Re: [CAD_CAM_EDM_DRO] Re: Assembly of ballnut on screw & Screw quality.

Ok. First I have to admit that I've never played with a ballscrew
directly but not having direct experience before has never stopped
me from blurting something out before so here goes.

If the bearing diameter is only slightly less than the tube od then
you should be able to push the tube out of the nut with the bearing
journal as you slide the nut onto the screw. At some point the bearing
journal starts performing the same purpose as the tube, the journal
will keep the balls from falling out.

Drew

Chris Stratton wrote:

>
> > This could be a problem then. After I turn a bearing diameter I
> > won't be able to reach the threads. This will only be a problem on
> > the X axis screw for my application. Any assembly procedure for
> > adding the balls back into the nut once on the screw?
>
> If your bearing diameter is only a little smaller than the minor
> diameter of the thread, then you may need to make up a thinner wall
> tube that can slip over it and allow you to transfer the balls
> directly to the threaded portion.
>
> If the bearing diameter is really close to the minor diameter, you
> could proabaly position the nut at the end of the thread and feed
> balls in one at a time though the exposed thread groove. Spread an
> old blanket on the floor and sit in the middle of it, so that if you
> drop one it can neither roll far nor bounce.
>
> Chris
>

--
Drew Rogge
drew@...