A cathode shaking and phase-divided power supply scanning tooth profile modification method and device

Abstract

The present application provides a cathode shaking and phase-divided power supply scanning tooth shaping method, the method involves calling a cathode shaking device to perform electrolytic shaping on a workpiece to be processed, including the steps of: obtaining a target structural model of the workpiece to be processed; determining the shaking frequency and shaking amplitude of the cathode tool of the cathode shaking device during electrolytic shaping according to the target structural model; shaking the cathode according to the shaking frequency and shaking amplitude, so that the gap between the cathode tool and the workpiece to be processed changes periodically, and performing power supply processing on the phase where the gap is less than a preset value; when the gap between the cathode tool and the shaken workpiece to be processed is greater than or equal to the preset value, stop processing and obtain the target structural workpiece. Through the cathode shaking device, the electrode shaking motion makes the electrolyte flow uniform, intermittent processing, forcing the flow field to change periodically, getting rid of the split flow state, and thoroughly flushing the processing surface, thereby improving the processing accuracy.

Description

Technical Field

[0001] The present application relates to the field of electrical machining, and in particular to a cathode shaking and phase-divided power supply scanning type tooth profile modification method and device. Background Art

[0002] At present, there is no mature tooth profile modification method and equipment for micro-tooth joints with small size, non-full teeth and high customization. The mechanical tooth profile modification method used for conventional scale gears is suitable for conventional full-tooth gears produced on a large scale. However, when modifying the tooth profile of micro-tooth joints, the tool manufacturing is difficult, the tool trajectory is easy to interfere with other compact structures of the micro-tooth joint, and the processing process is limited by the hardness of the workpiece. Electrolytic tooth profile modification is a non-contact processing with high flexibility, no need for complex multi-axis linkage, and is not limited by the hardness and strength of the material. In addition, the electrochemical dissolution can also level the anode tooth surface while modifying the tooth profile.

[0003] However, electrolytic tooth modification also has problems such as stray corrosion and difficult to control gap flow field, as well as complex coupling relationship of processing parameters. In addition, due to the physical properties of the electrolyte, the electrolysis process is prone to produce bubbles that are easy to grow and difficult to break, which restricts the improvement of modification accuracy and tooth surface quality. Summary of the invention

[0004] In view of the above problems, the present application is proposed to provide a cathode shaking and phase-divided power supply scanning type tooth profile modification method that overcomes the above problems or at least partially solves the above problems. The method involves calling a cathode shaking device to perform electrolytic modification on a workpiece to be processed, comprising the steps of:

[0005] Acquire a target structural model of a workpiece to be processed;

[0006] Determining the shaking frequency and shaking amplitude of the cathode tool of the cathode shaking device during electrolytic shaping according to the target structure model;

[0007] The cathode is shaken according to the shaking frequency and the shaking amplitude, so that the gap between the cathode tool and the workpiece to be processed changes periodically, and the phase where the gap is smaller than a preset value is powered for processing;

[0008] When the gap between the cathode tool and the shaking workpiece to be processed is greater than or equal to a preset value, the processing is stopped to obtain a workpiece with a target structure.

[0009] Furthermore, the step of determining the shaking frequency and shaking amplitude of the cathode tool of the cathode shaking device during electrolytic shaping according to the target structure model includes:

[0010] The target structure model is layered according to the cathode tool thickness to obtain a plurality of layers of target structure models;

[0011] The shaking frequency and shaking amplitude of the cathode tool at the position of the layer target structure model are determined according to the layer target structure model.

[0012] Furthermore, during electrolytic machining, power is supplied by a pulse power supply, which supplies power only in the phase when the gap between the cathode tool and the workpiece to be machined is smaller than a preset value, and the pulse current changes periodically with the gap.

[0013] Furthermore, the step of shaking the cathode according to the shaking frequency and the shaking amplitude so that the gap between the cathode tool and the workpiece to be processed changes periodically and supplying power to process the phase where the gap is smaller than a preset value comprises:

[0014] Shaking the cathode tool according to the shaking frequency and shaking amplitude;

[0015] Electrolytic machining is performed on the workpiece to be machined by using the pulse power supply in a phase-by-phase manner;

[0016] The workpiece to be processed is scanned from the bottom layer to the top layer according to the shaking frequency and the shaking amplitude.

