CHRS-360烘干机的设计【滚筒式】【含CAD图纸】
收藏
资源目录
压缩包内文档预览：
编号：116451190
类型：共享资源
大小：947.15KB
格式：ZIP
上传时间：2021-03-03
上传人：好资料QQ****51605
认证信息
个人认证
孙**（实名认证）
江苏
IP属地：江苏
45
积分
- 关 键 词：
-
滚筒式
CHRS
360
烘干机
设计
滚筒
CAD
图纸
- 资源描述：
-
喜欢这套资料就充值下载吧。。。资源目录里展示的都可在线预览哦。。。下载后都有，，请放心下载，，文件全都包含在内，，【有疑问咨询QQ:414951605 或 1304139763】
==========================================
喜欢这套资料就充值下载吧。。。资源目录里展示的都可在线预览哦。。。下载后都有，，请放心下载，，文件全都包含在内，，【有疑问咨询QQ:414951605 或 1304139763】
==========================================
- 内容简介：
-
无锡职业技术学院毕业设计说明书外文翻译Althoughonceconsidereda“nontraditional”machiningprocess,EDMhasbeenreplacingdrilling,milling,grindingandothertraditionalmachiningoperationsinmanyindustriesthroughouttheworld.Sinceitsearlydaysasa“tapbusting”methodover50yearsago,EDMhasdevelopedintooneofthemostadvancedmachiningtechnologies.TodaysEDMequipmentusesadvancedComputerNumericalControl(CNC)withuptosix-axessimultaneousoperationandstateof-the-artpowersupplytechnology,whichcanproduceamirrorsurfacefinishand“split-tenth”accuracy.ThetremendousadvancementsinEDMtechnologyhavebeenachievedthroughthecollectiveeffortsofmanydedicatedengineersemployedbythemajorEDMbuildersandbyresearchersfromsomeoftheworldsleadinginstitutionsandresearchcenters.ThisreportprovidesanoverviewoftheresearchstudiesanddevelopmentsoftheseinstitutionsandtheactivitiesofprofessionalsocietiesandotherorganizationsthroughouttheworldthatarecontributingtothecontinuedadvancementsofElectricalDischargeMachining. MechanismsofTechnologyTransferMechanismsofTechnologyTransferAccordingtotheFederalLaboratoriesConsortium,thereareseveralchannelsforbringingaboutthetransferoftechnologyfromgovernmentorprivateresearchcenterstoindustry.Thefollowinglistisasampleofthevariousmechanismsused1.Cooperativeresearchprojectsbetweenindustryandlaboratories2.Workshops,seminars,andbriefings3.Exclusive/non-exclusivelicensing4.Sponsoredresearchwhereindustryreimbursesalabforworkdoneatthefacility.5.Consultingbylabpersonnel. 6.Employeeexchangewhereresearchersfromthelabandindustrytradeassignmentsinareasofmutualinterests. 7.Useoflabfacilitieswherecertaincapabilitiesarenotavailableataparticularcompany. 8.Laboratoryvisitstoshareinformationanddiscusstechnicalproblems.9.Publicationsandotherprintedliterature. 10.Membershipinindustrialaffiliateorganizationsthatareassociatedwithresearchlabs.Asdefinedinitems9and10,oneoftheobjectivesofEDMTechnologyTransfer(EDMTT)hasbeentoprovideamechanismorsourceofgatheringinformationfromresearchcenterswithprojectsrelatingtoEDM,andmakingthisinformationavailabletoanyoneinterestedintheEDMprocess.OnereferencesourcepublishedbyEDMTTisthe“EDMTechnology”volumeseries,whichcontainEDMtechnicalreportsbyuniversities,EDMmanufacturers,orothertechnicalresearchcentersaroundtheworld. InternationalandNationalEDMConferencesandDiscussionForums InanefforttoestablishaforumforthediscussionofEDMresearchanddevelopments,andhelpprovideacourseofinstructioninbasicandadvancedEDMtechnology,severaltechnicalsocietiesandothergroupshaveestablishedinternationalornationalconferencesonEDM. Japan