A laser-electro-ultrasonic in-situ combined ultra-precision cutting device for black metal

Abstract

The application discloses a laser-electrolysis-ultrasonic in-situ composite super-precision cutting device for black metal, which comprises a workpiece, a diamond tool head, a tool handle, an ultrasonic vibration unit, a focused infrared laser beam and a metal layer. In the machining process, an electrochemical reaction occurs at the cutting position of the workpiece to generate an oxidation layer with soft and loose quality and weak carbon affinity, thereby avoiding direct contact between the diamond and the black metal matrix material and reducing chemical wear caused by iron-carbon affinity. The application simultaneously introduces inert high-pressure airflow and electrolyte droplet jet flow for continuous heat dissipation and cooling of the machining area, so that the machining process temperature is reduced. On this basis, the focused infrared laser beam introduced in the machining process can accelerate the electrochemical reaction and increase the thickness of the oxidation layer, thereby being beneficial to efficient and low-temperature cutting. The ultrasonic vibration introduced in the machining process can further utilize the ultrasonic cavitation effect to accelerate material removal and removal. Through the ingenious in-situ composite of the laser, the ultrasonic and the electrolysis electric field, high-quality, efficient, super-precision and low-loss machining of the black metal complex component is realized.

Description

Technical Field

[0001] This invention relates to a laser-electrolysis-ultrasonic in-situ composite ultra-precision cutting device for ferrous metals, belonging to the field of ultra-precision machining. Background Technology

[0002] Ferrous metals are widely used in modern industry due to their superior mechanical properties. However, for complex-shaped ferrous metal workpieces requiring ultra-high precision and high surface quality, grinding, lapping, and polishing processes are complex, time-consuming, costly, and often fail to achieve the desired processing results. Diamond, with its extremely high hardness, can form a sharp cutting edge for ultra-thin cutting, making it one of the ideal tool materials for ultra-precision machining. However, when cutting ferrous metals, the carbon in diamond tools readily undergoes a chemical affinity reaction with the ferrous metal at high temperatures, forming metal carbides, leading to rapid tool wear and hindering the production of highly consistent ultra-precision components. This rapid and severe tool wear significantly limits the promotion and application of diamond ultra-precision cutting technology in the ferrous metal field.

[0003] To reduce tool wear and improve cutting performance, researchers have explored various technical solutions. Patent application US2012024827A1 proposes a multi-source laser-assisted cutting technology. By adjusting the laser energy at multiple angles, the temperature distribution in the cutting area is controlled, thereby softening the material and reducing tool wear. However, because iron and carbon react more readily at high temperatures, this technology still has limitations when using diamond tools to cut ferrous metals. Patent application CN111069767B proposes integrating ultrasonic vibration, single-point diamond cutting, and micro-laser assistance into the same processing system. High-frequency defocusing of the laser beam is achieved through ultrasonic vibration, reducing the accumulation of laser thermal effects. However, the focused laser beam introduced by this technology is also not conducive to suppressing chemical wear during diamond cutting of ferrous metals. Patent application CN107363552A proposes using laser-assisted generation of a soft oxide layer. Low-power lasers are used during the process to avoid continuous heat accumulation. However, the oxygen-rich environment easily causes oxidation on the workpiece surface, leading to surface deterioration. The patent application with application number CN113211161B proposes to slow down the chemical wear caused by the affinity of iron and carbon by isolating the reaction between diamond and ferrous metals with oxides. This technology relies on chemical energy to generate oxides, which can also easily cause the processed surface to deteriorate.

[0004] Besides oxidation by oxidants, electrochemical reactions can also rapidly generate an oxide layer of controllable thickness, and this oxide layer is formed only in the reaction zone, avoiding secondary contamination of the processed surface. Furthermore, environmentally friendly solutions, such as neutral NaCl and NaNO3, can be used in electrochemical reactions. The electrode reactions for the formation of the oxide layer in electrochemical reactions are as follows:

[0005]

[0006] For ferrous metals, the reaction mainly produces a soft layer containing Fe2O3, Fe3O4, etc., which has low cutting force, helps to reduce mechanical wear of the tool, and improves cutting accuracy. In addition, these oxides have a weak affinity with diamond, which can act as an isolation layer to improve chemical wear caused by affinity.

