Micro-groove wire cut electrical discharge machining method and cutting auxiliary device

Abstract

The invention discloses a micro-groove wire cut electrical discharge machining method and a cutting auxiliary device. The micro-groove wire cut electrical discharge machining method comprises the steps that an electrode wire is moved to cut into a machined part, the machined part is separated into a first part and a second part, the first part is provided with a micro-groove formed through cutting, the second part is provided with a protrusion corresponding to the micro-groove, and in the process of separating the machined part, the protrusion corresponds to the micro-groove; and the first piece and the second piece are respectively fixed and equidistantly positioned on the two sides of the moving direction of the electrode wire. Compared with an existing method that the micro-grooves are directly formed in the surface of the machined part through discharge cutting, by means of the micro-groove wire cut electrical discharge machining method, stress on the two sides of the electrode wire can be balanced due to the first part and the second part which are fixed and arranged at equal intervals, the phenomena that the electrode wire is oscillated and bent due to single-side stress are avoided, and the service life of the electrode wire is prolonged. And the requirement for tensioning force applied to the electrode wire is reduced, and micro-groove type parts can be conveniently and rapidly manufactured with low cost.

Description

Technical Field

[0001] The present invention relates to the technical field of wire cutting, and particularly to a method for wire electrical discharge machining of micro-grooves and a cutting auxiliary device. Background Art

[0002] The aviation manufacturing industry needs to use many precision machined parts with micro-grooves, such as crack comparison test blocks, hydraulic conduit depth comparison test blocks, and so on.

[0003] For most of these micro-groove parts, the external dimensions are first machined in place, and then the micro-grooves are machined by methods such as electrolytic machining and electrical discharge forming machining. The dimensional requirements for micro-grooves are extremely high, resulting in a low yield rate during machining. And in order to meet the dimensional requirements of micro-grooves, these machining methods need to be implemented with a high precision standard (such as the slow wire cutting process), which leads to a particularly high precision requirement for the electrode wire during machining, a high damage rate of the electrode wire, and a particularly high requirement for operators, greatly increasing the machining cycle and machining cost of the parts.

[0004] Based on the above, there is an urgent need for a method for wire electrical discharge machining of micro-grooves and a cutting auxiliary device that can solve the above technical problems. Summary of the Invention

[0005] An object of the present invention is to provide a method for wire electrical discharge machining of micro-grooves, which can conveniently and quickly manufacture micro-groove parts at a lower cost.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] The method for wire electrical discharge machining of micro-grooves includes:

[0008] Moving the electrode wire to cut into the workpiece and separating the workpiece into a first piece and a second piece. The first piece has a micro-groove formed by cutting, and the second piece has a protrusion corresponding to the micro-groove. And during the process of separating the workpiece, the first piece and the second piece are respectively fixed and equidistant on both sides of the moving direction of the electrode wire.

[0009] Optionally, the method for wire electrical discharge machining of micro-grooves includes:

[0010] Moving the electrode wire along the width direction of the workpiece and cutting into the space between the first piece and the second piece. The electrode wire is arranged along the height direction of the workpiece. The first piece and the second piece are integrally arranged along the length direction of the workpiece, and both the first piece and the second piece are fixedly arranged during cutting.

[0011] Move the wire electrode along the length direction of the workpiece to cut and form one side of the micro-groove; move the wire electrode along the width direction of the workpiece to cut and form the bottom surface of the micro-groove; move the wire electrode along the length direction of the workpiece to cut and form the other side of the micro-groove.

[0012] Optionally, the micro-groove electrical discharge wire cutting method includes:

[0013] After cutting and forming one micro-groove, first move the wire electrode along the width direction of the workpiece, and then move the wire electrode along the length direction of the workpiece to cut and form one side of another micro-groove; move the wire electrode along the width direction of the workpiece to cut and form the bottom surface of another micro-groove; move the wire electrode along the length direction of the workpiece to cut and form the other side of another micro-groove.

[0014] Optionally, the micro-groove electrical discharge wire cutting method includes:

[0015] After cutting and forming the other side of the micro-groove, move the wire electrode out of the workpiece along the width direction of the workpiece to separate the first part and the second part.

[0016] Optionally, along the length direction of the workpiece, the length dimension h of the second part is 1 - 2 mm.

