Trunnion plate for milling vise.

[Toolmaker51]

Toolmaker51-

I'm not sure if I'm understanding what you are trying to do, bu I'm wondering if bolting a vise to a vertical rotary table would get you there?

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I do that on occasion, it takes big ro-tabs to swing 6'' vise. Then on short parts, the spindle housing is in the way. I have tilting ro-tabs 12'' & 15'', but 4 & 5 axis work is challenging because position is lost with angular changes. Trunnions use bearing center as a constant. And again this is all manual, not CNC.