Numerical control lathe positioning device

The utility model discloses a numerical control lathe positioning device which comprises a base and a driving screw rod, the driving screw rod is rotatably installed on the base, a moving seat which is driven to move through rotation of the driving screw rod is installed on the base, and a rotating seat is rotatably installed on the moving seat. According to the utility model, the driving screw rod, the rotating seat, the locking screw rod and the positioning screw rod are designed; under the driving of the driving motor and the driving screw rod, the movable seat is moved and adjusted in the horizontal direction, and a lathe workpiece to be machined between the fixed positioning block and the movable positioning block is clamped and positioned between the fixed positioning block and the movable positioning block in a driving mode of the positioning screw rod. And meanwhile, due to the arrangement of the rotating base, the whole fixing plate base can be rotationally adjusted, a locking mode of the pressing bl