CN102101205A - Electrochemical processing device, processing method, and electrode unit thereof - Google Patents

Abstract

The invention relates to an electrochemical processing device, a processing method and an electrode unit thereof, which comprise an electrode, a magnetic conduction layer, a plurality of magnetic bodies and a magnetic control unit, wherein the magnetic control unit is used for processing at least one workpiece, the workpiece and the electrode are respectively positioned in an electrolyte, the magnetic conduction layer is formed on the surface of the external part of the electrode, the magnetic bodies are added into the electrolyte, the magnetic bodies are non-conductive, the magnetic control unit is coupled with the magnetic conduction layer and controls the magnetic conduction layer to absorb the magnetic bodies so that the magnetic bodies form an insulator to cover the magnetic conduction layer. Because the magnetic bodies are adsorbed by the control magnetic conduction layer, the thickness of the magnetic bodies adsorbed on the electrodes can be controlled, namely the thickness of the insulator is controlled, and therefore, the processing precision can be improved, and the processing cost can be saved.

Description

Electrochemical processing device, processing method, and electrode unit thereof

technical field

The present invention relates to a processing device and method, in particular to an electrochemical processing device and a processing method.

Background technique

Electrochemistry is a science that involves the relationship between electrons and chemical reactions, and the various properties and behaviors of electrons have not been gradually understood until the past century. Although electrochemistry is older than other sciences, its development is relatively delayed. However, in today's rising awareness of environmental protection, electrochemistry has become an "emerging" and highly anticipated science. Generally speaking, electrochemistry refers to the technology of chemical phenomena related to electricity, and explores the relationship between chemical reaction and charge transfer, and uses the potential of the power supply to adjust the surface electron energy of the electrode, so that electroactive species ) to transfer electrons to the electrode.

Based on this principle, electrochemical machining (electrochemical machining) has been developed, which is different from traditional machining methods. It is used to process extremely hard materials or materials or objects that are difficult to process by traditional machining methods. Electrochemical machining is also called electrolysis. processing. However, the limitation is that the processed object must be electrically conductive. When using electrochemical machining, the electrode is the cathode used as a tool, and the processing object is the anode, that is, the electrode and the processing object are respectively coupled to the cathode and anode of the power supply. The high current of the power supply passes through the electrolyte from the processing object to the electrode, so that the processing object can be processed and the unnecessary part of the processing object is removed. Electrochemical processing does not contact the processing object during the processing, and there is no electric spark generated, so it is quite safe.

It can be seen from the above description that the electrode is used as a machining tool to control the machining position and depth of the machining object. Generally speaking, if the electrode does not need to be processed relative to the workpiece, an insulating layer is formed to prevent the electrode from processing the workpiece. However, the thickness of the insulating layer will affect the processing accuracy of the electrode. Therefore, if the thickness of the insulating layer formed on the electrode is not properly controlled, the processing size of the workpiece will not meet the expectations. In this case, the original electrode must be discarded and replaced with a new one. Electrode and adjust the thickness of the insulating layer formed on the new electrode, so repeated adjustment of the thickness of the insulating layer will increase the processing cost, and it is difficult to control the processing accuracy. Therefore, how to improve the machining accuracy and save the machining cost is an important issue in the current electrochemical machining.

Therefore, the present invention proposes an electrochemical processing device and processing method and its electrode unit to address the above problems, which can not only improve the above-mentioned shortcomings of the prior art, but also improve processing accuracy and save processing costs, so as to solve the above problems.

Contents of the invention

One of the objectives of the present invention is to provide an electrochemical processing device and processing method and its electrode unit, which can control the thickness of the magnetic substance adsorbed on the electrode by controlling the magnetic force of the magnetic substance in the magnetic substance in the electrolyte. , and control the insulation thickness of the electrode, which can improve the processing accuracy and save the processing cost.

In order to achieve the above object, the present invention provides an electrochemical machining device, the

An electrochemical machining device is used to process at least one workpiece, and the electrochemical machining device includes:

A tank body has an electrolyte solution, wherein the workpiece is located in the electrolyte solution;

an electrode located in the electrolyte;

a magnetic conduction layer formed on a part of the surface of the electrode;

a plurality of magnetic bodies located in the electrolyte, and the magnetic bodies are non-conductive;

a magnetic force control unit, coupled to the magnetic permeable layer, and controls the magnetic permeable layer to attract the magnetic bodies, so that the magnetic bodies form an insulator, and the insulator covers the magnetic permeable layer; and

A power supply unit, the two poles of which are respectively coupled to the workpiece and the electrode.

