Re: [CAD_CAM_EDM_DRO] Re: Measuring backlash more accurately?

>I am jus beginning with this project and there is lot of
> >things to go thru. Among other things, one thing will be the tool
> >changer. I do not have a faintest idea, how to do this with Mach1,
> >but that is an other case...
> >
> >
>Probably you can't add a tool changer, as Mach1 is a closed system. I
>think EMC is
>your only hope, as the source is open. I know I could add a tool
>changer to it, although
>it might be difficult. Some people are working on adding a ladder logic
>scheme to
>handle things like that.

If your controller software won't handle all the I/O needed for tool
change, buy a surplus PLC on E-bay and do the ladder logic thing. I used a
Keyence KV PLC that I got with software for $50 used. The KV has relay
outputs that can drive the hydraulic solenoids directly.(with adequate
snubbing)

Before I had the PLC working, I built some real relay logic to operate the
spindle direction and gear change stuff. Since it worked so well, I doubt
I'll change the spindle functions over to the PLC. I'd be glad to send you
a copy of my wiring if you want. Do you have a Fanuc spindle drive on your
10VC?

-Bob