新型非接触式电能传输装置在超声加工中的应用

The Application of New Non-Contract Electromagnetic Conversion Device in Ultrasonic Machining

针对目前超声加工中电能传输装置存在碳刷磨损严重、转速限制等问题,本文基于电磁感应原理,参照高频变压器设计理论设计了一套新型旋转式电磁变换器,不仅实现了电能的非接触式传输,同时可满足加工中心自动换刀需求。由Maxwell3D仿真分析可知,经过合适的电容补偿网络,电能传输效率可大幅提升。此外,还研究了磁心间隙及转速变化对传递效率的影响。最后,实验结果显示,该装置电能传输效率可达54.8%,这对解决旋转部件诸如机器人旋转手臂、超声加工的电能传输问题具有一定的工程参考价值。

To the problems about the traditional circumstances where the brush wears fast and the limitation of higher speed.A new device was designed that based on the principle of Electromagnetic induction and high-frequency transformer which can translate power in a non-contact way.This is not only met the demand of non-contact power transmission,but also the need of changing cutting tools automatically for the machining center.From the result of simulation in Maxwell,the Energy efficiency could improve largely through proper compensating network.In addition,two crucial factors,air-gap and spindle speed were investigated which could affect the efficiency.At last,the experimental data showed that the efficiency can up to 54.8%,It has some value in the application of electric transfer engineering such as rotating arm of robot and ultrasonic machining.