CN217151845U - Five-wing flat-top nine-tooth anti-tuberculosis drill bit - Google Patents

Abstract

The utility model discloses a five-wing flat-top nine-tooth anti-tuberculosis drill bit, which comprises a drill bit base body, a base body connecting part, a drill bit body connecting part and drill bit teeth, wherein the drill bit teeth are divided into an external tangent group and an internal tangent group; the cutting device comprises a base body connecting part, a cutting head connecting part and a cutting head connecting part, wherein the base body connecting part is arranged at the upper part of the base body connecting part; embedding an internally tangent group of drill bit teeth on the drill bit base body, wherein the internally tangent group of drill bit teeth comprises four drill bit teeth which are respectively a sixth cutting head, a seventh cutting head, an eighth cutting head and a ninth cutting head; the problem of when mining high gas mine, rock hardness is high, and drill bit wearing and tearing are serious, are difficult to creep into in the in-process of creeping into is solved.

Description

Five-wing flat-top nine-tooth anti-tuberculosis drill bit

Technical Field

The utility model relates to a drill bit, concretely relates to five wings nine anti tuberculosis drill bits of flat top.

Background

In China, the most hard rock in Guizhou province is formed in a rock and a coal bed, more yellow iron nodules are formed in the rock and the coal bed, many coal mines have difficulty in drilling due to gas extraction, normal production of the coal mines is greatly influenced, most typically, mine areas in Jinsha county in the Bijie area are mine areas in Jinsha county, the mines basically belong to high gas mines or outburst mines, the most concentrated yellow iron nodules in the wells are coal mines in the Xinsha county and in various coal mines in sandy towns, the hardness of the yellow iron nodules is basically the same as that of basalt and granite, only friction sparks are easily generated when the yellow iron nodule rock layer is drilled, and the friction temperature flash phenomenon can cause high-temperature micro-carbonization reaction of a blade of a diamond composite sheet, so that the diamond sheet forms friction fatigue.

From coal mine mechanical mining to current intelligent upgrading, the underground drilling and mining machinery continues to use an underground hydraulic drilling machine for many years, the original drill bits are used all the time, the drill bits are used for ten years in coal mines, tooth arrangement change is not caused all the time, the service life of drilling holes of more than 100 meters cannot be achieved for mines with higher hardness, and the large number of high-power crawler drilling machines are introduced until the countries begin to be eliminated in the previous year, so that the propelling torque and the detecting and releasing distance of the advanced drilling machines are greatly improved, for example, a 4200 crawler drilling machine has the effective drilling distance of 400 meters, and the propelling pressure of the drilling machine is less than or equal to 22 MPa. The introduction of the drilling machines changes the progress of gas extraction in the coal mine.

The high gas mine is a gas drainage and underground water exploration in a coal mine, which is carried out in advance in big national coal enterprises twenty years ago, thousands of people are accumulated in underground workers who die from gas outburst accidents in the whole country for decades, a large amount of manpower and material resources are input in the country, a plurality of national gas control scientific research institutions are also set, such as national gas control centers established in western coal academy, Chongqing coal academy, Shenyang coal academy and Anhui Huainan Ministry, all mines receive gas control schemes of all supervision departments and scientific research units at present, and the accidents which do not occur, for example, 8 deaths caused by the gas outburst of the east wind mine in 4.20 Jinsha county, 8 deaths caused by the gas outburst of the subordinate mine in 6.4 Henan province, no casualties caused by the gas outburst of the coal mine in 6.5 Heilongjiang province, 8 deaths, and the like, the best scheme for completely preventing the gas accident of the coal mine cannot be found in the country.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a five wings nine anti tuberculosis drills of tooth on flat top, when solving and exploiting the high gas mine, the rock hardness is high, and drill bit wearing and tearing are serious, are creeping into the problem of difficulty.