[0017] Furthermore, the method further comprises the steps of:

[0018] The structure of the cathode is determined according to the structure of the workpiece to be processed and the target structure model.

[0019] Further:

[0020] Determining the cathode tool material according to the workpiece material to be processed;

[0021] Furthermore, the method further comprises the steps of:

[0022] The electrolyte composition is determined according to the workpiece material to be processed and the cathode tool material.

[0023] Furthermore, the method further comprises the steps of:

[0024] The residual electrolyte is cleaned from the workpiece to be processed after electrolytic shaping.

[0025] Furthermore, the method further comprises the steps of:

[0026] The workpiece to be processed is fixed to ensure that the position of the workpiece to be processed does not change during the processing.

[0027] A cathode shaking and phase-divided power supply scanning type tooth profile modification device, the device involves calling the cathode shaking device to perform electrolytic modification on a workpiece to be processed, comprising:

[0028] An acquisition module, used for acquiring a target structural model of a workpiece to be processed;

[0029] A shaking generation module, used to determine the shaking frequency and shaking amplitude of the cathode tool of the cathode shaking device during electrolytic shaping according to the target structure model;

[0030] A shaking processing module, used to shake the cathode according to the shaking frequency and shaking amplitude, so that the gap between the cathode tool and the workpiece to be processed changes periodically, and to power the phase where the gap is smaller than a preset value;

[0031] A generation module is used to stop processing and obtain a target structure workpiece when the gap between the cathode tool and the shaking workpiece to be processed is greater than or equal to a preset value.

[0032] This application has the following advantages:

[0033] In an embodiment of the present application, a cathode shaking and phase-divided power supply scanning tooth shaping method is used, and the method involves calling a cathode shaking device to perform electrolytic shaping on a workpiece to be processed, including the steps of: obtaining a target structural model of the workpiece to be processed; determining the shaking frequency and shaking amplitude of the cathode tool of the cathode shaking device during electrolytic shaping according to the target structural model; shaking the cathode according to the shaking frequency and shaking amplitude, so that the gap between the cathode tool and the workpiece to be processed changes periodically, and performing power supply processing on the phase where the gap is less than a preset value; when the gap between the cathode tool and the shaken workpiece to be processed is greater than or equal to the preset value, stop processing and obtain the target structural workpiece. Through the cathode shaking device, the electrode shaking motion makes the electrolyte flow uniform, intermittent processing, forcing the flow field to change periodically, getting rid of the split flow state, and thoroughly flushing the processing surface, thereby improving the processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the description of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0035] Figure 1 This is a flowchart of the steps of a cathode shaking and phase-divided power supply scanning tooth profile modification method provided by an embodiment of the present application;

[0036] Figure 2 This is a structural block diagram of a cathode shaking and phase-divided power supply scanning type tooth profile modification device provided in one embodiment of the present application;

[0037] Figure 3It is a schematic diagram of the structure of a workpiece to be processed and a cathode electrode provided in one embodiment of the present application;

[0038] Figure 4-7 is a schematic diagram of the periodic swaying of the cathode electrode provided by an embodiment of the present application;

[0039] Figure 8 It is a schematic diagram of pulse current at each stage of shaking provided by an embodiment of the present invention.

[0040] Description of reference numerals:

[0041] 1. Workpiece to be processed; 2. Cathode. DETAILED DESCRIPTION

[0042] In order to make the objects, features and advantages of the present application more obvious and understandable, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0043] It should be noted that in any embodiment of the present invention, the cathode is swung under preset conditions by driving a flexible hinge structure through piezoelectric ceramics or by means of a DC motor, a connecting rod mechanism, etc. The pulse power supply is phase-split power supply, and power is turned on and the shaping is performed only within a certain shaking phase range where the gap of the cathode tool is relatively small. Scanning tooth shaping is performed from one end to the other end. Through the intermittent processing strategy, stray corrosion can be effectively suppressed, the inter-electrode state can be improved, and the processing effect can be enhanced.

