leansixsigmaapplicationinautomobileengineproductionprocess(編輯修改稿)
2025-07-23 07:22 本頁(yè)面
【文章內(nèi)容簡(jiǎn)介】 EndPackagingStorageamp。transportFinish products warehouseC/T=8hVAT:2minNVAT:3hChart : Before improvedC/T=61min4 hVAT:1minNVAT:60minChart : After improvedUnit（min）BeforeAfterImprovedLead time%Circle time%VAT362%NVAT%Chart 4:Achivement on Lead time reducingDefine value:Value customer needsCCPOur targetCapabilityCTQ of qualityDefects rate(each type)~%Key characterStability per 10 KmFailure rate%~%DeliveryTimely delivery99%94%PriceCompare with petitor(Avg)ROI30%NPV200 MChart 5:Our target and Capability of sales and operationWe should control the quality within LSL and USL,considering process capability and how much we should invest on process capability.Measure:What should we measure?Where should we measure?How should we measure?We considered these 3 questions after we called leaders and representatives from 5 departments meeting together,took brainstome to improve our process to meet tightening market requirement.To start from screw map,we design measure chart,refine process chart,and schedule our measuring.Based on our engineering knowlesge,we made a causal analysis and select main causes.Product Type472477 cylinde481372472472472FC472WF★TotalcylindemanifoldmanifoldMani uppermanifold lowermanifoldmanifoldVolume19940348115591030004735060500127406260240511(unit)Casting defect1061142091128928852291098(unit)Cast defect rate%%%%%%%%%Machining defect (unit)70341273626113Machining defect rate%%%%%%%%%Dimension defect436187329151232150878533838Dimension defect rate%%%%%%%%%Apperance defect1571722471939869354421782Apperance defect rate%%%%%%%%%★Amount defect (unit)70647381946194625251861306831★Each product defect rate (Amount)%%%%%%%%%Monthly defect rate%(Amount)Chart 6: Quality data for DelaminationFor each product,we measure its defects distribution situation for further find that product 472 Mani upper, 472 Manilower and 472 Cylinde occupied highest rank of defects.For defects cause, ＂Dimension defect＂ rank first,followed by ＂Apperance＂ and＂casting＂.Figure 7: Pareto chart of various Defect CauseHere “Dimension” and “Apperance” are main Cause,which amount to occupy over 80%(near 82%) of total defects,weighing % and % respectively.Reject or rework statistic:Name472 cylinder477 cylinder481372472472472FC472WFTotalmanifoldmanifoldManifold upperManifold lower manifoldmanifoldQuantity（unit）%%%%%%%%%Chart 8 Defects of various Product TypeFigure 9: Pareto chart of various Product Type472 manifold lower,472 manifold upper,472 cylinder and 472 WF manifold rank top on weight,with %,% ,% and % respectively.We decide to focus on main defects that occupied large ratio of total(90%) and greatly
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