Machining device for nodular cast iron pipe

The invention discloses a nodular cast iron pipe machining device and relates to the technical field of machining, the nodular cast iron pipe machining device comprises a machining table, a rotating mechanism and a grinding mechanism, the rotating mechanism is arranged on the upper surface of the machining table, a back plate is fixedly installed on the upper surface of the machining table, and the grinding mechanism is arranged on the back plate; and the rotating mechanism comprises a first fixing seat and a second fixing seat, a driving motor is fixedly installed on the left wall of the first fixing seat, and a first clamping seat is fixedly installed at the output end of the driving motor. The left end of a cast iron pipe is in butt joint with a first clamping seat through a worker, the right end of the cast iron pipe is in butt joint with a second clamping seat, and then a first hydraulic oil cylinder is started to push a second fixing seat to move leftwards, so that the cast iron pipe is clamped by the f