With the development of modern machinery industry, cutting quality, continuous improvement of accuracy, to improve production efficiency, reduce production costs, with automatic cutting functions that require high intelligence is rising. Development of CNC cutting machine must meet the requirements of modern machinery industry development. Cutter into flame cutting machines, plasma cutting machine, laser cutting machine, water cutting. Laser cutting machine is the fastest efficiency, highest precision cutting, cutting thickness is generally small. Plasma cutting machine cutting speed quickly, cutting surface has a certain pitch. Flame cutting machines for the thickness of the larger carbon steel.