CN117222117A

CN117222117A - PCB drilling process and equipment

Info

Publication number: CN117222117A
Application number: CN202311358505.0A
Authority: CN
Inventors: 朱浩然
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-10-19
Filing date: 2023-10-19
Publication date: 2023-12-12

Abstract

The application provides a PCB drilling process and equipment, comprising the following steps: s1: selecting a special drilling machine suitable for drilling a PCB; s2: selecting a proper drill bit according to the design requirement of the PCB, wherein the diameter of the drill bit is determined according to the required drilling size; s3: setting drilling parameters of a drilling machine, including drilling speed and drilling depth; s4: sequentially overlapping and aligning the base plate, the PCB and the cover plate on a workbench of a drilling machine, and fixing the upper and lower surfaces and the side parts of the plate through special fixtures; s5: drilling by using a drilling machine according to preset drilling positions and parameters; s6: after the drilling processing is finished, the quality inspection of the drilling is carried out, and whether the diameter and the depth of the drilling meet the requirements is checked. According to the PCB drilling process, when the PCB is fixed before being drilled, the upper surface, the lower surface and the side parts of the plate are fixed through the special fixture, so that a mode of manually sticking adhesive tapes is avoided, the working efficiency is improved, and the adverse effect of manual operation on the drilling quality of the PCB is reduced.

Description

PCB drilling process and equipment

Technical Field

The application relates to the field of PCB drilling, in particular to a PCB drilling process and equipment.

Background

PCB is printed circuit board promptly, is important electronic component, in order to satisfy the installation of device, and the PCB board needs to process device mounting hole through drilling equipment, because the PCB board is more fragile, tensile strength is low, easily appears splitting the seam poor when directly drilling, places the PCB board between backing plate and apron in the prior art and drills, and wherein the apron is mostly aluminum plate. The cover plate has five main effects: (1) the surface of the plate (copper foil surface of the protection copper-clad plate or copper-clad conductive layer of the substrate) is protected, so that the plate surface is prevented from being damaged by pressure feet; (2) the drill bit is fixed, so that the swing amplitude and the deviation of the drill bit during drilling are reduced, and the drill bit can be accurately positioned; hole position accuracy is improved, and the drill bit is prevented from being broken; (3) preventing burrs and burrs on the substrate; reducing ingress burs; (4) the drill point is assisted to radiate heat and the temperature of the drill point is reduced; (5) assisting in cleaning the grooves of the drilling needle; prevent greasy dirt holes; and the abrasion and breaking of the drill bit are reduced.

At present, when installing PCB board and apron on drilling equipment among the prior art, the apron is mostly artifical to paste through the sticky tape in the form and is fixed on drilling mesa, leads to whole PCB board drilling process longer in time, and efficiency is lower, and because manual operation exists instability, the fixed quality of apron is difficult to ensure, then can influence the quality of PCB board drilling when the apron is not hard up.

For example: the application discloses a positioning and perforating mechanism for a PCB and a processing technology thereof in China patent application number CN202210257526.2, and the specification thereof discloses: the drilling of the PCB is to drill the required via holes on the copper-clad plate, and the via holes mainly provide the functions of electric connection and fixing or positioning for devices. In the drilling process, after each basic action is finished, a base plate, a PCB (printed Circuit Board), an aluminum plate and an adhesive tape are put on a machine table, and then drilling is started, when a base plate is fixed, an operator needs to carefully check the fixed state and the width of the adhesive tape through eyes, if the adhesive tape is too wide, the drill bit is easy to break, the error rate is high, and time and labor are wasted; the above patent can be used to demonstrate the drawbacks of the prior art.

Therefore, we make improvements to this and propose a PCB drilling process and apparatus.

Disclosure of Invention

The application aims at: when installing PCB board and apron on drilling equipment among the prior art to present, the apron is mostly artifical to paste through the sticky tape in the form and fixes on drilling mesa, leads to whole PCB board drilling process longer in time, and efficiency is lower, and because manual operation is unstable, the fixed quality of apron is difficult to ensure, then can influence the quality of PCB board drilling when the apron is not hard up.

In order to achieve the above object, the present application provides a PCB drilling process and apparatus for improving the above problems.

