MOTOR SHAFT FOR ROTATION/DIRECT ACTION CONVERTING MOTOR AND METHOD OF MANUFACTURING THE MOTOR SHAFT

摘要

A rotation/direct action converting motor shaft (33), comprising a platy rotation stopping part (33b) and a cylindrical thread part (33a), wherein a positioning hole (33h) used for rolling is provided at the axial end part (33d) of the motor shaft so as to prevent a positional displacement or a phase displacement of thread in the rolling.