A drilling device with dust removal function for metal product processing and a drilling method thereof

Abstract

The application belongs to the technical field of metal product processing, and discloses a drilling device with dust removal function for metal product processing and a drilling method thereof, which comprises a processing table, the top end of the processing table is fixedly provided with a cylinder, the bottom end of the cylinder is connected with a shell, the bottom end of the shell is rotatably provided with a drill bit, the drill bit is arranged above the processing table, the outside of the drill bit is provided with a dust removal assembly, the dust removal assembly comprises a protective cover arranged outside the drill bit, the inner wall of the protective cover is fixedly provided with a dust absorption plate, the inside of the protective cover is provided with a cleaning assembly, when drilling the metal product, first, place the metal product on the top end of the processing table so that it is below the drill bit, then drive the shell to move downward by the cylinder, the downward movement of the shell drives the movement of the protective cover, and the movement of the protective cover drives the movement of the dust absorption plate, the dust absorption plate absorbs the metal dust in the drilling process of the drill bit, preventing the flying dust from escaping, which not only improves the safety of the processing environment, but also ensures the processing quality of the product.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of metal product processing, and particularly relates to a drilling device with a dust removal function for metal product processing and a drilling method thereof. BACKGROUND

[0002] The drilling device is a mechanical device specially used for processing holes in various solid materials. The core part of the device is a drill bit. In the drilling process, the drill bit mainly realizes the cutting and removal of materials through rotary motion, and the axial movement of the drill bit serves as a feeding motion to ensure that the drill bit can gradually penetrate into the material to complete the processing of the hole.

[0003] The drilling device has a very wide application field, covering various fields from light industry to heavy industry. In particular, in the processing of metal products, the drilling device plays a crucial role. Whether it is the manufacture of automobile parts, aerospace equipment, or metal components in building structures, the drilling device can efficiently and accurately complete the required hole processing task, greatly improving production efficiency and processing precision.

[0004] During the drilling of metal products, a large amount of metal dust is generated. These dusts not only cause damage to the respiratory systems of nearby workers, but also affect the quality and appearance of the products if they adhere to the processing surface. SUMMARY

[0005] The purpose of the present application is to provide a drilling device with a dust removal function for metal product processing and a drilling method thereof to solve the problems raised in the background art.

[0006] To achieve the above purpose, the present application provides the following technical solution: a drilling device with a dust removal function for metal product processing, comprising a processing table, a gas cylinder fixedly installed at the top end of the processing table, an outer shell connected to the bottom end of the gas cylinder, a drill bit rotatably installed at the bottom end of the outer shell, the drill bit being arranged above the processing table, and a dust removal assembly arranged outside the drill bit.

[0007] The dust removal assembly comprises a protective cover arranged outside the drill bit, a dust suction plate fixedly installed on the inner wall of the protective cover, and a cleaning assembly arranged inside the protective cover.

[0008] As a further technical solution of the present application, the protective cover is slidingly installed on the outer wall of the outer shell.

[0009] As a further technical solution of the present application, the top end of the protective cover is fixedly connected with a guide rod, two guide rods are symmetrically arranged, both of the guide rods are slidingly installed inside the outer shell, and springs are arranged on the outer walls of both of the guide rods.

[0010] As a further technical scheme of the present application, the cleaning assembly comprises a scraping ring arranged inside the protective cover, a reciprocating screw rod is fixedly connected to the top end of the scraping ring, a first gear is threadedly connected to the outer wall of the reciprocating screw rod, the first gear is rotatably installed inside the protective cover, a second gear is meshingly connected to one side of the first gear, a first rotating shaft is fixedly installed at the top end of the second gear, a first bevel gear is fixedly installed at the top end of the first rotating shaft, a second bevel gear is meshingly connected to one side of the first bevel gear, a second rotating shaft is fixedly installed at one side of the second bevel gear, a third gear is fixedly installed at one end of the second rotating shaft away from the second bevel gear, and a tooth block is meshingly connected to one side of the third gear and uniformly installed on the inner wall of the shell.

