A high-performance blade electrolytic manufacturing device under a spiral flow field and a working method thereof

Abstract

The application discloses a high-performance blade electrolytic manufacturing device under a spiral flow field and a working method thereof and belongs to the technical field of electrolytic processing. The spiral flow channel can significantly reduce the shearing stress of the wall surface on the liquid and reduce the liquid flow resistance. The spiral flow channel is composed of multiple circular arcs with decreasing radii. Through the constraint and control effect of the spiral channel on the liquid, the liquid flow rate will continuously increase, the liquid enters the machining gap at a high flow rate, the problems of bubble blockage and electrolytic sludge accumulation existing in the traditional flow mode can be effectively solved, the high-performance titanium alloy blade can be machined in a single passivation electrolyte, the problems of difficult replacement of the traditional composite electrolyte and difficult manufacturing of the sealed clamp for machining the titanium alloy solution are solved, the process mode is simple, and the machining cost is low. The elastic insulating block can greatly reduce the stray current attack of the hole side wall of the sheet-shaped cathode on the surface of the blade to be machined, reduce the blade machining taper, and improve the blade forming precision.

Description

Technical Field

[0001] This invention belongs to the field of electrolytic processing technology, and in particular relates to a high-performance blade electrolytic manufacturing device and its working method under a spiral flow field. Background Technology

[0002] Aero engines are the "heart" of aircraft, and blades, as a key component of the overall internal structure of aero engines, have received widespread attention in the field of aviation manufacturing. When the engine operates in a high-altitude, low-pressure environment, even a single blade's substandard processing parameters can pose a serious safety hazard. Therefore, in the manufacturing process of high-performance blades, it is urgent to solve problems such as poor processing accuracy and consistency.

[0003] Electrolytic machining is an important special machining technology that shows unique advantages in the processing of conductive materials. During the machining process, the workpiece anode and the tool cathode are connected to the positive and negative terminals of the power supply, respectively. A high-flow-rate electrolyte is used to form a conductive circuit in the tiny machining gap. Based on the basic principle of electrochemical reaction, the anode material dissolves at the atomic scale.

[0004] Nesting electrochemical machining, a type of electrochemical machining, utilizes a hollow cathode with a pre-formed cathode blade profile. The entire contour of the workpiece is formed in a single pass through the cathode cavity. Cathode design and manufacturing are relatively simple. Because nesting electrochemical machining can directly achieve high-precision part forming by optimizing the cathode cavity size and shape, it features significant advantages such as large material removal, high processing efficiency, and easily controllable processing accuracy. Therefore, this machining method is widely used for machining straight-lined parts with uniform cross-sections. However, due to the positive flow field used in nesting electrochemical machining, the electrolyte entering the machining gap tends to disperse outwards. Uneven electrolyte flow is usually a major factor affecting machining accuracy and surface quality.

[0005] Titanium alloys are self-passivating metals, but they easily form a passivation film that hinders electrochemical reactions. Furthermore, the products and hydrogen bubbles generated during electrolysis tend to accumulate and clog processing gaps, making them difficult to flush away by the high-flow-rate electrolyte. This results in unstable gap current and flow field. In the electrolytic manufacturing process of high-performance blades, uneven electrolyte flow leads to uneven current density distribution on the blade's processed surface, making it difficult to guarantee processing accuracy and surface quality. Additionally, the non-processed area at the blade tip is susceptible to surface pitting due to stray current impacts, and unstable electrolyte flow can cause persistent short circuits.

[0006] In the field of electrochemical research, helical channels are commonly used to improve the performance and operational stability of proton exchange membrane (PEM) electrolyzers. In electrochemical research involving anodic electrochemical dissolution, researchers have addressed issues such as flow field divergence, short circuits, and poor forming accuracy during the electrochemical processing of irregularly shaped internal helical tubes by constructing an internal rotating flow field to make the electrolyte converge. While there are currently no reports on using helical channels to restrict liquid flow for the electrochemical manufacturing of high-performance blades to improve processing accuracy and surface quality, a novel technical solution is urgently needed to address this issue. Summary of the Invention

[0007] The technical problem to be solved by this invention is to provide a high-performance blade electrolytic manufacturing device and its working method under a spiral flow field to solve the technical problems of uneven flow field in the processing gap and easy short circuit, poor blade forming accuracy and low processing efficiency in the process of electrolytic machining of titanium alloys using a sleeve material; and the lack of reports on the use of spiral channels to restrict liquid flow for high-performance blade electrolytic manufacturing.

