Double-margin-plate blade interlayer cathode partition electrifying full-profile electrolytic machining device and method

Abstract

The invention relates to a double-margin-plate blade interlayer cathode partition electrifying full-profile electrolytic machining device and method, and belongs to the technical field of electrolytic machining. A blade basin / blade back sandwich type cathode in the device is an integrated cathode composed of a blade crown cathode, a blade body cathode, a tenon cathode and two insulating layers. The cathodes in the integrated sandwich type cathode are insulated from one another, partitioned electrification can be achieved, and the electrification state of each cathode is matched with the feeding direction of the integrated sandwich type cathode. In the machining process, the integrated sandwich type cathode is firstly fed in the blade body direction, the blade body cathode is powered on, other cathodes are powered off, and blade body profile machining is conducted; and then, the feeding direction of the integrated sandwich type cathode is converted into the blade crown or tenon direction feeding in situ, a blade crown cathode or a tenon cathode is powered on, other cathodes are powered off, and blade crown or tenon machining is carried out. The electrolytic machining of the whole profile of the double-margin-plate blade can be completed through one-time clamping and one machining procedure, the machining efficiency and the machining quality are greatly improved, and good practical significance is achieved.

Description

Technical Field

[0001] The invention relates to a device and method for electrolytic machining of the entire surface of a double-edge plate blade sandwich cathode with energization in a zoned manner, and belongs to the technical field of electrolytic machining. Background Art

[0002] The aircraft engine is the "heart" of the aircraft and is one of the most complex electromechanical products. Double-edge plate blades are the core components of aircraft engines. Their manufacturing accuracy and surface integrity directly affect the performance and service life of aircraft engines. Compared with conventional single-edge plate blades, double-edge plate blades include blade crowns in addition to blade body and tenon, and the structure is more complex. There are many types of blades of this type, and high processing accuracy and surface quality requirements are required. They are usually made of difficult-to-process materials such as titanium alloys, nickel-based high-temperature alloys, and TiAl intermetallic compounds. Precision and efficient manufacturing is very difficult, especially the precision and efficient manufacturing of the blade body, tenon, and blade crown integrated into one full-profile surface is even more difficult.

[0003] Electrochemical machining is a special processing technology based on the principle of electrochemical anode dissolution to achieve material removal. It has the inherent advantages of being independent of the mechanical properties of the anode workpiece material such as strength and hardness, no tool electrode loss, high processing efficiency, and good surface quality. It is very suitable for the precise and efficient manufacturing of aircraft engine blades. As a supplementary technology to traditional mechanical processing technology, electrochemical machining technology has become one of the preferred processing technologies for complex structural components of difficult-to-process materials in aircraft engines after years of development.

[0004] In traditional blade electrolytic machining, the blade basin tool cathode and the blade back tool cathode are fed toward each other at a certain feed speed, gradually approaching the blade body surface, and the blade body surface is gradually formed under the action of electrochemical normal dissolution. However, in this method, the tenon and blade crown surface of the double-edge plate blade do not have the feed component of the tool cathode, so that they are formed by side dissolution and continue to suffer from secondary electrochemical corrosion, resulting in poor machining accuracy and surface quality. Therefore, a new electrolytic machining process method is urgently needed, so that the blade body, tenon and blade crown surfaces all have feed components, that is, they are all formed by normal dissolution in the end, improving machining accuracy and surface quality.

[0005] In the patent "Integrated electrolytic forming method of integral blade disk with coordinated spatial rotation and translation motion" (application number 201910800505.9, applicant Nanjing University of Aeronautics and Astronautics, inventors Xu Zhengyang, Wang Jingtao, Wang Jing, Zhu Di), the electrolytic machining of the blade channel and blade profile of the integral blade disk uses the same tool cathode. Through the complex movement of the tool cathode and the complex movement of the integral blade disk, the integrated machining of the entire blade surface of the integral blade disk can be achieved.

[0006] In the article "An electrochemical machining method for aero-engine bladesbased on four-directional synchronous feeding of cathode tools" (author Jia Liu, Libing Hui, Dongqian Jia, Yan Liu, Di Zhu, Chinese Journal of Aeronautics, 2023, 36 (9): 380–391), a four-cathode four-directional feeding electrochemical machining method is proposed for the electrochemical machining of the blade basin, blade back, leading edge and trailing edge, which can achieve full-surface machining of the blade body.

