Electric spark four-axis cutting device and method

Abstract

The invention discloses an electric spark four-axis cutting device and method, and relates to the field of industrial metal part machining, the electric spark four-axis cutting device comprises a supporting base, a workpiece adjusting device is arranged on the supporting base, a tension adjusting device is arranged on one side of the supporting base, and a lifting stand column is arranged between the workpiece adjusting device and the tension adjusting device; a tool plate is slidably arranged on the lifting stand column, a lifting driving motor matched with the tool plate is arranged at the top of the lifting stand column, a second electrode bar is arranged at the top of one side of the tool plate, and a first electrode bar is matched with the bottom of one side of the tool plate. A first spool driving motor and a second spool driving motor in the tension adjusting device are matched, and an electrode wire in the control device is tightened to extrude a supporting rod to enable a first conductor and a second conductor to be in contact to control paying off and adjust the tightness of the electrode wire, so that the tightness of the electrode wire can be accurately adjusted, and the electrode wire is prevented from being damaged due to overlarge tension; the cutting quality and the service life of the wire electrode are ensured.

Description

Technical Field

[0001] The present invention relates to the field of industrial metal part processing, and specifically to an electric discharge four-axis cutting device and method. Background Art

[0002] In modern manufacturing, the processing precision and efficiency of metal materials play a crucial role in product quality and production efficiency. With the rapid development of high-end manufacturing fields such as aerospace and precision instruments, higher requirements are put forward for the cutting processing of metal workpieces. Traditional cutting methods gradually show limitations when facing workpieces with complex shapes and high-precision requirements. Electric discharge cutting technology, with its advantages such as non-contact processing and the ability to process high-hardness materials, has been widely used in the field of metal processing. However, existing electric discharge cutting devices and methods still have room for optimization to better meet the continuously upgraded manufacturing requirements.

[0003] Currently, common electric discharge cutting equipment focuses more on the cutting mode of a single electrode wire in terms of structural design and function implementation. The equipment usually consists of a basic support structure, an electrode wire drive system, and a workpiece fixing device.

[0004] However, in the existing electric discharge cutting technology, the tension control of the electrode wire is not precise enough, which easily leads to the breakage of the electrode wire or a decrease in cutting precision, affecting the processing quality and efficiency. The limitation of workpiece position adjustment makes it difficult to process workpieces with complex shapes, restricting the application range of the equipment. Moreover, the lack of an effective residue cleaning and recycling mechanism, the residues generated during cutting will affect the cutting effect and the service life of the equipment. At the same time, this single electrode wire cutting method has low efficiency and cannot meet the needs of large-scale production. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide an electric discharge four-axis cutting device and method to solve the problems of inaccurate electrode wire tension control, insufficient residue cleaning and recycling, and low cutting efficiency in the existing technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: an electric discharge four-axis cutting device, including a support base, a workpiece adjustment device is provided on the support base, a tension adjustment device is provided on one side of the support base on the support base, a lifting column is provided between the workpiece adjustment device and the tension adjustment device, a tooling plate is slidably provided on the lifting column, a lifting drive motor is provided at the top of the lifting column in cooperation with the tooling plate, a second electrode rod is provided at the top of one side of the tooling plate, the bottom of one side of the tooling plate is matched with a first electrode rod, four winding spindles are symmetrically provided on both sides of the first electrode rod and the second electrode rod on the tooling plate, an electrode wire is wound in the winding spindle, the tension adjustment device is provided in cooperation with the winding spindle, the tension adjustment device includes a support frame, a wire take-up barrel and a wire pay-off barrel are rotatably fixed on the support frame, a second wire shaft drive motor is provided on the support frame, a first wire shaft drive motor is provided on the support frame in cooperation with the wire take-up barrel, a first wire wheel mounting frame is provided on the support frame in cooperation with the wire take-up barrel, a second support wheel is provided on the first wire wheel mounting frame, a second wire wheel mounting frame is provided on the support frame in cooperation with the wire pay-off barrel, a first support wheel is provided on the second wire wheel mounting frame, and a first wire guiding wheel and a second wire guiding wheel are provided on the tooling plate in cooperation with the electrode wire.

[0007] By adopting the above technical solutions, multi-layer winding of the electrode wire is realized, so as to perform multi-layer cutting on the workpiece simultaneously.

[0008] The present invention is further provided that a residue cleaning device is provided between the four winding spindles on the tooling plate, the residue cleaning device includes a workpiece cleaning plate, a plurality of slots are opened on the workpiece cleaning plate, a limiting wire is vertically penetrated through the workpiece cleaning plate, the limiting wire is arranged to be hollow, and a plurality of holes are opened on the limiting wire.

