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WelcometoourcompanyforinvestigationandIsincerelyhopeyouwillgiveussomeprecioussuggestions.
Now,wewouldliketomakearesponsetoyourconnectingrodsbyair.
1.Therearesomedrawbacksexistedinblankofconnectingrodsinthemodel2-ICR6125-1R、3-ICR5700PR、2-ICR6000R、2-ICR6385-1Rand3-10198922R.Andwediscussedwiththeforgingfactory.Theytoldusthatitdoesnotmatter.Consideringtheexpensivematerialfee,wedidn’tblamethemforthesemistakes.Butunfortunately,thisviewofpointisabsolutelywrong.Wewenttotheforgingfactoryagainandhadacommunicationwiththemabouttheexistingqualityproblems.Theforgingfactoryturnedtheirviewsandpromisedwillstrictlyselecttheinferiorconnectingrodoutnexttime.Wearehavinganoverallinspectionforthestockconnectingrodsnow.Oncefoundtheinferiorones,wedeclarethemneverbeingused.Wetakesomemeasuresasfollowingforguaranteethatwewillgetthesuperiorconnectingrodsfromnowon.Firstly,thepurchasedblankneedstobeoverallinspected.Thegoodonesarepaintedandthentheyaremovedtotheprocessingprocedure.Secondly,beingstrictatselectingtheinferiorproductsintheprocessingprocedure,oncefound,leavethemalongandneverputthemintoproduction.
2.Thedrillingproblemsarefoundintheconnectingrodmodel3-10198922R、2-350-6125-2100-LRand2-454-6700-2200R.Thefirstproblemexistsinmodel3-10198922Rand2-454-6700-2200Rwhendrillersaredrillingthelocatingholeandthesteelhole.Thereasonmightbethatthedrilldidnotpolishedontherightplacesothatmakestheholeoverlargeandwhenthebodyofrodandthetopofrodaregottogether,thelocatingholeandsteellaggingdoesn’tplayaroleofpositioning.Thesecondproblemexistsinconnectingrobmodel2-350-6125-2100-LR.Theboltcannotwhirl.Themaincauseismightbetheabradeddrilldidnotre-sharpintimeandconsideringtheresistanceofdrill,itshifted.Thus,itcausedthedeviationofdifferentaxialityandverticalityoversizedinbodyofrods,screwedholesandlocatingsteellagging.Inordertoavoidtheproblemofwhirlingproblemsandtheproblemsmentionedabove,ourcompanytogetherwiththealltechnical,managerialpersonalsandoperatorshadacomprehensivecommunicationanddecidedtotakethefollowingmeasures.First,strengthentheinspectiontofrockandguaranteethequalityofproductsbyfrockingprecision.Second,strengthenthestrictinspectionandsupervisiontodrillingprocessing.Third,restricttherevolvingspeedandspeedratesofdrillingmachinetooperatorsandguaranteetheaxialityandverticalityforbodyofrod,thetopofrod,screwedholesandlocatingholeofsteellagging.Fourth,drillersareaskedtopolishdrillssothattheycouldbesharpandcutsmoothly.Finally,technicalinspectoronthespotandoperatorsarerequiredtoregularlyusethemeasuregaugetocheckthesizeandaxialityofscrewedholeandlocatingholeofsteellagging.
3.Themainproblemsforthemodel2-ICR5400-927R、2-ICR5700Rand2-454-6800-2200Raretheover-tightnessoruncleannessinscrewedholes,whichleadtotheboltgettingstuck.Nowweneedtocleanalltheconnectingrodsinsideandoutside.AndthenusetheboltmadeinAmericatocheckeachpieceofboltoftheconnectingrod,inordertomakesurethateveryboltworkssmoothly.Inordertoavoidtheproblemsmentionedabove,wearegoingtotakethesemeasures.First,strengthentheexaminationandrepairfordrillingfrockandguaranteetherequiredprecision.Second,strengthenthestrictinspectiontodrillingprocessing,superviseandrestrictthespeedandfeedratesofthedrill,andguaranteetheaxialityandverticalityofrods,screwedholesonthetopofrodsandlocatingholeofsteellagging.Third,regularlyusethemeasuregaugetocheckthesizeandaxialityofscrewedholeandthelocatingholeofsteellaggingforthesakeofpreventingthread’sbottomholetobetightbecauseofitsundersize.Fourth,strengthenthestrictinspectiontoscrew’sprocessing.Frequentlyusetheplugthreadgaugetocheckwhethertheabradedscrewtapsarereplaced.Finally,usetheboltmadeinAmericatoexaminewhethereveryscrewedholeofconnectingrodiscleanedornot.
4.Theprobleminmodel2-454-6700-2200Rand10256401-3existsinchamferoversizeandhavingrippleinboltbase.Themaincauseforchamferoversizemightasfollowing:First,thecarelessnessofoperatorsmadethemachinetoolunlimited.Second,overuseandretractslowness.Thereasonsforcausingrippleinchamferareasfollowing:Ononehand,didn’tdealwiththehornworkintime.Ontheotherhand,thehightherevolvingspeedofthemachinewhendealwiththechamfer.Wearehavinganoverallinspectionforthestockconnectingrodsnow.Oncefoundtheconnectingrodsexistinginchamferoversizeandhavingrippleinboltbase,wewillreprocesstheboltbase.Wewilladoptthemachinelimitedforthesakeoftheaboveproblemsneverappeared.Nowweareaskingtheparticularpersontotakeresponsibilityontherelatedjobs.
真的累啊一个上午。希望能够帮到你,谢谢!
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