Three-head electric discharge machine and using method thereof

Abstract

The invention discloses a three-head electric discharge machine and a using method thereof.The three-head electric discharge machine comprises a machine body, a working pool is arranged on one side of the machine body, a controller is arranged on one side of the machine body, a transmission column is arranged on one side of the machine body, a discharge column is arranged on one side of the transmission column, and a containing table is arranged in the working pool; a convenient taking device capable of conducting auxiliary limiting on workpieces on the containing table and rapidly taking out the machined workpieces at the same time is arranged in the working pool, and the convenient taking device comprises a T-shaped plate and two sliding rails. And meanwhile, the machined workpieces can be rapidly separated from the containing table and taken out, the situation that when workers take the workpieces, the hands are scalded due to residual heat of the workpieces is reduced, and the convenience and safety of taking out the workpieces by the workers are improved.

Description

Technical Field

[0001] The invention relates to the technical field of electric spark machines, in particular to a three-head electric spark machine and a use method thereof. Background Art

[0002] The EDM machine, also known as CNC EDM machine tool, EDM machine, etc., is an electrical processing equipment that is widely used in the manufacture of various metal molds and mechanical equipment. The EDM machine uses high-frequency electric sparks on the surface of the workpiece to instantly heat and melt the local area. Through the cooling and flushing of the working fluid, the workpiece can be cut, punched, and other processes are achieved. It is also called discharge machining or electro-erosion machining.

[0003] During use, the existing EDM machines mostly fill the working pool with working fluid, then place the workpiece to be processed on a placement table in the working pool, and then use the transmission column to drive the discharge column to move up and down and contact the workpiece surface to generate high-frequency electric sparks, so that the workpiece is partially heated and melted, so as to achieve cutting, drilling and other processing of the workpiece, and then the personnel manually take out the processed workpiece. However, since a certain amount of heat will remain on the surface of the workpiece after being melted by heat, and the workpiece is immersed in the working fluid for a long time, the workpiece and the placement table are more closely attached, which may make it difficult for personnel to take out the workpiece and easily cause hand burns. Summary of the invention

[0004] The present invention proposes a three-head electric spark machine and a method for using the same to solve the problem that a certain amount of heat will remain on the surface of a workpiece after it is melted by heat, and the workpiece is immersed in a working fluid for a long time, causing the workpiece to fit closely to a placement table, which may make it difficult for personnel to remove the workpiece and easily cause hand burns.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a three-head electric spark machine, including a machine body, a working pool is arranged on one side of the machine body, a controller is arranged on one side of the machine body, a transmission column is arranged on one side of the machine body, a discharge column is arranged on one side of the transmission column, a placing table is arranged inside the working pool, and a convenient retrieval device is arranged inside the working pool for assisting in limiting the workpiece on the placing table and quickly taking out the workpiece after processing.

[0006] Preferably, the retrieval device includes a T-shaped plate and two slide rails, a connecting device is provided between the T-shaped plate and the working pool, a cooling device is provided on one side of the slide rail, the two slide rails are symmetrically fixedly connected to the surface of the T-shaped plate, a dual-axis motor is fixedly connected to one side of the T-shaped plate, two output ends of the dual-axis motor are fixedly connected to round rods, the ends of the two round rods away from the dual-axis motor are respectively rotatably connected to the inner walls of the two slide rails, the inner walls of the two slide rails are slidably connected to sliders, one side of the two sliders are fixedly connected to electric telescopic rods, the moving ends of the two electric telescopic rods are fixedly connected to pressure plates, one side of the two round rods are fixedly connected to ropes, and the other ends of the two ropes are respectively fixedly connected to the two sliders.

[0007] Preferably, a circular plate is fixedly connected to one side of the two round rods, the surface of the circular plate is larger than the inner wall of the slide rail, and the surfaces of the two circular plates are respectively fitted with the surfaces of the two slide rails.

[0008] Preferably, a plurality of anti-slip strips are fixedly connected to adjacent sides of the two pressing plates, and the plurality of anti-slip strips are arranged at equal distances.

[0009] Preferably, a baffle is fixedly connected to a side of the T-shaped plate close to the dual-axis motor, and a rubber pad is fixedly connected to a side of the baffle away from the dual-axis motor.

