Drill bit and drilling tool applying same

Abstract

The utility model discloses a drill bit and a drilling tool applying the drill bit, and particularly relates to the technical field of drill bits, the drill bit comprises a fixing part and a cutting part which are detachably fixed together up and down, a plurality of conical teeth are fixedly arranged at the bottom end of the cutting part, and a plurality of positioning blocks are fixedly arranged at the top end of the cutting part. A plurality of positioning grooves matched with the positioning blocks are formed in the bottom of the fixing part, the positioning blocks are inserted into the positioning grooves, an annular cavity communicated with the positioning grooves is formed in the fixing part, an annular plate is arranged in the annular cavity in a sliding mode, and the bottom end of the annular plate makes contact with the bottom ends of the positioning blocks. And a plurality of compression springs are fixedly arranged at the top of the annular plate. The drill bit is divided into the cutting part and the fixing part, the cutting part can be directly detached and replaced conveniently, the annular plate and the positioning blocks are pushed to move downwards through the elastic force of the compression spring, the cutting part can be rapidly separated from the fixing part, workers can detach and reinstall the cutting part conveniently, and only the cutting part needs to be inserted.

Description

Technical Field

[0001] The utility model relates to the technical field of drill bits, and more specifically to a drill bit and a drilling tool using the drill bit. Background Art

[0002] In drilling operations, drill bits and drilling tools are often used. A drill bit is a tool used to drill through holes or blind holes in solid materials and can also ream existing holes. A drilling tool is a tool used in conjunction with a drill bit. Commonly used drill bits mainly include twist drills, flat drills, center drills, deep hole drills, and trepanning drills, etc. The drill bit is generally installed at the end of the drilling tool and is used for crushing the drilling work. For example, the drill bit and drilling tool disclosed in the prior art with the publication number CN211692323U. In this utility model, the drill bit is connected to the drill pipe of the drilling tool, and the driving mechanism drives the drill bit to rotate through the drill pipe. The drill bit rotates at the drilling position to complete the drilling work.

[0003] Most high-strength drill bits are usually integrally formed. Therefore, when the drill bit is worn, the entire drill bit needs to be replaced, resulting in a significant increase in the use cost. Moreover, the drill bit and the drilling tool are usually fixed by multiple bolts. During drilling operations, there will be debris on the surfaces of the drill bit and the drilling tool, and these debris will adhere and generate stickiness. Therefore, the operator needs to use a lot of force to pull out the drill bit from the drilling tool, which is time-consuming and laborious. Based on this, the utility model provides a drill bit and a drilling tool using the drill bit. Summary of the Utility Model

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a drill bit and a drilling tool using the drill bit. By dividing the drill bit into a cutting part and a fixing part, it is convenient to directly disassemble and replace the cutting part. And by using the elastic force of the compression spring to push the ring plate and multiple positioning blocks downward, the cutting part can be quickly separated from the fixing part, which is convenient for the operator to disassemble. To reinstall the cutting part, only need to insert the cutting part. This solves the problems that occur in the above background art.

[0005] To achieve the above object, the utility model provides the following technical solution: A drill bit includes a fixing part and a cutting part that are detachably fixed together up and down. A plurality of conical teeth are fixedly provided at the bottom end of the cutting part, and a plurality of positioning blocks are fixedly provided at the top end of the cutting part. A plurality of positioning grooves adapted to the positioning blocks are opened at the bottom of the fixing part, and the positioning blocks are inserted into the positioning grooves. An annular cavity communicating with the plurality of positioning grooves is provided inside the fixing part. A ring plate is slidably provided inside the annular cavity. The bottom end of the ring plate contacts the bottom ends of the plurality of positioning blocks. A plurality of compression springs are fixedly provided at the top of the ring plate, and the bottom end of each compression spring is connected to the inner wall of the top of the annular cavity. Receiving grooves are opened on the outer walls of both sides of the fixing part, and spring pins are fixedly penetrated through the two receiving grooves. Slots are opened on the outer walls of both sides of the ring plate, and one end of the spring pin is inserted into the slot.

[0006] In a preferred embodiment, dust covers are inserted into both of the receiving grooves. The dust covers are arranged outside the spring bolts. The dust covers can not only play a role in dust prevention, but also protect the spring bolts.

[0007] In a preferred embodiment, a plurality of limiting blocks are fixedly arranged at the top of the outer wall of the fixing part. The plurality of limiting blocks are annularly and arrayedly distributed on the outer wall of the fixing part to improve the firmness of the installation of the fixing part.

[0008] The utility model further includes a drill tool using a drill bit, which comprises a drill tool body. An installation groove is formed at the bottom end of the drill tool body. The fixing part is inserted into the installation groove, and the fixing part and the drill tool body are fixed together by a plurality of bolts, which is convenient for the staff to install and disassemble the fixing part.

