Self-cleaning drill bit and use method

Abstract

The present invention is applicable to the technical field of drilling tools and provides a self-cleaning drill bit and a method of use, including a pagoda drill body; a retaining frame is rotatably provided on the side surface of the connecting shaft; and also includes a protective part that slides with the retaining frame; a stepped guide part that is consistent with the structure of the pagoda drill body is slidably provided inside the fixed seat; a lifting plate is slidably provided on the inner wall of the storage box; a first cleaning part that is compatible with the conical spiral discharge groove and the conical spiral guide groove is slidably provided on the lifting plate and the inner wall; a second cleaning part that is compatible with the pagoda drill body is slidably provided on the inner wall of the storage box. The device controls the pagoda drill body to rotate slowly forward and backward, guides the first cleaning part through the conical spiral discharge groove and the conical spiral guide groove, drives the first cleaning part to rise and fall, and drives the cleaning sleeve to clean the dust and debris in the conical spiral discharge groove, thereby improving the cleaning efficiency and effect of the pagoda drill body.

Description

Technical Field

[0001] The present invention relates to the technical field of drilling tools, and more particularly to a self-cleaning drill bit and a use method thereof. Background Art

[0002] Drill bits are a common tool in daily life, primarily used in various industries such as machinery manufacturing. There are many types of drill bits, including the pagoda drill, also known as the step drill. This type of drill bit combines multiple diameters into one, with the diameter increasing gradually from the front end. One drill bit can replace multiple drill bits, producing holes of varying diameters as needed, improving production efficiency and meeting the requirements of modern advanced processing equipment.

[0003] In the existing technology, the dust and debris remaining on the conical spiral discharge trough and the surrounding side surfaces of the pagoda drill are mostly cleaned manually, and the cleaning effect is general, which reduces the cleaning efficiency of the pagoda drill. At the same time, the existing pagoda drill lacks a dust cleaning structure and cannot effectively remove dust during the drilling operation, which easily causes dust pollution in the working environment. Summary of the Invention

[0004] In response to the shortcomings of the prior art, the purpose of the present invention is to provide a self-cleaning drill bit and a method of use. By inverting and rotating the stepped guide part on a fixed seat, the pagoda drill body is controlled to slowly rotate forward and backward, and the first cleaning part is guided by the conical spiral discharge groove and the conical spiral guide groove to drive the first cleaning part to rise and fall, thereby driving the cleaning sleeve to clean the dust and debris in the conical spiral discharge groove, replacing the manual cleaning method, and improving the cleaning efficiency and effect of the pagoda drill body.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A self-cleaning drill bit comprises a pagoda drill body; a connecting shaft is fixedly installed on the top of the pagoda drill body; a retaining frame is rotatably provided on the circumferential side of the connecting shaft; and also comprises a protective part that slides with the retaining frame; the protective part comprises a protective tube and a storage box that are interconnected; a fixing seat is slidably provided on the bottom surface of the storage box; a stepped guide part that is consistent with the structure of the pagoda drill body is slidably provided inside the fixing seat; a conical spiral discharge groove and a conical spiral guide groove are respectively provided on the circumferential side surfaces of the pagoda drill body and the stepped guide part; a lifting plate is slidably provided on the inner wall of the storage box; a first cleaning part that is compatible with the conical spiral discharge groove and the conical spiral guide groove is slidably provided inside the lifting plate; a second cleaning part that is compatible with the pagoda drill body is slidably provided on the inner wall of the protective tube.

[0007] The present invention is further configured as follows: an outer annular groove is provided on the circumferential side of the connecting shaft; the retaining frame includes a retaining ring that rotatably cooperates with the outer annular groove; an L-shaped plate is symmetrically fixed on the circumferential side of the retaining ring; a guide sleeve that slides with the corresponding L-shaped plate is symmetrically fixed on the outer circumferential side of the protective tube; a support spring is fixedly connected between the inner bottom surface of the guide sleeve and the bottom of the L-shaped plate.

[0008] The present invention is further configured as follows: a sleeve that is plugged into and engaged with the connecting shaft is fixed on the top of the pagoda drill body; a flange is fixed on the circumferential side of the connecting shaft; the flange is fixedly installed on the top of the sleeve by fastening bolts; a hexagonal column that is snap-fitted with the output end of the external electric drill is fixed on the top of the connecting shaft; the output end of the external electric drill is adapted to be equipped with a magnetic hexagonal sleeve that is snap-fitted with the hexagonal column; a collection box is provided on the circumferential side of the protective tube near its bottom; one end of the collection box is opened, and an inclined plate is fixed to its inner bottom surface; a discharge pipe is provided on the inner bottom surface of the collection box; a sealing cover is screwed on the bottom of the discharge pipe; a negative pressure pipe is provided at the other end of the collection box; a filter is provided inside the negative pressure pipe.

