DBR (Drum-Buffer-Rope)

Drum-Buffer-Rope (DBR) is a project management and manufacturing scheduling method that aims to optimize workflows and prevent bottlenecks. The "Drum" is the pace at which the system produces, set by the most constrained part. The "Buffer" is a protective stockpile before this bottleneck to prevent delays. The "Rope" is the communication link that signals upstream processes to produce only what is needed, based on the drum’s pace. Together, DBR aligns production steps, reduces excess work-in-progress, and ensures steady throughput, leading to more efficient operations and timely delivery.