Programmable nanosecond double-pulse integrated power supply

Abstract

The invention relates to a programmable nanosecond double-pulse integrated power supply which comprises a voltage regulating and rectification circuit and a chopper circuit, wherein the input end of the voltage regulating and rectification circuit is connected with industrial frequency alternating current, the output end of the voltage regulating and rectification circuit is connected with the input end of the chopper circuit and the output end of the chopper circuit is the output end of the power supply; the output end of the chopper circuit is respectively connected with a tool electrode and a processing workpiece; the chopper circuit is connected with a high-frequency control circuit which outputs a control signal to control the output of the chopper circuit so as to control the current direction in the tool electrode and the processing workpiece, and positive and negative pulses as required can be obtained between the tool electrode and the workpiece; the high-frequency control circuit comprises a high-frequency logic control circuit and an amplifying circuit, wherein the high-frequency logic control circuit outputs a high-frequency logic control signal which is amplified by the amplifying circuit to obtain a control signal for controlling the chopper circuit. Compared with prior art, the programmable nanosecond double-pulse integrated power supply of the invention has the advantages of wide pulse-width adjustable range, narrow minimum pulse width and high pulse frequency, is convenient to be set with parameters and easy to access to a micro electrochemical machining computer numerical control system and can realize the online real-time adjustment of power supply parameters.

Description

technical field [0001] The invention belongs to the technical fields of power supply and micro-machining, in particular to a programmable nanosecond double-pulse integrated power supply suitable for micro-electrochemical processing. Background technique [0002] When using ultra-short pulse current with a duration of nanoseconds or less to remove materials, electrochemical machining can limit the electrochemical erosion to the micro-nano size range at the tip of the electrode, greatly limiting the stray corrosion in the erosion, Successfully realize the processing of micron-sized micro-parts, with an accuracy of hundreds of nanometers. As the pulse width decreases, the accuracy improves significantly. [0003] Compared with other micromachining methods, microelectrochemical machining has the characteristics of non-contact, no cutting force, no thermal melting, etc., and has achieved better results in some special micromachining occasions. Using this process, the German Friz...

AI Technical Summary

Problems solved by technology

At present, the micro-electrochemical processing power supply is still in the laboratory stage, and there are still problems such as limited parameter adjustment range and relatively single function.

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