Replaceable drilling drill bit

Abstract

The utility model discloses a replaceable perforating drill bit, comprising a drill rod and a drill bit detachably connected to the drill rod, wherein a mounting opening is provided at the middle portion of one end of the drill rod connected to the drill bit, and the side wall of the mounting opening is provided with three fan-shaped openings distributed in a circumferential array, and fan-shaped grooves are provided between each of the fan-shaped openings, and the drill bit comprises a connector, and a mounting block matching the mounting opening is provided at the bottom of the connector. When the utility model is installed between the drill bit and the drill rod, the three fan-shaped blocks of the drill bit are aligned with the three fan-shaped openings on the drill rod and inserted, and then the drill bit is rotated clockwise, at which time the three fan-shaped blocks will rotate into the fan-shaped grooves, and under the action of the tightening block and the spring, the drill bit and the drill rod are fixed together, the installation is simple and quick, the work efficiency is greatly improved, and the drill bit is convenient to replace quickly.

Description

Technical Field

[0001] The utility model belongs to the technical field of drill bits, and in particular relates to a replaceable drilling drill bit. Background Art

[0002] At present, the application of drilling technology has been very extensive, and with the gradual increase in scientific research and production tasks, it has become increasingly skilled and accurate.

[0003] Existing drilling drill bit assemblies usually include a drill bit, a drill rod, a transmission component and a driving component. When drilling, the drill bit is placed at the position to be drilled, and the driving component drives the transmission component to drive the drill rod to move in a vertical direction, thereby driving the drill bit to drill a hole vertically along the axis direction of the drill rod at the position to be drilled.

[0004] However, the drill bit and drill rod of the existing products are an integrated structure, and the drill bit is a consumable part. Therefore, when the drill bit is damaged, the entire drill bit and drill rod need to be replaced, which greatly increases the cost. In addition, the existing drill bit itself does not have the function of air supply and heat dissipation, and needs to rely on external heat dissipation equipment for heat dissipation, which is not only inconvenient, but also affects the operation. Utility Model Content

[0005] The utility model aims to provide a replaceable drilling drill bit to solve the technical problems raised in the background technology.

[0006] To achieve the above-mentioned objectives, the specific technical scheme of the utility model is as follows: a replaceable drilling drill bit, comprising a drill rod and a drill bit detachably connected to the drill rod, a mounting opening being provided in the middle part of one end of the drill rod connected to the drill bit, the side wall of the mounting opening being provided with three fan-shaped openings distributed in a circular array, a fan-shaped groove being provided between each of the fan-shaped openings, the drill bit comprising a connecting head, a mounting block matching the mounting opening being provided at the bottom of the connecting head, three fan-shaped blocks distributed in a circular array being provided on the side wall of the mounting block, a receiving groove being provided at the bottom of the fan-shaped groove, an elastic tightening structure for tightening and fixing the fan-shaped block being provided in the receiving groove, a conical surface being provided at the top of the connecting head, three cutting blocks distributed in a circular array being provided on the conical surface, each of the cutting blocks being provided with an alloy block, and a ventilation and heat dissipation structure being provided in the inner cavity of the connecting head.

[0007] Preferably, one end of the fan-shaped groove is connected to the fan-shaped opening, and a stopper is provided between the other end and the fan-shaped opening.

[0008] Preferably, the size of the sector block matches the size of the sector groove.

[0009] Preferably, the elastic clamping structure comprises a clamping block, the size of the clamping block matches the size of the receiving slot, and the clamping block is slidably connected to the receiving slot up and down, and the bottom of the clamping block is connected to the bottom inner wall of the receiving slot through two springs.

[0010] Preferably, both side walls of the accommodating groove are provided with vertically distributed limiting grooves, the top of the limiting groove is a sealed structure, and the bottoms of both ends of the clamping block are provided with limiting blocks connected to the limiting grooves for upward and downward sliding.

[0011] Preferably, a first arcuate surface is provided at one end of the pressing block away from the stopper, and a second arcuate surface is provided at one end of the sector block opposite to the first arcuate surface.

[0012] Preferably, the ventilation and heat dissipation structure includes a central channel arranged in the inner cavity of the connector, the side wall of the connector is provided with three air inlets distributed in a circular array, and the air inlets are connected to the central channel, the top of the connector and the surface of the conical surface are provided with heat dissipation holes, the heat dissipation holes are connected to the central channel, and an arc-shaped groove is provided between each two adjacent air inlets.

[0013] The replaceable drilling drill bit of the utility model has the following advantages:

[0014] 1. When the utility model is installed between the drill bit and the drill rod, the three sector blocks of the drill bit are aligned with the three sector openings on the drill rod and inserted, and then the drill bit is rotated clockwise, at which time the three sector blocks are rotated into the sector grooves, and under the action of the tightening block and the spring, the drill bit and the drill rod are fixed together, the installation is simple and fast, the work efficiency is greatly improved, and the drill bit can be quickly replaced.

