Ultrasonic transducer structure, apparatus and method for transverse vibration assisted electrochemical machining

Abstract

The application provides an ultrasonic vibrator structure, equipment and method for transverse vibration assisted electrolytic machining, relates to the field of ultrasonic electrolysis, and comprises a variable amplitude rod, a first end of which is formed with a stepped center column; electrodes and piezoelectric ceramics, which are alternately sleeved on the center column; a rear cover plate, which press-bonds the electrodes and the piezoelectric ceramics on the shoulder of the center column; and a tool electrode, which is arranged at the second end of the variable amplitude rod, the length direction of the tool electrode is the same as the radial direction of the variable amplitude rod, and the longitudinal length of the tool electrode is at least ten times of the radius of the tool electrode. The longitudinal vibration of the variable amplitude rod is converted into the transverse vibration of the tool electrode, the transverse vibration of the tool electrode can be utilized in electrolytic machining to promote the renewal of electrolyte and the discharge of electrolytic products, and the machining efficiency of high aspect ratio microstructures is improved.

Description

Technical Field

[0001] This invention relates to the field of ultrasonic electrolysis, and in particular to an ultrasonic transducer structure, equipment and method for transverse vibration-assisted electrolysis processing. Background Technology

[0002] In fields such as medical and aerospace, it is often necessary to machine microstructures with high aspect ratios, such as deep and narrow grooves, onto parts to meet different performance requirements. Various machining methods exist, including milling, forming, electrical discharge machining (EDM), and electrolytic machining. Among these, electrolytic machining is commonly used for high aspect ratio microstructures. Electrolytic processes offer many advantages, such as no heat-affected zone after machining, theoretically no cathode wear, and good workpiece surface quality. However, as the aspect ratio and feed distance increase, chip removal difficulties can easily arise, ultimately leading to machining failure.

[0003] Electrolytic machining presents numerous problems. The fundamental issue lies in the difficulty of chip removal. Existing solutions to this problem include low-frequency vibration, axial fluid flushing, and ultrasonic assistance. Ultrasonic assistance, in particular, is widely used in many electrolysis-related processes because it effectively removes the passivation layer and promotes electrolyte circulation and product removal. However, each application method has its own drawbacks. Low-frequency vibration and axial fluid flushing, on the other hand, require relatively complex structures to implement.

[0004] Ultrasonic-assisted methods can be categorized based on the application method: longitudinal ultrasound, ultrasonic stirring, radial ultrasound, and focused ultrasound. Longitudinal ultrasound is advantageous due to its simplicity, single vibration mode, and ease of integration with other electrolytic processes. Its disadvantage lies in the dimensional requirements of the tool or workpiece, which needs to be mounted on the output of the transducer. Ultrasonic stirring is also simple to use and relatively easy to integrate with other electrolytic processes. However, it directly impacts the entire processing environment, requires higher power, and may have significant adverse effects under excessive power conditions. The latter two ultrasonic application methods have fewer applications.

[0005] Therefore, this application provides an ultrasonic transducer structure, device and method for transverse vibration-assisted electrolytic machining, which optimizes the electrolytic machining effect, promotes electrolyte renewal and discharge of electrolytic products. Summary of the Invention

[0006] This invention provides an ultrasonic transducer structure, equipment, and method for transverse vibration-assisted electrolytic machining, the purpose of which is to solve the problem of poor chip removal effect of high aspect ratio microstructures during electrolysis.

[0007] To achieve the above objectives, embodiments of the present invention provide an ultrasonic transducer structure employing transverse vibration-assisted electrolytic processing, comprising:

[0008] The amplitude rod has a stepped central column at its first end;

[0009] Electrode sheets and piezoelectric ceramics are alternately sleeved on the central column;

[0010] The rear cover plate presses the electrode sheet and piezoelectric ceramic onto the shoulder of the central column;

[0011] A tool electrode is disposed at the second end of the amplitude transformer. The length direction of the tool electrode is the same as the radial direction of the amplitude transformer, and the longitudinal length of the tool electrode is at least ten times the radius of the tool electrode.

[0012] Preferably, the tool electrode is rod-shaped, sheet-shaped, or bamboo-shaped.

