Abstract
This paper presents of the influence on vibration of Co28Cr6Mo medical alloy machined on a CNC lathe based on cutting parameters (rotational speed, feed rate, depth of cut and tool tip radius). The influences of cutting parameters have been presented in graphical form for understanding. To achieve the minimum vibration, the optimum values obtained for rpm, feed rate, depth of cut and tool tip radius were respectively, 318 rpm, 0.25 mm/rev, 0.9 mm and 0.8 mm. Maximum vibration has been revealed the values obtained for rpm, feed rate, depth of cut and tool tip radius were respectively, 636 rpm, 0.1 mm/rev, 0,5 mm and 0.8 mm.
Highlights
Vibration is a repetitive, periodic, or oscillatory response of a mechanical system
The rate of the vibration cycles is termed “frequency.” Repetitive motions that are somewhat clean and regular, and that occur at relatively low frequencies, are commonly called oscillations, while any repetitive motion, even at high frequencies, with low amplitudes, and having irregular and random behavior falls into the general class of vibration [1]
Ghani [13] presented a study of tool life, surface finish and vibration, while turning nodular cast iron using ceramic tool. They found that surface finish was to be almost constant with the progression of the flank wear under different cutting conditions Bonifacio [14] presented a study on correlating tool wear, tool life, surface roughness and tool vibration in finish turning with coated carbide tools
Summary
Periodic, or oscillatory response of a mechanical system. The rate of the vibration cycles is termed “frequency.” Repetitive motions that are somewhat clean and regular, and that occur at relatively low frequencies, are commonly called oscillations, while any repetitive motion, even at high frequencies, with low amplitudes, and having irregular and random behavior falls into the general class of vibration [1]. The high degree of correlation between selected band energy, energy entropy, time-domain features and tool wear are observed It shows the effectiveness of the proposed model. They found that surface finish was to be almost constant with the progression of the flank wear under different cutting conditions Bonifacio [14] presented a study on correlating tool wear, tool life, surface roughness and tool vibration in finish turning with coated carbide tools They concluded that the feed didn’t influence the vibrational signal and had a little effect on surface roughness. Thomas [15] studied the effect of tool vibration on surface roughness during lathe dry turning process on mild carbon steel samples at different levels of speed, feed, depth of cut, tool nose radius, tool length and work piece length. A computer numerical controlled (CNC) machine is used for machining Co28Cr6Mo medical alloy in the present study
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