Immersion type magnetic field auxiliary electrochemical mechanical polishing device for additive manufacturing space lattice dot matrix

Abstract

The invention discloses an immersion type magnetic field auxiliary electrochemical mechanical polishing device of an additive manufacturing space lattice dot matrix, which comprises a main shaft system unit, the main shaft system unit comprises a Z-direction linear module, a Y-direction linear module, a main shaft motor and a main shaft, the Z-direction linear module is mounted on the Y-direction linear module in a matched manner, the main shaft motor is mounted on the Z-direction linear module, and the main shaft motor is mounted on the Y-direction linear module; the output end of the spindle motor is connected with the spindle which is provided with a clamp used for clamping a workpiece in a matched mode. The electrolytic bath is filled with electrolyte and magnetic abrasive particles, and the electrolytic bath is provided with a cathode; the magnetic field generator comprises a plurality of electromagnetic coils, the electromagnetic coils sleeve the outer side of the electrolytic bath, and a magnetic field is formed in the electrolytic bath by adjusting the current and phase of each electromagnetic coil; the cleaning tank is used for cleaning the workpieces; and the controller is used for controlling the working operation state of the device, the device is used for efficiently treating the space lattice dot matrix through the cooperation of electrochemical corrosion and mechanical friction, and the surface quality and smoothness of the lattice dot matrix are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of polishing devices, and in particular relates to an immersion magnetic field assisted electrochemical mechanical polishing device for additive manufacturing of spatial lattice lattices. Background Art

[0002] Space lattice lattice is a kind of microstructure with regular arrangement, which has excellent mechanical properties and thermal conductivity. Therefore, it has broad application prospects in aerospace, automobile manufacturing, medical equipment and other fields. However, due to its complex structural characteristics, the commonly used surface treatment methods include chemical polishing, sandblasting, etc., but chemical polishing may cause changes in the chemical composition of the material surface, which has certain pollution to the environment, and it is difficult to achieve uniform treatment of space lattice lattices with complex structures; sandblasting is difficult to process space lattice lattices with complex shapes and structures, such as internal cavities, small holes, etc., which may leave tiny scratches, bumps and deformations on the surface, resulting in increased surface roughness, and even the introduction of cracks and stress concentration, affecting the mechanical properties and durability of the material, and the efficiency is low. Therefore, traditional surface treatment methods are often difficult to meet its high-precision and high-efficiency processing requirements. Therefore, a new type of surface treatment technology is needed to meet the surface treatment needs of additive manufacturing space lattice lattices. Summary of the invention

[0003] The purpose of the present invention is to solve at least one problem in the prior art and to provide an immersion magnetic field assisted electrochemical mechanical polishing device for additive manufacturing spatial lattice lattices.

[0004] To achieve the above-mentioned purpose, the present invention proposes an immersion magnetic field assisted electrochemical mechanical polishing device for additive manufacturing spatial lattice lattices, comprising: The spindle system unit includes a Z-axis linear module, a Y-axis linear module, a spindle motor, and a spindle. The Z-axis linear module is mounted on the Y-axis linear module, and the spindle motor is mounted on the Z-axis linear module. The output end of the spindle motor is connected to the spindle. The spindle is mounted with a fixture for clamping a workpiece, and the fixture or the workpiece is connected to the positive pole of the power supply. An electrolytic cell, wherein the electrolytic cell is filled with electrolyte and magnetic abrasive particles, and the electrolytic cell is provided with a cathode for connecting to a negative electrode of a power supply; A magnetic field generator, wherein the magnetic field generator comprises a plurality of electromagnetic coils, which are sleeved on the outside of the electrolytic cell, and the intensity and direction of the magnetic field generated are adjusted by changing the current and phase of each electromagnetic coil, so that a magnetic field with a specific direction is formed inside the electrolytic cell; A high magnetic permeability component is arranged around the cathode or around the workpiece that needs to strengthen the magnetic field, thereby regulating the non-uniformity of the magnetic field inside the electrolytic cell, and achieving uniform polishing of the workpiece surface by adjusting the non-uniformity of the magnetic field to affect the flow of electrolyte and magnetic abrasive particles; A cleaning tank, wherein a cleaning component for cleaning a workpiece is arranged in the cleaning tank; A controller is used to control the working state of the Z-axis linear module, the Y-axis linear module, the spindle motor, and the magnetic field generator, as well as the current and phase flowing to the electromagnetic coil, and the electric field current between the anode and the cathode.

