Method of assembling a magnet ring on a rotor

摘要

A method for assembling a permanent magnet ring (24) on a rotor body (22) for an electric motor or generator where the body (22) has a higher coefficient of expansion than the permanent magnet ring (24) includes the steps of sizing the internal diameter of the ring (24) for the greatest thermal expansion of the rotor (22) and introducing longitudinal grooves (30) in the rotor surface (26) uniformly spaced about its circumference to accommodate the expansion of the adhesive (32) used to bond the ring (24) to the rotor (22).