Auxiliary processing device and online detection method for rotary electrochemical processing

Abstract

The present invention discloses an auxiliary processing device and online detection method for rotary electrochemical machining, relating to the technical field of rotary electrochemical machining. The auxiliary processing device for rotary electrochemical machining comprises: a liquid supply assembly and a detection assembly, the liquid supply assembly being disposed at least at one end of a machining area; the liquid supply assembly being configured to supply electrolyte only to the machining area; and a detection assembly disposed on one side of the machined area of ​​an anode workpiece, configured to detect the profile of the machined surface of the anode workpiece and calculate the surface corrosion depth and real-time machining gap. The present invention enables real-time detection of machining status and quality, thereby improving the machining quality of thin-walled annular parts and advancing the maturity of this technology.

Description

Technical Field

[0001] The present invention relates to the technical field of rotary electrolytic machining, and in particular to an auxiliary machining device and an online detection method for rotary electrolytic machining. Background Art

[0002] Annular thin-walled structural components are widely used in aerospace, defense, and other fields, such as aircraft engine casings, rocket fuel tanks, and missile ammunition barrels. These components require a balance between strength and weight reduction, so they are typically made of high-strength high-temperature alloys or titanium alloys, with thicknesses of only 1-3mm. This results in traditional machining processes subjecting them to significant deformation, tool wear, long machining cycles, and high costs. While chemical milling does not pose machining stress issues, the strong acid and alkaline solutions it uses are harmful to both workers and the environment, making them inconsistent with current green and environmentally friendly machining practices.

[0003] Electrolytic machining is a non-contact, stress-free special machining method that uses a neutral salt solution for electrical conduction and utilizes electrical energy to dissolve and remove the workpiece surface material in the form of ions. It has the advantages of high machining precision, high efficiency, and low cost. Rotary electrolytic machining is a machining solution proposed by the inventors to address the manufacturing difficulties of annular thin-walled parts made of difficult-to-machine materials. This method uses a single rotating body electrode to achieve one-time machining and forming of thin-walled annular components. However, the currently used immersion flow field is not only not conducive to the timely discharge of the processed products, but also unable to detect the machining process, which is not conducive to the control of machining quality and further research on process methods. Therefore, a new solution is urgently needed to solve the above problems.

[0004] It is necessary to design a device and method that facilitates online detection of rotary electrolysis to simplify the flow field design and realize real-time detection of processing status and quality, thereby improving the processing quality of thin-walled annular parts and promoting the maturity of this technology. Summary of the Invention

[0005] The purpose of the present invention is to provide an auxiliary processing device and an online detection method for rotary electrochemical processing to solve the problems existing in the above-mentioned prior art, realize real-time detection of processing status and quality, thereby improving the processing quality of thin-walled annular parts and promoting the maturity of this technology.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] The present invention provides an auxiliary processing device for rotary electrochemical processing, comprising:

[0008] a liquid supply assembly, which is provided at least at one end of the processing area; the liquid supply assembly is configured to supply electrolyte only to the processing area; and

[0009] The detection component is arranged on one side of the processed area of ​​the anode workpiece and is used to detect the contour of the processed surface of the anode workpiece and calculate the corrosion depth of the workpiece surface and the real-time processing gap.

[0010] Preferably, it further comprises a flow limiting assembly configured to limit the electrolyte from flowing out of the processing area along the circumference of the anode workpiece and / or cathode tool.

[0011] Preferably, the liquid supply component is constructed with a main liquid outlet and a main liquid inlet, the main liquid outlet is arranged on one side of the main processing area, the main liquid outlet is long and its extension direction is parallel to the extension direction of the main processing area, the main liquid inlet receives electrolyte from the outside, and the main liquid outlet can discharge the electrolyte to the main processing area.

[0012] Preferably, the liquid supply assembly is constructed with an auxiliary liquid outlet and an auxiliary liquid inlet, the auxiliary liquid outlet is arranged on one side of the auxiliary processing area, the auxiliary liquid inlet receives electrolyte from the outside, and the auxiliary liquid outlet can discharge the electrolyte to the auxiliary processing area.