[0015] 2. The utility model sets an arc-shaped groove so that the air inlet protrudes from the surface of the arc-shaped groove, so that when the drill bit rotates, air will enter the central channel through the air inlet and supply air to each heat dissipation hole through the center, thereby facilitating the cooling of the drill bit, ensuring the stable operation of the drill bit and extending the service life of the drill bit. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the installation port in the utility model;

[0019] Figure 3 This is an exploded view of the abutment block and the drill rod in the utility model;

[0020] Figure 4 It is a structural schematic diagram of the tightening block in the utility model;

[0021] Figure 5 It is a structural schematic diagram of the drill bit in the utility model;

[0022] Figure 6 for Figure 5 Schematic diagram of the structure from another perspective.

[0023] Explanation of markings in the figure: 1. drill rod; 2. drill bit; 3. mounting opening; 4. fan-shaped opening; 5. fan-shaped groove; 6. stopper; 7. tightening block; 8. spring; 9. accommodating groove; 10. limit block; 11. first arc-shaped surface; 12. connecting head; 13. mounting block; 14. fan-shaped block; 15. second arc-shaped surface; 16. conical surface; 17. cutting block; 18. alloy block; 19. air inlet; 20. arc-shaped groove; 21. heat dissipation hole. DETAILED DESCRIPTION

[0024] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0025] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0027] In the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0028] The disclosure below provides many different embodiments or examples for realizing different structures of the embodiments of the present utility model. In order to simplify the disclosure of the embodiments of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the present utility model. In addition, the embodiments of the present utility model can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0029] In order to better understand the purpose, structure and function of the utility model, the replaceable drilling drill bit of the utility model is further described in detail below with reference to the accompanying drawings.

[0030] like Figure 1-6 As shown, a replaceable drilling drill bit of the utility model comprises a drill rod 1 and a drill bit 2 detachably connected to the drill rod 1, a mounting opening 3 is arranged in the middle part of one end where the drill rod 1 is connected to the drill bit 2, three fan-shaped openings 4 distributed in a circumferential array are arranged on the side wall of the mounting opening 3, fan-shaped grooves 5 are arranged between each fan-shaped opening 4, one end of the fan-shaped groove 5 is connected to the fan-shaped opening 4, and a stopper 6 is arranged between the other end and the fan-shaped opening 4, and the size of the fan-shaped block 14 matches the size of the fan-shaped groove 5 When installing between the drill bit 2 and the drill rod 1, the three sector blocks 14 of the drill bit 2 are aligned with the three sector openings 4 on the drill rod 1 and inserted, and then the drill bit 2 is rotated clockwise. At this time, the three sector blocks 14 will rotate into the sector groove 5, so that the drill bit 2 and the drill rod 1 are fixed together. The installation is simple and quick, which greatly improves the work efficiency and facilitates the rapid replacement of the drill bit. The function of the stop block 6 is that when it rotates clockwise, the sector block 14 is rotated to the sector opening 4.

[0031] The drill bit 2 includes a connecting head 12, a mounting block 13 matching the mounting port 3 is provided at the bottom of the connecting head 12, three fan-shaped blocks 14 distributed in a circumferential array are provided on the side wall of the mounting block 13, a receiving groove 9 is provided at the bottom of the fan-shaped groove 5, and an elastic tightening structure for tightening and fixing the fan-shaped block 14 is provided in the receiving groove 9, and the elastic tightening structure includes a tightening block 7, the size of the tightening block 7 matches the size of the receiving groove 9, and the tightening block 7 is connected to the receiving groove 9 by sliding up and down, and the bottom of the tightening block 7 is connected to the bottom inner wall of the receiving groove 9 by two springs 8. When the drill bit 2 is rotated, when When the fan-shaped block 14 rotates into the fan-shaped groove 5, the bottom of the fan-shaped block 14 will contact the upper surface of the clamping block 7. When the fan-shaped block 14 completely enters the fan-shaped groove 5, the bottom of the fan-shaped block 14 will completely contact the upper surface of the clamping block 7. At the same time, under the elastic force of the spring 8, the clamping block 7 produces an extrusion force on the fan-shaped block 14, thereby locking and fixing the fan-shaped block 14. When the drill bit 2 needs to be disassembled, it is necessary to press the drill bit 2 hard so that the fan-shaped block 14 squeezes the clamping block 7 and rotates the drill bit 2 counterclockwise so that the fan-shaped block 14 is rotated to the fan-shaped mouth 4, and the drill bit 2 can be disassembled. The two side walls of the receiving groove 9 are provided with vertically distributed limiting grooves, the top of which is a sealed structure, and the bottoms of both ends of the clamping block 7 are provided with limiting blocks 10 connected to the limiting grooves for sliding up and down. The cooperation between the limiting blocks 10 and the limiting grooves not only limits the clamping block 7 so that the clamping block 7 can only move up and down, but also effectively prevents the clamping block 7 from completely moving to the top of the receiving groove 9. The end of the clamping block 7 away from the stopper 6 is provided with a first arc surface 11, and the end of the fan-shaped block 14 opposite to the first arc surface 11 is provided with a second arc surface 15. Through the cooperation between the first arc surface 11 and the second arc surface 15, when the fan-shaped block 14 just contacts the clamping block 7, the second arc surface 15 contacts the first arc surface 11, which is conducive to the fan-shaped block 14 squeezing the clamping block 7 into the fan-shaped groove 5.

