钛合金低频振动制孔切屑形态表征方法研究

Research on Characterization Method of Titanium Alloy Chip Shape in Low Frequency Vibration Assisted Hole Making

建立了两切削刃低频振动制孔切削厚度模型和切屑扇形角模型,确立了切屑分离条件,提出了切屑扇形角与切削角位移之间的经验公式。开展切屑形态分析试验,获得了制孔参数与切屑形态之间的对应关系,确定了与较好扇形切屑形态对应的A–f参数组合范围,并对扇形切屑的扇形角进行测量,将扇形角实测值与理论计算值进行比较分析,结果表明所建立的扇形切屑角模型能够较好地表征实际扇形切屑形态。

The cutting thickness model and the chip sector angle model for low frequency vibration assisted hole making with two cutting edges are established,the chip separation conditions are established,and the empirical formula between the chip sector angle and the cutting angle displacement is proposed.The chip shape analysis test was carried out,by which the corresponding relationship between the hole making parameters and the chip shape was obtained,and the A-f parameter combination range corresponding to the better chip shape was determined.The sector angle of the chip was measured,which was compared and analyzed with the theoretical calculation value,and the result shows that the established chip sector angle model has high accuracy for characterizing the actual chip shape.