Abstract:

Based on the theoretical analysis of the industrial frequency induction heating technique, a detacher used for the bearing inner race was developed. A basic model was built for the induction heating detacher by the ANSYS finite element analysis(FEA) software. The electromagnetic field in the detacher and the temperature field in the workpiece during the induction heating process were simulated by computer and the distributions of the magnetic density and the temperature as well as the temperature field history were obtained. The ANSYS simulation proved the existence of the eddy skin effect. The design parameters of the detacher for the bearing inner race were achieved by the coupling FEA analysis of the magnetic field and the temperature field in the detacher. The results of measurement of the induction heating temperatures in the bearing inner race validated the correctness of the computer simulation.

Key words: mechanical design, bearing inner race, induction heating, eddy current, skin effect, finite element analysis(FEA)