CN215943193U

CN215943193U - Drill bit for multilayer PCB circuit board

Info

Publication number: CN215943193U
Application number: CN202122350072.7U
Authority: CN
Inventors: 李昆仑; 王军祥
Original assignee: Shenzhen Xinhuanyu Precision Technology Co ltd
Current assignee: Shenzhen Xinhuanyu Precision Technology Co ltd
Priority date: 2021-09-27
Filing date: 2021-09-27
Publication date: 2022-03-04
Anticipated expiration: 2031-09-27

Abstract

The utility model discloses a drill bit for a multilayer PCB (printed circuit board), belongs to the technical field of metal drill bits, and solves the problems that in the prior art, when a circuit board is drilled, scraps generated by drilling processing influence the drilling process and influence an operator to observe the drilling precision, and two drilled holes need to be positioned and rounded after drilling is finished, so that electronic elements around the circuit board are damaged due to the failure in positioning; when the circuit board is drilled, the upper and lower orifices of the drill hole are chamfered by the two sets of chamfering members arranged on the drill rod, the drill hole is not required to be positioned and chamfered by a chamfering tool after the drilling is finished, and the electronic components around the drill hole cannot be damaged.

Description

Drill bit for multilayer PCB circuit board

Technical Field

The utility model belongs to the technical field of metal drill bits, and particularly relates to a drill bit for a multilayer PCB.

Background

At present, a drilling device for a PCB (printed circuit board) mainly adopts a mechanical drilling method, a drill bit is used for drilling the PCB, after the drilling is finished, two holes of the drilled hole are generally required to be chamfered by a chamfering tool, but electronic components and circuits on the PCB are distributed more densely, once an error occurs in alignment and positioning between the chamfering tool and the drilled hole, the electronic components, the circuits and the like on the PCB can be damaged, in addition, scraps generated in the drilling process can also greatly influence an operator to observe the drilling progress, and therefore, the utility model provides the drill bit for the multilayer PCB.

SUMMERY OF THE UTILITY MODEL

The utility model provides a drill bit for a multilayer PCB (printed circuit board), aiming at solving the problems that in the prior art, when a circuit board is drilled, scraps generated in drilling processing influence the drilling process and influence an operator to observe the drilling precision, and two drilled holes need to be positioned and rounded after drilling is finished, so that electronic elements around the circuit board are damaged due to the positioning failure.

The purpose of the utility model can be realized by the following technical scheme:

the utility model provides a drill bit for multilayer PCB circuit board, its includes the vertical drilling rod of installing on the arm, installs the antidandruff component at the drilling machine lateral part, and the bottom of drilling rod is coaxial to be provided with the drill bit, the inside cavity of drilling rod, the outer disc of drilling rod is provided with the through-hole, and the through-hole is provided with two sets ofly and respectively for the feed port that is close to the drill bit and the discharge opening that is close to the drilling rod top, and the antidandruff component is used for carrying out the piece suction discharge through feed port and discharge opening when the piece that the drilling rod produced through the drill bit drilling, still is provided with the chamfer component on the drilling rod, and the chamfer component is used for carrying out the radius angle to the drilling drill way mouth that drill bit work produced.

Preferably, the feeding holes and the discharging holes are arranged in an array mode along the circumferential direction of the drill rod.

Preferably, the chamfering component is provided with two groups of upper chamfering components and lower chamfering components located below the upper chamfering components, and the two groups of chamfering components are symmetrically arranged and comprise chamfering assemblies.

Preferably, the outer circular surface of the drill rod is provided with two mounting holes, and the two mounting holes are positioned on the same diameter of the drill rod;

the chamfering assemblies comprise chamfering tools positioned in the mounting holes, one ends of the chamfering tools are positioned in the drill rod and are connecting ends, the other ends of the chamfering tools are positioned outside the drill rod, the chamfering tools are in triangular prism structures, the bottom edges of the chamfering tools are cutting edges which are arranged in an inclined mode, and the distance between the cutting edges of the chamfering tools of the two chamfering assemblies is gradually reduced along the radial direction of the drill rod and in the direction from the circle center of the drill rod to the outer circular surface;

the side surface of the chamfering tool in the circumferential direction of the drill rod is provided with a damping hole, when the chamfering tool retracts into the drill rod, the damping hole is positioned in the mounting hole, and a damping piece is arranged in the damping hole;

the chamfering tool in each group of chamfering assemblies is provided with two groups corresponding to the mounting holes and is a chamfering tool a and a chamfering tool b respectively, and the chamfering tool a and the chamfering tool b are in sliding connection through a sliding part.

