Rotary drilling method and tool thereof

The invention discloses a rotary drilling method and a tool thereof. The tool mainly comprises a working platform and a supporting assembly; the inner side wall of the working platform is provided with a recycling box, a scrap board is welded to the inner side wall of the working platform, and the scrap board is located above the recycling box; the supporting assembly comprises a base, a rod bodyA is welded to the top of the base, a rod body B is mounted on the inner side wall of the rod body A, a support arm A is rotationally connected to the outer side wall of the rod body B, a support armB is fixed to the outer side wall of the rod body B through bolts, and a support arm C is rotationally connected to one side of the support arm A; and when a workpiece is cut, a cutting die is fixed to a pipe body B, a switch is switched on to make an electromagnetic generator apply magnetic force to an electromagnetic rod, the electromagnetic rod is attracted to the outer surface of the cutting die, then a motor works, th