An integrated electrochemical additive and subtractive material manufacturing automatic pen device and its processing method

Abstract

The present invention relates to an integrated electrochemical additive and subtractive material manufacturing automatic pen device and a processing method thereof. The device comprises an insulating housing, the insulating housing including a truncated cone-shaped pen tip and a cylindrical pen holder; an insulating film disposed on the pen tip of the insulating housing, the front end of the insulating film coated with a conductive coating; a hollow metal pen core disposed within the insulating housing, the front end of the hollow metal pen core connected to a processing fluid filler, and the rear end of the hollow metal pen core connected to a hollow pen core piston; a built-in power supply is disposed on the inner wall between the insulating housing and the hollow metal pen core for power supply, the processing fluid filler connected to the pen cap housing, the built-in power supply integrates a metal wire, the metal wire connects the conductive coating and the hollow metal pen core, and the insulating film and the conductive coating wrap around to form an interelectrode region. The present invention uses the insulating film on the pen tip of the electrochemical machining pen to limit stray corrosion at the source by means of flow field restriction, greatly improving the processing accuracy of electrochemical additive and subtractive material manufacturing.

Description

Technical Field

[0001] The present invention relates to the technical field of electrochemical machining, in particular to an integrated electrochemical additive and subtractive material manufacturing automatic pen device and a machining method thereof. Background Art

[0002] Existing electrochemical and micro-electrochemical machining (ECM) equipment is essentially a large, dedicated horizontal or vertical ECM machine. However, both traditional immersion machining and the emerging fluid jet machining suffer from certain ECM drawbacks: stray corrosion and deposition. Furthermore, existing large-scale machining equipment cannot achieve convenient, fast, and anywhere machining capabilities. While ECM samples offer advantages such as high surface finish and freedom from thermal and mechanical damage, they suffer from low precision due to difficulties in controlling the inter-electrode flow and electric fields. Consequently, existing ECM methods are largely incapable of high-precision machining. However, given that ECM (electrochemical additive and subtractive machining) utilizes the principle of ionic material removal and deposition in cathode deposition and anodic etching, ECM theoretically offers the potential for high-precision, high-surface quality machining. The most important means of improving machining accuracy is to limit the chaotic and difficult-to-control flow and electric fields between the machining electrodes.

[0003] To this end, we propose an integrated electrochemical additive and subtractive manufacturing automatic pen device and its processing method. Summary of the Invention

[0004] In response to the shortcomings of the above-mentioned existing production technologies, the applicant provides an integrated electrochemical additive manufacturing automatic pen device and a processing method thereof, thereby using the electrochemically processed pen tip insulating film to limit its stray corrosion from the source in a flow field-limiting manner, greatly improving the processing accuracy of electrochemical additive manufacturing.

[0005] The technical solutions adopted in the present invention are as follows:

[0006] An integrated electrochemical additive and subtractive manufacturing automatic pen device, comprising:

[0007] The insulating shell comprises a frustum-shaped pen head and a cylindrical pen body;

[0008] An insulating film is provided at the pen tip of the insulating shell, and a conductive coating is applied to the front end of the insulating film;

[0009] The hollow metal pen core is arranged in the insulating shell, the head end of the hollow metal pen core is connected to the processing liquid filler, and the tail end of the hollow metal pen core is connected to the hollow pen core piston;

[0010] Among them, a built-in power supply is set on the inner wall between the insulating shell and the hollow metal pen core for power supply, the processing fluid filler is connected to the pen cap shell, the built-in power supply integrates a metal wire, the metal wire connects the conductive paint and the hollow metal pen core, and the insulating film and the conductive paint are wrapped to form an inter-electrode area.

[0011] It is further characterized by:

[0012] A hollow partition is provided at one end of the insulating shell away from the pen tip, and the hollow metal pen core is arranged in the hollow partition.

[0013] The pen cap shell is made of non-metallic material, and the insulating shell is made of plastic.

[0014] The pen head and the pen holder of the insulating shell are both connected to the hollow metal pen core.

[0015] The built-in power supply is connected to the corresponding positive and negative electrodes according to the requirements of electrochemical additive and subtractive material manufacturing, and the built-in power supply voltage is 1.5V.