[0011] As a further technical scheme of the present application, the outer wall of the scraping ring is in sliding fit with the inner wall of the dust absorption plate.

[0012] As a further technical scheme of the present application, the tooth block is rotatably installed inside the shell through a third rotating shaft, and a torsional spring is arranged on the outer wall of the third rotating shaft.

[0013] As a further technical scheme of the present application, a dust collecting box is installed at the bottom end of the protective cover.

[0014] As a further technical scheme of the present application, a rotating plate is rotatably connected to the bottom end of the scraping ring through a rotating assembly, brush hairs are fixedly installed on the outer wall of the rotating plate, and the brush hairs are arranged in an annular array.

[0015] As a further technical scheme of the present application, the rotating assembly comprises a fourth gear arranged inside the scraping ring, the fourth gear is meshingly connected to the rotating plate, a fourth rotating shaft is fixedly installed at the top end of the fourth gear, a helical groove is formed in the interior of the fourth rotating shaft, a sliding groove is slidingly connected to the interior of the helical groove, and the sliding groove is fixedly installed inside the protective cover.

[0016] A drilling method of a metal product processing drilling device with a dust removal function, comprising the following steps:

[0017] S1: when drilling the metal product, first place it on the top end of the processing table, so that it is located below the drill bit, then drive the shell to move downward through the air cylinder, and the movement of the shell drives the drill bit to move downward to drill the metal product;

[0018] S2: at the same time, the shell moves to drive the tooth block to move downward, the inclined surface at the bottom of the tooth block is in contact with the third gear and is forced to rotate upward to the interior of the shell, the rotation of the tooth block drives the rotation of the third rotating shaft, the rotation of the third rotating shaft deforms the torsional spring to store elastic potential energy, and when the tooth block is separated from the third gear, the elastic potential energy is released through the torsional spring to reset, so that the third gear does not rotate;

[0019] S3: when the shell moves up after drilling, the movement of the shell drives the movement of the tooth block, the tooth block meshes with the third gear to make it rotate, the rotation of the third gear drives the rotation of the second rotating shaft, the rotation of the second rotating shaft drives the rotation of the second bevel gear, the rotation of the second bevel gear drives the rotation of the first bevel gear, the rotation of the first bevel gear drives the rotation of the first rotating shaft, the rotation of the first rotating shaft drives the rotation of the second gear, the rotation of the second gear drives the rotation of the first gear, the rotation of the first gear makes the reciprocating screw rod move downward, the movement of the reciprocating screw rod drives the movement of the scraping ring, so that the scraping ring scrapes off the metal dust adsorbed on the outer wall of the dust absorption plate;

[0020] S4: meanwhile, the movement of the scraping ring drives the movement of the rotating plate and the fourth gear, and makes the fourth rotating shaft slide inside the shell, and the spiral groove slides on the outer wall of the sliding groove, and is limited to make the fourth rotating shaft rotate, the rotation of the fourth rotating shaft drives the rotation of the fourth gear, the rotation of the fourth gear drives the rotation of the rotating plate, the rotation of the rotating plate drives the rotation of the brush, so that the brush rotates when cleaning the outer wall of the dust absorption plate, and finally the metal dust on the outer wall of the dust absorption plate is cleaned into the dust collection box for collection.

[0021] The beneficial effects of the present application are as follows:

[0022] The present application is provided with a dust removal assembly, when drilling the metal product, first place it on the top end of the machining table, so that it is below the drill bit, then drive the shell to move downward by the air cylinder, the movement of the shell drives the drill bit to move downward to drill the metal product, the downward movement of the shell drives the movement of the protective cover, the movement of the protective cover drives the movement of the dust absorption plate, the dust absorption plate adsorbs the metal dust during the drilling process of the drill bit, preventing the dust from escaping, not only improving the safety of the processing environment, but also ensuring the processing quality of the product.