[0032] The top of the connector 12 is provided with a conical surface 16, and three cutting blocks 17 are arranged in a circumferential array on the conical surface 16, and each cutting block 17 is provided with an alloy block 18, and the inner cavity of the connector 12 is provided with a ventilation and heat dissipation structure, and the ventilation and heat dissipation structure includes a central channel arranged in the inner cavity of the connector 12, and the side wall of the connector 12 is provided with three air inlets 19 distributed in a circumferential array, and the air inlet 19 is connected to the central channel, and the top of the connector 12 and the surface of the conical surface 16 are provided with A heat dissipation hole 21 is provided, which is connected to the central channel, and an arc-shaped groove 20 is provided between each two adjacent air inlets 19. Through the provision of the arc-shaped groove 20, the air inlet 19 protrudes from the surface of the arc-shaped groove 20, so that when the drill bit 2 rotates, air flow will enter the central channel through the air inlet 19, and supply air to each heat dissipation hole 21 through the center, thereby facilitating the cooling of the drill bit 2, ensuring the stable operation of the drill bit, and extending the service life of the drill bit.

[0033] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A replaceable drilling drill bit, characterized in that: The drill bit (2) comprises a drill rod (1) and a drill bit (2) detachably connected to the drill rod (1); a mounting opening (3) is provided at the middle portion of one end of the drill rod (1) connected to the drill bit (2); a side wall of the mounting opening (3) is provided with three fan-shaped openings (4) distributed in a circumferential array; a fan-shaped groove (5) is provided between each of the fan-shaped openings (4); the drill bit (2) comprises a connector (12); a mounting block (13) matching the mounting opening (3) is provided at the bottom of the connector (12); and a side wall of the mounting block (13) is provided with a mounting block (13) Three fan-shaped blocks (14) are arranged in a circumferential array, a receiving groove (9) is arranged at the bottom of the fan-shaped groove (5), an elastic pressing structure for pressing and fixing the fan-shaped block (14) is arranged in the receiving groove (9), a conical surface (16) is arranged at the top of the connecting head (12), three cutting blocks (17) are arranged in a circumferential array on the conical surface (16), each of the cutting blocks (17) is arranged with an alloy block (18), and a ventilation and heat dissipation structure is arranged in the inner cavity of the connecting head (12).

2. The replaceable drilling drill bit according to claim 1, characterized in that: One end of the fan-shaped groove (5) is connected to the fan-shaped opening (4), and a stopper (6) is provided between the other end and the fan-shaped opening (4).

3. The replaceable drilling drill bit according to claim 1, characterized in that: The size of the sector block (14) matches the size of the sector groove (5).

4. The replaceable drilling drill bit according to claim 1, characterized in that: The elastic clamping structure comprises a clamping block (7), the size of the clamping block (7) matches the size of the receiving groove (9), and the clamping block (7) is slidably connected to the receiving groove (9) up and down, and the bottom of the clamping block (7) is connected to the bottom inner wall of the receiving groove (9) via two springs (8).

5. The replaceable drilling drill bit according to claim 4, characterized in that: Both side walls of the accommodating groove (9) are provided with vertically distributed limiting grooves, the top of the limiting groove is a sealed structure, and both end bottoms of the abutting block (7) are provided with limiting blocks (10) slidably connected to the limiting grooves.

6. The replaceable drilling drill bit according to claim 4, characterized in that: The end of the pressing block (7) away from the stopper (6) is provided with a first arcuate surface (11), and the end of the sector block (14) opposite to the first arcuate surface (11) is provided with a second arcuate surface (15).

7. The replaceable drilling drill bit according to claim 1, characterized in that: The ventilation and heat dissipation structure comprises a central channel arranged in the inner cavity of the connector (12); the side wall of the connector (12) is provided with three air inlets (19) distributed in a circular array, and the air inlets (19) are connected to the central channel; the top of the connector (12) and the surface of the conical surface (16) are provided with heat dissipation holes (21), the heat dissipation holes (21) are connected to the central channel, and an arc-shaped groove (20) is provided between each two adjacent air inlets (19).

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