RE: [CAD_CAM_EDM_DRO] Re: Synchronizing two motors on the same axis

I thought about that, but in this case it is possible for one of the motors
to be moved when powered off without the other being moved a corresponding
amount. This could happen when changing needles or bobbins on the sewing
machine.

John Guenther

> -----Original Message-----
> From: ron_routledge [mailto:ron_routledge@...]
> Sent: Monday, May 13, 2002 12:17 PM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: [CAD_CAM_EDM_DRO] Re: Synchronizing two motors on the same axis
>
>
> Hi John
>
> I simply have a Y cable between my PC interface and two motor drivers
> for the x axis on my plasma table. As long as you are not losing
> steps it works just fine.
>
> Ron
>
> --- In CAD_CAM_EDM_DRO@y..., "j.guenther" <j.guenther@v...> wrote:
> > Here is my question for the day, what would be the best way to sync
> up two
> > motors on the same axis. It can be considered that full cycle for
> each part
> > of the axis equates to 1 revolution of each motor. The application
> would be
> > for a long reach sewing machine for quilting. I am thinking of
> driving the
> > needle mechanism with one motor and the bobbin mechanism from
> another motor.
> > If that is the route I take, these two drives must remain in
> perfect sync
> > with each other. I am assuming that either steppers with encoders
> or servos
> > can be used to accomplish this task, I am just not sure how to sync
> them up.
> > Can they both be driven from a single axis (Z) or do I need to use
> two axis
> > (Z, A) and slave one to the other? What software would be best to
> > accomplish this task?
> >
> > Thanks
> >
> > John Guenther
> > 'Ye Olde Pen Maker'
> > Sterling, Virginia
>
>
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