[0023] The present application is provided with a dust removal assembly, when drilling the metal product, first place it on the top end of the machining table, so that it is below the drill bit, then drive the shell to move downward by the air cylinder, the movement of the shell drives the drill bit to move downward to drill the metal product, the downward movement of the shell drives the movement of the protective cover, the movement of the protective cover drives the movement of the dust absorption plate, the dust absorption plate adsorbs the metal dust during the drilling process of the drill bit, preventing the dust from escaping, not only improving the safety of the processing environment, but also ensuring the processing quality of the product.

[0024] The present application sets the rotating assembly, when the scraping ring and the rotating plate are lowered to clean, the fourth rotating shaft slides in the inside of the shell, the spiral groove slides on the outer wall of the sliding groove, the fourth rotating shaft rotates through the limiting of the spiral groove, the rotation of the fourth rotating shaft drives the rotation of the fourth gear, the rotation of the fourth gear drives the rotation of the rotating plate, the rotation of the rotating plate drives the rotation of the brush, the brush rotates when cleaning the outer wall of the dust plate, the cleaning is more thorough, and the overall cleaning and cleaning effect are improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the overall structure schematic diagram of the present application;

[0026] Figure 2 It is the overall structure section schematic diagram of the present application;

[0027] Figure 3 It is the structure section schematic diagram of the shell and the protective cover of the present application;

[0028] Figure 4 It is the structure section schematic diagram of the protective cover of the present application;

[0029] Figure 5 It is the structure section schematic diagram of the protective cover of the present application; Figure 4 It is the structure section schematic diagram of the protective cover of the present application;

[0030] Figure 6 It is the structure section schematic diagram of the shell of the present application;

[0031] Figure 7 It is the structure section schematic diagram of the protective cover of the present application; Figure 6 It is the structure section schematic diagram of the protective cover of the present application;

[0032] Figure 8 It is the structure section schematic diagram of the scraping ring of the present application.

[0033] In the figure: 1, processing table; 2, air cylinder; 3, shell; 4, drill bit; 5, protective cover; 6, dust plate; 7, guide rod; 8, spring; 9, scraping ring; 10, reciprocating screw rod; 11, first gear; 12, second gear; 13, first rotating shaft; 14, first bevel gear; 15, second bevel gear; 16, second rotating shaft; 17, third gear; 18, tooth block; 19, third rotating shaft; 20, torsion spring; 21, rotating plate; 22, brush; 23, fourth gear; 24, fourth rotating shaft; 25, spiral groove; 26, sliding groove; 27, dust collecting box. DETAILED DESCRIPTION

[0034] With reference to the drawings and embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0035] As shown in Figures 1 to 8 Embodiments of the present application, a metal product processing drilling device with dust removal function, comprising a processing table 1, the top end of the processing table 1 is fixedly installed with a cylinder 2, the bottom end of the cylinder 2 is connected with a shell 3, the bottom end of the shell 3 is rotatably installed with a drill bit 4, the drill bit 4 is arranged above the processing table 1, the outer part of the drill bit 4 is provided with a dust removal assembly;

[0036] Among them, the dust removal assembly comprises a protective cover 5 arranged outside the drill bit 4, the inner wall of the protective cover 5 is fixedly installed with a dust absorption plate 6, and the inner part of the protective cover 5 is provided with a cleaning assembly.

[0037] The drill bit 4 is driven to rotate by the built-in motor;

[0038] The dust absorption plate 6 is arranged as a magnetic plate, which is used for absorbing the metal dust generated in the process of drilling the metal product;

[0039] Through the setting of the dust removal assembly, when the metal product is drilled, it is first placed on the top end of the processing table 1, so that it is located below the drill bit 4, then the shell 3 is driven to move downward by the cylinder 2, and the movement of the shell 3 drives the drill bit 4 to move downward to drill the metal product;

[0040] The movement of the shell 3 drives the movement of the protective cover 5, and the movement of the protective cover 5 drives the movement of the dust absorption plate 6. In the process of drilling the drill bit 4, the dust absorption plate 6 is used for absorbing the metal dust, preventing the dust from escaping, improving the safety of the processing environment, and ensuring the processing quality of the product.

