We routinely cut 5 to 6 sheets per hour. Our run times are likely a little longer than most as we have a v-bit that scribes part information on each part instead of using stick on labels. This adds a few minutes per sheet. We are also using a relatively light duty machine. We have 20HP of vacuum and cut at 500ipm. Machine is a Camaster Cobra with 10HP spindle and 10 position tool change. Typical sheet uses 3 or 4 tools.
At 5 to 6 sheets per hour the machine has scribed all parts with part number and edgeband info, drilled pilot holes for screwing boxes together, drilled all shelf and hardware holes, drilled leg leveler holes, and cut parts. This also includes time to load and unload machine, and edgeband while the next sheet is running. Basically we have 5 or 6 sheets worth of parts ready for assembly every hour.
Our off load/load time is about 1 minute per sheet. So the machine sits idle for about 1 minute every sheet. Our guys are really not working very hard to make this happen.
With your 5 to 7 minute minute run time stated above, I would call it 8 minutes average per sheet including loading/unloading. For real world numbers I would simply divide working time by this number. In order to make it happen, you simply need to stress the importance to your guys......when the machine stops, the mission is to get it running again as quickly as possible.
We are 10 to 12 minutes per sheet including load/unload and our guys have no trouble making this happen.
For a very accurate time, go spend an hour with the guys running the machine and watch and time. The main time to watch is the idle time, as once you have your cutting parameters optimized, not much you can do about them. You can however do things to speed load/unload times....make it as efficient as possible.