Preferably, the damping piece comprises two damping heads which are respectively arranged at two orifices of the damping hole in a sliding manner, and a spring b arranged between the two damping heads.

Preferably, the sliding part comprises a sleeve arranged at the connecting end of the chamfering tool a and a sliding rod arranged at the connecting end of the chamfering tool b, the extending directions of the sleeve and the sliding rod are both parallel to the distance direction between the chamfering tool a and the chamfering tool b, the free end of the sliding rod is slidably positioned in the sleeve, and a spring a positioned between the chamfering tool a and the chamfering tool b is sleeved outside the sleeve.

Preferably, the chip removing component comprises a sleeve ring coaxially and fixedly sleeved outside the drill rod, the sleeve ring is provided with two discharge holes in the vertical direction, the discharge holes are positioned between the two sleeve rings, the sleeve ring is coaxially and movably sleeved outside the sleeve ring, a sleeve shell is in sealing fit with the sleeve shell, and a connector is arranged outside the sleeve shell;

the chip removing component also comprises a suction machine, and an air pipe is detachably arranged between the suction machine and the joint.

Preferably, the housing is composed of two sets of semi-circular shells which are detachable, and the chip removing member further comprises a filter plate a arranged in the joint.

Preferably, be provided with between trachea and the suction machine and store up bits spare, store up bits spare including storing up the bits case, the up end of storing up the bits case is connected with the intake pipe, the lower terminal surface is connected with the outlet duct, the outlet duct is provided with filter plate b with the junction that stores up the bits case, intake pipe and trachea link up.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the scheme, the multiple groups of circuit boards are arrayed and clamped in the vertical direction, and the multiple groups of circuit boards are drilled at one time, so that the drilling efficiency is obviously improved;

2. when drilling, the upper and lower orifices of the drill hole are rounded through the two groups of chamfering components arranged on the drill rod, and the drill hole does not need to be positioned and rounded through a rounding cutter after the drilling is finished, so that the drilling efficiency of the circuit board is further improved, and electronic components around the drill hole cannot be damaged;

3. in drilling process, the piece suction that produces in will drilling the course of working is removed through the cooperation of suction machine and setting advance, discharge opening at the outer disc of drilling rod excircle face, on the one hand, prevents that the piece from causing the influence to drilling the course of working, and on the one hand, the clearance piece operative employee of being convenient for observes the drilling progress, and on the one hand, collects the metal in the piece and retrieves and recycle.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

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

FIG. 2 is a schematic view of the structure of the drill bit and the chamfer member according to the present invention;

FIG. 3 is a cross-sectional view of a drill bit and chamfer member of the present invention;

FIG. 4 is a cross-sectional view of the chamfer member of the present invention;

FIG. 5 is a schematic view of the construction of a chip removing member according to the utility model;

FIG. 6 is a schematic structural diagram of a first embodiment of the present invention;

fig. 7 is a schematic position view of a filter plate a in the first embodiment of the utility model;

fig. 8 is a cross-sectional view of a second embodiment of the present invention.

Reference numerals:

10. a drill bit; 11. a drill stem; 12. a feed port; 20. a chamfering member; 21. a chamfering cutter a; 22. a chamfering cutter b; 23. a sleeve; 24. a slide bar; 25. a spring a; 26. a damping head; 27. a spring b; 30. a chip-removing member; 31. a collar; 32. a housing; 33. a joint; 34. an air tube; 35. a suction machine; 36. a filter plate a; 37. a scrap storage box; 38. an air inlet pipe; 39. an air outlet pipe; 391. and (b) a filter plate.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood 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.

