Study on Ultrasonic Cavitaion Field of Power Ultrasonic Honing

Power ultrasonic honing is an advanced precision grinding technology, with ultrasonic vibration applied on the oilstone surface. The high frequency vibration of oilstone make cutting fluid appear cavitation effect, which make acoustic field of power ultrasonic honing present instability and complex, and even appear chatter and noise. In this paper, the cavitation mechanism of power ultrasonic honing is explained, and the oilstone radiated pressure are obtained. Furthermore, the dynamics and radiated pressure model of cavitation bubble in the grinding area is established and analysed. Finally, the pressure of oilstone surface is measured by ultrasonic sound intensity measuring instrument. It shows that the acoustic pressure radiated from oilstone with theoretical calculations and simulations are one order higher than cavitational threshold value of cutting fluid, ultrasonic cavitation occurs. Cavitation bubbles have been nonlinear vibration with high frequency, great amplitude and up to 107 Pa orders pressure, which seriously affect the workpiece processing quality and oilstone life. Comparisons between theoretical analysis and experimental verification have shown a satisfactory agreement.