《数控车铣加工 高级（英文）》课件-项目2：泵体车削编程与加工培训

CNCTurningandMilling(Advanced)TianjinLightIndustryVocationalandTechnicalCollegeCurriculumResourceConstructionProjectTableofContents1234Project3CrankTurningProgrammingandMachiningTrainingProject4Supportseatmillingprogrammingandprocessingtraining65Project6CrankconnectingrodmillingprogrammingandmachiningtrainingProject5BasemillingprogrammingandmachiningtrainingProject2PumpbodyturningprogrammingandmachiningtrainingProject1CheckvalveturningprogrammingandmachiningtrainingTask3ProgrammingexercisesProject2PumpbodyturningprogrammingandmachiningtrainingTask2ProcesspreparationTask1:LearnthekeyknowledgepointsTask1:Learnthekeyknowledgepoints2Threading1Turninggroovemachining01TurninggroovemachiningTask1:Learnthekeyknowledgepoints2.1TurninggroovemachiningThisfunctionisusedforgroovingontheoutercontoursurface,innercontoursurfaceandendfaceoftheworkpiece.Whengrooving,itisnecessarytodeterminethecontourtobeprocessed,andthecontourtobeprocessedisthesurfacecontouroftheworkpieceafterprocessing,andthecontourtobeprocessedcannotbeclosedorself-intersected.Steps:1.Selectthe"TurningGroove"menuiteminthe"CNCLathe"submenuareainthemenuarea,andthesystemwillpopuptheprocessingparametertable,asshowninthefollowingfigure.Intheparametertable,itisfirstnecessarytodeterminewhethertheoutercontoursurface,theinnercontoursurfaceortheendfacetobeprocessedistobeprocessed,andthendeterminetheotherprocessingparametersaccordingtotheprocessingrequirements.Turninggroovemachiningdata2.Afterdeterminingtheparameters,thecontourtobeprocessedcanbepicked,andthecontourpickingtoolprovidedbythesystemcanbeusedatthistime.3.Afterselectingtheprofile,determinetheadvanceandretreatpoints.Specifyapointwherethetoolislocatedbeforeandaftermachining.Presstherightmousebuttontoignoretheinputatthatpoint.Oncetheabovestepshavebeencompleted,thegroovingtrajectorycanbegenerated.Selectthe"Post-processing"functioniteminthe"CNClathe"menuarea,pickupthetoolpathjustgenerated,andthengeneratethemachininginstruction.Task1:Learnthekeyknowledgepoints2.1TurninggroovemachiningTheprocessingparametersmainlylimitthevariousprocessconditionsandprocessingmethodsinthegroovingprocess.Themeaningofeachprocessingparameterisdescribedasfollows:1.Machiningprofiletype:Outercontour:Theoutercontourisgrooved,ortheoutercontourismachinedwithagroovingknife.Innercontour:Theinnercontourisgrooved,ortheinnercontourismachinedwithagroovingknife.Endface:Theendfaceisgrooved,ortheendfaceismachinedwithagroovingknife.2.Processingtechnologytype:Roughing:Onlyroughingisdonetothegroove.Finishing:Onlyfinishingisdonetothegroove.Roughing+Finishing:Roughingthegrooveisfollowedbyfinishing.Task1:Learnthekeyknowledgepoints2.1Turninggroovemachining2.1.1ProcessingparametersTask1:Learnthekeyknowledgepoints2.1Turninggroovemachining2.1.1Processingparameters3.Cornertransitionmode:Fillet:Thetransitionofthetoolfromonesideoftheprofiletotheotherinacirculararcwhenthecuttingprocessencountersacorner.Sharpcorners:Sharpcornersareusedtotransitionthetoolfromonesideoftheprofiletotheotherwhenthecuttingprocessencountersacorner.4.Roughingparameters:Delaytime:Theamountoftimethetoolstaysatthebottomofthegroovewhenroughingthegroove.Depthofcuttranslation:theamountofcuttingamountofeachlongitudinalgroovingofthetool(X-directionofthemachinetool)whenroughturning.Horizontaltranslation:Whenroughturning,thetoolcutstothespecifieddepthofcuttranslationandperformsthenexttimeTheamountofhorizontaltranslationbeforecutting(machineZ-direction).Retractdistance:Thedistancefromtheretracttotheoutsideofthegroovebeforethenextrowofcutsismadeintheroughgroove.Machiningallowance:thereservedamountoftheunprocessedpartofthemachinedsurfaceduringroughmachining.5.Finishingparameters:Cuttingrowspacing:Thedistancebetweenfinishingrows.NumberofCuttingLines:Thenumberofmachininglinesforthefinishingtoolpositiontrajectory,excludingthenumberofrepetitionsofthelastrow.Retractdistance:Thedistancebeforecuttingthenextrowaftercuttingonerowinfinishing.Machiningallowance:thereservedamountoftheunmachinedpartofthemachinedsurfaceduringfinishing.Numberoflastrowmachining:Inordertoimprovethesurfacequalityofmachining,thelastrowisoftenturnedmultipletimeswiththesamefeed,andthenumberofmultiplecutsisdefinedhere.Task1:Learnthekeyknowledgepoints2.1Turninggroovemachining2.1.1ProcessingparametersForthedescriptionofthecuttingquantitytable,refertothedescriptionin"TurningRoughing".Task1:Learnthekeyknowledgepoints2.1Turninggroovemachining2.1.