Development of ultrasonic fine-lapping device

There must be oil storing structure on the working surface of the engine cylinder. Presently there always are ten thousands of micro-pits of independent, uniform distribution, regular shape and uniform depths on the cylinder working surface. On this basis, we propose to form additional thin and nonuniformly distributed oil grooves to develop complex oil storing structure by means of ultrasonic fine lapping. The principle of ultrasonic fine lapping is proposed in this paper, and a practical device is designed. The resonance frequency are measured.