CN114670276B - Processing device and method for outer end face seam allowance of high-speed printed circuit board - Google Patents

Abstract

The invention discloses a processing device and a method for a seam allowance on the outer end face of a high-speed printed circuit board, and relates to the technical field of processing the seam allowance on the outer end face of an electronic element assembly, wherein two horizontally arranged clamping oil cylinders are fixedly arranged on the top surface of a support, a positioning table is fixedly arranged between cylinder barrels of the two clamping oil cylinders, two positioning columns are fixedly arranged on the top surface of the positioning table, a vertical plate of an L plate is welded on an acting end of a piston rod of the clamping oil cylinder, a clamping block is welded on the top of the vertical plate, a servo motor is fixedly arranged on the acting end of the piston rod of each lifting oil cylinder, and an output shaft of the servo motor is connected with a drill bit extending into a through groove; a compression oil cylinder is fixedly arranged on a cross beam of the portal frame, and two linear milling mechanisms are arranged below the cross beam of the portal frame. The invention has the beneficial effects that: the production efficiency of the finished high-speed printed circuit board is greatly improved, the production quality of the finished high-speed printed circuit board is greatly improved, and the automation degree is high.

Description

Processing device and method for outer end face seam allowance of high-speed printed circuit board

Technical Field

The invention relates to the technical field of processing a seam allowance on an outer end face of an electronic element assembly, in particular to a processing device and a processing method for the seam allowance on the outer end face of a high-speed printed circuit board.

Background

Electronic component assemblies include single-sided circuit boards, double-sided circuit boards, flexible boards, multilayer printed circuit boards, and the like, which are core components of controllers and can play an important role. The circuit board is processed by a series of procedures such as etching, exposure, silk screen printing and the like. The high-speed printed circuit board has the technical characteristic of higher transmission frequency compared with a common circuit board, and the structure of the high-speed printed circuit board is shown in figure 1. Technologically, the seam allowance 26 is required to be processed on the left outer end face and the right outer end face of the high-speed printed circuit board, the bottom face of the seam allowance 26 is required to be a horizontal plane, and the horizontal plane is used as a chip mounting face, so that the chip is hidden, and the whole high-speed printed circuit board can be mounted in a narrower space; it is also required to process a plurality of through holes 27 on the bottom surface of the seam allowance 26, and the through holes 27 are used as heat dissipation holes or wire passing holes, as shown in fig. 2 to fig. 3, which are schematic structural diagrams of the finished high-speed printed circuit board.

The existing method for processing a finished high-speed printed circuit board by using a high-speed printed circuit board comprises the following steps: the workman passes through the clamp plate clamping mechanism earlier and fixes the high-speed printed circuit board who treats processing at the frock bench of milling machine, then operate the milling machine, make the milling cutter of milling machine carry out the feed along the width direction of high-speed printed circuit board, treat after milling cutter passes through the circuit board, can all process out tang 26 on two outer terminal surfaces of high-speed printed circuit board, the workman opens clamp plate clamping mechanism afterwards, in order to take off semi-manufactured goods high-speed printed circuit board from the frock bench, after taking off, fix semi-manufactured goods high-speed printed circuit board frock to the locating platform of drilling machine, the workman operates the drilling machine, so that the drill bit in the drilling machine drills out a plurality of through-holes 27 on the bottom surface of tang 26, thereby finally produce the product.

However, although the conventional processing method can process a product with a spigot, the technical staff can find the following technical defects after a batch of products are produced in batches:

I. the bottom surface of the spigot 26 of the product is not a horizontal plane, but an inclined plane 28, as shown in fig. 4-5, the structure of the actually processed product is schematically illustrated, so that the production quality of the product is greatly reduced, and the spigot 26 needs to be corrected subsequently, which undoubtedly increases the production process and further greatly reduces the production efficiency of the product.

II. In the process of processing tang 26, need fix a position the frock with high-speed printed circuit board earlier on the frock bench of milling machine, behind the processing tang 26, still need shift the location bench of drilling machine with high-speed printed circuit board on, and fix a position the frock with it, can produce positioning error undoubtedly through twice location frock, thereby very big reduction the position accuracy of through-hole 27, through-hole 27 is unsatisfactory in the position on tang 26 bottom surface promptly, thereby further reduced the production quality of product, there is the technical defect that the production precision is low.

