Alloy coating drill convenient to disassemble and assemble

Abstract

The utility model discloses an alloy coating drill convenient to disassemble and assemble. The alloy coating drill comprises a drill bit, a drill handle and a disassembling and assembling assembly. The utility model has the beneficial effects that on one hand, the drill handle and the drill bit can be quickly separated and connected, and the drill handle or the drill bit can be specifically replaced when being damaged, so that the time for replacing the drill bit or the drill handle is greatly saved, the overall working efficiency is improved, and meanwhile, the use cost is reduced; on one hand, a proper drill bit can be rapidly replaced according to different machining requirements, so that the tool is more flexibly suitable for various machining tasks, the universality of the tool is improved, meanwhile, firm and stable connection between the drill handle and the drill bit can be ensured through the threaded knob, loosening or deviation cannot occur in the drilling process, and the drilling precision and quality are ensured.

Description

Technical Field

[0001] This utility model relates to a drill bit, specifically an alloy-coated drill bit that is easy to assemble and disassemble, belonging to the field of milling cutter technology. Background Technology

[0002] Cemented carbide is an alloy material with a series of excellent properties, including high hardness, wear resistance, good strength and toughness, heat resistance, and corrosion resistance. In particular, its high hardness and wear resistance remain essentially unchanged even at 500℃, and it still has high hardness at 1000℃. Cemented carbide is widely used as a cutting tool material, such as turning tools, milling cutters, planing tools, drills, boring tools, etc., for cutting cast iron, non-ferrous metals, plastics, chemical fibers, graphite, glass, stone, and ordinary steel. It can also be used to cut difficult-to-machine materials such as heat-resistant steel, stainless steel, high-manganese steel, and tool steel. In the field of modern machining, carbide drills are an indispensable tool. With the continuous development of industry, the requirements for processing efficiency and quality are increasing day by day.

[0003] In existing technologies, such as the integral alloy coated drilling and milling composite cutter disclosed in CN215033892U, the tip is provided with a drilling section and the middle with a milling section, which are responsible for drilling and milling the inner wall of the hole, respectively. In addition, the tapered transition section connecting the drilling section and the milling section is provided with a transition circumferential cutting edge, which can further enlarge the hole and smoothly transition the drilling and milling processes. The front and rear ends of the milling section are provided with cutting edges. For milling work with high precision requirements, the milling section can mill and scrape the surface back and forth to ensure the surface roughness of the inner wall of the hole. There is no interruption in the back and forth milling, so there are no tool joint marks. The milled hole wall is smooth, with high precision and high milling efficiency. In existing technologies, the drill shank and drill bit are fixed. When the drill bit or drill shank is damaged, it is not possible to replace them specifically. It is often necessary to replace the whole thing, which increases the cost of use. Utility Model Content

[0004] The purpose of this invention is to provide an alloy-coated drill that is easy to assemble and disassemble in order to solve at least one of the above-mentioned technical problems.

[0005] The present invention achieves the above objectives through the following technical solution: an alloy-coated drill that is easy to assemble and disassemble, comprising a drill bit and a drill shank sleeved on the surface of the drill bit, wherein the drill bit and the drill shank are detachably connected.

[0006] A disassembly assembly is fixedly installed between the drill shank and the drill bit. The disassembly assembly includes an external threaded mating ring 1 fixedly connected to the bottom end of the drill shank, a connecting rod fixedly connected to the top end of the drill bit, and a threaded knob and an external threaded mating ring 2 for connecting the drill bit and the drill shank.

[0007] As a further improvement of this utility model: both the drill bit and the drill shank are made of alloy material, and both the drill bit and the drill shank have an anti-rust coating on their surfaces.

[0008] As a further embodiment of this utility model: the threaded knob is threaded onto the surface of the external threaded mating ring one, and the threaded knob and the external threaded mating ring two are threadedly connected.

[0009] As a further embodiment of this utility model: a first positioning ring is fixedly sleeved between the drill shank and the external threaded mating ring, a second positioning ring is fixedly sleeved on the surface of the connecting rod, and positioning rods with connecting threads at the ends are symmetrically fixedly connected to the surface of the second positioning ring. A nut is threadedly sleeved on the surface of each positioning rod, and through holes for the positioning rods to pass through are symmetrically opened on the surface of the first positioning ring.

