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MechanicalProcessingEnglishPPTCourseware目录IntroductiontoMechanicalProcessingBasicknowledgeofmechanicalprocessingMechanicalprocessingflowEnglishvocabularyinmechanicalprocessingEnglishexpressionsinmechanicalprocessingAnalysisofmachiningexamplesCONTENTS01IntroductiontoMechanicalProcessingCHAPTERMechanicalprocessingisamanufacturingprocessthatusesmechanicalforce,tools,andotherequipmenttoshape,modify,orformmaterialsItinvolvesprocessessuchascutting,grinding,drilling,boring,milling,andsavingMechanicalprocessingisusedinvariousindustries,includingautomotive,aerospace,andheavymachinerymanufacturingDefinitionofMechanicalProcessingCuttingBoringMillingSavingDrillingGrindingThisprocessinvolvesremovingmaterialbyusingacuttingtoolItcanbedonewithhandtoolsormachinetoolsGrindingisaprocessthatusesagrindingwheeltoremovematerialandimprovesurfacefinishItiscommonlyusedforfinishingandpolishingmetalpartsDrillingisaprocessthatusesadrillbittocreateholesinmaterialsItiscommonlyusedinthemanufacturingofvariouscomponentsandassembliesBoringisaprocessthatenlargesexistingholesorboresItisusedtoimprovetheaccuracyandsurfacefinishofholesMillingisaprocessthatusesamillingcuttertoremovematerialandcreateflatsurfacesorspecificshapesItiscommonlyusedinthemanufacturingofmetalcomponentsSavingisaprocessthatcutsmaterialsusingasawbladeItiscommonlyusedinwoodworkingandmetalcuttingoperationsTypesofMechanicalProcessingMechanicalprocessingisusedinvariousmanufacturingindustriestocreatecomponentsandassemblieswithspecificshapes,dimensions,andsurfacefinishesItisessentialintheproductionofmachines,equipment,andotherindustrialproductsMechanicalprocessingalsoplaysanimportantroleinthemaintenanceandrepairofmachinesandequipmentbymachiningpartstorestoretheiroriginalshapeanddimensionsApplicationofMechanicalProcessing02BasicknowledgeofmechanicalprocessingCHAPTERMetallicmaterialsclassificationMetallicmaterialsarecommonlyclassifiedintoferrousmaterialsandnonferrousmaterialsFerrousmaterialsrefertoironandsteel,whilenonferrousmaterialsmainlyrefertocopper,aluminum,lead,zinc,titaniumandtheiralloysPropertiesofmetalmaterialsMetalmaterialshavegoodconductivity,malleability,roughness,andcorrosionresistanceTheyarewidelyusedinvariousfieldssuchasmachinery,transportation,architecture,andenergyMetallicmaterialPurposeofheattreatmentHeattreatmentisaprocessthatchangesthemicrostructureofthematerialthroughheatingandcooling,improvingthemechanicalpropertiesofthematerialCommonheattreatmentprocessesCommonheattreatmentprocessesincludeannexing,queuing,tempering,carbonization,nitration,andotherprocessesTheseprocessescansignificantlyimprovetheroughness,hardness,andwearresistanceofthematerialHeattreatmentprocessToolsandfixturescanbeclassifiedashandtools,powertoolsandmeasuringtoolsaccordingtotheirfunctionsHandtoolsincludescreendrivers,hammers,rewrites,etc;Powertoolsincludeelectricdrills,grinders,saws,etc;Measuringtoolsincluderules,callers,levels,etcClassificationoftoolsandfixturesWhenselectingtoolsandfixtures,itisnecessarytoconsiderthecharacteristicsoftheworkpiece,theprocessingrequirementsandpersonalhabitsThecorrectselectionoftoolsandfixturescanimproveworkefficiencyandprocessingqualitySelectionoftoolsandfixturesToolsandFixturesMachinetooltypeMachinetoolscanbeclassifiedaslathes,millingmachines,drillingmachines,grindingmachines,planners,shapers,andothertypesaccordingtotheirfunctionsEachtypeofmachinetoolhasitsowncharacteristicsandapplicationscopeClassificationofmachinetoolsWhenselectingmachinetools,itisnecessarytoconsidertheprocessingrequirementsoftheworkpiece,processingefficiencyandeconomicefficiencyThecorrectselectionofmachinetoolscanimproveprocessingqualityandworkefficiencySelectionofmachinetools03MechanicalprocessingflowCHAPTERPreparationofrawmaterialsApplysurfacetreatmentssuchascleaning,grading,andpricingtoenhancetheadhesionandcorrosionresistanceoftherawmaterialsSurfacetreatmentEnsurethequalityandsuitabilityofrawmaterialsformechanicalprocessingRawmaterialsinspectionPreparetherawmaterialsformachiningbycutting,shaping,andothernecessaryoperationsStockpreparationMaterialremovalRemoveexcessmaterialfromtheworkpiecetocreatearoughshapeToolselectionSelectappropriatetoolsandcuttingparametersforeffectivematerialremovalFixturedesignDesignfixturestoholdtheworkpiecesecurelyduringroughmachiningoperationsRoughmachining03FixturedesignDesignfixturesthatallowforprecisionpositioningandholdingoftheworkpieceduringfinalmachiningoperations01SurfacefinishAchievethedesiredsurfacefinishanddimensionalaccuracyoftheworkpiece02ToolpathplanningPlanthetoolpathtominimizetoolwearandmaximizematerialremovalefficiencyFinishmachiningSurfacetreatmentSurfacefinishesApplyvarioussurfacefinishessuchaspainting,organizing,andpowdercoatingtoenhancetheappearanceanddurabilityoftheworkpieceSurfacecleaningCleantheworkpiecesurfacetoremoveanydebrisorcontainersbeforeapplyingsurfacefinishesSurfaceinspectionInspectthesurfaceoftheworkpiecetoensureitmeetstherequiredqualitystandards04EnglishvocabularyinmechanicalprocessingCHAPTERSteel,aluminum,copper,titanium,magnesium,nickel,cobalt,zinc,lead,tinMetalsToolsteels,stainlesssteels,highspeedsteelsAlloySteelsGrayiron,ductileironCastIronsEnglishvocabularyrelatedtometallicmaterials01Annealing:Softeningthemetalbyheatingandcooling02Sintering:Heatingmetalpowdertobondthemtogetherwithoutmelting03Formingmetalbyheatingandhammeringorpressing04PrecisionHardening:StrengtheningmetalbycontrolledheatingandcoolingEnglishvocabularyrelatedtoheattreatmentprocessesEnglishvocabularyforcuttingtoolsandfixturesCuttingToolsDrills,taps,reactors,millingcutters,lathetoolsFixtureTypesVise,Chuck,Collet,ToolPostVerticalmillingmachines,horizontalmillingmachinesMillingMachinesEnginelathes,turretlathesLathesBenchdrills,drillpressuresDrillingMachinesSurfacegrinders,centerlessgrindersGrindingMachinesEnglishvocabularyformachinetooltypes05EnglishexpressionsinmechanicalprocessingCHAPTERCarbonsteel,stainlesssteel,alloysteel,toolsteel,castiron,etcSteelPurealuminum,aluminumalloy,etcAluminumCopperandcopperalloys,etcCopperTin,zinc,lead,nickel,titanium,etcNonferrousmetalsEnglishexpressionformetalmaterialsEnglishexpressionforheattreatmentprocess01Annealing:Softeningandtoolingofmetalmaterialsbyheatingandslowlycooling02Quenching:Rapidcoolingofmetalmaterialsinoilorwatertoimprovehardnessandstrength03Heatingofqueuedmetalmaterialstoalowertemperaturetoreduceinternalstressandimprovetoughness04Surfacehardening:HardeningofthesurfacelayerofmetalmaterialsbyheatinginaprotectiveatmosphereCuttingtoolsDrills,taps,reactors,millingcutters,lathetools,etcAccessoriesCuttingfluid,lubricant,toolholder,etcFixturesVise,clampingdevice,holdingdevice,etcEnglishexpressionforcuttingtoolsandfixturesEnglishexpressionofmachinetooltypeDrillingmachineUsedfordrillingoperationsMillingmachineUsedformillingandplanningoperationsLaterUsedforturningandthreadingoperationsGrindingmachineUsedforgrindingoperationsOthermachinetoolsSawingmachine,punchingmachine,bendingmachine,etc06AnalysisofmachiningexamplesCHAPTEREngineComponents01Engineblocks,cylinderheads,crankshafts,camshafts,andconnectingrodsaresomeofthemostcommonautomotivepartsthatunderprocessmechanicalprocessingChassisComponents02Suspensionsystems,steelcomponents,andbrakesystemsareexamplesofchassiscomponentsthatrequireprecisionmachiningBodyandExternalComponents03Bodypanels,bumpers,andotherexternalcomponentsareoftenmachinedtoensuretheyfitproperlyandhaveapleatingappearanceExamplesofMechanicalProcessingofAutomotivePartsAircraftEngineComponentsTurbineblades,compressordisks,andshaftsarejustsomeofthecomponentsthatrequ