CN212671567U

CN212671567U - Four-wing arc angle ten-tooth diamond bit

Info

Publication number: CN212671567U
Application number: CN202021801823.1U
Authority: CN
Inventors: 钟建设; 刘湘
Original assignee: Jinsha Rende Drilling Tools Co Ltd
Current assignee: Jinsha Rende Drilling Tools Co Ltd
Priority date: 2020-08-25
Filing date: 2020-08-25
Publication date: 2021-03-09
Anticipated expiration: 2030-08-25

Abstract

The utility model discloses a four-wing arc-angle ten-tooth diamond drill bit, which comprises a drill bit body; the drill bit body is provided with a first blade and a second blade; the first blade comprises two blades which are symmetrically arranged on the bit body; the two second blades are symmetrically arranged on the bit body; the first blade is provided with a first cutting tooth and a second cutting tooth; the second blade is provided with a first cutting tooth, a second cutting tooth and a third cutting tooth; the second cutting teeth are welded with the first cutting teeth in an overlapping mode; the third cutting teeth are central circular cutting teeth; the utility model discloses the technical scheme who takes has solved current drill bit spoilage height in very hard or soft or hard stratified rock and has leaded to the great problem of loss cost.

Description

Four-wing arc angle ten-tooth diamond bit

Technical Field

The utility model relates to a drilling equipment technical field, concretely relates to ten tooth diamond bit of four wing arc angles.

Background

Two of the most difficult types of formation rock to attack: one is particularly hard rock such as: basalt and granite, breccia, and the like; secondly, the soft and hard irregular staggered rock strata are as follows: gold sand mine area in the Guizhou Pitch area. National key rock experimental research bases are generally hard layers of integrity, such as: in contrast, in the Songasan mining area in Qijiang Chongqing, the most difficult rock layer in China is also the gold sand mining area, because the ultra-hard rock in this area contains yellow iron nodules. The requirements for the performance of the diamond composite sheet of the drilling tool are wear resistance and impact resistance, and high-price cobalt-removed petroleum sheets and the like are generally adopted. The drilling speed of the second-class soft-hard cross stratum is in direct proportion to the hardness of the lithology, the drilling speed of soft-hard layered rock cannot be controlled in operation, and the diamond piece is easy to crack at the soft-hard junction, so that the adopted diamond composite piece is of an impact-resistant type. Because the hardness of the rock of each mine in the gold sand mining area is commonly about F6, the gold sand mining area belongs to the hardest mining area of coal mine rocks in China, most importantly, the hardness of underground rocks is alternately irregular, a certain amount of yellow iron nodules are contained in a coal bed and the rocks, the hardness of the nodules is F6.5, the difficulty of drilling is very high in reference to the hardness F5.5 of steel, holes are formed like copper wall iron walls, the conventional drill bits used in the mining area are all traditional 7-tooth drill bits, the damage rate of edge teeth of diamond drill bits is 80%, and the average drill bit loss per meter of drilled holes exceeds 25 yuan/meter.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a four wings arc angle ten tooth diamond bit, solve current drill bit spoilage height and lead to the great problem of loss cost in very hard or soft or hard stratified rock.

In order to solve the technical problem, the utility model adopts the following technical scheme: a four-wing arc-angle ten-tooth diamond drill bit comprises a drill bit body; the drill bit body is provided with a first blade and a second blade; the first blade comprises two blades which are symmetrically arranged on the bit body; the two second blades are symmetrically arranged on the bit body; the first blade is provided with a first cutting tooth and a second cutting tooth; the second blade is provided with a first cutting tooth, a second cutting tooth and a third cutting tooth; the second cutting teeth are welded with the first cutting teeth in an overlapping mode; the third cutting teeth are central circular cutting teeth;

further, an included angle between the first blade and the second blade is 90 degrees;

further, the second cutting tooth is welded with the first cutting tooth in an overlapping mode for 3 mm;

further, the first cutting tooth, the second cutting tooth and the third cutting tooth are welded by facing upward at an angle of 15 degrees by adopting a diamond compact;

further, the diameter of the diamond compact is 13 mm; the thickness of the diamond compact is 8 mm;

furthermore, a water hole is formed in the drill body;

the further technical proposal is that the water holes comprise four water holes which are symmetrically arranged.