[0009] The present invention is further configured as follows: a rotating shaft is fixed to the bottom of the stepped guide part; a ring rail is fixed to the peripheral side of the rotating shaft; an axial hole is provided inside the fixing seat to rotate with the rotating shaft; an inner ring groove is provided on the inner wall of the axial hole to rotate with the ring rail; and marking plates are fixed to the connecting shaft and the peripheral side of the stepped guide part.

[0010] The present invention is further configured as follows: slide rails are symmetrically fixed on both sides of the inner wall of the storage box; slide grooves that slide in cooperation with the corresponding slide rails are symmetrically opened on two opposite sides of the fixing seat; iron blocks are fixed on the side faces of the fixing seat; magnets are fixed on the inner wall of the storage box; insertion holes are opened on the inner wall of the slide groove; insertion rods that slide in cooperation with the insertion holes are symmetrically set through both sides of the inner wall of the storage box; blocks are fixed on the ends of the insertion rods; a return spring mounted on the corresponding insertion rod is fixedly connected between the block and the side face of the storage box.

[0011] The present invention is further configured as follows: a lifting groove connected to the storage box is provided on the peripheral side of the protective tube; limiting grooves are symmetrically provided on both sides of the inner wall of the lifting groove; the lifting plate is slidingly engaged with the lifting groove; limiting rails slidingly engaged with the limiting grooves are symmetrically fixed on the opposite sides of the lifting plate; a sliding hole is provided on the side of the lifting plate; and a guide groove is provided on the inner wall of the sliding hole.

[0012] The present invention is further configured as follows: the first cleaning part includes a sliding rod that slides with the sliding hole; a guide rail that slides with the guide groove is fixed to the side surface of the sliding rod; a first ball head that is adapted to the conical spiral guide groove is fixed to one end of the sliding rod; a connecting spring sleeved on the sliding rod is fixedly connected between the first ball head and the side surface of the lifting plate; a second ball head is fixed to the other end of the sliding rod; a cleaning sleeve is sleeved on the second ball head; the cleaning sleeve sleeved on the second ball head is adapted to the conical spiral discharge groove.

[0013] The present invention is further configured as follows: a U-shaped seat is fixed on the peripheral side of the protective tube; guide holes are symmetrically provided on the peripheral side of the protective tube on both sides of the U-shaped seat; the second cleaning part includes a stepped plate adapted to the pagoda drill body; a stepped cleaning sponge block is bonded to the side of the stepped plate; a U-shaped plate slidingly engaged with the two guide holes is fixed on the side of the stepped plate; screw holes are provided on the side of the U-shaped plate; a screw is rotatably provided on the side of the U-shaped seat to engage with the screw thread of the screw hole; an extension plate is fixed on the top of the stepped plate; positioning rods are symmetrically fixed to the extension plate; a positioning hole is provided on the side of the L-shaped plate to engage with the positioning rod.

[0014] A method for using a self-cleaning drill bit comprises the following steps:

[0015] T1. In the initial state, the positioning rod is separated from the positioning hole, and the stepped cleaning sponge is separated from the outer wall of the pagoda drill body; the insertion rod is separated from the insertion hole, and the magnet attracts the iron block, so that the fixed seat drives the stepped guide part to slide away from the pagoda drill body. Under the elastic reset force of the connecting spring, the sliding rod is driven to slide away from the pagoda drill body, so that the cleaning sleeve is separated from the conical spiral discharge groove; the support spring is in a normal state, and the pagoda drill body is stored in the protective tube;

[0016] T2. In the drilling state, insert the magnetic hexagonal sleeve at the output end of the external electric drill into the hexagonal column, place the protective tube flat on the surface of the plate to be drilled, and start the external electric drill to drive the connecting shaft and the pagoda drill body to rotate synchronously. At the same time, press the connecting shaft downward, so that the pagoda drill body rotates and descends, and the support spring is compressed to complete the drilling. During the drilling process, start the external exhaust fan to remove the air inside the collection box to form a negative pressure, thereby sucking the debris generated during the drilling process into the collection box;

