CN211360775U

CN211360775U - High strength drill point convenient to chip removal

Info

Publication number: CN211360775U
Application number: CN201922417852.1U
Authority: CN
Inventors: 黄鹏飞; 刘能
Original assignee: Individual
Current assignee: Sichuan Huahongrui Tools Co.,Ltd.
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-08-28
Anticipated expiration: 2029-12-27

Abstract

The utility model relates to a drill point cutter field discloses a high strength drill point convenient to chip removal, including the drill bit, bore body and drillstock, the drill bit and drillstock are fixed respectively to the both ends of boring the body, and the outer periphery of boring the body is equipped with the chip groove more than the twice, and the chip groove is spiral distribution in the outer periphery of boring the body, and the width of chip groove reduces gradually from the drill bit to the direction of boring the body, and the distance between the chip groove reduces gradually from the drill bit to the direction of boring, and the chip groove appears distributing side by side gradually, and the pitch of chip groove increases gradually from the drill bit to the direction of boring the body. The chip removal capacity of the drill point is enhanced, and the integral rigidity strength of the drill point is improved.

Description

High strength drill point convenient to chip removal

Technical Field

The utility model relates to a drill point cutter field indicates a high strength drill point especially.

Background

When drilling and processing materials such as FPC, COF, COB, lC carrier plates, micro-measurement engineering plastics and the like, a drill point cutter needs to be adopted for processing the materials, and due to the fact that the diameter of the adopted cutter is too small, in the drilling process, due to the fact that the rigidity strength of a drill point is insufficient, cutter breakage is prone to happen in the drilling process, and the rigidity strength of the drill point needs to be improved.

The double-sided single-hook drill point disclosed in the patent No. CN208758681U comprises a drill handle part and a drill edge part at the front end of the drill handle part, wherein the drill edge part is provided with two spiral cutting edges, the front ends of the two spiral cutting edges form a cutting end edge at the drill edge part, the front end of the drill edge part is provided with two spiral chip-removing grooves, the two spiral chip-removing grooves are combined into one at the rear end of the drill edge part, the rigidity is high, and the drill point is not easy to break.

The drill point combines the two spiral chip removing grooves into one groove, so that the rigidity strength of the drill point is improved, but the chip removing capability of the drill point is reduced, so that chips are accumulated in the chip removing grooves, the cutting resistance of the drill point is increased, and the situation of cutter breakage occurs.

Disclosure of Invention

In order to solve the problem, the utility model provides a high strength drill point convenient to chip removal, its main objective is that the notch through twice chip groove diminishes gradually, and the groove depth of two chip grooves becomes shallow gradually, and two chip grooves lean on gradually mutually, change two chip grooves and distribute side by side, and the pitch of chip groove increases gradually, improves the rigidity intensity of drill point and improves the chip removal ability simultaneously.

In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a high strength drill point convenient to chip removal, includes drill bit, bores body and drillstock, the outer periphery of boring the body is equipped with the chip groove more than the twice, the chip groove be spiral distribution in the outer periphery of boring the body, the width of chip groove reduces gradually from the drill bit to boring the body direction, the groove depth of chip groove becomes shallow gradually from the drill bit to boring the body direction, distance between the chip groove reduces gradually from the drill bit to boring the body direction, lean on between the chip groove gradually, lean on the back mutually the chip groove encircle distribute in side by side in the outer periphery of boring the body, the pitch of chip groove increases gradually from the drill bit to boring the body direction. The groove widths of the two chip grooves of the drill point are gradually reduced, so that the rigidity strength of the drill point is ensured; the two chip removal grooves are gradually leaned and spirally distributed in parallel, so that the chip removal capacity of the drill point is ensured; the thread pitches of the two chip grooves are gradually increased to ensure the rigidity strength of the drill point, and the depths of the two chip grooves are gradually reduced to ensure the chip removal capability of the drill point.

Specifically, the chip grooves are distributed in a central symmetry manner on the drill blade.

Specifically, the angle of the drill edge is 120-130 degrees, the included angle formed by the chip removal groove and the axis of the drill body is 35-40 degrees, the chip removal space is ensured to be larger, and meanwhile, the cutting force of the drill edge is improved.

Specifically, the axial length of the two chip removal grooves which are distributed in parallel on the outer circumferential surface of the drill body occupies 50% -70% of the length of the drill body, and the chip removal space is ensured to be enough for chip accommodation.

Specifically, the diameter of the drill blade is 0.05-0.15 mm, the length of the drill body is 0.7-3.0 mm, more precise drilling precision is provided, and meanwhile the rigidity strength of the drill point is met.

Specifically, the high-strength drill point is made of hard alloy materials.

Specifically, the two chip grooves are located at the position of the cutter collecting position and are tangent.

Specifically, the one chip groove is advanced by 0.05 mm-0.15 mm in the axial direction of the drill body at the cutting-up position relative to the other chip groove.

The beneficial effects of the utility model reside in that: the traditional drill point is designed to gradually combine two chip grooves into one chip groove, so that the drill point with good rigidity and strength is obtained, but the drill point has the problem of insufficient chip removal capability, so that cutting chips are accumulated in the chip groove, and the drill point is broken; the groove width of the two chip grooves of the drill point is gradually reduced, and the thread pitch of the two chip grooves is gradually increased, so that the drill point is ensured to have better rigidity strength; meanwhile, the groove depths of the two chip grooves and the two chip grooves are reserved and gradually become shallow, and the chip removal capacity of the drill point is enhanced.

Drawings

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

The reference numbers illustrate: 1. a drill edge; 2. drilling a body; 3. a chip groove.

