CN212985115U

CN212985115U - Three-wing arc angle nine-tooth diamond bit

Info

Publication number: CN212985115U
Application number: CN202021796498.4U
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: 2021-04-16
Anticipated expiration: 2030-08-25

Abstract

The utility model discloses a three-wing arc angle nine-tooth diamond drill bit, which comprises a drill bit body; the drill bit body is provided with a first blade and two second blades; the first 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; a fourth cutting tooth, a fifth cutting tooth and a sixth cutting tooth are arranged on the second blade; the fifth cutting tooth and the fourth cutting tooth are welded in an overlapping mode; the sixth cutting tooth and the fifth cutting tooth are welded in an overlapping mode; 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

Three-wing arc angle nine-tooth diamond bit

Technical Field

The utility model relates to a drilling equipment technical field, concretely relates to nine tooth diamond bit of three wing arc angle.

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, 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 three-wing arc angle nine-tooth diamond drill bit comprises a drill bit body; the drill bit body is provided with a first blade and two second blades; the first 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; a fourth cutting tooth, a fifth cutting tooth and a sixth cutting tooth are arranged on the second blade; the fifth cutting tooth and the fourth cutting tooth are welded in an overlapping mode; the sixth cutting tooth and the fifth cutting tooth are welded in an overlapping mode;

further, an included angle between the first blade and the second blade is 120 degrees; the included angle between the two first blade wings is 120 degrees;

further, the second cutting teeth are welded with the first cutting teeth in an overlapping mode by 1 mm;

further, the fifth cutting tooth and the fourth cutting tooth are welded in an overlapping mode for 2 mm;

further, the sixth cutting tooth and the fifth cutting tooth are welded in an overlapping mode by 1 mm;

furthermore, the first cutting tooth, the second cutting tooth, the third cutting tooth, the fourth cutting tooth, the fifth cutting tooth and the sixth cutting tooth are welded by a diamond compact in an upward direction by 15 degrees;

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 three 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 layout of the three-wing nine teeth is beneficial to forming high-density circular cutting and the nine teeth are beneficial to sharing the friction propelling force and the cutting running track; the fracture and damage of the diamond compact caused by the drilling of the drill bit in the hole application are reduced, and the friction heat effect, friction fatigue or friction failure between the drill bit and the rock in the drainage construction are reduced;

2. the first cutting tooth and the fourth cutting tooth which are positioned on the outermost ring can generate high-heat effect in the drilling process, and the second cutting tooth and the fifth cutting tooth which are positioned on the second ring are respectively welded with the first cutting tooth and the fourth cutting tooth in an overlapping mode to form a second horizontal stepped auxiliary tooth, so that the pressure and the heat effect of the first cutting tooth can be favorably shared inwards, the overload of the side teeth of the drill bit in the pressure and the resistance of a drilling machine can be favorably reduced, and the damage of the drill bit can be favorably reduced;

3. the third cutting tooth that is located the center circle does not overlap with the second cutting tooth, for cutting the center rock entirely, and the sixth cutting tooth that is located the center circle overlaps with the fifth cutting tooth and welds, is favorable to further inward transmission sharing pressure and heat effect, is favorable to reducing the overload of drill bit side tooth in rig pressure and resistance, is favorable to reducing the drill bit damage.

Drawings

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

In the drawings: 1. a first blade; 2. a second blade; 3. a first cutting tooth; 4. a second cutting tooth; 5. a third cutting tooth; 6. a fourth cutting tooth; 7. a fifth cutting tooth; 8. a sixth cutting tooth; 9. a water pore; 10. a bit body.

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 FIG. 1, a three-wing arc angle nine-tooth diamond drill bit comprises a drill bit body 10; the drill body 10 is provided with a first blade 1 and two second blades 2; the first blade 1 is provided with a first cutting tooth 3, a second cutting tooth 4 and a third cutting tooth 5; the second cutting teeth 4 are welded with the first cutting teeth 3 in an overlapping mode; the third cutting teeth 3 are central circular cutting teeth; the second blade 2 is provided with a fourth cutting tooth 6, a fifth cutting tooth 7 and a sixth cutting tooth 8; the fifth cutting tooth 7 and the fourth cutting tooth 6 are welded in an overlapping mode; the sixth cutting tooth 8 and the fifth cutting tooth 7 are welded in an overlapping mode; in this embodiment, the first blade 1 and the second blade 2 are connected to the bit body 10 in a conventional fixed connection manner, and any one of reasonable fixed connection manners may be selected as required; in this embodiment, first cutting tooth 3, second cutting tooth 4 and third cutting tooth 5 all adopt conventional welding equipment welding to set up on first wing of a knife 1, and fourth cutting tooth 6, fifth cutting tooth 7 and sixth cutting tooth 8 all adopt conventional welding equipment welding to set up on second wing of a knife 2, can select arbitrary one kind reasonable welding kind and equipment as required.