[0010] As a further improvement of this utility model, a spiral chip removal groove is provided on the surface of the drill bit.

[0011] As a further improvement of this utility model, both the drill shank and the drill bit have internal cooling holes, and the two internal cooling holes are interconnected.

[0012] As a further improvement of this utility model, the bottom end of the drill bit is fixedly connected to a centering device.

[0013] The beneficial effects of this utility model are:

[0014] 1. This utility model is equipped with a spiral chip removal groove, which provides a smooth discharge channel for chips, allowing chips to quickly leave the drilling area and avoid chip accumulation affecting the drilling progress. It can effectively prevent chips from accumulating and clogging around the drill bit, ensuring the continuity and stability of drilling, improving drilling efficiency, and the smooth discharge of chips reduces the friction between chips and the drill bit surface, reducing the resistance of the drill bit during the drilling process, making the drilling process easier and reducing wear on the drill bit.

[0015] 2. This utility model is equipped with a centering device, which can quickly and accurately determine the drilling position before drilling begins, ensuring that the drill bit drills in the correct direction in the initial stage. This greatly improves the positional accuracy of the drilling and can effectively prevent the drill bit from deviating during the drilling process, resulting in better straightness of the drill hole. This ensures the dimensional and shape accuracy of the hole. At the same time, the centering device plays a stabilizing role when the drill bit first contacts the workpiece, allowing the drill bit to enter the workpiece smoothly and reducing damage to the drill bit and workpiece caused by vibration and shaking.

[0016] 3. This utility model is equipped with an internal cooling hole, which allows the coolant to directly reach the cutting area to quickly cool the drill bit and workpiece, effectively reducing the cutting temperature and preventing the drill bit from wearing out or being damaged due to high temperature. It can also continuously provide cooling during the drilling process, ensuring that the drill bit always works within a suitable temperature range and extending the service life of the drill bit. At the same time, when the coolant is sprayed out from the internal cooling hole, it can generate a certain pressure, which helps to expel the chips from the hole more quickly and prevents the accumulation of chips from affecting the drilling progress and quality.

[0017] 4. This utility model is equipped with a disassembly and assembly component. On the one hand, it can quickly separate and connect the drill shank and the drill bit, and can replace the drill shank or drill bit when it is damaged, which greatly saves the time of replacing the drill bit or drill shank, improves the overall work efficiency, and reduces the cost of use. On the other hand, it can quickly change the appropriate drill bit according to different processing needs, making the tool more flexible to adapt to various processing tasks and improving the versatility of the tool. At the same time, the threaded knob can ensure that the connection between the drill shank and the drill bit is firm and stable, and there will be no loosening or displacement during the drilling process, ensuring the accuracy and quality of drilling. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present utility model. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the overall structure of the present utility model. Figure 2 ;

[0020] Figure 3 This is a schematic diagram of the disassembled structure of the drill bit and drill shank of this utility model;

[0021] Figure 4 This is a schematic diagram of the connection structure of the drill bit in this utility model;

[0022] Figure 5 This is a schematic diagram of the spiral chip removal groove in this utility model;

[0023] Figure 6 This is a cross-sectional structural diagram of the drill bit in this utility model.

[0024] In the diagram: 1. Drill bit, 2. Drill shank, 3. Assembly / disassembly assembly, 31. First positioning ring, 32. Second positioning ring, 33. Positioning rod, 34. Nut, 35. Threaded knob, 36. External threaded mating ring one, 37. Connecting rod, 38. External threaded mating ring two, 39. Through hole, 4. Spiral chip removal groove, 5. Centering, 6. Internal cooling hole. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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

[0026] like Figures 1 to 6 As shown, an alloy-coated drill that is easy to assemble and disassemble includes a drill bit 1 and a drill shank 2 sleeved on the surface of the drill bit 1. The drill bit 1 and the drill shank 2 are detachably connected.

