MOTORES MEJORADOS Y PROCEDIMIENTOS DE FABRICACION DE LOS MISMOS

SE DESCUBRE UN GRUPO DE PRODUCTOS ESTRUCTURADOS DE MODELOS DE MOTORES ELECTRICOS QUE UTILIZAN UN NUMERO MAXIMO DE COMPONENTES COMUNES EN UN NUMERO MAXIMO DE APLICACIONES DIFERENTES Y METODOS PARA AJUSTAR VARIOS SUB-COMPONENTES DE MOTOR. EL MOTOR (20) ESTA FORMADO POR: UN MARCO (22) QUE PUEDE TENER UN COJINETE (60) ALINEADO LIBREMENTE COLOCADO ADHESIVAMENTE EN EL INTERIOR DE FORMA OPERATIVA Y POR LO MENOS DOS IMANES PERMANENTES (24) TAMBIEN UNIDOS A EL ADHESIVAMENTE; UNA ARMADURA (26) QUE INCLUYE UN EJE (32) APROXIMADAMENTE UNIFORME CON UN NUCLEO (28) FORMADO POR VARIAS LAMINAS (30) OPTIMIZADOS POR ORDENADOR CALENTADOS POR INDUCCION ANTES DE SU UNION AL EJE DE TAL FORMA QUE SE PROPORCIONA UNA TENSION MINIMA AL EJE POR LAS LAMINAS (30). UN ALA DE MONTAJE (64) SE UNE ADHESIVAMENTE AL MARCO (22). TAMBIEN SE REVELAN METODOS DE UNION DE VARIOS COMPONENTES COMO EL CONMUTADOR (38) AL EJE (32), LOS IMANES (24) AL MARCO (22) Y LOS COJINETES (60) ALINEADOS LIBREMENTE EN EL MARCO (22) Y LOS CASQUILLOSPROTECTORES DE LOS EXTREMOS (218). A structured product family of dynamoelectric machines for use in a plurality of applications has a frame with a closed end, and a set of permanent magnets is adhesively secured within the frame. An armature disposed in the frame for interaction with the permanent magnets includes a shaft, a core having a set of winding receiving slots therein, and a commutator. During manufacturing and assembly, stress on the motor shaft and commutator is minimized. A brush plate is associated with the frame for locating a set of brushes relative to the commutator, and an end shield is secured to the frame opposite its closed end. At least one freely aligning bearing assembly disposed in the end shield for freely aligning the shaft and including a bearing and a retainer having predetermined conditions preset with the retainer being adhesively secured to the end shield. A bracket is adhesively secured to the frame for connecting the dynamoelectric machine in anyone of the applications; and a novel brush assembly is provided. Specifically, four members attached to the brush boxes are inserted through the D slots and are then crimped so that minimum stress is introduced into the brush plate. The armature commutator is first rough finished, the armature is then balanced and the commutator surface is final finished last prior to assembly into the frame. The motor has a relatively stiff end shield having a freely aligning bearing adhesively connected therein.