Perforating electrode wire and perforating machine

Abstract

The invention discloses a perforating electrode wire and a perforating machine, and belongs to the technical field of electric spark perforating. The perforating electrode wire is used for a perforating machine, the perforating machine is used for driving the electrode wire to rotate and move towards a workpiece, and the electrode wire is a cylinder with a side plane. When a perforating machine uses the electrode wire to machine a round hole, waste residues of the machined round hole can be discharged from the portion, provided with the side plane, of the electrode wire, and the problem that in the prior art, the section shape of the electrode wire and the machined shape coincide much, and waste residue discharging is not facilitated is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of electric spark perforation, in particular to a perforating electrode wire and a perforating machine. Background Art

[0002] The electric spark perforator uses a rotating chuck to clamp the end of the electrode wire away from the workpiece. When the workpiece is perforated, the rotating chuck drives the electrode wire to rotate, and the lifting device drives the rotating chuck and the electrode wire to pass through the wire guide tube and move toward the workpiece.

[0003] However, the electrode wire used in the prior art is a cylindrical structure. The chuck drives the cylindrical electrode wire to rotate and process the circular hole. There is a problem that the cross-sectional shape of the electrode wire and the processed shape overlap a lot, which is not conducive to the discharge of waste slag. Summary of the invention

[0004] Purpose of the invention: to provide a perforated electrode wire and a perforating machine, which solves the problem in the prior art that the cross-sectional shape of the electrode wire and the processed shape overlap a lot, which is not conducive to the discharge of waste slag, by making the electrode wire a cylindrical structure with a side plane.

[0005] The technical solution of the present invention is as follows: in the first aspect, a perforating electrode wire is used in a perforating machine, and the perforating machine is used to drive the electrode wire to rotate and move toward a workpiece.

[0006] The electrode wire is a cylinder with side planes.

[0007] In a further embodiment of the first aspect, the radial cross-section of the electrode wire includes: a connected circular arc outer contour and a straight line segment outer contour.

[0008] The arc outer contour is a local line segment of a circle, the straight line segment outer contour intersects perpendicularly with a diameter line of the circle where the arc outer contour is located, and the straight line segment outer contour intersects at 1 / 5 to 1 / 3 of the diameter line of the circle, and 2 / 3 to 4 / 5 of the diameter line of the circle is located in the enclosed area of ​​the arc outer contour and the straight line segment outer contour.

[0009] In a further embodiment of the first aspect, the radial cross-section of the electrode wire includes: an arc outer contour, a straight line segment outer contour and a chamfered line segment outer contour, and both ends of the arc outer contour and the straight line segment outer contour are connected by the chamfered line segment outer contour.

[0010] In a second aspect, a punching machine includes: a frame, a lifting device, a wire feeding device and the electrode wire described in the first aspect.

[0011] The lifting device is installed on the frame, the wire feeding device is installed on the lifting device, and the electrode wire is installed on the wire feeding device.

[0012] The wire feeding device comprises: a rotating mechanism, an electrode mechanism, a wire pressing wheel mechanism and a wire guide.

[0013] The rotating mechanism is installed on the lifting device, the electrode mechanism, the wire pressing wheel mechanism and the wire guide are installed on the rotating mechanism, the wire pressing wheel mechanism is arranged below the electrode mechanism, and the wire guide is arranged below the wire pressing wheel mechanism.

[0014] The wire guide piece is provided with a wire guide hole, the shape of which matches the shape of the electrode wire, so that the rotating mechanism drives the electrode wire to rotate through the wire guide piece.

[0015] The rotating mechanism is used to drive the electrode mechanism, the wire pressing wheel mechanism and the electrode wire to rotate. The electrode mechanism is connected to the electrode wire, and the wire pressing wheel mechanism is used to drive the electrode wire to move. The electrode wire is fixed at one end of the electrode wire close to the workpiece by the electrode mechanism and the wire pressing wheel mechanism, and then the wire pressing wheel mechanism feeds the wire to the end of the electrode wire close to the workpiece. The length of the electrode wire away from one end of the workpiece can be unlimited, and the length of the electrode wire can be greatly extended.

