Elastic jacking and pulling device and using method thereof

The invention discloses an elastic jacking and pulling device and a using method thereof, and belongs to the field of machining, the elastic jacking and pulling device comprises a taper shank main body, a tip main body, a clamping sleeve and a jacking ring, and the taper shank main body in a taper shank assembly is fixed to a tailstock on a lathe, so that the position of the taper shank main body is determined; the first elastic piece and the second elastic piece which are arranged on the inner wall face and the outer wall face of the taper shank body respectively apply axial pre-tightening force to the center body and the clamping sleeve, the pre-tightening force borne by the clamping sleeve is transmitted to the top ring, a workpiece is made to be always subjected to tensioning force from the top ring and jacking force from the center body, and therefore the workpiece is fixed. According to the elastic jacking and pulling device and the using method thereof, tensioning force and jacking force are applied to