[0017] T3. After drilling is completed, the pagoda drill body is stored in the protective tube to complete the reset. The fixing seat is pushed to drive the cleaning sleeve at the end of its first cleaning part to be inserted into the conical spiral discharge groove, and then the fixing seat is fixed; the screw is rotated to drive the stepped cleaning sponge block on the second cleaning part to slide against the outer peripheral side of the pagoda drill body. At this time, the positioning rod is inserted into the positioning hole, completing the preparation work before cleaning;

[0018] T4. Control the external electric drill to drive the pagoda drill body to rotate slowly forward and backward. The dust and debris on the side of the pagoda drill body are cleaned away by the stepped cleaning sponge block. At the same time, the first cleaning part is guided by the conical spiral discharge trough and the conical spiral guide groove, so that the first cleaning part performs reciprocating lifting motion, and the cleaning sleeve cleans the dust and debris inside the conical spiral discharge trough.

[0019] The advantages of the present invention are:

[0020] The present invention controls the pagoda drill body to slowly rotate forward and backward by inverting and rotating the stepped guide part on a fixed seat, and guides the first cleaning part through the conical spiral discharge groove and the conical spiral guide groove, thereby driving the first cleaning part to rise and fall, thereby driving the cleaning sleeve to clean the dust and debris in the conical spiral discharge groove, replacing the manual cleaning method, and improving the cleaning efficiency and effect of the pagoda drill body.

[0021] The present invention controls the second cleaning part to move closer to the pagoda drill body so that the stepped cleaning sponge block abuts against the peripheral side surface of the pagoda drill body. At this time, the positioning rod is inserted into the corresponding positioning hole, so that the pagoda drill body can only rotate but not rise and fall during the cleaning process, thereby ensuring the stability of the pagoda drill body during the cleaning process. The stepped cleaning sponge block cleans the dust and debris on the peripheral side surface of the slowly rotating pagoda drill body, further improving the cleaning efficiency and effect of the pagoda drill body.

[0022] During the drilling process of the present invention, the external exhaust fan is started to extract the air inside the collection box to form a negative pressure, thereby sucking the dust and debris generated during the drilling process into the collection box, thereby removing the dust and debris during the drilling operation, avoiding dust pollution to the environment, and at the same time, reducing the difficulty of collecting the debris generated during the drilling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a self-cleaning drill bit of the present invention.

[0024] Figure 2 For the present invention Figure 1 Schematic diagram of the structure from an upward perspective.

[0025] Figure 3 For the present invention Figure 1 Partial cross-section view from the official perspective.

[0026] Figure 4 It is a structural schematic diagram of the pagoda drill body and the connecting shaft assembly of the present invention.

[0027] Figure 5 It is a structural schematic diagram of the protection part of the present invention.

[0028] Figure 6It is a cross-sectional view of the protection portion of the present invention.

[0029] Figure 7 Schematic diagram of the structure of the retainer of the present invention.

[0030] Figure 8 It is a structural schematic diagram of the stepped guide portion of the present invention.

[0031] Figure 9 It is a structural schematic diagram of the first cleaning part of the present invention.

[0032] Figure 10 Schematic diagram of the structure of the second cleaning part of the present invention.

[0033] Figure 11 It is a structural schematic diagram of the fixing seat of the present invention.

[0034] Figure 12 It is a structural schematic diagram of the lifting plate of the present invention.

[0035] In the figure: 1. Pagoda drill body; 2. Connecting shaft; 3. Retaining frame; 4. Protective part; 5. Protective tube; 6. Storage box; 7. Fixed seat; 8. Stepped guide part; 9. Conical spiral discharge trough; 10. Conical spiral guide groove; 11. Lifting plate; 12. First cleaning part; 13. Second cleaning part; 14. Outer annular groove; 15. Retaining ring; 16. L-shaped plate; 17. Guide sleeve; 18. Support spring; 19. Sleeve; 20. Flange; 21. Hexagonal column; 22. Collecting box; 23. Inclined plate; 24. Discharge pipe; 25. Negative pressure pipe; 26. Rotating shaft; 27. Annular rail; 28. Shaft hole; 29. ​​Inner ring shaped groove; 30, slide rail; 31, slide groove; 32, iron block; 33, socket; 34, plug rod; 35, stop block; 36, return spring; 37, lifting groove; 38, limit groove; 39, limit rail; 40, slide hole; 41, guide groove; 42, slide rod; 43, guide rail; 44, first ball head; 45, connecting spring; 46, second ball head; 47, cleaning sleeve; 48, U-shaped seat; 49, guide hole; 50, stepped plate; 51, stepped cleaning sponge block; 52, U-shaped plate; 53, screw hole; 54, screw; 55, extension plate; 56, positioning rod; 57, positioning hole; 58, marking plate; 59, magnet. DETAILED DESCRIPTION

