Dynamic electrochemical corrosion platform based on motor driving

Abstract

The utility model relates to the technical field of electrochemical corrosion processing, and particularly discloses a dynamic electrochemical corrosion platform based on motor driving, which comprises a clamp, a rotating device, a vertical conveying device, a container, a power supply and a control device, the clamp is used for clamping a tungsten rod to be corroded; the rotating device is used for driving the clamp to rotate; the vertical conveying device is used for driving the rotating device to move up and down; the container is used for storing electrolyte, and a cathode is arranged in the container; the power supply is configured to be connected with the tungsten rod and the cathode; the vertical conveying device and the rotating device are both configured to be electrically connected with the control device. An ampere meter is also arranged between the power supply and the cathode; the container is positioned below the clamp; the dynamic electrochemical corrosion platform based on motor driving is low in cost, the manufacturing efficiency of the tungsten needle emitter is high, and no residual stress is generated.

Description

Technical Field

[0001] The utility model relates to the technical field of electrochemical corrosion processing, in particular to a dynamic electrochemical corrosion platform driven by a motor. Background Art

[0002] Field emission electric thrusters have high specific impulse, precise thrust, simple structure, and can generate tiny and precise impulses, which can meet the orbital maneuvers, attitude control and other mission requirements of micro-nano satellites. The core component of field emission electric thrusters is the emitter. Driven by a strong electric field, the top of the emitter will continuously emit charged particles to generate thrust. The conical needle-shaped emitter is one of the main types of emitters, and its tip is sharp, which is conducive to improving the overall performance of field emission electric thrusters.

[0003] At present, the main manufacturing technologies of emitters are divided into mechanical processing and electrochemical corrosion processing. Mechanical processing has low precision and its shape is difficult to control; the traditional electrochemical corrosion method has low cost, high efficiency, good effect, and greater application value. For this reason, an electrochemical corrosion platform has been developed to meet the needs of making emitters. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a dynamic electrochemical corrosion platform based on motor drive, wherein the prepared emitter has good rotational symmetry, low preparation cost, high preparation efficiency and will not generate residual stress.

[0005] In order to solve the above problems, the utility model adopts the following technical solutions:

[0006] A dynamic electrochemical corrosion platform based on motor drive comprises: a fixture, a rotating device, a vertical conveying device, a container, a power supply and a control device.

[0007] The fixture is used to clamp the tungsten rod to be corroded.

[0008] The rotating device is used to drive the clamp to rotate.

[0009] The vertical conveying device is used to drive the rotating device to move up and down.

[0010] The container is used to store electrolyte, and a cathode is arranged in the container.

[0011] The power supply is configured to be connected to the tungsten rod and the cathode.

[0012] The vertical conveying device and the rotating device are both configured to be electrically connected to the control device.

[0013] An ammeter is also arranged between the power supply and the cathode.

[0014] The container is located below the clamp.

[0015] The motor-driven dynamic electrochemical corrosion platform provided in at least one embodiment of the present disclosure further includes a displacement platform, which is arranged below the fixture.

[0016] The container is carried on the displacement platform, and the displacement platform is used to drive the container to move.

[0017] In the motor-driven dynamic electrochemical corrosion platform provided in at least one embodiment of the present disclosure, the cathode is arranged in a ring shape, and the inner diameter of the cathode is larger than the outer diameter of the tungsten rod.

[0018] The motor-driven dynamic electrochemical corrosion platform provided in at least one embodiment of the present disclosure further includes: a frame; the vertical conveying device is configured to be fixedly connected to the frame, and the vertical conveying device drives the frame to move up and down.

[0019] The rotating device is fixedly arranged on the frame.

[0020] The clamp is configured to be rotatably connected to the frame, a belt transmission component is provided between the clamp and the rotating device, and the clamp and the rotating device are linked through the belt transmission component.

[0021] The motor-driven dynamic electrochemical corrosion platform provided in at least one embodiment of the present disclosure further includes: a fixing device; the fixing device is configured to be fixedly connected to the cathode to fix the position of the cathode in the container.

[0022] The motor-driven dynamic electrochemical corrosion platform provided in at least one embodiment of the present disclosure further includes a computer, and the ammeter is configured to be connected to the computer.

[0023] In the motor-driven dynamic electrochemical corrosion platform provided in at least one embodiment of the present disclosure, the vertical conveying device is a linear electric guide rail.

