On-line automatic production line for numerically-controlled punching and cutting

The utility model discloses an on-line automatic production line for numerically-controlled punching and cutting. The production line comprises a feed table, a loading device, a feed device I, a punching mainframe, a feed device II, a blanking device, a cutting device and a numerical control system, wherein the feed device I, the punching mainframe, the feed device II and the cutting device are sequentially arranged on the feed table from right to left, the punching mainframe is fixed on the feed table, the cutting device is movably arranged on the feed table, the loading device is arranged on the right side of the punching mainframe, and the blanking device is arranged on the left side of the punching mainframe. The utility model has the advantages that the production line achieves punching and cutting of a longitudinal beam through one-time positioning, and dispenses with manual transition of the longitudinal beam and secondary positioning between the procedures, so as to reduce error accumulation, achieve high production efficiency and precision and occupy less space; after punching, the longitudinal beam is clamped through clamp forceps and fed to the cutting procedure for cutting; and the punching of the next longitudinal beam is conducted simultaneously with the cutting of the previous longitudinal beam, so that the two procedures are achieved on one production line.