Blisk molded surface electrolytic machining device and method for balancing blade stress through lateral fluid infusion

Abstract

The invention provides a blisk profile electrolytic machining device and method for balancing blade stress through lateral liquid supplementing, the device is divided into a blade basin cathode tool body and a blade back cathode tool body, and each tool body is provided with a main liquid supply flow channel and two balance flushing liquid supply flow channels. The main liquid supply flow channel supplies liquid to the blade machining area from the blade tip of the blade. And the balanced stress liquid supply flow channel is used for supplementing liquid to the processing areas on the two sides of the blade tip of the blisk blade in front of the blade processing area. And the blade back cathode tool body, the blade basin cathode tool body and the blisk form a closed flow field mode in which electrolyte in each flow channel is independently controlled. The flow direction of the flow channel electrolyte is from the blade tip to the blade root, and the blade deformation is corrected by utilizing the balance flushing liquid supply flow channel, so that the uniformity and the stability of a flow field are improved, and the blade machining precision is ensured. By means of the technical scheme, the technical problem that in the prior art, a blade tip is prone to being impacted by high-voltage electrolyte to deform, and machining is unstable is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of electrolytic machining, and in particular to a device and method for electrolytic machining of an integral blade disk profile with lateral liquid replenishment and balanced blade force. Background Art

[0002] The blisk is a new type of aerospace engine component. By integrating the blades and the disk, the tenon and the mortise are replaced by a locking plate to simplify the engine structure, reduce weight, and enhance reliability. Since the blisk is usually made of difficult-to-process materials, the blades are ultra-thin and twisted, the curvature of the blade inlet and exhaust edges changes sharply, the channel between two adjacent blades is narrow, and the technical requirements such as accuracy and surface quality are also very demanding, the processing of the blisk is very difficult.

[0003] Electrolytic machining is based on the principle of anodic dissolution of metal in electrolyte to remove materials. During machining, the workpiece is shaped using a pre-formed cathode. Electrolytic machining is a non-contact process that is not affected by mechanical properties such as hardness and toughness of the processed material. There is no cutting force, no tool loss, and high batch production efficiency. It has been widely used in aerospace, weapons and other industries, and has become the mainstream manufacturing method for difficult-to-process materials and complex-shaped workpieces in aerospace engines at home and abroad.

[0004] A stable flow field is the basis for realizing electrolytic machining of blisk blades. Reasonable flow field design can promptly remove the electrolytic products and the heat generated during the machining process, and improve the uniformity of electrolyte distribution. Regarding the flow field pattern of electrolytic machining of integral blade disks, Nanjing University of Aeronautics and Astronautics proposed a flow field pattern of full-contour liquid supply for blades (see patent "Device and method for electrolytic machining of integral blade disks with full-contour liquid supply for blades" application number 202010730223.9, applicant Nanjing University of Aeronautics and Astronautics, inventors Zhu Dong, Guo Jianwei, and Zhu Di). This flow field pattern adds electrolyte supply from the intake side and the exhaust side on the basis of the flow from the root to the tip of the blade, thereby improving the uniformity of the flow field in the machining area; Nanjing University of Aeronautics and Astronautics proposed a three-dimensional composite flow field pattern (see patent "Device and method for electrolytic machining of integral blade disk profile based on three-dimensional composite flow field" application number 201300453340.8, applicant Nanjing University of Aeronautics and Astronautics, inventors Liu Jiawan, Longkai, Xu Zhengyang, and Zhu Dong). This flow field pattern has a composite liquid supply from the intake side to the exhaust side and from the root to the tip of the blade, which effectively solves the problem of uneven electrolyte diversion in the side flow field; the above-mentioned flow field patterns are relatively complex, and the design of tooling and fixtures is complex. For the electrolytic machining of the blade surface of the integral blade disk, the flow mode of the electrolyte from the blade tip to the blade root is relatively simple. However, at the final forming moment of the blade, since the blade belongs to a cantilever beam structure, the blade tip is easily deformed by the impact of the high-voltage electrolyte, causing unstable processing. It is necessary to design an improvement in the flow mode from the blade tip to the blade root to form a set of convenient, fast and effective flow field patterns suitable for the integral blade disk. Summary of the invention

[0005] The present invention provides a device and method for electrolytic machining of an integral blade disk profile with lateral liquid replenishment and balanced blade force, which can solve the technical problem in the prior art that the blade tip is easily deformed by the impact of high-voltage electrolyte, causing machining instability.

