Constant-force feeding band sawing machine

The invention relates to a constant-force feeding band sawing machine, and relates to the technical field of metal part discharging equipment. The constant-force feeding band sawing machine comprisesa main bracket and a cutting bracket, a cutting mechanism is disposed on the cutting bracket, and the main bracket is provided with a feeding device for driving the cutting bracket to slide. The feeding device comprises a first lead screw and a torsion limiting mechanism, one end of the first lead screw is fixedly connected to the main bracket, the torsion limiting mechanism comprises a first connecting shaft, a second connecting shaft and a clamping assembly, the first connecting shaft is in threaded connection with the first lead screw, the outer periphery of the first lead screw is sleevedwith the second connecting shaft, the second connecting shaft is rotationally connected with the first lead screw and is in transmission connection with a driving motor, and the first connecting shaftis connected with the seco