A processing method and device for high-precision microholes

Abstract

The invention discloses a processing method and device for high-precision microholes. The electrolyte at the tip of the needle forms micro droplets and contacts the surface of the material. By adjusting the distance between the tip of the needle and the surface of the processed material and the size of the micro droplets, the size of the contact surface is controlled to be equal to the size of the punched hole; (3) at both ends of the needle and the processed material Load constant current voltage, electrolytic corrosion occurs in the contact part between the micro-droplet and the processed material; (4) As the corrosion depth deepens, the distance between the tip of the needle and the different corrosion layers remains constant, and the push pump is adjusted to feed back the micro-droplet Compensation, so that the concentration inside the micro-droplet tends to be balanced, and the size of the droplet remains stable, and then the entire micro-hole processing process is completed. The punching method of the present invention belongs to normal temperature punching, without problems such as secondary crystallization and cracking, and the punching size can reach 10 μm at present.

Description

technical field [0001] The invention belongs to the technical field of microhole processing, and relates to a high-precision microhole processing method, in particular to a high-precision microhole processing method and device based on the principle of electrolysis. Background technique [0002] With the rapid development of my country's aerospace industry, there are more and more processing requirements for precision parts, and the research on hole processing is becoming more and more extensive. This is because the processing accuracy and ability of micro holes directly affect engine nozzles, atomizers, and air film holes. And other important component performance indicators, while micropores are also used in precision molds, medical equipment, electronic parts and other fields. According to foreign standards, micropores with a pore size ranging from 0.01 to 0.1mm, submicropores ranging from 0.001 to 0.012mm, and ultramicropores less than 0.001mm. At present, domestic hole ...

AI Technical Summary

Problems solved by technology

[0005] The existing micro-hole processing methods will generate high temperature and have a lot of negative effects on the processed materials. For example, when using the EDM process to drill holes for single-crystal engine blades, it is necessary to precisely control the processing temperature, otherwise it will cause polycrystalline recrystallization of single-crystal blades. Or defects and other adverse results, so that the life of the blade is greatly reduced

Therefore, the existing micro-hole processing technology has adverse factors of damage to raw materials, burying hidden dangers to the performance guarantee of raw materials, and the processing cost also increases accordingly, and the processing efficiency also decreases.

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