Temperature-controllable and localized whole-blisket rough-fine combined electrochemical machining device and method

Abstract

The application provides a temperature-controlled and localized whole-blade-disc rough and fine combined electrolytic machining device and method. The electrolytic machining device comprises a machining cathode and a partitioned temperature-controlled liquid supply assembly. The machining cathode is provided with a first flow channel with an outlet formed at an end portion, and a second flow channel is formed between two adjacent machining cathodes. The partitioned temperature-controlled liquid supply assembly supplies high-temperature electrolyte to the first flow channel and low-temperature electrolyte to the second flow channel in a first state, and supplies low-temperature electrolyte to the first flow channel and high-temperature electrolyte to the second flow channel in a second state. The temperature-controlled and localized whole-blade-disc rough and fine combined electrolytic machining device can make the machining cathode complete the separate machining of the blade channel and the blade by switching the state of the partitioned temperature-controlled liquid supply assembly, and other machining cathodes do not need to be replaced during the machining process, so that the rapid switching and continuous machining of the blade electrolytic rough machining and fine machining of the whole-blade-disc can be realized under lower structural complexity, and the electrolytic machining efficiency of the whole-blade-disc is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electrolytic machining, in particular to a temperature-controlled localized integral blisk rough and fine combined electrolytic machining device and method. BACKGROUND

[0002] The current integral blisk electrolytic machining process is generally divided into two processes: blade channel pre-machining and blade surface fine machining, in other words, rough machining and fine machining. The blade channel pre-machining is the first process, which mainly removes the blisk blank by rough machining cathode dissolution, and gradually extends into the blisk blank along the preset path to process a blade blank with a certain allowance and precision. The blade surface fine machining is the second process, which mainly removes the allowance of the blade blank between the two profiled cathodes by extending the two profiled cathodes into the corresponding blade channel and then feeding them towards each other, and processes a blade that meets the final precision requirement. However, the above-mentioned electrolytic machining process needs to be divided into two independent processes, and different machining cathodes are used for corresponding processes, so the electrolytic equipment and machining steps are relatively complex, resulting in low machining efficiency of the integral blisk. SUMMARY

[0003] The present application aims to at least partially solve one of the technical problems in the related art. To this end, the embodiments of the present application propose a temperature-controlled localized integral blisk rough and fine combined electrolytic machining device and method, which can pass different temperature electrolyte into the first flow channel in the machining cathode and the second flow channel between the adjacent two machining cathodes through the partitioned temperature control liquid supply assembly. By controlling the temperature of the electrolyte, the machining cathode can complete the machining of the blade channel and the blade, and there is no need to replace other machining cathodes during the machining process. Therefore, the temperature-controlled localized integral blisk rough and fine combined electrolytic machining device can realize the rapid switching and continuous machining of the blade electrolytic rough machining and fine machining of the integral blisk at a lower structural complexity, which is beneficial to improving the electrolytic machining efficiency of the integral blisk.

[0004] The embodiments of the present application also propose a temperature-controlled localized integral blisk rough and fine combined electrolytic machining method.

[0005] The temperature-controlled localized integral blisk rough and fine combined electrolytic machining device of the embodiments of the present application comprises:

[0006] The machining cathode is provided with a first flow channel, the first flow channel forms an outlet at the end of the machining cathode, and the machining cathode is at least two, and a second flow channel is formed between the adjacent two machining cathodes;

[0007] The partition temperature control liquid supply assembly is in communication with the first flow channel and the second flow channel, has a first state and a second state, in the first state, the partition temperature control liquid supply assembly supplies high-temperature electrolyte to the first flow channel and supplies low-temperature electrolyte to the second flow channel, in the second state, the partition temperature control liquid supply assembly supplies low-temperature electrolyte to the first flow channel and supplies high-temperature electrolyte to the second flow channel.

[0008] The temperature control and localization overall blisk rough and fine combined electrolytic machining device can supply electrolyte with different temperatures to the first flow channel in the machining cathode and the second flow channel between the adjacent two machining cathodes through the partition temperature control liquid supply assembly, and has the first state and the second state, through the control of the electrolyte temperature, the machining cathode can complete the separate machining of the blade passage and the blade, and other machining cathodes do not need to be replaced in the machining process, therefore, the temperature control and localization overall blisk rough and fine combined electrolytic machining device can realize the quick switching and continuous performance of the blade electrolytic rough machining and fine machining of the overall blisk under the lower structural complexity, and is beneficial to improving the electrolytic machining efficiency of the overall blisk.

[0009] In some embodiments, the wall surface of the first flow channel has a heat insulation layer.

[0010] In some embodiments, the temperature of the high-temperature electrolyte is 30-50 DEG C, and the temperature of the low-temperature electrolyte is -10-20 DEG C.