[0044] Reference Figure 1 , showing a cathode shaking and phase-divided power supply scanning tooth profile modification method provided by an embodiment of the present application, the method involves calling a cathode shaking device to perform electrolytic modification on a workpiece to be processed;

[0045] The method comprises the steps of:

[0046] S110, obtaining a target structural model of a workpiece to be processed;

[0047] S120, determining the shaking frequency and shaking amplitude of the cathode tool of the cathode shaking device during electrolytic shaping according to the target structure model;

[0048] S130, shaking the cathode according to the shaking frequency and the shaking amplitude, so that the gap between the cathode tool and the workpiece to be processed changes periodically, and powering the phase where the gap is smaller than a preset value for processing;

[0049] S140. When the gap between the cathode tool and the shaken workpiece to be processed is greater than or equal to a preset value, the processing is stopped to obtain a workpiece with a target structure.

[0050] In an embodiment of the present application, a cathode shaking and phase-divided power supply scanning tooth shaping method is used, and the method involves calling a cathode shaking device to perform electrolytic shaping on a workpiece to be processed, including the steps of: obtaining a target structural model of the workpiece to be processed; determining the shaking frequency and shaking amplitude of the cathode tool of the cathode shaking device during electrolytic shaping according to the target structural model; shaking the cathode according to the shaking frequency and shaking amplitude, so that the gap between the cathode tool and the workpiece to be processed changes periodically, and performing power supply processing on the phase where the gap is less than a preset value; when the gap between the cathode tool and the shaken workpiece to be processed is greater than or equal to the preset value, stop processing and obtain the target structural workpiece. Through the cathode shaking device, the electrode shaking motion makes the electrolyte flow uniform, intermittent processing, forcing the flow field to change periodically, getting rid of the split flow state, and thoroughly flushing the processing surface, thereby improving the processing accuracy.

[0051] Next, a cathode shaking and phase-divided power supply scanning type tooth profile modification method in this exemplary embodiment will be further described.

[0052] As described in step S110, a target structure model of the workpiece to be processed is obtained.

[0053] It should be noted that the target structural model of the workpiece to be processed can be a simple regular model structure, such as a prism, a frustum, a gear shape, etc., or it can be a complex structure composed of multiple simple structures. The target structural model of the workpiece to be processed can be established with the assistance of drawing software.

[0054] As described in step S120, the shaking frequency and shaking amplitude of the cathode tool of the cathode shaking device during electrolytic shaping are determined according to the target structure model.

[0055] In one embodiment of the present invention, the specific process of "determining the shaking frequency and shaking amplitude of the cathode tool of the cathode shaking device during electrolytic shaping according to the target structure model" in step S120 can be further explained in combination with the following description.

[0056] As described in the following steps, the target structure model is layered according to the cathode tool thickness to obtain a plurality of layers of target structure models;

[0057] It should be noted that the processing method is scanning processing, feeding layer by layer from the bottom layer to the top layer. The cathode also has different shaking frequencies and shaking amplitudes at different positions. The target structure model needs to be phase-divided according to the cathode thickness. Different cathode shaking methods are called at different positions. According to the current design data, the shaking frequency and shaking amplitude of the cathode are adjusted, and then the optimal combination parameters are obtained to realize the processing of the target structure model.

[0058] As described in the following steps, the shaking frequency and shaking amplitude of the cathode tool at the position of the layer target structure model are determined according to the layer target structure model.

[0059] It should be noted that a number of layer target structure models are generated to achieve the purpose of scanning processing. At different layers, different layer target structure models are called to electrolytically shape complex three-dimensional structures to achieve the purpose of fine processing.

[0060] As described in step S130, the cathode is shaken according to the shaking frequency and the shaking amplitude, so that the gap between the cathode tool and the workpiece to be processed changes periodically, and the phase where the gap is smaller than a preset value is powered for processing.