The application is specifically as follows:

a PCB drilling process comprising the steps of:

s1: selecting a special drilling machine suitable for drilling a PCB;

s2: selecting a proper drill bit according to the design requirement of the PCB, wherein the diameter of the drill bit is determined according to the required drilling size;

s3: setting drilling parameters of a drilling machine, including drilling speed and drilling depth;

s4: sequentially overlapping and aligning the base plate, the PCB and the cover plate on a workbench of a drilling machine, and fixing the upper and lower surfaces and the side parts of the plate through special fixtures;

s5: drilling by using a drilling machine according to preset drilling positions and parameters;

s6: after drilling processing is completed, carrying out quality inspection of drilling, and checking whether the diameter and depth of the drilling meet the requirements;

s7: cleaning the borehole, ensuring that no residue enters the borehole;

s8: optionally, a corrosion protection treatment is performed to protect the borehole from corrosion.

As a preferable technical scheme of the application, the special drilling machine is a numerical control drilling machine;

wherein the drill bit is a tungsten steel drill bit;

wherein the drilling parameters comprise drilling speed and drilling depth, and are set according to the design requirements of the PCB.

As a preferable technical scheme of the application, the positioning of the plate ensures that the drilling position is accurate, and the areas of the backing plate, the PCB and the cover plate are consistent.

As the preferable technical scheme of the application, after drilling the PCB board each time, when the base plate does not have drilling, the base plate is continuously used, and when the base plate has drilling, a new base plate needs to be replaced.

The utility model provides a PCB drilling equipment, includes the numerical control drilling machine, install the portal frame on the numerical control drilling machine, install X axle slide rail unit on the portal frame, install the locating plate on the X axle slide rail unit, install the rig through Z axle slide rail unit on the locating plate, install Y axle slide rail unit on the workstation of the numerical control drilling machine, install the drilling platform on the Y axle slide rail unit, the cutter module is installed to the outer end of drilling platform, the manipulator module for changing the cutter is installed to the lateral part of rig, wherein, set up flutedly on the drilling platform, this recess and the PCB board looks adaptation of waiting to process.

As the preferable technical scheme of the application, the drilling platform is internally provided with the installation cavity, a group of pressing clamps which are in one-to-one correspondence with the sides of the grooves are uniformly arranged in the installation cavity in an annular shape, each pressing clamp comprises a rotating shaft, two ends of each rotating shaft are symmetrically provided with a group of pressing blocks, the bottom ends of the pressing blocks are fixed on the rotating shaft, the tops of the pressing blocks are bent towards the grooves and the bent parts are parallel to the surfaces of the grooves, the tops of the drilling platform are provided with first notches for the tops of the pressing blocks to penetrate through, and the rotating shaft is driven to rotate through a driving assembly arranged in the installation cavity so as to drive the pressing blocks to press and fix the outer edges of the cover plates.

As the preferable technical scheme of the application, the driving assembly comprises a power shaft arranged in the middle of the installation cavity, the power shaft is driven to rotate by a driving piece arranged at the bottom end of the drilling platform, a driving seat is arranged in the middle of the installation cavity, a driving disc parallel to the driving seat is arranged on the power shaft, a piston cavity is arranged in the driving seat, a first piston block is arranged at the top end of the piston cavity, the outer end of the driving seat is communicated with a piston cylinder corresponding to the rotating shaft through a pipe fitting, a first piston rod is arranged on the piston cylinder, the end part of the first piston rod is connected with the rotating shaft through a connecting assembly, and when the driving disc rotates, the first piston block is driven to move downwards, and then the rotating shaft is driven to rotate through the connecting assembly.

As a preferable technical scheme of the application, the connecting component comprises a sleeve arranged in the middle of the rotating shaft, a spiral convex edge is arranged on the inner side of the sleeve, a spiral groove matched with the spiral convex edge is formed in the middle of the rotating shaft, a connecting block fixed with the end of the first piston rod is arranged on the sleeve, first springs are further arranged between two ends of the sleeve and the pressing blocks respectively, and a plurality of second springs are arranged between the bottom end of the first piston block and the piston cavity.

