| 摘要 |
A method for precision manufacture of bearing supports for electric rotary machines such as electric motors, said bearing supports comprising a cup-shaped member the larger end of which forms a mounting portion for being secured in a permanent way, such as by bonding, to a stator end face inside the stator end windings, and the smaller end of which provides location for rotor bearing means, consisting of the steps of pressing sheet metal to form the support by multi-stage transfer pressing in continuous working stages, forming the larger end of the bearing support in one stage to provide an abutment surface parallel to a plane at substantially right angles to a rotor bearing-locating surface of generally cylindrical form in the smaller hub-like end of the bearing support, forming in another stage a generally cylindrical surface concentric with the rotor bearing-locating surface and forming in still another stage at least one bonding surface dependent of said surfaces determining dimensional and geometrical accuracy. |
