Quickchangeinsertsystemforafinishingarm.docx
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Quickchangeinsertsystemforafinishingarm
Quickchangeinsertsystemforafinishingarm
TECHNICALFIELD
Thisinventionrelatesgenerallytoaquickchangeinsertforafinishingarmandmoreparticularlytoaquickchangeinsertsystemforamicrofinishingarmonamicrofinishingmachine.
BACKGROUNDOFTHEINVENTION
“Microfinishing”or“superfinishing”,asitisknownintheart,isasurfacefinishingprocesswhereinagrindingmeansisbroughttobearagainstaworkpiecewhichhasbeenpreviouslyroughground.Microfinishingisalowvelocityabradingprocesswhichgenerallyfollowsroughgrinding.Becausemicrofinishingincorporateslowercuttingspeedsthangrinding,heatandpressurevariantsmaybeminimizedtoprovideimprovedsizeandgeometrycontrol.Thoseskilledintheartrecognizethatsurfacequalityorroughnessismeasuredinroughnessaveragevalues（Ra）whereinRaisthearithmeticalaveragedeviationofminutesurfaceirregularitiesfromhypotheticalperfectsurfaces.Microfinishingcanprovidesurfacequalityofapproximately1to10μin.（0.025to0.25μm）.Bearingsurfacesofcrankshafts,camshafts,powertransmissionshaftsinsimilarmachinecomponentsthatrotateonjournalbearingsurfacesgenerallyrequirethissurfacefinishforsatisfactoryoperation.
Conventionalmassproductionmicrofinishingmachineshavetheabilitytofinishallthebearingsurfacesonaworkpieceinoneoperation.Thesemachinescontainapluralityofabrasivetapesegmentswhicharealignedwithrespecttothebearingsurfaces.Inoperation,theworkpiecesarerotatedasthemicrofinishingmachinecausesabrasivetapesegmentstocontactandthusfinishthebearingsurfaces.Theselargemulti-abradingmachinesarecapableofsuccessivestepsinoneoperationincludingroughgrinding,grindingandmicrofinishing.
Asiscommoninlargescaleproduction,failuresmayoccuratoneormoreofthegrindingareasorabrasivetapepositions.Asaresult,workpiecesmaybeproducedwithoneormorebearingsurfaces（butlessthanallbearingsurfaces）whicharenotfinishedtotherequiredsurfacequalityspecifications.Insuchcases,thegrindingmachineoperatormustthenremoveandscrapthedefectiveworkpiece.Becausemicrofinishingisthefinalstageinsurfacetreatmentoperations,i.e.afterroughgrindingandgrinding,thescrappingofmicrofinishedpartsresultsinasubstantiallossofbothmaterialandlabortothemachinist.
Microfinishingprocessesareusedinautomotiveapplicationsinthemanufacture,repairandrebuildingofinternalcombustion（IC）engines.Suchenginesnotonlyrequirefinelyfinishedbearingsurfacesforengineefficiency,butalsoforincreaseddurabilityandlongevity.Intheinitialmanufacturingstage,crankshaftandcamshaftbearingsurfacesaremicrofinishedtoparticularroughnessspecificationsbypreviouslymentioned,conventionalmassproductionmicrofinishingmachines.
Intherepairorrebuildingstages,enginecomponentssuchascrankshaftsandcamshaftsfromfaultyenginesorolderengines,areremovedandregroundtoremovetentothirty-thousandthsofaninchofstockfromtheexistingbearingsurfaces.Thebearingsurfacesofthesecomponentsarethenpolishedormicrofinishedbyplacingtherespectiveworkpiecesonalatheandmanuallybringingamicrofinishingmaterialincontactwiththerotatingbearingsurfaces.Thismicrofinishingmaterialisoftenasectionofabrasivematerialmountedonasupportcorrespondinglyshapedtothebearingsurface.Itisgenerallyrecognizedintheindustrythatthesemanualfinishingoperationsareinadequateforachievingfinishedsurfacesofstandardquality.
Automotiverepairandrebuildingoperationsreclaimandrefinishworkpiecesfromhundredsofvariousinternalcombustionengineswithdifferentdesigns.Programmablycontrollingafinishingmachinetoaccepteachindividualworkpiecethatrequiresmicrofinishingfromdifferentinternalcombustionenginesisuneconomicalandinefficient.
SUMMARYOFTHEINVENTION
Thequickchangeinsertsystemofthepresentinventionhasbeendevelopedtomeettheneedforaquickchangeinfinishinginsertstodecreasemaintenanceandrepairdownofmicrofinishingmachines.andwellasaddgreaterflexibilityandspeedininserttypechanges.
Accordingly,itisanobjectofthepresentinventiontoprovideaquickchangeinsertsystemforafinishingarmwhichallowsinsertchangewithouttheuseoftools.
Anotherobjectofthepresentinventionistoprovideaprovideaquickchangeinsertsystemforafinishingarmwhichallowsinsertchangeusingapressfitconnectionsystem.
Afurtherobjectofthepresentinventionistoprovidequickchangeinsertsystemforafinishingarmusingdifferenthardnessqualitiesofpolymersandmetalstoallowforapressfitconnectionthatismanuallyoperated.