[0007] Studies have shown that increasing temperature helps accelerate electrochemical reactions. Lasers, as a highly localized heat source, are particularly suitable for localized heating during the reaction process. Localized temperature increases facilitate electrochemical reactions, further improving processing localization. Compared to laser thermal softening technology, laser-assisted electrochemical oxidation technology requires lower laser power, accelerating the electrochemical reaction while avoiding the introduction and accumulation of excessive heat. The oxide layer generated by the electrochemical reaction is soft and porous, easy to remove, requiring less cutting effort and generating less heat. The combination of laser and electrochemistry achieves faster oxidation rates, greater oxidation depths, and better localization. The introduction of ultrasound can generate cavitation effects in the processing zone, which is beneficial for material removal and chip clearance. Based on existing research, this invention proposes a laser-electrolysis-ultrasound in-situ composite ultra-precision cutting device for ferrous metals, achieving highly consistent precision cutting of ferrous metal diamonds through multi-energy field composite effects. Summary of the Invention

[0008] To address the shortcomings of existing diamond ultra-precision cutting technologies in ferrous metal processing, this invention proposes a laser-electrolysis-ultrasonic in-situ composite ultra-precision cutting device for ferrous metals that achieves high efficiency, precision, and controllability through multi-energy field composite action.

[0009] To solve the above problems, the technical solution of the present invention is: a laser-electrolysis-ultrasonic in-situ composite ultra-precision cutting device for ferrous metals, comprising a tool holder, a focused infrared laser beam, an ultrasonic vibration unit, a servo drive platform, and a workpiece, characterized in that: it further comprises a diamond tool head with an airflow channel and a liquid supply channel, an electrolyte circulation and filtration unit, an electrolyte, a high-pressure pulse airflow generation unit, an inert high-pressure airflow, and an electrolysis power supply; the airflow channel has an inlet and an outlet; the inlet and outlet are located on the back and front face of the diamond tool head, respectively; the airflow channel is arranged horizontally and obliquely downward inside the diamond tool head, with its axis forming an angle of 10° to 30° with the horizontal plane; the cross-sectional area of ​​the airflow channel along the inlet... The cross-sectional area decreases in a stepped manner towards the air outlet, and each segment has a rectangular cross-sectional shape. The liquid supply channel has an inlet and an outlet. The inlet and outlet are located on the upper part of the rake face and the smallest cross-sectional section of the airflow channel, respectively. The liquid supply channel is arranged vertically inside the diamond cutter head, with the inlet located directly above the outlet. The cross-sectional area of ​​the liquid supply channel decreases in a stepped manner from the inlet to the outlet, and each segment has a rectangular cross-sectional shape. The axes of the airflow channel, the liquid supply channel, and the diamond cutter head tip are coplanar. The geometry and dimensions of the smallest cross-sectional section of the airflow channel are the same as those of the outlet. The rake face of the diamond cutter head has a width of 0.15mm. The device comprises a microfluidic channel with a depth of 0.15 mm and a circular micro-storage tank with a diameter of 1.5 mm and a depth of 0.15 mm; the center lines of symmetry of the microfluidic channel and the circular micro-storage tank coincide with the center lines of symmetry of the rake face, and the lowest point of the circular micro-storage tank is 1.5 mm from the tip of the rake face; the microfluidic channel and the circular micro-storage tank are located below the air outlet; the upper and lower ends of the microfluidic channel are respectively connected to the air outlet and the circular micro-storage tank; the depth of the microfluidic channel is the same as the depth of the micro-storage tank; the inner walls of the airflow channel, the inner walls of the liquid supply channel, the bottom surface of the microfluidic channel, and the bottom surface of the circular micro-storage tank are all coated with an acid and alkali corrosion resistant metal layer; the electrolyte circulation filtration unit is connected to the liquid inlet, and the electrolyte circulation filtration unit operates at a frequency of 1 kHz. A 10% NaNO3 solution with a pump pressure of 1.0 MPa is pumped in. The high-pressure pulsed airflow generating unit is connected to the air inlet and outputs compressed nitrogen gas with a pressure of 1.0 MPa at a frequency of 5 kHz. The positive terminal of the electrolytic power supply is electrically connected to the workpiece, and the negative terminal is electrically connected to the metal layer inside the diamond cutter head. The diamond cutter head is fixed on the tool holder. The tool holder is fixed on the ultrasonic vibration unit. The ultrasonic vibration unit is fixed to the servo drive platform. The focused infrared laser beam enters from the back of the diamond cutter head and exits from the tip. The airflow channel is located above the focused infrared laser beam, and the airflow channel axis, the focused infrared laser beam axis, and the symmetrical central axis of the diamond cutter head are coplanar.

