Re: [CAD_CAM_EDM_DRO] Is this too nuts to consider ?

> beer@... wrote:
>
> > I want/need to cut a MUCH coarser thread than my lathe is capable of.
> > Ruminating upon possible solutions to the problem
> >
> > ( when I as younger, I used to THINK about problems, but now ... )
> >
> > it occurs to me that if I attached a stepper or servo to the lathe
> > SPINDLE ( somehow ) and suitably configured the "steps per inch"
> > parameter based upon the diameter of the material, I could cut threads
> > via CNC !
>
> I once needed to cut an extremely coarse thread. I arranged the gears
> on the bracket that allows for special gear ratios. But, the fast rotation
> of the leadscrew seemed like it would overload the gear train. So, I
> powered the lathe from the leadscrew! This was actually a spiral
> on a plate, using the power cross feed. So, I powered the lathe manually
> from the cross feed handle, which moved the tool directly, and also
> fed power to the spindle through the gear reduction of the leadscrew
> and threading gears. It worked fine, too!
>
> You could do the same, powering the leadscrew and allowing the gears
> to drive the spindle. Take small cuts, of course, to reduce the load
> on the gearing.
>
> Jon
>
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