[0011] In some embodiments, the temperature of the low-temperature electrolyte is greater than the freezing point of the electrolyte by 5 DEG C or more.

[0012] In some embodiments, the outlet comprises a plurality of nozzles, the plurality of nozzles are arranged on the end surface of the machining cathode, and the diameter of the nozzles is 0.1-3 mm.

[0013] In some embodiments, the partition temperature control liquid supply assembly comprises:

[0014] The first switching valve is in communication with the first flow channel, has a first high-temperature electrolyte inlet and a first low-temperature electrolyte inlet, and can control the on-off of the first high-temperature electrolyte inlet and the first flow channel and the on-off of the first low-temperature electrolyte inlet and the first flow channel.

[0015] The second switching valve is in communication with the second flow channel, has a second high-temperature electrolyte inlet and a second low-temperature electrolyte inlet, and can control the on-off of the second high-temperature electrolyte inlet and the second flow channel and the on-off of the second low-temperature electrolyte inlet and the second flow channel.

[0016] In some embodiments, the partitioned temperature-controlled liquid supply assembly further comprises:

[0017] a first vortex refrigeration device having a first high-temperature electrolyte outlet and a first low-temperature electrolyte outlet, the first high-temperature electrolyte outlet being in communication with the first high-temperature electrolyte inlet, and the first low-temperature electrolyte outlet being in communication with the first low-temperature electrolyte inlet;

[0018] a second vortex refrigeration device having a second high-temperature electrolyte outlet and a second low-temperature electrolyte outlet, the second high-temperature electrolyte outlet being in communication with the second high-temperature electrolyte inlet, and the second low-temperature electrolyte outlet being in communication with the second low-temperature electrolyte inlet.

[0019] In some embodiments, the partitioned temperature-controlled liquid supply assembly further comprises a liquid supply pump in communication with the first vortex refrigeration device and the second vortex refrigeration device to supply electrolyte to the first vortex refrigeration device and the second vortex refrigeration device.

[0020] In some embodiments, the temperature-controlled localized integral blisk rough-finish combined electrochemical machining device is used for machining a blisk, and at least part of the wall surface of the second flow channel formed by the machining cathode is a profiling surface matched with the profile of the blade.

[0021] The temperature-controlled localized integral blisk rough-finish combined electrochemical machining method according to the embodiments of the present application is implemented by using the temperature-controlled localized integral blisk rough-finish combined electrochemical machining device according to any one of the embodiments described above, and the temperature-controlled localized integral blisk rough-finish combined electrochemical machining method comprises the following steps:

[0022] S1, the partitioned temperature-controlled liquid supply assembly is in the first state to supply high-temperature electrolyte to the first flow channel and low-temperature electrolyte to the second flow channel, and the high-temperature electrolyte in the first flow channel is discharged through the outlet; when the partitioned temperature-controlled liquid supply assembly is in the first state, the two adjacent machining cathodes are fed along the radial direction of the blisk blank towards the center of the blisk blank, so that each machining cathode electrochemically generates a blade row channel on the blisk blank, and a blade blank is formed between the two adjacent blade row channels;

[0023] S2, the partitioned temperature-controlled liquid supply assembly is in the second state to supply low-temperature electrolyte to the first flow channel and high-temperature electrolyte to the second flow channel, and the low-temperature electrolyte in the first flow channel is discharged through the outlet; when the partitioned temperature-controlled liquid supply assembly is in the second state, the two adjacent machining cathodes are fed towards each other, so that the blade blank is electrochemically generated into a blade, and the machining cathode is withdrawn from the corresponding blade row channel;

[0024] S3, the blade disc blank rotates by a certain angle around the axial direction of the blade disc blank in sequence, and steps S1 and S2 are repeated after each rotation until the blade disc blank is electrolyzed to generate a required number of blades.

[0025] The temperature-controlled local overall blade disc rough-fine combined electrolytic machining method of the embodiment of the application first makes the partition temperature-controlled liquid supply assembly in a first state, at which time the blade row channel and the blade blank are electrolyzed by the two adjacent machining cathodes, and then makes the partition temperature-controlled liquid supply assembly in a second state, at which time the blade is electrolyzed by the two machining cathodes. Through the control of the temperature of the electrolyte, the machining cathode completes the machining of the blade row channel and the blade respectively, and other machining cathodes do not need to be replaced during the machining process, the continuity of the machining process is enhanced, the machining steps are simplified, and the electrolytic machining efficiency of the overall blade disc is improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structural schematic view of the temperature-controlled local overall blade disc rough-fine combined electrolytic machining device of the embodiment of the application;

[0027] Figure 2 is Figure 1 is an enlarged schematic view of part A in FIG. 6;

[0028] Figure 3 is a machining state schematic view of the two adjacent machining cathodes when the partition temperature-controlled liquid supply assembly is in the first state in the embodiment of the application;

[0029] Figure 4 is a machining state schematic view of the two adjacent machining cathodes when the partition temperature-controlled liquid supply assembly is in the second state in the embodiment of the application.

