Self-weight type spherical positioning detection device and assembling method

The invention discloses a self-weight type spherical positioning detection device and an assembling method, the device comprises a spherical positioning assembly, a fixed workbench and a tool bottom plate, the spherical positioning assembly comprises a positioning reference seat and a positioning reference ring, the positioning reference seat comprises a mounting base, a positioning ball, an annular magnet and a magnet gland, and the positioning reference ring is arranged on the mounting base. A conical hole is formed in the mounting base, and the positioning ball is fixed on the mounting base; the annular magnet is pressed in the annular groove of the mounting base; the positioning reference ring comprises a positioning ring and a cylindrical magnet, a conical positioning hole is formed in the positioning ring and matched with the positioning ball to form positioning guiding and limiting, and the cylindrical magnet is fixed to the positioning ring; the top surfaces of the three or more spherical positioning