[0007] In the patent "A method and electrolytic tool for integrated electrolytic processing of an integral blade disk" (application number 201911225268.4 applicant Hefei University of Technology, inventors Zhang Juchen Li Xinglin Chen Yuanlong Zhang Bin), an integrated tool cathode with a hollow thin-walled structure is used to achieve one-time forming of the blade basin, blade back and hub of the integral blade disk through multi-axis linkage of the workpiece and the tool cathode.

[0008] In the patent "Three-axis flexible feed blade electrolytic machining method" (application number 200610040556.9, applicant Nanjing University of Aeronautics and Astronautics, inventors Zhu Di, Xu Zhengyang and Shi Xianchuan), the full surface machining of single-edge plate blades can be achieved through three-axis flexible feed electrolytic machining of blades, blade basin cathodes and blade back cathodes.

[0009] In the patent "ELECTROCHEMICAL MACHINING METHOD AND ELECTROCHEMICAL MACHINING DEVICE" (application number 06780652.1 applicants IHI Corporation and APC Aerospecialty, inventor FUJIHARA Yasuo), two tool cathodes with different feed directions are used, and three sets of motion mechanisms are used to drive the two tool cathodes and blades to move in three directions, so that the full-surface processing of the two side edges and blade body of the double-edge blade can be achieved.

[0010] In the patent "MULTIPART ELECTRODE ARRAY AND METHOD FOR THE ELECTROCHEMICALTREATMENT OF BLADES HAVING SHROUDING BANDS" (patent number US 9682437 B2 applicant MTU AeroEngines AG, inventor Albin Platz Daniela Arbinger), three tool cathodes in contact with each other are used. Relative sliding motion is generated between the three of them through inclined surfaces with a certain inclination, so that the tool cathodes on both sides also have a feed component to the edges on both sides of the double-edge plate blade, thereby realizing full-surface processing of the double-edge plate blade body and the edges on both sides.

[0011] In the patent "An integrated molding processing method for integral blade disc processing" (application number 202311296512.2, applicant AVIC Shenyang Liming Aero Engine Co., Ltd., inventors Lan Yingduo, Shan Kun, Liang Qiaoyun, and Zhang Yashuang), three combined process schemes of abrasive water jet rough machining, electrolytic finishing, and sand belt adaptive polishing are adopted to realize the integrated processing method of the integral blade disc.

[0012] In the patent "Double-sided combined double cathode and segmented power controlled integral blade electrolytic processing method" (application number 202210306217.X applicant Nanjing University of Aeronautics and Astronautics, inventors Xu Zhengyang Shen Zhenyu Liu Jia Zhu Dong), through a pair of double-sided combined tool cathodes and two processing steps, the processing of the blade channel and blade body of the integral blade disc can be completed in sequence.

[0013] For double-edge blades, the blade crown and tenon profiles are almost perpendicular to the blade body profile, and are all spatially complex curved surfaces. The efficient and precise integrated manufacturing of the entire profile poses a great challenge to electrolytic machining. In response to the above difficulties, the present invention proposes a device and method for electrolytic machining of the entire profile of a double-edge blade sandwich cathode partitioned electrification. Summary of the invention

[0014] The purpose of the present invention is to overcome the problem that in traditional blade electrolytic machining, there is no feed component for the side wall edge plate profile of a double-edge plate blade, and efficient and precise manufacturing of the entire profile cannot be achieved. An innovative device and method for electrolytic machining of the entire profile of a double-edge plate blade with a sandwich cathode and partitioned energization is proposed. An integrated sandwich cathode is used, and through a reversing feed + partitioned energization mode, a set of fixtures, one clamping, and one machining process can achieve efficient and precise machining of the entire profile of the blade body and the edge plates on both sides of the double-edge plate blade, thereby greatly improving the machining efficiency and the machining accuracy of the edge plate profiles on both sides.