[0010] Preferably, the connecting device includes a rectangular frame, the surface of the rectangular frame is fixedly connected to the inner wall of the working pool, a threaded hole is opened on one side of the rectangular frame, the inner wall of the threaded hole is threadedly connected with a bolt, the side of the T-plate away from the slide rail is fixedly connected to a circular hole block, the surface of the circular hole block is slidably connected to the inner wall of the rectangular frame, and the surface size and shape of the bolt are adapted to the size and shape of the inner wall of the circular hole block.

[0011] Preferably, a support block is fixedly connected to one side of the rectangular frame, the surface of the support block is trapezoidal, and the surface of the support block is in contact with the surface of the T-shaped plate.

[0012] Preferably, the cooling device includes a rectangular tube, which is fixedly connected to the slide rail, a circular hole is opened on one side of the rectangular tube, the inner wall of the circular hole is slidably connected with a pin, the inner wall of the rectangular tube is slidably connected with a concave rod, one side of the concave rod is fixedly connected to a fan, the output end of the fan is fixedly connected to a wind hood, a circular through hole is opened on one side of the concave rod, and the surface size and shape of the pin are adapted to the size and shape of the inner wall of the circular through hole.

[0013] Preferably, one end of the latch is fixedly connected to an auxiliary rod, and the surface of the auxiliary rod is rectangular.

[0014] The present invention also provides a method for using an electric spark machine, comprising the following steps:

[0015] S1. First, manually move the T-plate so that the T-plate drives the circular hole block to move. When the circular hole block moves to a position completely inserted into the rectangular frame, the inner wall of the circular hole block coincides with the inner wall of the threaded hole. At this time, the bolt is rotated by a tool. When the bolt is rotated to the position inside the threaded hole and the circular hole block, the bolt fixes the circular hole block inside the rectangular frame, thereby completing the connection and fixation between the convenient access device and the working pool. At the same time, manually move the concave rod so that the concave rod drives the fan to move, and the fan drives the wind hood to move. When the concave rod moves to a position inserted into the rectangular tube, the inner wall of the round through hole coincides with the inner wall of the circular hole. At this time, manually move the pin so that the pin is inserted into the circular hole and the inner position of the round through hole to fix the concave rod, thereby completing the connection and fixation between the fan and the slide rail.

[0016] S2. At this time, the workpiece is placed on the placement table and the two electric telescopic rods are started, so that the two electric telescopic rods drive the two pressure plates to move towards each other. When the two pressure plates move towards each other to squeeze the surface of the workpiece at the same time, the workpiece is clamped and fixed. At this time, the body, transmission column and discharge column are started through the controller, so that the transmission column drives the discharge column to move up and down through the internal transmission mechanism. When the discharge column moves to the position in contact with the surface of the workpiece, high-frequency electric sparks are emitted, causing the surface of the workpiece to melt due to heat, and the processing of the workpiece is completed.

[0017] S3. At this time, the dual-axis motor is started, so that the dual-axis motor drives the two round rods to rotate at the same time, so that the two round rods rotate inside the two slide rails, so that the two round rods respectively reel in the two ropes, so that the two ropes simultaneously pull the two sliders to move, so that the two sliders move along the inside of the two slide rails toward the dual-axis motor, so that the two sliders drive the two electric telescopic rods to move, so that the two electric telescopic rods drive the two pressure plates to move, so that the two pressure plates drive the workpiece to move away from the placement table, so that the workpiece translates along the surface of the placement table.

[0018] S4. When the workpiece is moved away from the placement table and close to the position of the dual-axis motor, the surface of the workpiece is in contact with the baffle. At this time, the fan is started to generate wind and blow it onto the surface of the workpiece through the wind hood, thereby completing the rapid removal of the workpiece and auxiliary cooling.

[0019] In summary, the beneficial effects of the present invention are:

[0020] By setting up a convenient taking device, the workpiece on the placement table can be clamped and fixed, and the workpiece after processing can be quickly separated from the placement table and taken out, reducing the possibility of hand burns due to residual heat in the workpiece when people take the workpiece, and improving the convenience and safety of people taking out the workpiece.

[0021] By providing a connecting device, the access device can be quickly installed and disassembled from the working pool, thereby improving the flexibility of use of the access device and the convenience of subsequent maintenance.