2CuttingamountTheamountofcuttingusedforturninggroovesClickthe"ToolParameters"tabtoenterthegroovingtoolparametersettingpage.Thispageisusedtosettheparametersofthegroovingtoolusedinmachining.Fordetails,pleaserefertothedescriptionin"ToolMagazineandTurningTools".Task1:Learnthekeyknowledgepoints2.1Turninggroovemachining2.1.3GroovingtoolsTurninggroovingtoolsettings1.Asshowninthefigure,thegroovepartofthethreadretractgrooveisthecontourtobemachined.Task1:Learnthekeyknowledgepoints2.1Turninggroovemachining2.1.4ExampleofturninggrooveWorkpiecedrawings2.Fillintheparametertable:Afterfillingintheparametersinthegroovingparametertabledialogbox,pickupthe"confirm"buttoninthedialogbox.3.Pickthecontourandprompttheusertoselectthecontourline.4.Topickthecontourline,youcanusethecurvepicktoolmenu,andusethespacebartopopupthetoolmenu,asshowninthefigurebelow.Thetoolmenuoffersthreepicks:SinglePick,ChainPick,andLimitChainPick.Task1:Learnthekeyknowledgepoints2.1Turninggroovemachining2.1.4ExampleofturninggroovePick-upmethodWhenthefirstoutlineispicked,itbecomesareddashedline.You'llbeprompted:Selectadirection.Theuserisrequiredtoselectadirectionthatonlyindicatesthedirectioninwhichthecontourispicked,regardlessofthemachiningdirectionofthetool.AsshowninFig.Task1:Learnthekeyknowledgepoints2.1Turninggroovemachining2.1.4ExampleofturninggrooveSelecttheoutlinedirectionAfterselectingthedirection,thesystemwillautomaticallypickupthecontoursconnectedfromendtoendifthechainpickingmethodisused,andifasinglepickingisused,thesystempromptstocontinuepickingthecontours.Thesystemcontinuestopromptyoutoselectthelimitline,selecttheleftpartofthegroovethatendsthelinesegment,andthegroovepartbecomesabluedottedline.AsshowninFig.Task1:Learnthekeyknowledgepoints2.1Turninggroovemachining2.1.4ExampleofturninggrooveChainpickupmethod5.DeterminetheadvanceandretreatpointsSpecifyapointwherethetoolislocatedbeforeandaftermachining.Presstherightmousebuttontoignoretheinputatthatpoint.6.GeneratetoolpathsOncetheadvanceandretractpointsaredetermined,thesystemgeneratesagreentoolpath,asshownintheimage.Task1:Learnthekeyknowledgepoints2.1Turninggroovemachining2.1.4ExampleofturninggrooveGeneratetoolpathsNote:1.Thecontourtobeprocessedcannotbeclosedorself-intersected.2.Thegeneratedtrajectoryiscloselyrelatedtotheparameterssuchastheangleradiusandthewidthofthecuttingedgeofthegroovingcutter.3.Onlytheupperpartoftheretractgroovecanbedrawnaccordingtoactualneeds.Task1:Learnthekeyknowledgepoints2.1Turninggroovemachining2.1.4ExampleofturninggrooveTask1:Learnthekeyknowledgepoints2Threading1Turninggroovemachining02ThreadingThisfunctionisanon-fixedcyclemethodforthreadprocessing,whichcanmoreflexiblycontrolvariousprocessconditionsandprocessingmethodsinthreadmachining.Task1:LearnthekeyknowledgepointsSteps:1.Selectthe"Threading"functioniteminthe"CNCLathe"submenuarea,andtheprocessingparametertablewillpopup,asshowninthefigure.Theusercandeterminetheindividualmachiningparametersintheparametertabledialogbox.2.2ThreadingThreadingparameters2.Pickupthestartingpoint,endpoint,advanceandretreatpointofthethread.3.Afterfillingintheparameters,selecttheconfirmationbuttontogeneratethethreadturningtoolpath.4.Selectthe"Post-processing"functioniteminthe"CNClathe"menuarea,pickupthetoolpathjustgenerated,andthengeneratethethreadinginstruction.Task1:Learnthekeyknowledgepoints2.2Threading2.2.1ThreadparametersClickonthe"ThreadParameters"tabinthedialogboxtoentertheprocessingparametertable,whichmainlycontainsparametersrelatedtothenatureofthethread,suchasthreaddepth,pitch,numberofheads,etc.Thethreadstartandendcoordinatesarederivedfromthepicksofthepreviousstepandcanalsobemodifiedbytheuser.1.Startingpointcoordinates:thecoordinatesofthestartingpointofthethread,inmillimeters.2.Endpointcoordinates:thecoordinatesoftheendpointofthethread,inmillimeters.3.Coordinatesoftheadvanceandretreatpoints:thecoordinatesoftheentryandretractpointsofthreadturning,inmillimeters.4.Threadtoothheight:Theheightofthethreadtooth.5.Numberofthreadheads:thenumberofteethbetweenthestartpointandtheendpointofthethread.Task1:Learnthekeyknowledgepoints2.2Threading6.Threadpitch:1)Constantpitch:Thedistancebetweenthecorrespondingpointsontwoadjacentthreadprofilesisaconstantvalue.2)Pitch:constantpitchvalue;3)Variablepitch:thedistancebetweenthecorrespondingpointsontwoadjacentthreadprofilesisthevalueofthevariation;4)Initialpitch:thepitchofthethreadatthestartingend;5)Endpitch:Thepitchofthethreadattheendofthetermination.