[0016] Moreover, the wire guide piece is installed on the rotating mechanism, and a lifting device can be used to drive the wire guide piece and the rotating mechanism to move synchronously, thereby simplifying the structure of the lifting device.

[0017] In a further embodiment of the second aspect, the wire feeding device also includes: a barrel installed on the frame, which is used to wind the electrode wire, and can greatly extend one end of the electrode wire away from the workpiece while being positioned.

[0018] In a further embodiment of the second aspect, the wire feeding device further includes: a first wire guide and a second wire guide.

[0019] The electrode mechanism and the wire pressing wheel mechanism are arranged between the first wire guide member and the second wire guide member, and the second wire guide member is arranged on the side of the wire pressing wheel mechanism close to the workpiece, so that the electrode wire, the electrode mechanism and the wire pressing wheel mechanism between the first wire guide member and the second wire guide member can rotate synchronously, thereby improving the stability of the coordination among the three.

[0020] In a further embodiment of the second aspect, the wire guide member is provided with a liquid cavity and a liquid outlet hole, the liquid cavity is used to connect to a liquid supply system, and the liquid outlet hole is connected to the liquid cavity.

[0021] The guide wire hole is a cylindrical cavity with a side plane, and the liquid outlet hole is arranged on one side of the side plane of the guide wire hole.

[0022] In a further embodiment of the second aspect, the side of the guide wire hole away from the liquid outlet is a guide wire arc contour, and the side of the guide wire hole close to the liquid outlet is a guide wire straight line contour, and the two guide wire straight line contours are respectively connected to the two ends of the guide wire arc contour.

[0023] The side of the liquid outlet hole away from the guide wire hole is a liquid outlet arc contour, and the side of the liquid outlet hole close to the guide wire hole is a liquid outlet transition contour. The two liquid outlet transition contours are respectively connected to the two ends of the liquid outlet arc contour.

[0024] The straight line profile of the guide wire and the liquid outlet transition profile are connected, so that the liquid outlet hole can communicate with the side plane of the guide wire hole, so that the fluid enters the perforation part of the workpiece along the side plane of the electrode wire, so that the fluid can be more accurately injected and the waste slag can be flushed out. At the same time, the guide wire part can drive the electrode wire to rotate stably through the straight line profile of the guide wire.

[0025] In a further embodiment of the second aspect, the side of the guide wire hole away from the liquid outlet hole is a guide wire arc contour, and the side of the liquid outlet hole away from the guide wire hole is a liquid outlet arc contour, and the guide wire arc contour and the liquid outlet arc contour are local line segments of the same circle, which can further enable the high-pressure fluid output from the liquid outlet hole and the electrode wire to form a complete circle on the workpiece when the guide wire member and the electrode wire rotate, and enable the fluid to more accurately flush into the processed part of the workpiece and thereby flush out the waste slag.

[0026] In a third aspect, a punching machine includes: a frame, a lifting device, a rotary chuck, a wire guide tube and the electrode wire described in the first aspect.

[0027] The lifting device is installed on the frame, the rotating chuck and the wire guide tube are installed on the lifting device, the electrode wire is installed on the rotating chuck, and the rotating chuck is used to drive the electrode wire to rotate and pass through the wire guide piece to move toward the workpiece.

[0028] The beneficial effects of the present invention are as follows: the present application makes the electrode wire a cylindrical structure with a side plane, and then combines the rotating device of the punching machine to drive the electrode wire to rotate, and utilizes the rotation of the electrode wire to complement the shape of the electrode wire to process a circular hole. In this process, the waste slag of the processed circular hole can be discharged from the part of the electrode wire where the side plane is provided, thereby solving the problem in the prior art that the cross-sectional shape of the electrode wire overlaps a lot with the processed shape, which is not conducive to the discharge of waste slag. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a partial axonometric schematic diagram of the electrode wire of the present invention.

[0030] Figure 2 It is a schematic diagram of a radial cross section of the electrode wire of the present invention.

[0031] Figure 3 It is an overall axonometric schematic diagram of the punching machine according to the second aspect of the present invention.

[0032] Figure 4 It is a schematic diagram of an embodiment of a wire feeding device of a punching machine according to the second aspect of the present invention including a barrel.

