The utility model relates to a numerical control machine tool equipment technical field, concretely relates to slidable formula workpiece cooling mechanism, it includes: fix support behind the cylinder on the chain drive section, the support is articulated mutually with the cylinder tailstock behind the cylinder, on the cylinder tailstock was fixed in the rear end of cylinder, the piston rod of cylinder stretched out and is fixed mutually with floating connector from the front end, and floating connector is last to be equipped with first pivot, and upper end first, the second connecting rod isworn to be equipped with in the activity in the first pivot, the lower extreme of second connecting rod is articulated mutually with the articulated seat of second, and the articulated seat of secondis fixed with the chain drive section, the lower extreme of first connecting rod is articulated mutually with first articulated seat, and first articulated seat is fixed with the cooling tube socket,be provided with universal pipe and first guide rail on the cooling tube socket, first guide rail cooperatees with the second guide rail that is fixed in the bottom of chain drive section, the utility model discloses solve the problem of universal pipe with the tool magazine mutual interference effectively, improved tool changing efficiency and workpiece cooling efficiency to precision, quality,the productivity ratio of processing work piece have been guaranteed.