In order to solve the technical problem, the utility model adopts the following technical scheme:

a five-wing flat-top nine-tooth anti-tuberculosis drill bit comprises a drill bit base body, a base body connecting part, a drill bit body connecting part and drill bit teeth, wherein the drill bit teeth are divided into an externally tangent group and an internally tangent group; the drill bit base body is arranged to be a solid cylindrical table, the top of the excircle of the drill bit base body is annularly provided with a base body connecting part, the base body connecting part is arranged to be a quarter circle, and circumscribed groups of drill bit teeth are arranged on the base body connecting part in a centrosymmetric manner; the cutting device comprises a base body connecting part, a cutting head connecting part and a cutting head connecting part, wherein the base body connecting part is arranged at the upper part of the base body connecting part; embedding an internally tangent group of drill bit teeth on the drill bit base body, wherein the internally tangent group of drill bit teeth comprises four drill bit teeth which are respectively a sixth cutting head, a seventh cutting head, an eighth cutting head and a ninth cutting head; the third cutting head is flush with the seventh cutting head, the sixth cutting head is arranged centrosymmetrically to the seventh cutting head, the eighth cutting head is arranged perpendicular to the seventh cutting head, and the ninth cutting head is arranged at right angles to the eighth cutting head; wherein the six cutting heads and the seventh cutting head are arranged outside the drill base body, one half occupies the drill base body, and the other half occupies the base body connecting part; the eighth cutting head and the ninth cutting head are arranged on the drill bit base body; and a cooling hole is arranged in the center of the drill bit base body and penetrates through the drill bit base body.

Further, the inner cutting group of drill bit teeth comprises a drill bit tooth seat and drill bit teeth; the front end of the drill cutter tooth holder is cylindrical, the rear end of the drill cutter tooth holder is conical, the drill cutter tooth holder is fixedly arranged on the drill bit base body, and a drill cutter tooth fixing seat matched with the drill cutter teeth is arranged at the front end of the drill cutter tooth holder; the drill bit teeth are arranged into cylindrical rings and embedded on the drill bit tooth fixing seats.

Furthermore, the drill bit tooth seat of the internal cutting group of drill bit teeth is obliquely embedded on the drill bit basal body.

Furthermore, the externally tangent group of drill bit teeth comprise a drill bit tooth seat, drill bit teeth and a reinforced fixed seat; the front end of the drill bit tooth holder is cylindrical, and the rear end of the drill bit tooth holder is in a shape of a rectangle; the front end of the drill bit tooth seat is provided with a drill bit tooth fixing seat matched with the drill bit teeth; the drill cutter teeth are arranged into a cylindrical ring and embedded on the drill cutter tooth fixing seat; the drill bit tooth holder is fixedly arranged at the top of the reinforced fixing seat, the reinforced fixing seat is fixedly arranged on the base body connecting portion and embedded into one third of the thickness of the reinforced fixing seat, and the concave arc-shaped portion of the drill bit body connecting portion is arranged between the reinforced fixing seat and the base body connecting portion.

Furthermore, the drill bit tooth holder of the circumscribed group of drill bit teeth is horizontally arranged on the base body connecting part.

Furthermore, a slag discharge groove is formed between the drill bit tooth seats of every two circumscribed groups of drill bit teeth.

Furthermore, an inclined slag guide table is arranged at the front end of the drill cutter tooth seat, and the slag guide table is positioned right below the front end of the drill cutter tooth.

Furthermore, two diameter-protecting grooves are formed in the side face of the reinforcing fixing seat.

Furthermore, the part of the same-rail same-horizontal excircle cutting line of the inner cutting group is 3-5mm higher than that of the same-rail same-horizontal excircle cutting line of the outer cutting group.

Furthermore, the drill bit base body is made of high-strength steel, and the drill bit teeth are made of diamond and are welded with the drill bit base body.

Compared with the prior art, the beneficial effects of the utility model are that:

according to the device, through the design from outside to inside, the secondary circle of the center of an internal cutting group is crossed without a dead angle full cutting surface, the eighth cutting head is overlapped with the independent cutting tracks of the sixth cutting head and the seventh cutting head, the ninth cutting head is overlapped with the full cutting track of the eighth cutting head, and in the hole-forming drilling process, nine distributed teeth are mutually assisted to share the propelling force and the frictional heat effect of a drilling machine; this device arranges through reasonable tooth number, and the tooth position is arranged, and corresponding row's sediment heat dissipation design, the effectual life that has improved, the effectual in-process that has reduced at the brill, alleviate the friction strength and the heat effect of compound piece, reduce in the brill in with the diamond blade microcarbonization reaction that the yellow iron tuberculosis caused because of the friction flash temperature and the friction fatigue in diamond piece high strength work, it is main that this drill bit can effectual anti-tuberculosis. The device effectively avoids the problems that when a high gas mine is mined, the hardness of rocks is high, a drill bit is seriously abraded, and the drilling is difficult in the drilling process;

drawings

Fig. 1 is a top view of the present invention.

Fig. 2 is a side view of the present invention.