[0008] A high-performance blade electrolytic manufacturing device using a spiral flow field includes a machine tool body, which includes a pulse power supply system, a vertical column, a marble table, an internal electrolyte circulation system, and an inlet pipe connected to the internal electrolyte circulation system. The vertical column is installed on one side of the marble table, and the pulse power supply system is fixedly installed on the vertical column.

[0009] A high-performance blade electrolytic manufacturing device using a spiral flow field also includes a Z-axis motion control system, a combined cathode processing device, and an anode workpiece clamping system;

[0010] The anode workpiece clamping system includes a rotary table, a clamping assembly, an anode clamping nozzle, and an anode tooling fixture. The rotary table includes a fixed part and a rotating part, wherein the fixed part is fixedly installed on the upper part of the marble tabletop, and the clamping assembly is fixedly installed on the top of the rotating part and fixedly connected to the bottom of the anode tooling fixture through the clamping assembly. The anode workpiece is coaxially mounted at the center of the anode tooling fixture and fixed by the clamping nozzle and the anode clamping nozzle. The anode workpiece is connected to the positive terminal of the pulse power supply system. The anode clamping nozzle is connected to the negative terminal of the pulse power supply system.

[0011] The combined cathode processing device includes a cathode connection fixture, an internally threaded connecting sleeve, a stainless steel cathode body, an inner cavity insulator, an elastic insulating block, an outer cavity insulator, and a sheet cathode.

[0012] The upper part of the cathode connection fixture is fixedly connected to the Z-axis motion control system, and the lower part of the cathode connection fixture is fixedly connected to the stainless steel cathode body through an internal threaded connecting sleeve; the stainless steel cathode body is provided with a wedge-shaped keyway inside; the upper part of the inner cavity insulator is provided with a wedge-shaped protrusion that matches the wedge-shaped keyway, and the upper part of the inner cavity insulator is inserted into the stainless steel cathode body and positioned by the wedge-shaped keyway.

[0013] The outer cavity insulator has an electrolyte inlet and an electrolyte outlet on its sidewall. The inner sidewall of the outer cavity insulator has an annular flow channel connected to the electrolyte inlet and outlet along the circumferential direction. At the same time, a spiral flow channel is also provided at the bottom of the outer cavity insulator. The inlet and outlet of the spiral flow channel are respectively connected to the annular flow channel. The spiral flow channel is composed of four arcs with decreasing radii connected sequentially from the inlet to the outlet.

[0014] The elastic insulating block has a through hole in the middle, and a raised baffle is provided on the outer edge of the through hole. A hollow cavity is formed inside the baffle. The upper part of the elastic insulating block contacts the lower part of the inner cavity insulator, and the lower edge of the elastic insulating block contacts the inner bottom surface of the outer cavity insulator. After the baffle of the elastic insulating block passes through the spiral flow channel, the hollow cavity matches the inner hole contour of the sheet cathode, and the baffle fits around the inner hole of the sheet cathode. The baffle has a through hole for the electrolyte to pass through on the flow direction side of the spiral flow channel.

[0015] The outer cavity insulator is provided with a lifting threaded hole on its side wall. The outer cavity insulator is fitted onto the outside of the stainless steel cathode body and is fixedly connected to the stainless steel cathode body through the lifting threaded hole and bolts.

[0016] The lower part of the sheet cathode outer cavity insulator is connected to the threaded hole on the bottom surface of the stainless steel cathode body by a set screw passing through the through holes on the sheet cathode, the outer cavity insulator and the elastic insulating block in sequence.

[0017] The main control panel of the machine tool body controls the Z-axis motion control system to move the entire combined cathode processing device, and the main control panel of the machine tool body controls the drive part of the rotating part to drive the anode tooling fixture to rotate.