[0036] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0037] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0038] In the present invention, unless otherwise specified, directions such as "up" and "down" are generally used with respect to the directions shown in the drawings, or with respect to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" are generally used with respect to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0039] For example 1, please refer to Figure 1-12 , the present invention provides the following technical solutions:

[0040] A self-cleaning drill bit, specifically, includes a pagoda drill body 1; a connecting shaft 2 is fixedly installed on the top of the pagoda drill body 1; a retaining frame 3 is rotatably provided on the side of the connecting shaft 2; it also includes a protective part 4 that slides with the retaining frame 3; the protective part 4 includes a protective tube 5 and a storage box 6 that are interconnected; a fixing seat 7 is slidably provided on the bottom surface of the storage box 6; a stepped guide part 8 that is consistent with the structure of the pagoda drill body 1 is slidably provided inside the fixing seat 7; a conical spiral discharge groove 9 and a conical spiral guide groove 10 are respectively provided on the sides of the pagoda drill body 1 and the stepped guide part 8; a lifting plate 11 is slidably provided on the inner wall of the storage box 6; a first cleaning part 12 that is compatible with the conical spiral discharge groove 9 and the conical spiral guide groove 10 is slidably provided inside the lifting plate 11; a second cleaning part 13 that is compatible with the pagoda drill body 1 is slidably provided through the inner wall of the protective tube 5.

[0041] Working principle of this embodiment 1:

[0042] By rotating the stepped guide part 8 upside down and setting it on the fixed seat 7, the pagoda drill body 1 is controlled to rotate slowly forward and backward, and the first cleaning part 12 is guided by the conical spiral discharge groove 9 and the conical spiral guide groove 10, the first cleaning part 12 is driven to rise and fall, thereby driving the cleaning sleeve 47 to clean the dust and debris in the conical spiral discharge groove 9, replacing the manual cleaning method, thereby improving the cleaning efficiency and effect of the pagoda drill body 1.

[0043] The stepped cleaning sponge block 51 on the second cleaning part 13 cleans the dust and debris on the side surface of the slowly rotating pagoda drill body 1, further improving the cleaning efficiency and effect of the pagoda drill body 1.

[0044] For example 2, please refer to Figure 1-12, this embodiment 2 makes the following improvements on the basis of embodiment 1. Specifically, an outer annular groove 14 is opened on the side surface of the connecting shaft 2; the retaining frame 3 includes a retaining ring 15 that rotates with the outer annular groove 14; L-shaped plates 16 are symmetrically fixed to the side surfaces of the retaining ring 15; guide sleeves 17 that slide with the corresponding L-shaped plates 16 are symmetrically fixed to the outer side surfaces of the protective tube 5; a support spring 18 is fixedly connected between the inner bottom surface of the guide sleeve 17 and the bottom of the L-shaped plate 16.

[0045] A sleeve 19 that is plugged into the connecting shaft 2 is fixed to the top of the pagoda drill body 1; a flange 20 is fixed to the side of the connecting shaft 2; the flange 20 is fixed to the top of the sleeve 19 by fastening bolts; a hexagonal column 21 that is snap-fitted to the output end of the external electric drill is fixed to the top of the connecting shaft 2; the output end of the external electric drill is equipped with a magnetic hexagonal sleeve that is snap-fitted to the hexagonal column 21.

[0046] A collecting box 22 is provided on the side surface of the protective tube 5 near its bottom; one end of the collecting box 22 is open, and an inclined plate 23 is fixed on its inner bottom surface; a discharge pipe 24 is provided on the inner bottom surface of the collecting box 22; a sealing cover is screwed on the bottom of the discharge pipe 24; a negative pressure pipe 25 is provided on the other end of the collecting box 22; a filter is provided inside the negative pressure pipe 25.

[0047] A rotating shaft 26 is fixed to the bottom of the stepped guide part 8; a ring rail 27 is fixed to the side surface of the rotating shaft 26; an axial hole 28 is provided inside the fixed seat 7 to rotate with the rotating shaft 26; an inner annular groove 29 is provided on the inner wall of the axial hole 28 to rotate with the ring rail 27; and a marking plate 58 is fixed to the connecting shaft 2 and the side surface of the stepped guide part 8.