The layout of the three-wing nine teeth is beneficial to forming high-density circular cutting and the nine teeth are beneficial to sharing the friction propelling force and the cutting running track; the fracture and damage of the diamond compact caused by the drilling of the drill bit in the hole application are reduced, and the friction heat effect, friction fatigue or friction failure between the drill bit and the rock in the drainage construction are reduced; the first cutting tooth 3 and the fourth cutting tooth 6 which are positioned on the outermost ring can generate high-heat effect in the drilling process, the second cutting tooth 4 and the fifth cutting tooth 7 which are positioned on the second ring are respectively welded with the first cutting tooth 3 and the fourth cutting tooth 6 in an overlapping mode to form a second horizontal step auxiliary tooth, so that the pressure and the heat effect of the first cutting tooth 3 can be favorably shared inwards, the overload of the edge teeth of the drill bit in the pressure and the resistance of a drilling machine can be favorably reduced, and the damage of the drill bit can be favorably reduced; the third cutting tooth 5 positioned in the central ring is not overlapped with the second cutting tooth 4, and is used for fully cutting the central rock, the sixth cutting tooth 8 and the fifth cutting tooth 7 positioned in the central ring are welded in an overlapping mode, so that the pressure and the heat effect are further and inwardly transferred and shared, the overload of the side teeth of the drill bit in the pressure and the resistance of the drilling machine is reduced, and the damage of the drill bit is reduced.

The included angle between the first blade 1 and the second blade 2 is 120 degrees; the included angle between the two first blade wings 1 is 120 degrees; in this embodiment, an included angle between the first blade 1 and the second blade 2 is 120 °, and an included angle between the two first blades 1 is 120 °, which is beneficial to uniform and symmetrical arrangement of the first blades 1 and the second blades 2 on the bit body 10, and is beneficial to reasonable arrangement of the first cutting teeth 3, the second cutting teeth 4, the third cutting teeth 5, the fourth cutting teeth 6, the fifth cutting teeth 7 and the sixth cutting teeth 8, and is beneficial to improvement of a chipping effect.

The second cutting tooth 4 is welded with the first cutting tooth 3 in an overlapping mode by 1 mm; the fifth cutting tooth 7 and the fourth cutting tooth 6 are welded in an overlapping mode for 2 mm; the sixth cutting tooth 8 and the fifth cutting tooth 7 are welded in an overlapping mode by 1 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 3.

The first cutting tooth 3, the second cutting tooth 4, the third cutting tooth 5, the fourth cutting tooth 6, the fifth cutting tooth 7 and the sixth cutting tooth 8 are welded by a diamond compact in an upward 15-degree mode; 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 9 is formed in the drill body 10; the water holes 9 are symmetrically arranged and comprise three water holes; and three symmetrically distributed holes are adopted, so that the heat energy in the drilling process is greatly discharged, slag is discharged to the greatest extent, and the rock breaking and cutting effect is 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 three-wing arc angle nine-tooth diamond drill bit comprises a drill bit body (10); the method is characterized in that: a first blade (1) and two second blades (2) are arranged on the drill body (10); the first blade (1) is provided with a first cutting tooth (3), a second cutting tooth (4) and a third cutting tooth (5); the second cutting teeth (4) are welded with the first cutting teeth (3) in an overlapping mode; the third cutting tooth (5) is a central annular cutting tooth; a fourth cutting tooth (6), a fifth cutting tooth (7) and a sixth cutting tooth (8) are arranged on the second blade (2); the fifth cutting tooth (7) and the fourth cutting tooth (6) are welded in an overlapping mode; the sixth cutting tooth (8) and the fifth cutting tooth (7) are welded in an overlapping manner.

2. The tri-wing angular nine-tooth diamond drill bit according to claim 1, wherein: the included angle between the first blade (1) and the second blade (2) is 120 degrees; the included angle between the two first blades (1) is 120 degrees.

3. The tri-wing angular nine-tooth diamond drill bit according to claim 1, wherein: the second cutting tooth (4) and the first cutting tooth (3) are welded in an overlapping mode by 1 mm.

4. The tri-wing angular nine-tooth diamond drill bit according to claim 1, wherein: and the fifth cutting tooth (7) and the fourth cutting tooth (6) are welded in an overlapping mode by 2 mm.

5. The tri-wing angular nine-tooth diamond drill bit according to claim 1, wherein: and the sixth cutting tooth (8) and the fifth cutting tooth (7) are welded in an overlapping mode by 1 mm.

6. The tri-wing angular nine-tooth diamond drill bit according to claim 1, wherein: first cutting tooth (3), second cutting tooth (4), third cutting tooth (5), fourth cutting tooth (6), fifth cutting tooth (7) and sixth cutting tooth (8) all adopt the diamond compact piece to pitch up 15 welding.

7. The tri-wing angular nine-tooth diamond drill bit according to claim 1, wherein: the diameter of the diamond compact is 13 mm; the thickness of the diamond compact is 8 mm.

8. The tri-wing angular nine-tooth diamond drill bit according to claim 1, wherein: the drill body (10) is provided with a water hole (9).

9. The tri-wing angular nine-tooth diamond drill bit according to claim 8, wherein: the water holes (9) are symmetrically arranged and comprise three water holes.