In the present invention, the magnetic permeable layer covers the side surface of the electrode or the bottom surface of the electrode.

In the present invention, the magnetic permeable layer is made of nickel or iron.

In the present invention, each of the magnetic bodies further comprises:

a metal body; and

An insulating layer covers the outer surface of the metal body.

In the present invention, the metal body is a nickel ball or a steel ball.

In the present invention, the insulating layer is a ceramic, a resin or a plastic.

In the present invention, the magnetic control unit is a magnet or an electromagnet.

In the present invention, wherein the magnetic permeable layer includes a first pattern, the insulator includes a second pattern substantially identical to the first pattern, and the workpiece includes a third pattern corresponding to the second pattern.

The invention also discloses an electrochemical processing method, which includes the following steps:

providing a cell with an electrolyte;

disposing at least one workpiece in the electrolyte;

providing an electrode and a magnetically conductive layer, wherein the magnetically conductive layer is formed on a part of the surface of the electrode, and the electrode is located in the electrolyte;

adding a plurality of magnetic bodies into the electrolyte, and the magnetic bodies are non-conductive;

controlling the magnetic permeable layer to attract the magnetic substances, so that the magnetic substances form an insulator, and the insulator covers the magnetic permeable layer; and

The two poles of a power supply unit are respectively coupled to the workpiece and the electrode.

The invention also discloses an electrode unit for electrochemical machining, which includes:

an electrode;

a magnetic conduction layer formed on a part of the surface of the electrode;

a plurality of magnetic bodies, which are non-conductive; and

A magnetic force control unit is coupled to the magnetic permeable layer and controls the magnetic permeable layer to attract the magnetic bodies, so that the magnetic bodies form an insulator, and the insulator covers the magnetic permeable layer.

The present invention has beneficial effects. The electrochemical processing device and processing method and its electrode unit of the present invention include an electrode, a magnetic conduction layer, a plurality of magnetic bodies and a magnetic force control unit, and are used to process at least one workpiece, and the workpiece and The electrodes are respectively located in an electrolyte, the magnetic conduction layer is formed on part of the surface of the electrodes, the magnetic substances are added in the electrolyte, and the magnetic substances are non-conductive materials, and the magnetic force control unit is coupled to the magnetic conduction layer to control the conduction The magnetic layer absorbs the amount of these magnetic substances, thus adjusting the insulation thickness of the electrodes. In addition, the present invention further includes a power supply unit, the two poles of which are respectively coupled to the workpiece and the electrode. Because the present invention can easily control the amount of these magnetic substances adsorbed on the electrodes, and easily control the insulation thickness of the electrodes, so that the purposes of improving processing accuracy and saving processing costs can be achieved.

Description of drawings

Fig. 1 is the schematic diagram of a preferred embodiment of the electrochemical processing device of the present invention;

Fig. 2 is the schematic diagram of a preferred embodiment of the magnetic body of the electrochemical processing device of the present invention;

Fig. 3 is a flow chart of a preferred embodiment of the electrochemical machining method of the present invention; and

4A to 4C are schematic flow charts of a preferred embodiment of patterning processing by electrochemical processing according to the present invention.

[Simple description of figure numbers]

10 tank body 12 workpieces

13 Electrolyte 14 Electrode

16 Magnetic layer 17 The first pattern

19 second pattern 18 magnetic body

181 metal body

183 insulating layer

22 Magnetic control unit

24 power supply units

Detailed ways

In order to have a further understanding and understanding of the structural features of the present invention and the achieved effects, the preferred embodiments and accompanying drawings are used for a detailed description, as follows:

First, please refer to FIG. 1 , which is a schematic diagram of a preferred embodiment of the electrochemical processing device of the present invention. As shown in the figure, the electrochemical processing device of the present invention includes a tank body 10 , an electrolyte solution 13 , an electrode 14 , a magnetic permeable layer 16 , a plurality of magnetic bodies 18 , a magnetic force control unit 22 and a power supply unit 24 . Wherein, the electrode 14 , the magnetic permeable layer 16 , the magnetic bodies 18 and the magnetic force control unit 22 are used as an electrode unit for electrochemical processing. The electrolyte solution 13 is accommodated in the tank body 10 , and the workpiece 12 to be processed is placed in the tank body 10 , and the electrodes 14 and the workpiece 12 are both immersed in the electrolyte solution 13 . The magnetic permeable layer 16 is formed on a part of the surface of the electrode 14 , such as the outer surface. The magnetic body 18 is non-conductive and located in the electrolytic solution 13, for the adsorption of the magnetic layer 16 on the surface of the electrode 14, so that these magnetic bodies 18 form an insulator, and cover the magnetic layer 16, as the electrode 14 insulator. A preferred embodiment of the magnetic body 18 of the present invention is a particulate body. The aforementioned magnetically permeable layer 16 does not cover all surfaces of the electrodes 14 , that is, part of the surfaces of the electrodes 14 are exposed to the electrolyte 13 . The magnetic permeable layer 16 can cover the side surface or the bottom surface of the electrode 14 .

In this embodiment, the magnetic permeable layer 16 covers the lateral surface of the electrode 14 , and the bottom surface of the electrode 14 is exposed to the electrolyte 13 for longitudinal processing of the workpiece 12 . The magnetic force control unit 22 can be a magnet or an electromagnet, so as to be coupled to the magnetically permeable layer 16, and it is used to control the magnetically permeable layer 16 to absorb the magnetic substance 18 in the electrolyte 13, and to be adsorbed on the electrode 14 as an insulator, Alternatively, the magnet 18 is released for operationally selective electrochemical processing. In addition, the magnetic force control unit 22 can further control the magnetic strength of the magnetic permeable layer 16 , and then control the amount of the magnetic substance 18 in the electrolyte 13 adsorbed on the magnetic permeable layer 16 , so as to control the insulation thickness of the electrode 14 .

Following the above, the two poles of the power unit 24 are respectively coupled to the workpiece 12 and the electrode 14 . As shown, the positive terminal of the power supply unit 24 is coupled to the workpiece 12 and the negative terminal is coupled to the electrode 14 . In this way, the electrode 14 cooperates with the electrolyte 13 to process the workpiece 12 and remove unnecessary parts of the workpiece 12 . Because, the magnetic conduction layer 16 of the electrode 14 of the present invention can absorb the magnetic body 18 in the electrolytic solution 13, and is adsorbed on the surface of the electrode 14, as the insulator of the electrode 14, so can avoid that the electrode 14 does not need processing to the workpiece 12 place for processing. In this embodiment, the workpiece 12 is not processed laterally, so the magnetic permeable layer 16 covers the lateral surface of the electrode 14 to prevent the electrode 14 from laterally processing the workpiece 12 . In addition, the electrode 14 itself of the present invention has electrical conductivity and low magnetic permeability, such as copper, but cannot absorb the magnetic body 18; and the magnetic permeable layer 16 can be conductive, such as the magnetic permeable layer 16 can be made of nickel or iron. and formed on the outer surface of the electrode 14 by an electroplating process to form the magnetic permeable layer 16 .

When the electrochemical machining device of the present invention is processing the workpiece 12, it can control the magnetic properties of the magnetically permeable layer 16 by the magnetic force control unit 22 according to the processing state of the workpiece 12 at any time, that is, to observe whether the processing size of the workpiece 12 meets expectations at any time. size, and then control the amount of the magnetic material 18 in the magnetic conductive layer 16 adsorbed in the electrolyte 13, and adjust the insulation thickness and resistance of the electrode 14 to accurately control the processing accuracy; or, the magnetic force control unit 22 can control the magnetic material 18 without It is adsorbed on the magnetic conductive layer 16 to facilitate the electrochemical processing of this electrode state. The setting value of the magnetic force control unit 22 can be set in advance according to the processing requirement, and can be changed at any time during the processing to precisely control the processing accuracy. From the above, it can be known that the present invention can adjust the insulation thickness of the electrode 14 online at any time, without re-making electrodes with different thicknesses of insulators due to the adjustment of the insulation thickness, so that the production cost of the electrode can be greatly reduced, and the processing cost can be saved in this way. the goal of.