As the preferable technical scheme of the application, a group of clamping fixtures corresponding to the side edges of the grooves one by one are also annularly and uniformly arranged in the mounting cavity, the clamping fixtures comprise a group of clamping blocks which are arranged on the driving disc in a sliding manner, the top of the drilling platform is provided with a second notch for the clamping blocks to pass through, the top of the clamping blocks is vertical, the clamping blocks slide along the inner wall of the second notch, the bottom end of the clamping blocks is provided with a convex block, the driving disc is provided with an arc-shaped notch, and the convex block is positioned at the end part of the arc-shaped notch.

As the preferable technical scheme of the application, a group of adsorption clamps are installed on the drilling platform along the groove at equal intervals in an annular shape, the adsorption clamps comprise adsorption cylinders, the drilling platform is provided with an installation notch for installing the adsorption cylinders in the groove, the top end of the adsorption cylinders is provided with a plurality of adsorption holes, the adsorption cylinders are internally provided with second piston blocks, the bottom ends of the second piston blocks are provided with second piston rods, the bottom ends of the second piston rods extend out of the adsorption cylinders and are provided with convex columns, the rotating shafts are fixedly provided with rocking bars, the end parts of the rocking bars are provided with linear notches, and the convex columns are positioned in the linear notches.

Compared with the prior art, the application has the beneficial effects that:

in the scheme of the application:

1. in order to solve the problems that in the prior art, the cover plate is stuck and fixed on the drilling table surface in a manual mode through an adhesive tape, so that the whole PCB drilling process is longer in time and lower in efficiency;

2. according to the application, through the drilling platform, the groove matched with the PCB to be processed is formed on the drilling platform, the groove is used for positioning the PCB, and the stable positioning of the backing plate, the PCB and the cover plate can be completed by matching with the use of the pressing clamp, the clamping clamp and the adsorption clamp, so that the step of driving pins between the backing plate and the PCB can be omitted, and the working efficiency is improved;

3. according to the application, through the arranged pressing clamp, the pressing clamp comprises the rotating shaft and the pressing block rotating along the rotating shaft, the pressing block can press and fix the edge of the cover plate, the mode of manually sticking the adhesive tape in the prior art is solved, and the processing efficiency is improved;

4. according to the application, through the clamping fixture, the clamping blocks are driven to move towards the grooves by the rotation of the driving disc in the process of driving the pressing fixture to work, so that the side parts of the base plate, the PCB and the cover plate can be fixed, the stability of the base plate, the PCB and the cover plate in processing is further improved, and the drilling quality is improved;

5. according to the application, through the arranged adsorption clamp, in the process of pressing and fixing the side parts of the base plate, the PCB and the cover plate by the adsorption clamp, the second piston block moves downwards, and suction force for the base plate is generated at the adsorption hole, so that an effect of independently fixing the base plate is achieved, and the stability of the whole drilling process of the base plate, the PCB and the cover plate is further enhanced.

Drawings

Fig. 1 is a schematic diagram of a PCB drilling process according to the present application;

fig. 2 is a front view of a PCB drilling apparatus provided by the present application;

fig. 3 is a top view of a PCB drilling apparatus provided by the present application;

fig. 4 is a state diagram of a drilling table of a PCB drilling apparatus according to the present application in operation;

fig. 5 is a state diagram of a drilling platform of a PCB drilling apparatus provided by the present application when not in operation;

fig. 6 is a schematic structural diagram of the inside of a drilling platform of a PCB drilling apparatus according to the present application;

fig. 7 is a schematic structural diagram of a rotary shaft of a PCB drilling apparatus according to the present application;

fig. 8 is a schematic structural diagram of a driving seat and a driving disc of a PCB drilling apparatus according to the present application.

Fig. 9 is a schematic structural view of a driving disc of a PCB drilling apparatus according to the present application;

fig. 10 is a schematic structural view of a rotating shaft of a PCB drilling apparatus according to the present application;

fig. 11 is a schematic structural diagram of an adsorption fixture of a PCB drilling apparatus according to the present application.

