制造管理診斷手法與實例(文件)
【正文】 18:5019:185/12/2023 7:18:50 PMn 1成功就是日復(fù)一日那一點點小小努力的積累。 五月 217:18 下午 五月 2119:18May 12, 2023n 1行動出成果，工作出財富。 19:18:5019:18:5019:18Wednesday, May 12, 2023n 1乍見翻疑夢，相悲各問年。44筆記型電腦供應(yīng)鏈管理研究小組C3: IS vs TOBE (1)Maximization45筆記型電腦供應(yīng)鏈管理研究小組C3: IS vs TOBE (2)Minimization46筆記型電腦供應(yīng)鏈管理研究小組Conclusionsn Indepth reviewed 3 major plants. Co. 51% Taiwan production in 1999.n For PCBA line: Established 58 PIs, 8 key PIsn New indices: ORT ratios, Layout efficiency, Flow efficiency, Normalized Line Balance raten Located relative strength and weakness for plant improvement oppor.n Major re: reduce mfg segments, continuous Ushape line, reduce nonbottle buffer, Improve LBR, Use automationn Used Simulation to verify and debug reengineered processes. Some plants could gain 70% in WIP cycle time reduction. Significant improvements can be expected. Simulation is useful for reengineering. 41 47筆記型電腦供應(yīng)鏈管理研究小組n 靜夜四無鄰，荒居舊業(yè)貧。People8Labor 44 42 42 ↓2 peopleORTBottleneckLineLineScreen43筆記型電腦供應(yīng)鏈管理研究小組C3 Improvement effects (3/3)BottleneckLineEfficiency %% % ↑127 %Balance%↑23 %LayoutLengthCycle1↓%42筆記型電腦供應(yīng)鏈管理研究小組C3 Improvement effects (2/3)AvgProductionsameArearate inspectionVibrationLayoutSimulationAfterStations X X2 X ↓%NumberStationCycleSideLineLine%Efficiency % % % ↑282%LineTime%EfficiencyPCBAday ↑16%AreaPlacementLayoutSimulationDiscardingProductionBenefit RET18筆記型電腦供應(yīng)鏈管理研究小組Key PI: Line Balance raten LBR (%):n Original： (? ti )/tmNn Normalized： ( ? ti )1/N /tm n ti： Time for the ith processn tm： Max(ti) i=1,…,Nn N： Total number of processesn Original method penalize on longer/more sophiticate lines. = Rem. Normalized method.n Index desc.RET19筆記型電腦供應(yīng)鏈管理研究小組Layout Efficiencyn Layout Efficiency_Time= Theoretical total process time/(theoretical total transport time + Theoretical total process time)n Index Desc.n Layout Efficiency_length= Theoretical total process length/(theoretical total transport length + Theoretical total process length )n Index Desc. RET20筆記型電腦供應(yīng)鏈管理研究小組Flow Efficiencyn Flow Eff.= theoretical cycle time/Actual cysle timen Index Desc.n Theoretical cycle time = total theoretical process time＋ total theoretical transportn Actual cycle time Actual process time + 實際製程時間 +actual transport time + actual idle time RET21筆記型電腦供應(yīng)鏈管理研究小組Revised Indices: MTBFUn MTBFu (Mean Time Between Failure UpTime based) = uptime/ failure during the periodn Most use: all time/ failure or prod. Time/ failure n Avoid overestimating MTBF when down time is long. (down 1 time for 6 months in a year.MTBFu = 6/1。capabilityNeedtestingrepairn NeedHigh:nonvalueaddn inputsidentifyImpr
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