During turning operations, tool-part-chip contact causes wear to the cutting tool. The objective of this work is to study the wear of the clearance faces of tungsten carbide cutting tools during turning operations. Experimental tests on tool life for dry turning operations were carried out at four different cutting speeds, where the feed rate and the depth of cut are kept at constant values: 0.08 mm/rev for feed rate and 0.5 mm for depth of cut. An analysis of the influence of cutting parameters on the tools wear and consequently tool life (Τ) was presented, then the roughness of the machined surface Ra and the morphology of the chips produced were studied. This study makes it possible to identify that the wear mechanisms and the tool life are strongly linked to the roughness of the machined surfaces and to the morphology of the chips produced during the turning operations.

During turning operations, tool-part-chip contact causes wear to the cutting tool. The objective of this work is to study the wear of the clearance faces of tungsten carbide cutting tools during turning operations. Experimental tests on tool life for dry turning operations were carried out at four different cutting speeds, where the feed rate and the depth of cut are kept at constant values: 0.08 mm/rev for feed rate and 0.5 mm for depth of cut. An analysis of the influence of cutting parameters on the tools wear and consequently tool life (Τ) was presented, then the roughness of the machined surface Ra and the morphology of the chips produced were studied. This study makes it possible to identify that the wear mechanisms and the tool life are strongly linked to the roughness of the machined surfaces and to the morphology of the chips produced during the turning operations.

In many manufacturing processes particularly during metal removing processes, it is sometimes desirable and often necessary to have information on the quantity of heat produced and therefore the increase in temperature and its distribution, heat generated at the tool-workpiece interface during machining is an important factor to solve the metal cutting problems such as dimensional accuracy, the surface integrity and the life of the tool. In the present work, the evolution of the cutting temperature was studied using a combined experimental and numerical approaches; the thermocouple method was used to measure the cutting temperature for turning operations of the steel AISI 1060. 3D cutting model was used to simulate and predict the thermal phenomenon of the heat propagation in the cutting tool, using digital COMSOL simulation software. Based on a comparison between the results of two approaches; numerical and experimental, it was found a correspondence to go up to 96%, taking into account the maximum temperature.

Optimize the process and save time and cost are the main motivations for cutting tools modeling. Thus, the modeling of the drilling is a means for reducing the time and cost of designing new drill geometries. This work aims to propose thermal models in 2D and 3D in order to estimate the drill cutting temperature with and without metal coating during a drilling operation by using the digital simulation software Comsol Multiphysics. The results of thermal simulations for both types of drills with and without metal coating obtained underlines the importance of particular coatings TiN in the propagation of heat and the cutting temperature elevation.