When turning an ordinary CNC lathe, the spindle drives the workpiece to do simple rotary motion, and turning only depends on the movement of the tool; The spindle of core shifting machine can move in Z direction, and turning depends on the cooperation of cutter and spindle. Most core shifting machines have the function of turning and milling. The outer diameter of parts processed by moving core is relatively small, the largest is only more than 20, and the requirements for the outer diameter of materials are also relatively high.
It turns out that I am short-sighted. At present, the largest machine tool I know is a 32-capacity machine tool, that is, the maximum machining diameter is 32 mm