JapanSocietyofElectricalMachiningEngineers(JSEME) Throughoutitsfortyyearhistory,theJSEMEhasbeenthepredominantorganizationanddrivingforcebehindtheresearchanddevelopmentofEDMandthedisseminationofthisinformationinJapan.AllofthemajorJapaneseEDMbuildersanduniversityEDMresearcherspresenttechnicalreportsonthelatestEDMresearchanddevelopmentsattheirannualconferences.AttheJSEME“AllJapanConference”heldinOctober1994,thirty-fivenewEDMreportswerepresented,includingthelatestresearchbyMitsubishi,Sodick,Makino,Hitachi,andtheleadingresearchcentersestablishedatJapaneseuniversities.The“JournaloftheJapanSocietyofElectricalMachiningEngineers”(Japaneselanguageonly)istheirofficialpublicationwhichprovidesthelatesttechnicalinformationontheJapaneseEDMindustry.FromarecentannouncementbyProfessorYasuoKimoto,currentPresidentofJSEME,theSocietywillcoordinateanew“InternationalJournalofElectricalMachining”(IJEM).TheaimsoftheIJEMare:1)topropagatethelatestscientificandtechnologicalnewsinthefieldofelectricalmachiningmethods,2)toexchangeexperiencesinputtingelectricalmachiningintopractice,and3)informaboutthecurrentstate-ofthe-artandsuggestdirectionsoffurtherdevelopment.IJEMeditorialboardmembersincluderepresentativesfromMitsubishi,Sodick,theleadingJapaneseresearchcenters,andwillalsoincludemembersfromoutsideJapan. U.S.A. SocietyofManufacturingEngineers(SME) SMEsponsorsanannualEDMclinicandafundamentalscourse.AmericanSocietyofMechanicalEngineers(ASME)Startingin1985,theProductionEngineeringDivisionofASMEbeganasessiononnontraditionalmachiningduringtheirWinterAnnualMeetingwithEDMasthemajortopicofdiscussion. ModernMachineShop/GardnerManagementBeginningin1989,ModernMachineShopMagazineandGardnerManagementServiceshassponsoredthelargestEDMconferenceandexhibitionintheUnitedStates.EDMTThasattendedalloftheseconferences. NationalInstituteofStandards&Technology(NIST)OrganizedundertheU.S.DepartmentofCommerceTechnologyAdministration,NISThasheldconferencesonthe“MachiningofAdvancedMaterials”andpresentstechnicalinformationonusingEDM. InternationalBeginninginthesixties,the“InternationalInstitutionforProductionEngineeringResearch”hascoordinatedaninternationaldelegationoftheworldsmajorEDMmanufacturersandresearchersforthe“InternationalSymposiumforElectro-Machining”(ISEM).TheInternationalInstitutionforProductionEngineeringResearchisalsoknownofficiallyasCIRP,whichstandsfor“CollegeInternationalpourIEtudeScientifiquedesTechniquesdeProductionMechanique”.ISEMhasbeenaforumofexchangefortechnicalinformationonEDM,Laser,ECMandotherhigh-technologymachiningprocesses.ISEMXIwillbeeldinSwitzerlandandcovertopicsonEDMProcessandPhysics,EDMMachinery,EDMTechnology,EDMControlandEDMApplications. EDMResearchandDevelopmentCenters