[0030] REFERENCE SIGNS:

[0031] 1. Machining cathode; 11. First flow channel; 12. Second flow channel; 13. Nozzle; 2. Partition temperature-controlled liquid supply assembly; 21. First vortex refrigeration device; 22. Second vortex refrigeration device; 23. Liquid supply pump; 3. Blade disc. DETAILED DESCRIPTION

[0032] The embodiments of the application are described in detail below, and examples of the embodiments are shown in the drawings. The embodiments described below with reference to the drawings are exemplary and are intended to explain the application, and cannot be understood as a limitation of the application.

[0033] The following description refers to the accompanying drawings. Figures 1-4 The temperature-controlled local overall blade disc rough-fine combined electrolytic machining device and method according to the embodiment of the application are described below.

[0034] As Figures 1-4As shown, the temperature-controlled and localized integral bladed disk roughing and finishing combined electrolytic machining device of this embodiment of the invention includes a machining cathode 1 and a zoned temperature-controlled liquid supply assembly 2.

[0035] The processing cathode 1 is provided with a first flow channel 11, and the first flow channel 11 forms an outlet at the end of the processing cathode 1. There are at least two processing cathodes 1, and a second flow channel 12 is formed between two adjacent processing cathodes 1. The zone temperature control liquid supply assembly 2 connects the first flow channel 11 and the second flow channel 12. The zone temperature control liquid supply assembly 2 has a first state and a second state. In the first state, the zone temperature control liquid supply assembly 2 supplies high-temperature electrolyte to the first flow channel 11 and low-temperature electrolyte to the second flow channel 12. In the second state, the zone temperature control liquid supply assembly 2 supplies low-temperature electrolyte to the first flow channel 11 and high-temperature electrolyte to the second flow channel 12.

[0036] like Figures 1-4 As shown, the processing cathode 1 extends in the vertical direction. The interior of the processing cathode 1 has a first flow channel 11. The bottom of the processing cathode 1 has an inlet of the first flow channel 11, and the top of the processing cathode 1 has an outlet of the first flow channel 11. The electrolyte enters from the inlet of the first flow channel 11 and then exits from the outlet of the first flow channel 11.

[0037] Preferably, there are two processing cathodes 1, which are arranged at intervals in the left-right direction. A second flow channel 12 is formed between the two processing cathodes 1. The electrolyte enters the second flow channel 12 from the bottom, then flows upward and is discharged from the top of the second flow channel 12. In other words, the electrolyte enters the second flow channel 12 from the bottom between the two processing cathodes 1 and is discharged from the top of the second flow channel 12 between the two processing cathodes 1.

[0038] Both the first flow channel 11 and the second flow channel 12 are connected to the zoned temperature-controlled liquid supply assembly 2 to obtain the electrolyte supplied by the zoned temperature-controlled liquid supply assembly 2. The electrolyte is divided into high-temperature electrolyte and low-temperature electrolyte according to the different relative temperatures. The temperature of the high-temperature electrolyte is higher than that of the low-temperature electrolyte. The zoned temperature-controlled liquid supply assembly 2 has a first state and a second state. In the first state, the zoned temperature-controlled liquid supply assembly 2 supplies high-temperature electrolyte to the first flow channel 11 and low-temperature electrolyte to the second flow channel 12. In the second state, the zoned temperature-controlled liquid supply assembly 2 supplies low-temperature electrolyte to the first flow channel 11 and high-temperature electrolyte to the second flow channel 12.

[0039] Preferably, the temperature-controlled and localized integral bladed disk roughing and finishing combined electrolytic machining apparatus of this embodiment of the invention is used to process the bladed disk 3. The inventors have discovered that the conductivity of the electrolyte is related to temperature. The higher the temperature of the electrolyte, the higher the conductivity of the electrolyte, and the faster the dissolution rate of the bladed disk 3 during electrolytic machining. Therefore, high-temperature electrolytes can produce a faster dissolution rate, while low-temperature electrolytes, due to their lower temperature, have a certain inhibitory effect on electrolytic dissolution.

