emc conversion of the tape-O-matic

As I continue to educate myself on what its going to take to complete
this conversion, I want to see how much I've absorbed.
I've got the PC with emc running. The tape-O-matic has servo's for the
X, Y, and Z (quill driven through a fine pitched rack) The spindle is
varaible speed through the motor, and the head is moved up and down with
a regular induction motor (1/4 hp). If I get a servo-to-go card, how
many axis would I need? I know that it would be best to prepare for a
rotary axis at some time, but doesn't that still only equal 4 axis? Does
the STG card control the spindle speed, or other functions as additional
axis?
That said, if I can't use the amplifiers on the mill, I'll need 3 of
those. I may need a new spindle speed drive. Is there anything else
thats a big item?Power supplies I know of, and the cabling and
connectors. The mill has a mist coolant setup that I might be able to
use.
I've gotten a bit better at the scanning, and made my way through most
of the literature I got with the mill. I posted 3 more schematics to the
RCM dropbox. They are all related to the servo motor drives. The first
shows the basic setup and power supply, called tapemot.jpg. The second
shows the Schmitt trigger circuits used. (I can make out the part
numbers on the originals if that will help anyone make sense of them,
but they aren't readable on the jpg) that file is called tapetrig.jpg.
The last file is the shunt amplifier PC board (on the top right of the
dwg) and the amplifer & null PCC (?) in the lower left. This file is
tapenull.jpg It also has the output waveforms and timing graphed on it.
This is all mostly over my head, except the power supply portion, so any
help from the group as to the suitibility of these amps for potential
reuse is appreciated.
Also, I noticed that emc is written to support the STG card version 1
only, but on the STG site, they recommend using their newer card,
version 2. Is this likely to be an issue? Will a driver for version 2 be
written for emc?
Lastly, will the limit switches get hooked directly to the card, or is
something else needed inbetween? (I think this is just the tip of the
iceberg on the questions...)

Brad Heuver
Mechanical Sub-Systems fax 734-523-6052
734-52-33480 bheuver@...