CN217872644U

CN217872644U - Coreless drill bit

Info

Publication number: CN217872644U
Application number: CN202221195245.0U
Authority: CN
Inventors: 江海; 周船; 杨维平; 朱孟杰; 陈道林; 任磊磊
Original assignee: HUAIBEI LINGUANG DRILLING ELECTROMECHANICAL ENGINEERING CO LTD
Current assignee: HUAIBEI LINGUANG DRILLING ELECTROMECHANICAL ENGINEERING CO LTD
Priority date: 2022-05-17
Filing date: 2022-05-17
Publication date: 2022-11-22
Anticipated expiration: 2032-05-17

Abstract

The utility model relates to a centreless drill bit technical field specifically is a centreless drill bit, including boring a section of thick bamboo, the inside of boring a section of thick bamboo is provided with interior crushing unit, interior crushing unit includes the benchmark pole, the inner wall at boring a section of thick bamboo is all fixed at the both ends of benchmark pole, the spout mouth of two mutual symmetries is seted up at the top of benchmark pole, the internally mounted of spout mouth has swing assembly, the last grinding subassembly of installing of swing assembly, the utility model discloses a when whole drill bit carries out high-speed rotatory rotation, the dead lever outwards removes because of centrifugal force to drive the grinding subassembly and outwards remove, the eccentric block slides along with the dead lever, and the dead lever collides with the one end of spout mouth, thereby makes the eccentric block take place irregular rotation, drives the dead lever and resets to central point puts and carries out sharp grinding to stone or soil layer, and the closed angle on the urceolus receives the friction, takes place to rotate, carries out the roll grinding to make the fragment can's unable blocking hollow position.

Description

Coreless drill bit

Technical Field

The utility model relates to a centreless drill bit technical field specifically is a centreless drill bit.

Background

At present, the drill bit adopts diamond compact piece to make more, and its cutting speed is fast, and the precision is high, can use for a long time, and to a great extent makes the size precision of production product obtain bigger promotion, the effectual quality that improves the product, along with the development of science and technology, diamond compact piece centreless drill bit has had the development of to a great extent, and its development has brought very big facility when carrying out the drilling cutting to the product for people, and its kind and quantity are also increasing day by day:

when a common coreless drill bit with a hollow structure is used for drilling stone or soil layers, fragments with different sizes can be generated, if the fragments are too large and move towards the center of the drill bit, the fragments can block the hollow position, and therefore the drill bit cannot be used normally.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a centreless drill to solve the problem that proposes in the above-mentioned background art.

The technical scheme of the utility model is that: the utility model provides a centreless drill bit, is including boring a section of thick bamboo, the crushing unit in boring the inside of a section of thick bamboo, interior crushing unit includes the benchmark pole, the inner wall of boring a section of thick bamboo is all fixed at the both ends of benchmark pole, the spout mouth of two mutual symmetries is seted up at the top of benchmark pole, the internally mounted of spout mouth has the swing subassembly, the last grinding subassembly of installing of swing subassembly, the top edge of boring a section of thick bamboo is fixed with a plurality of brill swoves.

Preferably, the swing assembly comprises a fixing rod and a supporting cylinder, the two ends of the fixing rod are fixed on the inner wall of the supporting cylinder, the fixing rod is slidably mounted on the inner wall of the sliding groove opening, two limiting ring plates are rotatably mounted on the outer wall of the circumference of the fixing rod and are respectively located on the upper portion and the lower portion of the reference rod, and the limiting ring plates are all in contact with the reference rod.

Preferably, the fixed rod is rotatably provided with an eccentric block on the circumferential outer wall.

Preferably, the grinding assembly comprises an outer drum rotatably mounted on the outer wall of the support drum and a plurality of cusps provided on the circumferential outer wall of the outer drum.

Preferably, one end of each of the two support cylinders, which is far away from each other, is slidably inserted into a fixed cylinder, and one end of the fixed cylinder is fixed to the inner wall of the drill cylinder.

Preferably, the top and the bottom of the reference rod are both fixed with support rods, the support rods are positioned between two support cylinders, two ends, far away from each other, of the support rods are fixed with a middle cylinder, and the middle cylinder is slidably mounted on the inner wall of the support cylinder.

The utility model discloses an improve and provide a centreless drill bit here, compare with prior art, have following improvement and advantage:

the utility model discloses a when whole drill bit carries out high-speed rotatory rotation, the dead lever outwards removes because centrifugal force to drive the grinding subassembly and outwards remove, the eccentric block slides along with the dead lever, the dead lever collides with the one end of spout mouth, thereby makes the eccentric block take place irregular rotation, drives the dead lever and resets, thereby central point puts and carries out sharp grinding to stone or soil layer, the closed angle on the urceolus receives the friction, takes place to rotate, rolls the grinding, thereby make the fragment can't block up the hollow position.

Drawings

The invention is further explained below with reference to the drawings and examples:

fig. 1 is a schematic perspective view of the present invention;

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

fig. 3 is a schematic perspective view of the inner crushing assembly of the present invention;

fig. 4 is a schematic diagram of the internal structure of the inner crushing assembly of the present invention.

Description of the reference numerals:

1. drilling a barrel; 2. drilling a cutter; 3. an inner crushing assembly; 31. a fixed cylinder; 32. a reference bar; 33. an outer cylinder; 34. an intermediate barrel; 35. a support cylinder; 36. fixing the rod; 37. an eccentric block; 38. a support bar; 39. a limit ring plate.

