Safety observation door for numerical control machining center

The utility model relates to a safety observation door for a numerical control machining center, which comprises a machining center observation door, the machining center observation door consists of an outer frame and glass, the glass is fixedly arranged in the outer frame in a penetrating manner, and a heat insulation box is fixedly arranged on one side of the top of the outer frame in a penetrating manner. The utility model relates to the technical field of numerical control machining centers. In the part machining process of the numerical control machining center, through mutual cooperation of the gas injection assembly, the gas heating assembly, the plugging assembly and the heat insulation box, hot gas is sprayed to the glass from the top side of the glass, cutting fluid attached to the glass is pushed to rapidly fall down, and the glass is heated, so that a very small amount of residual water drops are rapidly evaporated and gasified; when the improved numerical control center observation door is used