Method for drilling holes in spiral line of internal thread

The invention discloses a method for drilling a hole on an internal thread spiral line, which comprises the following steps of: screwing an internal thread in a workpiece to an external thread of a threaded rod, so that the axial end surface of the workpiece is propped against an inner positioning surface of a seat, and a hole rotating structure that the workpiece is screwed on the threaded rod and is positioned on the seat and can be simply disassembled is presented. A workpiece is screwed into the external thread of the threaded rod in place and then abuts against the inner positioning face of the base, the head positioning face of the threaded rod abuts against the end positioning face of the base in a contact mode, and the D-shaped rod positioning face of the D-shaped rod is matched with the D-shaped hole positioning face in the D-shaped hole to prevent the threaded rod from rotating in the base. A rotating hole structure in which a workpiece is screwed on a threaded rod and is positioned on a seat and ca