Hard alloy efficient drill bit

Abstract

The utility model provides an efficient hard alloy drill bit, which relates to the technical field of drill bits and comprises a connecting magnet, a clamping block for fastening a connecting body is arranged on the periphery of the connecting magnet, and a fastening screw sleeve for adjusting the clamping block is attached to one end of the clamping block. And a sealing rubber sleeve for protecting the clamping block is fixedly mounted at the other end of the clamping block. Compared with the prior art, the drill bit has the advantages that the connecting magnet is arranged in the center of one end of the connecting body of the drill bit, the drill bit and the mounting structure are aligned through magnetic attraction of the connecting magnet, the drill bit and the mounting structure can be attracted through the magnetism of the connecting magnet, the drill bit is prevented from falling off and being lost, the accuracy and convenience of drill bit mounting are improved, and the service life of the drill bit is prolonged. And meanwhile, the reinforcing display strip capable of conducting bright color indication is arranged on the surface of the connector of the drill bit, the drill bit is convenient to find, the drill bit has higher impact resistance through the elasticity in the reinforcing display strip, and the safety of the drill bit is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of drill bit, especially relates to a hard alloy efficient drill bit. BACKGROUND

[0002] Drill bit is a kind of precision drilling tool, usually manual operation. They are usually small, so more easily controlled, can be used for drilling, suitable for hand drill, electric screwdriver and other equipment, can be used in home repair, DIY and so on, convenient and practical. Usually drill bit is used for the drilling of printed circuit board, the speed of drill bit rotation is usually fast, so the material quality requirement of drill bit is higher, to avoid drill bit fracture.

[0003] But the drill bit in the prior art is small in size, and is easy to fall off during disassembly, so it is not convenient to find, and the disassembly and use efficiency are affected. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model aims at providing a hard alloy efficient drill bit to solve the problems mentioned in the background art and overcome the deficiencies in the prior art.

[0005] In order to achieve the above-mentioned purpose, the embodiment of the utility model provides a hard alloy efficient drill bit, which comprises a drill bit main body made of hard alloy material, one end of the drill bit main body is fixedly connected with a connecting body connected therewith, a connecting magnet for magnetic attraction is fixedly installed in the inside of the connecting body, clamping blocks for fastening the connecting body are arranged around the connecting magnet, a fastening sleeve for adjusting the clamping blocks is attached to one end of the clamping blocks, a sealing rubber sleeve for protecting the clamping blocks is fixedly installed at the other end of the clamping blocks, a positioning clamping block for limiting the fastening sleeve is fixedly installed in the inside of the connecting body, and a reinforcing display strip is arranged on one side of the positioning clamping block.

[0006] It is preferred that the drill bit main body is provided with a spiral cutting edge at the end away from the connecting body, the surface of the connecting body is provided with a thread for providing driving, one end of the connecting body is provided with an attraction fixing groove for fixing the connecting magnet, and the periphery of the connecting body is provided with a movable groove for accommodating the clamping blocks.

[0007] The drill bit body is made of hard alloy material, has high hardness and strong wear resistance, can withstand the great friction and impact force generated during high-speed rotation drilling, and ensures the stability and durability of the drill bit during long-time work. The spiral cutting edge at one end of the drill bit body is precisely designed and processed, and the angle of the cutting edge, the shape and spacing of the spiral line and other parameters are optimized, which can efficiently cut the material and improve the drilling efficiency and quality. The connecting body is a connecting component of the drill bit body and external equipment (such as a drilling machine), and the suction fixing groove at one end of the connecting body provides a stable mounting position for the connecting magnet, so that the connecting magnet can accurately play the role of magnetic attraction, facilitating the installation and positioning of the drill bit. The movable slot around the connecting body provides space for the movement of the clamping block, ensuring that the clamping block can be tightly or loosely adjusted by the adjusting screw, and the connecting magnet and the magnetic or metal part in the installation structure (such as the chuck of the drilling machine) produce an attractive effect during the installation of the drill bit, which can preliminarily position the drill bit, quickly and accurately align the installation position, reduce the installation time and error, and prevent the drill bit from falling accidentally during installation to some extent, improving the safety of the operation. Even if the connecting magnet is not completely tightened, it can temporarily fix the drill bit, avoid the loss or damage of the drill bit due to improper operation, facilitate the subsequent tightening operation, and improve the accuracy and overall efficiency of the drill bit installation.

[0008] Preferably, according to any one of the above solutions, the clamping block comprises a fastening spring for providing support and a fastening flap for clamping, the fastening spring is fixedly installed inside the connecting body, one end of the fastening spring is fixedly installed with a fastening flap that moves inside the connecting body, and the other end of the fastening flap is provided with a plurality of protection grooves.

