Double-cathode and double-liquid-supply diffuser blade nesting electrolysis device and machining method

Abstract

According to the double-cathode and double-liquid-supply diffuser blade nesting electrolysis device and the machining method, double-channel liquid supply is adopted, liquid is supplied to the whole molded surface of a blade through a main channel, meanwhile, liquid is supplied to the blade basin direction and the blade back direction of the blade through an auxiliary channel, the flow of a machining area is greatly increased, a low-speed area is reduced, product discharging is facilitated, and the machining efficiency is improved. The processing stability is improved. Besides, double cathodes are adopted, when the main cathode corrodes the blade surface, the auxiliary cathode is used for removing the allowance distributed in the blade basin direction and the blade back direction at the same time, short circuit caused by the fact that the wedge block is clamped between the cathodes and a workpiece after root breaking is prevented, machining stability is improved, and machining efficiency is improved. The problem that the processing stability is poor due to short-circuit burn of the diffuser in the trepanning electrolysis process is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of diffuser casing electrolysis, and more specifically, to a dual-cathode, dual-liquid supply diffuser blade casing electrolysis device and a processing method. Background Art

[0002] As the core component of the compressor, the diffuser is generally a thin-walled part, mostly made of difficult-to-process materials such as high-temperature alloys, with a large diameter and a large number of blades arranged in the circumferential direction. The diffuser has an important impact on the performance of the engine, so its processing accuracy is required to be high. The electrolytic machining of the sleeve has the advantages of high processing efficiency, no cathode loss, no cutting force, and no influence on the cutting performance of the material, and has become one of the main manufacturing methods for the diffuser.

[0003] During the electrolytic machining of the piercing, it is necessary to introduce a high-speed flowing electrolyte into the area to be processed. The uniformity and accessibility of the electrolyte in the processing area are closely related to the processing quality. When processing multi-bladed disk parts such as diffusers or blade disks, the processing of the blades, blade basins, and blade backs is involved. The circulation area of ​​the electrolyte is wide, and the uniformity and accessibility of the electrolyte are difficult to adjust. At the same time, during the electrolytic machining of the piercing of the diffuser blades, it is also necessary to take into account the corrosion state of the area between adjacent blades. The corrosion progress in this area will affect the stability of the overall processing, but in most cases, the processing conditions in this area are not taken seriously. In the CN107570818A blade trailing edge insoluble piercing electrolytic machining device and its processing method, it is disclosed that an insulating block is provided on the front end face of the cathode, and the insulating block is in contact with the non-processed surface of the cathode, thereby realizing the three-sided processing of the leading edge, blade basin, and blade back of the blade. In addition, a liquid blocking block is slidably connected in the sealing box, and a protective cavity for processed blades is provided inside the liquid blocking block. During the processing, the protective cavities of the two liquid blocking blocks are always sheathed on the processed adjacent blades, effectively avoiding stray corrosion of the processed adjacent blades. This patent controls the electrolyte flow field from the tip to the root of the blade through the processing area by adjusting the gap size between the liquid blocking block and the cathode, ensuring that the processing area is filled with high-speed flowing electrolyte, and improving the uniformity and accessibility of the flow field. This patent adjusts the uniformity of the flow field through the liquid blocking block, and the electrolyte flows through the processing area from the tip to the root of the blade, which can ensure that it flows to the sharp corner or edge position, ensuring the uniformity and accessibility of the flow field during the electrolytic processing of the sheathing. However, during the electrolytic processing of a single blade sheathing, due to the large removal margin of the blade basin and the back of the blade, although the electrolyte can reach it, the flow is insufficient, and short-circuit burns are prone to occur. In addition, this patent focuses on the three-sided processing of the leading edge, blade basin and back of a single blade, ignoring the corrosion of the area between adjacent blades. During the actual electrolytic machining of adjacent blades, wedge-shaped blocks will appear in the middle of the adjacent blades and near the blade tips. After the wedge-shaped blocks are broken, they may be washed by the electrolyte to the space between the cathode and the workpiece, forming a short circuit and affecting the machining stability. Summary of the invention

[0004] The main technical problem to be solved by the present invention is to provide a dual-cathode, dual-liquid supply diffuser blade casing electrolysis device in view of the short circuit burning of the prior art diffuser during the casing electrolysis process, which leads to poor processing stability.