[0013] This application also provides an ultrasonic transducer device for auxiliary electrolytic machining, employing the aforementioned ultrasonic transducer structure, and further comprising:

[0014] Optical platform;

[0015] A machining motion platform is mounted on the optical platform. The machining motion platform includes a Z-axis moving unit and an XY-plane moving unit. The ultrasonic transducer structure is mounted on the Z-axis moving unit and is driven by the Z-axis moving unit to move in the Z-axis direction. The length direction of the tool electrode is parallel to the Z-axis. The XY-plane moving unit is equipped with a workpiece clamp for mounting the workpiece, and the XY-plane moving unit drives the workpiece clamp to move in the XY-plane.

[0016] An electrolyte tank is disposed between the XY plane moving unit and the Z-axis moving unit, and the electrolyte tank is used to hold electrolyte.

[0017] Preferably, the ultrasonic transducer structure is further connected to a cantilever frame, the ultrasonic transducer structure is horizontally mounted on the cantilever frame, the cantilever frame is connected to the Z-axis moving unit, and the Z-axis moving unit drives the cantilever frame to move.

[0018] Preferably, the cantilever frame is further provided with a rotating unit, the rotation center of the rotating unit is parallel to the Z-axis, the ultrasonic transducer structure is disposed on the rotating unit, and the tool electrode is collinear with the rotation center of the rotating unit.

[0019] Preferably, the rotating unit includes a rotary motor, a disk, and a fixed frame. The rotary motor is mounted on the cantilever frame, and the output end of the rotary motor passes through the cantilever frame. The disk is connected to the output end of the rotary motor below the cantilever frame. The ultrasonic transducer structure is fixedly connected to the disk through the fixed frame, and the tool electrode is collinear with the output end of the rotary motor.

[0020] Preferably, the ultrasonic transducer device for auxiliary electrolytic machining further includes an ultrasonic power supply and an electrochemical power supply. The ultrasonic power supply is electrically connected to the ultrasonic transducer structure to enable the ultrasonic transducer structure to output longitudinal vibration. The positive and negative terminals of the electrochemical power supply are electrically connected to the workpiece and the tool electrode, respectively.

[0021] This application also provides a method for assisting electrolytic machining, employing the aforementioned ultrasonic transducer device, comprising the following steps:

[0022] S10. Assemble the ultrasonic transducer device and clamp the workpiece, add electrolyte to the electrolyte tank, and immerse the workpiece in the electrolyte;

[0023] S20. Adjust the Z-axis movement unit so that the tool electrode coincides with the workpiece in the Z-axis direction;

[0024] S30. Adjust the frequency of the ultrasonic power supply to match the resonant frequency of the ultrasonic transducer structure;

[0025] S40. Turn on the ultrasonic power supply and electrochemical power supply to make the ultrasonic transducer structure generate longitudinal vibration, control the workpiece to enter the processing range of the ultrasonic transducer structure in the X direction and perform processing.

[0026] S50. After processing is completed, turn off the electrochemical power supply and ultrasonic power supply in sequence, and control the workpiece to leave the processing range.

[0027] Preferably, there are three modes for adjusting the ultrasonic power supply frequency in step S30: single-mode mode, dual-frequency mode, and multiple-mode mode.

[0028] In a single-mode operation, the frequency of the ultrasonic power supply is individually matched with the resonant frequencies of each ultrasonic transverse structure. A resonant frequency is selected to output longitudinal vibration, which is transmitted to the tool electrode to generate the corresponding transverse vibration mode, thus realizing single transverse vibration mode processing.

[0029] In the dual-frequency modal mode, the frequency of the ultrasonic power supply is matched with the resonant frequency of the ultrasonic transducer structure. The two resonant frequencies output two longitudinal vibrations that are transmitted to the tool electrode to generate two transverse vibration modes. The processing time through the two resonant frequencies is controlled, and the two transverse vibration modes are switched to achieve dual-frequency modal processing.

[0030] In multiple modal modes, the frequency of the ultrasonic power supply is matched with all the resonant frequencies of the ultrasonic transducer structure. Multiple resonant frequencies output multiple longitudinal vibrations that are transmitted to the tool electrode to generate multiple transverse vibration modes. By controlling the processing time of multiple resonant frequencies, switching between multiple transverse vibration modes is achieved, realizing multi-frequency modal composite processing.