III, after the seam allowance 26 is processed on the high-speed printed circuit board, the high-speed printed circuit board still needs to be transferred to a drilling station, and the high-speed printed circuit board needs to be clamped twice, so that the production period is increased undoubtedly, and the production efficiency of products is greatly reduced. Therefore, a processing device and a method for greatly improving the production efficiency and the production quality of the finished high-speed printed circuit board are needed.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides the processing device and the processing method for the outer end surface seam allowance of the high-speed printed circuit board, which have the advantages of compact structure, greatly improved production efficiency of the finished high-speed printed circuit board, greatly improved production quality of the finished high-speed printed circuit board and high automation degree.

The purpose of the invention is realized by the following technical scheme: a processing device for a seam allowance on the outer end face of a high-speed printed circuit board comprises a workbench, a support fixedly arranged on the workbench, and a portal frame fixedly arranged on the workbench, wherein the portal frame is erected outside the support, two horizontally arranged clamping oil cylinders are fixedly arranged on the top surface of the support, a positioning table is fixedly arranged between the cylinders of the two clamping oil cylinders, two positioning columns are fixedly arranged on the top surface of the positioning table, an L-shaped plate positioned on the outer side of the support is arranged on the action end of the piston rod of the two clamping oil cylinders, a vertical plate of the L-shaped plate is welded on the action end of the piston rod of the clamping oil cylinder, a clamping block is welded on the top of the vertical plate, an L-shaped opening arranged towards the positioning table is arranged at the upper end part of the clamping block, the bottom surface of the L-shaped opening is flush with the top surface of the positioning table, a plurality of through grooves are arranged on the bottom surface of the L-shaped opening and along the longitudinal direction of the L-shaped opening, a plurality of lifting oil cylinders respectively corresponding to the through grooves are fixedly arranged on the horizontal plate of the L-shaped plate, a servo motor is fixedly arranged at the action end of each lifting oil cylinder piston rod, and a drill bit extending into the through groove is connected to an output shaft of the servo motor;

the gantry type milling device is characterized in that a compression oil cylinder is fixedly arranged on a cross beam of the gantry, a piston rod of the compression oil cylinder penetrates through the cross beam and is provided with a pressing plate, the pressing plate is fixedly arranged on an extending end and is arranged right above the positioning table, two guide holes are formed in the pressing plate and are respectively arranged right above the two positioning columns, two linear milling mechanisms are arranged below the cross beam of the gantry and are respectively arranged right above the two clamping blocks, and a milling cutter of each linear milling mechanism is arranged on the rear side of each clamping block.

The clamping blocks positioned at the two sides of the positioning table are symmetrically arranged around the positioning table.

The outer diameter of the positioning column is equal to the diameter of the guide hole.

Two compression oil cylinders are fixedly arranged on a cross beam of the portal frame, and piston rods of the two compression oil cylinders are fixedly arranged on the top surface of the pressing plate.

The height of the vertical face of the L-shaped opening is smaller than the thickness of the high-speed printed circuit board.

And a plurality of supporting legs supported on the ground are fixedly arranged on the bottom surface of the workbench.

Two straight lines mill the bilateral symmetry setting of mechanism, and the straight line mills the mechanism and includes hydraulic sliding table, driving motor and milling cutter, the hydraulic sliding table vertically sets up and sets firmly on the basal surface of portal frame crossbeam, and driving motor vertically sets up, and driving motor's frame is fixed in on the mobile station of hydraulic sliding table through the flange, and milling cutter installs on driving motor's output shaft.

The processing device further comprises a controller, and the controller is electrically connected with the electromagnetic valve of the pressing oil cylinder, the electromagnetic valve of the lifting oil cylinder, the servo motor and the driving motor.

