物流专业英语教程（第4版） 课件 Unit 9-A Materials Handling.pptx

物流专业英语教程

（第4版）;PassageA;;;Muchoftheprogressinmaterials-handlingsystemshasoccurredinfullyautomatedorsemi-automated,computer-controlledequipmentusedforpartsstorage/retrievalormovementinmanufacturinganddistribution.

Thesesystemsimproveergonomicsandsafety,makingmaterialshandlingmoreefficient.;Storage/RetrievalSystems;Theinput/output(I/O)pointiswhereloadsarebroughttoortakenfromtheautomatedsystem,typicallyviaconveyorsorautomatedguidedvehicles(AGVs).

EachaislehasitsownI/Opoint,consistingofconveyorsthattransferloadsbetweenthestorage/retrievalmachineandotherpartsofthesystem.;Work-in-ProgressStorage;Theshifttosmallerloadsizeshasledtoanincreasedemphasisonone-pieceflow,automatedconveyors,electrifiedmonorails,andAGVs.Thisincreaseinfrequencyofparttransfersrequiresefficientsystemstomanagetheflowofmaterialsbetweenworkcentersandmachines.;;;1.However,itisespeciallyassociatedwithpartsflowinmanufacturingsystemsorwarehousing/distributionsystems,wherecontrollingthematerialflowandensuringthatparts(orunitloads)areavailableisacriticaltask.;2.SuchatrendisanaturalconsequenceoftheJust-In-Timeoperationprinciple,whichdrivesinventorylevelsdownthroughoutthesystembutalsorequirestightercontrolofwork-in-progress(i.e.knowingtheexactquantityandstatusofalltheparts,loads,orjobsonthefactoryfloor).;3.Althoughsuchsystemsallowverylittleornotailortomeetexactspecifications,theycanconsiderablyshortentheleadtime(primarilythetimerequiredtoengineer,install,andtestthesystem)whilereducingoverallsystemcost.;What’sthemaindifferencebetweentheautomatedsystemsandthestorage/retrievalsystems?Pleaselisttherespectiveadvantagesanddisadvantagesaboutthem.;Howmanypartsinlogisticsareassociatedwiththematerialshandling?;TheEndofUnit9-A