[0033] Figure 5It is a schematic diagram from another angle of the wire feeding device of the punching machine according to the second aspect of the present invention.

[0034] Figure 6 It is a schematic diagram of the electrode mechanism of the punching machine according to the second aspect of the present invention.

[0035] Figure 7 It is a schematic diagram of the wire pressing wheel mechanism according to the second aspect of the present invention being installed on the rotating mechanism.

[0036] Figure 8 It is a schematic diagram of the coordination of the active wire pressing wheel, the passive wire pressing wheel, the wire feeding active gear and the wire feeding passive gear according to the second aspect of the present invention.

[0037] Fig. 9 It is a partially enlarged bottom view of the second wire guide member of the second aspect of the present invention.

[0038] Fig.10 It is a partially enlarged bottom view schematic diagram of the cooperation between the second wire guide member and the electrode wire according to the second aspect of the present invention.

[0039] The reference numerals shown in the figure are: electrode wire 1, arc outer contour 11, straight line segment outer contour 12, chamfered line segment outer contour 13, frame 2, lifting device 3, wire feeding device 4, barrel 41, rotating mechanism 42, fixed frame 421, rotating motor 422, rotating passive gear 423, rotating frame 424, electrode mechanism 43, first fixed block 431, second fixed block 432, electrode spring 433, electrode guide assembly 434, electrode member 435, wire pressing wheel mechanism 44, wire feeding guide mechanism 441, wire feeding spring 442, wire feeding frame 443, wire feeding motor 444, active wire pressing wheel 445, passive wire pressing wheel 446, wire feeding active gear 447, wire feeding passive gear 448, wire guide member 45, wire guide arc contour 451, wire guide straight line contour 452, liquid outlet arc contour 423, liquid outlet transition contour 454. DETAILED DESCRIPTION

[0040] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features well known in the art are not described.

[0041] The present application discloses a perforated electrode wire and a perforator. The perforated electrode wire is used in the perforator. The perforator drives the electrode wire to rotate and move toward the workpiece. By making the electrode wire a cylindrical structure with a side plane, the problem that the cross-sectional shape of the electrode wire in the prior art overlaps a lot with the processed shape, which is not conducive to the discharge of waste slag is solved.

[0042] First, as Figure 1and 2 The wire electrode 1 shown is a cylinder provided with flat side surfaces.

[0043] The radial cross section of the electrode wire 1 includes: an arc outer contour 11 and a straight line segment outer contour 12 connected to each other.

[0044] The arc outer contour 11 is a local line segment of a circle, the straight segment outer contour 12 intersects perpendicularly with a diameter line of the circle where the arc outer contour 11 is located, and the straight segment outer contour 12 intersects at 1 / 5 to 1 / 3 of the diameter line of the circle, and the 2 / 3 to 4 / 5 part of the diameter line of the circle is located in the enclosed area of ​​the arc outer contour 11 and the straight segment outer contour 12, wherein the radial cross section of the electrode wire 1 is as follows Figure 2 In the cross section perpendicular to the axial direction of the electrode wire 1, in the preferred embodiment, the outer contour 12 of the straight segment intersects at 1 / 3 of the diameter line of the circle.

[0045] In a further embodiment, the radial cross section of the electrode wire 1 includes: an arc outer contour 11, a straight line segment outer contour 12 and a chamfered line segment outer contour 13, and the two ends of the arc outer contour 11 and the straight line segment outer contour 12 are connected by the chamfered line segment outer contour 13, and the chamfered line segment outer contour 13 can be as follows Figure 2 The arc line shown may also be a straight line segment that is arranged at an obtuse angle to the straight line segment outer contour 12 .

[0046] The method for using the electrode wire 1 comprises: S100, installing the electrode wire 1 and a workpiece on a punching machine, and the punching machine connects the electrode wire 1 and the workpiece with electrodes.

[0047] S200, the punching machine drives the electrode wire 1 to rotate and move toward the workpiece to perform punching processing on the workpiece.

[0048] S300. When the workpiece is punched using the electrode wire 1 in S200, the punching machine uses a fluid to flush out the waste residue at the punching position from the side plane of the electrode wire 1, wherein the fluid may be gas, water or oil.