[0016] The hollow core piston includes a hollow core piston rod and a hollow core spring. The hollow core piston rod is connected to a processing fluid filler for controlling the supply of electrochemical additive and subtractive material processing fluid.

[0017] The conductive coating is connected to the electrochemical additive and subtractive machining fluid and the workpiece being machined, ensuring a complete electrochemical additive and subtractive machining path.

[0018] The conductive coating is a highly wear-resistant conductive coating.

[0019] The present invention also discloses a processing method for manufacturing an automatic pen device by using an integrated electrochemical additive and subtractive method, comprising the following steps:

[0020] S1: Determine the polarity of the electrochemical additive manufacturing automatic pen device and select the corresponding processing fluid according to manufacturing requirements;

[0021] S2: Determine the amount of machining fluid introduced into the hollow metal pen core based on the amount of additive and subtractive manufacturing processing;

[0022] S3: Use the machining fluid filler to control the amount of machining fluid in and out, and replenish the machining fluid in time according to the machining time;

[0023] S4: An electrochemical machining circuit is formed by connecting the two electrochemical machining electrodes of the built-in power supply and the metal wire. A meniscus is formed around the insulating film of the pen tip. The conductive coating at the tip of the insulating film is connected to the metal wire to form a pathway. Electrochemical additive and subtractive manufacturing is performed on the substrate being processed in the same way as a person holding a pen and writing.

[0024] S5: Dynamically control the processing rate according to the speed at which people hold the pen and write, and obtain corrosion pits and deposition peaks of different degrees.

[0025] The corrosion voltage of the processed substrate in the subtractive mode is less than the maximum voltage of the built-in power supply.

[0026] The beneficial effects of the present invention are as follows:

[0027] The present invention has a compact and reasonable structure and is easy to operate. The electrochemical additive and subtractive material manufacturing automatic pen device has built-in integrated positive and negative electrodes, which can realize controllable electrochemical additive and subtractive material manufacturing of metal substrates. In order to solve the problem of poor processing accuracy caused by serious stray corrosion / deposition in the electrochemical processing field, the electrochemical processing pen tip insulating film is used to limit its stray corrosion from the source in a flow field-limiting manner, thereby greatly improving the processing accuracy of electrochemical additive and subtractive material manufacturing.

[0028] At the same time, the present invention also has the following advantages:

[0029] (1) The pen cap shell is a switch device, and the overflow amount of the electrochemical additive manufacturing fluid is manually controlled through the pen cap shell.

[0030] (2) The ECM machining rate and the amount of ECM removal / deposition are dynamically determined by the operator's sweeping speed. The curved liquid surface formed by the insulating film is the machining space for ECM, and the characteristic dimension of the machining trace is the diameter of the insulating film.

[0031] (3) The total thickness of the conductive coating and the insulating film is the total length of the inter-electrode region in electrochemical additive manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is the overall outline diagram of the automatic pen of the present invention.

[0033] Figure 2 It is a half-section schematic diagram of the automatic pen of the present invention.

[0034] Figure 3 It is a schematic cross-sectional view of the automatic pen of the present invention.

[0035] Among them: 1. Conductive coating; 2. Insulating film; 3. Insulating shell; 4. Built-in power supply; 5. Hollow metal refill; 6. Hollow partition; 7. Pen cap shell; 8. Pen tip spring; 9. Hollow refill piston; 10. Hollow refill spring; 11. Metal wire; 12. Hollow refill piston rod; 13. Processing fluid filler. DETAILED DESCRIPTION

