Effect of Workpiece Material Properties on Micro-cutting Process

摘要

In the machining of mirror-like surfaces, a typical cutting depth of a few micrometers is common. With such a small depth of cut, the chip formation takes place inside individual grains of a polycrystalline materials. In this paper, an orthogonal cutting of a copper single crystal was performed in order to investigate the dependency of the cutting deformation and the machined surface quality on crystallographic orientations of the substrate materials. The experimental results show that the crystallographic orientations of the workpiece material exert a great influence on the shear angle and the surface quality. The measured values of the machined surface roughness correspond well with the experimental data of the shear angle.