Large dryer machining tool

The invention belongs to the technical field of machine manufacturing equipment and relates to a large dryer machining tool. The large dryer machining tool comprises a tool body, a chuck mechanism anda tailstock respectively arranged at two ends of the tool body, a boring mechanism arranged on the tailstock, and a carrier roller mechanism arranged on the tool body; the boring mechanism comprisesa boring rod, a cutterhead moving box arranged on the rod body of the boring rod, and a cutterhead arranged on the cutterhead moving box; the cutterhead moving box is internally provided with a cutterhead drive mechanism for driving the cutterhead moving box to move along the boring rod; a sliding through hole is formed in the tailstock in a tool body length direction; the boring rod runs throughthe sliding through hole; and a boring rod drive mechanism for driving the boring rod to move along the sliding through hole is arranged in the tailstock. With adoption of the large dryer machining tool, an ultra-large type pap