CAM to CNC interface?

I am trying to convert a mini mill to a CNC machine with accumulated
surplus parts. Basically 3 different servo motors from different
manufacturs all of which have adequate torque and encoder resolution.
Each servo drive can be configured to operate in torque mode. In other
words a +-10VDC signal can control the motors.

I have access to MasterCamX

How do I go from 3D CAD files to corresponding servo input signals? Is
it possible to go directly from MasterCamX to servo motors?
What if any interface is needed?

Thanks in advance for any insights.