Electric arc micro-explosion internal and external flushing device and processing equipment

Abstract

The invention discloses an electric arc micro-explosion internal and external flushing device and processing equipment. The electric arc micro-explosion internal and external flushing device comprises a knife rest body, a platform structure, a tool electrode and a liquid collecting cover. The knife rest body is provided with an inlet end and an outlet end which are oppositely arranged; the platform structure is fixed in the knife rest body, a liquid cavity is formed between the platform structure and the inlet end, a mounting channel is formed in the platform structure, and an outer flushing fluid channel is formed in the platform structure; the tool electrode is arranged in the mounting channel, an inner flushing fluid channel is formed in the tool electrode, one end of the inner flushing fluid flow channel communicates with the liquid cavity, and the other end of the inner flushing fluid flow channel penetrates through the tail end of the tool electrode; and the liquid collecting cover sleeves the periphery of the tool electrode, and one end of the liquid collecting cover communicates with the outer flushing fluid channel, the other end of the liquid collecting cover and the side wall of the tool electrode are enclosed to form an annular gap, and the minimum value of the total area of the cross section of the outer flushing fluid channel is larger than that of the annular gap. According to the technical scheme, the processing efficiency of arc micro-explosion processing is improved, and the processing effect is improved.

Description

technical field [0001] The invention relates to the technical field of arc micro-explosion processing, in particular to an arc micro-explosion internal and external flushing device and processing equipment including the arc micro-explosion internal and external flushing device. Background technique [0002] In the field of arc micro-explosion machining, the discharge area between the tool electrode and the workpiece needs to meet the following three conditions: ① Effective arc interruption control; ② Rapid cooling of molten metal; ③ Rapid throwing off of removed materials. [0003] In the existing technology, the processing method of electrode rotation and internal flushing is generally adopted to meet the above conditions. The high-speed and high-pressure flushing liquid passes through the inside of the electrode fixture, flows out from the lower end of the high-speed rotating tool electrode to the discharge area, and utilizes mechanical movement and A hydrodynamic arc inte...

AI Technical Summary

Problems solved by technology

This solution can ensure good processing results for most machining forms. However, when arc micro-burst machining is used for side milling, grooving, etc., where the discharge machining between the side of the tool electrode and the workpiece is used, due to the gap between the lower end of the tool electrode and the workpiece If it is too small, the flushing fluid is forced to be blocked at the lower end, and there is not enough flushing fluid on the side of the electrode, so that the arc breaking ability of the discharge arc is poor, the cooling of the molten metal is insufficient, and it is difficult to achieve efficient arc micro-explosion processing effect

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