[0009] By adopting the above technical solutions, the limiting wire is guided through the slots opened on the workpiece cleaning plate.

[0010] The present invention is further provided that the workpiece adjustment device includes a second translation platform, a second drive motor is provided at one end of the second translation platform in cooperation with it, a first translation platform is provided on the top of the second translation platform, a first drive motor is provided at one end of the first translation platform in cooperation with it, and a tooling table is provided on the top of the second translation platform.

[0011] By adopting the above technical solutions, the platform is controlled by the motor, so as to realize the movement of the platform in the X and Y axes, and then process the workpiece.

[0012] The present invention is further configured such that a control device is provided below the bottoms of a number of wire winding spindles on the tooling plate. The control device includes a pair of transmission shafts. A support rod is provided between the pair of transmission shafts on the tooling plate. A synchronous frame is rotatably provided on the transmission shafts. The other end of the synchronous frame is rotatably connected to the support rod. A groove is formed on the tooling plate in cooperation with the support rod. One end of the support rod is slidably provided in its groove. A first conductor is provided at one end of the support rod within the groove. A second conductor is provided at the top of the groove in cooperation with the first conductor. A return spring is provided between the second conductor and the support rod.

[0013] By adopting the above technical solution, the monitoring of the tension is realized. When the tension is too large, the wire pay-off barrel is controlled to pay off wire to adjust the tension.

[0014] The present invention is further configured such that a guide rod is provided on the tooling plate in cooperation with the residue cleaning device. A guide motor is provided on one side of the tooling plate in cooperation with the guide rod.

[0015] By adopting the above technical solution, the guide rod is controlled to rotate by the guide motor, thereby controlling the position of the residue cleaning device.

[0016] The present invention is further configured such that the tension adjusting device further includes a wire take-up guide pulley and a wire pay-off guide pulley. A guide plate is provided on the support frame in cooperation with the wire take-up guide pulley and the wire pay-off guide pulley. A stepping motor is provided on the support frame in cooperation with the guide plate.

[0017] By adopting the above technical solution, the position of the guide plate is controlled by the stepping motor, thereby controlling the position of the electrode wire within the tension adjusting device to ensure the quality of wire take-up and wire pay-off.

[0018] The present invention is further configured such that a liquid recovery device is provided at the bottom of the tooling plate and the residue cleaning device. The liquid recovery device includes a reflux device. A number of limit wires extend to the bottom of the reflux device to form a loop. A liquid pump is provided at the bottom of the reflux device in cooperation with the number of limit wires. A number of guide pipes are provided at the bottom of the reflux device in cooperation with the number of limit wires.

[0019] By adopting the above technical solution, the movement of the liquid within the limit wires is realized. At the same time, the liquid pressure is adjusted by the liquid pump to achieve a better cleaning effect.

[0020] The present invention is further configured such that a residue collection device is provided on the top of the tooling plate in cooperation with the residue cleaning device. The residue collection device includes a collection tank. The collection tank is provided in cooperation with a number of limit wires. The limit wires penetrate through the collection tank. A number of openings are formed on the collection tank in cooperation with the limit wires. A partition is provided on one side of the collection tank close to the limit wires. A magnet is provided on the side of the partition away from the limit wires.

[0021] By adopting the above technical solution, the collection of magnetic metals in the residue is realized.

[0022] The present invention also provides an electric discharge four-axis cutting method, and the steps are as follows:

[0023] Step 1: Before starting, the operator pulls out the electrode wire from the wire pay-off reel, winds it around the tension adjusting device, winds it around the winding main shaft for multiple turns, and then passes through the tension adjusting device again, and then winds it up and recovers it by the wire take-up reel.

[0024] Step 2: When starting, place the workpiece on the tooling table, adjust the tooling plate to a suitable position, control the guiding motor to move the residue cleaning device to a specified position, and turn on the residue cleaning device.

[0025] Step 3: Turn on the first electrode rod and the second electrode rod to start cutting the workpiece, and control the first driving motor, the second driving motor and the guiding motor to move synchronously to complete the cutting of the workpiece.

