An ultrasonic-assisted electrolytic grinding device and method for array grinding head electrodes applied to complex curved surfaces

Abstract

The present invention relates to an array grinding head electrode ultrasonic assisted electrolytic grinding device applied to complex curved surfaces, comprising an air pressure feedback regulation system, a machine tool transmission system, and an ultrasonic array grinding head tool electrode connected to the machine tool transmission system; an electrolyte circulation system is installed on the machine tool transmission system, a clamp is arranged on the electrolyte circulation system, and the clamp is fixedly connected to a workpiece to be processed by screws; the present invention realizes electrolytic grinding of workpieces with complex curved surfaces; ultrasonic energy field assisted processing promotes the discharge of electrolytic products, accelerates the circulation of electrolyte, improves the electric field distribution in the electrolysis area, and improves processing accuracy; thus, array grinding head electrode ultrasonic assisted electrolytic grinding can realize high-precision and high-efficiency complex curved surface finishing processing.

Description

Technical Field

[0001] The invention relates to the technical field of ultrasonic assisted electrolytic grinding, in particular to an array grinding head electrode ultrasonic assisted electrolytic grinding device and method for complex curved surfaces. Background Art

[0002] With the rapid development of aerospace, automobile, electronics, mold and other industrial fields, the demand for parts with complex surface structures and high surface quality requirements is increasing, such as aircraft engine blades, mold workpieces with complex three-dimensional curved surfaces, etc. For such complex curved surfaces, surface finishing and deburring are still faced with problems such as complex operation and low processing efficiency. Electrolytic machining is to remove the ion layer of the material through electrochemical reaction between the cathode and anode. The processing process is not affected by the hardness and strength of the processed material. It is suitable for the processing of difficult-to-process metals, and there is no tool loss. It will not produce thermal stress and microcracks and burrs that may be caused by mechanical stress. The surface of the machined surface is smooth, but a passivation layer is easy to form on the surface of the workpiece. When mechanically grinding difficult-to-process metals, the abrasive particles are easy to wear and fall off, the grinding ratio is reduced, the work hardening is serious, and the surface of the workpiece is easily damaged by grinding heat, resulting in local burns or microcracks.

[0003] In view of the above technical problems, improvements need to be made. Summary of the invention

[0004] In order to overcome the problems of high difficulty, low efficiency and low precision in finishing of complex curved surfaces of difficult-to-process materials, the present invention provides a composite processing method and device of array grinding head electrode air pressure feedback ultrasonic assisted electrolytic grinding, which combines electrolytic processing, mechanical grinding and ultrasonic assisted processing technologies, and uses array grinding head electrodes and air pressure feedback adjustment structure at the same time. It is mainly used for surface electrolytic grinding of complex curved surface workpieces of difficult-to-process materials, and can achieve high-precision and high-efficiency complex curved surface finishing.

[0005] In order to achieve the above objectives, the technical solution adopted by the present invention is: an array grinding head electrode ultrasonic assisted electrolytic grinding device applied to complex surfaces, including an air pressure feedback regulation system, a machine tool transmission system, and an ultrasonic array grinding head tool electrode connected to the machine tool transmission system; an electrolyte circulation system is installed on the machine tool transmission system, and a clamp is arranged on the electrolyte circulation system, and the clamp is fixedly connected to the workpiece to be processed by screws.

[0006] As a preferred solution of the present invention, the machine tool transmission system includes a machine tool bed, a Z-axis guide rail, an X-axis guide rail and a Y-axis guide rail mounted on the machine tool bed, wherein a high-speed turntable is mounted on the Z-axis guide rail; the ultrasonic array grinding head tool electrode is coaxially connected to the high-speed turntable by screws.

[0007] As a preferred embodiment of the present invention, the ultrasonic array grinding head tool electrode includes a gas quick-connect joint, a gasket, a rear end cover, a piezoelectric ceramic group, a front end cover and an amplitude transformer arranged in sequence from top to bottom; bolts are inserted through the gasket, the rear end cover, the piezoelectric ceramic group, the front end cover and the amplitude transformer, and the gas quick-connect joint is connected to the bolts of the pre-set threaded holes in the rear section through threads.

