会员注册 | 登录 | 微信快捷登录 支付宝快捷登录 QQ登录 微博登录 | 帮助中心 人人文库renrendoc.com美如初恋!
站内搜索 百度文库

热门搜索: 直缝焊接机 矿井提升机 循环球式转向器图纸 机器人手爪发展史 管道机器人dwg 动平衡试验台设计

中英文翻译高速切削加工的发展及需求.doc中英文翻译高速切削加工的发展及需求.doc -- 5 元

收藏

编号:201311171036555476    大小:48.00KB    格式:DOC    上传时间:2013-11-17
  【编辑】
5
关 键 词:
教育专区 外文翻译 精品文档 中英文翻
资源描述:
翻译部分英文原文High-speedmachininganddemandforthedevelopmentofHigh-speedmachiningiscontemporaryadvancedmanufacturingtechnologyanimportantcomponentofthehigh-efficiency,High-precisionandhighsurfacequality,andotherfeatures.ThisarticlepresentsthetechnicaldefinitionofthecurrentstateofdevelopmentofChina'sapplicationfieldsandthedemandsituation.High-speedmachiningisorientedtothe21stcenturyanewhigh-tech,high-efficiency,High-precisionandhighsurfacequalityasabasicfeature,intheautomobileindustry,aerospace,DieManufacturingandinstrumentationindustriesgainedincreasinglywidespreadapplication,andhasmadesignificanttechnicalandeconomicbenefits.contemporaryadvancedmanufacturingtechnologyanimportantcomponentpart.HSCistoachievehighefficiencyofthecoretechnologymanufacturers,intensiveprocessesandequipmentpackagedsothatithasahighproductionefficiency.Itcanbesaidthatthehigh-speedmachiningisanincreaseinthequantityofequipmentsignificantlyimproveprocessingefficiencyessentialtothetechnology.High-speedmachiningisthemajoradvantages:improveproductionefficiency,improveaccuracyandreducetheprocessingofcuttingresistance.Thehigh-speedmachiningofmeaning,atpresentthereisnouniformunderstanding,therearegenerallyseveralpointsasfollows:highcuttingspeed.usuallyfasterthanthatoftheirnormalcutting5-10times;machinetoolspindlespeedhigh,generallyspindlespeedin-20000r/minabove10,000forhigh-speedcutting;Feedathighvelocity,usually15-50m/minupto90m/min;Fordifferentcuttingmaterialsandthewiringusedthetoolmaterial,high-speedcuttingthemeaningisnotnecessarilythesame;Cuttingprocess,bladedthroughfrequency(ToothPassingFrequency)closertothe"machine-tool-Workpiece"systemthedominantnaturalfrequency(DominantNaturalFrequency),canbeconsideredtobehigh-speedcutting.Visibilityhigh-speedmachiningisacomprehensiveconcept.1992.Germany,theDarmstadtUniversityofTechnology,ProfessorH.Schulzinthe52thontheincreaseofhigh-speedcuttingfortheconceptandthescope,asshowninFigure1.Thinkdifferentcuttingtargets,showninthefigureofthetransitionarea(Transition),tobewhatiscommonlycalledthehigh-speedcutting,Thisisalsothetimeofmetalcuttingprocessrelatedtothetechnicalstaffarelookingforwardto,orisexpectedtoachievethecuttingspeed.High-speedmachiningofmachinetools,knivesandcuttingprocess,andotheraspectsspecificrequirements.Severalwerefromthefollowingaspects:high-speedmachiningtechnologydevelopmentstatusandtrends.Atthisstage,inordertoachievehigh-speedmachining,generalwiringwithhighflexibilityofhigh-speedCNCmachinetools,machiningcenters,Byusingadedicatedhigh-speedmilling,drilling.Theseequipmentincommonis:Wemustalsohavehigh-speedandhigh-speedspindlesystemfeedingsystem,Cuttingcanbeachievedinhigh-speedprocess.High-speedcuttingwiththetraditionalcuttingthebiggestdifferenceisthat"Machine-tool-workpiece"thedynamiccharacteristicsofcuttingperformanceisstrongerinfluence.Inthesystem,themachinespindlestiffness,griporform,alongknifeset,spindleBroach,torquetoolset,Performancehigh-speedimpactareimportantfactors.Inthehigh-speedcutting,materialremovalrate(MetalRemovalRate,MRR),unittimethatthematerialwasremovedvolume,usuallybasedonthe"machine-tool-workpiece"whetherProcessingSystem"chatter."Therefore,inordertosatisfythehigh-speedmachiningneeds,wemustfirstimprovethestaticanddynamicstiffnessofmachinespindleisparticularlythestiffnesscharacteristics.HSCreasonatthisstagetobesuccessful,averycrucialfactoristhedynamiccharacteristicsofthemasterandprocessingcapability.Inordertobetterdescribethemachinespindlestiffnesscharacteristicsoftheprojectpresentednewdimensionlessparameter-DNvalue,usedfortheevaluationofthemachinetoolspindlestructureonthehigh-speedmachiningofadaptability.DNvalueoftheso-called"axisdiameterperminutespeedwiththeproduct."ThenewlydevelopedspindlemachiningcenterDNvalueshavebeengreatoveronemillion.Toreducetheweightbearing,butalsowithanarrayofsteelproductsthantothemuchmorelightceramicballbearings;BearingLubricationmostimpressivemannermixedwithoillubricationmethods.Inthefieldofhigh-speedmachining.haveairbearingsandthedevelopmentofmagneticbearingsandmagneticbearingsandairbearingscombinedconstitutethemagneticgas/airmixingspindle.Feedthemachinesector,high-speedmachiningusedinthefeeddriveisusuallylargerlead,multiplehigh-speedballscrewandballarrayofsmall-diametersiliconnitride(Si3N4)ceramicball,toreduceitscentrifugalandgyroscopictorque;Byusinghollow-coolingtechnologytoreduceoperatingathighspeedballscrewastemperaturegeneratedbythefrictionbetweentheleadscrewandthermaldeformation.Inrecentyears,theuseoflinearmotor-drivenhigh-speedsystemofupto''SuchfeedsystemhasremovedthemotorfromworkstationstoSlideinthemiddleofallmechanicaltransmissionlinks,ImplementationofMachineToolFeedSystemofzerotransmission.Becausenolinearmotorrotatingcomponents,fromtheroleofcentrifugalforce,cangreatlyincreasethefeedrate.LinearMotorAnothermajoradvantageofthetripisunrestricted.Thelinearmotorisaverytimeforacontinuousmachineshopinpossessionofthebed.Resurfacingoftheverymeetingwhereaveryearlystagemovementcango,butthewholesystemofuptothestiffnesswithoutanyinfluence.Byusinghigh-speedscrew,orlinearmotorcangreatlyenhancemachinesystemofuptotherapidresponse.Themaximumaccelerationlinearmotorsupto2-10G(Gfortheaccelerationofgravity),thelargestfeedrateofupto60-200m/minorhigher.2002world-renownedShanghaiPudongmaglevtrainprojectofmaglevtracksteelprocessing,UsingtheShenyangMachineToolGroupHoldingsLimitedMcNairfriendshipcompanyproductionplantsintoextra-longhigh-speedsystemforlarge-scaleprocessingcentersachieve.Themachinefeedingsystemforthelinearguideandrackgeardrive,thelargesttablefeedrateof60m/min,Quicktripof100m/min,2gacceleration,maximumspeedspindle20000r/min,themainmotorpower80kW.X-axisdistanceofupto30m,25mcuttinglongmaglevtracksteelerrorislessthan0.15mm.MaglevtrainsforthesmoothcompletionoftheprojectprovidedastrongguaranteefortechnologyInaddition,thecampaignmachineperformancewillalsodirectlyaffecttheprocessingefficiencyandaccuracyofprocessing.Moldandthefreesurfaceofhigh-speedmachining,themainwiringwithsmallcutdeepintomethodsforprocessing.Machinerequirementsinthefeedrateconditions,shouldhavehigh-precisionpositioningfunctionsandhigh-precisioninterpolationfunction,especiallyhigh-precisionarcinterpolation.Arcprocessingistoadoptlegislationorthreadmillingcuttermoldormachiningparts,theessentialprocessingmethods.CuttingToolsToolMaterialdevelopmenthigh-speedcuttingandtechnologicaldevelopmentofthehistory,toolmaterialiscontinuousprogressofhistory.Therepresentationofhigh-speedcuttingtoolmaterialiscubicboronnitride(CBN).FaceMillingCutteruseofCBN,itscuttingspeedcanbeashighas5000m/min,mainlyforthegraycastironmachining.Polycrystallinediamond(PCD)hasbeendescribedasatoolofthe21stcenturytool,Itisparticularlyapplicabletothecuttingaluminumalloycontainingsilicamaterial,whichislightweightmetalmaterials,highstrength,widelyusedintheautomobile,motorcycleengine,electronicdevicesshell,thebase,andsoon.Atpresent,theuseofpolycrystallinediamondcutterFaceMillingalloy,5000m/minthecuttingspeedhasreachedapracticallevel.Inadditionceramictoolalsoappliestograyironofhigh-speedmachining;ToolCoating:CBNanddiamondcutter,despitegoodhigh-speedperformance,butthecostisrelativelyhigh.Usingthecoatingtechnologytomakecuttingtoolisthelowprice,withexcellentmechanicalproperties,whichcaneffectivelyreducethecost.Nowhigh-speedprocessingofmillingcutter,withmostofthewiringbetweentheTi-A1-Ncompositetechnologyforthewayofmulti-processing,Ifpresentinthenon-ferrousmetaloralloymaterialdrycutting,DLC(DiamondLikeCarbon)coatingonthecutterwasofgreatconcern.Itisexpectedthatthemarketoutlookisverysignificant;Toolclampingsystem:Toolclampingsystemtosupporthigh-speedcuttingisanimportanttechnology,Currentlythemostwidelyusedisatwo-facedtoolclampingsystem.Hasbeenformallyinvestedasacommoditymarketatthesameclampingtoolsystemare:HSK,KM,Bigplus.NC5,AHOsystems.Inthehigh-speedmachining,toolandfixturerotaryperformanceofthebalancenotonlyaffectstheprecisionmachiningandtoollife.itwillalsoaffectthelifeofmachinetools.So,thechoiceoftoolsystem,itshouldbeabalancedselectionofgoodproducts.ProcessParametersCuttingspeedofhigh-speedprocessingofconventionalshearvelocityofabout10times.Foreverytoothcutterfeedrateremainedbasicallyunchanged,toguaranteepartsmachiningprecision,surfacequalityanddurabilityofthetool,Feedvolumewillalsobeacorrespondingincreaseabout10times,reaching60m/min,Someevenashighas120m/min.Therefore,high-speedmachiningisusuallyprecludetheuseofhigh-speed,feedanddepthofcutsmallcuttingparameters.Duetothehigh-speedmachiningcuttingcushiontendtobesmall,theformationofverythinchiplight,Cuttingputtheheatawayquickly;Ifthewiringusinganewthermalstabilitybettertoolmaterialsandcoatings,Usingthedrycuttingprocessforhigh-speedmachiningistheidealtechnologyprogram.High-speedmachiningfieldofapplicationFlexibleefficientproductionlineToadapttotheneedsofnewmodels,autobodypanelmoldsandresin-preventionblocktheformingdie.mustshortentheproductioncycleandreducethecostofproductionand,therefore,wemustmakegreateffortstopromotetheproductionofhigh-speeddieintheprocess.SAICaffiliatedwiththecompanythat:Comparedtothepast,finishing,furtherprecision;thesametime,thesurfaceroughnessmustbemet,thebendingofprecision,thisshouldbesubjecttoappropriateintensivemanualprocessing.Duetotheextremelyhighcuttingspeed,andthelastfinishingprocesses,theprocessingcycleshouldbegreatlyreduced.Toplayformachiningcentersandboringandmillingmachiningcentercategoryrepresentedbythehigh-speedmachiningtechnologyandautomatictoolchangefunctionofdistinctionsPotentialtoimproveprocessingefficiency,theprocessingofcomplexpartsusedtobeconcentratedasmuchaspossiblethewiringprocess,thatisafixtureinachievingmultipleprocessescentralizedprocessinganddilutethetraditionalcars,milling,boring,Threadprocessingdifferentcuttingthelimitsoftechnology,equipmentandgivefullplaytothehigh-speedcuttingtoolfunction,NCiscurrentlyraisingmachineefficiencyandspeedupproductdevelopmentinaneffectiveway.Therefore,theproposedmulti-purposetoolofthenewrequirementscallforatooltocompletedifferentparts
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. 人人文库网仅提供交流平台,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。
0条评论

还可以输入200字符

暂无评论,赶快抢占沙发吧。

当前资源信息

4.0
 
(2人评价)
浏览:31次
英文资料库上传于2013-11-17

官方联系方式

客服手机:17625900360   
2:不支持迅雷下载,请使用浏览器下载   
3:不支持QQ浏览器下载,请用其他浏览器   
4:下载后的文档和图纸-无水印   
5:文档经过压缩,下载后原文更清晰   

相关资源

相关资源

相关搜索

教育专区   外文翻译   精品文档   中英文翻  
关于我们 - 网站声明 - 网站地图 - 友情链接 - 网站客服客服 - 联系我们
copyright@ 2015-2017 人人文库网网站版权所有
苏ICP备12009002号-5