The figures indicate:

1. a numerical control drilling machine; 101. a portal frame; 102. an X-axis sliding rail unit; 103. a positioning plate; 104. a Z-axis sliding rail unit; 105. a drilling machine; 106. a Y-axis slide rail unit; 107. a drilling station; 108. a cutter module; 109. a manipulator module; 110. a groove; 111. a mounting cavity; 2. pressing a clamp; 201. a rotating shaft; 202. pressing the block; 203. a first notch; 3. a drive assembly; 301. a power shaft; 302. a driving member; 303. a driving seat; 304. a drive plate; 305. a piston chamber; 306. a first piston block; 307. a pipe fitting; 308. a piston cylinder; 309. a first piston rod; 310. a sleeve; 311. spiral rib; 312. a spiral groove; 313. a first spring; 314. a second spring; 4. clamping a clamp; 401. a clamping block; 402. a second notch; 403. a bump; 404. an arc-shaped notch; 5. an adsorption clamp; 501. an adsorption cylinder; 502. a mounting notch; 503. adsorption holes; 504. a second piston block; 505. a second piston rod; 506. a convex column; 507. swinging the rod; 508. linear notch.

Detailed Description

In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.

As described in the background art, when the PCB and the cover plate are installed on the drilling device in the prior art, the cover plate is mostly stuck and fixed on the drilling table surface in a mode of manually passing through the adhesive tape, so that the whole PCB drilling process is longer in time and lower in efficiency, and the quality of the cover plate fixing is difficult to guarantee due to instability of manual operation, and the quality of the PCB drilling can be affected when the cover plate is loose.

In order to solve the technical problem, the application provides a PCB drilling process and equipment, which are applied to PCB drilling processing.

Specifically, referring to fig. 1, a PCB drilling process includes the following steps:

s1: selecting a special drilling machine suitable for drilling a PCB;

s7: cleaning the borehole, ensuring that no residue enters the borehole;

Wherein the special drilling machine is a numerical control drilling machine 1;

wherein the drill bit is a tungsten steel drill bit;

the drilling parameters comprise drilling speed and drilling depth, and are set according to the design requirements of the PCB.

The positioning of the plates ensures that the drilling position is accurate, and the areas of the base plate, the PCB and the cover plate are consistent.

After drilling the PCB board each time, when the base plate does not have holes, the base plate is continuously used, and when the base plate has holes, a new base plate needs to be replaced.

The PCB drilling process provided by the application aims to solve the problems that in the prior art, the cover plate is stuck and fixed on the surface of the drilling platform 107 in a mode of manually sticking an adhesive tape, so that the whole PCB drilling process is longer in time and lower in efficiency, and when the PCB is fixed before drilling, the upper surface, the lower surface and the side parts of the plate are fixed by the special fixture, so that the mode of manually sticking the adhesive tape is avoided, the working efficiency is improved, and the adverse effect of manual operation on the drilling quality of the PCB is reduced.

In order to make the person skilled in the art better understand the solution of the present application, the technical solution of the embodiment of the present application will be clearly and completely described below with reference to the accompanying drawings.

It should be noted that, under the condition of no conflict, the embodiments of the present application and the features and technical solutions in the embodiments may be combined with each other.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

Example 1

Referring to fig. 2-3, a PCB drilling device specifically includes a numerically controlled drilling machine 1, a gantry 101 is installed on the numerically controlled drilling machine 1, an X-axis sliding rail unit 102 is installed on the gantry 101, a positioning plate 103 is installed on the X-axis sliding rail unit 102, a drilling machine 105 is installed on the positioning plate 103 through a Z-axis sliding rail unit 104, a Y-axis sliding rail unit 106 is installed on a workbench of the numerically controlled drilling machine 1, a drilling platform 107 is installed on the Y-axis sliding rail unit 106, a cutter module 108 is installed at an outer end of the drilling platform 107, a manipulator module 109 for replacing a cutter is installed on a side portion of the drilling machine 105, a groove 110 is formed in the drilling platform 107, the groove 110 is matched with a PCB to be processed, the numerically controlled drilling machine 1 is connected with an external numerically controlled operation system, and the drilling of the devices such as the X-axis sliding rail unit 102, the Y-axis sliding rail unit 106, the Z-axis sliding rail unit 104, and the drilling machine 105 are controlled through setting corresponding drilling parameters.