[0015] A double-edge plate blade sandwich cathode partitioned energized full-surface electrolytic machining device, characterized in that: it includes a blade basin sandwich cathode, a blade back sandwich cathode, and a double-edge plate blade electrolytic machining fixture; the above-mentioned blade basin sandwich cathode includes a blade basin side crown cathode, a blade basin cathode and a blade basin side tenon cathode; wherein the blade basin side crown cathode and the blade basin side tenon cathode are respectively located on the left and right sides of the blade basin sandwich cathode; the blade basin side crown cathode and the blade basin cathode are insulated from each other by a first left insulating layer, and the blade basin cathode and the blade basin side tenon cathode are insulated from each other by a first right insulating layer; the above-mentioned blade back sandwich cathode is composed of a blade back side crown cathode, a blade back cathode, and a blade back cathode. cathode and the tenon cathode on the back of the blade; wherein the blade crown cathode on the back of the blade and the tenon cathode on the back of the blade are respectively located on the left and right sides of the sandwich cathode on the back of the blade; the blade crown cathode on the back of the blade and the blade cathode on the back of the blade are insulated from each other by the second left insulating layer, and the blade back cathode and the tenon cathode on the back of the blade are insulated from each other by the second right insulating layer; the above-mentioned double-edge plate blade electrolytic processing fixture consists of a fixture cover, a fixture body, a blade basin side water sealing plate, a blade back side water sealing plate, a blade basin side tenon insulating plate, a blade back side tenon insulating plate, a tenon pressure block, a blade basin side blade crown insulating plate, a blade back side blade crown insulating plate, and a blade crown pressure block; the fixture cover is provided with an electrolyte inlet.

[0016] The method of the double-edge plate blade sandwich cathode partitioned energized full-surface electrolytic machining device is characterized in that it includes the following processes: 1) the blade basin sandwich cathode is installed on the Y1 axis on the left side of the machine tool, and the blade back sandwich cathode is installed on the Y2 axis on the right side of the machine tool; the double-edge plate blade electrolytic machining fixture is installed on the workbench above the X axis in the middle of the machine tool; the double-edge plate blade blank is installed in the double-edge plate blade electrolytic machining fixture and pressed, and then the tool is aligned, and a certain initial machining gap is left; 2) the blade basin cathode in the blade basin sandwich cathode and the blade back cathode in the blade back sandwich cathode are connected to the negative pole of the power supply, the other cathodes are in a power-off state, and the double-edge plate blade blank is connected to the positive pole of the power supply; 3) high-voltage and high-speed electrolyte flows into the machining area from the electrolyte inlet, covering the entire surface of the double-edge plate blade; 4) the power supply is started, the blade basin sandwich cathode and the blade back sandwich cathode are separated Driven by the Y1 axis and the Y2 axis of the machine tool, they are fed toward each other at a certain speed along the Y axis, gradually approaching the blade body, and the blade body surface is gradually formed under the action of electrochemical normal dissolution; 5) When the blade body surface processing is completed, the feeding direction of the blade basin sandwich cathode and the blade back sandwich cathode is automatically changed to the blade crown or tenon direction, that is, the X-axis direction. At the same time, the blade basin cathode and the blade back cathode are automatically powered off, and the blade basin side blade crown cathode or the blade basin side tenon cathode in the blade basin sandwich cathode, and the blade back side blade crown cathode or the blade back side tenon cathode in the blade back sandwich cathode are automatically transformed into the energized state, and the blade crown or tenon surface is gradually formed under the action of electrochemical normal dissolution; 6) When the blade crown and tenon processing is completed, the machine tool spindle stops, and the electrolytic processing of the blade body and the full-surface of the edge plates on both sides of the double-edge plate blade is completed, and the processing is ended; 7) Turn off the power supply and stop the electrolyte pump from supplying liquid.

[0017] Compared with the prior art, the present invention has the following significant advantages.

[0018] (1) Innovative tool cathode structure. The present invention innovatively designs an integrated sandwich cathode consisting of a blade crown cathode, a blade body cathode, a tenon cathode, and two insulating layers. The cathodes in the integrated sandwich cathode are insulated from each other, and power can be supplied to different areas. Only one set of fixtures and a pair of cathodes are needed to achieve efficient and precise electrolytic machining of the entire surface of a double-edge blade. The design and production cycle of the tool cathode and fixture is shortened, the processing cycle is reduced, and the production cost is reduced.

[0019] (2) Innovative electrolytic machining process. The present invention uses an integrated sandwich cathode reversing feed + partitioned power-on mode to enable the full profile of the double-edge plate blade to be formed by normal feed. One clamping and one machining process can achieve efficient and precise manufacturing of the blade body and the full profile of the two side edge plates of the double-edge plate blade. Repeated installation errors are avoided, and the machining efficiency and the machining quality of the two side edge plate profiles are greatly improved.

[0020] (3) Simple movement form. The present invention can realize full-surface processing of double-edge blades by linearly moving the integrated sandwich cathode in the Y-axis direction and the X-axis direction in sequence. The movement form is simple, the operation is convenient, and the practicality is good.

