Coordinate positioning auxiliary device for laser tracker used for large-scale curved surface

The invention relates to a coordinate positioning auxiliary device for a laser tracker used for a large-scale curved surface, and belongs to the technical field of laser tracking. The coordinate positioning auxiliary device for the laser tracker comprises a mounting seat which consists of an upper cover (4) and a lower seat (6), wherein the bottom of the lower seat (6) is provided with vertical central hole; symmetrical vertical guide grooves (10) are arranged on both opposite sides of the lower seat; the lower part of a positioning rod (7) of which the lower end is conical is arranged inside the vertical central hole (8) of a pedestal, and the upper part of the positioning rod (7) is supported on the pedestal through a spring (9); a horizontal compression bar (5) is arranged inside a horizontal through hole on the upper part of the positioning rod (7) and extends out of the vertical guide grooves (10); the upper cover is provided with a vertical central hole (3); and a magnet (2) used for attracting a target