Referring to fig. 3-5, a PCB drilling device is disclosed, a mounting cavity 111 is provided in a drilling platform 107, a set of pressing clamps 2 corresponding to sides of a groove 110 are uniformly provided in the mounting cavity 111 in an annular shape, that is, each set of pressing clamps 2 is configured to press down and fix one side of a pad on a PCB board, the pressing clamps 2 include a rotating shaft 201, two ends on the rotating shaft 201 are symmetrically provided with a set of pressing blocks 202, bottom ends of the pressing blocks 202 are fixed on the rotating shaft 201, a portion of the top of the pressing blocks 202 bent and folded towards the groove 110 is parallel to a surface of the groove 110, a first notch 203 for allowing the top of the pressing blocks 202 to pass through is provided at the top of the drilling platform 107, the rotating shaft 201 drives rotation through a driving component 3 provided in the mounting cavity 111, and further drives the pressing blocks 202 to press down and fix the outer edge of the cover board.

Referring to fig. 6-10, the driving assembly 3 includes a power shaft 301 installed in the middle of the installation cavity 111, the power shaft 301 is driven to rotate by a driving member 302 installed at the bottom end of the drilling platform 107, a driving seat 303 is installed in the middle of the installation cavity 111, a driving disc 304 parallel to the driving seat 303 is installed on the power shaft 301, a piston cavity 305 is provided in the driving seat 303, a first piston block 306 is installed at the top end of the piston cavity 305, specifically, as shown in fig. 8 and 9, a channel for the power shaft 301 to pass through is reserved in the middle of the driving seat 303, a protrusion with a bottom end being an inclined plane is provided at the bottom end of the driving disc 304, the top end of the first piston block 306 is adapted to the driving disc 304, that is, when the driving disc 304 rotates, the first piston block 306 is extruded to move downwards by the inclined plane, a piston cylinder 308 corresponding to the rotating shaft 201 is connected to the outer end of the driving seat 303 by a pipe 307, a first piston rod 309 is installed on the piston cylinder 308, and the end of the first piston rod 309 is connected with the rotating shaft 201 by a connecting assembly, and when the driving disc 304 rotates, the first piston block 306 is driven to move downwards by the connecting assembly 201.

Specifically, referring to fig. 10, the connection assembly includes a sleeve 310 disposed in the middle of the rotating shaft 201, a spiral rib 311 is disposed on the inner side of the sleeve 310, a spiral groove 312 adapted to the spiral rib 311 is disposed in the middle of the rotating shaft 201, a connection block fixed to an end of the first piston rod 309 is disposed on the sleeve 310, a first spring 313 is disposed between two ends of the sleeve 310 and the pressing block 202, and a plurality of second springs 314 are disposed between the bottom end of the first piston block 306 and the piston cavity 305.

When the first piston block 306 moves down, the medium in the piston cavity 305 is extruded, and then the first piston rod 309 moves out to push the sleeve 310 to perform linear motion, and then the rotating shaft 201 performs rotational motion by the limitation of the spiral rib 311 and the spiral groove 312, so as to drive the pressing block 202 to rotate and then press and fix the cover plate on the PCB.

Example 2

Considering that only the backing plate, the PCB and the cover plate are fixed by pressing in the vertical direction, the backing plate, the PCB and the cover plate can move in the horizontal direction, and the quality of drilling is adversely affected, the PCB drilling equipment provided by the embodiment 1 is further optimized;

referring to fig. 4-10, a set of clamping fixtures 4 corresponding to the sides of the groove 110 are uniformly and annularly arranged in the mounting cavity 111, the clamping fixtures 4 comprise a set of second notches 402 which are slidably arranged on the driving disc 304 and are used for allowing the clamping blocks 401 to pass through, the tops of the clamping blocks 401 are vertical, the clamping blocks 401 slide along the inner walls of the second notches 402, the bottom ends of the clamping blocks 401 are provided with projections 403, the driving disc 304 is provided with arc-shaped notches 404, the projections 403 are positioned at the end parts of the arc-shaped notches 404, the second notches 402 conduct linear guiding on the clamping blocks 401, namely, in the process of turning the driving disc 304, the arc-shaped notches 404 push the clamping blocks 401 to move along the second notches 402, namely, move towards the cover plate, the PCB board and the backing plate and are abutted to the side parts of the cover plate, and the backing plate, and the plurality of clamping blocks 401 are matched with each other, the cover plate, the PCB board and the backing plate can be limited in the horizontal direction, and further drilling quality of the board can be guaranteed, meanwhile, the steps of driving the PCB pin and the work efficiency between the PCB board and the backing plate can be omitted through the matching of the structures.

