Screw locking machine

The invention discloses a screw locking machine. The screw locking machine comprises a machine shell, a transmission cavity is formed in the upper end wall in the machine shell, a sliding cavity is formed in the lower end of the transmission cavity, a centralizing cavity is formed in the lower end of the sliding cavity, reset cavities are symmetrically formed in the left end and the right end of the centralizing cavity, and an operating mechanism is arranged in the machine shell. The operation mechanism is used for controlling screws put into the centralizing cavity to move. According to the screw locking machine, the two sets of hydraulic cylinders are used for automatically adjusting screw holes, at different angles and positions, of workpieces, so that non-horizontal-plane automatic screw locking is achieved, the defect that a traditional screw locking machine cannot work on a non-horizontal plane is overcome, a centralizing and clamping mechanism can automatically position and lock screws of different spe