[0021] (4) It has a broad application scope and prospects. Aircraft engines contain a large number of double-edge blades of various types, and the demand for the integrated, efficient and precise manufacturing of the full-profile of double-edge blades is very urgent, which has a good application prospect. In addition, the processing device and process method proposed in the present invention can also be applied to the full-profile electrolytic processing of single-edge blades and other components through simple adjustments, and has a wide range of applications.

[0022] The described double-edge plate blade sandwich cathode partitioned electrification full-surface electrolytic machining device is characterized in that: the above-mentioned blade basin sandwich cathode and blade back sandwich cathode are each an integrated structure; that is, the blade basin side crown cathode, the blade basin cathode and the blade basin side tenon cathode are fixed to each other, but insulated from each other and powered on in partitions, and the power-on state matches the feed direction; the blade back side crown cathode, the blade back cathode and the blade back side tenon cathode are fixed to each other, but insulated from each other and powered on in partitions, and the power-on state matches the feed direction. Through the integrated sandwich cathode reversing feed + partitioned electrification mode, the full surface of the double-edge plate blade is finally formed by normal dissolution. The design of the tool cathode and fixture is simplified, and the processing cycle is greatly shortened.

[0023] The double-edge plate blade sandwich cathode partitioned electrification full-surface electrolytic machining device is characterized in that: there is a distance between the above-mentioned blade basin sandwich cathode and the blade basin side tenon insulation plate and the blade basin side blade crown insulation plate; there is a distance between the above-mentioned blade back sandwich cathode and the blade back side tenon insulation plate and the blade back side blade crown insulation plate. This can avoid the blade basin sandwich cathode and the blade back sandwich cathode from interfering with the fixture when they move along the X-axis direction to machine the blade crown or tenon profile.

[0024] The double-edge plate blade sandwich cathode partition electrification full-surface electrolytic machining device is characterized in that: the above-mentioned fixture upper cover is provided with multiple groups of electrolyte inlets, corresponding to the blade basin back processing area, blade basin side tenon processing area, blade basin side blade crown processing area, blade back side tenon processing area, and blade back side blade crown processing area. The flow field mode can be that the electrolyte covers the entire surface of the double-edge plate blade to avoid liquid-deficient areas; at the same time, the processing area is discretized into multiple small channels to enhance the flushing performance of the electrolyte and accelerate the removal of products.

[0025] The described double-edge plate blade sandwich cathode partitioned electrification full-surface electrolytic machining method is characterized by including the following process: when machining the blade basin and blade back profile, the blade basin side water sealing plate and the blade back side water sealing plate are fixed to the fixture body and do not move; when machining the blade crown or tenon profile, the blade basin side water sealing plate and the blade back side water sealing plate are respectively fixed to the blade basin sandwich cathode and the blade back sandwich cathode, and move along the X-axis direction with the blade basin sandwich cathode and the blade back sandwich cathode. This method can realize the reversing feeding of the integrated sandwich cathode, that is, it can continuously realize the processing of the blade body and the edge plate profiles on both sides. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is the three-dimensional assembly drawing of the double-edge blade sandwich cathode partition electrification full-surface electrolytic machining device; Figure 2 The three-dimensional internal structure diagram of the double-edge plate blade sandwich cathode partition electrification full-surface electrolytic machining device; Figure 3 is a three-dimensional model diagram of a sandwich cathode, wherein Figure (a) and Figure (b) are three-dimensional models of a blade back sandwich type and a blade basin sandwich type cathode, respectively; Figure 4 It is a schematic diagram of the electrolytic machining process of the double-edge blade sandwich cathode partition electrification full-surface; Names in the figure: 1. leaf basin sandwich cathode; 101. leaf basin side leaf crown cathode; 102. first left insulating layer; 103. leaf basin cathode; 104. first right insulating layer; 105. leaf basin side tenon cathode; 2. fixture cover; 3. electrolyte inlet storage chamber; 4. electrolyte inlet; 5. leaf back sandwich cathode; 501. leaf back side leaf crown cathode; 502. second left insulating layer; 503. leaf back shade Pole; 504, second right insulating layer; 505, cathode on the dorsal side of the blade; 6, fixture body; 7, water sealing plate on the side of the blade basin; 8, insulating plate on the dorsal side of the blade basin; 9, pressing block on the tenon; 10, double-edge plate blade; 11, insulating plate on the dorsal side of the blade; 12, water sealing plate on the dorsal side of the blade; 13, insulating plate on the dorsal side of the blade crown; 14, pressing block on the blade crown; 15, insulating plate on the dorsal side of the blade crown; 16, bubbles; 17, products. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings.