[0005] Preferably, the electrolytic cell is provided with a liquid inlet pipe and a liquid discharge pipe, the liquid discharge pipe is connected to a collecting device, the collecting device is used to collect magnetic abrasive particles, and the collecting device is connected to the liquid inlet pipe via a circulating pump.

[0006] Preferably, an agitator is installed inside the electrolytic cell, and the inner wall of the electrolytic cell is sprayed with an anti-rust and anti-corrosion coating.

[0007] Preferably, the cathode is hung around the electrolytic cell by hooks.

[0008] Preferably, the cleaning component comprises a spray pipe and a spray head, a cleaning liquid and a pump are provided in the cleaning tank, the spray head is connected to the spray pipe, and the spray pipe is connected to the pump.

[0009] Preferably, the cleaning component is an ultrasonic cleaner.

[0010] Preferably, a liquid level sensor is provided in the cleaning tank, and the cleaning tank is provided with a liquid discharge port and a liquid filling port, and both the liquid discharge port and the liquid filling port are provided with control valves.

[0011] Preferably, the device further comprises a drying device, which comprises a hair dryer, and the drying device is used to dry the cleaned workpiece.

[0012] Preferably, a pH sensor, a conductivity sensor and a current sensor electrically connected to the controller are provided in the electrolytic cell.

[0013] Preferably, the electrolyte is prepared by one or more of NaCl, NaNO3, NaClO3, disodium ethylenediaminetetraacetic acid, sodium metasilicate, sodium hexametaphosphate, glacial acetic acid, citric acid, oxalic acid, anhydrous ethanol, ethylene glycol, propylene glycol, butylene glycol, glycerol, triethanolamine and deionized water, and the magnetic abrasive is one or more of carbonyl iron powder, Fe3O4 abrasive, iron boron abrasive, chromium iron abrasive, and tungsten abrasive, and the particle size of the magnetic abrasive is 400#-1000#.

[0014] Beneficial effects of the present invention: 1. The present invention combines the advantages of electrochemical corrosion and mechanical polishing. By applying an electric field and a non-uniform magnetic field in the electrolyte and utilizing the synergistic effect of electrochemical corrosion and mechanical friction, it can achieve efficient treatment of the surface of the spatial lattice in a relatively short time, improve the surface quality and smoothness of the lattice, and reduce damage and deformation to the lattice material.

[0015] 2. The present invention can perform fine processing on the surface of spatial lattice lattices on a microscopic scale, and can finely control the electrochemical polishing process by regulating the non-uniformity of the magnetic field and the electric field, effectively controlling the depth, uniformity and surface morphology of the processing, and can process complex surface structures, with strong versatility and applicability.

[0016] 3. Compared with traditional chemical treatment methods, the present invention generates less waste liquid during the magnetic field-assisted electrochemical mechanical polishing process, has less impact on the environment, and has certain environmental advantages.

[0017] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0019] Figure 2 It is a schematic diagram of the internal structure of an embodiment of the present invention.

[0020] Figure 3 It is a left view of the internal structure of an embodiment of the present invention.

[0021] Figure 4 Schematic diagram of a spindle system unit according to an embodiment of the present invention.

[0022] Figure 5 It is a schematic diagram of the original roughness and surface morphology results of the spatial lattice lattice of an embodiment of the present invention.

[0023] Figure 6 It is a schematic diagram of the roughness and surface morphology results of the spatial lattice lattice after polishing of an embodiment of the present invention.

[0024] In the figure: 1. Cabinet; 2. Y-axis linear module; 3. Z-axis linear module; 4. Electrolytic cell; 5. Spindle motor; 6. Spindle; 7. Cleaning tank. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiment of the present application clearer, the technical scheme in the embodiment of the present application will be clearly and completely described in conjunction with the drawings in the embodiment of the present application. Obviously, the described embodiment is a part of the embodiment of the present application, not all of the embodiments. The components of the embodiment of the present application described and shown in the drawings here can be arranged and designed in various different configurations. In the description of the present application, it should be noted that the orientation or position relationship indicated by the terms "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship usually placed when the application product is used, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0026] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "disposed" 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 direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] The present invention is described in detail below in conjunction with the accompanying drawings.

