Automatic dust-free hinge hole numerical control machine

The utility model belongs to the field of numerical control machine tools, and particularly relates to an automatic dust-free hinge hole numerical control machine which comprises a first support, a connecting plate, a second support and a high-precision positioning unit. A first support and a second support are symmetrically and fixedly connected to the two ends of the connecting plate. High-precision positioning units are arranged on the first bracket and the second bracket; the high-precision positioning unit comprises a first end plate, a second end plate and a first screw rod; the first end plates are symmetrically and fixedly connected to the two ends of the first support. The second end plates are symmetrically and fixedly connected to the two ends of the second support. The third motor drives the third lead screw to rotate at high precision, the first motor drives the first lead screw to rotate at high precision, and therefore high-precision free movement in the two perpendicular directions can be achi