A multi-channel electric spark-electrolysis composite cutting machining electrode and cutting method thereof

Abstract

The invention discloses a multi-channel electric spark-electrolysis composite cutting machining electrode and a cutting method thereof. The composite machining electrode consists of an electrolytic machining electrode with a tubular structure and a plurality of electric spark electrodes arranged in a circumferential direction thereof; an insulating layer is provided on the surface where the electric spark electrode and the electrolytic machining electrode are in contact, so that the electric spark electrode and the electrolytic machining electrode are not electrically conductive to each other; the electrolytic machining electrode is electrically connected to the negative electrode of an electrolytic machining power supply, the electric spark electrode is electrically connected to the negative electrode of the electric spark machining power supply, and the positive electrodes of the electrolytic machining power supply and the electric spark machining power supply are both electrically connected to a workpiece; a numerically controlled machine tool controls the composite machining electrode to rotate at a certain speed all the time; the electric spark electrode is easy to disassemble and assemble, and is easy to replace, thereby avoiding the problem that the entire electrode must be scrapped due to local electrode damage; the invention can be applied to a variety of machining conditions, and the composite cutting machining has the advantages of being flexible and convenient.

Description

Technical Field

[0001] The invention relates to the technical field of electric spark electrolysis composite cutting processing, in particular to a multi-channel electric spark-electrolysis composite cutting processing electrode and a cutting method thereof. Background Art

[0002] In the field of aerospace, the processing of high-precision, high-surface-integrity metal straight-grained surface components has always been a research issue for researchers at home and abroad. For example, the tenon and mortise connection structure of aircraft engine turbine disks has extremely stringent requirements on dimensional accuracy and surface integrity, and there is currently no low-cost, high-quality mature process to achieve this.

[0003] Among the existing methods, mechanical broaching technology has extremely high processing costs due to problems such as tool design and manufacturing cycle, tool wear during broaching, and difficult processing of aerospace component materials, and the broaching surface is prone to defects such as cold work hardening; electric spark wire cutting processing technology can ignore the material strength and hardness limitations of the workpiece due to its principle characteristics, but the defects such as recast layer, residual stress and heat affected zone produced on its processed surface limit its large-scale application in the aerospace field; laser cutting processing is similar to electric spark processing, and will also produce defects such as recast layer on the processed surface; electrolytic processing is based on the electrochemical anodic dissolution of metal materials, which can realize the dissolution and removal of materials in ion form, with high processing efficiency and good processing quality, and is not limited by the strength and hardness of the material. At the same time, the electrode material does not suffer loss and does not generate contact stress. The processing is carried out at room temperature and does not produce defects such as recast layer and heat affected layer. Therefore, electrolytic processing is expected to be used as a low-cost, high-quality mature process for the cutting processing technology of straight-grained metal components in the aerospace field.

[0004] However, due to the dissolution characteristics of materials and product discharge, it is difficult to achieve high-efficiency cutting of thick straight-grained surface components. In recent years, researchers have introduced EDM technology into the field of electrochemical machining technology, using the combined effect of EDM and electrochemical machining to achieve high-efficiency, non-recast layer processing of materials. Patent publication number CN112059340B discloses an electrolytic EDM composite cutting method using a tube electrode, but this method has problems such as easy wear of the EDM electrode, high replacement cost, and the inconvenience of using multiple reaction media. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the existing defects and provide a multi-channel electric spark-electrolysis composite cutting processing electrode and a cutting method thereof. The electric spark electrode is easy to disassemble and replace, avoiding the problem of scrapping the entire electrode due to local electrode damage; by changing the electrolyte concentration, it can be applied to a variety of processing conditions. The composite cutting processing is flexible and convenient, and can effectively solve the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multi-channel electric spark-electrolysis composite cutting machining electrode, the composite machining electrode is composed of an electrolytic machining electrode of a tubular structure and a plurality of electric spark electrodes arranged in its circumferential direction, the circumferential outer wall of the electrolytic machining electrode is provided with accommodating grooves matching the number of the electric spark electrodes, and the electric spark electrodes are all inserted in the corresponding accommodating grooves; the surface of the electric spark electrode in contact with the electrolytic machining electrode is provided with an insulating layer so that the electric spark electrode and the electrolytic machining electrode are not conductive to each other; the circumferential outer wall of the electrolytic machining electrode is evenly provided with microjet structures A connected to its internal cavity, and the outer wall of the electric spark electrode is provided with microjet structures B connected to it at the position corresponding to the microjet structure A.

