An electrode consisting of a copper rod and an iron seat

Abstract

The utility model discloses a kind of electrode of copper bar and iron seat sub composition, it is related to electrode technical field, including iron seat sub, at least five groups of array type positioning holes are set on the iron seat sub, the number of each group array type positioning hole is five, every array type positioning hole set by the iron seat sub is equipped with electrode tooth, wherein five electrode tooth is a group, every five electrode tooth outer surface is equipped with connecting sleeve, in the present application, by adopting the combination structure of low carbon steel iron seat sub and purple copper electrode tooth replaces traditional integrated full copper structure, cooperate the vertical setting of array type positioning hole, electrode tooth equidistance (2~3mm) arrangement and interference fit, it solves the problem that traditional full copper electrode cost is high, processing is difficult and dispersed tooth discharge energy dispersion, low efficiency, while equidistance "tooth array" ensures discharge uniformity to improve processing precision, iron seat sub galvanization (5-10 μm) can also prevent electrochemical corrosion, guarantee long-term stable work.

Description

Technical Field

[0001] This utility model relates to the field of electrode technology, and in particular to an electrode composed of a copper rod and an iron base. Background Technology

[0002] In the field of EDM (Electrical Discharge Machining), the electrode is a key component for achieving precision workpiece forming, and its structural design and material selection directly affect processing efficiency, cost, and accuracy.

[0003] Currently, the electrodes used in the industry generally adopt an integrated all-copper structure, that is, the entire electrode (including the substrate and the electrode teeth used for discharge) is made of copper. The original intention of this all-copper electrode design is partly due to the good conductivity of copper, which can meet the basic requirements of EDM. At the same time, in order to adapt to the convenience of CNC machining process, the electrode teeth of existing electrodes are usually designed to be more dispersed and numerous - by increasing the tooth spacing and increasing the number of teeth, the tool path complexity during CNC machining is reduced to ensure machining feasibility.

[0004] However, the aforementioned existing electrodes have obvious technical defects: On the one hand, the all-copper structure leads to high material costs, and copper has low hardness and is difficult to process, and the CNC machining process is time-consuming. On the other hand, the dispersed and numerous electrode teeth significantly increase the EDM machining time. The dispersed tooth structure results in a dispersed distribution of discharge energy, requiring multiple repeated discharges to complete the workpiece machining, which severely restricts discharge efficiency and further increases the overall machining cost.

[0005] Therefore, in view of the shortcomings of existing all-copper electrodes in terms of cost, processing efficiency and discharge performance, there is an urgent need for a new electrode structure that can balance material cost, processing convenience and discharge efficiency. Utility Model Content

[0006] Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides an electrode composed of a copper rod and an iron base, which solves the technical problems of high material costs due to the all-copper structure, low hardness of copper, high processing difficulty, and long CNC machining time.

[0007] Technical solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: An electrode consisting of a copper rod and an iron base includes an iron base with at least five sets of arrayed positioning holes, each set containing five holes. Each arrayed positioning hole in the iron base contains electrode teeth, with five electrode teeth forming a group. A connecting sleeve is fitted onto the outer surface of every five electrode teeth.

[0009] Preferably, the iron base and the electrode teeth are interference-fitted, and the axis of the array of positioning holes in the iron base is perpendicular to the bottom surface of the iron base.

[0010] Preferably, the number of electrode teeth is 25, and five electrode teeth are arranged on the iron base at equal intervals (2-3 mm).

[0011] Preferably, the iron base is a cuboid, made of low-carbon steel, and its surface is galvanized (5-10 μm thick). The electrode teeth are made of copper.

[0012] Compared with the prior art, the present invention has the following beneficial effects: In this new type of electrode, a combination structure of low-carbon steel base and copper electrode teeth is used to replace the traditional integrated all-copper structure. With the vertical setting of arrayed positioning holes, the equal spacing (2-3mm) of the electrode teeth and interference fit, and the use of connecting sleeves to fix each group of electrode teeth, the material cost and processing time are reduced by taking advantage of the fact that the cost of low-carbon steel is only 1 / 5-1 / 8 of that of copper and that it is easy to cut (CNC machining efficiency is 30% higher than that of cast iron). At the same time, the high conductivity (≥95% IACS) and conical tooth section (cone angle 30°-45°) of the copper electrode teeth concentrate the discharge energy, solving the problems of high cost, difficult processing and low efficiency of traditional all-copper electrodes. Meanwhile, the equal spacing "tooth array" ensures discharge uniformity to improve processing accuracy, and the galvanized treatment (5-10μm) of the iron base can also prevent electrochemical corrosion and ensure long-term stable operation. Attached Figure Description

[0013] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0014] Figure 1 This is a structural diagram of the entire utility model; Figure 2 This is a structural diagram of the iron base of this utility model; Figure 3 This is a structural diagram of the electrode teeth of this utility model.

[0015] Illustration: 1. Iron base; 2. Arrayed positioning holes; 3. Connecting sleeve; 4. Electrode teeth. Detailed Implementation

[0016] This application provides an electrode composed of a copper rod and an iron base, which effectively solves the technical problems of high material costs caused by the all-copper structure, low hardness of copper, high processing difficulty, and long CNC machining time. Example

[0017] like Figure 1-3 As shown, the technical solution in this application aims to effectively address the technical problems of high material costs due to the all-copper structure, low hardness of copper, high processing difficulty, and long CNC machining time. The overall approach is as follows: To address the problems existing in the prior art, this utility model provides an electrode composed of a copper rod and an iron base, including an iron base 1. The iron base 1 has at least five sets of arrayed positioning holes 2, with each set of arrayed positioning holes 2 containing five holes. Each arrayed positioning hole 2 in the iron base 1 is provided with electrode teeth 4, wherein five electrode teeth 4 form a group, and a connecting sleeve 3 is fitted on the outer surface of every five electrode teeth 4.