[0018] The clamping assembly includes a three-jaw chuck and a clamping base. The lower part of the clamping base is fixedly connected to the rotating part, and the upper part of the clamping base is fixedly connected to the three-jaw chuck. The three-jaw chuck clamps the bottom of the anode tooling fixture.

[0019] The upper part of the cathode connection fixture is fixedly connected to the Z-axis motion control system via a clamping assembly II; the clamping assembly II includes a fixture base II and a three-jaw chuck II; the upper part of the fixture base II is fixedly connected to the Z-axis motion control system, and the lower part of the fixture base II is fixedly connected to the three-jaw chuck II; the three-jaw chuck II clamps the cathode connection fixture.

[0020] The spiral flow channel is a channel manufactured inside the outer cavity insulator using 3D printing technology.

[0021] A method for operating a high-performance blade electrolytic manufacturing apparatus under a spiral flow field, comprising the following steps, performed sequentially:

[0022] Step 1: Cut the titanium alloy anode workpiece to be processed into round bars with a diameter of 20mm and a height of 20mm. Grind and polish the pre-processed surface and use an ultrasonic cleaner to remove impurities from the surface of the anode workpiece.

[0023] Step 2: Install the anode workpiece clamping system and the combined cathode processing device in sequence, and connect them to the positive and negative terminals of the pulse power supply system respectively. Connect the liquid inlet pipe to the electrolyte inlet on the side wall of the outer cavity insulator. Start the pulse power supply system. If there are no error messages on the machine tool's operation display screen, you can proceed to the next step.

[0024] Step 3: Open the control interface of the Z-axis motion control system on the operation display screen of the machine tool body, set the Z-axis moving speed, press the Z-axis moving button, and the Z-axis motion control system drives the combined cathode machining device to approach the anode workpiece. The tool setting action is performed at medium and low speeds. The position where a weak current signal is generated in the circuit formed by the sheet cathode (307) and the anode workpiece (7) is taken as the machining origin. The tool is raised 0.2mm as the initial machining gap between the sheet cathode and the anode workpiece.

[0025] Step 4: Import the machining program code into the main control panel of the machine tool body and set the machining parameters. The machining parameters include the machining voltage of the combined cathode machining device, the feed speed of the Z-axis motion control system, the pulse time of the pulse power supply system, and the electrolyte pressure applied to the outer cavity insulator by the internal electrolyte circulation system of the machine tool.

[0026] Step 5: Start machining. Apply pulsed electricity between the combined cathode machining device and the anode workpiece. The Z-axis motion control system feeds downwards according to the feed speed, driving the combined cathode machining device closer to the anode workpiece. At the same time, the internal electrolyte circulation system of the machine tool body pumps high-velocity electrolyte into the electrolyte inlet of the outer cavity insulator through the inlet pipe. Under the action of gravity, the electrolyte flows along the annular flow channel of the outer cavity insulator and then enters from the inlet end of the spiral flow channel. After flowing rapidly along the two side walls of the spiral flow channel through the areas on both sides of the blade base and blade back, part of the electrolyte flows out from the trailing edge of the blade and then flows out through the annular flow channel and electrolyte outlet in sequence. The other part of the electrolyte is directly discharged from the gap of the blade end face. Maintain a stable machining state until the machining height of the anode workpiece reaches the set value, and the machining ends.

[0027] Step 6: The combined cathode machining device returns to the initial position of the machine tool body through the Z-axis motion control system, disassembles the anode workpiece, the combined cathode machining device and the anode workpiece clamping system, cleans the internal machining area of ​​the machine tool with deionized water, and shuts off the pulse power supply system.

[0028] Through the above design scheme, the present invention can bring the following beneficial effects:

[0029] 1. The spiral flow channel proposed in this invention can significantly reduce the shear stress on the wall surface of the liquid and reduce the liquid flow resistance. The design of the spiral flow channel is based on the Fibonacci spiral. From the inlet of the spiral channel to the processing gap, the channel is composed of multiple arcs with radii ranging from large to small. Through the constraint and control effect of the spiral channel on the liquid, the liquid flow velocity will continuously increase. At the same time, the spiral flow channel extends the liquid flow path. Compared with the traditional transverse flow field, the liquid enters the processing gap at a higher flow velocity, which can effectively solve the problems of bubble blockage and electrolytic sludge accumulation in the traditional flow mode. It realizes the processing of high-performance titanium alloy blades in a single passivation electrolyte, and solves the problems of difficulty in changing the solution and manufacturing of sealing fixtures in the traditional composite electrolyte processing of titanium alloys. The process is simple and the processing cost is low.

