CN113814447B

CN113814447B - Bury hole drill bit

Info

Publication number: CN113814447B
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: 2024-07-19
Anticipated expiration: 2040-06-19
Also published as: CN113814447A

Abstract

The invention relates to the technical field of drill bit buried hole drilling, and discloses a buried hole drill bit which comprises a center rod and a drill bit main body, wherein the center rod is coaxial with the drill bit main body and is clamped in the middle of the drill bit main body to play a role of 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 that of 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 penetrated into an original drilled hole, the buried hole drill bit rotates at a high speed during working, the center rod is prevented from deflecting at a drilling angle, the centrifugal weight generates centrifugal force to separate the drill bit main body from the center rod, the cutter performs reaming and drilling on the original hole diameter, and the cutter only performs reaming and drilling, so that the strength requirement on the cutter is not high. The invention has the advantages of simple structure, high working efficiency and low cost, and the drilled holes can be used for processing buried holes in drilled through holes or blind holes, thereby reducing the buried hole cost and ensuring that the drill bit has more abundant functions.

Description

Bury hole drill bit

Technical Field

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

Background

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

However, the existing buried hole processing technology is not universal, and a laser drilling machine, an electroplating hole processing device and other expensive machines are used for processing the buried holes, or a jointed board technology is adopted for creating the buried holes, so that the defects of high manufacturing cost, complex manufacturing technology and the like limit the popularization of the buried hole technology in the field of product manufacturing, and therefore, 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 bit to solve the problems of high buried hole manufacturing cost, complex manufacturing process and poor applicability in the current market proposed by the background technology.

In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a buries drill bit, includes center pole and drill bit main part, its characterized in that: the center rod is coaxial with the drill bit body and clamped in the middle of the drill bit body, a cutter is arranged at the end part of the drill bit body, the inner diameter of the cutter is identical with that of the drill bit body, a centrifugal weight is arranged behind the cutter, and the centrifugal weight and the drill bit body are integrally formed.

Preferably, the center rod is needle-shaped, and the center rod is made of 45# steel.

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

Preferably, the cutting angle of the cutter 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 semicircular shape, the centrifugal weight is spliced into a circular ring when the drill bit 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 perform hole burying operation on the insides of the existing blind holes and the 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 clung to the center rod is far away from the drill core, and the original drilling hole is subjected to expanding and cutting operation; the drilling part is smaller, and the required cutting force is relatively smaller, 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 holes can be used for machining buried holes in through holes or blind holes.

Drawings

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

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

Fig. 3 is a schematic front view of the center rod of the burial drill of the present invention.

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

Fig. 5 is a schematic front view of the main body of the burial bit according to the present invention.

Fig. 6 is an enlarged schematic view of a cutter of the bit body of the burial bit of the present invention shown in fig. 4.

In the figure: 1. a central rod; 2. a bit body; 3. a cutter; 4. the weights were centrifuged.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the 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 invention, as 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 made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, 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 drill bit comprises a center rod 1, a drill bit 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 with 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 center rod 1 is needle-shaped, and the center rod 1 is made of 45# steel. The drill bit body 2 is in a semicircular hollow shaft shape, the two drill bit bodies 2 are spliced into a cylinder shape, the inner diameter of the drill bit body 2 is matched with the diameter of the central rod 1, and the drill bit body 2 is made of 65Mn spring steel. The cutting angle of the cutters 3 is 45 degrees, each cutter 3 is arranged at the end part of each drill bit main body 2, the cutters 3 are connected to the drill bit main bodies 2 in a welding mode, the cutters 3 are arranged in a central symmetry mode when the drill bit main bodies 2 are spliced into a cylinder, the cutters 2 are made of 65Mn spring steel, the centrifugal weights 4 are in a semicircular shape, the centrifugal weights 4 are spliced into a circular ring when the drill bit main bodies 2 are spliced into a cylinder, and the centrifugal weights 4 are made of copper.

Working principle: when the buried hole drill bit is used, firstly, the buried hole drill bit needs to be simply understood, the buried hole drill bit needs to be clearly understood, only drilling movement is performed when working, feeding movement is not performed, the buried hole drill bit needs to be installed before use, the drill bit body 2 and the center rod 1 can be installed into an electric drill to be driven in a vertical axis arrangement, the buried hole drill bit stretches into a blind hole or a through hole which is processed by a plate, the electric drill is started to drive, the drill bit body 2 and the center rod 1 rotate at a high speed, the center rod 1 mainly plays a role of positioning and guiding, the drill bit body 2 drives a cutter 3 welded on the drill bit body 2 and a centrifugal weight 4 integrally formed with the cutter to rotate at a high speed when rotating at a high speed, the centrifugal force generated by the centrifugal weight 4 enables a cutting part of the drill bit body 2 which is originally clung to the center rod 1 to be away from a drill center, at the moment, the centrifugal force and the cutting force exerted by the drill bit body 2 and the force generated by the material per se in order to resist the centrifugal force remain balanced at the drill tip of the center rod 1, at the moment, the cutter 3 performs drilling movement inside the original blind hole or the through hole, and thus buried hole operation is realized.

The foregoing embodiments are merely examples of the present invention, and the scope of the present invention includes, but is not limited to, the forms and styles of the foregoing embodiments, and any suitable changes or modifications made by those skilled in the art, which are consistent with the claims of the present invention, shall fall within the scope of the present invention.

Claims

1. Buried drill bit, including center pole (1) and drill bit main part (2), its characterized in that: 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 matched with 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 center rod (1) is in a needle-shaped rod shape, and the center rod (1) is made of 45# steel; 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 the drill bit main body (2) is matched with the diameter of the center rod (1), and the drill bit main body (2) is made of 65Mn spring steel; the cutting angle of the cutter (3) is 45 degrees, only one cutter (3) is arranged at the end of each bit main body (2), the cutters (3) are arranged in a central symmetry mode when the bit main bodies (2) are spliced into a cylinder, the cutters (3) are made of 65Mn spring steel, the centrifugal weight (4) is in a semicircular shape, the centrifugal weight (4) is spliced into a circular ring when the bit main bodies (2) are spliced into a cylinder, the centrifugal weight (4) is made of copper, the cutters (3) welded on the bit main bodies are driven to rotate at a high speed with the centrifugal weight (4) integrally formed with the bit main bodies, the centrifugal force generated by the centrifugal weight (4) enables the cutting part of the bit main body (2) which is originally clung to the center rod (1) to be far away from the drill center, the centrifugal force and the cutting force applied to the bit main body (2) are balanced, and the cutter (3) is subjected to the force generated in order to resist the centrifugal force, so that the cutter is subjected to drilling motion in the drill tip of the center rod (1), and hole burying operation is realized in the inside a plate.