As shown in fig. 1-2, the drill bit for the multilayer PCB comprises a drill rod 11 vertically mounted on a mechanical arm, and a chip removing member 30 mounted on the side of a drilling machine, wherein the drill bit 10 is coaxially arranged at the bottom end of the drill rod 11.

The inside cavity of drilling rod 11, the outer disc of drilling rod 11 is provided with through-hole 12, and through-hole 12 is provided with two sets ofly and respectively for the feed port that is close to drill bit 10 and the discharge opening that is close to the drilling rod 11 top, and antidandruff component 30 is used for passing through feed port and discharge opening when the piece that drilling rod 11 produced through drill bit 10 drilling and discharges the piece suction, and is preferred, and feed port and discharge opening all are provided with a plurality of along the circumferencial direction array of drilling rod 11.

The drill rod 11 is also provided with a chamfering member 20, the chamfering member 20 serving to round the drilling hole opening created by the operation of the drill bit 10.

As shown in fig. 3-4, the chamfering member 20 is provided with two sets of upper chamfering members and lower chamfering members located below the upper chamfering members, respectively, the two sets of chamfering members being symmetrically arranged and each including a chamfering assembly.

The excircle surface of drilling rod 11 has seted up the mounting hole, and the mounting hole is provided with two and is located the same diameter of drilling rod 11.

The chamfering assembly comprises chamfering tools which are positioned in the mounting holes, one end of each chamfering tool is positioned inside the drill rod 11, the end is a connecting end, the other end of each chamfering tool is positioned outside the drill rod 11, each chamfering tool is of a triangular prism structure, the bottom edge of each chamfering tool is an inclined arrangement of cutting edges, and the distance between the cutting edges of the chamfering tools of the two chamfering assemblies is gradually reduced along the radial direction of the drill rod 11 and in the direction of pointing to the outer circular surface by the circle center of the drill rod 11.

The chamfer cutter has seted up the damping hole along the side of drilling rod 11 circumferencial direction and when the chamfer cutter withdraws in the drilling rod 11, the damping hole is located the mounting hole, is provided with damping piece in the damping hole, and is concrete, and the damping piece includes two damping heads 26, the spring b27 of setting between two damping heads 26 that slide respectively and set up in the two orifices departments of damping hole.

The chamfer cutter in every group chamfer subassembly corresponds the mounting hole and is provided with two sets ofly: the chamfering tool a21 and the chamfering tool b22 are slidably connected through a sliding piece, the chamfering tool a21 and the chamfering tool b22 are slidably connected through a sliding piece, specifically, a sleeve 23 is arranged at the connecting end of the chamfering tool a21, a sliding rod 24 is arranged at the connecting end of the chamfering tool b22, the extending directions of the sleeve 23 and the sliding rod 24 are both parallel to the distance direction between the chamfering tool a21 and the chamfering tool b22, the free end of the sliding rod 24 is slidably located in the sleeve 23, a spring a25 located between the chamfering tool a21 and the chamfering tool b22 is sleeved outside the sleeve 23, and the sleeve 23, the sliding rod 24 and the spring a25 form the sliding piece.

In order to accelerate the drilling progress of the circuit boards, a plurality of circuit boards can be distributed in the vertical direction in an array mode, the circuit boards are drilled at one time, and the drilling process is as follows:

the mechanical arm drives the drill rod 11 and the drill bit 10 to rotate downwards at a high speed to drill a circuit board, in the process, a lower corner member arranged on the drill rod 11 can round an upper orifice of a drill hole, in the round chamfering process, because the cutting edge of the chamfering tool is arranged obliquely, the chamfering tool can gradually move towards the inside of the drill rod 11, when the chamfering tool is completely positioned in the drill rod 11, the damping head 26 is in contact with the hole wall of the mounting hole, the subsequent chamfering member 20 descends along with the drill rod 11 in the drill hole, and after the chamfering member 10 is separated from the drill hole, the spring a25 overcomes the resistance between the damping head 26 and the hole wall of the mounting hole, so that the cutting edge of the chamfering tool extends out of the drill rod 11 to round an upper orifice of the next drill hole;

after all circuit boards are drilled, the mechanical arm drives the drill rod 11 and the drill bit 10 to be separated from the circuit boards upwards, and in the process, the upper chamfering component can perform chamfering on the lower orifice of the drilled hole.