[0013] Preferably, the current limiting component is constructed with a high-pressure gas outlet and a high-pressure gas inlet, and the high-pressure gas outlet is arranged on the side of the auxiliary processing area away from the main processing area. The high-pressure gas outlet is used to spray high-pressure gas toward the surface of the cathode tool and the anode workpiece and block the electrolyte in the processing area from flowing outward.

[0014] Preferably, a pair of water blocks are also constructed on the current limiting assembly, one side of the water block is an arc-shaped surface matching the cathode tool, the surface of the cathode tool corresponding to the processing area is the processing surface, the water block is arranged on both sides of the circumference of the processing surface, and the arc-shaped surface is close to or in contact with the surface of the cathode tool on both sides of the circumference of the processing surface.

[0015] Preferably, the liquid supply assembly and the current limiting assembly are integrated on the main structure, the main structure is arranged on one side of the processing area, the main structure is provided with the main liquid outlet and the auxiliary liquid outlet on the side facing the processing area, and a high-pressure gas outlet is provided on the side facing the cathode tool and the processed area of ​​the anode workpiece, the water retaining block can be movably provided on the main structure in the direction of approaching and away from the cathode tool, and the main liquid inlet, the auxiliary liquid inlet and the high-pressure gas inlet are provided on the side of the main structure away from the processing area.

[0016] Preferably, the surface material of one side of the main structure facing the auxiliary processing area of ​​the anode workpiece is a conductive material, which is connected to the negative pole of the power supply to form the auxiliary processing area.

[0017] Preferably, the detection component includes a non-contact contour detector, a controller and a data processor; the non-contact contour detector is located in the processed area of ​​the anode workpiece, the controller is communicatively connected to the non-contact contour detector and the data processor, and the non-contact contour detection is used to collect the surface contour of the processed area in real time and calculate the real-time corrosion depth and processing gap size through the data processor.

[0018] The present invention also provides an online detection method for rotary electrochemical machining, comprising:

[0019] Topography acquisition: When the machined surface is transferred to the detection range of the detection component, the non-contact contour detector obtains the workpiece surface topography S (x, y, z) by line laser scanning;

[0020] Corrosion depth calculation: The workpiece surface morphology S (x, y, z) is composed of multiple three-dimensional coordinate points. Let the uncorroded surface morphology of the workpiece be S0 (x0, y0, z0), and the morphology of the corroded area at time t (π / ω, ∞) be S t (x t ,y t ,z t ), the corrosion depth of different areas can be expressed as:

[0021] H(x t ,y t )=z t (x t ,y t )-z0(x0,y0)t∈(π / ω,∞)

[0022] Real-time machining gap calculation: Real-time machining gap δ between anode workpiece and cathode tool t Expressed as:

[0023] δ t =δ0+H(x t-π / ω ,y t-π / ω )-ft t∈(π / ω,∞);

[0024] The anode workpiece rotates clockwise at an angular velocity ω, and the cathode tool performs counter-rotation motion at an angular velocity -ω. The initial machining gap between the two is δ0. At the same time, the cathode tool moves toward the anode workpiece along the center direction of the two circles at a feed speed f.

[0025] Compared with the prior art, the present invention has achieved the following technical effects:

[0026] (1) The present invention solves the problem that the processing process cannot be detected in real time. It can observe the evolution of surface morphology in real time and detect the corrosion depth and processing gap, which is of great significance for studying the evolution process of rotary electrochemical processing.

[0027] (2) The present invention facilitates further online adjustment of processing parameters through real-time detection of the processing status, thereby realizing rotary electrolytic adaptive processing to improve the processing quality of the processed annular thin-walled parts.