Itisastillfurtherobjectofthepresentinventiontoprovideaprovideaquickchangeinsertsystemforafinishingarmwhichusesvariouscorrespondlymatedkeyandkeywayshapestoallowforthepressfitconnection
Itisyetanotherobjectofthepresentinventiontoprovideaprovideaquickchangeinsertsystemforafinishingarmwhichusesvariouscorrespondlymatedkeyandkeywayshapestoallowforthepressfitconnectionwithouttheuseexternalfasteners.
Amorespecificobjectofthepresentinventionistoprovideaquickchangeinsertsystemforamicrofinishingmachinecomprisinganinsertbodyhavingaconnectionsideandafinishingside,theconnectionsideincludingakeywaydefinedbyacentralwallandapairofoppositelydisposedsidewalls,thefinishingsideincludingatleastonefinishingsupportsurface;andafinishingarmhavinganextendingkeyincludingacentralshoulderandapairofoppositelydisposedsidewallswhereintheinsertbodykeywayandfinishingkeyarecorrespondinglymatinglyshapedinapressfitrelationshipwherebytheinsertbodyisretainedonthefinishingarmduringfinishing.
AnothermorespecificobjectofthepresentinventionistoprovideAmicrofinishingmachinecomprisingasupporttablehavingameansforrotatingaworkpieceaboutanaxisandasliderailadjacenttheaxis,abaseincludingaboreforslidablyreceivingthesliderailandmovablewithrespecttotheworkpiece,abodyaffixedtothebasedefiningatrackadaptedtobepositionedadjacenttheworkpieceandhavingapairofpivotpinsspacedfromthetrack,aslidemovableonthetrack,afirstarmandasecondarmpivotableonthepivotpins,thearmshavingafirstendadaptedtoreceiveaquickchangeinsertsystemforfinishingtheworkpieceandasecondend,linkmeansconnectingtheslidetothesecondendofthearmsformovingthearmsaboutthepivotpinstoextendthearmsfromatreatmentenablingpositionadjacenttheworkpiecetoatreatmentpositionwhereinthesurfacegrindingmeansengagestheworkpiece,actuatingmeansformovablyengagingtheslideandthearms,theactuatingmeansoperativetomovethearmsbetweenthetreatmentenablingpositionandthetreatmentposition,andasleeveaffixedtothebodyforreceivingandguidingtheactuatingmeans,andasupportmeansaffixabletothebaseforpivotallysupportingthebodywithrespecttotheworkpiecewherebythequickchangeinsertincludesaaninsertbodyhavingaconnectionsideandafinishingside,theconnectionsideincludingakeywaydefinedbyacentralwallandapairofoppositelydisposedsidewalls,thefinishingsideincludingatleastonefinishingsupportsurface,andafinishingarmhavinganextendingkeyincludingacentralshoulderandapairofoppositelydisposedsidewallswhereintheinsertbodykeywayandfinishingkeyarecorrespondinglymatinglyshapedinapressfitrelationshipwherebytheinsertbodyisretainedonthefinishingarmduringfinishing.
Theaboveobjectsandotherobjects,featuresandadvantagesofthepresentinventionarereadilyapparentfromthefollowingdetaileddescriptionofthebestmodeforcarryingouttheinventiontobetakeninconnectionwiththeaccompanyingdrawings.
BRIEFDESCRIPTIONOFTHEDRAWINGS
FIG.1isasideviewofthequickchangeinsertandfinishingarmofthepresentinvention;
FIG.2isafragmentarytopviewofthequickchangeinsertofthepresentinvention,includingaworkpiece;
FIG.3isasideviewofthequickchangeinsertofthepresentinvention;
FIG.3aisasideviewofanalternativeembodimentofthequickchangeinsertofthepresentinvention;
FIG.4isasideviewofamalternativequickchangeinsertofthepresentinvention;
FIG.5isaperspectivepartialviewofamicrofinishingmachineusingthequickchangeinsertofthepresentinvention;
FIG.6isasideviewofamicrofinishingmachineusingthequickchangeinsertofthepresentinvention;and
FIG.7isasideviewofafinishingarmusingthequickchangeinsertofthepresentinvention.
DETAILEDDESCRIPTIONOFTHEINVENTION
ReferringnowtoFIG.1,thereisshownaquickchangeinsert10andfinishingarm12ofthepresentinvention.Quickchangeinsert10hasaninsertbody14includingaconnectionside16andafinishingside18.AsshowninFIG.1,thequickchangeinsertisconnectedtothefishingarmviaapressfitconnectionwhichisaselfcontainedmeansforconnectingtheinsertbody14tothefinishingarm12.Thefinishingside18definesapolishingsupportsurface32.Adjacentthesupportsurface,thereisshownamicrofinishingtape19,whichisdescribedbelow.Workpiece20isshownasacamshaft,butmaybeanyworkpiecewhichrequiresafinishedsurface.
Inthepreferredembodiment,theselfcontainedquickchangemeansforconnectingtheinsertbody14tothefinishingarm12isintegralwiththeinsertbody14.Further,inthepreferredembodiment,thequick
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