[0007] Furthermore, the accommodating groove is a straight groove structure opened along the axial direction of the electrolytic machining electrode, the bottom end of the electrolytic machining electrode is provided with an insulating chassis, and the bottom end of the electric spark electrode is abutted on the insulating chassis, and a connecting hole is opened on the insulating chassis at the position corresponding to the electric spark electrode, and the bottom end of the electric spark electrode is fixedly connected to the insulating chassis through an insulating screw passing through the connecting hole; an insulating clamping ring is provided between the top ends of the electric spark electrodes, and the bottom surface of the insulating clamping ring abuts against the top surface of the electrolytic machining electrode.

[0008] Furthermore, the insulating clamp is provided with a second connection hole at a position corresponding to the electric spark electrode, and the top of the electric spark electrode is detachably fixedly connected to the insulating clamp via an insulating screw penetrating through the second connection hole.

[0009] Furthermore, a conductive loop wire 1 is provided on the bottom surface of the insulating clamp ring for electrically connecting the electric spark electrodes to each other, a conductive loop wire 2 is also provided on the bottom surface of the insulating clamp ring for electrically connecting to the electrolytic machining electrode, and two terminal posts are provided on the top surface of the insulating clamp ring, and the two terminal posts are electrically connected to conductive loop wire 1 and conductive loop wire 2 respectively.

[0010] Furthermore, the micro-jet structure A and the micro-jet structure B are both micro-pore or micro-slit structures.

[0011] Furthermore, the electrolytic machining electrode and the electric spark electrode are made of different materials; the electrolytic machining electrode is made of a high conductivity material, and the electric spark electrode is made of a material that is resistant to spark discharge wear.

[0012] To achieve the above-mentioned purpose, the present invention also provides the following technical solutions: a cutting method for a multi-channel electrospark-electrolysis composite cutting machining electrode, before the machining starts, the electrospark electrode is electrically connected to the negative electrode of the electrospark machining power supply, the electrospark electrode is electrically connected to the negative electrode of the electrospark machining power supply, and the positive electrodes of the electrospark machining power supply and the electrospark machining power supply are electrically connected to the workpiece; the workpiece is clamped in an electrolytic cell; the liquid inlet end of the electrospark machining electrode is connected to the electrolyte supply system through a pipeline, so that the electrolyte can be ejected through the microjet structure A and the microjet structure B, and the electrolyte is immersed in the workpiece, and the CNC machine tool controls the composite machining electrode to rotate at a certain speed all the time, and at the same time, the electrolyte flows out from the microjet structure A and the microjet structure B on the side wall of the composite machining electrode.

[0013] During the machining process, the CNC machine tool controls the composite machining electrode to feed along the workpiece machining path. The EDM electrode mainly produces spark discharge, and the electrolytic machining electrode mainly produces electrolytic reaction. The spark discharge of multiple EDM electrodes and the electrolytic reaction of the tubular electrolytic machining electrode work together to quickly remove materials and realize cutting feed processing.

[0014] Furthermore, when the electrolyte is a low conductivity concentration electrolyte, the electric spark electrode mainly undergoes spark discharge during the processing, and weak electrolysis occurs at the same time; the electrolytic machining electrode mainly undergoes electrolysis reaction. In this case, the spark discharge of the electric spark electrode mainly removes the material, and the electrolysis reaction of the electrolytic machining electrode mainly removes the recast layer of the machining surface; when the electrolyte is a high conductivity concentration electrolyte, the electric spark electrode mainly undergoes electrolysis during the processing. When the machining gap of the electric spark electrode reaches the spark discharge gap, spark discharge occurs, and the electrolytic machining electrode mainly undergoes electrolysis reaction. In this case, electrolysis reaction is the main way to remove material, and spark discharge plays a role in increasing material removal.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. High electrode replaceability: The electrode of the present invention is inserted into the concave groove of the electrolytic machining electrode as an auxiliary electrode. When the spark discharge loss of the spark electrode occurs, the electrode body can be replaced to keep using it, thus avoiding the problem of scrapping the entire electrode due to local electrode damage. At the same time, the spark electrode is easy to disassemble and replace.