[0028] (3) The present invention breaks the traditional immersion liquid supply method of rotary electrolytic machining, which is conducive to simplifying the structure of the tooling fixture (the existing immersion liquid supply method has a complex matching method between the electrolyte tank and the tooling fixture, while the open flow field of the present application does not require sealing, which simplifies the matching method and thus simplifies the tooling fixture structure), shortens its manufacturing cycle, reduces manufacturing costs, and is easy to install and adjust, and simple to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 A schematic structural diagram of the auxiliary processing device for rotary electrochemical processing provided by the present invention;

[0031] Figure 2 It is a half-section schematic diagram of the main structure;

[0032] Figure 3 It is a schematic diagram of the left core structure;

[0033] Figure 4 It is a schematic diagram of the right core structure;

[0034] Figure 5 It is a schematic diagram of the detection component structure;

[0035] Figure 6 It is a cross-sectional view of the main structure as well as the cathode tool and anode workpiece;

[0036] In the figure: 1-anode workpiece; 2-cathode tool; 3-liquid supply assembly; 4-current limiting assembly; 5-detection assembly; 6-left core; 7-right core; 8-left cover; 9-right cover; 10-lower cover; 11-rear cover; 12-flow equalizing plate; 13-water retaining block; 14-pressure spring; 15-guide stud; 16-non-contact profile detector; 17-controller; 18-data processor; 19-main channel; 20-auxiliary channel. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] The present invention provides an auxiliary processing device for rotary electrochemical processing, such as Figures 1 to 6 As shown, it includes: a liquid supply component 3 and a detection component 5. The liquid supply component 3 is constructed to supply electrolyte only to the processing area. It can be understood that, different from the existing immersion liquid supply method, the present invention only discharges, jets, and sprays the electrolyte to the processing area, which can divide the anode workpiece 1 into a processed area and a processing area. The processing area is located in the processing area, and the processed area is located in the non-processing area, which makes it convenient to arrange the detection component 5 in the non-processing area to detect the contour of the processed surface of the anode workpiece 1 and calculate the surface corrosion depth of the workpiece and the real-time processing gap.

[0040] Normally, the cathode tool 2 and the anode workpiece 1 are arranged relative to each other with a gap between them, and the gap is the above-mentioned processing area. Therefore, a liquid supply component 3 should be set at least at one end of the processing area. The liquid supply component 3 supplies the electrolyte into the processing area from any one side or both sides. Under the action of gravity, the electrolyte flows downward, thereby flushing the corrosive materials on the anode workpiece 1, thereby facilitating the timely discharge of the processed products, and the processing process can be detected by the detection component 5, which is helpful for the control of processing quality and further research on the process method.

[0041] The above embodiment does not limit the structure and type of the liquid supply component 3 and the detection component 5, that is, as long as the liquid supply component 3 can discharge, jet, or spray the electrolyte into the processing area, the detection component 5 can detect the contour of the processed surface of the anode workpiece 1 and calculate the corrosion depth of the workpiece surface and the real-time processing gap.

[0042] Considering that when the anode workpiece 1 and the cathode tool 2 rotate, the electrolyte between the two will flow along the circumferential direction, and then flow out from the processing area, which may easily lead to problems such as lack of electrolyte in the processing area. In order to solve this problem, based on the above embodiment, the present invention also provides the following embodiment, which also includes a current limiting component 4, which is constructed to limit the electrolyte from flowing out of the processing area along the circumferential direction of the anode workpiece 1 and / or the cathode tool 2.

[0043] This embodiment utilizes a current limiting component 4 to limit the flow of the electrolyte. Specifically, a high-pressure gas curtain or gas hood can be formed by spraying gas toward the surface of the cathode tool 2 and the anode workpiece 1 to prevent the electrolyte from flowing out. Of course, some physical structures such as water blocks 13 can also be used to limit the electrolyte. It can be understood that in some embodiments, a high-pressure gas curtain or gas hood or physical structures such as water blocks 13 can be formed separately to limit the electrolyte, or the two can be used in combination to improve the current limiting effect.

