CN117245158A - Electrodes and EDM equipment - Google Patents

Abstract

The invention proposes an electrode and electric discharge machining equipment. The electrode includes a first conductive layer, a dielectric layer and a second conductive layer; the first conductive layer is used to electrically connect the power supply; the dielectric layer is made of dielectric material; The two conductive layers include a plurality of conductive units, the plurality of conductive units are arranged at intervals, and the plurality of conductive units are used to release electrical energy; wherein, the dielectric layer is located between the first conductive layer and the second conductive layer, and the first conductive layer has The area of the orthographic projection of the wall surface of each conductive unit facing the first conductive layer on the first wall surface of the first wall surface facing the second conductive layer is smaller than the area of the first wall surface. The electrodes of the present invention divide the electrodes and provide unified power supply in the form of electrostatic induction, which can realize parallel discharge while reducing the wiring complexity of the electrical machining system, and can reduce the inter-electrode parasitic capacitance of the electrodes, facilitating the realization of high-precision and high-efficiency processing.

Description

Electrodes and EDM equipment

Technical field

The invention relates to the field of electrical machining, and in particular to an electrode.

Background technique

Electrical discharge machining is a common processing method and is widely used in the precision processing of conductive or semi-conductive materials such as metals and semiconductors. Since the energy stored in the inter-electrode capacitance will be released into the inter-electrode gap during discharge, the large inter-electrode capacitance generated during large-area discharge machining will increase the discharge energy of finishing, making it difficult to obtain ideal machined surface quality.

In related technologies, in order to reduce the impact of interelectrode capacitance on processing, the method of dividing the electrode can be used to divide the discharge energy while generating parallel discharges, which has achieved a certain improvement in the processing surface quality. Based on the method of dividing the electrode, corresponding solutions have been proposed. The parallel discharge circuit has achieved good results in improving the efficiency and accuracy of large-area processing or array structure processing. The current method of achieving parallel discharge by dividing electrodes requires connecting each electrode unit to the power supply with wires. This method increases the complexity of the system and reduces the engineering practicality of the method, which is not conducive to large numbers of parallel discharges. . Another approach is to use high resistivity materials as electrodes. However, this method is limited to use in large-area electrical discharge machining, and the improvement in machining performance is relatively small.

Contents of the invention

The main purpose of the present invention is to propose an electrode and electric discharge machining equipment. The electrode is divided into electrodes and uniformly powered by electrostatic induction. It can realize parallel discharge while reducing the wiring complexity of the electric machining system, and can reduce the cost of the electrode. Inter-electrode parasitic capacitance facilitates high-precision and high-efficiency processing.

In order to achieve the above objects, the embodiments of the present invention adopt the following technical solutions:

An electrode for electrical machining, the electrode includes a first conductive layer, a dielectric layer and a second conductive layer;

The first conductive layer is used to electrically connect the power supply;

The dielectric layer is made of dielectric material;

The second conductive layer includes a plurality of conductive units, the plurality of conductive units are arranged at intervals, and the plurality of conductive units are used to release electrical energy;

The dielectric layer is located between the first conductive layer and the second conductive layer. The first conductive layer has a first wall facing the second conductive layer. The wall of each conductive unit facing the first conductive layer is an orthographic projection of the first wall. The areas are all smaller than the area of the first wall.

In some embodiments, the first conductive layer, the dielectric layer, and each conductive unit can jointly define a plurality of capacitors, each of which is used to store and transfer electrical energy.

In some embodiments, the first conductive layer and the second conductive layer are arranged oppositely along the first direction, and the minimum distance between each conductive unit and the first conductive layer is equal along the first direction.

In some embodiments, the first wall surface and the dielectric layer are arranged opposite to each other along the first direction, and along the first direction, the projection of the dielectric layer on the first wall surface covers the first wall surface.

In some embodiments, the second conductive layer has a second wall facing the dielectric layer, the second wall and the dielectric layer are arranged opposite to each other along the second direction, and along the second direction, the projection of the dielectric layer on the second wall covers the second wall. Two walls.

