Rotary cutter with blades convenient to replace

The rotary cutter comprises a cutter holder, a plurality of sets of grooves are formed in the surface of the cutter holder, a movable plate is connected into the grooves in a sliding mode, a baffle is welded to one side of the surface of the top of the movable plate, a sector plate is welded to the side, away from the baffle, of the movable plate, through holes are formed in the two sides of the sector plate, and the through holes are communicated with the baffle. A pressing plate is slidably connected into the pupil, a clamping block is welded to one end of the pressing plate, a cavity is formed in the side, close to the fan-shaped plate, of the tool apron, and a moving block and a telescopic spring are arranged in the cavity. According to the rotary cutter with the blades convenient to replace, the purpose of conveniently replacing the blades of the rotary cutter can be achieved by arranging the movable plate, the sector plate and the like, the purpose of fixing the blades of the rotary cutter is achieved b