[0031] Preferably, step S40 further includes turning on a rotary motor, which drives the ultrasonic transducer structure to rotate at a preset angular velocity.

[0032] The above-described solution of the present invention has the following beneficial effects:

[0033] This application achieves the conversion of the longitudinal vibration of the amplitude transformer into the transverse vibration of the tool electrode by placing the tool electrode at the second end of the amplitude transformer and keeping the tool electrode perpendicular to the length direction of the amplitude transformer. In electrolytic machining, the transverse vibration of the tool electrode can be used to promote the renewal of electrolyte and the discharge of electrolytic products, which is beneficial to improving the machining efficiency of high aspect ratio microstructures.

[0034] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of an ultrasonic transducer structure.

[0036] Figure 2 These are tool electrodes of different shapes and their corresponding vibration modes;

[0037] Figure 3 This is a schematic diagram of an ultrasonic transducer device;

[0038] Figure 4 This is a schematic diagram of the tool electrode and bubbles in conventional electrolysis.

[0039] Figure 5 This is a schematic diagram of the tool electrode and the bubble to which transverse vibration is applied;

[0040] Figure 6 These are the vibration modes of the tool electrode at different output frequencies;

[0041] Figure 7 This is a schematic diagram of another type of ultrasonic transducer device.

[0042] [Explanation of Labels in the Attached Image]

[0043] 1-Amplitude transducer, 2-Electrode plate, 3-Piezoelectric ceramic, 4-Rear cover plate, 5-Tool electrode, 6-Flange

[0044] 11-Optical platform, 12-Z-axis moving unit, 13-XY-plane moving unit, 14-Workpiece fixture, 15-Electrolyte tank, 16-Cantilever frame, 17-Rotary motor, 18-Ultrasonic power supply, 19-Electrochemical power supply

[0045] A - Ultrasonic transducer structure, B - Workpiece. Detailed Implementation

[0046] To make the technical problems, technical solutions and advantages of the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0047] like Figure 1 As shown, an embodiment of the present invention provides an ultrasonic transducer structure employing transverse vibration-assisted electrolytic machining. The structure includes an amplitude transformer 1, electrode plates 2, piezoelectric ceramics 3, a rear cover plate 4, and a tool electrode 5. The amplitude transformer 1 is divided into a first end and a second end. The first end has a stepped central column, which is divided into a small-diameter section and a large-diameter section, with a shoulder formed at the connection between the two sections. The aforementioned electrode plates 2 and piezoelectric ceramics 3 are fitted onto the small-diameter end, alternating between the electrode plates 2 and piezoelectric ceramics 3. An external thread is provided at the end of the small-diameter end furthest from the large-diameter section. The rear cover plate 4 is screwed into the external thread to press the electrode plates 2 and piezoelectric ceramics 3 firmly onto the shoulder, restricting their radial freedom on the amplitude transformer 1. The aforementioned tool electrode 5 is disposed at the second end of the amplitude transformer 1. A screw is provided at the second end of the amplitude transformer 1, and the tool electrode 5 is fixed to the second end of the amplitude transformer 1 by the screw, maintaining the length direction of the tool electrode 5 perpendicular to the axial direction of the amplitude transformer 1. The longitudinal length of the tool electrode 5 is at least ten times the radius of the tool electrode 5 in order to convert the longitudinal vibration output by the amplitude transformer 1 into a transverse vibration perpendicular to the radial direction of the tool electrode 5.

[0048] like Figure 2 As shown, the tool electrode 5 can be rod-shaped, sheet-shaped, or bamboo-shaped. From left to right, the first group shows the rod-shaped tool electrode 5 and its corresponding vibration mode; the second group shows the sheet-shaped tool electrode 5 and its corresponding vibration mode, and the schematic diagram in the middle of the second group is a front view of the tool electrode 5. The third group shows the bamboo-shaped tool electrode 5 and its corresponding vibration mode.