[0028] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 This embodiment provides an immersion magnetic field assisted electrochemical mechanical polishing device for additive manufacturing spatial lattice lattices, comprising: The spindle system unit includes a Z-direction linear module 3, a Y-direction linear module 2, a spindle motor 5, and a spindle 6. The Z-direction linear module 3 is mounted on the Y-direction linear module 2 to drive and control the spindle 6 to move in the Z direction (i.e., the vertical direction). The Y-direction linear module 2 is used to drive and control the Z-direction linear module 3 and the spindle 6 to move synchronously in the Y direction (i.e., the horizontal direction). The spindle motor 5 is mounted on the Z-direction linear module 3. The output end of the spindle motor 5 is connected to the spindle 6. The spindle 6 is mounted with a fixture for clamping a workpiece. The fixture or the workpiece is connected to the positive pole of the power supply so that the workpiece or the fixture serves as an anode. An electrolytic cell 4, wherein the electrolytic cell 4 is filled with electrolyte and magnetic abrasive particles, and the electrolytic cell 4 is provided with a cathode for connecting to a negative electrode of a power source; A magnetic field generator, which includes a plurality of electromagnetic coils, which are sleeved on the outside of the electrolytic cell, and the magnetic field strength and direction are adjusted by changing the current and phase of each electromagnetic coil, so that a magnetic field with a specific direction is formed inside the electrolytic cell; A high magnetic permeability component is arranged around the cathode or around the workpiece that needs to strengthen the magnetic field, thereby regulating the non-uniformity of the magnetic field inside the electrolytic cell, and achieving uniform polishing of the workpiece surface by adjusting the non-uniformity of the magnetic field to affect the flow of electrolyte and magnetic abrasive particles; A cleaning tank 7, wherein a cleaning component for cleaning a workpiece is arranged in the cleaning tank 7; A controller is used to control the working state of the Z-axis linear module 3, the Y-axis linear module 2, the spindle motor 5, and the magnetic field generator, as well as the current and phase flowing to the electromagnetic coil, and the electric field current between the anode and the cathode.

[0029] In actual use, the workpiece to be polished is connected to the positive pole of the power supply, and the fixture is installed on the spindle 6 through a quick-change joint. Different fixtures can be replaced according to workpieces of different shapes and sizes; the magnetic field generator is used to generate a magnetic field perpendicular to the electrode; the magnetic abrasive particles move relative to the workpiece under the action of the magnetic field, which is used for electrochemical mechanical polishing; the current intensity of the electromagnetic coil can vary from a few milliamperes to several amperes, and the specific value depends on the required magnetic field strength. The electromagnetic coil located in the center is input with a larger current (for example, 800 mA), while the remaining electromagnetic coils away from the central electromagnetic coil are in the weak magnetic area and a smaller current (for example, 100 mA), the area where the workpiece has a higher surface roughness needs to increase the magnetic field strength to ensure uniform processing. By applying different phases (such as 0 degrees, 90 degrees, and 180 degrees) between multiple adjacent electromagnetic coils, each electromagnetic coil can generate a different magnetic field direction. The phase difference is used to control the current of the electromagnetic coil. By changing the phase difference, the current can be used to achieve alternating polymerization, form a magnetic field in a specific direction, and strengthen or weaken the magnetic field effect in the local area. The magnetic field is used to change the movement direction and speed of ions in the electrolyte to optimize the distribution of current during the polishing process. The electric field and the magnetic field are alternately applied at a certain frequency to affect the ion distribution and electrolyte flow on the surface of the workpiece, thereby achieving more uniform material removal, which can not only improve the polishing efficiency, but also reduce the local over-corrosion of the material, and help solve the problem of inconsistent polishing effects. It is particularly suitable for processing complex microstructures; the spindle system unit, the electrolytic cell 4, the magnetic field generator and the cleaning tank 7 are all arranged inside the cabinet 1, and the cabinet 1 is provided with a switch door and a control panel. The control panel is electrically connected to the controller. The control panel is provided with a display screen and control buttons for controlling the operation of the control device. A roller is provided at the bottom of the cabinet 1.

