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Nesting machine output5/13
if you not have unload system then this number very nice
Thanks , we don't have the automated unload system but we have extended the bed so that we can remove a full finished board by sliding it over manually so that the next board can start while we apply stickers and remove the individual parts
We don't have auto load or unload. Labeling parts as they come off with a sharpie. Average machining time is 5-7 minutes for cabinet box parts. Another 4-6 minutes is typically spent unloading and labeling. I usually figure 12-15 minutes as a ballpark average from loading a fresh sheet to loading a fresh sheet. There's a ton of factors. Lots of shelf holes takes a while, number of tool changes, quantity of dados, number of parts.
30 sheets a day is a pretty easy target to hit. If I'm not interrupted, hustle, and everything goes well I can do 40 sheets in a day. Usually it has to be Saturday though with no one around. lol
This past winter I started doing everything with a return skin to keep the air cleaner in the shop. The return skin doesn't leave much on table for chips, but it does add 2-3 minutes to the run time. But it's nice not blowing as much into the air. When it gets nice enough to have the doors open again, we'll go back to just doing a return skin on the little parts that movement is a concern and save the time.
Thanks Karl , that's helpful. Im thinking of setting a target of 50 boards per shift , that should be just hard enough to keep us constantly looking for ways to improve
when use load unload ,average time between boards its 1 min(we pass second time to be sure table clean ,but if spry air by the sweeper can save some seconds)
When we need to we add a person to the CNC for load/unload.
Let's say a day's pay for that person is 1.5 hours machine time or 90 minutes. At 40 sheets per day you only need to save 2.5 minutes per sheet to make it pay.
And the extra person can do other things as well - trim, edgeband, get material, deal with scrap, they can trade off breaks and lunch (which picks you up an hour per day) etc etc.
What is a return skin?
"What is a return skin?"
I'll leave a .030" skin on every part. Then the cnc comes back and cuts through that freeing the part.
Think of small part handling, except you're treating every part as small.
We've got overkill probably for a dust collector on the cnc, and blowers trying to push chips out of the cut, but that second pass cutting plywood, there it's hardly any thing sitting on the spoilboard. MDF it didn't seem to help as much. Melamine it works well.
That makes sense, the machine came with a blower or did you add that?
Came with it. We've got four nozzles that can be pointed various directions.
Ut helps stir things up so the dust collection can pick it up, but it certainly isn't a magic bullet.
First, Bespoke? You build custom cabinets and anything else that will make a profit, just like the rest of us. Every shop claims to be custom and high end but truth be known will build pallets if the profit is right. It's just that custom and high end sounds better.