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1、电火花加工技术应用在模具制造中电加工的应用(ApplicationofEDMTechnologyindiemanufacturing)ApplicationofEDMTechnologyindiemanufacturingRelatedtopics:Dietechnology,literaturetime:2010-08-2510:02Intoday'sworld,witheachpassingday,allwalksoflifearedevelopingrapidly.Amongthem,thedevel
2、opmentofmaterialsscienceandthedevelopmentofthemachineryindustryareparticularlyrapid,andthelinksbetweenthetwoindustriesarebecomingmoreandmoreclose.Amongthem,averyspecificperformanceiswiththedevelopmentofmaterialscience,inordertomeettheneedsofsomespecialcirc
3、umstances,alargenumberofhighstrength,highhardness,hightoughness,highbrittleness,hightemperatureandotherspecialpropertiesofdiematerialshavebeenproduced,whichhasbroughtmanydifficultiesandproblemstothetraditional.Withthetraditionalprocessingmethodstomeetthere
4、quirements.Asfortheworkpiecewithcomplexstructures,suchascomplexcavitydieholemodelbycuttingthetraditionalmethodsitisoftendifficulttoachieve,sopeopleintheproductionofsomenewmethods,andsomehavebeenwidelyused.Amongthem,EDMisoneofthem.Itiswidelyusedindieandmoul
5、dmanufacturingindustry.First,themechanismandcharacteristicsofEDMElectricaldischargemachining(EDM)isamethodofmachiningworkpiecesinacertainmediumbymeansofelectricalerosionbetweentheelectrodesofthetoolandthedischargeoftheelectrodesbetweentheworkpieces.Theprin
6、cipleofEDMisshowninthefollowingfigure.Automaticfeedadjustmentdeviceforthe3hydrauliccylinderandpistontokeepdischargebetweenthetoolandtheworkpieceinasmallgap,whenthepulsevoltageappliedbetweenthepoles,thenatthattimeundertheconditionsofrelativetoaminimumgaport
7、heinsulationstrengthoftheweakestbreakdownmediuminthelocalproductionofsparkdischarge,thetoolandtheinstantaneoushightemperaturetheworkpiecesurfacepartialmelting,vaporizationandevenelectricerosionoffasmallpartofthemetal,eachformasmallpits.Thepulseafterdischar
8、ge,throughthepulseinterval,sothattheworkingfluidrecoveryafterinsulation,secondpulsevoltageandaddedtothepoles,andatthetimethedistancebetweentherelativelyrecentorweakestatthebreakdowndischargeandelectricalinsul