[0048] Slide rails 30 are symmetrically fixed on both sides of the inner wall of the storage box 6; slide grooves 31 that slide with the corresponding slide rails 30 are symmetrically opened on the opposite sides of the fixing seat 7; iron blocks 32 are fixed to the side of the fixing seat 7; a magnet 59 is fixed to the inner wall of the storage box 6; a socket 33 is opened on the inner wall of the slide groove 31; plug rods 34 that slide and engage with the socket 33 are symmetrically set on both sides of the inner wall of the storage box 6 for sliding; a stopper 35 is fixed to the end of the plug rod 34; a return spring 36 mounted on the corresponding plug rod 34 is fixed between the stopper 35 and the side of the storage box 6.

[0049] A lifting groove 37 connected to the storage box 6 is provided on the side surface of the protective tube 5; limiting grooves 38 are symmetrically provided on both sides of the inner wall of the lifting groove 37; the lifting plate 11 slides in cooperation with the lifting groove 37; limiting rails 39 that slide in cooperation with the limiting groove 38 are symmetrically fixed on the opposite sides of the lifting plate 11; a sliding hole 40 is provided on the side surface of the lifting plate 11; and a guide groove 41 is provided on the inner wall of the sliding hole 40.

[0050] The first cleaning part 12 includes a sliding rod 42 that slides with the sliding hole 40; a guide rail 43 that slides with the guide groove 41 is fixed to the side surface of the sliding rod 42; a first ball head 44 that is adapted to the conical spiral guide groove 10 is fixed to one end of the sliding rod 42; a connecting spring 45 that is sleeved on the sliding rod 42 is fixedly connected between the first ball head 44 and the side of the lifting plate 11; a second ball head 46 is fixed to the other end of the sliding rod 42; a cleaning sleeve 47 is sleeved on the second ball head 46; the cleaning sleeve 47 sleeved on the second ball head 46 is adapted to the conical spiral discharge groove 9.

[0051] A U-shaped seat 48 is fixed on the side of the protective tube 5; guide holes 49 are symmetrically provided on both sides of the U-shaped seat 48 on the side of the protective tube 5; the second cleaning part 13 includes a stepped plate 50 adapted to the pagoda drill body 1; a stepped cleaning sponge block 51 is bonded to the side of the stepped plate 50; a U-shaped plate 52 slidingly engaged with the two guide holes 49 is fixed on the side of the stepped plate 50; a screw hole 53 is provided on the side of the U-shaped plate 52; a screw 54 is rotatably provided on the side of the U-shaped seat 48 for threaded rotation with the screw hole 53; an extension plate 55 is fixed on the top of the stepped plate 50; a positioning rod 56 is symmetrically fixed to the extension plate 55; a positioning hole 57 is provided on the side of the L-shaped plate 16 for plugging and engaging with the positioning rod 56.

[0052] Working principle of the second embodiment:

[0053] In the initial state, the support spring 18 is in a normal state, the pagoda drill body 1 is stored in the protective tube 5, the magnet 59 attracts the iron block 32, and the stepped guide part 8 is away from the pagoda drill body 1. Under the elastic force of the connecting spring 45, the first ball head 44 is driven to abut against the conical spiral guide groove 10. At this time, the cleaning sleeve 47 on the second ball head 46 is disengaged from the conical spiral discharge groove 9, and the pagoda drill body 1 can rotate with the rotation of the connecting shaft 2. At the same time, the pagoda drill body 1 can rise and fall with the lifting and lowering of the connecting shaft 2, thereby realizing the drilling of the plate by the pagoda drill body 1. During the drilling process, the external exhaust fan is started to suck the dust and debris generated during the drilling process into the collection box 22. The dust and debris enter the collection box 22 along the inclined plate 23. The filter screen filters the dust and debris to avoid dust pollution to the environment. After the drilling is completed, the external exhaust fan is turned off. Under the action of gravity, most of the dust and debris fall into the collection box 22 and are collected, which reduces the difficulty of collecting the dust and debris generated during the drilling process.

