Re: [CAD_CAM_EDM_DRO] Making your own Ball nuts

Mark Taft wrote:

>Hi everyone,
>
>Has anyone tried to making their own ball nuts,
>
>see link bellow.
>
>http://www.homecnc.info/cnc-main.html
>
>Perhaps they can share the experience.
>
>

Read more closely, and look at the pictures. He isn't making ball nuts, he
is assembling 2 Thompson single-row ball nuts on one screw, with a
preloading device, to eliminate backlash. By the way, those black screws
are power transmission screws, not precision screws for positioning systems.
Accuracy is +/- ???. They really don't spec them, which means they can
vary all over the place, even on the same screw. So, preloading schemes
may not work real well on such a screw.

Jon