[0017] 2. The method has good applicability: the present invention can achieve high-efficiency processing without recasting with high material removal rate mainly based on electric spark discharge by replacing the electrolyte with low conductivity concentration. This situation can be applied to straight-grained surface components with large thickness and high-efficiency cutting requirements; the present invention can achieve high-quality processing without recasting mainly based on electrolytic reaction by replacing the electrolyte with high conductivity concentration. In this case, the spark discharge effect is small and no spark discharge damage will be caused to the processed surface. It can be applied to straight-grained surface components with small thickness and high surface integrity cutting requirements; it can be applied to a variety of processing conditions, and composite cutting processing is flexible and convenient.

[0018] 3. The electrolytic reaction intensity and the electric spark cutting intensity of the composite machining electrode are adjustable: the electrolytic machining electrode and the electric spark machining electrode in the present invention are electrically connected to the electrolytic machining power supply and the electric spark machining power supply respectively, and the electrolytic reaction intensity and the electric spark cutting intensity can be adjusted according to the processing requirements, thereby further improving the composite cutting processing effect and the flexibility of composite cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the composite processing electrode structure of the present invention;

[0020] Figure 2 This is a partial enlarged view of the composite processing electrode of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the electrolytic machining electrode substrate of the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of the electric spark electrode of the present invention;

[0023] Figure 5 A bottom view of the insulating ring of the present invention;

[0024] Figure 6 It is a cross-sectional view of the composite machining electrode of the present invention;

[0025] Figure 7 It is a schematic diagram of the structure of the present invention during cutting processing;

[0026] Figure 8 It is a schematic diagram of the composite processing electrode reaction when the workpiece is processed in a low-conductivity electrolyte according to the present invention;

[0027] Fig. 9 It is a schematic diagram of the composite processing electrode reaction when the workpiece of the present invention is processed in a high conductivity electrolyte.

[0028] In the figure: 1, workpiece; 2, composite machining electrode; 3, electrolytic machining electrode; 31, accommodating groove; 32, micro-jet structure A; 33, insulating chassis; 34, connecting hole one; 4, electric spark electrode; 41, insulating layer; 42, micro-jet structure B; 5, insulating clamp; 51, conductive loop wire one; 52, conductive loop wire two; 53, terminal; 54, connecting hole two. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Embodiment 1

[0030] See also Figure 1-6 The present invention provides a technical solution: a multi-channel electric spark-electrolysis composite cutting machining electrode, wherein the composite machining electrode 2 is composed of a tubular electrolytic machining electrode 3 and a plurality of electric spark electrodes 4 arranged in the circumferential direction thereof, wherein the outer circumferential wall of the electrolytic machining electrode 3 is provided with accommodating grooves 31 matching the number of the electric spark electrodes 4, and the electric spark electrodes 4 are all inserted in the corresponding accommodating grooves 31;

[0031] The surface of the electric spark electrode 4 that is in contact with the electrolytic machining electrode 3 is provided with an insulating layer 41 so that the electric spark electrode 4 and the electrolytic machining electrode 3 are not electrically conductive to each other;

[0032] The accommodating groove 31 is a straight groove structure opened along the axial direction of the electrolytic machining electrode 3. The bottom end of the electrolytic machining electrode 3 is provided with an insulating chassis 33, and the bottom ends of the electric spark electrodes 4 are all abutted on the insulating chassis 33. The insulating chassis 33 is provided with connecting holes 34 at positions corresponding to the electric spark electrodes 4. The bottom ends of the electric spark electrodes 4 are fixedly connected to the insulating chassis 33 through insulating screws passing through the connecting holes 34; an insulating clamp 5 is provided between the top ends of the electric spark electrodes 4, and the bottom surface of the insulating clamp 5 is abutted against the top surface of the electrolytic machining electrode 3;

[0033] The circumferential outer wall of the electrolytic machining electrode 3 is evenly provided with micro-jet structures A32 connected to its internal cavity, and the outer wall of the electric spark electrode 4 is provided with micro-jet structures B42 connected to the micro-jet structures A32 at positions corresponding to the micro-jet structures A32.