[0044] In some embodiments, this embodiment uses a high-pressure gas curtain to limit the flow. Specifically, the flow limiting component 4 is constructed with a high-pressure gas outlet and a high-pressure gas inlet. The high-pressure gas outlet is arranged on the side of the auxiliary processing area away from the main processing area. The high-pressure gas outlet is used to spray high-pressure gas toward the surface of the cathode tool 2 and the anode workpiece 1 and block the electrolyte in the processing area from flowing outward.

[0045] The high-pressure gas inlet in this embodiment is used to connect to the high-pressure gas source. It can be understood that a flow channel connecting the high-pressure gas outlet and the high-pressure gas inlet must be provided in the flow limiting component 4. The high-pressure gas outlet is preferably long and strip-shaped to form a high-pressure gas curtain on one side of the auxiliary processing area.

[0046] In addition, this embodiment uses a high-pressure air curtain to dry the anode workpiece 1 to improve the accuracy of subsequent surface profile detection.

[0047] In some embodiments, this embodiment uses a water block 13 to limit the flow. Specifically, a pair of water blocks 13 are also constructed on the current limiting component 4. One side of the water block 13 is an arc-shaped surface that matches the cathode tool 2. The surface of the cathode tool 2 corresponding to the processing area is the processing surface. The water blocks 13 are arranged on both sides of the processing surface in the circumferential direction, and the arc-shaped surfaces are close to or in contact with the surface of the cathode tool 2 on both sides of the circumferential direction of the processing surface.

[0048] In some embodiments, the water block 13 is configured to be disposed along a surface close to and away from the cathode tool 2 so as to adjust the gap therebetween.

[0049] In some embodiments, the liquid supply component 3 is constructed with a main liquid outlet and a main liquid inlet. The main liquid outlet is arranged on one side of the main processing area. The main liquid outlet is long and its extension direction is parallel to the extension direction of the main processing area. The main liquid inlet receives electrolyte from the outside, and the main liquid outlet can discharge the electrolyte to the main processing area.

[0050] This embodiment utilizes a main liquid inlet parallel to the main processing area to discharge, spray or jet electrolyte into it, so as to improve the uniformity of the electrolyte in the main processing area and thereby improve the processing quality. In addition, it is preferred to use two liquid supply components 3, that is, a liquid supply component 3 is provided on both sides of the main processing area, and the two liquid supply components 3 are opposed to each other, so as to block the electrolyte jets from being ejected from the main processing area.

[0051] In some embodiments, multiple main liquid outlets and main liquid inlets can be provided, that is, one main liquid outlet corresponds to one main liquid inlet, or one main liquid outlet corresponds to multiple main liquid inlets and one main liquid inlet corresponds to multiple main liquid outlets.

[0052] In some embodiments, a flow balancing component may be provided between the main liquid outlet and the main liquid inlet to improve the uniformity of the electrolyte flow. For example, a flow balancing plate 12 may be provided. The flow balancing plate 12 is formed by welding a stainless steel plate with uniformly distributed circular holes and a stainless steel cylinder together through a small cylinder, and the two are kept at a certain distance and fixed in the flow channel between the main liquid outlet and the main liquid inlet through the stainless steel plate.

[0053] In some embodiments, in order to increase the pressure between the main liquid outlets, the flow channel between the main liquid outlet and the main liquid inlet can be set to have a cross-section that gradually becomes smaller in the direction approaching the main liquid outlet to increase the liquid outlet pressure and improve the jet effect. For example, the flow channel cross-section can be set to a water drop shape.

[0054] In some embodiments, the liquid supply component 3 is constructed with an auxiliary liquid outlet and an auxiliary liquid inlet. The auxiliary liquid outlet is arranged on one side of the auxiliary processing area. The auxiliary liquid inlet receives electrolyte from the outside, and the auxiliary liquid outlet can discharge the electrolyte to the auxiliary processing area.

