CN215880017U

CN215880017U - Superhard micro drill bit welded with polycrystalline diamond

Info

Publication number: CN215880017U
Application number: CN202121308075.8U
Authority: CN
Inventors: 周培峰
Original assignee: Jiangmen Jiantao Hi Tech Co ltd
Current assignee: Jiangmen Jiantao Hi Tech Co ltd
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2022-02-22
Anticipated expiration: 2031-06-11

Abstract

The utility model discloses a superhard micro drill welded with polycrystalline diamond, belonging to the technical field of drill bits for processing circuit boards, comprising a drill handle, wherein one end of the drill handle is provided with a drill body, one end of the drill body is provided with a drill rod, the outer surface of the drill rod is provided with spiral grains, the middle surface of the drill bit is embedded and provided with the polycrystalline diamond block for drilling, the surface of one side of the drill bit and the outer side of the polycrystalline diamond block are provided with raised patterns, the number of the raised patterns is at least two, the number of each row of raised patterns is at least three, the raised patterns and the drill bit are connected in an integrated manner, the middle part of the polycrystalline diamond block forms a continuous bending shape, the bending part forms an inward groove, the drill bit is provided with a protruding part matched with the groove for limiting the polycrystalline diamond block, the superhard micro drill bit can realize and enhance the hardness of the polycrystalline diamond bit, the resistance between the drill bit of the drill bit and the workpiece is increased, the punching speed and the punching quantity are increased, and the working efficiency is improved.

Description

Superhard micro drill bit welded with polycrystalline diamond

Technical Field

The utility model relates to the technical field of drill bits for processing circuit boards, in particular to a superhard micro drill bit welded with polycrystalline diamond.

Background

With the development of printed circuit boards from single-layer boards to double-sided boards and towards high-precision and high-density multi-layer boards, the micro drill used for processing the printed circuit integrated board continuously advances to the requirements of high hardness, high wear resistance and high bending resistance, and the hard alloy bar has insufficient physical properties, therefore, only a better material than the bar material can be found to replace the bar material, so as to meet the requirement of the circuit board drilling which is different day by day, the micro-drill products manufactured by the domestic printed circuit board processing micro-drill cutter manufacturing enterprises at present, the root fracture is easy to occur in the process of processing the multilayer printed circuit board, which causes the damage and the stamping of the board, and the conditions of chip removal difficulty, deflection and hole deviation often occur, and the quality of the hole wall of the processed multilayer printed circuit board cannot meet the complex requirements of downstream customers on drilling, so that a novel product for solving the problems is urgently needed.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

Aiming at the problems in the prior art, the utility model aims to provide a superhard micro drill welded with polycrystalline diamond, which can be realized by enhancing the hardness of the drill, increasing the resistance between a drill bit and a workpiece, improving the punching speed and the punching quantity and improving the working efficiency.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

The utility model provides a welding has superhard micro-drill of polycrystalline diamond, includes the drillstock, the body of boring is installed to the one end of drillstock, and the one end of body of boring is equipped with the drilling rod, and the spiral line has been seted up to the surface of drilling rod, and the one end of drilling rod is equipped with the drill bit, and the polycrystalline diamond piece that is used for drilling is installed in the middle surface embedding of drill bit.

Furthermore, the other end of the drill handle is provided with a chamfer.

Furthermore, a convex pattern is arranged on one side surface of the drill and located on the outer side of the polycrystalline diamond block.

Furthermore, the connection mode of drillstock, drill body and drill bit is the integral type and is connected, and the connection mode of glomerocryst diamond piece and drill bit is embedded welding.

Furthermore, the number of the raised patterns is at least two rows, the number of the raised patterns in each row is at least three, and the raised patterns are connected with the drill bit in an integrated manner.

Furthermore, the other end of the drill handle is provided with a notch.

Further, the number of the spiral threads is two.

Furthermore, the middle part of polycrystalline diamond piece forms continuous form of buckling, and the department of buckling forms the recess to the inboard, be equipped with on the drill bit with the protruding portion of recess looks adaptation be used for spacing polycrystalline diamond piece.

Further, the tip of drillstock corresponds towards boring the body and has seted up the storage tank, the bar spacing groove has been seted up to the side of storage tank, the side of boring the body corresponds bar spacing groove fixed mounting has a bar stopper, and the tip of bar stopper is provided with the slope surface that the gradient is thirty to fifty degrees, bar spacing inslot portion is provided with the magnet piece that corresponds with slope surface.

