Re: [CAD_CAM_EDM_DRO] Re: Re: replacing feed screw with a hydraulic cylinder

Ray Henry wrote:

>The last thing to think about is the tool changer and related spindle
>orientation stuff. The Moog tool changer can be run from a spare parport
>and it should be possible to write an IO driver module for the EMC that
>would handle this setup.
>

With the PPMC card set, you could add a second DIO card, and have an
additional 17 opto-isolated
inputs and 8 SSR outputs for the tool changer.

> Open loop spindle drive is already in there.
>Spindle orientation is done by a lever that hits a flat on the spindle
>shaft. Tool clamp and unclamp are by the little Baldor motor on top.
>Turn it one way and it screws the threaded rod into the tool holders, the
>other way threads it out of the holder. I'd write it in Tcl/Tk right
>now but a program called ClassicLadder is close to being integrated so
>that you could treat this whole PLC thing like a real PLC only free and
>running under Linux with no proprietary communication protocols or
>programs in the way.
>
>

Ahh, that sounds real interesting. I'd like to see if I can interface
my DIO board to classic ladder!

Jon