AlthoughEDMrepresentsonlyasmallportionofthetotalmachinetoolindustryworldwide,thenumberoflaboratoriesthroughouttheworldperformingEDMresearchanddevelopmentstudieshasbeengrowingsteadilyforseveralyears.Themorein-depthandwellorganizedEDMresearchprogramsatvarioustechnicalcentersarefundedbythemajorEDMbuildersorthroughgovernmentresearchgrants.SeveralEDMmanufacturershavealsodonatedmachinesandsuppliestouniversitieswithlimitedfunds,whichhashelpedtoprovideaprogramforfutureengineerstoobtainahands-onunderstandingofthecapabilitiesoftheEDMprocess. ThefollowinginstitutionshaveestablishedresearchanddevelopmentprogramsonEDM.TheyrepresentonlyapartiallistofthelaboratoriesandresearchprojectsthroughouttheworldthatcontributetotheadvancementsinEDMtechnology.InadditiontotheworkatadvancedresearchlaboratoriessetupbythemajorEDMmanufacturers,theworkperformedattheseinstitutionsshouldhaveadirectimpactonfuturedevelopmentsintheEDMindustry. U.S.A. NontraditionalManufacturingResearchCenter,UniversityofNebraska-Lincoln UnderthedirectionofProfessorK.P.Rajurkar,thisinstitutionhasestablishedoneoftheworldsleadingcentersforacademicstudiesandexperimentalresearchinEDMandotherhightechnologymachiningprocesses.CoursestaughtinadvancedmanufacturingprocessescoverabroadrangeoftopicsandprovidethestudentwithanindepthstudyofEDMtechnology.BesidesEDM,about30otheradvancedmanufacturingprocessesarecovered.Thefollowinggraduatelevelcoursedescriptionprovidesasummaryofthesestudies: CourseTitle:AdvancedManufacturingProcesses(IE970)Description: Advancedmanufacturingprocessesprovideanalternative(orsometimestheonlyalternative)formanufacturingcomplexshapesinawidevarietyofmaterials.Thiscoursedealswithtopicsrangingfromtheprinciplesofoperation,totheintegrationoftheseadvancedprocessesintofutureflexiblemanufacturingsystems.Aboutthirty-onenontraditionalmanufacturingprocessesincludingElectricalDischargeMachining(EDM), Electro-ChemicalMachining(ECM),LaserBeamMachining(LBM),AbrasiveJetMachining(AJM),ElectrochemicalArcMachining(ECAM),ElectronBeamWelding,etc.arecoveredinthiscourse.Inthecontextoftheseadvancedmanufacturingprocesses,thefollowingtopicsarecovered.1.ProcessMechanism,ModelingandSimulation 2.SurfaceIntegrity 3.ToolDesign,CAD 4.DesignofRelatedMachineTools 5.AdaptiveControl 6.ExpertSystems,NeuralNetworks,FuzzyLogicApplications7.IntegrationwithinCIMEnvironment 8.Applications 9.EnvironmentalandSafetyIssues Inadditiontotheclasslectures,experimentalprojectsonDie-SinkingEDMandWireEDMarealsorequired. ThefollowinglistofprojectsprovideanoverviewofpastandfutureEDMresearchworkconductedattheUniversityofNebraskasNontraditionalManufacturingResearchCenter. ProjectsConductedOverPastTwoYears EffectofcryogenictreatmentofelectrodeonEDMperformanceThisprojectattemptstostudytheeffectofcryogenictreatmentofworkandtoolelectrodesonEDMprocessperformance.Cryogenictreatmentoftheworkpiecematerialandelectrodes(forEDMandWEDM)wasdonebyRPMCarbide,Inc.ofOhio.Duringcryogenictreatment,thematerialiscooledat77Kfor24hoursandbroughtbacktoambienttemperature.ExperimentsonWEDMhavebeencarriedoutusingtreatedwireanduntreatedwire.Itwasexperimentallyfoundthattheriskofwirerupturewasreducedby30%whenusingcryogenicallytreatedwire.ExperimentalworkonDie-sinkingEDMandWEDMiscontinuing. WireEDMingofPolycrystallineDiamond(PCD)AnexperimentalstudyhasbeencarriedouttodeterminetheeffectsofparametersettingsinastateoftheartWEDmachineonthemachiningperformance.TheWEDMperformanceincuttingdifferentlayersofmaterials,suchasPCDandWC,intheworkpiecehavebeenexperimentallyandtheoreticallydetermined.Themathematicalmodel(s)ofthermalstressforatheoreticalexplanationoftheremovalmechanismofdiamondgrainbasedonthenumericalsolutionofStefanproblemiscontinuing. WEDMofBerylliumCopperAlloysThemainobjectiveofthisprojectistodevelopadatabaseofoptimalmachineparametersettingsformachiningofBerylliumcopperalloysofdifferentheightsduringWEDM.ThisprojectisconductedwithaCharmillesRobofil100WEDmachine.Therelationshipsbetweenthemachinesettingsandmachiningcharacteristicssuchasmachiningspeed,surfaceroughness,andovercutaredeterminedexperimentally.Themachinesettingparametersarechargefrequency,chargecurrent,pulseduration,capacitance,wirespeed,wiretensionandwirematerial.Theoptimizationofparametersettingsconsistsoftwoobjectives,i.e.tomaximizethemachiningspeedandtomaximizesurfacefinish.Adatabaseofinputparametersforbothcriteriaisbeingdeveloped. Studyofdischargedistributionsindie-sinkingEDMusingdividedelectrodesparkdetectionmethodTheprincipalobjectiveofthisprojectistostudytheinfluenceofmachiningparameters(peakcurrentandpulseon-time)andflushingmethodsonsparkcharacteristicssuchassparkingefficiencyandgeometricaldistributionofsparksinthemachininggap.Peakcurrentandpulseon-timechangethemachiningconditionsinthegapleadingtochangesinthesparkingefficiencyandsparkdistribution.Anewmethodofsparkdetectionsystemisemployedtoobtainthesparkdata.Thesolidtoolisdividedintonumberofsmallersectionstoidentifyeachsparkindifferentareasinthegapatdifferentinstants.Thissparkdetectionmethodologycanalsobeeffectivelyusedtofindtheefficiencyofmachiningwhensubjectedtodifferentmachiningconditions. Adaptivecontrolsystemsfordie-sinkingEDMThearcdamageinthedie-sinkingEDMprocessreducesthemachiningproductivity,decreasesthemachinedsurfacequality,andincreasesthemachiningcost.ThemainobjectiveofthisprojectistodevelopadaptivecontrolsystemsforEDMtoimprovetheprocessstability,avoidarcdamage,andincreasethemachiningrate.Inthisproject,adigitalEDMgapmonitorwasdevelopedtopreciselydetectthetimeratiosofgapstatesincludinggapopen,normalspark,transientarc,stablearcandshortcircuit.Theuniquefeatureofthissystemisthehighfrequency(HF)detectingtechnologythatdetectsnotonlytheoccurrenceofarcdamage,butalsothetransientarcregardedastheforecastingsignalofarcdamage.TheHFdetectionisthemostreliablemethodinallEDMarcdamagedetectingtechnologies.Amodelreferenceadaptivecontrolsystemandaself-tuningregulatingsystemforEDMhavebeendeveloped.TheseadaptivecontrolsystemsdetectgapstateparametersthroughtheEDMgapmonitorandcontroltheservofeedinreal-time.Theproductivitywiththesecontrolsystemshasbeenshowntobeimprovedby50%whenmachiningunderpoorflushconditions.AnEDMautojumpingcontrollerusingthePIself-tuningapproachhasalsobeendevelopedonastate-of-the-artMitsubishiK35EDmachine.ThissystemadaptivelyadjuststhecycletimeoftheperiodicalretractionofthemainspindleaccordingtothedetectedEDMgapparameters.Thearcingdamagecanbecompletelyavoided,andtheproductivityisimprovedby50%ascomparedtothemanuallysetjumpingcycletime. AdvancedWire-EDMcontrolsystemIntheWEDMprocess,wirerupturereducesthemachiningrate.Thisproblemiscausedbyhighpowerdensityalongthewire,whichisregardedastheratioofsparkingfrequencytosparkdistributionlengthdeterminedbytheworkpieceheight.Withmostofthestate-of-the-artWEDMequipment,thesparkingfrequencycannotbeon-linemonitoredandcontrolled,andanoptimalpulseoff-timetodeterminethesparkingfrequencyforagivenworkpieceheightisselectedinaccordancewithmanufacturersupplieddatabase.ThemainobjectiveofthisprojectistodevelopanadvancedWEDMmonitoringandcontrolsystemthatmonitorson-linethechangeofworkpieceheightandcontrolthesparkfrequencyatoptimallevels.ArecentlydevelopedcontrolsystemconsistsofadigitalsparkfrequencymonitorandaPCusedasthemaincontrollerwithaninterfaceforpowergeneratorandservosystemcontrol.ThePCmonitorson-linethegapvoltage,sparkfrequency,andthetablefeedratetoidentifytheworkpieceheight.Thissystemregulatesthetablefeedatoptimalratesandadjuststhepulseoff-timeinreal-timetocontrolthesparkfrequencyatoptimallevelsdeterminedbytheidentifiedworkpieceheight.Thesparkfrequencyisalwaysadjustedatasafeandhighlyproductivelevel,andisabletofollowthechangeinworkpieceheighttoavoidwireruptureandtomaintainanoptimalcuttingspeed.Theerroroftheworkpieceheightidentificationis1mmandtheresponseoftheidentificationtochangesinworkpieceheightis1second.Withthiscontrolsystem,proceduresofNCprogrammingandmachineoperationsaresimplified,andthemachineoperatordoesnotneedtoinputtheworkpieceheightdataintothemachineandinsertthepowergeneratorsettingcommandsintotheCNCprogramwhencuttingamultipleheightworkpiece. FutureProjectsattheUniversityofNebraska AbrasiveassistedElectricalDischargeGrindingformachiningadvancedmaterialsThemachiningratewithmechanicalgrindingofadvancedmaterials,includingelectricallyconductiveceramics,sinteredcarbides,andpolycrystallinediamonds(PCD),isverylowduetotheirhighhardnessandtoughness.TheEDMprocessprovidesaneffectivealternativetomachineadvancedmaterials.However,thesurfacequalitygeneratedbyEDMispoorduetotherecastlayerandmicro-cracksonthemachinedsurface.TheobjectiveofthisprojectistodevelopanElectricalDischargeGrinding(EDG)processwithanassistanceofmechanicalabrasiveeffectsforimprovingtheflushingconditionandremovingthedamagedlayerwhenmachiningadvancedmaterials.Duringmachining,thegrindingelectroderotatesinhighspeed,thesparkdischargestakeplaceinthegapbetweentheelectrodeandworkpiece,andthemachininggapiscontrolledbyanEDMservosystem.ThepreliminaryexperimentalstudyindicatesthattheabrasiveeffectnotonlyimprovesthesurfacequalityofEDG,butalsoimprovethegapflushingconditionbyeffectivelyremovingtheerodedchipsandparticles,andprovidinghighernormalsparkratioandbettermachiningstability. Advancedon-linemonitoringandcontrolsystemfordie-sinkingEDMGraphiteelectrodesarepopularfordie-sinkingEDMoperationsinU.S.industriesbecauseofhighermachiningratesandeasyoffabrication.DuringEDMwithgraphiteelectrodes,thearcdamageoccursfrequentlyandisdifficulttoavoid.Themainobjectiveofthisprojectistodevelopanadvancedmonitoringandcontrolsystemfordie-sinkingEDMwhenusinggraphiteelectrodes.Inthisproject,anadvancedandcommercialavailabledigitalEDMmonitorwillbedevelopedtodetectthetimeratiosofgapstates.TheneuralnetworktechnologywillbeusedtoanalyzethegapvoltageandcurrentsignalsandthedataofgapstatescollectedfromtheEDMmonitoringsystem.AneuralnetworkandfuzzylogicalidentificationsystemwillbedevelopedtopredictthearcdamageduringtheEDMprocesswithgraphiteelectrodes.Anadvancedcontrolsystemwillbedevelopedtocontrolon-linethedischargepower,auto-jumpingoftoolelectrode,andtheservosystem. EDMpowergeneratorforadvancedmaterialsWhenusingEDMtomachinethehighthermalresistantmaterialsincludingtungstencarbide,conductiveceramics,PCDandPCB,thedischargewaveformsstronglyinfluencetheprocessperformance.MostcommerciallyavailableEDMpowergeneratorsprovideonlysquaredischargecurrentpulses.However,withsquaredischargepulses,thethermalenergycannotbehighlyconcentrated,therefore,thematerialremovalratesformanyadvancedmaterialsincludingtungstencarbideandconductiveceramicsareverylow.ThisprojectisproposedtodevelopedanEDMpulsegeneratortoprovideparticulardischargewaveformssuitabletomachineadvancedmaterials.TheprototypeoftheproposedpulsepowergeneratorwillbedevelopedtoprovidethetransistorcontrolledRCpulse,multi-levelwaveformswithwiderpeakcurrentandvoltagerangesthancurrentcommerciallyavailableEDMpowergenerators.Acomputercanprogramthedischargewaveformandselectdifferentpulseparameters.TheoptimalwaveformsfordifferentmaterialandmachiningrequirementswillbedeterminedbythetheoreticalstudyofthermalmodelingandanalysisoftheEDMprocessforadvancedmaterials. UniversityofCalifornia/DavisResearchinseveralEDMfields,including(butnotlimitedto)advancedEDMcontrolsystemsaimedatincreasingproductionandreducingoperatorattentionandstudiesinwirebreakageonWEDM. TexasA&MUniversity EDMstudiesondifficulttomachinematerialssuchastungstencarbide/cobaltcomposites,titaniumdiborideorotherceramiccompositematerials. 中文原文一种新技术电火花的加工，尽管电火花加工曾经被认为是非传统加工过程，但是电火花在世界范围内许多工业方面已经取代了钻孔、铣削、磨削和其它传统加工方法。尽管50年以前的早期它是“tapbusting”的方式，但是电火花已经发展成为最先进加工技术之一。现代电火花加工设备运用先进的计算机数字控制，可达六轴同时工作和不同的电源技术。这些能够作为一面镜子高精度完成加工。 来自世界顶尖研究所和研究中心主要的电火花建设者和研究者雇佣的许多专业工程师通过共同努力实现了电火花技术的巨大先进性。这篇报道为学者、研究所的发展、专职社会和世界范围内对电火花的先进性不断做出贡献的其它组织提供了研究纲要。加工技术的转变 根据联邦实验协会调查，从政府、私人研究中心到工厂有许多带来技术转变的渠道。以下就是不同加工技术应用的抽样调查： 1.工业和实验室之间合作性研究项目。 2.车间、研究会和简报。 3.独家的/非独家的许可。4.工厂为工作设备设立实验室进行赞助性研究。 5.咨询实验室人员。 6.实验室和工厂贸易为了相互的利益，职员交换任务。7.在一家具体的公司里，实验室设备使用能力不可获知。 8.实验室参观、分享信息并讨论技术上的问题。 9.出版社和其他的印刷文献。 10.工业成员与那些和实验室相关的组织联合在一起。 如项目9和10所定义的,电火花技术转变(EDMTT)的目的之一是从有关电火花项目的研究中心提供技术或信息源，而且使这些可得信息有利于电火花过程的任何一个环节。