In addition, the magnetically permeable layer 16 of the present invention can be more conductive, and the present invention can control the magnetically permeable layer 16 not to attract the magnetic substance 18 on the surface of the electrode 14, so that the magnetically permeable layer 16 on the surface of the electrode 14 can be used to control the workpiece 12 for processing. In this embodiment, when the electrode 14 is initially processed, since the magnetic layer 16 on the side surface of the electrode 14 will absorb the magnetic substance 18, an insulator will be formed on the side surface of the electrode 14, and only the bottom surface will be formed. Processing capability, but not lateral processing capability. However, if it is desired to process the workpiece 12 laterally, the magnetically permeable layer 16 can be controlled to release the adsorbed magnetic substance 18, so that the electrode 14 can have different processing capabilities on the lateral and bottom surfaces, thereby improving the performance of the electrode 14. Processing capability and range of application. In addition, the above-mentioned implementation is only a preferred embodiment of the present invention, and the embodiment of the present invention is not limited to the above-mentioned manner. For example, in the present invention, a plurality of workpieces 12 and electrodes 14 can also be arranged in the tank body 10 to process these workpieces 12 .

Please refer to FIG. 2 , which is a schematic diagram of the magnetic body 18 of the present invention. As shown in the figure, each magnetic body 18 of the present invention further includes a metal body 181 and an insulating layer 183 , and the insulating layer 183 covers the outer surface of the metal body 181 , so that the magnetic body 18 has the characteristics of magnetic conduction and non-conduction. A preferred embodiment of the metal body 181 of the magnetic body 18 of the present invention is a nickel ball or a steel ball, and a preferred embodiment of the insulating layer 183 is a pottery, a resin or a plastic, wherein the resin can be a ring oxygen resin. The above-mentioned materials of the metal body 181 and the insulating layer 183 are only one embodiment of the present invention, and the types thereof are not limited thereto.

Please refer to FIG. 3 , which is a flow chart of another preferred embodiment of the electrochemical machining of the present invention. The present invention can be applied to patterning the workpiece 12 , for example, to form a pattern on the surface of the workpiece 12 . First, please refer to FIG. 4A , an electrode 14 and a magnetic permeable layer 16 are provided, and the magnetic permeable layer 16 is formed on the outer surface of the electrode 14 . Next, referring to FIG. 4B , the magnetically permeable layer 16 is patterned, for example, using mechanical processing or laser processing to remove part of the magnetically permeable layer 16, and expose the surface of the electrode 14 to form a first magnetically permeable layer 16. A pattern 17 , that is, to complete the patterned magnetic permeable layer 16 .

As shown in step S1 of FIG. 3 , the present invention provides the electrodes 14 and the patterned magnetic permeable layer 16 . In this embodiment, the above-mentioned patterned magnetic permeable layer 16 means that the patterned magnetic permeable layer 16 is formed on the surface of the electrode 14 according to the first pattern 17, that is, the surface of the electrode 14 relative to the first pattern 17 is not covered with conductive material. The magnetic layer 16 , while the rest of the surface of the electrode 14 relative to the first pattern 17 is completely covered with the magnetic permeable layer 16 . That is to say, the surface of the electrode 14 other than the first pattern 17 is covered with the magnetic permeable layer 16 , and only the surface of the electrode 14 relative to the first pattern 17 is not covered with the magnetic permeable layer 16 and is exposed. In another embodiment, the patterned magnetic permeable layer 16 can also be formed on the surface of the electrode 14 according to the first pattern 17, but the surface of the electrode 14 relative to the first pattern 17 is covered with a magnetic permeable layer. layer 16 , while the rest of the surface of the electrode 14 relative to the first pattern 17 is not covered with the magnetically permeable layer 16 . That is to say, the surface of the electrode 14 relative to the first pattern 17 is not covered with the magnetic permeable layer 16 and exposed, and only the surface of the electrode 14 relative to the first pattern 17 is covered with the magnetic permeable layer 16 .

One embodiment of patterning the magnetic conduction layer 16 in the present invention is as shown in FIG. 4B , in which the magnetic conduction layer 16 is formed on the outer surface of the electrode 14 to cover the outer surface of the electrode 14 . Then, a part of the magnetic permeable layer 16 is removed to form the first pattern 17 , so that the patterned magnetic permeable layer 16 is formed on the electrode 14 , and the electrode 14 with the patterned magnetic permeable layer 16 is provided. Afterwards, as shown in steps S3 and S4 of FIG. 3 , a magnetic substance 18 is added to the electrolyte solution 13, and the electrode 14 is placed in the electrolyte solution 13, and the magnetic force of the magnetic permeable layer 16 is controlled, and then the magnetic permeable layer 16 is controlled to absorb the magnetic substance. The amount of 18, and the adsorption magnetic body 18 is an insulator. In this way, in this embodiment, as shown in FIG. 4C , the portion of the outer surface of the electrode 14 that is not adsorbed with the magnetic body 18 forms a second pattern 19, so the patterned insulator, that is, the magnetic bodies The insulator formed by 18 has a second pattern 19, and the second pattern 19 is substantially the same as the first pattern 17, and as shown in step S5 of FIG. The workpiece 12 is patterned so that a third pattern corresponding to the second pattern 19 is formed on the workpiece 12 .