[0036] The specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0037] like Figure 1-Figure 3As shown, an integrated electrochemical additive and subtractive material manufacturing automatic pen device includes an insulating shell 3, the insulating shell 3 includes a truncated cone-shaped pen head and a cylindrical pen body, the pen head of the insulating shell 3 is provided with an insulating film 2, the front end of the insulating film 2 is coated with a conductive coating 1, the end of the insulating shell 3 away from the pen tip is provided with a hollow partition 6, the hollow partition 6 is provided with a hollow metal pen core 5, the head end of the hollow metal pen core 5 is connected to a processing fluid filler 13, the tail end of the hollow metal pen core 5 is connected to the hollow pen core piston 9, the processing fluid filler 13 is connected to the pen cap shell 7, the hollow pen core piston 9 includes a hollow pen core piston rod 12 and a hollow pen core spring 10, the hollow pen core piston rod 12 is connected to the processing fluid filler 13, which is used for piston fluid supply, and a built-in power supply 4 is provided on the inner wall between the insulating shell 3 and the hollow metal pen core 5 for power supply. The built-in power supply 4 integrates a metal wire 11, which connects the conductive coating 1 to the hollow metal refill 5. The frustum-shaped pen tip forms the inter-electrode region formed by the insulating film 2 and the conductive coating 1. The remaining portion of the hollow metal refill 5 is used to store electrochemical machining fluid. A pen tip spring 8 is located within the insulating housing 3.

[0038] The pen cap housing 7 is made of non-metallic material, while the insulating housing 3 is plastic. The built-in power supply 4 is connected to the corresponding positive and negative electrodes according to the requirements of electrochemical additive manufacturing. The voltage of the built-in power supply 4 is 1.5V. The pen tip and pen barrel of the insulating housing 3 are both connected to the hollow metal refill 5. The pen tip of the insulating housing 3 has an insulating film 2 as the pen tip, and the hollow cone of the pen tip serves as a storage container for the processing fluid. The insulating housing 3 serves as the outer shell of the pen tip.

[0039] The cap housing 7 serves as a switch, allowing manual control of the amount of EAM fluid flowing through it. The hollow metal refill 5 houses a hollow refill piston 9 and a hollow refill piston rod 12, which control the supply of EAM fluid. The EAM fluid is connected to the conductive coating 1 and the workpiece being processed, ensuring a complete EAM process. The conductive coating 1 is highly wear-resistant.

[0040] The total thickness of the conductive coating 1 and the insulating film 2 is the total length of the inter-electrode region in electrochemical additive manufacturing.

[0041] The overall appearance of the electrochemically added subtractive material manufacturing automatic pen device is similar to that of a mechanical pencil, with a pen head, a pen tip, a pen cap, a pen body, etc. as the main parts.

[0042] The outer diameter of the electrochemical subtractive material processing meniscus is the diameter of the area surrounded by the pen tip insulating film 2. The substrate to be processed by electrochemical subtractive material manufacturing is a conductive substrate such as stainless steel or brass that can be used for electrochemical subtractive material manufacturing.

[0043] The present invention also discloses a processing method for manufacturing an automatic pen device using an integrated electrochemical additive and subtractive method, comprising the following steps:

[0044] S1. Determine the polarity of the electrochemical additive manufacturing automatic pen device and select the corresponding processing fluid based on manufacturing requirements. Generally, CuSO4 is used for additive manufacturing and NaCl is used for subtractive manufacturing.

[0045] S2 is determined according to the amount of processing material manufacturing process to introduce the hollow metal refill 5 within the processing fluid volume;

[0046] S3 using the machining fluid filler 13 to control the amount of machining fluid, according to the machining time to replenish the machining fluid;

[0047] S4. The electrochemical machining electrodes connected to the built-in power supply 4 and the metal wire 11 form an electrochemical machining circuit. The insulating film 2 of the pen tip forms a meniscus. The conductive coating 1 at the tip of the insulating film 2 is connected to the metal wire 11 to form a path. Electrochemical additive manufacturing is performed on the substrate being processed in the same way as a person holding a pen and writing.

[0048] S5. Dynamically control the processing speed according to the speed at which the person holds the pen and writes, thereby obtaining corrosion pits or deposition peaks of varying degrees.

[0049] The etching voltage of the substrate being processed in the subtractive mode is lower than the maximum voltage of the built-in power supply 4 .

[0050] The polarity of the built-in power supply 4 is determined by the connection method of the metal wires 11 , and the output voltage of the built-in power supply 4 is determined by external processing requirements.

[0051] The electrochemical subtractive machining rate and the electrochemical machining removal / deposition amount are dynamically determined by the processor's pen sweep rate.

