Electrolytic machining tool electrodes

Abstract

This invention belongs to the field of electrolytic machining technology and discloses an electrolytic machining tool electrode, including a first electrode, an upper base plate connected to the first electrode, a second electrode, and a lower base plate connected to the second electrode. The first and second electrodes have machining gaps with two surfaces of the workpiece, respectively. The first electrode has a first outlet, the upper base plate has a first inlet and a first outlet connected to the first outlet, and a first flow channel connecting the first inlet and the first outlet is formed within the upper base plate. The second electrode is rotatably connected to the first electrode and has a second outlet, the lower base plate has a second inlet and a second outlet connected to the second outlet, and a second flow channel connecting the second inlet and the second outlet is formed within the lower base plate. The opening angle of the first and second electrodes can be adjusted to fit the workpiece. Electrolyte is introduced into the first and second inlets and sprayed from the first and second outlets into the machining gaps, whereby the workpiece material is etched away, resulting in a frame beam with high precision and good surface quality.

Description

Technical Field

[0001] This invention relates to the field of electrochemical machining technology, and more particularly to an electrochemical machining tool electrode. Background Technology

[0002] Frame beams are an important form of aircraft skeleton structure, and they come in various forms, such as cross-shaped, I-shaped, and T-shaped. The forming quality of frame beams directly affects the assembly accuracy, aerodynamic shape, and service life of the aircraft, and is a key technology affecting aircraft development and ensuring its service performance. However, the aforementioned frame beams are complex in structure, large in size, and thin-walled, making them prone to deformation during processing and difficult to guarantee in terms of precision. In existing technologies, electrolytic machining is often used to process these frame beams. Electrolytic machining is an advanced manufacturing technology based on the principle of electrochemical dissolution of anodic metal. During the processing, the tool electrode and the anodic workpiece maintain a certain processing gap, and the metal material of the anodic workpiece is removed in the form of ions. It is a non-contact processing method with advantages such as wide processing range, good surface quality, no processing stress, no tool wear, and high processing efficiency.

[0003] However, existing tool electrodes can only be adapted to frame-type parts with a specific angle shape, and cannot be adapted to the machining of multi-angle-shaped parts such as cross-shaped, I-shaped, and T-shaped parts at the same time. Therefore, corresponding tool electrodes can only be made for different frame-type parts, which increases the machining cost.

[0004] Therefore, there is an urgent need for a device to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide an electrochemical machining tool electrode that can dynamically adjust the opening and closing angle to adapt to the electrochemical machining of frame-like parts with different angles and shapes.

[0006] To achieve this objective, the present invention employs the following technical solution: an electrolytic machining tool electrode, comprising:

[0007] The first electrode has a first liquid outlet and is connected to the negative terminal of the power supply. There is a processing gap between the first electrode and one of the surfaces of the workpiece to be processed.

[0008] An upper base plate is connected to the inner surface of the first electrode. The upper base plate is provided with a first inlet and a first flow channel is opened inside the upper base plate. A first outlet is opened on the side of the upper base plate connected to the first electrode and is connected to the first liquid outlet. The first flow channel is connected to the first inlet and the first outlet.

[0009] The second electrode is rotatably connected to the first electrode. The second electrode has a second liquid outlet and is connected to the negative terminal of the power supply. There is a processing gap between the second electrode and another surface of the workpiece to be processed.

[0010] A lower base plate is connected to the inner surface of the second electrode. The lower base plate is provided with a second inlet and a second flow channel is opened inside the lower base plate. A second outlet is opened on the side of the lower base plate connected to the second electrode and is connected to the second liquid outlet. The second flow channel is connected to the second inlet and the second outlet.

[0011] In some embodiments, the first inlet is located at the end of the upper base plate away from the second electrode, and the first flow channel has a tapered structure, with the cross-sectional area of ​​the end closer to the first inlet being larger than the cross-sectional area of ​​the end farther from the first inlet.

