Numerical control smoothing machine for ship plate plane welded junction salient point

The invention provides an automatic ship plate welded junction bump smoothing machine which comprises a rack, a cutting device, a lifting device, a walking device, a magnetic roller device and an air pressure device, the rack serves as a supporting framework of the automatic ship plate welded junction bump smoothing machine, and the cutting device, the lifting device, the walking device, the magnetic roller device and the air pressure device are arranged by referring to the supporting framework; the two sets of cutting devices, the two sets of lifting devices, the two sets of magnetic roller devices and the two sets of walking devices are arranged with the supporting framework as a reference, the left side and the right side of the supporting framework are each provided with one set of lifting device and one set of cutting device, and the lifting devices are connected with the rack and the cutting devices respectively. The cutting devices are arranged on the left side and the right side of the supporting fram