[0006] According to one aspect of the present invention, a device for electrolytic machining of an integral blade disk profile with lateral liquid replenishment and balanced blade force is provided. The device for electrolytic machining of an integral blade disk profile with lateral liquid replenishment and balanced blade force includes a blade basin cathode, a blade basin cathode tooling body, a blade back cathode and a blade back cathode tooling body; the area between the blade basin of a blade to be machined and the blade back of an adjacent blade is called a blade basin cathode channel, the blade basin cathode is located in the blade basin cathode channel, the blade basin cathode tooling body is located below the blade basin cathode channel of the blade to be machined and is connected to the blade basin cathode; the area between the blade back of a blade to be machined and the blade basin of an adjacent blade is called a blade back cathode channel, the blade back cathode Located in the blade back cathode channel, the blade back cathode tooling body is located below the blade back cathode channel and is connected to the blade back cathode; the electrolytic machining device includes two electrolyte flow channels, namely: a main liquid supply flow channel for supplying liquid to the blade processing area, a balanced force supply flow channel specially used for supplying liquid to the processing areas on both sides of the blade tip, and for flushing liquid on both sides of the blade tip at the final forming moment; the main liquid supply flow channel includes a blade basin liquid inlet flow channel, a blade back liquid inlet flow channel, a blade basin processing area and a blade back processing area, the blade basin liquid inlet channel is arranged in the blade basin cathode tooling body, the blade back liquid inlet flow channel is arranged in the blade back cathode tooling body, the blade basin cathode has a blade basin cathode processing surface, and the blade The basin processing area is the area formed between the blade basin cathode processing surface and the blade basin to be processed, the blade back cathode has a blade back cathode processing surface, the blade back processing area is the area formed between the blade back cathode processing surface and the blade back to be processed, the blade basin liquid inlet flow channel is used to supply liquid to the blade basin processing area, and the blade back liquid inlet flow channel is used to supply liquid to the blade back processing area; the balanced force supply flow channel includes a first balanced force supply flow channel, a second balanced force supply flow channel, a third balanced force supply flow channel and a fourth balanced force supply flow channel, and the blade basin processing area is divided into a blade basin tip upper side processing area and a blade basin tip along the blade basin tip direction. The lower processing area and the back processing area are divided into the upper processing area of ​​the blade basin tip and the lower processing area of ​​the blade basin tip along the direction of the blade back tip. The first balanced force liquid supply flow channel (4) is located in the blade basin cathode clamp body, and supplies liquid to the upper processing area of ​​the blade back tip; the second balanced force liquid supply flow channel is located in the blade basin cathode clamp body, and supplies liquid to the lower processing area of ​​the blade back tip; the third balanced force liquid supply flow channel is located in the blade back cathode clamp body, and supplies liquid to the upper processing area of ​​the blade basin tip; the fourth balanced force liquid supply flow channel is located in the blade back cathode clamp body, and supplies liquid to the lower processing area of ​​the blade basin tip.

[0007] Furthermore, the blade basin cathode and the blade basin cathode tooling body are an integrated structure, and the blade back cathode and the blade back cathode tooling body are an integrated structure.

[0008] According to another aspect of the present invention, a method for electrolytic machining of an integral blade disk surface with lateral liquid replenishment to balance the blade force is provided. The method for electrolytic machining of an integral blade disk surface with lateral liquid replenishment to balance the blade force uses the electrolytic machining device for electrolytic machining of an integral blade disk surface with lateral liquid replenishment to balance the blade force as described above to perform electrolytic machining of the integral blade disk surface.

[0009] Furthermore, the electrolytic machining method for the integral blade disk profile with lateral liquid replenishment and balanced blade force includes: before the start of machining, the blade basin cathode and the blade back cathode are respectively inserted into the blade basin cathode channel and the blade back cathode channel under the drive of the blade basin cathode tooling body and the blade back cathode tooling body, and enter the machining position; the liquid inlet pressures of the two liquid inlets of the blade basin liquid inlet channel and the blade back liquid inlet channel in the main liquid supply flow channel are the same; the pressures of the four balanced force liquid supply flow channels are the same, but higher than the liquid inlet pressures of the blade basin liquid inlet channel and the blade back liquid inlet channel, so as to ensure that the electrolyte in the blade machining area is uniform; the main liquid supply flow channel The electrolyte flow direction in the four balanced force supply channels is from the blade tip to the blade root; at the beginning of processing, the blade basin cathode and the blade back cathode are respectively driven by the blade basin cathode tooling body and the blade back cathode tooling body to feed toward each other to realize blade surface processing; after processing, the blade basin cathode and the blade back cathode retreat to a safe distance, and the entire blade disk retreats to a safe distance. After rotating a certain angle, the blade basin cathode and the blade back cathode return to the processing position to process the next blade, and the above process is repeated to finally complete the forming processing of all blades of the entire blade disk.

[0010] Furthermore, by passing liquid only through the first balanced force liquid supply channel and the second balanced force liquid supply channel, the electrolyte flow rate on the back side of the blade can be increased, thereby correcting the tendency of the back side of the blade to deform when the blade is finally formed.

[0011] Furthermore, by passing liquid only through the third balanced force liquid supply channel and the fourth balanced force liquid supply channel, the electrolyte flow rate on the blade basin side can be increased, thereby correcting the tendency of the blade basin side to deform when the blade is finally formed.

[0012] Furthermore, by passing liquid only through the first balanced force liquid supply flow channel and the fourth balanced force liquid supply flow channel, the electrolyte flow rate in the upper processing area of ​​the blade tip and the lower processing area of ​​the blade tip and the blade basin can be increased to correct the clockwise twisting deformation tendency of the blade tip when the blade is finally formed.

[0013] Furthermore, by passing liquid only through the second balanced force liquid supply flow channel and the third balanced force liquid supply flow channel, the electrolyte flow rate in the lower processing area of ​​the blade tip and the upper processing area of ​​the blade tip and the blade basin can be increased to correct the counterclockwise twisting deformation tendency of the blade tip when the blade is finally formed.

[0014] According to another aspect of the present invention, there is provided a computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the electrolytic machining method for the integral blade disk profile with lateral liquid replenishment and balanced blade force as described above.

[0015] According to another aspect of the present invention, a computer-readable storage medium is provided, which stores a computer program. When the computer program is executed by a processor, the steps of the electrolytic machining method of the integral blade disk surface with lateral liquid replenishment and balanced blade force are implemented as described above.