[0005] Another technical problem solved by the present invention is to provide a dual-cathode, dual-liquid supply electrolytic processing method for diffuser blade sleeves.

[0006] The purpose of the present invention is achieved through the following technical solutions:

[0007] A dual-cathode, dual-liquid supply diffuser blade jacket electrolysis device, comprising a cathode assembly, the cathode assembly comprising a main shaft connection block, a connection plate, a liquid guide sleeve, a connection block and a cathode, the main shaft connection block is connected to the connection plate, the connection block is connected to the connection plate, the liquid guide sleeve is arranged in the inner cavity of the connection block and connected to the connection plate, and the cathode is connected to the connection block;

[0008] The liquid inlet of the main shaft connection block is connected to the liquid inlet cavity, a through hole 1 is provided on the connection plate to connect to the main channel of the liquid guide sleeve, a through hole 2 is also provided on the connection plate to connect to the secondary channel of the liquid guide sleeve, and the channel outlet of the secondary channel is connected to the flow channel of the main channel;

[0009] The cathode comprises a main cathode and a secondary cathode. The main cathode is arranged at the end of the liquid guide sleeve and connected to the connection block, and the secondary cathode is arranged on the side wall of the connection block.

[0010] Furthermore, the dual-cathode, dual-liquid supply diffuser blade jacket electrolysis device also includes an anode assembly, which includes a base, a guide cylinder, a spring, a support column, an anode seat and a pressure plate. The base is provided with a guide cylinder, and the guide cylinder is provided with a spring and a support column. The support column is provided with an anode seat, and the pressure plate is connected to the base to compress the diffuser.

[0011] Furthermore, the main channel is a straight flow channel, and the channel outlet of the main channel is arranged at the end of the liquid guide sleeve; the secondary channel is arranged on the side of the main channel, and the channel outlet of the secondary channel is connected to the flow channel of the main channel, so as to replenish the electrolyte in the flow channel of the main channel close to the processing area and increase the flow rate. Specifically, the channel outlet of the secondary channel is close to the processing area, the path is short, the loss is small, the flow rate is high, and the liquid replenishment effect is better.

[0012] Furthermore, the outlet of the secondary channel is located between the front and rear edges of the blade to supply liquid to the blade body. The length of the secondary channel is close to the length of the blade body, and the width is not less than 1 mm.

[0013] Furthermore, the number of the secondary channels is not less than two.

[0014] Furthermore, the auxiliary cathode includes an auxiliary cathode 1 and an auxiliary cathode 2, and the auxiliary cathode 1 and the auxiliary cathode 2 are arranged opposite to each other on the side wall of the connecting block.

[0015] Furthermore, the main shaft connecting block, connecting plate, connecting block and cathode are made of metal materials, and the liquid guiding sleeve is made of insulating material.

[0016] Furthermore, the spindle connection block is connected to the machine tool spindle, and the machine tool spindle is connected to the negative pole of the power supply, so that the cathode is negatively charged.

[0017] Furthermore, the base guide cylinder, spring, support column, anode seat and pressure plate are made of metal materials.

[0018] Furthermore, the base is connected to the positive pole of the power supply so that the anode seat is positively charged. Furthermore, the anode seat is connected to the positive pole of the power supply for auxiliary power supply.

