Alloy drill bit convenient to clean

Abstract

The utility model relates to the technical field of alloy drill bit bodies, in particular to an alloy drill bit convenient to clean, which comprises a drill rod, a drill bit body arranged at one end of the drill rod, a blade mounted at the bottom of the drill bit body, a first connecting block mounted at one end of the drill bit body close to the drill rod, and a second connecting block mounted at one end of the drill rod close to the drill bit body. The second connecting block makes contact with the side face of the first connecting block, a positioning groove is formed in the side, close to the second connecting block, of the first connecting block, a positioning block is installed on the side face of the second connecting block, one end of the positioning block extends into the positioning groove, a mounting hole is formed in one end of the first connecting block, and a fastening bolt is arranged in the mounting hole. According to the drill bit, chippings wound on the drill bit body during drilling of the drill bit body can be cut off through the cutting-off blade, and the chippings can be flushed to the surface of a workpiece when the drill bit body is cooled through cooling liquid discharged from the liquid discharging opening, so that the chippings are prevented from being wound on the drill bit body, and the using effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of alloy drills, in particular to an alloy drill convenient for cleaning. Background Art

[0002] An alloy drill generally refers to a cemented carbide drill, which is mainly made of metal powders such as tungsten carbide and cobalt through high-temperature sintering, and has high hardness, generally above HRC90 degrees.

[0003] The existing alloy drills generally consist of a drill rod and a drill bit. During use, the surface of the workpiece is drilled by the cutting edge on the drill bit. However, during the drilling process, some metal chips will be in strips and wrap around the drill bit, making it inconvenient to clean. Moreover, generally, the drill bit and the drill rod are integrally arranged, resulting in the need to replace the drill rod together when the drill bit is damaged, and the use effect is poor. Therefore, we propose an alloy drill convenient for cleaning. Content of the Utility Model

[0004] The purpose of the utility model is to solve the above-mentioned disadvantages in the prior art, and to propose an alloy drill convenient for cleaning.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: design an alloy drill convenient for cleaning, including a drill rod, one end of the drill rod is provided with a drill bit body, a cutting edge is installed at the bottom of the drill bit body, a first connection block is installed at one end of the drill bit body close to the drill rod, and a second connection block is installed at one end of the drill rod close to the drill bit body. The second connection block is in contact with the side surface of the first connection block;

[0006] A positioning groove is opened on one side of the first connection block close to the second connection block, a positioning block is installed on the side surface of the second connection block, and one end of the positioning block extends into the positioning groove;

[0007] An installation hole is opened at one end of the first connection block, a fastening bolt is arranged inside the installation hole, a threaded hole is opened on the side surface of the second connection block, one end of the threaded hole penetrates through the positioning block and is communicated with the installation hole, and one end of the fastening bolt extends into the threaded hole and is in threaded cooperation with the threaded hole;

[0008] An infusion channel is opened inside the drill rod, the top of the infusion channel is communicated with a rotary joint fixed on the top of the drill rod. When the drill rod is fixed on the drilling machine, the rotary joint is connected with the coolant infusion pipe on the drilling machine. An annular pipeline is opened at the bottom end inside the drill rod, one side of the top of the annular pipeline is connected with the end of the infusion channel, a plurality of liquid discharge ports are opened at the bottom edge of the drill rod, the top of the liquid discharge port is connected with the annular pipeline, and the bottom of the liquid discharge port faces the drill bit body;

[0009] A plurality of cutting blades are installed on the side surface of the drill rod, and the bottom end of the cutting blade is communicated with the end of the cutting edge.

[0010] Preferably, the side surface of the positioning block is in clearance fit with the inner surface of the positioning groove.

[0011] Preferably, a receiving groove is formed on the side surface of the first connecting block. The receiving groove is coaxially arranged with the mounting hole, and one end of the receiving groove is communicated with the mounting hole. When the fastening bolt is tightened, one end of the fastening bolt is located in the receiving groove.

[0012] Preferably, when the fastening bolt is tightened, one end of the fastening bolt is located in the threaded hole.

