Re: ball screw preferences

Hi Mark. I am building a CNC router using some parts I scrounged
from a friend. The x-axis ball screw assembly I am using has a
double nut arrangement similar to the one you described. This
arrangement is designed to eliminate backlash but at the expense of
full travel. My question is can I take of one of the nuts
without "screwing" things up? I need the extra travel. WJS


--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Mark Vaughan" <mark@...>
wrote:

>
> Curious you picking two ball screws.
>
> I've just stripped the ball screw on my big mill. Those I have

stripped in

> the past were always one track with a bit of pipe to return the

balls from

> one end to the other.
>
> Now I have it apart, my machine uses two ball nuts, each runs the

balls in

> one turn with a junction to drop the balls one turn. They do this

five times

> in each ball nut. But the ball nuts come together with a taper face

and a

> sprung steel ring with tapered faces between on a clamp, tightened

to zero

> the back lash.
>
>
>