OEE(设备综合效率)介绍

1、OEE: Overall Equipment Efficiency.IntroductionOEE DefinitionOEE measurementOEE case studyOEE analysis and improvementNew investment requestsContents.OEE measurement and improvement must be implemented:For heavy and expensive means that are a bottleneck comparing to the customer demand in order to de

2、liver, then, in order to provide datas to request a new investment.IntroductionOEE DefinitionOEE measurementOEE case studyOEE analysis and improvementNew investment requestsContents.OEE rate Calculation (%)Added value Operating time = Nb of good parts produced x Standard Cycle TimeNominal opening ti

3、me = Days of the week when the factory is open on a regular basis (ie including management, support functions,.)OEE =Added value Operating timeNominal opening timeStandard Cycle Time = The best ever observed respecting quality criteria.IntroductionOEE DefinitionOEE MeasurementOEE case studyOEE analy

4、sis and improvementNew investment requestsContents.OEE : Category of losses1 Planned stops (meals, breaks, training, meeting, planned maintenance, tests)2 Machine breakdowns and no planned maintenance6 Micro-stoppage and Slow down (what is left over after deducting the 6 other causes of losses) 5 No

5、 Quality (Parts manufactured but not good and rework)No OEE losses4 Organizational stops (Lack of tool, material, worker, punctual lack of load) 3 Change over timeTotal Available Time365 days x 24 hoursValue added operating time *Factory not opened on a regular basisOEE (%)100 (%)Nominal opening tim

6、e7 Equipment not open but factory open* Nb of good parts produced x Standard cycle time).What are Cycle time and Change over time?PRODUCT A1st PRODUCT BQuality not yet OKPRODUCT BQuality OKCycle Time (CT) = Time spent between I load part A until I load next part ACTCTChange Over time (C/O) = time be

7、tween last good part “A and first good part “BC/O timeUnloadingLoadingPRODUCT ATransformationCTUnloadingLoadingTransformation.How to track losses? “Production tracking formStandard form to be used: ATDPRO_APS_production tracking form_FC_*.xls.IntroductionOEE DefinitionMeasurementOEE case studyOEE an

8、alysis and improvementNew investment requestsContents.OEE case studyThursday AM:.Machine data recorded during one week:Part TypeABCGood parts753Rejects110Cycle Time5h2h1hNo OEE ReasonsNo instruction to work :8 hChange over1 h per C/O, 5 C/O per weekMaintenance for breakdown 3 hLack of worker1 worker

9、 during one shiftMachine breakdowns2 hMissing parts 1 hBreak30 min per shift.OEEAvailable Time : OEE calculation for one week :7535 h2 h1 h35 h10 h3 h48 h120 h= 5 x 24 h 40Openning Time?.OEE analysis :1 Planned stops (meals, breaks, training, meeting, planned maintenance, tests)2 Machine breakdowns

10、and non planned maintenance6 Micro-stoppage and Slow down (what is left over after deducting the 5 other causes of losses) 5 No Quality (Parts manufactured but not good and rework)4 Organizational stops (Lack of material, tool, operator, punctual lack of load) 3 Change over time 7 Time during which

11、the equipment isnt open and thus not supposed to work/Recorded by using: “Production tracking formCalculated/小的停机或速度减缓Recorded at mana-gement level1,5 h / day x 5 days方案停机时间1 h breakdown + 3h repair 非方案停机时间5 x 1h产品转换时间4 h + 1h管理缺失停机时间 1 A, 1 B and 0 C1 x 5 + 1 x 2 + 0 x 1质量不合格时间No work on third shif

12、t = 5 x 8h方案停产时间.No-OEE analysis :6 Micro-stoppage and Slow down (what is left over after deducting the 6 other causes of losses) =40 h=7,5 h=4 h=5 h=5 h=7 h68,5 h120 h 48 h 68,5 h3,5 h1 Planned stops (meals, breaks, training, meeting, planned maintenance, tests)2 Machine breakdowns and non planned

13、maintenance5 No Quality (Parts manufactured but not good and rework)4 Organizational stops (Lack of material, tool, operator, punctual lack of load) 3 Change over time 7 Time during which the equipment isnt open and thus not supposed to work1,5 h / day x 5 days1 h breakdown + 3h repair 5 x 1h4 h + 1

14、h 1 A, 1 B and 0 C1 x 5 + 1 x 2 + 0 x 1No work on third shift = 5 x 8h=.No-OEE Pareto34%6%6%4%4%3%3%Open time not usedNo-OEE = 60%Planned stopsNo qualityChange overOrganiza-tionnal stopsBreak downMicroStoppage.IntroductionOEE DefinitionOEE measurementOEE case studyOEE analysis and improvementNew inv

15、estment requestsContents.How to improve OEE ?Decrease no quality?Decrease break down?Decrease organisational stops?Decrease change over time?/.How to improve OEE ?No way ! It is by increasing customer demand So : increase equipment available time.Step 1 : Decrease CT, by decreasing loading and unloa

16、dingTransformationCTUnloadingLoadingTransformationCTUnloadingLoading.Step 2 : OEE compared to potential100 %(basis = Factory nominal opening time) OEE (%)Losses .Step 3 : No-OEE = Pareto 1%Total = No-OEE (%).Step 4 : Select the main causes and make a new Pareto if it is worth%.Step 5 : Decrease No-O

17、EE2 types :Changer OverOthers no-OEE .Step 5 : Decrease No-OEE Change OverX %Change over timeProduction time / dayAvailable time to Change Over is a DECISION.SMED action is needed to reach the time decidedNothing needed to doStep 5 : Decrease No-OEE Change OverIf daily C/O time Decision.Organization

18、They are unacceptableStep 5 : Decrease No-OEE Others no-OEESet up simple actions considering analysis and follow results by monitoringWhen main loss cause is Organizational Stops.Step 5 : Decrease No-OEE Others no-OEESet up simple actions considering analysis and follow results by monitoringWhen main loss cause is No QualityNo QualityMRPG action is needed.BreakdownTPM action is neededStep 5 : Decrease No-OEE Others no-OEESet up simple actions considering analysis and follow resu