[0019] A dual-cathode, dual-liquid supply diffuser blade casing electrolytic machining method, the steps comprising:

[0020] S1. Install a connecting plate at the end of the liquid inlet cavity of the main shaft connecting block, install a connecting block on the connecting plate, connect the liquid guide sleeve to the connecting plate through the inner cavity of the connecting block, and align the main channel and the secondary channel on the liquid guide sleeve with the through hole 1 and the through hole 2 on the connecting plate respectively, set a main cathode at the end of the liquid guide sleeve, and connect the cathode to the connecting block, and fit the secondary cathode to the side wall of the connecting block to complete the assembly of the cathode assembly;

[0021] S2. The diffuser is mounted on the base and fixed with a pressure block, a guide cylinder is installed at the edge of the diffuser of the base, a spring and a support column are provided in the guide cylinder, an anode seat is provided on the support column, and the assembly of the anode assembly is completed;

[0022] S3. Connect the cathode assembly's spindle connection block to the negative electrode of the power supply so that the negative electrode is negatively charged, and at the same time, the electrolyte is input into the liquid inlet cavity of the spindle connection block, and the base of the anode assembly is connected to the positive electrode of the power supply so that the anode seat is positively charged;

[0023] S4. Control the cathode to feed the diffuser, and the electrolyte enters the main channel and the sub-channel from the liquid inlet cavity respectively. The electrolyte in the main channel supplies liquid to the entire surface of the blade, and the electrolyte in the sub-channel supplements the supply of liquid to the blade basin and the back of the blade. The electrolyte flows out of the liquid outlet channel through the gap between the main cathode and the diffuser; at the same time, the main cathode at the end of the liquid guide sleeve electrolytically corrodes the diffuser blade surface, and the sub-cathode on the side wall removes the excess corrosion between the blades.

[0024] Furthermore, the pressure of the electrolyte is 1.5-2 MPa, and the feeding speed is 2.5-5 mm / min.

[0025] Compared with the prior art, the beneficial effects are:

[0026] The present invention adopts dual-channel liquid supply. While the main channel supplies liquid to the entire blade surface, the secondary channel replenishes liquid to the blade basin and the back of the blade, which greatly improves the flow rate in the processing area, reduces the low-speed area, is conducive to product discharge, and improves processing stability. In addition, the present invention adopts dual cathodes. When the main cathode corrodes the blade surface, the secondary cathode is used to remove the excess distributed in the blade basin and the back of the blade. While the blade is electrolytically processed by the jacketing, the wedge block is corroded to prevent the wedge block from being stuck between the cathode and the workpiece after breaking off and causing a short circuit, which is conducive to improving processing stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the diffuser jacket electrolysis tooling;

[0028] Figure 2 It is a schematic diagram of dual liquid supply and dual cathode;

[0029] Figure 3 These are the simulation results of single-liquid supply and double-liquid supply flow fields.

[0030] Figure 4 It is a comparison of the low-speed flow area of ​​the single-liquid supply and double-liquid supply flow field simulation;

[0031] a is a schematic diagram of a single-liquid-supply flow field, and b is a schematic diagram of a dual-liquid-supply flow field.

[0032] Among them, 1. main shaft connecting block, 2. liquid inlet, 3. connecting plate, 4. liquid guide sleeve, 5. connecting block, 6. main cathode, 7. blades, 8. diffuser, 9. pressure plate, 10. copper ring, 11. support column, 12. spring, 13. guide cylinder, 14. base, 15. liquid inlet cavity, 16. main channel, 17. auxiliary cathode 1, 18. auxiliary channel, 19. liquid outlet channel, 20. auxiliary cathode 2. DETAILED DESCRIPTION

[0033] The present invention will be further explained and illustrated below in conjunction with the embodiments, but the specific embodiments do not limit the present invention in any form.