[0017] The beneficial effect of the micro-groove electrical discharge wire cutting method provided by the present invention lies in:

[0018] Compared with the existing method of directly discharging and cutting on the surface of the workpiece to form micro-grooves, using the above micro-groove electrical discharge wire cutting method can make the forces on both sides of the wire electrode balanced due to the first part and the second part which are fixed and equidistant, avoid the phenomenon that the forces on both sides of the wire electrode are unbalanced due to material shrinkage and spacing change, resulting in wire electrode oscillation and bending, and further leading to out-of-tolerance machining dimensions. It also reduces the requirement for the tension force applied to the wire electrode, and can conveniently and quickly manufacture micro-groove parts at a lower cost.

[0019] Another object of the present invention is to provide a micro-groove electrical discharge wire cutting auxiliary device, which can conveniently and quickly manufacture micro-groove parts at a lower cost.

[0020] To achieve this purpose, the present invention adopts the following technical solutions:

[0021] The micro-groove wire electrical discharge machining (WEDM) auxiliary device is used to implement the micro-groove WEDM method. The micro-groove WEDM auxiliary device includes a first fixing member and a second fixing member. The first fixing member can fix the first workpiece during the separation process, and the second fixing member can fix the second workpiece during the separation process, so that the first workpiece and the second workpiece are respectively fixed and equidistant on both sides of the moving direction of the electrode wire during the separation process.

[0022] Optionally, the micro-groove WEDM auxiliary device further includes a mounting plate, and at least one of the first fixing member and the second fixing member is adjustably mounted on the mounting plate; when the workpiece is located between the first fixing member and the second fixing member, the first fixing member can fix one end of the workpiece, and the second fixing member can fix the other end of the workpiece;

[0023] One end of the workpiece is configured to form the first workpiece after separation, and the other end of the workpiece is configured to form the second workpiece after separation.

[0024] Optionally, the first fixing member is slidably and adjustably mounted on the mounting plate; and / or,

[0025] The second fixing member is slidably and adjustably mounted on the mounting plate.

[0026] Optionally, the micro-groove WEDM auxiliary device further includes a vacuum pump, and the first fixing member and / or the second fixing member is connected to the vacuum pump to adsorb and fix the first workpiece and / or the second workpiece correspondingly.

[0027] Optionally, the first fixing member and / or the second fixing member has an adsorption cavity. An air pipe is connected between the adsorption cavity and the vacuum pump. A sealing ring is arranged around the cavity opening of the adsorption cavity. The sealing ring can be hermetically attached to the workpiece, so that the first fixing member and / or the second fixing member adsorb and fix the first workpiece and / or the second workpiece correspondingly.

[0028] The beneficial effect of the micro-groove WEDM auxiliary device provided by the present invention is as follows: By using the above micro-groove WEDM auxiliary device, the forces on both sides of the electrode wire can be balanced due to the fixed and equidistant first workpiece and second workpiece, avoiding the phenomenon that the forces on both sides of the electrode wire are unbalanced due to material shrinkage and spacing change, resulting in electrode wire oscillation and bending, and further leading to out-of-tolerance machining dimensions. It also reduces the required tension force applied to the electrode wire, and can conveniently and quickly manufacture micro-groove parts at a lower cost. Description of the Drawings

[0029] Figure 1 is the first schematic diagram of the micro-groove WEDM method provided by the present invention;

[0030] Figure 2 is the second schematic diagram of the micro-groove electrical discharge wire cutting method provided by the present invention;

[0031] Figure 3 is the third schematic diagram of the micro-groove electrical discharge wire cutting method provided by the present invention;

[0032] Figure 4 is the three-dimensional structure diagram of the micro-groove electrical discharge wire cutting auxiliary device provided by the present invention;

[0033] Figure 5 is the structure diagram of the mounting plate in the present invention;

[0034] Figure 6 is the three-dimensional structure diagram of the first fixing member in the present invention;

[0035] Figure 7 is the assembly diagram of the locking bolt and nut in the present invention.

[0036] In the figure:

[0037] 1. Workpiece; 11. First piece; 110. Machining surface; 111. Micro-groove; 12. Second piece;

[0038] 2. Electrode wire;

[0039] 100. First fixing member; 101. Sliding part; 102. Mounting hole; 103. Sealing ring; 200. Second fixing member; 300. Mounting plate; 301. Sliding groove; 3011. Protrusion; 400. Locking bolt; 500. Nut; 600. Vacuum pump; 700. Air pipe. Detailed implementation manners

[0040] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Next, the technical solution of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present invention.

