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Field jet flow micro electrical discharge machining method

A field jet and electric discharge machining technology, which is applied in electric processing equipment, metal processing equipment, electrode manufacturing, etc., can solve problems such as the inability to generate jet flow, and achieve the effect of simple and reliable device structure

Active Publication Date: 2013-05-08
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the device used in this technology needs to make extremely fine fluid discharge holes on the nozzle, and the device can only be used to discharge liquid droplets, and cannot produce continuous jets

Method used

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  • Field jet flow micro electrical discharge machining method
  • Field jet flow micro electrical discharge machining method
  • Field jet flow micro electrical discharge machining method

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Embodiment 1

[0027] Such as figure 1 As shown, the device includes: a high-voltage power supply 1, a workpiece 2, a workbench 3 for installing the workpiece, an insulating base 4, a motion platform 5, a fixture 6 for installing the nozzle and the liquid reservoir, electrolyte 7, the liquid reservoir 8 and the nozzle 9, where: A represents the part between the workpiece and the nozzle.

[0028] In this embodiment, the electrolyte solution 7 is sodium nitrate (NaNO 3 ) solution, the workpiece 2 is made of stainless steel with flat and smooth surface, the nozzle 9 adopts an industrial dispensing needle with an inner diameter of 200 μm, and the material is stainless steel, the high-voltage power supply 1 is connected between the workpiece 2 and the nozzle 9, and the workpiece 2 is connected to the high-voltage power supply The positive pole of the output terminal 1, and the nozzle 9 is connected to the negative pole of the output terminal of the high-voltage power supply 1. The motion platfo...

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Abstract

Provided is a field jet flow micro electrical discharge machining method of the micro-nano non-traditional machining field. The positive electrode and the negative electrode of a high direct voltage power supply are respectively connected with a machining workpiece and a jet mechanism, and direct voltage is applied, and a high voltage electric field is formed between the machining workpiece and the nozzle of the jet mechanism. Through the adjustment of the distance between the machining workpiece and the nozzle, an electrified liquid drop at the exit end of the jet mechanism is enabled to form Taylor cone and generate intermittent field jet flow at the tip end of the cone, further the gas medium between the jet flow tip end and the workpiece is punctured by the high voltage electric field and electric discharging and heat are generated, and therefore micro corrosion removing processing is achieved. The field jet flow micro electrical discharge machining method can achieve micro electric discharging corrosion removing processing of micron order and even smaller size, a micro electrode is free from being manufactured on line, and after the field jet flow breaks down in an electric discharging process, the field jet flow can be dynamically generated in next cycle, the process circulates repeatedly, the problem of the inherent electrode wear compensation of a normal electrical discharge machining does not exist.

Description

technical field [0001] The invention relates to a method in the field of micro-nano special processing, in particular to a processing method for micro-discharge machining using an extremely fine intermittent field jet as a tool electrode. Background technique [0002] Electrical discharge machining (Electrical Discharge Machining, EDM) is a non-contact processing method, which has the advantages of not being limited by mechanical properties such as the strength and hardness of the workpiece material, and has the advantages of small macroscopic processing force, so it can process various conductive materials with special properties and various A workpiece with complex surface morphology occupies an important position in the field of micromachining. It can obtain the smallest processing and removal unit by controlling the tiny discharge energy, and has the potential of nanoscale processing. [0003] At present, scholars at home and abroad have explored the possibility, techno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23H1/00B23H1/04
Inventor 赵万生康小明许开仙
Owner SHANGHAI JIAO TONG UNIV
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