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Indexed by:期刊论文

Date of Publication:2022-06-30

Journal:大连理工大学学报

Affiliation of Author(s):机械工程学院

Issue:2

Page Number:188-193

ISSN No.:1000-8608

Abstract:Electrode rotation is an effective method to improve machining efficiency in micro-EDM (electrical discharge machining) process. The motion state of working fluid, which surrounds the revolving electrode as dielectric, is the key influence factor for micro-EDM discharge status and machining efficiency. Based on the kinematic partial differential equation of viscous fluid, the mechanism model of working fluid around the revolving electrode is proposed. Moreover, calculation and simulation of flow field are conducted by FLUENT software. The experimental results indicate that the flow status of working fluid in discharge gap is laminar flow. According to the obtained flowing law and dynamic balance theory of particle in the flow field, it is found that the distribution of interelectrode discharge debris is only related to the debris size. A new way of changing the debris size by adjusting discharge parameters is presented to improve the gap discharge status, which provides the basic theory for choosing the proper discharge parameters.

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