Re: [CAD_CAM_EDM_DRO] Re: dual motors

Tom Caudle wrote:

> --- In CAD_CAM_EDM_DRO@egroups.com, "Don Chandler" <chandler@n...>
> wrote:
> > <I want to use twin motors to drive my gantry at both ends and I
> have
> > <nightmares about how open loop control could put my machine in yoga
>
> > <positions.

This is called a 'tandem' axis in the trade. I'd never run across it
until I got my first
CNC control, and was having all sorts of strange things going on on one
axis. That
one was set up as tandem.

What you want is to have a flexible arrangement, so that if the two
slides get a little
out of synch, it won't bend or bind anything. Then, you have home
switches on each
slide, so they can be synced precisely.

Jon