Plasma cutting machine

The invention discloses a plasma cutting machine. The plasma cutting machine comprises an operation table, a base is arranged on the lower surface of the operation table, two symmetric mounting platesare arranged on the upper surface of the operation table, and a sliding groove is formed in the outer side face of each mounting plate; a driving device is arranged in the sliding grooves, and a supporting base is arranged on the side face of a screw rod of the driving device; a fixing plate is arranged in the middle of the inner side face of the supporting plate of the supporting base; a movingdevice is arranged on the upper surface of the fixing plate, and a fixing ring is arranged at the lower end of the side face of a sliding block of a moving device. The plasma cutting machine can drivea plasma gun to transversely move through a stepping motor and the screw rod and drive the plasma gun to move longitudinally through a linear motor and a sliding rail, and machining of workpieces isfacilitated; smoke can be su