[0030] 2. The elastic insulating block can significantly reduce the stray current attack on the surface of the blade to be processed by the inner wall of the plate cathode, reduce the blade processing taper, and improve the blade forming accuracy.

[0031] 3. Compared with the traditional transverse flow field of front and rear edge liquid supply, the spiral flow field improves the electrolyte flow, solves the problem of electrolysis products and hydrogen bubbles accumulating or blocking the processing gap, improves processing stability, and improves the surface quality of the processed surface, which has certain engineering application value. Attached Figure Description

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0033] Figure 1 This is a schematic diagram of the processing device in the high-performance blade electrolytic manufacturing device and its working method under a spiral flow field according to the present invention.

[0034] Figure 2 This is a schematic diagram of the combined cathode processing device in the high-performance blade electrolytic manufacturing device and its working method under a spiral flow field of the present invention.

[0035] Figure 3 This is a partially enlarged view of the stainless steel cathode, inner cavity insulator, and elastic insulating block in the high-performance blade electrolytic manufacturing device and its working method under a spiral flow field according to the present invention.

[0036] Figure 4This is a schematic diagram of the spiral flow channel structure of the outer cavity insulator cross section in the high-performance blade electrolytic manufacturing device and its working method under a spiral flow field of the present invention.

[0037] Figure 5 This is a schematic diagram of the liquid flow after the outer cavity insulator is cut during the operation of the high-performance blade electrolytic manufacturing device and its working method under a spiral flow field according to the present invention.

[0038] In the diagram: 1-Machine tool body, 2-Z-axis motion control system, 3-Combined cathode processing device, 4-Inlet pipe, 5-Anode workpiece clamping system, 6-Rotary worktable, 7-Anode workpiece, 10-Anode clamp locking nozzle, 11-Anode tooling fixture, 101-Pulse power supply system, 102-Vertical column, 103-Marble tabletop, 301-Cathode connection fixture, 302-Internal threaded connection sleeve, 303-Stainless steel cathode body, 304-Inner cavity insulator, 305-Elastic insulating block, 306-Outer cavity insulator, 307-Sheet cathode, 308-Set screw, 501-Three-jaw chuck, 502-Clamping base, 701-Electrolyte inlet, 702-Lifting threaded hole, 703-Spiral flow channel, 704-Electrolyte outlet, 705-Annular flow channel. Detailed Implementation

[0039] This invention addresses the engineering challenges of manufacturing high-performance blades in the aerospace field, with the primary objective of improving blade machining accuracy and surface quality. Existing research indicates that helical flow fields exhibit excellent performance in improving fuel cell performance; however, research on the machining of prototypes with specific structures and functions is limited. Furthermore, existing research constructs an internal rotating flow field by arranging liquid passages at a certain angle around the cathode body to improve the uniformity of electrolyte flow in the machining area. This invention is the first to propose using helical channels for the electrolytic manufacturing of high-performance blades, directly restricting liquid flow by constructing helical channels, resulting in a simple process.

[0040] The specific solution is as follows: a high-performance blade electrolytic manufacturing device under a spiral flow field, such as... Figures 1-5 As shown, the machine tool body 1, Z-axis motion control system 2, combined cathode processing device 3, internal electrolyte circulation system of the machine tool and liquid inlet pipe connected to the internal electrolyte circulation system of the machine tool 4, anode workpiece clamping system 5, rotary table 6, anode workpiece 7, anode clamping nozzle 10, and anode tooling fixture 11.

