CN113199098B

CN113199098B - Multi-channel wire cut electric discharge machine

Info

Publication number: CN113199098B
Application number: CN202110676742.6A
Authority: CN
Inventors: 汪群友; 华盟章; 朱启武
Original assignee: Tongling Yuanyi Fine Machinery Co ltd
Current assignee: Tongling Yuanyi Fine Machinery Co ltd
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2024-01-26
Anticipated expiration: 2041-06-18
Also published as: CN113199098A

Abstract

The invention relates to the technical field of wire-cut electrical discharge machining, in particular to a multichannel wire-cut electrical discharge machining device; the invention comprises a numerical control device, a workbench, a base and a protective cover which are sequentially and transversely arranged from left to right, wherein a cutting assembly is arranged on the workbench, a shifting assembly is arranged on the base, the cutting assembly comprises a take-up pulley, a first adjusting plate and a second adjusting plate which are sequentially and transversely arranged on the workbench from left to right, the shifting assembly comprises a transverse supporting plate, a longitudinal supporting plate, a transverse double-headed motor, a longitudinal double-headed motor, a transverse guide rod, a longitudinal guide rod, a transverse screw and a longitudinal screw protective cover, the protective cover is arranged in the middle of the top plate surface of the longitudinal supporting plate, a fixing assembly is arranged in the protective cover, and the numerical control device controls the cutting assembly and the shifting assembly and also controls a cooling assembly and a drying assembly which are matched with the cutting assembly; the invention can effectively solve the problems of poor universality, serious mechanical damage and the like in the prior art.

Description

Multi-channel wire cut electric discharge machine

Technical Field

The invention relates to the technical field of wire-cut electrical discharge machining, in particular to a multichannel wire-cut electrical discharge machining device.

Background

Wire cut electrical discharge machining breaks through the limitations of traditional machining methods (turning, milling and the like) on cutter strength, hardness and the like, and becomes an irreplaceable machining technology in the key manufacturing fields of aerospace, national defense and military industry, biomedical treatment, novel material machining and the like. However, compared with the traditional machining method, the machining efficiency of the wire-cut electric discharge machining is relatively low, so that the improvement of the machining efficiency is always a research focus in the field of wire-cut electric discharge machining at home and abroad, and is also an important guarantee for further expanding the application range of the wire-cut electric discharge machining.

For wire cut electrical discharge machining, the cutting efficiency is improved mainly by increasing the energy of discharge pulses, but increasing the energy of discharge pulses inevitably leads to reduced quality of the cutting surface and aggravated loss of electrode wires, and meanwhile, the discharge conditions between electrodes are worsened, so that machining is unstable, even wire breakage occurs, and therefore, the improvement of the efficiency and the improvement of the quality of the cutting surface and the low loss of the electrode wires are contradictory, and coordination and unification cannot be realized according to the traditional machining mode, but the theory and practical significance are very important in reality.

The application number is: in CN201920472588.9, a wire-cut electric discharge multi-channel efficient machining structure is disclosed, each independent metal workpiece is mutually insulated, a resistor and a current probe are serially connected behind each independent metal workpiece, each independent metal workpiece of the serially connected resistor and current probe is parallelly connected with a pulse power supply, and the whole workpiece set is artificially made to have a "semiconductor" characteristic. The multi-channel electric discharge machining can disperse pulse discharge energy from one discharge channel to a plurality of discharge channels, and disperse the discharge energy through the plurality of discharge channels formed simultaneously, so that the cutting efficiency is improved, the surface quality is improved, and the electrode wire loss is reduced; meanwhile, the problem of unstable processing caused by instant vaporization of the interelectrode working fluid due to high-energy discharge is solved, so that the processing can be continuously and stably carried out by adopting larger discharge energy.

However, the following disadvantages still exist in the practical application process:

first, the versatility is poor because it is not possible to adjust the length of the wire at the vertical ground in real time according to the number of metal workpieces to be wire cut simultaneously, and it is also inconvenient to spray the cutting fluid to the contact point with the wire on each metal workpiece.

Secondly, equipment damage is serious, because the cutting fluid can be used to spray the cutting point when wire-electrode cutting is carried out to the metal work piece, thereby carry out cooling and wash away the metal residue that cuts off to the cutting point, also can promote the smooth finish of cutting surface simultaneously, then in order to reduce the loss of seal wire in actual production activity, need take-up pulley constantly rotate to order to drive the seal wire and stop the motion, this just makes the cutting fluid of adhesion on the seal wire be taken out and splash to the surface everywhere of whole cutting device, thereby lead to the fact the corruption to whole cutting device's surface, thereby reduced whole cutting device's life.

Disclosure of Invention

The present invention aims to solve the drawbacks of the prior art and to solve the problems set forth in the background art.

In order to achieve the above purpose, the present invention adopts the following technical scheme: the multichannel wire-cut electric discharge machine comprises a numerical control device, a workbench, a base and a protective cover which are sequentially and transversely arranged from left to right, wherein a cutting assembly is arranged on the workbench, and a shifting assembly is arranged on the base;

The cutting assembly comprises a take-up pulley, a first adjusting plate and a second adjusting plate which are sequentially and transversely arranged on the workbench from left to right, a front end plate of the first adjusting plate is inwards concavely provided with three first sliding grooves with the stroke directions perpendicular to the ground, first sliding blocks matched with the first sliding grooves are in sliding connection with the first sliding grooves, first screw rods which are connected with the ground with the vertical central axis are respectively rotated in the first sliding grooves, thread through grooves matched with the first screw rods are respectively arranged on the first sliding blocks, the first screw rods are respectively driven to rotate by a first motor which is arranged at the top of the first adjusting plate, a second sliding groove with the stroke directions perpendicular to the ground is concavely arranged on a front end plate surface of the second adjusting plate, the second sliding blocks matched with the second sliding grooves are in sliding connection with the second sliding grooves, second screw rods which are connected with the ground with the vertical central axis are rotated in the second sliding grooves, the second sliding block is provided with a threaded through groove matched with a second screw rod, the second screw rod is driven to rotate by a second motor arranged at the top of a second adjusting plate, the end face of the second sliding block, which is positioned outside a second sliding groove, is fixedly connected with a first cross arm, the front end plate face of the second adjusting plate, which is close to the bottom of the second sliding block, is provided with a second cross arm, the front end side wall faces of the first cross arm and the second cross arm are symmetrically provided with a group of first guide wheels, the end face of the first sliding block, which is positioned outside the first sliding groove, is provided with a second guide wheel, the projection of the first guide wheel and the second guide wheel on the ground is positioned on the same straight line, a plurality of guide wires are wound on the wire winding wheel, one end of each guide wire is fixed on the wire winding wheel, and the other end of each guide wire sequentially winds all the first guide wheels, the second guide wheel is fixed with the take-up wheel;

