Experimental Study of Chip Shrinkage in Turning Titanium Alloy VT6

Abstract

The article proposes an analysis of the study of turning a titanium-based alloy used for the manufacture of surgical implants. The main focus is on machinability problems associated with the choice of rational cutting parameters, which determine the quality and durability of pedicle screws. The conclusion is made about the need for research aimed at ensuring maximum performance and application of practical data for the manufacture of medical implants. To carry out experimental studies, non-free cutting of a titanium alloy bar was performed with a cutter fixed in a turning dynamometer. Graphs of cutting forces versus cutting speed and feed were used to select an effective combination of machining parameters. A thermal imaging camera was used to evaluate the effect of processing parameters on the temperature of the processed sample. Conclusions are drawn about the dependence of the coefficients of longitudinal and transverse chip shrinkage on the processing parameters. The results of the research analysis show that when turning titanium alloy VT6, the coefficient of transverse chip shrinkage, which characterizes the broadening with increasing cutting speed, remains unchanged. The goals of further research aimed at clarifying the optimal cutting conditions for turning transpedicular fixation screws from VT6 were determined.