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ID:28108466
大小:78.50 KB
页数:9页
时间:2018-12-08
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1、Abstract1.Electrochemicalmachining(ECM电化学加工)isananodicdissolutionprocess(阳极溶解工艺)ofworkpiece(tomachineworkpieces)inaflowingelectrolyte(电解质)wheretheshapeofthetoolascathodeiscopiedintotheworkpieceasanodewiththeremovaloftheanodeionbyion(theshapeofthecathode(ast
2、ool)iscopiedontotheworkpiece(asanode)withtheremovaloftheanodeinions).Duetothetinysizeofmetalions,thismicro-dissolutionprocessbringsECMtremendouspotentialinthemicro-manufacturingfield.Wireelectricaldischargemachining(WEDM线切割)(AsforWireelectricaldischargemach
3、ining(WEDM)),becauseoftoolwear,themetalwirewiththediameterofmorethan30PmmustbeusedasthewireelectrodeofWEDM,andthewiremustmovequicklyforthecompensationofthetoolwear(工具磨损补偿).Therefore,WEDMwillberestrictedinthepotentialofmicromachininginthefuture.(Therefore,WE
4、DMhasgreatlimitationsforitsapplicationsinmicromachininginthefuture.)Wireelectrochemicalmicromachining(WEMM微细电化学线切割加工):whichisthecombinationofelectrochemicalmicromachiningandtheideaofwirecutting,wasproposedasanewmethodofmicromachininginthisdissertation.Becau
5、seofnoelectrodewearinthisprocess,themicrometerortensmicrometerstructurecanbefabricated.Theproposedtechnologycanbeusedinthefieldofaviation,preciseinstrument,biologicalandmedicinalinstrument.Thedissertationconsistedoffivesections,including(Theproposedtechniqu
6、ecanbeusedinthefieldofaviation&aerospaceindustry,precisioninstrument(注意:精密仪器不能译为preciseinstrument),biologicalandmedical(不能用medicinal)instrumentThedissertationconsists(不要用过去时)offivesections,including©1.ThefundamentaltheoryofWEMMwasinvestigated.Firstly,thecha
7、racteristicsofWEMMweresummarized.Secondly,thetheoreticalmodelofWEMMwasbuiltbasedontheBulter-VolmerequationandFaraday’slaws,andthetoplimitofthevelocityoffeedforward(feedrate进给率)wasstudied.2.Atlast,theboundarylayertheoryofmicrofluid(微流体边界层理论)wasintroducedinto
8、theanalysisofthetransportmechanismofmaterialsinthemicroscalegap(微尺度间隙)ofWEMM,andthesolutionofimprovingtheexaminationofmaterialsinmicrogap.(thesolutiontoimprovingthedischargeofmaterialsfromthemicrogap,s
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