SURFACE ROUGHNESS AND CHIP FORMATION ANALYSIS DURING SINGLE POINT CNC MACHINING OF TITANIUM ALLOY

Abstract

Titanium alloy grade 5 acquires less tool life and poor machinability relative to other materials. Surface roughness is one of the crucial economic factors for the enhancement of the tool wear while machining of the Ti6Al4V. The factors that cause this problem is the type of material to be machined, suitable condition and parameters such as cutting speed, feed rate, and depth of cut during machining the work piece. The research objective is to investigate how to surface roughness and surface finish varies related to distinctive cutting speeds along with varying the tool coatings, as well as to study the chip geometry and characteristics during machining. For this purpose three types of inserts, uncoated, single coated and multi-coated were used and analyze the results by changing tool coating. A recently created topography was researched and compared against references at distinctive cutting conditions. Chip geometry and morphology were believed to provide information about the chip formation mechanism.