It sure aint an easy process. And since these are 50 year old machines, its not such a huge market that you are going to find cheap, off the shelf kits for it.
There is a company near you, Pride Machinery in Anaheim, that has been CNC retrofitting screw machines for a good 15 years now- I would sniff around and see what they do, what they charge, and so on- at the least, you will be able to see what it really costs to do this- personally, I think if you Cnc retrofit 50 traubs, and all you get is a new truck, you been took- I would imagine to do it right, you would be talking 20 grand a pop, absolute minimum. Its hard to cnc retrofit any machine that is expected to run unattended for less than that, which is why in industry, its seldom done except on things like huge VBM's, Blanchard Grinders, and other machines where a new one would cost over 200k.
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Traub is now sold in the USA by Index, and I think the two companies are owned by the same people- I would also call up Index, and pick their brains. Start out general, telling them YOU are considering retrofitting YOUR Traubs, and if they know of it being done, who does it, and what it costs. Then you can work your way down the chain, talking to the few people in the USA who actually have any idea what is involved in this- and, most likely who are not reading this website.