[0016] The technical solution of the present invention provides an electrolytic machining device for the profile of an integral blade disk with lateral liquid replenishment and balanced blade force. The device can correct the deformation of the blade at the final forming moment of the electrolytic machining of the integral blade disk, ensure the blade forming accuracy, improve the stability of the electrolyte flow field, and prevent the blade deformation from causing machining accidents to a certain extent. The integrated cathode tooling design improves the machining efficiency and realizes the stable machining of the integral blade disk. Compared with the prior art, the electrolytic machining device for the profile of an integral blade disk with lateral liquid replenishment and balanced blade force provided by the present invention has the following advantages:

[0017] First, a lateral liquid replenishment method is proposed to balance the blade force on the integral blade disk surface electrolytic machining flow field, so as to correct the blade deformation at the final forming moment of the integral blade disk electrolytic machining blade, ensure the blade forming accuracy, improve the stability of the electrolyte flow field, prevent blade deformation and processing accidents to a certain extent, and improve the processing efficiency.

[0018] Secondly, of the two flow channels, the main liquid supply flow channel and the balanced force liquid supply flow channel, the liquid inlet pressure of the balanced force liquid supply flow channel is higher than that of the main liquid supply flow channel, which ensures that the shape of the blades of the integral blisk remains unchanged at the final forming moment.

[0019] Third, there are four balanced force supply flow channels, and by using different balanced force supply flow channels, the deformation of different blades at the final moment can be corrected. The first balanced force supply flow channel and the second balanced force supply flow channel are passed through, which can increase the electrolyte flow rate on the back side of the blade, and correct the deformation tendency of the back side of the blade at the final forming moment of the blade; the third balanced force supply flow channel and the fourth balanced force supply flow channel are passed through, which can increase the electrolyte flow rate on the blade basin side, and correct the deformation tendency of the back side of the blade at the final forming moment of the blade; the first balanced force supply flow channel and the fourth balanced force supply flow channel are passed through, which can increase the electrolyte flow rate in the upper processing area of ​​the back of the blade tip and the lower processing area of ​​the blade tip basin, and correct the clockwise twisting deformation tendency of the blade tip at the final forming moment of the blade; the second balanced force supply flow channel and the third balanced force supply flow channel are passed through, which can increase the electrolyte flow rate in the lower processing area of ​​the back of the blade tip and the upper processing area of ​​the blade tip basin, and correct the counterclockwise twisting deformation tendency of the blade tip at the final forming moment of the blade.

[0020] Fourth, it has strong adaptability and is suitable for deformation processing of different types of integral blade disk blades at the final molding moment. The flow field structure of the present invention can be processed for integral blade disks of different models, and the parameters of each part can be adjusted according to the different blade shapes and sizes of the processed workpieces to achieve all-round stable processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The included drawings are used to provide a further understanding of the embodiments of the present invention, which constitute a part of the specification, are used to illustrate the embodiments of the present invention, and together with the text description, explain the principles of the present invention. Obviously, the drawings in the following description are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It shows a schematic diagram of the overall assembly of a device for electrolytic machining of a blisk profile for lateral liquid replenishment and blade force balance according to a specific embodiment of the present invention;

[0023] Figure 2 It shows a schematic diagram of the flow channel cross-section assembly of a device for electrochemical machining of a blisk profile for lateral liquid replenishment and blade force balance provided in accordance with a specific embodiment of the present invention;

[0024] Figures 3a to 3d A schematic diagram of a liquid supply mode provided according to a specific embodiment of the present invention is shown;

[0025] Figure 4 A schematic diagram of an integral blade disk provided according to a specific embodiment of the present invention is shown.

[0026] The above drawings include the following reference numerals:

