Re: [CAD_CAM_EDM_DRO] Synchronizing Two Servo Motors

I've a set [2] of motors on my gantry router right now [running] and it works great
You can sycro them w/ the control software [I use Mach3]. I'm using servo's
so if one or both fault's out then Mach will stop [and there-bye eliminating
any racking]. Homing is a synch w/ slaved homing [works like a charm].

Fwiw

Jarrett Johnson

> Search this topic on the EMC forum. It has been discussed ad
> naseum on that
> site as well as most cnc sites.
>
> Syncing is one thing, homing the two is another.
> Although I've never done it, I would prefer a motor on each rail,
> but with
> them sharing a belt, and a single encoder.
>
> Regards
> Roland
>
>
> 2009/3/10 Mattison <yahoo@...>
>
> > I'm building a gantry router with dual lead screws to drive
> the gantry,
> > and
> > I need a way to make sure they never get far enough out of sync
> to rack the
> > gantry out of shape. I thought about mechanical linkages but I
> want to use
> > two motors for the extra speed and power, and I already have the
> motors.> Does anyone know of a circuit that can take two encoders
> as input, plus the
> > step and direction inputs, and output a fault signal if the two
> encoders> get
> > out of step? There are several ways I could build such a gizmo,
> but figured
> > I'd check first to see if I can avoid reinventing the wheel.
> > --
> > Phil Mattison
> >
> >
> >
>
>
> [Non-text portions of this message have been removed]
>
>
>
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