The processing method for the outer end face seam allowance of the high-speed printed circuit board comprises the following steps:

s1, a worker takes a plurality of high-speed printed circuit boards to be processed, then the high-speed printed circuit boards are orderly stacked, then two positioning holes are drilled in each layer of high-speed printed circuit board, the distance between the two positioning holes is equal to the distance between the two positioning columns, and the diameter of each positioning hole is equal to the outer diameter of each positioning column;

s2, positioning the high-speed printed circuit board, namely, a worker takes one high-speed printed circuit board, then the two positioning holes in the high-speed printed circuit board are respectively sleeved on the two positioning columns, and the high-speed printed circuit board is supported on the top surface of the positioning table, so that the positioning of the high-speed printed circuit board is realized, at the moment, the left and right extending ends of the high-speed printed circuit board are respectively supported on the bottom surfaces of the two clamping blocks, and the left and right end surfaces of the high-speed printed circuit board are respectively opposite to the vertical surfaces of the two clamping blocks;

s3, horizontally clamping the high-speed printed circuit board, controlling piston rods of the two clamping oil cylinders to retract by workers, driving the L board to move inwards by the piston rods, driving the lifting oil cylinder and the clamping blocks to move synchronously by the L board, and clamping the high-speed printed circuit board between vertical surfaces of the two clamping blocks after the piston rods of the two clamping oil cylinders are completely retracted, so that the horizontal clamping of the high-speed printed circuit board is realized;

s4, vertically clamping the high-speed printed circuit board, wherein a worker controls a piston rod of a compaction oil cylinder to extend downwards, the piston rod drives a pressing plate to move downwards, a positioning column firstly enters a guide hole, and then the pressing plate presses the top surface of the high-speed printed circuit board, so that the vertical clamping of the high-speed printed circuit board is realized;

s5, molding the semi-finished high-speed printed circuit board, wherein a worker controls a driving motor to start firstly, the driving motor drives a milling cutter to rotate, then the worker controls hydraulic sliding tables of two linear milling mechanisms to start simultaneously, the hydraulic sliding tables drive a moving table to move forwards, the moving table drives the driving motor and the milling cutter to move forwards synchronously, the milling cutter is rotated to gradually mill the material on the outer end face of the high-speed printed circuit board from back to front along the top surface of a clamping block, and after the milling cutter passes through the high-speed printed circuit board, a spigot is molded on the left outer end face and the right outer end face of the high-speed printed circuit board;

s6, forming the finished high-speed printed circuit board, wherein a worker controls each servo motor to start, the servo motors drive drill bits to rotate, then the worker controls piston rods of each lifting oil cylinder to extend upwards, the piston rods drive the servo motors to move upwards, and the drill bits penetrate through the through grooves and drill a plurality of required through holes in the bottom surface of the seam allowance, so that the finished high-speed printed circuit board is finally produced;

and S7, repeating the operations of the steps S2-S6, and continuously producing a plurality of finished high-speed printed circuit boards in batches.

The invention has the following advantages: the automatic feeding device has the advantages of compact structure, greatly improving the production efficiency of the finished high-speed printed circuit board, greatly improving the production quality of the finished high-speed printed circuit board and having high automation degree.

Drawings

FIG. 1 is a schematic diagram of a high speed printed circuit board;

FIG. 2 is a schematic structural diagram of a finished high-speed printed circuit board;

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a schematic structural diagram of an actually processed product;

FIG. 5 is an enlarged view of a portion I of FIG. 4;

FIG. 6 is a schematic structural view of the present invention;

FIG. 7 is a cross-sectional view A-A of FIG. 6;

FIG. 8 is a schematic structural diagram of a linear milling mechanism;

FIG. 9 is a bottom view of FIG. 8;

FIG. 10 is a schematic view of a milling cutter;

FIG. 11 is an enlarged view of a portion of portion II of FIG. 6;

FIG. 12 is a schematic view of the structure of the clamping block;

FIG. 13 is a top view of FIG. 12;

FIG. 14 is a schematic view of two positioning holes machined in a high speed printed circuit board;

FIG. 15 is a schematic view of the present invention positioning a high speed printed circuit board;

FIG. 16 is a cross-sectional view B-B of FIG. 15;

FIG. 17 is a schematic view of two clamping blocks clamping a high speed printed circuit board;

FIG. 18 is a cross-sectional view C-C of FIG. 17;

FIG. 19 is an enlarged partial view of portion III of FIG. 17;

FIG. 20 is a schematic view of a platen pressing a high speed printed circuit board;

FIG. 21 is a schematic view of a molded semi-finished high speed printed circuit board;

FIG. 22 is a schematic structural view of a processed semi-finished high-speed printed circuit board;

FIG. 23 is a schematic structural view of a finished high-speed printed circuit board;

FIG. 24 is a top view of FIG. 23;

in the figure, 1-workbench, 2-support, 3-gantry, 4-clamping oil cylinder, 5-positioning table, 6-positioning column, 7-L plate, 8-clamping block, 9-L-shaped opening, 10-bottom surface, 11-through groove, 12-lifting oil cylinder, 13-servo motor, 14-drill bit, 15-pressing oil cylinder, 16-pressing plate, 17-guide hole, 18-linear milling mechanism, 19-milling cutter, 20-vertical surface, 21-hydraulic sliding table, 22-driving motor, 23-moving table, 24-positioning hole, 25-high-speed printed circuit board, 26-spigot, 27-through hole and 28-inclined surface.