[0049] It should be noted that the radius of the tool electrode 5 is a broad concept, which can be understood as its width and / or height. That is, the longitudinal length of the tool electrode 5 is more than 10 times its width and / or height. Specifically, in this application, when the tool electrode 5 is rod-shaped, its length is more than 10 times its diameter; when the tool electrode 5 is sheet-shaped, its length is more than 10 times its width and height; when the tool electrode is bamboo-shaped, its length is more than 10 times the diameter of the bamboo segment (the thicker part of the bamboo segment).

[0050] Preferably, a flange 6 is also provided in the middle of the amplitude transformer 1. The flange 6 is sleeved and fixed on the amplitude transformer 1, which facilitates the fixing of the ultrasonic transducer structure to other equipment.

[0051] In the ultrasonic transducer structure provided in this application, the ultrasonic generator transmits a high-frequency alternating current signal to the piezoelectric ceramic 3. Utilizing the inverse piezoelectric effect, the piezoelectric ceramic 3 generates longitudinal ultrasonic vibration (vibration along the axis of the amplitude transformer 1), and the amplitude of the vibration is amplified by the amplitude transformer 1. The tool electrode 5 is perpendicular to the amplitude transformer 1, converting the longitudinal vibration output by the amplitude transformer 1 into the transverse vibration of the tool electrode 5, thereby obtaining the transverse vibration perpendicular to the axis of the tool electrode 5.

[0052] like Figure 3 This application also provides an ultrasonic transducer device for auxiliary electrolytic machining, utilizing the aforementioned ultrasonic transducer structure A, and further including an optical platform 11, a machining motion platform, and an electrolyte tank 15. The optical platform 11 serves as the base of the ultrasonic transducer device, and the machining motion platform is mounted on the optical platform 11. The machining motion platform includes a Z-axis moving unit 12 and an XY-plane moving unit 13. The Z-axis moving unit 12 is fixed to one side of the optical platform 11, and the ultrasonic transducer structure A is mounted on the Z-axis moving unit 12. Driven by the Z-axis moving unit 12, the ultrasonic transducer structure A can move up and down along the Z-axis. When the ultrasonic transducer structure A is mounted on the Z-axis moving unit 12, it is necessary to ensure that the length direction of the tool electrode 5 is parallel to the Z-axis.

[0053] Preferably, the ultrasonic transducer structure A is also connected to a cantilever frame 16. The ultrasonic transducer structure A is horizontally mounted on the cantilever frame 16. The cantilever frame 16 is connected to the Z-axis moving unit 12. The Z-axis moving unit 12 moves the ultrasonic transducer structure A through the cantilever frame 16.

[0054] The aforementioned XY plane moving unit 13 is disposed on the other side of the optical platform 11. A workpiece clamp 14 is disposed on the XY plane moving unit 13, which is used to mount workpiece B. The XY plane moving unit 13 drives the workpiece clamp 14 to move in the XY plane.

[0055] The aforementioned electrolyte tank 15 is located between the Z-axis moving unit 12 and the XY-plane moving unit 13. This electrolyte tank is used to hold electrolyte, and the tool electrode 5 and the workpiece B are immersed in the electrolyte.

[0056] Preferably, the workpiece fixture 14 is a C-type fixture with locking bolts. The workpiece B is placed at the opening of the C-type fixture and is secured to the C-type fixture by the locking bolts.

[0057] The ultrasonic transducer device for auxiliary electrolytic machining also includes an ultrasonic power supply 18 and an electrochemical power supply 19. The ultrasonic power supply 18 is electrically connected to the ultrasonic transducer structure A, causing the ultrasonic transducer structure A to output longitudinal vibration. The positive and negative terminals of the electrochemical power supply 19 are electrically connected to the workpiece B and the tool electrode 5, respectively. In this embodiment, the electrochemical power supply 19 is electrically connected to the locking bolt, and the indirect electrical connection with the workpiece B is achieved through the conductivity of the locking bolt. Both the tool electrode 5 and the workpiece B are immersed in the electrolyte, forming a circuit through the electrolyte.

[0058] like Figure 4As shown, in conventional electrochemical machining, the tool electrode 5 is fixed by the electrode holder and is in a static state. Bubbles will be uniformly attached to the surface of the tool electrode 5. These bubbles interfere with the renewal of the electrolyte around the tool electrode 5, resulting in low electrolysis efficiency and reduced electrolyte fluidity, making it difficult for waste to be discharged with the electrolyte flow.