In some embodiments, the first wall is a curved surface; and/or the wall surface of each conductive unit facing the first conductive layer is a curved surface; and/or each conductive unit faces away from the first conductive layer. The walls of the layer are curved.

In some embodiments, the second conductive layer has a second wall facing the dielectric layer, and the spacing between the conductive units is the same everywhere along a direction parallel to the second wall.

In some embodiments, one end of the dielectric layer contacts the first conductive layer, and the opposite end contacts the second conductive layer.

In some embodiments, the electrodes are configured such that after the first conductive layer obtains energy provided by the power source, the plurality of conductive units can release electrical energy simultaneously.

An embodiment of the second aspect of the present invention also provides an electric discharge machining equipment, which includes the electrode of any of the above embodiments and a power supply; the power supply is electrically connected to the first conductive layer.

Compared with the prior art, the beneficial effects of the present invention are:

In the technical solution of the present invention, the first conductive layer is used to electrically connect the power supply; the dielectric layer is made of dielectric material; the second conductive layer is used to release electrical energy, and the second conductive layer includes a plurality of conductive units, and the plurality of conductive units The units are arranged at intervals; wherein the dielectric layer is located between the first conductive layer and the second conductive layer, the first conductive layer has a first wall facing the second conductive layer, and the wall of each conductive unit facing the first conductive layer is at the The area of the orthographic projection on one wall is smaller than the area of the first wall. Since the interior of the electrode has a structure of a first conductive layer-a dielectric layer-a second conductive layer, and the second conductive layer includes a plurality of conductive units, multiple parallel capacitors can be constructed. These parallel capacitors are respectively coupled with the inter-electrode capacitance to construct a parallel discharge circuit topology based on capacitive coupling, thereby achieving parallel discharge. Referring to Figure 8, compared with the parallel discharge electrode in the prior art, in which each divided electrode is connected to the power supply through a separate wire, because the electrode of the present invention divides the conductive layer on the discharge side, the method of capacitive coupling electrostatic induction Therefore, only one set of wires is needed to connect the capacitive electrode and the workpiece to the discharge power supply to achieve multiple parallel discharges. There is no need to connect wires to the power supply for each electrode unit. On the one hand, the electrode of the present invention effectively disperses the discharge energy by dividing the electrodes and discharging in parallel, thereby reducing the inter-electrode parasitic capacitance and the influence of the inter-electrode capacitance on processing, which is beneficial to the precision processing of the workpiece and the improvement of the processing surface quality; On the other hand, the electrode dividing method of the present invention can effectively reduce the arrangement of wires and reduce the wiring complexity of the electrical machining system, and can easily achieve a higher number of parallel discharges and increase the discharge frequency, thereby helping to reduce the difficulty of electrode arrangement. , improve discharge efficiency. Therefore, the electrode of the present invention divides the electrodes and uses electrostatic induction to provide unified power supply, which can realize parallel discharge while reducing the wiring complexity of the electrical machining system, and can reduce the inter-electrode parasitic capacitance of the electrodes, which facilitates the realization of high precision and high efficiency. Efficient processing.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without exerting creative efforts.

Figure 1 is a schematic side view of an electrode provided in a first embodiment of the present invention;

Figure 2 is a schematic three-dimensional view of an electrode provided in a second embodiment of the present invention;

Figure 3 is an exploded schematic diagram of the electrode provided in the second embodiment of the present invention;

Figure 4 is an exploded schematic diagram of an electrode provided in the third embodiment of the present invention;

Figure 5 is an exploded schematic diagram of an electrode provided in the fourth embodiment of the present invention;

Figure 6 is an exploded schematic diagram of an electrode provided in the fifth embodiment of the present invention;

Figure 7 is an exploded schematic diagram of an electrode provided in the sixth embodiment of the present invention;

FIG. 8 is a schematic structural diagram of an electrode, a power source, and a workpiece combined in the first embodiment of the present invention.

Explanation of reference numbers:

100-Electrode;

110-first conductive layer; 111-first wall;

120-dielectric layer;

130-second conductive layer; 131-conductive unit; 132-second wall;

200-power supply;

300-Artifact;

X1-first direction;

X2-Second direction.