[0010] The working principle of this invention is as follows: The electrolyte is pumped into the inlet by the electrolyte circulation and filtration unit. After moving to the outlet through the supply channel, it forms electrolyte jet droplets under the action of inert high-pressure airflow in the airflow channel. The jet droplets are ejected from the outlet with the inert high-pressure airflow and then flow along the microchannel to the micro-storage tank under the action of the workpiece chips. The electrolyte and the inert high-pressure airflow cool the passed parts to avoid heat accumulation. The workpiece is positively charged when connected to the positive terminal of the electrolytic power supply, and the metal layer of the diamond cutting head is negatively charged when connected to the negative terminal of the electrolytic power supply. The workpiece and the diamond cutting head are filled with electrolyte to form a circuit and undergo an electrochemical reaction. The metal surface material covered with electrolyte in the cutting zone undergoes anodic oxidation to form a soft, loose oxide layer with weak carbon affinity. On the one hand, the cutting action of diamond tools has shifted from directly cutting the matrix of ferrous elemental metals (such as Fe, Cr, Mn, etc.) to cutting and removing loose and soft oxide materials. This significantly reduces cutting force, cutting heat generation, and mechanical wear. On the other hand, after the reactive ferrous metals are converted into inert oxides, the chemical affinity between them and the carbon elements in diamond is significantly weakened. The oxide layer acts as an isolation layer, preventing direct contact between diamond and ferrous metals, thus greatly reducing chemical wear on diamond tools. The introduction of a low-power, low-intensity focused infrared laser beam further accelerates the electrochemical reaction rate (ferrous metal oxidation rate), allowing the metal oxidation rate to better match the cutting rate. Simultaneously, the high-pressure, high-speed airflow delivers jet droplets to the machining micro-area in a discontinuous manner, achieving multiple synergistic effects such as micro-supply, localized action, and airflow cooling. This results in lower temperatures in the tool system and machining area, and extremely localized anodization of the material, thereby achieving low-temperature cutting and ultra-micro-volume cutting effects. Building upon this foundation, ultrasonic vibration is employed. Through the cavitation effect within the electrolyte and the high-frequency vibration of the cutting edge, efficient material removal, rapid chip clearance, and immediate heat dissipation are promoted, thereby reducing tool wear and improving machining efficiency and stability. High-pressure airflow and electrolyte jet droplets pass through the tool body, continuously and stably cooling the diamond tool body, reducing thermal deformation, and ensuring stable operation of the tool system.

[0011] Compared with the prior art, the outstanding advantages of the present invention are as follows.

[0012] 1. Extremely low tool wear and longer tool life.

[0013] This device employs a unique electrochemical anodizing principle to rapidly transform the active ferrous metal material being cut into a soft, porous, and chemically inactive oxide material at low temperatures. This makes diamond cutting easier, reduces tool-material friction, and minimizes heat generation. Furthermore, the affinity between the material being cut and the carbon element in the diamond tool is significantly reduced after the material is transformed into an oxide material. In addition, the oxide layer isolates the tool from the ferrous elemental metal, preventing direct contact and thus greatly reducing mechanical and chemical wear, significantly extending the tool's service life.

[0014] 2. Higher processing precision and efficiency, and better surface quality.

[0015] This invention comprehensively employs measures such as electrochemical oxidation to soften materials, low-intensity laser-assisted heating to accelerate oxidation, high-speed airflow and micro-droplet cooling to reduce the temperature of the cutting body and cutting zone, modification and inertization of ferrous metal materials, and ultrasonic vibration to promote cutting removal and heat dissipation. These measures enable the material removal process to be more labor-saving, precise, gentle, efficient, and stable, resulting in significantly improved processing accuracy, less surface / surface damage, and a smoother surface. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the device composition of the present invention.

[0017] Figure 2 This is a structural diagram of the diamond cutting tool head of the present invention.

[0018] Figure 3 This is a schematic diagram of the energy field effect during the processing of this invention.

[0019] Figure 4 This is a schematic diagram of droplet formation and electrochemical reaction during the processing of this invention.