[0008] As a preferred embodiment of the present invention, the ultrasonic array grinding head tool electrode also includes a pressure sensor, a connector, a limit block, a spring fixing shell, a plurality of grinding head electrodes and a spring; a pressure sensor is arranged at the front end of the amplitude transformer; the amplitude transformer, the connector, and the spring fixing shell are assembled with the amplitude transformer in sequence through threads, the spring is sleeved on the grinding head electrode, and the end of the spring is against the limit block, and the limit block can bear the upward spring force of the spring while limiting the excessive upward movement of the grinding head electrode; the upper end of the gas quick connect joint is connected to the air compressor through a pressure regulating valve, and the lower end is connected to the bolt, so that the gas generated by the air compressor enters the front end of the amplitude transformer through the bolt through hole and the amplitude transformer through hole, the gas pushes the grinding head electrode downward, and acts together with the upward force exerted on the grinding head electrode by the spring, and the pressure regulating valve is adjusted by feedback information from the pressure sensor to realize the control of the grinding pressure during electrolytic grinding.

[0009] As a preferred solution of the present invention, a diamond abrasive coating is additionally provided at the front end of the grinding head electrode.

[0010] As a preferred solution of the present invention, the grinding head electrode array is installed at the front end of the amplitude transformer, wherein the number of the grinding head electrodes is 13, the diameter of the grinding head electrodes is 1 mm, and the total length is 30 mm.

[0011] As a preferred solution of the present invention, the air pressure feedback regulation system includes an air compressor, a pressure regulating valve and a pressure sensor, wherein the pressure sensor is installed at the front end of the ultrasonic amplitude transformer, and the pressure regulating valve is adjusted in real time according to the feedback information of the pressure sensor to control the grinding pressure.

[0012] As a preferred solution of the present invention, the workpiece to be processed is a conductive metal material, wherein the conductive metal material is iron or copper.

[0013] As a preferred embodiment of the present invention, the electrolyte circulation system includes an electrolyte tank, a reservoir inlet is formed at the bottom of the electrolyte tank, a pipeline is installed on the reservoir inlet, the pipeline is connected to the electrolyte reservoir, a reservoir outlet is formed at the top of the electrolyte reservoir, a pipeline is installed on the reservoir outlet, and a centrifugal pump, a filter and a digital pressure gauge are arranged on the pipeline in sequence; the centrifugal pump draws electrolyte from the reservoir outlet, and provides electrolyte for electrolytic processing through the filter and the digital pressure gauge. After processing, the electrolyte is collected by the electrolyte tank and refluxed to the electrolyte reservoir through the reservoir inlet.

[0014] An array grinding head electrode ultrasonic assisted electrolytic grinding method for complex curved surfaces comprises the following steps:

[0015] Step 1. Fix the workpiece to be processed on the fixture, immerse the workpiece to be processed and the fixture in the electrolyte of the electrolyte tank; fix the electrolyte tank on the machine tool bed, and connect the workpiece to be processed to the positive pole of the power supply;

[0016] Step 2. Assemble the grinding head electrode array at the front end of the ultrasonic horn to form an ultrasonic array grinding head tool electrode, connect the ultrasonic device of the ultrasonic array grinding head tool electrode to the ultrasonic power supply, connect the ultrasonic array grinding head tool electrode to the negative electrode of the power supply, and assemble the ultrasonic array grinding head tool electrode to the high-speed turntable of the machine tool transmission system;

[0017] Step 3. Move the grinding head electrode through the machine tool bed to the surface of the workpiece to be processed, connect the electrolytic machining power supply, ultrasonic power supply, and electrolyte circulation system, and drive the machine tool X-axis, Y-axis, and Z-axis. The grinding head electrode moves close to the surface of the workpiece, and the gas pressure regulating valve is adjusted through the feedback information of the pressure sensor to ensure that the machining gap and machining pressure are constant; the workpiece surface material is removed by the grinding action of the abrasive on the tool electrode surface and the electrolytic machining action.