[0026] In summary, the present invention mainly has the following beneficial effects:

[0027] 1. The device of the present invention cooperates with the first wire shaft driving motor and the second wire shaft driving motor in the tension adjusting device, and controls the electrode wire to be tightened and extrude the support rod through the control device to make the first conductor and the second conductor contact to control the wire pay-off, adjust the tightness of the electrode wire, so as to realize the precise adjustment of the tightness of the electrode wire, prevent the electrode wire from being damaged due to excessive tension, and ensure the cutting quality and the service life of the electrode wire;

[0028] 2. In the actual use of the present invention, the workpiece is placed on the tooling table, the first and second driving motors drive the first and second translation platforms to move, the guiding motor controls the guiding rod to drive the residue cleaning device to move, and the liquid flows out from the limit line to clean the impurities during cutting. At this time, the dirty is recycled, so as to realize the flexible adjustment of the workpiece position, the precise cleaning of the impurities generated by cutting and the recycling of the dirty, optimize the cutting environment, and improve the cutting efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 It is a side view of the tooling plate structure of the present invention;

[0031] Figure 3 It is a schematic diagram of the tension adjusting device of the present invention;

[0032] Figure 4 It is a schematic diagram of a partial structure of the present invention;

[0033] Figure 5 It is a schematic diagram of the back of the overall structure of the present invention;

[0034] Figure 6 Schematic diagram of the tooling plate structure of the present invention;

[0035] Figure 7 Schematic diagram of the workpiece cleaning plate structure of the present invention;

[0036] Figure 8 Schematic diagram of the residue collection device structure of the present invention;

[0037] Figure 9 Schematic diagram of the liquid recovery device structure of the present invention.

[0038] In the figure: 1, support base; 2, first driving motor; 3, first translation platform; 4, second driving motor; 5, second translation platform; 6, tooling table; 7, transmission shaft; 8, winding main shaft; 9, first electrode rod; 10, second electrode rod; 11, tooling plate; 12, first wire guiding pulley; 13, lifting column; 14, lifting driving motor; 15, second wire guiding pulley; 16, first wire spool driving motor; 17, first supporting wheel; 18, wire collecting guiding pulley; 19, first wire wheel mounting frame; 20, stepping motor; 21, wire collecting barrel; 22, second wire spool driving motor; 23, second wire wheel mounting frame; 24, support frame; 25, guiding plate; 26, wire releasing barrel; 27, second supporting wheel; 28, collecting groove; 29, opening; 30, first conductor; 31, support rod; 32, synchronization frame; 33, guiding motor; 34, guiding rod; 35, workpiece cleaning plate; 36, spring; 37, second conductor; 38, partition board; 39, limiting wire; 40, slotted opening; 41, magnet; 42, reflux device; 43, guiding pipe; 44, liquid pump; 45, wire releasing guiding pulley. Specific embodiments

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0040] Next, the embodiments of the present invention will be described according to the overall structure of the present invention.

[0041] Electrical discharge four-axis cutting device and method, such as Figure 1 , Figure 3 , Figure 4 , Figure 5As shown in the figure, it includes a support base 1. On one side of the support base 1, a tension adjustment device is arranged. Between the workpiece adjustment device and the tension adjustment device, there is a lifting column 13. A tooling plate 11 is slidably arranged on the lifting column 13. At the top of the lifting column 13, a lifting drive motor 14 is arranged in cooperation with the tooling plate 11. At the top of one side of the tooling plate 11, a second electrode rod 10 is arranged. At the bottom of one side of the tooling plate 11, it is matched with a first electrode rod 9. On the tooling plate 11, four winding main shafts 8 are symmetrically arranged on both sides of the first electrode rod 9 and the second electrode rod 10. Electrode wires are wound in the winding main shafts 8. Combining with the attached drawings, in this application, the top wire is released from the tension adjustment device and wound around the winding main shafts 8 for multiple turns, so as to form multiple spaced electrode wire surfaces. The workpiece contacts the electrode wires from one side, so as to quickly slice the workpiece. At the same time, through such a setting in this application, when cutting, both ends of the metal workpiece are cut simultaneously, preventing the problem of workpiece deformation caused by uneven heat;

