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Unique use of a Vertical Mill

I've said it a dozen times and I'll say it again....AHHHhh ,,the things you can do with a Bridgeport!!! :D
 
CDI,
Eight inches shorter and he could have set it horizontally, and bored it with the right angle head in one setup.
Kap
 
CDI,
Eight inches shorter and he could have set it horizontally, and bored it with the right angle head in one setup.
Kap
Actually, the holes were only 36" apart, he could have done that anyway on the X-axis. Don't forget, you don't need nearly the full 36" of travel there. The 90* head is going to offset the spindle a couple inches, and the boring head with boring bar is going to add another 5 or 6. Spin the horizontal head around to get the other side, and you gain that 8 or so inches on the other side. So you really only need about 20" of travel.

Still and all, that was a pretty ingenius way to get the job done. Perhaps he did not have access to a horizontal head, who knows? The sign of a real toolmaker is when you can find a way to make due with what you have.
 
Or, he could have set it up on the lathe kinda like this, if he had a lathe.

Mount a couple of supports on the carriage wings to hold the thing.

DSCN0364.jpg


Seriously, that Bridgeport setup is great. Just tram the top side in, indicate it true, and bore the bottom. Re-set and do the other end.

Well, you really have to spot both ends before having a go at it.

Kap
 
Ok, so he poked a couple of bores in that big part.

Was there a spec on alignment and concentricity?
Was it inspected to see how good it met the spec?
 








 
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