已阅读5页,还剩15页未读, 继续免费阅读
版权说明:本文档由用户提供并上传,收益归属内容提供方,若内容存在侵权,请进行举报或认领
文档简介
附录附录1英文原文MoldhighspeedmillingprocessingtechnologyFirst,forewordInthemodernmoldproduction,alongwithtomodelsartisticandthefunctionmustobtainmoreandmorehigh,modelstheinternalstructuretodesignmoreandmorecomplex,themoldcontourdesigndaybydayisalsocomplex,thefreecurvedsurfaceaccountsfortheproportiontoincreaseunceasingly,thecorrespondingmoldstructurealsodesignsmoreandmorecomplex.Theseallsetahigherrequesttothemoldprocessingtechnology,notonlyshouldguaranteethehighmanufactureprecisionandthesurfacequality,moreovermustpursuetheprocessingsurfaceartistic.Alongwithisunceasinglythoroughtothehighspeedprocessingengineeringresearch,isprocessingtheenginebed,thenumericalcontrolsystem,thecuttingtoolsystem,CAD/especiallyCorrelationtechnologyandsoonCAMsoftwaredevelopsunceasinglyundertheimpetus,highspeedprocessesthetechnologymoreandmoremanytoapplyinthemoldcavityprocessingandthemanufacture.Thenumericalcontrolhigh-speedcuttingprocessingtookinthemoldmanufactureamostimportantadvancedmanufacturetechnology,isthecollectionishighlyeffective,highquality,thelowconsumptioninabodyadvancedmanufacturetechnology.Isoppositeinthetraditionalmachining,itscuttingspeed,enteredtothespeedhadtheverybigenhancement,moreovercutthemechanismnottobesame.Thehigh-speedcuttingcausedthemachiningtohavetheleap,itsspecificpowermetalexcisionrateenhanced30%40%,thecuttingforcereduced30%,thecuttingtoolworkingdurabilityenhanced70%,remainedhotlylargescalereducesintheworkpiececutting,thelowstepshuddervanishednearly.Alongwiththecuttingspeedenhancement,unittimesemi-finishedmaterialsmaterialremovingrateincreased,thecuttingtimereduced,theprocessingefficiencyenhanced,thusreducedtheproductmanufacturecycle,enhancedtheproductmarketcompetitivepower.Atthesametime,thehighspeedprocessingsmallamountenteredquicklycausesthecuttingforcetoreduce,thescraphighspeeddischargedreducedtheworkpiececuttingforceandthethermalloaddistorts,enhancestherigiditytobebadandthethinwallcomponentsmachiningpossibility.Becausecuttingforcereducing,therotationalspeedenhancementcausesthecuttingsystemtheoperatingfrequencytobefarawaytheenginebedthelowstepnaturalfrequency,buttheworkpiecesurfaceroughnessismostsensitivetothelowstepfrequency,fromthisreducedthesurfaceroughness.Inmoldhighhardsteelstock(HRC45HRC65)intheprocessingprocess,usesthehigh-speedcuttingtobepossibletosubstitutefortheworkingprocedurewhichtheelectricalfinishingandrubstruncatespolishes,thushasavoidedtheelectrodemanufactureandthetime-consumingelectricalfinishing,largescalereducedfitterspolishingwithtothrowthelightquantity.Thinwallmoldworkpiecemoreandmoreneedswhichregardingsomemarketsin,thehighspeedmillingalsomaysmoothlycomplete,moreoverinthehighspeedmillingCNCprocessingcenter,amoldattireclampsmaycompletethemultiplexstepofprocessing.Thehighspeedprocessingtechnologyhashadthehugeinfluencetothemoldprocessingcraft,changedthetraditionalmoldprocessingtousetheannealing-millingprocessing-heattreatment-torubtruncatesortheelectricsparkmachining-manuallypolishes,polishesandsoonthecomplexlongtechnicalprocess,evenmightusethehigh-speedcuttingprocessingsubstitutionoriginalcompleteworkingprocedure.Thehighspeedprocessingtechnologybesidesmayapplyinthehardmoldcavitydirectprocessing(inparticularhalfprecisionworkandprecisionwork),inEDMaspectandsoonelectrodeprocessing,fasttypemanufacturealsoobtainedthewidespreadapplication.Themassproductionspracticeindicatedthat,theapplicationhigh-speedcuttingtechnologymaysaveinthemoldfollowingprocessing80%handworktogrindthetimeapproximately,savestheprocessingcostexpensenearly30%,themoldfaceworkprecisionmayreach1m,thecuttingtoolcuttingefficiencymayenhance1time.Second,highspeedmillingprocessingenginespindleThehigh-speedcuttingtechnologyisoneofmachiningtechnologymaindevelopmentdirections,italongwithfoundationtechnologytheandsoonCNCtechnology,microelectronictechnology,newmaterialandnewstructuredevelopmentbutstepsahigherstair.Becausethemoldprocessesparticularaswellashighspeedprocessingtechnologyowncharacteristic,(processedenginebed,numericalcontrolsystem,cuttingtooltothemoldhighspeedprocessingrelatedtechnologyandthecraftsystemandsoon)proposedprocessedahigherrequestcomparedtothetraditionalmold.1.HighstableenginespindlesstrutpartThehigh-speedcuttingenginelatheandsoonsupportstheparttobesupposedtohaveverywellmoves,thestaticrigidity,hotrigidityandbestdampingcharacteristic.Themajorityofenginebedsallusehighgrade,thehighrigidityandGaoKangzhangthegrayirontookthestrutpartmaterial,someenginebedcompaniesalsoincreasethehighdampingcharacteristicinthefoundationpolymerconcrete,byincreasesitsvibration-proofandthethermo-stability,thisnotonlymayguaranteetheenginebedprecisionisstable,alsomaypreventwhencuttingthecuttingtoolinspirestrembles.Usestheenclosedlathebeddesign,theoverallcastinglathebed,thesymmetricallathebedstructureandhasthedenselycoveredstiffenerandsoonalsoenhancestheenginebedstableimportantmeasure.Someenginebedcompaniesresearchanddevelopmentdepartmentsindesignprocess,butalsousesthemodalityanalysisandthefiniteelementstructurecomputationandsoon,optimizedthestructure,stablycausestheenginebedstrutparttobereliable.2.EnginespindlesmainaxleThehighspeedenginebedmainaxleperformanceistherealizationhigh-speedcuttingprocessingimportantcondition.Thehigh-speedcuttingenginebedmainaxlerotationalspeedscopeis10000100000m/Min,themainaxlepowerisbiggerthan15kW.Isnotbiggerthan0.005mmthroughthemainaxlecompressedairoraxialplaybetweenthecoolingsystemcontrolhiltandthemainaxle.Alsorequeststhemainaxletohavethefastverticalspeed,toassigntheperformancewhichthepositionisfaststops(namelytohaveextremelyhighangleadditionandsubtractionspeed),thereforethehighspeedmainaxleoftenusestheliquidstaticpressurebearingtype,theairstaticpressurebearingtype,thethermo-compressionnitridingsilicon(Si3N4)theceramicbearingmagnetismaerosolbearingtypeiso-structuralismform.Lubricatesusestechnologyandsoonoilgaslubrication,splashlubrication.Themainaxlecoolsusesthemainaxleinteriorwatercoolinggenerallyoraircooled.3.TheactuatessystemoftheenginespindleInordertosatisfythemoldhighspeedprocessingtheneed,highspeedprocessestheenginebedtheactuationsystemtobesupposedtohavethefollowingcharacteristic:(1)highenteringforspeed.Theresearchindicatedthat,regardingtheminordiametercuttingtool,enhancestherotationalspeedandeachtoothentersforthequantityisadvantageousinreducesthecuttingtoolattrition.Atpresentcommonlyusedenteringforthespeedrangeis2030m/Min,likeusesleadsgreatlytheballbearingguidescrewtransmission,entersmayreach60m/min;Usesthestraightlineelectricalmachinerythenmayenabletoachieve120m/min.(2)highacceleration.Hasthegoodaccelerationcharacteristictothethreedimensionalcomplexcurvedsurfacesilhouettehighspeedprocessingrequestactuationsystem,therequestprovidesthedriverwhichthehighrapidadvanceorprogressgives(toenterspeedapproximately40m/min,the3Doutlineprocessingspeedis10m/Min),canprovide0.4m/S2to10m/Thes2accelerationandreducesthespeed.Theenginebedmanufacturermostlyusestheentireclosedlooppositionservo-controlslightlytolead,thegreatsize,thehighgradeballbearingguidescreworleadsgreatlymanyguidescrews.Alongwiththeelectricalmachinerytechnologydevelopment,theadvancedstraightlineelectricmotoralreadywaspublished,andthesuccessappliedintheCNCenginebed.TheadvancedstraightlinedirectmotordriveenabletheCNCenginebednolongertohavethemassinertia,inadvance,questionandsoonlagandvibration,speduptheservospeedofresponse,increasedtheservo-controlprecisionandtheenginebedprocessingprecision.4.NumericalcontrolsystemTheadvancednumericalcontrolsystemisguaranteedthemoldcomplexcurvedsurfacehighspee
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。
最新文档
- 42CrMo钢拉杆矫直开裂分析
- 3D打印零件变形分析
- 2022年新课标下数学教学策略探究-以“一次函数”大单元为例
- 2018全国图书情报与档案管理研究生教育与高层次人才培养学术论坛在北京召开
- 2,1,3-苯并噻二唑类溴化物的合成及其性质研究
- 皮肤科抗菌药物治疗的规范化管理
- 企业员工健康培训记录
- 园林植物病虫害防治行业动态
- 高血压药物在肾脏疾病患者中的应用
- 柑橘病虫害防治:守护果实的关键
- 【格力电器公司税收筹划方案设计(5000字论文)】
- 火花塞检查与更换教案
- 刻制印章制度
- 滑坡灾害应急救援抢险技术指导书
- 工商银行工银安盛2023年度春季招聘102名人才笔试历年高频考点试题答案带详解
- 肾病综合征的护理
- 重庆医科大学附属第一医院眼科招聘编外文字录入员考试真题2022
- 2022-2023新教科版五年级科学下册全一册全部教案(共28课)
- 读后续写户外惊险之迷路讲义-2023届高三英语写作专项
- 《基本公共卫生服务实务》课程标准
- 活动投标书模板样本
评论
0/150
提交评论