[0027] 1. Integral blade disk; 2. Blade basin cathode; 3. Blade basin cathode tooling; 4. First balanced force liquid supply channel; 5. Second balanced force liquid supply channel; 6. Blade basin liquid inlet channel; 7. Blade back liquid inlet channel; 8. Fourth balanced force liquid supply channel; 9. Third balanced force liquid supply channel; 10. Blade back cathode tooling; 11. Blade back cathode; 12. Blade basin cathode channel; 13. Blade back cathode channel; 14. Blade basin cathode processing surface; 15. Blade basin processing area; 16. Blade back processing area; 17. Blade back cathode processing surface; 18. Blade basin; 19. Blade tip; 20. Blade back. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0030] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0031] like Figures 1 to 4As shown, according to a specific embodiment of the present invention, a lateral liquid replenishment and balanced blade force integral blade disk profile electrolytic machining device is provided, and the lateral liquid replenishment and balanced blade force integral blade disk profile electrolytic machining device includes a blade basin cathode 2, a blade basin cathode tooling body 3, a blade back cathode 11 and a blade back cathode tooling body 10; the area between the blade basin 18 of the blade to be processed and the blade back 20 of the adjacent blade is called the blade basin cathode channel 12, the blade basin cathode 2 is located in the blade basin cathode channel 12, the blade basin cathode tooling body 3 is located below the blade basin cathode channel 12 of the blade to be processed, and is connected to the blade basin cathode 2; the area between the blade back 20 of the blade to be processed and the blade basin 18 of the adjacent blade is called the blade back cathode channel 13, the blade back cathode 11 is located in the blade back cathode channel 12, the blade back cathode tooling body 10 is located below the blade back cathode channel 13 and is connected to the blade back cathode 11; the electrolytic machining device includes two electrolyte flow channels, namely: a main liquid supply flow channel for supplying liquid to the blade processing area, a balanced force supply flow channel specially used for supplying liquid to the processing areas on both sides of the blade tip, and for flushing liquid on both sides of the blade tip at the final forming moment; the main liquid supply flow channel includes a blade basin liquid inlet flow channel 6, a blade back liquid inlet flow channel 7, a blade basin processing area 15 and a blade back processing area 16, the blade basin liquid inlet channel 6 is arranged in the blade basin cathode tooling body 3, the blade back liquid inlet flow channel 7 is arranged in the blade back cathode tooling body 10, and the blade basin cathode 2 has a blade basin cathode The blade back cathode 11 has a blade back cathode processing surface 17, and the blade back processing area 16 is an area formed between the blade back cathode processing surface 17 and the blade back 20 to be processed. The blade back liquid inlet flow channel 6 is used to supply liquid to the blade back processing area 15, and the blade back liquid inlet flow channel 7 is used to supply liquid to the blade back processing area 16; the balanced force supply flow channel includes a first balanced force supply flow channel 4, a second balanced force supply flow channel 5, a third balanced force supply flow channel 9 and a fourth balanced force supply flow channel 8. The blade back processing area 15 is divided into a blade back blade along the blade back tip direction. The blade back processing area 16 is divided into the blade tip upper processing area and the blade back tip lower processing area along the blade back tip direction. The first balanced force liquid supply flow channel (4 is located in the blade basin cathode clamp body 3, which supplies liquid to the blade back tip upper processing area; the second balanced force liquid supply flow channel 5 is located in the blade basin cathode clamp body 3, which supplies liquid to the blade back tip lower processing area; the third balanced force liquid supply flow channel 9 is located in the blade back cathode clamp body 10, which supplies liquid to the blade basin tip upper processing area; the fourth balanced force liquid supply flow channel 8 is located in the blade back cathode clamp body 10, which supplies liquid to the blade basin tip lower processing area.

[0032] By applying this configuration, a device for electrolytic machining of the profile of an integral blade disk with lateral liquid replenishment and balanced blade force is provided. The device can correct the deformation of the blade at the final forming moment of the electrolytic machining of the integral blade disk, ensure the blade forming accuracy, improve the stability of the electrolyte flow field, and prevent the blade deformation from causing machining accidents to a certain extent. The integrated cathode tooling design improves the machining efficiency and realizes the stable machining of the integral blade disk. Compared with the prior art, the device for electrolytic machining of the profile of an integral blade disk with lateral liquid replenishment and balanced blade force provided by the present invention has the following advantages:

[0033] First, a lateral liquid replenishment method is proposed to balance the blade force on the integral blade disk surface electrolytic machining flow field, so as to correct the blade deformation at the final forming moment of the integral blade disk electrolytic machining blade, ensure the blade forming accuracy, improve the stability of the electrolyte flow field, prevent blade deformation and processing accidents to a certain extent, and improve the processing efficiency.

[0034] Secondly, of the two flow channels, the main liquid supply flow channel and the balanced force liquid supply flow channel, the liquid inlet pressure of the balanced force liquid supply flow channel is higher than that of the main liquid supply flow channel, which ensures that the shape of the blades of the integral blisk remains unchanged at the final forming moment.

[0035] Third, there are four balanced force supply flow channels, and by using different balanced force supply flow channels, the deformation of different blades at the final moment can be corrected. The first balanced force supply flow channel and the second balanced force supply flow channel are passed through, which can increase the electrolyte flow rate on the back side of the blade, and correct the deformation tendency of the back side of the blade at the final forming moment of the blade; the third balanced force supply flow channel and the fourth balanced force supply flow channel are passed through, which can increase the electrolyte flow rate on the blade basin side, and correct the deformation tendency of the back side of the blade at the final forming moment of the blade; the first balanced force supply flow channel and the fourth balanced force supply flow channel are passed through, which can increase the electrolyte flow rate in the upper processing area of ​​the back of the blade tip and the lower processing area of ​​the blade tip basin, and correct the clockwise twisting deformation tendency of the blade tip at the final forming moment of the blade; the second balanced force supply flow channel and the third balanced force supply flow channel are passed through, which can increase the electrolyte flow rate in the lower processing area of ​​the back of the blade tip and the upper processing area of ​​the blade tip basin, and correct the counterclockwise twisting deformation tendency of the blade tip at the final forming moment of the blade.

[0036] Fourth, it has strong adaptability and is suitable for deformation processing of different types of integral blade disk blades at the final molding moment. The flow field structure of the present invention can be processed for integral blade disks of different models, and the parameters of each part can be adjusted according to the different blade shapes and sizes of the processed workpieces to achieve all-round stable processing.

[0037] Furthermore, in the present invention, in order to reduce tooling clamping and shorten the manufacturing cycle, the blade basin cathode 2 and the blade basin cathode tooling body 3 can be set as an integrated structure, and the blade back cathode 11 and the blade back cathode tooling body 10 are an integrated structure. This method is conducive to realizing automation, the blade basin cathode tooling body drives the blade basin cathode, and the blade back cathode tooling body drives the blade back cathode to feed and retract at the same time, reducing tooling clamping and shortening the manufacturing cycle.

