Pipe electrode auxiliary type punching, threading and cutting integrated device and machining method thereof

Abstract

The invention discloses a pipe electrode auxiliary type punching, threading and cutting integrated device and a machining method thereof.The pipe electrode auxiliary type punching, threading and cutting integrated device comprises a lifting table A arranged on a machine tool Z-axis stand column, and a punching device is arranged on the lifting table A. The punching device comprises a pipe electrode used for punching machining; a wire feeding device for feeding an electrode wire into the tubular electrode is arranged on the lifting platform A and above the tubular electrode; a wire receiving device used for receiving the electrode wire is arranged on the machine tool Z-axis stand column and located below the pipe electrode; the electrolyte supply device is used for supplying electrolyte into the tubular electrode; the electrolyte sprayed at high pressure in the tubular electrode is used for blowing straight and guiding during threading of an internal electrode wire; the punching, threading and cutting integrated machine tool has the advantages that punching, threading and cutting integrated machining can be achieved, various clamping procedures are reduced, and the machining efficiency is improved; the punching and cutting machining efficiency is high, the machining precision is high, the quality of the machined surface is good, and various machining methods such as electric spark machining and electrolytic machining can be achieved at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of special processing, in particular to a tube electrode assisted punching, wire threading and cutting integrated device and a processing method thereof. Background Art

[0002] Closed contour ruled surface components are typical ruled surface component types, such as internal gear transmission structures, lubricating oil pump rotor slots, cycloidal pump inner and outer rotors, etc. Wire cutting is a common method, such as EDM wire cutting and electrolytic wire cutting. At present, slow wire EDM wire cutting is widely used in the processing of precision closed contour ruled surface components in the fields of aerospace, automotive engineering, etc.

[0003] Since the machining track contour of closed contour straight surface components is often inside the closed contour components, the current common method is to first use the EDM perforation processing technology on the EDM perforator to punch holes near the preset track. After the drilling is completed, the closed contour component is clamped on the EDM wire cutting machine for wire threading. After the wire threading is completed, wire cutting is performed. In recent years, slow-wire EDM wire cutting machines have gradually been equipped with automatic wire threading devices. Automatic wire threading often uses low-pressure water flow for wire threading, which often causes the wire to stick to the surface of the closed contour component and wire threading failure. In addition, the corresponding hole for threading usually needs to be larger to realize the automatic threading function. For closed contour components with small inner contour dimensions and small threading holes, manual threading is often required, which is time-consuming and inefficient.

[0004] With the increasing demand for ruled surface components in the aerospace and other fields, the demand for high-precision, high-surface quality closed contour components is increasing. If a series of processes such as automatic drilling, automatic threading and automatic cutting can be realized on a single machine tool, the process cost will be greatly reduced and production efficiency will be improved. At present, there are no reports of equipment and methods for realizing the above multi-process processing at home and abroad.

[0005] Patent publication number CN204430491U discloses an automatic wire threading and wiring device, which specifically discloses an upper guide, a lower guide, and a cutting mechanism. The upper and lower ends of the upper guide are provided with wire threading holes, the upper end of the cutting mechanism is also provided with an upper electrode wire feeding mechanism, and the lower end of the lower guide is also provided with a lower electrode wire feeding mechanism. The electrode wire feeding mechanism is used to feed the wire to the upper guide and the lower guide, and then the wire is collected by the lower electrode wire feeding mechanism. However, there is a need to use external equipment to punch holes in the closed contour component and then automatically thread the wire. Various clamping processes are cumbersome and complicated, and the processing efficiency is low, the processing accuracy is low, and the processing surface quality is poor. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the existing defects and provide a tube electrode assisted punching, wire threading and cutting integrated device and its processing method, wherein a closed contour component is punched by a tube electrode, and an electrode wire is guided and threaded by the tube electrode and the high-pressure electrolyte sprayed inside the tube electrode, and the closed contour component is cut by the electrode wire, thereby realizing integrated punching, wire threading and cutting processing, reducing various clamping procedures and improving processing efficiency; the punching efficiency is improved, the cutting processing efficiency is high, the processing accuracy is high and the processing surface quality is good, and multiple types of processing methods such as electric spark processing and electrolytic processing can be realized at the same time, which is flexible and convenient to use and can effectively solve the problems in the background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a tube-electrode-assisted punching, wire-threading and cutting integrated device and a processing method thereof, comprising a machine tool Z-axis column and a machine tool XY-axis slide provided on a machine tool base, a vertically slidable lifting platform A provided on the machine tool Z-axis column, a punching device provided on the lifting platform A, an electrolytic cell provided on the machine tool XY-axis slide, a workpiece fixture provided on the electrolytic cell, the punching device comprising a lifting plate provided on the lifting platform A, a wire guide nozzle fixedly provided on the lifting plate, a wire threading hole for threading the wire is provided on the top of the wire guide nozzle, a rotary joint connected to the internal spray chamber of the wire guide nozzle at the bottom end of the wire guide nozzle, a tube electrode fixedly embedded in the rotary joint, and a rotary drive mechanism drivable to rotate is also provided on the lifting plate. A rotating motor for rotating the joint; a wire feeding device for feeding the electrode wire into the wire threading hole is provided on the lifting platform A above the wire guide nozzle, and the electrode wire passed into the wire guide nozzle passes into the tube cavity of the tube electrode; a wire receiving device for receiving the electrode wire is provided on the Z-axis column of the machine tool below the tube electrode; it also includes an electrolyte supply device, the electrolyte supply device includes a liquid storage tank, the liquid storage tank is connected to a jet pump through a connecting pipe, and the outlet end of the jet pump is connected to the wire guide nozzle through a liquid supply pipe; the tube electrode is used for drilling processing, and the high-pressure electrolyte sprayed in the tube electrode is used to blow straight and guide the internal electrode wire when threading; it also includes a pulse power supply, and the tube electrode and the electrode wire are both electrically connected to the negative pole of the pulse power supply.

[0008] Furthermore, the wire feeding device includes a wire storage drum, a guide wheel 1, a guide wheel 2, a power-drawing wheel, a brake wheel, a clamping wheel and a wire guide sheet on the lifting platform A. The electrode wire on the wire storage drum is guided by the guide wheel 1, the guide wheel 2, the power-drawing wheel and the brake wheel in sequence. The clamping wheel and the brake wheel are arranged opposite to each other. The wire guide sheet is located below the gap between the clamping wheel and the brake wheel. A guide wheel 3 is arranged below the brake wheel. A wire guide channel 1 that is adapted to the outer diameter of the electrode wire is vertically opened in the wire guide sheet. The clamping wheel and the brake wheel guide the electrode wire The wire is transported downward into the wire guide channel one, and the wire guide piece is provided with an arc-shaped clearance groove connected with the wire guide channel one at the position corresponding to the guide wheel three, and the guide wheel three is nested in the arc-shaped clearance groove and is used to compress the electrode wire that passes through the wire guide channel one; the lifting platform A is provided with a driving motor A for driving the wire storage drum to rotate and a driving motor B for driving the brake wheel to rotate; the electrode wire is electrically connected to the negative pole of the pulse power supply through the current-drawing wheel and the conductor; the lifting platform A is provided with a wire cutter below the corresponding wire guide piece.

