Rotary cutter shaft of rotary electric heating cutting machine

The utility model discloses a rotary cutter shaft of a rotary electric heating cutting machine. The rotary cutter shaft comprises a shaft body, a first bearing stand, a second bearing stand, a driving device connecting piece and a cutter mounting groove, the end part of the second bearing stand is provided with a slip ring mounting shaft extending along the outside of the second bearing stand, the center of the slip ring mounting shaft is provided with a lead axial through hole along the axial direction, the shaft body is provided with a lead radial through hole along the radial direction on the inner side of the second bearing stand, and the lead axial through hole is communicated with the lead radial through hole; shaft body reinforcing ribs are uniformly arranged on the shaft body in the axial direction of the shaft body, are arc-shaped and are arranged on the circumferential surface of the shaft body in a sleeving manner. According to the rotating cutter shaft, the slip ring mounting shaft is arranged on