High accuracy cutting is the area which is difficult to be automated. The reason is that the control of waveness and surface roughness is difficult, and the study on it is not sufficient. Such a status cause inefficiency of productivity and increase of demand for expert. Until now, the monitoring of surface roughness has been developed by acoustic emmission but is requires high price equipments. So it is required another monitoring method, which is to use cutting force signal. Cutting force signal requires low price equipments and is easily applicated in industry. To take advantage of this merits, it is required to be studied.
In this study, the creation process of a typical machined surface is treated here as a dynamic system. An investigation is carried out to establish a relationship between the characteristics of cutting force fluctuations that cause vibratory response of the tool-workpiece system and the formation of surface in face cutting by sintered carbide cutting tool. Cutting force is measured and analyzed in frequency domain. The power spectral densities of cutting force give a useful information in surface generation and it can be used to find out the control factor of surface roughness. The terms, PSD ratio ＆ Normalized spindle frequency PSD, are defined and when the value of power in spindle frequency is absolutely little but relatively large, it is obtained high accuracy surface roughness. The aim of this research is to find surface profile by measured and analyzed cutting force signals and method that the better surfaces are acquired. Finally, how to generate surface of good quality is acquired.