The displacement assembly comprises a transverse supporting plate, a longitudinal supporting plate, a transverse double-headed motor, a transverse guide rod, a longitudinal guide rod, a transverse screw rod and a longitudinal screw rod, wherein transverse guide bodies are arranged at the front end and the rear end of the bottom of the transverse supporting plate in a protruding mode, a pair of transverse driving bodies are also arranged on the plate surface between the two transverse guide bodies in a protruding mode in a symmetrical mode with respect to the longitudinal direction, longitudinal guide bodies are arranged at the left end and the right end of the bottom of the longitudinal supporting plate in a protruding mode, a pair of longitudinal driving bodies are also arranged on the plate surface between the two longitudinal guide bodies in a symmetrical mode with respect to the transverse direction in the bottom of the longitudinal supporting plate in a protruding mode, transverse guide rods with central axes along the transverse direction are arranged at the front end and the rear end of the top of the base, angle blocks at the end of the transverse guide rod are fixed on the base, transverse double-headed motor is arranged in the middle of the area between the two transverse guide rods, the transverse double-headed motor is arranged at the two ends of the top of the base, the longitudinal guide rods are arranged at the left end and the right end of the bottom of the longitudinal supporting plate in a protruding mode, the longitudinal guide body along the longitudinal direction, the angle blocks at the end of the longitudinal guide rod are fixed on the plate between the two longitudinal guide rods, the two longitudinal guide rods are arranged at the two end of the base, and the longitudinal guide rods are arranged at the two longitudinal guide rods, and the longitudinal guide rods are respectively matched with the longitudinal guide rods, and the longitudinal guide rods are arranged at the two ends;

The protective cover is arranged in the middle of the top plate surface of the longitudinal support plate, and a fixing assembly is arranged in the protective cover;

the numerical control device controls the cutting assembly and the shifting assembly and also controls a cooling assembly and a drying assembly which are matched with the cutting assembly.

Further, the guide wire between the wire take-up wheel and the first guide wheel at the leftmost end of the second cross arm is in a left-high and right-low trend, the guide wire between the wire take-up wheel and the second guide wheel at the leftmost end of the first adjusting plate is in a left-low and right-high trend, the second guide wheels at the left end and the right end of the first adjusting plate are higher than the second guide wheel in the middle of the first adjusting plate in the vertical direction, and the second guide wheel at the rightmost end of the first adjusting plate is lower than the first guide wheel on the first cross arm in the vertical direction; the wire take-up wheel is driven to rotate by a rotating motor controlled by the numerical control device.

Further, a pressure sensor controlled by a numerical control device is arranged on the shaft body of the second guide wheel in the middle of the first adjusting plate.

Still further, be equipped with a pair of horizontal track board on the lateral wall of the left side of workstation and being close to its bottom symmetrically, the travel groove has been seted up to the top face of track board inwards sunken, the front and back both ends of base bottom all are equipped with the stroke piece, the stroke piece is the slip respectively in corresponding travel groove, two the track board is close to each other and all is equipped with the rack on the parallel lateral wall, the front and back both ends of base bottom all are equipped with the travel motor that receives numerical control device control, the terminal driving gear of output shaft of travel motor meshes with the rack that corresponds.

Furthermore, the left end and the right end of the protective cover are provided with notches, the bottom of the notch at the left end of the protective cover is lower than the second cross arm in the vertical direction, the top of the protective cover is in a completely open state, the notch at the right end of the protective cover is symmetrically provided with a pair of door plates, and the outer side plate surfaces of the door plates are provided with handles;

the fixing assembly comprises two groups of horizontal plates, a group of mounting holes are formed in each horizontal plate, the two groups of horizontal plates are symmetrically arranged on the inner side walls of the front end and the rear end of the protective cover respectively, a group of mounting holes with collinear central axes are in a penetrating connection relationship with the same limiting screw, and limiting nuts with the same number as that of the water plates in the same group of horizontal plates are arranged on the same limiting screw;

the protective cover is also provided with a negative pressure component controlled by the numerical control device.

Still further, negative pressure subassembly includes negative pressure pump, waste liquid bucket, negative pressure pipe and negative pressure post, the annular that matches rather than the bottom shape is seted up to the protection casing inside, set up a set of air guide groove with annular intercommunication symmetrically on the protection casing inside diapire, the notch department in air guide groove all is equipped with the negative pressure post, the cylinder of negative pressure post is last to be fully equipartition with the negative pressure hole with the air guide groove intercommunication, set up a discharge groove with the annular intercommunication on the lateral wall of protection casing, notch, negative pressure pump and the waste liquid bucket of discharge groove outer end are through negative pressure pipe intercommunication in proper order, and negative pressure pump and waste liquid bucket all set up on the carrier backup pad that stretches out on the base rear end lateral wall;

The horizontal plate, the limit screw and the limit screw are all made of electric insulation materials.

Still further, cooling module includes stock solution bucket, delivery pump, shunt tubes, pipe, flow valve, hose, connecting pipe, gripper jaw and installation pole, stock solution bucket, delivery pump and shunt tubes all set up on the workstation, stock solution bucket, delivery pump and shunt tubes pass through the pipe and communicate in proper order, be equipped with a set of exit slot on the body of shunt tubes, all be equipped with the flow valve on the exit slot, pass through hose connection between flow valve and the connecting pipe, the other end of connecting pipe is equipped with universal pipe and shower nozzle in proper order, all be equipped with the fin on the rear end lateral wall at first xarm, the second xarm right-hand member, fin fixed connection on the bottom and the second xarm of installation pole to the body of rod and the fin sliding connection on the first xarm of installation pole upper end, gripper jaw detachable fixes on the installation pole, connecting pipe detachable fixed mounting is on the gripper jaw.

Furthermore, the clamping claws are provided with strip-shaped blocks, the side walls of one end of each strip-shaped block are inwards sunken and provided with T-shaped sliding grooves, the pipe body of the connecting pipe is provided with T-shaped sliding blocks matched with the T-shaped sliding grooves, and the block bodies of the strip-shaped blocks at the notch of the T-shaped through groove are inserted with blocking pieces;

The strip-shaped block is made of ferromagnetic metal materials, and the baffle is made of magnetic materials;

the tail ends of the claw pieces of the clamping claws are respectively provided with a locking bolt and a locking nut which are matched.

Still further, drying component includes air compressor machine, vortex tube, cold air pipe, first cover body and second cover body, detachably fixed mounting has first cover body, second cover body on first xarm, the second xarm respectively, the right-hand member of first cover body is close to the right-hand member tip of first xarm, the right-hand member of second cover body is close to the right-hand member tip of second xarm, the top of first cover body symmetrically is equipped with a set of branch pipe of its inside of intercommunication, the branch pipe all communicates with cold air pipe inside, the other end of cold air pipe is connected with the cold junction of vortex tube, the inlet end of vortex tube is connected with the output of air compressor machine, the air compressor machine sets up on the workstation.

Further, the inner wall of the lower end of the second cover body is in a slope shape with left low and right high, and the lower end of the left end of the second cover body is provided with a liquid discharge pipe.