Detailed Description

The invention will be further described with reference to the accompanying drawings, without limiting the scope of the invention to the following:

as shown in fig. 6 to 13, the processing device for the seam allowance of the outer end face of the high-speed printed circuit board comprises a workbench 1, a support 2 fixedly arranged on the table-board of the workbench 1, and a portal frame 3 fixedly arranged on the table-board of the workbench 1, wherein a plurality of support legs supported on the ground are fixedly arranged on the bottom surface of the workbench 1, the portal frame 3 is erected outside the support 2, two horizontally arranged clamping cylinders 4 are fixedly arranged on the top surface of the support 2, a positioning table 5 is fixedly arranged between the cylinders of the two clamping cylinders 4, two positioning columns 6 are fixedly arranged on the top surface of the positioning table 5, an L plate 7 positioned outside the support 2 is arranged on the action end of the piston rod of the two clamping cylinders 4, the vertical plate of the L plate 7 is welded on the action end of the piston rod of the clamping cylinder 4, clamping blocks 8 are welded on the top of the vertical plate, the clamping blocks 8 positioned on the two sides of the positioning table 5 are symmetrically arranged with respect to the positioning table 5, the L shape opening 9 that sets up towards 5 directions of locating platform is seted up to 8 upper end portions of clamp splice, and a plurality of logical grooves 11 have been seted up on the bottom surface 10 of L shape opening 9 and the top surface parallel and level of locating platform 5 on the bottom surface 10 of L shape opening 9 and along its longitudinal direction, set firmly a plurality of respectively with lead to the corresponding lift cylinder 12 of groove 11 on the horizontal plate of L board 7, set firmly servo motor 13 on the effect end of each lift cylinder 12 piston rod, be connected with on servo motor 13's the output shaft and stretch into the drill bit 14 in leading to the inslot 11.

A compression oil cylinder 15 is fixedly arranged on a cross beam of the portal frame 3, a piston rod of the compression oil cylinder 15 penetrates through the cross beam, a pressure plate 16 is fixedly arranged on an extending end of the compression oil cylinder, the pressure plate 16 is arranged right above the positioning table 5, two guide holes 17 are formed in the pressure plate 16, the two guide holes 17 are respectively arranged right above the two positioning columns 6, the outer diameters of the positioning columns 6 are equal to the diameters of the guide holes 17, two linear milling mechanisms 18 are arranged below the cross beam of the portal frame 3, the two linear milling mechanisms 18 are respectively arranged right above the two clamping blocks 8, and a milling cutter 19 of each linear milling mechanism 18 is arranged on the rear side of the clamping block 8; two compression oil cylinders 15 are fixedly arranged on a cross beam of the portal frame 3, and piston rods of the two compression oil cylinders 15 are fixedly arranged on the top surface of the pressing plate 16. The height of the vertical face 20 of the L-shaped opening 9 is less than the thickness of the high-speed printed circuit board 25.

Two straight lines mill 18 bilateral symmetry settings of mechanism, and straight line mills mechanism 18 and includes hydraulic pressure slip table 21, driving motor 22 and milling cutter 19, hydraulic pressure slip table 21 vertically sets up and sets firmly on the basal surface of portal frame 3 crossbeam, and driving motor 22 vertically sets up, and driving motor 22's frame is fixed in on hydraulic pressure slip table 21's the removal platform 23 through the flange, and milling cutter 19 installs on driving motor 22's output shaft.

The processing device further comprises a controller, the controller is electrically connected with the electromagnetic valve of the pressing oil cylinder 15, the electromagnetic valve of the lifting oil cylinder 12, the servo motor 13 and the driving motor 22, a worker can control the extension or retraction of the piston rods of the pressing oil cylinder 15 and the lifting oil cylinder 12 through the controller, and meanwhile, the servo motor 13 and the driving motor 22 can be controlled to be started or closed, so that the processing device is greatly convenient for the operation of the worker and has the characteristic of high automation degree.

