High-temperature-resistant long-acting hexagonal-handle wear-resistant coating drill bit

Abstract

The utility model belongs to the technical field of drill bits, and particularly relates to a high-temperature-resistant long-acting hexagonal-handle wear-resistant coating drill bit which comprises a drill bit body, a heat dissipation channel is formed in the drill bit body and comprises an air channel axially formed in the drill bit body, an air inlet and an air outlet, and the air inlet and the air outlet are formed in the two ends of the drill bit body in the radial direction. An air inlet assembly is installed on the drill bit body and comprises an air guide cover rotationally connected with the drill bit body, a plurality of through holes are formed in one side of the air guide cover, and a plurality of air guide blades fixedly connected with the drill bit body are annularly arranged in the air guide cover at equal intervals. According to the high-temperature-resistant long-acting hexagonal-handle wear-resistant coating drill bit, the drill bit body drives the air guide blades to rotate, the air guide blades compress external air and send the air into the heat dissipation channel, and the air is exhausted through the air outlet in the screw-in end of the drill bit body, so that on one hand, heat generated on the drill bit body can be taken away, and on the other hand, impurities in a drill hole can be blown out; therefore, abrasion is reduced, the structure is compact, and practicability is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to drill bit technical field especially relates to a high temperature resistance long -effect six square handle wear -resistant coating drill bit. BACKGROUND

[0002] The main role of drill bit is to drill through hole or blind hole on solid material, and can be reamed to the existing hole. Drill bit is usually installed at the front end of drill rod, and the material is broken by rotating and advancing to form the required hole.

[0003] When drill bit is in the working state of keeping high speed rotation for a long time, the surface of drill bit will generate heat quickly when contacting with solid hole, and the drill bit under high temperature will accelerate its own wear, thereby affecting the service life. The patent document with the publication number CN214836127U provides a high temperature resistant drill bit for mine. The device is provided with a first functional layer including heat-resistant steel and silicon carbide layer. The heat-resistant steel not only has high strength, but also has good high temperature resistance, oxidation resistance and corrosion resistance. The silicon carbide layer not only has good chemical corrosion resistance, high strength and high hardness, but also has excellent wear resistance and high temperature resistance. The overall high temperature resistance is effectively improved by the heat-resistant steel and silicon carbide layer.

[0004] The device improves the wear resistance and high temperature resistance of drill bit through each functional layer, but the production of such drill bit is relatively complex in actual production process, which also causes high price and leads to difficult popularization and use. Therefore, a high temperature resistance long -effect six square handle wear -resistant coating drill bit is needed to solve the above problems. UTILITY MODEL CONTENT

[0005] In order to overcome the defects of the prior art pointed out above, the present inventors have made in-depth research, and after a lot of creative labor, the utility model is completed.

[0006] Specifically, the technical problem to be solved by the utility model is to provide a high temperature resistance long -effect six square handle wear -resistant coating drill bit to solve the problem that the wear resistance and high temperature resistance of drill bit are improved by each functional layer at present, but the production of such drill bit is relatively complex in actual production process, which also causes high price and leads to difficult popularization and use.

[0007] To solve the above technical problems, the utility model provides the following technical scheme:

[0008] A high temperature resistance long -effect six square handle wear -resistant coating drill bit, including drill bit main part, the drill bit main part is set with heat dissipation channel, the heat dissipation channel includes the air duct that is set in the drill bit main part in the axial direction, and the air inlet and the air outlet that are set in the both ends of the drill bit main part in the radial direction, the air duct is linked with the air inlet and the air outlet, the drill bit main part is installed with the air inlet assembly;

[0009] The air inlet assembly comprises a wind guide cover rotationally connected with the drill bit body, a plurality of through holes are formed in one side of the wind guide cover, and a plurality of wind guide leaves are fixedly arranged in the wind guide cover in a ring shape at equal intervals and connected with the drill bit body.

[0010] As an improved technical solution, the drill bit body is provided with a titanium carbonitride coating.

[0011] As an improved technical solution, the number of the air inlets and the air outlets is multiple and the air inlets and the air outlets are arranged in a ring shape at equal intervals.

[0012] As an improved technical solution, the wind guide cover is fixedly connected with a connecting ring at two ends, a ring-shaped groove matched with the connecting ring is formed in the drill bit body, and a roller shaft is rotationally connected with the connecting ring at equal intervals and in rolling contact with the ring-shaped groove.

