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本文介绍了功率超声抛光的主要物理机理和以Ｄ类功率放大器实现超声抛光的电路工作原理；给出了功率超声抛光仪的电路图和实验结果。为功率超声加工的广泛应用增加了新内容。
In this paper, the main physical mechanism of power ultrasonic polishing and the working principle of ultrasonic polishing with class D power amplifier are introduced. The circuit diagram and experimental results of power ultrasonic polishing instrument are given. New additions have been made to the wide range of applications of power ultrasonic machining.