[0012] In some embodiments, the first outlet has a trapezoidal structure, and the cross-sectional area of ​​the end closer to the first inlet is greater than the cross-sectional area of ​​the end farther from the first inlet.

[0013] In some embodiments, the second inlet is located at the end of the lower base plate away from the first electrode, and the second flow channel has a tapered structure, with the cross-sectional area of ​​the end closer to the second inlet being larger than the cross-sectional area of ​​the end farther from the second inlet.

[0014] In some embodiments, the second outlet has a trapezoidal structure, with the cross-sectional area of ​​the end closer to the second inlet being larger than the cross-sectional area of ​​the end farther from the second inlet.

[0015] In some embodiments, the upper base plate is provided with a first inclined surface at the end near the connection between the first electrode and the second electrode, and the lower base plate is provided with a second inclined surface at the end near the connection between the second electrode and the first electrode. When the first electrode and / or the second electrode rotates, the first inclined surface and the second inclined surface are configured to prevent the end of the upper base plate near the second electrode from interfering with the end of the lower base plate near the first electrode.

[0016] In some embodiments, the first electrode is provided with a first bushing, the second electrode is provided with a second bushing, and the hinge shaft passes through the first bushing and the second bushing in an alternating manner.

[0017] In some embodiments, an insulating layer is provided on the outer surfaces of both the first bushing and the second bushing.

[0018] In some embodiments, the upper base plate has a first arc-shaped groove at one end near the first bushing, the first arc-shaped groove fitting the first bushing, the hinge shaft and the second bushing; the lower base plate has a second arc-shaped groove at one end near the second bushing, the second arc-shaped groove fitting the first bushing, the hinge shaft and the second bushing.

[0019] In some embodiments, the feed direction of the electrolytic machining tool electrode is a first direction, the first flow channel is opened perpendicular to the first direction inside the upper base plate, and the first outlet and the first liquid outlet are both arranged perpendicular to the first direction. The second flow channel is opened perpendicular to the first direction inside the lower base plate, and the second outlet and the second liquid outlet are both arranged perpendicular to the first direction.

[0020] Beneficial Effects: This invention provides an electrolytic machining tool electrode, comprising a first electrode, an upper base plate, a second electrode, and a lower base plate. The first electrode has a first liquid outlet connected to the negative terminal of a power supply. A machining gap exists between the first electrode and one surface of the workpiece to be machined. The upper base plate is connected to the inner surface of the first electrode and has a first inlet. A first flow channel is formed inside the upper base plate. A first outlet, aligned with the first liquid outlet, is formed on one side of the upper base plate connected to the first electrode. The first flow channel connects the first inlet and the first outlet. The second electrode is rotatably connected to the first electrode and has a second liquid outlet connected to the negative terminal of a power supply. A machining gap exists between the second electrode and another surface of the workpiece to be machined. The lower base plate is connected to the inner surface of the second electrode and has a second inlet. A second flow channel is formed inside the lower base plate. A second outlet, aligned with the second liquid outlet, is formed on one side of the lower base plate connected to the second electrode. The second flow channel connects the second inlet and the second outlet. With the above structural setup, when processing a workpiece, both the first and second electrodes are connected to the negative terminal of the power supply, while the workpiece to be processed is connected to the positive terminal. Simultaneously, electrolyte is introduced into the first and second inlets, and after passing through the first and second flow channels respectively, it is sprayed into the processing gap from the first and second outlets. Under the action of electrochemical reaction, the workpiece material around the electrodes of the electrolytic machining tool is eroded away, resulting in a frame beam structure with high dimensional accuracy and good surface quality. Furthermore, for workpieces with different angles and shapes, the opening angle between the first and second electrodes can be adjusted by rotating either the second or first electrode to adapt to different workpieces. This design offers strong versatility, a wide range of applications, and low processing costs. Attached Figure Description

[0021] Figure 1 This is an exploded view of the electrode of the electrolytic machining tool provided by the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the upper base plate provided by the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the lower base plate provided by the present invention;

