Re: Re: Re: Shoptask Z-axis - quadralift?

On 6 Mar, CAD_CAM_EDM_DRO@yahoogroups.com wrote:

> From: ccq@...
> Hi guys;
>
> Maybe someones tried this before, and can tell us if it'd work. It might
> require a wider than usual gear/rack, but what if you took a slitting saw, and
> slit the rack right down the middle.

The "rack" on the Shoptask, and every other mill/drill that I've
ever seen, is simply teeth cut into the quill. There's nothing to slit.

The "common" Shoptask solution for people who want very repeatable Z
axis positioning, is an external ball screw drive, with a stepper or
servo driving the screw.

Alan

--

Alan Rothenbush | The Spartans do not ask the number of the
Academic Computing Services | enemy, only where they are.
Simon Fraser University |
Burnaby, B.C., Canada | Agix of Sparta