CN213360008U

CN213360008U - Impact-resistant PDC drill bit

Info

Publication number: CN213360008U
Application number: CN202021265943.4U
Authority: CN
Inventors: 何盼
Original assignee: Individual
Current assignee: Ning Zixiao
Priority date: 2020-07-02
Filing date: 2020-07-02
Publication date: 2021-06-04
Anticipated expiration: 2030-07-02

Abstract

The utility model discloses a PDC drill bit shocks resistance, including the drill bit cylinder, the outer wing of top fixedly connected with of drill bit cylinder, the outer wing keeps away from the outer cutting teeth of one side fixedly connected with of drill bit cylinder, the wing in the middle part fixedly connected with at drill bit cylinder top, the cutting teeth in the top fixedly connected with of interior wing, the bottom fixedly connected with connecting piece of drill bit cylinder, the bottom fixedly connected with installed part of connecting piece is the shape of buckling through setting up outer wing, can increase the area of contact of outer wing between the drill bit cylinder, and through setting up interior wing, can reduce the resistance that outer wing cutting received, through setting up the installed part, can easy to assemble and dismantle this drill bit. The utility model discloses a cooperation that sets up drill bit cylinder, outer cutting teeth, outer wing, interior cutting teeth, interior wing, connecting piece and installed part is used, and it is good to possess impact resistance, is difficult to make the cutting teeth collapse disconnected advantage.

Description

Impact-resistant PDC drill bit

Technical Field

The utility model relates to a PDC drill bit technical field specifically is a PDC drill bit shocks resistance.

Background

The polycrystalline diamond compact bit is a compact, the appearance of which is round and is embedded and welded on a cylindrical cutting tool, the cutting tool is embedded and installed on a bit body to form the PDC bit, the PDC bit is rapidly developed after being successfully manufactured and used in the early 70 th of the 20 th century, the PDC bit can be used at lower drilling pressure and higher rotating speed, the bit footage is high, and the unit footage cost is low.

The PDC drill bit is far lower than natural diamond drill bit with low costs, and along with the continuous progress of material technique, the stratum that the PDC drill bit adapts to is also more and more, and the rock stratum of ten grades of hardness can be applied to novel compound piece, and the most a set of and diameter of cutting teeth of current PDC drill bit are great, and when boring harder stratum, the cutting teeth is close to the great cutting teeth that makes of moment of torsion of central point position and is broken easily like this.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a PDC drill bit shocks resistance possesses that shock resistance is good, is difficult to make the cutting teeth break up disconnected advantage, has solved current PDC drill bit when boring harder stratum, and the cutting teeth is close to the great problem that makes the cutting teeth break up disconnected easily of moment of torsion that central point put.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a PDC drill bit shocks resistance, includes the drill bit cylinder, the outer wing of top fixedly connected with of drill bit cylinder, the outer cutting teeth of one side fixedly connected with of drill bit cylinder is kept away from to outer wing, the wing in the middle part fixedly connected with at drill bit cylinder top, the cutting teeth in the top fixedly connected with of interior wing, the bottom fixedly connected with connecting piece of drill bit cylinder, the bottom fixedly connected with installed part of connecting piece.

Preferably, the number of outer wing is four, and even distribution in the edge at drill bit cylinder top, outer cutting teeth and interior cutting teeth are polycrystalline diamond compact cutting teeth.

Preferably, the number of the inner blades is four, the inner blades are uniformly distributed in the middle of the top of the drill bit cylinder, and the inner blades are higher than the outer blades.

Preferably, the outer blade is bent, and the number of the outer cutting teeth and the number of the inner cutting teeth are both a plurality.

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

1. the utility model discloses a cooperation that sets up drill bit cylinder, outer cutting teeth, outer wing of a knife, interior cutting teeth, interior wing of a knife, connecting piece and installed part is used, and it is good to possess impact resistance, is difficult to make the advantage that the cutting teeth collapses absolutely, is worth promoting.

2. The utility model can increase the contact area between the outer blade and the drill bit cylinder by arranging the outer blade to be bent;

by arranging the inner blade, the resistance to the cutting of the outer blade can be reduced;

through setting up the installed part, can easy to assemble and dismantle this drill bit.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a right side view of the structure of the present invention;

fig. 3 is a rear view of the structure of the present invention.