[0034] Example 1

[0035] The present embodiment provides a dual-cathode, dual-liquid supply diffuser blade jacket electrolysis device, comprising a cathode assembly, wherein the cathode assembly comprises a connecting block 6, a main shaft connecting block 61, a connecting plate 3, a liquid guide sleeve 4, a connecting block 6 and a cathode, wherein the connecting block 6, the main shaft connecting block 61 is connected to the connecting plate 3, the connecting block 6 is connected to the connecting plate 3, the liquid guide sleeve 4 is disposed in the inner cavity of the connecting block 6 and is connected to the connecting plate 3, and the cathode is connected to the connecting block 6;

[0036] The liquid inlet 2 of the connecting block 6 main shaft connecting block 61 is connected to the liquid inlet cavity 15, the connecting plate 3 is provided with a through hole 1 connected to the main channel 16 of the liquid guide sleeve 4, the connecting plate 3 is also provided with a through hole 2 connected to the secondary channel 18 of the liquid guide sleeve 4, and the channel outlet of the secondary channel is connected to the flow channel of the main channel;

[0037] The cathode includes a main cathode 6 and a secondary cathode. The main cathode 6 is arranged at the end of the liquid guide sleeve 4 and connected to the connecting block 6 , and the secondary cathode is arranged on the side wall of the connecting block 6 .

[0038] Example 2

[0039] The present embodiment provides a dual-cathode, dual-liquid supply diffuser blade casing electrolysis device, including a cathode assembly and an anode assembly.

[0040] The cathode assembly includes a connecting block 6, a main shaft connecting block 61, a connecting plate 3, a liquid guide sleeve 4, a connecting block 6 and a cathode, wherein the connecting block 6, the main shaft connecting block 61 is connected to the connecting plate 3, the connecting block 6 is connected to the connecting plate 3, the liquid guide sleeve 4 is arranged in the inner cavity of the connecting block 6 and connected to the connecting plate 3, and the cathode is connected to the connecting block 6;

[0041] The liquid inlet 2 of the connecting block 6 main shaft connecting block 61 is connected to the liquid inlet cavity 15, the connecting plate 3 is provided with a through hole 1 connected to the main channel 16 of the liquid guide sleeve 4, the connecting plate 3 is also provided with a through hole 2 connected to the secondary channel 18 of the liquid guide sleeve 4, and the channel outlet of the secondary channel is connected to the flow channel of the main channel;

[0042] The cathode includes a main cathode 6 and a secondary cathode. The main cathode 6 is arranged at the end of the liquid guide sleeve 4 and connected to the connecting block 6 , and the secondary cathode is arranged on the side wall of the connecting block 6 .

[0043] The anode assembly includes a base 14, a guide cylinder 13, a spring 12, a support column 11, an anode seat and a pressure plate 9. The base 14 is provided with a guide cylinder 13, a spring 12 and a support column 11 are arranged in a concave cavity of the guide cylinder 13, a copper ring 10 is arranged on the support column 11, and the pressure plate 9 is connected to the base 14 to compress the diffuser 8.

[0044] Example 3

[0045] The present embodiment provides a dual-cathode, dual-liquid supply diffuser blade casing electrolysis device, including a cathode assembly and an anode assembly.

[0046] The cathode assembly includes a connecting block 6, a main shaft connecting block 61, a connecting plate 3, a liquid guide sleeve 4, a connecting block 6 and a cathode. The connecting block 6 is provided with a liquid inlet 2 on the main shaft connecting block 61 and connected to its liquid inlet cavity 15. The end of the liquid inlet cavity 15 is provided with a connecting plate 3, and the connecting plate 3 is provided with a through hole 1 and a through hole 2. The connecting block 6 is connected to the connecting plate 3, the connecting block 6 is hollow, the liquid guide sleeve 4 is placed in the inner cavity of the connecting block 6 and connected to the connecting plate 3, the main channel 16 and the secondary channel 18 on the liquid guide sleeve 4 are aligned with the through hole 1 and the through hole 2 respectively, and the main channel 16 of the liquid guide sleeve 4 is also provided with a secondary channel 18 1 and a secondary channel 18 2 on both sides, the secondary channel is arranged on the side of the main channel 16, the channel outlet of the secondary channel is connected to the main channel 16, and the channel outlet of the secondary channel is close to the processing area, the path is short, the loss is small, the flow rate is high, and the liquid replenishment effect is better. The end of the liquid guide sleeve 4 is provided with a main cathode 6 and connected to the connecting block 6, and the outer wall of the connecting block 6 is provided with a secondary cathode.

