Abstract
In this work, the analysis of the cutting speed and feed rate influence on tool wear and cutting forces in Ti6Al4V alloy dry machining is presented. The study has been focused on the machining in a transient state. The tool wear mechanisms, tool wear intensity and cutting forces evolution have been analyzed as a function of the cutting parameters. Experimental results show that the main cutting force amplitude exhibits a general trend to increase with both cutting parameters. Crater wear was more evident at high cutting speeds, whereas flank wear was present on the whole interval of the cutting parameters analyzed. Furthermore, the cutting speed shows a slightly higher influence on crater wear and the feed rate shows a higher influence on flank wear. Finally, several experimental parametric models have been obtained. These models allow predicting the evolution of crater and flank tool wear, as well as the cutting forces, as a function of the cutting parameters. Additionally, a model that allows monitoring the tool wear on the machining transient state as a function of the main cutting force amplitude has been developed.
Highlights
Titanium alloys are one of the most used commercial aerospace structural materials
The influence of the cutting speed and feed rate on the cutting forces and tool wear in dry machining of Ti6Al4V alloy has been analyzed
The study has been focused on the transient state machining, monitoring tool wear through the machining process with different cutting parameters and analyzing the cutting forces
Summary
Titanium alloys are one of the most used commercial aerospace structural materials. Their high strength to weight ratio, corrosion resistance at high temperature, high stiffness, good fracture toughness and fatigue resistance make titanium alloys an excellent alternative to steels and aluminum alloys in airframe and engine applications [1,2]. In this work, the analysis of cutting speed and feed rate influence on tool wear and cutting forces in Ti6Al4V alloy dry machining, during the transient state, has been carried out. Several experimental parametric models have been obtained These models allow predicting the crater and flank wear evolution, as well as the cutting forces, as a function of the cutting parameters in the transient state machining. A model that allows the tool wear monitoring as a function of the cutting force in the early instants of machining has been developed These models can provide understanding of the physical phenomena that occurs in the transient state under the studied conditions and as a result facilitate the comprehension of the obtained experimental results of this work
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