Electric spark milling and mechanical grinding combined machining device

Abstract

The invention discloses an electric spark milling and mechanical grinding combined machining device. The combined machining device comprises a servo system (1), a milling machine chuck (2) connected with the servo system (1), a combined machining cutter (3) connected with the milling machine chuck (2), a rotary table (4) installed under the combined machining cutter (3) and a pulsed power supply (5) connected with the combined machining cutter (3). According to the combined machining device, discharge electrodes and material grinding rods are mounted on an electrode plate, mechanical grinding is carried out while electric discharge machining is conducted, no short out phenomena or arc discharge phenomena exist, electrode losses are even, quality of machining surfaces is good, compensation is easily achieved, machining efficiency is quite high, precision is high, the mirror surface effect can be achieved through machining, swarf removal is facilitated, and the combined machining device can be widely applied to machining insulators, semiconductors and other workpieces.

Description

technical field [0001] The invention relates to an electric discharge machining device, in particular to a composite processing device which can process materials such as insulators and semiconductors by using electric discharge machining and mechanical grinding. Background technique [0002] As a method of EDM, EDM has been a research hotspot since the last century. EDM has its unique advantages and can process various brittle materials with high hardness. [0003] Silicon carbide material is a hard and brittle material. It has the advantages of high specific stiffness, good thermal stability, and light weight. It is the preferred mirror material for space optical remote sensors. With the development of space exploration in various countries, the processing requirements for silicon carbide materials are getting higher and higher. At present, the processing methods of silicon carbide materials mainly include: mechanical grinding, numerical control machining, electric disch...

AI Technical Summary

Problems solved by technology

However, there is a problem of uneven discharge in the current EDM milling process.

And electrode loss is an inevitable problem in EDM. In EDM, if the electrode cannot be compensated in time, the integrity of the machined surface will be poor.

In addition, various factors often affect the normal discharge of electric sparks in the process of EDM. In EDM milling, due to the rotation of the tool, the discharge gap changes with the rotation of the electrode, so it is difficult to grasp the law of electrode loss, and during the process, due to The discharge pulse is uncertain on which part of the electrode to discharge, and the gap between the entire electrode and the workpiece will be highly inconsistent, which will affect the next machining discharge

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