CNCTurningandMilling(Advanced)TianjinLightIndustryVocationalandTechnicalCollegeCurriculumResourceConstructionProjectTableofContents1234Project4Supportseatmillingprogrammingandprocessingtraining65Project6CrankconnectingrodmillingprogrammingandmachiningtrainingProject5BasemillingprogrammingandmachiningtrainingProject1CheckvalveturningprogrammingandmachiningtrainingProject3CrankTurningProgrammingandMachiningTrainingProject2PumpbodyturningprogrammingandmachiningtrainingTask3ProgrammingexercisesProject3CrankTurningProgrammingandMachiningTrainingTask2:LearnkeyknowledgepointsTask2Processpreparation2Processdesign1PartdiagramanalysisTask2Processpreparation01PartdiagramanalysisTask2Processpreparation3.4PartdiagramanalysisAccordingtotherequirementsoftheuseoftheparts,45steelisselectedastheblankmaterialofthepart,andtheblankblankingsizeissetatΦ35×40.Duringprocessing,theoutercircleoftheΦ35blankisusedasaroughreference,roughandfinetherightendface,Φ14andΦ15cylindricalsurfacestotherequiredsize,grooving,andthenturningaround,andtheoutercircleofΦ15isclampedwithfourclaws(payattentiontoprotectionduringclampingtopreventsurfacepinching),andtheleftendoftheprocessedpartsΦ8eccentricshafttotherequiredsize,grooving.Note:WhenturningtherightΦ32outercircle,theturninglengthshouldbesufficient.Inaddition,attentionshouldbepaidtothelengthofthebarprotrusionwhenclampingtheblank,soastoavoidcollisionbetweenthetoolandthechuck.02ProcessdesignAccordingtotheanalysisofthepartdiagram,theprocessisdeterminedasshowninTable3.1.Table3.1Processcard3.5ProcessdesignTask2ProcesspreparationMachiningprocesscardProductmodelXSBComponentserialnumberXSB-03Page1

ProductnameSuctionpumpThenameofthecomponentcrankTotal1pagesMaterialgradeC45Blankspecifications

Blankweightkgquantity1TheoperationnumberThenameoftheoperationProcesscontentworkshopsectionProcessequipmentman-hour

Quasi-knotSinglepiece5PreparationPrepareaccordingtoΦ35×40size.OutsourcingSawingmachine

10TurningTheoutercircleofΦ35blankisusedastheroughreference,andtheoutercircleandendfaceofΦ15andΦ32arefinished.cartLatheouterdiametermicrometer1002015TurningCutcirclipgroove

Latheverniercaliper

103.5ProcessdesignTask2Processpreparation20TurningTheΦ32outercircleisusedasthefinereferenceforreversecardinstallation,andtheeccentricityisadjusted

lathe

2025TurningFinishingΦ8outercircleandendface

Latheouterdiametermicrometer

2030TurningCutcirclipgroove

Latheverniercaliper

1035cleanCleantheworkpiece,sharpanglesareblunt.clamp

540InspectionInspectthedimensionsoftheworkpieceexamine

53.5ProcessdesignThistrainingtaskisaimedattheturningofthe10th-30thprocess,theprocessdesigniscarriedout,andtheprocesscardisformulated,asshowninthetable.Task2ProcesspreparationTurningoperationcardMachiningoperationcardProductmodelXSBComponentserialnumberXSB-02Page1

ProductnameSuctionpumpThenameofthecomponentPumpbodyTotal1pages

Theoperationnumber10-40ThenameoftheoperationTurningmaterial45equipmentCNClathesDevicemodelCK6150ejigThree-jawchuckMeasuringVerniercalipers,outerdiametermicrometers

InnerdiametermicrometerthreadstopgaugeQuasi-completionhours125minSingle-pieceman-hours105min3.5ProcessdesignThistrainingtaskisaimedattheturningofthe10th-30thprocess,theprocessdesigniscarriedout,andtheprocesscardisformulated,asshowninthetable.Task2ProcesspreparationTurningoperationcardStepsThecontentofthestepcuttingtoolSr/minFmm/rapmmStepman-hours

mobileauxiliary1Workpiecemounting

52RoughmachiningofΦ62andΦM48outercirclesurface,chamferandendface,finishingallowance0.2Outerroundroughturningtool12000.21.515