[0055] In this embodiment, there are two auxiliary processing areas, one on each side of the main processing area, and the two are connected. In the present invention, multiple auxiliary liquid outlets can be provided, each of which is arranged in parallel to form a comb-shaped liquid outlet, which is to accommodate a wider auxiliary processing area.

[0056] In some embodiments, the liquid supply component 3 and the current limiting component 4 are integrated on the main structure, the main structure is arranged on one side of the processing area, the main structure is provided with a main liquid outlet and an auxiliary liquid outlet on the side facing the processing area, and a high-pressure gas outlet is provided on the side facing the cathode tool 2 and the processed area of ​​the anode workpiece 1. The water retaining block 13 can be movably provided on the main structure in the direction of approaching and moving away from the cathode tool 2, and the main liquid inlet, an auxiliary liquid inlet and a high-pressure gas inlet are provided on the side of the main structure away from the processing area.

[0057] In this embodiment, the liquid supply component 3 and the flow limiting component 4 are integrated to reduce the overall size.

[0058] Taking into account the need to open flow channels, outlets and inlets and other structures on the main structure, in order to facilitate the processing of the above structures, the main structure is set to a detachable style, for example, it can be divided into an inner core, an upper cover plate, a lower cover plate 10 and a rear cover plate 11, that is, it is sufficient to open a flow channel connecting the outlet and the inlet on the inner core, and the outlet and the inlet are opened on each cover plate.

[0059] The flow channel connecting the main liquid inlet and the main liquid outlet is the main flow channel, which is arranged in the middle of the inner core. Considering that the flow equalizing plate 12 needs to be arranged in the main flow channel, the inner core is divided into a left core 6 and a right core 7. After the two are spliced ​​together, a main flow channel is formed between them and the flow equalizing plate 12 is clamped and fixed.

[0060] In some embodiments, the surface material of one side of the main structure facing the auxiliary processing area of ​​the anode workpiece 1 is a conductive material, which is connected to the negative pole of the power supply to form the auxiliary processing area.

[0061] In this embodiment, the upper cover plate includes a left cover plate 8 and a right cover plate 9. Therefore, the left core body 6, the left cover plate 8 and the current equalizing plate 12 are set to S304 stainless steel, and the remaining structural materials are all 3240 epoxy materials; the left core body 6 and the left cover plate 8 are connected to the negative pole of the external DC power supply and form an auxiliary processing area on the anode workpiece 1.

[0062] In some embodiments, in order to enable the water block 13 to move forward and backward, a pressure spring 14 and a guide stud 15 are also included. The water block 13 is installed in the right core 7 and maintains a clearance fit. A threaded hole is opened on one side to connect it with the guide stud 15; the pressure spring 14 is sleeved on the guide stud 15, so that the curved side of the water block 13 can be close to the cathode tool 2, thereby limiting the electrolyte flow area.

[0063] In some embodiments, the detection component 5 includes a non-contact contour detector 16, a controller 17 and a data processor 18; the non-contact contour detector 16 is located in the processed area of ​​the anode workpiece 1, and the controller 17 is communicatively connected to the non-contact contour detector 16 and the data processor 18. The non-contact contour detection is used to collect the surface contour of the processed area in real time and calculate the real-time corrosion depth and processing gap size through the data processor 18.

[0064] During machining, the anode workpiece 1 rotates clockwise at an angular velocity ω, while the cathode tool 2 counter-rotates at an angular velocity -ω. The initial machining gap between the two is δ0. Simultaneously, the cathode tool 2 moves toward the anode workpiece 1 at a feed rate f, along the center of the two circles. The high-speed electrolyte flow fills the main and auxiliary machining areas thanks to the processing area's liquid supply components and the non-processing area's current limiting components. An external DC power supply forms a closed circuit between the anode workpiece 1, the cathode tool 2, and the left core. Unprotected material on the anode workpiece 1 begins to dissolve and remove, gradually forming a specific surface morphology.