[0009] Furthermore, the punching device also includes a servo push rod vertically arranged on the lifting platform A, the telescopic end of the servo push rod faces downward and is fixedly connected to the lifting plate; a wire feeding guide sleeve is fixedly arranged in the wire threading hole of the wire guide nozzle, and a wire guide channel 2 adapted to the outer diameter of the electrode wire is vertically opened in the wire feeding guide sleeve, the top of the wire guide channel 2 is a conical expansion opening 1, and a sealing gasket is fixedly arranged on the wire feeding guide sleeve at a position corresponding to the conical expansion opening 1; the bottom end of the spray chamber in the wire guide nozzle is a conical shrinkage structure, and the end of the wire feeding guide sleeve passes through the conical shrinkage of the spray chamber; a driving pulley is connected to the rotating shaft of the rotating motor, a driven pulley is connected to the rotating joint, and a transmission belt is arranged between the driving pulley and the driven pulley; the tube electrode is electrically connected to the negative pole of the pulse power supply through the rotating joint and the wire.

[0010] Furthermore, the wire connecting device includes a wire connecting box, a wire guide corner channel adapted to the outer diameter of the electrode wire is provided between the top wall of the wire connecting box and one of its side walls, a wire connecting guide sleeve is vertically provided at the wire inlet at the top of the wire guide corner channel, a wire guide channel three adapted to the outer diameter of the electrode wire is provided in the wire connecting guide sleeve, and the top of the wire guide channel three is a conical expansion two; a lower wire guide nozzle coaxially arranged therewith is fixedly provided on the periphery of the wire connecting guide sleeve, a through hole is provided on the top of the lower wire guide nozzle, and the outer diameter of the through hole is larger than the outer diameter of the wire connecting guide sleeve, and the bottom end of the lower wire guide nozzle is an open knot Structure; a accommodating chamber is opened on the inner side of the wire connecting box at the corner of the corresponding wire guide corner channel, and a guide pressure wheel is rotatably connected in the accommodating chamber, and the guide pressure wheel is used to press the electrode wire at the corner of the wire guide corner channel; a wire guide tube is horizontally arranged at the wire outlet at the side end of the wire guide corner channel, and the inner diameter of the wire guide tube is adapted to the diameter of the electrode wire; a fixed box is arranged on the end side of the wire guide tube, and a pair of wire collecting wheels are arranged on the fixed box at the position corresponding to the wire guide tube, and the wire collecting wheels are used to clamp and convey the electrode wire, and a driving motor C for driving the wire collecting wheels to rotate is arranged in the fixed box.

[0011] Furthermore, a supporting column is vertically arranged at the bottom end of the lifting platform A, and a lifting platform B which can slide vertically is connected to the supporting column through a motor screw linear drive mechanism B; the wire connecting device is arranged on the lifting platform B, and the wire connecting box and the fixed box are both fixedly arranged on the lifting platform B, and a waste wire collection box is arranged on the wire outlet side of the lifting platform B corresponding to the wire collecting wheel; a motor screw linear drive mechanism A which can drive the lifting platform A to slide vertically is arranged on the Z-axis column of the machine tool.

[0012] Furthermore, the lifting platform A is also provided with a tensioning device for tensioning the electrode wire, the tensioning device includes a fixed ear plate fixed on the lifting platform A, an electro-hydraulic push rod is fixed on the fixed ear plate, the telescopic end of the electro-hydraulic push rod passes through the fixed ear plate and is connected to a tensioning wheel bracket, a tensioning wheel is rotatably connected to the tensioning wheel bracket, the tensioning wheel abuts against the electrode wire between the guide wheel one and the guide wheel two, and a spring is provided on the telescopic rod of the electro-hydraulic push rod between the fixed ear plate and the tensioning wheel bracket.

[0013] Furthermore, a liquid storage tank A and a liquid storage tank B are provided in the liquid storage tank, and the liquid outlet of the liquid storage tank A and the liquid outlet of the liquid storage tank B are connected through two connecting pipes 1 and a three-way solenoid valve A, and the other pipe interface of the three-way solenoid valve A is connected to the inlet end of the jet pump through a connecting pipe 2; the electrolytic cell is connected to a return pipe, and a filter is connected to the return pipe; the return pipe is respectively connected to the liquid storage tank A and the liquid storage tank B through a three-way solenoid valve B and two connecting pipes 2; the liquid supply pipe is connected to an injection pipe through a three-way solenoid valve C, and the other end of the injection pipe is connected to the electrolytic cell.

[0014] To achieve the above object, the present invention also provides the following technical solution: a method for processing a tube-electrode-assisted punching, wire-threading and cutting integrated device, comprising the above-mentioned tube-electrode-assisted punching, wire-threading and cutting integrated device, and also comprising the following processing steps: Before the closed profile component is processed, the closed profile component is fixed on the workpiece fixture, the positive electrode of the pulse power supply is electrically connected to the closed profile component, and the tube electrode is connected to the negative electrode of the pulse power supply; the electrolyte supply device is turned on to supply the electrolyte in the liquid storage tank A to the wire guide nozzle through the jet pump, and the electrolyte in the wire guide nozzle rushes into the inside of the tube electrode and is ejected from the lower end thereof, and the rotating motor drives the tube electrode to rotate; Process 1: The drive control system moves the closed contour component to the bottom of the tube electrode, and the CNC machine tool drives the tube electrode to gradually approach the surface of the closed contour component until the machining gap distance is reached. The drive control system enables the tube electrode to perform high-speed drilling on the closed contour component and penetrate the closed contour component, thereby realizing the drilling process of the closed contour component; Process 2: The wire feeding device quickly feeds the electrode wire into the inlet at the upper end of the tube electrode, while the electrolyte supply device continuously flushes the high-pressure jet electrolyte into the tube electrode and continuously sprays it out from the lower end. The wire feeding device continuously feeds the electrode wire into the tube electrode, and uses the high-pressure jet electrolyte inside the tube electrode to accurately guide the electrode wire out of the tube electrode and then feed it into the wire connecting device at the lower end. The electrode wire is fed into the wire collecting wheel of the wire connecting device, and the electrode wire is tensioned by the tensioning device to realize the automatic wire threading process inside the closed contour component. Process three: The drive control system causes the tube electrode to be pulled out from the hole of the closed contour component, and at the same time cuts off the electrical connection between the tube electrode and the negative electrode of the pulse power supply, and connects the electrode wire to the negative electrode of the pulse power supply, and the electrolyte supply device supplies the electrolyte in the liquid storage tank B to the electrolytic cell through the jet pump and the injection tube until the closed contour component is immersed in the electrolyte of the electrolytic cell; the wire feeding device and the wire connecting device cause the electrode wire to continuously circulate from top to bottom; the drive control system causes the closed contour component to be cut according to the processing trajectory, and during the processing, the jet pump and the liquid supply tube supply liquid to the tube electrode, and the electrolyte sprayed from the tube electrode is used to disperse the electrolysis products in the processing area and the processing gap, thereby realizing the cutting processing process of the closed contour component.