The realization of the purpose, functional features and advantages of the present invention will be further described with reference to the embodiments and the accompanying drawings.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention.

It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the various components in a specific posture. The relative positional relationship, movement conditions, etc., if the specific posture changes, the directional indication will also change accordingly.

In addition, if there are descriptions involving “first”, “second”, etc. in the embodiments of the present invention, the descriptions of “first”, “second”, etc. are only for descriptive purposes and shall not be understood as indications or implications. Its relative importance or implicit indication of the number of technical features indicated. Therefore, features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, if "and/or", "and/or" or "and/or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and/or B" as an example, it includes solution A, or Plan B, or a plan that satisfies both A and B at the same time. In addition, the technical solutions in various embodiments can be combined with each other, but it must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that such a combination of technical solutions does not exist. , nor within the protection scope required by the present invention.

In related technologies, in order to reduce the impact of interelectrode capacitance on processing, the method of dividing the electrode can be used to divide the discharge energy while generating parallel discharges, which has achieved a certain improvement in the processing surface quality. Based on the method of dividing the electrode, corresponding solutions have been proposed. The parallel discharge circuit has achieved good results in improving the efficiency and accuracy of large-area processing or array structure processing. The current method of achieving parallel discharge by dividing electrodes requires connecting each electrode unit to the power supply with wires. This method increases the complexity of the system and reduces the engineering practicality of the method, which is not conducive to large numbers of parallel discharges. . Another approach is to use high resistivity materials as electrodes. However, this method is limited to use in large-area electrical discharge machining, and the improvement in machining performance is relatively small.

In view of this, referring to Figures 1-8, an embodiment of the present invention provides an electrode 100 for electrical machining. Regarding the application of the electrode 100, in some specific embodiments, the electrode 100 can be used for EDM machining of the workpiece 300, through the electrode 100 connected to one end of the power supply 200 and the workpiece connected to the other end of the power supply 200 in the present invention. The electroerosive effect of the pulse discharge between them achieves the effect of processing the workpiece 300. Among them, the electric corrosion effect is manifested as the intermittent discharge phenomenon between the electrode 100 and the workpiece 300. After a large amount of discharge, the workpiece 300 is broken down by the discharge at the required position, and spark discharge occurs, thereby partially melting the surface of the workpiece 300. Evaporate, corrode or dissolve to create the desired shape. Therefore, EDM has the characteristics of high pulse discharge energy density; short pulse discharge duration; no contact with the workpiece to be processed; and simple processing technology.

The electrode 100 includes a first conductive layer 110, a dielectric layer 120 and a second conductive layer 130.

Referring to FIGS. 1-2 , the first conductive layer 110 is used to electrically connect the power supply 200 . It can be understood that the first conductive layer 110 is used to obtain electrical energy provided by the power supply 200 .

Dielectric layer 120 is made of dielectric material. It can be understood that due to the properties of dielectric materials, under the action of an electric field, the dielectric layer 120 can produce a polarization phenomenon, causing corresponding positive and negative charges to be formed inside the dielectric layer 120 to form a dielectric. Therefore, the main function of the dielectric layer 120 can be to isolate and act as a medium for storing electrical energy. It can store charges under the action of an electric field, and will undergo polarization as the capacitor operates, causing it to form a reverse potential difference with the electric field, thereby achieving energy storage effect.

Referring to FIGS. 1-2 , the second conductive layer 130 includes a plurality of conductive units 131 . The plurality of conductive units 131 are arranged at intervals. It can be understood that the second conductive layer 130 includes a plurality of electrode 100 units, and the plurality of electrode 100 units are divided from each other, thereby achieving the effect of inter-electrode capacitance division. Specifically, the interior of the electrode 100 has a structure of a first conductive layer 110 - a dielectric layer 120 - a second conductive layer 130, and the second conductive layer 130 includes a plurality of conductive units 131, so that multiple parallel capacitors can be constructed. These parallel capacitors are respectively coupled with the inter-electrode capacitance to construct a parallel discharge circuit topology based on capacitive coupling, thereby achieving parallel discharge. Based on the above-mentioned arrangement of dividing the electrode 100, since the discharge electrode 100 is divided, the originally large interelectrode capacitance between the power supply 200 and the electrode 100 is divided into a plurality of parallel capacitances at the electrode 100. Each divided capacitance The capacitance is smaller than the inter-electrode capacitance before splitting. It should be noted that in some embodiments, according to different arrangements of the electrodes 100 , the multiple parallel capacitors formed after being divided may be equivalent capacitances or may be non-equivalent capacitances. In addition, in different embodiments, the second conductive layer 130 may be defined only by a plurality of conductive units 131 arranged at intervals, or may be defined by a plurality of conductive units 131 and a base plate connected to the conductive units 131 .

