Re: [CAD_CAM_EDM_DRO]doodling with ideas

Jon,

I've been thinking along those same lines. But, instead of removing
the main drive belt and attaching the stepper's belt, how about an
electric clutched timimg belt pulley so both belts are always
engaged. When you wanted the stepper action shut off the main
spindle motor, activate the clutch and let the stepper do what ever
spindle rotations are needed. Then everything could happen under the
CNC's program control. Or maybe both belts could be always engaged
without the clutch. Then the stepper would be constantly rotated by
the spindle, wonder if that would be a problem having a stepper
constantly rotating (with it's driver turned off, of course).

Doug

In CAD_CAM_EDM_DRO@egroups.com, Jon Anderson <janders@n...> wrote:

> Bill,
>
> Live tooling changes a lot. When you said lathe, I got hung up on
> turning. For a belt driven hobby lathe, I'd think it wouldn't be too
> difficult to put a timing pulley on the spindle somewhere for a

stepper

> drive. Loosen the regular belt, add the timing belt to the stepper,

and

> you have in effect a hybrid horizontal mill with rotary axis.
>
> Jon