Detailed Description

The present invention will be described in detail below, and it is apparent that the technical solutions in the embodiments of the present invention are described clearly and completely. 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.

The utility model discloses an improve and provide a centreless drill bit here, the technical scheme of the utility model is:

as shown in fig. 1-4, a coreless drill bit includes a drill barrel 1, an inner crushing assembly 3 is disposed inside the drill barrel 1, the inner crushing assembly 3 includes a reference rod 32, both ends of the reference rod 32 are fixed on the inner wall of the drill barrel 1, two symmetrical sliding notches are formed in the top of the reference rod 32, a swing assembly is mounted inside the sliding notches, a grinding assembly is mounted on the swing assembly, a plurality of drill bits 2 are fixed on the top edge of the drill barrel 1, and the swing assembly can move the grinding assembly along the reference rod 32.

Preferably, the swing assembly comprises a fixing rod 36 and a supporting cylinder 35, two ends of the fixing rod 36 are fixed on the inner wall of the supporting cylinder 35, the fixing rod 36 is slidably mounted on the inner wall of the chute opening, two limiting ring plates 39 are rotatably mounted on the outer wall of the circumference of the fixing rod 36, the two limiting ring plates 39 are respectively located on the upper portion and the lower portion of the reference rod 32, the limiting ring plates 39 are in contact with the reference rod 32, an eccentric block 37 is rotatably mounted on the outer wall of the circumference of the fixing rod 36, when the whole drill bit rotates at a high speed, the fixing rod 36 moves outwards due to centrifugal force, so that the grinding assembly is driven to move outwards, the eccentric block 37 slides along with the fixing rod 36, the fixing rod 36 collides with one end of the chute opening, the eccentric block 37 rotates irregularly, the fixing rod 36 is driven to reset, and the central position performs linear grinding on stone or soil layers.

Preferably, the grinding assembly comprises an outer cylinder 33 and a plurality of sharp corners arranged on the circumferential outer wall of the outer cylinder 33, the outer cylinder 33 is rotatably mounted on the outer wall of the support cylinder 35, and the sharp corners on the outer cylinder 33 are subjected to friction to rotate so as to perform rolling grinding.

Preferably, the end, away from each other, of each of the two support cylinders 35 is slidably inserted into the corresponding fixed cylinder 31, one end of each of the fixed cylinders 31 is fixed to the inner wall of the drill cylinder 1, the top and bottom of the reference rod 32 are both fixed to support rods 38, the support rods 38 are located between the two support cylinders 35, the end, away from each other, of each of the two support rods 38 is fixed to the corresponding intermediate cylinder 34, the intermediate cylinders 34 are slidably mounted on the inner wall of the support cylinders 35, and the fixed cylinders 31 and the support cylinders 35 are arranged to prevent fragments from entering the inner crushing assembly 3.

In conclusion: carry out high-speed rotatory rotation when whole drill bit, dead lever 36 outwards removes because centrifugal force to drive the grinding subassembly and outwards remove, eccentric block 37 slides along with dead lever 36, dead lever 36 and spout mouth's one end collision, thereby make eccentric block 37 take place irregular rotation, drive dead lever 36 and reset, thereby central point puts and carries out the straight line grinding to stone or soil layer, the closed angle on the urceolus 33 receives the friction, takes place to rotate, roll the grinding, thereby make the fragment can't block up the hollow position.

Claims

1. A coreless drill bit, comprising: including boring a section of thick bamboo (1), the inside of boring a section of thick bamboo (1) is provided with interior crushing unit (3), interior crushing unit (3) are including benchmark pole (32), the inner wall of boring a section of thick bamboo (1) is all fixed at the both ends of benchmark pole (32), the spout mouth of two mutual symmetries is seted up at the top of benchmark pole (32), the internally mounted of spout mouth has the swing subassembly, the last grinding subassembly of installing of swing subassembly, the top edge of boring a section of thick bamboo (1) is fixed with a plurality of brill sword (2).

2. The coreless drill of claim 1, wherein: the swing assembly comprises a fixing rod (36) and a supporting cylinder (35), the two ends of the fixing rod (36) are fixed on the inner wall of the supporting cylinder (35), the fixing rod (36) is slidably mounted on the inner wall of the sliding groove opening, two limiting ring plates (39) are rotatably mounted on the outer wall of the circumference of the fixing rod (36), the two limiting ring plates (39) are respectively located on the upper portion and the lower portion of the reference rod (32), and the limiting ring plates (39) are all in contact with the reference rod (32).

3. A coreless drill as recited in claim 2, wherein: the outer wall of the circumference of the fixed rod (36) is rotatably provided with an eccentric block (37).

4. A coreless drill as recited in claim 2, wherein: the grinding assembly comprises an outer cylinder (33) and a plurality of sharp corners arranged on the circumferential outer wall of the outer cylinder (33), wherein the outer cylinder (33) is rotatably arranged on the outer wall of a support cylinder (35).

5. A coreless drill as recited in claim 2, wherein: one end, far away from each other, of each of the two support cylinders (35) is inserted with a fixed cylinder (31) in a sliding mode, and one end of each fixed cylinder (31) is fixed to the inner wall of the drill cylinder (1).

6. The coreless drill of claim 2, wherein: the top and the bottom of the reference rod (32) are both fixed with supporting rods (38), the supporting rods (38) are located between two supporting cylinders (35), two ends, far away from each other, of the supporting rods (38) are fixed with middle cylinders (34), and the middle cylinders (34) are slidably mounted on the inner wall of the supporting cylinders (35).