[0038] According to another aspect of the present invention, a method for electrolytic machining of an integral blade disk surface with lateral liquid replenishment to balance the blade force is provided. The method for electrolytic machining of an integral blade disk surface with lateral liquid replenishment to balance the blade force uses the electrolytic machining device for electrolytic machining of an integral blade disk surface with lateral liquid replenishment to balance the blade force as described above to perform electrolytic machining of the integral blade disk surface.

[0039] By applying this configuration, a method for electrolytic machining of an integral blade disk surface with lateral liquid replenishment and balanced blade force is provided. This method can correct the deformation of the blades during the final forming of the electrolytically machined blades of the integral blade disk, ensure the blade forming accuracy, improve the stability of the electrolyte flow field, and prevent blade deformation from machining accidents to a certain extent. The integrated cathode tooling design improves the machining efficiency and realizes stable machining of the integral blade disk.

[0040] Furthermore, in the present invention, the electrolytic machining method of the integral blade disk profile with lateral liquid replenishment and balanced blade force includes: before the start of machining, the blade basin cathode 2 and the blade back cathode 11 are respectively inserted into the blade basin cathode channel 12 and the blade back cathode channel 13 driven by the blade basin cathode tooling body 3 and the blade back cathode tooling body 10 to enter the machining position; the liquid inlet pressures of the two liquid inlets of the blade basin liquid inlet channel 6 and the blade back liquid inlet channel 7 in the main liquid supply channel are the same; the pressures of the four balanced force liquid supply channels are the same, but higher than the liquid inlet pressures of the blade basin liquid inlet channel 6 and the blade back liquid inlet channel 7, to ensure that the electrolyte in the blade machining area is uniform; the main supply The electrolyte flow direction in the liquid flow channel and the four balanced force supply flow channels is from the blade tip to the blade root; at the beginning of processing, the blade basin cathode 2 and the blade back cathode 11 are respectively driven by the blade basin cathode tooling body 3 and the blade back cathode tooling body 10 to feed toward each other to realize blade surface processing; after processing, the blade basin cathode 2 and the blade back cathode 11 retreat to a safe distance, and the entire blade disk 1 retreats to a safe distance. After rotating a certain angle, the blade basin cathode 2 and the blade back cathode 11 return to the processing position to process the next blade, and repeat the above process to finally complete the forming processing of all blades of the entire blade disk 1.

[0041] Furthermore, in the present invention, there are four balanced force liquid supply flow channels, and the deformation conditions of different blades at the final moment can be corrected by using different balanced force liquid supply flow channels. The electrolyte flow rate on the back side of the blade can be increased by passing liquid only through the first balanced force supply flow channel 4 and the second balanced force supply flow channel 5, so as to correct the deformation tendency of the back side of the blade when the blade is finally formed; the electrolyte flow rate on the blade basin side can be increased by passing liquid only through the third balanced force supply flow channel 9 and the fourth balanced force supply flow channel 8, so as to correct the deformation tendency of the blade basin side when the blade is finally formed; the electrolyte flow rate in the upper processing area of ​​the back of the blade tip and the lower processing area of ​​the blade basin of the blade tip can be increased by passing liquid only through the first balanced force supply flow channel 4 and the fourth balanced force supply flow channel 8, so as to correct the clockwise twisting deformation tendency of the blade tip when the blade is finally formed; the electrolyte flow rate in the lower processing area of ​​the back of the blade tip and the upper processing area of ​​the blade basin of the blade tip can be increased by passing liquid only through the second balanced force supply flow channel 5 and the third balanced force supply flow channel 9, so as to correct the counterclockwise twisting deformation tendency of the blade tip when the blade is finally formed.

[0042] According to another aspect of the present invention, there is provided a computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the electrolytic machining method for the integral blade disk profile with lateral liquid replenishment and balanced blade force as described above.

[0043] According to another aspect of the present invention, a computer-readable storage medium is provided, which stores a computer program. When the computer program is executed by a processor, the steps of the electrolytic machining method of the integral blade disk surface with lateral liquid replenishment and balanced blade force are implemented as described above.

[0044] In order to further understand the present invention, the following Figures 1 to 4 The device and method for electrolytic machining of the integral blade disk profile for lateral liquid replenishment and blade force balance provided by the present invention are described in detail.