[0013] Preferably, a slag discharge groove is formed on the side surface of the drill pipe, and the slag discharge groove is arranged in a spiral shape.

[0014] Preferably, at least one reinforcing rib is installed on both sides inside the slag discharge groove.

[0015] Preferably, the cutting blade is arranged in a spiral shape, and the cross section of the cutting blade is a triangular structure.

[0016] Preferably, wear-resistant coatings are provided on the drill bit body, the cutting blade and the outer surface of the blade.

[0017] The beneficial effects of the design scheme proposed by the present utility model in the application process are as follows:

[0018] 1. The first connecting block and the second connecting block can be fixed together through the fastening bolt, and then the drill pipe and the drill bit body are connected together. When the drill bit body needs to be replaced, only the drill bit body needs to be disassembled from the drill pipe for replacement, and there is no need to replace the drill pipe synchronously, which improves the use effect.

[0019] 2. The cutting blade can cut off the debris wound around the drill bit body during drilling of the drill bit body, and the coolant discharged through the liquid discharge port can also wash the debris towards the surface of the workpiece while cooling the drill bit body, avoiding the debris from winding around the drill bit body and improving the use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural view of the present utility model Figure 1 ;

[0021] Figure 2 is a partial schematic structural view of the drill bit body of the present utility model;

[0022] Figure 3 is a schematic structural view of the present utility model Figure 2 ;

[0023] Figure 4 is a side sectional view of the structure of the present utility model;

[0024] Figure 5 is a top sectional view of the structure of the first connecting block and the second connecting block of the present utility model.

[0025] In the figure: 1. Cutting blade; 2. Fastening bolt; 3. Accommodating groove; 4. Drill pipe; 5. Rotating joint; 6. Mounting hole; 7. First connecting block; 8. Chip removal groove; 9. Reinforcing rib; 10. Drain port; 11. Blade; 12. Liquid infusion channel; 13. Annular pipe; 14. Second connecting block; 15. Drill bit body; 16. Positioning groove; 17. Positioning block; 18. Threaded hole. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0027] Refer to Figures 1 - 5 , an alloy drill bit convenient for cleaning, including a drill pipe 4. One end of the drill pipe 4 is provided with a drill bit body 15. A blade 11 is installed at the bottom of the drill bit body 15. During actual use, when the drill bit body 15 rotates relative to the workpiece, the blade 11 will cut the workpiece, thereby completing the drilling process of the workpiece.

[0028] It should be noted that, as Figure 1 and Figure 2 shown, a chip removal groove 8 is provided on the side of the drill pipe 4, and the chip removal groove 8 is arranged in a spiral shape. Under the action of the chip removal groove 8, the chips generated by drilling the drill bit body 15 on the surface of the workpiece can be discharged.

[0029] As Figure 3 and Figure 5 shown, a first connecting block 7 is installed at one end of the drill bit body 15 close to the drill pipe 4, and a second connecting block 14 is installed at one end of the drill pipe 4 close to the drill bit body 15. The second connecting block 14 is in contact with the side surface of the first connecting block 7. A positioning groove 16 is provided on the side of the first connecting block 7 close to the second connecting block 14. A positioning block 17 is installed on the side surface of the second connecting block 14, and one end of the positioning block 17 extends into the positioning groove 16. During actual use, through the cooperation of the first connecting block 7 and the second connecting block 14, the drill pipe 4 and the drill bit body 15 can be connected together, and through the cooperation of the positioning groove 16 and the positioning block 17, the contact area between the first connecting block 7 and the second connecting block 14 can be increased, improving the connection stability.

[0030] It should be noted that the side surface of the positioning block 17 is in clearance fit with the inner surface of the positioning groove 16, so that during installation, the drill pipe 4 will not shake relative to the drill bit body 15.