Compared with the prior art, the invention has the advantages and positive effects that,

1. the invention is characterized in that a wire take-up wheel, a first adjusting plate and a second adjusting plate are arranged on a workbench, a front end plate of the first adjusting plate is provided with three first sliding grooves with the stroke directions perpendicular to the ground in an inward sunken manner, first sliding blocks matched with the first sliding grooves are connected in a sliding manner, first screw rods with the central axes perpendicular to the ground are connected in the first sliding grooves in a rotating manner, thread through grooves matched with the first screw rods are arranged on the first sliding blocks, the first screw rods are respectively driven to rotate by a first motor corresponding to the top of the first adjusting plate, a second sliding groove with the stroke directions perpendicular to the ground is provided on the front end plate surface of the second adjusting plate in a sunken manner, a second sliding block matched with the second sliding grooves is connected in a sliding manner, a second screw rod with the central axes perpendicular to the ground is connected in a rotating manner in the second sliding grooves, thread through grooves matched with the second screw rods are arranged on the second sliding blocks, the second screw is driven to rotate by a second motor arranged at the top of a second adjusting plate, a first cross arm is fixedly connected to the end face of a second sliding block positioned outside a second sliding groove, a second cross arm is arranged on the front end plate face of the second adjusting plate close to the bottom of the second adjusting plate, a group of first guide wheels are symmetrically arranged on the front end side wall faces of the first cross arm and the second cross arm, second guide wheels are arranged on the end face of the first sliding block positioned outside the first sliding groove, the projections of the first guide wheels and the second guide wheels on the ground are positioned on the same straight line, a plurality of rings of guide wires are wound on the wire winding wheels, one ends of the guide wires are fixed on the wire winding wheels, the other ends of the guide wires are sequentially wound around all the first guide wheels and the second guide wheels and then are fixed with the wire winding wheels, the guide wires between the wire winding wheels and the first guide wheels at the leftmost ends of the second cross arm are in a left-high-right low trend, the guide wire between the wire take-up wheel and the second guide wheel at the leftmost end of the first adjusting plate is in a trend of left low and right high, the second guide wheels at the left end and the right end of the first adjusting plate are higher than the second guide wheel in the middle of the first adjusting plate in the vertical direction, the second guide wheel at the rightmost end of the first adjusting plate is lower than the first guide wheel on the first cross arm in the vertical direction, the wire take-up wheel is driven to rotate by a rotating motor controlled by a numerical control device, and a pressure sensor controlled by the numerical control device is arranged on the shaft body of the second guide wheel in the middle of the first adjusting plate; the cooling assembly comprises a liquid storage barrel, a delivery pump, a split pipe, a conduit, a flow valve, a hose, a connecting pipe, clamping claws and a mounting rod, wherein the liquid storage barrel, the delivery pump and the split pipe are all arranged on a workbench, the liquid storage barrel, the delivery pump and the split pipe are sequentially communicated through the conduit, a group of outlet grooves are formed in a pipe body of the split pipe, the flow valve is arranged on the outlet grooves, the flow valve is connected with the connecting pipe through the hose, the other end of the connecting pipe is sequentially provided with a universal pipe and a spray head, the side wall of the rear end of the right end of the first cross arm and the side wall of the right end of the second cross arm are respectively provided with a fin plate, the bottom of the mounting rod is fixedly connected with the fin plates on the second cross arm, a rod body at the upper end of the mounting rod is in sliding connection with the fin plates on the first cross arm, the clamping claws are detachably fixed on the mounting rod, and the connecting pipe is detachably and fixedly installed on the clamping claws; the protection casing sets up the middle part at vertical backup pad top face, and the protection casing is inside to be equipped with fixed subassembly, and fixed subassembly includes two sets of horizontal plates, all is equipped with a set of mounting hole on the horizontal plate, and two sets of horizontal plates set up respectively on the inside wall at protection casing front and back both ends symmetrically, and a set of mounting hole of axis collineation all keeps cross-under relation with same spacing screw, is equipped with the design of quantity and the identical spacing nut of the dull and stereotyped quantity in same set of horizontal plate on the same spacing screw.

Therefore, when a worker installs a group of metal workpieces to be processed in the protective cover through the fixing component (because the second cross arm cannot move up and down, in order to reduce the guide wire length of the part vertical to the ground as much as possible, the metal workpieces to be processed need to be installed in sequence from bottom to top of a horizontal plate with the lowest height in the protective cover), then the second motor is controlled to work through the numerical control device, so that the first cross arm moves to a proper height in the vertical direction, and in the process, the numerical control device monitors the tension change on the guide wire body in real time through the pressure sensor, so that the three first motors are automatically controlled to work to respectively adjust the heights of the three second guide wheels in the vertical direction, and the tension value on the guide wire body is ensured to be always maintained in a set range; it is noted that the structure of the multi-channel wire cut electric discharge machine of the present invention, which is formed between the metal workpiece and the guide wire, is the same as that of the comparative document.

The effect of effectively improving the universality of the product is achieved.

2. In the invention, a drying component and a negative pressure component are added; the negative pressure assembly comprises a negative pressure pump, a waste liquid barrel, a negative pressure pipe and a negative pressure column, wherein an annular groove matched with the shape of the bottom of the negative pressure barrel is formed in the protective cover, a group of air guide grooves communicated with the annular groove are symmetrically formed in the bottom wall of the interior of the protective cover, negative pressure columns are arranged at the notch of each air guide groove, negative pressure holes communicated with the air guide grooves are uniformly distributed on the columns of the negative pressure columns, a discharge groove communicated with the annular groove is formed in the outer side wall of the protective cover, the notch at the outer end of the discharge groove, the negative pressure pump and the waste liquid barrel are sequentially communicated through the negative pressure pipe, and the negative pressure pump and the waste liquid barrel are arranged on a carrier supporting plate extending out of the outer side wall at the rear end of the base; the drying component comprises an air compressor, a vortex tube, a cold air tube, a first cover body and a second cover body, wherein the first cover body and the second cover body are respectively detachably and fixedly installed on the first cross arm and the second cross arm, the right end of the first cover body is close to the right end part of the first cross arm, the right end of the second cover body is close to the right end part of the second cross arm, a group of branch pipes which are communicated with the inside of the first cover body are symmetrically arranged at the top of the first cover body, the branch pipes are communicated with the inside of the cold air tube, the other end of the cold air tube is connected with the cold end of the vortex tube, the air inlet end of the vortex tube is connected with the output end of the air compressor, the air compressor is arranged on a workbench, and the inner wall of the lower end of the second cover body is in a slope shape with low left and high right, and the lower end of the left end of the second cover body is provided with a design of a liquid discharge tube.

It is noted that the movement direction of the guide wire in the invention is from the right end of the first cross arm to the right end of the second cross arm; therefore, the cutting fluid can be effectively prevented from being sputtered onto the first cross arm and the second cross arm through the first cover body and the second cover body, meanwhile, cold air is sprayed to the guide wire inside the second cover body through the cooperation of the air compressor and the vortex tube, so that the cutting fluid on the guide wire inside the second cover body is blown off and discharged through the liquid discharge tube, and meanwhile, the guide wire with the temperature increased due to electric spark cutting can be cooled, and the effective service life of the guide wire is prolonged.

The effect of effectively reducing the erosion amount of the cutting fluid sputtered in the wire-cut electric discharge process to the whole cutting device body is achieved.

