Slitting machine

The invention discloses a slitting machine, and belongs to the technical field of aerated concrete block/plate processing. The machine comprises a machine frame, an edge cutting device and a groove planing device, wherein the edge cutting device and the groove planing device are arranged on the machine frame. The edge cutting device comprises an edge cutting machine and a first driving assembly used for driving the edge cutting machine to move in the width direction. The dadoing device comprises a dadoing assembly and a second driving assembly; the second driving assembly comprises a second motor, a bevel gear box and a lead screw elevator. The second motor drives the dadoing assembly to move in the width direction through transmission of the bevel gear box and the lead screw elevator in sequence. The edge cutting device and the dadoing device can move in the width direction through the driving assemblies of the edge cutting device and the dadoing device, so that the cutting and dadoing requirements of plates