[0042] Specifically, the tension adjustment device is arranged in cooperation with the winding main shaft 8. The tension adjustment device includes a support frame 24. A wire collecting barrel 21 and a wire releasing barrel 26 are rotatably fixed on the support frame 24. A first wire wheel mounting frame 19 is arranged on the support frame 24 in cooperation with the wire collecting barrel 21. A second support wheel 27 is arranged on the first wire wheel mounting frame 19. A second wire wheel mounting frame 23 is arranged on the support frame 24 in cooperation with the wire releasing barrel 26. A first support wheel 17 is arranged on the second wire wheel mounting frame 23. Through the tooling plate 11, a first wire releasing guide wheel 12 and a second wire releasing guide wheel 15 are arranged in cooperation with the electrode wire. Among them, multiple turns of electrode wires are wound on the wire collecting barrel 21 and the wire releasing barrel 26. The electrode wire is released from the wire releasing barrel 26, passes through the first support wheel 17, then is wound around the first wire releasing guide wheel 12, and then is wound on the winding main shaft 8. Through the cooperation of the first support wheel 17 and the first wire releasing guide wheel 12, the electrode wire is effectively supported. After the electrode wire is wound around the winding main shaft 8 for multiple turns, it is connected to the wire collecting barrel 21 under the traction of the second wire releasing guide wheel 15, completing the closed-loop connection of the electrode wire. At the same time, a second wire shaft drive motor 22 is arranged on the support frame 24 in cooperation, and a first wire shaft drive motor 16 is arranged on the support frame 24 in cooperation with the wire collecting barrel 21. During actual use, through the cooperation between the first wire shaft drive motor 16 and the second wire shaft drive motor 22, the wire releasing barrel 26 and the wire collecting barrel 21 are controlled, so as to adjust the tightness of the electrode wire and adjust it according to different actual use requirements;

[0043] The tension adjustment device further includes a wire take-up guide pulley 18 and a wire pay-off guide pulley 45. A guide plate 25 is arranged on the support frame 24 to cooperate with the wire take-up guide pulley 18 and the wire pay-off guide pulley 45. A stepping motor 20 is arranged on the support frame 24 to cooperate with the guide plate 25. First, the wire take-up guide pulley 18 and the wire pay-off guide pulley 45 support the initial positions of the electrode wires on the wire take-up barrel 21 and the wire pay-off barrel 26, so as to ensure the wire outlet quality. At the same time, the stepping motor 20 controls the movement of the guide plate 25, thereby driving the movement of the wire take-up guide pulley 18 and the wire pay-off guide pulley 45, and then adjusting them according to the winding requirements of the wire take-up barrel 21 and the wire pay-off barrel 26.

[0044] Further, referring to Figure 1 , Figure 2 , Figure 6 , a control device is arranged below the bottoms of several winding main shafts 8 on the tooling plate 11. The control device intelligently judges the tightness of the electrode wire. Specifically, the control device includes a pair of transmission shafts 7. A support rod 31 is arranged between the pair of transmission shafts 7 on the tooling plate 11. A synchronous frame 32 is rotatably arranged on the transmission shaft 7. The other end of the synchronous frame 32 is rotatably connected to the support rod 31. A groove is formed on the tooling plate 11 to cooperate with the support rod 31. One end of the support rod 31 is slidably arranged in its groove. A first conductor 30 is arranged at one end of the support rod 31 in the groove. A second conductor 37 is arranged at the top of the groove to cooperate with the first conductor 30. A return spring 36 is arranged between the second conductor 37 and the support rod 31. During actual use, when the electrode wire is wound, it passes through the bottom of the support rod 31. When the overall electrode wire becomes tight, it will squeeze the movably arranged support rod 31, causing it to move upward, thereby driving the first conductor 30 to move towards the second conductor 37. When the two come into contact, the first wire spool driving motor 16 is controlled to rotate, and then the wire pay-off operation is carried out to prevent the electrode wire from being damaged due to excessive tension.

[0045] Further, referring to Figure 1 , a workpiece adjustment device is arranged on the support base 1. The workpiece adjustment device includes a second translation platform 5. A second driving motor 4 is arranged at one end of the second translation platform 5 to cooperate with it. A first translation platform 3 is arranged at the top of the second translation platform 5. A first driving motor 2 is arranged at one end of the first translation platform 3 to cooperate with it. A tooling table 6 is arranged at the top of the second translation platform 5. During actual use, the workpiece is placed on the tooling table 6. By the operation of the first driving motor 2 and the second driving motor 4, the first translation platform and the second translation platform are driven to move, thereby driving the workpiece to perform translational movement in the X and Y directions, achieving the effect of adjusting the workpiece position according to different requirements;

