外文翻译--机床结构及工艺.doc

附录英文原文ConstructureandTechnologyofMachineToolsSize,BedandTailstockofEnginelatheSIZELathesizeisdeterminedbyswingandlength,ofthebed.Theswingistwicethedistancefromthelivecenterpointofthespindletothetopofthebed,orthelargestdiameterthatcanbeturnedoverthewaysofalathe.Forexample,a10-in,lathewillruina10-in,-diameterworkpieceovertheways,butnotoverthecar-riagecross-feedslide.Sometimestwonumbersareusedtoindicateswing.Thelengthofthebedincludestheparttheheadstockrestson.Itdeterminesalsothedistancebetweencenters.Atypicalsizemightbea3-footbedwithadis-tanceof23in.betweencenters.Lathebedsareofferedinmanydifferentlengthsforeachavailableswingsize.Alatheshouldhaveaswingcapacityanddistancebetweencentersthatisatleast10percentgreaterthanneededtodoanyjobthatmayberequired.Standardlathescomeinavarietyofdesignsandstylesandmayhaveaswingrangingfromabout9to53in.Theyaregenerallyclassifiedassmall,mediumswing,andheavyduty.BedbodyThebedbodyisthebaseoflather,is1.Itisspineoflather,canusetoinstallorpropupallofotherparts.Belocatedonabedbodycopingofistoleadatrack.GeneralmoreexpensivelatherfromVtypepeaceleadatracktocombine,butmorethelatherofcheapnessbeonlyeventoleadatrack.Leadthestructureoftracktobedifferentwiththemanufacturing.SomemanufactoryadoptiondemandcanreplaceoftheCuifiresteelleadatrack,butothersomemanufactoryadoptionandbedbodytheflamesCuifireoftheintegralwholeleadatrack.Leadhowtheaccuracyoftrackisthefunctionofdecisionlather.Leadthetrackhavetobeaccuratebutnicety,inordertomakeprincipalaxisbox,tailandthebedsaddlealwaysaccuratefixedposition.DirectBelocatedonunderthebedbodypioneertrackofis1.1matchwiththisNieandmaketocanmovebedsaddlewhileturningtobeginaround.TailThetailcanfollowabedbodytoleadatracktomoveandreigntoplacetoptocliptight.ItconstitutetofromtwoZhupiecenamelymainparts.Thelowerpartpieceisdirecttodependinleadingatrack,upperpartpiecedependonthelowerpartpiece,regulatebolttwopartsconnecttogether.Theupperpartpiececaninfrontandbackturntomovetocarryonbyadjustingatailanawldegreeacartopare,orre-adjustatailcentertocarryonstraightlinethecarpare.Whileturningtomoveatailahandround,tailsettubenamelyslipperybodycanintheupperpartpieceoutsidemove.Tailsetthetubehave1andcanpacktoporotherknife(likeaugerandJiaoknife)ofawlbore.Onlysetwithtailthetubehavehomologytheknifeoftheawldegreethencanpackinthesetthetubebore.Wanttounloadaknifeinsidetubefromtheset.aslongasfallbackahandroundcanmakeasetoftubesendbackinsideupperpartpiece.CanmoveasettheLuopoleofthetubetocarrylooseopenanawlhandle,socanunloadknife.Havetocautionavoidanusageunwellgotogetherwithofawlbody.Ifappearanawlbodyunwellgotogetherwith,cantusagehandroundLuopoletounloadaknife.Wantsincenotthedamageheartstalkagaincanunloadknife,canusageunderneathtwokindsofoneofthemethods:(1)Tailsetthebodywithnamelyslipperytubeturnoneshortdistanceandopenthreeclawcardthecarddishofthedishclaw,forwardglidetailtheawlbodywhichmaketoblockcliptightinthecarddishtheclaw,tightthesolidtailcliptightplank,fallbackthehandroundcanunloadknifeinsidetubefromtheset.