Drawings

FIG. 1 is a pictorial view of the present invention at a first viewing angle;

FIG. 2 is an exploded view of the numerical control device, table and base of the present invention at a first view angle;

FIG. 3 is a pictorial view, partially in section, of a track plate at a second view angle in accordance with the present invention;

FIG. 4 is an exploded view of the base, displacement assembly and shield of the present invention at a third view angle;

FIG. 5 is an exploded view of the base, transverse support plate and longitudinal support plate of the present invention at a fourth view angle;

FIG. 6 is a visual view of the shield of the fifth aspect of the present invention after a first partial cross-sectional view thereof separated from the internal stop screw, stop nut and metal workpiece;

FIG. 7 is a schematic view of a second partial cross-sectional view of the protective cover at a sixth view angle in accordance with the present invention;

FIG. 8 is a pictorial view of the first enclosure, the second enclosure, and the drying assembly from a seventh perspective of the present invention;

FIG. 9 is a visual illustration of the cooling assembly at an eighth view angle of the present invention;

FIG. 10 is a pictorial view of the cutting assembly from the ninth view of the present invention;

FIG. 11 is a view showing the coupling tube and the holding tube separated from each other at a tenth view angle according to the present invention;

FIG. 12 is a pictorial view of the cutting assembly from the eleventh perspective of the present invention;

FIG. 13 is an enlarged view of area A of FIG. 5;

FIG. 14 is an enlarged view of area B of FIG. 5;

FIG. 15 is an enlarged view of area C of FIG. 5;

fig. 16 is an enlarged view of region D in fig. 6.

Legend description:

1-a numerical control device; 2-a workbench; 3-a base; 4-protecting cover; 5-take-up reel; 6-a first adjusting plate; 7-a second adjusting plate; 8-a first chute; 9-a first slider; 10-a first screw; 11-a first motor; 12-a second chute; 13-a second slider; 14-a second screw; 15-a second motor; 16-a first cross arm; 17-a second cross arm; 18-a first guide wheel; 19-a second guide wheel; 20-a guide wire; 21-a transverse support plate; 22-longitudinal support plates; 23-a transverse double-ended motor; 24-longitudinal double-ended motor; 25-a transverse guide bar; 26-a longitudinal guide bar; 27-a transverse screw; 28-longitudinal screw; 29-a transverse guide; 30-a transverse driving body; 31-longitudinal guides; 32-a longitudinal driving body; 33-circular through grooves; 34-groove; 35-a rotating electrical machine; 36-track plate; 37-stroke slot; 38-stroke block; 39-rack; 40-stroke motor; 41-a drive gear; 42-door panels; 43-handle; 44-horizontal plates; 45-mounting holes; 46-limiting screw rods; 47-limit nuts; 48-a negative pressure pump; 49-a waste liquid barrel; 50-a negative pressure tube; 51-a negative pressure column; 52-ring grooves; 53-an air guide groove; 54-a negative pressure hole; 55-a discharge tank; 56-a carrier support plate; 57-a liquid storage barrel; 58-a transfer pump; 59-shunt; 60-conduit; 61-flow valve; 62-hose; 63-a connecting tube; 64-clamping claws; 65-mounting a rod; 66-universal tube; 67-nozzle; 68-fin plates; 69-bar blocks; 70-T-shaped sliding grooves; 71-T-shaped slider; 72-a baffle; 73-locking a bolt; 74-locking nut; 75-air compressor; 76-vortex tube; 77-cold air pipe; 78-a first cover; 79-a second housing; 80-drain.

Detailed Description

In order that the above objects, features and advantages of the invention will be more clearly understood, a further description of the invention will be rendered by reference to the appended drawings and examples. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as described herein, and therefore the present invention is not limited to the specific embodiments of the disclosure that follow.

A multi-channel wire electric discharge machine of the present embodiment, referring to fig. 1-: the numerical control device comprises a numerical control device 1, a workbench 2, a base 3 and a protective cover 4 which are sequentially and transversely arranged from left to right, wherein a cutting assembly is arranged on the workbench 2, and a shifting assembly is arranged on the base 3; a pair of transverse track plates 36 are symmetrically arranged on the left side of the workbench 2 and close to the side wall of the bottom of the workbench, a travel groove 37 is formed in the top plate surface of the track plates 36 in an inwards concave manner, travel blocks 38 are respectively arranged at the front end and the rear end of the bottom of the base 3, the travel blocks 38 are respectively connected in the corresponding travel grooves 37 in a sliding manner, racks 39 are respectively arranged on the outer side walls of the two track plates 36 which are close to each other and parallel to each other, travel motors 40 controlled by the numerical control device 1 are respectively arranged at the front end and the rear end of the bottom of the base 3, and a driving gear 41 at the tail end of an output shaft of the travel motor 40 is meshed with the corresponding racks 39.

In this way, the worker can conveniently control the stroke motor 40 to drive the base 3 to transversely move through the numerical control device 1, so that the metal workpiece to be processed and the guide wire 20 which are arranged in the protective cover 4 are separated by a proper initial distance (because the length sizes of different metal workpieces are different), and meanwhile, the worker can conveniently clean the interior of the protective cover 4 and fixedly mount or dismount the metal workpiece.

(one) a,

The cutting assembly comprises a take-up pulley 5, a first adjusting plate 6 and a second adjusting plate 7 which are transversely arranged on the workbench 2 from left to right in sequence:

the front end plate of the first adjusting plate 6 is provided with a first chute 8 which is perpendicular to the ground in three travel directions in a inwards recessed manner, a first sliding block 9 matched with the first chute 8 is slidably connected in the first chute 8, a first screw rod 10 which is perpendicular to the ground in the central axis is rotatably connected in the first chute 8, a threaded through groove matched with the first screw rod 10 is formed in the first sliding block 9, and the first screw rods 10 are driven to rotate by a first motor 11 which is arranged at the top of the first adjusting plate 6.

The front end plate surface of the second adjusting plate 7 is provided with a second chute 12 with a travel direction perpendicular to the ground in a recessed way, a second sliding block 13 matched with the second chute 12 is in sliding connection, a second screw 14 with a central axis perpendicular to the ground is rotationally connected to the second chute 12, a threaded through groove matched with the second screw 14 is formed in the second sliding block 13, the second screw 14 is driven to rotate by a second motor 15 arranged at the top of the second adjusting plate 7, a first cross arm 16 is fixedly connected to the end surface of the second sliding block 13 positioned outside the second chute 12, a second cross arm 17 is arranged on the front end plate surface of the second adjusting plate 7 close to the bottom of the second adjusting plate, a group of first guide wheels 18 are symmetrically arranged on the front end side wall surfaces of the first cross arm 16 and the second cross arm 17, second guide wheels 19 are respectively arranged on the end surfaces of the first sliding block 9 positioned outside the first chute 8, and the projections of the first guide wheels 18 and the second guide wheels 19 on the ground are positioned on the same straight line; note that in this embodiment the projections of the right end portions of the first and second cross arms 16, 17 coincide on the ground, and the projection of the rightmost first guide wheel 18 on the first cross arm 16 and the rightmost second guide wheel 19 on the second cross arm 17 coincide on the ground.

And the shaft body of the second guide wheel 19 in the middle of the first adjusting plate 6 is provided with a pressure sensor controlled by the numerical control device 1, so that the numerical control device 1 can detect the tension of the guide wire 20 by detecting the pressure of the second guide wheel 19 in the middle of the first adjusting plate 6 on the shaft body through the pressure sensor.

The take-up pulley 5 is driven to rotate by a rotating motor 35 controlled by the numerical control device 1, a plurality of circles of guide wires 20 are wound on the take-up pulley 5, one ends of the guide wires 20 are fixed on the take-up pulley 5, and the other ends of the guide wires 20 are fixed with the take-up pulley 5 after sequentially winding all the first guide wheels 18 and the second guide wheels 19.

