Transmission shaft connecting mechanism of automatic lathe feeding machine

The utility model discloses a transmission shaft connecting mechanism of an automatic lathe feeding machine. The device comprises a first transmission shaft, a first connecting plate, a second connecting plate, a round rod, a first U-shaped block, a first connecting column, a second connecting column, a second U-shaped block, a first through hole, a second transmission shaft, a bolt, a nut, a first connector, a second connector, a connecting hole, a positioning groove, a positioning column, a second through hole, a movable column, an adjusting hole and a movable cavity. The positioning columnsand the positioning grooves are of regular hexagon structures, the positioning columns can be directly clamped in the positioning grooves so that the first connecting plate and the second connectingplate can be positioned, and installation is simple. And an adjusting structure is arranged between the first connecting column and the second connecting column, the distance between the first connecting column and the second