(2)Thesparepartsblockedinthetailthesetthetubecarryadepartmenttoaddthecartfulbedcardclaw,useonesmallhammerlightKouthiscardclaw,canunloadaknife.Thebeardmatchheartwhilefallingbackatailahandround.IfbackaLuopolebitterendwiththeverybigdintforthemeetingYatolive,sowillmakeinnerpartthethreadtransformevendamage.GeneralcantmoveahandroundbyhandandforwardwhentheLuopoleblock.Occurrencethiskindofcircumstance,preventfromfurtherdamageofhadbetterwayisinhandroundtopputabigliveawrench,forwardmovehandround.Willnevertheabilityusethehandhandlethatthehammersonknockahandround.TheprincipalaxisboxofcommonlatherPrincipalaxisboxthemodulebetightsolidleftcarryinthelather.Itisconstitutebytheprincipalaxisboxprincipalaxis,Bemadetheprincipalaxisrevolvebythewheelgearorthewheelgearsetandtheleatherbeltround.Theprincipalaxishavecanpacktoclipandturntobegintoworkapieceofenclosure.Theprincipalaxishavemanyturnsoon.Principalaxisboxfrom3-5accept.Becauselathertopprocessofworkpiecetheaccuracybedecidedbyaccuracyofcliptheprincipalaxisaxisofrevolutionofholdtheworkpiece,pasthavetoverycarefullymanufacturingandinstallprincipalaxisanditallenclosure.Theprincipalaxiscontainaboreandtheheadofthisborebeoneawlbore,canusetoinstallknifeoftaketheawlhandle.Installaprincipalaxisboxtolivetop,with1gotogetherwithintotheprincipalaxisawlinsidebore.Theprincipalaxisboxistopandcanrevolvewiththeworkpiece.pastcalltolivetop.Itisatheawlmetalswhichtakepointpiece.Theworkpiececanusetoacceptaworkpiecewhentheworkpiecerevolveandalllatherbetopallfor60degreesCape.Installanenclosureontheprincipalaxis,oftenusagethreekindsofingeneraluseprincipalaxishead:1.ThreadprincipalaxisheadThethreadprincipalaxisismostincommonuseonthelatherhead.ArrivetheenclosureNingforinstallaprincipalaxisup,untilwiththeprincipalaxismethodorchiddishclosematcheachother.Threadprincipalaxismainweaknessoftheheadistocantcarryonanti-paretowardthecar,anti-becauseofsomeenclosure(forexamplecarddish)tohourwouldlooseopen.2.camlocktightprincipalaxisheadThecamlocktightprincipalaxisheadcontainaveryshortawlbody,itcangotogetherwithintoflowerdishorcarddishbackofinsideawlslot.Fromtheflowerdishorthecarddishbackstretchoutmanycamlocktightminoraxis,theseminoraxisescangotogetherwithintotheboreofprincipalaxisheadinside.Turningtomovethesecamscanbetighttheirlockatprovisionposition.3.thelongawlkeyspreadtomoveaprincipalaxisheadIthasaverylongawlbody.Theawlbodytakeadditionalkeywithaninsidethreadsetclaw.Flowerdishorcarddishhavetowithitsawldegreehomologycombinetakeoutsidethreadkeyslot.Thiskindofjusttolocktighttypetheprincipalaxisbethemostwidespreadinthemedium-sizedlather.Itallowaprincipalaxisatjusttooranti-torevolvealltheabilityslicetopare.Drivethemotiveofprincipalaxisissupplybyanelectricmotor,deliverthemotivetotheprincipalaxistohavefourkindsofincommonusemethodfromtheelectricmotor:1.TheevenleatherbeltspreadtomoveInthemajoritytheleatherbeltspreadmoveofthelather,itisdirecttodrivemotivethroughaleatherbeltdelivergiveattachatowerroundinprincipalaxis.Thedissimilarityformovingtheleatherbelttothetowerroundposition,convertibilityprincipalaxisspeed.Foracquirelowersoonwithgreatermotive,canusagecarryroundonusagesback.2.thetriangleleatherbeltspreadtomoveThecircumferenceofeachleatherbeltroundtopallopenaVtypeslot.TriangleleatherbeltwillbythesquaretheQianpersonisinsideslot.Thetriangleleatherbeltcantrunintothebottomofleatherbeltround.Thiskindofspreadtomoveawaytoalsohave1tospreadwithevenleatherbelttomovelikenessofcarryonthebackaroundequip.3.havenoclasstobecometosoonspreadtomoveThiskindofequipneednotparkingcanchangeactiveroundwithfrommoveaspeedof.Actuallyonlywhenthetoolmachinecirculatejustneedtobebecomesoon.HavenoclasstobecometosoonspreadtomoveofspreadandmoveleatherbeltroundfromtwoVtypeonthesideofthehalfroundconstitute.Theleatherbeltasideoftheroundcanopenandnamelytakeoffwithanotherasidetoopen.Movetoarrivesmallerdiameterintakeoffopenthehour.theleatherbelttoward,makefrommovearoundcreationlowerspeed.Whenleatherbeltroundtwosidesmatchat,forceleatherbelttooutwardlymovetoarriveb