Research on the Influence of the Structural Parameters of the Contactless Power Transmission Device on the Coupling Coefficient in Rotary Ultrasonic Machining

Aiming at the phenomenon of contact power transmission in rotary ultrasonic machining that is not conducive to tool change, severe carbon brush wear, carbon deposits and ignition, a partially coupled contactless power transmission model was established. According to the theoretical model, the magnetic core structure and coil parameters are designed, and the electromagnetic simulation software Maxwell is used to simulate the transient electromagnetic field of the model, and the coupling coefficient and the maximum magnetic flux density change law under different structural parameters are analyzed. The simulation results show that as the central angle of the primary core increases, the coupling degree gradually increases, and the maximum magnetic flux density does not change significantly; with the increase of the air gap, the coupling degree gradually decreases, and the maximum magnetic flux density decays rapidly; As the depth of the window increases, the degree of coupling gradually decreases, on the contrary, the maximum magnetic flux density gradually increases. The effect of structural parameter changes on the device performance is obtained through simulation, which provides a reference for the optimal design of contactless power transmission devices.

關鍵字

Rotary ultrasonic machining ； Contactless power transmission ； Coupling coefficient ； Maximum magnetic flux density

參考文獻

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Research on the Influence of the Structural Parameters of the Contactless Power Transmission Device on the Coupling Coefficient in Rotary Ultrasonic Machining

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