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外文翻译--宽槽圆柱凸轮数控加工技术的研究.doc

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外文翻译--宽槽圆柱凸轮数控加工技术的研究.doc

ideTroughColumnCamNumericalControlProcessingResearchSummarySomequestionsproduceswhichinviewofthetraditionalmillingmethodprocessingcolumncam,proposedonekindinviewofthetroughspaciouslyinthecuttingtooldiametercolumncampathnumericalcontrolmillingprocessingmethod.Throughtheanalysisresearch,hasestablishedonekindofcorrectcoordinatestransformationmodel,andprocessesaccordingtothisconformstotherequestwidetroughcolumncam.KeywordsNumericalcontrolprocessingCoordinatesTransformationwidthtroughcolumncamMainTextThecolumncampathisgenerallysurroundsaccordingtothecertainruleintheroundcylinderandsoonthewidetrough.Mustsatisfybelowtothecolumncampathnumericalcontrolmillingprocessingrequests1.Thecolumncampathworkingsurfacenamelytwosidesplaneofnormalsectionlinesmustbestrictparallel2.Thecolumncampathmustwaitforthewidthintheworksection.Thisisguaranteestherollerinthecolumncampaththesteadymotionessentialcondition.Whencolumncampathwidthnotbig,mayfindthecorrespondingdiametertheendmilltocarryontheprocessingalongthetroughcavitymiddleline,comparedwithiseasytoprocessconformstotheaboverequestcolumncampath.Accordingtotheexistenceinformationintroducedthat,atpresentthecolumncammillingprocessingallisrealizeswiththismeans.Becausethismethodhastoomanylimitations,bringsmanydifficultiesfortheactualmillingprocessing.Forexamplewhencannotfindwiththetroughwidthsizeequalstandardcuttingtool,mustcarryontothecuttingtoolchangesthesystem.Regardingthetroughwidthsizebigcolumncampath,isverydifficulttofindthediameterandthetroughwidthequalstandardcuttingtool.Evenifhasthecorrespondingcuttingtool,butalsomustconsidertheenginebedmainaxleoutputandthemainaxleandtheworkclothesjigrigiditylimit,speciallyenginebedmainaxlestructuretocuttingtoollimit.Forexamplethenumericalcontrolenginebedhostaxleneckis72440innercones,usesforpartsJT40thetoolsystem,thenmostgreatlyonlycanuseφ20mmendmillnomatterstraighthandlebitholder.Thisregardingthetroughwidthisthe38mmcolumncamisprocessingcamwhichthisarticlenarratessaidisunabletoprocess,mustseekthenewprocessingmethod.Underandanalyzestheresearchaccordingtotheexperience,introducedonekindissmallerthanthecampathwidthendmillwiththediametertocarryonthenumericalcontrolprocessingtothecolumncampaththemethod,callsitthewidthtroughcolumncamnumericalcontrolprocessing.First,ProcessingcraftThecolumncampathissurroundsintheroundcylinderandsoonthewidthtrough,whenitsprocessingoftenisbiggerthan360°.alongthecircumferencesurfacemillingscopeIssuitableforwithtohavethenumericalcontrolrotaryabutmenttheverticalnumericalcontrolmillingmachinetocarryontheprocessing.Accordingtothecolumncamactualstructure,selectsthebeltkeythespindlemakeswhenthecamprocessingtheradialdirectionandtheweektothelocalizationdatum,makestheaxiallocalizationdatumbythespindleledge,andthenosethreadcontractsthecolumncamwiththespindleinfrontofthroughthenut.Thecolumncamaxialandtheradialdirectionsizeisgenerallybig,inordertoovercomebecausethebracketprocessestimethecuttingforcecreatesinthespindledistortionandtheprocessingprocessproducesinspirestrembles,usesasupportingonthetailstock,withstandsthespindlecenterborewiththenumericalcontrolturnplaterotationspoolthreadcoaxialapextomaketheauxiliarysupporting.Thecolumncampathbaseoneachsectionusuallyisandsoondeep,selectstheflatbasecolumnendmillprocessinggenerally.Beforethecolumncammillingprocessingusuallyisasolidcircularcylinder,mustpassthroughworkingprocedureandsoonslot,roughmachining,halfprecisionwork,precisionworkBecausethetroughcavitywidthisbig,Therefore,exceptthetroughworkingprocedureandaroughmachiningworkingprocedurepartofknivespositionspathmayalongbesidethetroughcavitymiddlelineproduction,otherknifepositionpathsthenmustbealongthetroughcavitycenteralignmentleft,arerightnearbytwoaccordingtotheCorresponding.Figure1columncampathtwodimensionaldevelopedviewSecond,SolutionmodelInthecolumncampathnumericalcontrolprocessing,howextractsineachworkingproceduretoprocesstwosidessurfacestheknifepositionpathiskey.Regardingtheperipheryoncampath,usuallyislaunchesfirsttheroundcylinder,extractsthisworkingprocedureintheXOSplanetoprocesstwosidessurfacestheknifepositionpathtolaunchcurveXSThentransformsthroughthecoordinates,willlaunchthecurveXStransformationwillbeonfourcoordinatesenginebedsknifepositionpath.UnderdiscussesnomatterwhatinaprocessingworkingprocedurelaunchescurveXSthesolutionmethod,aswellasproductionfinalknifepositionpathcoordinatestransformationmethod.1.LaunchescurveXSthesolutionLikechart2shows,Loisthecolumncampathmiddleline,regardingtheiworkingprocedure,LliandLrirespectivelythetroughcavitywhichisgoingtoprocessbethisworkingprocedureleft,therighttwosidessurfacelaunchesthecurve,thiswidthisBi,processesthecuttingtoolradiusisrobviously2r≤Bi,processesthiscavitytobeleft,therightsideknifepositionpathlaunchesthecurveisCLliandCLri,supposesPoisinatroughcavitymiddlelinespot,PoisthetroughcavitymiddlelineinthePoplacelawarrow,Thenisleft,therightknifepositionpathlaunchesinthecurvecorrespondingpointspliandthepricomputationalmethodis1Figure2columncampathtwodimensionaldevelopedviewPoalongthetroughcavitymiddlelinemigration,namelymayextractthisworkingprocedureknifepositionpathtolaunchcurveXSintheXOSplaneAccordingtotheprocessingworkingprocedure,changesineachworkingprocedureinturntroughwidthBi,thenextractstheprocessingtoneedthetroughcavityallknivespositionpathtolaunchthecurve.2.AlongcampathmiddlelineprocessingcoordinatestransformationmethodAbovethecomputationislaunchesintheplaneintheroundcylindertocarryon,inordertoextracttheprocessingcolumncampathcavitytheknifepositionpath,mustlaunchtheplaneinthecurvetotransformtotheroundcylinderin.ThesuppositionrotatingaxisforcirclesXaxisAaxis,piisinaknifepositionpathknifepositionspot,itlaunchesinthecurveinthetwodimensionalsurfacethecoordinatesforx,s,onfourcoordinatesenginebedscoordinatesisx,y,z,a.。Becausethecolumncampathcavityusuallyisandsoondeep,therefore,thezcoordinatesinestablishafterdepthswhichneedstoprocess,intheprocessingisinvariableBelow2Intheformula,Risthecolumncamshaftradius.Theprevioustypeisthepresentuniversalusecoordinatestransformationformula,regardingusesthestandardcuttingtooltoprocessthecolumncamalongthecampathmiddlelinemillingiscorrect.3.HasthequestionanalysistotheprevioustypeinthewidthtroughcolumncamprocessingWhenappliestheprevioustypepromotioninthewidthtroughcolumncamnumericalcontrolprocessing,hashadsomequestionsactuallythroughthe

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