[0009] The above technical solution is adopted: the fastening spring provides continuous elastic support for the fastening flap, so that the fastening flap can stably fasten the drill bit, the plurality of protection grooves at one end of the fastening flap can increase the friction with the surface of the installation structure, further improving the fastening effect, and the inclined surface structure at the other end of the fastening flap is designed ingeniously and closely matches the inclined surface of the fastening screw, so that when the fastening screw is rotated, the position of the fastening flap in the movable slot can be accurately adjusted through the interaction between the inclined surfaces, the fastening force of the drill bit is adjusted, different installation requirements are met, and the stability of the drill bit during work is ensured.

[0010] Preferably, according to any one of the above solutions, the fastening screw is threadedly connected to the surface of the connecting body, the inclined surface of the fastening screw matches the inclined surface of the fastening flap, and the surface of the fastening screw is provided with a plurality of anti-slip patterns.

[0011] The technical scheme is as follows: the plurality of anti-skid lines formed on the surface of the fastening sleeve increase the friction force between the hand of the operator and the fastening sleeve when the fastening sleeve is rotated, facilitating operation and ensuring that the rotation angle and position of the fastening sleeve can be accurately controlled; when the fastening sleeve is rotated clockwise, the inclined surface of the fastening sleeve pushes the fastening flap to move outward of the connecting body, increasing the fastening force of the clamping block on the mounting structure; conversely, when the fastening sleeve is rotated counterclockwise, the fastening force is reduced. This way of adjusting the clamping block through the fastening sleeve makes the dismounting and mounting of the drill bit simple and convenient, without the need for complex tools, improves the maintenance efficiency of the drill bit, and ensures the stability of the drill bit under different working conditions.

[0012] Preferably, according to any one of the above schemes, the sealing sleeve is fixedly installed around the connecting body, one end of the sealing sleeve away from the connecting body is fixedly installed with the fastening flap, and the sealing sleeve is located on one side of the fastening spring.

[0013] The technical scheme is as follows: the sealing sleeve can effectively prevent impurities such as dust and moisture from entering the inside of the connecting body, avoid corrosion or damage of the impurities to components such as the connecting magnet and the fastening spring, ensure the normal work of these components, and prolong the service life of the drill bit.

[0014] Preferably, according to any one of the above schemes, the positioning clamping block comprises a positioning spring providing support and a positioning column limiting the range of movement of the fastening sleeve, the positioning spring is fixedly installed inside the connecting body, and one end of the positioning spring is fixedly installed with the positioning column movable relative to the connecting body.

[0015] The technical scheme is as follows: the positioning spring provides elastic support for the positioning column, so that the positioning column can stably limit the position of the fastening sleeve; during the rotation of the fastening sleeve to adjust the clamping block, the positioning column is pushed out by the positioning spring to limit the fastening sleeve, preventing the fastening sleeve from being excessively rotated to cause the clamping block to lose control or be damaged, improving the reliability and safety of the drill bit installation, and ensuring that the drill bit always maintains a stable connection state during work.

[0016] Preferably, according to any one of the above schemes, the reinforcing display strip comprises a reinforcing rubber pad providing support and an indicator strip providing bright color display, the reinforcing rubber pad is fixedly installed around the connecting body, and one end of the reinforcing rubber pad is fixedly installed with the indicator strip.

[0017] The technical scheme is as follows: the reinforced rubber pad is fixedly installed around the connecting body, has good elasticity and buffering performance, can absorb part of impact force when the drill bit is impacted from outside, protects the drill bit body and the connecting body from being damaged, improves the impact resistance of the drill bit, the indicator strip is designed in bright color, has high visibility in a working environment, and is convenient for an operator to quickly find the position of the drill bit, especially in the case that light is dim or the drill bit falls, time for searching can be greatly saved, and work efficiency is improved.

[0018] Compared with the prior art, the utility model has the advantages and beneficial effects that:

[0019] 1、In the center of the connecting body of the drill bit, a connecting magnet is arranged, the drill bit and the mounting structure are aligned by using the magnetic attraction of the connecting magnet, the drill bit and the mounting structure are attracted by the magnetism of the connecting magnet, the drill bit is prevented from falling and being lost, the accuracy and convenience of the drill bit installation are improved, a reinforced display strip that can indicate in bright color is arranged on the surface of the connecting body of the drill bit, the position of the drill bit is indicated by using the reinforced display strip, the drill bit is searched conveniently, the drill bit has higher impact resistance by using the elasticity of the reinforced display strip, and the safety of the drill bit is improved.