[0045] like Figures 1 to 4As shown, according to a specific embodiment of the present invention, a lateral liquid replenishment balanced blade force integral blade disk profile electrolytic machining device is provided, the device includes a blade basin cathode 2, a blade basin cathode tooling body 3, a blade back cathode 11 and a blade back cathode tooling body 10; the area between the blade basin 18 of the blade to be processed and the blade back 20 of the adjacent blade is called the blade basin cathode channel 12, the blade basin cathode 2 is located in the blade basin cathode channel 12, the blade basin cathode tooling body 3 is located below the blade basin cathode channel 12 of the blade to be processed, and is connected to the blade basin cathode 2; the area between the blade back 20 of the blade to be processed and the blade basin 18 of the adjacent blade is called the blade back cathode channel 13, the blade back cathode 11 is located in the blade back cathode channel 12, the blade back cathode tooling body 10 is located below the blade back cathode channel 13, and It is connected to the blade back cathode 11; the electrolytic machining device includes two electrolyte flow channels, namely: a main liquid supply flow channel for supplying liquid to the blade processing area, a balanced force supply flow channel specially used for supplying liquid to the processing areas on both sides of the blade tip, and flushing liquid on both sides of the blade tip at the final forming moment; the main liquid supply flow channel includes a blade basin liquid inlet flow channel 6, a blade back liquid inlet flow channel 7, a blade basin processing area 15 and a blade back processing area 16, the blade basin liquid inlet channel 6 is arranged in the blade basin cathode tooling body 3, the blade back liquid inlet flow channel 7 is arranged in the blade back cathode tooling body 10, the blade basin cathode 2 has a blade basin cathode processing surface 14, the blade basin processing area 15 is the area formed between the blade basin cathode processing surface 14 and the blade basin 18 to be processed, the blade back cathode 11 has a blade back cathode processing surface 17, and the blade back processing area 16 is The area formed between the blade back cathode processing surface 17 and the blade back 20 to be processed, the blade basin liquid inlet channel 6 is used to supply liquid to the blade basin processing area 15, and the blade back liquid inlet channel 7 is used to supply liquid to the blade back processing area 16; the balanced force supply channel includes a first balanced force supply channel 4, a second balanced force supply channel 5, a third balanced force supply channel 9 and a fourth balanced force supply channel 8, and the blade basin processing area 15 is divided into an upper processing area of ​​the blade basin tip and a lower processing area of ​​the blade basin tip along the tip direction of the blade basin (find the midpoint position of the blade basin tip, take a horizontal section along the midpoint position, the blade basin processing area with the horizontal section upward is the upper processing area of ​​the blade basin tip, and the blade basin processing area with the horizontal section downward is the lower processing area of ​​the blade basin tip The back processing area 16 is divided into the upper processing area of ​​the blade basin tip and the lower processing area of ​​the blade basin tip along the direction of the back tip of the blade (find the midpoint of the back tip of the blade, take a horizontal section along the midpoint, the back processing area with the horizontal section upward is the upper processing area of ​​the blade back tip, and the back processing area with the horizontal section downward is the lower processing area of ​​the blade back tip), the first balanced force supply flow channel (4 is located in the blade basin cathode clamp body 3, which supplies liquid to the upper processing area of ​​the blade back tip; the second balanced force supply flow channel 5 is located in the blade basin cathode clamp body 3, which supplies liquid to the lower processing area of ​​the blade back tip; the third balanced force supply flow channel 9 is located in the blade back cathode clamp body 10, which supplies liquid to the upper processing area of ​​the blade basin tip;The fourth balanced force supply channel 8 is located in the cathode clamp body 10 on the back of the blade, and supplies liquid to the processing area on the lower side of the blade basin and blade tip.

[0046] The cathode and the fixture in the device are an integral whole, and the joint movement of the tooling and the cathode can be achieved during the processing. The device is divided into a blade basin cathode tooling body and a blade back cathode tooling body, and each tooling body is provided with a main liquid supply flow channel and two balanced flushing liquid supply flow channels. The main liquid supply flow channel supplies liquid to the blade processing area from the blade tip; the balanced force supply flow channel replenishes liquid to the processing areas on both sides of the blade tip of the integral blade disc before the blade processing area. The blade back cathode tooling body, the blade basin cathode tooling body, and the integral blade disc form a closed flow field pattern in which the electrolyte in each flow channel is independently controlled. The key to the present invention lies in the flow mode of the electrolyte from the blade tip to the blade root of the integral blade disc electrolytic processing. The blade tip is prone to deformation when the blade is finally formed. The balanced flushing liquid supply flow channel is used to correct the deformation of the blade, improve the uniformity and stability of the flow field in the processing area, and ensure the processing accuracy of the blade.

[0047] The process of electrochemically machining a workpiece using the "device and method for electrochemically machining an integral blade disk profile with lateral liquid replenishment and balanced blade force" of the present invention comprises the following steps:

[0048] Step 1: Install the integral blade disk 1, blade basin cathode fixture 3, and blade back cathode fixture 10. The blade basin cathode fixture 3 and blade back cathode fixture 10 are respectively installed on the CNC motion axes that move linearly in opposite directions and are connected to the negative pole of the power supply. The integral blade disk 1 is installed on the rotating platform, and the fixture disk is connected to the positive pole of the power supply. The blade basin cathode 2 and the blade back cathode 11 are respectively inserted into the blade basin cathode channel 12 and the blade back cathode channel 13.

[0049] Step 2: supply electrolyte. The electrolyte flow method of lateral replenishment is adopted to balance the blade force. The prepared electrolyte is supplied to the blade processing area flow channel through the main liquid supply flow channel and the balanced force supply flow channel at a certain pressure, temperature and concentration. The inlet pressure of the balanced force supply flow channel is greater than the inlet pressure of the blade basin inlet channel 6 and the blade back inlet channel 7.

[0050] Step 3: Turn on the electrolytic processing power supply. The blade basin cathode fixture 3 and the blade back cathode fixture 10 are relatively fed under the drive of the CNC motion axis moving in opposite directions to realize the blade profile processing of the integral blade disk 1. After the processing is completed, the cathode retreats to a safe distance, the integral blade disk 1 retreats to a safe distance, the integral blade disk 1 rotates a certain angle, the blade basin cathode 2 and the blade back cathode 11 return to the processing position, and the next piece of processing is carried out, and finally the processing of all blades of the integral blade disk 1 is completed.

[0051] Step 4: After the processing is completed, disconnect the electrolytic processing power supply, turn off the pump in the electrolyte circulation system loop, and return the processing axes of the machine tool to their initial positions.

