切割机外文翻译

毕业设计外文资料翻译题目网格刻线机学院机械工程学院专业机械工程及自动化班级机升1002班学生张静学号20100404071指导教师苏东宁二〇一二年四月二日济南大学毕业设计外文资料翻译-1-济南大学毕业设计外文资料翻译-2-UnitedStatesPatentOffice,Ser.No.739,123GRIDRULINGMACHINEJohnTFerris,Houston,Tex.UnitedStatesPatentOfficeAbstractThisinventionrelatestogridrulingmachineand,moreparticularly,toapparatusforeffectinganaccuratetransverserulingofagridblankofextensivelength.KeywordsgridrulingmachineGRIDRULINGMACHINEJohnTFerris,Houston,Tex.,assignortoDresserIndhustres:Incorporated,Dallas,Tex,acorporationofDelawareFiledJune2,1958,Ser.No.739,12311C1aims.(Cl.88-24)Thisinventionrelatestogridrulingmachineandmoreparticularly,toapparatusforeffectinganaccuratetransverserulingofagridblankofextensivelength.Inthepastgridshavebeenruledbymachinesusingconventionalmechanicaldrivesandstopandstartcontrolsinconjunctionwithareciprocatingmechanicalscribingcarriage.However,itisapparentthatthenumerousincrementsofshortmovementofthecarriageinterruptedbyacompletestopduringtheoperatingstrokeofthescribingcarriagepermitsarepeatedbacklashorplaybetweenthemachineelementswithinthelimitsofmanufacturingtolerances.Sinceperfectaccuracyinthedesignandconstructionofconventionalmachineelementsisunattainable,evenmoresmallerrorsinscribingaremultipliedwithrepetitionsothatgridsscribedbysuchmachinesarenecessarilylimitedinlength.Morerecentlyinterferometershavebeenemployedtocontrolthelongitudinalincrementofmovementofthescribingcarriagesbutsinceinterferencefringeslosetheirbrillianceandcontrasttoanunusablelevelbeyondcertainminimumlimitsofmovement,gridsofmorethanafewcentimetersinlengthcannotbeproducedunderconventionalinterferometercontrol.Itis,therefore,anobjectofmyinventiontoprovideamachinecapableofproducingruledgridsofalengthunlimitedbythenecessityofminimizingmultiplicationofmachineerrors,orbythelimitsofpracticalinterferometeroperation.Itisafurtherobjectofmyinventiontoprovideameansforrulinggridsduring济南大学毕业设计外文资料翻译-3-continuousmotionoftherulingdevicealongthelengthofthegridblank.Itisafurtherobjectofmyinversiontoprovideaninterinterferometerhavinganoperatingrangelimitedonlybythelengthofthemachinewaysalongwhichitisguided.Itisafurtherobjectofmyinventiontoprovideanovelmethodofrulingagridblankwhichdoesnotrequiresstartandstopincrementsofmovementofthesupportingcarriage.Itisafurtherobjectofmyinventiontoprovideagridrulingmachinethatisautomaticand,atthesametime,reliableandaccurateinoperation.Incarryingoutmyinvention,Iprovideapairofcarriagesadaptedtomovealongwellmachinedways.Drivemeansandstopmeanswhichmaybeintegratedareprovidedforindependentmovementofeachcarrier.Elementsofaninterferometerarearrangedonthecarriages,sothatrelativelymovableelementsthereofareseparatelymovable.Controlmeansareprovidedtomovethecarriagesalongthewaysalternately,stepbystep,inincrementswithinthepracticalrangeoftheinterferometer,withonecarriagesupportingauniquemarkingdevicethatisoperableduringmovementofthatcarriage.Thus,thereisasettingstrokeofonecarriage,anactivestrokeofthemarkingcarriage,asettingstrokeandso.onuntilthefulllengthofthewayshasbeentraversedifdesired.Formarkingthegridblank,Iprovideacoatingoflightsensitiveemulsionontheblankaridemployasthemarkingdeviceasourceoflightcapableofexposingafinelineacrossthewidthofthegridblank.Thesourceoflightisfiredatintervalsduringcontinuousmovementofthemarkingcarriageinresponsetosignalsgeneratedbytheinterferometer.Otherobjectsandadvantagesofmyinventionwillbecomeapparentfromthedescriptionfollowingwhenreadinconnectionwiththedrawingwherein:FIG.1isanisometricviewofmyapparatus;FIG.2isaschematicplanviewoftherulingmachine.Referringnowtothedrawing,mygridrulingmachinecomprisestwocarriagesland2separatelydrivenalong.wellmachinedwaysbyanyconventionaldrivemeanssuch.aspinions3and4,engagingracks5and6alongthemachinedways.Eachgear3,4isdrivenbyanelectricmotor7and8,preferablyoftheservotypesothatthevelocity,startingandstoppingofthecarriagesland2alongtheways,canbemaintainedunderclosecontrol.Asiswellknown,thedesiredvelocitycontrolisachievedwithaservomotorbymodifyingthecurrentdeliveredtheretoinresponsetovariationsinspeedactuallydeliveredtherebyBut-inanyevent,thespecificdrivemeansemployedforthecarriagesisnotmaterialandthemotorsandgearsdescribedareshownbywayofillustrationonly.Otherspeedcontrolmechanismssuchasspeedreducerscanbeutilizedtosupplementthemeansshown.Moreover,othermechanismssuchasconstanttensionspringsorevengravitymaybe济南大学毕业设计外文资料翻译-4-substitutedasdrivemeans.Theimportantconsiderationintheapparatustobehereinafterdescribedisthatmeansbeprovidedtostart,stopandotherwisecontrolwithextremeaccuracythemovementsofthecarriagesland2.Theextentofmovementofthecarriagesland2iscloselycontrolledbyaninterferometer10mountedthereon.Theinterferometerincludesasourceofmonochromaticlight,suchasacadmiumvapordischargetube11coupledwithanarrowbandfilter12.Thenearmonochromaticlightissuingfromfilter12ispassedthroughacollimatinglens13whichdirectsacolumnoflightintoadividingprism14,comprisingtw030-60-90degreeprisms15and116cementedtogether.Significantly,atleastoneoftheprisms15,16isaluminizedattheirunionface17sothatequalamo