[0041] As shown in Figures 1 to 3 The protective cover 5 is slidably installed on the outer wall of the shell 3.

[0042] When the shell 3 moves downward, the protective cover 5 moves, and when the bottom end of the protective cover 5 contacts the top end of the processing table 1, the shell 3 continues to move downward in the interior of the protective cover 5, ensuring the stability of the protection.

[0043] As shown in Figure 3 and Figure 4 The top end of the protective cover 5 is fixedly connected with a guide rod 7, the guide rod 7 is symmetrically arranged, the two guide rods 7 are slidably installed in the interior of the shell 3, and the outer wall of the two guide rods 7 is provided with a spring 8.

[0044] When the bottom end of the protective cover 5 is attached to the top end of the processing table 1 and the shell 3 is still moving downward, the extrusion spring 8 is deformed to store elastic potential energy. When the drilling is completed and the shell 3 moves upward, the elastic potential energy is released through the spring 8 to assist the upward movement of the protective cover 5.

[0045] As shown in Figure 3 , Figure 4 and Figure 5 , the cleaning assembly includes a scraping ring 9 arranged inside the protective cover 5. The top end of the scraping ring 9 is fixedly connected with a reciprocating screw rod 10. The outer wall of the reciprocating screw rod 10 is threadedly connected with a first gear 11. The first gear 11 is rotatably installed inside the protective cover 5. One side of the first gear 11 is meshingly connected with a second gear 12. The top end of the second gear 12 is fixedly installed with a first rotating shaft 13. The top end of the first rotating shaft 13 is fixedly installed with a first bevel gear 14. One side of the first bevel gear 14 is meshingly connected with a second bevel gear 15. One side of the second bevel gear 15 is fixedly installed with a second rotating shaft 16. The end of the second rotating shaft 16 away from the second bevel gear 15 is fixedly installed with a third gear 17. One side of the third gear 17 is meshingly connected with a toothed block 18. The toothed block 18 is uniformly installed on the inner wall of the shell 3.

[0046] Through the arrangement of the cleaning assembly, when the drilling is completed and the shell 3 moves upward, the movement of the shell 3 drives the movement of the toothed block 18. The meshing of the toothed block 18 and the third gear 17 makes the third gear 17 rotate. The rotation of the third gear 17 drives the rotation of the second rotating shaft 16. The rotation of the second rotating shaft 16 drives the rotation of the second bevel gear 15. The rotation of the second bevel gear 15 drives the rotation of the first bevel gear 14. The rotation of the first bevel gear 14 drives the rotation of the first rotating shaft 13. The rotation of the first rotating shaft 13 drives the rotation of the second gear 12. The rotation of the second gear 12 drives the rotation of the first gear 11. The rotation of the first gear 11 makes the reciprocating screw rod 10 move downward. The movement of the reciprocating screw rod 10 drives the reciprocating movement of the scraping ring 9 once. The scraping ring 9 scrapes the metal dust adsorbed on the outer wall of the dust absorption plate 6, preventing the metal dust from accumulating too much on the outer wall of the dust absorption plate 6 to block the surface, reducing the adsorption capacity of the magnetic plate. Scraping the metal dust on the outer wall of the dust absorption plate 6 each time the shell 3 moves upward can restore the adsorption capacity of the dust absorption plate 6 and improve the dust removal efficiency.

[0047] As shown in Figure 4 , the outer wall of the scraping ring 9 is in sliding attachment with the inner wall of the dust absorption plate 6.

[0048] As shown in Figure 6 and Figure 7 , the toothed block 18 is rotatably installed inside the shell 3 through a third rotating shaft 19. The outer wall of the third rotating shaft 19 is provided with a torsion spring 20.