[0020] 2、Around the connecting body of the drill bit, an adjustable clamping block is arranged, the stability between the drill bit and the mounting structure is improved by using the clamping block, the position of the clamping block is adjusted by a fastening screw, the convenience of dismounting and mounting the drill bit is improved, and the movement range of the fastening screw is limited by a positioning clamping block, and the stability of the clamping block adjustment is improved.

[0021] Additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or will be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0022] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, in which:

[0023] Figure 1 is a structural schematic view according to the utility model embodiment;

[0024] Figure 2 is a sectional structure schematic view of the connecting body according to the utility model embodiment;

[0025] Figure 3 is a sectional structure schematic view of the connecting body according to the utility model embodiment Figure 1 is an enlarged schematic view of A in the figure;

[0026] Figure 4 is an enlarged schematic view of A in the figure; Figure 1An enlarged structure schematic view at B;

[0027] Figure 5 To according to the utility model embodiment Figure 2 An enlarged structure schematic view at C;

[0028] Wherein: 1-drill bit main body, 2-connector, 3-connection magnet, 4-clamping block, 41-fastening spring, 42-fastening flap, 5-fastening nut, 6-sealing rubber sleeve, 7-positioning block, 71-positioning spring, 72-positioning column, 8-reinforced display bar, 81-reinforced rubber pad, 82-indicator bar, 9-movable slot. DETAILED DESCRIPTION

[0029] The utility model will be further described below in combination with the drawings, but the protection scope of the utility model is not limited to the following.

[0030] As Figures 1-5 The utility model discloses a hard alloy efficient drill bit, including the drill bit main body 1 of hard alloy material production, the one end fixed connection of drill bit main body 1 has to the connector 2 that it is connected, the inside fixed mounting of connector 2 has the connection magnet 3 that carries out magnetic attraction, the four around of connection magnet 3 is provided with the clamping block 4 that is fastened to connector 2, the one end of clamping block 4 is pasted with the fastening nut 5 that is adjusted to it, the other end fixed mounting of clamping block 4 is provided with the sealing rubber sleeve 6 that protects it, the inside fixed mounting of connector 2 has the positioning block 7 that is limited to fastening nut 5, the one side of positioning block 7 is provided with the reinforced display bar 8.

[0031] It is preferred from the above any scheme that the one end of drill bit main body 1 away from connector 2 is provided with spiral cutting edge, the surface of connector 2 is provided with the thread that provides drive, the one end of connector 2 is provided with the attraction fixed groove that fixed connection magnet 3, the four around of connector 2 are provided with movable slot 9 that accommodate clamping block 4.

[0032] The technical scheme is as follows: the drill bit main body 1 is made of hard alloy material, has high hardness and strong wear resistance, can bear the great friction and impact force generated during high-speed rotation drilling, and ensures the stability and durability of the drill bit during long-time work; the spiral cutting edge provided at one end of the drill bit main body 1 is precisely designed and processed, the angle of the cutting edge, the shape and spacing of the spiral line and other parameters are optimized, the spiral cutting edge can efficiently cut the material and improve the drilling efficiency and quality; the connecting body 2 is a connecting component of the drill bit main body 1 and external equipment (such as a drilling machine), the suction fixing groove provided at one end of the connecting body 2 provides a stable mounting position for the connecting magnet 3, the connecting magnet 3 can accurately play the magnetic attraction effect, the drill bit is convenient to install and position; the movable grooves 9 provided around the connecting body 2 provide space for the movement of the clamping block 4, and the clamping block 4 can be tightly fixed or released to the drill bit under the adjustment of the fastening screw sleeve 5, during the installation of the drill bit, the connecting magnet 3 and the magnetic or metal part in the mounting structure (such as the chuck of the drilling machine) produce an attraction effect, which firstly has a preliminary positioning effect, so that the drill bit can be quickly and accurately aligned with the installation position, reducing the installation time and error, secondly, the magnetic attraction can prevent the drill bit from accidentally falling during installation to a certain extent, improving the safety of the operation, even if the drill bit is not completely fastened, the connecting magnet 3 can temporarily fix the drill bit, avoiding the drill bit from being lost or damaged due to improper operation, providing convenience for subsequent fastening operation, and improving the accuracy and overall efficiency of the drill bit installation.