[0049] In a second aspect, a punching machine includes: a frame 2, a lifting device 3, a wire feeding device 4 and the electrode wire 1 of the first aspect.

[0050] The lifting device 3 is installed on the frame 2 , the wire feeding device 4 is installed on the lifting device 3 , and the electrode wire 1 is installed on the wire feeding device 4 .

[0051] The wire feeding device 4 includes a rotating mechanism 42 , an electrode mechanism 43 , a wire pressing wheel mechanism 44 and a wire guide 45 .

[0052] The rotating mechanism 42 is installed on the lifting device 3 , the electrode mechanism 43 , the wire pressing wheel mechanism 44 and the wire guide 45 are installed on the rotating mechanism 42 , the wire pressing wheel mechanism 44 is arranged below the electrode mechanism 43 , and the wire guide 45 is arranged below the wire pressing wheel mechanism 44 .

[0053] The wire guide member 45 is provided with a wire guide hole, the shape of which matches the shape of the electrode wire 1, so that the rotating mechanism 42 drives the electrode wire 1 to rotate through the wire guide member 45. Fig.10 The wire guide hole shown is a cylindrical cavity with a side plane. The special-shaped structures of the wire guide hole and the electrode wire 1 are utilized to enable the rotating mechanism 42 to drive the electrode wire 1 to rotate through the wire guide member 45 .

[0054] The rotating mechanism 42 is used to drive the electrode mechanism 43, the wire pressing wheel mechanism 44 and the electrode wire 1 to rotate. The electrode mechanism 43 is connected to the electrode wire 1, and the wire pressing wheel mechanism 44 is used to drive the electrode wire 1 to move. In the preferred embodiment, one side of the electrode mechanism 43 and the wire pressing wheel mechanism 44 cooperates with the side plane of the electrode wire 1, which can increase the cooperation stability.

[0055] like Figure 3 and 4 The wire feeding device 4 shown further includes: a barrel 41 , which is mounted on the frame 2 and is used for winding the electrode wire 1 .

[0056] like Figure 5 The wire feeding device 4 shown further includes: a first wire guide 45 and a second wire guide 45 .

[0057] The electrode mechanism 43 and the wire pressing wheel mechanism 44 are arranged between the first wire guide 45 and the second wire guide 45 , and the second wire guide 45 is arranged on a side of the wire pressing wheel mechanism 44 close to the workpiece.

[0058] Regarding the wire guide member 45, the wire guide member 45 is provided with a liquid cavity and a liquid outlet. The liquid cavity is used to connect with the liquid supply system, and the liquid outlet is connected with the liquid cavity.

[0059] The guide wire hole is a cylindrical cavity with a side plane, and the liquid outlet is arranged on one side of the side plane of the guide wire hole. The second guide wire component 45 is provided with a guide wire hole, a liquid cavity and a liquid outlet, and the first guide wire component 45 is only provided with a guide wire hole, and no liquid cavity and liquid outlet are provided.

[0060] In a further embodiment of the wire guide member 45, the wire guide hole and the liquid outlet hole may be two separate holes, or may be a single hole. Fig. 9 As shown, the guide wire hole and the liquid outlet hole are connected to each other.

[0061] like Fig. 9 The side of the guide wire hole away from the liquid outlet is a guide wire arc profile 451, and the side of the guide wire hole close to the liquid outlet is a guide wire straight line profile 452. The two guide wire straight line profiles 452 are respectively connected to the two ends of the guide wire arc profile 451. Fig. 9The guidewire straight profile 452 and the guidewire arc profile 451 are connected by the guidewire chamfer profile.

[0062] The side of the liquid outlet hole away from the guide wire hole is a liquid outlet arc contour 423, and the side of the liquid outlet hole close to the guide wire hole is a liquid outlet transition contour 454. The two liquid outlet transition contours 454 are respectively connected to the two ends of the liquid outlet arc contour 423.

[0063] The guide wire straight profile 452 and the liquid outlet transition profile 454 are connected.