Compared with the prior art, the beneficial effects of the utility model are one of following at least:

1. the four blades are beneficial to reducing the breakage of diamond compacts caused by the side teeth under the pressure rotation torsion and the rotation speed of the drilling machine;

2. the first cutting tooth is positioned at the outermost ring, the second cutting tooth is positioned in the middle, the third cutting tooth is positioned at the center, and the second cutting tooth and the first cutting tooth are welded in an overlapping mode, so that the overload of the external tooth in the pressure and the resistance of a drilling machine is reduced, and the friction force of a drill bit in rock is reduced from outside to inside, and the pressure and the friction force borne by the side teeth of the drill bit are the maximum, so that the probability that the drill tooth is abraded is smaller as the tooth is distributed towards the center of a drill hole by adopting a high-density multi-tooth layout;

3. the third cutting teeth are central circular cutting teeth and are not welded with the second cutting teeth in an overlapping mode, so that cutting on the central ring layer is facilitated, and the cutting efficiency is improved;

4. the utility model discloses the technical scheme who takes can have the dead angle and cut 94mm rock pore face comprehensively, and the drill bit breakage rate has obtained very big reduction, and the drill bit loss will generally be below 13 yuan/meter.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the drawings: 1. a bit body; 2. a first blade; 3. a second blade; 4. a first cutting tooth; 5. a second cutting tooth; 6. a third cutting tooth; 7. a water hole.

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: as shown in figure 1, the four-wing arc-angle ten-tooth diamond drill bit comprises a drill bit body 1; a first blade 2 and a second blade 3 are arranged on the bit body 1; the first blade wings 2 comprise two blades and are symmetrically arranged on the bit body 1; the two second blades 3 are symmetrically arranged on the bit body 1; the first blade 2 is provided with a first cutting tooth 4 and a second cutting tooth 5; the second blade 3 is provided with a first cutting tooth 4, a second cutting tooth 5 and a third cutting tooth 6; the second cutting teeth 5 are welded with the first cutting teeth 4 in an overlapping mode; the third cutting tooth 6 and the second cutting tooth 5 are welded in an overlapping mode; in the embodiment, the first blade 2 and the second blade 3 are connected with the bit body 1 in a conventional fixed connection mode, and any reasonable fixed connection mode can be selected according to needs; in this embodiment, the first cutting tooth 4, the second cutting tooth 5, and the third cutting tooth 6 are all welded to the first blade 2 or the second blade 3 by using conventional welding equipment, and any one of reasonable welding types and equipment can be selected as required. In the embodiment, the first cutting teeth 4 comprise four cutting teeth which are positioned at the outermost circle of the bit body 1 and used for cutting rock in an encrypted manner at the same angle and the same level; the second cutting teeth 5 comprise four middle rings which are positioned on the bit body 1, are used for assisting in cutting rocks for a second step and are also used for performing second horizontal double-track circular cutting; the third cutting tooth 6 is located at the innermost circle and is a third horizontal central rock cut.

The four blades are beneficial to reducing the breakage of diamond compacts caused by the side teeth under the pressure rotation torsion and the rotation speed of the drilling machine; the first cutting tooth 4 is positioned at the outermost ring, the second cutting tooth 5 is positioned in the middle, the third cutting tooth 6 is positioned at the center, the second cutting tooth 5 is welded with the first cutting tooth 4 in an overlapping mode, and the third cutting tooth 6 is welded with the second cutting tooth 5 in an overlapping mode, so that overload of external teeth in pressure and resistance of a drilling machine is reduced, and the friction force of a drill bit in rock is reduced from outside to inside, and the pressure and the friction force borne by the edge teeth of the drill bit are maximum, so that the outer ring high-density multi-tooth layout is adopted, and the probability of abrasion of the drill teeth is smaller when the teeth are distributed towards the center of a drill hole; the third cutting teeth 6 are central circular cutting teeth, are not welded with the second cutting teeth in an overlapping mode, are beneficial to cutting in a central ring layer, and are beneficial to improving the cutting efficiency; the utility model discloses the technical scheme who takes, the drill bit breakage rate has obtained very big reduction, and the drill bit loss will generally be below 13 yuan/meter.