[0013] As an improved technical solution, the side of the wind guide cover facing the air inlet is provided in a circular truncated cone structure.

[0014] As an improved technical solution, the wind guide cover is connected with a positioning member, the positioning member comprises a fixed seat, a limiting ball is rotationally connected in the fixed seat, and a counterweight is fixedly connected to the limiting ball through a connecting rod.

[0015] After the above technical solution is adopted, the drill bit body has the following advantages:

[0016] 1. The drill bit body drives the wind guide leaves to rotate, the wind guide leaves compress the air outside to enter the heat dissipation channel, and the air is discharged through the air outlet of the rotating end of the drill bit body, so that the heat generated on the drill bit body can be taken away, the impurities in the drill hole can be blown out, the friction with the drill bit body is reduced, the abrasion is reduced, the structure is compact, and the practicability is good.

[0017] 2. When the drill bit body rotates into the drill hole, the positioning member can keep the wind guide cover fixed under the action of gravity, so that the wind guide leaves can effectively guide the air outside, and the air inlet effect is improved. DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor. Among them:

[0019] Figure 1 It is a whole structure schematic view of the high-temperature-resistant long-acting hexagonal handle wear-resistant coating drill bit.

[0020] Figure 2 It is the cross section schematic view of the drill bit main body structure of the high-temperature-resistant long-acting hexagonal shank wear-resistant coating drill bit.

[0021] Figure 3 It is the structure dissection schematic view of the air inlet assembly of the high-temperature-resistant long-acting hexagonal shank wear-resistant coating drill bit.

[0022] Figure 4 It is the structure dissection schematic view of the positioning member of the high-temperature-resistant long-acting hexagonal shank wear-resistant coating drill bit.

[0023] Explanation of reference signs:

[0024] 1, drill bit main body; 101, air duct; 102, air inlet; 103, air outlet; 104, annular groove; 2, air inlet assembly; 201, air deflector cover; 202, through hole; 203, air deflector blade; 204, connecting ring; 205, roller shaft; 3, positioning member; 301, fixed seat; 302, limiting ball; 303, connecting rod; 304, counterweight. Specific implementation

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0027] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three schemes, taking "A and / or B" as an example, including A scheme, or B scheme, or A and B schemes are satisfied at the same time.

[0028] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the technical features or implying the number of the indicated technical features. Therefore, the features limited by "first" and "second" can be explicitly or implicitly included at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0029] As Figures 1-4 As shown in the drawings, the embodiment provides a high-temperature-resistant long-acting six-handle wear-resistant coating drill bit, which comprises a drill bit body 1, a heat dissipation channel is formed in the drill bit body 1, the heat dissipation channel comprises an air duct 101 axially formed in the drill bit body 1, and an air inlet 102 and an air outlet 103 radially formed at both ends of the drill bit body 1, the air duct 101 is communicated with the air inlet 102 and the air outlet 103, and the air inlet assembly 2 is installed on the drill bit body 1.

[0030] The air inlet assembly 2 comprises a wind deflector 201 rotatably connected with the drill bit body 1, a plurality of through holes 202 are formed in one side of the wind deflector 201, and a plurality of wind guide vanes 203 are arranged in the wind deflector 201 in a ring shape at equal intervals and are fixedly connected with the drill bit body 1.

[0031] In the above technical scheme, the air outlet 103 is arranged at the rotation-in end of the drill bit body 1, the wind guide vane 203 is rotated when the drill bit body 1 rotates, the wind guide vane 203 can compress the air outside and guide it into the air inlet 102 under the guidance of the wind deflector 201, so that the air flow is discharged through the air duct 101 and the air outlet 103, when the drill bit body 1 is in the hole, the flowing air flow can quickly take away the temperature on the surface of the drill bit body 1, so that it can quickly dissipate heat, and at the same time, the impurities in the hole can be blown out, reducing the contact with the surface of the drill bit body 1 and reducing the wear and tear.

[0032] The surface of the drill bit body 1 is provided with a titanium carbonitride coating, which can further improve the wear resistance, heat resistance and lubricity of the drill bit, and prolong the service life of the drill bit.

[0033] The number of the air inlets 102 and the air outlets 103 is multiple and arranged in a ring shape at equal intervals.

[0034] In the above technical scheme, the wind guide vane 203 drives the air to enter through each air inlet 102 and is uniformly discharged through each air outlet 103, so that the surface of the drill bit body 1 can be effectively contacted with the air flow.

