Re: Colored pins for EMC map-- reply with city, state, country

[Jon Elson <jmelson-at-artsci.wustl.edu>]

Ray Henry wrote:

> Fred +
>
> Crystal Falls, MI 49920 USA.  I'll put in the zip 'cause you'll need a
> detailed map to find it.  Hint.  It's about 100 miles north and 30 miles
> west of Green Bay, WI. (bring snowshoes)
>
> Along with Paul Corner, I'm responsible for the virtual machine that Ian
> loves to watch.  You may want to use a clear pin for that one. ;-)
>
> I have a Moog hydrapoint with 24 tool holder that I'm getting close to
> setting up. I believe that I can integrate the tool changer and all of the
> necessary extra I/O with the new iosh and tcl.
>
> I also have 3 Hardinge chnc chuckers with AB 7360 controls that need emc as
> soon as we get real spindle feedback.

Wow!  I started my retrofit with an Allen-Bradley 7320 (slightly more general
model of the 7360).  It has a 100 Hz servo update rate.  I suspect you get
a LOT of following error whenever it is moving fast.  Using the FF1 parameter
with EMC, I've been able to get following error down to nil even at high
speeds.  I also want to do my lathe as soon as we figure out how to do
the spindle feedback.  I thought the code to do this WAS in EMC, but
I've never proved it.

Jon