[0015] Furthermore, the tube electrode punching process in process one and the electrode wire cutting process in process three are both electrospark machining, that is, the tube electrode is electrospark punched and the electrode wire is electrospark cut, which corresponds to the processing of closed contour components with high processing efficiency, high processing precision and a recast layer on the surface; at this time, the electrolyte inside the liquid reservoir A and the liquid reservoir B are both deionized water.

[0016] Furthermore, the tube electrode punching process in process one and the electrode wire cutting process in process three are both electrolytic processing, that is, the tube electrode is electrolytically punched and the electrode wire is electrolytically cut, which corresponds to the processing of closed contour components with low processing efficiency, high processing accuracy, high surface quality and no recast layer requirements; at this time, the electrolyte inside the liquid reservoir A and the liquid reservoir B is any one of sodium nitrate solution, sodium chloride solution, sodium nitrate and sodium chloride composite solution, ethylene glycol sodium chloride solution, and ethylene glycol sodium nitrate solution.

[0017] Furthermore, the tube electrode punching process in process one is electrolytic electric spark machining or electric spark machining; when the tube electrode is electrolytic electric spark drilling, the electrolyte in reservoir A is a low conductivity salt solution, and when the tube electrode is electric spark drilling, the electrolyte in reservoir A is deionized water; the electrode wire cutting process in process three is electrolytic cutting or electrolytic electric spark cutting, and the electrolyte in reservoir B is any one of sodium nitrate solution, sodium chloride solution, sodium nitrate and sodium chloride composite solution, ethylene glycol sodium chloride solution, and ethylene glycol sodium nitrate solution.

[0018] Furthermore, in the process three, during the cutting process, the electrode wire is sprayed with electrolyte periodically, and the spraying period is divided into a spraying time and a spraying interval time, and the spraying time is shorter than the spraying interval time.

[0019] Compared with the prior art, the present invention has the following beneficial effects: 1. The closed contour component is punched through the tube electrode, and the electrode wire is guided and threaded by the tube electrode and the high-pressure electrolyte sprayed inside it, and the closed contour component is cut through the electrode wire. The device realizes the integrated processing of punching, threading and cutting. After the closed contour component is guided and threaded by the tube electrode, there is no need to reposition it. The CNC machine tool can directly drive the closed contour component to cut according to the processing trajectory, reducing various clamping processes and improving processing efficiency. 2. During the drilling process, the tube electrode is rotated and the electrolyte is continuously sprayed inside, so that the electrolyte between the tube electrode and the closed contour component can flow and renew quickly, dispersing the electrolytic products in the processing area and the processing gap, thereby improving the drilling efficiency; 3. During the cutting process, the electrolyte is sprayed intermittently through the tube electrode. The electrolyte sprayed by the tube electrode is used to disperse the electrolytic products in the processing area and the processing gap, which can significantly improve the cutting efficiency, processing accuracy and surface quality; 4. The present invention can simultaneously realize multiple types of processing methods such as electrospark machining and electrolytic machining, can meet the processing requirements of different closed contour components, and is flexible and convenient to use; 5. Precise wire guiding and threading of tube electrodes can realize small and micro-sized inner contour trajectory processing of closed contour straight-grained surface components, and precise wire guiding and threading functions of small and micro-sized holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a side view of the Z-axis column of the machine tool of the present invention; Figure 3 This is a schematic diagram of the sliding connection between the support column and the lifting platform B of the present invention; Figure 4 This is a structural schematic diagram of the lifting platform A of the present invention; Figure 5 It is a schematic structural diagram of the wire feeding device of the present invention; Figure 6 It is a schematic diagram of the structure of the tensioning device of the present invention; Figure 7 It is a schematic diagram of the structure of the guide wire sheet of the present invention; Figure 8 It is a schematic diagram of the structure of the punching device of the present invention; Fig. 9 This is a schematic diagram of the connection structure between the wire guide nozzle and the tube electrode of the present invention; Fig.10 This is a schematic diagram of the internal structure of the wire guide nozzle of the present invention; Fig.11 This is a schematic diagram of the structure of the wire feeding guide sleeve of the present invention; Fig.12 It is a structural schematic diagram of the wire connecting device of the present invention; Fig.13 It is a schematic diagram of the wire receiving of the wire connection box and the wire connection guide sleeve according to the present invention; Fig.14 This is a schematic diagram of the internal structure of the wire splicing box of the present invention; Fig.15 It is a schematic diagram of the structure of the electrolyte supply device of the present invention; Fig.16 It is a schematic diagram of the punching and wire threading process of the present invention.

[0021] In the figure: 1, machine tool base; 2, machine tool Z-axis column; 21, lifting platform A; 211, pulse power supply; 22, lifting platform B; 221, waste wire collection box; 23, motor screw linear drive mechanism A; 24, motor screw linear drive mechanism B; 25, support column; 3. Wire feeding device; 31. Wire storage drum; 32. Guide wheel 1; 33. Guide wheel 2; 34. Electric wheel; 35. Braking wheel; 36. Clamping wheel; 37. Wire guide plate; 371. Wire guide channel 1; 372. Arc clearance groove; 38. Guide wheel 3; 39. Tensioning device; 391. Fixed ear plate; 392. Electro-hydraulic push rod; 393. Tensioning wheel bracket; 394. Tensioning wheel; 395. Spring; 4. Punching device; 41. Servo push rod; 42. Lifting plate; 43. Wire guide nozzle; 431. Wire threading hole; 432. Spray chamber; 44. Rotary joint; 441. Driven pulley; 45. Tube electrode; 46. Wire feeding guide sleeve; 461. Wire guide channel II; 462. Conical expansion port I; 463. Sealing gasket; 47. Rotating motor; 471. Driving pulley; 5. Wire connection device; 51. Wire connection box; 511. Wire guide corner channel; 512. Accommodating chamber; 513. Guide pressure wheel; 52. Lower wire guide nozzle; 53. Wire connection guide sleeve; 531. Wire guide channel three; 532. Conical expansion port two; 54. Wire guide tube; 55. Fixed box; 56. Wire collection wheel; 6. Machine tool XY axis slide; 61. Electrolytic cell; 7. Workpiece fixture; 8. Electrolyte supply device; 81. Jet pump; 82. Liquid storage tank A; 83. Liquid storage tank B; 84. Liquid supply pipe; 85. Liquid return pipe; 86. Filter; 87. Liquid injection pipe; 9. Wire cutter; 10. Electrode wire; 11. Closed profile component. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Embodiment 1