[0034] Furthermore, the insulating clamp 5 is provided with a second connection hole 54 at a position corresponding to the spark electrode 4 , and the top of the spark electrode 4 is detachably fixedly connected to the insulating clamp 5 by an insulating screw penetrating through the second connection hole 54 .

[0035] Furthermore, a conductive loop 1 51 is provided on the bottom surface of the insulating clamp 5 to electrically connect the electric spark electrodes 4 to each other, and a conductive loop 2 52 is also provided on the bottom surface of the insulating clamp 5 to electrically connect the electrolytic machining electrode 3. Two terminals 53 are provided on the top surface of the insulating clamp 5, and the two terminals 53 are electrically connected to the conductive loop 1 51 and the conductive loop 2 52 respectively; the negative pole of the electrolytic machining power supply is electrically connected to the electrolytic machining electrode 3 through the terminal 53 corresponding to the conductive loop 1 51, and the negative pole of the electric spark machining power supply is electrically connected to the electric spark electrode 4 through the terminal 53 corresponding to the conductive loop 2 52.

[0036] Furthermore, the micro-jet structure A32 and the micro-jet structure B42 are both micro-pore or micro-slit structures.

[0037] Furthermore, the electrolytic machining electrode 3 and the electric spark electrode 4 are made of different materials; the electrolytic machining electrode 3 is made of a high conductivity material, and the electric spark electrode 4 is made of a material that is resistant to spark discharge wear.

[0038] The multi-channel electric spark-electrolysis composite cutting machining electrode disclosed in this embodiment, the electric spark electrodes 4 are formed into a whole through the insulating clamp ring 5. When the electrolytic machining electrode 3 and the electric spark electrode 4 are installed, the electric spark electrode 4 is nested in the accommodating groove 31 along the axial direction of the electrolytic machining electrode 3, and the bottom surface of the electric spark electrode 4 is abutted on the insulating chassis 33, and the electric spark electrode 4 is fixedly connected to the insulating chassis 33 on the electrolytic machining electrode 3 by insulating screws, so that the electrolytic machining electrode 3 and the electric spark electrode 4 are connected into a whole; when in use, the composite machining electrode 2 keeps rotating, the electric spark electrode 4 is mainly used for spark discharge to achieve rapid material removal, and the electrolytic machining electrode 3 is mainly used for electrolytic reaction to achieve removal of the recast layer on the machining surface of the material, and the material can be cut at high speed and high quality; the electric spark electrode 4 is detachably fixedly connected to the insulating clamp ring 5 and the insulating chassis 33 by insulating screws, and can be quickly replaced when the electric spark electrode 4 is discharged and lost, avoiding the problem of scrapping the entire electrode due to local electrode damage, and the electric spark electrode 4 is easy to replace. Embodiment 2

[0039] See also Figure 1-9The present invention also provides a technical solution: a cutting method for a multi-channel electrospark-electrolysis composite cutting machining electrode. Before the machining starts, the electrospark electrode 3 is electrically connected to the negative electrode of the electrospark power supply, the electrospark electrode 4 is electrically connected to the negative electrode of the electrospark power supply, and the positive electrodes of the electrospark power supply and the electrospark power supply are electrically connected to the workpiece 1; the workpiece 1 is clamped in the electrolytic cell; the liquid inlet end of the electrospark electrode 3 is connected to the electrolyte supply system through a pipeline, so that the electrolyte can be ejected through the microjet structure A32 and the microjet structure B42, and the electrolyte is immersed in the workpiece 1, and the CNC machine tool controls the composite machining electrode 2 to always rotate at a certain speed, and at the same time, the electrolyte flows out from the microjet structure A32 and the microjet structure B42 on the side wall of the composite machining electrode 2.