According to the above-mentioned arrangement of the second conductive layer 130, the plurality of conductive units 131 are used to release electrical energy. It can be understood that each conductive unit 131 can release the electrical energy stored in the electrode 100 . Specifically, in some embodiments, the second conductive layer 130 can be close to the workpiece 300 to be processed during processing, and there can be a higher voltage between the electrode 100 and the workpiece 300 before discharge. When the two electrodes 100 are close, the medium between them After being broken down, spark discharge occurs immediately, and at the same time, the workpiece 300 can be electrically processed by utilizing the electric corrosion phenomenon.

According to the arrangement of the first conductive layer 110, the dielectric layer 120 and the second conductive layer 130, it can be understood that the above three can jointly define a capacitive structure, so that the electrode 100 of the present invention can be used as the capacitive electrode 100, and Has capacitive properties. The first conductive layer 110 and the second conductive layer 130 can be regarded as opposite plates on both sides of the capacitor, and the dielectric layer 120 can be regarded as an insulating layer between the two plates. And the dielectric layer 120 can be used to isolate the two plates (the first conductive layer 110 and the second conductive layer 130) and reduce the conduction of electrical energy. As can be seen from the above description, the electrode 100 of the present invention has capacitive characteristics, so the first conductive layer 110 and the second conductive layer 130 can be made of conductive materials. For example, the material can be metal, specifically aluminum alloy, Galvanized iron plate, copper plate, etc. Depending on different processing requirements, the dielectric material can be one of solid materials, liquid materials, and gaseous materials. The dielectric material may have a high dielectric constant and low dielectric loss to achieve a better capacitive effect. For example, the material of the dielectric layer 120 may be one of ceramics, polyethylene, and polypropylene. It should be noted that in the electrode 100 of the present invention, the materials of the first conductive layer 110, the dielectric layer 120 and the second conductive layer 130 can be selected according to the actual discharge requirements and discharge conditions of the electrode 100, and different materials can have different The characteristics are no longer limited here.

By rationally designing the size and shape of the first conductive layer 110, the dielectric material and the second conductive layer 130, as well as the number and division form of the plurality of conductive units 131, a corresponding number of parallel discharge machining can be produced and satisfy the corresponding workpiece 300 processing needs. For example, according to different processing requirements, see FIGS. 3-4 , in some embodiments, along the direction parallel to the first wall 111 , the first conductive layer 110 , or the dielectric material, or the second conductive layer 130 The cross-sectional shape can be one of rectangle, circle, ellipse, and other polygons. In order to make the electrode 100 play a better capacitive effect and discharge effect, in some embodiments, along the direction parallel to the first wall 111, the cross-section of the first conductive layer 110, or the dielectric material, or the second conductive layer 130 The shapes can all be the same, and the cross-sectional edges of the three can be aligned.

In addition, according to different processing requirements, see FIGS. 3-6 , in different embodiments, the second conductive layer 130 may have different cross-sectional shapes and different arrangements. Specifically, see FIGS. 3 and 4 . In some embodiments, the plurality of conductive units 131 may be in the form of multiple evenly distributed rectangular structures. Referring to FIG. 5 , in some embodiments, the plurality of conductive units 131 may be in the form of multiple rectangular structures. A nested ring structure, see FIG. 6 , in some embodiments, the plurality of conductive units 131 may be in a sector structure distributed along the circumference of the second conductive layer 130 . Furthermore, in order to meet diversified processing requirements, the second conductive layer 130 can also be divided into different conductive areas, and the different conductive areas have different structures or distribution forms of the conductive units 131.

