| 摘要 |
PCT No. PCT/BR97/00051 Sec. 371 Date May 28, 1998 Sec. 102(e) Date May 28, 1998 PCT Filed Sep. 26, 1997 PCT Pub. No. WO98/16000 PCT Pub. Date Apr. 16, 1998A process for mounting the shaft to the rotor of an electric motor, comprising the steps of: positioning a cylinder block (3) and a rotor (7) relative to each other with a predetermined axial spacing therebetween and with the axes of a bearing bore of the cylinder block (3) and of a central bore of rotor (7) being aligned to each other inside a hermetic chamber (10) having an atmosphere inert at pressures higher than the atmospheric pressure; introducing a shaft (5) which has been diametrically contracted by refrigeration in the hermetic chamber (10) through both the bearing bore and the central bore of the rotor (7); maintaining the shaft (5)-cylinder block (3)-rotor (7) assembly inside the hermetic chamber (10) immobilized until the diametrical thermal dilatation of the shaft (5) causes said shaft to be secured to the wall of the central bore of rotor (7) and until a thermal balance between the parts has been achieved. |