[0040] The temperature-controlled and localized overall blisk rough-finish combined electrochemical machining device of the embodiment of the present application can pass electrolyte of different temperatures into the first flow channel in the machining cathode and the second flow channel between the adjacent two machining cathodes through the partitioned temperature-controlled liquid supply assembly, and has the first state and the second state. Through the control of the temperature of the electrolyte, in other words, the switching of the first state and the second state, the machining cathode can complete the machining of the blade row channel and the blade respectively. In the machining process, other machining cathodes do not need to be replaced. Therefore, the temperature-controlled and localized overall blisk rough-finish combined electrochemical machining device can realize the quick switching and continuous machining of the blade electrolytic rough machining and finish machining of the overall blisk under lower structural complexity, which is beneficial to improving the electrolytic machining efficiency of the overall blisk. Figure 3 Figure 3 In the first state, the black arrow represents the low-temperature electrolyte, and the white arrow represents the high-temperature electrolyte. The partitioned temperature-controlled liquid supply assembly 2 supplies the high-temperature electrolyte to the first flow channel 11 and supplies the low-temperature electrolyte to the second flow channel 12. The high-temperature electrolyte in the first flow channel 11 is discharged from the outlet of the first flow channel 11. Therefore, as the machining cathode 1 feeds along the radial direction, the part of the blisk blank in front of the end of the machining cathode 1 is continuously electrolytic dissolved, and the blade row channel is formed by the electrolytic machining when the machining cathode 1 stops moving. Since the second flow channel 12 between the two machining cathodes 1 has a certain interval, and the low-temperature electrolyte in the second flow channel 12 has a lower temperature, the electrolytic dissolution is inhibited to a certain extent, so that the blisk blank forms the blade blank in the second flow channel 12 as the blade row channel is formed.

[0041] Then, the partitioned temperature-controlled liquid supply assembly 2 is switched to the second state, as shown in Figure 4 Figure 4 In the second state, the black arrow represents the low-temperature electrolyte, and the white arrow represents the high-temperature electrolyte. The partitioned temperature-controlled liquid supply assembly 2 supplies the low-temperature electrolyte to the first flow channel 11 and supplies the high-temperature electrolyte to the second flow channel 12. The low-temperature electrolyte in the first flow channel 11 is discharged from the outlet. At this time, the part of the blisk blank in front of the end of the machining cathode 1 is no longer electrolytic dissolved under the inhibition of the low-temperature electrolyte. The two machining cathodes 1 feed towards each other, and the blade blank is electrolytic finished to form the blade in the second flow channel 12. After the blade is formed, the machining cathode 1 is withdrawn from the corresponding blade row channel, and then the next blade on the blisk blank is electrolytic machined.

[0042] The temperature-controlled and localized overall blisk rough-finish combined electrochemical machining device of the embodiment of the present application can pass electrolyte of different temperatures into the first flow channel in the machining cathode and the second flow channel between the adjacent two machining cathodes through the partitioned temperature-controlled liquid supply assembly, and has the first state and the second state. Through the control of the temperature of the electrolyte, in other words, the switching of the first state and the second state, the machining cathode can complete the machining of the blade row channel and the blade respectively. In the machining process, other machining cathodes do not need to be replaced. Therefore, the temperature-controlled and localized overall blisk rough-finish combined electrochemical machining device can realize the quick switching and continuous machining of the blade electrolytic rough machining and finish machining of the overall blisk under lower structural complexity, which is beneficial to improving the electrolytic machining efficiency of the overall blisk.

[0043] In some embodiments, the wall surface of the first flow channel 11 has a heat insulation layer.​​

[0044] Specifically, the wall of the first flow channel 11 is coated with heat-insulating material to form a heat-insulating layer, so as to avoid the temperature of the electrolyte in the first flow channel 11 and the second flow channel 12 from affecting each other, which would reduce the electrolytic dissolution rate of the high-temperature electrolyte and reduce the inhibition effect of the low-temperature electrolyte.

[0045] In some embodiments, the temperature of the high-temperature electrolyte is 30°C-50°C to achieve a higher electrolytic dissolution rate. The temperature of the low-temperature electrolyte is -10°C-20°C to achieve a better inhibition effect.

[0046] Preferably, the temperature of the low-temperature electrolyte needs to be 5°C or more above the freezing point of the electrolyte to prevent the low-temperature electrolyte from freezing and becoming unable to flow.

[0047] In some embodiments, the outlet includes a plurality of nozzles 13, which are disposed on the end face of the processing cathode 1, and the diameter of the nozzles 13 is 0.1 mm to 3 mm.

[0048] like Figure 1 and Figure 2 As shown, the upper end face of the processed cathode 1 is provided with multiple nozzles 13. Preferably, the multiple nozzles 13 are evenly distributed on the upper end face of the processed cathode 1. The nozzles 13 extend downward from the upper end face of the processed cathode 1 and communicate with the first flow channel 11 to form the outlet of the first flow channel 11. The diameter of the nozzles 13 is 0.1mm-3mm. This allows the electrolyte to be uniformly sprayed from the outlet of the first flow channel 11 and controls the flow rate of the electrolyte, so as to have a better electrolytic processing effect and electrolytic dissolution rate in high-temperature electrolytes and a better inhibition effect in low-temperature electrolytes.