Referring to FIGS. 1 to 6 , the electrode 100 according to the present invention may have capacitive characteristics. In order to achieve the dielectric effect in the capacitor, the dielectric layer 120 is located between the first conductive layer 110 and the second conductive layer. The first conductive layer 110 has a first wall surface 111 facing the second conductive layer 130 . It can be understood that the first wall 111 is located on the side of the first conductive layer 110 close to the second conductive layer 130. When the electrode 100 is energized, the power supply 200 is connected to the first conductive layer 110, so that there can be charge around the first wall 111, so that This charge enables the transfer of electrical energy within the electrode 100 . The area of the orthographic projection of the wall surface of each conductive unit 131 facing the first conductive layer 110 on the first wall surface 111 is smaller than the area of the first wall surface 111 . It can be understood that the wall surface of each conductive unit 131 facing the first conductive layer 110 can be used as a plate wall surface for receiving charges, and this wall surface and the first wall surface 111 jointly define the corresponding facing wall area of the capacitive electrode 100 . Therefore, the area of the orthographic projection of the wall surface of each conductive unit 131 facing the first conductive layer 110 on the first wall surface 111 corresponds to the area of each conductive unit 131 facing the first wall surface 111 , which area is smaller than the area of the first wall surface 111 . : The capacitance between the opposing first wall surface 111 and the second conductive layer 130 is divided into multiple capacitors due to the existence of multiple conductive units 131. Since the facing area of each conductive unit 131 is smaller than the area of the first wall surface 111 , so that the capacitances of the multiple capacitors formed by division are smaller than the undivided interelectrode capacitance.

Further, referring to FIG. 7 , in some embodiments, the area of the orthographic projection of the wall surface of the second conductive layer 130 facing the first conductive layer 110 on the first wall surface 111 may be smaller than the area of the first wall surface 111 . It can be understood that in this embodiment, the overall projected area of the second conductive layer 130 is smaller than the area of the first wall 111 , so that the area facing the second conductive layer 130 can be reduced relative to the first conductive layer 110 . further reduce the interelectrode capacitance.

According to the combination of the above embodiments, it can be seen that the first conductive layer 110 is used to electrically connect the power supply 200; the dielectric layer 120 is made of dielectric material; the second conductive layer 130 is used to release electrical energy, and the second conductive layer 130 It includes a plurality of conductive units 131 arranged at intervals; wherein the dielectric layer 120 is located between the first conductive layer 110 and the second conductive layer, and the first conductive layer 110 has a third conductive layer facing the second conductive layer 130. On a wall 111 , the area of the orthographic projection of the wall of each conductive unit 131 facing the first conductive layer 110 on the first wall 111 is smaller than the area of the first wall 111 . Since the interior of the electrode 100 has a structure of the first conductive layer 110 - the dielectric layer 120 - the second conductive layer 130, and the second conductive layer 130 includes a plurality of conductive units 131, multiple parallel capacitors can be constructed. These parallel capacitors are respectively coupled with the inter-electrode capacitance to construct a parallel discharge circuit topology based on capacitive coupling, thereby achieving parallel discharge. Referring to Figure 8, compared with the parallel discharge electrodes 100 in the prior art in which each divided electrode 100 is connected to the power supply 200 through a separate wire, since the electrode 100 of the present invention divides the conductive layer on the discharge side, through the capacitor The method of coupling electrostatic induction is used to supply electricity, so only a set of wires is needed to connect the capacitive electrode 100 and the workpiece 300 to the discharge power supply 200 to achieve multiple parallel discharges. There is no need to use wires to connect each electrode 100 unit to the power supply 200. On the one hand, the electrode 100 of the present invention effectively disperses the discharge energy by dividing the electrodes 100 for parallel discharge, thereby reducing the inter-electrode parasitic capacitance and the influence of the inter-electrode capacitance on processing, which is beneficial to the precision processing of the workpiece 300 and the quality of the processed surface. improvement; on the other hand, the electrode 100 division method of the present invention can effectively reduce the arrangement of wires and reduce the wiring complexity of the electrical machining system, and can easily achieve a higher number of parallel discharges and increase the discharge frequency, thereby conducive to reducing the The difficulty of arranging the electrode 100 improves the discharge efficiency. Therefore, the electrode 100 of the present invention divides the electrodes and uses electrostatic induction to provide unified power supply, which can realize parallel discharge while reducing the wiring complexity of the electrical machining system, and can reduce the inter-electrode parasitic capacitance of the electrodes, facilitating the realization of high precision, Highly efficient processing.