[0024] Figure 4 This is a schematic diagram of the electrolytic machining tool provided by the present invention processing the workpiece to be processed;

[0025] Figure 5 This is an assembly diagram of the electrolytic machining tool provided by the present invention and the workpiece to be processed with an included angle of 60°;

[0026] Figure 6 This is an assembly diagram of the electrolytic machining tool provided by the present invention and the workpiece to be processed with an included angle of 90°;

[0027] Figure 7 This is an assembly diagram of the electrolytic machining tool provided by the present invention and the workpiece to be processed with an included angle of 120°.

[0028] In the diagram: 1. First electrode; 11. First outlet; 12. First bushing; 2. Upper base plate; 21. First inlet; 22. First flow channel; 23. First outlet; 24. First inclined surface; 25. First arc groove; 3. Second electrode; 31. Second outlet; 32. Second bushing; 4. Lower base plate; 41. Second inlet; 42. Second flow channel; 43. Second outlet; 44. Second inclined surface; 45. Second arc groove; 5. Insulating layer; 6. Hinge shaft. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0030] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature.

[0032] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0033] This invention provides an electrochemical machining tool electrode that is applicable to frame beam structures of different angles and shapes. The electrochemical machining tool electrode is connected to the negative terminal of a power supply, and the workpiece to be processed is connected to the positive terminal of the power supply. The electrochemical machining tool electrode is suspended close to the workpiece using a machine tool, forming a machining gap between them. Electrolyte is introduced into the electrochemical machining tool electrode, allowing it to enter the machining gap. During operation, the electrolyte continuously feeds along the workpiece. Under the action of an electrochemical reaction, the electrolyte reacts with the workpiece, thereby removing the metal from the workpiece in the form of ions, resulting in a frame beam structure with high dimensional accuracy and good surface quality.

[0034] The above-mentioned electrolytic machining tool electrodes, such as Figure 1 As shown, the device includes a first electrode 1 and an upper base plate 2. The first electrode 1 is connected to the negative terminal of the power supply, and the upper base plate 2 is connected to the inner surface of the first electrode 1. The first electrode 1 can form a processing gap with one of the surfaces of the workpiece to be processed. Electrolyte can be sprayed into the processing gap through the upper base plate 2 and the first electrode 1. Under the action of electrochemical reaction, the material of one surface of the workpiece to be processed will be etched away. The device also includes a second electrode 3 rotatably connected to the first electrode 1 and a lower base plate 4. The second electrode 3 is also connected to the negative terminal of the power supply, and the lower base plate 4 is connected to the inner surface of the second electrode 3. The second electrode 3 can form a processing gap with another surface of the workpiece to be processed. The first electrode 1 and the second electrode 3 are rotatably connected, so the opening angle between the first electrode 1 and the second electrode 3 is adjustable. Electrolyte can be sprayed into the processing gap through the lower base plate 4 and the second electrode 3. Under the action of electrochemical reaction, the material of the other surface of the workpiece to be processed will be etched away.

[0035] Specifically, such as Figure 2 As shown, the first electrode 1 has a first liquid outlet 11, and the upper base plate 2 has a first outlet 23 at one end connected to the first electrode 1. The first outlet 23 is connected to the first liquid outlet 11, meaning that the liquid flowing out through the first outlet 23 will flow out through the first liquid outlet 11 in the next step. In addition, the upper base plate 2 has a first inlet 21, and the upper base plate 2 also has a first flow channel 22 inside. The first flow channel 22 is connected to the first inlet 21 and the first outlet 23. Electrolyte is introduced into the first inlet 21, and the electrolyte can pass through the first flow channel 22 and the first outlet 23 in sequence, and finally flow out from the first liquid outlet 11 and spray into the processing gap.