[0018] The beneficial effects of the present invention are:

[0019] The present invention adopts an array grinding head electrode ultrasonic assisted electrolytic grinding method to perform electrolytic grinding on complex curved surfaces of difficult-to-process materials; by combining ultrasonic energy field assisted processing, electrolytic processing and mechanical grinding processing methods, and using an array grinding head electrode and an air pressure feedback adjustment structure at the same time, electrolytic grinding and finishing processing of complex curved surface workpiece profiles is achieved; the array grinding head electrode grinding processing removes electrolytic products attached to the surface of the workpiece and the passivation layer generated by the electrolytic processing, the grinding head electrode at the center of the ultrasonic array grinding head tool electrode rotates at high speed along the center of the circle, and the array grinding head electrode at the non-center of the circle rotates along the ultrasonic array grinding head tool The center of the electrode revolves to improve the material removal efficiency; electrolytic machining can remove burrs on the surface of difficult-to-machine materials, and there is no recast layer, microcracks, etc. on the surface of the workpiece after machining; the diamond abrasive grains at the front end of the grinding head electrode and the air pressure feedback adjustment structure can ensure the constant machining gap and pressure of the electrolytic grinding machining, and realize the electrolytic grinding of complex curved surface workpieces; ultrasonic energy field assisted machining promotes the discharge of electrolytic products, accelerates the circulation of electrolyte, improves the electric field distribution in the electrolytic area, and improves machining accuracy; thus, array grinding head electrode ultrasonic assisted electrolytic grinding can achieve high-precision and high-efficiency complex curved surface finishing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the array grinding head electrode ultrasonic assisted electrolytic grinding processing device of the present invention;

[0021] Figure 2is a schematic diagram of a machine tool transmission system of the present invention;

[0022] Figure 3 is a structural diagram of the ultrasonic array grinding head tool electrode of the present invention;

[0023] Figure 4 It is a partial structural diagram of the ultrasonic array grinding head tool electrode of the present invention;

[0024] Figure 5 is an axonometric view of the front end of the grinding head electrode of the present invention;

[0025] Figure 6 is a bottom view of the array grinding head tool electrode of the present invention;

[0026] Figure 7 is a schematic diagram of an electrolyte circulation system of the present invention;

[0027] 1-3, machine tool bed 1-4, high-speed turntable 1-5, gas quick-connect joint 2-1, rear end cover 2-2, piezoelectric ceramic group 2-3, front end cover 2-4, amplitude rod 2-5, amplitude rod through hole 2-6, ultrasonic Acoustic power supply 2-7, bolt through hole 2-8, bolt 2-9, washer 2-10, pressure sensor 2-11, connector 2-12, grinding head electric limit block 2-13, spring fixing shell 2-14, grinding head electrode 2-15, spring 2-16, diamond abrasive coating 2-17, electrolyte storage tank 5-1, storage tank outlet 5-2, centrifugal pump 5-3, filter 5-4, digital pressure gauge 5-5, storage tank inlet 5-6, electrolyte tank 5-7. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Example:

[0031] As shown in 1-7, a device for ultrasonic assisted electrolytic grinding of array grinding head electrodes for complex surfaces includes a machine tool transmission system 1, an ultrasonic array grinding head tool electrode 2, a workpiece to be processed 3, a fixture 4, an electrolyte circulation system 5, screws 6, a power supply 7, an air compressor 8, and a pressure regulating valve 9; wherein the Z-axis guide 1-1, the X-axis guide 1-2, the Y-axis guide 1-3, and the machine tool bed 1-4 are connected in sequence, and the high-speed turntable 1-5 is assembled on the Z-axis guide 1-1 of the machine tool, the ultrasonic array grinding head tool electrode 2 is coaxially connected to the high-speed turntable 1-5 by screws, and the array grinding head electrode 2-15 realizes four degrees of freedom movement with the machine tool, including translation of the X-axis, Y-axis, and Z-axis and high-speed rotation of the Z-axis.

[0032] The ultrasonic array grinding head tool electrode 2 is connected to the ultrasonic power supply 2-7, so that the grinding head electrode 2-15 performs high-frequency ultrasonic vibration with a vibration frequency of 28kHz. The ultrasonic vibration of the grinding head electrode promotes the circulation of electrolyte in the processing area, increases the discharge rate of electrolytic grinding products, and thereby improves the electrolytic grinding processing accuracy.

[0033] The workpiece 3 to be processed is connected to the positive pole of the power supply 7 as the anode of electrolytic machining, and the grinding head electrode 2-15 is connected to the negative pole of the power supply 7 as the cathode of electrolytic machining. After the power is turned on, an electrochemical dissolution reaction occurs on the surface of the workpiece to remove the surface burrs of the metal. The machining process is not affected by the strength and hardness of the workpiece material and is suitable for the machining of difficult-to-machine metal materials.