When it should be noted that, in this solution, the arc slot 404 is composed of an arc slot concentric with the driving disc 304 and a chute smoothly connected with the end of the arc slot, when the bump 403 is in the arc slot, the driving disc 304 rotates, the clamping block 401 does not move, this process is used for the driving disc 304 to squeeze the first piston block 306 to move downwards, when the driving disc 304 continues to rotate so that the bump 403 starts to enter the chute, and then drives the clamping block 401 to move to perform clamping work, in this solution, the contact between the clamping block 401 and the backing plate, the PCB and the cover plate is synchronous with the contact between the pressing block 202 and the cover plate, and when the driving disc 304 does a rotation work, the fixing of the pressing and the lateral clamping of the backing plate, the pressing and the lateral clamping of the PCB and the cover plate is completed, it can be understood that in this solution, the starting point of the bump 403 (the position of the bump 403 at the bottom of the clamping block 401) is set to be located in the chute, so as to play the effect of pressing the backing plate, the PCB and the cover plate.

Example 3

For further optimization of the PCB drilling apparatus provided in embodiment 1 or 2, specifically, please refer to fig. 4-11, a group of suction jigs 5 are installed on the drilling table 107 along the groove 110 at equal intervals in a ring shape, the suction jigs 5 include suction drums 501, an installation notch 502 for installing the suction drums 501 is provided on the drilling table 107 in the groove 110, a plurality of suction holes 503 are provided on the top end of the suction drums 501, a second piston block 504 is provided in the suction drums 501, a second piston rod 505 is provided at the bottom end of the second piston block 504, the bottom end of the second piston rod 505 extends out of the suction drums 501 and has a convex column 506, a rocking bar 507 is fixed on the rotating shaft 201, a linear notch 508 is provided at the end of the rocking bar 507, the convex column 506 is located in the linear notch 508, during the rotation of the rotating shaft 201, the rocking bar 507 rotates synchronously downward, and drives the second piston block 504 to move downward, thereby generating suction force to the pad at the suction holes 503, and further enhancing the stability of the pad, the PCB board and the whole drilling process.

The using process of the PCB drilling equipment provided by the application is as follows:

the backing plate and the cover plate are processed to be consistent with the size of the PCB, and the groove 110 is selected to be consistent with the size of the PCB;

the base plate, the PCB and the cover plate are sequentially placed in the groove 110, the power shaft 301 is controlled to rotate, the driving disc 304 rotates firstly, then the first piston block 306 is driven to move downwards, then the medium in the piston cavity 305 is extruded, the first piston rod 309 moves outwards to push the sleeve 310 to do linear motion, then the rotation of the rotating shaft 201 is limited by the spiral convex edge 311 and the spiral groove 312, the pressing block 202 is driven to rotate and then the cover plate on the PCB is pressed down and fixed, meanwhile, the arc-shaped notch 404 drives the clamping block 401 to move downwards to the cover plate under the guide of the second notch 402, the PCB and the base plate move and are abutted to the cover plate, the lateral parts of the PCB and the base plate are abutted, so that the fixing of the cover plate, the PCB and the base plate in the vertical direction and the horizontal direction is completed, the drilling quality is guaranteed, in the rotating process of the rotating shaft 201, the swinging rod 507 rotates downwards synchronously, then the second piston block 504 is driven to move downwards, the suction force to the base plate is generated at the suction hole 503, and the effect of independently fixing the base plate is further achieved, and the stability of the whole drilling process is further enhanced.

In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

It is apparent that the above-described embodiments are only some embodiments of the present application, but not all embodiments, and the preferred embodiments of the present application are shown in the drawings, which do not limit the scope of the patent claims. This application may be embodied in many different forms, but rather, embodiments are provided in order to provide a thorough and complete understanding of the present disclosure. Although the application has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing description, or equivalents may be substituted for elements thereof. All equivalent structures made by the content of the specification and the drawings of the application are directly or indirectly applied to other related technical fields, and are also within the scope of the application.

Claims

1. A PCB drilling process, comprising the steps of:

s1: selecting a special drilling machine suitable for drilling a PCB;

s7: cleaning the borehole, ensuring that no residue enters the borehole;

2. A PCB drilling process according to claim 1, wherein the dedicated drilling machine is a numerical control drilling machine (1);

wherein the drill bit is a tungsten steel drill bit;

3. The PCB drilling process of claim 1, wherein the positioning of the board ensures accurate drilling and the areas of the pad, PCB and cover are uniform.

