Rotary ultrasonic electrode micro electrolysis spark cutting machining device and method

Abstract

The invention discloses a micro-electrolytic electric spark cutting processing device and method for a rotating ultrasonic electrode. The device includes a pulse power supply, a three-dimensional motion mechanism, an ultrasonic-assisted vibration rotating spindle, a measurement and control unit, and an electrolyte tank. The three-dimensional motion mechanism clamps the ultrasonic-assisted vibration rotation The main shaft enables it to move along the X, Y or Z axis. The end of the ultrasonic-assisted vibration rotating main shaft is equipped with a tool electrode. The electrolyte tank is placed at the lower end of the tool electrode, and an auxiliary anode is arranged inside it; the pulse power supply is the auxiliary anode and the tool electrode. Pulse square wave voltage signal is provided, and the invention reduces the electrolysis current and discharge current through the cooperation of ultrasonic vibration-assisted processing and rotating electrodes, and controls the formation of a thinner and more uniform gas film during the processing process, increasing the discharge time and making the discharge easier to occur. The discharge process is more stable, so as to ensure the high surface quality of the processed workpiece edge, and improve the processing stability and precision; at the same time, the use of spiral cylindrical electrodes instead of wire cutting can cut closed graphics.

Description

technical field [0001] The invention relates to a micro-electrolytic electric spark cutting processing device and method for a rotating ultrasonic electrode. Background technique [0002] Today, with the rapid development of science and technology, non-conductive hard and brittle materials such as glass and ceramics are more and more used in aerospace, national defense, and medical equipment. These materials have high hardness, high brittleness, high oxidation resistance, and Excellent properties such as wear, corrosion resistance, insulation, transparency, and biocompatibility. It is widely used in micro-accelerometers, micro-flow sensors, micro-reaction vessels, micro-pumps and biomedicine. However, due to the characteristics of the material itself, it is difficult to cut and process. The manufacture of its parts has become a research hotspot in modern manufacturing technology. The core issue is how to process efficiently, stably and precisely. [0003] At present, the m...

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Problems solved by technology

However, in this method, the gas film around the electrode wire depends on the buoyancy of the gas. The uneven thickness of the gas film leads to unstable discharge process during processing, and poor processing accuracy and stability. At the same time, this method belongs to open-loop wire cutting and cannot process closed graphics.

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