Disaggregating Work Center Confirmation Logs to Identify Governing Shop-Floor Bottlenecks
Disaggregating confirmation logs separates true machine constraints from reporting lags, scrap losses, and administrative batching to target capital expansion.
Rework Routing Cycles
Meaning
Sending defective parts through a secondary sequence of repair operations rather than progressing them along the standard production path represents a necessary but costly corrective process. These rework routing cycles divert materials from the main flow to address quality failures. They increase the complexity of shop floor tracking and make schedule adherence difficult.
Knowing how often parts enter these loops is essential for accurate capacity planning.
Feedback Loop
Creating a separate path for defective items introduces highly unpredictable arrival rates at the repair workstations. Within rework routing cycles, parts are inspected, repaired, and often reinspected, sometimes repeating the same steps multiple times. This looping behavior causes highly variable cycle times that are difficult to model.
It also delays the final assembly of products that depend on those parts.
Capacity Penalty
Consuming machine time to fix mistakes directly reduces the capacity available for producing new units. The execution of rework routing cycles means that a factory is paying twice for the same output. This waste reduces overall throughput and increases the cost of goods sold.
Factories with high rework rates often find themselves unable to meet demand even with empty order books.
Process Control
Eliminating the need for secondary loops requires a focus on first-pass yield and root-cause analysis. Resolving the process error is the only permanent solution.