阅读说明：本技术 一种新型cmc涂层钻针 (Novel CMC coating drill point ) 是由 唐杰 钟文森 张磊 郑逸 于 2021-08-06 设计创作，主要内容包括：本发明公开了一种新型CMC涂层钻针,具体涉及钻针领域,包括针体和针柄,所述针柄靠近针体的一侧一体成型有过渡斜肩,所述针体与过渡斜肩可拆卸连接,所述针体的外周侧开设有螺旋槽；所述过渡斜肩的内部贯穿开设有进气通道,所述针体为中空结构构件,所述进气通道与针体相互连通,所述螺旋槽内部贯穿开设有排屑气孔。本发明通过让加压空气从进气通道进入到针体内,使气体从排屑气孔中喷出,从而可将卡在螺旋槽内的碎屑吹掉,避免钻针排屑困难,且拆卸的针体连接方式,使得钻针方便拆卸更换,极大地节约钻针整体的数量,减少更换钻针所需的时间,提供工作效率。(The invention discloses a novel CMC (carboxy methyl cellulose) coating drill point, and particularly relates to the field of drill points, which comprises a needle body and a needle handle, wherein a transition inclined shoulder is integrally formed on one side of the needle handle close to the needle body, the needle body is detachably connected with the transition inclined shoulder, and a spiral groove is formed on the peripheral side of the needle body; the inside of transition sloping shoulder runs through and has seted up inlet channel, the needle body is hollow structure component, inlet channel communicates each other with the needle body, the spiral flute is inside to run through and has seted up the chip removal gas pocket. According to the invention, pressurized air enters the needle body from the air inlet channel, so that gas is sprayed out from the chip removal air hole, thus chips clamped in the spiral groove can be blown off, the difficulty in chip removal of the drill point is avoided, and the drill point is convenient to disassemble and replace due to the detachable connection mode of the needle body, so that the whole number of the drill point is greatly saved, the time for replacing the drill point is reduced, and the working efficiency is improved.)

1. The utility model provides a novel CMC coats and bores needle, includes needle body (1) and needle handle (2), its characterized in that: a transition oblique shoulder (3) is integrally formed on one side, close to the needle body (1), of the needle handle (2), the needle body (1) is detachably connected with the transition oblique shoulder (3), and a spiral groove (4) is formed in the outer peripheral side of the needle body (1);

the inside of transition sloping shoulder (3) is run through and has been seted up inlet channel (32), needle body (1) is the hollow structure component, inlet channel (32) and needle body (1) communicate each other, spiral groove (4) are inside to run through and have been seted up chip removal gas pocket (5).

2. The novel CMC coated drill pin of claim 1, wherein: the needle body (1) is close to the tip integrated into one piece of transition sloping shoulder (3) has installation lug (6), the external screw thread has been seted up to the periphery side of installation lug (6), transition sloping shoulder (3) are close to the one end of needle body (1) and have been seted up mounting groove (31), the inboard of mounting groove (31) is seted up there is the internal thread, installation lug (6) and mounting groove (31) looks adaptation.

3. The novel CMC coated drill pin of claim 2, wherein: the air inlet channel (32) is arranged on the inner peripheral side of the mounting groove (31), and the mounting lug (6) is a cylindrical structural member.

4. The novel CMC coated drill pin of claim 1, wherein: the number of the chip removal air holes (5) is multiple, and the chip removal air holes (5) are uniformly distributed in the spiral groove (4).

5. The novel CMC coated drill pin of claim 1, wherein: the end part of the needle body (1) far away from the transition inclined shoulder (3) is fixedly embedded with a reinforcing pointed end (11), and the outer circumferential side of the needle body (1) is coated with a CMC coating.

6. The novel CMC coated drill pin of claim 1, wherein: the helix angle of the spiral groove (4) is 30-40 degrees, and the inclination angle between the outer side edge of the transition inclined shoulder (3) and the axis of the needle body (1) is 25-45 degrees.

Technical Field

The invention relates to the technical field of drill points, in particular to a novel CMC coated drill point.