Detailed Description

Please refer to fig. 1, for the utility model discloses a high strength drill point convenient to chip removal, including drill edge 1, bore body 2 and drillstock, drill edge 1 and drillstock are fixed respectively to the both ends of boring body 2, the outer periphery of boring body 2 is equipped with chip groove 3 more than the twice, chip groove 3 be spiral distribution in the outer periphery of boring body 2, chip groove 3's width reduces from drill edge 1 to 2 directions of boring body gradually, chip groove 3's groove depth becomes shallow from drill edge 1 to 2 directions of boring body gradually, distance between chip groove 3 reduces from drill edge 1 to 2 directions of boring body gradually, lean on gradually between chip groove 3, lean on the back mutually, chip groove 3 encircle and distribute in the outer periphery of boring body 2, chip groove 3's pitch increases from drill edge 1 to 2 directions of boring body gradually.

The utility model discloses an application principle: when materials such as FPC, COF, COB, lC carrier plates, micrometering engineering plastics and the like are drilled, the smaller the diameter of the adopted drill point is, the higher the processing precision is, and the formed electronic equipment is more precise and smaller in size. However, the smaller the diameter of the drill point is, the problem of insufficient rigidity strength exists, the situation of cutter breaking is easy to occur in the drilling process, in order to increase the rigidity strength of the drill point, two chip grooves 3 are combined to form one chip groove, the drill point has the problem of insufficient chip removal capability, and in the drilling process, chips are accumulated in the chip grooves 3 and cannot be removed in time, so that the situation of cutter breaking is caused.

Therefore, the utility model discloses in, the groove width with twice chip groove 3 of drill point diminishes gradually, the groove depth of twice chip groove 3 becomes shallow gradually, the pitch of twice chip groove 3 increases gradually, at the in-process of drilling, the produced smear metal of drill edge 1 department is most, it is the biggest at the groove width and the groove depth of drill edge 1 department, space for the smear metal provides the emission, improve the chip removal ability of drill point, and along with 2 edges drillstock directions of drilling body, the smear metal of formation is less, through the groove width that reduces chip groove 3 gradually, the rigidity intensity of drill point is improved to the groove depth and pitch, guarantee that the drill point has good chip removal ability and rigidity intensity. The drill handle is not the improvement part of the utility model, and the structure of the drill handle is omitted in the attached drawings of the specification.

As shown in fig. 1, the chip flutes 3 are two, and the chip flutes are distributed in the drill blade in a central symmetry manner.

As shown in fig. 1, the angle of the drill edge 1 is 120 to 130 degrees, and the included angle formed by the chip groove 3 and the axis of the drill body 2 is 35 to 40 degrees. The chip removal space is ensured to be larger, and the cutting force of the drill blade is improved.

As shown in fig. 1, in order to ensure the rigidity and the strength of the drill point, the axial length of the two flutes 3 which are distributed in parallel on the outer circumferential surface of the drill body 2 occupies 50-70% of the length of the drill body 2. Ensuring that the chip removal space is enough to contain chips.

As shown in figure 1, the diameter of the drill blade is 0.05 mm-0.15 mm, the length of the drill body is 0.7 mm-3.0 mm, and the high-strength drill point is made of hard alloy materials. Provides more precise drilling precision and simultaneously meets the rigid strength of the drill point.

As shown in fig. 1, the two flutes 3 are located at the cutting-up position, and the two flutes 3 are tangent.

As shown in fig. 1, one of the chip flutes 3 is cut in advance of 0.05mm to 0.15mm in the axial direction of the drill body 2 at the cutting position relative to the other chip flute 3.

The above embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by the technical solution of the present invention by those skilled in the art are all within the scope of the present invention as defined by the claims.

Claims

1. The utility model provides a high strength drill point convenient to chip removal, includes drill blade, bores body and drillstock, drill blade and drillstock are fixed respectively to the both ends of boring the body, its characterized in that: the outer periphery of boring the body is equipped with the chip groove more than the twice, the chip groove be spiral distribution in the outer periphery of boring the body, the width of chip groove reduces gradually from the drill bit to boring the body direction, the groove depth of chip groove becomes shallow gradually from the drill bit to boring the body direction, distance between the chip groove reduces gradually from the drill bit to boring the body direction, lean on mutually between the chip groove gradually, lean on the back mutually the chip groove encircle distribute side by side in the outer periphery of boring the body, the pitch of chip groove is from the drill bit to boring the body direction crescent.

2. The high strength drill point facilitating chip removal according to claim 1, wherein: the chip groove is twice, and the chip groove is in the drill edge is central symmetry distribution.

3. The high strength drill point facilitating chip removal according to claim 2, wherein: the angle of the drill edge is 120-130 degrees, and the included angle formed by the chip groove and the axis of the drill body is 35-40 degrees.

4. The high strength drill point facilitating chip removal according to claim 2, wherein: the axial length of the two chip grooves which are distributed in parallel on the outer circumferential surface of the drill body occupies 50-70% of the length of the drill body.

5. The high strength drill point facilitating chip removal according to claim 2, wherein: the diameter of the drill blade is 0.05 mm-0.15 mm, and the length of the drill body is 0.7 mm-3.0 mm.

6. The high-strength drill point facilitating chip removal according to any one of claims 1 to 5, wherein: the high-strength drill point is made of hard alloy materials.

7. The high strength drill point facilitating chip removal according to claim 2, wherein: the two chip grooves are located at the position of the cutter, and the two chip grooves are tangent.

8. The high strength drill point facilitating chip removal according to claim 7, wherein: one of the chip grooves is advanced 0.05 mm-0.15 mm in the axial direction of the drill body at the chip-collecting position relative to the other chip groove.