[0027] A disassembly assembly 3 is fixedly installed between the drill shank 2 and the drill bit 1. The disassembly assembly 3 includes an external threaded mating ring 36 fixedly connected to the bottom end of the drill shank 2, a connecting rod 37 fixedly connected to the top end of the drill bit 1, a threaded knob 35 and an external threaded mating ring 38 for connecting the drill bit 1 and the drill shank 2. It can quickly separate and connect the drill shank 2 and the drill bit 1, and can replace the drill shank 2 or the drill bit 1 in a targeted manner when the drill shank 2 or the drill bit 1 is damaged. This greatly saves the time of replacing the drill bit 1 or the drill shank 2, improves the overall work efficiency, and reduces the cost of use. Example 2

[0028] In addition to all the technical features included in Embodiment 1, this embodiment also includes:

[0029] Both drill bit 1 and drill shank 2 are made of alloy material, and both surfaces of drill bit 1 and drill shank 2 are coated with anti-rust coating.

[0030] The threaded knob 35 is threaded onto the surface of the external threaded mating ring 36. The threaded knob 35 and the external threaded mating ring 38 are threaded together. In use, the threaded knob 35 is turned to the connection position of the external threaded mating ring 36 and the external threaded mating ring 38. The threaded knob 35 connects the external threaded mating ring 36 and the external threaded mating ring 38 simultaneously, achieving double fixation, making the connection more secure and reliable. It is not easy to loosen or separate during use, and it can withstand greater external forces and torques, ensuring that the drill bit 1 remains stable during high-speed rotation and cutting, and improving the accuracy and quality of drilling.

[0031] A first positioning ring 31 is fixedly sleeved between the drill shank 2 and the external threaded mating ring 36. A second positioning ring 32 is fixedly sleeved on the surface of the connecting rod 37. A positioning rod 33 with a connecting thread at the end is symmetrically fixedly connected to the surface of the second positioning ring 32. A nut 34 is threadedly sleeved on the surface of each positioning rod 33. A through hole 39 is symmetrically opened on the surface of the first positioning ring 31 for the positioning rod 33 to pass through. This allows for quick positioning of the connection position between the drill bit 1 and the drill shank 2, improving assembly and disassembly efficiency. Example 3

[0032] In addition to all the technical features included in Embodiment 1, this embodiment also includes:

[0033] The surface of the drill bit 1 is provided with a spiral chip removal groove 4, which can provide a smooth discharge channel for the chips, allowing the chips to leave the drilling area quickly and avoiding chip accumulation that affects the drilling progress.

[0034] Both the drill shank 2 and the drill bit 1 have internal cooling holes 6 inside, and the two internal cooling holes 6 are interconnected, which allows the coolant to directly reach the cutting area to quickly cool the drill bit 1 and the workpiece, effectively reducing the cutting temperature and preventing the drill bit 1 from wearing out or being damaged due to high temperature.

[0035] The bottom end of the drill bit 1 is fixedly connected to a centering device 5, which can quickly and accurately determine the drilling position before drilling begins, ensuring that the drill bit 1 drills in the correct direction in the initial stage, greatly improving the positional accuracy of the drilling, effectively preventing the drill bit 1 from deviating during the drilling process, and making the straightness of the drilling better.

[0036] Working principle: When using this alloy-coated drill to process a workpiece, first connect the drill shank 2 to the machine tool connector, and connect the coolant hole of the machine tool with the internal cooling hole 6 opened on the surface of the drill shank 2. Then the machine tool can be started to process the workpiece.

[0037] Before processing, the centering 5 is used to position the workpiece to ensure that the drill bit 1 drills in the correct direction in the initial stage, which greatly improves the positional accuracy of drilling and can effectively prevent the drill bit 1 from deviating during drilling, making the straightness of the drilling better.

[0038] During the processing, the waste chips generated during drilling can be discharged through the spiral chip removal groove 4, which avoids chip accumulation affecting the drilling progress. It can effectively prevent chips from accumulating and clogging around the drill bit 1, ensuring the continuity and stability of drilling, improving drilling efficiency, and the smooth discharge of chips reduces the friction between the chips and the surface of the drill bit 1, reducing the resistance of the drill bit 1 during the drilling process, making the drilling process easier, and reducing the wear on the drill bit 1.