In order to ensure that after the electrode 100 is divided into the second conductive layer 130, each conductive unit 131 can have an equivalent and uniform discharge effect, so that the processed surface quality is better. Referring to FIG. 4 , in some embodiments, the first conductive layer 110 , the dielectric layer 120 and each conductive unit 131 can jointly define a plurality of capacitors, each of which is used to store and transfer electrical energy. . According to the descriptions of the above embodiments, it can be seen that the first conductive layer 110 and the second conductive layer 130 can be regarded as opposite electrode plates on both sides of the capacitor, and the dielectric layer 120 can be regarded as an insulating layer between the two electrode plates.

According to different processing needs. In some embodiments, multiple capacitors formed by the first conductive layer 110 - the dielectric layer 120 - the plurality of conductive units 131 may have the same capacitance, so that the above-mentioned multiple capacitors can serve as equivalent parallel capacitors, or more Capacitors can be arranged side by side so that multiple capacitors can be evenly arranged. In other embodiments, the plurality of capacitors may have different capacitances or have different arrangements to correspond to different discharge requirements of the capacitors.

Further, in order to enable the plurality of conductive units 131 of the second conductive layer 130 to define multiple equivalent capacitances. Referring to FIG. 2 , in some embodiments, the first conductive layer 110 and the second conductive layer 130 are arranged oppositely along the first direction X1. Along the first direction X1, the minimum distance between each conductive unit 131 and the first conductive layer 110 may be equal. It can be understood that in this embodiment, the minimum distance between each conductive unit 131 and the first conductive layer 110 corresponds to the distance between the two plates of the corresponding capacitor, which is inversely proportional to the capacitance of the capacitor. Based on this setting and controlling other factors that affect the capacitance, the capacitances of the plurality of capacitors defined by the plurality of conductive units 131 can be equal or substantially equal. It should be noted that in this embodiment, the minimum distance between each conductive unit 131 and the first conductive layer 110 may be zero.

In order to make the dielectric layer 120 play a good dielectric role in the electrode 100, see FIGS. 2-7. In some embodiments, the first wall 111 and the dielectric layer 120 are arranged oppositely along the first direction X1. In the direction X1, the projection of the dielectric layer 120 on the first wall 111 may cover the first wall 111. It can be understood that, in this embodiment, the first direction Relative to the area facing the first wall 111, the projection of 120 covering the first wall 111 means that the dielectric layer 120 covers the effective charge transfer range from the first conductive layer 110 to the dielectric layer 120, thereby achieving a uniform and good effect. charge transfer effect.

Similar to the above embodiment, in order to make the dielectric layer 120 play a good dielectric role in the electrode 100 . Referring to FIGS. 2-7 , in some embodiments, the second conductive layer 130 may have a second wall surface 132 facing the dielectric layer 120 , and the second wall surface 132 is arranged opposite to the dielectric layer 120 along the second direction X2. It can be understood that, similar to the first wall 111 , the second wall 132 is located on the side of the second conductive layer 130 close to the dielectric layer 120 . When the electrode 100 is energized, the charges stored in the dielectric layer 120 can move along the second direction X2 Transferred to the second wall 132 , thereby forming charge transfer from the first conductive layer 110 to the second conductive layer 130 . Along the second direction X2, the projection of the dielectric layer 120 on the second wall 132 may cover the second wall 132. It can be understood that, in this embodiment, the second direction 120 relative to the area facing the second wall surface 132, the projection covering the second wall surface 132 means that the dielectric layer 120 covers the effective charge transfer range from the dielectric layer 120 to the second conductive layer 130, thereby achieving a uniform and good effect. charge transfer effect.

