ABSTRACT
In the classic Paired-cell Overlapping Loops of Cards with Authorization (POLCA), each upstream cell would have an individual loop to all its possible downstream cells. The manufacturing facilities include numerically controlled machines for processes such as cutting, grinding, chamfering, engraving, milling, and drilling. From Cutting onward the system would operate on the Release-and-Flow POLCA rules. The next result was that the Cutting operators frequently complained about the lack of free pallets and storage space. The final stages of production involve finishing processes including painting, hardening, screen printing, gluing, or drilling. However, the operators of the grinding machines would complain that the sequences being used in the Cutting department prevented similar types of orders from arriving at their machines, so they would make frequent trips to Cutting to negotiate with its supervisor to get suitable sets of parts that they could run together on their grinding machines.