[0043] Next, refer to Figures 1 to 7 to introduce the micro-groove electrical discharge wire cutting method and cutting auxiliary device provided by the present invention. Specifically, the micro-groove 111 refers to a groove with a depth less than twice the unilateral machining dimension of the electrode wire 2. Exemplarily, in one embodiment, the workpiece 1 within 0.5 mm around the electrode wire 2 will be cut during discharge, so the unilateral machining dimension of the electrode wire 2 is 0.5 mm. If the depth of the groove to be machined is less than 1 mm, it belongs to the micro-groove 111 defined in the present invention. The parts having the above micro-grooves 111 include crack comparison test blocks, hydraulic conduit depth comparison test blocks, etc., and the present invention does not make specific limitations thereto.

[0044] For the convenience of description, in this embodiment, as Figures 1 to 3 shown, the electrode wire 2 for implementing the electrical discharge wire cutting method is arranged along the height direction of the workpiece 1 and moves along the width direction (i.e., Figure 1 the arrow direction shown) and the length direction of the workpiece 1 to cut the micro-groove 111 with the cutting depth direction being the length direction of the workpiece 1. In some other embodiments, the electrode wire 2 can also be arranged along the length or width direction of the workpiece 1, as long as the depth direction of the micro-groove 111 is perpendicular to the extension direction of the electrode wire 2, and the present invention does not make specific limitations thereto.

[0045] Exemplarily, in this embodiment, the moving electrode wire 2 cuts into the workpiece 1 and separates the workpiece 1 into a first piece 11 and a second piece 12. Among them, the first piece 11 has the micro-groove 111 formed by cutting, and the second piece 12 has a protrusion corresponding to the micro-groove 111. Moreover, during the process of separating the workpiece 1, the first piece 11 and the second piece 12 are respectively fixed and equidistant on both sides of the moving direction of the electrode wire 2.

[0046] It should be noted that when the first part 11 and the second part 12 are respectively fixed on both sides of the moving direction of the electrode wire 2 and the distances from the electrode wire 2 are equal, the explosion forces generated by discharge cutting on both sides of the electrode wire 2 are equal in magnitude and opposite in direction, which can enable the electrode wire 2 to be stably maintained between the first part 11 and the second part 12, and make the oscillation of the electrode wire 2 smaller. It can be understood that if the electrode wire 2 is stressed unilaterally, it will oscillate and bend, resulting in a change in the position of the electrode wire 2, reducing the machining accuracy, and the size of the micro-groove 111 exceeding the tolerance (mainly the depth dimension), reducing the yield rate. In the prior art, in order to avoid such bending, a method of applying a large tension force to the electrode wire 2 is adopted, which instead causes the electrode wire 2 to be easily broken, resulting in great cost losses (for example, the diameter of the high-precision electrode wire 2 for slow wire cutting is relatively thin, and the cost of a single wire can reach more than 10,000 yuan).

[0047] Compared with the existing method of directly forming the micro-groove 111 by discharge cutting on the surface of the workpiece 1, using the above-mentioned micro-groove electric discharge wire cutting method can make the forces on both sides of the electrode wire 2 balanced due to the first part 11 and the second part 12 being fixed and equidistant, avoiding the phenomenon that the forces on both sides of the electrode wire 2 are unbalanced due to material shrinkage and spacing change, resulting in oscillation and bending of the electrode wire 2, and further causing the machining size to exceed the tolerance. It also reduces the tension force requirement applied to the electrode wire 2, and can conveniently and quickly manufacture micro-groove parts at a lower cost.

[0048] Preferably, as Figure 3 shown, before separating the workpiece 1 with the electrode wire 2, first machine the outer shape of the workpiece 1 so that along the length direction of the workpiece 1, the length dimension h of the second part 12 is 1-2 mm. When the length dimension h is less than 1 mm, it may cause the second part 12 to bend, which will result in uneven forces on both sides of the electrode wire 2. When the length dimension h is greater than 2 mm, it will cause too much material to be cut, resulting in cost waste.

[0049] Exemplarily, referring to Figure 2 shown, in this embodiment, the micro-groove electric discharge wire cutting method includes:

[0050] S1. Move the electrode wire 2 along the width direction of the workpiece 1 and cut into the space between the first part 11 and the second part 12. The electrode wire 2 is arranged along the height direction of the workpiece 1. The first part 11 and the second part 12 are integrally arranged along the length direction of the workpiece 1, and both the first part 11 and the second part 12 are fixedly arranged when cutting in.