[0023] See also Figure 1-16 The present invention provides a technical solution: a tube electrode assisted punching, threading and cutting integrated device, comprising a machine tool Z-axis column 2 and a machine tool XY-axis slide 6 provided on a machine tool base 1, an electrolytic cell 61 provided on the machine tool XY-axis slide 6, and a workpiece fixture 7 provided on the electrolytic cell 61; a vertically slidable lifting platform A21 is provided on the machine tool Z-axis column 2, and a motor screw linear drive mechanism A23 that can drive the lifting platform A21 to slide vertically is provided on the machine tool Z-axis column 2, and the lifting platform A punching device 4 is provided on A21; the punching device 4 comprises a lifting plate 42 provided on the lifting platform A21, a wire guide nozzle 43 is fixedly provided on the lifting plate 42, a wire guide nozzle 43 is provided at the top end of the wire guide nozzle 43 with a wire threading hole 431 for threading the wire, a rotating joint 44 connected to an internal spray chamber 432 of the wire guide nozzle 43 is rotatably connected at the bottom end thereof, a tube electrode 45 is fixedly nested in the rotating joint 44, and a rotating motor 47 capable of driving the rotating joint 44 to rotate is also provided on the lifting plate 42; The punching device 4 also includes a servo push rod 41 vertically arranged on the lifting platform A21, the telescopic end of the servo push rod 41 faces downward and is fixedly connected to the lifting plate 42; a wire feeding guide sleeve 46 is fixedly arranged in the wire threading hole 431 of the wire guide nozzle 43, and a wire guide channel 461 adapted to the outer diameter of the electrode wire 10 is vertically opened in the wire feeding guide sleeve 46, the top of the wire guide channel 461 is a conical expansion opening 462, and a sealing gasket 463 is fixedly arranged on the wire feeding guide sleeve 46 at a position corresponding to the conical expansion opening 462; the bottom end of the spray chamber 432 in the wire guide nozzle 43 is a conical shrinking structure, and the end of the wire feeding guide sleeve 46 passes through the conical shrinking part of the spray chamber 432; a driving pulley 471 is connected to the rotating shaft of the rotating motor 47, a driven pulley 441 is connected to the rotating joint 44, and a transmission belt is provided between the driving pulley 471 and the driven pulley 441; A wire feeding device 3 for feeding the electrode wire 10 into the wire threading hole 431 is provided on the lifting platform A21 above the wire guide nozzle 43, and the electrode wire 10 passing through the wire guide nozzle 43 passes through the tube cavity of the tube electrode 45; the wire feeding device 3 includes a wire storage drum 31, a guide wheel 1 32, a guide wheel 2 33, an electric lead wheel 34, a brake wheel 35, a clamping wheel 36 and a wire guide sheet 37 provided on the lifting platform A21, the electrode wire 10 on the wire storage drum 31 is guided by the guide wheel 1 32, the guide wheel 2 33, the electric lead wheel 34 and the brake wheel 35 in sequence, the clamping wheel 36 and the brake wheel 35 are arranged opposite to each other, and the wire guide sheet 37 is located between the clamping wheel 36 and the brake wheel 35 Below the gap between the electrodes, a guide wheel 38 is provided below the brake wheel 35, a guide wire channel 371 which is adapted to the outer diameter of the electrode wire 10 is vertically provided in the guide wire sheet 37, and the clamping wheel 36 and the brake wheel 35 transport the electrode wire 10 downward into the guide wire channel 371, and the guide wire sheet 37 is provided with an arc-shaped clearance groove 372 which is connected to the guide wire channel 371 at the position corresponding to the guide wheel 38, and the guide wheel 38 is nested in the arc-shaped clearance groove 372 and is used to compress the electrode wire 10 which passes through the guide wire channel 371; a driving motor A for driving the wire storage barrel 31 to rotate and a driving motor B for driving the brake wheel 35 to rotate are provided on the lifting platform A21; A support column 25 is vertically arranged at the bottom end of the lifting platform A21, and a vertically slidable lifting platform B22 is connected to the support column 25 through a motor screw linear drive mechanism B24; a wire connection device 5 for receiving the electrode wire 10 is arranged on the lifting platform B22; the wire connection device 5 includes a wire connection box 51 arranged on the lifting platform B22, and a wire guide corner channel 511 adapted to the outer diameter of the electrode wire 10 is opened between the top wall and one side wall of the wire connection box 51, and the wire guide corner channel 511 is provided. A wire guide sleeve 53 is vertically provided at the wire inlet at the top of the channel 511, and a wire guide channel 3 531 adapted to the outer diameter of the electrode wire 10 is provided in the wire guide sleeve 53, and the top of the wire guide channel 3 531 is a conical expansion 2 532; a lower wire guide nozzle 52 coaxially arranged therewith is fixedly provided on the periphery of the wire guide sleeve 53, and a through hole is provided at the top of the lower wire guide nozzle 52, and the outer diameter of the through hole is greater than the outer diameter of the wire guide sleeve 53, and the bottom end of the lower wire guide nozzle 52 is an open structure; A receiving chamber 512 is provided inside the wire connection box 51 at the corner of the corresponding wire guide corner channel 511, and a guide pressure wheel 513 is rotatably connected inside the receiving chamber 512. The guide pressure wheel 513 is used to press the electrode wire 10 at the corner of the wire guide corner channel 511; a wire guide tube 54 is horizontally provided at the wire outlet at the side end of the wire guide corner channel 511, and the inner diameter of the wire guide tube 54 is adapted to the diameter of the electrode wire 10; a fixed box 55 is provided at the end side of the wire guide tube 54, and the fixed box 55 is provided at the end side of the wire guide tube 54. A pair of wire collecting wheels 56 are provided at positions corresponding to the wire guide tubes 54 on the lifting platform 5. The wire collecting wheels 56 are used to clamp and convey the electrode wire 10, and a driving motor C for driving the wire collecting wheels 56 to rotate is provided in the fixed box 55; a waste wire collecting box 221 is provided on the lifting platform B22 at the wire outlet side corresponding to the wire collecting wheels 56; a wire cutter 9 is provided on the lifting platform A21 below the corresponding wire guide sheet 37; the wire cutter 9 is used to cut the waste wire, and the waste wire collecting box 221 is used to collect the waste wire; The lifting platform A21 is also provided with a tensioning device 39 for tensioning the electrode wire 10, the tensioning device 39 comprises a fixed ear plate 391 fixedly provided on the lifting platform A21, an electro-hydraulic push rod 392 fixedly provided on the fixed ear plate 391, a telescopic end of the electro-hydraulic push rod 392 penetrates the fixed ear plate 391 and is connected to a tensioning wheel bracket 393, a tensioning wheel 394 is rotatably connected to the tensioning wheel bracket 393, the tensioning wheel 394 abuts against the electrode wire 10 between the guide wheel 1 32 and the guide wheel 2 33, and a spring 395 is provided on the telescopic rod of the electro-hydraulic push rod 392 between the fixed ear plate 391 and the tensioning wheel bracket 393; It also includes an electrolyte supply device 8, which includes a liquid storage tank, which is connected to a jet pump 81 through a connecting pipe, and the outlet end of the jet pump 81 is connected to the guide wire nozzle 43 through a liquid supply pipe 84; a liquid storage tank A82 and a liquid storage tank B83 are arranged in the liquid storage tank, and the liquid outlet of the liquid storage tank A82 and the liquid outlet of the liquid storage tank B83 are connected through two connecting pipes 1 and a three-way electromagnetic valve A, and the other pipe interface of the three-way electromagnetic valve A is connected to the inlet end of the jet pump 81 through a connecting pipe 2; the electrolytic cell 61 is connected to a return pipe 85, and a filter 86 is connected to the return pipe 85; the return pipe 85 is respectively connected to the liquid storage tank A82 and the liquid storage tank B83 through a three-way electromagnetic valve B and two connecting pipes 2; the liquid supply pipe 84 is connected to a liquid injection pipe 87 through a three-way electromagnetic valve C, and the other end of the liquid injection pipe 87 is connected to the electrolytic cell 61; The tube electrode 45 is used for drilling processing, and the high-pressure electrolyte sprayed in the tube electrode 45 is used to blow and guide the electrode wire 10 inside it when threading; it also includes a pulse power supply 211, and the tube electrode 45 is electrically connected to the negative pole of the pulse power supply 211 through a rotating joint 44 and a wire, and the electrode wire 10 is electrically connected to the negative pole of the pulse power supply 211 through a current-drawing wheel 34 and a wire.

