MillingWorkerInternshipLog
Thetwo-weekpracticaltrainingformillinghasetoasuccessfulclusion.Thisinternshipwascarriedoutintheseicaltrainingworkshop.Isystematicallygottoknowandstudiedthebasicstructure,operatingprinciples,processingteologiesofhorizontalmillingmaesaicalmillingmaes,aswelsworkshopsafetyregutions.Frombeingunfamiliarandnervousaboutmillingequipmentattheverybeginningtobeingabletoindepelypletethemillingofsimplepepsandgrooveworkpieces,mymeicaloperationability,processthinkingandawarenessofsafeproduhavebeelyimproved.Thistrainingallowedmetostepoutoftextbooksandengageinpracticaloperations,andIdeeplyrealizedtherigorous,meticulousandpragmaticprofessionalcharacteristicsofthemeicalprocessingindustry.Isummarizetheinternshiptentandexperienceasfollows.
Attheinitialstageoftheinternship,teachersfirstcarriedoutsafetyprodueducationandtrainingformillingworkers,whichwasthefirstandmostimportantlessonofmeicalprocessingtraining.Theteacherexpinediailtherulesaionsofthemillingworkshop,forbiddendangerousoperations,requirementsforwearingborprotearticlesanddisposalmethodsforsuddenacts.Ilearhatmillinginvolveshigh-speedcuttiions.Thespihemillingmaerotatesfastandthemillingcutterissharp.Ironfilings,vibrationandnoisewillbegeedduringprocessing.Carelessnessmayeasilyleadtosafetyactssuchasscratches,collisionsandclothesbeingrolledintothemae.Therefore,itismandatorytowearworkclothesandanti-smashingshoeswheeringtheworkshop.Wearingjewelryainglonghairexposedareprohibited.Itisnotallowedtoholdworkpiecesbyhandorstrideoverrunningequipmentduriion.Specialbrushesmustbeusedtoironfilingsaftershutdown,anddiretactbyhandisstrictlyforbidden.Throughsafetytraining,Ipletelyabandonedflukementalityaablishedtheprocessingphilosophyof"safetyfirst,preventionfirst",yingasolidsafetyfoundationforsubsequentpracticaloperations.
Afterthesafetytrainiartedtolearnaboutmillingmaeequipment,aswelsitsbasicstructureandwprinciples.Vertiee-typemillingmaes,ohemostwidelyusedequipmentinmeicalprocessing,weremainlyadoptedinthistraining.Theteacherexpihecoreposofthemillingmaeonebyone,includingthespindle,spindlegearbox,feedgearbox,liftingworktable,crossslide,longitudinalworktable,handwheel,dialgauge,coolingsystemandlubricationsystem.Ifullygraspedthefunsofeapohespindlecmpsthemillingcutterandprovideshigh-speedrotatingpower;thegearboxadjuststhespindlespeedae;thethree-axisworktablerealizesthemovementofworkpielongitudinal,horizontaicaldirestopreciselytrolthecuttingpositionah.Meanwhile,Idistinguishedthecorediffereweenmillingmaesahesrotateworkpieceswithfixedtools,whilemillingmaesrotatecuttersathighspeedwithworkpiecesfedsteadily.Millingmaesaresuitableforprocessingpnes,grooves,steps,gears,keywaysandotherplexshapeswithawiderrangeofapplications.
Withsolidtheoretiowledge,wemovedontobasicpracticaltraining,startingwithno-loadoperationofthemillingmaeandreadingtrolofdialgauges.Accuratetroloffeedrateisthecoreskillformillingworkers.Eachsmallgridonthehandwheeldialofthemillingmaecorrespondstoafixedmovingdistahehandwheelmustbeturnedevenly,slowlyandaccurately,andrecklessshaking,rapidfeedingaraveloperationsareforbidden.Atfirst,Iwasnotprofitinhandwheeltrol,prooexcessivefeedandpositioioinginbenchmarkerrorsofworkpieces.Afterrepeatedpractice,Igraduallymasteredtheoperationrhythm,learoreaddataaccuratelyandtrolcuttihacctomaingallowandskillfullypletedprecisethree-axispositioningoftheworktable,greatlyimproviabilityandaccuracyofoperation.
Aftermasteringbasicoperations,weofficiallycarriedoutmillingtrainingonworkpieces,fogonthreefualprocessingteologies:pnemilling,stepmillingandright-anglegroovemilling.Beforeprocessing,Istrictlyfollowedtheteologicalprocess.First,Iiedthedimensionofbnkworkpiedremovedsurfaceoxidescale.Theheworkpietoabenchvitheworktable,leveledtheworkpiedcmpeditevenlytoensurenolooseningoroffsetduringprocessing.Afterg,asuitableendmillingcutterandspindlespeedwereselectedacctotheworkpiecemateriandprocessingrequirements.Lowrotatingspeedandrgefeedratetedinroughmaingtoremoveexcessallowance,whilehigherrotatingspeedandsmallerfeedratewereusedinfinishmaingtoguarahesurfaishofworkpieces.
Pnemillingisthemostbasicwprocedure,aimingtofttentheunevensurfaceofbnksandeheftnessofthereferene.Duringmyfirstmillingpractievenmillinglinesandtooljointmarksappearedonthesurfadertheteacher'sguidance,Ifoundthattheproblemswerecausedbyunstablefeedspeedandinaccuratetoolsetting.Insubsequeions,Ipletedprecisetoolsettinginadvance,maintaineduniformfeeding,reasonablytrolledcuttihandductedmultipleshallowcuttingpasses,whicheffectivelyimprovedthesurfacequalityofworkpieces.Inthepracticeofstepandgroovemilling,Imasteredtheprocessingideaofyeredcuttingtoavoidexcessiveoimecuttihatwouldcausecutterwear,workpiecedeformationandburrsgeedbytoolchatter.Afterprocessing,Imeasuredthelength,widthahofworkpieceswithcalipersandstraightrulers,paredthedatawithtolerancerequirementsondrawings,aedlycorrectedmaingerrradu
allymasteredthepleteworkflowincludingdrawingreading,toolsetting,processingandiion.
Duriraining,Ialsorealizedmanydefiyown.Intheearlystageofprocessing,Iwasunskilledatreadingdrawingsandfusedinprocesspnning,uoreasonablyarraheprocessingsequence.Ickedpatienceduriionandpursuedspeedatthecostofprecision,leadingtodimensionalout-of-tolerandirreguredgesofsomeworkpieces.Atthesametime,Ifoundthatmeicalprocessingisaprofessionthatattachesgreatimportaodetails.Evenanerrorof0.1millimeterwillreheworkpiequalified.Nocarelessnessisallowedioolsetting,feedingandga.Withguidanteachersaedpracticalexercises,theseproblemsweregraduallycorrected.Idevelopedstandardizedwhabits:readingdrawingsfirst,formutingprocesses,thendugmaingandfinallyre-iing.Thequalificationrateandpreymaedworkpieceskeptimproving.
Inaddition,Ilearneddailymaintenanowledgeofmillingmaes.Aftertrainingeveryday,weocutoffthepowersupplyoftheequipmentinatimelymanner,ironfilingsontheworktable,wipetheequipmentsurface,addlubrigoiltotransmissionpartssuchasguiderailsandhandwheels,checkthewearditionofmillingcuttersandproperlystoretoolsandmeasuringinstruments.Standardequipmentmaintenannotoendtheservicelifeofmaerybutalsoguaraheprocessingaccurasubsequentwork,whichisalsoaialprofessionalqualityformillingworkers.
Ihavegainedalotfromthistwo-weekmillingtraining.Intermsofskills,Ihavemasteredthebasicoperatioicalmillingmaes,fualmillingprocesses,workpieceganddimensionaliionskills,readbasicmeicalprocessingdrawingsanduaeologicalprinciplesofmilling.Intermsofprofessionalliteracy,Ideeplyexperiehecraftsmanspiritofpursuingperfe,rigorousnessandcarefulnessinthemaeryindustry,andrealizedtheimportaandardizedoperation,safeproduandpatieherearenoshortcutsinmeicalprocessing,andallqualifiedfinishedproduefromrepeatedpractidextremetroloverdetails.
Thisinternshipalsohelpedmereizemyshortings.Thereisstillmuforimprovementinmyprocesspnningabilityandpreciseoperationprofifuturestudies,Iwilltiosolidatemyprofessionalfoundation,practicemore,thinkmoreandsummarizemore,mastervariousprocessingteologiesprofitly,tinuouslyimprovepracticalskillsanddevelorousprofessiohics,soastoyasolidfoundationforfuturejobsretedtomeicalprocessing.Thismillinginternshipisavaluableexperienotonlyimprovedmyprofessionalskillsbutalsotemperedmymentalityandwillpower,enablioformadeeperandmoreintuitiveuandingofthemeicalmajor.Ihavebeedtremendouslyfromit.