Cam high-speed impact type metal rod and pipe material low stress impact rotary bending cracking cutting device

The invention relates to a cam high-speed impact type metal rod and pipe material low stress impact rotary bending cracking cutting device. The cam high-speed impact type metal rod and pipe material low stress impact rotary bending cracking cutting device consists of a motor transmission mechanism, a rod and pipe material fixing device and a transverse impact cutting mechanism, wherein the tail end of the motor transmission mechanism is connected with a rotating cam; the rod and pipe fixing device is carried by a sleeve to cooperate with rod and pipe materials to rotate along a longitudinal direction; and the transverse impact cutting mechanism can perform intermittent in-turn impact on a sleeve in the rod and pipe material fixing device. The metal rod and pipe materials clamped by a cantilever are subjected to low cycle impact cutting by an impact load effect and to-be-processed rod and pipe material prefabricated gap stress concentration effect combined mode, good blank section quality can be achieved; and