超声纵振珩磨表面微观特性的试验研究

Experimental Research on the Surface Microscopic Features of Longitudinal Uitrasonic Honing

在文献[1]中,作者对径向超声振动磨削和纵向（轴向）超声振动珩磨的磨削特点进行了对比研究,建立了磨粒纵向超声振动珩磨的切削模型,推导了纵向超声振动珩磨临界速度的计算公式。为了验证所建模型的正确性及进一步研究超声纵振珩磨的磨削表面特征,本文对工程陶瓷ZrO2和高强度P钢进行了纵向超声振动珩磨试验,通过电镜 SEM观察分析了表面磨削特征,研究表明:纵向超声振动珩磨具有比普通珩磨较大的材料去除率,并且磨削表面光滑,粗糙度低。

In reference[ 1 ], through the comparative study of grinding characteristics in radial and longitudinal ultrasonic grinding, the cutting model of longitudinal ultrasonic cutting was established. And the theoretical formula of critical velocity was deduced. In order to validate the cutting model and study further surface microscopic feature, some experiments of longitudinal ultrasonic honing of engineering ceramics Zr02 and high strength P steel have been carried out. The surface microscopic features of workpieces were analyzed by means of SEM. The research results indicated that longitudinal ultrasonic honing can produce larger removal rate of material and smaller surface roughness than common honing.