[0064] like Fig. 9 The liquid outflow transition profile 454 shown is a straight line arranged perpendicularly to the guide wire straight line profile 452, and the liquid outflow transition profile 454 may also be an arc.

[0065] In a further embodiment of the guide wire member 45, the side of the guide wire hole away from the liquid outlet is a guide wire arc contour 451, and the side of the liquid outlet hole away from the guide wire hole is a liquid outlet arc contour 423, and the guide wire arc contour 451 and the liquid outlet arc contour 423 are local line segments of the same circle.

[0066] Regarding the lifting device 3, the lifting device 3 is a mechanism such as a screw mechanism, an electric cylinder mechanism, or a hydraulic cylinder mechanism arranged vertically.

[0067] Regarding the rotating mechanism 42, Figure 4 and 5 The rotating mechanism 42 shown includes: a fixed frame 421 , a rotating motor 422 , a rotating driving gear, a rotating driven gear 423 and a rotating frame 424 .

[0068] The fixed frame 421 is installed on the lifting device 3 of the punching machine, the rotating motor 422 and the rotating passive gear 423 are installed on the fixed frame 421, the rotating driving gear is installed on the rotating motor 422, the rotating driving gear and the rotating passive gear 423 are meshed, and the rotating frame 424 is installed on the rotating passive gear 423. Figure 5 The first wire guide member 45 is mounted on the rotating driven gear 423 , and the second wire guide member 45 is mounted on the rotating frame 424 .

[0069] The electrode mechanism 43 and the wire pressing wheel mechanism 44 are installed on the rotating frame 424 .

[0070] The rotating mechanism 42 is used to drive the electrode mechanism 43, the wire pressing wheel mechanism 44 and the electrode wire 1 to reciprocate.

[0071] Regarding the electrode mechanism 43, Figure 4 As shown in the figure, a first electrode mechanism 43 and a second electrode mechanism 43 are provided. The electrode mechanism 43 can be directly mounted on the rotating mechanism 42, or can be mounted on the rotating mechanism 42 as shown in the figure. Figure 4As shown, the electrode mechanism 43 is installed on the wire feeding frame 443 of the wire pressing wheel mechanism 44, so that the electrode mechanism 43 is installed on the rotating mechanism 42 through the wire pressing wheel mechanism 44.

[0072] like Figure 6 The electrode mechanism 43 shown includes: a first fixing block 431 , a second fixing block 432 , an electrode spring 433 , an electrode guide assembly 434 and an electrode member 435 .

[0073] The first fixed block 431 and the second fixed block 432 are installed on the rotating mechanism 42, the electrode guide assembly 434 is installed on the first fixed block 431, the electrode member 435 is installed on the electrode guide assembly 434, and the electrode spring 433 is installed between the electrode member 435 and the first fixed block 431. The electrode spring 433 is used to apply a force to the electrode member 435 toward the second fixed block 432, so that the electrode member 435 and the second fixed block 432 clamp the electrode wire 1.

[0074] The first fixing block 431 of the first electrode mechanism 43 is disposed above the second fixing block 432 of the second electrode mechanism 43 .

[0075] The second fixing block 432 of the first electrode mechanism 43 is disposed above the first fixing block 431 of the second electrode mechanism 43 , so that the two electrode springs 433 can respectively apply opposing forces to the two electrode members 435 , thereby increasing the clamping force on the electrode wire 1 .

[0076] Regarding the thread pressing wheel mechanism 44, Figure 7 As shown, a first wire pressing wheel mechanism 44 and a second wire pressing wheel mechanism 44 are provided, wherein the electrode mechanism 43 is provided between the first wire pressing wheel mechanism 44 and the second wire pressing wheel mechanism 44, and the second wire pressing wheel mechanism 44 is provided on the side of the electrode mechanism 43 close to the workpiece. During the punching operation, the speed at which the electrode wire 1 is moved by the second wire pressing wheel mechanism 44 is greater than the speed at which the electrode wire 1 is moved by the first wire pressing wheel mechanism 44, so that the electrode wire 1 can maintain a certain tension during the movement and pass through the electrode mechanism 43 in a straight line.