[0051] Specifically, in step S1, first move the electrode wire 2 along the width direction of the workpiece 1 and cut into the space between the first part 11 and the second part 12, thereby forming a cutting surface, which is the machining surface 110 where the micro-groove 111 is to be formed. At the same time, when cutting in, both the first part 11 and the second part 12 are fixedly arranged, ensuring that the forces on both sides of the electrode wire 2 are balanced.

[0052] S2. Move the electrode wire 2 along the length direction of the workpiece 1 to cut and form one side surface of the micro-groove 111; move the electrode wire 2 along the width direction of the workpiece 1 to cut and form the bottom surface of the micro-groove 111; move the electrode wire 2 along the length direction of the workpiece 1 to cut and form the other side surface of the micro-groove 111.

[0053] Specifically, in step S2, move the electrode wire 2 in a "J" shape, that is, sequentially cut the workpiece 1 along the length direction, width direction, and length direction of the workpiece 1, and then the micro-groove 111 and the protrusion corresponding to the micro-groove 111 can be cut and formed. After the workpiece 1 is separated into the first part 11 and the second part 12, the micro-groove 111 is located on the first part 11, and the protrusion is located on the second part 12.

[0054] Certainly, in step S2, since the first part 11 and the second part 12 still remain in a fixed setting state, the forces on both sides of the electrode wire 2 are still equal in magnitude and opposite in direction, and it can maintain a stable shape.

[0055] S3. After cutting and forming one micro-groove 111, first move the electrode wire 2 along the width direction of the workpiece 1, and then move the electrode wire 2 along the length direction of the workpiece 1 to cut and form one side surface of another micro-groove 111; move the electrode wire 2 along the width direction of the workpiece 1 to cut and form the bottom surface of another micro-groove 111; move the electrode wire 2 along the length direction of the workpiece 1 to cut and form the other side surface of another micro-groove 111.

[0056] Specifically, in step S3, first move the electrode wire 2 along the width direction of the workpiece 1 so that the electrode wire 2 is away from the previous micro-groove 111, and then the "J" - shaped trajectory can be repeated to cut the next micro-groove 111. In the present invention, the number of micro-grooves 111 on the first part 11 is not specifically limited, as long as it meets the test or use requirements.

[0057] S4. After cutting and forming the other side surface of the micro-groove 111, move the electrode wire 2 out of the workpiece 1 along the width direction of the workpiece 1 to separate the first part 11 and the second part 12.

[0058] Specifically, in step S4, after the micro-groove 111 is formed by cutting, that is, after the other side of the micro-groove 111 is formed by cutting, the electrode wire 2 is moved out of the workpiece 1 along the width direction of the workpiece 1, and then the first part 11 and the second part 12 can be separated. After separation, the first part 11 can be machined in terms of its shape and size except for the machining surface 110 to meet specific test or usage requirements.

[0059] Of course, in some embodiments, before the electrode wire 2 cuts into the workpiece 1, the shape and size of part of the workpiece 1 can also be machined and trimmed so that the shape and size of the first part 11 formed by cutting meet specific test or usage requirements, which also falls within the scope of protection of the present invention.

[0060] The present invention also provides a micro-groove electric discharge wire cutting auxiliary device for implementing the above-mentioned micro-groove electric discharge wire cutting method. As Figure 4 shown, the micro-groove electric discharge wire cutting auxiliary device includes a first fixing member 100 and a second fixing member 200. The first fixing member 100 can fix the first part 11 during the separation process, and the second fixing member 200 can fix the second part 12 during the separation process, so that the first part 11 and the second part 12 are respectively fixed and equidistant on both sides of the moving direction of the electrode wire 2 during the separation process.

[0061] Using the above-mentioned micro-groove electric discharge wire cutting auxiliary device can make the forces on both sides of the electrode wire 2 balanced due to the fixed and equidistant first part 11 and second part 12, avoid the phenomenon that the forces on both sides of the electrode wire 2 are unbalanced due to material shrinkage and spacing change, resulting in oscillation and bending of the electrode wire 2, and further causing machining dimension deviation. It also reduces the requirement for the tension force applied to the electrode wire 2, and can conveniently and quickly manufacture micro-groove parts at a lower cost.