[0035] The air guide cover 201 is fixedly connected with a connecting ring 204 at both ends, the connecting ring 204 is matched with an annular groove 104 arranged on the drill bit body 1, and the connecting ring 204 is rotationally connected with roller shafts 205 at equal intervals, and the roller shafts 205 are in rolling contact with the annular groove 104.

[0036] In the above technical scheme, the roller shafts 205 are matched with the annular groove 104 to rotate, so that the air guide cover 201 rotates smoothly on the drill bit body 1, and the working noise is reduced.

[0037] The side of the air guide cover 201 facing the air inlet 102 is provided in a circular truncated cone structure, which can effectively guide the compressed air to quickly enter the air inlet 102.

[0038] The air guide cover 201 is connected with a positioning piece 3, the positioning piece 3 comprises a fixed seat 301, a limiting ball 302 is rotationally connected in the fixed seat 301, and the limiting ball 302 is fixedly connected with a counterweight 304 through a connecting rod 303.

[0039] In the above technical scheme, the limiting ball 302 is matched with the fixed seat 301 to rotate at multiple angles, so that the counterweight 304 rotates and limits the air guide cover 201 under the action of gravity, the air guide cover 201 is stationary when the drill bit body 1 rotates, the air guide blade 203 effectively guides air, and meanwhile, the personnel can be avoided from holding by hand, and the safety is improved.

[0040] In use, the counterweight 304 rotates and limits the air guide cover 201 under the action of gravity, when the rotation inlet of the drill bit body 1 rotates to drill a hole, the air guide blade 203 rotates to compress the air outside and deliver the air to the air duct 101 through the air inlet 102, and then the air is discharged through the air outlet 103, the flowing air current can take away the heat generated when the drill bit body 1 rotates, and meanwhile, the impurities in the hole can be blown out, the contact with the surface of the drill bit body 1 is reduced, and the abrasion consumption is reduced.

[0041] It should be understood that the use of these embodiments is only for illustrating the utility model and is not intended to limit the protection scope of the utility model. In addition, it should also be understood that after reading the technical content of the utility model, those skilled in the art can make various changes, modifications and / or variations to the utility model, and all these equivalent forms also fall within the protection scope defined by the claims attached to the present application.

Claims

1. A high temperature resistant long lasting hexagonal shank wear resistant coated drill bit, characterized by: The application relates to a drill bit body (1) provided with a heat dissipation channel, wherein the heat dissipation channel comprises an air duct (101) axially arranged in the drill bit body (1), and an air inlet (102) and an air outlet (103) radially arranged at two ends of the drill bit body (1); the air duct (101) is in communication with the air inlet (102) and the air outlet (103); and an air inlet assembly (2) is arranged on the drill bit body (1). The air inlet assembly (2) comprises a wind guide cover (201) rotationally connected with the drill bit body (1); a plurality of through holes (202) are arranged on one side of the wind guide cover (201); and a plurality of wind guide blades (203) are arranged in the wind guide cover (201) in a ring shape at equal intervals and are fixedly connected with the drill bit body (1).

2. The high temperature resistant long lasting hexagonal shank wear resistant coated drill bit of claim 1, wherein: The surface of the drill bit body (1) is provided with a titanium carbonitride coating.

3. The high temperature resistant long lasting hexagonal shank wear resistant coated drill bit of claim 1, wherein: The number of the air inlets (102) and the air outlets (103) is multiple, and the air inlets (102) and the air outlets (103) are arranged in a ring shape at equal intervals.

4. The high temperature resistant long lasting hexagonal shank wear resistant coated drill bit of claim 1, wherein: Connecting rings (204) are fixedly connected at two ends of the wind guide cover (201); ring grooves (104) compatible with the connecting rings (204) are arranged on the drill bit body (1); and roller shafts (205) are rotationally connected to the connecting rings (204) at equal intervals; and the roller shafts (205) are in rolling contact with the ring grooves (104).

5. The high temperature resistant long lasting hexagonal shank wear resistant coated drill bit of claim 1, wherein: The side of the wind guide cover (201) facing the air inlet (102) is arranged in a circular truncated cone structure.

6. The high temperature resistant long lasting hexagonal shank abrasive coated drill bit of claim 1, wherein: A positioning piece (3) is connected to the wind guide cover (201); the positioning piece (3) comprises a fixed seat (301); a limiting ball (302) is rotationally connected in the fixed seat (301); and a counterweight (304) is fixedly connected to the limiting ball (302) through a connecting rod (303).

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