[0033] According to any one of the above schemes, preferably, the clamping block 4 comprises a fastening spring 41 for providing support and a fastening flap 42 for clamping, the fastening spring 41 is fixedly installed in the interior of the connecting body 2, one end of the fastening spring 41 is fixedly installed with the fastening flap 42 which moves in the interior of the connecting body 2, one end of the fastening flap 42 is provided with a plurality of protection grooves, and the other end of the fastening flap 42 is provided with a beveled structure.

[0034] According to the above technical scheme: the fastening spring 41 provides continuous elastic support for the fastening flap 42, so that the fastening flap 42 can stably fasten the drill bit, the plurality of protection grooves provided at one end of the fastening flap 42 can increase the friction with the surface of the mounting structure, further improving the fastening effect, and the beveled structure provided at the other end of the fastening flap 42 is designed ingeniously and closely matches the slope of the fastening screw sleeve 5, when the fastening screw sleeve 5 rotates, the position of the fastening flap 42 in the movable groove 9 can be accurately adjusted through the interaction between the slopes, the fastening force of the drill bit can be adjusted, so as to adapt to different installation requirements and ensure the stability of the drill bit during work.

[0035] According to any one of the above schemes, preferably, the fastening screw sleeve 5 is threadedly connected to the surface of the connecting body 2, the slope of the fastening screw sleeve 5 and the fastening flap 42 closely matches, and a plurality of anti-skid lines are provided on the surface of the fastening screw sleeve 5.

[0036] The above technical solution employs several anti-slip grooves on the surface of the fastening sleeve 5, increasing the friction between the operator's hand and the sleeve when rotating it. This facilitates operation and ensures precise control over the rotation angle and position of the fastening sleeve 5. When the fastening sleeve 5 is rotated clockwise, its inclined surface pushes the fastening flap 42 outwards from the connecting body 2, increasing the fastening force of the clamping block 4 on the installation structure. Conversely, rotating the fastening sleeve 5 counterclockwise decreases the fastening force. This method of adjusting the clamping block 4 via the fastening sleeve 5 simplifies and facilitates the assembly and disassembly of the drill bit, eliminating the need for complex tools, improving drill bit maintenance efficiency, and ensuring the stability of drill bit installation under different working conditions.

[0037] Preferably, of any of the above solutions, the sealing sleeve 6 is fixedly installed around the connector 2, the end of the sealing sleeve 6 away from the connector 2 is fixedly installed with the fastening flap 42, and the sealing sleeve 6 is located on one side of the fastening spring 41.

[0038] By adopting the above technical solution, the sealing sleeve 6 can effectively prevent dust, moisture and other impurities from entering the interior of the connector 2, avoid impurities from causing corrosion or damage to components such as the connecting magnet 3 and the fastening spring 41, ensure the normal operation of these components, and extend the service life of the drill bit.

[0039] Preferably, in any of the above solutions, the positioning block 7 includes a positioning spring 71 that provides support and a positioning post 72 that limits the range of motion of the fastening screw sleeve 5. The positioning spring 71 is fixedly installed inside the connecting body 2, and one end of the positioning spring 71 is fixedly installed with the positioning post 72 that moves in the connecting body 2.

[0040] The above technical solution is adopted: the positioning spring 71 provides elastic support for the positioning post 72, so that the positioning post 72 can stably restrict the position of the fastening sleeve 5. During the process of the fastening sleeve 5 rotating to adjust the clamping block 4, the positioning post 72 pops out under the action of the positioning spring 71 to restrict the fastening sleeve 5, preventing the fastening sleeve 5 from rotating excessively and causing the clamping block 4 to lose control or be damaged. This improves the reliability and safety of the drill bit installation and ensures that the drill bit always maintains a stable connection state during operation.

[0041] Preferably, the reinforced display strip 8 includes a reinforcing pad 81 for support and an indicator strip 82 for bright display. The reinforcing pad 81 is fixedly installed around the connector 2, and the indicator strip 82 is fixedly installed at one end of the reinforcing pad 81.

[0042] The above technical solution is adopted: the reinforcing rubber pad 81 is fixedly installed around the connector 2. It has good elasticity and buffering performance, which can absorb part of the impact force when the drill bit is subjected to external impact, protect the drill bit body 1 and the connector 2 from damage, and improve the impact resistance of the drill bit. The indicator strip 82 adopts a bright color design, which makes it highly visible in the working environment, making it easy for operators to quickly find the position of the drill bit. Especially in the case of low light or when the drill bit is dropped, it can greatly save search time and improve work efficiency.