[0036] Similarly, as Figure 3 As shown, the second electrode 3 has a second liquid outlet 31, and the lower base plate 4 has a second outlet 43 at one end connected to the second electrode 3. The second outlet 43 is connected to the second liquid outlet 31, meaning that the liquid flowing out through the second outlet 43 will flow out through the second liquid outlet 31 in the next step. At the same time, the lower base plate 4 also has a second inlet 41. The lower base plate 4 has a second flow channel 42 inside, and the second flow channel 42 is connected to the second inlet 41 and the second outlet 43. Electrolyte is introduced into the second inlet 41, and the electrolyte can pass through the second flow channel 42 and the second outlet 43 in sequence, and finally flow out from the second liquid outlet 31 and spray into the processing gap.

[0037] In some embodiments, both the first electrode 1 and the second electrode 3 are made of copper-tungsten alloy. Since tungsten has a high melting point and high density, and copper has excellent conductivity, copper-tungsten alloy has the characteristics of uniform microstructure, high temperature resistance, high strength, high density and excellent conductivity.

[0038] Specifically, both the upper base plate 2 and the lower base plate 4 are made of non-conductive materials to prevent leakage of current from the electrodes of the electrolytic machining tool during use. Optionally, the upper base plate 2 and the lower base plate 4 can be made to have the same shape.

[0039] In some embodiments, the upper base plate 2 is connected to the first electrode 1 by adhesive bonding. Similarly, the lower base plate 4 and the second electrode 3 are also connected by adhesive bonding, which is a firm connection that saves time and effort.

[0040] Optionally, the first outlet 23 is configured to have the same shape as the first liquid outlet 11, thereby ensuring that the electrolyte flowing out of the first outlet 23 can be sprayed out of the first liquid outlet 11 evenly. Similarly, the second outlet 43 is configured to have the same shape as the second liquid outlet 31, thereby ensuring that the electrolyte flowing out of the second outlet 43 can be sprayed out of the second liquid outlet 31 evenly.

[0041] Optionally, such as Figure 4As shown, the rotational connection between the first electrode 1 and the second electrode 3 is achieved through a hinged arrangement. Specifically, a first bushing 12 is provided at the upper end of the first electrode 1, and a second bushing 32 is provided at the lower end of the second electrode 3. The first bushing 12 and the second bushing 32 are arranged alternately, and a hinge shaft 6 is used to pass through the first bushing 12 and the second bushing 32 in sequence. Certain fixing measures are taken, such as sealing both ends of the hinge shaft 6 with nuts, thereby realizing the rotation of the first electrode 1 / second electrode 3 around the hinge shaft 6.

[0042] It should be mentioned that the first electrode 1 and the second electrode 3 are connected by a hinge shaft 6. The split design is simple and makes the installation of the electrode of the electrolytic machining tool provided in this embodiment quick and convenient.

[0043] Similarly, the first bushing 12 can be positioned at a lower position on the first pole piece 1, and the second bushing 32 can be positioned at a higher position on the second pole piece 3. The first bushing 12 and the second bushing 32 can be arranged alternately, and the second bushing 32 and the first bushing 12 can be sequentially inserted through the hinge shaft 6. This can also achieve a rotatable connection between the first pole piece 1 and the second pole piece 3.

[0044] In some embodiments, the first bushing 12 and the first electrode 1 are integrally integrated, and the second bushing 32 and the second electrode 3 are also integrally integrated, reducing connecting parts and facilitating production.

[0045] Specifically, an insulating layer 5, such as insulating paint, insulating glue, or plastic products, is provided on the outer surfaces of the first bushing 12 and the second bushing 32 to prevent leakage between the first electrode 1 and the second electrode 3 during operation.

[0046] Furthermore, the hinge shaft 6 is made of a non-conductive material to prevent leakage of current from the electrodes of the electrolytic machining tool during use.