[0049] A sliding groove 26 is formed in the inner part of the shell 3 for the upward rotation of the toothed block 18;

[0050] The bottom of the tooth block 18 is inclined;

[0051] When the shell 3 moves from top to bottom, the shell 3 drives the tooth block 18 to move downward, and the inclined surface at the bottom of the tooth block 18 is in contact with the third gear 17 and is forced to rotate upward to the inside of the shell 3, so that the third gear 17 does not rotate, and the scraping ring 9 does not move to clean the metal dust;

[0052] At the same time, the rotation of the tooth block 18 drives the rotation of the third rotating shaft 19, and the rotation of the third rotating shaft 19 deforms the torsional spring 20 to store elastic potential energy. When the tooth block 18 is separated from the third gear 17, the elastic potential energy is released by the torsional spring 20 to reset.

[0053] As shown in Figure 3 and Figure 4 , the bottom end of the protective cover 5 is provided with a dust collection box 27.

[0054] The metal dust scraped off by the scraping ring 9 is collected through the dust collection box 27;

[0055] The dust collection box 27 is magnetically connected with the bottom end of the protective cover 5, so that the dust collection box 27 can be easily removed for internal cleaning and maintenance.

[0056] As shown in Figure 3 , Figure 4 and Figure 8 , the bottom end of the scraping ring 9 is rotatably connected with a rotating plate 21 through a rotating assembly, and the outer wall of the rotating plate 21 is fixedly provided with brush hairs 22, which are arranged in a ring array.

[0057] The movement of the scraping ring 9 drives the movement of the rotating plate 21, and the movement of the rotating plate 21 drives the movement of the brush hairs 22, and in the process of movement, the brush hairs 22 are in contact with the outer wall of the dust collection plate 6, which helps to brush off the metal dust;

[0058] And because in the process of drilling, the metal dust splashes have high speed and kinetic energy, when they hit the outer wall of the dust collection plate 6, they will cause impact damage, making the surface of the dust collection plate 6 become pitted, and the brush hairs 22 can better embed into the pits to brush off the metal dust, so as to ensure the cleaning effect.

[0059] As shown in Figure 3 , Figure 4 and Figure 8 , the rotating assembly comprises a fourth gear 23 arranged in the interior of the scraping ring 9, the fourth gear 23 is in meshing connection with the rotating plate 21, the top end of the fourth gear 23 is fixedly provided with a fourth rotating shaft 24, the interior of the fourth rotating shaft 24 is provided with a spiral groove 25, the interior of the spiral groove 25 is slidably connected with a sliding groove 26, and the sliding groove 26 is fixedly arranged in the interior of the protective cover 5.

[0060] When the scraping ring 9 and the rotating plate 21 are lowered for cleaning, the fourth rotating shaft 24 slides in the inside of the shell 3, and the spiral groove 25 slides on the outer wall of the sliding groove 26, and the fourth rotating shaft 24 is limited to rotate, the fourth rotating shaft 24 drives the fourth gear 23 to rotate, the fourth gear 23 drives the rotating plate 21 to rotate, the rotating plate 21 drives the brush 22 to rotate, so that the brush 22 rotates when cleaning the outer wall of the dust absorption plate 6, and the cleaning is more thorough, and the comprehensiveness and the cleaning effect are further improved.