[0059] like Figure 5 The ultrasonic transducer structure A provided in this application generates transverse vibration along the axial direction of the tool electrode 5, which is perpendicular to the plane where the workpiece B's machining interface is located. Based on the amplitude of the vibration along the axis of the tool electrode 5, the smaller amplitude regions are identified as nodal regions, and the larger amplitude regions as antinode regions. When the tool electrode 5 is stationary, bubbles are uniformly attached to its surface. After the tool electrode 5 undergoes transverse vibration, the bubbles in the antinode regions are more easily dispersed, forming an inverted triangular distribution; the bubbles in the nodal regions are difficult to disperse and remain attached to the surface of the tool electrode 5. Therefore, an unevenly distributed bubble layer (dispersed bubble layer and attached bubble layer) is formed on the surface of the tool electrode 5 due to the transverse vibration. As the dispersed bubble layer is dispersed, the electrolyte in this region exchanges with the electrode liquid outside the region, renewing the electrolyte around the tool electrode 5 and simultaneously driving electrolyte flow, carrying away debris from the high aspect ratio microstructure.

[0060] Furthermore, since the tool electrode 5 is connected to the ultrasonic transducer structure A, the ultrasonic transducer structure A can generate different resonant frequencies, causing the antinodes and nodes on the axis of the tool electrode 5 to be located in different regions, such as... Figure 6 As shown, from left to right, the conditions are: no ultrasound applied, ultrasound applied at the first frequency, the second frequency, and the third frequency, respectively. The second frequency is greater than the first frequency but less than the third frequency. It can be seen that as the resonant frequency increases, the distance between nodes and antinodes decreases. Combined with the aforementioned fact that bubbles in the antinode region are easily dispersed, the longitudinal spacing between the attached bubble layers can be controlled, thereby controlling the distribution of the bubble layers.

[0061] The transverse vibration output from tool electrode 5 acts on the electrolyte between workpiece B and tool, which can renew the electrolyte in this area by dispersing the bubble layer. At the same time, it can also promote the discharge of electrolytic waste and products, solving the problem of chip removal difficulty in electrolytic machining of microstructures with high aspect ratio, and is conducive to improving the machining efficiency of microstructures with high aspect ratio.

[0062] Furthermore, compared to existing methods for promoting chip removal, this application can also adjust the bubble layer distribution of the tool electrode 5 by changing the frequency, thereby adjusting the nodal and antidote regions of the tool electrode 5, thus affecting the dissolution rate at different locations on the workpiece B, thereby controlling the cross-section of the high aspect ratio microstructure.

[0063] like Figure 7 In some embodiments of this application, a rotating unit is also provided on the cantilever 16. The rotation center of the rotating unit is parallel to the Z-axis. The ultrasonic transducer structure A is provided on the rotating unit, and the length direction of the tool electrode 5 is collinear with the rotation center of the rotating unit.

[0064] Specifically, the rotating unit includes a rotary motor 17, which is mounted upside down on a cantilever frame 16. The output end of the rotary motor 17 passes through the cantilever frame 16, and a disk is connected below the cantilever frame 16. The rotary motor 17 drives the disk to perform circular motion. A fixed frame is also provided on the disk, and the ultrasonic transducer structure A rotates synchronously with the disk through the fixed frame. When installing the ultrasonic transducer structure A, it is necessary to ensure that the length direction of the tool electrode 5 is collinear with the output end of the rotary motor 17.

[0065] In this embodiment, the ultrasonic transducer structure A can output transverse vibration in the plane perpendicular to the axis of the tool electrode 5 (i.e., the machining feed direction is in the plane), dispersing machining debris and promoting electrolyte renewal. Therefore, when the rotating unit drives the ultrasonic transducer structure A to rotate, the tool electrode 5 generates transverse vibration in all directions, promoting the discharge of machining debris and the renewal of electrolyte, and achieving arbitrary trajectory feed through the XY plane moving unit 13.