[0047] In some embodiments, the first electrode 1 and the second electrode 3 rotate about the hinge shaft 6. When the included angle between the first electrode 1 and the second electrode 3 gradually decreases, interference will occur between the upper base plate 2 and the lower base plate 4, making it difficult for the first electrode 1 and the second electrode 3 to present a small included angle. To prevent this from happening, a first inclined surface 24 is provided at the end of the upper base plate 2 near the hinge shaft 6, and a second inclined surface 44 is provided at the end of the lower base plate 4 near the hinge shaft 6. When the included angle between the first electrode 1 and the second electrode 3 is small, the first inclined surface 24 will fit with the second inclined surface 44, thereby avoiding interference between the end of the upper base plate 2 near the hinge shaft 6 and the end of the lower base plate 4 near the hinge shaft 6, so that the first electrode 1 and the second electrode 3 can achieve a small included angle, improving the adaptability and versatility of the electrolytic machining tool electrode.

[0048] Optionally, a first arc-shaped groove 25 is provided at one end of the upper base plate 2 near the first bushing 12, so that the upper base plate 2 can fit tightly against the first electrode 1. Furthermore, when the included angle between the first electrode 1 and the second electrode 3 is small, the first bushing 12, the hinge shaft 6, and the second bushing 32 can all be placed in the first arc-shaped groove 25 to ensure smooth rotation. Similarly, a second arc-shaped groove 45 is provided at one end of the lower base plate 4 near the second bushing 32, so that the lower base plate 4 can fit tightly against the second electrode 3. When the included angle between the first electrode 1 and the second electrode 3 is small, the first bushing 12, the hinge shaft 6, and the second bushing 32 can all be placed in the second arc-shaped groove 45 to further ensure smooth rotation of the first electrode 1 / second electrode 3.

[0049] For ease of description, the direction of the electrolytic machining tool electrode along the workpiece feed direction is defined as the first direction. In some embodiments, the first liquid outlet 11 is disposed perpendicular to the first direction on the first electrode 1, and the first outlet 23 is disposed perpendicular to the first direction on the upper base plate 2 connected to one side of the first electrode 1. Since the smaller the opening on the first electrode 1 and the upper base plate 2, the more stable the structure of the first electrode 1 and the upper base plate 2, the first outlet 23 and the first liquid outlet 11 are opened perpendicular to the first direction. Under the condition that the opening length is constant, the range of workpiece contacted by the electrolyte per unit time can be expanded during the feeding process.

[0050] To facilitate the opening of the first outlet 23, and to minimize the cavity inside the upper base plate 2 to ensure the structural stability of the upper base plate 2, the first flow channel 22 is also opened perpendicularly to the first direction inside the upper base plate 2.

[0051] Furthermore, since the first flow channel 22 is arranged perpendicular to the first direction, in order to facilitate the introduction of electrolyte, the first inlet 21 is adapted to be located at the end of the upper base plate 2 away from the second electrode 3.

[0052] In some embodiments, the first flow channel 22 is configured as a tapered structure, that is, the cross-sectional area of ​​the end near the first inlet 21 is greater than the cross-sectional area of ​​the end away from the first inlet 21. After the electrolyte enters the first flow channel 22 through the first inlet 21, it forms a tapered flow, which improves the uniformity of distribution when flowing out from the first outlet 23, reduces the forward rushing phenomenon, and prevents the lack of liquid in the processing gap.

[0053] Furthermore, the first outlet 23 can be adapted to a trapezoidal structure, that is, the cross-sectional area of ​​the end closer to the first inlet 21 is greater than the cross-sectional area of ​​the end farther from the first inlet 21, which further improves the uniformity of electrolyte distribution when it flows out of the first outlet 23 and reduces the forward rushing phenomenon.

[0054] Preferably, since the first outlet 23 and the first liquid outlet 11 have the same shape, the first liquid outlet 11 is also a trapezoidal structure, and the cross-sectional area of ​​the end closer to the first inlet 21 is greater than the cross-sectional area of ​​the end farther away from the first inlet 21.