The guide wire 20 between the take-up pulley 5 and the first guide wheel 18 at the leftmost end of the second cross arm 17 is in a left-high and right-low trend, the guide wire 20 between the take-up pulley 5 and the second guide wheel 19 at the leftmost end of the first adjusting plate 6 is in a left-low and right-high trend, the second guide wheels 19 at the left and right ends of the first adjusting plate 6 are higher than the second guide wheel 19 in the middle of the first adjusting plate 6 in the vertical direction, and the second guide wheel 19 at the rightmost end of the first adjusting plate 6 is lower than the first guide wheel 18 on the first cross arm 16 in the vertical direction; this ensures that the guide wire 20 is in contact with each of the first guide wheel 18 and the second guide wheel 19.

(II),

The displacement assembly comprises a transverse support plate 21, a longitudinal support plate 22, a transverse double-headed motor 23, a longitudinal double-headed motor 24, a transverse guide bar 25, a longitudinal guide bar 26, a transverse screw 27 and a longitudinal screw 28:

the front and rear ends of the bottom of the transverse supporting plate 21 are provided with transverse guide bodies 29 in a protruding manner, and a pair of transverse driving bodies 30 are also symmetrically and convexly arranged on the plate surface of the bottom of the transverse supporting plate 21 between the two transverse guide bodies 29 in the longitudinal direction;

the left and right ends of the bottom of the longitudinal support plate 22 are provided with longitudinal guide bodies 31 in a protruding manner, and a pair of longitudinal driving bodies 32 are also symmetrically and convexly arranged on the plate surface of the bottom of the longitudinal support plate 22 between the two longitudinal guide bodies 31;

the front end and the rear end of the top of the base 3 are respectively provided with a transverse guide rod 25 with a central axis along the transverse direction, corner blocks at the end parts of the transverse guide rods 25 are fixed on the base 3, the middle part of the top of the base 3, which is positioned in the area between the two transverse guide rods 25, is provided with a transverse double-headed motor 23, and the transverse two ends of the transverse double-headed motor 23 are respectively provided with a transverse screw 27;

the left and right ends of the top of the transverse supporting plate 21 are respectively provided with a longitudinal guide rod 26 with a central axis along the longitudinal direction, corner blocks at the end parts of the longitudinal guide rods 26 are respectively fixed on the transverse supporting plate 21, the middle part of the top of the transverse supporting plate 21, which is positioned in the area between the two longitudinal guide rods 26, is provided with a longitudinal double-headed motor 24, and the longitudinal two ends of the longitudinal double-headed motor 24 are respectively provided with a longitudinal screw 28;

Circular through grooves 33 matched with the transverse guide rods 25 and the longitudinal guide rods 26 are respectively formed in the transverse guide body 29 and the longitudinal guide body 31, and screw grooves 34 matched with the transverse screw rod 27 and the longitudinal screw rod 28 are respectively formed in the transverse driving body 30 and the longitudinal driving body 32.

It should be noted that, in this embodiment, the bottom edges of the transverse support plate 21 and the longitudinal support plate 22 are provided with protruding rings, so that tightness between the bottom plate surface of the transverse support plate 21 and the top plane of the base 3, between the top plate surface of the transverse support plate 21 and the top plate surface of the longitudinal support plate 22 can be well ensured, so that the transverse guide rod 25, the longitudinal guide rod 26, the transverse screw 27, the longitudinal screw 28, the transverse motor and the longitudinal motor are effectively protected from being eroded by sputtered cutting fluid, and production safety and stability can be effectively improved (because the limbs of workers (such as fingers, for example, between the longitudinal screw 28 and the longitudinal driving body 32, between the transverse screw 27 and the transverse driving body 30, between the transverse guide rod and the transverse guide body 29, or between the longitudinal guide rod and the longitudinal guide body 31) can be effectively prevented from being clamped).

(III),

The protection casing 4 sets up the middle part at the top face of vertical backup pad 22, and protection casing 4 inside is equipped with fixed subassembly:

The left and right ends of the protective cover 4 are provided with notches, the bottom of the notch at the left end of the protective cover 4 is lower than the second cross arm 17 in the vertical direction, the top of the protective cover 4 is in a completely open state, the notch at the right end of the protective cover 4 is symmetrically provided with a pair of door plates 42, the outer side plate surfaces of the door plates 42 are provided with handles 43, the handles 43 are used for facilitating workers to open or close the door plates 42, and simultaneously, workers can conveniently install metal workpieces to be processed on the horizontal plates 44 or detach the metal workpieces to be processed.

The fixed assembly comprises two groups of horizontal plates 44, wherein the horizontal plates 44 are respectively provided with a group of mounting holes 45, the two groups of horizontal plates 44 are respectively symmetrically arranged on the inner side walls at the front end and the rear end of the protective cover 4, the group of mounting holes 45 with collinear central axes are respectively in a penetrating connection with the same limiting screw 46, and the same limiting screw 46 is provided with limiting nuts 47 with the same number as the number of the water plates 44 in the same group of horizontal plates 44;

notably, the horizontal plate 44, the limit screw 46 and the limit nut 47 are made of electrically insulating materials, so that electrical insulation between the metal workpieces to be processed installed in the protective cover 4 can be effectively ensured.

It should be noted that, the two ends of the metal workpiece to be processed are provided with electrically insulating side plate bodies, a group of through holes corresponding to the mounting holes 45 on the horizontal plate 44 are formed on the side plate, and in order to ensure the stability of the metal workpiece to be processed during the fixed mounting, the number of the through holes on the same side plate body is at least two.

It should be noted that the door panel 42 is made of a transparent material during the practical application, so that the worker can observe the wire-cut electric discharge machine effectively.

(IV),

The protective cover 4 is also provided with a negative pressure component controlled by the numerical control device 1:

the negative pressure assembly comprises a negative pressure pump 48, a waste liquid barrel 49, a negative pressure pipe 50 and a negative pressure column 51, a ring groove 52 matched with the shape of the bottom of the negative pressure barrel is formed in the protective cover 4, a group of air guide grooves 53 communicated with the ring groove 52 are symmetrically formed in the bottom wall of the protective cover 4, the negative pressure column 51 is arranged at the notch of the groove of the guide wire 20, negative pressure holes 54 communicated with the air guide grooves 53 are uniformly distributed on the column body of the negative pressure column 51, a discharge groove 55 communicated with the ring groove 52 is formed in the outer side wall of the protective cover 4, the notch at the outer end of the discharge groove 55, the negative pressure pump 48 and the waste liquid barrel 49 are sequentially communicated through the negative pressure pipe 50, and the negative pressure pump 48 and the waste liquid barrel 49 are arranged on a carrying support plate 56 extending out of the outer side wall of the rear end of the base 3.

Thus, the cutting waste liquid generated in the wire electric discharge cutting process can be effectively collected in the waste liquid barrel 49, and meanwhile, the negative pressure pump 48 can effectively prevent the cutting waste liquid from being sputtered outside the protective cover 4 through the cooperation of the negative pressure column 51.

(V) a step of,

The numerical control device 1 controls the cutting assembly and the displacement assembly and also controls the cooling assembly and the drying assembly which cooperate with the cutting assembly.

