Bentley Handcrafted LuxuryWord下载.docx
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Putonyoursafetyglassesandpreparetobeimpressed,asyouenterthestate-of-the-artBodyAssemblyHallatCrewe.Thisisanenvironmentinwhichcriticaltolerancesrule,whereprecisiontoolingandskilledoperatorscombinetoachievedizzylevelsofdimensionalaccuracyandintegrity.Wheregapsarerequiredbetweensteelpanels,forexample,theyareuniform,setatexactly3.5mm.
Four-axismeasuringmachineschecknofewerthan2,500measuringpoints.Andtheachievementofjoinsbetweenbodypanelsthatarealmostinvisibleistheresultofabandoningstandard"
hotweld"
technology,whichcancausedistortionofpanelsattheweldpoints.InsteadCrewehasadoptedplasma-brazing"
coldweld"
technology,whichleavesapristinefinishreadyforpainting.
Behindorangesafetycurtains,theplasma-weldingteamscanbeseenatworkonthemajorbodyassemblies.Elsewhereinthehall,suspendedcomputer-controlledgunsareusedtoassemblebodysectionsmountedonjigs.Thesehand-heldtoolsallowaccuratepositioningofthe6,500spotweldsrequiredtooptimisetorsionalrigidityoneachmonocoquesteelbodyshell.Noothermanufacturergoesinforspot-weldingonthisscale.
Thevisitorwillnoticethatalthoughtherearefanstoblowanyfumesawayfromthewelders,theyraiseonlythelightestbreeze.ThatistoavoidblowingdustaroundtheBodyAssemblyHallwhich,likeeveryotherareaatCrewe,isconspicuouslyclean.
Everythinghereisdonebyhand,fromattachingthe240individualcopperandothermetalstudsusedinthefloorpantoholdthewiringloomsandcarpetinginplace,toapplyingthesealantwhichwilllaterbebakedintheoven.Between540and560componentsareusedtoconstructeachbody.Bythetimeeachoneleavestheassemblyhall,itwillincorporatesome3mofMIGwire,1.5mofbrazing,andabout200nuts.
Acomputer-controlledHemmingpressisanimportantadditiontotheBodyAssemblyHall.Thiscandoin12minuteswhatwouldoncehavetakenaday.Loadedandoperatedbyafour-manteam,itpressesouterskinsontohingedcomponents-doors,bootsandbonnets-atupto100tonnes.Theskinsaregluedratherthanwelded,tobesetinanovennohotterthanahairdrier.Twohundredandten"
closures"
canbecompletedeachweekbytheteam.
Twiceayear,acompletebodyisbuiltintheBodyAssemblyHallonlytobetakenapartagain.Thisisdrastictesting,butonaneverydaybasis,oneinfivecomponentsischisel-checkedforstructuralefficiency.
"
Thereisaveryhealthy,competitiveatmosphereinthebodyshop,"
saysTeamLeaderColinMorrey,whohasbeenwiththecompanysince1974.Alookatthewallchartswhichplottheprogressofeachteam-memberintermsofmulti-taskingabilityunderlinesthis.Therearesome13teams,eachcontainingtentoadozenskilledandsemi-skilledworkers.
Thecompanybelievesinthevaluesofexperiencecombinedwiththoroughon-goingtraining-andloyalty.Colin,likemanyothersatCrewe,followedhisfatherhere,andhisfatherbeforehim.
Manyoftheguyshadworkedintheoldmachineshop,butwhentheymovedinhere,fewofthemhadeverweldedbefore,"
hesays."
Atfirstitwaslikedoingajigsawpuzzlewithoutthelid,buttheylearnt-everythinghastobedoneinanexactsequence.Theyhadsixmonthsoftraining,workedonpracticecarsandwenttoseehowitwasdoneelsewhere."
Now,withbuildratesrising,morepeoplearebeingtakenon.
Ittakesaboutthreeweekstoturnthose540-oddcomponentsintoacomplete,inspectedbodyshellreadytogoontothenextstage.Workingasingleeight-hourshift,theteamscurrentlysend35bodiesontheirwaytothepaintshopeachweek.Andaseachbodygoesonitsway,itisalreadyearmarkedforoneparticularcustomer...
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