[0022] By setting up a cooling device, the workpiece that has left the surface of the placement table can be assisted in cooling down, reducing the situation where the workpiece has residual heat and causes burns when people pick it up, further improving the safety of people picking up the workpiece and the cooling efficiency of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0024] Figure 2 The present invention Figure 1 Schematic diagram of the local three-dimensional structure;

[0025] Figure 3 The present invention Figure 2 Schematic diagram of the local three-dimensional structure;

[0026] Figure 4 The present invention Figure 2 Schematic diagram of the local three-dimensional structure;

[0027] Figure 5 is a partial cross-sectional view of the slide rail of the present invention;

[0028] Figure 6 is another perspective view of the baffle of the present invention;

[0029] Figure 7 The present invention Figure 3 Another perspective of the picture;

[0030] Figure 8 It is a schematic diagram of the three-dimensional structure of the rectangular frame of the present invention;

[0031] Fig. 9 It is a three-dimensional structural schematic diagram of the concave rod of the present invention;

[0032] Fig.10 It is a schematic diagram of the three-dimensional structure of the rectangular tube of the present invention.

[0033] Description of reference numerals:

[0034] 1. Machine body; 2. Working pool; 3. Controller; 4. Transmission column; 5. Discharge column; 6. Placement table; 7. Access device; 71. T-plate; 72. Slide rail; 73. Baffle; 74. Double-axis motor; 75. Round rod; 76. Rope; 77. Slider; 78. Electric telescopic rod; 79. Press plate; 710. Anti-slip strip; 711. Round plate; 712. Rubber pad; 8. Connecting device; 81. Rectangular frame; 82. Threaded hole; 83. Bolt; 84. Support block; 85. Round hole block; 9. Cooling device; 91. Rectangular tube; 92. Round hole; 93. Latch; 94. Auxiliary rod; 95. Concave rod; 96. Round through hole; 97. Fan; 98. Wind hood. DETAILED DESCRIPTION

[0035] Reference Figure 1-6 As shown, the present embodiment discloses a three-head EDM machine, comprising a machine body 1, a working pool 2 is arranged on one side of the machine body 1, a controller 3 is arranged on one side of the machine body 1, a transmission column 4 is arranged on one side of the machine body 1, a discharge column 5 is arranged on one side of the transmission column 4, a placing table 6 is arranged inside the working pool 2, and a convenient device 7 is arranged inside the working pool 2 for assisting in limiting the position of the workpiece on the placing table 6, and for quickly taking out the workpiece after processing. First, the workpiece is placed on the placing table 6, and then the workpiece on the placing table 6 is limited by the convenient device 7. At this time, the machine body 1, the transmission column 4 and the discharge column 5 are started by the controller 3, so that the transmission column 4 drives the discharge column 5 to move up and down through the internal transmission mechanism, and when the discharge column 5 moves to a position in contact with the surface of the workpiece, a high-frequency electric spark is emitted, so that the surface of the workpiece is heated and melted, and the processing of the workpiece is completed. At this time, the processed workpiece is quickly taken out again by the convenient device 7, so as to reduce the situation of hand burns caused by directly taking the workpiece, and improve the convenience of taking out the workpiece.

[0036] Reference Figure 3-6As shown, the present embodiment discloses a stool taking device 7 including a T-shaped plate 71 and two slide rails 72, a connecting device 8 is provided between the T-shaped plate 71 and the working pool 2, a cooling device 9 is provided on one side of the slide rail 72, the two slide rails 72 are symmetrically fixedly connected to the surface of the T-shaped plate 71, a double-axis motor 74 is fixedly connected to one side of the T-shaped plate 71, both output ends of the double-axis motor 74 are fixedly connected to round rods 75, and the ends of the two round rods 75 away from the double-axis motor 74 are respectively rotatably connected to the inner walls of the two slide rails 72, and the two slide rails The inner wall of each of the two sliders 72 is slidably connected with a slider 77, one side of each of the two sliders 77 is fixedly connected with an electric telescopic rod 78, the moving ends of each of the two electric telescopic rods 78 are fixedly connected with a pressing plate 79, one side of each of the two round rods 75 is fixedly connected with a rope 76, the other ends of the two ropes 76 are respectively fixedly connected with the two sliders 77, by setting the convenient taking device 7, firstly, the workpiece is placed on the placing table 6, at this time, the two electric telescopic rods 78 are started, so that the two electric telescopic rods 78 drive the two pressing plates 79 to move towards each other, when the two When the pressing plates 79 move towards each other to the position where they squeeze the surfaces of the workpieces at the same time, the workpieces are clamped and fixed. When the processing of the workpieces is completed, the dual-axis motor 74 is started at this time, so that the dual-axis motor 74 drives the two round rods 75 to rotate at the same time, so that the two round rods 75 are located inside the two slide rails 72 and rotate, so that the two round rods 75 respectively reel in the two ropes 76, so that the two ropes 76 simultaneously pull the two sliders 77 to move, so that the two sliders 77 move along the inside of the two slide rails 72 toward the dual-axis motor 74, so that the two sliders 77 drive the two electric telescopic rods 78 to move, so that the two electric telescopic rods 78 drive the two pressing plates 79 to move, so that the two pressing plates 79 drive the workpiece to move in the direction away from the placement table 6, so that the workpiece is translated along the surface of the placement table 6, and when the workpiece moves away from the placement table 6 and close to the dual-axis motor 74, the workpiece is quickly taken out, which reduces the situation where the hands of personnel are scalded due to the residual heat of the workpiece when taking the workpiece, and improves the convenience and safety of personnel taking out the workpiece.