[0018] The iron base 1 and the electrode teeth 4 are fitted with an interference fit. The axis of the array-type positioning holes 2 on the iron base 1 is perpendicular to the bottom surface of the iron base 1, ensuring that the perpendicularity of the electrode teeth 4 meets the standard after installation and avoiding uneven current distribution during discharge. The electrode teeth 4 are "stepped", with one end being cylindrical (the section that mates with the iron base 1, 10-15mm in length) and the other end being a conical tooth section (the discharge working section, with a cone angle of 30°-45° and a tooth height of 5-8mm). The conical tooth section can concentrate the discharge energy, solving the problem of "dispersed discharge and low efficiency" of traditional dispersed teeth. The stepped structure makes it easy to distinguish between the assembly section and the working section, reducing the complexity of processing. There are 25 electrode teeth 4, with five electrode teeth 4 arranged at equal intervals (e.g., 2-3mm) on the iron base 1 to form a compact "tooth array". Too few electrode teeth 4 will limit the processing range, while too many will make it difficult to maintain. "Compactness" and equidistant distribution ensure uniform discharge. The iron base 1 is a cuboid with 2-4 mounting screw holes (M6 diameter) at the bottom for fixing to the EDM worktable. The iron base 1 is made of low carbon steel (Q235) instead of cast iron or high carbon steel. Low carbon steel is easy to cut (CNC machining efficiency is 30% higher than cast iron), and its cost is only 1 / 5-1 / 8 of copper. It is also strong enough to support the copper rod (avoiding deformation). The surface of the iron base 1 is galvanized (5-10μm thick) to prevent corrosion due to electrochemical effects when in contact with the copper rod. The electrode teeth 4 are made of copper (T2) instead of brass or bronze. Copper has a much higher conductivity (≥95% IACS) than brass (about 20%-40% IACS), making it more suitable for EDM discharge (requiring high-frequency current conduction). Copper also has good ductility, making it easy to process tapered teeth.

[0019] Working principle: The first step involves installing 25 copper electrode teeth 4 into the array-type positioning holes 2 of the iron base 1 using an interference fit. The perpendicularity of the axis of the array-type positioning holes 2 to the bottom surface of the iron base 1 is used to ensure that the perpendicularity of the electrode teeth 4 meets the standard after installation, thus avoiding uneven current distribution during discharge. At the same time, connecting sleeves 3 are fitted onto the outer surface of each group of five electrode teeth 4 to further fix the spacing between the electrode teeth (maintaining an equal spacing of 2-3 mm), forming a compact and stable "tooth array". Subsequently, the entire electrode is fixed to the EDM worktable through 2-4 M6 mounting screw holes at the bottom of the iron base 1, completing the assembly.

[0020] In the second step, during electrode operation, the copper electrode teeth 4, with their high conductivity (≥95% IACS), efficiently conduct high-frequency current. Their tapered teeth (30°-45° cone angle, 5-8mm tooth height) concentrate discharge energy, solving the problem of "dispersed discharge and low efficiency" inherent in traditional dispersed teeth. The "tooth array" formed by 25 equally spaced electrode teeth ensures uniform energy distribution within the discharge area, improving machining accuracy. The low-carbon steel (Q235) used in the iron base 1 provides stable support, preventing deformation of the electrode teeth 4 under stress. The 5-10μm zinc plating layer on the surface isolates the iron base 1 from direct electrochemical contact with the copper electrode teeth 4, preventing corrosion and ensuring long-term stable operation. The stepped electrode tooth structure (cylindrical mating section length 10-15mm) facilitates the distinction between the assembly section and the working section, reducing the complexity of machining and maintenance, thus achieving efficient and stable spark discharge machining overall.

[0021] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An electrode composed of a copper rod and an iron base, comprising an iron base (1), characterized in that, The iron base (1) is provided with at least five sets of arrayed positioning holes (2), each set of arrayed positioning holes (2) has five holes, each arrayed positioning hole (2) of the iron base (1) is provided with electrode teeth (4), five electrode teeth (4) form a group, and a connecting sleeve (3) is fitted on the outer surface of each group of five electrode teeth (4).

2. The electrode composed of a copper rod and an iron base according to claim 1, characterized in that, The iron base (1) and the electrode teeth (4) are fitted with an interference fit.

3. The electrode composed of a copper rod and an iron base according to claim 2, characterized in that, The axis of the array of positioning holes (2) on the iron base (1) is perpendicular to the bottom surface of the iron base (1).

4. The electrode composed of a copper rod and an iron base according to claim 3, characterized in that, The number of electrode teeth (4) is 25, and five electrode teeth (4) are arranged on the iron base (1) at equal intervals of 2-3 mm.

5. The electrode composed of a copper rod and an iron base according to claim 4, characterized in that, The iron base (1) is made of low carbon steel, and the surface of the iron base (1) is galvanized with a thickness of 5-10μm.

6. The electrode composed of a copper rod and an iron base according to claim 5, characterized in that, The electrode teeth (4) are made of copper.

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