6) is provided with a quick-release assembly inside. The quick-release assembly includes a connecting block three (16) and a limiting block (15). The connecting block three (16) is located inside the conversion joint two (6). The outer wall of the limiting block (15) is fixedly connected to the outer wall of the connecting block three (16). The limiting block (15) is located on the inner wall of the conversion joint one (3). The inner wall of the conversion joint one (3) is slidably connected to the connecting block two (14). A telescopic rod (12) is fixedly connected to one side of the outer wall of the connecting block two (14). A spring (13) is sleeved on the outer wall of the telescopic rod (12). One end of the spring (13) is fixedly connected to the inner wall of the conversion joint one (3), and the other end of the spring (13) is fixedly connected to one side of the outer wall of the connecting block two (14).

2. The single-edged tapered drill according to claim 1, characterized in that: The third connecting block (16) is located on the other side of the outer wall of the second connecting block (14), and the third connecting block (16) is located on the inner wall of the first conversion connector (3).

3. The single-edged tapered drill according to claim 1, characterized in that: There are two limiting blocks (15), which are arranged symmetrically along the top and bottom.

4. The single-edged tapered drill according to claim 1, characterized in that: The conversion connector 2 (6), the connecting block 3 (16), and the limiting block (15) are integrally formed.

5. The single-edged tapered drill according to claim 1, characterized in that: The adapter (3) and the connecting block (4) are integrally formed.

6. The single-edged tapered drill according to claim 1, characterized in that: The drill bit (1) and the drill shank (2) are made of rigid material and are integrally formed.

7. The single-edged tapered drill according to claim 1, characterized in that: The spiral feed chute (9) is used to discharge wood chips during the drilling process.

8. The single-edged tapered drill according to claim 1, characterized in that: The adapter 2 (6) has a rectangular slot (11) inside, which is used to connect with the electric drill to realize the transmission of the electric drill power.

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