Re: Controlling more stepper drivers than I have outputs for?

Hoyt, List,

Do you have an "automatic" switchover between regular spindle motor
and the "C" axis stepper drive? A long time ago I saw this on a
commercially offered lathe, but didn't pay enough attention :-(

I've been trying to find a good way to implement this in a small 5c
spindle CNC gang tooled lathe I'm designing to be sold as plans/kit.

The alternative plan is a gecko servo driving a 1HP spindle; and Art
F's Mach1 has planned support for this to be used as a "c" axis. But
I'd like to offer both techniques... Any good links/ideas/systems out
there?

Thank you in advance,

Ballendo

--- In CAD_CAM_EDM_DRO@y..., batwings@i... wrote:
> At 07:58 AM 4/15/02 -0700, you wrote:
> >spindle encoder for threading. I lose a fair amount of work
because I
> >can't thread efficiently.
>
> As you know I use I-LPT and I can cut any thread on earth, straight,
> tapered inside or out, multipass. The trick is to have aux stepper
drive
> for spindle, which lets you make threading a combo of two or three
axis
> moves, w/o the encoder.
>
> Regards, Hoyt
>
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