[0028] like Figure 1-4 As shown, the method for electrolytic machining of the double-edge blade sandwich cathode partition electrification full-surface proposed by the present invention mainly includes the following processes: 1) The blade basin sandwich cathode 1 is installed on the Y1 axis on the left side of the machine tool, and the blade back sandwich cathode 5 is installed on the Y2 axis on the right side of the machine tool; the double-edge plate blade electrolytic machining fixture is installed on the workbench above the X axis in the middle of the machine tool; the double-edge plate blade blank 10 is installed in the double-edge plate blade electrolytic machining fixture and pressed, and then the tool is set, and a certain initial machining gap is left; 2) The blade basin cathode 103 in the blade basin sandwich cathode 1 and the blade back cathode 503 in the blade back sandwich cathode 5 are connected to the negative pole of the power supply, the other cathodes are in a power-off state, and the double-edge blade blank 10 is connected to the positive pole of the power supply; 3) High-pressure and high-speed electrolyte flows into the processing area from the electrolyte inlet 4, covering the entire surface of the double-edge plate blade; 4) Start the power supply, and the blade basin sandwich cathode 1 and the blade back sandwich cathode 5 are respectively driven by the machine tool Y1 axis and the machine tool Y2 axis to feed toward each other at a certain speed along the Y axis, gradually approaching the blade body, and the blade body surface is gradually formed under the action of electrochemical normal dissolution; 5) When the blade body profile processing is completed, the feeding direction of the blade basin sandwich cathode 1 and the blade back sandwich cathode 5 is automatically changed to the blade crown or tenon direction, that is, the X-axis direction. At the same time, the blade basin cathode 103 and the blade back cathode 503 are automatically powered off, and the blade basin side blade crown cathode 101 or the blade basin side tenon cathode 105 in the blade basin sandwich cathode 1 and the blade back side blade crown cathode 501 or the blade back side tenon cathode 505 in the blade back sandwich cathode 5 are automatically turned into a powered state, and the blade crown or tenon profile is gradually formed under the action of electrochemical normal dissolution; 6) When the blade crown and tenon processing is completed, the machine tool spindle stops, the double-edge plate blade body and the full-surface electrolytic processing of the edge plates on both sides are completed, and the processing is finished; 7) Turn off the power supply and stop the electrolyte pump from supplying liquid.

Claims

1. A double-edge blade interlayer cathode partition electrification full-surface electrolytic machining device, characterized in that: It comprises a blade basin sandwich cathode (1), a blade back sandwich cathode (5), and a double-edge plate blade electrolytic processing fixture; The above-mentioned blade basin sandwich cathode (1) comprises a blade basin side blade crown cathode (101), a blade basin cathode (103) and a blade basin side tenon cathode (105); wherein the blade basin side blade crown cathode (101) and the blade basin side tenon cathode (105) are respectively located on the left and right sides of the blade basin sandwich cathode (1); the blade basin side blade crown cathode (101) and the blade basin cathode (103) are insulated from each other via a first left insulating layer (102), and the blade basin cathode (103) and the blade basin side tenon cathode (105) are insulated from each other via a first right insulating layer (104); The above-mentioned leaf back sandwich cathode (5) comprises a leaf back side leaf crown cathode (501), a leaf back cathode (503) and a leaf back side tenon cathode (505); wherein the leaf back side leaf crown cathode (501) and the leaf back side tenon cathode (505) are respectively located on the left and right sides of the leaf back sandwich cathode (5); the leaf back side leaf crown cathode (501) and the leaf back cathode (503) are insulated from each other via a second left insulating layer (502), and the leaf back cathode (503) and the leaf back side tenon cathode (505) are insulated from each other via a second right insulating layer (504); The above-mentioned double-edge plate blade electrolytic processing fixture consists of a fixture cover (2), a fixture body (6), a blade basin side water sealing plate (7), a blade back side water sealing plate (12), a blade basin side tenon insulation plate (8), a blade back side tenon insulation plate (11), a tenon upper pressing block (9), a blade basin side blade crown insulation plate (15), a blade back side blade crown insulation plate (13), and a blade crown upper pressing block (14); the fixture cover (2) is provided with an electrolyte inlet (4).