[0041] The machine tool body 1 serves as the platform for mounting and fixing the high-performance blade electrolytic manufacturing device under a spiral flow field. It includes a pulse power supply system 101, a vertical column 102, and a marble table 103. The vertical column 102 is installed on one side of the marble table 103 and connected to the machine tool body. The pulse power supply system 101 is fixedly installed on the vertical column 102. The internal electrolyte circulation system of the machine tool pumps electrolyte into the outer cavity insulator 306 through the liquid inlet pipe 4.

[0042] The combined cathode processing device 3 is fixed under the Z-axis motion control system 2, and the feed and retraction movements of the combined cathode processing device 3 are realized through the Z-axis motion control system 2. The combined cathode processing device 3 includes a cathode connecting fixture 301, an internal threaded connecting sleeve 302, a stainless steel cathode body 303, an inner cavity insulator 304, an elastic insulating block 305, an outer cavity insulator 306, a sheet cathode 307, and a set screw 308. The stainless steel cathode body 303 is connected to the bottom surface of the cathode connecting fixture 301 through the internal threaded connecting sleeve 302. A stainless steel wrench can drive the internal locking position of the three-jaw chuck II at the top of the fixture base II to move, thereby realizing the positioning and installation of the cathode connecting fixture 301 with the Z-axis motion control system 2. The inner cavity insulator 304 is connected to the stainless steel cathode body 303 through the inner threaded connecting sleeve 302. The surface wedge-shaped keyway achieves positioning; the elastic insulating block 305 has a through hole in the middle, and a raised baffle is provided on the outer edge of the through hole. A hollow cavity is formed inside the baffle. The upper part of the elastic insulating block 305 contacts the lower part of the inner cavity insulator 304, and the lower edge of the elastic insulating block 305 contacts the inner bottom surface of the outer cavity insulator 306. After the baffle of the elastic insulating block 305 passes through the spiral flow channel 703, the hollow cavity matches the outline size of the inner hole of the sheet cathode 307, and the baffle fits around the inner hole of the sheet cathode 307. The baffle has a through hole for the electrolyte to pass through on the flow direction side of the spiral flow channel 703.

[0043] Lifting threaded holes 702 are arranged at 120° intervals on the side walls of the outer cavity insulator 306 and the stainless steel cathode body 303. After the outer cavity insulator 306 is fitted with the elastic insulating block 305 and the inner cavity insulator 304, the stainless steel cathode body 303 and the outer cavity insulator 306 are fixedly connected by three M10 bolts. The outer cavity insulator 306 has an electrolyte inlet 701 and an electrolyte outlet 704 on its outer sidewall. The inner sidewall of the outer cavity insulator 306 has an annular flow channel 705 that communicates with the electrolyte inlet 701 and the electrolyte outlet 704. At the same time, the inner bottom of the outer cavity insulator 306 also has a spiral flow channel 703. The spiral flow channel 703 is a channel manufactured inside the outer cavity insulator 306 by 3D printing technology. The spiral flow channel 703 is composed of four arcs with decreasing radii connected in sequence from the inlet to the outlet. The inlet and outlet of the spiral flow channel 703 are directly connected to the annular flow channel 705, which together form the internal liquid flow channel of the outer cavity insulator 306.

[0044] The sheet cathode 307 is fitted and installed on the bottom surface of the outer cavity insulator 306. The anode workpiece 7 is fixed to the anode tooling fixture 11 by the external thread of the anode clamp locking mouth 10. The automatic pull stud below the anode tooling fixture 11 passes through the connecting hole at the center of the top of the rotary table 6 through interference fit and is positioned by the three-jaw chuck 501. The cathode connecting fixture 301 and the anode fixture 11 have high axial positioning accuracy, ensuring that the combined cathode processing device 3 can be aligned with the center of the processing area of ​​the anode workpiece 7.

[0045] The anode workpiece clamping system 5 includes a rotary table 6, a clamping assembly, an anode clamping nozzle 10, and an anode tooling fixture 11. The rotary table 6 includes a fixed part and a rotating part, wherein the fixed part is fixedly installed on the upper part of the marble tabletop 103, and the clamping assembly is fixedly installed on the top of the rotating part and is fixedly connected to the bottom of the anode tooling fixture 11 through the clamping assembly. The anode workpiece 7 is coaxially mounted at the center of the anode tooling fixture 11 and fixed by the clamping nozzle and the anode clamping nozzle 10. The anode workpiece 7 is connected to the positive terminal of the pulse power supply system 101 through the threaded hole provided at the bottom of the anode tooling fixture 11. The anode clamping nozzle 10 is connected to the negative terminal of the pulse power supply system 101.