[0030] A high magnetic permeability component is arranged around the cathode. The high magnetic permeability component is made of iron, nickel and their alloys. Large or thick magnetic conductive materials (such as iron and nickel) are arranged around the workpiece where the magnetic field needs to be strengthened, such as placing a discus around a specific electromagnetic coil to achieve a predetermined magnetic field direction, concentrate the magnetic field on a specific area of ​​the workpiece, and apply a stronger magnetic field to the surface of the workpiece, thereby enhancing the reaction rate, improving the polishing quality, and ensuring the surface smoothness. According to the needs, multiple small pieces of magnetic conductive materials are placed in the surrounding area of ​​the workpiece away from the fixture, and multiple magnetic conductive material points are dispersedly arranged to create magnetic fields of different widths. The non-uniformity of the magnetic field can be controlled in a larger area to meet the polishing needs of complex curved surfaces. The shape and structural design of the cathode can guide the flow of magnetic lines of force, so that the magnetic field strength in some areas is strengthened (concentrated) while that in other areas is weakened (dispersed). The high magnetic permeability component adopts a conical structure, which can concentrate the magnetic field at one end and diffuse the magnetic field at the other end. Proper design can form the required non-uniform magnetic field distribution, which is conducive to further ensuring the uniformity and efficiency of the polishing effect, making the magnetic field strength in some areas higher, thereby affecting the chemical reaction rate.

[0031] The Z-axis linear module 3 and the Y-axis linear module 2 are both screw slider modules. In order to improve the movement stability of the screw slider module, corresponding guide rails can also be set so that the slider moves linearly along the guide rails. The Z-axis linear module 3 is vertically installed on the slider of the Y-axis linear module 2. The Z-axis linear module 3 and the Y-axis linear module 2 can drive and control the Y-axis and Z-axis movement position of the workpiece.

[0032] The Z-axis linear module 3 and the Y-axis linear module 2 may also adopt an electric push rod structure, and the Z-axis and Y-axis movement position control of the spindle is achieved through the electric push rod.

[0033] In this embodiment, the electrolytic cell 4 is provided with a liquid inlet pipe and a liquid discharge pipe. The liquid discharge pipe is connected to a collecting device for collecting magnetic abrasive particles. The collecting device is connected to the liquid inlet pipe via a circulation pump.

[0034] In this embodiment, a stirrer is installed inside the electrolytic tank 4, and the inner wall of the electrolytic tank 4 is sprayed with an anti-rust and anti-corrosion coating. The arrangement of the stirrer can make the magnetic abrasive and the electrolyte mix more evenly. Of course, in order to protect the stirrer and the electrolytic tank 4, an anti-rust treatment such as electroplating such as nickel plating and chrome plating can also be used on their surfaces.

[0035] In this embodiment, the cathode is hung around the electrolytic cell 4 by hooks.

[0036] In this embodiment, the cleaning component includes a spray pipe and a spray head. A cleaning liquid and a pump are provided in the cleaning tank. The spray head is connected to the spray pipe, and the spray pipe is connected to the pump. The cleaning liquid is deionized water or ethanol. In order to facilitate intelligent spraying, a sensor for sensing the arrival of the workpiece can also be provided on the cleaning tank. The sensor type includes but is not limited to a laser sensor. When the sensor detects that the workpiece has arrived at the cleaning tank, the sensor sends a sensing signal to the controller. The controller receives the signal, processes it, and outputs a control signal to the pump and the spray head to spray and clean the workpiece. The spray time of the spray head can be set according to demand.

[0037] In this embodiment, the cleaning component is an ultrasonic cleaner, which can clean the workpiece more thoroughly through ultrasonic cleaning.

[0038] In this embodiment, a liquid level sensor is provided in the cleaning tank 7, and the cleaning tank is provided with a drain port and a liquid filling port. Both the drain port and the liquid filling port are provided with control valves. When the liquid level in the cleaning tank exceeds a predetermined position, the control valve of the drain port is opened to discharge the liquid. When the liquid level in the cleaning tank is lower than the predetermined position, the control valve of the liquid filling port is opened to replenish the cleaning liquid.

[0039] In this embodiment, the device also includes a drying device, which includes a hair dryer. The drying device is used to dry the workpiece after cleaning. The hair dryer can be set individually or in multiples to quickly dry the workpiece.

[0040] In this embodiment, a pH sensor, a conductivity sensor, and a current sensor electrically connected to the controller are provided in the electrolytic cell 4 so as to monitor the pH value, conductivity, current density and other parameters of the electrolyte in real time, and automatically adjust the applied voltage and current according to the detected values.