[0062] Specifically, in this embodiment, as Figures 4 to 6As shown in the figure, the micro-groove electric discharge wire cutting auxiliary device further includes a mounting plate 300, and at least one of the first fixing member 100 and the second fixing member 200 is adjustably mounted on the mounting plate 300. When the workpiece 1 is located between the first fixing member 100 and the second fixing member 200, the first fixing member 100 can fix one end of the workpiece 1, and the second fixing member 200 can fix the other end of the workpiece being processed. After separation, one end of the workpiece 1 forms the above-mentioned first piece 11, and the other end of the workpiece 1 forms the above-mentioned second piece 12. During the separation process, through the first fixing member 100 and the second fixing member 200, the positions of the first piece 11 and the second piece 12 can be kept unchanged. At this time, the explosion forces generated on both sides of the electrode wire 2 due to discharge cutting are equal in magnitude and opposite in direction, so that the electrode wire 2 can be stably maintained between the first piece 11 and the second piece 12, making the oscillation of the electrode wire 2 smaller and avoiding bending of the electrode wire 2 due to unilateral force, resulting in out-of-tolerance machining dimensions.

[0063] More specifically, in this embodiment, as Figures 5 to 7 shown, the mounting plate 300 is provided with two sliding grooves 301, and the two sliding grooves 301 are arranged in parallel at intervals. Both the first fixing member 100 and the second fixing member 200 have a sliding portion 101 and a mounting hole 102. The sliding portion 101 is slidably arranged in one of the sliding grooves 301, and a locking bolt 400 is passed through the mounting hole 102. The nut portion of the locking bolt 400 is slidably arranged in the other sliding groove 301, and a nut 500 is threadedly connected to the threaded portion of the locking bolt 400. When it is necessary to fix the first fixing member 100 or the second fixing member 200, rotate the nut 500 to reduce the distance between the nut 500 and the threaded portion. The nut 500 and the threaded portion can then clamp the protruding portion 3011 at the notch of the sliding groove 301, thereby relatively fixing the first fixing member 100 or the second fixing member 200 and the mounting plate 300 in a position-adjustable manner.

[0064] Of course, in some other embodiments, it is also possible to only slidably arrange the first fixing member 100 and the mounting plate 300, or only slidably arrange the second fixing member 200 and the mounting plate 300, or connect the first fixing member 100 or the second fixing member 200 and the mounting plate 300 movably in other ways such as by a snap, etc. These all fall within the scope of protection of the present invention.

[0065] Preferably, in this embodiment, the micro-groove electric discharge wire cutting auxiliary device further includes a vacuum pump 600. The first fixing member 100 and the second fixing member 200 are communicated with the vacuum pump 600 to correspondingly adsorb and fix the first piece 11 and the second piece 12. Adsorption fixation can conveniently and quickly fix the workpiece 1, and has relatively low requirements for the fixing accuracy, which can further improve the processing efficiency.

[0066] Specifically, the first fixing member 100 and the second fixing member 200 have adsorption cavities. An air pipe 700 is connected between the adsorption cavities and a vacuum pump 600. A sealing ring 103 is disposed around the orifice of the adsorption cavity. The sealing ring 103 can be hermetically fitted to the workpiece 1 so that the first fixing member 100 and the second fixing member 200 correspondingly adsorb and fix the first workpiece 11 and the second workpiece 12.

[0067] When using the above micro-groove electric discharge wire cutting auxiliary device, exemplarily, first, according to the size of the workpiece 1, adjust the positions of the first fixing member 100 and the second fixing member 200 relative to the mounting plate 300, and clamp the workpiece 1 between the first fixing member 100 and the second fixing member 200. Then rotate the nut 500 to fix the first fixing member 100 and the second fixing member 200 to the mounting plate 300. Then start the vacuum pump 600 to adsorb and fix the workpiece 1. Finally, move the electrode wire 2 for processing.

[0068] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limitations on the embodiments of the present invention. For those of ordinary skill in the art, other different forms of changes or variations can be made on the basis of the above description. It is not necessary and impossible to enumerate all the embodiments here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. Micro groove wire EDM method, It is characterized in that include: The moving electrode wire (2) cuts into the workpiece (1) and separates the workpiece (1) into a first piece (11) and a second piece (12), wherein the first piece (11) has a micro groove (111) formed by cutting, and the second piece (12) has a protrusion corresponding to the micro groove (111), and in the process of separating the workpiece (1), the first piece (11) and the second piece (12) are respectively fixed and equidistantly located on both sides of the moving direction of the electrode wire (2).