The cooling assembly comprises a liquid storage barrel 57, a delivery pump 58, a shunt tube 59, a conduit 60, a flow valve 61, a hose 62, a connecting tube 63, a clamping claw 64 and a mounting rod 65, wherein the liquid storage barrel 57, the delivery pump 58 and the shunt tube 59 are all arranged on a workbench 2, the liquid storage barrel 57, the delivery pump 58 and the shunt tube 59 are sequentially communicated through the conduit 60, a group of outlet grooves are formed in the tube body of the shunt tube 59, the flow valve 61 is arranged on the outlet grooves, the flow valve 61 is connected with the connecting tube 63 through the hose 62, a universal tube 66 and a spray head 67 are sequentially arranged at the other end of the connecting tube 63, fin plates 68 are respectively arranged on the rear end side walls of the right ends of the first cross arm 16 and the second cross arm 17, the bottom of the mounting rod 65 is fixedly connected with the fin plates 68 on the second cross arm 17, a rod body at the upper end of the mounting rod 65 is in sliding connection with the fin plates 68 on the first cross arm 16, the clamping claw 64 is detachably fixed on the mounting rod 65, and the connecting tube 63 is detachably fixedly mounted on the clamping claw 64.

Notably, the connecting tube 63 is a rigid tube.

It should be noted that the flexible pipes 62 are detachably connected with the outlet grooves in a sealing manner, so that a user can correspondingly set the number of flexible pipes 62 (i.e. the number of connecting pipes 63 and the number of spray heads 67) according to the number of metal workpieces installed in the protective cover 4, and in this embodiment, the number of spray heads 67 is equal to the number of metal workpieces (i.e. each metal workpiece is provided with one spray head 67), so as to ensure that the corresponding spray heads 67 spray cutting fluid at the cutting point where each metal workpiece contacts the guide wire 20.

The clamping jaw 64 is provided with the strip-shaped block 69, the side wall at one end of the strip-shaped block 69 is provided with the T-shaped sliding groove 70 in an inwards concave manner, the pipe body of the connecting pipe 63 is provided with the T-shaped sliding block 71 matched with the T-shaped sliding groove 70, the block body of the strip-shaped block 69 at the notch of the T-shaped through groove is inserted with the baffle 72, the strip-shaped block 69 is made of ferromagnetic metal materials, and the baffle 72 is made of magnetic materials, so that the reliability of the clamping jaw 64 and the connecting pipe 63 during fixed installation can be ensured on the premise of being convenient for quick assembly and disassembly; the claw tips of the holding claws 64 are provided with a lock bolt 73 and a lock nut 74 which are engaged, so that the stability of the mounting of the holding claws 64 on the mounting rod 65 can be improved.

(VI),

The drying component comprises an air compressor 75, a vortex tube 76, a cold air tube 77, a first cover 78 and a second cover 79, wherein the first cover 78 and the second cover 79 are detachably and fixedly installed on the first cross arm 16 and the second cross arm 17 respectively, the right end of the first cover 78 is close to the right end part of the first cross arm 16, the right end of the second cover 79 is close to the right end part of the second cross arm 17, a group of branch pipes which are communicated with the inside of the first cover 78 are symmetrically arranged at the top of the first cover 78, the branch pipes are communicated with the inside of the cold air tube 77, the other end of the cold air tube 77 is connected with the cold end of the vortex tube 76, the air inlet end of the vortex tube 76 is connected with the output end of the air compressor 75, and the air compressor 75 is arranged on the workbench 2.

It should be noted that, in the practical application process, rubber sealing gaskets are disposed at the inner wall where the first cover 78 contacts the first cross arm 16 and at the inner wall where the second cover 79 contacts the second cross arm 17, so that stability of installation between the first cover 78 and the first cross arm 16 and between the second cover 79 and the second cross arm 17 can be effectively improved, and meanwhile, waste cutting liquid sputtered on the metal workpiece can be effectively prevented from entering an inner space formed between the first cover 78 and the first cross arm 16, and in addition, waste cutting liquid sputtered on the metal workpiece can be effectively prevented from entering an inner space formed between the second cover 79 and the second cross arm 17.

In this way, cold air can be sprayed to the guide wire 20 in the second cover 79 through the cooperation of the air compressor 75 and the vortex tube 76, so that cutting fluid on the guide wire 20 in the second cover 79 is blown off and discharged through the liquid discharge tube 80, and meanwhile, the guide wire 20 with the temperature increased due to electric spark cutting can be cooled, so that the effective service life of the guide wire 20 is prolonged.

The inner wall of the lower end of the second cover 79 is in a slope shape with low left and high right, so that the cutting waste liquid in the second cover 79 can be effectively discharged, the lower end of the left end of the second cover 79 is provided with a liquid discharge pipe 80, and in the embodiment, the tail end of the liquid discharge pipe 80 is connected to the waste liquid barrel 49.

The working principle is as follows:

it should be noted that the covers of the liquid storage tank 57 and the waste liquid tank 49 are provided with pressure balance pipes for communicating the outside with the inside of the tank, so that the normal operation of the delivery pump 58 and the negative pressure pump 48 can be ensured.

It should be noted that, in this embodiment, the liquid level sensors controlled by the numerical control device 1 are disposed in the liquid storage barrel 57 and the waste liquid barrel 49, so that the numerical control device 1 can monitor the amounts of the solutions in the liquid storage barrel 57 and the waste liquid barrel 49 in real time through the liquid level sensors, thereby reminding a worker to fill the cutting solution into the liquid storage barrel 57 or pour the waste liquid in the waste liquid barrel 49 in time.

It should be noted that, in the present embodiment, the principle and the electrical connection structure of the multi-channel wire-cut electric discharge machine formed between the different metal workpieces and the guide wire 20 are the same as those of the reference documents mentioned in the background art, that is, the reference documents in the background art are the prior art for realizing the multi-channel wire-cut electric discharge machine according to the present invention.

In the first step, the worker injects a proper amount of cutting fluid into the liquid storage tank 57, and in addition, the worker can cover a matched cover at the take-up reel 5.

Secondly, a worker controls a travel motor 40 to work through the numerical control device 1, so that the base 3 is far away from the workbench 2, the worker opens a door plate 42, and a metal workpiece to be processed is installed inside the protective cover 4; note that, since the second cross arm 17 cannot move up and down, in order to minimize the length of the guide wire 20 at the portion perpendicular to the ground, it is necessary to mount the metal workpieces to be processed in order from the bottom to the top of the horizontal plate 44 having the lowest height inside the shield 4; in this embodiment, two limit screws 46 are connected to the same side of the metal workpiece.

Third, the worker closes the door panel 42 and then controls the stroke motor 40 to operate by the control device, so that the base 3 approaches the table 2 until the distance therebetween is a designated value.

Fourth, the worker connects the end of the liquid discharge tube 80 with the liquid discharge tube 49, and then the worker controls the second motor 15 to work through the numerical control device 1 so that the length of the guide wire 20 perpendicular to the ground is appropriate, that is, all metal workpieces to be processed in the protective cover 4 can be cut by the guide wire 20.

In the process, the numerical control device 1 monitors the tension change on the wire body of the guide wire 20 in real time through the pressure sensor, so that the three first motors 11 are automatically controlled to work to respectively adjust the heights of the three second guide wheels 19 in the vertical direction, and the tension value on the wire body is always maintained in a set range.