[0052] In summary, the present invention provides a device and method for electrolytic machining of an integral blade disk surface with lateral liquid replenishment to balance the force of the blade. The device and method can correct the deformation of the blade at the final forming moment of the electrolytic machining of the integral blade disk, ensure the blade forming accuracy, improve the stability of the electrolyte flow field, and prevent the blade deformation from causing machining accidents to a certain extent. The integrated cathode tooling design improves the machining efficiency and realizes the stable machining of the integral blade disk. Compared with the prior art, the device for electrolytic machining of an integral blade disk surface with lateral liquid replenishment to balance the force of the blade provided by the present invention has the following advantages:

[0053] First, a lateral liquid replenishment method is proposed to balance the blade force on the integral blade disk surface electrolytic machining flow field, so as to correct the blade deformation at the final forming moment of the integral blade disk electrolytic machining blade, ensure the blade forming accuracy, improve the stability of the electrolyte flow field, prevent blade deformation and processing accidents to a certain extent, and improve the processing efficiency.

[0054] Secondly, of the two flow channels, the main liquid supply flow channel and the balanced force liquid supply flow channel, the liquid inlet pressure of the balanced force liquid supply flow channel is higher than that of the main liquid supply flow channel, which ensures that the shape of the blades of the integral blisk remains unchanged at the final forming moment.

[0055] Third, there are four balanced force supply flow channels, and by using different balanced force supply flow channels, the deformation of different blades at the final moment can be corrected. The first balanced force supply flow channel and the second balanced force supply flow channel are passed through, which can increase the electrolyte flow rate on the back side of the blade, and correct the deformation tendency of the back side of the blade at the final forming moment of the blade; the third balanced force supply flow channel and the fourth balanced force supply flow channel are passed through, which can increase the electrolyte flow rate on the blade basin side, and correct the deformation tendency of the back side of the blade at the final forming moment of the blade; the first balanced force supply flow channel and the fourth balanced force supply flow channel are passed through, which can increase the electrolyte flow rate in the upper processing area of ​​the back of the blade tip and the lower processing area of ​​the blade tip basin, and correct the clockwise twisting deformation tendency of the blade tip at the final forming moment of the blade; the second balanced force supply flow channel and the third balanced force supply flow channel are passed through, which can increase the electrolyte flow rate in the lower processing area of ​​the back of the blade tip and the upper processing area of ​​the blade tip basin, and correct the counterclockwise twisting deformation tendency of the blade tip at the final forming moment of the blade.

[0056] Fourth, the tool cathode and fixture are designed as an integrated structure, which is conducive to automation. The blade basin cathode fixture body and the blade back cathode fixture body are fed and retracted at the same time, reducing tool clamping and shortening the manufacturing cycle.

[0057] Fifth, it has strong adaptability and is suitable for deformation processing of different types of blisk blades at the final molding moment. The flow field structure of the present invention can be processed for different types of blisks, and the parameters of each part can be adjusted according to the different blade shapes and sizes of the processed workpieces to achieve all-round stable processing.

[0058] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0059] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for electrolytic machining of the profile of an integral blade disk with lateral liquid replenishment and balanced blade force. It is characterized in that The device for electrolytic machining of the profile of an integral blade disk with lateral liquid replenishment and balanced blade force comprises a blade basin cathode (2), a blade basin cathode tooling body (3), a blade back cathode (11) and a blade back cathode tooling body (10); The area between the blade basin (18) of the blade to be processed and the blade back (20) of the adjacent blade is called the blade basin cathode channel (12), the blade basin cathode (2) is located in the blade basin cathode channel (12), the blade basin cathode tooling body (3) is located below the blade basin cathode channel (12) of the blade to be processed and is connected to the blade basin cathode (2); the area between the blade back (20) of the blade to be processed and the blade basin (18) of the adjacent blade is called the blade back cathode channel (13), the blade back cathode (11) is located in the blade back cathode channel (12), the blade back cathode tooling body (10) is located below the blade back cathode channel (13) and is connected to the blade back cathode (11); The electrolytic machining device comprises two electrolyte flow channels, namely: a main liquid supply flow channel for supplying liquid to the blade machining area, and a balanced force supply flow channel for supplying liquid to the machining areas on both sides of the blade tip, for flushing liquid on both sides of the blade tip at the final forming moment; The main liquid supply flow channel comprises a blade basin liquid inlet flow channel (6), a blade back liquid inlet flow channel (7), a blade basin processing area (15) and a blade back processing area (16); the blade basin liquid inlet flow channel (6) is arranged in the blade basin cathode tooling body (3); the blade back liquid inlet flow channel (7) is arranged in the blade back cathode tooling body (10); the blade basin cathode (2) has a blade basin cathode processing surface (14); the blade basin processing area (15) is an area formed between the blade basin cathode processing surface (14) and the blade basin (18) to be processed; the blade back cathode (11) has a blade back cathode processing surface (17); the blade back processing area (16) is an area formed between the blade back cathode processing surface (17) and the blade back (20) to be processed; the blade basin liquid inlet flow channel (6) is used to supply liquid to the blade basin processing area (15); the blade back liquid inlet flow channel (7) is used to supply liquid to the blade back processing area (16); The balanced force liquid supply flow channel comprises a first balanced force liquid supply flow channel (4), a second balanced force liquid supply flow channel (5), a third balanced force liquid supply flow channel (9) and a fourth balanced force liquid supply flow channel (8); the blade basin processing area (15) is divided into an upper processing area on the blade basin tip and a lower processing area on the blade basin tip along the direction of the blade basin tip; the blade back processing area (16) is divided into an upper processing area on the blade basin tip and a lower processing area on the blade basin tip along the direction of the blade back tip; the first balanced force liquid supply flow channel ( 4) is located in the blade basin cathode clamp body (3) to supply liquid to the upper processing area of ​​the blade back and blade tip; the second balanced force supply channel (5) is located in the blade basin cathode clamp body (3) to supply liquid to the lower processing area of ​​the blade back and blade tip; the third balanced force supply channel (9) is located in the blade back cathode clamp body (10) to supply liquid to the upper processing area of ​​the blade basin tip; the fourth balanced force supply channel (8) is located in the blade back cathode clamp body (10) to supply liquid to the lower processing area of ​​the blade basin tip.