[0047] The anode assembly includes a base 14, a guide cylinder 13, a spring 12, a support column 11, an anode seat and a pressure plate 9. A positioning circle is provided at the center of the base 14. A pressure block is provided at the center of the positioning circle and is connected to the base 14 to compress the diffuser 8. A plurality of guide cylinders 13 are provided around the positioning circle of the base 14. A spring 12 and a support column 11 are provided in a concave cavity of the guide cylinder 13. A copper ring 10 is provided on the support column 11.

[0048] The connecting block 6, the main shaft connecting block 61 is connected to the negative pole of the power supply, and the main cathode 6 and the auxiliary cathode are negatively charged through the connecting plate 3 and the connecting block 6. The base 14 is connected to the positive pole of the power supply, so that the copper ring 10 is positively charged. At the same time, the copper ring 10 is connected to the positive pole of the power supply for auxiliary power supply.

[0049] Example 4

[0050] The present embodiment provides a dual-cathode, dual-liquid supply diffuser blade casing electrolysis device, including a cathode assembly and an anode assembly.

[0051] The cathode assembly comprises a connecting block 6, a main shaft connecting block 61, a connecting plate 3, a liquid guide sleeve 4, a connecting block 6 and a cathode. A liquid inlet 2 is provided on the connecting block 6, the main shaft connecting block 61 is connected to its liquid inlet cavity 15, a connecting plate 3 is provided at the end of the liquid inlet cavity 15, and a through hole 1 and a through hole 2 are provided on the connecting plate 3. The connecting block 6 is connected to the connecting plate 3, the connecting block 6 is hollow, the liquid guide sleeve 4 is placed in the inner cavity of the connecting block 6 and connected to the connecting plate 3, the main channel 16 and the secondary channel 18 on the liquid guide sleeve 4 are aligned with the through hole 1 and the through hole 2 respectively, the end of the liquid guide sleeve 4 is provided with a main cathode 6 and connected to the connecting block 6, and the outer wall of the connecting block 6 is provided with a secondary cathode.

[0052] The liquid guide sleeve 4 is provided with a straight main channel 16 to provide electrolyte for processing the blade 7. The main channel 16 of the liquid guide sleeve 4 is also provided with a secondary channel 18-1 and a secondary channel 18-2 on both sides. The secondary channel 18-1 and the secondary channel 18-2 are arranged on both sides of the main channel 16. The channel outlet of the secondary channel is connected with the main channel 16, and the channel outlet of the secondary channel is close to the processing area. Specifically, the outlet of the secondary channel is located between the front and rear edges of the blade to supply liquid to the blade body. The length of the secondary channel is approximately the same as the length of the blade body, and the width is not less than 1mm. Liquid is supplemented in the direction of the blade basin and the back of the blade 7. The secondary cathode includes a secondary cathode 17 and a secondary cathode 20. The secondary cathode 17 and the secondary cathode 20 are arranged on the side wall of the connecting block 6 opposite to each other, and the excess in the direction of the blade basin and the back of the blade between the distributed blades 7 is removed.

[0053] The anode assembly includes a base 14, a guide cylinder 13, a spring 12, a support column 11, an anode seat and a pressure plate 9. A positioning circle is provided at the center of the base 14. A pressure block is provided at the center of the positioning circle and is connected to the base 14 to compress the diffuser 8. A plurality of guide cylinders 13 are provided around the positioning circle of the base 14. A spring 12 and a support column 11 are provided in a concave cavity of the guide cylinder 13. A copper ring 10 is provided on the support column 11.

[0054] The connecting block 6, the main shaft connecting block 61 is connected to the negative pole of the power supply, and the main cathode 6 and the auxiliary cathode are negatively charged through the connecting plate 3 and the connecting block 6. The base 14 is connected to the positive pole of the power supply, so that the copper ring 10 is positively charged. At the same time, the copper ring 10 is connected to the positive pole of the power supply for auxiliary power supply.