[0061] A drilling method of a metal product processing drilling device with a dust removal function, comprising the following steps:

[0062] S1: when drilling the metal product, first place it at the top end of the processing table 1, so that it is located below the drill bit 4, then drive the shell 3 to move downward by the air cylinder 2, and the movement of the shell 3 drives the drill bit 4 to move downward to drill the metal product;

[0063] S2: while the shell 3 moves, the tooth block 18 moves downward, the inclined surface at the bottom of the tooth block 18 contacts the third gear 17 and is forced to rotate upward to the inside of the shell 3, the rotation of the tooth block 18 drives the rotation of the third rotating shaft 19, the rotation of the third rotating shaft 19 deforms the torsional spring 20 to store elastic potential energy, and when the tooth block 18 is separated from the third gear 17, the elastic potential energy is released by the torsional spring 20 to reset, so that the third gear 17 does not rotate;

[0064] S3: when the shell 3 moves upward after drilling, the movement of the shell 3 drives the movement of the tooth block 18, the tooth block 18 meshes with the third gear 17 to rotate, the rotation of the third gear 17 drives the rotation of the second rotating shaft 16, the rotation of the second rotating shaft 16 drives the rotation of the second bevel gear 15, the rotation of the second bevel gear 15 drives the rotation of the first bevel gear 14, the rotation of the first bevel gear 14 drives the rotation of the first rotating shaft 13, the rotation of the first rotating shaft 13 drives the rotation of the second gear 12, the rotation of the second gear 12 drives the rotation of the first gear 11, and when the first gear 11 rotates, the reciprocating wire rod 10 moves downward, the movement of the reciprocating wire rod 10 drives the movement of the scraping ring 9, and the scraping ring 9 scrapes the metal dust adsorbed on the outer wall of the dust absorption plate 6;

[0065] S4: the movement of the scraping ring 9 drives the movement of the rotating plate 21 and the fourth gear 23, and makes the fourth rotating shaft 24 slide inside the shell 3, and the helical groove 25 slide on the outer wall of the sliding groove 26, and limit the rotation of the fourth rotating shaft 24 through the sliding groove 26, the rotation of the fourth rotating shaft 24 drives the rotation of the fourth gear 23, the rotation of the fourth gear 23 drives the rotation of the rotating plate 21, the rotation of the rotating plate 21 drives the rotation of the brush 22, and the brush 22 rotates when cleaning the outer wall of the dust collecting plate 6, and finally the metal dust on the outer wall of the dust collecting plate 6 is cleaned into the dust collecting box 27 for collection.

[0066] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drilling device for processing metal products with dust removal function, comprising a processing table (1), characterized in that: A cylinder (2) is fixedly installed at the top of the processing table (1). A housing (3) is connected to the bottom of the cylinder (2). A drill bit (4) is rotatably installed at the bottom of the housing (3). The drill bit (4) is located above the processing table (1). A dust removal component is provided on the outside of the drill bit (4). The dust removal assembly includes a protective cover (5) disposed outside the drill bit (4), a dust suction plate (6) is fixedly installed on the inner wall of the protective cover (5), and a cleaning assembly is disposed inside the protective cover (5). The cleaning assembly includes a scraper ring (9) disposed inside the protective cover (5). A reciprocating screw (10) is fixedly connected to the top of the scraper ring (9). A first gear (11) is threadedly connected to the outer wall of the reciprocating screw (10). The first gear (11) is rotatably mounted inside the protective cover (5). A second gear (12) is meshed with one side of the first gear (11). A first rotating shaft (13) is fixedly mounted at the top of the second gear (12). A first bevel gear (14) is fixedly mounted at the top of the first rotating shaft (13). A second bevel gear (15) is meshed with one side of the first bevel gear (14). A second rotating shaft (16) is fixedly mounted with one side of the second bevel gear (15). A third gear (17) is fixedly mounted at the end of the second rotating shaft (16) away from the second bevel gear (15). A tooth block (18) is meshed with one side of the third gear (17). The tooth blocks (18) are evenly mounted on the inner wall of the outer shell (3). The bottom end of the scraper ring (9) is rotatably connected to a rotating plate (21) via a rotating assembly. The outer wall of the rotating plate (21) is fixedly fitted with bristles (22), which are arranged in a ring array. The rotating assembly includes a fourth gear (23) disposed inside the scraper ring (9), the fourth gear (23) meshing with the rotating plate (21), a fourth rotating shaft (24) fixedly mounted on the top of the fourth gear (23), a spiral groove (25) being provided inside the fourth rotating shaft (24), a sliding groove (26) being slidably connected inside the spiral groove (25), and the sliding groove (26) being fixedly installed inside the protective cover (5).