[0065] The embodiment of the present invention further provides an online detection method for electrochemical rotary machining, comprising:

[0066] Topography acquisition: When the machined surface is transferred to the detection range of the detection component, the non-contact contour detector obtains the workpiece surface topography S (x, y, z) by line laser scanning;

[0067] Corrosion depth calculation: The workpiece surface morphology S (x, y, z) is composed of multiple three-dimensional coordinate points. Let the uncorroded surface morphology of the workpiece be S0 (x0, y0, z0), and the morphology of the corroded area at time t (π / ω, ∞) be S t (x t ,y t ,z t ), the corrosion depth of different areas can be expressed as:

[0068] H(x t ,y t )=z t (x t ,y t )-z0(x0,y0)t∈(π / ω,∞)

[0069] Real-time machining gap calculation: Real-time machining gap δ between anode workpiece 1 and cathode tool 2 t Expressed as:

[0070] δ t =δ0+H(x t-π / ω ,y t-π / ω )-ft t∈(π / ω,∞);

[0071] The anode workpiece 1 rotates clockwise at an angular velocity ω, while the cathode tool 2 counter-rotates at an angular velocity -ω. The initial machining gap between the two is δ0. Simultaneously, the cathode tool 2 moves toward the anode workpiece 1 at a feed rate f, along the center of the two circles. The processing area liquid supply assembly and the non-processing area current limiting assembly fill the main and auxiliary processing areas with high-speed electrolyte. An external DC power supply forms a closed circuit between the anode workpiece 1, the cathode tool 2, and the left core. Unprotected material on the anode workpiece 1 begins to dissolve and remove, gradually forming a specific surface morphology.

[0072] It can be seen from the actual processing process that when t∈(0,π / ω), δ t =δ0-ft.

[0073] The online detection method for rotary electrochemical machining provided in this embodiment can detect the machining status in real time, which is conducive to further online adjustment of machining parameters, thereby realizing rotary electrochemical adaptive machining to improve the machining quality of the machined annular thin-walled parts.

[0074] It solves the problem that the processing process cannot be detected in real time. It can observe the evolution of surface morphology in real time and detect the corrosion depth and processing gap. It is of great significance to the study of the evolution process of rotary electrochemical processing.

[0075] The position of the non-contact contour detector does not change, and the anode workpiece 1 rotates to detect the entire surface contour of the anode workpiece 1. The line laser covers the entire length direction of the anode workpiece 1, thereby realizing a complete and continuous scan of the surface of the anode workpiece 1. The multiple detection results are then combined and unfolded in a flat form, which is equivalent to unfolding the arc surface of the workpiece in the form of a plane.

[0076] Note: The above δ t and δ0 both refer to the minimum machining gap, that is, the minimum distance between the arc surfaces of the anode workpiece 1 and the cathode tool 2, and the detection line (detection range) of the non-contact contour detector and the line on the anode workpiece 1 corresponding to the minimum machining gap are coplanar with the central axis of the anode workpiece 1.

[0077] In some embodiments, when a grid structure needs to be processed on the anode workpiece 1, the corresponding part of the workpiece needs to be covered with a protective material, and only the part without the covering material is corroded. Therefore, the uncorroded surface morphology S0 (x0, y0, z0) in the above embodiment can represent the coordinates of a certain point on the surface contour of the workpiece covered with the protective material.

[0078] When the surface profile of the anode workpiece 1 is smooth, the uncorroded surface morphology is S0 (x0, y0, z0), which represents the coordinates of a certain point on the surface profile of the workpiece before processing.

