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

Hello Friends,
There didn't occur an original thread on my inbox what is the real problem.
Today I don't agree with Ballendo pulling a ballscrew apart.
The idea with the tube to keep the balls in their position is good and suitable.
To put back lost balls I would leave the nut on the screw, open the back feed tube where the balls fell out.and put them in there
again. You get space turning back and forth.or pushing with a pin.
Be aware that the channel MUST have open space and may not be filled up with balls. If not the friction between the balls blocks the
nut.
Everything must be completely clean.
Good Luck
Sven Peter


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
>
> --
> Christopher C. Stratton, stratton@...
> Instrument Maker, Horn Player & Engineer
> 22 Adrian Street, Somerville, MA 02143
> http://www.mdc.net/~stratton
> NEW PHONE NUMBER: (617) 628-1062 home, 253-2606 MIT
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