Ultrafine EDM (Elctron Discharge Machining) machine tool

Abstract

The invention relates to an ultrafine EDM (Elctron Discharge Machining) machine tool which comprises a machine tool main body mounted on a machine tool base. A top connecting plate and a fixing plate are mounted on the machine tool main body and characterized in that a linear guiding rail is arranged on the fixing plate, a servo motor is mounted on the upper end surface of the top connecting plate and connected with a servo motor transmission shaft which penetrates through the top connecting plate and is connected with a slipway fixed at the upper end of the connecting block, the connecting block is arranged on the linear guiding rail and can slide up and down along the vertical direction relative to the linear guiding rail, the fixing plate is mounted below the connecting plate, a rotary main shaft is fixedly mounted at the lower end of the connecting block, a working liquid tank is arranged on the machine tool base below the rotary main shaft, and a monitoring camera head is mounted on the machine tool main body above the working liquid tank. The invention has the advantages of ultrafineness, high performance, modulation, easy operation and maintenance, and the like and can machine fine holes at a small scale.

Description

technical field [0001] The invention relates to an ultrafine electrical discharge machining machine tool, in particular to an ultrafine electrical discharge machining machine tool for machining micropores, and belongs to the technical field of mechanical processing. Background technique [0002] The phenomenon of electrocorrosion was discovered in the 19th century. For a long time, electrocorrosion has been considered harmful, and methods have been continuously studied to avoid it. In the analysis of its principle, the law of electrocorrosion has been mastered, so the use of electrocorrosion to treat metals has appeared. The method by which the material is dimensionally processed. EDM is also called electrical discharge machining. The principle of EDM is based on the electrocorrosion phenomenon during the pulsed spark discharge between the tool and the workpiece (positive and negative electrodes) to remove excess metal to achieve the size and shape of the parts. And surface...

AI Technical Summary

Problems solved by technology

The discharge pulse energy and discharge gap required by micro-EDM are very small. As the depth of micro-hole machining increases, the flow of working fluid between electrodes becomes more and more difficult. Therefore, the electro-erosion products are not easy to be discharged from the processing area, and short circuits and arcs are prone to occur. Discharge, processing stability and processing accuracy will be reduced

When the concentration of electro-corrosion products in the discharge gap reaches a critical value, arc discharge will also be generated between the workpiece and the tool electrode through the working fluid, which will cause loss to both the cathode and the anode

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