[0040] During the machining process, the CNC machine tool controls the composite machining electrode 2 to feed along the machining path of the workpiece 1, the electric spark electrode 4 mainly generates spark discharge, and the electrolytic machining electrode 3 mainly generates electrolytic reaction; the spark discharges of multiple electric spark electrodes 4 and the electrolytic reaction of the tubular electrolytic machining electrode 3 work together to quickly remove materials and realize cutting feed machining; the rotational motion of the composite machining electrode 2 realizes the transfer of the discharge point and improves the uniformity of the loss of the electric spark electrode 4; the electrolyte ejected from the electrode jet hole quickly flushes the machining area and improves the discharge of the product in the machining area.

[0041] Furthermore, when the electrolyte is a low conductivity concentration electrolyte, the electric spark electrode 4 mainly undergoes spark discharge during the machining process, and weak electrolysis occurs at the same time; the electrolytic machining electrode 3 mainly undergoes electrolysis reaction. In this case, the spark discharge of the electric spark electrode 4 mainly removes material, and the electrolysis reaction of the electrolytic machining electrode 3 mainly removes the recast layer of the machining surface; when the electrolyte is a high conductivity concentration electrolyte, the electric spark electrode 4 mainly undergoes electrolysis during the machining process. When the machining gap of the electric spark electrode 4 reaches the spark discharge gap, spark discharge occurs, and the electrolytic machining electrode 3 mainly undergoes electrolysis reaction. In this case, electrolysis reaction is the main way to remove material, and spark discharge plays a role in increasing material removal.

[0042] In the cutting method of the multi-channel electric spark-electrolysis composite cutting machining electrode disclosed in this embodiment, the spark discharge of multiple electric spark electrodes 4 and the electrolysis reaction of the tubular electrolytic machining electrode 3 work together to quickly remove materials and realize cutting feed processing; the rotation movement of the composite machining electrode 2 realizes the transfer of the discharge point and improves the uniformity of the loss of the electric spark electrode 4; the electrolyte ejected from the electrode jet orifice quickly flushes the processing area and improves the discharge of the product in the processing area;

[0043] By using an electrolyte with a low conductivity concentration, high material removal rate and high efficiency processing without recasting can be achieved with spark discharge as the main method. This method can be applied to straight-grained surface components with large thickness and high efficiency cutting requirements. By replacing the electrolyte with a high conductivity concentration, high-quality processing without recasting and mainly based on electrolytic reaction can be achieved. In this case, the spark discharge effect is small and no spark discharge damage will be caused to the processed surface. This method can be applied to straight-grained surface components with small thickness and high quality processing and surface integrity cutting requirements. It can be applied to a variety of processing conditions, and compound cutting processing is flexible and convenient.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-channel electric spark-electrolytic composite cutting machining electrode, wherein the composite machining electrode (2) is composed of an electrolytic machining electrode (3) of a tubular structure and a plurality of electric spark electrodes (4) arranged in a circumferential direction thereof, characterized in that: The electrolytic machining electrode (3) is provided with a number of accommodating grooves (31) matching the number of the electric spark electrodes (4) on its circumferential outer wall, and the electric spark electrodes (4) are all inserted into the corresponding accommodating grooves (31); the surface of the electric spark electrode (4) in contact with the electrolytic machining electrode (3) is provided with an insulating layer (41) so that the electric spark electrode (4) and the electrolytic machining electrode (3) are not electrically conductive to each other; the circumferential outer wall of the electrolytic machining electrode (3) is evenly provided with micro-jet structures A (32) connected to its internal cavity, and the outer wall of the electric spark electrode (4) is provided with micro-jet structures B (42) connected to the micro-jet structures A (32) at positions corresponding to the micro-jet structures A (32); The liquid inlet end of the electrolytic machining electrode (3) is connected to the electrolyte supply system through a pipeline. When the electrolyte is a low-conductivity electrolyte, the electric spark electrode (4) mainly undergoes spark discharge during machining and weak electrolysis occurs at the same time. The electrolytic machining electrode (3) mainly undergoes electrolysis reaction. In this case, the spark discharge of the electric spark electrode (4) mainly removes material, and the electrolysis reaction of the electrolytic machining electrode (3) mainly removes the recast layer on the machining surface. When the electrolyte is a high-conductivity electrolyte, the electric spark electrode (4) mainly undergoes electrolysis during machining. When the machining gap of the electric spark electrode (4) reaches the spark discharge gap, spark discharge occurs. The electrolytic machining electrode (3) mainly undergoes electrolysis reaction. In this case, electrolysis reaction is the main way to remove material, and spark discharge plays a role in increasing material removal.

