Re: CNC driving of lathe leadscrew

David Margravewrote:

> Is it possible to drive a lathe leadscrew using CNC, rather than via
> the change gears? I know that this would also require a way to get
> the spindle RPMS. But it seems like this would give you far more
> flexibility of standard/metric thread pitches, as well as simply

finer

> control of feed rates for general turning, than is possible with
> change gears.
>
> Dave

Mark Wrathall wrote:
There is a really cheap kit out which does just that called Frog CNC
http://www.emachineshop.com/frog/

TurboCNC also supports an encoder on the spindle to time the driven
leadscrew for threadcutting.
Mark