4. A PCB drilling process according to claim 1, characterized in that after each drilling of the PCB board, the pad is continued to be used when no drilling has occurred, and a new pad is required to be replaced when drilling has occurred.

5. The utility model provides a PCB drilling equipment, is applied to the PCB drilling technology of claim 2, a serial communication port, install portal frame (101) on numerical control drilling machine (1), install X axle slide rail unit (102) on portal frame (101), install locating plate (103) on X axle slide rail unit (102), install rig (105) through Z axle slide rail unit (104) on locating plate (103), install Y axle slide rail unit (106) on the workstation of numerical control drilling machine (1), install drilling platform (107) on Y axle slide rail unit (106), cutter module (108) are installed to the outer end of drilling platform (107), manipulator module (109) that are used for changing the cutter are installed to the lateral part of rig (105), wherein, set up fluted (110) on drilling platform (107), this fluted (110) looks adaptation with the PCB board that waits to process.

6. The PCB drilling device according to claim 5, wherein the drilling table (107) is internally provided with a mounting cavity (111), a group of pressing clamps (2) corresponding to the sides of the grooves (110) one by one are uniformly arranged in the mounting cavity (111) in a ring shape, the pressing clamps (2) comprise rotating shafts (201), a group of pressing blocks (202) are symmetrically arranged at two ends of each rotating shaft (201), a first notch (203) for the top of each pressing block (202) to penetrate through is formed in the top of the drilling table (107), and the rotating shafts (201) are driven to rotate through driving components (3) arranged in the mounting cavity (111) so as to drive the pressing blocks (202) to press and fix the outer edges of the cover plates.

7. A PCB drilling apparatus according to claim 6, wherein the driving assembly (3) comprises a power shaft (301) installed in the middle of the installation cavity (111), the power shaft (301) is driven to rotate by a driving member (302) installed at the bottom end of the drilling platform (107), a driving seat (303) is installed in the middle of the installation cavity (111), a driving disc (304) parallel to the driving seat (303) is installed on the power shaft (301), a piston cavity (305) is formed in the driving seat (303), a first piston block (306) is installed at the top end of the piston cavity (305), a piston cylinder (308) corresponding to the rotating shaft (201) is communicated with the outer end of the driving seat (303) through a pipe fitting (307), a first piston rod (309) is installed on the piston cylinder (308), and when the driving disc (304) rotates, the first piston block (306) is driven to move downwards, and then the rotating shaft (201) is driven to rotate through the connecting assembly.

8. The PCB drilling device according to claim 7, wherein the connecting assembly comprises a sleeve (310) arranged in the middle of the rotating shaft (201), a spiral rib (311) is arranged on the inner side of the sleeve (310), a spiral groove (312) matched with the spiral rib (311) is formed in the middle of the rotating shaft (201), a connecting block fixed with the end of the first piston rod (309) is arranged on the sleeve (310), a first spring (313) is further arranged between two ends of the sleeve (310) and the pressing block (202), and a plurality of second springs (314) are arranged between the bottom end of the first piston block (306) and the piston cavity (305).

9. The PCB drilling device according to claim 7, wherein a group of clamping fixtures (4) corresponding to the sides of the grooves (110) are uniformly arranged in the mounting cavity (111) in an annular shape, the clamping fixtures (4) comprise a group of clamping blocks (401) which are arranged on the driving disc (304) in a sliding manner, a second notch (402) for the clamping blocks (401) to penetrate is formed in the top of the drilling platform (107), the clamping blocks (401) slide along the inner wall of the second notch (402), a lug (403) is arranged at the bottom end of the clamping blocks (401), an arc-shaped notch (404) is formed in the driving disc (304), and the lug (403) is located at the end of the arc-shaped notch (404).

10. A PCB drilling apparatus according to claim 9, characterized in that a set of suction jigs (5) are mounted on the drilling table (107) along the recess (110) at equal intervals in a ring shape for sucking a pad during the drilling of the PCB, the suction jigs (5) comprising a suction cylinder (501) communicating with the recess (110), the suction cylinder (501) having a second piston rod (505) moving synchronously with the rotation shaft (201).