[0061] It should be noted that the multi-tooth cathode tool is driven to shake in a certain periodic trajectory, such as Figure 4-7 As shown, the gap between the workpiece to be processed and the cathode tool also changes periodically. The shaking motion of the cathode makes the electrolyte flow uniform, forcing the flow field to change periodically, getting rid of the stranded flow state, and thoroughly flushing the processed surface, thereby improving the processing accuracy. The frequency of flow field change is controlled by the shaking frequency, thereby controlling the surface processing accuracy of the workpiece to be processed.

[0062] By changing the shaking amplitude of the cathode, the size of the flow field can be changed. By controlling the size of the flow field during processing, the processing intensity can be controlled, the surface shape of the workpiece to be processed can be changed, and the surface of the workpiece to be processed can be made more precise.

[0063] The transport of inter-electrode electrolysis products and electrolyte renewal directly affect the processing stability, and the alcohol-based high-viscosity electrolyte has a more serious impact on processing stability. Cathode shaking can disturb the inter-electrode flow field and promote the inter-electrode mass transfer and heat transfer process, thereby improving the shaping accuracy and surface quality. By determining the shaking amplitude and shaking frequency of the cathode, the shape and accuracy of the electromachining shaping can be controlled.

[0064] In one embodiment of the present invention, the specific process of step S130 of "shaking the cathode according to the shaking frequency and the shaking amplitude so that the gap between the cathode tool and the workpiece to be processed changes periodically, and powering the phase where the gap is smaller than a preset value" can be further explained in combination with the following description.

[0065] As described in the following steps, the cathode tool is shaken according to the shaking frequency and shaking amplitude.

[0066] As described in the following steps, the workpiece to be processed is electrolytically processed by the pulse power supply in a phase-divided power supply manner.

[0067] The phase power supply, refer to Figure 8 , which is a schematic diagram of the pulse current at each stage of shaking. When the cathode is shaking, it is powered on for electrolytic shaping only within a certain shaking phase range with a smaller gap of the cathode tool, that is, the cathode tool is powered only when the shaking range of the cathode tool in the figure is between ② and ③, and is not powered when the shaking range is between ① and ④. This intermittent processing strategy can suppress stray corrosion, improve the inter-electrode state, and enhance the processing effect.

[0068] As described in the following steps, the workpiece to be processed is scanned from the bottom layer to the top layer according to the shaking frequency and the shaking amplitude. Through scanning processing, feeding upward layer by layer, at different scanning positions, the shaking radius, shaking frequency and processing parameters can be adjusted according to the design data of the current position, and then the best parameter combination can be obtained to achieve the target shaping shape such as drum shape.

[0069] As described in step S140, when the gap between the cathode tool and the shaken workpiece to be processed is greater than or equal to a preset value, the processing is stopped to obtain a workpiece with a target structure.

[0070] In one embodiment of the present invention, the structure of the cathode is determined based on the structure of the workpiece to be processed and the target structure model. Figure 3 As shown, the shape of the peripheral machining edge of the cathode 2 structure is adjusted to the shape of the peripheral machining surface of the workpiece 1 to be machined, and then fine-tuned according to the target structure model so that the cathode 2 obtains a structure that meets actual needs.

[0071] In one embodiment of the present invention, the cathode material is determined according to the material of the workpiece to be processed; wherein the workpiece to be processed may be a metal material that can be processed by electro-corrosion, such as stainless steel, copper, aluminum or nickel.

[0072] It should be noted that the cathode material needs to be determined according to the workpiece to be processed, and the activity of the cathode material needs to be higher than that of the workpiece to be processed.

[0073] In one embodiment of the present invention, the electrolyte composition is determined based on the workpiece material to be processed and the cathode material; wherein the electrolyte can be sodium chloride, potassium chloride, sodium bicarbonate, sodium carbonate, dilute sulfuric acid or dilute hydrochloric acid, etc.

[0074] It should be noted that the to-be-processed phase of the to-be-processed workpiece, the cathode and the electrolyte need to form a closed loop, and electrons flow from the to-be-processed workpiece to the cathode.

[0075] In one embodiment of the present invention, the workpiece to be processed after electrolytic shaping is cleaned of residual electrolyte. After electrolytic shaping, the workpiece is cleaned using a specific solution according to the material of the workpiece, and after cleaning, the workpiece needs to be dried to prevent corrosion and insufficient workpiece precision.