2. The double-edge blade interlayer cathode partitioned electrification full-surface electrolytic machining device according to claim 1 is characterized in that: The above-mentioned blade basin sandwich cathode (1) and blade back sandwich cathode (5) are each an integrated structure; that is, the blade basin side blade crown cathode (101), the blade basin cathode (103) and the blade basin side tenon cathode (105) are fixed to each other, but are insulated from each other and energized in different areas, and the energization state matches the feeding direction; the blade back side blade crown cathode (501), the blade back cathode (503) and the blade back side tenon cathode (505) are fixed to each other, but are insulated from each other and energized in different areas, and the energization state matches the feeding direction.

3. The double-edge blade interlayer cathode partitioned electrification full-surface electrolytic machining device according to claim 1 is characterized in that: There is a distance between the blade basin sandwich cathode (1) and the blade basin side tenon insulation plate (8) and the blade basin side blade crown insulation plate (15); there is a distance between the blade back sandwich cathode (5) and the blade back side tenon insulation plate (11) and the blade back side blade crown insulation plate (13).

4. The double-edge blade interlayer cathode partitioned electrification full-surface electrolytic machining device according to claim 1 is characterized in that: The clamp upper cover (2) is provided with a plurality of electrolyte inlets (4), which respectively correspond to the blade basin and blade back processing area, the blade basin side tenon processing area, the blade basin side blade crown processing area, the blade back side tenon processing area, and the blade back side blade crown processing area.

5. The method of the double-edge blade interlayer cathode partition electrification full-surface electrolytic machining device according to claim 1 is characterized in that The process includes: 1) The blade basin sandwich cathode (1) is installed on the Y1 axis on the left side of the machine tool, and the blade back sandwich cathode (5) is installed on the Y2 axis on the right side of the machine tool; the double-edge plate blade electrolytic machining fixture is installed on the workbench above the X axis in the middle of the machine tool; the double-edge plate blade blank (10) is installed in the double-edge plate blade electrolytic machining fixture and pressed, and then the tool is aligned, and a certain initial machining gap is left; 2) The blade basin cathode (103) in the blade basin sandwich cathode (1) and the blade back cathode (503) in the blade back sandwich cathode (5) are connected to the negative electrode of the power supply, the other cathodes are in a power-off state, and the double-edge blade blank (10) is connected to the positive electrode of the power supply; 3) High-pressure and high-speed electrolyte flows into the processing area from the electrolyte inlet (4), covering the entire surface of the double-edge plate blade; 4) starting the power supply, the blade basin sandwich cathode (1) and the blade back sandwich cathode (5) are respectively driven by the machine tool Y1 axis and the machine tool Y2 axis to feed toward each other at a certain speed along the Y axis, gradually approaching the blade body, and the blade body surface is gradually formed under the action of electrochemical normal dissolution; 5) When the blade body profile processing is completed, the feeding direction of the blade basin sandwich cathode (1) and the blade back sandwich cathode (5) is automatically changed in situ to the blade crown or tenon direction, that is, the X-axis direction. At the same time, the blade basin cathode (103) and the blade back cathode (503) are automatically powered off, and the blade basin side blade crown cathode (101) or the blade basin side tenon cathode (105) in the blade basin sandwich cathode (1) and the blade back side blade crown cathode (501) or the blade back side tenon cathode (505) in the blade back sandwich cathode (5) are automatically turned into a powered state, and the blade crown or tenon profile is gradually formed under the action of electrochemical normal dissolution; 6) When the blade crown and tenon processing is completed, the machine tool spindle stops, the double-edge plate blade body and the full-surface electrolytic processing of the edge plates on both sides are completed, and the processing is finished; 7) Turn off the power supply and stop the electrolyte pump from supplying liquid.

6. The method for electrolytic machining of the double-edge blade sandwich cathode partition electrification full-surface according to claim 5 is characterized in that The process includes: When processing the blade basin and blade back profiles, the blade basin side water sealing plate (7) and the blade back side water sealing plate (12) are fixed to the fixture body (6) and do not move; When machining the blade crown or tenon profile, the blade basin side water sealing plate (7) and the blade back side water sealing plate (12) are respectively fixed to the blade basin sandwich cathode (1) and the blade back sandwich cathode (5), and move along the X-axis direction with the blade basin sandwich cathode (1) and the blade back sandwich cathode (5).

Images