[0024] The utility model has the beneficial effects that vertical reciprocating motion and rotational motion can be performed simultaneously in the process of electrochemical etching to process the emitter, and a continuous conical needle body can be processed by vertical motion to ensure that the tip radius meets the requirements.

[0025] The rotational motion can be used to remove bubbles attached to the surface of the material to be processed, improve the flatness of the emitter surface, and ensure the rotational symmetry of the emitter.

[0026] The operation is simple, the cost is low, the efficiency is high, and no residual stress is generated. Compared with the traditional electrochemical processing, the solid metal emitter of the utility model has a smoother morphology, especially for the porous metal emitter with more application value. The traditional electrochemical processing cannot obtain an emitter with a smooth morphology and controllable tip size, while the utility model can efficiently perform controllable processing on solid and metal emitters. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 This is a schematic structural diagram of a motor-driven dynamic electrochemical corrosion platform of the utility model.

[0029] In the figure:

[0030] 10. Clamp;

[0031] 20. Rotating device;

[0032] 30. Vertical conveying device;

[0033] 40. container; 41. cathode;

[0034] 50. Power supply;

[0035] 60. Belt drive components;

[0036] 70. Displacement platform;

[0037] 80. Rack;

[0038] 90. Ammeter;

[0039] 100. Fixing device;

[0040] 110. Computer. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments will be described clearly and completely below in conjunction with the drawings in the embodiments. Obviously, the described embodiments are only a part of the embodiments, rather than all the embodiments.

[0042] The main principle of the motor-driven dynamic electrochemical corrosion platform in the embodiment is to use a tungsten rod as an anode, a stainless steel ring as a cathode, and an alkaline solution (such as NaOH) as an electrolyte to corrode the tungsten rod to make an emitter, and during the corrosion process, the tungsten rod is moved up and down and rotated in the electrolyte to optimize the needle making effect.

[0043] like Figure 1 As shown, this embodiment provides a motor-driven dynamic electrochemical corrosion platform, including a fixture 10, a rotating device 20, a vertical conveying device 30, a container 40, a power supply 50, a control device (not shown), a displacement platform 70 and a frame 80. The container 40 is located below the fixture 10.

[0044] Specifically, the fixture 10 is used to hold the tungsten rod to be corroded. The rotating device 20 is used to drive the fixture 10 to rotate. The vertical conveying device 30 is used to drive the rotating device 20 to move up and down. The container 40 is used to store the electrolyte, and the cathode 41 is configured in the container 40.

[0045] By utilizing the vertical conveying device 30 to drive the fixture 10 and the tungsten rod to move vertically, a continuous conical needle body can be processed to ensure that the tip radius meets the requirements.

[0046] By using the rotating device 20 to drive the tungsten rod and the fixture 10 to rotate, bubbles attached to the surface of the material to be processed can be removed, the flatness of the emitter surface can be improved, and the rotational symmetry of the emitter can be ensured.

[0047] Specifically, the tungsten rod and cathode 41 are connected to the positive and negative electrodes of the power supply 50 through wires. The power supply 50 is a DC power supply with a range of 30V5A and an accuracy of 1mV, 1mA. The tungsten rod and cathode are powered through wires.

[0048] Specifically, the vertical conveying device 30 and the rotating device 20 are both configured to be electrically connected to the control device.

[0049] Specifically, an ammeter 90 is further provided between the power source 50 and the cathode 41 .

[0050] In this embodiment, the displacement platform 70 is disposed below the fixture 10 , and the container 40 is mounted on the displacement platform 70 . The displacement platform 70 is used to drive the container 40 to move.

[0051] Exemplarily, the displacement platform 70 is an XY-axis manual displacement platform, which can adjust the position of the container 40 so that the tungsten electrode is aligned with the center of the cathode 41 .

[0052] In this embodiment, the cathode 41 is arranged in a ring shape, and the inner diameter of the cathode 41 is larger than the outer diameter of the tungsten rod.

[0053] By way of example, the cathode 41 is made of a stainless steel ring.

[0054] In this embodiment, the vertical conveying device 30 is configured to be fixedly connected to the frame 80 , the vertical conveying device 30 drives the frame 80 to move up and down, and the rotating device 20 is fixedly configured on the frame 80 .

[0055] The clamp 10 is configured to be rotatably connected to the frame 80 , and a belt transmission component 60 is provided between the clamp 10 and the rotating device 20 , and the clamp 10 and the rotating device 20 are linked through the belt transmission component 60 .

