Corner cutting device for aluminum alloy door and window machining

The utility model discloses a corner cutting device for aluminum alloy door and window machining, and particularly relates to the field of door and window machining equipment.The corner cutting device comprises a corner cutting machine, a saw blade is installed in the corner cutting machine, a protective cover is fixedly connected to the position, opposite to the saw blade, of the corner cutting machine, and a protective structure is arranged on the upper surface of the protective cover and comprises a fixing plate; the fixing plate is fixedly connected to the upper surface of the protective cover, the cross section of the fixing plate is in a U shape, round rods are horizontally and rotationally connected to the surfaces of two side arms of the fixing plate, L-shaped plates are fixedly connected to the arc surfaces of the round rods, and baffles are fixedly connected to the lower surfaces of long arms of the L-shaped plates. According to the saw blade protection device, the protection structure is arranged,