約束理論---toc-在線瀏覽
2025-02-26 16:43本頁面
【正文】 708090100% of Work Avail in Buffer1 2 3 4Time to Stock Out3210Everything is OK(stop upstream production)Watch plan how you would expediteACT! we are in trouble!“Constraint is about to be starved! Work available!! Stock up Buffer FAST!!”Buffer Management 緩沖器管理Belton Confidential 19DrumBufferRopeThe “rope” is used to gate the release of raw materials to the pace of the constraint or “drum beat” 繩子用來按照瓶頸的節(jié)拍或 “鼓點”來控制原材料的發(fā)放 .A B C DRopeBelton Confidential 20What do Ropes do 繩子有什么用 ?? Provide a linking mechanism for the buffer to the initiating processes (gating operations) for a stream of production 提供一個將緩沖器和起始工序相連的機制保証生產(chǎn)物流? Limit the amount of inventory to manageable level by restricting flow into the system 通過限制物料流進系統(tǒng)來約束存貨達到一個可管理的水平? Synchronize the flow of material to the constraint schedule (drum beat) 使物流與瓶頸進度保持一致 (鼓點 )Belton Confidential 21A B C D ERaw MaterialsFinished GoodsDrumBufferRopeDBR 生產(chǎn)控制Belton Confidential 22DBR Production ProcessOperation 2Operation3Operation4Raw MaterialsOperation 1 Warehouse CustomerConstraint Buffer1. Sales order activates constraintShippingBuffer2. Constraint activates RM replenishment “pulls” stock3. Constraint alerts downstream operationsBelton Confidential 23DBR AppliedBelton Confidential 24A B C D ERaw Materials11 Partsper Day9 Partsper Day5 Partsper Day8 Partsper Day15 Partsper DayFinished GoodsSimple Manufacturing LineBelton Confidential 25Task: Design a process to produce 5 parts per day at the minimum cost 設計一個流程以最小成本來生產(chǎn) 5件 /天產(chǎn)品 .Belton Confidential 26A B C D E5 Partsper Day5 Partsper Day5 Partsper Day5 Partsper Day5 Partsper DayLine Balance + Waste EliminationRaw MaterialsFinished GoodsSolution 1問題 : 生產(chǎn)變異約束了產(chǎn)出Belton Confidential 27Probability all are 5+ is: **** = .03== 3% chance of system producing 5 or more per day50% 50% 50% 50% 50%Probability of 5 + pts/ day5 +/ 1 Pts/dayLine Balance + Waste EliminationRaw MaterialsFinished Goods5 +/ 1 Pts/day5 +/ 1 P
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