2. The micro-groove wire electric discharge cutting method according to claim 1, It is characterized in that include: The electrode wire (2) is moved along the width direction of the workpiece (1) and cuts into between the first piece (11) and the second piece (12), the electrode wire (2) is arranged along the height direction of the workpiece (1), the first piece (11) and the second piece (12) are integrally arranged along the length direction of the workpiece (1), and the first piece (11) and the second piece (12) are fixedly arranged when cutting into the workpiece; The electrode wire (2) is moved along the length direction of the workpiece (1) to cut and form one side surface of the micro-groove (111); the electrode wire (2) is moved along the width direction of the workpiece (1) to cut and form the bottom surface of the micro-groove (111); and the electrode wire (2) is moved along the length direction of the workpiece (1) to cut and form another side surface of the micro-groove (111).

3. The micro-groove wire electric discharge cutting method according to claim 2, It is characterized in that include: After one micro-groove (111) is cut and formed, the electrode wire (2) is first moved along the width direction of the workpiece (1), and then the electrode wire (2) is moved along the length direction of the workpiece (1) to cut and form one side surface of another micro-groove (111); the electrode wire (2) is moved along the width direction of the workpiece (1) to cut and form the bottom surface of another micro-groove (111); and the electrode wire (2) is moved along the length direction of the workpiece (1) to cut and form another side surface of another micro-groove (111).

4. The micro-groove wire electric discharge cutting method according to claim 2 or 3, It is characterized in that include: After the other side of the micro groove (111) is cut and formed, the electrode wire (2) is moved out of the workpiece (1) along the width direction of the workpiece (1) to separate the first piece (11) and the second piece (12).

5. The micro-groove wire electric discharge cutting method according to claim 2, It is characterized in that Along the length direction of the workpiece (1), the length dimension h of the second piece (12) is 1-2 mm.

6. A micro-groove wire electric discharge cutting auxiliary device, used for implementing the micro-groove wire electric discharge cutting method according to any one of claims 1 to 5, It is characterized in that The invention comprises a first fixing member (100) and a second fixing member (200), wherein the first fixing member (100) is capable of fixing a first member (11) during a separation process, and the second fixing member (200) is capable of fixing a second member (12) during a separation process, so that the first member (11) and the second member (12) are respectively fixed and equidistantly located on both sides of a moving direction of an electrode wire (2) during the separation process.

7. The micro-groove wire electric discharge cutting auxiliary device according to claim 6, It is characterized in that The micro-groove electric spark wire cutting auxiliary device also includes a mounting plate (300), and at least one of the first fixing member (100) and the second fixing member (200) is adjustably mounted on the mounting plate (300); when the workpiece (1) is located between the first fixing member (100) and the second fixing member (200), the first fixing member (100) can fix one end of the workpiece (1), and the second fixing member (200) can fix the other end of the workpiece (1); One end of the workpiece (1) is configured to form the first piece (11) after separation, and the other end of the workpiece (1) is configured to form the second piece (12) after separation.

8. The micro-groove wire electric discharge cutting auxiliary device according to claim 7, It is characterized in that The first fixing member (100) is slidably mounted on the mounting plate (300) in an adjustable manner; and / or, The second fixing member (200) is slidably mounted on the mounting plate (300) in an adjustable manner.

9. The micro-groove wire electric discharge cutting auxiliary device according to claim 6, It is characterized in that The micro-groove wire electric discharge cutting auxiliary device also includes a vacuum pump (600), and the first fixing member (100) and / or the second fixing member (200) are connected to the vacuum pump (600) to correspondingly adsorb and fix the first member (11) and / or the second member (12).

10. The micro-groove wire electric discharge cutting auxiliary device according to claim 9, It is characterized in that The first fixing member (100) and / or the second fixing member (200) have an adsorption cavity, an air pipe (700) is connected between the adsorption cavity and the vacuum pump (600), a sealing ring (103) is arranged around the cavity opening of the adsorption cavity, and the sealing ring (103) can be sealed and fitted to the processing part (1), so that the first fixing member (100) and / or the second fixing member (200) can correspondingly adsorb and fix the first part (11) and / or the second part (12).

Images