As shown in fig. 5-6, the chip-removing member 30 comprises a collar 31 coaxially fixed on the outside of the drill rod 11, the collar 31 is provided with two in the vertical direction and the discharge hole is located between the two collars 31.

The outer part of the lantern ring 31 is coaxially and movably sleeved with a casing 32, a sealing fit is formed between the casing 32 and the casing, and a connector 33 is arranged on the outer part of the casing 32.

The chip-removing member 30 further comprises a suction machine 35, and an air pipe 34 is detachably mounted between the suction machine 35 and the joint 33.

First embodiment

As shown in fig. 7, the housing 32 is detachably formed of two sets of semicircular shells, and the chip removing member 30 further includes a filter sheet a36 provided in the joint 33.

The suction machine 35 is operated so that the chips located in the vicinity of the inlet port pass through the inlet port, the interior of the drill rod 11, the outlet port in order into the casing 32 and are retained in the casing 32 by the obstruction of the filter sheet a36, and after a while, the casing 32 is disassembled to take away the chips therein and the casing 32 is reassembled.

Second embodiment

As shown in fig. 8, a chip storage component is arranged between the air pipe 34 and the suction machine 35, the chip storage component includes a chip storage tank 37, an air inlet pipe 38 is connected to the upper end surface of the chip storage tank 37, an air outlet pipe 39 is connected to the lower end surface of the chip storage tank 37, a filter plate b391 is arranged at the connection position of the air outlet pipe 39 and the chip storage tank 37, and the air inlet pipe 38 is connected and communicated with the air pipe 34.

The suction machine 35 operates to enable the chips near the feeding hole to sequentially pass through the feeding hole, the interior of the drill rod 11, the discharging hole, the inner cavity of the casing 32, the joint 33, the air pipe 34 and the air inlet pipe 38 to enter the chip storage box 37, the chips are retained in the chip storage box 37 due to the obstruction of the filter plate b391, after the chip storage box is used for a long time, the box cover of the chip storage box 37 is opened to take the chips away, and then the box cover is assembled on the chip storage box 37 again.

The working principle of the utility model is as follows:

after all circuit boards are drilled, the mechanical arm drives the drill rod 11 and the drill bit 10 to be separated from the circuit boards upwards, and in the process, the upper chamfering component can perform chamfering on lower orifices of the drilled holes;

during the drilling and rounding process, the suction machine 35 operates to suck the chips into the casing 32 or into the chip storage tank 37 through the cooperation of the feed hole, the interior of the drill rod 11 and the discharge hole.

In the embodiments provided by the present invention, it should be understood that the disclosed apparatus, device and method can be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is only one logical functional division, and there may be other divisions when the actual implementation is performed; the modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the method of the embodiment.

It will also be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof.

The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims shall not be construed as limiting the claim concerned.

Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. A plurality of units or means recited in the system claims may also be implemented by one unit or means in software or hardware. The terms second, etc. are used to denote self-contained vehicular sound collection devices and do not denote any particular order.

Finally, it should be noted that the above examples are only intended to illustrate the technical process of the present invention and not to limit the same, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical process of the present invention without departing from the spirit and scope of the technical process of the present invention.

Claims

1. The utility model provides a drill bit for multilayer PCB circuit board, its includes vertical drilling rod (11) of installing on the arm, installs antidandruff component (30) at the drilling machine lateral part, and the bottom of drilling rod (11) is coaxial to be provided with drill bit (10), a serial communication port, the inside cavity of drilling rod (11), the excircle face of drilling rod (11) is provided with through-hole (12), through-hole (12) are provided with two sets ofly and respectively for the feed port that is close to drill bit (10) and the discharge opening that is close to drilling rod (11) top, antidandruff component (30) are used for sucking the piece through feed port and discharge opening when drilling rod (11) process the piece that drill bit (10) drilling produced and discharge, still be provided with chamfer component (20) on drilling rod (11), chamfer component (20) are used for carrying out the radius angle to the drilling drill hole mouth that drill bit (10) work produced.