[0049] In some embodiments, the zoned temperature-controlled liquid supply assembly 2 includes a first switching valve and a second switching valve. The first switching valve is connected to a first flow channel 11 and has a first high-temperature electrolyte inlet and a first low-temperature electrolyte inlet. The first switching valve can control the connection and disconnection between the first high-temperature electrolyte inlet and the first flow channel 11, as well as the connection and disconnection between the first low-temperature electrolyte inlet and the first flow channel 11. The second switching valve is connected to a second flow channel 12 and has a second high-temperature electrolyte inlet and a second low-temperature electrolyte inlet. The second switching valve can control the connection and disconnection between the second high-temperature electrolyte inlet and the second flow channel 12, as well as the connection and disconnection between the second low-temperature electrolyte inlet and the second flow channel 12.

[0050] Specifically, a first switch valve (not shown in the figure) is in communication with the first flow channel 11, preferably, the first flow channels 11 of the two processing cathodes 1 are both in communication with the first switch valve through a three-way pipe or a three-way valve. The first switch valve has a first high-temperature electrolyte inlet and a first low-temperature electrolyte inlet, the first high-temperature electrolyte inlet obtains high-temperature electrolyte, and the first low-temperature electrolyte inlet obtains low-temperature electrolyte. In the first state, the first switch valve communicates the first high-temperature electrolyte inlet with the first flow channel 11 and disconnects the first low-temperature electrolyte inlet from the first flow channel 11, so that the high-temperature electrolyte enters the first flow channel 11. In the second state, the first switch valve disconnects the first high-temperature electrolyte inlet from the first flow channel 11 and communicates the first low-temperature electrolyte inlet with the first flow channel 11, so that the low-temperature electrolyte enters the first flow channel 11.

[0051] A second switch valve (not shown in the figure) is in communication with the second flow channel 12. The second switch valve has a second high-temperature electrolyte inlet and a second low-temperature electrolyte inlet. The second high-temperature electrolyte inlet obtains high-temperature electrolyte, and the second low-temperature electrolyte inlet obtains low-temperature electrolyte. In the first state, the second switch valve disconnects the second high-temperature electrolyte inlet from the second flow channel 12 and communicates the second low-temperature electrolyte inlet with the second flow channel 12, so that the low-temperature electrolyte enters the second flow channel 12. In the second state, the second switch valve communicates the second high-temperature electrolyte inlet with the second flow channel 12 and disconnects the second low-temperature electrolyte inlet from the second flow channel 12, so that the high-temperature electrolyte enters the second flow channel 12.

[0052] It can be understood that the partition temperature control liquid supply assembly is not limited to having the first switch valve and the second switch valve. In other embodiments, the first flow channel communicates a corresponding high-temperature electrolyte pipe and a low-temperature electrolyte pipe, the second flow channel communicates a corresponding high-temperature electrolyte pipe and a low-temperature electrolyte pipe, and the presence or absence of medium supply through the high-temperature electrolyte pipe and the low-temperature electrolyte pipe controls the high-temperature electrolyte or the low-temperature electrolyte entering the first flow channel and the second flow channel.

[0053] In some embodiments, the partition temperature control liquid supply assembly 2 further comprises a first vortex refrigeration device 21 and a second vortex refrigeration device 22. The first vortex refrigeration device 21 has a first high-temperature electrolyte outlet and a first low-temperature electrolyte outlet. The first high-temperature electrolyte outlet is in communication with the first high-temperature electrolyte inlet, and the first low-temperature electrolyte outlet is in communication with the first low-temperature electrolyte inlet. The second vortex refrigeration device 22 has a second high-temperature electrolyte outlet and a second low-temperature electrolyte outlet. The second high-temperature electrolyte outlet is in communication with the second high-temperature electrolyte inlet, and the second low-temperature electrolyte outlet is in communication with the second low-temperature electrolyte inlet.

[0054] As Figure 1As shown, a vortex cooler is a device that uses the action of a vortex tube to generate vortices in a high-speed medium, separating it into cold and hot media. Therefore, when the electrolyte enters the vortex cooler, it can separate and produce a high-temperature electrolyte and a low-temperature electrolyte. The first vortex cooler 21 has a first high-temperature electrolyte outlet and a first low-temperature electrolyte outlet. The first high-temperature electrolyte outlet is connected to the first high-temperature electrolyte inlet, and the first low-temperature electrolyte outlet is connected to the first low-temperature electrolyte inlet, so that the first vortex cooler 21 can simultaneously supply high-temperature electrolyte and low-temperature electrolyte to the first switching valve. The first switching valve controls one of the high-temperature electrolyte and the low-temperature electrolyte to enter the first flow channel 11. The second vortex cooler 22 has a second high-temperature electrolyte outlet and a second low-temperature electrolyte outlet. The second high-temperature electrolyte outlet is connected to the second high-temperature electrolyte inlet, and the second low-temperature electrolyte outlet is connected to the second low-temperature electrolyte inlet, so that high-temperature electrolyte and low-temperature electrolyte are supplied to the second switching valve simultaneously through the second vortex cooler 22. The second switching valve controls one of the high-temperature electrolyte and the low-temperature electrolyte to enter the second flow channel 12.

