Thank you for the info. Hopefully, I can continue to read through some of the posts and glean some vital information. Is there a better place for newbies such as myself that know virtually nothing about conversions? As I mentioned, I'm willing to learn and actually like to figure out stuff that challenges me. I know that successfully retrofitting this mill certainly be very fulfilling. However, I have the feeling that there is also a large possibility for frustration and disappointment.
Anyway, the machine I've got has Gettys N360 drives and Gould DC servos. I have quite a bit of documentation and schematics for the drives. However, most of it is information that I don't understand (yet). The upside is that, should I be able to use them for a retrofit, I should have any information necessary for wiring them up to new components. There is also some information for the inner workings of the servos, but I'm not sure if there was anything pertaining to encoders.
The spindle drive on the machine is a Fanuc AC drive. I have no idea whether or not it could be wired into a retrofit system. It looks like a pretty substantial piece of equipment. I have schematics that detail how it is tied into the current control. So, like the servo drives, I should have any info necessary to wire it up (should I be able to utilize it).
Well, thanks again for the links to the equipment. I will certainly have to learn more about what I'm doing before I start purchasing equipment. I have the feeling that, once I learn a little more about retrofits, I won't be so intimidated by the process. The current control is a mind-boggling mess of wires that run in every direction. Fortunately, most (but not all) of it is clearly labeled and organized. I only hope that any attempt I make to retrofit will allow this machine to start making chips again. It's a damned nice machine that is very capable of doing quality work. I just need it to run! If anyone can give me some more pointers on where to start learning, please let me know. Thanks!