EDM device and EDM machine tool based on moving electric arc

Abstract

The invention discloses an electric spark machining device and electric spark machining tool based on a motion arc. The electric spark machining device comprises a rotating electrode unit, an electricenergy conveying unit, a liquid flushing unit and a spindle cooling unit, wherein the rotating electrode unit includes a rotating driving mechanism, a hollow spindle, a hollow connecting shaft and atubular electrode, the hollow spindle, the hollow connecting shaft and the tubular electrode are connected in sequence, the interiors of the hollow spindle, the hollow connecting shaft and the tubularelectrode form a medium channel, and the rotating driving mechanism is mounted on the hollow spindle of a spindle mounting seat in a driving mode; the electric energy conveying unit includes a directcurrent power supply, a protective resistor and a conductive sliding ring, the conductive sliding ring is arranged outside the hollow spindle in a sleeving mode, a cathode of the direct current powersupply is connected with the conductive sliding ring, and a positive electrode is connected with a workpiece through the protective resistor; the liquid flushing unit communicates with the hollow spindle through a rotating joint; and the spindle cooling unit communicates with a cooling cavity in the spindle mounting seat. The electric spark machining device can be applied to the field of electricspark machining, the stable arc of high-speed motion can be formed between the tubular electrode and the workpiece, and the motion arc can conduct high efficiency corrosion removing on the workpiece.

Description

technical field [0001] The invention relates to the technical field of electric discharge machining, in particular to an electric discharge processing device based on a moving electric arc and an electric discharge processing machine tool including the electric discharge processing device. Background technique [0002] EDM technology refers to the processing of materials in the medium by using the electric corrosion phenomenon during the pulsed spark discharge between the two poles (tool electrode and workpiece electrode), so that the size, shape and surface quality of the parts meet the predetermined requirements. method. Although the EDM technology has been developed for more than half a century, it has successfully evolved into various application forms. Although they vary greatly in application, they all use pulse discharge in terms of material removal methods. This is because, according to the traditional EDM principle, a complete discharge cycle consists of four stag...

AI Technical Summary

Problems solved by technology

However, all these attempts are based on pulse power supply, and they have not changed the inefficient material removal method of point-by-point and intermittent EDM, so they can only alleviate the inefficiency of EDM to a certain extent. status

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