kanbanschedulingsystems(doc)-經(jīng)營管理-在線瀏覽
2024-10-19 15:10本頁面
【正文】 Computer simulation ? Trial amp。s regional warehouse which details which items have sold. The warehouse prepares a (usually) daily replenishment delivery of the exact items sold. In large, modern supermarkets Kanban signals e from checkout scanners. They travel electronically (usually once each day) to the warehouse. Some stores still use a visual system. Here, a clerk walks the aisles daily. From empty spaces he deduces what sold. The clerk then orders replacements. This signal might go by telephone, FAX or courier. Often it travels on the returning delivery truck. Another variation is the bread truck. Here drivers follow a fixed route from store to store. They have a supply of bakery items in their truck. At each stop, they examine the stock and replenish what has been sold. Page 2 MQIP Management Consultants Co. LTD Your Professional Quality Improvement Partner . Tel: 02033689262, 38761191 A Manufacturing Example Kanban scheduling in manufacturing works in the same way. The essential elements of a system are: ? Stockpoint(s) ? Withdrawal Signal ? Immediate Feedback ? Frequent Replenishment In the manufacturing kanban system shown below, a machine shop supplies ponent parts to final assembly. Assembly is a manual operation with little setup. Assembly produces in lot sizes of one according to customer requirements. Machining is more automated than assembly and has significant setup costs. Machining must produce in batches to amortize the setup and sequence parts to minimize tool changes. A small quantity of every part is maintained at the machine shop. By observing the remaining quantities, the machinists know what products need to be made next. Kanban and Other Methods Production Control coordinates multistep processes, often with multiple products. Kanban is just one of several ways to achieve this coordination. Physical Linking is another way to coordinate. Here, each part in the process moves in synchronization and each step starts simultaneously. Processes must have the same lot size and colocation. Page 3 MQIP Management Consultants Co. LTD Your Professional Quality Improvement Partner . Tel: 02033689262, 38761191 In Broadcast, a final assembly operation builds directly to schedule. The schedule is simultaneously Broadcast to upstream subassembly and supply operations. They build the needed parts in LineSet Order with a small time offset for delivery. This system does not require colocation. It does require identical lot sizes (usually one) for all processes. Kanban scheduling systems are useful when lot sizes differ between process steps, processes are unbalanced or when distance introduces time lag or variability. These systems slightly decouple the processes. Materials Requirements Planning (MRP) works from Bills Of Material (BOM), routings, inventory records and forecasts. It plans each process step f
環(huán)評公示相關(guān)推薦
鄂ICP備17016276號-1