Helping to get this thread back on what little broken down track it's ever had, here's some photos of the "Uhmmm" problem I had added to my plate at work this past week...
Photo #3 shows the old manual vertical lathe we had. (Was #1, but some piece of software didn't like that). If you look closely, you can see where a previous owner/owners had customized the machine to increase the size of the part's that it could swing. (The area just above the top of the chuck jaws on the main vertical column, under the cross slide bridge.)
I have a really good idea just how they did it, and I know they used the old girl to do it to herself. They took a machine that could swing a part 80" in diameter and raised it to 97"+. That's why my employer bought it back in the early 1970's.
Where
The problem isn't with the machine not doing what it was designed to do, its with what we need today. On the old Bullard, to cut taper's like what the industry uses for a really large portion of the market, the old girl needed a set of change gears to let it produce that motion. Each set of gears could cost several grand in cash plus the lead time to get them made.....
It just got to the point where it wasn't cost effective to use it any more....
So, a little over a year after the call was made to start looking for a CNC replacement, the Toshiba landed....
The largest CNC lathe we had before the Toshiba landed is a 1950's era Giddings and Lewis that was retro'ed by a California company back in the 1980's.
They managed to burn a whole lot of bridges long before they went belly up ~3 year's ago; it seems just mentioning the name on the machine can make it unsellable....
Needless to say, when you need a back up/replacement for a machine that has issues, as well as one that just needs to find a home where what it was designed to be and do is a good home, you start thinking long term.
And that's where the TUE200 comes in... We've only had it on line for several months. The machine itself came with a better than factory warranty as the first owner had the factory rebuild it after the crash, with the max extended warranty as as well.
The TUE200 can swing a larger prop over just the chuck than the older problem child CNC vertical can swing period. It can just beat the old hacked up Bullard by having been designed from the factory to swing a bit over 102", all with the versatility of CNC control.
Where the new problem stem's from is the fact that we're having to tool this beast up from scratch. Machines like this aren't usually designed with our type of work in mind...
Try this on for example; as propeller that has a blade diameter of ~80",but the customer has spec't out a 6" hub bore with a hub OD of a bit over 12" at the business end. The length of the hub can be as short as 18" in this case.
Basically, the tooling from the old CNC (let alone anything from the old manual lathe) just doesn't work on the new one. (Try changing a tire on a semi using just your jack and lug wrench from your compact car).
There's certain stuff we can use, but it's going to take some time to get there....