[0024] Working principle: Fix the closed contour member 11 on the workpiece fixture 7, drive the closed contour member 11 to move to the bottom of the punching device 4 through the machine tool XY axis slide 6, drive the lifting platform A21 to descend through the motor screw linear drive mechanism A23 until the tube electrode 45 is close to the surface of the closed contour member 11, and electrically connect the positive electrode of the pulse power supply 211 to the workpiece fixture 7; The lifting plate 42 and the wire guide nozzle 43 are lifted by contracting the servo push rod 41, so that the conical expansion opening 462 at the top of the wire feeding guide sleeve 46 fits with the bottom of the wire guide sheet 37, and the wire storage barrel 31 is driven by the driving motor A to rotate and release the electrode wire 10, and the electrode wire 10 is guided by the guide wheel 1 32, the guide wheel 2 33, the current drawing wheel 34, the brake wheel 35, the clamping wheel 36 and the guide wheel 38, and at the same time, the brake wheel 35 is driven by the driving motor B to rotate so that the electrode wire 10 in the wire guide channel 1 371 passes into the wire guide channel 2 461 of the wire feeding guide sleeve 46; the servo push rod 41 is extended to make the tube electrode 45 close to the surface of the closed contour component 11 again, and at the same time, the wire storage barrel 31 and the brake wheel 35 rotate to release the electrode wire 10 so that it descends synchronously with the wire guide nozzle 43; The electrolyte in the liquid storage tank A82 is supplied to the wire guide nozzle 43 through the jet pump 81, and the electrolyte in the wire guide nozzle 43 is ejected from the lower end of the tube electrode 45 after passing through the rotary joint 44. The rotating motor 47 causes the driving pulley 471 to drive the driven pulley 441 and the rotary joint 44 to rotate, and the rotary joint 44 drives the tube electrode 45 to rotate, so that the tube electrode 45 is connected to the negative pole of the pulse power supply 211, and the lifting platform A21 drives the tube electrode 45 to continue to descend until the processing gap distance is reached, and the closed contour component 11 is processed by high-speed electric spark or electrolytic drilling through the tube electrode 45, and the tube electrode 45 penetrates the closed contour component 11 to achieve drilling of the closed contour component 11; the electrolyte in the electrolytic tank 61 flows back to the liquid storage tank A82 through the return pipe 85, and the refluxed electrolyte is filtered by the filter 86; The lifting platform B22 is driven upward by the motor screw linear drive mechanism B24 until the wire guide sleeve 53 on the wire box 51 is close to the bottom end of the tube electrode 45; the wire storage barrel 31 is driven by the driving motor A to rotate and release the electrode wire 10, and the brake wheel 35 is driven by the driving motor B to rotate so that the electrode wire 10 is fed into the tube electrode 45. At the same time, the high-pressure jet electrolyte is continuously flushed into the tube electrode 45 and continuously ejected from its lower end by the jet pump 81. The wire feeding device 3 continuously feeds the electrode wire 10 into the tube electrode 45 and uses The electrode wire 10 is accurately led out from the inside of the tube electrode 45 by the electrolyte of the high-pressure jet flow inside the tube electrode 45. The electrode wire 10 led out from the inside of the tube electrode 45 enters the wire guide corner channel 511 in the wire connection box 51 through the wire guide channel 3 531. The electrode wire 10 passes through the wire guide tube 54 and passes between the wire collection wheels 56 at the upper and lower ends through the guidance of the guide pressure wheel 513 and the wire guide channel 3 531. The tensioning wheel 394 is stretched by the electro-hydraulic push rod 392 to tension the electrode wire 10; thereby completing the automatic threading of the electrode wire 10. The lifting plate 42 and the tube electrode 45 are driven upward by the contraction of the servo push rod 41, so that the tube electrode 45 is pulled out from the hole of the closed contour component 11, and the electrical connection between the tube electrode 45 and the negative electrode of the pulse power supply 211 is cut off, and the electrode wire 10 is connected to the negative electrode of the pulse power supply 211, and all interfaces of the three-way electromagnetic valve B are closed, and the electrolyte in the liquid storage tank B83 is injected into the electrolytic tank 61 through the jet pump 81 and the injection pipe 87 until the closed contour component 11 is immersed in the electrolyte of the electrolytic tank 61; through the wire storage barrel 31 and the brake wheel 3 5 and the wire collecting wheel 56 rotate in coordination to make the electrode wire 10 continuously circulate from top to bottom, and the closed contour component 11 is subjected to electric spark or electrolytic cutting processing by the electrode wire 10; the closed contour component 11 is driven by the XY axis slide 6 of the machine tool to perform cutting processing according to the processing trajectory, and during the processing, the liquid is supplied to the tube electrode 45 through the jet pump 81 and the liquid supply pipe 84, and the electrolyte sprayed from the tube electrode 45 is used to disperse the electrolytic products in the processing area and the processing gap, so as to improve the cutting processing efficiency and realize the cutting processing of the closed contour component 11.