3FinishingM48threadlargediameter,finishingΦ62outercircleandendface.Cylindricalfinishingtools15000.10.210

4Groovingprocessing,cuttingthreadretractgroove,cuttingΦ62outercirclegroove.Groovingknives6000.1

15

5CoarsethreadingThreadturningtools60020.45

6FinethreadingThreadturningtools60020.153.5ProcessdesignThistrainingtaskisaimedattheturningofthe10th-30thprocess,theprocessdesigniscarriedout,andtheprocesscardisformulated,asshowninthetable.Task2ProcesspreparationTurningoperationcard7RoughcarinnerholeInternalroughturningtool12000.21.510

8FinishcarinnerholeInternallycontrolledprecisionturningtools15000.10.25

9Reverseclampingandalignment

1010RoughingofM30threads,largediameters,endfacesandchamfersOuterroundroughturningtool12000.21.515

11FinishingM30threadswithlargediameters,finishingendfacesandchamfers.Cylindricalfinishingtools15000.10.210

12CutthreadretractgrooveGroovingknives6000.1

5

13Coarsethreading,finethreadingThreadingknives6001.50.410

14Disassembleandcleantheworkpiece

5Task1:Learnthekeyknowledgepoints2Careccentricitymethod1Introductiontofour-jawchucks01Introductiontofour-jawchucksTask1:Learnthekeyknowledgepoints3.1Introductiontofour-jawchucksThefullnameofthefour-jawsingle-actionchuckisamanualfour-jawsingle-actionchuckformachinetools,whichiscomposedofadiscbody,fourscrewrodsandasetofjaws.Whenworking,fourleadingscrewsareusedtodrivethefourjawsrespectively,sothecommonfour-jawsingle-actionchuckdoesnothavetheeffectofautomaticcentering.3.1.1IntroductionWithpeople'sincreasingrequirementsforworkefficiency,hydraulicchuckshavegraduallyreplacedmanualchucksandhavebeenwidelyused.Inordertomeettheprocessingrequirementsofdifferentworkpieces,suchassomeworkpieceswithirregularsurfacessuchasrectangularsurfacesandcylindricalblanksurfaces,aswellassomeworkpieceswitheccentricitybetweentheclampingsurfaceandthemachiningsurface,four-jawhydraulicchucksareusuallyrequired.Task1:Learnthekeyknowledgepoints3.1Introductiontofour-jawchucks3.1.1IntroductionThefullnameofthefour-jawself-centeringchuckisamanualfour-jawself-centeringchuckformachinetools,whichiscomposedofadiscbody,foursmallbevelteeth,andasetofjawsCompose.Foursmallbevelteethandcoilwiremesh,thebackofthecoilwirehasaplanethreadstructure,andthejawsareinstalledontheplanethreadinequalparts.Whenthesmallbevelteetharepulledwithawrench,thecoilrotates,andtheflatthreadonthebackofthejawcausesthejawtoapproachorexittothecenteratthesametime.Becausethepitchoftheplanerectangularthreadonthecoilwireisequal,themovementdistanceofthefourjawsisequal,andithastheeffectofautomaticcentering.Task1:Learnthekeyknowledgepoints3.1Introductiontofour-jawchucks3.1.1IntroductionTask1:LearnthekeyknowledgepointsTherearetwotypesofjawsforfour-jawself-centeringchucks,integraljawsandseparatejaws.Theintegralclawisacardclawintegratingthebaseclawandthetopclaw,andanintegralclawisdividedintofourpositiveclawsandfourreverseclaws.Thereareonlyfourjawsforasetofseparatingjaws,andeachjawiscomposedofabaseclawandatopclaw,andthefunctionofthefrontclawandthereverseclawisachievedthroughthetransformationofthetopclaw.Inaddition,softjawscanalsobeprovidedaccordingtouserrequirements,andhighcenteringaccuracycanbeobtainedafterrandomvehicleallocation(grinding)tomeettheclampingrequirements.Thejawsofthefour-jawsingle-actionchuckhaveonlyonetypeofintegraljaw.Onejawcanbemovedindividuallyandissuitableforclampingeccentricandirregularlyshapedparts.3.1Introductiontofour-jawchucks3.1.1Introduction1.Four-jawself-centeringchuckFunction:Thesynchronousmovementofthefourjawsissuitableforclampingsquareandsquareparts,andisalsosuitableforshaftanddiscparts.Applicablemachinetoolsandaccessories:ordinarylathes,economicalCNClathes,grindingmachines,millingmachines,drillingmachinesandmachinetoolaccessories-indexingheadrotarytable,etc.Task1:Learnthekeyknowledgepoints3.1Introductiontofour-jawchucks3.1.2Scopeofapplication2.Four-jawsingle-actionchuckFunction:Eachjawcanbemovedindividually,whichissuitableforclampingeccentricpartsandirregularlyshapedparts.Applicablemachinetoolsandaccessories:ordinarylathes,economicalCNClathes,grindingmachines,millingmachines,drillingmachinesandmachinetoolaccessories-indexingheadrotarytable,etc.Task1:LearnthekeyknowledgepointsLatheattachmentforclampingroundorsquareorrectangularworkpiecesformachining.Thefourjawsofthischuckcannotbelinked,andneedtobepulledseparately,soitcanalsobeusedtoclampunilateral,non-centeredworkpieces.3.1Introductiontofour-jawchucks3.1.3UsesTask1:Learnthekeyknowledgepoints2Careccentricitymethod1Introductiontofour-jawchucks02CareccentricitymethodTask1:Learnthekeyknowledgepoints1.TurningmethodEccentricworkpieceswithshortlengthscanbeturnedonthree-jawchucks.First,theoutercircleofthenon-eccentricpartoftheeccentricworkpieceisturned,andthenbetweenanyjawofthechuckandthejointsurfaceoftheworkpiece,agasketofpre-selectedthicknessispadd,andthebusbarandeccentricityarecorrected,andtheworkpieceisclampedbeforeturning.3.2Vehicleeccentricitymethod3.2.1Clampingwiththree-jawchuckTask1:Learnthekeyknowledgepoints2.MeasurementandinspectionofeccentricworkpiecesWhenadjustingthecorrectionsidebusandeccentricityoftheworkpiece,itismainlycarriedoutonthelathewithadialgaugewithamagneticbase(asshowninthefigureright),andcanbeturneduntilitmeetstherequirements.Aftertheworkpieceisturned,afinalinspectionisrequiredtodeterminewhethertheeccentricitymeetstherequirements.ThemethodistoputtheworkpieceintotheV-shapediron,measureitattheeccentriccirclewithadialgauge,andslowlyrotatetheworkpiecetoobserveitsrunout.3.2Vehicleeccentricitymethod3.2.1Clampingwiththree-jawchuckFig.3.2Three-jawchuckiseccentricTask1:Learnthekeyknowledgepoints3.2Vehicleeccentricitymethod3.2.2Clampingwithfour-jawsingle-actionchuckThealignmentstepsare:1.Loadthelinedworkpieceonthefour-jawchuck.Whenclamping,firstadjustthetwojawsofthechucktomakeitinanasymmetricalposition,andtheothertwojawsareinasymmetricalposition,andtheeccentriccirclelineoftheworkpieceisinthecenterofthechuck.2.Placeasmallplateandaneedleplateonthebedsurface,andaligntheneedletipwiththeeccentriccirclelinetocorrecttheeccentriccircle.Thenalignthetipoftheneedlewiththeoutercirclehorizontalline,andcheckwhetherthehorizontallineishorizontalfromlefttorightasshowninthefigureonthefollowingpage.Rotatetheworkpiece90°andcheckanotherhorizontallineinthesameway,thentightenthefeetandchecktheclampingoftheworkpiece.Task1:Learnthekeyknowledgepoints3.2Vehicleeccentricitymethod3.2.2Clampingwithfour-jawsingle-actionchuckFig.3.3Four-jawchuckiseccentricTask1:Learnthekeyknowledgepoints3.2Vehicleeccentricitymethod3.2.2Clampingwithfour-jawsingle-actionchuck3.Aftertheworkpieceiscalibrated,tightenthefourjawsagaintocut.Atthebeginningofcutting,