The processing method for the outer end face seam allowance of the high-speed printed circuit board comprises the following steps:

s1, a worker takes a plurality of high-speed printed circuit boards 25 to be processed, then orderly stacks the plurality of high-speed printed circuit boards 25, and then drills two positioning holes 24 on each layer of high-speed printed circuit boards 25, so as to ensure that the distance between the two positioning holes 24 is equal to the distance between the two positioning columns 6, and ensure that the diameter of the positioning holes 24 is equal to the outer diameter of the positioning columns 6, as shown in fig. 14, the two positioning holes are processed on the high-speed printed circuit boards;

s2, positioning the high-speed printed circuit board, namely, a worker takes one high-speed printed circuit board 25, then the two positioning holes 24 in the high-speed printed circuit board 25 are respectively sleeved on the two positioning columns 6, and the high-speed printed circuit board 25 is supported on the top surface of the positioning table 5, so that the positioning of the high-speed printed circuit board is realized, as shown in figures 15-16, the left and right extending ends of the high-speed printed circuit board 25 are respectively supported on the bottom surfaces 10 of the two clamping blocks 8, and the left and right end surfaces of the high-speed printed circuit board 25 are respectively opposite to the vertical surfaces 20 of the two clamping blocks 8;

s3, horizontally clamping the high-speed printed circuit board, controlling piston rods of the two clamping oil cylinders 4 to retract by workers, driving the L plate 7 to move inwards by the piston rods, driving the lifting oil cylinder 12 and the clamping blocks 8 to move synchronously by the L plate 7, and clamping the high-speed printed circuit board 25 between the vertical surfaces 20 of the two clamping blocks 8 after the piston rods of the two clamping oil cylinders 4 retract completely, so that the high-speed printed circuit board 25 is horizontally clamped as shown in figures 17-19;

s4, vertically clamping the high-speed printed circuit board, wherein a worker controls a piston rod of the pressing oil cylinder 15 to extend downwards, the piston rod drives the pressing plate 16 to move downwards, the positioning column 6 firstly enters the guide hole 17, and then the pressing plate 16 presses the top surface of the high-speed printed circuit board 25, so that the vertical clamping of the high-speed printed circuit board 25 is realized, as shown in FIG. 20;

s5, forming the semi-finished high-speed printed circuit board, wherein a worker controls a driving motor 22 to start firstly, the driving motor 22 drives a milling cutter 19 to rotate, then the worker controls hydraulic sliding tables 21 of two linear milling mechanisms 18 to start simultaneously, the hydraulic sliding tables 21 drive a moving table 23 to move forwards, the moving table 23 drives the driving motor 22 and the milling cutter 19 to move forwards synchronously, the rotating milling cutter 19 is attached to the top surface of a clamping block 8 to mill the material of the outer end face of the high-speed printed circuit board 25 from back to front gradually, the cutting direction of the milling cutter 19 is shown by solid arrows in FIG. 18, and after the milling cutter 19 passes through the high-speed printed circuit board 25, the male ends 26 are formed on the left outer end face and the right outer end face of the high-speed printed circuit board 25, as shown in FIG. 21, and the structure of the formed semi-finished high-speed printed circuit board is shown in FIG. 22; in steps S3 to S5, since the high-speed printed circuit board 25 is clamped between the vertical surfaces 20 of the two clamping blocks 8, and the left and right extending ends of the high-speed printed circuit board 25 are respectively supported on the bottom surfaces 10 of the two clamping blocks 8, the clamping blocks 8 counteract the downward cutting force applied to the high-speed printed circuit board 25 by the milling cutter 19, and ensure that the bottom surface of the processed spigot 26 is a horizontal surface rather than an inclined surface 28, thereby greatly improving the molding quality of the spigot 26, further greatly improving the production quality of the finished high-speed printed circuit board, eliminating the need for subsequent correction, omitting redundant processes, and greatly improving the production efficiency of products.

