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I don't know about Eurotech, but Miyano's can do the same thing and it's just an M code to slave the sub spindle to the turret. Not a huge deal. If that wasn't the case, it would be a nightmare haha.
Mike
Put me down for EDM. A CAPABLE edm shop should be able to knock those out pretty quick with the right fixturing and equipment. Trust me, I'm all for doing things complete in the machine but in this case I think you will die on the cycle time and you will never get the quality quite where you want it to be.
Mike
Did it all the time. Takes the right part though. Usually looser tolerances in easier to machine materials. Lots of tool replacement, HMC is the way to go.
+1
Mike
Haha was just going to post that photo but mic6 beat me to it! Just noticed how weak the area that failed looks. Especially for something as brittle as cast iron.
Mike
https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0CB0QtwIwAGoVChMI9J6nxbmfyAIVRCgeCh2mmQNw&url=http%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DLSJ8lvFXTTs&usg=AFQjCNGSLVwEqXtdhCeHI1zkpx6WVu3Qaw&sig2=-C0VblcXWyvNQmzkiTUwsQ&bvm=bv.103627116,d.dmo
https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=video&cd=1&cad=rja&uact=8&ved=0CC8QtwIwAGoVChMIxoHb17mfyAIVAV0eCh0N6QgJ&url=http%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DhdP8jBeu4js&usg=AFQjCNG8MlvxnZTQxpqAYs7kAyIDXTlx4w&sig2=nVBHCyGTsmiLj6RFIhWHVQ&bvm=bv.103627116,d.dmo
Mike
Is this a straight or right angle holder? What size tools are you using at this RPM? If you are cutting with an EM less than 3/8, take a look at a "geared up" holder with at least 2:1 ratio. That will allow you to run at higher RPM with reduced heat.
Mike
That is typical of most live holder when ran for prolonged periods. The duty cycle is pretty pathetic and they will require constant rebuild if doing and serious milling. We have an extra of each holder and swap them out when they start to have abnormal high load. That is one of the main benefits to a B-axis mill turn. Real milling spindle.
Mike
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