[0041] In this embodiment, the electrolyte is prepared by one or more of NaCl, NaNO3, NaClO3, disodium ethylenediaminetetraacetic acid, sodium metasilicate, sodium hexametaphosphate, glacial acetic acid, citric acid, oxalic acid, anhydrous ethanol, ethylene glycol, propylene glycol, butylene glycol, glycerol, and triethanolamine and deionized water, and the magnetic abrasive is one or more of carbonyl iron powder, Fe3O4 abrasive, iron boron abrasive, chromium iron abrasive, and tungsten abrasive, and the particle size of the magnetic abrasive is 400#-1000#.

[0042] Working process of the present invention: When the immersion magnetic field assisted electrochemical mechanical polishing device of the additive manufacturing space lattice is working, In the first step, the electrolyte and magnetic abrasive particles are mixed and poured into the electrolytic tank. The mixture is more evenly mixed under the action of the stirrer. The additive manufacturing spatial lattice sample workpiece to be processed is fixedly mounted on the fixture. The working state of the Z-axis linear module and the Y-axis linear module is adjusted by the controller to adjust the spatial movement position of the workpiece so that the workpiece is immersed in the electrolyte in the electrolytic tank. The spindle motor is started, and the spindle motor drives the workpiece to rotate after working. The second step is to start the magnetic field: turn on the power supply connected to the electromagnetic coil, adjust the current intensity and phase of the electromagnetic coils at different positions, and generate an uneven magnetic field distribution inside the electrolytic cell; select a suitable cathode shape according to the shape and size of the workpiece to be polished, and place multiple small pieces of magnetic conductive materials on the cathode to create a magnetic field of different widths, which can control the non-uniformity of the magnetic field in a larger area; at the same time, the high-speed movement of the magnetic abrasive particles in the magnetic field plays a role in removing the residues produced by corrosion, thereby achieving the polishing requirements for complex curved surfaces; The third step is to start electrolysis and perform electrochemical mechanical composite polishing: connect the positive and negative electrodes of the power supply to the additive manufacturing space lattice sample workpiece and the cathode respectively, set the voltage and current parameters through the control panel of the controller, turn on the electrolysis switch, and generate an electrolytic reaction between the cathode and the anode. Under the dual effects of electrolysis and magnetic field, the sample surface is electrochemically corroded; Step 4: Clean up after completion: When the designed shape is reached, turn off the power switch and cut off the power to the electromagnetic coil. The workpiece enters the cleaning station and the drying station in turn. The cleaning liquid in the cleaning tank is ejected by the nozzle to clean the residue on the surface of the workpiece to be polished. After cleaning, the hair dryer blows air to the surface of the workpiece to make its surface dry. Finally, it is tested to determine whether the morphology meets the design requirements. If further processing is required, return to the second step to continue the operation until the morphology meets the design requirements.

[0043] The spindle motor rotates at a speed of 60 rpm to make the electrochemical mechanical polishing more uniform. The spatial lattice lattice of the additive manufacturing spatial lattice sample workpiece to be processed is a BCC lattice sample designed to contain 4×4×4 units, and the size of the structural unit is fixed to 5×5×5 mm. 3 , which is made of TC4 titanium alloy powder by selective laser melting. The spatial lattice lattice of additive manufacturing is used for preliminary surface morphology measurement using white light interferometry and scanning electron microscope (SEM). The original roughness and surface morphology results are as follows: Figure 5 As shown in Figure 2, the surface roughness is 41.582–69.658 µm, and there are a lot of defects such as unmelted powder on the surface, and the lattice structure is not obvious; the surface roughness and surface morphology of the additively manufactured spatial lattice lattice after magnetic field-assisted electrochemical mechanical polishing are shown in Figure 2. Figure 6As shown in the figure, after polishing, surface defects such as unmelted powder are basically removed, the surface uniformity of the workpiece is improved, and the surface roughness is reduced to 17.469-22.800µm.