[0025] The tube electrode assisted punching, wire threading and cutting integrated device disclosed in the present embodiment performs punching processing on the closed contour component 11 through the tube electrode 45, and uses the tube electrode 45 and the electrolyte sprayed by high pressure inside it to guide the electrode wire 10 to thread the wire, and cuts the closed contour component 11 through the electrode wire 10. The device realizes the integrated processing of punching, wire threading and cutting, reduces various clamping procedures, and improves the processing efficiency. During the punching processing, the tube electrode 45 rotates and the electrolyte is continuously sprayed inside it, so that the electrolyte between the tube electrode 45 and the closed contour component 11 flows and renews rapidly, dispersing the electrolytic products in the processing area and the processing gap, thereby improving the punching efficiency. During the cutting processing, the tube electrode 45 sprays the electrolyte intermittently, and the electrolyte sprayed by the tube electrode 45 is used to disperse the electrolytic products in the processing area and the processing gap, thereby improving the cutting processing efficiency, processing accuracy and surface quality. It can simultaneously realize multiple types of processing methods such as electric spark processing and electrolytic processing, and is flexible and convenient to use. Embodiment 2

[0026] See also Figure 1-16 The present invention provides a technical solution: a processing method of a tube-electrode-assisted punching, threading and cutting integrated device, comprising the above-mentioned tube-electrode-assisted punching, threading and cutting integrated device, and also comprising the following processing steps: Before the processing of the closed profile component 11 begins, the closed profile component 11 is fixed on the workpiece fixture 7, the positive electrode of the pulse power supply 211 is electrically connected to the closed profile component 11, and the tube electrode 45 is connected to the negative electrode of the pulse power supply 211; the electrolyte supply device 8 is turned on to supply the electrolyte in the liquid storage tank A82 to the wire guide nozzle 43 through the jet pump 81, and the electrolyte in the wire guide nozzle 43 rushes into the tube electrode 45 and is ejected from the lower end thereof, and the rotating motor 47 drives the tube electrode 45 to rotate; the outer diameter of the tube electrode 45 is 0.1 mm to 10 mm; Process 1: The driving control system moves the closed profile component 11 to below the tube electrode 45, and the driving control system makes the tube electrode 45 gradually approach the surface of the closed profile component 11 until the processing gap distance is reached, and the closed profile component 11 is punched at high speed by the tube electrode 45 and penetrates the closed profile component 11, thereby realizing the punching process of the closed profile component 11; Process 2: The wire feeding device 3 quickly feeds the electrode wire 10 into the upper inlet of the tube electrode 45, and at the same time, the electrolyte supply device 8 continuously flushes the high-pressure jet electrolyte into the tube electrode 45 and continuously sprays it out from the lower end thereof, and the electrolyte pressure of the high-pressure jet is greater than 1 MPa. The wire feeding device 3 continuously feeds the electrode wire 10 into the tube electrode 45, and uses the high-pressure jet electrolyte inside the tube electrode 45 to accurately guide the electrode wire 10 from the inside of the tube electrode 45 and then feed it into the wire connecting device 5 at the lower end, and the electrode wire 10 is fed into the wire collecting wheel 56 of the wire connecting device 5, and the electrode wire 10 is tensioned by the tensioning device 39, so as to realize the automatic wire threading process inside the closed contour component 11; Process three: the drive control system causes the tube electrode 45 to be pulled out from the hole of the closed contour component 11, and at the same time cuts off the electrical connection between the tube electrode 45 and the negative electrode of the pulse power supply 211, and connects the electrode wire 10 to the negative electrode of the pulse power supply 211, and the electrolyte supply device 8 supplies the electrolyte in the liquid storage tank B83 to the electrolytic cell 61 through the jet pump 81 and the injection tube 87 until the closed contour component 11 is immersed in the electrolyte of the electrolytic cell 61; the wire feeding device 3 and the wire connecting device 5 cause the electrode wire 10 to continuously circulate from top to bottom; the drive control system causes the closed contour component 11 to be cut according to the processing trajectory, and during the processing, the jet pump 81 and the liquid supply tube 84 are used to supply liquid to the tube electrode 45, and the tube electrode 45 sprays the electrolyte periodically, and the spray time is less than the spray interval time, and the electrolyte sprayed by the tube electrode 45 is used to disperse the electrolysis products in the processing area and the processing gap, so as to realize the cutting process of the closed contour component 11.

[0027] The punching process of the tube electrode 45 in process one and the cutting process of the electrode wire 10 in process three are both electrospark machining, that is, the tube electrode 45 is electrospark punched and the electrode wire 10 is electrospark cut; at this time, the electrolyte inside the liquid storage tank A82 and the liquid storage tank B83 are both deionized water.

[0028] This embodiment corresponds to the processing of a closed profile component 11 with high processing efficiency, high processing accuracy, and a recast layer on the surface; Embodiment 3

[0029] See also Figure 1-16 Compared with the second embodiment, the punching process of the tube electrode 45 in the first process and the cutting process of the electrode wire 10 in the third process are both electrolytic processing, that is, the tube electrode 45 is electrolytically punched, and the electrode wire 10 is electrolytically cut; at this time, the electrolyte inside the liquid storage tank A82 and the liquid storage tank B83 is any one of sodium nitrate solution, sodium chloride solution, sodium nitrate and sodium chloride composite solution, ethylene glycol sodium chloride solution, and ethylene glycol sodium nitrate solution.

[0030] This embodiment corresponds to the machining of the closed profile component 11 with low machining efficiency, high machining accuracy, high surface quality and no requirement for a recast layer. Embodiment 4

[0031] See also Figure 1-16 Compared with the second embodiment, the punching process of the tube electrode 45 in the first process is electrolytic electric spark machining or electric spark machining; when the tube electrode 45 is electrolytic electric spark drilling, the electrolyte in the liquid reservoir A82 is a low conductivity salt solution, and when the tube electrode 45 is electric spark drilling, the electrolyte in the liquid reservoir A82 is deionized water; the cutting process of the electrode wire 10 in the third process is electrolytic cutting or electrolytic electric spark cutting, and the electrolyte in the liquid reservoir B83 is any one of sodium nitrate solution, sodium chloride solution, sodium nitrate and sodium chloride composite solution, ethylene glycol sodium chloride solution, and ethylene glycol sodium nitrate solution.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tube electrode assisted punching, threading and cutting integrated device, comprising a machine tool Z-axis column (2) and a machine tool XY-axis slide (6) provided on a machine tool base (1), a vertically slidable lifting platform A (21) provided on the machine tool Z-axis column (2), a punching device (4) provided on the lifting platform A (21), an electrolytic cell (61) provided on the machine tool XY-axis slide (6), and a workpiece fixture (7) provided on the electrolytic cell (61), characterized in that: The punching device (4) comprises a lifting plate (42) provided on a lifting platform A (21), a wire guide nozzle (43) being fixedly provided on the lifting plate (42), a wire threading hole (431) for threading wire being provided at the top of the wire guide nozzle (43), a rotary joint (44) being rotatably connected to the bottom end of the wire guide nozzle (43) and being connected to an internal spray chamber (432), a tube electrode (45) being fixedly embedded in the rotary joint (44), and a rotary motor (47) being provided on the lifting plate (42) for driving the rotary joint (44) to rotate; a wire feeding device (3) for feeding an electrode wire (10) into the wire threading hole (431) is provided on the lifting platform A (21) above the wire guide nozzle (43), and the electrode wire (10) passing through the wire guide nozzle (43) passes through the electrode wire (10) to the wire threading hole (431). The tube electrode (45) is in the tube cavity; a wire receiving device (5) for receiving the electrode wire (10) is provided on the Z-axis column (2) of the machine tool below the tube electrode (45); the electrolyte supply device (8) also includes an electrolyte supply device (8), the electrolyte supply device (8) includes a liquid storage tank, the liquid storage tank is connected to a jet pump (81) through a connecting pipe, and the outlet end of the jet pump (81) is connected to the wire guide nozzle (43) through a liquid supply pipe (84); the tube electrode (45) is used for drilling processing, and the high-pressure electrolyte sprayed in the tube electrode (45) is used to blow straight and guide the electrode wire (10) inside the tube electrode (45) when threading; the electrode wire (10) is used for cutting processing; and a pulse power supply (211) is also included, and the tube electrode (45) and the electrode wire (10) are both electrically connected to the negative pole of the pulse power supply (211).