The drill bit comprises a drill bit base body (1), a base body connecting portion (2), a cooling hole (3), a drill bit body connecting portion (4), drill bit teeth (5), a drill bit tooth seat (6), a gauge protection groove (7), a slag guide platform (8), a slag discharge groove (9), a reinforcing fixing seat (10), a first cutting head (A1), a second cutting head (A2), a third cutting head (A3), a fourth cutting head (A4), a fifth cutting head (A5), a sixth cutting head (B1), a seventh cutting head (B2), an eighth cutting head (C1) and a ninth cutting head (D1).

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1:

the proposal provides a structure mainly used for breaking yellow iron nodules, the effective pore-forming diameter of the device is less than or equal to 93mm and more than or equal to 85mm, and the optimal diameter of the breaking nodule drill is phi 85mm

The drill bit mainly comprises a drill bit base body 1, a base body connecting part 2, a drill bit body connecting part 4 and drill bit teeth. In the device, the drill bit teeth are divided into an external cutting group and an internal cutting group. For convenience in installation, the drill bit base body 1 is a solid cylindrical table, for convenience in smooth connection and for convenience in slag discharge in the use process, the base body connecting portion 2 is annularly arranged at the top of the outer circle of the drill bit base body 1, the base body connecting portion 2 is in a quarter-circle shape, and circumscribed groups of drill bit teeth are symmetrically arranged on the base body connecting portion 2 in the center. As shown in the figure, the circumscribed group of the drill bit teeth of the device is symmetrically arranged into five, namely a first cutting head a1, a second cutting head a2, a third cutting head A3, a fourth cutting head a4 and a fifth cutting head a5, and a drill bit body connecting part 4 is arranged between the drill bit teeth and the base body connecting part 2; in the figure, the cuts produced by the first cutting head a1, the second cutting head a2, the third cutting head A3, the fourth cutting head a4 and the fifth cutting head a5 are radial and excircle cuts of the same-level excircle cutting line on the outer side. As shown in the figure, the device is characterized in that an inner cutting group of drill bit teeth are embedded on a drill bit base body 1, the inner cutting group of drill bit teeth comprises four drill bit teeth, namely a sixth cutting head B1, a seventh cutting head B2, an eighth cutting head C1 and a ninth cutting head D1, wherein the sixth cutting head B1 and the seventh cutting head B2 are cylindrical cutting lines with the same inner sides and the same rail and the same level. The eighth cutting head C1 is a third medium-circle-waist-line cutting track of the hole. The ninth cutting head D1 is a hole forming circle center cutting trajectory. The tooth arrangement design of the drill bit is designed from outside to inside. Firstly, determining the diameter of an outer circle to be cut, determining the diameter of the outer circle for phi 85mm according to the design, designing a cutting drill tooth 5, after designing the tooth shape, arranging the outer side of the cutting drill tooth to be cut along the radial outer circle of the same-rail same-horizontal outer circle cutting line, setting the cutting drill tooth as five teeth, then designing the inner teeth according to the outer teeth, arranging a third cutting head A3 and a seventh cutting head B2 of the cutting drill tooth device in a flush manner, arranging a sixth cutting head B1 and a seventh cutting head B2 in a central symmetry manner, arranging an eighth cutting head C1 vertical to the seventh cutting head B2, and arranging a ninth cutting head D1 and an eighth cutting head C1 at an angle of 45 degrees; wherein the six cutting head B1 and the seventh cutting head B2 are arranged outside the drill base 1, half occupying the drill base 1 and the other half occupying the base coupling portion 2; the eighth cutting head C1 and the ninth cutting head D1 are provided on the drill base 1.

In the design, the tooth distribution design principle of the sixth cutting head B1, the seventh cutting head B2, the eighth cutting head C1 and the ninth cutting head D1 is that the centers of the teeth are intersected with each other without dead angles and full cutting surfaces, the eighth cutting head C1 is overlapped with the cutting tracks of the sixth cutting head B1 and the seventh cutting head B2 independently, the ninth cutting head D1 is overlapped with the cutting tracks of the full cutting circle of the eighth cutting head C1, and the distributed nine teeth help each other in hole forming drilling and share the propelling force and the frictional heat effect of the drilling machine. For further cooling of the drill, a cooling hole 3 is provided in the center of the drill base 1, and the cooling hole 3 penetrates through the drill base 1. The service life of the device is 1.5 times that of a common four-wing flat-top eight-ruler drill bit in the use process. The traditional research aiming at the rare rock metal nodule on the earth surface and the particularly hard rock results in the solution through years of research of the company, and the solution mainly comprises the following four points:

(1) the hole diameter of the drilled hole is reduced;

(2) the density of the teeth (diamond) is increased;

(3) the number of the wing teeth is increased;

(4) improving the cooling holes and increasing the width and the depth of the slag discharging groove;

however, the pore diameter of the drilled hole is not necessarily reduced as much as possible, and must be ensured to a certain extent; the density design of the teeth (diamonds) is a very complicated process, the area of the whole drill bit cannot be arranged, the area of the drill bit is not allowed, the process is not allowed, and the operation is not allowed. The area is fixed, the diamond teeth cannot be completely arranged, the drilling is carried out by considering heat dissipation, friction loss, arrangement of cutting force and the like, the random densification is impossible, the arrangement is too dense, the arrangement is not practical in the drilling operation, and materials are wasted, so that the effect cannot be achieved necessarily. Similarly, the increase of the number of the wing teeth is the same reason, and any increase can avoid two points, namely, slag discharge and heat dissipation, so that the key points are to improve the cooling holes and increase the width and the depth of the slag discharge groove. This device arranges through reasonable tooth number, the tooth position is arranged, corresponding row's sediment heat dissipation design, the effectual life that has improved, the effectual in-process that has reduced at the brill, alleviate the friction strength and the fuel factor of compound piece, reduce in the brill with the diamond blade microcarbonization reaction that the yellow iron tuberculosis caused because of the friction flash temperature and the friction fatigue in the diamond piece high strength work, when the effectual high gas mine of having avoided is exploited, the rock hardness is high, drill bit wearing and tearing are serious, the problem that is difficult to creep into at the in-process of creeping.

Example 2:

on the basis of the above embodiment, in the present embodiment, a design of the bit teeth is that the inner cutting group bit teeth include a bit tooth seat 6 and bit teeth 5; in order to balance cutting force, the front end of the drill cutter tooth holder 6 is cylindrical, the rear end of the drill cutter tooth holder is conical, so that cutting force during cutting can be transmitted to the drill bit base body 1 from the tooth edge to be dispersed, the drill cutter tooth holder 6 needs to be fixedly arranged on the drill bit base body 1, the front end of the drill cutter tooth holder 6 is provided with a drill cutter tooth fixing seat matched with the drill cutter teeth 5, the drill cutter tooth fixing seat is mainly used for square connection, the strength of the cutting edge is guaranteed, heat dissipation is needed, friction loss is guaranteed to be reduced as far as possible, the drill cutter teeth 5 are arranged into a cylindrical ring, and the drill cutter teeth 5 are embedded on the drill cutter tooth fixing seat.

Example 3:

on the basis of the above embodiment, in the present embodiment, the cutter tooth seats 6 of the inner tangent group of drill teeth are obliquely embedded on the drill base body 1, and a specific arrangement is that the drill welding elevation angle is set to be 15 degrees, the outer side angle is set to be 3 degrees, and the wing-to-wing angle is set to be 60 degrees.

Example 4:

on the basis of the above embodiments, in this embodiment, one structure for facilitating slag discharge and heat dissipation is to divide the circumscribed set of drill bits into the drill bit holder 6, the drill bit teeth 5 and the reinforced fixing seat 10. In the design, the balance of cutting force is that the front end of the drill bit tooth holder 6 is arranged to be cylindrical, and the rear end is arranged to be in a shape; the front end of the drill bit tooth seat 6 is provided with a drill bit tooth fixing seat matched with the drill bit teeth 5; the drilling cutter teeth 5 are arranged to be cylindrical rings, and the drilling cutter teeth 5 are embedded on the drilling cutter tooth fixing seat. In the excircle cutting process, circumscribed group drill bit tooth bears great radial cutting force, consequently, need strengthen fixing base 10, the enhancement fixing base 10 of this design sets up to the rectangle of being the same width with drill bit toothholder 6, drill bit toothholder 6 is fixed to be set up at the top of strengthening fixing base 10, for convenient row's sediment and heat dissipation, strengthen fixing base 10 fixed setting on base member connecting portion 2 and imbed the third of strengthening fixing base 10 thickness and guaranteed the intensity of connecting promptly, can form a slag groove 9 again between the drill bit toothholder 6 of per two circumscribed group drill bit teeth, make things convenient for row's sediment drill bit body connecting portion 4 indent arc to set up between strengthening fixing base 10 and base member connecting portion 2, the whole foreign steamer storehouse of drill bit that forms like this is smooth arc, just make things convenient for the discharge of sediment like this at the in-process of arranging the sediment. Meanwhile, the sheet heat dissipation is formed, the heat dissipation area is increased, and the heat dissipation is convenient.