[0066] This application also provides a method for assisting electrolytic machining, employing the aforementioned ultrasonic transducer device, comprising the following steps:

[0067] S10. Assemble the ultrasonic transducer device and clamp the workpiece B. Add electrolyte to the electrolyte tank 15 and adjust the Z-axis moving unit 12 and the XY plane moving unit 13 so that the workpiece B is completely immersed in the electrolyte and the bottom of the tool electrode 5 is immersed in the electrolyte.

[0068] S20. Further adjust the Z-axis moving unit 12 so that the tool electrode 5 coincides with the workpiece B in the Z-axis direction. Preferably, the height of the tool electrode 5 is greater than the height of the workpiece B.

[0069] S30. Adjust the frequency of the ultrasonic power supply 18 to match the resonant frequency of the ultrasonic transducer structure A.

[0070] In this step, the ultrasonic power supply 18 has three frequency adjustment modes: single-mode mode, dual-mode mode, and multiple-mode mode. In the single-mode mode, the frequency of the ultrasonic power supply 18 is individually matched with each resonance of the ultrasonic transverse structure A, and a selected resonance frequency is output to transmit longitudinal vibration to the tool electrode 5 to generate the corresponding transverse vibration mode, thereby realizing the processing of a single transverse vibration mode.

[0071] In the dual-frequency modal mode, the frequency of the ultrasonic power supply 18 is matched with the resonant frequency of the ultrasonic transducer structure A. The two resonant frequencies output two longitudinal vibrations that are transmitted to the tool electrode 5 to generate two transverse vibration modes. The processing time of the two resonant frequencies is controlled to switch between the two transverse vibration modes, thereby realizing dual-frequency modal processing.

[0072] In multiple modal modes, the frequency of the ultrasonic power supply 18 matches all the resonant frequencies of the ultrasonic transducer structure A. Multiple resonant frequencies output multiple longitudinal vibrations that are transmitted to the tool electrode 5 to generate multiple transverse vibration modes. By controlling the processing time of multiple resonant frequencies, multiple transverse vibration modes can be switched to achieve multi-frequency modal composite processing.

[0073] S40. Turn on the ultrasonic power supply 18 and the electrochemical power supply 19 to make the ultrasonic transducer structure A generate longitudinal vibration, control the workpiece B to feed along the X-axis, and the workpiece B enters the processing range of the ultrasonic transducer structure A and is processed.

[0074] In this step, the rotary motor 17 can also be turned on, and the rotary motor 17 drives the ultrasonic transducer structure A to rotate at a preset angular velocity.

[0075] S50. After processing is completed, turn off the electrochemical power supply 19 and the ultrasonic power supply 18 in sequence to control the workpiece B to exit the processing range.

[0076] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An ultrasonic transducer apparatus for assisting electrolytic machining, characterized by An ultrasonic transducer structure for transverse vibration-assisted electrolytic machining is used to output transverse vibrations of different frequencies perpendicular to the machining surface, including: The amplitude rod (1) has a stepped central column at its first end; Electrode sheets (2) and piezoelectric ceramics (3) are alternately sleeved on the central column; The rear cover plate (4) presses the electrode sheet (2) and the piezoelectric ceramic (3) onto the shoulder of the central column; A tool electrode (5) is disposed at the second end of the amplitude transformer (1), and the length direction of the tool electrode (5) is the same as the radial direction of the amplitude transformer (1); The ultrasonic transducer device includes: Optical platform (11); A machining motion platform is set on the optical platform (11). The machining motion platform includes a Z-axis moving unit (12) and an XY plane moving unit (13). The ultrasonic transducer structure (A) is set on the Z-axis moving unit (12) and is driven by the Z-axis moving unit (12) to move in the Z-axis direction. The length direction of the tool electrode (5) is parallel to the Z-axis. The XY plane moving unit (13) is provided with a workpiece fixture (14) for mounting the workpiece (B). The XY plane moving unit (13) drives the workpiece fixture (14) to move in the XY plane. An electrolyte tank (15) is disposed between the XY plane moving unit (13) and the Z direction moving unit (12), and the electrolyte tank (15) is used to hold electrolyte; The ultrasonic transducer structure (A) is also connected to a cantilever (16). The ultrasonic transducer structure (A) is horizontally mounted on the cantilever (16). The cantilever (16) is connected to the Z-axis moving unit (12), and the Z-axis moving unit (12) drives the cantilever (16) to move. The cantilever (16) is also provided with a rotating unit, the rotation center of the rotating unit is parallel to the Z-axis, the ultrasonic transducer structure (A) is provided on the rotating unit, and the tool electrode (5) is collinear with the rotation center of the rotating unit; The rotating unit includes a rotary motor (17), a disk, and a fixed frame. The rotary motor (17) is mounted on the cantilever frame (16). The output end of the rotary motor (17) passes through the cantilever frame (16). The disk is connected to the output end of the rotary motor (17) below the cantilever frame (16). The ultrasonic transducer structure (A) is fixedly connected to the disk through the fixed frame. The tool electrode (5) is collinear with the output end of the rotary motor (17).

