High speed steel twist drill with fly dust prevention

Abstract

The utility model discloses a high speed steel twist drill of preventing flying dust, including drill head, the fixed sleeve is sleeved on the drill head, the fixed sleeve is equipped with the set screw, the fixed sleeve outside is connected with the connecting block through the pivot swing, and is equipped with the torsional spring at the junction of connecting block and fixed sleeve, the torsional spring acts between connecting block and fixed sleeve, the connecting block is fixed with the rotary lever, the rotary lever is fixed with the protective net, the rotary lever's outside is sleeved with the limit sleeve and the connecting sleeve, the limit sleeve and the connecting sleeve integration are established, the connecting sleeve lower extreme is sleeved in the outside of connecting block. This high speed steel twist drill of preventing flying dust is provided with the rotary lever that can unfold, and is provided with the protective net between the rotary lever, can form the protective cover structure in the periphery of high speed steel twist drill, can effectively block the splashing of waste debris flying dust in the drilling work process, guarantees the normal safe operation of drilling work.

Description

Technical Field

[0001] This utility model relates to the field of twist drill technology, specifically a high-speed steel twist drill that is dustproof. Background Technology

[0002] High-speed steel twist drills are a common type of hardware tool widely used in drilling operations. Ordinary high-speed steel twist drills are made of high-speed steel, a material with extremely high hardness and wear resistance, enabling them to easily drill holes in various hard materials and offering a longer service life.

[0003] During the use of high-speed steel twist drills, the drilling process generates waste debris and dust. Since the high-speed steel twist drill rotates at high speed during drilling, it is easy for waste debris and dust to fly around, affecting the operator's normal drilling work. Therefore, we have proposed a dust-proof high-speed steel twist drill to solve the problems mentioned above. Utility Model Content

[0004] The purpose of this invention is to provide a dust-proof high-speed steel twist drill to solve the problems currently found in the market as described in the background.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-speed steel twist drill for preventing flying dust, comprising a drill bit, a fixed sleeve fitted onto the drill bit, a positioning bolt threaded onto the fixed sleeve, a connecting block movably connected to the outside of the fixed sleeve via a pin, and a torsion spring provided at the connection between the connecting block and the fixed sleeve, the torsion spring acting between the connecting block and the fixed sleeve, a rotating rod fixed on the connecting block, a protective net fixed on the rotating rod, a limiting sleeve and a connecting sleeve fitted onto the outside of the rotating rod, the limiting sleeve and the connecting sleeve being integrally formed, the lower end of the connecting sleeve fitted onto the outside of the connecting block, and the connecting sleeve and the connecting block being threadedly connected.

[0006] Preferably, the inner end of the positioning bolt is in contact with the drill bit, and the position of the fixing sleeve on the drill bit is fixed by the positioning bolt.

[0007] Preferably, the connecting block and the rotating rod are integrated, and three sets of the connecting block and the rotating rod are symmetrically arranged about the center of the fixed sleeve.

[0008] Preferably, the connecting block and the rotating rod always rotate outward under the action of the torsion spring, and the protective net is fixed between adjacent rotating rods. The protective net is synchronously formed into an unfolded state through the outward opening state of the rotating rod.

[0009] Preferably, the rotating rod and the protective net form a triangular pyramid-shaped cover structure on the outside of the drill bit, and the position of the rotating rod and the protective net on the drill bit can be changed by a fixing sleeve.

[0010] Preferably, the inner diameter of the connecting block and the rotating rod is equal to the outer diameter of the drill bit, the outer diameter of the connecting block is equal to the inner diameter of the connecting sleeve, and the outer diameter of the rotating rod is equal to the inner diameter of the limiting sleeve.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] (1) The dust-proof high-speed steel twist drill is equipped with an expandable rotating rod, and a protective net is installed between the rotating rods. It can form a protective cover structure around the high-speed steel twist drill, which can effectively block the splashing of waste debris and dust during the drilling process, and ensure the normal and safe operation of the drilling work.

[0013] (2) A limit sleeve and a connecting sleeve are also provided on the outside of the rotating rod. The limit sleeve can stably fit the rotating rod against the outside of the drill bit, and the connecting sleeve is threadedly connected to the connecting block to ensure the stable working state of the limit sleeve. This can effectively protect the drill bit, strengthen the outer strength of the drill bit, and fix the position of the sleeve on the drill bit. It can also limit the working position of the drill bit, making it convenient to adjust the working feed and output of the drill bit, and effectively improve the functionality of the high-speed steel twist drill. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0016] Figure 3 This is a schematic diagram of the retractable structure of the rotating rod of this utility model;

[0017] Figure 4 This utility model Figure 3 Schematic diagram of the structure at point A in the middle;

[0018] Figure 5 This is a schematic cross-sectional view of the limiting sleeve of this utility model;

[0019] Figure 6 This is a schematic diagram of the unfolded structure of the rotating rod of this utility model;

[0020] Figure 7 This is a schematic diagram of the unfolded structure of the rotating rod of this utility model.