Example 5:

on the basis of the above embodiment, in this embodiment, a further slag discharging and heat dissipating structure is that the drill bit holder 6 of the circumscribed group of drill bit teeth is horizontally arranged on the substrate connecting portion 2, an inclined slag guiding table 8 is arranged at the front end of the drill bit holder 6, the slag guiding table 8 is located right below the front end of the drill bit teeth 5, and the cutting line portion of the same-orbit and same-horizontal outer circle of the inscribed group is 2mm, 3mm, 4mm or 5mm higher than the same-orbit and same-horizontal outer circle of the circumscribed group, preferably 3mm, and the 3mm partition wall can automatically fall into 3mm small strip-shaped particles or 3mm small piece-shaped particles in the shallow-to-deep friction of the drill bit, so as to facilitate slag discharging.

. According to the device, a wide and deep slag discharge port is reserved among the wings of the first cutting head A1, the second cutting head A2, the third cutting head A3, the fourth cutting head A4 and the fifth cutting head A5, and a large-diameter cooling hole is reserved between the wings of the eighth cutting head C1 and the wings of the ninth cutting head D1, so that the device can provide heat dissipation service for drilling, namely convenient slag discharge and convenient heat dissipation.

Example 6:

on the basis of the above embodiments, in this embodiment, in order to increase the heat dissipation effect and also to discharge a part of heat to protect the outer circle cutting, two gauge grooves 7 are provided on the side surface of the reinforcing fixing seat 10.

Example 7:

on the basis of the above embodiment, in the present embodiment, one material is selected to provide the drill base body 1 as high-strength steel, and the cutter teeth 5 are made of diamond and welded. The mechanism design combined with the device can normally drill under the propelling force of 13 MPa without damaging the drill teeth.

The drill bit can generate a large amount of heat energy and heat effect in the friction between the drill bit and the rock no matter water cooling drilling or air cooling drilling is adopted, the heat effect is the process that the edge of the drill bit is slowly weakened to the center of the drill bit, side teeth are impacted and stressed greatly, the device adopts the five-wing five-tooth same-track layout, the limit bearing capacity of each diamond can be shared, nine teeth in the drill bit work, and the working heat energy of each diamond also comprises a strong friction high heat semicircular area and a weak friction low heat semicircular area.

All drills are represented by energy weakening from outside to inside, the external teeth are stressed most (a first cutting head A1, a second cutting head A2, a third cutting head A3, a fourth cutting head A4 and a fifth cutting head A5), the inner two rings are stressed secondly (a sixth cutting head B1 and a seventh cutting head B2), and the inner three (an eighth cutting head C1) and the inner four (a ninth cutting head D1) are stressed lightest.

The harder the rock that the drill bit meets is bored the heat effect that produces just bigger, and if the drill bit meets the yellow iron tuberculosis, the heat effect that produced is just bigger, and the flash of temperature spark that grinds the production can cause the micro-carbonization of diamond piece cutting edge and form drill bit friction fatigue, friction failure, and this device can effectually alleviate and avoid.

Reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," "a preferred embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described in general terms in this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the disclosure to effect such feature, structure, or characteristic in connection with other embodiments.

Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.

Claims (10)

1. The utility model provides a nine tooth anti-tuberculosis drill bits of five wings flat tops which characterized in that: the drill bit comprises a drill bit matrix (1), a matrix connecting part (2), a drill bit body connecting part (4) and drill bit teeth, wherein the drill bit teeth are divided into an externally tangent group and an internally tangent group; the drill bit base body (1) is arranged to be a solid cylindrical table, the top of the excircle of the drill bit base body (1) is annularly provided with a base body connecting part (2), the base body connecting part (2) is arranged to be a quarter circle, and circumscribed groups of drill bit teeth are symmetrically arranged on the base body connecting part (2) in the center; the circumscribed group of drill bit teeth are symmetrically arranged into five parts, namely a first cutting head (A1), a second cutting head (A2), a third cutting head (A3), a fourth cutting head (A4) and a fifth cutting head (A5), and a drill bit body connecting part (4) is arranged between each drill bit tooth and the base body connecting part (2); an internally tangent group of drill bit teeth are embedded on the drill bit base body (1), and the internally tangent group of drill bit teeth comprise four drill bit teeth which are respectively a sixth cutting head (B1), a seventh cutting head (B2), an eighth cutting head (C1) and a ninth cutting head (D1); the third cutting head (a 3) is arranged flush with a seventh cutting head (B2), the sixth cutting head (B1) is arranged centrosymmetrically to the seventh cutting head (B2), the eighth cutting head (C1) is arranged perpendicular to the seventh cutting head (B2), and the ninth cutting head (D1) is arranged at 45 degrees to the eighth cutting head (C1); wherein the sixth cutting head (B1) and the seventh cutting head (B2) are arranged outside the drill base body (1), half occupying the drill base body (1) and the other half occupying the base coupling portion (2); the eighth cutting head (C1) and the ninth cutting head (D1) are arranged on the drill base body (1); a cooling hole (3) is formed in the center of the drill bit base body (1), and the cooling hole (3) penetrates through the drill bit base body (1).

