Online finishing cutting groove electrode fine discharge machining device and method

Abstract

The invention discloses an online finishing cutting groove electrode fine discharge machining device and method, and relates to the technical field of electromachining. A work fluid system comprises awork groove, a first filter, a first high-pressure pump and a nozzle. A cooling fluid system is arranged on one side of the work fluid system and comprises a cooling groove, a second filter and a second high-pressure pump. A transmission system is arranged on one side of the cooling fluid system and comprises a servo motor, a motor main shaft and a high-speed bearing. The motor main shaft is connected with one end of a tool electrode through a chuck. A groove is formed in the bottom of the tool electrode. A wire electrode for finishing the tool electrode is arranged on one side of the tool electrode. The online finishing cutting groove electrode fine discharge machining device and method break through the bottleneck of the existing particle enhancing metal-based composite material fine discharge machining technology; meanwhile, the tool electrode of the new method has online finishing performance, excellent scrap discharging capability and work fluid updating capability, and the high-precision and high-surface-quality manufacturing bottleneck during existing metal-based composite material fine discharge machining is expected to be broken through.

Description

technical field [0001] The invention relates to the technical field of electrical machining, in particular to a micro electric discharge machining device and a machining method for a slotted electrode capable of online trimming. Background technique [0002] Compared with traditional metal materials, metal matrix composites have higher specific stiffness and specific strength; compared with silicon carbide base materials, they have higher toughness and impact performance. Among metal matrix composites, aluminum matrix composites are the most widely used. Particle-reinforced aluminum matrix composites are composite materials in which aluminum or aluminum alloy is the continuous phase and ceramic particles are the second constituent phase. Aluminum matrix composites The performance depends on the characteristics, content, distribution, etc. of the matrix alloy and the reinforcing phase. Compared with matrix alloys, aluminum matrix composites have many excellent properties. ...

AI Technical Summary

Problems solved by technology

However, in the actual EDM, the size of the particle phase is uneven, and the electrodes such as slotting, edge trimming and polygon have limited chip removal ability for larger-scale particle phases. In addition, these electrodes generally have a large diameter. If online trimming , cannot maintain its dimensional characteristics, and is not suitable for micro-discharge machining

[0007] Some researchers have designed novel tool electrodes such as slotting, chamfering, hollow, and polygonal shapes, in an attempt to promote the discharge of debris such as reinforcement phase particles, improve the processing efficiency of particle-reinforced metal matrix composites, improve processing quality, and reduce electrode loss. etc., but the actual processing effect is not ideal

Since the reinforcement phase of metal matrix composites is generally tens of microns in size, its size exceeds the gap of electric discharge machining, and the reinforcement phase is difficult to be melted and removed by discharge energy, and the gap is easily blocked during processing, making it difficult to process

Images