Wear-resistant hard alloy glass triangular drill

Abstract

The utility model relates to the technical field of drill bits, and provides a wear-resistant hard alloy glass triangular drill which comprises a handle, an installation groove is formed in the top of the handle, a polygonal groove is formed in the middle of the handle, a polygonal column is movably installed in an inner cavity of the polygonal groove, and a transverse plate is fixedly installed on the right side of the polygonal column. Extension plates are movably mounted on the right sides of inner cavities of the transverse plates through springs; according to the wear-resistant hard alloy glass triangular drill, through cooperative use of a polygonal column structure and a transverse plate structure, when the wear-resistant hard alloy glass triangular drill works, firstly, a drill bit and a handle are rotationally fixed through threads, then a transverse plate is moved downwards to enable a strip-shaped block to move to an inner cavity of a bottom clamping groove, and the drill bit is limited by a polygonal column to be prevented from rotating; and the strip-shaped block is moved to the inner cavity of the top clamping groove, so that the polygonal column leaves the polygonal hole, and then the drill bit can be quickly disassembled, so that the drill bit can be quickly assembled and disassembled, and the service life of the drill bit is prolonged to a certain extent.

Description

Technical Field

[0001] The utility model relates to the technical field of drill bits, and particularly to a wear-resistant cemented carbide glass triangular drill bit. Background Technique

[0002] A drill bit is a tool used to drill through holes or blind holes in solid materials and can also ream existing holes, which is extremely useful in production and daily life. When the drill bit is working, rotational sliding and axial sliding will occur when it is subjected to rotational resistance and axial pressure. When using a three-jaw chuck to drill holes on a drill press or an electric drill, a round-shank drill bit is mostly used. However, when using a drill bit, the drill bit often needs to be replaced due to wear. However, the entire drill bit often needs to be replaced, which causes less wear to the drill shank and results in a certain waste of resources.

[0003] After retrieval, the Chinese patent publication number is CN215969463U, which discloses a wear-resistant cemented carbide glass triangular drill bit. In this patent, it is connected to the drilling machine through a connecting groove to increase stability, thereby reducing vibration during the use of the drill bit and reducing the use risk. At the same time, by rotating the movable clamping part, the clamping groove on the clamping block is slidably connected to the first limiting plate and the second limiting plate, and the limiting frame corresponds to the limiting groove. Thus, by rotating the adjustable inner ring, the built-in clamping part and the movable clamping part are staggered from the upper fixed clamping block, and the fixation of the upper clamping part and the lower clamping part is completed, which is convenient for frequent replacement and use of the drill bit and reduces resource consumption;

[0004] However, when the above device is used, a clamping device is set to connect the drill shank and the drill bit. However, because the drill bit is often used to strike an object or rotate and excavate an object, during operation, the drill bit is subjected to a severe impact force. Therefore, although the above simple clamping device can be quickly disassembled, its actual service life is relatively low and it is easy to be damaged. Content of the Utility Model

[0005] The utility model provides a wear-resistant cemented carbide glass triangular drill bit, which has the advantages of being able to quickly install and disassemble the drill bit and improving the service life of the drill bit to a certain extent, and solves the problem of low service life of the drill bit.

[0006] The technical solution of the utility model is as follows: A wear-resistant cemented carbide glass triangular drill bit includes a handle. An installation groove is opened at the top of the handle, a polygonal groove is opened in the middle of the handle, a polygonal column is movably installed in the inner cavity of the polygonal groove, a cross plate is fixedly installed on the right side of the polygonal column, an extension plate is movably installed on the right side of the inner cavity of the cross plate through a spring, a strip-shaped block is fixedly installed on the right side of the extension plate, strip-shaped grooves are opened on the right side of the handle, clamping grooves are opened on the upper and lower sides on the right side of the inner cavity of the strip-shaped groove, the bottom of the handle is detachably installed with a drill bit, a rubber ring is fixedly installed on the edge of the top of the drill bit, a round block is fixedly installed in the middle of the top of the drill bit, a polygonal hole is opened at the top of the round block, and jacks are opened on the left and right sides of the outer surface of the drill bit.

[0007] Preferably, one side of the installation groove penetrates through the left side of the top of the handle, and the other side of the installation groove is opened on the right side of the handle. The shape of the installation groove matches the shape of the installation bolt. Therefore, during use, the handle can be combined and connected with other structures through the bolt and the installation groove.

