The Investigation into Burnishing ForceBurnishing Depth and Surface Morphology in Rotary Ultrasonic Burnishing

doi:10.3969/j.issn.1000-1093.2016.04.018

Abstract

Abstract: The effective burnishing time in rotary ultrasonic burnishing is determined with by analyzing machining mechanism and characteristics of rotary ultrasonic burnishing operation. The relationship between burnishing force and burnishing depth in rotary ultrasonic burnishing is firstly modelled based on the Hertz contact theory. The relational model is then applied to predict the burnishing force. Experiments of rotary ultrasonic burnishing of titanium alloy TC4 are carried out. The burnishing force is measured using a piezoelectric dynamometer, and the machined surface morphology is observed using a white light interferometer. The microstructure perpendicular to the surface of the ultrasonic burnished workpiece is observed under an optical microscope. The results demonstrate that there is a linear correlation between burnishing force and burnishing depth in rotary ultrasonic burnishing. The experimental results are in good agreement with the theoretical and predictive results. The correlation between burnishing force and surface morphology is discussed. The research results will be beneficial for the appropriate selection of burnishing depth.

Key words: machinofature technique and equipment, rotary ultrasonic burnishing force, burnishing depth, surface morphology

CLC Number:

ZHAO Jian， WANG Bing， LIU Zhan-qiang. The Investigation into Burnishing ForceBurnishing Depth and Surface Morphology in Rotary Ultrasonic Burnishing[J]. Acta Armamentarii, 2016, 37(4): 696-704.

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