[0037] Reference Figure 3-6As shown, this embodiment discloses that one side of the two round rods 75 is fixedly connected with a circular plate 711, the surface of the circular plate 711 is larger than the inner wall of the slide rail 72, and the surfaces of the two circular plates 711 are respectively in contact with the surfaces of the two slide rails 72. By setting the circular plate 711, the circular plate 711 can intercept and limit the rope 76 rolled up on the round rod 75, thereby reducing the position deviation of the rope 76 when being rolled up by the round rod 75, resulting in the failure of the rope 76 to be rolled up or the disorderly rolling up, thereby improving the rolling stability and efficiency of the rope 76 by the round rod 75. The adjacent sides of the two pressure plates 79 are fixedly connected with a plurality of anti-skid strips 710, and the plurality of anti-skid strips 710 are arranged at equal distances. By setting the anti-skid strips 710, the anti-skid strips 710 can increase the friction between the pressure plate 79 and the workpiece, and at the same time increase the pressure The fit between the plate 79 and the surface of the workpiece can reduce the shaking or sliding of the workpiece when the pressure plate 79 clamps the workpiece to a limit, thereby improving the clamping stability of the pressure plate 79 on the workpiece. The side of the T-plate 71 close to the dual-axis motor 74 is fixedly connected to a baffle 73, and the side of the baffle 73 away from the dual-axis motor 74 is fixedly connected to a rubber pad 712. By arranging the baffle 73 and the rubber pad 712, the baffle 73 can assist in intercepting the workpiece during movement, thereby reducing the situation where the workpiece moves to a position close to the dual-axis motor 74 and collides with the dual-axis motor 74, causing damage to the dual-axis motor 74 and affecting its use. At the same time, the rubber pad 712 can separate the baffle 73 from the workpiece, reduce the wear caused by the collision between the workpiece and the baffle 73, and improve the interception efficiency of the baffle 73 and the workpiece.

[0038] Reference Figure 7 and Figure 8 As shown, the present embodiment discloses a connecting device 8 including a rectangular frame 81, the surface of the rectangular frame 81 is fixedly connected to the inner wall of the working pool 2, a threaded hole 82 is provided on one side of the rectangular frame 81, and a bolt 83 is threadedly connected to the inner wall of the threaded hole 82, and a T-shaped plate 71 is fixedly connected to a round hole block 85 on the side away from the slide rail 72, and the surface of the round hole block 85 is slidably connected to the inner wall of the rectangular frame 81, and the surface size and shape of the bolt 83 are adapted to the size and shape of the inner wall of the round hole block 85. By setting the connecting device 8, first manually move the T-shaped plate 71 so that the T-shaped plate 71 The circular hole block 85 is driven to move. When the circular hole block 85 moves to a position completely inserted into the interior of the rectangular frame 81, the inner wall of the circular hole block 85 coincides with the inner wall of the threaded hole 82. At this time, the bolt 83 is rotated by a tool. When the bolt 83 is rotated to the interior of the threaded hole 82 and the circular hole block 85, the bolt 83 fixes the circular hole block 85 inside the rectangular frame 81, thereby completing the connection and fixation between the access device 7 and the working pool 2. At the same time, the access device 7 can be quickly disassembled at a later time, thereby improving the use flexibility of the access device 7 and the convenience of later maintenance.

