Dust collection purifying device of numerical control cutting machine

The invention provides a dust collection purifying device of a numerical control cutting machine. The dust collection purifying device of the numerical control cutting machine is simple in structure, reliable, convenient to clean and safe to use and aims to overcome the influences on production workers, production equipment and workshop environments caused by dust generated by cutting. The dust collection purifying device of the numerical control cutting machine comprises a workbench for holding a workpiece, a baffle is arranged on the lower side face of the workbench, a shielding plate capable of extending from the edge to the center of the workbench is mounted at the edge of the top surface of the workbench, the baffle, the shielding plate, the ground, the workbench and the to-be-cut workpiece disposed on the workbench form a chamber, the workbench is provided with a grid hole portion communicated with the chamber, an air inlet is arranged at one end of the chamber, and the other end of the chamber is commu