2. The drilling device for processing metal products with dust removal function according to claim 1, characterized in that: The protective cover (5) is slidably mounted on the outer wall of the outer shell (3).

3. The drilling device for processing metal products with dust removal function according to claim 1, characterized in that: The top of the protective cover (5) is fixedly connected to a guide rod (7). There are two guide rods (7) symmetrically arranged. Both guide rods (7) are slidably installed inside the outer shell (3). The outer walls of both guide rods (7) are provided with springs (8).

4. A drilling device for processing metal products with dust removal function according to claim 1, characterized in that: The outer wall of the scraper ring (9) slides against the inner wall of the dust collection plate (6).

5. A drilling device for processing metal products with dust removal function according to claim 1, characterized in that: The toothed block (18) is rotatably mounted inside the outer casing (3) via a third rotating shaft (19), and a torsion spring (20) is provided on the outer wall of the third rotating shaft (19).

6. A drilling device for processing metal products with dust removal function according to claim 5, characterized in that: A dust collection box (27) is installed at the bottom of the protective cover (5).

7. A drilling method for a drilling device with dust removal function for processing metal products, the method being applicable to the drilling device with dust removal function for processing metal products as described in claim 6, characterized in that, Includes the following steps: S1: When drilling a metal product, first place it on the top of the processing table (1) so that it is below the drill bit (4). Then, drive the outer shell (3) downward through the cylinder (2). The movement of the outer shell (3) drives the drill bit (4) to move down to drill the metal product. S2: At the same time, the outer shell (3) moves and drives the tooth block (18) to move downward. The inclined surface at the bottom of the tooth block (18) contacts the third gear (17) and rotates upward to the inside of the outer shell (3). The rotation of the tooth block (18) drives the rotation of the third rotating shaft (19). The rotation of the third rotating shaft (19) causes the torsion spring (20) to deform and store elastic potential energy. When the tooth block (18) separates from the third gear (17), the elastic potential energy is released through the torsion spring (20) to reset, so that the third gear (17) does not rotate. S3: When the outer shell (3) moves upward after drilling, the movement of the outer shell (3) drives the movement of the tooth block (18). The tooth block (18) meshes with the third gear (17) to make it rotate. The rotation of the third gear (17) drives the rotation of the second rotating shaft (16). The rotation of the second rotating shaft (16) drives the rotation of the second bevel gear (15). The rotation of the second bevel gear (15) drives the rotation of the first bevel gear (14). The rotation of the first bevel gear (14) drives the rotation of the first rotating shaft (13). The rotation of the first rotating shaft (13) drives the rotation of the second gear (12). The rotation of the second gear (12) drives the rotation of the first gear (11). When the first gear (11) rotates, it causes the reciprocating screw (10) to move downward. The movement of the reciprocating screw (10) drives the movement of the scraper ring (9), so that the scraper ring (9) scrapes off the metal dust adsorbed on the outer wall of the dust collection plate (6). S4: Simultaneously, the movement of the scraper ring (9) drives the movement of the rotating plate (21) and the fourth gear (23), and causes the fourth rotating shaft (24) to slide inside the outer shell (3). At the same time, the spiral groove (25) slides on the outer wall of the slide groove (26), and the fourth rotating shaft (24) rotates after being limited by it. The rotation of the fourth rotating shaft (24) drives the rotation of the fourth gear (23), the rotation of the fourth gear (23) drives the rotation of the rotating plate (21), and the rotation of the rotating plate (21) drives the rotation of the brush bristles (22), so that the brush bristles (22) rotate when cleaning the outer wall of the dust collection plate (6), and finally cleans the metal dust on the outer wall of the dust collection plate (6) into the dust collection box (27) for collection.

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