[0055] Example 5

[0056] This embodiment provides a processing method based on the dual-cathode, dual-liquid supply diffuser blade jacket electrolysis device described in Embodiment 1, and the steps include:

[0057] S1. A connecting plate 3 is installed at the end of the liquid inlet cavity 15 of the connecting block 6 main shaft connecting block 61, and the connecting block 6 is installed on the connecting plate 3. The liquid guide sleeve 4 is connected to the connecting plate 3 through the inner cavity of the connecting block 6, and the main channel 16 and the secondary channel 18 on the liquid guide sleeve 4 are respectively aligned with the through hole 1 and the through hole 2 on the connecting plate 3. A main cathode 6 is arranged at the end of the liquid guide sleeve 4, and the cathode is connected to the connecting block 6, and the secondary cathode is fitted and connected to the side wall of the connecting block 6, and the cathode assembly is completed;

[0058] S2. The diffuser 8 is mounted on the base 14 and fixed with a pressure block, and a guide cylinder 13 is installed at the edge of the diffuser 8 of the base 14. The guide cylinder 13 is provided with a spring 12 and a support column 11, and an anode seat is provided on the support column 11 to complete the assembly of the anode assembly;

[0059] S3. Connect the cathode assembly's connecting block 6 and the spindle connecting block 61 to the negative electrode of the power source, so that the negative electrode is negatively charged, and the electrolyte is input into the liquid inlet cavity 15 of the connecting block 6 and the spindle connecting block 61, and connect the base 14 of the anode assembly to the positive electrode of the power source, so that the anode seat is positively charged;

[0060] S4. Control the cathode to feed the diffuser 8 at a speed of 2.5 mm / min, set the electrolyte pressure to 2 MPa, and the electrolyte enters the main channel 16 and the secondary channel 18 from the liquid inlet chamber 15 respectively. The electrolyte in the main channel 16 supplies liquid to the entire surface of the blade 7, and the electrolyte in the secondary channel 18 supplements the supply of liquid to the blade basin and the back of the blade 7. The electrolyte flows out to the liquid outlet channel 19 through the gap between the main cathode 6 and the diffuser 8; at the same time, the main cathode 6 at the end of the liquid guide sleeve 4 electrolytically corrodes the blade surface of the diffuser 8, and the secondary cathode on the side wall removes the excess corrosion between the blades 7.

[0061] Example 6

[0062] This embodiment provides a comparative experiment of single liquid supply and dual liquid supply. The single liquid supply and dual liquid supply flow field simulation models are established respectively. The same liquid inlet pressure and liquid outlet pressure are set to ensure that the parameters used are consistent. The simulation experiment is carried out. The experimental results are as follows: Figures 3-4 As shown in the figure, when only the main water channel is used for liquid supply, there are more low-speed areas at the blade basin and blade back of the blade body. When the secondary water channel is used for liquid supply, the low-speed area is significantly reduced and tends to disappear. Therefore, dual liquid supply can better increase the electrolyte flow rate and flow velocity, quickly discharge the erosion products generated by electrolytic machining, and improve machining stability.

[0063] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A dual-cathode, dual-liquid supply diffuser blade jacket electrolysis device, characterized in that: The cathode assembly includes a main shaft connection block, a connection plate, a liquid guide sleeve, a connection block and a cathode, wherein the main shaft connection block is connected to the connection plate, the connection block is connected to the connection plate, the liquid guide sleeve is arranged in the inner cavity of the connection block and connected to the connection plate, and the cathode is connected to the connection block; The liquid inlet of the main shaft connection block is connected to the liquid inlet cavity, a through hole 1 is provided on the connection plate to be connected to the main channel of the liquid guide sleeve, a through hole 2 is also provided on the connection plate to be connected to the secondary channel of the liquid guide sleeve, and the channel outlet of the secondary channel is connected to the flow channel of the main channel; The cathode comprises a main cathode and a secondary cathode. The main cathode is arranged at the end of the liquid guide sleeve and connected to the connection block, and the secondary cathode is arranged on the side wall of the connection block.