[0077] The wire pressing wheel mechanism 44 includes: a wire feeding guide mechanism 441 , a wire feeding spring 442 , a wire feeding frame 443 , a wire feeding motor 444 , an active wire pressing wheel 445 , a passive wire pressing wheel 446 , a wire feeding active gear 447 and a wire feeding passive gear 448 .

[0078] Two wire feeding guide mechanisms 441 are installed on the rotating mechanism 42, two wire feeding racks 443 are installed on the two wire feeding guide mechanisms 441 respectively, a wire feeding spring 442 is installed between the wire feeding rack 443 and the rotating mechanism 42, a wire feeding motor 444 is installed on one wire feeding rack 443, an active wire pressing wheel 445 and a wire feeding active gear 447 are installed on the wire feeding motor 444, a passive wire pressing wheel 446 and a wire feeding passive gear 448 are installed on another wire feeding rack 443, an active wire pressing wheel 445 is connected to the wire feeding active gear 447, and a passive wire pressing wheel 447 is connected to the wire feeding active gear 448. 46 is connected to the wire feeding passive gear 448, the wire feeding active gear 447 is meshed with the wire feeding passive gear 448, and through the wire feeding guide mechanism 441 and the wire feeding spring 442, the active wire pressing wheel 445 and the passive wire pressing wheel 446 can have sufficient clamping force on the electrode wire 1, and can also adapt to the diameter of the electrode wire 1. Through the meshing of the wire feeding active gear 447 and the wire feeding passive gear 448, the wire feeding passive gear 448 drives the passive wire pressing wheel 446 to rotate synchronously with the active wire pressing wheel 445 to ensure the stability of the movement of the electrode wire 1.

[0079] exist Figure 7 In the illustrated embodiment, the first wire pressing wheel mechanism 44 and the second wire pressing wheel mechanism 44 share a set of wire feeding guide mechanism 441, wire feeding spring 442 and wire feeding rack 443. In other embodiments, only one set of wire feeding guide mechanism 441, wire feeding spring 442 and wire feeding rack 443 may be provided. One of the wire feeding motor 444 and the passive wire pressing wheel 446 of the wire pressing wheel mechanism 44 is installed on the rotating frame 424 of the rotating mechanism 42, and the other is installed on the wire feeding rack 443.

[0080] The wire feeding guide mechanism 441 and the electrode guide assembly 434 may be a combination of a linear bearing and a linear shaft, or a combination of a slider and a guide rail.

[0081] The working method of the punching machine is as follows: the electrode wire 1 wound by the barrel 41 passes through the electrode mechanism 43, the wire pressing wheel mechanism 44 and the wire guide 45, and the workpiece is clamped on the workbench.

[0082] The workbench drives the part of the workpiece to be processed to move to the bottom of the wire feeding device 4, and then the lifting device 3 drives the wire feeding device 4 to move toward the workpiece. The control equipment of the puncher controls the electrode wire 1 and the workpiece to connect the electrodes respectively. The wire pressing wheel mechanism 44 drives the electrode wire 1 on the barrel 41 to move toward the workpiece, while the rotating mechanism 42 drives the electrode wire 1 to rotate reciprocatingly to realize electric spark punching on the workpiece. During the punching process, the liquid supply system of the puncher transports fluid to the processed part of the workpiece through the liquid cavity and the liquid outlet of the second wire guide 45 to flush out the waste slag. When the pressure of the transported fluid exceeds the threshold, it also has a shaping function for the processed part.

[0083] In a third aspect, a punching machine comprises: a frame, a lifting device, a rotary chuck, a wire guide tube and the electrode wire 1 of the first aspect.

[0084] The lifting device is installed on the frame, the rotating chuck and the wire guide tube are installed on the lifting device, the electrode wire 1 is installed on the rotating chuck, the rotating chuck is used to drive the electrode wire 1 to rotate, and the lifting device is used to drive the rotating chuck and the electrode wire 1 to pass through the wire guide tube and move toward the workpiece.

[0085] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes may be made to it in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A perforated electrode wire, which is used in a perforating machine, and the perforating machine is used to drive the electrode wire to rotate and move toward the workpiece; It is characterized in that The electrode wire is a cylinder with side planes.