[0055] Similarly, the second outlet 31 is disposed perpendicular to the first direction on the second electrode 3, and the second outlet 43 is disposed perpendicular to the first direction on the lower base plate 4 connected to one side of the second electrode 3. Since the smaller the opening on the second electrode 3 and the lower base plate 4, the more stable the structure of the second electrode 3 and the lower base plate 4, the second outlet 43 and the second outlet 31 are opened perpendicular to the first direction. Under the condition that the opening length is constant, the range of workpieces contacted by electrolyte per unit time can be expanded during the feeding process.

[0056] To facilitate the opening of the second outlet 43, and to minimize the cavity inside the lower base plate 4 to ensure the structural stability of the lower base plate 4, the second flow channel 42 is also opened perpendicularly to the first direction inside the lower base plate 4.

[0057] Furthermore, since the second flow channel 42 is arranged perpendicular to the first direction, in order to facilitate the introduction of electrolyte, the second inlet 41 is adapted to be located at the end of the lower base plate 4 away from the first electrode 1.

[0058] In some embodiments, the second flow channel 42 is configured as a tapered structure, that is, the cross-sectional area of ​​the end near the second inlet 41 is greater than the cross-sectional area of ​​the end away from the second inlet 41. After the electrolyte enters the second flow channel 42 through the second inlet 41, it forms a tapered flow, which improves the uniformity of distribution when flowing out from the second outlet 43, reduces the forward rushing phenomenon, and prevents the lack of liquid in the processing gap.

[0059] Furthermore, the second outlet 43 can be adapted to a trapezoidal structure, that is, the cross-sectional area of ​​the end closer to the second inlet 41 is greater than the cross-sectional area of ​​the end farther from the second inlet 41, which further improves the uniformity of electrolyte distribution when it flows out of the second outlet 43 and reduces the forward rushing phenomenon.

[0060] Preferably, since the second outlet 43 and the second liquid outlet 31 have the same shape, the second liquid outlet 31 is also a trapezoidal structure, and the cross-sectional area of ​​the end closer to the second inlet 41 is greater than the cross-sectional area of ​​the end farther away from the second inlet 41.

[0061] In this embodiment, the electrolytic machining tool electrode requires both the first electrode 1 and the second electrode 3 to be connected to the negative terminal of the power supply, while the workpiece to be processed is connected to the positive terminal. The electrolytic machining tool electrode is then lifted using a machine tool. Figures 5-7As shown, the opening angle between the first electrode 1 and the second electrode 3 is adjusted so that the outer surface of the first electrode 1 is close to one of the surfaces to be processed on the workpiece, with a certain processing gap in between. At the same time, the outer surface of the second electrode 3 is close to the other surface to be processed on the workpiece, with a certain processing gap in between as well, to adapt to frame-like parts with different angles and shapes. Electrolyte is then introduced into the first inlet 21, so that after passing through the first flow channel 22 and the first outlet 23, the electrolyte is sprayed through the first outlet 11 into the processing gap between the first electrode 1 and one of the surfaces to be processed on the workpiece. At the same time, electrolyte is introduced into the second inlet 41, so that after passing through the second flow channel 42 and the second outlet 43, the electrolyte is sprayed through the second outlet 31 into the processing gap between the second electrode 3 and the other surface to be processed on the workpiece. During the operation, the feed is continuous, and by utilizing the electrochemical principle, the metal material on the workpiece, which serves as the anode, is removed in the form of ions, thereby obtaining a frame beam structure with high dimensional accuracy and good surface quality.