[0020] The labels in the diagram are as follows: 1. Workpiece; 2. Diamond cutter head; 3. Tool holder; 4. Ultrasonic vibration unit; 5. Focused infrared laser beam; 6. Servo drive platform; 7. Metal layer; 8. Electrolyte circulation and filtration unit; 9. High-pressure pulse airflow generation unit; 10. Electrolysis power supply; 11. High-pressure airflow; 12. Electrolyte; 21. Back side of diamond cutter head; 22. Rake face; 23. Tool tip; 24. Airflow channel; 25. Liquid supply channel; 221. Microfluidic channel; 222. Circular micro-liquid reservoir; 241. Air inlet; 242. Air outlet; 251. Liquid inlet; 252. Liquid outlet. Detailed Implementation

[0021] The following is combined Figures 1-4 The implementation of the present invention will be described in further detail.

[0022] A laser-electrolysis-ultrasonic in-situ composite ultra-precision cutting device for ferrous metals includes a tool holder 3, a focused infrared laser beam 5, an ultrasonic vibration unit 4, a servo drive platform 6, and a workpiece 1. Its features include: a diamond cutting head 2 with an airflow channel 24 and a liquid supply channel 25; an electrolyte circulation and filtration unit 8; an electrolyte 12; a high-pressure pulsed airflow generation unit 9; an inert high-pressure airflow 11; and an electrolysis power supply 10. The airflow channel 24 has an inlet 241 and an outlet 242, located on the back face 21 and front face 22 of the diamond cutting head 2, respectively. The airflow channel 24 is arranged horizontally and downwards inside the diamond cutting head 2, with its axis... The angle with the horizontal plane is 20°; the cross-sectional area of ​​the airflow channel 24 decreases in a stepped manner from the air inlet 241 to the air outlet 242, and each segment has a rectangular cross-sectional shape; the liquid supply channel 25 is provided with an inlet 251 and an outlet 252; the inlet 251 and the outlet 252 are respectively located on the upper part of the rake face 22 and the smallest cross-sectional section of the airflow channel 24; the liquid supply channel 25 is arranged vertically inside the diamond cutter head 2, and the inlet 251 is located directly above the outlet 252; the cross-sectional area of ​​the liquid supply channel 25 decreases in a stepped manner from the inlet 251 to the outlet 252, and each segment has a rectangular cross-sectional shape; the axis of the airflow channel 24 is... The axis of the liquid supply channel 25 and the tip 23 of the diamond cutter head 2 are coplanar; the geometry and dimensions of the minimum cross-sectional section of the airflow channel 24 are the same as those of the liquid outlet 252; the front cutting face 22 of the diamond cutter head 2 is provided with a microfluidic channel 221 with a width of 0.15 mm and a depth of 0.15 mm and a circular micro-liquid reservoir 222 with a diameter of 1.5 mm and a depth of 0.15 mm; the center line of symmetry of the microfluidic channel 221 and the circular micro-liquid reservoir 222 coincides with the center line of symmetry of the front cutting face 22, and the lowest point of the circular micro-liquid reservoir 222 is about 1.5 mm away from the tip 23; the microfluidic channel 221 and the circular micro-liquid reservoir 222 are located below the air outlet 242. The microfluidic channel 221 is connected to the air outlet 242 and the circular micro-liquid reservoir 222 at its upper and lower ends, respectively. The depth of the microfluidic channel 221 is the same as the depth of the micro-liquid reservoir 222. The inner wall of the airflow channel 24, the inner wall of the liquid supply channel 25, the bottom surface of the microfluidic channel 221, and the bottom surface of the circular micro-liquid reservoir 222 are all coated with an acid and alkali resistant metal layer 7. The electrolyte circulation filtration unit 8 is connected to the liquid inlet 251, and the electrolyte circulation filtration unit 8 pumps in a 10% NaNO3 solution at a pressure of 1.0 MPa at a frequency of 1 kHz. The high-pressure pulse airflow generating unit 9 is connected to the air inlet 241, and the high-pressure pulse airflow generating unit 9 outputs a pressure of 1.0 MPa at a frequency of 5 kHz.Compressed nitrogen at 0 MPa; the positive terminal of the electrolytic power supply 10 is electrically connected to the workpiece 1, and the negative terminal is electrically connected to the metal layer 7 inside the diamond cutter head 2; the diamond cutter head 2 is fixed on the shank 3; the shank 3 is fixed on the ultrasonic vibration unit 4; the ultrasonic vibration unit 4 is fixed to the servo drive platform 6; the focused infrared laser beam 5 enters from the back 21 of the diamond cutter head 2 and exits from the tip 23; the airflow channel 24 is located above the focused infrared laser beam 5, and the axis of the airflow channel 24, the axis of the focused infrared laser beam 5, and the symmetrical central axis of the diamond cutter head 2 are coplanar.

