Re: all-thread question

This is the easiest way I know of too.

The neat thing is you can use an oversize bearing that would be sized
for your ballscrews or ACME later on. The idea is to get the rod
close to the center for any diameter you might use, now or later.

I am testing with 1/2-13 but will go to 10TPI ACME in the next
iteration.

I used a pillow block bearing, a pair of thrust bearings and two sets
of nuts to allow me to lock the rod in the bearing. I used a 3/4 in
bearing with a spacer like Smoke described.

On the end that extended out about an inch, I put a piece of steel
with 1/2-13 thread, and a 1 inch OD. then a 3 inch-60 tooth XL gear.
Simple and works great.

Dave

--- In CAD_CAM_EDM_DRO@y..., "Smoke" <smoke@t...> wrote:
> The EASIEST way I could think of for a hobbyist would be to make an
adapter
> from a piece of stock larger in diameter than the ACME screw. Bore
a slip
> fit hole in one end for the screw and turn the other end to fit in
a bushing
> or bearing. Slide the part over the screw and drill thru both
parts for a
> tight fitting pin. The turned end can be long enough to mount a
drive
> pulley or used for direct connection of the drive motor or an
encoder.
>
> Smoke
>
> > I have ordered parts for my router table. My question is, if I
have acme
> > threaded rod with threads all the way to the end, how do I attach
the
> > bearing and motor to the ends? I don't have milling cpabilities
at home.
> I
> > looked in the McMaster-Carr catalogue and they shop bearings but
nothing
> > about the ends of the acme rod. Can I insert the threaded ends
into a
> > bushing of some kind and not have it eat up the bushing?
> >
> > Russ N4FT