As can be seen from the above, the present invention can form different patterns of magnetic permeable layers 16 on the electrodes 14 according to different patterns to be formed on the workpiece 12, so that the magnetic material 18 can be adsorbed by the magnetic permeable layers 16 of different patterns to form a pattern. The patterned insulator is formed on the outer surface of the electrode 14, thus forming the electrode 14 with a patterned insulator (magnetic body 18), and the workpiece 12 is patterned.

In summary, the present invention is an electrochemical processing device and processing method and its electrode unit, which includes an electrode, a magnetic conductive layer, a plurality of magnetic bodies and a magnetic force control unit, the workpiece and the electrode are immersed in the electrolyte, and the electrode is used for The workpiece is processed, the magnetic layer is formed on part of the surface of the electrode, and the magnetic substance is added to the electrolyte and is non-conductive. The magnetic force control unit is used to control the magnetic layer to absorb the magnetic substance, and then control the insulation thickness of the electrode. Because the present invention can control the magnetic layer to absorb the magnetic substance, the insulation thickness of the electrode can be easily adjusted without changing the electrode to adjust the insulation thickness. In this way, the present invention can save the processing cost of electrochemical processing and improve its processing accuracy.

In summary, it is only a preferred embodiment of the present invention, and is not intended to limit the implementation scope of the present invention. All equivalent changes and Modifications should be included within the scope of the claims of the present invention.

Claims (10)

1. An electrochemical machining device for processing at least one workpiece, the electrochemical machining device comprising: A tank body has an electrolyte solution, wherein the workpiece is located in the electrolyte solution; an electrode located in the electrolyte; a magnetic conduction layer formed on a part of the surface of the electrode; a plurality of magnetic bodies located in the electrolyte, and the magnetic bodies are non-conductive; a magnetic force control unit, coupled to the magnetic permeable layer, and controls the magnetic permeable layer to attract the magnetic bodies, so that the magnetic bodies form an insulator, and the insulator covers the a magnetically permeable layer; and A power supply unit, the two poles of which are respectively coupled to the workpiece and the electrode. 2 . The electrochemical processing device according to claim 1 , wherein the magnetic permeable layer covers the side surface of the electrode or the bottom surface of the electrode. 3 . 3. The electrochemical processing device according to claim 1, wherein the magnetic permeable layer is made of nickel or iron. 4. The electrochemical processing device according to claim 1, wherein each of the magnetic bodies further comprises: a metal body; and An insulating layer covers the outer surface of the metal body. 5. The electrochemical machining device according to claim 4, wherein the metal body is a nickel ball or a steel ball. 6. The electrochemical processing device according to claim 4, wherein the insulating layer is a ceramic, a resin or a plastic. 7. The electrochemical processing device according to claim 1, wherein the magnetic force control unit is a magnet or an electromagnet. 8. The electrochemical machining device according to claim 1, wherein the magnetically permeable layer comprises a first pattern, the insulator comprises a second pattern substantially identical to the first pattern, and the workpiece comprises a The third pattern corresponds to the second pattern. 9. An electrochemical machining method, characterized in that it comprises the following steps: providing a cell body with an electrolyte; disposing at least one workpiece in the electrolyte; providing an electrode and a magnetically conductive layer, wherein the magnetically conductive layer is formed on a part of the surface of the electrode, and the electrode is located in the electrolyte; adding a plurality of magnetic bodies into the electrolyte, and the magnetic bodies are non-conductive; controlling the magnetic permeable layer to attract the magnetic substances, so that the magnetic substances form an insulator, and the insulator covers the magnetic permeable layer; and The two poles of a power supply unit are respectively coupled to the workpiece and the electrode. 10. An electrode unit for electrochemical machining, characterized in that it comprises: an electrode; a magnetic conduction layer formed on a part of the surface of the electrode; a plurality of magnetic bodies, which are non-conductive; and A magnetic force control unit is coupled to the magnetic permeable layer and controls the magnetic permeable layer to attract the magnetic bodies, so that the magnetic bodies form an insulator, and the insulator covers the magnetic permeable layer.

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