2. A perforated electrode wire according to claim 1, characterized in that: The radial cross section of the electrode wire includes: a connected circular arc outer contour and a straight line segment outer contour; The arc outer contour is a local line segment of a circle, the straight line segment outer contour intersects perpendicularly with a diameter line of the circle where the arc outer contour is located, and the straight line segment outer contour intersects at 1 / 5 to 1 / 3 of the diameter line of the circle, and 2 / 3 to 4 / 5 of the diameter line of the circle is located in the enclosed area of ​​the arc outer contour and the straight line segment outer contour.

3. The perforated electrode wire according to claim 1, characterized in that: The radial cross section of the electrode wire includes: an arc outer contour, a straight line segment outer contour and a chamfered line segment outer contour, and two ends of the arc outer contour and the straight line segment outer contour are connected through the chamfered line segment outer contour.

4. A punching machine, characterized in that: include: A frame, a lifting device, a wire feeding device, and an electrode wire as claimed in any one of claims 1 to 3; The lifting device is installed on the frame, the wire feeding device is installed on the lifting device, and the electrode wire is installed on the wire feeding device; The wire feeding device comprises: a rotating mechanism, an electrode mechanism, a wire pressing wheel mechanism and a wire guide; The rotating mechanism is installed on the lifting device, the electrode mechanism, the wire pressing wheel mechanism and the wire guide are installed on the rotating mechanism, the wire pressing wheel mechanism is arranged below the electrode mechanism, and the wire guide is arranged below the wire pressing wheel mechanism; The wire guide piece is provided with a wire guide hole, the shape of which matches the shape of the electrode wire, so that the rotating mechanism drives the electrode wire to rotate through the wire guide piece; The rotating mechanism is used to drive the electrode mechanism, the wire pressing wheel mechanism and the electrode wire to rotate; the electrode mechanism is connected to the electrode wire; and the wire pressing wheel mechanism is used to drive the electrode wire to move.

5. The punching machine according to claim 4, characterized in that: The wire feeding device also includes: a barrel, which is installed on the frame and is used for winding the electrode wire.

6. The punching machine according to claim 4, characterized in that: The wire feeding device further comprises: a first wire guide and a second wire guide; The electrode mechanism and the wire pressing wheel mechanism are arranged between the first wire guiding member and the second wire guiding member, and the second wire guiding member is arranged on a side of the wire pressing wheel mechanism close to the workpiece.

7. The punching machine according to claim 4, characterized in that: The wire guide is provided with a liquid cavity and a liquid outlet, wherein the liquid cavity is used to communicate with the liquid supply system, and the liquid outlet is connected with the liquid cavity; The guide wire hole is a cylindrical cavity with a side plane, and the liquid outlet hole is arranged on one side of the side plane of the guide wire hole.

8. The punching machine according to claim 7, characterized in that: The side of the guide wire hole away from the liquid outlet hole is a guide wire arc contour, and the side of the guide wire hole close to the liquid outlet hole is a guide wire straight contour, and the two guide wire straight contours are respectively connected to the two ends of the guide wire arc contour; The side of the liquid outlet hole away from the guide wire hole is a liquid outlet arc contour, and the side of the liquid outlet hole close to the guide wire hole is a liquid outlet transition contour, and the two liquid outlet transition contours are respectively connected to the two ends of the liquid outlet arc contour; The guide wire straight line profile is connected to the liquid outlet transition profile.

9. The punching machine according to claim 7, characterized in that: The side of the guide wire hole away from the liquid outlet hole is a guide wire arc contour, and the side of the liquid outlet hole away from the guide wire hole is a liquid outlet arc contour. The guide wire arc contour and the liquid outlet arc contour are local line segments of the same circle.

10. A punching machine, characterized in that: include: A frame, a lifting device, a rotary chuck, a wire guide tube, and the electrode wire according to any one of claims 1 to 3; The lifting device is installed on the frame, the rotating chuck and the wire guide tube are installed on the lifting device, the electrode wire is installed on the rotating chuck, the rotating chuck is used to drive the electrode wire to rotate, and the lifting device is used to drive the rotating chuck and the electrode wire to pass through the wire guide tube and move toward the workpiece.

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