[0023] Utilize Figure 3 , Figure 4 The apparatus shown performs processing, including steps executed in the following order:

[0024] Step 1: Install the diamond cutting head 2 onto the tool holder 3, install the tool holder 3 onto the ultrasonic vibration unit 4, install the ultrasonic vibration unit 4 onto the servo drive platform 6, connect the outlet of the high-pressure pulse airflow generating unit 9 to the inlet 241 of the diamond cutting head 2, connect the outlet of the electrolyte circulation filter unit 8 to the inlet 251 of the diamond cutting head 2, turn on the focused infrared laser beam 5 and focus it at the cutting tip 23 with a power of 0.5W, control the servo feed platform 6 to move the diamond cutting head 2 to the machining origin, connect the positive terminal of the electrolytic power supply 10 to the workpiece, and connect the negative terminal of the electrolytic power supply 10 to the metal layer 7.

[0025] Step 2: Adjust the power of the focused infrared laser beam 5 to 10W, turn on the electrolyte circulation filter unit 8 and output NaNO3 electrolyte at a frequency of 1kHz and a pressure of 1.0MPa, turn on the high-pressure pulse airflow generation unit 9 and output nitrogen gas at a pressure of 1.0MPa at a frequency of 5kHz, turn on the electrolysis power supply 10 and set the voltage to 20V, turn on the ultrasonic vibration unit 4 and set the frequency to 20kHz, control the servo drive platform 6 and make it move along the given path.

[0026] Step 3: Electrolyte 12 enters the diamond cutting head 2 through the inlet 251, forms droplets under the action of inert high-pressure airflow 11, and then moves to the outlet 242 with the inert high-pressure airflow 11, continuously cooling the inside of the diamond cutting head 2.

[0027] Step 4: Electrolyte 12 droplets are ejected from outlet 242 under the action of inert high-pressure gas flow 11, and move along microchannel 221 to micro reservoir 222 under the action of workpiece 1 chips, cooling the heat-affected zone along the way. The surface of workpiece 1 is positively charged when connected to the positive electrode of electrolytic power supply 10, and the metal layer 7 of diamond cutter head 2 is negatively charged when connected to the negative electrode of electrolytic power supply 10, forming an electrolytic cell. Under the action of focused infrared laser beam 5, the electrochemical reaction is accelerated, generating a thicker and softer surface oxide layer. The surface oxide layer is soft and easy to remove, and at the same time, it isolates the workpiece 1 substrate material from the diamond cutter head 2, reducing chemical wear during the cutting process. Electrolyte 12 in the processing area undergoes cavitation under the action of ultrasound, which assists in mass transfer and facilitates chip removal.

[0028] Step 5: After processing is complete, turn off the ultrasonic vibration unit 4, focused infrared laser beam 5, electrolytic power supply 10, electrolyte circulation and filtration unit 8, and high-pressure pulse airflow generation unit 9. Control the servo drive platform 6 to move the diamond cutter head 2 away from the workpiece 1, remove, clean, and dry the workpiece 1 to complete the processing.

[0029] The above content is only a preferred embodiment of the present invention. For those skilled in the art, based on the ideas of the present invention, many changes can be made in the specific implementation methods and application scope, and all such changes are within the protection scope of this patent without departing from the concept of the present invention.