[0008] Preferably, the shape of the cross-section of the inner cavity of the polygonal groove matches the shape of the cross-section of the polygonal column, and the shape of the cross-section of the polygonal column matches the shape of the cross-section of the inner cavity of the polygonal hole. Therefore, during use, the polygonal column can move smoothly up and down in the polygonal groove and the inner cavity of the polygonal hole.

[0009] Preferably, the position of the cross plate is located in the inner cavity of the strip-shaped groove. After the cross plate moves to the top or bottom of the inner cavity of the strip-shaped groove, the remaining height of the inner cavity of the strip-shaped groove is greater than the inner cavity depth of the polygonal hole. Therefore, during use, by moving the cross plate up and down, making it move up and down to the top or bottom of the inner cavity of the strip-shaped groove, the polygonal column can be moved out of or into the inner cavity of the polygonal hole.

[0010] Preferably, the movable length of the extension plate in the inner cavity of the cross plate is greater than the length of the inner cavity of the clamping groove. The shape of the inner cavity of the clamping groove matches the shape of the outer surface of the strip-shaped block. Therefore, during use, by stretching the strip-shaped block outwards, the extension plate is stretched and moved outwards of the cross plate. At this time, the cross plate can move up and down in the inner cavity of the strip-shaped groove. After the cross plate moves to the top or bottom of the inner cavity of the strip-shaped groove, release the strip-shaped block. Under the elastic force of the spring, the strip-shaped block extends into the inner cavity of the clamping groove at the top or bottom, thereby fixing the positions of the cross plate and the polygonal column.

[0011] Preferably, after the bottom of the polygonal column extends into the inner cavity of the polygonal hole, the distance between the top of the polygonal column and the top of the inner cavity of the polygonal groove is greater than the inner cavity depth of the polygonal hole. Therefore, during use, after the polygonal column moves up to the top of the polygonal groove, the bottom of the polygonal column moves out of the inner cavity of the polygonal hole.

[0012] Preferably, a round hole is opened at the bottom of the handle. The bottom of the inner cavity of the polygonal groove penetrates through the top of the inner cavity of the round hole. The shape of the inner cavity of the round hole matches the shape of the outer surface of the round block, and threads matching the shape of the outer surface of the round block are provided on the inner wall of the round hole. Therefore, during use, the handle and the drill bit are connected by the threads on the inner wall of the round hole and the threads on the outer surface of the round block.

[0013] Preferably, the rubber ring is made of synthetic rubber material and is arranged on the outer ring of the round block. Therefore, during use, the rubber ring is used to seal the connection between the drill bit and the bottom of the handle, improving the sealing performance of the connection and reducing the collision friction force between the two during work.

[0014] The working principle and beneficial effects of the present utility model are as follows:

[0015] This wear-resistant cemented carbide glass triangular drill, through the combined use of a polygonal column structure and a cross plate structure, during operation, first fix the drill bit and the handle by screw rotation, then move the cross plate downwards so that the strip-shaped block moves into the inner cavity of the bottom clamping groove, and use the polygonal column to limit the drill bit to prevent it from rotating. When disassembly and replacement are required, move the strip-shaped block into the inner cavity of the top clamping groove, so that the polygonal column leaves the polygonal hole, and then the drill bit can be quickly disassembled, achieving the effect of being able to quickly install and disassemble the drill bit and improving the service life of the drill bit to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present utility model will be further described in detail below in conjunction with the drawings and specific embodiments.

[0017] Figure 1 is a front view schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 is a bottom view schematic diagram of the overall structure of the present utility model;

[0019] Figure 3 is a schematic diagram of the appearance after the overall structure of the present utility model is cut open;

[0020] Figure 4 is for the present utility model Figure 3 schematic diagram of the structure at position A.

[0021] In the figure: 1, handle; 2, installation groove; 3, polygonal groove; 4, polygonal column; 5, cross plate; 6, extension plate; 7, strip-shaped block; 8, strip-shaped groove; 9, clamping groove; 10, drill bit; 11, rubber ring; 12, round block; 13, polygonal hole; 14, jack. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with 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 making creative efforts fall within the scope of protection of the present utility model.