[0054] After the drilling is completed, the drill body 1 is taken out from the drill hole. When the drill body 1 is reset and stored inside the protective tube 5, the positioning rod 56 is coaxially arranged with the corresponding positioning hole 57. The rotating screw 54 drives the U-shaped plate 52 to move along the guide hole 49 toward the direction close to the drill body 1. During this process, the positioning rod 56 is inserted into the corresponding positioning hole 57 to ensure that during the cleaning of the drill body 1, the drill body 1 can only rotate but not move up and down, thereby ensuring the stability of the cleaning process of the drill body 1. When the stepped cleaning sponge block 51 abuts against the outer peripheral side of the drill body 1, the screw 54 is stopped, and the installation of the second cleaning part 13 and the drill body 1 is completed.

[0055] Observe the marking plate 58 on the connecting shaft 2 and the stepped guide part 8 to ensure that the two are pointing in the same direction, push the stepped guide part 8 in the direction close to the pagoda drill body 1, and the other end of the rod 34 is fixed with a hemispherical head. The hemispherical head at the end of the rod 34 is always placed on the inner wall of the slide groove 31 to slide, and the return spring 36 is in a compressed state. When the socket 33 and the rod 34 are coaxial, the elastic force of the return spring 36 drives the rod 34 to be inserted into the socket 33, thereby achieving fixed limit of the fixing seat 7 and the storage box 6. In this process, the stepped guide part 8 squeezes the first cleaning part 12 , the connecting spring 45 is compressed, and the cleaning sleeve 47 on the second ball head 46 is inserted into the conical spiral discharge trough 9. By controlling the pagoda drill body 1 to slowly and periodically rotate forward and reverse, the first cleaning part 12 is driven to slide back and forth along the lifting plate 11 while performing a lifting motion. When the pagoda drill body 1 rotates clockwise, the first cleaning part 12 is driven to rise, and it slides along the lifting plate 11 in the direction away from the pagoda drill body 1. When the pagoda drill body 1 rotates counterclockwise, it drives the first cleaning part 12 to descend, and it slides along the lifting plate 11 in the direction close to the pagoda drill body 1.

[0056] The dust and debris on the side of the pagoda drill body 1 are cleaned up by the stepped cleaning sponge block 51, and the cleaning sleeve 47 cleans the dust and debris inside the conical spiral discharge trough 9.

[0057] A method for using a self-cleaning drill bit comprises the following steps:

[0058] T1. In the initial state, the positioning rod 56 is disengaged from the positioning hole 57, and the stepped cleaning sponge block 51 is disengaged from the outer wall of the pagoda drill body 1; the insertion rod 34 is disengaged from the insertion hole 33, and the magnet 59 attracts the iron block 32, so that the fixed seat 7 drives the stepped guide part 8 to slide in the direction away from the pagoda drill body 1, and under the elastic reset force of the connecting spring 45, the slide rod 42 is driven to slide in the direction away from the pagoda drill body 1, so that the cleaning sleeve 47 is disengaged from the conical spiral discharge trough 9; the support spring 18 is in a normal state, and the pagoda drill body 1 is stored inside the protective tube 5.

[0059] T2. In the drilling state, by inserting the magnetic hexagonal sleeve at the output end of the external electric drill into the hexagonal column 21, the protective tube 5 is placed flat on the surface of the plate to be drilled, and the external electric drill is controlled to start to drive the connecting shaft 2 and the pagoda drill body 1 to rotate synchronously. At the same time, the connecting shaft 2 is pressed downward to make the pagoda drill body 1 rotate and descend at the same time, and the support spring 18 is compressed to complete the drilling. During the drilling process, the external exhaust fan is started to extract the air inside the collection box 22 to form a negative pressure, thereby sucking the debris generated during the drilling process into the collection box 22.

[0060] T3. After drilling is completed, the pagoda drill body 1 is stored in the protective tube 5 to complete the reset, and the fixed seat 7 is pushed to drive the cleaning sleeve 47 at the end of its first cleaning part 12 to be inserted into the conical spiral discharge groove 9, and then the fixed seat 7 is fixed; the screw 54 is rotated to drive the stepped cleaning sponge block 51 on the second cleaning part 13 to slide against the outer peripheral side of the pagoda drill body 1. At this time, the positioning rod 56 is inserted into the positioning hole 57 to complete the preparation work before cleaning.

[0061] T4. Control the external electric drill to drive the pagoda drill body 1 to rotate slowly forward and backward. The dust and debris on the side of the pagoda drill body 1 are cleaned away by the stepped cleaning sponge block 51. At the same time, the first cleaning part 12 is guided by the conical spiral discharge groove 9 and the conical spiral guide groove 10, so that the first cleaning part 12 performs reciprocating lifting motion, so that the cleaning sleeve 47 cleans the dust and debris inside the conical spiral discharge groove 9.