[0009] In a preferred embodiment, a rubber sealing ring is arranged between the fixing part and the installation groove. The rubber sealing ring is sleeved on the outer wall of the fixing part. The rubber sealing ring can not only improve the sealing performance, but also increase the firmness between the fixing part and the installation groove.

[0010] In a preferred embodiment, an annular diversion plate is arranged at the top of the fixing part. The annular diversion plate is fixedly sleeved on the outer wall of the fixing part. The debris is guided by the annular diversion plate to flow away quickly, so as to reduce the amount of debris between the fixing part and the installation groove.

[0011] In a preferred embodiment, a plurality of limiting grooves adapted to the limiting blocks are formed in the inner wall of the installation groove. The plurality of limiting blocks are respectively arranged in the plurality of limiting grooves. The cooperation of the limiting blocks and the limiting grooves can improve the firmness between the fixing part and the drill tool body.

[0012] The technical effects and advantages of the utility model:

[0013] 1. By dividing the drill bit into a cutting part and a fixing part, the utility model is convenient for directly disassembling and replacing the cutting part. And by using the elastic force of the compression spring to push the ring plate and a plurality of positioning blocks to move downward, the cutting part can be quickly separated from the fixing part, which is convenient for the staff to disassemble and reinstall the cutting part. The staff only needs to insert the cutting part.

[0014] 2. The annular diversion plate can guide the debris generated by drilling out, avoiding a large amount of debris from entering between the fixing part and the installation groove due to the drill tool body blocking the debris. Furthermore, the connection firmness between the fixing part and the drill tool body can be improved. And the cooperation of the limiting blocks and the limiting grooves can improve the firmness between the fixing part and the drill tool body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 Structural diagram of the cutting part and the fixing part of the present utility model;

[0017] Figure 3 Cross-sectional view of the fixing part and the cutting part of the present utility model;

[0018] Figure 4 is Figure 3 enlarged view of part A in

[0019] Figure 5 Cross-sectional view of the drill body of the present utility model.

[0020] Reference numerals are: 1, fixing part; 2, cutting part; 3, conical teeth; 4, positioning block; 5, positioning groove; 6, annular cavity; 7, ring plate; 8, compression spring; 9, receiving groove; 10, spring pin; 11, slot; 12, dust cover; 13, limiting block; 14, drill body; 15, installation groove; 16, rubber sealing ring; 17, annular guide plate; 18, limiting groove. Specific implementation manner

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Referring to the attached Figures 1 - 5 description, the present utility model provides a drill bit, which includes a fixing part 1 and a cutting part 2 that are detachably fixed together up and down. A plurality of conical teeth 3 are fixedly provided at the bottom end of the cutting part 2, and a plurality of positioning blocks 4 are fixedly provided at the top end of the cutting part 2. A plurality of positioning grooves 5 adapted to the positioning blocks 4 are opened at the bottom of the fixing part 1. The positioning blocks 4 are inserted into the positioning grooves 5. An annular cavity 6 communicating with the plurality of positioning grooves 5 is provided inside the fixing part 1;

[0023] Then, a ring plate 7 is slidably provided inside the annular cavity 6. The bottom end of the ring plate 7 contacts the bottom ends of the plurality of positioning blocks 4. A plurality of compression springs 8 are fixedly provided at the top of the ring plate 7. The bottom end of each compression spring 8 is connected to the inner wall of the top of the annular cavity 6. Receiving grooves 9 are opened on both outer walls of the fixing part 1. Spring pins 10 are fixedly penetrated through both receiving grooves 9. Slots 11 are opened on both outer walls of the ring plate 7. One end of the spring pin 10 is inserted into the slot 11;

[0024] In order to prevent debris from clogging the storage groove 9, dust covers 12 are inserted into the two storage grooves 9. The dust covers 12 are arranged on the outside of the spring latch 10. The dust covers 12 can not only play a dust-proof role, but also protect the spring latch 10. A plurality of limit blocks 13 are fixedly provided on the top of the outer wall of the fixing part 1, and the plurality of limit blocks 13 are distributed in a circular array on the outer wall of the fixing part 1.

[0025] When in use, the drill bit is divided into a cutting part 2 and a fixing part 1, and the fixing part 1 drives the cutting part 2 to rotate, and the multiple conical teeth 3 on the top of the cutting part 2 are rotated and crushed to perform drilling. When the conical teeth 3 are found to be damaged and need to be replaced, the staff first loosens the multiple bolts between the cutting part 2 and the fixing part 1, and then takes out the two dust covers 12, grabs the two spring latches 10 and moves them out of the slots 11. At this time, the ring plate 7 is not limited by the spring latches 10, and the elastic force of the compression spring 8 is used to push the ring plate 7 and the multiple positioning blocks 4 downward, thereby pushing the cutting part 2 downward and separating it from the fixing part 1, so that the staff can directly replace the cutting part 2. When reinstalling, it is only necessary to align the multiple positioning blocks 4 at the top of the cutting part 2 with the multiple positioning grooves 5 and insert them, and then fix them with bolts.

