Drum Buffer Rope(DBR) is a tool of production scheduling(planing) that concentrate on maximizing flow of value (total efficiency) rather than local efficiency. Instead of dividing the plant into departments and then scheduling every operatins in these departments, DBR divides the company into several goods or service streams and then schedules only the bottlenecks(drum or CCR), in each of these streams. The factory try to adjust behavior same “road runner work ethic or speedy gonzales behavior" whe they do the schedules – when they have work, they work as quickly as they can, when they don’t have work left on their schedule to complete, they stop.
Overall, DBR or SDBR not only simplifies scheduling of the plant, it also simplifies the measurement of the plant.
Every “drum” operations in the company or business is measured on how well they produce to their schedule (“on-time to schedule”). Every “non-drum” work centre up-stream of the drum is measured on how well they get product to the “drum” on-time (“on-time to buffer”). Every “non-drum” operation down-stream of the “drum” is measured on how well they get product to finished goods on-time (“on-time to finished goods”).
In a DBR space , traditional measures like line or operation efficiencies and cost for each unit (local measurs) are eliminated because they actually make delay for flow and increase overall cost in the plant.
In addition DBR is a point for using both pull and push systems togather, and it is important for plant monitoring because you plan the plant based on bottelneck.