[0076] In one embodiment of the present invention, the workpiece to be processed is fixed to ensure that the position of the workpiece to be processed does not change during the processing, and the cathode shaking device controls the shaking of the cathode tool through two piezoelectric ceramic driven flexible hinge structures.

[0077] It should be noted that the unchanged position of the workpiece to be processed can ensure that the cathode shaking device performs periodic processing on the expected processing phase during the processing. The piezoelectric ceramic has the characteristics of high reliability, high resolution, high rigidity, and high output, and is an ideal driving element for precision motion and positioning. The flexible hinge mechanical structure has the characteristics of smooth motion, no friction, no backlash, and high precision. It is suitable for forming a high-resolution, high-frequency response precision motion and positioning system with piezoelectric ceramics. At the same time, the flexible hinge mechanism can also provide appropriate pre-tightening to prevent the piezoelectric ceramics from being subjected to tension and improve the service life of the system.

[0078] As for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0079] Reference Figure 2 , showing a cathode shaking and phase-divided power supply scanning type tooth profile modification device provided by an embodiment of the present application, the device involves calling the cathode shaking device to perform electrolytic modification on the workpiece to be processed;

[0080] Specifically include:

[0081] An acquisition module 210 is used to acquire a target structure model of a workpiece to be processed;

[0082] A shaking generation module 220, for determining the shaking frequency and shaking amplitude of the cathode tool of the cathode shaking device during electrolytic shaping according to the target structure model;

[0083] A shaking processing module 230 is used to shake the cathode according to the shaking frequency and shaking amplitude, so that the gap between the cathode tool and the workpiece to be processed changes periodically, and to power the phase where the gap is smaller than a preset value;

[0084] The generation module 240 is used to stop the processing and obtain a target structure workpiece when the gap between the cathode tool and the shaken workpiece to be processed is greater than or equal to a preset value.

[0085] In one embodiment of the present invention, the shaking generation module 220 includes:

[0086] A stratification submodule, used for stratifying the target structure model according to the cathode tool thickness to obtain a plurality of layers of target structure models;

[0087] The shaking state determination submodule is used to determine the shaking frequency and shaking amplitude of the cathode tool when it is at the position of the layer target structure model according to the layer target structure model.

[0088] In one embodiment of the present invention, the shaking processing module 230 includes:

[0089] A shaking module, used for shaking the cathode tool according to the shaking frequency and shaking amplitude;

[0090] An electrolytic machining module, used for electrolytic machining the workpiece to be machined by using the pulse power supply in a phase-by-phase manner;

[0091] The scanning processing module is used to perform electrolytic processing on the workpiece to be processed by using the pulse power supply in a phase-divided power supply manner.

[0092] In one embodiment of the present invention, it also includes:

[0093] The cathode structure determination module is used to determine the structure of the cathode tool according to the structure of the workpiece to be processed and the target structure model.

[0094] In one embodiment of the present invention, it also includes:

[0095] A cathode material determination module, used to determine the cathode tool material according to the material of the workpiece to be processed;

[0096] In one embodiment of the present invention, it also includes:

[0097] The electrolyte determination module is used to determine the electrolyte composition according to the workpiece material to be processed and the cathode tool material.

[0098] In one embodiment of the present invention, it also includes:

[0099] The cleaning submodule is used to clean the residual electrolyte from the workpiece to be processed after electrolytic shaping.

[0100] In one embodiment of the present invention, it also includes:

[0101] The fixing submodule is used to fix the workpiece to be processed to ensure that the position of the workpiece to be processed does not change during the processing; the cathode shaking device controls the cathode tool to shake through two piezoelectric ceramics to drive the flexible hinge structure

[0102] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present application.