2. The dual-cathode, dual-liquid supply diffuser blade jacket electrolysis device according to claim 1, characterized in that: It also includes an anode assembly, which includes a base, a guide cylinder, a spring, a support column, an anode seat and a pressure plate. The base is provided with a guide cylinder, a spring and a support column are provided in the guide cylinder, an anode seat is provided on the support column, and the pressure plate is connected to the base to compress the diffuser.

3. The dual-cathode, dual-liquid supply diffuser blade jacket electrolysis device according to claim 1, characterized in that: The main channel is a straight flow channel, and the channel outlet of the main channel is arranged at the end of the liquid guide sleeve; the secondary channel is arranged on the side of the main channel, and the channel outlet of the secondary channel is connected to the flow channel of the main channel.

4. The dual-cathode, dual-liquid supply diffuser blade jacket electrolysis device according to claim 1, characterized in that: The number of the secondary channels is not less than two.

5. The dual-cathode, dual-liquid supply diffuser blade jacket electrolysis device according to claim 1, characterized in that: The auxiliary cathode comprises an auxiliary cathode 1 and an auxiliary cathode 2, and the auxiliary cathode 1 and the auxiliary cathode 2 are arranged oppositely on the side wall of the connection block.

6. The dual-cathode, dual-liquid supply diffuser blade jacket electrolysis device according to claim 1, characterized in that: The main shaft connecting block, connecting plate, connecting block and cathode are made of metal materials, and the liquid guide sleeve is made of insulating material.

7. The dual-cathode, dual-liquid supply diffuser blade jacket electrolysis device according to claim 6, characterized in that: The spindle connection block is connected to the machine tool spindle, and the machine tool spindle is connected to the negative pole of the power supply.

8. The dual-cathode, dual-liquid supply diffuser blade jacket electrolysis device according to claim 2, characterized in that: The base, guide cylinder, spring, support column, anode seat and pressing plate are made of metal materials.

9. The dual-cathode, dual-liquid supply diffuser blade jacket electrolysis device according to claim 8, characterized in that: The base is connected to the positive pole of the power supply.

10. A dual-cathode, dual-liquid supply diffuser blade casing electrolytic machining method, characterized in that: Steps include; S1. Install a connecting plate at the end of the liquid inlet cavity of the main shaft connecting block, install a connecting block on the connecting plate, connect the liquid guide sleeve to the connecting plate through the inner cavity of the connecting block, and align the main channel and the secondary channel on the liquid guide sleeve with the through hole 1 and the through hole 2 on the connecting plate respectively, set a main cathode at the end of the liquid guide sleeve, and connect the cathode to the connecting block, and fit the secondary cathode to the side wall of the connecting block to complete the assembly of the cathode assembly; S2. The diffuser is mounted on the base and fixed with a pressure block, a guide cylinder is installed at the edge of the diffuser of the base, a spring and a support column are provided in the guide cylinder, an anode seat is provided on the support column, and the assembly of the anode assembly is completed; S3. Connect the cathode assembly's spindle connection block to the negative electrode of the power supply so that the negative electrode is negatively charged, and at the same time, the electrolyte is input into the liquid inlet cavity of the spindle connection block, and the base of the anode assembly is connected to the positive electrode of the power supply so that the anode seat is positively charged; S4. Control the cathode phase diffuser feed, the electrolyte enters the main channel and the sub-channel from the liquid inlet cavity respectively, the electrolyte in the main channel supplies liquid to the entire surface of the blade, the electrolyte in the sub-channel supplements the supply to the blade basin and the back of the blade, and the electrolyte flows out to the liquid outlet channel through the gap between the main cathode and the diffuser; at the same time, the main cathode at the end of the liquid guide sleeve electrolytically corrodes the diffuser blade surface, and the sub-cathode on the side wall removes the excess corrosion between the blades.

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