[0052] The curved liquid surface formed around the insulating film 2 is the processing space for electrochemical additive manufacturing, and the characteristic size of the generated processing trace is the diameter of the insulating film 2.

[0053] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. Any modifications may be made within the scope of protection of the present invention.

Claims

1. An integrated electrochemical additive and subtractive manufacturing automatic pen device, characterized in that: include: An insulating shell (3) includes a frustum-shaped pen head and a cylindrical pen holder; An insulating film (2) is arranged on the pen tip of the insulating shell (3), and a conductive coating (1) is applied to the front end of the insulating film (2); The hollow metal pen core (5) is arranged in the insulating shell (3), the head end of the hollow metal pen core (5) is connected to the processing liquid filler (13), and the tail end of the hollow metal pen core (5) is connected to the hollow pen core piston (9); A built-in power supply (4) is provided on the inner wall between the insulating shell (3) and the hollow metal pen core (5) for supplying power. A processing liquid filler (13) is connected to the pen cap shell (7). The built-in power supply (4) is integrated with a metal wire (11). The metal wire (11) connects the conductive coating (1) and the hollow metal pen core (5). The insulating film (2) and the conductive coating (1) are wrapped to form an inter-electrode region.

2. The integrated electrochemical additive manufacturing automatic pen device according to claim 1, characterized in that: A hollow partition (6) is provided at one end of the insulating shell (3) away from the pen tip, and the hollow metal pen core (5) is arranged in the hollow partition (6).

3. The integrated electrochemical additive manufacturing automatic pen device according to claim 1, characterized in that: The pen cap shell (7) is made of non-metallic material, and the insulating shell (3) is a plastic product.

4. The integrated electrochemical additive manufacturing automatic pen device according to claim 1, characterized in that: The pen head and the pen holder of the insulating shell (3) are both connected to the hollow metal pen core (5).

5. The integrated electrochemical additive manufacturing automatic pen device according to claim 1, characterized in that: The built-in power supply (4) is connected to corresponding positive and negative electrodes according to the requirements of electrochemical additive and subtractive material manufacturing, and the voltage of the built-in power supply (4) is 1.5V.

6. The integrated electrochemical additive manufacturing automatic pen device according to claim 1, characterized in that: The hollow refill piston (9) comprises a hollow refill piston rod (12) and a hollow refill spring (10); the hollow refill piston rod (12) is connected to a processing fluid filler (13) for controlling the supply of electrochemical additive and subtractive material processing fluid.

7. The integrated electrochemical additive manufacturing automatic pen device according to claim 1, characterized in that: The conductive coating (1) is connected to the electrochemical additive and subtractive machining fluid and the workpiece being machined, ensuring a complete electrochemical additive and subtractive machining path.

8. The integrated electrochemical additive manufacturing automatic pen device according to claim 7, characterized in that: The conductive coating (1) is a highly wear-resistant conductive coating.

9. A processing method for manufacturing an automatic pen device by using an integrated electrochemical additive and subtractive method, wherein the processing method comprises: The steps include: S1: Determine the polarity of the electrochemical additive manufacturing automatic pen device and select the corresponding processing fluid according to manufacturing requirements; S2: Determine the amount of machining fluid introduced into the hollow metal pen core (5) according to the amount of additive and subtractive manufacturing processing; S3: Use the machining fluid filler (13) to control the amount of machining fluid in and out, and replenish the machining fluid in time according to the machining time; S4: forming an electrochemical machining circuit based on the electrochemical machining two electrodes connected to the built-in power supply (4) and the metal wire (11), forming a curved liquid surface based on the insulating film (2) of the pen tip, connecting the conductive coating (1) at the tip of the insulating film (2) to the metal wire (11) to form a path, and performing electrochemical additive and subtractive manufacturing on the substrate to be processed in the manner of a person holding a pen and writing; S5: Dynamically control the processing rate according to the speed at which people hold the pen and write, and obtain corrosion pits and deposition peaks of different degrees.

10. The method for manufacturing an automatic pen device by an integrated electrochemical additive and subtractive method according to claim 9, characterized in that: The corrosion voltage of the processed substrate in the subtractive mode is less than the maximum voltage of the built-in power supply (4).

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