[0103] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0104] The above is a detailed introduction to the cathode shaking and phase-powered scanning tooth shaping method and device provided by the present application. This article uses specific examples to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for general technical personnel in this field, based on the ideas of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A cathode shaking and phase-divided power supply scanning tooth profile modification method, the method involves calling a cathode shaking device to perform electrolytic modification on a workpiece to be processed, characterized in that: The method comprises the steps of: obtaining a target structural model of a workpiece to be processed; Determining the shaking frequency and shaking amplitude of the cathode tool of the cathode shaking device during electrolytic shaping according to the target structure model; The cathode is shaken according to the shaking frequency and the shaking amplitude, so that the gap between the cathode tool and the workpiece to be processed changes periodically, and the phase where the gap is smaller than a preset value is powered for processing; During electrolytic machining, power is supplied by a pulse power supply, and the pulse power supply supplies power only in the phase when the gap between the cathode tool and the workpiece to be machined is less than a preset value, and the pulse current changes periodically with the gap; specifically, the cathode tool is shaken according to the shaking frequency and the shaking amplitude; the workpiece to be machined is electrolytically machined by the pulse power supply in a phase-divided power supply manner; the workpiece to be machined is scanned from the bottom layer to the top layer according to the shaking frequency and the shaking amplitude; When the gaps between the cathode tool and the shaken workpiece to be processed are greater than or equal to a preset value, processing is stopped to obtain a workpiece with a target structure.

2. The cathode shaking and phase-divided power supply scanning type tooth profile modification method according to claim 1, characterized in that: The step of determining the shaking frequency and shaking amplitude of the cathode tool of the cathode shaking device during electrolytic shaping according to the target structure model comprises: The target structure model is layered according to the cathode tool thickness to obtain a plurality of layers of target structure models; The shaking frequency and shaking amplitude of the cathode tool at the position of the layer target structure model are determined according to the layer target structure model.

3. The cathode shaking and phase-divided power supply scanning type tooth profile modification method according to claim 1, characterized in that: Also includes the steps: The structure of the cathode tool is determined according to the structure of the workpiece to be processed and the target structure model.

4. The cathode shaking and phase-divided power supply scanning type tooth profile modification method according to claim 1, characterized in that: Also includes the steps: The cathode tool material is determined according to the material of the workpiece to be processed.

5. The cathode shaking and phase-divided power supply scanning type tooth profile modification method according to claim 4, characterized in that: Also includes the steps: The electrolyte composition is determined according to the workpiece material to be processed and the cathode tool material.

6. The cathode shaking and phase-divided power supply scanning type tooth profile modification method according to claim 1, characterized in that: Also includes the steps: The residual electrolyte is cleaned from the workpiece to be processed after electrolytic shaping.

7. The cathode shaking and phase-divided power supply scanning type tooth profile modification method according to claim 1, characterized in that: Also includes the steps: Fixing the workpiece to be processed to ensure that the position of the workpiece to be processed does not change during the processing; The cathode shaking device controls the shaking of the cathode tool through two piezoelectric ceramic driven flexible hinge structures.

8. A cathode shaking and phase-divided power supply scanning type tooth profile modification device, the device involves using the cathode shaking device to perform electrolytic modification on the workpiece to be processed, characterized in that: include: An acquisition module, used for acquiring a target structural model of a workpiece to be processed; A shaking generation module, used to determine the shaking frequency and shaking amplitude of the cathode tool of the cathode shaking device during electrolytic shaping according to the target structure model; A shaking processing module, used to shake the cathode according to the shaking frequency and shaking amplitude, so that the gap between the cathode tool and the workpiece to be processed changes periodically, and to power the phase where the gap is smaller than a preset value; During electrolytic machining, power is supplied by a pulse power supply, and the pulse power supply supplies power only in the phase when the gap between the cathode tool and the workpiece to be machined is less than a preset value, and the pulse current changes periodically with the gap; specifically, the cathode tool is shaken according to the shaking frequency and the shaking amplitude; the workpiece to be machined is electrolytically machined by the pulse power supply in a phase-divided power supply manner; the workpiece to be machined is scanned from the bottom layer to the top layer according to the shaking frequency and the shaking amplitude; A generating module is used to stop processing and obtain a target structure workpiece when the gap between the cathode tool and the shaking workpiece to be processed is greater than or equal to a preset value.

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