[0039] Reference Figure 7 and Figure 8As shown, the present embodiment discloses that a support block 84 is fixedly connected to one side of the rectangular frame 81, and the surface of the support block 84 is trapezoidal, and the surface of the support block 84 fits the surface of the T-shaped plate 71. By setting the support block 84, the support block 84 can provide auxiliary support to the side of the bottom of the T-shaped plate 71 close to the slide rail 72, thereby reducing the up and down shaking of the T-shaped plate 71 during use and improving the stability of the T-shaped plate 71 and the slide rail 72 during use.

[0040] Reference Fig. 9 and Fig.10 As shown, the present embodiment discloses a cooling device 9 including a rectangular tube 91, the rectangular tube 91 is fixedly connected to the slide rail 72, a circular hole 92 is provided on one side of the rectangular tube 91, a latch 93 is slidably connected to the inner wall of the circular hole 92, a concave rod 95 is slidably connected to the inner wall of the rectangular tube 91, a fan 97 is fixedly connected to one side of the concave rod 95, a fan 97 is fixedly connected to the output end of the fan 97, a wind hood 98 is fixedly connected, a round through hole 96 is provided on one side of the concave rod 95, the surface size and shape of the latch 93 are adapted to the size and shape of the inner wall of the round through hole 96, by setting the cooling device 9, first manually move the concave rod 95, so that the concave rod 95 drives the fan 97 to move, so that the fan 97 drives the wind hood 98 to move When the concave rod 95 moves to the position of being inserted into the inner part of the rectangular tube 91, the inner wall of the round hole 96 coincides with the inner wall of the circular hole 92. At this time, the pin 93 is manually moved so that the pin 93 is inserted into the inner position of the circular hole 92 and the round hole 96 to fix the position of the concave rod 95, thereby completing the connection and fixation of the fan 97 and the slide rail 72. When the workpiece is moved by the taking device 7 to the position where it fits with the baffle 73, the fan 97 is started, so that the fan 97 generates wind and blows on the surface of the workpiece through the wind hood 98, thereby completing the auxiliary cooling of the workpiece, reducing the situation where the workpiece has residual heat and causes burns to personnel when taking it, and further improving the safety of personnel taking the workpiece and the cooling efficiency of the workpiece.

[0041] Reference Fig. 9 and Fig.10 As shown, this embodiment discloses that one end of the latch pin 93 is fixedly connected to an auxiliary rod 94, and the surface of the auxiliary rod 94 is rectangular. By providing the auxiliary rod 94, the auxiliary rod 94 can increase the contact area of ​​the latch pin 93, so that a person can drive the latch pin 93 to move conveniently by manually moving the auxiliary rod 94, thereby improving the convenience and stability of manually plugging and unplugging the latch pin 93.

