Re: [CAD_CAM_EDM_DRO] laser transit

Doug Harrison wrote:

> > > It's a router table.
> >
> > OK, well, sounds like it may be similar in construction to a bed mill,
> > one design of which has a gantry that travels on two widely separated
> > tracks.
> >
> > How are you going to keep the two sides of the gantry in sync?
> >
> > Jon
>
> The gantry (X axis) will have a ballscrew on each side driven by separate
> motors. With ten foot ballscrews I have to use rotating nuts to avoid
> critical frequencies.
>
> The motors will be driven with G340's. These can be driven from one
> step/dir signal or with the W-follows-X feature in CNCPro. Depends on the
> degree of pitch variation between screws. The interface card (wonderboard
> rev.8) will shut all amps off if one goes into fault.

The only problem here is how to get them synced up after power on.
Once they are in sync, they should stay there.

Jon