Rapid cutting device for metal sheath of high-voltage cable and use method of rapid cutting device

The invention belongs to the technical field of cable stripping and cutting, and discloses a high-voltage cable metal sheath rapid cutting device which comprises a tool frame body, an upper clamping seat, a lower clamping seat and a driving part. Upper clamping seats are respectively arranged at the two ends of the tool frame main body; optical axis guide rails are respectively arranged on two sides between the upper clamping seats; the optical axis guide rails penetrate through the two sides of the tool frame body correspondingly and are in sliding connection with the tool frame body. One side of the bottom of the upper clamping seat is hinged to one side of the top of the lower clamping seat, and the other side of the bottom of the upper clamping seat is detachably connected with the other side of the top of the lower clamping seat. The phenomenon that the high-voltage cable metal sheath is easy to deviate and slip when being cut by an electric hand grinding wheel or an annular cutter is effectively avoided