[0042] The working principle is as follows: first, manually move the T-plate 71 so that the T-plate 71 drives the circular hole block 85 to move. When the circular hole block 85 moves to a position where it is fully inserted into the rectangular frame 81, the inner wall of the circular hole block 85 coincides with the inner wall of the threaded hole 82. At this time, the bolt 83 is rotated by a tool. When the bolt 83 is rotated to the position inside the threaded hole 82 and the circular hole block 85, the bolt 83 fixes the circular hole block 85 inside the rectangular frame 81, thereby completing the connection and fixation between the retrieval device 7 and the working pool 2. At the same time, manually move the concave rod 95 so that the concave rod 95 drives the fan 97 to move, so that the fan 97 7 drives the wind cover 98 to move. When the concave rod 95 moves to the position of inserting into the inner part of the rectangular tube 91, the inner wall of the round hole 96 coincides with the inner wall of the circular hole 92. At this time, the latch 93 is manually moved so that the latch 93 is inserted into the inner position of the circular hole 92 and the round hole 96 to fix the position of the concave rod 95, thereby completing the connection and fixation of the fan 97 and the slide rail 72. At this time, the workpiece is placed on the placement table 6 and the two electric telescopic rods 78 are started, so that the two electric telescopic rods 78 drive the two pressing plates 79 to move towards each other. When the two pressing plates 79 move towards each other and squeeze the surface of the workpiece at the same time, the clamping and fixing of the workpiece is completed. The machine body 1, the transmission column 4 and the discharge column 5 are started by the controller 3 at this time, so that the transmission column 4 drives the discharge column 5 to move up and down through the internal transmission mechanism, and when the discharge column 5 moves to the position of fitting with the surface of the workpiece, a high-frequency electric spark is emitted, so that the surface of the workpiece is heated and melted, and the processing of the workpiece is completed. At this time, the double-axis motor 74 is started, so that the double-axis motor 74 drives the two round rods 75 to rotate at the same time, so that the two round rods 75 are located inside the two slide rails 72 and rotate, so that the two round rods 75 respectively reel in the two ropes 76, so that the two ropes 76 pull the two sliders 77 to move at the same time, so that the two sliders Block 77 moves along the inside of the two slide rails 72 toward the direction close to the dual-axis motor 74, so that the two slide blocks 77 drive the two electric telescopic rods 78 to move, and the two electric telescopic rods 78 drive the two pressure plates 79 to move, so that the two pressure plates 79 drive the workpiece to move away from the placement table 6, so that the workpiece is translated along the surface of the placement table 6. When the workpiece moves away from the placement table 6 and close to the position of the dual-axis motor 74, the surface of the workpiece is in contact with the baffle 73. At this time, the fan 97 is started, so that the fan 97 generates wind and blows on the surface of the workpiece through the wind hood 98, thereby completing the rapid removal of the workpiece and auxiliary cooling.

Claims

1. A three-head electric spark machine, comprising a machine body (1), characterized in that: A working pool (2) is arranged on one side of the machine body (1), a controller (3) is arranged on one side of the machine body (1), a transmission column (4) is arranged on one side of the machine body (1), a discharge column (5) is arranged on one side of the transmission column (4), a placement table (6) is arranged inside the working pool (2), and a retrieval device (7) is arranged inside the working pool (2) for assisting in limiting the position of a workpiece on the placement table (6) and for quickly taking out the workpiece after processing.

2. A three-head EDM machine according to claim 1, characterized in that: The stool extraction device (7) comprises a T-shaped plate (71) and two slide rails (72); a connecting device (8) is provided between the T-shaped plate (71) and the working pool (2); a cooling device (9) is provided on one side of the slide rail (72); the two slide rails (72) are symmetrically fixedly connected to the surface of the T-shaped plate (71); a double-axis motor (74) is fixedly connected to one side of the T-shaped plate (71); two output ends of the double-axis motor (74) are fixedly connected to round rods (75); the two round rods (75) One end away from the dual-axis motor (74) is rotatably connected to the inner wall of the two slide rails (72), the inner walls of the two slide rails (72) are slidably connected with sliders (77), one side of the two sliders (77) is fixedly connected with an electric telescopic rod (78), the moving ends of the two electric telescopic rods (78) are fixedly connected with a pressure plate (79), one side of the two round rods (75) is fixedly connected with a rope (76), and the other ends of the two ropes (76) are fixedly connected to the two sliders (77).

3. A three-head EDM machine according to claim 2, characterized in that: A circular plate (711) is fixedly connected to one side of each of the two round rods (75); the surface of the circular plate (711) is larger than the inner wall of the slide rail (72); and the surfaces of the two circular plates (711) are respectively fitted with the surfaces of the two slide rails (72).

4. A three-head EDM machine according to claim 2, characterized in that: A plurality of anti-slip strips (710) are fixedly connected to adjacent sides of the two pressing plates (79), and the plurality of anti-slip strips (710) are arranged at equal distances.

5. A three-head EDM machine according to claim 2, characterized in that: A baffle (73) is fixedly connected to a side of the T-shaped plate (71) close to the dual-axis motor (74), and a rubber pad (712) is fixedly connected to a side of the baffle (73) away from the dual-axis motor (74).

6. A three-head EDM machine according to claim 2, characterized in that: The connecting device (8) comprises a rectangular frame (81), the surface of the rectangular frame (81) is fixedly connected to the inner wall of the working pool (2), a threaded hole (82) is provided on one side of the rectangular frame (81), the inner wall of the threaded hole (82) is threadedly connected to a bolt (83), a side of the T-shaped plate (71) away from the slide rail (72) is fixedly connected to a circular hole block (85), the surface of the circular hole block (85) is slidably connected to the inner wall of the rectangular frame (81), and the surface size and shape of the bolt (83) are adapted to the size and shape of the inner wall of the circular hole block (85).