[0046] The clamping assembly includes a three-jaw chuck 501 and a clamping base 502. The lower part of the clamping base 502 is fixedly connected to the rotating part, and the upper part of the clamping base 502 is fixedly connected to the three-jaw chuck 501. The three-jaw chuck 501 clamps the bottom of the anode tooling fixture 11.

[0047] A method for operating a high-performance blade electrolytic manufacturing apparatus under a spiral flow field, comprising the following steps, performed sequentially:

[0048] Step 1: Cut the titanium alloy anode workpiece 7 to be processed into round bars with a diameter of 20mm and a height of 20mm. Grind and polish the pre-processed surface and use an ultrasonic cleaner to remove impurities from the surface of the anode workpiece 7.

[0049] Step 2: Install the anode clamping system 5 and the combined cathode processing device 3 in sequence, and connect them to the positive and negative terminals of the pulse power supply system 101 respectively. Connect the liquid inlet pipe 4 to the electrolyte inlet 701 on the side wall of the outer cavity insulator 306. Start the pulse power supply system 101. If there are no error messages on the operation display screen of the machine tool body 1, you can proceed to the next step.

[0050] Step 3: Open the control interface of the Z-axis motion control system 2 on the operation display screen of the machine tool body 1, set the Z-axis movement speed, press the Z-axis movement button on the operation panel, so that the Z-axis motion control system 2 drives the combined cathode processing device 3 to quickly approach the anode workpiece 7, and perform tool setting action at medium and low speeds. Set the short circuit position between the sheet cathode 307 and the anode workpiece 7 as the processing origin, and raise the tool 0.2mm upward as the initial processing gap between the sheet cathode 307 and the anode workpiece 7.

[0051] Step 4: Import the machining program code into the main control panel of the machine tool body 1 and set the machining parameters. The machining parameters include the machining voltage of the combined cathode machining device 3, the feed speed of the Z-axis motion control system 2, the pulse time of the pulse power supply system 101, and the electrolyte pressure applied to the outer cavity insulator 306 by the electrolyte circulation system 4. The machining voltage is set to 16V, the feed speed is 0.2mm / min, the pulse time is 5ms, and the inlet pressure of the electrolyte inlet 208 is 300kpa.

[0052] Step 5: Start machining. Apply a pulse voltage of 16V between the combined cathode machining device 3 and the anode workpiece 7. The Z-axis motion control system 2 feeds downward at a feed rate of 0.2mm / min, driving the combined cathode machining device 3 to continuously approach the anode workpiece 7. At the same time, the internal electrolyte circulation system of the machine tool body 1 pumps high-velocity electrolyte into the electrolyte inlet 701 of the outer cavity insulator 306 through the inlet pipe 4. Under the action of gravity, the electrolyte moves downward along the annular flow channel 705 on the inner wall of the outer cavity insulator, and then enters from the inlet of the spiral flow channel 703. After flowing rapidly along the two side walls of the spiral flow channel 703 through the areas on both sides of the blade base and blade back, part of the electrolyte flows out from the trailing edge of the blade and then passes through the annular flow channel 705 and the electrolyte outlet 704 in sequence. The other part of the electrolyte is discharged directly from the gap at the blade end face. Maintain a stable machining state until the machining height of the anode workpiece reaches 5mm, and the machining ends.

[0053] Step 6: After processing is completed, the combined cathode processing device 3 returns to the zero position of the machine through the Z-axis motion control system, disassembles the anode workpiece 7, the combined cathode processing device 3 and the anode clamping system 5, cleans the internal processing area of ​​the machine tool body 1 with deionized water, and shuts off the pulse power supply system 101.

