CN113814447A

CN113814447A - Buried hole drill bit

Info

Publication number: CN113814447A
Application number: CN202010568703.XA
Authority: CN
Inventors: 张哲宇; 孟春; 杨丽莹
Original assignee: Northeast Forestry University
Current assignee: Northeast Forestry University
Priority date: 2020-06-19
Filing date: 2020-06-19
Publication date: 2021-12-21

Abstract

The invention relates to the technical field of drilling and boring of a drill bit, and discloses a buried hole drill bit which comprises a central rod and a drill bit main body, wherein the central rod and the drill bit main body are coaxial and clamped in the middle of the drill bit main body to play a role in positioning and guiding, a cutter is arranged at the end part of the drill bit main body, the inner diameter of the cutter is matched with the drill bit main body, a centrifugal weight is arranged behind the cutter, the centrifugal weight and the drill bit main body are integrally formed, the buried hole drill bit is deeply inserted into an original drilled hole, the buried hole drill bit rotates at a high speed during working, the central rod prevents the drilled hole from deviating in angle, the centrifugal weight generates centrifugal force to separate the drill bit main body from the central rod, the cutter performs reaming and boring on the original hole diameter, and the cutter only performs reaming and boring, and the requirement on the strength of the cutter is not high. The invention has simple structure, high working efficiency and low cost, and the drilled hole can be used for processing buried holes in drilled through holes or blind holes, thereby having the advantages of reducing the cost of buried holes and enriching the functions of the drill bit.

Description

Buried hole drill bit

Technical Field

The invention relates to the technical field of drill bit buried hole drilling, in particular to a buried hole drill bit.

Background

At present, plate products made of various materials are products with large demands on the market, various holes are very necessary to be processed on plates, holes which can be directly and conveniently processed by a drill bit mainly comprise through holes, blind holes and the like, the holes can meet the production and processing requirements of most products, the hole embedding technology is mainly used for drilling coaxial holes or holes with larger inner diameters in the processed through holes or blind holes on the plates, and the hole embedding technology is also applied to plate installation and connection.

However, the current buried hole processing technology is not universal, and the defects of high manufacturing cost, complex manufacturing technology and the like of the common laser drilling machine, the common electroplating hole equipment and the like which are used for processing buried holes by machines with high manufacturing cost or the buried holes created by the plate splicing technology limit the popularization of the buried hole technology in the product manufacturing field, so that a simple and efficient buried hole drilling technology is urgently needed in the market to solve the problems.

Disclosure of Invention

The invention aims to provide a buried hole drill to solve the problems of high manufacturing cost, complex manufacturing process and poor applicability of buried holes in the current market in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: buried drill bit, including well core rod and drill bit main part, its characterized in that: the center rod and the drill bit main body are coaxial and clamped in the middle of the drill bit main body, a cutter is arranged at the end of the drill bit main body, the inner diameter of the cutter is matched with the drill bit body, a centrifugal weight is arranged behind the cutter, and the centrifugal weight and the drill bit main body are integrally formed.

Preferably, the central rod is in a needle bar shape, and the material of the central rod is 45# steel.

Preferably, the drill main body is in a semi-circular hollow shaft shape, the two drill main bodies are spliced into a cylinder shape, the inner diameter of each drill main body is matched with the diameter of the central rod, and the drill main bodies are made of 65Mn spring steel.

Preferably, the cutting angle of the cutters is 45 degrees, only one cutter is arranged at the end part of each drill bit main body, the cutters are arranged in a central symmetry mode when the drill bit main bodies are spliced into a cylinder, and the cutters are made of 65Mn spring steel.

Preferably, the centrifugal weight is in a semi-circular ring shape, the centrifugal weight is spliced into a circular ring when the drill bit main body is spliced into a cylinder, and the centrifugal weight is made of copper.

Compared with the prior art, the invention has the advantages that: the drill bit can carry out hole burying operation on the inner parts of the existing blind holes and through holes during operation by simply changing the form of the drill bit; under the action of centrifugal force, the cutting part of the drill bit body which is originally tightly attached to the central rod is far away from the drill core, and the original drilling hole is subjected to reaming operation; the drilling part is small, and the required cutting force is relatively small, so that the requirement on the material strength of the drill bit tool is not high; meanwhile, the structure is simple, the working efficiency is high, the cost is low, and the drilled hole can be used for processing a buried hole in a through hole or a blind hole.

Drawings

Fig. 1 is a schematic perspective view of a normal state of the buried drill according to the present invention.

Fig. 2 is a schematic perspective view of the working state of the buried drill bit of the present invention.

Fig. 3 is a front view schematic of a central rod of the present invention counter-sunk bit.

Fig. 4 is a schematic side view of a bit body of the present invention.

Fig. 5 is a front view of a drill body of the present invention.

