Clamping equipment of numerical control machine tool

The utility model discloses a numerical control machine tool clamping device, which relates to the technical field of numerical control machine tools and comprises a mounting table, a support frame and a numerical control nicking tool assembly, the interior of the mounting table is in a cavity shape, the support frame is fixedly mounted on one side of the mounting table, and the numerical control nicking tool assembly is slidably mounted on one side of the mounting table. And a clamping mechanism is fixedly mounted in an inner cavity of the mounting table. According to the scheme, the output end of the driving air cylinder moves in the direction of the first guide rod, then the second clamping plate fixed to one side of the output end of the driving air cylinder is driven to move in the direction of the first guide rod in the same direction, and in the moving process of the second clamping plate, an annular gear installed on one side of the containing groove base is engaged with a first sliding toothed plate;