Spark erosion equipment with ultrasonic assistance

Abstract

The invention discloses spark erosion equipment with ultrasonic assistance. The spark erosion equipment comprises a material carrying cabin and an electrode base table, wherein a material plate and anultrasonic generating device are arranged in the material carrying cabin, the electrode base table comprises a displacement driving source and an electrode device, the electrode device comprises a base plate, an electrode base and an oil atomizing spraying mechanism, the oil atomizing spraying mechanism comprises an annular oil storage chamber and an annular air spraying chamber, circular tangential feeding pipe openings are formed in the peripheral wall of the annular oil storage chamber and the peripheral wall of the annular air spraying chamber, a material mixing chamber is formed in the bottom of the annular air spraying chamber, a conical spraying channel is formed in the bottom of the material mixing chamber, an annular feeding channel communicating with the mixing chamber is arranged at the bottom of the annular oil storage chamber, and an annular accelerating channel communicating with the mixing chamber is arranged in the annular air spraying chamber. According to the spark erosion equipment, the mode that jet electric spark media are matched with ultrasonic amplitude is adopted, the requirements for accurate discharge channel configuration and efficient removal of electric corrosion products are met, the workpiece machining quality is improved, and the equipment is particularly 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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