Abstract
This paper discusses the stability of high-speed machining processes. The problem of harmful vibrations can usually be detected based on measured signal forces. Nevertheless, the chatter effect may be unrevealed and hence some alternative approaches of signal monitoring must be taken to detect it. In the discussed case of machining, process stability is determined by means of stability diagrams. The measured milling force components are investigated by various signal analysis methods. In addition to this, the analysis also uses recurrence plots, recurrence quantifications, composite multi-scale-entropy and as well the statistical approach. Results obtained by the different methods are presented and discussed.
Highlights
Nickel alloys are often used in different branches of industry, from medical to aerospace industries
The selection of cutting depth and spindle rotational speed is made via Stability Lobes Diagram (SLD) which can be applied in high-speed machining (HSM) processes to optimize the maximum depth of cut at the highest available spindle speed
The main aim of the present paper is to investigate the effect of cutting speeds on cutting stability via multiscale entropy and the recurrence quantification technique
Summary
Nickel alloys are often used in different branches of industry, from medical to aerospace industries. The cutting forces that depend on the tool geometry, material properties, feed rate and cutting speed can have a large amplitude, which leads to faster tool wear These vibrations of the tool are known as chatter [39, 40]. The primary objective of the paper is optimal selection of milling parameters (cutting speed and surface inclination angle), as this will ensure minimal cutting force values and increased process efficiency at the same time. An interesting contribution to the problem is a numerical and experimental study of the dynamics of flank milling operations at low cutting rates presented in [28].The paper focuses on both the properties of cutting vibratory phenomena and their impact on the roughness of the machined surface.
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