Andy Pugh wrote: > On 17 November 2010 15:30, Jon Elson <el...@pico-systems.com> wrote: > > >>Either way (Acme leadscrew or feed driveshaft), it would have too much >>backlash for my liking. > > > I have a feeling that backlash is much less of an issue with a lathe > then with a mill, as the cutting forces practically never reverse > during a cut. Trusting to the power feed shaft and apron gearbox for > the X drive might be being a little optimistic though. > Backlash on the X axis gets to be a big problem if you try tapered threads or any taper that has a reverse force on the tool. The Z axis usually is not as much of a problem. Ed.
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