Fifth, the worker connects the hoses 62 having the same number as the number of the metal workpieces inside the shield 4 to the shunt tubes 59, then installs the holding claws 64 at the positions designated by the installation bars 65, installs the connecting tubes 63 on the holding claws 64, and then manually adjusts the bending degree of each universal tube 66, thereby ensuring that the cutting fluid at the spray positions of the spray heads 67 is opposite to the contact positions of the metal workpieces and the guide wires 20.

It is noted that in the fifth step, the flow valve 61 at the outlet groove of the connecting hose 62 which is not provided on the shunt 59 is closed.

It is to be noted that, in the fifth step described above, during the whole section of wire-cut electric discharge machining of the metal workpiece to be machined, the joint pipe 63, the holding claw 64, the mounting rod 65, the shower head 67, the bar-shaped block 69 and the insert are not brought into contact with the metal workpiece; i.e. only the guide wire 20 is in contact with the metal workpiece during the full section of wire cut electrical discharge machining.

In the sixth step, the worker connects the wire 20, the pulse power source, the numerical control device 1, the resistor, the current probe and the metal work to the same structure as in the reference mentioned in the background art. Since the guide wire 20 moves, the pulse power supply is electrically connected with the guide wire 20 by using the electric brush, and in order to prolong the service life of the electric brush, the electric brush is arranged on a corresponding driving assembly, and the driving assembly can drive the electric brush to do circular reciprocating linear motion relative to the direction perpendicular to the moving direction of the guide wire 20 (namely, the electric brush and the guide wire 20 are crossed in a cross shape).

Seventh, the worker inputs a program compiled in advance into the numerical control apparatus 1.

Eighth, a worker starts a program, and the numerical control device 1 controls the horizontal double-headed motor 23 and the longitudinal double-headed motor 24 in the shifting assembly to work, thereby controlling the metal workpiece to move horizontally relative to the guide wire 20; in the process, the numerical control device 1 also controls a pulse power supply to output pulse current, controls the rotating motor 35 to work so as to enable the guide wire 20 to move, controls the driving assembly to work so as to enable the electric brush to do reciprocating linear motion in the seventh step, controls the conveying pump 58 to work so as to enable the spray head 67 to spray cutting liquid to the corresponding cutting point, controls the negative pressure pump 48 to intensively pump out waste liquid in the protective cover 4, controls the air compressor 75 to enable waste liquid adhered to the surface of the guide wire 20 in the second cover 79 to be blown off (simultaneously cools the guide wire 20), and monitors the amounts of the solution in the liquid storage barrel 57 and the waste liquid barrel 49 in real time through the liquid level sensor by the numerical control device 1; the wire electric discharge machine is controlled by the numerical control device 1 to cut a metal workpiece.

The present invention is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present invention without departing from the technical content of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a multichannel wire cut electrical discharge machining device, includes from left to right numerical control device (1), workstation (2), base (3) and protection casing (4) that transversely set gradually, its characterized in that: a cutting assembly is arranged on the workbench (2), and a shifting assembly is arranged on the base (3);

the cutting assembly comprises a take-up pulley (5), a first adjusting plate (6) and a second adjusting plate (7) which are transversely arranged on a workbench (2) from left to right in sequence, a front end plate of the first adjusting plate (6) is inwards concavely provided with three first sliding grooves (8) with stroke directions perpendicular to the ground, first sliding blocks (9) matched with the first sliding grooves are respectively and slidingly connected in the first sliding grooves (8), first screw rods (10) with central axis perpendicular to the ground are respectively and rotatably connected in the first sliding grooves (8), threaded through grooves matched with the first screw rods (10) are respectively formed in the first sliding blocks (9), the first screw (10) is respectively driven to rotate by a first motor (11) corresponding to the top of the first adjusting plate (6), a second sliding groove (12) perpendicular to the ground in the stroke direction is formed in the front end plate surface of the second adjusting plate (7) in a recessed manner, a second sliding block (13) matched with the second sliding groove is slidingly connected in the second sliding groove (12), a second screw (14) perpendicular to the ground in the central axis is rotationally connected in the second sliding groove (12), a threaded through groove matched with the second screw (14) is formed in the second sliding block (13), the second screw (14) is driven to rotate by a second motor (15) arranged at the top of the second adjusting plate (7), the end face of the second sliding block (13) positioned outside the second sliding groove (12) is fixedly connected with a first cross arm (16), the front end plate surface of the second adjusting plate (7) close to the bottom of the second adjusting plate is provided with a second cross arm (17), the front end side wall surfaces of the first cross arm (16) and the second cross arm (17) are symmetrically provided with a group of first guide wheels (18), the end face of the first sliding block (9) positioned outside the first sliding groove (8) is provided with a second guide wheel (19), the projections of the first guide wheels (18) and the second guide wheels (19) on the ground are positioned on the same straight line, the wire collecting wheel (5) is wound with a plurality of circles of guide wires (20), one end of each guide wire (20) is fixed on the wire collecting wheel (5), and the other end of each guide wire (20) sequentially winds all the first guide wheels (18) and the second guide wheels (19) and then is fixed with the wire collecting wheel (5);

The shifting assembly comprises a transverse supporting plate (21), a longitudinal supporting plate (22), a transverse double-headed motor (23), a longitudinal double-headed motor (24), a transverse guide rod (25), a longitudinal guide rod (26), a transverse screw rod (27) and a longitudinal screw rod (28), wherein transverse guide bodies (29) are arranged at the front end and the rear end of the bottom of the transverse supporting plate (21) in a protruding mode, a pair of transverse driving bodies (30) are further arranged on the surface between the two transverse guide bodies (29) in a protruding mode with respect to longitudinal symmetry, the left end and the right end of the bottom of the longitudinal supporting plate (22) are provided with longitudinal guide bodies (31) in a protruding mode, a pair of longitudinal driving bodies (32) are further arranged on the surface between the two longitudinal guide bodies (31) in a symmetrical mode with respect to the transverse direction, the front end and the rear end of the top of the base (3) are respectively provided with transverse guide rods (25) in a protruding mode, corner blocks at the end of the transverse guide rod (25) are respectively fixed on the base (3), the left end and right end of the base (3) in a transverse region between the two transverse guide rods (25) and the middle of the motor (25), and the left end of the transverse supporting plate (23) are respectively provided with transverse double-headed screw rods (23) at the middle of the two ends of the transverse supporting plate (23) The right two ends are provided with longitudinal guide rods (26) with central axes along the longitudinal direction, corner blocks at the ends of the longitudinal guide rods (26) are fixed on a transverse support plate (21), the middle part of the top of the transverse support plate (21) in an area between the two longitudinal guide rods (26) is provided with a longitudinal double-headed motor (24), the longitudinal two ends of the longitudinal double-headed motor (24) are provided with longitudinal screw rods (28), the transverse guide bodies (29) and the longitudinal guide bodies (31) are respectively provided with round through grooves (33) matched with the transverse guide rods (25) and the longitudinal guide rods (26), and the transverse drive bodies (30) and the longitudinal drive bodies (32) are respectively provided with screw grooves (34) matched with the transverse screw rods (27) and the longitudinal screw rods (28);

The protective cover (4) is arranged in the middle of the top plate surface of the longitudinal supporting plate (22), and a fixing component is arranged in the protective cover (4);

the numerical control device (1) controls the cutting assembly and the shifting assembly and also controls a cooling assembly and a drying assembly which are matched with the cutting assembly.

