1. The body of the main machine adopts a frame structure, and the working mode is selected: there are two kinds of working specifications: adjustment, semi-automatic (single cycle), and there are two kinds of forming methods: constant pressure forming and fixed process forming. Oil blocking measures are provided at the joints of the upper beam, slide block and oil cylinder of the hydraulic press. The structural parts are finished by advanced equipment to ensure the appearance of the whole fuselage is smooth and beautiful, high precision and good rigidity. The size of the table should be designed and made in accordance with the size of the stamping die, and the T-slot and layout of the table aperture should be designed and made in accordance with the size of the stamping die. The slide block is all steel plate welded box structure, the slide block stroke is 400, and the slide block is equipped with displacement sensor signaling device and travel limit limiting device, which can effectively prevent overtravel. Hydraulic system low pressure large-diameter pipe with flexible joint vibration isolation, diameter of more than 32 of the pipe are used flange connection, vibration resistance, leakage resistance is good; The working oil temperature of hydraulic oil shall not exceed 50±5℃, and anti-condensation dripping treatment shall be carried out