Furthermore, the end portion of the drill bit is an inclined plane and protrudes outwards, the end portion of the drill bit forms four cutting faces, the four cutting faces are opposite to each other in pairs, an included angle is formed between each cutting face and the side face of the drill bit, the included angle is one hundred and ten degrees to one hundred and twenty degrees, an included angle is formed between each cutting face and the polycrystalline diamond block, the included angle is one hundred and fifty degrees to one hundred and seventy degrees, the end portion of the polycrystalline diamond block protrudes out of the drill bit, and the thickness of the polycrystalline diamond block is gradually reduced.

3. Advantageous effects

Compared with the prior art, the utility model has the advantages that:

(1) this scheme, through an extreme point embedding polycrystalline diamond piece at the drill bit, the hardness that can be great increase drill bit point is do benefit to more and is drilled the processing to the higher various integrated panel of hardness, has also reduced the wearing and tearing of drill bit moreover, increases the drill bit life.

(2) Meanwhile, the raised patterns are designed on the outer side of the drill bit, so that the resistance between the drill bit of the drill bit and a workpiece is increased, the punching speed and the punching quantity are increased, and the working efficiency is improved.

Drawings

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

FIG. 2 is an enlarged view of a portion A of FIG. 1 according to the present invention;

FIG. 3 is a schematic side view of the present invention;

FIG. 4 is a schematic view of the connection structure of the drill shank and the drill body according to the present invention;

FIG. 5 is an enlarged view of a portion B of FIG. 4 according to the present invention.

The reference numbers in the figures illustrate:

1. a drill shank; 2. drilling a body; 3. a drill stem; 4. helical thread; 5. a drill bit; 6. chamfering; 7. a polycrystalline diamond mass; 8. raised patterns; 9. a groove; 10. a protrusion.

Detailed Description

The technical solution in 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; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

Example 1:

referring to fig. 1-3, a superhard micro drill welded with polycrystalline diamond comprises a drill handle 1, a drill body 2 mounted at one end of the drill handle 1, a drill rod 3 arranged at one end of the drill body 2, a spiral thread 4 arranged on the outer surface of the drill rod 3, a drill bit 5 arranged at one end of the drill rod 3, and a polycrystalline diamond block 7 embedded in the middle surface of the drill bit 5 for drilling.

Referring to fig. 1, the other end of the drill shank 1 is provided with a chamfer 6.

Referring to fig. 3, a raised pattern 8 is formed on one side surface of the drill bit 5 and outside the polycrystalline diamond mass 7.

Referring to fig. 2, the drill shank 1, the drill body 2 and the drill bit 5 are integrally connected, and the polycrystalline diamond block 7 and the drill bit 5 are welded in an embedded manner.

Through polycrystalline diamond 7's setting, can increase drill bit 6 hardness, be favorable to processing the work piece that hardness is higher, also reduced drill bit 6's wearing and tearing moreover, increase drill bit life.

Referring to fig. 3, the number of the raised patterns 8 is at least two rows, the number of the raised patterns 8 in each row is at least three, and the raised patterns 8 are connected with the drill bit 5 in an integrated manner.

Through the setting of protruding decorative pattern 8, increased the resistance between drill bit 6 and the work piece, increased the speed of punching, improved work efficiency.

The other end of the drill shank 1 is provided with a notch, not shown in the figure.

Referring to fig. 2, the number of the spiral threads 4 is two.

Referring to fig. 3, the middle portion of the polycrystalline diamond block 7 is formed into a continuous bent shape, the bent portion is formed into an inward groove 9, and the drill bit 5 is provided with a protrusion 10 adapted to the groove 9 for limiting the polycrystalline diamond block 7.

Referring to fig. 4-5, the end of the drill shank 1 is correspondingly provided with an accommodating groove toward the drill body 2, the side surface of the accommodating groove is provided with a strip-shaped limiting groove, the side surface of the drill body 2 is fixedly provided with a strip-shaped limiting block corresponding to the strip-shaped limiting groove, the strip-shaped limiting block is a metal component, the end of the strip-shaped limiting block is provided with a slope surface with an inclination of thirty to fifty degrees, and a magnet block corresponding to the slope surface is arranged inside the strip-shaped limiting groove;

when the inclination is thirty degrees, the magnet block can well adsorb the strip-shaped limiting block;

when the inclination is fifty degrees, different drill bits 5 can be more conveniently replaced while adsorbing;

when the gradient is forty-five degrees, the adsorption effect and the convenience degree of replacement can be balanced, and the drilling device is more suitable for drilling of multilayer printed circuit boards.

