CN213898859U - Three-wing concave drill bit - Google Patents

Abstract

The utility model discloses a three wings indent drill bits, including the drill bit body, the bottom fixedly connected with dead lever of drill bit body, the spliced eye has been seted up on the surface of dead lever, the connecting hole has been seted up to the bottom of dead lever, the through-hole has been seted up at the top of drill bit body, the top of drill bit body is provided with the drill bit wing, the top of drill bit wing is provided with first arch and second arch, first bellied one side is provided with first brill sword, the bellied one side of second is provided with the second brill sword, the side of drill bit wing is provided with the circular knife, the side of drill bit wing is provided with the semicircle sword. Through the drill wing that sets up the type of falling L, the connection area between multiplicable drill wing and the drill body increases the stability that the drill wing is connected, when polishing, distributes the impact force to the top surface and the side of drill body through the drill wing, reduces the unit area's of drill wing and drill body the stress intensity, prolongs the life of drill bit.

Description

Three-wing concave drill bit

Technical Field

The utility model relates to a drill bit technical field especially relates to a three-wing indent drill bit.

Background

The inner concave drill bit is one of the important tools for petroleum drilling, whether the drill bit is suitable for the properties of rocks and the quality of the rocks, plays an important role in selecting and using a drilling process, and particularly has great influence on the drilling quality, the drilling speed and the drilling cost.

However, the wings of the conventional recessed drill bit are often fixed to the end of the drill bit, and the area of the connecting band between the wings of the drill bit and the drill bit is too small due to the connecting mode, so that the wings of the drill bit are easy to fall off, and the service life of the drill bit is not prolonged.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of prior art, the utility model provides a three wings indent drill bits, through setting up the drill bit wing of the type of falling L, thereby the stability that the connection area between multiplicable drill bit wing and the drill bit body increases the drill bit wing and connects, when polishing, the accessible drill bit wing distributes the impact force to the top surface and the side of drill bit body to reduce the stress strength of the unit area of drill bit wing and drill bit body, furtherly, the life of extension drill bit.

In order to solve the technical problem, the utility model provides a following technical scheme: the utility model provides a three wing indent drill bits, includes the drill bit body, the bottom fixedly connected with dead lever of drill bit body, the spliced eye has been seted up on the surface of dead lever, the connecting hole has been seted up to the bottom of dead lever, the through-hole has been seted up at the top of drill bit body, the top of drill bit body is provided with the drill bit wing, the top of drill bit wing is provided with first arch and second arch, first bellied one side is provided with first brill sword, the bellied one side of second is provided with the second brill sword, the side of drill bit wing is provided with the circular knife, the side of drill bit wing is provided with half circular knife.

As an optimal technical scheme of the utility model, the spliced eye sets up about the central line symmetry of dead lever, the spliced eye runs through in the inside of dead lever.

As an optimal technical scheme of the utility model, connecting hole and dead lever set up with the axle center, the inner wall of connecting hole is provided with triangle connecting thread.

As an optimal technical scheme of the utility model, the through-hole is the circumference array about the central line of drill bit body and arranges, the through-hole is provided with threely, and two is adjacent the line angle of through-hole and drill bit body top surface central point is one hundred twenty degrees.

As an optimal technical scheme of the utility model, the drill bit wing is the type of falling L, the height of drill bit wing and the height of drill bit body equal, the drill bit wing is provided with threely, and adjacent spacing distance between the drill bit wing is equal.

As an optimal technical scheme of the utility model, the second is protruding to be set up about first protruding symmetry, first protruding and the bellied top surface of second are the arc surface.

As an optimal technical scheme of the utility model, first brill sword and second brill sword are circular sword, circle sword and semicircle sword are located same one side of drill bit wing.

Compared with the prior art, the utility model discloses the beneficial effect that can reach is:

the utility model discloses a setting is the three drill bit wing that the circumference array was arranged, first drill bit through each drill bit wing surface, the second drill bit, circular knife and semicircle sword, carry out the drilling of different angles, through setting up the drill bit wing of the type of falling L, thereby the connection area between multiplicable drill bit wing and the drill bit body increases the stability that the drill bit wing is connected, when polishing, the accessible drill bit wing distributes the impact force to the top surface and the side of drill bit body, thereby reduce the stress intensity of the unit area of drill bit wing and drill bit body, furtherly, the life of extension drill bit.

Drawings

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

fig. 2 is a top view of the present invention;

FIG. 3 is a bottom view structural diagram of the present invention;

fig. 4 is a front view of the present invention.

Wherein: 1. a drill bit body; 2. fixing the rod; 3. inserting holes; 4. connecting holes; 5. a through hole; 6. a drill wing; 7. a first protrusion; 8. a second protrusion; 9. a first drill bit; 10. a second drill; 11. a circular knife; 12. a semicircular knife.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the invention easy to understand, the invention is further explained below with reference to the specific embodiments, but the following embodiments are only the preferred embodiments of the invention, not all. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents and the like used in the following examples are commercially available unless otherwise specified.

Example (b):

as shown in fig. 1-4, a three-wing indent drill bit, including drill bit body 1, the bottom fixedly connected with dead lever 2 of drill bit body 1, spliced eye 3 has been seted up on the surface of dead lever 2, connecting hole 4 has been seted up to the bottom of dead lever 2, through-hole 5 has been seted up at the top of drill bit body 1, the top of drill bit body 1 is provided with drill bit wing 6, the top of drill bit wing 6 is provided with first arch 7 and second arch 8, one side of first arch 7 is provided with first boring cutter 9, one side of second arch 8 is provided with second boring cutter 10, the side of drill bit wing 6 is provided with circular cutter 11, the side of drill bit wing 6 is provided with semicircle sword 12.

