CN211762025U

CN211762025U - A disconnected silk drill bit for drilling of software pcb

Info

Publication number: CN211762025U
Application number: CN201921470657.9U
Authority: CN
Inventors: 张建新
Original assignee: Kunshan Yishiteng Alloy Tool Co ltd
Current assignee: Kunshan Yishiteng Alloy Tool Co ltd
Priority date: 2019-09-05
Filing date: 2019-09-05
Publication date: 2020-10-27
Anticipated expiration: 2029-09-05

Abstract

The utility model discloses a disconnected silk drill bit for drilling of software pcb, including the tool post, the one end of tool post is provided with the tool bit, the other end of tool bit is provided with the drill point, the middle part of drill point is provided with the cutting face, the cutting face includes main blade and vice blade, one side of main blade is provided with vice blade, the both sides extension of cutting face is provided with margin and ditch back respectively, the utility model discloses a design a new disconnected silk drill bit for drilling of software pcb, solved the drill bit because the defect of cutting part design has the positioning accuracy not good enough to lead to the not high problem of drilling accuracy; the problem that chips cannot be discharged in time, the performance of other processing circuit boards is seriously influenced along with the rise of the temperature of a drill hole, and the accumulation of chips can cause wire winding is solved; the problem that the drilling precision becomes poor after the cutting edge is turned and ground, and serious 'cloak' can occur during drilling is avoided, the service life of the drill bit is prolonged, and the working efficiency is improved.

Description

A disconnected silk drill bit for drilling of software pcb

Technical Field

The utility model belongs to the technical field of the electroplax drill bit, concretely relates to disconnected silk drill bit for drilling of software pcb.

Background

With the rapid development of electronic information technology, the integration level of electronic products is higher and higher. Along with the improvement of the integration level of the printed circuit board, the manufacture of the printed circuit board is also more refined, the drilling requirement is higher and higher, and the quality requirements of the products are not met by the existing drill.

The existing drill bit has the defects of poor positioning accuracy due to the design defects of a cutting part, so that the drilling accuracy is not high, an auxiliary cutter cutting groove is short when the common drill bit drills, and meanwhile, a drill bit cutter surface is ground again, a chip breaking groove position can generate displacement due to the defect design problem, the chip and chip removal of the drill bit are seriously influenced, the chip cannot be discharged in time, the performance of other processing circuit boards is seriously influenced along with the rise of the drilling temperature, and the problem of wire winding caused by the accumulation of the chip removal is solved; the drilling precision becomes worse after the cutting edge is turned and ground, and serious 'cloak' can appear during drilling, so that the service life of the drill bit and the working efficiency are directly reduced, and the manufacturing cost of the circuit board is increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a disconnected silk drill bit for drilling of software pcb to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the wire breaking drill bit comprises a cutter post, a cutter head is arranged at one end of the cutter post, a drill point is arranged at the other end of the cutter head, a cutting face is arranged in the middle of the drill point and comprises a main blade and an auxiliary blade, the auxiliary blade is arranged on one side of the main blade, two sides of the cutting face extend to be respectively provided with a cutting edge and a groove back, the cutting edge extends towards the end of the cutter head in a spiral shape, a spiral groove is formed between the cutting edge and the groove back, and a wire breaking groove is formed in one side of the cutter post.

Preferably, the included angle of the groove of the spiral groove is thirty degrees.

Preferably, the included angle of the end part of the drill tip is one hundred sixty-five degrees.

Preferably, the main blade, the auxiliary blade and the cutter head are of an integrated structure.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model designs a new broken wire drill bit for drilling soft pcb, which solves the problem that the drill bit has poor positioning precision due to the defect of the design of the cutting part, thereby causing low drilling precision;

the problem that chips cannot be discharged in time, the performance of other processing circuit boards is seriously influenced along with the rise of the temperature of a drill hole, and the accumulation of chips can cause wire winding is solved; the problem that the drilling precision becomes poor after the cutting edge is turned and ground, and serious 'cloak' can occur during drilling is avoided, the service life of the drill bit is prolonged, and the working efficiency is improved.

Drawings

Fig. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic view of a partial structure of the tool bit of the present invention;

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

in the figure: 1. a knife post; 2. a cutter head; 3. drilling a tip; 4. a main blade; 5. a secondary blade; 6. a margin; 7. the back of the ditch; 8. a helical groove; 9. a wire breaking groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.

Referring to fig. 1 to 3, the present invention provides a technical solution of a wire breaking drill bit for drilling a soft pcb: the utility model provides a disconnected silk drill bit for drilling of software pcb, including sword post 1, the one end of sword post 1 is provided with tool bit 2, the other end of tool bit 2 is provided with drill point 3, for convenient location, the middle part of drill point 3 is provided with the cutting face, the cutting face includes main blade 4 and vice blade 5, one side of main blade 4 is provided with vice blade 5, the both sides extension of cutting the face is provided with margin 6 and ditch back of the body 7 respectively, margin 6 is the tip extension of heliciform to tool bit 2, form helicla flute 8 between margin 6 and the ditch back of the body 7, for the convenience of the chip removal, one side of sword post 1 is provided with disconnected silk groove 9, for the convenience of cutting disconnected bits silk.

In this embodiment, preferably, the included angle of the groove of the spiral groove 8 is thirty degrees, so as to facilitate chip removal.

In the present embodiment, the included angle of the end of the drill tip 3 is preferably one hundred sixty-five degrees for positioning convenience.

In this embodiment, the primary blade 4, the secondary blade 5 and the cutter head 2 are preferably of an integral structure, so as to ensure the rigidity of the cutter head 2.

The utility model discloses a theory of operation and use flow: the utility model discloses when using, on the fixed blade holder of lathe is installed to tool post 1, can aim at drill point 3 and need punch the position and laminate on the pcb electroplax, make drill point 3 fix a position on the pcb electroplax, the condition of skew can not take place, drive tool post 1 and rotate, tool post 1 drives tool bit 2 and rotates together, main blade 4 and the assistant blade 5 on the tool bit 2 cut the pcb electroplax, the smear metal is along helicla flute 8 smooth department of revolving and can be cut the end with the cutting through the disconnected silk groove 9 of design, avoid the problem of kinking.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a disconnected silk drill bit for drilling of software pcb, includes tool post (1), its characterized in that: a cutter head (2) is arranged at one end of the cutter post (1), a drill point (3) is arranged at the other end of the cutter head (2), a cutting face is arranged in the middle of the drill point (3), the cutting face comprises a main blade (4) and an auxiliary blade (5), the auxiliary blade (5) is arranged on one side of the main blade (4), a cutting edge (6) and a groove back (7) are respectively arranged on two sides of the cutting face in an extending mode, the cutting edge (6) extends towards the end portion of the cutter head (2) in a spiral mode, a spiral groove (8) is formed between the cutting edge (6) and the groove back (7), and a wire breaking groove (9) is arranged on one side of the cutter post (1); the included angle of the grooves of the spiral groove (8) is thirty degrees; the included angle of the end part of the drill tip (3) is one hundred sixty five degrees; the main blade (4), the auxiliary blade (5) and the tool bit (2) are all of an integrated structure.