A soft electrode electric discharge machining device based on liquid metal and porous ceramics

Abstract

The invention provides a soft electrode electrical discharge machining device based on liquid metal and porous ceramic. The device comprises a soft electrode; the soft electrode includes the porous ceramic and the liquid metal; the porous ceramic is provided with a blind hole; the liquid metal is arranged in the blind hole; and the liquid metal permeating out from the porous ceramic is a tool electrode. The device has the following beneficial effects: the liquid metal serves as the tool electrode, and is put in a porous ceramic blind pipe; because of the effect of the porous ceramic, the liquid metal can permeate out from the porous ceramic to attach on the external to form the soft electrode; after once discharge is finished, the liquid metal at the top can be slightly worn; then, under capillary effect, new liquid metal can be continuously permeated out to guarantee continuous discharge; and the porous ceramic dose not participate in spark discharge, so that the shape of the tool electrode cannot be changed, the loss problem of the tool electrode is preferably improved, and the machining precision is improved.

Description

technical field [0001] The invention relates to an electric discharge machining device, in particular to a soft electrode electric discharge processing device based on liquid metal and porous ceramics. Background technique [0002] EDM is a special processing method that uses the electric erosion effect generated by pulse discharge between two electrodes to remove conductive materials. It is also called electric discharge machining or electric erosion machining, and is called EDM in English. Since the EDM method can be used to process materials and complex-shaped workpieces that are difficult to cut by ordinary cutting methods, and there is no cutting force during processing, and no defects such as burrs and tool marks are produced, so this processing method is widely used in processing complex workpieces. Shaped holes, molds and parts of the cavity, and various hard and brittle materials, such as cemented carbide and hardened steel; traditional EDM generally uses copper wit...

AI Technical Summary

Problems solved by technology

Although many scholars have conducted a lot of research, they mainly focus on the estimation, measurement and compensation of electrode loss, and have not fundamentally solved the problem of electrode loss. Moreover, the above-mentioned research methods are relatively complicated, and the results obtained are not very obvious.

Images