[0026] Refer to the instruction manual Figure 1 and Figure 5 The utility model provides a drilling tool, including a drilling tool body 14, a mounting groove 15 is provided at the bottom of the drilling tool body 14, the fixing part 1 is inserted into the mounting groove 15, and the fixing part 1 and the drilling tool body 14 are fixed together by a plurality of bolts, so that it is convenient for workers to install and disassemble the fixing part 1;

[0027] A rubber sealing ring 16 is provided between the fixing portion 1 and the mounting groove 15. The rubber sealing ring 16 is sleeved on the outer wall of the fixing portion 1. The rubber sealing ring 16 can improve the sealing performance and increase the firmness between the fixing portion 1 and the mounting groove 15.

[0028] In order to reduce the debris between the fixing part 1 and the mounting groove 15, an annular guide plate 17 is provided on the top of the fixing part 1. The annular guide plate 17 is fixedly sleeved on the outer wall of the fixing part 1. The debris is guided by the annular guide plate 17 to flow away quickly, thereby reducing the amount of debris between the fixing part 1 and the mounting groove 15.

[0029] In order to further improve the firmness between the fixing part 1 and the mounting groove 15, a plurality of limit grooves 18 adapted to the limit blocks 13 are opened on the inner wall of the mounting groove 15, and the plurality of limit blocks 13 are respectively arranged in the plurality of limit grooves 18. By utilizing the cooperation between the limit blocks 13 and the limit grooves 18, the firmness between the fixing part 1 and the drilling tool body 14 can be improved.

[0030] By arranging an annular deflector plate 17 at the top of the drill tool body 14, when the fixing part 1 is fixed in the installation groove 15, the top of the annular deflector plate 17 contacts the top of the drill tool body 14, which can guide the debris generated by drilling out, avoiding a large amount of debris entering between the fixing part 1 and the installation groove 15 due to the drill tool body 14 blocking the debris. And a rubber sealing ring 16 is arranged between the fixing part 1 and the installation groove 15 to further improve the sealing performance between the fixing part 1 and the installation groove 15.

[0031] Finally, the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A drill bit, characterized in that: The invention comprises a fixing part (1) and a cutting part (2) which are detachably fixed together at the top and the bottom, a plurality of conical teeth (3) being fixedly provided at the bottom end of the cutting part (2), a plurality of positioning blocks (4) being fixedly provided at the top end of the cutting part (2), a plurality of positioning grooves (5) matching with the positioning blocks (4) being provided at the bottom of the fixing part (1), and the positioning blocks (4) being inserted into the positioning grooves (5); An annular cavity (6) connected to the plurality of positioning grooves (5) is provided inside the fixing portion (1); a ring plate (7) is slidably provided inside the annular cavity (6); the bottom end of the ring plate (7) contacts the bottom ends of the plurality of positioning blocks (4); a plurality of compression springs (8) are fixedly provided on the top of the ring plate (7); the bottom end of each compression spring (8) is connected to the inner wall of the top of the annular cavity (6); The outer walls on both sides of the fixing portion (1) are provided with receiving grooves (9), and spring latches (10) are fixedly inserted into the two receiving grooves (9). The outer walls on both sides of the ring plate (7) are provided with slots (11), and one end of the spring latch (10) is plugged into the slot (11).

2. A drill bit according to claim 1, characterized in that: Dust covers (12) are inserted into the two storage slots (9), and the dust covers (12) are arranged outside the spring latch (10).

3. A drill bit according to claim 1, characterized in that: A plurality of limit blocks (13) are fixedly provided on the top of the outer wall of the fixing portion (1), and the plurality of limit blocks (13) are distributed in a ring array on the outer wall of the fixing portion (1).

4. A drilling tool using the drill bit according to any one of claims 1 to 3, characterized in that: It comprises a drilling tool body (14), wherein a mounting groove (15) is provided at the bottom end of the drilling tool body (14), the fixing part (1) is inserted into the mounting groove (15), and the fixing part (1) and the drilling tool body (14) are fixed together by a plurality of bolts.

5. The drilling tool according to claim 4, characterized in that: A rubber sealing ring (16) is provided between the fixing portion (1) and the mounting groove (15), and the rubber sealing ring (16) is sleeved on the outer wall of the fixing portion (1).

6. The drilling tool according to claim 4, characterized in that: An annular guide plate (17) is provided on the top of the fixing portion (1), and the annular guide plate (17) is fixedly sleeved on the outer wall of the fixing portion (1).

7. The drilling tool according to claim 4, characterized in that: The inner wall of the installation groove (15) is provided with a plurality of limit grooves (18) adapted to the limit blocks (13), and the plurality of limit blocks (13) are respectively arranged in the plurality of limit grooves (18).

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