Prioritizing parts from cutting bills when gang-ripping first
R. Edward Thomas · Forest Products Journal · 1996
Computer optimization of gang-rip-first processing is a difficult problem when working with specific cutting bills. Interactions among board grade and size, arbor setup, and part sizes and quantities greatly complicate the decision making process. Cutting the wrong parts at any moment will mean that more board footage will be required to meet the bill. Using the ROugh MIll RIP First Simulator (ROMI-RIP), different part prioritizing methods were examined. The best method of prioritizing part sizes appears to be both cutting bill and lumber grade dependent. Dynamic prioritization strategies, in which the emphasis placed on different part sizes shifts during optimization, are more efficient than more simplistic prioritization strategies for almost all cutting bills.