Gear hobbing precision hoisting device of numerically -controlled gear hobbing machine

The utility model discloses a gear hobbing precision hoisting device of numerically -controlled gear hobbing machine relates to numerically -controlled gear hobbing machine field, including cutter shaft, first spacer, hobbing cutter, second spacer, lock nut, the last jackscrew that is provided with of lock nut, set gradually on the cutter shaft first spacer, hobbing cutter, second spacer and locknut, lock nut with end screw thread connection under the cutter shaft. The utility model discloses a last jackscrew of adjusting and locking nut, the normal position is got back to on the deflection top that causes the cutter shaft to produce when locking lock nut for geometric tolerances beats and adjusts to within the 0.002mm, has improved the gear hobbing processing precision of numerically -controlled gear hobbing machine, has simple structure, convenient to use, gear hobbing processing precision are high, can carry out the machining precision according to user's processing demand regulation and control and the bi