ELECTRIC MACHINE AND PROCESS OF ITS MANUFACTURE Russian patent published in 1995 - IPC

FIELD: electrical engineering. SUBSTANCE: centering element with supporting shoulder and spherical surface is manufactured in electric machine having frame with centering element, stator, rotor, commutation unit and pair of bearing on ends of rotor shaft. Supporting shoulder is orthogonal to axis of rotor shaft and geometrical center of spherical surface of centering element is located close to center of turn of nearest bearing. Peculiarity of method of manufacture of given electric machine is characterized by manufacture of mentioned shoulder with allowance for thickness. After fixing of mutual position of rotor and stator frame of electric machine is given rotation relative to axis of shaft and allowance is trimmed shoulder thickness for till moment of provision of orthogonality of its treated surface to axis of shaft of electric machines is obtained. EFFECT: improved reliability in manufacture of high-precision electric machines. 2 cl, 4 dwg