Meng Jianbing, Huang Bingqi, Dong Xiaojuan, Hu Yizhong, Zhao Yugang, Wei Xiuting, Luan Xiaosheng
School of Mechanical Engineering, Shandong University of Technology, Zibo 255000, China.
Micromachines (Basel). 2020 Feb 5;11(2):168. doi: 10.3390/mi11020168.
There are high cutting temperatures, large tool wear, and poor tool life in conventional machining, owing to the superior strength and low thermal conductivity of titanium alloy. In this work, ultrasonic atomization assisted turning (UAAT) of Ti6Al4V was performed with a mixed water-soluble oil-based cutting fluid, dispersed into tiny droplets by the high frequency vibration of a piezoelectric crystal. Different cutting speeds and two machining environments, dry and ultrasonic atomization assisted machining, were considered in the investigation of tool life, tool wear morphology, surface roughness, and chip morphology. In comparison with dry machining, UAAT shows lower tool wear and longer tool life due to the advantages of cooling and lubrication. Furthermore, better surface roughness, smoother chip edges, and shorter tool-chip contact length were obtained with UAAT.
由于钛合金具有高强度和低导热性，传统加工中存在切削温度高、刀具磨损大以及刀具寿命短的问题。在这项工作中，使用一种水溶性混合油基切削液对Ti6Al4V进行超声雾化辅助车削（UAAT），该切削液通过压电晶体的高频振动分散成微小液滴。在刀具寿命、刀具磨损形态、表面粗糙度和切屑形态的研究中，考虑了不同的切削速度以及两种加工环境，即干式加工和超声雾化辅助加工。与干式加工相比，由于冷却和润滑的优势，超声雾化辅助车削表现出更低的刀具磨损和更长的刀具寿命。此外，超声雾化辅助车削获得了更好的表面粗糙度、更光滑的切屑边缘以及更短的刀具-切屑接触长度。
