Attn Chris Baugher Re: Best source for inexpensive ballscrews?

Hi Chris,

I dont suppose you have a part number for the ballscrew and ball nuts
do you?

Thanks

Will

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Chris Baugher
<cbaugher_yahoo@b...> wrote:

> On Fri, 1 Aug 2003, Bill Kichman wrote:
>
> > McMaster-Carr's pricing is even cheaper than Reid Tool...you can

buy "by the

> > inch" and 5/8" diameter is seriously discounted compared to the other
> > diameters....this is looking better all the time....so now if I

buy the

> > square nut only, how is that attached to the mill? I ask, because a
> > standard flange likely won't fit my application anyhow, so I

thought I would

> > investigate other mountings...
>
> I just got some of McMaster's cheap ballscrews and nuts for my

micro-mill

> CNC conversion. The nuts are a little crude, more so than I expected.
> But then they're only $22 each...
>
> Anyway I made my own simple preloaded nut. Take a block of aluminum or
> whatever and bore a 15/16" hole through it, the same size as the outer
> diameter of the threads on the ball nut. Now make a slit through

one side

> of the block all the way through to the hole in the same plane as the
> centerline of the hole. Then drill and tap 2 holes perpendicular to

that

> slit so that now you have a sort of clamp. One nut goes in each side of
> the hole so that the nuts are facing each other. When the screws are
> tightened the nuts are then clamped in and won't move. When you

assemble

> this together with the ballscrew you can loosen one nut and turn it very
> slightly to remove the backlash, then tighten it again.
> Now you can drill other holes in the block to mount it to whatever you
> want. Instant anti-backlash nut.
>
> I can take some pictures of it tomorrow. That should get the idea

across

> much better.
>
> C|