Cutting device capable of adjusting cutting angle

The utility model discloses a cutting device capable of adjusting the cutting angle. The cutting device comprises a rack, a workbench, a first sliding rail panel and a cutting mechanism, wherein the workbench, the first sliding rail panel and the cutting mechanism are installed on the rack. The cutting mechanism is provided with a supporting arm, a cylindrical locking piece, a cutter, a lifting assembly and a positioning assembly, the supporting arm is connected with the cutter through the cylindrical locking piece, a second sliding rail panel of the lifting assembly is movably installed on a translation sliding rail through a translation sliding seat, and a lifting sliding seat is movably installed on the second sliding rail panel through a lifting sliding rail; a limiting block on the second sliding rail panel is in threaded connection with a lifting screw, and the other end of the lifting screw is fixedly connected with the lifting sliding seat; the lifting sliding seat is controlled by the lifting screw t