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外文翻译--单螺杆加工机床的布局和结构.doc

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外文翻译--单螺杆加工机床的布局和结构.doc

SinglescrewMachineToolLayoutandStructureAbstractMachineisanationalsymbolofhighandlowlevelofmanufacturingindustry,thecoreisaCNCsystem.WearecurrentlynotsaythatthesystemisthequalityofdomesticmadeCNCmachinetoolsalittlebetter,theuseofhighprecisionballscrews,bearingsareimported,mainlytobuyinJapan,ourhomegrownballscrew,bearingsinprecision,thereareproblemsinlife.Thispaperdescribesfourareasfromtheexistingsinglescrewmachinelayoutandstructure,andputouttheadvantagesanddisadvantagesofthelist,becauseofthecompressorplantsinglescrewmachinetoolsandmachinetoolexternalSecurityinformation,theaboveintroductionthereisinevitablyonesidedandwrong,andarethereforesinglescrewcompressorfortheproductionofreferenceworks.KeyWordsMachineSpindleBearingToolMachineisanationalsymbolofhighandlowlevelofmanufacturingindustry,thecoreisaCNCsystem.WearecurrentlynotsaythatthesystemisthequalityofdomesticmadeCNCmachinetoolsalittlebetter,theuseofhighprecisionballscrews,bearingsareimported,mainlytobuyinJapan,ourhomegrownballscrew,bearingsinprecision,thereareproblemsinlife.Currentlythemajormachinetoolplant,purchased100ofNCsystem,themanufacturersgenerallybuyaJapaneseFanuc,Mitsubishisystems,accountingformorethan80,butalsoGermanysSiemenssystem,butrelativelysmall.WhyisGermanysSiemenssystemusedbysmallEarly,theGermansystemisnotabletofitourpowergrid.Ourpowergridstabilityisnotenough,Siemenselectronicservosystem,themoduleeasytoburnout.Japanisdifferent,andtheirsystemisnotabadburn.Recently,anumberofSiemenssystemimprovements,priceisstillslightlyhigher.GermanyisverygreatimportancetoChina,soChineseoftheirsystemonlyrecently,unlikeJapan,thereareChinesebasedversionofthelongago.Theyareintroducedinthelate90sJapanesetechnologydevelopment.SouthKoreashouldbealittlebetter.Ithasitsownmanufacturing,hascommercializedtheNCsystem,butimportsofmachinetoolsinChinainresponsetoourrequirements,butalsoreplacedtheJapanesesystem.Wetrustedtheirsystems.SouthKoreanCNCmachinetoolsaremainlytwoDaewooandHyundai.DaewoocurrentlyhasajointventureinChina.However,theirpoorqualitymachinetools,lifeisshort,thecurrentbadinfluenceinthemainland.Infact,theywerebetterthanwemadealittle.However,ourownpoor,wecantolerate,TaiwansmachineispurchasedwithU.S.dollars,withthebad,andthatthefirelarger.Taiwansmainplant,severaltoolshavebeenintendedtomovetheirfactoriestothemainland,mostoftheminShanghai.Theseplantscurrentlyinthedomesticcompetition,butalsothenameofthebannermade.Onthedomesticadvancednumericalcontrolmachinetools,itsmainprofitistakenawaybyforeigners.Recently,asChinaseconomicdevelopment,alsocausedsomeofthemajormachinetoolmanufacturersintheworldsattentionin2000,ChinasetupajointventureofNCmachinetoolplant,saidproductionlevelisveryhigh,knownasintelligent,networkbasedfactory,andtheworldsimultaneously.Alsothisyear,amajorJapaneseOkumaMachineToolPlantinBeijing,setupanannualoutputof1000setsCNCmachinetoolscanbeaholdingcompanyofawellknownGermancompaniesaresettingupaShanghaifactory.Atpresent,thecountrieshavedevelopedanumberofpoliciestoencouragepeopletousedomesticCNCmachinetool,eachmanufactureristryingtocatchup.the80areimported,domesticmachinetoolstomeetneeds.Withinthenextfiveyears,thistrendwillnotchange.However,intermsofthepresentdomesticneeds,ChinasCNCmachinetoolsnowareabletomeetthemediumandlowproductorders.First,introducethelayoutofmachinetoolsThefirstismachinetoolrotarytoolspindlecenterandthecenterdistanceforthefixedMachinetoolrotarytoolspindlecenterandthecenterdistanceforthefixed,cannotadjustthecenterdistance.Processingofseveralofthescrewdiameteronthecenterdistancerequiredseveraldifferentspecificationsofthemachine.Advantagessimplestructureofthemachine.Disadvantageeachmachinecanonlyprocessaspecificationofthescrew,whenthemarketonacertainspecificationrequirementswhenthescrewcompressor,resultinginamachine,othermachineidle.ThesecondthemachinetoolspindleboxforrotarySpindleboxthatthemachinecanturnonamachineattheabovementionedarticleontheuseoftheimprovements,withthefirststructureofamachinetoolisbasicallythesame.Advantagesthestructureofmachinetooleasytoadapttoavarietyofspecificationsoftheprocessingscrew.Onedisadvantageaftertherotatingspindleboxandthetoolspindleturningcenterlinedistancebetweenthecenterlineofaccuratemeasurementdifficult.ThethirdthemachinetoolspindleboxforhorizontalmobileBoxatthebottomofthespindleandthebasethereisarrangedbetweentherectangularslidingrail,spindleboxperpendiculartothedirectionofmovementofspindlecenterlineandperpendiculartothecenterlineofthetoolrotation.Throughthepowerofthespindleboxshafttothebaseofthetoolfeedmechanism.Screwdiameter,accordingtothesizeoftheprocessingintheprocessingofthepreviousroundbyhandtothebodyputintothescrewspindleboxmovedtotheappropriatelocation,andthenscrewthespindleboxonafixedbase.Horizontalspindleboxcanbeusedasamobilemachinecanprocessdiameterφ95φ385mmanykindbetweenthescrewspecifications.Φ95φ385mmprocessingbecauseofthediameterofthescrew,causingthefrontsurfaceandthetoolspindlerotationthedistancebetweenthecenterlineofthemarginistoolarge,theactualapplicationinthedesignspecificationsofthemachineintotwo,aφ95φ205mmmachinescrewdiameterAnotherφ180φ385mmmachinescrewdiameter.Advantagesavarietyoftoolstoadapttothespecificationsoftheprocessingscrew,eachscrewspecificationsneednotbeprovidedwiththeappropriatemachinetools.Disadvantagethestructureofmachinetoolsandmachinetoolassemblyofthetwokindsofmorecomplexmachinetools,machinetoolsthanthecostoftwokindsofmachinetoolsbeforethehigh.Second,introducethestructureofmachinetoolspindleThelevelofmachinetoolspindleboxonthemainaxisandthebaseoftheverticalaxisdeterminesthedegreeofprecisionwastheprecisionscrewmachining,atthesametimescrewcompressorataspeedofthousandsofhighspeedrotaryswitch,theaccuracyofthescrewwillbelesssothatthecompressorhaveafever,vibration,lowefficiency,suchaswearandtearsituationquickly.

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