[0034] The workpiece 3 to be processed is fixed to the fixture 4 by screws 6, the fixture 4 is placed in the electrolyte tank 5-7, and the electrolyte tank 5-7 is placed on the machine tool bed 1-4. Figure 7 As shown in the schematic diagram of the electrolyte circulation system, the electrolyte required for processing is stored in the electrolyte storage tank 5-1, and the centrifugal pump 5-3 draws electrolyte from the reservoir outlet 5-2, and passes through the filter 5-4 and the digital pressure gauge 5-5 to provide electrolyte for electrolytic processing. After processing, the electrolyte is collected through the electrolyte tank 5-7 and returned to the reservoir through the reservoir inlet 5-6. The electrolyte provides a medium for electrolytic processing and takes away the products of electrolytic processing and grinding processing.

[0035] The structure diagram of the ultrasonic array grinding head tool electrode 2 is as follows Figure 3 As shown, the gas quick-connect joint 2-1 is connected to the bolt 2-9 of the pre-threaded hole in the rear section through a thread, and the ultrasonic array grinding head electrode is composed of a gasket 2-10, a rear end cover 2-2, a piezoelectric ceramic group 2-3, a front end cover 2-4, and an amplitude transformer 2-5 from top to bottom, which are tightly connected by the bolt 2-9. The pressure sensor 2-11 is placed at the front end of the ultrasonic amplitude transformer, and the amplitude transformer 2-5, the connector 2-12, and the spring fixing shell 2-14 are assembled with the amplitude transformer 2-5 through threads in sequence. The spring 2-16 is sleeved on the grinding head electrode 2-15, and the end of the spring 2-16 is against the limit block 2-13. The limit block 2-13 can bear the upward spring force of the spring while limiting the excessive upward movement of the grinding head electrode. The upper end of the gas quick-connect joint 2-1 is connected to the air compressor 8 through the pressure regulating valve 9, and the lower end is connected to the bolt 2-9, so that the gas generated by the air compressor 8 enters the front end of the variable amplitude rod 2-5 through the central through hole 2-8 of the bolt and the through hole 2-6 of the variable amplitude rod. The gas pushes the grinding head electrode 2-15 downward, and works together with the upward force exerted by the spring 2-16 on the grinding head electrode 2-15. The pressure regulating valve 9 is adjusted by feedback information from the pressure sensor 2-11 to realize the control of the grinding pressure during electrolytic grinding.

[0036] The ultrasonic array grinding head tool electrode 2 electrolytically grinds complex curved surfaces. The diamond abrasive coating 2-17 at the front end of the grinding head electrode 2-15 maintains a constant electrolytic machining gap. The spring and air pressure feedback adjustment system can adjust the pressure of the electrolytic grinding in real time. The grinding head electrode rotates at high speed so that the diamond abrasive coating and the workpiece to be processed rub at high speed to remove burrs on the metal surface, so that the front end of the array grinding head electrode performs electrolytic grinding along the curved workpiece surface. When performing ultrasonic electrolytic grinding of curved surfaces, since the spring and air pressure feedback system and the diamond abrasives of the grinding head electrode can ensure that the grinding head electrode and the workpiece to be processed maintain a constant gap and machining pressure, the movement of the ultrasonic array grinding head electrode in the z-axis direction can be reduced, the complex design of the grinding trajectory can be reduced, and a more easily operable ultrasonic electrolytic grinding process can be achieved.

[0037] The grinding head electrode 2-15 array is installed at the front end of the horn 2-5. The schematic diagram of the array installation is as follows: Figure 6 As shown, a total of 13 grinding head electrodes are installed at the center of the circle and in two circular arrays centered on the center of the circle. The diameter of the grinding head electrode is 1 mm and the total length is 30 mm. During processing, the linear speed is required to be no less than 10 m / s. The radii of the circular arrays are 250 microns and 500 microns respectively. The grinding head electrodes are installed in a circular array, which greatly improves the efficiency of electrolytic grinding.

