Gantry type fine plasma numerical control cutting machine

The utility model belongs to the technical field of numerical control cutting machines, and particularly relates to a gantry type fine plasma numerical control cutting machine which comprises a hollow pedestal, fastening assemblies are horizontally arranged on the two symmetrical sides in the pedestal, and each fastening assembly comprises a first electric telescopic rod and a clamping piece fixedly connected with one end of the first electric telescopic rod. The two fastening assemblies are symmetrically distributed in the pedestal, one end of the first electric telescopic rod is vertically and fixedly arranged on the inner wall of the pedestal, a steel plate is arranged between the two clamping pieces in a suspended mode, and a switch is arranged on one side of the pedestal. The clamping pieces are clamped on the steel plate, so that the steel plate is suspended in the pedestal, the steel plate is fastened by the equipment, the steel plate is prevented from shaking in the pedestal, meanwhile, the suspended