[0055] It is understood that the zoned temperature control liquid supply assembly is not limited to having a first eddy current cooler and a second eddy current cooler. In other embodiments, the zoned temperature control liquid supply assembly has a high-temperature electrolyte container and a low-temperature electrolyte container. The high-temperature electrolyte container has a heater to supply high-temperature electrolyte, and the low-temperature electrolyte container has a cooler to supply low-temperature electrolyte.

[0056] In some embodiments, the zoned temperature control liquid supply assembly 2 further includes a liquid supply pump 23, which is connected to the first eddy current cooler 21 and the second eddy current cooler 22 to supply electrolyte to the first eddy current cooler 21 and the second eddy current cooler 22.

[0057] like Figure 1 As shown, the liquid supply pump 23 is simultaneously connected to the first eddy current cooler 21 and the second eddy current cooler 22 to supply electrolyte to the first eddy current cooler 21 and the second eddy current cooler 22. Through the liquid supply pump 23, the first eddy current cooler 21 and the second eddy current cooler 22, high-temperature electrolyte and low-temperature electrolyte can be supplied to the processing cathode 1 simultaneously and synchronously.

[0058] In some embodiments, the temperature-controlled and localized integral bladed disk roughing and finishing combined electrolytic machining apparatus is used to process the bladed disk 3, and at least a portion of the wall surface of the cathode 1 forming the second flow channel 12 is a contoured surface that matches the profile of the blade.

[0059] Specifically, the temperature-controlled and localized integral bladed disk roughing and finishing combined electrolytic machining device is preferably used to process the bladed disk 3. In this case, one of the two processing cathodes 1 serves as the blade basin-side cathode, and the other serves as the blade back-side cathode, so that the blade is electrolytically processed through the blade basin-side cathode and the blade back-side cathode, such as... Figure 1As shown, a second flow channel 12 is formed between the right end face of the left-side machining cathode 1 and the left end face of the right-side machining cathode 1. The upper part of the right end face of the left-side machining cathode 1 is a contoured surface that matches the blade profile, and the upper part of the left end face of the right-side machining cathode 1 is a contoured surface that matches the blade profile, so that the required profile of the blade can be electrolytically machined.

[0060] It is understood that the temperature-controlled and localized integral bladed disk roughing and finishing combined electrolytic machining apparatus of the present invention is not limited to processing bladed disks.

[0061] like Figures 1-4 As shown, the temperature-controlled and localized integral bladed disk roughing and finishing combined electrolytic machining method of the present invention is implemented using the temperature-controlled and localized integral bladed disk roughing and finishing combined electrolytic machining device of the present invention. The temperature-controlled and localized integral bladed disk roughing and finishing combined electrolytic machining method includes the following three steps.

[0062] S1. The zoned temperature control liquid supply assembly 2 is in the first state to supply high-temperature electrolyte to the first flow channel 11 and low-temperature electrolyte to the second flow channel 12. The high-temperature electrolyte in the first flow channel 11 is discharged from the outlet. When the zoned temperature control liquid supply assembly 2 is in the first state, two adjacent processing cathodes 1 are fed towards the center of the bladed disk blank along the radial direction of the bladed disk blank, so that each processing cathode 1 electrolyzes and generates blade cascade channels on the bladed disk blank, and blade blanks are formed between two adjacent blade cascade channels.

[0063] Specifically, two processing cathodes 1 are moved to the outer periphery of the impeller blank, and the two processing cathodes 1 are arranged at intervals in the circumferential direction of the impeller blank. The two processing cathodes 1 are driven to feed radially toward the center of the impeller blank. While feeding radially, the liquid supply pump 23 is turned on to supply electrolyte to the first vortex cooler 21 and the second vortex cooler 22 simultaneously. The first switching valve connects the first high-temperature electrolyte inlet to the first flow channel 11 and isolates the first low-temperature electrolyte inlet from the first flow channel 11, so that the high-temperature electrolyte generated by the first vortex cooler 21 enters the first flow channel 11. The second switching valve isolates the second high-temperature electrolyte inlet from the second flow channel 12 and isolates the second low-temperature electrolyte inlet from the second flow channel 12. The electrolyte inlet is connected to the second flow channel 12 so that the low-temperature electrolyte generated by the second vortex cooler 22 enters the second flow channel 12. The high-temperature electrolyte in the first flow channel 11 is discharged through multiple nozzles 13. Therefore, as the processing cathode 1 is fed radially, the part of the bladed disk blank located in front of the top of the processing cathode 1 is continuously electrolyzed and dissolved. When the processing cathode 1 stops moving, the blade cascade channel is formed by electrolytic processing. Since the second flow channel 12 between the two processing cathodes 1 has a certain interval, and the low-temperature electrolyte in the second flow channel 12 has a certain inhibitory effect on electrolytic dissolution due to its low temperature, the bladed disk blank is formed in the second flow channel 12 as the blade cascade channel is formed.