In the figure: 1 drill bit cylinder, 2 external cutting teeth, 3 external blades, 4 internal cutting teeth, 5 internal blades, 6 connecting pieces and 7 mounting pieces.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to be referred must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "connected", and the like are to be construed broadly, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model provides a parts such as drill bit cylinder 1, outer cutting teeth 2, outer wing of a knife 3, interior cutting teeth 4, interior wing of a knife 5, connecting piece 6 and installed part 7 are the parts that general standard or technical staff in the field know, and its structure and principle all can learn through the technical manual or learn through conventional experimental method for technical staff in the field.

Referring to fig. 1-3, an impact-resistant PDC drill bit includes a drill bit cylinder 1, an outer blade 3 fixedly connected to the top of the drill bit cylinder 1, an outer cutter 2 fixedly connected to one side of the outer blade 3 away from the drill bit cylinder 1, an inner blade 5 fixedly connected to the middle of the top of the drill bit cylinder 1, an inner cutter 4 fixedly connected to the top of the inner blade 5, a connecting member 6 fixedly connected to the bottom of the drill bit cylinder 1, and a mounting member 7 fixedly connected to the bottom of the connecting member 6;

the number of the outer blades 3 is four, the outer blades are uniformly distributed on the edge of the top of the drill bit column body 1, and the outer cutting teeth 2 and the inner cutting teeth 4 are polycrystalline diamond compact cutting teeth;

the number of the inner blades 5 is four, the inner blades are uniformly distributed in the middle of the top of the drill bit column body 1, and the inner blades 5 are higher than the outer blades 3;

the outer blade wings 3 are bent, and the number of the outer cutting teeth 2 and the number of the inner cutting teeth 4 are a plurality;

the outer blade 3 is bent, so that the contact area between the outer blade 3 and the drill bit column body 1 can be increased;

the resistance to cutting of the outer blade 3 can be reduced by arranging the inner blade 5;

through setting up installed part 7, can easy to assemble and dismantle this drill bit.

When the drilling and excavating device is used, the inner blades 5 are higher than the outer blades 3 when drilling and excavating, the inner blades 5 are firstly in contact with the stratum to drill, the diameter ratio of the four inner blades 5 is smaller and the four inner blades 5 are closer to each other, so that teeth are not prone to breaking, then the outer blades 3 drill behind the inner blades 5, drilling is conducted through the two groups of cutting teeth, so that the resistance of the outer blades 3 is smaller, teeth are not prone to breaking, and the shock resistance is improved.

In summary, the following steps: this PDC drill bit shocks resistance uses through the cooperation of drill bit cylinder 1, outer cutting teeth 2, outer wing of a knife 3, interior cutting teeth 4, interior wing of a knife 5, connecting piece 6 and installed part 7, has solved current PDC drill bit when boring hard stratum, and the cutting teeth is close to the great problem that makes the cutting teeth break apart easily of moment of torsion of central point position.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An impact resistant PDC drill bit, comprising a drill bit cylinder (1), characterized in that: the outer wing of a knife (3) of top fixedly connected with of drill bit cylinder (1), outer cutting teeth (2) of one side fixedly connected with of drill bit cylinder (1) are kept away from to outer wing of a knife (3), wing of a knife (5) in the middle part fixedly connected with at drill bit cylinder (1) top, cutting teeth (4) in the top fixedly connected with of interior wing of a knife (5), bottom fixedly connected with connecting piece (6) of drill bit cylinder (1), the bottom fixedly connected with installed part (7) of connecting piece (6).

2. An impact resistant PDC bit according to claim 1, wherein: the number of outer wing (3) is four, and even distribution in the edge at drill bit cylinder (1) top, outer cutting teeth (2) and interior cutting teeth (4) are polycrystalline diamond compact cutting teeth.

3. An impact resistant PDC bit according to claim 1, wherein: the number of the inner blades (5) is four, the inner blades are uniformly distributed in the middle of the top of the drill bit cylinder (1), and the inner blades (5) are higher than the outer blades (3).

4. An impact resistant PDC bit according to claim 1, wherein: the outer blade (3) is bent, and the number of the outer cutting teeth (2) and the number of the inner cutting teeth (4) are both a plurality.