[0038] The present invention adopts array grinding head electrode ultrasonic assisted electrolytic grinding to perform electrolytic grinding on complex curved surfaces. The electrolytic grinding of complex curved workpiece profiles is achieved by combining ultrasonic vibration assisted processing, electrolytic processing and mechanical grinding processing methods. The array grinding head tool electrode 2 is connected to the ultrasonic power supply 2-7, the array grinding head tool electrode 2 is connected to the negative pole of the power supply, and the workpiece 3 to be processed is connected to the positive pole of the power supply. The array grinding head tool electrode 2 is driven by the machine tool high-speed turntable 1-5 and the machine tool guide rail to perform ultrasonic electrolytic grinding on the surface of the workpiece 3 to be processed. The array grinding head electrode grinding process removes the protruding particles on the surface of the workpiece, the electrolytic processing realizes the removal of burrs on the surface of difficult-to-process materials, and the ultrasonic energy field assisted processing promotes the discharge of electrolytic products and accelerates the circulation of the electrolyte. Under the joint action of electrolytic processing, mechanical grinding and ultrasonic energy field assisted processing, the array grinding head electrode and the spring and air pressure feedback adjustment system are used at the same time, which can realize easy operation, high efficiency and high precision electrolytic grinding of complex curved surfaces.

[0039] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0040] Although this article uses more reference numerals in the figure: machine tool transmission system 1, ultrasonic array grinding head tool electrode 2, workpiece to be processed 3, fixture 4, electrolyte circulation system 5, screws 6, power supply 7, air compressor 8, pressure regulating valve 9, Z-axis guide rail 1-1, X-axis guide rail 1-2, Y-axis guide rail 1-3, machine tool bed 1-4, high-speed turntable 1-5, gas quick-connect connector 2-1, rear end cover 2-2, piezoelectric ceramic group 2-3, front end cover 2-4, amplitude rod 2-5, amplitude rod through hole 2-6, ultrasonic power supply 2 -7, bolt through hole 2-8, bolt 2-9, washer 2-10, pressure sensor 2-11, connector 2-12, grinding head electric limit block 2-13, spring fixing shell 2-14, grinding head electrode 2-15, spring 2-16, diamond abrasive coating 2-17, electrolyte reservoir 5-1, reservoir outlet 5-2, centrifugal pump 5-3, filter 5-4, digital pressure gauge 5-5, reservoir inlet 5-6, electrolyte tank 5-7 and other terms, but does not exclude the possibility of using other terms. The use of these terms is only for the purpose of more conveniently describing and explaining the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. An array grinding head electrode ultrasonic assisted electrolytic grinding device for complex curved surfaces, characterized in that: The invention comprises an air pressure feedback regulation system, a machine tool transmission system (1), and an ultrasonic array grinding head tool electrode (2) connected to the machine tool transmission system (1); an electrolyte circulation system (5) is installed on the machine tool transmission system (1), a fixture (4) is arranged on the electrolyte circulation system (5), and the fixture (4) is fixedly connected to a workpiece to be processed (3) by means of screws (6); the ultrasonic array grinding head tool electrode (2) comprises a gas quick-connect joint (2-1), a gasket (2-10), a rear end cover (2-2), a piezoelectric ceramic group (2-3), a front end cover (2-4), and a horn (2-5) arranged in sequence from top to bottom; the gasket (2-10), the rear end cover (2-2), Bolts (2-9) are inserted into the piezoelectric ceramic group (2-3), the front end cover (2-4) and the amplitude transformer (2-5); the gas quick-connect joint (2-1) is connected to the bolt (2-9) with a pre-set threaded hole at the rear section through a thread; the ultrasonic array grinding head tool electrode (2) also includes a pressure sensor (2-11), a connector (2-12), a limit block (2-13), a spring fixing shell (2-14), a plurality of grinding head electrodes (2-15) and a spring (2-16); a pressure sensor (2-11) is arranged at the front end of the amplitude transformer (2-5); the amplitude transformer (2-5), the connector (2-12) and the spring fixing shell (2-14) are connected to the amplitude transformer through threads in sequence. (2-5), the spring (2-16) is sleeved on the grinding head electrode (2-15), and the end of the spring (2-16) is against the limit block (2-13), and the limit block (2-13) can bear the upward spring force of the spring while limiting the excessive upward movement of the grinding head electrode; the upper end of the gas quick connector (2-1) is connected to the air compressor (8) through the pressure regulating valve (9), and the lower end is connected to the bolt (2-9), so that the gas generated by the air compressor (8) enters the front end of the amplitude rod (2-5) through the bolt through hole (2-8) and the amplitude rod through hole (2-6), and the gas pushes the grinding head electrode (2-15) downward, and exerts pressure on the grinding head electrode (2-15) with the spring (2-16). 5) upward forces act together, and the pressure regulating valve (9) is adjusted through feedback information from the pressure sensor (2-11) to achieve control of the grinding pressure during electrolytic grinding; the electrolyte circulation system (5) comprises an electrolyte tank (5-7), a reservoir inlet (5-6) is formed at the bottom of the electrolyte tank (5-7), a pipeline is installed on the reservoir inlet (5-6), the pipeline is connected to the electrolyte reservoir (5-1), a reservoir outlet (5-2) is formed at the top of the electrolyte reservoir (5-1), a pipeline is installed on the reservoir outlet (5-2), and a centrifugal pump (5-3), a filter (5-4) and a digital pressure gauge (5-5) are arranged on the pipeline in sequence;The centrifugal pump (5-3) extracts electrolyte from the liquid storage tank outlet (5-2), passes through the filter (5-4) and the digital pressure gauge (5-5) to provide electrolyte for electrolytic processing, and the processed electrolyte is collected through the electrolyte tank (5-7) and flows back to the electrolyte storage tank (5-1) through the liquid storage tank inlet (5-6). ; 2. According to claim 1, an array grinding head electrode ultrasonic assisted electrolytic grinding device for complex curved surfaces, characterized in that: The machine tool transmission system (1) comprises a machine tool bed (1-4), a Z-axis guide rail (1-1), an X-axis guide rail (1-2) and a Y-axis guide rail (1-3) mounted on the machine tool bed (1-4), wherein a high-speed turntable (1-5) is mounted on the Z-axis guide rail (1-1); and an ultrasonic array grinding head tool electrode (2) is coaxially connected to the high-speed turntable (1-5) via screws.