[0044] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims

1. An immersion magnetic field assisted electrochemical mechanical polishing device for additive manufacturing spatial lattice lattices, characterized in that ,include: The spindle system unit includes a Z-axis linear module, a Y-axis linear module, a spindle motor, and a spindle. The Z-axis linear module is mounted on the Y-axis linear module, and the spindle motor is mounted on the Z-axis linear module. The output end of the spindle motor is connected to the spindle. The spindle is mounted with a fixture for clamping a workpiece, and the fixture or the workpiece is connected to the positive pole of the power supply. An electrolytic cell, wherein the electrolytic cell is filled with electrolyte and magnetic abrasive particles, and the electrolytic cell is provided with a cathode for connecting to a negative electrode of a power supply; A magnetic field generator, wherein the magnetic field generator comprises a plurality of electromagnetic coils, which are sleeved on the outside of the electrolytic cell, and the intensity and direction of the magnetic field generated are adjusted by changing the current and phase of each electromagnetic coil, so that a magnetic field with a specific direction is formed inside the electrolytic cell; A high magnetic permeability component is arranged around the cathode or around the workpiece that needs to strengthen the magnetic field, thereby regulating the non-uniformity of the magnetic field inside the electrolytic cell, and achieving uniform polishing of the workpiece surface by adjusting the non-uniformity of the magnetic field to affect the flow of electrolyte and magnetic abrasive particles; A cleaning tank, wherein a cleaning component for cleaning a workpiece is arranged in the cleaning tank; A controller is used to control the working state of the Z-axis linear module, the Y-axis linear module, the spindle motor, and the magnetic field generator, as well as the current and phase flowing to the electromagnetic coil, and the electric field current between the anode and the cathode.

2. The immersion magnetic field assisted electrochemical mechanical polishing device for additive manufacturing spatial lattice lattices according to claim 1, characterized in that: The electrolytic cell is provided with a liquid inlet pipe and a liquid discharge pipe, the liquid discharge pipe is connected to a collecting device, the collecting device is used to collect magnetic abrasive particles, and the collecting device is connected to the liquid inlet pipe through a circulating pump.

3. The immersion magnetic field assisted electrochemical mechanical polishing device for additive manufacturing spatial lattice lattices according to claim 1, characterized in that: A stirrer is installed inside the electrolytic tank, and the inner wall of the electrolytic tank is sprayed with an anti-rust and anti-corrosion coating.

4. The immersion magnetic field assisted electrochemical mechanical polishing device for additive manufacturing spatial lattice lattices according to claim 1, characterized in that: The cathode is hung around the electrolytic cell by hooks.

5. The immersion magnetic field assisted electrochemical mechanical polishing device for additive manufacturing spatial lattice lattices according to claim 1, characterized in that: The cleaning component comprises a spray pipe and a spray head. Cleaning liquid and a pump are arranged in the cleaning tank. The spray head is connected to the spray pipe, and the spray pipe is connected to the pump.

6. The immersion magnetic field assisted electrochemical mechanical polishing device for additive manufacturing spatial lattice lattices according to claim 1, characterized in that: The cleaning component is an ultrasonic cleaner.

7. The immersion magnetic field assisted electrochemical mechanical polishing device for additive manufacturing spatial lattice lattices according to claim 1 or 5, characterized in that: A liquid level sensor is arranged in the cleaning tank, and the cleaning tank is provided with a liquid discharge port and a liquid filling port, and both the liquid discharge port and the liquid filling port are provided with control valves.

8. The immersion magnetic field assisted electrochemical mechanical polishing device for additive manufacturing spatial lattice lattices according to claim 1, characterized in that: It also includes a drying device, which includes a hair dryer and is used to dry the cleaned workpiece.

9. The immersion magnetic field assisted electrochemical mechanical polishing device for additive manufacturing spatial lattice lattices according to claim 1, characterized in that: The electrolytic cell is provided with a pH sensor, a conductivity sensor and a current sensor which are electrically connected to the controller.

10. The immersion magnetic field assisted electrochemical mechanical polishing device for additive manufacturing spatial lattice lattices according to claim 1, characterized in that: The electrolyte is prepared by one or more of NaCl, NaNO3, NaClO3, disodium ethylenediaminetetraacetate, sodium metasilicate, sodium hexametaphosphate, glacial acetic acid, citric acid, oxalic acid, anhydrous ethanol, ethylene glycol, propylene glycol, butylene glycol, glycerol, triethanolamine and deionized water; the magnetic abrasive is one or more of carbonyl iron powder, Fe3O4 abrasive, iron boron abrasive, chromium iron abrasive and tungsten abrasive; and the particle size of the magnetic abrasive is 400#-1000#.

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