Air cooling system of machining center

The utility model discloses an air cooling system of a machining center. The air cooling system comprises a machine shell and a semiconductor refrigeration plate. The top of the machine shell is open, a cooling bin is arranged in the machine shell, an air nozzle is arranged on the wall of the cooling bin, filter cotton is arranged between the interior of the machine shell and the air nozzle, the top of the filter cotton is connected with a drying frame, the drying frame is placed on the top of the machine shell to surround an opening of the cooling bin, and a hollow-square-shaped air channel is formed in the machine shell. A fan is arranged on the wall, outside the air channel, of the machine shell, a semiconductor refrigeration plate is arranged at the bottom of the air channel and connected with a cooling fin below the semiconductor refrigeration plate, and the cooling fin is connected with a cooling fan. Compared with the prior art, the utility model has the beneficial effects that firstly, the design is s