Safe reinforcing steel bar centralized machining device

The utility model relates to the field of machining devices, in particular to a safety type reinforcing steel bar centralized machining device which comprises a base, clamping mechanisms and an aligning mechanism, a placing groove is formed in the upper side surface of the base, and the clamping mechanisms used for positioning reinforcing steel bars are arranged at the upper ends of the front side and the rear side of the base groove. An aligning mechanism used for pushing the reinforcing steel bars is arranged in the right side of the base. When reinforcing steel bars need to be centrally cut, the reinforcing steel bars need to be sequentially arranged, the ends of the reinforcing steel bars are aligned, a pressing plate is driven to move downwards to centrally clamp the reinforcing steel bars in a containing groove, and a second motor is controlled to operate to drive a second screw to rotate and mesh to drive an embedded plate to move leftwards in an open groove; and under the limiting effect that the limi