2. The multi-channel electrospark-electrolysis composite cutting machining electrode according to claim 1, characterized in that: The accommodating groove (31) is a straight groove structure opened along the axial direction of the electrolytic machining electrode (3); the bottom end of the electrolytic machining electrode (3) is provided with an insulating base plate (33), and the bottom end of the electric spark electrode (4) is abutted against the insulating base plate (33); the insulating base plate (33) is provided with a connecting hole (34) at a position corresponding to the electric spark electrode (4); the bottom end of the electric spark electrode (4) is fixedly connected to the insulating base plate (33) by an insulating screw passing through the connecting hole (34); an insulating clamp (5) is provided between the top ends of the electric spark electrode (4), and the bottom surface of the insulating clamp (5) is abutted against the top surface of the electrolytic machining electrode (3).

3. The multi-channel electrospark-electrolysis composite cutting machining electrode according to claim 2, characterized in that: The insulating clamp (5) is provided with a second connection hole (54) at a position corresponding to the spark electrode (4), and the top end of the spark electrode (4) is detachably fixedly connected to the insulating clamp (5) by an insulating screw penetrating the second connection hole (54).

4. The multi-channel electrospark-electrolysis composite cutting machining electrode according to claim 2, characterized in that: A conductive loop line 1 (51) for electrically connecting the electric spark electrodes (4) to each other is provided on the bottom surface of the insulating clamp ring (5), a conductive loop line 2 (52) for electrically connecting to the electrolytic machining electrode (3) is also provided on the bottom surface of the insulating clamp ring (5), and two connecting posts (53) are provided on the top surface of the insulating clamp ring (5), and the two connecting posts (53) are electrically connected to the conductive loop line 1 (51) and the conductive loop line 2 (52) respectively.

5. The multi-channel electrospark-electrolysis composite cutting machining electrode according to claim 1, characterized in that: The micro-jet structure A (32) and the micro-jet structure B (42) are both micro-pore or micro-slit structures.

6. The multi-channel electrospark-electrolysis composite cutting machining electrode according to claim 1, characterized in that: The electrolytic machining electrode (3) and the electric spark electrode (4) are made of different materials; the electrolytic machining electrode (3) is made of a material with high electrical conductivity, and the electric spark electrode (4) is made of a material that is resistant to spark discharge wear.

7. The multi-channel electrospark-electrolysis composite cutting machining electrode according to claim 1, characterized in that: The electrolytic machining electrode (3) is made of pure tungsten or stainless steel; and the electric spark electrode (4) is made of tungsten-copper alloy.

8. A cutting method for a multi-channel electrospark-electrolysis composite cutting machining electrode according to any one of claims 1 to 7, characterized in that: Before the machining begins, the electrolytic machining electrode (3) is electrically connected to the negative electrode of the electrolytic machining power supply, the electric discharge electrode (4) is electrically connected to the negative electrode of the electric discharge machining power supply, and the positive electrodes of the electrolytic machining power supply and the electric discharge machining power supply are electrically connected to the workpiece (1); the workpiece (1) is clamped in an electrolytic cell; the liquid inlet end of the electrolytic machining electrode (3) is connected to an electrolyte supply system through a pipeline, so that the electrolyte can be ejected through the micro-jet structure A (32) and the micro-jet structure B (42) to immerse the workpiece (1); the CNC machine tool controls the composite machining electrode (2) to rotate at a certain speed all the time, and at the same time, the electrolyte flows out from the micro-jet structure A (32) and the micro-jet structure B (42) on the side wall of the composite machining electrode (2); During the machining process, the CNC machine tool controls the composite machining electrode (2) to feed along the machining path of the workpiece (1), the electric spark electrode (4) mainly generates spark discharge, and the electrolytic machining electrode (3) mainly generates electrolytic reaction; the spark discharge of the multiple electric spark electrodes (4) and the electrolytic reaction of the tubular electrolytic machining electrode (3) work together to quickly remove the material, thereby realizing cutting feed machining.

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