[0062] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An electrolytic machining tool electrode, characterized in that, include: The first electrode (1) is provided with a first liquid outlet (11) and is connected to the negative terminal of the power supply. There is a processing gap between the first electrode (1) and one of the surfaces to be processed of the workpiece. The upper base plate (2) is connected to the inner surface of the first electrode (1). The upper base plate (2) is provided with a first inlet (21). The upper base plate (2) is provided with a first flow channel (22) inside. The upper base plate (2) is connected to the first electrode (1) on one side and is provided with a first outlet (23) that is connected to the first liquid outlet (11). The first flow channel (22) is connected to the first inlet (21) and the first outlet (23). The second electrode (3) is rotatably connected to the first electrode (1). The second electrode (3) is provided with a second liquid outlet (31) and is connected to the negative terminal of the power supply. There is a processing gap between the second electrode (3) and another surface of the workpiece to be processed. The lower base plate (4) is connected to the inner surface of the second electrode (3). The lower base plate (4) is provided with a second inlet (41). The lower base plate (4) is provided with a second flow channel (42) inside. The lower base plate (4) is provided with a second outlet (43) connected to the second liquid outlet (31) on one side. The second flow channel (42) is connected to the second inlet (41) and the second outlet (43).

2. The electrolytic machining tool electrode according to claim 1, characterized in that, The first inlet (21) is located at the end of the upper base plate (2) away from the second electrode (3), and the first flow channel (22) has a tapered structure, with the cross-sectional area of ​​the end closer to the first inlet (21) being greater than the cross-sectional area of ​​the end farther from the first inlet (21).

3. The electrolytic machining tool electrode according to claim 1, characterized in that, The first outlet (23) has a trapezoidal structure, and the cross-sectional area of ​​the end closer to the first inlet (21) is greater than the cross-sectional area of ​​the end farther away from the first inlet (21).

4. The electrolytic machining tool electrode according to claim 1, characterized in that, The second inlet (41) is located at the end of the lower base plate (4) away from the first electrode (1), and the second flow channel (42) has a tapered structure, with the cross-sectional area of ​​the end closer to the second inlet (41) being greater than the cross-sectional area of ​​the end farther from the second inlet (41).

5. The electrolytic machining tool electrode according to claim 1, characterized in that, The second outlet (43) has a trapezoidal structure, and the cross-sectional area of ​​the end closer to the second inlet (41) is greater than the cross-sectional area of ​​the end farther away from the second inlet (41).

6. The electrolytic machining tool electrode according to claim 1, characterized in that, The upper base plate (2) has a first inclined surface (24) at one end near the connection between the first electrode (1) and the second electrode (3), and the lower base plate (4) has a second inclined surface (44) at one end near the connection between the second electrode (3) and the first electrode (1). When the first electrode (1) and / or the second electrode (3) rotate, the first inclined surface (24) and the second inclined surface (44) are configured to prevent the end of the upper base plate (2) near the second electrode (3) from interfering with the end of the lower base plate (4) near the first electrode (1).

7. The electrolytic machining tool electrode according to any one of claims 1-6, characterized in that, The first pole piece (1) is provided with a first bushing (12), and the second pole piece (3) is provided with a second bushing (32). The hinge shaft (6) passes through the first bushing (12) and the second bushing (32) in sequence.

8. The electrolytic machining tool electrode according to claim 7, characterized in that, An insulating layer (5) is provided on the outer surface of both the first bushing (12) and the second bushing (32).

9. The electrolytic machining tool electrode according to claim 7, characterized in that, The upper base plate (2) has a first arc-shaped groove (25) at one end near the first bushing (12), and the first arc-shaped groove (25) fits into the first bushing (12), the hinge shaft (6) and the second bushing (32). The lower base plate (4) has a second arc-shaped groove (45) at one end near the second bushing (32), and the second arc-shaped groove (45) fits into the first bushing (12), the hinge shaft (6) and the second bushing (32).

10. The electrolytic machining tool electrode according to claim 1, characterized in that, The feed direction of the electrolytic machining tool electrode is the first direction. The first flow channel (22) is opened perpendicular to the first direction inside the upper base plate (2). The first outlet (23) and the first liquid outlet (11) are both set perpendicular to the first direction. The second flow channel (42) is opened perpendicular to the first direction inside the lower base plate (4). The second outlet (43) and the second liquid outlet (31) are both set perpendicular to the first direction.

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