[0021] In the diagram: 1. Drill bit; 2. Fixing sleeve; 3. Positioning bolt; 4. Connecting block; 5. Torsion spring; 6. Rotating rod; 7. Limiting sleeve; 8. Connecting sleeve; 9. Protective net. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 This utility model provides a technical solution: a high-speed steel twist drill that prevents flying dust, including a drill bit 1, a fixing sleeve 2 sleeved on the drill bit 1, and a positioning bolt 3 threaded on the fixing sleeve 2.

[0024] Furthermore, the inner end of the positioning bolt 3 is in contact with the drill bit 1, and the position of the fixing sleeve 2 on the drill bit 1 is fixed by the positioning bolt 3, which can ensure the stable working state of the fixing sleeve 2 on the outside of the drill bit 1, and also facilitate the adjustment of the working position of the fixing sleeve 2 on the outside of the drill bit 1.

[0025] A connecting block 4 is movably connected to the outside of the fixed sleeve 2 via a pin, and a torsion spring 5 is provided at the connection between the connecting block 4 and the fixed sleeve 2. The torsion spring 5 acts between the connecting block 4 and the fixed sleeve 2. A rotating rod 6 is fixed on the connecting block 4, and a protective net 9 is fixed on the rotating rod 6.

[0026] Furthermore, the protective net 9 is made of high-strength polyester fiber flexible net, which not only ensures the strength of the protective net 9, but also enables the protective net 9 to be folded and retracted, so that the protective net 9 can be stored in conjunction with the rotating rod 6.

[0027] Furthermore, the connecting block 4 and the rotating rod 6 are integrated to ensure a stable working state for the connecting block 4 and the rotating rod 6. The connecting block 4 and the rotating rod 6 are arranged in three sets symmetrically about the center of the fixed sleeve 2, which can form a complete surrounding structure on the outside of the drill bit 1 to ensure the protective effect on the drill bit 1.

[0028] Furthermore, the connecting block 4 and the rotating rod 6 always rotate outward under the action of the torsion spring 5, so that the connecting block 4 and the rotating rod 6 are always in the open state on the fixed sleeve 2 through the torsion spring 5, and the protective net 9 is fixed between adjacent rotating rods 6. The protective net 9 is synchronously formed in the outward opening state through the rotating rod 6 to ensure the stable working state of the protective net 9. At the same time, during the rotation of the drill bit, the rotating rod 6 also rotates and is subjected to centrifugal force. Under the pulling action of the protective net 9, the protective cover structure composed of the rotating rod 6 can be guaranteed to work stably and normally.

[0029] Furthermore, the rotating rod 6 and the protective net 9 form a triangular pyramid-shaped cover structure on the outside of the drill bit 1, which constitutes a stable protective structure on the outside of the drill bit 1. The positions of the rotating rod 6 and the protective net 9 on the drill bit 1 can be changed by the fixing sleeve 2, so that the protective structure can be adapted to the working length of the drill bit 1.

[0030] A limiting sleeve 7 and a connecting sleeve 8 are sleeved on the outer side of the rotating rod 6. The limiting sleeve 7 and the connecting sleeve 8 are integrated. The lower end of the connecting sleeve 8 is sleeved on the outer side of the connecting block 4, and the connecting sleeve 8 and the connecting block 4 are connected by threads.

[0031] Furthermore, the inner diameters of the connecting block 4 and the rotating rod 6 are equal to the outer diameter of the drill bit 1, ensuring that the connecting block 4 and the rotating rod 6 fit snugly against the outside of the drill bit 1. The outer diameter of the connecting block 4 is equal to the inner diameter of the connecting sleeve 8, and the outer diameter of the rotating rod 6 is equal to the inner diameter of the limiting sleeve 7, ensuring that the connecting block 4 and the rotating rod 6 fit tightly against the inner sides of the connecting sleeve 8 and the limiting sleeve 7. In general, the connecting block 4 and the rotating rod 6 are stably connected to the outside of the drill bit 1 through the connecting sleeve 8 and the limiting sleeve 7, thereby increasing the working strength of the drill bit 1.