Referring to fig. 2, the end of the drill bit 5 is an inclined plane and protrudes outward, and the end of the drill bit forms four cutting faces, the four cutting faces are opposite to each other in pairs, an included angle a is formed between the cutting faces and the side face of the drill bit 5, the included angle a is one hundred and ten degrees to one hundred and twenty degrees, an included angle b is formed between the cutting faces and the polycrystalline diamond block 7, the included angle b is one hundred and fifty degrees to one hundred and seventy degrees, the end of the polycrystalline diamond block 7 protrudes out of the drill bit 5, and the thickness of the polycrystalline diamond block is gradually reduced.

When in use: at first with whole drill bit through the drill handle 1 install high-speed drilling machine bed on, drive drill handle 1 through the drilling machine and rotate, bore body 2 simultaneously, drilling rod 3 and drill bit 6 rotate simultaneously, when the panel contact with wanting drilling, polycrystalline diamond piece 7 at first contacts with circuit panel, punch on the panel surface, high rigidity through polycrystalline diamond piece 7, make the drill bit do benefit to more and carry out drilling work on no halogen panel, also reduce the wearing and tearing of drill bit 6 simultaneously, the life of drill bit is prolonged, secondly when punching, protruding decorative pattern 8 can increase the resistance of drill bit 6 and work piece, thereby the speed of punching has been improved, and the work efficiency is improved, and the use effect is better.

The foregoing is only a preferred embodiment of the present invention; the scope of the utility model is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.

Claims

1. The utility model provides a welding has superhard micro-drill of polycrystalline diamond, includes drillstock (1), its characterized in that: a drill body (2) is installed at one end of the drill handle (1), a drill rod (3) is arranged at one end of the drill body (2), spiral grains (4) are formed in the outer surface of the drill rod (3), a drill bit (5) is arranged at one end of the drill rod (3), and a polycrystalline diamond block (7) for drilling is embedded and installed in the middle surface of the drill bit (5);

the drill handle is characterized in that a containing groove is correspondingly formed in the end portion of the drill handle (1) towards the drill body (2), a strip-shaped limiting groove is formed in the side face of the containing groove, and a strip-shaped limiting block is fixedly mounted on the side face of the drill body (2) corresponding to the strip-shaped limiting groove.

2. The polycrystalline diamond bonded superhard micro drill bit of claim 1, wherein: the other end of the drill handle (1) is provided with a chamfer (6).

3. The polycrystalline diamond bonded superhard micro drill bit of claim 1, wherein: and a convex pattern (8) is arranged on the surface of one side of the drill bit (5) and positioned on the outer side of the polycrystalline diamond block (7).

4. The polycrystalline diamond bonded superhard micro drill bit of claim 1, wherein: the drill handle (1), the drill body (2) and the drill bit (5) are connected in an integrated mode, and the polycrystalline diamond block (7) and the drill bit (5) are welded in an embedded mode.

5. A polycrystalline diamond welded superhard micro drill bit according to claim 3, wherein: the number of the raised patterns (8) is at least two rows, the number of the raised patterns (8) in each row is at least three, and the raised patterns (8) are connected with the drill bit (5) in an integrated manner.

6. The polycrystalline diamond bonded superhard micro drill bit of claim 1, wherein: the other end of the drill handle (1) is provided with a notch.

7. The polycrystalline diamond bonded superhard micro drill bit of claim 1, wherein: the number of the spiral threads (4) is two.

8. The polycrystalline diamond bonded superhard micro drill bit of claim 1, wherein: the middle part of polycrystalline diamond piece (7) forms continuous bending shape, and the department of buckling forms inside recess (9), be equipped with on drill bit (5) with protruding portion (10) of recess (9) looks adaptation be used for spacing polycrystalline diamond piece (7).

9. The polycrystalline diamond bonded superhard micro drill bit of claim 1, wherein: the tip of bar stopper is provided with the slope surface that the gradient is thirty to fifty degrees, bar spacing inslot portion is provided with the magnet piece that corresponds with domatic.

10. The polycrystalline diamond bonded superhard micro drill bit of claim 1, wherein: the tip of drill bit (5) is the inclined plane and outwards protrudes, and its tip forms four cutting faces, and four cutting faces are two liang relative, form contained angle (a) between cutting face and the drill bit (5) side, the angle size of contained angle (a) is one hundred ten degrees to one hundred twenty degrees, forms contained angle (b) between cutting face and polycrystalline diamond piece (7), the angle size of contained angle (b) is one hundred fifty degrees to one hundred seventy degrees, the tip protrusion in drill bit (5) of polycrystalline diamond piece (7), and thickness reduces gradually.