kanbanschedulingsystems(doc)-經(jīng)營管理-展示頁
2024-08-28 15:10本頁面
【正文】 e best system is the simplest. Where the process allows, Physical Link is the system of choice. Broadcast, Kanban, MRP and ROP follow in desirability. A system designer would examine each process and each product group in turn. He/she attempts to apply physical linkage. If the necessary conditions do not exist and process change is impractical, Physical Linkage is rejected and Broadcast is considered. This process follows down to the least desirable system, ROP. In practice, Kanban scheduling systems are often a good choice. They can be a transition between MRP and ROP approaches and Physical Linkage. Page 4 MQIP Management Consultants Co. LTD Your Professional Quality Improvement Partner . Tel: 02033689262, 38761191 Page 5 MQIP Management Consultants Co. LTD Your Professional Quality Improvement Partner . Tel: 02033689262, 38761191 Designing The Kanban System Preparing for a Kanban scheduling system can be formal with elaborate analyses and simulations. It can also be very informal with finetuning done on the production floor. We suggest the following steps: 1. Analyze ProductVolume For Upstream Work Center 2. Analyze Downstream Order Patterns 3. Identify Kanban Products 4. Identify Appropriate Lot Sizes 5. Identify Containers 6. Identify Signal Mechanism 7. Specify Stockpoint(s) 8. Specify Initial Kanban Quantities 9. Develop Upstream Scheduling Algorithm 10. Operate Fine tune Designing each connection and product using the above methods could be very elaborate and time consuming if followed rigorously. With experience, however, most designers or design teams learn to perform most steps mentally and informally. In our online seminars, we initially stress the formal approach and insist on plete documentation of each step. Once participants understand the process, they can perform the steps informally and very quickly. Daily Operations In the best systems, operators or teams schedule their own work. They have current and accurate information of downstream production needs. The scheduling bucket is rarely larger than a day. In some systems, it may be only minutes. Operators examine returning kanban cards or signals to determine where stock is low or high. Aids such as boards with red, yellow and green zones can assist. Knowing the most favorable sequence for changeovers, the operator first schedules items in the red zones. Products in the yellow and green zones then follow. Operators might also have a list of ining orders. With this, they identify any unusually large order(s) that will overwhelm the stock. How Many Kanban? The number of cards or containers is a key issue. Excess cards and inventory encourage sloppy scheduling and a laissezfaire attitude. Insufficient cards adversely affects customers. Several methodologies can determine an optimum level: ? Boundary Analysis ? Predetermined Formula ? Factor Analysis ?
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