Surface Formation Mechanism in Ultrasonic Elliptical Vibration Cutting of Tungsten Alloy

Abstract

AbstractDue to its unique physical and mechanical properties, high specific gravity tungsten alloy has high application value in high temperature, radiation, and other environments. As an ultra-precision cutting method, Ultrasonic Elliptical Vibration Cutting (UEVC) has special advantages in the cutting of tungsten alloys with high specific gravity. Based on the ultrasonic elliptical vibration cutting trajectory, this paper analyzes the influence of cutting edge radius, feed speed, cutting depth, ultrasonic amplitude, ultrasonic frequency, the ratio of length to a minor axis, cutting speed, and other processing parameters on the cutting surface profile. At the same time, through single-edge cutting experiments, the law of diamond tool wear and the effect of tool wear on the cutting surface quality under different cutting distances are obtained. Combining the characteristics of tungsten materials and the law of diamond tool wear, a prediction model for cutting surface morphology of high-density tungsten alloy materials is established. The actual cutting surface roughness is 1.7–3.2 times the theoretical surface roughness.KeywordsHigh specific gravity tungsten alloyUltrasonic Elliptical Vibration CuttingDiamond toolCutting surface topography