[0039] At the same time, the coolant flows out from the surface of the drill bit 1 through the internal cooling hole 6, which allows the coolant to directly reach the cutting area, quickly cool the drill bit 1 and the workpiece, effectively reduce the cutting temperature, prevent the drill bit 1 from wearing out or being damaged due to high temperature, and can continuously provide cooling during the drilling process, ensuring that the drill bit 1 always works within a suitable temperature range and extending the service life of the drill bit 1.

[0040] During use, when drill bit 1 is severely worn, stop the machine and remove the drill shank from the machine. Then, unscrew the nuts 34 on both sides and rotate the thread knob 35 so that the thread knob 35 moves out of the surface of the external thread mating ring 38. Then, the first positioning ring 31 can be moved out of the surface of the positioning rod 33, thereby realizing the disassembly between drill bit 1 and drill shank 2. When drill shank 2 or drill bit 1 is damaged, it can be replaced in a targeted manner, which greatly saves the time of replacing drill bit 1 or drill shank 2, improves the overall work efficiency, and reduces the cost of use.

[0041] Next, the new drill bit 1 is passed through the positioning rod 33 via the first positioning ring 31, so that the external thread mating ring 1 36 and the external thread mating ring 2 38 are in contact with each other. At this time, the nut 34 is tightened first to initially fix the drill bit 1 and the drill shank 3. Then, the thread knob 35 is turned to the connection position of the external thread mating ring 1 36 and the external thread mating ring 2 38. The thread knob 35 connects the external thread mating ring 1 36 and the external thread mating ring 2 38 at the same time, realizing double fixation, making the connection more firm and reliable, not easy to loosen or separate during use, and able to withstand greater external force and torque, ensuring that the drill bit 1 remains stable during high-speed rotation and cutting, and improving the accuracy and quality of drilling.

[0042] 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.

[0043] 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. An alloy-coated drill that is easy to assemble and disassemble, comprising a drill bit (1) and a drill shank (2) sleeved on the surface of the drill bit (1), wherein the drill bit (1) and the drill shank (2) are detachably connected; Its features are: A disassembly assembly (3) is fixedly provided between the drill shank (2) and the drill bit (1). The disassembly assembly (3) includes an external threaded mating ring one (36) fixedly connected to the bottom end of the drill shank (2), a connecting rod (37) fixedly connected to the top end of the drill bit (1), a threaded knob (35) for connecting the drill bit (1) and the drill shank (2), and an external threaded mating ring two (38).

2. The easily detachable alloy-coated drill bit according to claim 1, characterized in that: Both the drill bit (1) and the drill shank (2) are made of alloy material, and both the drill bit (1) and the drill shank (2) are provided with an anti-rust coating.

3. The easily detachable alloy-coated drill bit according to claim 1, characterized in that: The threaded knob (35) is threaded onto the surface of the external threaded mating ring one (36), and the threaded knob (35) and the external threaded mating ring two (38) are threaded together.

4. The easily detachable alloy-coated drill bit according to claim 1, characterized in that: A first positioning ring (31) is fixedly sleeved between the drill shank (2) and the external threaded mating ring (36). A second positioning ring (32) is fixedly sleeved on the surface of the connecting rod (37). A positioning rod (33) with a connecting thread at the end is symmetrically fixedly connected to the surface of the second positioning ring (32). A nut (34) is threadedly sleeved on the surface of each positioning rod (33). A through hole (39) for the positioning rod (33) to pass through is symmetrically opened on the surface of the first positioning ring (31).

5. The easily detachable alloy-coated drill bit according to claim 1, characterized in that: The surface of the drill bit (1) is provided with a spiral chip removal groove (4).

6. The easily detachable alloy-coated drill bit according to claim 1, characterized in that: Both the drill shank (2) and the drill bit (1) have internal cooling holes (6) inside, and the two internal cooling holes (6) are interconnected.

7. The easily detachable alloy-coated drill bit according to claim 1, characterized in that: The bottom end of the drill bit (1) is fixedly connected to a centering device (5).

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