2.2.2ProcessingparametersTask1:Learnthekeyknowledgepoints2.2ThreadingThe"MachiningParameters"parametertableisusedtosettheprocessconditionsandmachiningmethodsinthreading.ThreadingparametersThemeaningofeachthreadingparameterisdescribedasfollows:1.Processingtechnology:Roughmachining:referstothedirectprocessingofthreadsbyroughcutting;Roughing+finishingmethod:referstotheroughcuttingaccordingtothespecifiedroughingdepth,andthenusingthefinecuttingmethod(suchasusingsmallerrowspacing)tocutofftheremainingallowance(finishingdepth).2.Thenumberoflasttoolpasses:Inordertoimprovethemachiningquality,thelastcuttinglinesometimesneedstorepeatthepassmanytimes,andthenumberofrepeatedpassesneedstobespecifiedatthistime.3.Totalthreaddepth:thetotaldepthofcutforthreadroughingandfinishing.4.Roughingdepth:thedepthofcutofthethreadroughing.5.Finishingdepth:thedepthofcutforthreadfinishing.2.2.2ProcessingparametersTask1:Learnthekeyknowledgepoints2.2Threading6.Cuttingamountperrow:1)Constantrowspacing:processingalongaconstantrowspacingduringprocessing;2)Constantcuttingarea:Inordertoensurethatthecuttingareaofeachcutisconstant,thecuttingdepthofeachcutwillbegraduallyreduceduntilitisequaltotheminimumrowspacing.Theuserneedstospecifythefirstandminimumrowspacing.Thedepthoftheknifeisspecifiedasfollows:thedepthofthenthknifeis√ntimesthedepthofthefirstknife.3)Variablepitch:thedistancebetweenthecorrespondingpointsontwoadjacentthreadprofilesisthevalueofthevariation;4)Initialpitch:thepitchofthethreadatthestartingend;5)Endpitch:Thepitchofthethreadattheendofthetermination.2.2.2ProcessingparametersTask1:Learnthekeyknowledgepoints2.2Threading7.Plungemodeofeachrow:referstotheplungemodewhenthecuttercutsatthebeginningofthethread.Thecutterexitsattheendofthethreadinthesamewayastheplunge.1)Alongthealveolarcenterline:alongthealveolarcenterlinewhencutting;2)alongtherightsideofthealveo:alongtherightsideofthealveolarwhenincised;3)Leftandrightalternation:Alternateleftandrightalongthesocketwhencutting.Clickthe"AdvanceandRetreatMode"tabtoentertheparametertableoftheadvanceandretreatmode.Thisparametertableisusedtosettheadvanceandretractmodeinmachining.2.2.3AdvanceandretractmethodTask1:Learnthekeyknowledgepoints2.2ThreadingThreadingmachiningadvanceandretractmethod1.Feedmethod:Perpendicular:Referstothedirectfeedofthetooltothestartpointofeachcuttingline.Vector:referstotheadditionofasectionofthefeedsectionatacertainangletothepositivedirectionoftheXaxisofthesystem(Zaxisofthemachinetool)beforeeachcuttingline,andthetoolfeedstothestartingpointofthefeedsection,andthenfeedsalongthefeedsectiontothecuttingline.Length:Definesthelengthofthevector(feedsegment);Angle:Definestheanglebetweenthevector(feedsegment)andthepositivedirectionofthesystem'sX-axis.2.2.3AdvanceandretractmethodTask1:Learnthekeyknowledgepoints2.2Threading2.2.3AdvanceandretractmethodTask1:Learnthekeyknowledgepoints2.2Threading2.Retractmethod:Vertical:referstothedirectretractionofthetooltothestartingpointofeachcuttingline;Vector:referstotheadditionofasectionofretractsectionwithacertainangleinthepositivedirectionoftheX-axis(Z-axisofthemachinetool)aftereachcuttingline,andthetoolfirstretractsalongtheretractsection,andthenstartstoretractverticallyfromtheendoftheretractsection.Length:Definesthelengthofthevector(retractsegment);Angle:Definetheanglebetweenthevector(retractsection)andthepositivedirectionoftheX-axisofthesystem;3.Fastretractdistance:thedistance(relativevalue)thatisretractedatagivenretractspeed,atwhichthemaximumallowablefeedspeedofthemachinetoolG0isretracte