The Effect of the Cutting Edge Geometry on the Formation of the Plastic Deformation Area when Cutting Titanium Alloy OT4

Research into the influence of geometrical parameters of cutting tools on the machining process is important due to the need to develop advanced tools for achieving high levels of precision, quality and efficiency in modern engineering.  Under the action of the tools, deformation of the workpiece material occurs; chips and surface layer of the machined part are formed. The latter determines the performance of the part, and of the structure element, in which the part is used. The article presents the results of the experimental study of cutting titanium alloy OT4 by tools with various geometrical parameters.  The research was carried out at low speeds using free orthogonal and oblique cutting schemes. To ascertain the effect of the tools geometrical parameters on the cutting process, the intensity of the plastic shear strain was determined.  The magnitude of the strain was evaluated using the method of digital image correlation. The effect of the rake angle and the cutting edge inclination were assessed. The results obtained can be used to design modern metal cutting tools.

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