The large parts of the machine tool foundation are all designed by FEM finite element analysis. They are made of Mihanna cast iron and cast by resin sandprocess. Reasonable reinforcement arrangement is carried out to ensure the good anti-twist ability of the casting. The overall layout of the machine tool adopts a positive T-shaped structure with three-pointsupport. The CNC turntable adopts high-precision cross roller bearing,which meets the requirements ofhigh-speed rotation of the CNCturntable, greatly improves the radial bearing capacity of theturntable, and increases the dynamic and static rigidity and r unning stability of the turntable.