ideTroughColumnCamNumericalControlProcessingResearchSummary:Somequestionsproduceswhichinviewofthetraditionalmillingmethodprocessingcolumncam,proposedonekindinviewofthetroughspaciouslyinthecuttingtooldiametercolumncampathnumericalcontrolmillingprocessingmethod.Throughtheanalysisresearch,hasestablishedonekindofcorrectcoordinatestransformationmodel,andprocessesaccordingtothisconformstotherequestwidetroughcolumncam.Keywords:NumericalcontrolprocessingCoordinatesTransformationwidthtroughcolumncamMainTextThecolumncampathisgenerallysurroundsaccordingtothecertainruleintheroundcylinderandsoonthewidetrough.Mustsatisfybelowtothecolumncampathnumericalcontrolmillingprocessingrequests:1.Thecolumncampathworkingsurfacenamelytwosidesplaneofnormalsectionlinesmustbestrictparallel；2.Thecolumncampathmustwaitforthewidthintheworksection.Thisisguaranteestherollerinthecolumncampaththesteadymotionessentialcondition.Whencolumncampathwidthnotbig,mayfindthecorrespondingdiametertheendmilltocarryontheprocessingalongthetroughcavitymiddleline,comparedwithiseasytoprocessconformstotheaboverequestcolumncampath.Accordingtotheexistenceinformationintroducedthat,atpresentthecolumncammillingprocessingallisrealizeswiththismeans.Becausethismethodhastoomanylimitations,bringsmanydifficultiesfortheactualmillingprocessing.Forexamplewhencannotfindwiththetroughwidthsizeequalstandardcuttingtool,mustcarryontothecuttingtoolchangesthesystem.Regardingthetroughwidthsizebigcolumncampath,isverydifficulttofindthediameterandthetroughwidthequalstandardcuttingtool.Evenifhasthecorrespondingcuttingtool,butalsomustconsidertheenginebedmainaxleoutputandthemainaxleandtheworkclothesjigrigiditylimit,speciallyenginebedmainaxlestructuretocuttingtoollimit.Forexamplethenumericalcontrolenginebedhostaxleneckis7:2440innercones,usesforpartsJT40thetoolsystem,thenmostgreatlyonlycanuse20mmendmill(nomatterstraighthandlebitholder).Thisregardingthetroughwidthisthe38mmcolumncam(isprocessingcamwhichthisarticlenarrates)saidisunabletoprocess,mustseekthenewprocessingmethod.Underandanalyzestheresearchaccordingtotheexperience,introducedonekindissmallerthanthecampathwidthendmillwiththediametertocarryonthenumericalcontrolprocessingtothecolumncampaththemethod,callsitthewidthtroughcolumncamnumericalcontrolprocessing.First,ProcessingcraftThecolumncampathissurroundsintheroundcylinderandsoonthewidthtrough,whenitsprocessingoftenisbiggerthan360.alongthecircumferencesurfacemillingscopeIssuitableforwithtohavethenumericalcontrolrotaryabutmenttheverticalnumericalcontrolmillingmachinetocarryontheprocessing.Accordingtothecolumncamactualstructure,selectsthebeltkeythespindlemakeswhenthecamprocessingtheradialdirectionandtheweektothelocalizationdatum,makestheaxiallocalizationdatumbythespindleledge,andthenosethreadcontractsthecolumncamwiththespindleinfrontofthroughthenut.Thecolumncamaxialandtheradialdirectionsizeisgenerallybig,inordertoovercomebecausethebracketprocessestimethecuttingforcecreatesinthespindledistortionandtheprocessingprocessproducesinspirestrembles,usesasupportingonthetailstock,withstandsthespindlecenterborewiththenumericalcontrolturnplaterotationspoolthreadcoaxialapextomaketheauxiliarysupporting.Thecolumncampathbaseoneachsectionusuallyisandsoondeep,selectstheflatbasecolumnendmillprocessinggenerally.Beforethecolumncammillingprocessingusuallyisasolidcircularcylinder,mustpassthroughworkingprocedureandsoonslot,roughmachining,halfprecisionwork,precisionwork；Becausethetroughcavitywidthisbig,Therefore,exceptthetroughworkingprocedureandaroughmachiningworkingprocedurepartofknivespositionspathmayalongbesidethetroughcavitymiddlelineproduction,otherknifepositionpathsthenmustbealongthetroughcavitycenteralignmentleft,arerightnearbytwoaccordingtotheCorresponding.Figure1columncampathtwo-dimensionaldevelopedviewSecond,SolutionmodelInthecolumncampathnumericalcontrolprocessing,howextractsineachworkingproceduretoprocesstwosidessurfacestheknifepositionpathiskey.Regardingtheperipheryoncampath,usuallyislaunchesfirsttheroundcylinder,extractsthisworkingprocedureintheXOSplanetoprocesstwosidessurfacestheknifepositionpathtolaunchcurveXS；Thentransformsthroughthecoordinates,willlaunchthecurveXStransformationwillbeonfourcoordinatesenginebedsknifepositionpath.UnderdiscussesnomatterwhatinaprocessingworkingprocedurelaunchescurveXSthesolutionmethod,aswellasproductionfinalknifepositionpathcoordinatestransformationmethod.1.LaunchescurveXSthesolutionLikechart2shows,Loisthecolumncampathmiddleline,regardingtheiworkingprocedure,LliandLrirespectivelythetroughcavitywhichisgoingtoprocessbethisworkingprocedureleft,therighttwosidessurfacelaunchesthecurve,thiswidthisBi,processesthecuttingtoolradiusisr(obviously2rBi),processesthiscavitytobeleft,therightsideknifepositionpathlaunchesthecurveisCLliandCLri,supposesPoisinatroughcavitymiddlelinespot,PoisthetroughcavitymiddlelineinthePoplacelawarrow,Thenisleft,therightknifepositionpathlaunchesinthecurvecorrespondingpointspliandthepricomputationalmethodis:(1)Figure2columncampathtwo-dimensionaldevelopedviewPoalongthetroughcavitymiddlelinemigration,namelymayextractthisworkingprocedureknifepositionpathtolaunchcurveXSintheXOSplane；Accordingtotheprocessingworkingprocedure,changesineachworkingprocedureinturntroughwidthBi,thenextractstheprocessingtoneedthetroughcavityallknivespositionpathtolaunchthecurve.2.AlongcampathmiddlelineprocessingcoordinatestransformationmethodAbovethecomputationislaunchesintheplaneintheroundcylindertocarryon,inordertoextracttheprocessingcolumncampathcavitytheknifepositionpath,mustlaunchtheplaneinthecurvetotransformtotheroundcylinderin.ThesuppositionrotatingaxisforcirclesXaxisAaxis,piisinaknifepositionpathknifepositionspot,itlaunchesinthecurveinthetwo-dimensionalsurfacethec