In other embodiments, spliced eye 3 sets up about the central line symmetry of dead lever 2, spliced eye 3 runs through in the inside of dead lever 2, run through in the inside spliced eye 3 of dead lever 2 through the setting, the bolt pole of 3 cooperation adaptations of accessible spliced eye is consolidated being connected between dead lever 2 and the outside transmission part, promote connection stability and the reliability that the drill bit used, and simultaneously, the screw thread of 4 inner walls of connecting hole can be dismantled dead lever 2 and be connected, has made things convenient for the holistic installation of drill bit, change and dismantlement.

In other embodiments, the connecting hole 4 and the fixing rod 2 are coaxially arranged, the inner wall of the connecting hole 4 is provided with a triangular connecting thread, and the drill bit can be positioned and installed through the triangular connecting thread by arranging the connecting hole 4, so that the drill bit can be conveniently detached and maintained.

In other embodiments, the through holes 5 are arranged in a circumferential array about the center line of the drill body 1, the number of the through holes 5 is three, the connecting line angle between two adjacent through holes 5 and the center point of the top surface of the drill body 1 is one hundred twenty degrees, and by arranging the plurality of through holes 5, the cooling airflow of the external environment can be guided through the through holes 5, so that the airflow cooling of the drill body 1 is facilitated.

In other embodiments, the drill wing 6 is the type of falling L, the height of drill wing 6 and the height of drill body 1 equal, drill wing 6 is provided with threely, and the interval distance between the adjacent drill wing 6 equals, through setting up the drill wing 6 that three equidistant arranged, through setting up the drill wing 6 of the type of falling L, increase the connection area between drill wing 6 and the drill body 1, thereby promote the connection stability between drill wing 6 during operation and the drill body 1, the drill wing 6 after extending simultaneously, can carry out fixed connection with circular knife 11 and semicircular knife 12 in the side, thereby increase the cutting strength of drill bit.

In other embodiments, the second protrusion 8 is symmetrically arranged with respect to the first protrusion 7, and the top surfaces of the first protrusion 7 and the second protrusion 8 are both arc surfaces.

In other embodiments, the first drill 9 and the second drill 10 are both circular cutters, the circular cutter 11 and the semicircular cutter 12 are located on the same side of the drill wing 6, and by arranging the first drill 9 and the second drill 10, and the circular cutter 11 and the semicircular cutter 12, drilling and cutting can be performed at multiple angles, so that the drilling capability of the drill is improved.

The utility model discloses a theory of operation: when in use, the fixing rod 2 and the drill bit body 1 can be quickly connected and fixed by arranging the connecting hole 4 and the external fixing part through threaded connection, and the bolt rod matched with the inserting hole 3 can be arranged through the inserting hole 3, the fixing rod 2 and the external connecting part are fixedly locked, the fixing stability of the drill bit is improved, and by arranging the inverted L-shaped drill bit wing 6, the connection area between the wing bit 6 and the bit body 1 can be increased to increase the stability of the connection of the wing bit 6, while grinding, the impact force can be distributed to the top surface and the side surface of the drill bit body 1 through the drill bit wings 6, thereby reducing the stress strength of the drill wing 6 and the drill body 1 in unit area, further prolonging the service life of the drill, meanwhile, the installation space of the circular cutter 11 and the semicircular cutter 12 is increased, and the cutting angle and the strength of the drill bit in the drilling process are increased.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (7)

1. The utility model provides a three wings indent drill bits, includes drill bit body (1), the bottom fixedly connected with dead lever (2) of drill bit body (1), its characterized in that: the drill bit is characterized in that a splicing hole (3) is formed in the surface of the fixing rod (2), a connecting hole (4) is formed in the bottom of the fixing rod (2), a through hole (5) is formed in the top of the drill bit body (1), a drill bit wing (6) is arranged at the top of the drill bit body (1), a first protrusion (7) and a second protrusion (8) are arranged at the top of the drill bit wing (6), a first drill cutter (9) is arranged on one side of the first protrusion (7), a second drill cutter (10) is arranged on one side of the second protrusion (8), a circular cutter (11) is arranged on the side face of the drill bit wing (6), and a semicircular cutter (12) is arranged on the side face of the drill bit wing (6).

2. A three wing cove drill according to claim 1 wherein: the plug-in holes (3) are symmetrically arranged relative to the center line of the fixed rod (2), and the plug-in holes (3) penetrate through the inside of the fixed rod (2).

3. A three wing cove drill according to claim 1 wherein: the connecting hole (4) and the fixing rod (2) are coaxially arranged, and the inner wall of the connecting hole (4) is provided with a triangular connecting thread.

4. A three wing cove drill according to claim 1 wherein: the drill bit is characterized in that the through holes (5) are arranged in a circumferential array mode about the center line of the drill bit body (1), the number of the through holes (5) is three, and the connecting line angle between the two adjacent through holes (5) and the center point of the top surface of the drill bit body (1) is one hundred twenty degrees.

5. A three wing cove drill according to claim 1 wherein: the drill bit wing (6) is of an inverted L shape, the height of the drill bit wing (6) is equal to that of the drill bit body (1), the number of the drill bit wings (6) is three, and the spacing distances between the drill bit wings (6) are equal.

6. A three wing cove drill according to claim 1 wherein: the second bulges (8) are symmetrically arranged relative to the first bulges (7), and the top surfaces of the first bulges (7) and the second bulges (8) are both arc surfaces.

7. A three wing cove drill according to claim 1 wherein: the first drilling tool (9) and the second drilling tool (10) are both circular tools, and the circular tool (11) and the semicircular tool (12) are located on the same side of the drill wing (6).

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