S6, forming the finished high-speed printed circuit board, wherein a worker controls each servo motor 13 to start, the servo motors 13 drive the drill bits 14 to rotate, then the worker controls the piston rods of the lifting cylinders 12 to extend upwards, the piston rods drive the servo motors 13 to move upwards, the drill bits 14 penetrate through the through grooves 11 and drill a plurality of required through holes 27 on the bottom surface of the seam allowance 26, and therefore the finished high-speed printed circuit board is finally produced, and the structure of the finished high-speed printed circuit board is as shown in figures 23-24; in the process from step S3 to step S6, the high-speed printed circuit board is clamped by a tool once, so that the seam allowance 26 can be formed on the left and right outer end surfaces of the high-speed printed circuit board 25, and then the plurality of through holes 27 are drilled on the bottom surface of the seam allowance 26, therefore, compared with the traditional two-time tool clamping of the high-speed printed circuit board, the error caused by two-time positioning is greatly eliminated, thereby greatly improving the position accuracy of the drilled through holes 27, ensuring that the positions of the through holes 27 on the bottom surface of the seam allowance 26 meet the requirements, further greatly improving the production quality of the finished high-speed printed circuit board, and having the characteristic of high forming accuracy. In addition, no operation of transferring the high-speed printed circuit board 25 is performed in the middle, so that the production period of the product is greatly shortened, and the production efficiency of the product is greatly improved.

And S7, repeating the operations of the steps S2-S6, and continuously producing a plurality of finished high-speed printed circuit boards in batches. In the molding process, because the positioning modes of the high-speed printed circuit boards 25 are consistent and the clamping modes are also the same, the sizes of the two rabbets 26 in each product are ensured to be consistent, and the positions of the through holes 27 on the bottom surfaces of the rabbets 26 are also consistent, so that the consistency of the products is greatly improved, and the molding quality of the finished high-speed printed circuit boards is further improved.

Finally, it should be noted that: although the present invention 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 above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (1)

1. A processing method for a seam allowance on the outer end face of a high-speed printed circuit board adopts a processing device, the processing device comprises a workbench (1), a support (2) fixedly arranged on the table top of the workbench (1), and a portal frame (3) fixedly arranged on the table top of the workbench (1), the portal frame (3) is erected outside the support (2), two horizontally arranged clamping cylinders (4) are fixedly arranged on the top surface of the support (2), a positioning table (5) is fixedly arranged between the cylinders of the two clamping cylinders (4), two positioning columns (6) are fixedly arranged on the top surface of the positioning table (5), an L plate (7) positioned on the outer side of the support (2) is arranged on the action end of a piston rod of the two clamping cylinders (4), a vertical plate of the L plate (7) is welded on the action end of the piston rod of the clamping cylinder (4), and a clamping block (8) is welded on the top of the vertical plate, the upper end part of the clamping block (8) is provided with an L-shaped opening (9) which is arranged towards the direction of the positioning table (5), the bottom surface (10) of the L-shaped opening (9) is flush with the top surface of the positioning table (5), the bottom surface (10) of the L-shaped opening (9) is provided with a plurality of through grooves (11) along the longitudinal direction, a plurality of lifting oil cylinders (12) which respectively correspond to the through grooves (11) are fixedly arranged on a horizontal plate of the L plate (7), the action end of a piston rod of each lifting oil cylinder (12) is fixedly provided with a servo motor (13), and an output shaft of the servo motor (13) is connected with a drill bit (14) which extends into the through grooves (11);

a compression oil cylinder (15) is fixedly arranged on a cross beam of the portal frame (3), a piston rod of the compression oil cylinder (15) penetrates through the cross beam, a pressing plate (16) is fixedly arranged on an extending end of the compression oil cylinder, the pressing plate (16) is arranged right above the positioning table (5), two guide holes (17) are formed in the pressing plate (16), the two guide holes (17) are respectively arranged right above the two positioning columns (6), two linear milling mechanisms (18) are arranged below the cross beam of the portal frame (3), the two linear milling mechanisms (18) are respectively arranged right above the two clamping blocks (8), and a milling cutter (19) of each linear milling mechanism (18) is arranged on the rear side of each clamping block (8); the clamping blocks (8) positioned at the two sides of the positioning table (5) are symmetrically arranged relative to the positioning table (5); the outer diameter of the positioning column (6) is equal to the diameter of the guide hole (17); two compression oil cylinders (15) are fixedly arranged on a cross beam of the portal frame (3), and piston rods of the two compression oil cylinders (15) are fixedly arranged on the top surface of the pressing plate (16); the height of the vertical surface (20) of the L-shaped opening (9) is less than the thickness of the high-speed printed circuit board (25); a plurality of support legs supported on the ground are fixedly arranged on the bottom surface of the workbench (1); the two linear milling mechanisms (18) are arranged in bilateral symmetry, each linear milling mechanism (18) comprises a hydraulic sliding table (21), a driving motor (22) and a milling cutter (19), the hydraulic sliding tables (21) are longitudinally arranged and fixedly arranged on the bottom surface of a cross beam of the portal frame (3), the driving motors (22) are vertically arranged, a base of each driving motor (22) is fixed on a moving table (23) of each hydraulic sliding table (21) through a flange, and the milling cutters (19) are arranged on an output shaft of each driving motor (22); this processingequipment still includes the controller, the controller is connected its characterized in that with the solenoid valve of pressure cylinder (15), the solenoid valve of lift cylinder (12), servo motor (13), driving motor (22) electricity: the method comprises the following steps:

