Rotary clamping tool

The utility model relates to the technical field of clamping tools. The utility model relates to a clamping tool, in particular to a rotary clamping tool. The defects that in the prior art, use is inconvenient, and working efficiency is affected are overcome. Cylindrical seat, two sliding plates are arranged on the outer side of the cylindrical seat in a sliding manner; an arc-shaped frame is connected between the two sliding plates through bolts; a connecting rod is movably hinged to the upper surface of the arc-shaped frame; push rods are movably hinged to the other ends of the connecting rods; a clamping plate is fixedly arranged at the other end of the push rod; a clamping hole groove is formed in the cylindrical seat; the side wall of the clamping hole groove is connected with a supporting plate through a screw. Through the arrangement of the cylindrical base, the sliding plate, the connecting rod, the clamping plate, the supporting plate, the annular groove and other structures,after an object is clampe