2. The tube electrode assisted punching, wire threading and cutting integrated device according to claim 1, characterized in that: The wire feeding device (3) comprises a wire storage drum (31), a guide wheel 1 (32), a guide wheel 2 (33), an electric wheel (34), a brake wheel (35), a clamping wheel (36) and a wire guide sheet (37) arranged on a lifting platform A (21); the electrode wire (10) on the wire storage drum (31) is guided by the guide wheel 1 (32), the guide wheel 2 (33), the electric wheel (34) and the brake wheel (35) in sequence; the clamping wheel (36) and the brake wheel (35) are arranged opposite to each other; the wire guide sheet (37) is located at the lower part of the gap between the clamping wheel (36) and the brake wheel (35). A guide wheel (38) is provided below the brake wheel (35), a guide wire channel (371) adapted to the outer diameter of the electrode wire (10) is vertically opened in the guide wire sheet (37), and the clamping wheel (36) and the brake wheel (35) transport the electrode wire (10) downward into the guide wire channel (371), and the guide wire sheet (37) is provided with an arc-shaped clearance groove (372) connected to the guide wire channel (371) at a position corresponding to the guide wheel (38), and the guide wheel (38) is nested in the arc-shaped clearance groove (372) and is used to compress the electrode wire (10) penetrating into the guide wire channel (371). 71); the lifting platform A (21) is provided with a driving motor A for driving the wire storage drum (31) to rotate and a driving motor B for driving the brake wheel (35) to rotate; the electrode wire (10) is electrically connected to the negative pole of the pulse power supply (211) through the electric pulley (34) and the wire; the lifting platform A (21) is provided with a wire cutter (9) below the corresponding wire guide sheet (37); the lifting platform A (21) is also provided with a tensioning device (39) for tensioning the electrode wire (10), and the tensioning device (39) includes a A fixed ear plate (391) is fixedly provided, an electro-hydraulic push rod (392) is fixedly provided on the fixed ear plate (391), a telescopic end of the electro-hydraulic push rod (392) passes through the fixed ear plate (391) and is connected to a tension wheel bracket (393), a tension wheel (394) is rotatably connected to the tension wheel bracket (393), the tension wheel (394) abuts against an electrode wire (10) between a first guide wheel (32) and a second guide wheel (33), and a spring (395) is provided on the telescopic rod of the electro-hydraulic push rod (392) between the fixed ear plate (391) and the tension wheel bracket (393).

3. The tube electrode assisted punching, wire threading and cutting integrated device according to claim 1, characterized in that: The punching device (4) further comprises a servo push rod (41) vertically arranged on the lifting platform A (21), the telescopic end of the servo push rod (41) facing downward and fixedly connected to the lifting plate (42); a wire feeding guide sleeve (46) is fixedly arranged in the wire threading hole (431) of the wire guide nozzle (43), a wire guide channel 2 (461) adapted to the outer diameter of the electrode wire (10) is vertically opened in the wire feeding guide sleeve (46), the top end of the wire guide channel 2 (461) is a conical expansion opening 1 (462), and the position on the wire feeding guide sleeve (46) corresponding to the conical expansion opening 1 (462) is A sealing gasket (463) is fixedly provided at the nozzle (43); the bottom end of the spray chamber (432) in the wire guide nozzle (43) is a conical shrinkage structure, and the end of the wire feeding guide sleeve (46) passes through the conical shrinkage of the spray chamber (432); a driving pulley (471) is connected to the rotating shaft of the rotating motor (47), a driven pulley (441) is connected to the rotating joint (44), and a transmission belt is provided between the driving pulley (471) and the driven pulley (441); the tube electrode (45) is electrically connected to the negative pole of the pulse power supply (211) through the rotating joint (44) and the wire.

4. The tube electrode assisted punching, wire threading and cutting integrated device according to claim 1, characterized in that: The wire connection device (5) comprises a wire connection box (51), a wire guide corner channel (511) adapted to the outer diameter of the electrode wire (10) is provided between the top wall and one side wall of the wire connection box (51), a wire connection guide sleeve (53) is vertically provided at the wire inlet at the top end of the wire guide corner channel (511), a wire guide channel 3 (531) adapted to the outer diameter of the electrode wire (10) is provided in the wire connection guide sleeve (53), and the top end of the wire guide channel 3 (531) is a conical expansion opening 2 (532); a fixed outer periphery of the wire connection guide sleeve (53) is provided with a coaxially arranged A lower wire guide nozzle (52) is disposed, the top of the lower wire guide nozzle (52) is provided with a through hole, and the outer diameter of the through hole is larger than the outer diameter of the wire connecting guide sleeve (53), and the bottom of the lower wire guide nozzle (52) is an open structure; a receiving chamber (512) is provided on the inner side of the wire connecting box (51) at the corner of the corresponding wire guide corner channel (511), and a guide pressing wheel (513) is rotatably connected in the receiving chamber (512), and the guide pressing wheel (513) is used to press the electrode wire (10) at the corner of the wire guide corner channel (511); the wire guide corner channel (511) is provided with a guide roller (513) for pressing the electrode wire (10) at the corner of the wire guide corner channel (511); A wire guide tube (54) is horizontally arranged at the wire outlet at the side end of the lifting platform A (21), and the inner diameter of the wire guide tube (54) is adapted to the diameter of the electrode wire (10); a fixed box (55) is arranged at the end side of the wire guide tube (54), and a pair of wire collecting wheels (56) are arranged at positions corresponding to the wire guide tube (54) on the fixed box (55), and the wire collecting wheels (56) are used to clamp and convey the electrode wire (10), and a driving motor C for driving the wire collecting wheels (56) to rotate is arranged in the fixed box (55); a supporting column (25) is vertically arranged at the bottom end of the lifting platform A (21), and a supporting column (25) is arranged at the bottom end of the lifting platform A (21). A vertically slidable lifting platform B (22) is connected to the support column (25) via a motor screw linear drive mechanism B (24); the wire connection device (5) is arranged on the lifting platform B (22), and the wire connection box (51) and the fixed box (55) are both fixedly arranged on the lifting platform B (22); a waste wire collection box (221) is arranged on the lifting platform B (22) at the wire outlet side corresponding to the wire receiving wheel (56); and a motor screw linear drive mechanism A (23) that can drive the lifting platform A (21) to slide vertically is arranged on the Z-axis column (2) of the machine tool.