[0023] Please refer to Figures 1 to 4As shown in the figure, a wear-resistant cemented carbide glass triangular drill bit includes a handle 1. An installation groove 2 is provided at the top of the handle 1. One side of the installation groove 2 penetrates through the left side of the top of the handle 1, and the other side of the installation groove 2 is provided on the right side of the handle 1. The shape of the installation groove 2 matches the shape of the installation bolt. Therefore, during use, the handle 1 can be combined and connected with other structures through the bolt and the installation groove 2. A polygonal groove 3 is provided in the middle of the handle 1. A polygonal column 4 is movably installed in the inner cavity of the polygonal groove 3. The shape of the cross-section of the inner cavity of the polygonal groove 3 matches the shape of the cross-section of the polygonal column 4. The shape of the cross-section of the polygonal column 4 matches the shape of the cross-section of the inner cavity of the polygonal hole 13. Therefore, during use, the polygonal column 4 can smoothly move up and down in the inner cavities of the polygonal groove 3 and the polygonal hole 13. A cross plate 5 is fixedly installed on the right side of the polygonal column 4. An extension plate 6 is movably installed on the right side of the inner cavity of the cross plate 5 through a spring. A strip-shaped block 7 is fixedly installed on the right side of the extension plate 6. A strip-shaped groove 8 is provided on the right side of the handle 1. Clamping grooves 9 are provided on the upper and lower sides of the right side of the inner cavity of the strip-shaped groove 8. The movable length of the extension plate 6 in the inner cavity of the cross plate 5 is greater than the length of the inner cavity of the clamping groove 9. The shape of the inner cavity of the clamping groove 9 matches the shape of the outer surface of the strip-shaped block 7. Therefore, during use, by pulling the strip-shaped block 7 outwards, the extension plate 6 is pulled and moved outwards of the cross plate 5. At this time, the cross plate 5 can move up and down in the inner cavity of the strip-shaped groove 8. After the cross plate 5 moves to the top or bottom of the inner cavity of the strip-shaped groove 8, the strip-shaped block 7 is released. Under the elastic force of the spring, the strip-shaped block 7 extends into the inner cavity of the top or bottom clamping groove 9 to fix the positions of the cross plate 5 and the polygonal column 4. The drill bit 10 is detachably installed at the bottom of the handle 1. A rubber ring 11 is fixedly installed at the edge of the top of the drill bit 10. The rubber ring 11 is made of synthetic rubber material. The rubber ring 11 is arranged on the outer ring of the round block 12. Therefore, during use, the rubber ring 11 is used to seal the connection between the drill bit 10 and the bottom of the handle 1, improving the sealing performance of the connection and reducing the collision friction force between the two during work. A round block 12 is fixedly installed in the middle of the top of the drill bit 10. A round hole is provided at the bottom of the handle 1. The bottom of the inner cavity of the polygonal groove 3 penetrates through the top of the inner cavity of the round hole. The shape of the inner cavity of the round hole matches the shape of the outer surface of the round block 12. Threads matching the shape of the outer surface of the round block 12 are provided on the inner wall of the round hole. Therefore, during use, the handle 1 and the drill bit 10 are connected through the threads on the inner wall of the round hole and the threads on the outer surface of the round block 12. A polygonal hole 13 is provided at the top of the round block 12. The position of the cross plate 5 is located in the inner cavity of the strip-shaped groove 8. After the cross plate 5 moves to the top or bottom of the inner cavity of the strip-shaped groove 8, the remaining height of the inner cavity of the strip-shaped groove 8 is greater than the depth of the inner cavity of the polygonal hole 13. Therefore, during use, by moving the cross plate 5 up and down, it is moved to the top or bottom of the inner cavity of the strip-shaped groove 8 to change the polygonal column 4 moving out of or extending into the inner cavity of the polygonal hole 13. After the bottom of the polygonal column 4 extends into the inner cavity of the polygonal hole 13, the distance between the top of the polygonal column 4 and the top of the inner cavity of the polygonal groove 3 is greater than the depth of the inner cavity of the polygonal hole 13. Therefore, during use, after the polygonal column 4 moves up to the top of the polygonal groove 3,The bottom of the polygonal column 4 is removed from the inner cavity of the polygonal hole 13, and insertion holes 14 are provided on both the left and right sides of the outer surface of the drill bit 10.