The included angle between the first blade 2 and the second blade 3 is 90 degrees; in the embodiment, the included angle between the first blade 2 and the second blade 3 is 90 degrees, which is beneficial to the staggered arrangement of the first blade 2 and the second blade 3 on the bit body 1, the reasonable arrangement of the first cutting tooth 4, the second cutting tooth 5 and the second third cutting tooth 6, and the improvement of the chip cutting effect.

The second cutting tooth 5 is welded with the first cutting tooth 4 in an overlapping mode by 3 mm; the principle of overlap welding is to reduce the overload of external tooth in rig pressure and resistance, and the frictional force of drill bit in the rock is the process of weakening from outside to inside, and the pressure and the frictional force that the side tooth of drill bit bore are the biggest, and the more toward the drilling center tooth arrangement, the probability that the drilling tooth received the wearing and tearing is just littleer, is favorable to reducing the overload of external tooth in rig pressure and resistance, is favorable to inwards sharing the pressure and the heat effect of first cutting tooth 4.

The first cutting tooth 4, the second cutting tooth 5 and the third cutting tooth 6 are welded by facing upward at 15 degrees by adopting a diamond compact; the elevation angle welding is adopted, so that the rock breaking effect of the cutting teeth is guaranteed, the cutting teeth are easily damaged due to too large elevation angle, and the force is not good enough in the rock breaking process due to too small elevation angle, so that the elevation angle of 15 degrees is optimal.

The diameter of the diamond compact is 13 mm; the thickness of the diamond compact is 8 mm; the diamond composite sheet with the specification is beneficial to ensuring the rock breaking effect and reducing the abrasion.

A water hole 7 is formed in the drill body 1; the water holes 7 are symmetrically arranged and comprise four water holes; the cooling mode of four blades and four holes is adopted, so that the heat energy in the drilling process is greatly discharged, slag is discharged from four grooves to the maximum extent, and the rock breaking and cutting effects are improved.

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

1. A four-wing arc-angle ten-tooth diamond drill bit comprises a drill bit body (1); the method is characterized in that: a first blade (2) and a second blade (3) are arranged on the bit body (1); the first blades (2) comprise two blades which are symmetrically arranged on the bit body (1); the two second blades (3) are symmetrically arranged on the bit body (1); the first blade (2) is provided with a first cutting tooth (4) and a second cutting tooth (5); the second blade (3) is provided with a first cutting tooth (4), a second cutting tooth (5) and a third cutting tooth (6); the second cutting teeth (5) are welded with the first cutting teeth (4) in an overlapping mode; the third cutting tooth (6) is a central circular cutting tooth.

2. The four-wing arc-angle ten-tooth diamond drill bit according to claim 1, characterized in that: the included angle between the first blade (2) and the second blade (3) is 90 degrees.

3. The four-wing arc-angle ten-tooth diamond drill bit according to claim 1, characterized in that: the second cutting tooth (5) and the first cutting tooth (4) are welded in an overlapping mode for 3 mm.

4. The four-wing arc-angle ten-tooth diamond drill bit according to claim 1, characterized in that: first cutting tooth (4), second cutting tooth (5) and third cutting tooth (6) adopt the diamond compact piece to face upward 15 welding.

5. The four-wing arc-angle ten-tooth diamond drill bit according to claim 1, characterized in that: the diameter of the diamond compact is 13 mm; the thickness of the diamond compact is 8 mm.

6. The four-wing arc-angle ten-tooth diamond drill bit according to claim 1, characterized in that: a water hole (7) is arranged on the drill body (1).

7. The four-wing arc-angle ten-tooth diamond drill bit according to claim 6, characterized in that: the water holes (7) are symmetrically arranged and comprise four water holes.