Fluent dustproof rail and numerically controlled machine tool

The invention applies to the field of numerically controlled machine tools, and particularly discloses a fluent dustproof rail and a numerically controlled machine tool. The rail comprises a moving limiting clamp which is connected with a guiderail structure in a sliding mode; a plurality of limiting clamp supporting leg structures are arranged on the moving limiting clamp; supporting plates are installed on the limiting clamp supporting leg structures; abutting plate structures II are installed on the supporting plates; abutting plate structures I are installed on the supporting plates in a dismountable adjusting mode; and a plurality of shovel bodies are evenly arranged on the abutting plate structures I, the abutting plate structures II, and the supporting plates. The moving limiting clamp utilizes the arranged limiting clamp supporting leg structures to be limited on the guiderail structure and to be used for fixed-rail guided movement, is matched with the shovel bodies arranged onthe abutting plate struc