2. The five-wing flat-top nine-tooth anti-tuberculosis drill bit according to claim 1, characterized in that: the inner cutting group of drill bit teeth comprise a drill bit tooth seat (6) and drill bit teeth (5); the front end of the drill cutter tooth holder (6) is cylindrical, the rear end of the drill cutter tooth holder is conical, the drill cutter tooth holder (6) is fixedly arranged on the drill bit base body (1), and a drill cutter tooth fixing seat matched with the drill cutter teeth (5) is arranged at the front end of the drill cutter tooth holder (6); the drilling cutter teeth (5) are arranged to be cylindrical rings, and the drilling cutter teeth (5) are embedded on the drilling cutter tooth fixing seat.

3. The five-wing flat-top nine-tooth anti-tuberculosis drill bit according to claim 2, characterized in that: and the drilling tool tooth seat (6) of the internal cutting group of drill bit teeth is obliquely embedded on the drill bit base body (1).

4. The five-wing flat-top nine-tooth anti-tuberculosis drill bit according to claim 1, characterized in that: the externally tangent group of drill bit teeth comprise a drill bit tooth seat (6), drill bit teeth (5) and a reinforcing fixed seat (10); the front end of the drill bit tooth holder (6) is cylindrical, and the rear end of the drill bit tooth holder is in a shape of a rectangle; the front end of the drill bit tooth seat (6) is provided with a drill bit tooth fixing seat matched with the drill bit teeth (5); the drilling cutter teeth (5) are arranged into cylindrical rings, and the drilling cutter teeth (5) are embedded on the drilling cutter tooth fixing seats; strengthen fixing base (10) and set up to the rectangle of being the same width with drill bit toothholder (6), drill bit toothholder (6) are fixed to be set up at the top of strengthening fixing base (10), strengthen fixing base (10) and fixed the setting on base member connecting portion (2) and the third of embedding and strengthening fixing base (10) thickness, and drill bit body connecting portion (4) indent arc sets up between strengthening fixing base (10) and base member connecting portion (2).

5. The five-wing flat-top nine-tooth anti-tuberculosis drill bit according to claim 1, characterized in that: and the drill bit tooth seat (6) of the circumscribed group of drill bit teeth is horizontally arranged on the base body connecting part (2).

6. The five-wing flat-top nine-tooth anti-tuberculosis drill bit according to claim 5, characterized in that: a slag discharge groove (9) is formed between the drill bit tooth seats (6) of every two circumscribed groups of drill bit teeth.

7. The five-wing flat-top nine-tooth anti-tuberculosis drill bit according to claim 2 or 4, wherein: an inclined slag guide platform (8) is arranged at the front end of the drill cutter tooth seat (6), and the slag guide platform (8) is positioned right below the front end of the drill cutter tooth (5).

8. The five-wing flat-top nine-tooth anti-tuberculosis drill bit according to claim 4, wherein: two diameter-protecting grooves (7) are arranged on the side surface of the reinforcing fixed seat (10), and alloy diameter-protecting strips are arranged in the diameter-protecting grooves (7).

9. The five-wing flat-top nine-tooth anti-tuberculosis drill bit according to claim 1, characterized in that: the same-rail same-horizontal excircle cutting line part of the inner cutting group is 3-5mm higher than the same-rail same-horizontal excircle cutting line part of the outer cutting group.

10. The five-wing flat-top nine-tooth anti-tuberculosis drill bit according to claim 2, characterized in that: the drill bit base body (1) is made of high-strength steel, the drill bit teeth (5) are made of diamonds, and the drill bit base body and the drill bit teeth are welded.

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