Claims

1. A high-performance blade electrolytic manufacturing device using a spiral flow field, comprising a machine tool body (1), wherein the machine tool body (1) includes a pulse power supply system (101), a vertical column (102), a marble table (103), an internal electrolyte circulation system, and an inlet pipe (4) connected to the internal electrolyte circulation system; the vertical column (102) is installed on one side of the marble table (103); the pulse power supply system (101) is fixedly installed on the vertical column (102); characterized in that: It also includes a Z-axis motion control system (2), a combined cathode processing device (3), and an anode workpiece clamping system (5); The anode workpiece clamping system (5) includes a rotary table (6), a clamping assembly, an anode clamping nozzle (10), and an anode tooling fixture (11). The rotary table (6) includes a fixed part and a rotating part. The fixed part is fixedly installed on the upper part of the marble tabletop (103), and the clamping assembly is fixedly installed on the top of the rotating part and is fixedly connected to the bottom of the anode tooling fixture (11) through the clamping assembly. The anode workpiece (7) is coaxially installed at the center of the anode tooling fixture (11) and fixed by the clamping nozzle and the anode clamping nozzle (10). The anode workpiece (7) is connected to the positive terminal of the pulse power supply system (101). The anode clamping nozzle (10) is connected to the negative terminal of the pulse power supply system (101). The combined cathode processing device (3) includes a cathode connection clamp (301), an internal threaded connection sleeve (302), a stainless steel cathode body (303), an inner cavity insulator (304), an elastic insulating block (305), an outer cavity insulator (306), and a sheet cathode (307). The upper part of the cathode connection fixture (301) is fixedly connected to the Z-axis motion control system (2), and the lower part of the cathode connection fixture (301) is fixedly connected to the stainless steel cathode body (303) through the internal threaded connecting sleeve (302); the stainless steel cathode body (303) is provided with a wedge-shaped keyway inside; the upper part of the inner cavity insulator (304) is provided with a wedge-shaped protrusion that matches the wedge-shaped keyway, and the upper part of the inner cavity insulator (304) is inserted into the stainless steel cathode body (303) and positioned by the wedge-shaped keyway; The outer cavity insulator (306) has an electrolyte inlet (701) and an electrolyte outlet (704) on its outer sidewall. The outer cavity insulator (306) has an electrolyte inlet (701) and an electrolyte outlet (704) on its sidewall. The outer cavity insulator (306) has an annular flow channel (705) connected to the electrolyte inlet (701) and the electrolyte outlet (704) in the circumferential direction on its inner sidewall. The outer cavity insulator (306) also has a spiral flow channel (703) at its inner bottom. The inlet and outlet of the spiral flow channel (703) are connected to the annular flow channel (705). The spiral flow channel (703) is composed of four arcs with decreasing radii connected sequentially from the inlet to the outlet. The elastic insulating block (305) has a through hole in the middle, and a raised baffle is provided on the outer edge of the through hole. A hollow cavity is formed inside the baffle. The upper part of the elastic insulating block (305) contacts the lower part of the inner cavity insulator (304), and the lower edge of the elastic insulating block (305) contacts the inner bottom surface of the outer cavity insulator (306). After the baffle of the elastic insulating block (305) passes through the spiral flow channel (703), the hollow cavity matches the inner hole contour of the sheet cathode (307), and the baffle fits around the inner hole of the sheet cathode (307). The baffle has a through hole for the electrolyte to pass through on the flow direction side of the spiral flow channel (703). The outer cavity insulator (306) is provided with a lifting threaded hole (702) on its side wall. The outer cavity insulator (306) is fitted onto the outside of the stainless steel cathode body (303) and is fixedly connected to the stainless steel cathode body (303) through the lifting threaded hole (702) and bolts. The sheet cathode (307) is located at the lower part of the outer cavity insulator (306) and is connected to the bottom threaded hole of the stainless steel cathode body (303) by passing through the through holes on the sheet cathode (307), the outer cavity insulator (306) and the elastic insulating block (305) in sequence by the set screw (308). The main control panel of the machine tool body (1) controls the Z-axis motion control system (2) to drive the entire combined cathode processing device (3) to move. The main control panel of the machine tool body (1) controls the drive part of the rotating part to drive the anode tooling fixture (11) to rotate.