2. The device for electrolytic machining of the profile of the integral blade disk with lateral liquid replenishment and balanced blade force according to claim 1, It is characterized in that The blade basin cathode (2) and the blade basin cathode tooling body (3) are an integrated structure, and the blade back cathode (11) and the blade back cathode tooling body (10) are an integrated structure.

3. A method for electrolytic machining of the integral blade disk surface with lateral liquid replenishment and balanced blade force, It is characterized in that The method for electrolytic machining of the integral blade disk profile with lateral liquid replenishment for balancing blade force uses the device for electrolytic machining of the integral blade disk profile with lateral liquid replenishment for balancing blade force as described in claim 1 or 2 to perform electrolytic machining of the integral blade disk profile.

4. The electrolytic machining method for the profile of the integral blade disk with lateral liquid replenishment and balanced blade force according to claim 3, It is characterized in that The electrolytic machining method for the profile of an integral blade disk with lateral liquid replenishment and blade force balance comprises: Before the processing starts, the blade basin cathode (2) and the blade back cathode (11) are respectively inserted into the blade basin cathode channel (12) and the blade back cathode channel (13) driven by the blade basin cathode tooling body (3) and the blade back cathode tooling body (10) to enter the processing position; The inlet pressures of the two inlets of the blade basin inlet channel (6) and the blade back inlet channel (7) in the main liquid supply channel are the same; the pressures of the four balanced force liquid supply channels are the same, but higher than the inlet pressures of the blade basin inlet channel (6) and the blade back inlet channel (7), so as to ensure that the electrolyte in the blade processing area is uniform; the electrolyte flow direction of the main liquid supply channel and the four balanced force liquid supply channels is from the blade tip to the blade root; At the beginning of processing, the blade basin cathode (2) and the blade back cathode (11) are respectively driven by the blade basin cathode tooling body (3) and the blade back cathode tooling body (10) to feed toward each other, thereby realizing blade profile processing; After the processing is completed, the blade basin cathode (2) and the blade back cathode (11) retreat to a safe distance, and the entire blade disk (1) retreats to a safe distance. After rotating a certain angle, the blade basin cathode (2) and the blade back cathode (11) return to the processing position to process the next blade. The above process is repeated to finally complete the molding processing of all blades of the entire blade disk (1).

5. The electrolytic machining method for the profile of the integral blade disk with lateral liquid replenishment and balanced blade force according to claim 4, It is characterized in that By only passing liquid through the first balanced force liquid supply channel (4) and the second balanced force liquid supply channel (5), the electrolyte flow rate on the back side of the blade can be increased, thereby correcting the tendency of the back side of the blade to deform when the blade is finally formed.

6. The electrolytic machining method for the profile of the integral blade disk with lateral liquid replenishment and balanced blade force according to claim 5, It is characterized in that By passing liquid only through the third balanced force liquid supply flow channel (9) and the fourth balanced force liquid supply flow channel (8), the electrolyte flow rate on the blade basin side can be increased, thereby correcting the tendency of the blade basin side to deform when the blade is finally formed.

7. The electrolytic machining method for the profile of the integral blade disk with lateral liquid replenishment and balanced blade force according to claim 6, It is characterized in that By passing liquid only through the first balanced force liquid supply flow channel (4) and the fourth balanced force liquid supply flow channel (8), the electrolyte flow rate in the upper processing area of ​​the blade tip and the lower processing area of ​​the blade tip and the blade base can be increased, thereby correcting the clockwise twisting deformation of the blade tip when the blade is finally formed.

8. The electrolytic machining method for the profile of the integral blade disk with lateral liquid replenishment and balanced blade force according to claim 7, It is characterized in that By only passing liquid through the second balanced force liquid supply flow channel (5) and the third balanced force liquid supply flow channel (9), the electrolyte flow rate in the processing area on the lower side of the blade tip and the upper side of the blade tip and the base of the blade can be increased, thereby correcting the counterclockwise twisting deformation of the blade tip when the blade is finally formed.

9. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, It is characterized in that The processor executes the computer program to implement the steps of the method for electrochemical machining of the profile of an integral blade disk for lateral liquid replenishment and force balancing according to any one of claims 2 to 8.

10. A computer-readable storage medium storing a computer program. It is characterized in that When the computer program is executed by the processor, the steps of the method for electrolytic machining of the integral blade disk profile with lateral liquid replenishment and blade force balancing as described in any one of claims 2 to 8 are implemented.

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