| 摘要 |
PURPOSE:To control deformation after pressing and to obtain a stator which can select rotary direction at the time of incorparating the stator by a method wherein the shape of the stator except that of a magnetic pole hole is formed in bilateral symmetry. CONSTITUTION:A stator 5 is obtained from a hoop material consisting of a high- permeability magnetic substance such as permalloy or the like by punching the stator 5 having a magnetic pole hole 6 (a hole for accommodating a rotor) and holes for fixing screws. Where, the shape of the stator 5 except the magnetic hole 6 is formed in bilateral symmetry viewing from the center of the magnetic hole 6 and the magnetic hole 6 is provided with a pair of notches 7 for deciding the rotary direction of the rotor. This can select the rotary direction of the rotor by selecting the face and reverse at the time of incorporating the stator 5 and the symmetrical shape of the stator 5 can mostly control deformation after punching processing. |