2. The high-performance blade electrolytic manufacturing apparatus using a spiral flow field as described in claim 1, characterized in that: The clamping assembly includes a three-jaw chuck (501) and a clamping base (502). The lower part of the clamping base (502) is fixedly connected to the rotating part, and the upper part of the clamping base (502) is fixedly connected to the three-jaw chuck (501). The three-jaw chuck (501) clamps the bottom of the anode tooling fixture (11).

3. The high-performance blade electrolytic manufacturing apparatus using a spiral flow field as described in claim 1, characterized in that: The upper part of the cathode connection fixture (301) is fixedly connected to the Z-axis motion control system (2) via a clamping assembly II; the clamping assembly II includes a fixture base II and a three-jaw chuck II; the upper part of the fixture base II is fixedly connected to the Z-axis motion control system (2), and the lower part of the fixture base II is fixedly connected to the three-jaw chuck II; the three-jaw chuck II clamps the cathode connection fixture (301).

4. The high-performance blade electrolytic manufacturing device using a spiral flow field as described in claim 1, characterized in that: The spiral flow channel (703) is a channel manufactured inside the outer cavity insulator (306) using 3D printing technology.

5. A method for operating a high-performance blade electrolytic manufacturing device using a spiral flow field, comprising the high-performance blade electrolytic manufacturing device using a spiral flow field as described in claim 1, characterized in that: Including the following step, And the following steps are performed in sequence: Step 1: Cut the titanium alloy anode workpiece (7) to be processed into round bars with a diameter of 20mm and a height of 20mm. Grind and polish the pre-processed surface and use an ultrasonic cleaner to remove impurities from the surface of the anode workpiece (7). Step 2: Install the anode workpiece clamping system (5) and the combined cathode processing device (3) in sequence, and connect them to the positive and negative terminals of the pulse power supply system (101) respectively. Connect the liquid inlet pipe (4) to the electrolyte inlet (701) on the side wall of the outer cavity insulator (306). Start the pulse power supply system (101). If there is no error message on the operation display screen of the machine tool body (1), you can proceed to the next step. Step 3: Open the control interface of the Z-axis motion control system (2) on the operation display screen of the machine tool body (1), set the Z-axis moving speed, press the Z-axis moving button, and the Z-axis motion control system (2) drives the combined cathode processing device (3) to approach the anode workpiece (7) and perform tool setting action at medium and low speeds. Take the position where a weak current signal is generated in the circuit formed by the sheet cathode (307) and the anode workpiece (7) as the processing origin, and lift the tool up 0.2mm as the initial processing gap between the sheet cathode (307) and the anode workpiece (7); Step 4: Import the machining program code into the main control panel of the machine tool body (1) and set the machining parameters. The machining parameters include the machining voltage of the combined cathode machining device (3), the feed speed of the Z-axis motion control system (2), the pulse time of the pulse power supply system (101), and the electrolyte pressure applied to the inner cavity insulator (306) by the internal electrolyte circulation system of the machine tool. Step 5: Start processing. Apply pulsed electricity between the combined cathode processing device (3) and the anode workpiece (7). The Z-axis motion control system (2) feeds downward according to the feed speed and drives the combined cathode processing device (3) to approach the anode workpiece (7). At the same time, the electrolyte circulation system inside the machine tool body (1) pumps high-speed electrolyte from the electrolyte inlet (701) to the annular flow channel (705) through the inlet pipe (4). The electrolyte enters the lower spiral flow channel (703) under the action of gravity and flows quickly along the two walls of the spiral flow channel (703) through the areas on both sides of the blade back. After that, part of the electrolyte flows out from the trailing edge of the blade and then passes through the annular flow channel (705) and the electrolyte outlet (704) in sequence. The other part of the electrolyte is discharged directly from the gap at the end face of the blade. The processing is maintained in a stable state until the processing height of the anode workpiece (7) reaches the set value, and the processing ends. Step 6: The combined cathode processing device (3) retracts to the initial position of the machine tool body (1) through the Z-axis motion control system (2), disassembles the anode workpiece (7), the combined cathode processing device (3) and the anode workpiece clamping system (5), cleans the internal processing area of ​​the machine tool with deionized water, and shuts off the pulse power supply system (101).

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