[0064] S2, the partition temperature control liquid supply assembly 2 is in the second state to supply low-temperature electrolyte to the first flow channel 11 and high-temperature electrolyte to the second flow channel 12, the low-temperature electrolyte in the first flow channel 11 is discharged by the outlet, and when the partition temperature control liquid supply assembly 2 is in the second state, the two adjacent processing cathodes 1 are fed towards each other to electrolytically produce a blade from the blade blank, and the processing cathode 1 is withdrawn from the corresponding cascade channel.

[0065] Specifically, after the cascade channel and the blade blank are formed, the liquid supply pump 23 still simultaneously supplies electrolyte to the first vortex refrigeration device 21 and the second vortex refrigeration device 22, the first switching valve disconnects the first high-temperature electrolyte inlet from the first flow channel 11 and connects the first low-temperature electrolyte inlet to the first flow channel 11, so that the low-temperature electrolyte produced by the first vortex refrigeration device 21 enters the first flow channel 11, and the second switching valve connects the second high-temperature electrolyte inlet to the second flow channel 12 and disconnects the second low-temperature electrolyte inlet from the second flow channel 12, so that the high-temperature electrolyte produced by the second vortex refrigeration device 22 enters the second flow channel 12, and the low-temperature electrolyte in the first flow channel 11 is discharged by the plurality of nozzles 13, at this time, the part of the blade disc blank located in front of the top end of the processing cathode 1 is no longer electrolytically dissolved under the inhibition of the low-temperature electrolyte, the two processing cathodes 1 are fed towards each other, and the blade blank is electrolytically finished to form a blade under the electrolysis of the high-temperature electrolyte in the second flow channel 12, and after the blade is formed, the processing cathode 1 is withdrawn from the corresponding cascade channel.

[0066] S3, the blade disc blank is rotated by a certain angle around the axial direction of the blade disc blank, and steps S1 and S2 are repeated after each rotation until the required number of blades are electrolytically produced from the blade disc blank.

[0067] Specifically, the blade disc blank is rotated by a certain angle around the axial direction of the blade disc blank, and steps S1 and S2 are repeated after the rotation to electrolytically process the next blade, and in the process of processing the next blade, one of the two processing cathodes 1 is located in the already processed cascade channel during the process of step S1, so that when the processing cathode 1 moves in the radial direction of the blade disc blank, the front of the top end of the processing cathode 1 is no longer electrolytically dissolved, but cooperates with the other processing cathode 1 to form the next blade blank, and then electrolytically dissolves the next blade blank into a blade during the process of step S2. By rotating the blade disc blank multiple times and repeating steps S1 and S2 after each rotation, the required blades are processed from the blade disc blank.

[0068] In the description of the application, it should be understood that the terms "center", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0069] In addition, the terms "first", "second" are only used to distinguish, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0070] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0071] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0072] In this disclosure, the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" mean that a particular feature, structure, material, or characteristic is included in at least one embodiment or example of the present disclosure. The illustrative appearances of the above-mentioned terms in various places in the specification are not necessarily referred to the same embodiment or example. Moreover, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples. Furthermore, the terminology "comprising" is used in the disclosure as comprising, but not limited to, any indicated features, integers, steps or components. It is also to be understood that the terminology "comprising" can be replaced by the terminology "consisting of" or "consisting essentially of" in some embodiments or examples.

[0073] Although the above-mentioned embodiments have been shown and described, it is to be understood that the above-mentioned embodiments are exemplary, and should not be understood as limiting the present disclosure, and the changes, modifications, replacements and variations of the above-mentioned embodiments made by those skilled in the art are within the protection scope of the present disclosure.

Claims

1. A temperature-controlled localized bulk blisk rough-finish combined electrochemical machining device, characterized in that, The application relates to a processing cathode (1) provided with a first flow channel (11) forming an outlet at the end of the processing cathode (1), and at least two processing cathodes (1) forming a second flow channel (12) between two adjacent processing cathodes (1); a partitioned temperature-controlled liquid supply assembly (2) connected with the first flow channel (11) and the second flow channel (12), and provided with a first state and a second state, in the first state, the partitioned temperature-controlled liquid supply assembly (2) supplies high-temperature electrolyte to the first flow channel (11) and low-temperature electrolyte to the second flow channel (12), and in the second state, the partitioned temperature-controlled liquid supply assembly (2) supplies low-temperature electrolyte to the first flow channel (11) and high-temperature electrolyte to the second flow channel (12). The wall of the first flow channel (11) is provided with a heat insulation layer. The temperature of the high-temperature electrolyte is 30-50 DEG C, and the temperature of the low-temperature electrolyte is -10-20 DEG C.