s1, a worker takes a plurality of high-speed printed circuit boards (25) to be processed, then the high-speed printed circuit boards (25) are orderly stacked, then two positioning holes (24) are drilled in each layer of high-speed printed circuit board (25), the distance between the two positioning holes (24) is ensured to be equal to the distance between the two positioning columns (6), and the diameter of each positioning hole (24) is ensured to be equal to the outer diameter of each positioning column (6);

s2, positioning the high-speed printed circuit board, wherein a worker takes one high-speed printed circuit board (25), then sleeves two positioning holes (24) in the high-speed printed circuit board (25) on two positioning columns (6) respectively, and supports the high-speed printed circuit board (25) on the top surface of a positioning table (5), so that the positioning of the high-speed printed circuit board is realized, at the moment, the left and right extending ends of the high-speed printed circuit board (25) are supported on the bottom surfaces (10) of two clamping blocks (8) respectively, and the left and right end surfaces of the high-speed printed circuit board (25) are opposite to the vertical surfaces (20) of the two clamping blocks (8) respectively;

s3, horizontally clamping the high-speed printed circuit board, controlling piston rods of two clamping oil cylinders (4) to retract by workers, driving an L plate (7) to move inwards by the piston rods, driving a lifting oil cylinder (12) and clamping blocks (8) to synchronously move by the L plate (7), and clamping the high-speed printed circuit board (25) between vertical surfaces (20) of the two clamping blocks (8) after the piston rods of the two clamping oil cylinders (4) are completely retracted, so that the high-speed printed circuit board (25) is horizontally clamped;

s4, vertically clamping the high-speed printed circuit board, wherein a worker controls a piston rod of a pressing oil cylinder (15) to extend downwards, the piston rod drives a pressing plate (16) to move downwards, a positioning column (6) firstly enters a guide hole (17), and then the pressing plate (16) presses the top surface of the high-speed printed circuit board (25), so that the high-speed printed circuit board (25) is vertically clamped;

s5, forming a semi-finished high-speed printed circuit board, wherein a worker controls a driving motor (22) to start firstly, the driving motor (22) drives a milling cutter (19) to rotate, then the worker controls hydraulic sliding tables (21) of two linear milling mechanisms (18) to start simultaneously, the hydraulic sliding tables (21) drive a moving table (23) to move forwards, the moving table (23) drives the driving motor (22) and the milling cutter (19) to move forwards synchronously, the milling cutter (19) rotates to gradually mill the material of the outer end face of the high-speed printed circuit board (25) from back to front along the top surface of a clamping block (8), and after the milling cutter (19) passes through the high-speed printed circuit board (25), the left outer end face and the right outer end face of the high-speed printed circuit board (25) are formed with spigots (26);

s6, forming a finished high-speed printed circuit board, wherein a worker controls each servo motor (13) to start, the servo motors (13) drive drill bits (14) to rotate, then the worker controls piston rods of each lifting oil cylinder (12) to extend upwards, the piston rods drive the servo motors (13) to move upwards, the drill bits (14) penetrate through the through grooves (11) and drill a plurality of required through holes (27) on the bottom surface of the seam allowance (26), and therefore the finished high-speed printed circuit board is finally produced;

and S7, repeating the operations of the steps S2-S6, and continuously producing a plurality of finished high-speed printed circuit boards in batches.

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