Fig. 6 is an enlarged schematic view of a cutter of the bit body of the countersink drill of fig. 4 according to the present invention.

In the figure: 1. a center pole; 2. a drill bit body; 3. a cutter; 4. and (5) centrifuging the heavy object.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: the buried hole drill comprises a central rod 1, a drill main body 2, a cutter 3 and a centrifugal weight 4.

The center rod 1 and the drill bit main body 2 are coaxial and clamped in the middle of the drill bit main body 2, a cutter 3 is arranged at the end part of the drill bit main body 2, the inner diameter of the cutter 3 is identical to that of the drill bit main body 2, a centrifugal weight 4 is arranged behind the cutter 3, and the centrifugal weight 4 and the drill bit main body 2 are integrally formed.

The central rod 1 is in a needle-shaped rod shape, and the central rod 1 is made of 45# steel. The drill bit main body 2 is a semicircular hollow shaft, the two drill bit main bodies 2 are spliced into a cylinder shape, the inner diameter of the drill bit main body 2 is identical to the diameter of the central rod 1, and the drill bit main body 2 is made of 65Mn spring steel. The cutting angle of cutter 3 is 45, and 2 tip of every drill bit main part only have a cutter 3, and cutter 3 connects on drill bit main part 2 through welding mode, and cutter 3 is central symmetrical arrangement when drill bit main part 2 pieces into the drum, and cutter 2 material is 65Mn spring steel, centrifugal weight 4 is half-circular ring form, and centrifugal weight 4 pieces into a ring when drill bit main part 2 pieces into the drum, and the material of centrifugal weight 4 is copper.

The working principle is as follows: when the buried hole drill bit is used, firstly, the buried hole drill bit needs to be simply known, the buried hole drill bit needs to be clearly known, only drilling movement is carried out when the buried hole drill bit works, and feeding movement is not carried out, the buried hole drill bit needs to be installed before the buried hole drill bit is used, the drill bit main body 2 and the central rod 1 can be arranged in an electric drill in a vertical axis mode to be driven, the buried hole drill bit extends into a blind hole or a through hole which is processed on a plate, the electric drill is started to drive, the drill bit main body 2 and the central rod 1 rotate at a high speed, the central rod 1 mainly plays a role in positioning and guiding, when the drill bit main body 2 rotates at a high speed, the cutter 3 welded on the drill bit main body and a centrifugal weight 4 integrally formed with the cutter are driven to rotate at a high speed, the centrifugal force generated by the centrifugal weight 4 enables a cutting part of the drill bit main body 2 which is originally tightly attached to the central rod 1 to be far away from a drill core, and the centrifugal force and the cutting force borne by the drill bit main body 2 at the moment, and the force given by the material itself to resist the centrifugal force keeps balance at the drill tip of the central rod 1, at this time, the cutter 3 performs drilling movement, and performs reaming inside the original blind hole or through hole of the plate, thereby realizing the hole burying operation, and the content which is not described in detail in the description belongs to the prior art known by the professional in the field.

The above embodiments are only specific examples of the present invention, and the protection scope of the present invention includes but is not limited to the product forms and styles of the above embodiments, and any suitable changes or modifications made by those skilled in the art according to the claims of the present invention shall fall within the protection scope of the present invention.

Claims

1. Buried drill bit, including well core rod (1) and drill bit main part (2), its characterized in that: well core rod (1) and drill bit main part (2) are coaxial and press from both sides in the middle of drill bit main part (2), drill bit main part (2) tip is equipped with one cutter (3), cutter (3) internal diameter is identical with drill bit body (2), cutter (3) rear is equipped with centrifugal heavy object (4), centrifugal heavy object (4) and drill bit main part (2) integrated into one piece.

2. The countersink drill bit according to claim 1, wherein: the central rod (1) is in a needle-shaped rod shape, and the central rod (1) is made of 45# steel.

3. The countersink drill bit according to claim 1, wherein: the drill bit main body (2) is in a semicircular hollow shaft shape, the two drill bit main bodies (2) are spliced into a cylinder shape, the inner diameter of each drill bit main body (2) is identical to the diameter of the corresponding center rod (1), and the drill bit main bodies (2) are made of 65Mn spring steel.

4. The countersink drill bit according to claim 1, wherein: the cutting angle of the cutters (3) is 45 degrees, only one cutter (3) is arranged at the end part of each drill bit main body (2), the cutters (3) are arranged in a central symmetry mode when the drill bit main bodies (2) are spliced into a cylinder, and the cutters (2) are made of 65Mn spring steel.

5. The countersink drill bit according to claim 1, wherein: the centrifugal weight (4) is in a semi-circular ring shape, the centrifugal weight (4) is spliced into a circular ring when the drill bit main body (2) is spliced into a cylinder, and the centrifugal weight (4) is made of copper.