EDM equipment with ultrasonic assistance

Abstract

The invention discloses an electric spark processing equipment with ultrasonic assistance, which includes a material loading cabin and an electrode base. The material loading cabin is provided with a material plate and an ultrasonic generating device. The electrode base includes a displacement driving source and an electrode device. The electrode device It includes a seat plate, an electrode seat, and an oil atomization injection mechanism. The oil atomization injection mechanism includes an annular oil storage chamber, an annular air injection chamber, and the outer peripheral wall of the annular oil storage chamber and the annular air injection chamber. The outer peripheral wall is respectively provided with a circular tangential feeding nozzle, the bottom of the annular air injection chamber is provided with a mixing chamber, the bottom of the mixing chamber is provided with a tapered injection channel, and the bottom of the annular oil storage chamber is provided with There is an annular feeding channel connected to the material mixing chamber, and an annular acceleration channel connected to the material mixing chamber is arranged in the annular air injection chamber. The invention adopts the method of matching the injection electric spark medium and the ultrasonic amplitude, meets the requirements of accurate discharge channel configuration and efficient removal of electric corrosion products, improves the processing quality of workpieces, and is especially suitable for deep hole forming.

Description

technical field [0001] The invention relates to electric discharge processing equipment with ultrasonic assistance, and belongs to the technical field of electric discharge processing equipment. Background technique [0002] With the development of production and the advancement of science and technology, new materials with high melting point, high hardness, high strength, high brittleness, high viscosity, high toughness, high purity and other properties are constantly appearing, with various complex structures and special process requirements. There are more and more workpieces, still using mechanical processing methods, sometimes difficult or impossible to process. [0003] The EDM method is a method of processing materials by using the electrocorrosion phenomenon generated during pulse discharge between the two electrodes, because it is not limited by the strength and hardness of the material during processing, and there is no macroscopic force between the workpiece and t...

AI Technical Summary

Problems solved by technology

[0004] Traditional EDM uses oil as the discharge medium, which has stable processing and high efficiency, but there are also some disadvantages: the gas decomposed by pyrolysis is harmful to the human body and the environment; there is a fire hazard; the waste after use is harmful to the environment; and the use cost is high ; There are heat-affected layers such as white layer on the processed surface

Oil-based working fluid is used in EDM, but there are some problems, such as large heat loss, poor chip removal effect, easy to form white layer due to rapid cooling, and easy to rust the machine tool

In the 1990s, the Kunieda Masonic scholar of Tokyo University of Agriculture and Technology proposed and realized the gas dielectric EDM, which effectively solved the above-mentioned shortcomings of the oil-based working fluid, but the gas dielectric discharge gap is very small, and the requirements for the machine tool servo system are high. The processing is unstable when using ordinary EDM machine tools, which increases the probability of abnormal discharge and reduces the effective pulse utilization rate, so the processing efficiency is low

[0005] The Chinese invention patent with the authorized notification number CN106695031B discloses an EDM fluid atomization nozzle, which can improve the atomization state, change the discharge gap and discharge channel configuration, and improve the surface quality of the workpiece, but it has the following defects: The atomization effect at the liquid end is poor, and the uniformity of the gas injection in the gas chamber is poor. Higher air pressure is required, and the uniformity of the gas atomization in the mixing chamber is poor; in the process of deep hole processing, the injection angle cannot be fixed in place, and it will cause accumulation Chip deposition and other problems, unstable processing

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