[0062] Obviously, the embodiments described above are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0063] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0064] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0065] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

[0066] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A self-cleaning drill bit, comprising a pagoda drill body (1); characterized in that: A connecting shaft (2) is fixedly mounted on the top of the pagoda drill body (1); a retaining frame (3) is rotatably arranged on the side surface of the connecting shaft (2); It also includes a protective portion (4) that is slidably engaged with the retaining frame (3); the protective portion (4) includes a protective tube (5) and a storage box (6) that are interconnected; A fixed seat (7) is slidably provided on the inner bottom surface of the storage box (6); a stepped guide portion (8) having the same structure as the pagoda drill body (1) is slidably provided inside the fixed seat (7); a conical spiral discharge groove (9) and a conical spiral guide groove (10) are respectively provided on the circumferential side surfaces of the pagoda drill body (1) and the stepped guide portion (8); The inner wall of the storage box (6) is provided with a lifting plate (11) which is slidably mounted thereon; a first cleaning portion (12) which is adapted to the conical spiral discharge groove (9) and the conical spiral guide groove (10) is slidably mounted therein; a second cleaning portion (13) which is adapted to the pagoda drill body (1) is slidably mounted thereon through the inner wall of the protective tube (5); An outer annular groove (14) is formed on the peripheral side surface of the connecting shaft (2); the retaining frame (3) includes a retaining ring (15) rotatably engaged with the outer annular groove (14); an L-shaped plate (16) is symmetrically fixed to the peripheral side surface of the retaining ring (15); a guide sleeve (17) is symmetrically fixed to the peripheral side surface of the protective tube (5) and is slidably engaged with the corresponding L-shaped plate (16); a support spring (18) is fixedly connected between the inner bottom surface of the guide sleeve (17) and the bottom of the L-shaped plate (16); The lifting plate (11) is provided with a sliding hole (40) on the side surface; a guide groove (41) is provided on the inner wall of the sliding hole (40); the first cleaning part (12) includes a sliding rod (42) that is slidably matched with the sliding hole (40); a guide rail (43) that is slidably matched with the guide groove (41) is fixed to the peripheral side surface of the sliding rod (42); a first ball head (44) that is adapted to the conical spiral guide groove (10) is fixed to one end of the sliding rod (42); a connecting spring (45) that is sleeved on the sliding rod (42) is fixedly connected between the first ball head (44) and the side surface of the lifting plate (11); a second ball head (46) is fixed to the other end of the sliding rod (42); a cleaning sleeve (47) is sleeved on the second ball head (46); the cleaning sleeve (47) sleeved on the second ball head (46) is adapted to the conical spiral discharge groove (9); A U-shaped seat (48) is fixed to the side surface of the protective tube (5); guide holes (49) are symmetrically opened on both sides of the U-shaped seat (48) on the side surface of the protective tube (5); the second cleaning part (13) includes a stepped plate (50) adapted to the pagoda drill body (1); a stepped cleaning sponge block (51) is bonded to the side surface of the stepped plate (50); a U-shaped plate (52) that slides with the two guide holes (49) is fixed to the side surface of the stepped plate (50); a screw hole (53) is opened on the side surface of the U-shaped plate (52); a screw rod (54) that is rotatably matched with the screw hole (53) is rotatably set on the side surface of the U-shaped seat (48); an extension plate (55) is fixed to the top of the stepped plate (50); a positioning rod (56) is symmetrically fixed to the extension plate (55); a positioning hole (57) that plugs and fits with the positioning rod (56) is opened on the side surface of the L-shaped plate (16).

2. A self-cleaning drill bit according to claim 1, characterized in that: The top of the pagoda drill body (1) is fixed with a sleeve (19) that is plug-fitted with the connecting shaft (2); the peripheral side of the connecting shaft (2) is fixed with a flange (20); the flange (20) is fixedly mounted on the top of the sleeve (19) by fastening bolts; the top of the connecting shaft (2) is fixed with a hexagonal column (21) that is snap-fitted with the output end of the external electric drill; the output end of the external electric drill is adapted to be equipped with a magnetic hexagonal sleeve that is snap-fitted with the hexagonal column (21); A collecting box (22) is provided on the peripheral side of the protective tube (5) near its bottom; one end of the collecting box (22) is opened, and an inclined plate (23) is fixed on its inner bottom surface; a discharge pipe (24) is provided on the inner bottom surface of the collecting box (22); a sealing cover is screwed on the bottom of the discharge pipe (24); a negative pressure pipe (25) is provided on the other end of the collecting box (22); a filter is provided inside the negative pressure pipe (25).

