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So I have lots of options for cutting threads, beside the obvious, single point them in a CNC lathe.
#Feature cam threadmill acme manual
I also have a Vetcoa thread milling table that enables me to threadmill even on a manual Jig Bore. Your question is a pretty interesting one, as I thread grind threads, and threadmill them on a Pratt and Whitney threadmill. This same theory could certainly be applied to a thread mill. Now they do this unlike thread grinders, that the wheel is angled to match the thread, but by dressing the wheel unequally on both sides to give the right profile. I find it interesting that the new CNC cylindrical grinders made by Studer claim to be able to THREAD GRIND. IT does have to be a relatively small diameter mill though.
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And you could use a thread mill that DOESN'T have to compensate for rubbing on the threads. So there is one example of thread milling small threads. Frankly you CAN do this with a VersaMil with a Universal head, mounted on a manual lathe.
![feature cam threadmill acme feature cam threadmill acme](https://i.ytimg.com/vi/D_ZeKbwH9PE/mqdefault.jpg)
Your NUT would have to rotate and move at the right pitch. You want a possibility to accurately thread mill small acme threads? The trick is to get the cutter angled at the helix angle of the thread, which is different for every diameter of every acme thread. Most people would probably cut their acme threads in a lathe rather than try and thread mill them. Considering hardly anyone uses acme machine threads in production machines, what's the point in a tool and cutter shop making them.