In different embodiments, the walls of the first conductive layer 110 , the dielectric layer 120 and the second conductive layer 130 may be flat or curved. In order to achieve efficient charge transfer between each conductive unit 131 and the first conductive layer 110 , in some embodiments, the first conductive layer 110 faces the wall of each conductive unit 131 and the first conductive layer 110 of each conductive unit 131 The walls can all be flat. Therefore, referring to FIGS. 2-7 , in some embodiments, the wall surfaces of each conductive unit 131 facing the first conductive layer 110 may be parallel to the first wall surface 111 . It can be understood that in this embodiment, since the wall surface of the first conductive layer 110 facing the conductive unit 131 is parallel to the first wall surface 111, the potential difference between the two is relatively uniform, which is beneficial to the connection between the conductive units 131. A parallel equivalent discharge effect is formed between them. According to different processing requirements, in other embodiments, there may be at least one conductive unit 131 whose wall facing the first conductive layer 110 is not parallel to the first wall 111 .

Correspondingly, in other embodiments, the first wall surface 111 may be a curved surface; and/or the wall surface of each conductive unit 131 facing the first conductive layer 110 may be a curved surface; and/or each of the conductive units 131 may be a curved surface. The wall surface of the unit 131 facing away from the first conductive layer 110 may be a curved surface. The above arrangement allows the wall surface of the electrode 100 used to transmit electrical energy to be made into any three-dimensional curved surface shape, thereby enabling the electrode 100 to adapt to different processing requirements. Similarly, the above-mentioned first wall surface 111, the wall surface of each conductive unit 131 facing the first conductive layer 110, and the wall surface of each conductive unit 131 facing away from the first conductive layer 110 can also be plane, and similarly It can achieve the effect of adapting to processing needs.

Referring to Figures 2-5, in some embodiments, the second conductive layer 130 has a second wall 132 facing the dielectric layer 120, and in a direction parallel to the second wall 132, the spacing between the conductive units 131 can be All are the same. It can be understood that the above arrangement makes the gaps between the conductive units 131 equal, thereby making the capacitance corresponding to the conductive units 131 more uniform. Corresponding to different discharge requirements, the spacing between the conductive units 131 in the direction parallel to the second wall 132 may be unequal. Furthermore, in some embodiments, the second conductive layer 130 may also be divided into different conductive areas, and the spacing between the conductive units 131 in different conductive areas may be different. For example, referring to FIG. 6 , in this embodiment, the distribution density of the conductive units 131 in the middle area is different from the distribution density of the conductive units 131 in the surrounding areas, so that special processing requirements can be adapted.

Referring to FIGS. 1-2 , in some embodiments, one end of the dielectric layer 120 contacts the first conductive layer 110 and the opposite end contacts the second conductive layer 130 . It can be understood that the dielectric layer 120 is located between the first conductive layer 110 and the second conductive layer 130 and is in contact with both. That is to say, in this embodiment, the dielectric layer 120 and the first conductive layer 110 There are no other layered blocks between the dielectric layer 120 and the second conductive layer 130 , which can facilitate the transfer of charges. It should be noted that in this embodiment, when the dielectric layer 120 is in a liquid or gaseous state, it can also be considered that both ends of the dielectric layer 120 can contact the first conductive layer 110 and the second conductive layer 130 . In other embodiments, to meet different requirements, other layers may be provided between the dielectric layer 120 and the first conductive layer 110 or between the dielectric layer 120 and the second conductive layer 130 .

It can be seen from the above description that multiple conductive units 131 can be used to release electrical energy. In some embodiments, the processing process of the workpiece 300 requires that the discharge throughout the electrode 100 is relatively uniform to obtain better processing surface quality. To this end, in some embodiments, the electrode 100 may be configured such that after the first conductive layer 110 obtains energy provided by the power supply 200, the plurality of conductive units 131 can simultaneously release electrical energy. It can be understood that in some embodiments, after the first conductive layer 110 obtains the energy provided by the power supply 200, the electric energy can be stored in the dielectric layer 120. After the electrode 100 generates a breakdown effect, the electric energy is transferred to each conductive unit 131, and At this time, multiple conductive units 131 can release electrical energy at the same time. Correspondingly, in order to meet different processing requirements of the workpiece 300, each part of the electrode 100 may be required to discharge at different times or with different discharge amounts. To this end, in other embodiments, the electrode 100 may be configured such that after the first conductive layer 110 obtains energy provided by the power supply 200, the plurality of conductive units 131 can release electrical energy respectively. Furthermore, in an embodiment in which each conductive unit 131 can release electric energy respectively, in order to facilitate the control of the conductive units 131 in each part to discharge respectively, each conductive unit 131 can be further connected to a controller.