3. The ultrasonic-assisted electrolytic grinding device of array grinding head electrodes for complex curved surfaces according to claim 1, characterized in that: A diamond abrasive grain coating (2-17) is attached to the front end of the grinding head electrode (2-15).

4. The ultrasonic-assisted electrolytic grinding device of array grinding head electrodes for complex curved surfaces according to claim 3, characterized in that: The grinding head electrode (2-15) array is installed at the front end of the amplitude transformer (2-5), wherein the number of the grinding head electrodes (2-15) is 13, the diameter of the grinding head electrodes (2-15) is 1 mm, and the total length is 30 mm.

5. The ultrasonic-assisted electrolytic grinding device of array grinding head electrodes for complex curved surfaces according to claim 1, characterized in that: The workpiece (3) to be processed is a conductive metal material, wherein the conductive metal material is iron or copper.

6. A method for using the array grinding head electrode ultrasonic assisted electrolytic grinding device for complex curved surfaces as claimed in any one of claims 1 to 5, characterized in that: The following steps are involved: Step 1. Fix the workpiece to be processed (3) on the fixture (4), immerse the workpiece to be processed (3) and the fixture (4) in the electrolyte of the electrolyte tank (5-7); fix the electrolyte tank (5-7) on the machine tool bed (1-4), and connect the workpiece to be processed (3) to the positive electrode of the power supply (7); Step 2. Assemble the grinding head electrode (2-15) array at the front end of the ultrasonic horn (2-5) to form an ultrasonic array grinding head tool electrode (2), connect the ultrasonic device of the ultrasonic array grinding head tool electrode (2) to the ultrasonic power supply (2-7), connect the ultrasonic array grinding head tool electrode (2) to the negative pole of the power supply (7), and assemble the ultrasonic array grinding head tool electrode (2) onto the high-speed turntable (1-5) of the machine tool transmission system (1); Step 3. Move the grinding head electrode (2-15) through the machine tool bed (1-4) to the surface of the workpiece (3) to be processed, connect the electrolytic processing power supply, ultrasonic power supply (2-7), and electrolyte circulation system (5), and drive the X-axis, Y-axis, and Z-axis of the machine tool. The grinding head electrode (2-15) moves closely to the surface of the workpiece, and adjusts the gas pressure regulating valve (9) through feedback information from the pressure sensor (2-11) to ensure that the processing gap and processing pressure are constant; the workpiece surface material is removed by the grinding action of the abrasive on the tool electrode surface and the electrolytic processing action.

Images