T-shaped nut for machine tool clamping and machine tool workbench clamping tool

The utility model discloses a T-shaped nut for machine tool clamping and a machine tool workbench clamping tool. The T-shaped nut comprises a base and an elastic jacking mechanism. A through hole is formed in the top of the base in a penetrating mode. A guide sliding groove is formed in the side face, making contact with a T-shaped groove in a machine tool workbench, of the base in a penetrating mode. The elastic jacking mechanism comprises a first clamping seat, a second clamping seat and a middle elastic piece; a split structure is adopted, the T-shaped nut can be placed in the T-shaped groove of the working table from any position over the T-shaped groove of the working table, the connecting rod can abut against the first clamping base and the second clamping base by screwing down the connecting rod, the first clamping base and the second clamping base make close contact with the inner wall of the T-shaped groove, the effect of the T-shaped nut is achieved, and the T-shaped nut can be placed in the T-shape