[0031] As Figure 1 and Figure 5As shown, one end of the first connecting block 7 is provided with a mounting hole 6. Inside the mounting hole 6, there is a fastening bolt 2. A threaded hole 18 is provided on the side of the second connecting block 14. One end of the threaded hole 18 penetrates through the positioning block 17 and communicates with the mounting hole 6. One end of the fastening bolt 2 extends into the threaded hole 18 and is in threaded fit with the threaded hole 18. During actual use, by passing the fastening bolt 2 through the mounting hole 6 and screwing it into the threaded hole 18, the first connecting block 7 and the second connecting block 14 can be fixed together firmly.

[0032] As Figure 1 , Figure 3 and Figure 4 shown, an infusion channel 12 is provided inside the drill pipe 4. The top of the infusion channel 12 communicates with a rotary joint 5 fixed at the top of the drill pipe 4. An annular pipe 13 is provided at the bottom end inside the drill pipe 4. One side of the top of the annular pipe 13 is connected to the end of the infusion channel 12. A number of drain ports 10 are provided at the bottom edge of the drill pipe 4. The top of the drain port 10 is connected to the annular pipe 13, and the bottom of the drain port 10 faces the drill bit body 15. During actual use, when the drill pipe 4 is installed on the drilling machine, the rotary joint 4 at the top of the drill pipe 4 will be connected to the end of the cooling pipe on the drilling machine. In this way, during processing, the coolant can be transported into the infusion channel 12 through the cooling pipe on the drilling machine and finally sprayed out through the drain ports 10 to cool the drill bit body 15. And during cooling, the chips generated by drilling can also be blown towards the workpiece surface so that the chips will not wind around the drill bit body 15.

[0033] As Figure 2 and Figure 3 shown, a number of cutting blades 1 are installed on the side of the drill pipe 4. The bottom end of the cutting blade 1 communicates with the end of the blade 11. In this way, the cutting blade 1 will not collide with the inner wall of the hole drilled by the drill bit body 15 in the workpiece. And during use, when the chips generated by drilling wind around the drill bit body 15, they will be cut off by the cutting blade 1.

[0034] It should be noted that, as Figure 4 shown, the cutting blade 1 is arranged in a spiral shape, and the cross-section of the cutting blade 1 is a triangular structure. In this way, the strength of the cutting blade 1 can be increased to avoid damage to the cutting blade 1.

[0035] It should be noted that wear-resistant coatings are provided on the outer surfaces of the drill bit body 15, the cutting blade 1 and the blade 11. In this way, the wear resistance of the drill bit body 15, the cutting blade 1 and the blade 11 can be increased to avoid rapid wear of the drill bit body 15, the cutting blade 1 and the blade 11 during use.

[0036] Specifically, when the utility model is in use, the staff moves the first connecting block 7 on the drill bit body 15 to the side of the second connecting block 14 on the drill pipe 4, so that the positioning block 17 on the side of the second connecting block 14 is inserted into the positioning groove 16 on the first connecting block 7. Then, the fastening bolt 2 is passed through the mounting hole 6 and screwed into the threaded hole 18 to fix the drill bit body 15 and the drill pipe 4 together. Then, the drill pipe 4 is fixed on the drilling machine, and at the same time, the rotating joint 5 is connected to the coolant infusion pipe on the drill. When drilling the workpiece, the debris generated by the drilling of the drill bit body 15 will be discharged to the top of the workpiece along the slag discharge groove 8. At the same time, the coolant is transported through the infusion pipe into the infusion channel 12, and then through the infusion channel 12 into the annular pipe 13. Finally, the coolant is sprayed onto the surface of the workpiece through the liquid discharge port 10, which can cool the drill bit body 15 and at the same time spray the debris onto the surface of the workpiece, so that the debris will not be wound around the drill bit body 15.

[0037] Furthermore, as Figure 1 and Figure 5 shown, a receiving groove 3 is provided on the side of the first connecting block 7. The receiving groove 3 is coaxially arranged with the mounting hole 6, and one end of the receiving groove 3 is connected to the mounting hole 6. When the fastening bolt 2 is tightened, one end of the fastening bolt 2 is located in the receiving groove 3, and when the fastening bolt 2 is tightened, one end of the fastening bolt 2 is located in the threaded hole 18. In actual use, one end of the fastening bolt 2 after tightening will be located in the receiving groove 3, and the other end will be located in the threaded hole 18. In this way, during use, the fastening bolt 2 will not interfere with the drilling.