[0032] Specifically, when using this dust-proof high-speed steel twist drill, first, the fixing sleeve 2 is fitted onto the drill bit 1, then the drill bit 1 is installed on the drilling machine. The limiting sleeve 7 and the connecting sleeve 8 are rotated off. Under the action of the torsion spring 5, the connecting block 4 rotates outward on the fixing sleeve 2 along with the rotating rod 6, so that the rotating rod 6 is in an open state. The protective net 9 between the rotating rods 6 is simultaneously pulled open into a flat state. At the same time, the protective net 9 can also pull the rotating rod 6 to maintain a stable open state.

[0033] When the rotating rod 6 is opened, it will form a stable protective cover structure on the outside of the drill bit 1 together with the protective net 9. When the drill bit 1 rotates to drill, the rotating rod 6 will rotate accordingly. Under the action of centrifugal force, the protective net 9 will pull and limit the rotating rod 6, which can ensure that the rotating rod 6 and the protective net 9 form a stable protective structure, blocking the debris and dust generated during the drilling process, and preventing debris and dust from flying and affecting the normal operation of the workers.

[0034] When drilling work does not require protection, the rotating rod 6 can be manually retracted and the limiting sleeve 7 can be sleeved on the outside of the rotating rod 6. The protective net 9 is stored between the rotating rods 6. The limiting sleeve 7 is sleeved on the outside of the rotating rod 6, and the threaded connection between the connecting sleeve 8 and the connecting block 4 ensures the stable working state of the limiting sleeve 7. This can form a sleeve structure on the outside of the drill bit 1 to strengthen the working strength of the drill bit 1.

[0035] At the same time, by adjusting the displacement of the fixed sleeve 2, the length of the working end of the drill bit 1 exposed outside the limiting sleeve 7 is adjusted to adjust the working length of the drill bit 1. The limiting sleeve 7 can also play a limiting role. After the drill bit 1 is removed and not in use, the limiting sleeve 7 can be moved by the fixed sleeve 2 to cover the working end of the drill bit 1, completely protecting the working end of the drill bit 1 and ensuring the safety of the drill bit 1.

[0036] The above describes the high-speed steel twist drill. Any content not described in detail in this specification is existing technology known to those skilled in the art.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dust-proof high-speed steel twist drill, comprising a drill bit (1), characterized in that: A fixing sleeve (2) is fitted onto the drill bit (1), and a positioning bolt (3) is threaded onto the fixing sleeve (2); The outer side of the fixed sleeve (2) is movably connected to the connecting block (4) by a pin, and a torsion spring (5) is provided at the connection between the connecting block (4) and the fixed sleeve (2). The torsion spring (5) acts between the connecting block (4) and the fixed sleeve (2). A rotating rod (6) is fixed on the connecting block (4), and a protective net (9) is fixed on the rotating rod (6); The outer side of the rotating rod (6) is fitted with a limiting sleeve (7) and a connecting sleeve (8). The limiting sleeve (7) and the connecting sleeve (8) are integrally formed. The lower end of the connecting sleeve (8) is fitted onto the outer side of the connecting block (4), and the connecting sleeve (8) and the connecting block (4) are connected by a thread.

2. The dust-proof high-speed steel twist drill according to claim 1, characterized in that: The inner end of the positioning bolt (3) is in contact with the drill bit (1), and the position of the fixing sleeve (2) on the drill bit (1) is fixed by the positioning bolt (3).

3. The dust-proof high-speed steel twist drill according to claim 1, characterized in that: The connecting block (4) and the rotating rod (6) are integrated, and the connecting block (4) and the rotating rod (6) are arranged in three sets symmetrically about the center of the fixed sleeve (2).

4. A dust-proof high-speed steel twist drill according to claim 3, characterized in that: The connecting block (4) and the rotating rod (6) always rotate outward under the action of the torsion spring (5), and the protective net (9) is fixed between adjacent rotating rods (6). The protective net (9) is synchronously unfolded by the rotating rod (6) opening outward.

5. A dust-proof high-speed steel twist drill according to claim 4, characterized in that: The rotating rod (6) and the protective net (9) form a triangular pyramid-shaped cover structure on the outside of the drill bit (1), and the position of the rotating rod (6) and the protective net (9) on the drill bit (1) is changed by the fixing sleeve (2).

6. A dust-proof high-speed steel twist drill according to claim 1, characterized in that: The inner diameter of the connecting block (4) and the rotating rod (6) is equal to the outer diameter of the drill bit (1), the outer diameter of the connecting block (4) is equal to the inner diameter of the connecting sleeve (8), and the outer diameter of the rotating rod (6) is equal to the inner diameter of the limiting sleeve (7).

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