Cutting generally refers to the cutting of metal. A plasma cutting machine is a cutting method that uses a very thin and high-temperature plasma arc to quickly melt the local metal and then blow the molten metal away with an airflow. The X-axis adopts a high-precision linear circular guide rail, and the Y-axis adopts a high-precision linear guide rail, which has less running resistance. The straightness error of the two rails of the X-axis is guaranteed to be less than ±0.05mm, and the vertical error of the X-axis and Y-axis is not more than ±0.05mm. The running trolley adopts a lightweight structure. Under the action of air pressure, voltage, and magnetic field, the columnar free arc (which can be compressed into a plasma arc, the conductive section of the plasma arc has a small energy concentration. The gas in the arc column can almost reach the ion state. The arc temperature can be as high as 15000℃-30000 ℃. It can quickly melt metal and other objects.