Desing and experimental investigation of composite squirrel cage rotor with temperature effects

摘要

Fiber reinforced composite material and magnetic power containing epoxy composite were employed for the materials of the spindle shaft and squirrel cage rotor, respectively to enhance the dynamic performance of high speed built-in type air spindle system because the bending natural frequency of spindle system increases when the specific bending stiffness (EI/ρ) of the shaft is high and rotor mass is reduced. Although polymer based composite rotors have low eddy current characteristics, the mechanical and magnetic properties of the composite rotor at elevated temperatures may be degraded use to the heat transfer form stator coils.