[0079] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. An auxiliary processing device for rotary electrochemical processing, characterized in that: include: a liquid supply assembly, the liquid supply assembly being arranged at least at one end of the processing area; The liquid supply assembly is configured to supply electrolyte only to the processing area; as well as A detection component is arranged on one side of the processed area of ​​the anode workpiece, and is used to detect the profile of the processed surface of the anode workpiece and calculate the corrosion depth of the workpiece surface and the real-time processing gap; it also includes a current limiting component, which is constructed to limit the outflow of the electrolyte from the processing area along the circumferential direction of the anode workpiece and the cathode tool; the liquid supply component is constructed with a main liquid outlet and a main liquid inlet, the main liquid outlet is arranged on one side of the main processing area, the main liquid outlet is long and its extension direction is parallel to the extension direction of the main processing area, the main liquid inlet receives electrolyte from the outside, and the main liquid outlet can discharge the electrolyte to the main processing area; the liquid supply component is constructed with an auxiliary liquid outlet and an auxiliary liquid inlet, the auxiliary liquid outlet is arranged on one side of the auxiliary processing area, the auxiliary liquid inlet receives electrolyte from the outside, and the auxiliary liquid outlet can discharge the electrolyte to the auxiliary processing area; the current limiting component is constructed with a high-pressure gas outlet and a high-pressure gas inlet, and the high-pressure gas outlet is arranged on the side of the auxiliary processing area away from the main processing area. The high-pressure gas outlet is used to spray high-pressure gas toward the surface of the cathode tool and the anode workpiece and block the electrolyte in the processing area from flowing outward; the current limiting assembly is also constructed with a pair of water blocks, one side of the water block is an arc-shaped surface matching the cathode tool, the surface of the cathode tool corresponding to the processing area is the processing surface, the water blocks are arranged on both sides of the processing surface in the circumferential direction, and the arc-shaped surfaces are close to or in contact with the surfaces of the cathode tool on both sides of the processing surface in the circumferential direction; the liquid supply assembly and the current limiting assembly are integrated on the main structure, the main structure is arranged on one side of the processing area, the main liquid outlet and the auxiliary liquid outlet are provided on the side of the main structure facing the processing area, and the high-pressure gas outlet is provided on the side facing the cathode tool and the processed area of ​​the anode workpiece, the water block can be movably arranged on the main structure along the direction approaching and away from the cathode tool, and the main liquid inlet, the auxiliary liquid inlet and the high-pressure gas inlet are provided on the side of the main structure away from the processing area.

2. The auxiliary processing device for rotary electrochemical processing according to claim 1, characterized in that: The surface material of one side of the main structure facing the anode workpiece auxiliary processing area is a conductive material, which is connected to the negative electrode of the power supply to form the auxiliary processing area.

3. The auxiliary processing device for rotary electrochemical processing according to claim 1, characterized in that: The detection component includes a non-contact contour detector, a controller and a data processor; the non-contact contour detector is located in the processed area of ​​the anode workpiece, the controller is communicatively connected to the non-contact contour detector and the data processor, and the non-contact contour detection is used to collect the surface contour of the processed area in real time and calculate the real-time corrosion depth and processing gap size through the data processor.

4. A method for online detection of electrochemical rotary machining, characterized in that: Electrolytic machining is assisted by the auxiliary machining device for rotary electrolytic machining according to any one of claims 1 to 3, comprising: Topography acquisition: When the machined surface is transferred to the detection range of the detection component, the non-contact contour detector obtains the workpiece surface topography S (x, y, z) by line laser scanning; Corrosion depth calculation: The workpiece surface morphology S (x, y, z) is composed of multiple three-dimensional coordinate points. Let the uncorroded surface morphology of the workpiece be S0 (x0, y0, z0), and the morphology of the corroded area at time t (π / ω, ∞) be S t (x t ,y t ,z t ), the corrosion depth of different areas can be expressed as: H(x t ,y t )=z t (x t ,y t )−z0(x0,y0)t∈(π / ω,∞) Real-time machining gap calculation: Real-time machining gap δ between anode workpiece and cathode tool t Expressed as: d t =δ0+H(x t-π / ω ,y t-π / ω )-ft t∈(π / ω,∞); The anode workpiece rotates clockwise at an angular velocity ω, and the cathode tool performs counter-rotation motion at an angular velocity -ω. The initial machining gap between the two is δ0. At the same time, the cathode tool moves toward the anode workpiece along the center direction of the two circles at a feed speed f.

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