Background

A Printed Circuit Board (PCB) is a composite material consisting of a conductive layer and a dielectric layer, wherein the dielectric layer consists of resin and glass fiber. Drilling is one of the commonly used techniques in PCB processing, and even the drilling cost can account for 40% of the printed circuit board manufacturing cost. The drill hole is generally made of a fine drill point made of hard alloy, and has high hardness and good wear resistance.

However, as the hole diameter of the PCB is smaller and finer, the density of the PCB board is higher and higher, the existing drill point cannot meet the requirement, and many defects exist in use, such as difficulty in chip removal and inconvenience in replacement after the pin is broken.

Disclosure of Invention

In order to overcome the above defects in the prior art, embodiments of the present invention provide a novel CMC coated drill bit, and the problems to be solved by the present invention are: the existing drill point has difficult chip removal and is inconvenient to replace after the drill point is broken.

In order to achieve the purpose, the invention provides the following technical scheme: a novel CMC coating drill needle comprises a needle body and a needle handle, wherein a transition inclined shoulder is integrally formed on one side of the needle handle close to the needle body, the needle body is detachably connected with the transition inclined shoulder, and a spiral groove is formed on the peripheral side of the needle body;

the inside of transition sloping shoulder runs through and has seted up inlet channel, the needle body is hollow structure component, inlet channel communicates each other with the needle body, the spiral flute is inside to run through and has seted up the chip removal gas pocket.

In a preferred embodiment, a mounting lug is integrally formed at an end portion of the needle body close to the transition shoulder, an external thread is formed on an outer peripheral side of the mounting lug, a mounting groove is formed at one end of the transition shoulder close to the needle body, an internal thread is formed on an inner side of the mounting groove, and the mounting lug is matched with the mounting groove.

Through adopting above-mentioned technical scheme, be convenient for realize the demountable installation of needle body and needle handle.

In a preferred embodiment, the air intake passage is opened on an inner peripheral side of the mounting groove, and the mounting projection is a cylindrical structural member.

In a preferred embodiment, the number of the chip removal air holes is provided with a plurality, and the plurality of the chip removal air holes are uniformly distributed in the spiral groove.

Through adopting above-mentioned technical scheme, a plurality of chip removal gas pockets are favorable to blowing out the piece homoenergetic that the helicla flute each place blocked.

In a preferred embodiment, the end of the needle body far away from the transition sloping shoulder is fixedly embedded with a reinforcing sharp head, and the outer periphery side of the needle body is coated with a CMC coating.

By adopting the technical scheme, the reinforced pointed end can be made of diamond, so that the PCB substrate can be conveniently drilled, the abrasion of the pointed end of the needle body is reduced, the service life of the needle body is favorably prolonged, the arrangement of the CMC coating is favorable for protecting the needle body, the antirust capacity of the needle body and the strength of the needle body are improved, and the service life of the needle body is further prolonged.

In a preferred embodiment, the helix angle of the spiral groove is 30-40 degrees, and the inclination angle between the outer side edge of the transition inclined shoulder and the axis of the needle body is 25-45 degrees.

The invention has the technical effects and advantages that:

1. according to the invention, the air enters the needle body from the air inlet channel by pressurization of an external air source, and the air is sprayed out from the chip removal air hole, so that chips clamped in the spiral groove can be blown off, the chip removal difficulty of the drill point is avoided, and the precision of next drilling is ensured;

2. according to the detachable drill point, the installation lug is in threaded connection and matching with the installation groove by rotating the drill point body, so that the quick installation of the drill point body and the drill point handle is realized, the drill point is convenient to detach and replace by a detachable connection mode of the drill point body, the integral number of the drill point is greatly saved, the time required for replacing the drill point is reduced, and the working efficiency is improved.

Drawings

FIG. 1 is a schematic front view of the overall structure of the present invention;

FIG. 2 is a schematic side view of the overall structure of the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 1 according to the present invention.