由电火花转变技术出版的一个参考信息是电火花技术专栏系列，它包括由大学、电火花制造业者和其它世界各地技术研究中心提供的电火花技术报道。 国际的和国内电火花参考和讨论论坛 为讨论电火花研究和发展建立一个论坛，并且为基本指导课程和先进的电火花技术提供帮助，一些技术社团和其它组织已经建立了关于电火花的国际或国内参考。 日本 日本电力切割工程师社会（JSEME） 尽管JSEME有四十年的历史，但在研究、发展和传播电火花以后，它在日本已经有了优越的组织和驱动力。日本所有主要的电火花建设者和大学的电火花研究员在电火花年度会议上将最近的电火花研究和发展，用技术报告呈现出来。在JSEME，“所有的日本会议”于1994年十月召开，呈现了三十五个新的电火花报告,包括三菱、Sodick、Makino、日立的最新研究和日本大学建立的首要研究中心。 日本电力切割工程师团体的杂志是官方出版社，它提供关于日本电火花工业最新的技术信息。 教授Yasuo的一个最近公告指出，Kimoto，JSEME的现在总统,社会将会 调整为一个新的“电力切割的国际杂志”(IJEM)。IJEM的目的是：1)传播电力切割方法领域最新的科学和科技的新闻，2）交换电力切割用于实践中的经验，3）告知最近的状态和建议将来的发展方向。IJEM社论董事会成员包括从三菱、Sodick和日本首要研究中心的代表，也包括非日本人成员。 美国 制造业工程师的社会(SME) SME赞助一个年度电火花的临床讲义和一个基本课程。 机械工程师的美国社会(ASME) 1985年开始,ASME的生产工程学在年度冬季会上，把电火花作为一个主要的讨论项目，召开了一个关于非传统加工的会议。 现代的机械工场/贾德纳管理 1989年开始,现代机械工厂杂志和贾德纳管理服务赞助了最近的电火花会议和在美国的展览会。EDMTT参加了所有的会议。 国内研究标准和技术(NIST)在商业的美国部门之下组织在美国贸易技术管理组织下,NIST就“先进材料的加工”问题举行了会议，并列举了使用电火花的技术信息。国际的 六十年代开始,“生产工程学研究的国际研究所”为“电加工座谈会”（ISEM）的国际代表团，即世界主要的电火花生产商和研究员进行了调整。生产工程学研究的国际研究所如CIRP一样正式地被大家接受,这代表了“国际学院培养的IEtude科技生产机械学”。ISEM已经是一个电火花、激光、ECM和其它高科技加工技术信息的交换论坛。ISEMXI将会在瑞士举行，它的主题范围包括电火花处理过程和物理学、电火花机械学、电火花科技、电火花控制和电火花应用。 EDM研究和发展中心 虽然电火花只是全世界工业总的加工工具的一小部分，但全世界范围内的关于电火花研究和发展的实验室在近几年内飞速增长。很多技术中心在主要的电火花建设者的集资下或通过政府研究部门的集资，越来越多的电火花研究项目得到更深入和更好的组织。一些电火花制造商为资金有限的大学捐赠了机器，这为将来的工程师获得亲自参与、理解电火花过程的能力提供了帮助。 下列机构已经建立了电火花研究和发展项目。他们只代表了全世界致力于电火花科学技术先进性的实验室的和研究工程的一部分。除了为主要的电火花制造商设立的先进研究实验事工作之外，也为那些对电火花工业的将来发展有直接作用的研究所工作。 美国 非传统的制造业研究中心,内布拉斯加-林肯大学 在教授K.P.Rajurkar的指导下，美国建立了一个研究所，它是全世界电火花和其它高科技加工的学术研究和实验领导中心。先进制造过程的课程的教学覆盖了一系列主题，为深入研究电火花技术的学生提供了帮助。除电火花技术之外,大约覆盖了30个其他的先进制造业加工过程。下列各项课程在一定水平上为这些研究提供一个摘要: 课程名称:先进的制造业加工（IE970） 描述:先进的制造业加工为多种材料制造复杂的形状提供另一选择（或有时称为替代选择）。这课程能够处理从基本操作到将这些先进过程整合为一个复杂的制造系统。包括电火花加工（EDM）、电化学加工（ECM）、激光加工（LBM）、磨料喷射加工（AJM）、电化学电弧加工（ECAM）、电子束焊接等等，这个课程大约覆盖有三十一个非传统制造加工。在先进制造加工的文章中，覆盖了以下主题： 1.机械装置加工，靠模切和模拟 2.表面轮廓 3.工具设计,电脑辅助设计 4.加工工具相关的设计 5.适当的控制 6.专家系统，神经网络,模糊逻辑应用 7.CIM环境整合 8.应用 9.环境的和安全问题 除了课程之外,也需要电火花沉淀和电火花线切割实验项目。 以下所列清单项目为内布拉斯加的大学非传统加工研究中心的过去和将来的电火花研究工作提供了一个纲要。 过去两年计划电火花运行时，电极的低温处理的效果 这个计划尝试研究电火花运行时，工具电极的低温处理效果。在俄亥俄州的公司，工件材料和电极的低温处理是由PRM碳化物完成的。在低温处理时候，材料在77K温度24小时冷却到周围环境的温度。已经完成了正确对待已处理的金属线和未处理的金属线的WEDM实验。实验时发现，低温处理金属线，使金属线破坏的危险性减小了30%。关于电火花沉淀和WEDM的实验性工作一直在继续。 复晶体金刚石的电火花线切割(PCD) 已经实行的一项实验性研究决定了WED加工过程在运行时参数设置的效果。WEDM运转在切削材料的不同层面时，在工作件中，像PCD和WC这样的材料,是由实验和理论共同决定的。热应力的数学模型一直在继续，它理论上解释了基于Stefan数学问题的金刚石晶粒机械切削。 铍铜合金的WEDM 这个计划的主要目的是发展一个在WEDM的时候，为不同硬度的铍铜合金选择最佳加工参数设置的而设立的数据库。这个计划由CharmillesRobofil100机器引导。机器设定和切削特点之间的关系如同加工速度、表面粗糙度、切削余量一样，都是由实验决定的。机器参数设定需要知道周期、当前状态、脉动持续时间、功率、金属线速度、金属线拉力和金属材料。
- 温馨提示:
1: 本站所有资源如无特殊说明，都需要本地电脑安装OFFICE2007和PDF阅读器。图纸软件为CAD,CAXA,PROE,UG,SolidWorks等.压缩文件请下载最新的WinRAR软件解压。
2: 本站的文档不包含任何第三方提供的附件图纸等，如果需要附件，请联系上传者。文件的所有权益归上传用户所有。
3.本站RAR压缩包中若带图纸，网页内容里面会有图纸预览，若没有图纸预览就没有图纸。
4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
5. 人人文库网仅提供信息存储空间，仅对用户上传内容的表现方式做保护处理，对用户上传分享的文档内容本身不做任何修改或编辑，并不能对任何下载内容负责。
6. 下载文件中如有侵权或不适当内容，请与我们联系，我们立即纠正。
7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。
人人文库网所有资源均是用户自行上传分享，仅供网友学习交流，未经上传用户书面授权，请勿作他用。
川公网安备: 51019002004831号