[0024] Working principle: During operation, first insert a tool into the insertion hole 14, then connect the drill bit 10 and the handle 1 through the internal thread of the inner wall of the circular hole at the bottom of the handle 1 and the external thread on the outer surface of the circular block 12 at the top of the drill bit 10. Then manually stretch the strip-shaped block 7 so that the extension plate 6 and the strip-shaped block 7 extend outwards. At this time, the cross plate 5 can move downward in the inner cavity of the strip-shaped groove 8. After moving the cross plate 5 to the bottom of the inner cavity of the strip-shaped groove 8, release the strip-shaped block 7 so that it automatically contracts into the inner cavity of the cross plate 5 along with the extension plate 6 under the elastic force of the spring. At the same time, the strip-shaped block 7 moves into the inner cavity of the bottom position clamping groove 9 and is fixed. When the cross plate 5 moves downward, it drives the polygonal column 4 to move downward synchronously and enter the inner cavity of the polygonal hole 13, so that the drill bit 10 and the handle 1 cannot be rotated and separated at this time, thereby achieving the purpose of simply and conveniently assembling the drill bit 10 and the handle 1. When it is necessary to disassemble and replace the drill bit 10, manually stretch the strip-shaped block 7 and then move the cross plate 5 to drive the polygonal column 4 upward, so that the strip-shaped block 7 moves into the inner cavity of the clamping groove 9 at the top position. Then use a tool to rotate and separate the drill bit 10 and the handle 1 through the insertion hole 14, and the drill bit 10 can be quickly disassembled.

[0025] In summary, compared with general similar devices, this wear-resistant cemented carbide glass triangular drill has the advantages of being able to quickly install and disassemble the drill bit 10 and improving the service life of the drill bit 10 to a certain extent.

[0026] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A wear-resistant cemented carbide glass triangular drill bit, characterized in that, It includes a handle (1). An installation groove (2) is formed at the top of the handle (1). A polygonal groove (3) is formed in the middle of the handle (1). A polygonal column (4) is movably installed in the inner cavity of the polygonal groove (3). A cross plate (5) is fixedly installed on the right side of the polygonal column (4). An extension plate (6) is movably installed on the right side of the inner cavity of the cross plate (5) through a spring. A strip-shaped block (7) is fixedly installed on the right side of the extension plate (6). A strip-shaped groove (8) is formed on the right side of the handle (1). Clamping grooves (9) are formed on both the upper and lower sides on the right side of the inner cavity of the strip-shaped groove (8). A drill bit (10) is detachably installed at the bottom of the handle (1). A rubber ring (11) is fixedly installed on the edge of the top of the drill bit (10). A round block (12) is fixedly installed in the middle of the top of the drill bit (10). A polygonal hole (13) is formed at the top of the round block (12). Insertion holes (14) are formed on both the left and right sides of the outer surface of the drill bit (10).

2. The wear-resistant cemented carbide glass triangular drill according to claim 1, characterized in that, One side of the installation groove (2) penetrates through the left side of the top of the handle (1), and the other side of the installation groove (2) is formed on the right side of the handle (1). The shape of the installation groove (2) matches the shape of the installation bolt.

3. A wear-resistant cemented carbide glass triangular drill according to claim 1, characterized in that, The shape of the cross-section of the inner cavity of the polygonal groove (3) matches the shape of the cross-section of the polygonal column (4), and the shape of the cross-section of the polygonal column (4) matches the shape of the cross-section of the inner cavity of the polygonal hole (13).

4. A wear-resistant cemented carbide glass triangular drill according to claim 1, characterized in that The position of the cross plate (5) is located in the inner cavity of the strip-shaped groove (8). After the cross plate (5) moves to the top or bottom of the inner cavity of the strip-shaped groove (8), the remaining height in the inner cavity of the strip-shaped groove (8) is greater than the inner cavity depth of the polygonal hole (13).

5. A wear-resistant cemented carbide glass triangular drill according to claim 1, characterized in that, The movable length of the extension plate (6) in the inner cavity of the cross plate (5) is greater than the length of the inner cavity of the clamping groove (9). The shape of the inner cavity of the clamping groove (9) matches the shape of the outer surface of the strip-shaped block (7).

6. A wear-resistant cemented carbide glass triangular drill according to claim 1, characterized in that, After the bottom of the polygonal column (4) extends into the inner cavity of the polygonal hole (13), the distance between the top of the polygonal column (4) and the top of the inner cavity of the polygonal groove (3) is greater than the inner cavity depth of the polygonal hole (13).

7. A wear-resistant cemented carbide glass triangular drill according to claim 1, characterized in that, A round hole is formed at the bottom of the handle (1). The bottom of the inner cavity of the polygonal groove (3) penetrates through the top of the inner cavity of the round hole. The shape of the inner cavity of the round hole matches the shape of the outer surface of the round block (12), and threads matching the shape of the outer surface of the round block (12) are formed on the inner wall of the round hole.

8. A wear-resistant cemented carbide glass triangular drill according to claim 1, characterized in that, The rubber ring (11) is made of synthetic rubber material and is arranged on the outer ring of the round block (12).

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