[0056] In this embodiment, the motor-driven dynamic electrochemical corrosion platform further includes a fixing device 100; the fixing device 100 is configured to be fixedly connected to the cathode 41, and the fixing device 100 fixes the cathode 41 in the container 40, and the cathode 41 does not contact the container.

[0057] In this embodiment, the motor-driven dynamic electrochemical corrosion platform further includes a computer 110, and the ammeter 90 is configured to be connected to the computer 110. The ammeter is connected in series between the power supply and the cathode to collect the current signal of the circuit with an accuracy of 0.1 mA and data is collected once every 10 ms. The signal can be collected in real time for the computer to draw a current signal curve graph.

[0058] In this embodiment, the vertical conveying device 30 adopts a linear electric guide rail; the rotating device 20 adopts a servo motor, and the speed of the servo motor is adjustable within the range of 0-800r / min.

[0059] The working method of the motor-driven dynamic electrochemical corrosion platform in the embodiment will be disclosed below, and the working principle of the motor-driven dynamic electrochemical corrosion platform in the embodiment will be further explained.

[0060] The working method of machining a solid tungsten rod emitter includes the following steps:

[0061] Before processing, the solid tungsten rod has a diameter of 0.5mm and a length of 20mm. The solid tungsten rod is fixed by a clamp and ensured to be vertically downward;

[0062] The position of the solid tungsten rod is adjusted by the displacement platform so that the solid tungsten rod is aligned with the center of the cathode 41;

[0063] The solid tungsten rod is moved downward by the vertical conveyor until it just touches the electrolyte in the container, and the position of the vertical conveyor is recorded.

[0064] Start the rotating device and reach a speed of 600r / min, then start the vertical conveying device and the power supply at the same time. At this time, the voltage of the solid tungsten rod is set to 5V, so that the electrolytic cell starts to work when the solid tungsten rod starts to reciprocate up and down;

[0065] Observe the current curve on the computer, the number of reciprocating times on the controller, and the corrosion of the solid tungsten rod until the end of the solid tungsten rod becomes smooth and conical.

[0066] Although the embodiments of the present application have been shown and described above, the scope of protection of the present invention is not limited thereto, and any changes or substitutions that are not conceivable through creative work should be included in the scope of protection of the present invention; unless explicitly stated, any element, action or instruction used in this document should not be interpreted as critical or necessary.

Claims

1. A dynamic electrochemical corrosion platform based on motor drive, characterized in that: include: A fixture for holding the tungsten rod to be corroded; A rotating device, used to drive the clamp to rotate; A vertical conveying device, used to drive the rotating device to move up and down; A container for storing an electrolyte, wherein a cathode is disposed in the container; a power source configured to be connected to the tungsten rod and the cathode; and A control device, the vertical conveying device and the rotating device are configured to be electrically connected to the control device; Wherein, an ammeter is also provided between the power supply and the cathode; The container is located below the clamp.

2. A motor-driven dynamic electrochemical corrosion platform according to claim 1, characterized in that: Also included: A displacement platform is arranged below the fixture; Wherein, the container is carried on the displacement platform, and the displacement platform is used to drive the container to move.

3. The motor-driven dynamic electrochemical corrosion platform according to claim 1, characterized in that: The cathode is arranged in a ring shape, and the inner diameter of the cathode is greater than the outer diameter of the tungsten rod.

4. The motor-driven dynamic electrochemical corrosion platform according to claim 1, characterized in that: Also includes: rack; The vertical conveying device is configured to be fixedly connected to the frame, and the vertical conveying device drives the frame to move up and down; The rotating device is fixedly arranged on the frame; The clamp is configured to be rotatably connected to the frame, a belt transmission component is provided between the clamp and the rotating device, and the clamp and the rotating device are linked through the belt transmission component.

5. The motor-driven dynamic electrochemical corrosion platform according to claim 3 is characterized in that: Also includes: Fixtures; The fixing device is configured to be fixedly connected to the cathode to fix the position of the cathode in the container.

6. The motor-driven dynamic electrochemical corrosion platform according to claim 1, characterized in that: A computer is also included, and the ammeter is configured to be connected to the computer.

7. The motor-driven dynamic electrochemical corrosion platform according to claim 1, characterized in that: The vertical conveying device is a linear electric guide rail.

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