[0038] Furthermore, as Figure 2 shown, at least one reinforcing rib 9 is installed on both sides inside the slag discharge groove 8. The structural strength of the drill bit body 15 can be increased through the reinforcing rib 9, and the use effect can be improved.

[0039] The above is only the preferred specific implementation manner of the utility model, but the protection scope of the utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the utility model, according to the technical solution of the utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the utility model.

Claims

1. An alloy drill bit that is easy to clean, comprising a drill rod (4), characterized in that: A drill bit body (15) is provided at one end of the drill rod (4), a blade (11) is installed at the bottom of the drill bit body (15), a first connecting block (7) is installed at one end of the drill bit body (15) close to the drill rod (4), and a second connecting block (14) is installed at one end of the drill rod (4) close to the drill bit body (15), and the second connecting block (14) is in contact with the side surface of the first connecting block (7); A positioning groove (16) is provided on one side of the first connecting block (7) close to the second connecting block (14); a positioning block (17) is installed on the side of the second connecting block (14); one end of the positioning block (17) extends into the positioning groove (16); A mounting hole (6) is provided at one end of the first connecting block (7), a fastening bolt (2) is provided inside the mounting hole (6), a threaded hole (18) is provided on the side of the second connecting block (14), one end of the threaded hole (18) passes through the positioning block (17) and is connected to the mounting hole (6), and one end of the fastening bolt (2) extends into the threaded hole (18) and is threadably matched with the threaded hole (18); A fluid infusion channel (12) is provided inside the drill rod (4), and the top of the fluid infusion channel (12) is connected to a rotating joint (5) fixed on the top of the drill rod (4). When the drill rod (4) is fixed on a drilling rig, the rotating joint (5) is connected to a coolant infusion pipe on the drilling rig. An annular pipe (13) is provided at the bottom end of the drill rod (4), and one side of the top of the annular pipe (13) is connected to the end of the fluid infusion channel (12). A plurality of fluid discharge ports (10) are provided at the bottom edge of the drill rod (4), and the top of the fluid discharge port (10) is connected to the annular pipe (13), and the bottom of the fluid discharge port (10) faces the drill bit body (15). A plurality of cutting blades (1) are installed on the side of the drill rod (4), and the bottom end of the cutting blade (1) is connected to the end of the blade (11).

2. The alloy drill bit that is easy to clean according to claim 1, characterized in that: The side surface of the positioning block (17) is clearance-matched with the inner surface of the positioning groove (16).

3. The alloy drill bit that is easy to clean according to claim 1, characterized in that: A receiving groove (3) is provided on the side of the first connecting block (7); the receiving groove (3) is coaxially arranged with the mounting hole (6), and one end of the receiving groove (3) is connected to the mounting hole (6); when the fastening bolt (2) is tightened, one end of the fastening bolt (2) is located in the receiving groove (3).

4. The alloy drill bit that is easy to clean according to claim 3, characterized in that: When the fastening bolt (2) is tightened, one end of the fastening bolt (2) is located in the threaded hole (18).

5. The alloy drill bit that is easy to clean according to claim 1, characterized in that: A slag discharge groove (8) is provided on the side of the drill rod (4), and the slag discharge groove (8) is arranged in a spiral shape.

6. The alloy drill bit that is easy to clean according to claim 5, characterized in that: At least one reinforcing rib (9) is installed on both sides of the interior of the slag discharge trough (8).

7. The alloy drill bit that is easy to clean according to claim 1, characterized in that: The cutting blade (1) is arranged in a spiral shape, and the cross section of the cutting blade (1) is a triangular structure.

8. The alloy drill bit that is easy to clean according to claim 1, characterized in that: The outer surfaces of the drill body (15), the cutting blade (1) and the blade (11) are all provided with a wear-resistant coating.

Images