An embodiment of the second aspect of the present invention also provides an electric discharge machining equipment, which includes the electrode 100 of any of the above embodiments and a power supply 200. Wherein, the power supply 200 is electrically connected to the first conductive layer 110 . It can be understood that, corresponding to the descriptions of the above embodiments, in this embodiment, the power supply 200 is used to provide electrical energy to the first conductive layer 110 . Thanks to the above-mentioned improvements of the electrode 100, the electric discharge machining equipment according to the second embodiment of the present invention has the same technical effects as the electrode 100 in the above-mentioned embodiments. Meanwhile, referring to FIG. 8 , based on the improvement of the electrode 100 of the present invention, in some embodiments, the electrode 100 only needs to connect the wire to one end of the power supply 200 at the first conductive layer 110 , and then connect the other end of the power supply 200 to By using the workpiece, the parallel discharge of the electrodes 100 and the processing effect of the electric discharge machining equipment can be achieved, thereby simplifying the complexity of the wiring arrangement of the electric discharge machining equipment.

The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Under the application concept of the present invention, equivalent structural transformations can be made using the contents of the description and drawings of the present invention, or directly/indirectly used in other applications. Relevant technical fields are included in the patent protection scope of the present invention.

Claims (10)

1. An electrode for electrical machining, characterized in that the electrode includes: The first conductive layer is used to electrically connect the power supply; dielectric layer, made of dielectric material; The second conductive layer includes a plurality of conductive units, the plurality of conductive units are arranged at intervals, and the plurality of conductive units are used to release electrical energy; Wherein, the dielectric layer is located between the first conductive layer and the second conductive layer, the first conductive layer has a first wall facing the second conductive layer, and each of the conductive units faces the The area of the orthographic projection of the wall surface of the first conductive layer on the first wall surface is smaller than the area of the first wall surface. 2. The electrode according to claim 1, characterized in that, The first conductive layer, the dielectric layer and each of the conductive units can jointly define a plurality of capacitors, and each of the capacitors is used to store and transfer electrical energy. 3. The electrode according to claim 1, characterized in that, The first conductive layer and the second conductive layer are arranged oppositely along a first direction, and along the first direction, the minimum distance between each conductive unit and the first conductive layer is equal. 4. The electrode according to claim 1, characterized in that, The first wall surface and the dielectric layer are arranged opposite to each other along a first direction. Along the first direction, a projection of the dielectric layer on the first wall surface covers the first wall surface. 5. The electrode according to claim 1, characterized in that, The second conductive layer has a second wall facing the dielectric layer, the second wall and the dielectric layer are arranged oppositely along a second direction, and along the second direction, the dielectric layer is The projection of the second wall surface covers the second wall surface. 6. The electrode according to claim 1, characterized in that, The first wall surface is a curved surface; and / or, The wall surface of each conductive unit facing the first conductive layer is a curved surface; and / or, The wall surface of each conductive unit facing away from the first conductive layer is a curved surface. 7. The electrode according to claim 1, characterized in that, The second conductive layer has a second wall facing the dielectric layer, and the spacing between the conductive units is the same in a direction parallel to the second wall. 8. The electrode according to claim 1, characterized in that, One end of the dielectric layer contacts the first conductive layer, and the opposite end contacts the second conductive layer. 9. The electrode according to claim 1, characterized in that, The electrode is configured such that after the first conductive layer obtains energy provided by the power source, the plurality of conductive units can release electrical energy simultaneously. 10. An electric discharge machining equipment, characterized in that it includes: The electrode according to any one of claims 1-9; and A power supply, electrically connected to the first conductive layer.