7. A three-head EDM machine according to claim 6, characterized in that: A support block (84) is fixedly connected to one side of the rectangular frame (81); the surface of the support block (84) is trapezoidal, and the surface of the support block (84) is in contact with the surface of the T-shaped plate (71).

8. A three-head EDM machine according to claim 2, characterized in that: The cooling device (9) comprises a rectangular tube (91), wherein the rectangular tube (91) is fixedly connected to the slide rail (72), a circular hole (92) is provided on one side of the rectangular tube (91), a latch (93) is slidably connected to the inner wall of the circular hole (92), a concave rod (95) is slidably connected to the inner wall of the rectangular tube (91), a fan (97) is fixedly connected to one side of the concave rod (95), a fan (97) is fixedly connected to the output end of the fan (97) is fixedly connected to a wind hood (98), a circular through hole (96) is provided on one side of the concave rod (95), and the surface size and shape of the latch (93) are adapted to the size and shape of the inner wall of the circular through hole (96).

9. A three-head EDM machine according to claim 8, characterized in that: One end of the latch pin (93) is fixedly connected to an auxiliary rod (94), and the surface of the auxiliary rod (94) is rectangular.

10. A method for using an electric spark machine, characterized in that: The method for using the electric spark machine according to any one of claims 1 to 9 comprises the following steps: S1. First, manually move the T-shaped plate (71) so that the T-shaped plate (71) drives the circular hole block (85) to move. When the circular hole block (85) moves to a position completely inserted into the interior of the rectangular frame (81), the inner wall of the circular hole block (85) coincides with the inner wall of the threaded hole (82). At this time, the bolt (83) is rotated by a tool. When the bolt (83) is rotated to the position inside the threaded hole (82) and the circular hole block (85), the bolt (83) fixes the circular hole block (85) inside the rectangular frame (81), thereby completing the connection between the access device (7) and the working pool (2). The concave rod (95) is manually moved to make the concave rod (95) drive the fan (97) to move, and the fan (97) drives the wind cover (98) to move. When the concave rod (95) moves to a position inserted into the interior of the rectangular tube (91), the inner wall of the round hole (96) coincides with the inner wall of the circular hole (92). At this time, the latch (93) is manually moved to make the latch (93) insert into the interior of the circular hole (92) and the round hole (96) to fix the position of the concave rod (95), thereby completing the connection and fixation of the fan (97) and the slide rail (72); S2, at this time, the workpiece is placed on the placement table (6) and the two electric telescopic rods (78) are started, so that the two electric telescopic rods (78) drive the two pressing plates (79) to move towards each other. When the two pressing plates (79) move towards each other to the position where they simultaneously squeeze the surface of the workpiece, the workpiece is clamped and fixed. At this time, the machine body (1), the transmission column (4) and the discharge column (5) are started through the controller (3), so that the transmission column (4) drives the discharge column (5) to move up and down through the internal transmission mechanism. When the discharge column (5) moves to the position where it fits the surface of the workpiece, high-frequency electric sparks are emitted, so that the surface of the workpiece is heated and melted, and the processing of the workpiece is completed; S3, at this time, the double-axis motor (74) is started, so that the double-axis motor (74) drives the two round rods (75) to rotate at the same time, so that the two round rods (75) are located inside the two slide rails (72) and rotate, so that the two round rods (75) respectively reel in the two ropes (76), so that the two ropes (76) simultaneously pull the two sliders (77) to move, so that the two sliders (77) move along the inside of the two slide rails (72) toward the double-axis motor (74), so that the two sliders (77) drive the two electric telescopic rods (78) to move, so that the two electric telescopic rods (78) drive the two pressure plates (79) to move, so that the two pressure plates (79) drive the workpiece to move away from the placement table (6), so that the workpiece is translated along the surface of the placement table (6); S4. When the workpiece is moved away from the placement table (6) and close to the position of the dual-axis motor (74), the surface of the workpiece is in contact with the baffle (73). At this time, the fan (97) is started, so that the fan (97) generates wind and blows on the surface of the workpiece through the wind cover (98), thereby completing the rapid removal of the workpiece and auxiliary cooling.

Images