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1、附錄A外文文獻原文Theconnectingrodisoneofthefivebigengineengineisimptantsafetypieces.Thequalityoftheconnectingroddirectlyinfluenceengineperfmancesecurity.Theconnectingrodfromthestructureisnotcomplexbuttheconnectingrodbelongstothe

2、typicalirregularpartshighaccuracyconnectingrodprocessingtechnologyismecomplex.Thisarticlethroughtotheconnectingrodprocessingtechnologyintroductiontargetedsupptfconnectingrodbrokenofnewtechnologynewmaterialsfspecificproce

3、ssanalysistorealizethedevelopmentoftheadvancednatureoftheconnectingrodprocessing.Theconnectingrodistotransferthepoweroftheimptantmovingpartsitsmallheadwiththepistonsfreciprocatingmotionthemajpartofthecrankshaftrotarymoti

4、onaswiththerodbodyinsizeheadmovementunderthesynthesisofswing.Inadditiontowithstcyclicalchangeaswellasgasimpactbearthelargertheinertialfce.Thisrequiresconnectingrodfatigueresistanceimpactresistancehavetheenoughstrengthsti

5、ffnessgoodtoughness.Becausethestructureoftheengineisdifferentconnectingrodstructurevaryslightly.ButitsbasicallypistonsalesbyKongDuan(smallheadend)crankshaftpinKongDuan(bigheadend)rodbodyofthreeparts.ThecrankshaftpinKongD

6、uanfseparatestructurebodycoverboltedconnection.ThesizeoftheconnectingrodheadheightofthedifferentstructureaccdingtoacontourhightwokindsranginginVtypeengineindertoenablethecompactstructuretheconnectingrodoftenusethestructu

7、reofhighrange.Themodernhighperfmanceenginestotherequirementsoftheconnectingrodislightweighthighstrengthgoodstiffnesstheinertialfceissmallasfaraspossiblethereinfcedtechnologysoon.Developmenttrendisshtconnectingrodstructur

8、e.EnginemovingpartsoftheweightlosshelptoreducetheenergyconsumptionnoiseCanimproveengineemissions.Onshtofconnectingroddembecausetheengineisheadedinsmallsizelargepowerthedirectionofdevelopment.Theconnectingrodmechanicalpro

9、cessingofthemaintechnicalrequirementshereinsmallheadconnectingrodIT7cylindricity0.01mmsurfaceroughnessRa1.6umThebigendholeIT5~IT6surfaceroughnessRa0.8umTheconnectingrodsizeheadholecenterdistance0.03~0.05mmTheconnectingro

10、dsizeheadholeparalleldegree0.02~0.06100mmTheconnectingrodendprocessinggeneraluseofthegrindingprocess.Theconnectingrodblankofthetwofgingfacepressurefinesizeprecisioncanreach0.15~0.20mm.Thepurposeistoimprovethepurepressure

11、blankprecisionreducesurplusmakeitnolongerafterturningmillingroughmachiningcandirectgrinding.Grindingwayhastwokinds:1).Inmethanverticalshaftgrindingwheelgrindingsurfacegrinderbossesonthisisakindofthemostcommonlyusedinthem

12、achinetoolthewayroundthedecatedgrindingtheadjacentatbothendstheconnectingrodtoendafixturesmallheadexternalcircularbigheadaprofilepositioninggrindingthefaceofaflipsidesplacedinanotherclampingfixturegrindinganotherendthrou

13、ghtwotimestheinstallationtherotationwithtwolapstheaflipfinishgrindingmachinebothsidesinatablecaninstallDuoGefixturestheloadingdisgingtheauxiliarytimeprocessingtimeoverlapsothisisahighlyefficientprocessingmethod.Sizeofthe

14、connectingrodhighclassmultipurposebiaxialverticalshaftbossesmesurfacegrinderheadtothesizerangeoflinkusedthehighverticalfiveaxisfrustumsurfacegrinding.2).Adoptshizontaldoublegrindingwheeltothegrindingmachinethegrindingver

15、ticalshaftgrindingwheelgrindingmachinemesimilarinalargegrindingwheelonthedrumdiameterwheelequippedwithDuoGefixtureblankinthefixturebothsidestothelocationofthegrindingwheelthehizontalaxisinstalledinthetwoendfacegrindingwk

16、piecefixturethiskindofmeansefficiencyisveryhighalsoalsohastheassistanttimetheacteristicsoftheprocessingtimeoverlap.Sincethetwoendatthesametimewasgrindingnolongerneedtoturnoverfacesecondinstallation.2.Bodycoverpointsinthe

17、planeofthesurfaceotherprocessingTheconnectingrodinadditiontotwoendotherthanaplaneincludingbodycoverpointspositioningofthefacewithsideoverallsizeheadofblankconnectingrodbodycutcoverwhencuthalfsurfacemostlyinsuccessivebroa

18、chingmachinecut.Successivepullwiththefollowingfeatures:1).Apullcutting.Inalargetransmissionchaininturnonseveralclampinstalledwithpullcuttingthroughtheareathecutcuteachpull.Thesefixturetypecantherefecanbedifferentwillgene

19、rallyneedtwosetsonbroachingmachineinthecuttingprocesscompletethroughthewkpiecewasinstalledindifferentkindsofjigmethodinamachinecombinationonimplementation.2).Inpullnoemptycuttoolfcuttingprocesslosscuttingtoolsmotionlessf

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