The reference signs are: 1 needle body, 11 strengthening sharp heads, 2 needle handles, 3 transition sloping shoulders, 31 mounting grooves, 32 air inlet channels, 4 spiral grooves, 5 chip removal air holes and 6 mounting lugs.

Detailed Description

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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.

The novel CMC coated drill point provided by the embodiment of the invention can comprise a needle body 1 and a needle handle 2, wherein a transition inclined shoulder 3 is integrally formed on one side of the needle handle 2 close to the needle body 1, the needle body 1 is detachably connected with the transition inclined shoulder 3, and a spiral groove 4 is formed on the peripheral side of the needle body 1.

Referring to the attached drawings 1-3 in the specification, an air inlet channel 32 is formed in the transition inclined shoulder 3 of the novel CMC coated drill point, the needle body 1 is a hollow structural member, the air inlet channel 32 is communicated with the needle body 1, and a chip removal air hole 5 is formed in the spiral groove 4.

As shown in fig. 1 to 3, the implementation scenario specifically includes: when in actual use, earlier with needle body 1 and the oblique shoulder 3 erection joint of transition, the rethread connecting pipe is with inlet channel 32 and outside air supply intercommunication, start drive arrangement, make needle body 1 about and rotatory, contact when needle body 1 and PCB base plate, the piece that the drilling produced moves up from downthehole discharge along helicla flute 4, if the piece card is in helicla flute 4, the pressurization of accessible outside air supply, let the air enter into needle body 1 from inlet channel 32, make gaseous blowout from chip removal gas pocket 5, thereby can blow the piece of card in helicla flute 4, avoid drill needle 1 chip removal difficulty, the precision of drilling next time has been guaranteed, the problem of the drilling chip removal difficulty that exists among the prior art has specifically been solved to this embodiment.

As shown in fig. 3, an installation protrusion 6 is integrally formed at an end of the needle body 1 close to the transition shoulder 3, an external thread is formed on an outer circumferential side of the installation protrusion 6, an installation groove 31 is formed at an end of the transition shoulder 3 close to the needle body 1, an internal thread is formed inside the installation groove 31, and the installation protrusion 6 is matched with the installation groove 31.

As shown in fig. 1 and 2, the intake passage 32 opens on the inner peripheral side of the mounting groove 31, and the mounting boss 6 is a cylindrical structural member.

As shown in fig. 1, the number of the chip discharge air holes 5 is provided with a plurality of chip discharge air holes 5, and the plurality of chip discharge air holes 5 are uniformly distributed in the spiral groove 4.

As shown in fig. 1 and 2, the end of the needle body 1 remote from the transition shoulder 3 is fixedly embedded with a reinforcement spike 11, and the outer circumference of the needle body 1 is coated with a CMC coating.

As shown in figure 1, the helix angle of the spiral groove 4 is 30-40 degrees, and the inclination angle between the outer side edge of the transition inclined shoulder 3 and the axis of the needle body 1 is 25-45 degrees.

As shown in fig. 1 to 3, the implementation scenario specifically includes: when in actual use, when needle body 1 appears breaking the needle or needs the installation to be changed, rotatable needle body 1, make installation lug 6 and the cooperation of mounting groove 31 threaded connection, realize the quick installation of needle body 1 and needle handle 2, detachable needle body 1 connected mode, make the drill point conveniently dismantle the change, even the drill point appears breaking the needle when using, also only need to change needle body 1 can, greatly practice thrift the holistic quantity of drill point, reduce the required time of change drill point, the work efficiency is provided, the problem of the drill point that exists among the prior art is not convenient for dismantle the change has specifically been solved to this embodiment.

In summary, the following steps: according to the invention, pressurized air enters the needle body 1 from the air inlet channel 32, so that air is sprayed out from the chip removal air hole 5, thus chips clamped in the spiral groove 4 can be blown off, the difficulty in chip removal of the drill point 1 is avoided, and the drill point is convenient to disassemble and replace due to the connection mode of the disassembled needle body 1, so that the whole number of the drill point is greatly saved, the time for replacing the drill point is reduced, and the working efficiency is improved.

And finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.