[0043] The working principle of this utility model of a high-efficiency carbide drill bit is as follows:

[0044] During installation, bring the drill bit connector 2 close to the mounting structure. The connecting magnet 3 will generate magnetic attraction for initial positioning and to prevent it from falling off. Then, rotate the fastening sleeve 5, whose inclined surface engages with the inclined surface of the fastening flap 42, pushing the fastening flap 42 to move within the movable groove 9. The fastening spring 41 provides elasticity to lock the fastening flap 42 into the mounting structure. The sealing sleeve 6 provides protection and cushioning. The positioning post 72, under the action of the positioning spring 71, restricts the range of motion of the fastening sleeve 5. To disassemble, simply rotate the fastening sleeve 5 in the opposite direction to loosen the fastening flap 42.

[0045] Compared with the prior art, the present invention has the following advantages:

[0046] 1. A connecting magnet 3 is set at the center of one end of the drill bit connector 2. The magnetic attraction of the connecting magnet 3 is used to align the drill bit and the mounting structure. The magnet 3 also allows the drill bit and the mounting structure to be attracted together, preventing the drill bit from falling out and being lost. This improves the accuracy and convenience of drill bit installation. At the same time, a reinforced display strip 8 with bright color indication is set on the surface of the drill bit connector 2. The reinforced display strip 8 indicates the position of the drill bit, making it easy to find. The elasticity inside the reinforced display strip 8 gives the drill bit higher impact resistance, improving the safety of the drill bit.

[0047] 2. Adjustable clamping blocks 4 are provided around the connecting body 2 of the drill bit. The clamping blocks 4 improve the stability between the drill bit and the installation structure. At the same time, the position of the clamping blocks 4 is adjusted by the fastening nut 5 to improve the convenience of drill bit disassembly and assembly. The positioning block 7 is provided to limit the movement range of the fastening nut 5 and improve the stability of the adjustment of the clamping blocks 4.

Claims

1. A high-efficiency cemented carbide drill bit, comprising a drill bit body (1) made of cemented carbide material, wherein a connecting body (2) is fixedly connected to one end of the drill bit body (1), characterized in that: The connector (2) is fixedly installed with a connecting magnet (3) for magnetic attraction. The connecting magnet (3) is surrounded by a clamping block (4) for fastening the connector (2). One end of the clamping block (4) is fitted with a fastening sleeve (5) for adjustment. The other end of the clamping block (4) is fixedly installed with a sealing sleeve (6) for protection. The connector (2) is fixedly installed with a positioning block (7) for limiting the fastening sleeve (5). A reinforcing display strip (8) is provided on one side of the positioning block (7).

2. The high-efficiency carbide drill bit as described in claim 1, characterized in that: The drill bit body (1) is provided with a spiral cutting edge at one end away from the connector (2). The surface of the connector (2) is provided with a thread for driving. One end of the connector (2) is provided with a suction and fixing groove for fixing the magnet (3). The connector (2) is provided with a movable groove (9) for accommodating the clamping block (4) around its perimeter.

3. The high-efficiency carbide drill bit as described in claim 2, characterized in that: The clamping block (4) includes a fastening spring (41) that provides support and a fastening flap (42) that performs clamping. The fastening spring (41) is fixedly installed inside the connecting body (2). One end of the fastening spring (41) is fixedly installed with a fastening flap (42) that moves inside the connecting body (2). One end of the fastening flap (42) is provided with several protective grooves, and the other end of the fastening flap (42) is provided with a sloping structure.

4. The high-efficiency carbide drill bit as described in claim 3, characterized in that: The fastening sleeve (5) is threaded to the surface of the connecting body (2). The fastening sleeve (5) and the inclined surface of the fastening flap (42) are in contact. The surface of the fastening sleeve (5) is provided with several anti-slip textures.

5. The high-efficiency carbide drill bit as described in claim 4, characterized in that: The sealing sleeve (6) is fixedly installed around the connector (2). The end of the sealing sleeve (6) away from the connector (2) is fixedly installed with the fastening flap (42). The sealing sleeve (6) is located on one side of the fastening spring (41).

6. The high-efficiency carbide drill bit as described in claim 5, characterized in that: The positioning block (7) includes a positioning spring (71) that provides support and a positioning post (72) that limits the range of motion of the fastening screw sleeve (5). The positioning spring (71) is fixedly installed inside the connecting body (2), and one end of the positioning spring (71) is fixedly installed with the positioning post (72) that moves in the connecting body (2).

7. The high-efficiency carbide drill bit as described in claim 6, characterized in that: The reinforced display strip (8) includes a reinforcing pad (81) for support and an indicator strip (82) for bright display. The reinforcing pad (81) is fixedly installed around the connector (2), and the indicator strip (82) is fixedly installed at one end of the reinforcing pad (81).

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