3. A self-cleaning drill bit according to claim 2, characterized in that: A rotating shaft (26) is fixed to the bottom of the stepped guide portion (8); a circular rail (27) is fixed to the peripheral side of the rotating shaft (26); an axial hole (28) is provided inside the fixing seat (7) for rotationally cooperating with the rotating shaft (26); an inner annular groove (29) is provided on the inner wall of the axial hole (28) for rotationally cooperating with the circular rail (27); and a marking plate (58) is fixed to the peripheral side of the connecting shaft (2) and the stepped guide portion (8).

4. A self-cleaning drill bit according to claim 3, characterized in that: Slide rails (30) are symmetrically fixed on both sides of the inner wall of the storage box (6); slide grooves (31) that slide with the corresponding slide rails (30) are symmetrically opened on the opposite sides of the fixing seat (7); an iron block (32) is fixed on the side of the fixing seat (7); a magnet (59) is fixed on the inner wall of the storage box (6); a socket (33) is opened on the inner wall of the slide groove (31); a plug rod (34) that plugs with the socket (33) is symmetrically set through both sides of the inner wall of the storage box (6); a stopper (35) is fixed at the end of the plug rod (34); a return spring (36) that is sleeved on the corresponding plug rod (34) is fixed between the stopper (35) and the side of the storage box (6).

5. The self-cleaning drill bit according to claim 4, characterized in that: The protective tube (5) is provided with a lifting groove (37) connected to the storage box (6) on the peripheral side; the inner wall of the lifting groove (37) is symmetrically provided with limiting grooves (38); the lifting plate (11) is slidably engaged with the lifting groove (37); and limiting rails (39) slidably engaged with the limiting grooves (38) are symmetrically fixed on the two opposite sides of the lifting plate (11).

6. The method for using a self-cleaning drill bit according to claim 5, characterized in that: The following steps are involved: T1. In the initial state, the positioning rod (56) is separated from the positioning hole (57), and the stepped cleaning sponge block (51) is separated from the outer wall of the pagoda drill body (1); the insertion rod (34) is separated from the insertion hole (33), and the magnet (59) attracts the iron block (32), so that the fixed seat (7) drives the stepped guide part (8) to slide in the direction away from the pagoda drill body (1), and under the elastic reset force of the connecting spring (45), the sliding rod (42) is driven to slide in the direction away from the pagoda drill body (1), so that the cleaning sleeve (47) is separated from the conical spiral discharge groove (9); the support spring (18) is in a normal state, and the pagoda drill body (1) is stored in the protective tube (5); T2, in the drilling state, by inserting the magnetic hexagonal sleeve at the output end of the external electric drill into the hexagonal column (21), the protective tube (5) is placed flat on the surface of the plate to be drilled, and the external electric drill is controlled to start to drive the connecting shaft (2) and the pagoda drill body (1) to rotate synchronously. At the same time, the connecting shaft (2) is pressed downward, so that the pagoda drill body (1) rotates and descends, and the support spring (18) is compressed to complete the drilling. During the drilling process, the external exhaust fan is started to remove the air inside the collection box (22) to form a negative pressure, thereby sucking the debris generated during the drilling process into the collection box (22); T3. After the drilling is completed, the pagoda drill body (1) is stored in the protective tube (5) to complete the reset, and the fixed seat (7) is pushed to drive the cleaning sleeve (47) at the end of its first cleaning part (12) to be inserted into the conical spiral discharge groove (9), and then the fixed seat (7) is fixed; the screw (54) is rotated to drive the stepped cleaning sponge block (51) on the second cleaning part (13) to slide against the outer peripheral side of the pagoda drill body (1). At this time, the positioning rod (56) is inserted into the positioning hole (57), completing the preparation work before cleaning; T4. Control the external electric drill to drive the pagoda drill body (1) to rotate slowly forward and backward, and the dust and debris on the side surface of the pagoda drill body (1) are cleaned away by the stepped cleaning sponge block (51). At the same time, the first cleaning part (12) is guided by the conical spiral discharge groove (9) and the conical spiral guide groove (10), so that the first cleaning part (12) performs a reciprocating lifting motion, so that the cleaning sleeve (47) cleans the dust and debris inside the conical spiral discharge groove (9).

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