[0046] On the basis of the above structure, referring to Figures 7-9, a residue cleaning device is arranged between the four wire winding spindles 8 on the tooling plate 11. The residue cleaning device includes a workpiece cleaning plate 35. A plurality of slots 40 are formed in the workpiece cleaning plate 35. A limiting wire 39 is arranged through the workpiece cleaning plate 35 from top to bottom. The limiting wire 39 is arranged to be hollow. A plurality of holes are formed in the limiting wire 39. When the tooling plate 11 is actually used, after the workpiece is cut into multiple sheets by the electrode wire and continues to move, at this time, the limiting wire 39 enters the cutting gap. Further, a liquid recovery device is arranged at the bottom of the residue cleaning device on the tooling plate 11. The liquid recovery device includes a reflux device 42. A plurality of limiting wires 39 extend to the bottom of the reflux device 42 to form a loop. A liquid pump 44 is arranged at the bottom of the reflux device 42 in cooperation with a plurality of limiting wires 39. A plurality of guiding pipes 43 are arranged at the bottom of the reflux device 42 in cooperation with a plurality of limiting wires 39. A residue collection device is arranged at the top of the tooling plate 11 in cooperation with the residue cleaning device. The residue collection device includes a collection tank 28. The collection tank 28 is arranged in cooperation with a plurality of limiting wires 39. The limiting wire 39 penetrates through the collection tank 28. A plurality of openings 29 are formed in the collection tank 28 in cooperation with the limiting wire 39. A partition plate 38 is arranged on one side of the collection tank 28 close to the limiting wire 39. A magnet 41 is arranged on the side of the partition plate 38 away from the limiting wire 39. The bottom end of the limiting wire 39 is wound in the liquid recovery device, similar to a coiled tube shape. Liquid is input at one end. At this time, the liquid flows out from the openings 39 in the limiting wire 39 to clean the impurities in the gap generated by the workpiece cutting. At the same time, because the gap between the limiting wire 39 and the workpiece is small, as the liquid is discharged, the liquid will be sucked back into the pipeline when flowing in the limiting wire 39, so as to achieve the effect of cleaning the dirt on the workpiece. Then, the magnet 41 arranged in the residue collection device sucks and recovers the magnetic dirt.

[0047] Further, a guide rod 34 is arranged on the tooling plate 11 in cooperation with the residue cleaning device. A guide motor 33 is arranged on one side of the tooling plate 11 in cooperation with the guide rod 34. The guide rod 34 is controlled to rotate by the guide motor 33, so as to drive the residue cleaning device to move, and then control the residue cleaning device according to the position of the workpiece during cutting.

[0048] During actual use, the operator pulls out the electrode wire from the wire pay-off reel 26 before startup, winds it around the tension adjustment device, winds it around the winding main shaft 8 for multiple turns, and then winds it around the tension adjustment device again before it is wound and recycled by the wire take-up reel 21. During startup, the workpiece is placed on the tooling table 6, the tooling plate 11 is adjusted to a suitable position, the guiding motor 33 is controlled to move the residue cleaning device to a specified position, the residue cleaning device is turned on, the first electrode rod 9 and the second electrode rod 10 are turned on to start cutting the workpiece, and the first driving motor 2, the second driving motor 4 and the guiding motor 33 are controlled to move synchronously to complete the cutting of the workpiece.

[0049] Although the embodiments of the present invention have been shown and described, the specific embodiments are only interpretations of the present invention and not limitations thereof. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations without creative contributions to the embodiments as needed, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. Electric spark four-axis cutting device, including a support base (1), characterized in that: A workpiece adjustment device is provided on the support base (1). A tension adjustment device is provided on one side of the support base (1) on the support base (1). A lifting column (13) is provided between the workpiece adjustment device and the tension adjustment device. A tooling plate (11) is slidably provided on the lifting column (13). A lifting drive motor (14) is provided at the top of the lifting column (13) in cooperation with the tooling plate (11). A second electrode rod (10) is provided at the top of one side of the tooling plate (11). The bottom of one side of the tooling plate (11) is matched with a first electrode rod (9). Four winding main shafts (8) are symmetrically provided on both sides of the first electrode rod (9) and the second electrode rod (10) on the tooling plate (11). An electrode wire is wound in the winding main shaft (8). The tension adjustment device is provided in cooperation with the winding main shaft (8). The tension adjustment device includes a support frame (24). A wire take-up barrel (21) and a wire pay-off barrel (26) are rotatably fixed on the support frame (24). A second wire shaft drive motor (22) is provided on the support frame (24). A first wire shaft drive motor (16) is provided on the support frame (24) in cooperation with the wire take-up barrel (21). A first wire wheel mounting frame (19) is provided on the support frame (24) in cooperation with the wire take-up barrel (21). A second support wheel (27) is provided on the first wire wheel mounting frame (19). A second wire wheel mounting frame (23) is provided on the support frame (24) in cooperation with the wire pay-off barrel (26). A first support wheel (17) is provided on the second wire wheel mounting frame (23). A first wire guiding wheel (12) and a second wire guiding wheel (15) are provided on the tooling plate (11) in cooperation with the electrode wire.