5. The tube electrode assisted punching, wire threading and cutting integrated device according to claim 1, characterized in that: The liquid storage box is provided with a liquid storage tank A (82) and a liquid storage tank B (83); the liquid outlet of the liquid storage tank A (82) and the liquid outlet of the liquid storage tank B (83) are connected via two connecting pipes 1 and a three-way electromagnetic valve A; the other pipe interface of the three-way electromagnetic valve A is connected to the inlet end of the jet pump (81) via a connecting pipe 2; the electrolytic cell (61) is connected to a liquid return pipe (85), and the liquid return pipe (85) is connected to a filter (86); the liquid return pipe (85) is respectively connected to the liquid storage tank A (82) and the liquid storage tank B (83) via a three-way electromagnetic valve B and two connecting pipes 2; the liquid supply pipe (84) is connected to a liquid injection pipe (87) via a three-way electromagnetic valve C, and the other end of the liquid injection pipe (87) is connected to the electrolytic cell (61).

6. A processing method of a tube electrode assisted punching, wire threading and cutting integrated device, characterized in that: The invention comprises a tube electrode assisted punching, threading and cutting integrated device as claimed in any one of claims 1 to 5, and further comprises the following processing steps: Before machining the closed profile component (11), the closed profile component (11) is fixed on a workpiece fixture (7), the positive electrode of the pulse power supply (211) is electrically connected to the closed profile component (11), and the tube electrode (45) is connected to the negative electrode of the pulse power supply (211); the electrolyte supply device (8) is turned on to allow the electrolyte in the liquid storage tank A (82) to be supplied to the wire guide nozzle (43) through the jet pump (81), the electrolyte in the wire guide nozzle (43) is flushed into the tube electrode (45) and ejected from the lower end thereof, and the rotary motor (47) drives the tube electrode (45) to rotate; Process 1: the driving control system moves the closed profile component (11) to below the tube electrode (45), the driving control system makes the tube electrode (45) gradually approach the surface of the closed profile component (11) until the processing gap distance is reached, and the closed profile component (11) is punched at high speed by the tube electrode (45) and penetrates the closed profile component (11), thereby realizing the punching process of the closed profile component (11); Process 2: The wire feeding device (3) quickly feeds the electrode wire (10) into the upper inlet of the tube electrode (45), while the electrolyte supply device (8) continuously flushes the high-pressure jet electrolyte into the tube electrode (45) and continuously sprays it out from the lower end thereof. The wire feeding device (3) continuously feeds the electrode wire (10) into the tube electrode (45), and uses the high-pressure jet electrolyte inside the tube electrode (45) to accurately guide the electrode wire (10) out of the tube electrode (45) and then feed it into the wire connecting device (5) at the lower end. The electrode wire (10) is fed into the wire collecting wheel (56) of the wire connecting device (5), and the electrode wire (10) is tensioned by the tensioning device (39), thereby realizing the automatic wire threading process inside the closed contour component (11); Process 3: The drive control system causes the tube electrode (45) to be withdrawn from the hole of the closed contour member (11), and at the same time, the electrical connection between the tube electrode (45) and the negative electrode of the pulse power supply (211) is cut off, and the electrode wire (10) is connected to the negative electrode of the pulse power supply (211), and the electrolyte in the liquid storage tank B (83) is supplied to the electrolytic tank (61) through the electrolyte supply device (8) through the jet pump (81) and the injection pipe (87) until the closed contour member (11) is immersed in the electrolytic tank (61); the wire feeding device (3) and the wire connecting device (5) enable the electrode wire (10) to continuously circulate from top to bottom; the driving control system enables the closed contour component (11) to be cut according to the processing trajectory. During the processing, liquid is supplied to the tube electrode (45) through the jet pump (81) and the liquid supply pipe (84). The electrolyte ejected from the tube electrode (45) is used to disperse the electrolytic products in the processing area and the processing gap, thereby realizing the cutting process of the closed contour component (11).

7. The processing method of the tube-electrode-assisted punching, wire-threading and cutting integrated device according to claim 6, characterized in that: The tube electrode (45) punching process in process one and the electrode wire (10) cutting process in process three are both electrospark machining, corresponding to the machining of a closed contour component (11) with high machining efficiency, high machining accuracy and a recast layer on the surface; at this time, the electrolyte inside the liquid storage tank A (82) and the liquid storage tank B (83) are both deionized water.

8. The processing method of the tube-electrode-assisted punching, wire-threading and cutting integrated device according to claim 6, characterized in that: The tube electrode (45) punching process in process one and the electrode wire (10) cutting process in process three are both electrolytic processing, corresponding to the processing of closed contour components (11) with low processing efficiency, high processing accuracy, high surface quality and no recast layer requirement; at this time, the electrolyte inside the liquid reservoir A (82) and the liquid reservoir B (83) is any one of sodium nitrate solution, sodium chloride solution, sodium nitrate and sodium chloride composite solution, ethylene glycol sodium chloride solution, and ethylene glycol sodium nitrate solution.

9. The processing method of the tube-electrode-assisted punching, wire-threading and cutting integrated device according to claim 6, characterized in that: The punching process of the tube electrode (45) in the process one is electrolytic electric spark machining or electric spark machining; when the tube electrode (45) is electrolytic electric spark drilling, the electrolyte in the liquid reservoir A (82) is a low-conductivity salt solution, and when the tube electrode (45) is electric spark drilling, the electrolyte in the liquid reservoir A (82) is deionized water; the cutting process of the electrode wire (10) in the process three is electrolytic cutting or electrolytic electric spark cutting, and the electrolyte in the liquid reservoir B (83) is any one of sodium nitrate solution, sodium chloride solution, sodium nitrate and sodium chloride composite solution, ethylene glycol sodium chloride solution, and ethylene glycol sodium nitrate solution.

10. The processing method of the tube electrode assisted punching, wire threading and cutting integrated device according to claim 6, characterized in that: In the process three, during the cutting process, the electrode wire (10) of the tube electrode (45) sprays the electrolyte in a periodic manner, and the spraying period is divided into a spraying time and a spraying interval time, and the spraying time is shorter than the spraying interval time.

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