2. The drill bit for the multilayer PCB circuit board as recited in claim 1, wherein a plurality of the feeding holes and the discharging holes are arranged in an array along the circumferential direction of the drill rod (11).

3. The drill bit for the multilayer PCB circuit board as recited in claim 1, wherein the chamfering member (20) is provided with two sets of upper chamfering members and lower chamfering members respectively located below the upper chamfering members, the two sets of chamfering members are arranged symmetrically and each comprise a chamfering assembly.

4. The drill bit for the multilayer PCB circuit board as claimed in claim 3, wherein the outer circumferential surface of the drill rod (11) is provided with two mounting holes which are arranged on the same diameter of the drill rod (11);

the chamfering assembly comprises chamfering tools positioned in the mounting holes, one end of each chamfering tool is positioned in the drill rod (11) and is a connecting end, the other end of each chamfering tool is positioned outside the drill rod (11), each chamfering tool is of a triangular prism structure, the bottom edges of the chamfering tools are cutting edges, the cutting edges are arranged in an inclined mode, and the distance between the cutting edges of the chamfering tools of the two chamfering assemblies is gradually reduced along the radial direction of the drill rod (11) and in the direction that the circle center of the drill rod (11) points to the outer circular surface;

the side face of the chamfering tool along the circumferential direction of the drill rod (11) is provided with a damping hole, when the chamfering tool retracts into the drill rod (11), the damping hole is positioned in the mounting hole, and a damping piece is arranged in the damping hole;

the chamfering tool in each group of chamfering assemblies is provided with two groups corresponding to the mounting holes and is a chamfering tool a (21) and a chamfering tool b (22), and the chamfering tool a (21) and the chamfering tool b (22) are in sliding connection through a sliding part.

5. The drill bit for the multilayer PCB of claim 4, wherein the damping member comprises two damping heads (26) respectively slidably arranged at two orifices of the damping hole, and a spring b (27) arranged between the two damping heads (26).

6. The drill bit for the multilayer PCB circuit board according to claim 4, wherein the sliding part comprises a sleeve (23) arranged at the connecting end of the chamfer cutter a (21) and a sliding rod (24) arranged at the connecting end of the chamfer cutter b (22), the extending directions of the sleeve (23) and the sliding rod (24) are both parallel to the distance direction between the chamfer cutter a (21) and the chamfer cutter b (22), the free end of the sliding rod (24) is slidably positioned in the sleeve (23), and the outer sleeve of the sleeve (23) is provided with a spring a (25) positioned between the chamfer cutter a (21) and the chamfer cutter b (22).

7. The drill bit for the multilayer PCB circuit board according to claim 1, wherein the chip removing member (30) comprises a collar (31) coaxially and fixedly sleeved on the outside of the drill rod (11), the collar (31) is provided with two in the vertical direction, the discharge hole is positioned between the two collars (31), the outside of the collar (31) is coaxially and movably sleeved with a casing (32) and forms a sealing fit with the casing, and the outside of the casing (32) is provided with a connector (33);

the scrap removing component (30) further comprises a suction machine (35), and an air pipe (34) is detachably arranged between the suction machine (35) and the joint (33).

8. Drill bit for multilayer PCB circuit board according to claim 7, characterized in that said housing (32) is composed of two sets of semi-circular removable shells, and the chip removing member (30) further comprises a filter plate a (36) arranged inside the joint (33).

9. The drill bit for the multilayer PCB circuit board according to claim 7, wherein a scrap storage part is arranged between the air pipe (34) and the suction machine (35), the scrap storage part comprises a scrap storage box (37), an air inlet pipe (38) is connected to the upper end surface of the scrap storage box (37), an air outlet pipe (39) is connected to the lower end surface of the scrap storage box (37), a filter plate b (391) is arranged at the joint of the air outlet pipe (39) and the scrap storage box (37), and the air inlet pipe (38) is communicated with the air pipe (34).