2. The temperature-controlled localized bulk blisk rough-finish combined electrochemical machining device according to claim 1, wherein, The temperature of the low-temperature electrolyte is higher than the freezing point of electrolyte by 5 DEG C or above.

3. The temperature-controlled localized blisk rough-finish combined electrochemical machining device according to claim 2, wherein, The outlet comprises a plurality of nozzles (13) arranged on the end surface of the processing cathode (1), and the diameter of the nozzles (13) is 0.1-3 mm.

4. The temperature-controlled localized blisk rough-finish combined electrochemical machining device according to claim 3, wherein, The partitioned temperature-controlled liquid supply assembly (2) comprises:

5. The temperature-controlled localized blisk rough-finish combined electrochemical machining device according to claim 1, wherein, A first switch valve connected with the first flow channel (11), and provided with a first high-temperature electrolyte inlet and a first low-temperature electrolyte inlet, and capable of controlling the on-off of the first high-temperature electrolyte inlet and the first flow channel (11) and the on-off of the first low-temperature electrolyte inlet and the first flow channel (11); and a second switch valve connected with the second flow channel (12), and provided with a second high-temperature electrolyte inlet and a second low-temperature electrolyte inlet, and capable of controlling the on-off of the second high-temperature electrolyte inlet and the second flow channel (12) and the on-off of the second low-temperature electrolyte inlet and the second flow channel (12).

6. The temperature-controlled localized blisk rough-finish combined electrochemical machining device according to claim 1, wherein, The partitioned temperature-controlled liquid supply assembly (2) further comprises: A first vortex refrigerating device (21) provided with a first high-temperature electrolyte outlet connected with the first high-temperature electrolyte inlet and a first low-temperature electrolyte outlet connected with the first low-temperature electrolyte inlet; and a second vortex refrigerating device (22) provided with a second high-temperature electrolyte outlet connected with the second high-temperature electrolyte inlet and a second low-temperature electrolyte outlet connected with the second low-temperature electrolyte inlet. ​ 7. The temperature-controlled localized blisk rough-finish combined electrochemical machining device according to claim 6, wherein, ​ ​ ​ 8. The temperature-controlled localized blisk rough-finish combined electrochemical machining device according to claim 7, wherein, The partition temperature control liquid supply assembly (2) further comprises a liquid supply pump (23) in communication with the first vortex refrigeration device (21) and the second vortex refrigeration device (22) to supply electrolyte to the first vortex refrigeration device (21) and the second vortex refrigeration device (22).

9. The temperature-controlled localized blisk rough-finish combined electrochemical machining device according to claim 1, wherein, The temperature control and localized integral blisk rough-finish combined electrochemical machining device is used for machining a blisk (3), and at least part of a wall surface of the machining cathode (1) forming the second flow channel (12) is a profiling surface matched with a profile of a blade.

10. A rough and finish combined electrochemical machining method for temperature-controlled localized bulk blisk, characterized in that, The temperature control and localized integral blisk rough-finish combined electrochemical machining method comprises the following steps: S1, the partition temperature control liquid supply assembly (2) is in the first state to supply high-temperature electrolyte to the first flow channel (11) and low-temperature electrolyte to the second flow channel (12), and the high-temperature electrolyte in the first flow channel (11) is discharged through the outlet; when the partition temperature control liquid supply assembly (2) is in the first state, two adjacent machining cathodes (1) are fed along the radial direction of the blisk blank towards the center of the blisk blank, so that each machining cathode (1) electrolytically generates a blade row channel on the blisk blank, and a blade blank is formed between two adjacent blade row channels; S2, the partition temperature control liquid supply assembly (2) is in the second state to supply low-temperature electrolyte to the first flow channel (11) and high-temperature electrolyte to the second flow channel (12), and the low-temperature electrolyte in the first flow channel (11) is discharged through the outlet; when the partition temperature control liquid supply assembly (2) is in the second state, two adjacent machining cathodes (1) are fed towards each other, so that the blade blank electrolytically generates a blade, and the machining cathode (1) is withdrawn from the corresponding blade row channel; S3, the blisk blank is rotated by a certain angle around the axial direction of the blisk blank in sequence, and steps S1 and S2 are repeated after each rotation until the blisk blank electrolytically generates a required number of blades.

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