2. A multi-channel wire cut electrical discharge machining device according to claim 1, wherein the wire (20) between the take-up reel (5) and the leftmost first guide wheel (18) of the second cross arm (17) is in a left-high right-low trend, and the wire (20) between the take-up reel (5) and the leftmost second guide wheel (19) of the first adjusting plate (6) is in a left-low right-high trend, and the second guide wheels (19) at both the left and right ends of the first adjusting plate (6) are vertically higher than the second guide wheel (19) in the middle of the first adjusting plate (6), and the rightmost second guide wheel (19) of the first adjusting plate (6) is vertically lower than the first guide wheel (18) on the first cross arm (16); the take-up pulley (5) is driven to rotate by a rotating motor (35) controlled by the numerical control device (1).

3. A multi-channel wire cut electrical discharge machining apparatus according to claim 1, wherein the shaft of the second guide wheel (19) in the middle of the first adjusting plate (6) is provided with a pressure sensor controlled by the numerical control device (1).

4. The multi-channel wire-cut electrical discharge machining device according to claim 1, wherein a pair of transverse track plates (36) are symmetrically arranged on the left side wall of the workbench (2) close to the bottom of the workbench, a travel groove (37) is formed in the top plate surface of the track plates (36) in an inwards concave manner, travel blocks (38) are respectively arranged at the front end and the rear end of the bottom of the base (3), the travel blocks (38) are respectively connected in a sliding manner in the corresponding travel grooves (37), racks (39) are respectively arranged on the outer side walls, which are close to each other and are parallel, of the two track plates (36), travel motors (40) controlled by the numerical control device (1) are respectively arranged at the front end and the rear end of the bottom of the base (3), and driving gears (41) at the tail ends of output shafts of the travel motors (40) are meshed with the corresponding racks (39).

5. The multi-channel wire-cut electric discharge machine according to claim 1, wherein the left and right ends of the protective cover (4) are provided with notches, the bottom of the notch at the left end of the protective cover (4) is lower than the second cross arm (17) in the vertical direction, the top of the protective cover (4) is in a completely open state, the notch at the right end of the protective cover (4) is symmetrically provided with a pair of door plates (42), and the outer side plate surfaces of the door plates (42) are provided with handles (43);

The fixing assembly comprises two groups of horizontal plates (44), wherein a group of mounting holes (45) are formed in each horizontal plate (44), the two groups of horizontal plates (44) are symmetrically arranged on the inner side walls of the front end and the rear end of the protective cover (4) respectively, a group of mounting holes (45) with the same central axis line are in a penetrating connection with the same limiting screw (46), and limiting nuts (47) with the same number as that of the horizontal plates (44) in the same group of horizontal plates (44) are arranged on the same limiting screw (46);

the protective cover (4) is also provided with a negative pressure component controlled by the numerical control device (1).

6. The multi-channel wire-cut electrical discharge machining device according to claim 5, wherein the negative pressure assembly comprises a negative pressure pump (48), a waste liquid barrel (49), a negative pressure pipe (50) and a negative pressure column (51), ring grooves (52) matched with the shapes of the bottoms of the negative pressure pump are formed in the protective cover (4), a group of air guide grooves (53) communicated with the ring grooves (52) are symmetrically formed in the bottom wall of the protective cover (4), the negative pressure column (51) is arranged at the notch of each groove of the guide wire (20), negative pressure holes (54) communicated with the air guide grooves (53) are uniformly formed in the column body of the negative pressure column (51), a discharge groove (55) communicated with the ring grooves (52) is formed in the outer side wall of the protective cover (4), the notch at the outer end of the discharge groove (55), the negative pressure pump (48) and the waste liquid barrel (49) are sequentially communicated through the negative pressure pipe (50), and the negative pressure pump (48) and the waste liquid barrel (49) are arranged on a carrier support plate (56) extending out of the outer side wall at the rear end of the base (3);

The horizontal plate (44), the limit screw and the limit screw (46) are all made of electric insulation materials.

7. The multi-channel wire cut electrical discharge machining device according to claim 1, wherein the cooling assembly comprises a liquid storage barrel (57), a delivery pump (58), a shunt tube (59), a conduit (60), a flow valve (61), a hose (62), a connecting tube (63), a clamping claw (64) and a mounting rod (65), wherein the liquid storage barrel (57), the delivery pump (58) and the shunt tube (59) are all arranged on the workbench (2), the liquid storage barrel (57), the delivery pump (58) and the shunt tube (59) are sequentially communicated through the conduit (60), a group of outlet grooves are formed in the tube body of the shunt tube (59), flow valves (61) are arranged in the outlet grooves, the flow valves (61) are connected with the connecting tube (63) through the hose (62), universal tubes (66) and spray heads (67) are sequentially arranged at the other ends of the connecting tube (63), a fin plate (68) is arranged on the rear side wall of the right end of the first cross arm (16), a fin plate (68) is arranged on the rear end side wall of the second cross arm (17), the bottom of the mounting rod (65) is fixedly connected with the fin plate (68) on the second cross arm (17) and the fin plate (68) is fixedly connected with the fin plate (65), the clamping claw (64) is detachably fixed on the mounting rod (65), and the connecting pipe (63) is detachably and fixedly mounted on the clamping claw (64).

8. The multichannel wire-cut electric discharge machine according to claim 7, wherein the clamping claws (64) are provided with strip-shaped blocks (69), a T-shaped sliding groove (70) is formed in the side wall of one end of each strip-shaped block (69) in an inward sunken mode, a T-shaped sliding block (71) matched with the T-shaped sliding groove (70) is arranged on the pipe body of the connecting pipe (63), and a baffle (72) is inserted into a block body of each strip-shaped block (69) at the notch of the T-shaped through groove;

the strip-shaped block (69) is made of ferromagnetic metal material, and the baffle (72) is made of magnetic material;

the tail ends of the claw pieces of the clamping claws (64) are respectively provided with a locking bolt (73) and a locking nut (74) which are matched.

9. The multi-channel wire-cut electrical discharge machining device according to claim 1, wherein the drying assembly comprises an air compressor (75), a vortex tube (76), a cold air tube (77), a first cover body (78) and a second cover body (79), the first cover body (78) and the second cover body (79) are detachably and fixedly installed on the first cross arm (16) and the second cross arm (17) respectively, the right end of the first cover body (78) is close to the right end of the first cross arm (16), the right end of the second cover body (79) is close to the right end of the second cross arm (17), a group of branch pipes which are communicated with the inside of the first cover body (78) are symmetrically arranged at the top of the first cover body, the branch pipes are communicated with the inside of the cold air tube (77), the other end of the cold air tube (77) is connected with the cold end of the vortex tube (76), the air inlet end of the vortex tube (76) is connected with the output end of the air compressor (75), and the air compressor (75) is arranged on a workbench (2).

10. The multi-channel wire electric discharge machine according to claim 9, wherein the inner wall of the lower end of the second cover (79) is in a slope shape with a lower left side and a higher right side, and the lower end of the left end of the second cover (79) is provided with a drain pipe (80).