Claims

1. A laser-electrolysis-ultrasonic in-situ composite ultra-precision cutting device for ferrous metals, comprising a tool holder (3), a focused infrared laser beam (5), an ultrasonic vibration unit (4), a servo drive platform (6), and a workpiece (1), characterized in that: It also includes a diamond cutting head (2) with an airflow channel (24) and a liquid supply channel (25), an electrolyte circulation and filtration unit (8), an electrolyte (12), a high-voltage pulse airflow generation unit (9), an inert high-voltage airflow (11), and an electrolytic power supply (10); the airflow channel (24) is provided with an air inlet (241) and an air outlet (242); the air inlet (241) and the air outlet (242) are located on the back (21) and front cutting face (22) of the diamond cutting head (2), respectively; the airflow channel (24) is arranged horizontally and obliquely downward inside the diamond cutting head (2), and the angle between its axis and the horizontal plane is 10°~30°; the cross-sectional area of ​​the airflow channel (24) is along the air inlet (241) and the front cutting face (25). 1) The cross-sectional area decreases in a stepped manner from the air outlet (242) to the air outlet (242), and each segment has a rectangular cross-sectional shape; the liquid supply channel (25) is provided with an inlet (251) and an outlet (252); the inlet (251) and outlet (252) are located on the upper part of the front cutting face (22) and the smallest cross-sectional section of the airflow channel (24), respectively; the liquid supply channel (25) is arranged vertically inside the diamond cutting head (2), and the inlet (251) is located directly above the outlet (252); the cross-sectional area of ​​the liquid supply channel (25) decreases in a stepped manner from the inlet (251) to the outlet (252), and each segment has a rectangular cross-sectional shape; the axis of the airflow channel (24), the liquid supply channel ( The axis of the diamond cutter head (2) and the tip (23) of the diamond cutter head (2) are coplanar; the geometry and size of the minimum cross-sectional section of the airflow channel (24) are the same as the geometry and size of the liquid outlet (252); the front face (22) of the diamond cutter head (2) is provided with a micro-channel (221) and a circular micro-liquid reservoir (222); the center line of symmetry of the micro-channel (221) and the circular micro-liquid reservoir (222) coincides with the center line of symmetry of the front face (22); the micro-channel (221) and the circular micro-liquid reservoir (222) are located below the air outlet (242); the upper and lower ends of the micro-channel (221) are respectively connected to the air outlet (242) and the circular micro-liquid reservoir (222); the micro-channel (221) is coplanar with the tip (23) of the diamond cutter head (2); the minimum cross-sectional shape and size of the airflow channel (24) are the same as the geometry and size of the liquid outlet (252); the front face (22) of the diamond cutter head (2) is provided with a micro-channel (221) and a circular micro-liquid reservoir (222); the micro-channel (221) is coplanar with the tip (23) of the diamond cutter head (2) and the tip (23) of the diamond cutter head (2); the micro-channel (24 ... The depth of the flow channel (221) is the same as the depth of the micro liquid storage tank (222); the inner wall of the airflow channel (24), the inner wall of the liquid supply channel (25), the bottom surface of the micro flow channel (221), and the bottom surface of the circular micro liquid storage tank (222) are all coated with a metal layer (7) resistant to acid and alkali corrosion; the electrolyte circulation filtration unit (8) is connected to the liquid inlet (251); the high-pressure pulse airflow generating unit (9) is connected to the air inlet (241); the positive terminal of the electrolytic power supply (10) is electrically connected to the workpiece (1), and the negative terminal is electrically connected to the metal layer (7) inside the diamond cutter head (2); the diamond cutter head (2) is fixed on the handle (3); the handle (3) is fixed on the ultrasonic vibration unit (4);The ultrasonic vibration unit (4) is fixed to the servo drive platform (6); the focused infrared laser beam (5) enters from the back (21) of the diamond cutter head (2) and exits from the tip (23); the airflow channel (24) is located above the focused infrared laser beam (5), and the axis of the airflow channel (24), the axis of the focused infrared laser beam (5), and the symmetrical central axis of the diamond cutter head (2) are coplanar.

2. The laser-electrolysis-ultrasonic in-situ composite ultra-precision cutting device for ferrous metals according to claim 1, characterized in that: The microfluidic channel (221) has a width of 0.15 mm and a depth of 0.15 mm.

3. The laser-electrolysis-ultrasonic in-situ composite ultra-precision cutting device for ferrous metals according to claim 1, characterized in that: The circular micro-liquid storage tank (222) has a diameter of 1.5 mm and a depth of 0.15 mm.

4. The laser-electrolysis-ultrasonic in-situ composite ultra-precision cutting device for ferrous metals according to claim 1, characterized in that: The distance from the bottom of the circular micro-liquid reservoir (222) to the tip of the blade (23) is 1.5 mm.

5. The laser-electrolysis-ultrasonic in-situ composite ultra-precision cutting device for ferrous metals according to claim 1, characterized in that: The high-pressure pulse airflow generating unit (9) outputs an inert high-pressure airflow (11) with an adjustable frequency of 5kHz.

6. The laser-electrolysis-ultrasonic in-situ composite ultra-precision cutting device for ferrous metals according to claim 1, characterized in that: The electrolyte (12) is a NaCl solution or NaNO3 solution with a mass percentage concentration of 10%.

7. The laser-electrolysis-ultrasonic in-situ composite ultra-precision cutting device for ferrous metals according to claim 1, characterized in that: The microfluidic channel (221) and the circular micro liquid storage tank (222) are both axially symmetrically distributed with the central axis of the front blade (22) as the reference.

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