2. The electric discharge four-axis cutting device according to claim 1, wherein: A residue cleaning device is provided between the four winding main shafts (8) on the tooling plate (11). The residue cleaning device includes a workpiece cleaning plate (35). A plurality of slots (40) are formed in the workpiece cleaning plate (35). A limiting wire (39) is vertically penetrated through the workpiece cleaning plate (35). The limiting wire (39) is provided to be hollow. A plurality of holes are formed in the limiting wire (39).

3. The electric discharge four-axis cutting device according to claim 1, wherein: The workpiece adjustment device includes a second translation platform (5). A second drive motor (4) is provided at one end of the second translation platform (5) in cooperation with it. A first translation platform (3) is provided at the top of the second translation platform (5). A first drive motor (2) is provided at one end of the first translation platform (3) in cooperation with it. A tooling table (6) is provided at the top of the second translation platform (5).

4. The electric discharge four-axis cutting device according to claim 1, wherein: A control device is provided below the bottoms of a number of wire winding spindles (8) on the tooling plate (11). The control device includes a pair of transmission shafts (7). A support rod (31) is provided between the pair of transmission shafts (7) on the tooling plate (11). A synchronous frame (32) is rotatably provided on the transmission shaft (7). The other end of the synchronous frame (32) is rotatably connected to the support rod (31). A groove is formed on the tooling plate (11) to cooperate with the support rod (31). One end of the support rod (31) is slidably provided in its groove. A first conductor (30) is provided at one end of the support rod (31) in the groove. A second conductor (37) is provided at the top of the groove to cooperate with the first conductor (30). A return spring (36) is provided between the second conductor (37) and the support rod (31).

5. The electric discharge four-axis cutting device according to claim 1, wherein: A guide rod (34) is provided on the tooling plate (11) to cooperate with the residue cleaning device. A guide motor (33) is provided on one side of the tooling plate (11) to cooperate with the guide rod (34).

6. The electric spark four-axis cutting device according to claim 1, characterized in that: The tension adjustment device further includes a wire take-up guide pulley (18) and a wire pay-off guide pulley (45). A guide plate (25) is provided on the support frame (24) to cooperate with the wire take-up guide pulley (18) and the wire pay-off guide pulley (45). A stepping motor (20) is provided on the support frame (24) to cooperate with the guide plate (25).

7. The electric spark four-axis cutting device according to claim 2, characterized in that: A liquid recovery device is provided between the tooling plate (11) and the bottom of the residue cleaning device. The liquid recovery device includes a reflux device (42). A number of limit wires (39) extend to the bottom of the reflux device (42) to form a circuit. A liquid pump (44) is provided at the bottom of the reflux device (42) to cooperate with the number of limit wires (39). A number of guide pipes (43) are provided at the bottom of the reflux device (42) to cooperate with the number of limit wires (39).

8. The electric spark four-axis cutting device according to claim 2, wherein: A residue collection device is provided on the top of the tooling plate (11) to cooperate with the residue cleaning device. The residue collection device includes a collection tank (28). The collection tank (28) is provided to cooperate with a number of limit wires (39). The limit wires (39) penetrate through the collection tank (28). A number of openings (29) are formed on the collection tank (28) to cooperate with the limit wires (39). A partition plate (38) is provided on one side of the collection tank (28) close to the limit wires (39). A magnet (41) is provided on the side of the partition plate (38) away from the limit wires (39).

9. The electric discharge four-axis cutting method is used for the electric discharge four-axis cutting device according to any one of claims 1-8, and is characterized in that: The method includes the following steps: Step 1: Before starting, the operator pulls out the electrode wire from the wire pay-off barrel (26), winds it around the tension adjustment device, winds it around the wire winding spindle (8) for multiple turns, and then winds it around the tension adjustment device again, and then winds it up and recovers it by the wire take-up barrel (21). Step 2: When starting, place the workpiece on the tooling table (6), adjust the tooling plate (11) to a suitable position, control the guide motor (33) to move the residue cleaning device to a specified position, and turn on the residue cleaning device. Step 3: Turn on the first electrode rod (9) and the second electrode rod (10) to start cutting the workpiece, and control the first drive motor (2), the second drive motor (4) and the guide motor (33) to move synchronously to complete the cutting of the workpiece.

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