2. The ultrasonic horn apparatus for assisted electrochemical machining according to claim 1, characterized in that: The tool electrode (5) is rod-shaped, sheet-shaped, or bamboo-shaped, and the longitudinal length of the tool electrode (5) is at least ten times the radius of the tool electrode (5).

3. Ultrasonic horn device for assisting electrochemical machining according to any of claims 1 or 2, characterized in that: The ultrasonic transducer device for auxiliary electrolytic machining also includes an ultrasonic power supply (18) and an electrochemical power supply (19). The ultrasonic power supply (18) is electrically connected to the ultrasonic transducer structure (A) so that the ultrasonic transducer structure (A) outputs longitudinal vibration. The positive and negative terminals of the electrochemical power supply (19) are electrically connected to the workpiece (B) and the tool electrode (5), respectively.

4. A method for assisting electrolytic machining using the ultrasonic transducer device according to claim 3, characterized by, Includes the following steps: S10. Assemble the ultrasonic transducer device and clamp the workpiece (B). Add electrolyte to the electrolyte tank (15) and immerse the workpiece (B) in the electrolyte. S20. Adjust the Z-axis moving unit (12) so that the tool electrode (5) coincides with the workpiece (B) in the Z-axis direction; S30. Adjust the frequency of the ultrasonic power supply (18) to match the resonant frequency of the ultrasonic transducer structure (A); S40. Turn on the ultrasonic power supply (18) and electrochemical power supply (19) to make the ultrasonic transducer structure (A) generate longitudinal vibration, and control the workpiece (B) to enter the processing range of the ultrasonic transducer structure (A) in the X direction and perform processing; S50. After processing is completed, turn off the electrochemical power supply (19) and ultrasonic power supply (18) in sequence, and control the workpiece (B) to leave the processing range.

5. A method for assisted electrochemical machining according to claim 4, characterized in that: In step S30, there are three modes for adjusting the frequency of the ultrasonic power supply (18): single-mode mode, dual-frequency mode, and multiple-mode mode. In a single-mode process, the frequency of the ultrasonic power supply (18) is individually matched with each resonant frequency of the ultrasonic transducer structure (A), and a resonant frequency is selected to output longitudinal vibration and transmit it to the tool electrode (5) to generate the corresponding transverse vibration mode, thereby realizing single transverse vibration mode processing. In the dual-frequency modal mode, the frequency of the ultrasonic power supply (18) is matched with the resonant frequency of the ultrasonic transducer structure (A) in pairs. The two resonant frequencies output two longitudinal vibrations that are transmitted to the tool electrode (5) to generate two transverse vibration modes. The processing time through the two resonant frequencies is controlled, and the two transverse vibration modes are switched to realize dual-frequency modal processing. In multiple modal modes, the frequency of the ultrasonic power supply (18) matches all the resonant frequencies of the ultrasonic transducer structure (A). Multiple resonant frequencies output multiple longitudinal vibrations that are transmitted to the tool electrode (5) to generate multiple transverse vibration modes. By controlling the processing time of multiple resonant frequencies, multiple transverse vibration modes can be switched to achieve multi-frequency modal composite processing.

6. A method for assisted electrochemical machining according to claim 4, characterized in that: Step S40 also includes turning on the rotary motor (17), which drives the ultrasonic transducer structure (A) to rotate at a preset angular velocity.

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