Thanks to its multiple usage areas, Ti6Al4V alloy is a highly preferred and researched material. Recently, with the development of additive manufacturing technologies, studies on this alloy have intensified. Additive manufacturing has recently become a very important alternative for designs that cannot be manufactured by traditional methods. Workpieces produced by additive manufacturing cannot be used directly in the areas of use. Because they may not have the desired features directly. Generally, various machining processes are applied after additive manufacturing. The most used of these processes are turning, milling and drilling. There are many reference studies on the processes of the parts produced with traditional methods. However, since the materials produced by additive manufacturing have different properties, they should be examined separately. In machining, cutting parameters, surface quality, tool life, labor costs, energy costs, geometric tolerances, etc. have a direct impact on many details. Microhole drilling is used in special fields (aerospace, defense, automotive, and medical). It is also a process that needs to be worked very carefully. Micro drills can break easily because they have very small diameters. In this study, cutting forces and vibration affecting tool life and quality were investigated. Ti6Al4V alloy produced with EBM was used in the study. Three different diameters (0.5mm, 0.6mm, 0.7mm) of micro drills were tested at different feed rates and different speeds in dry-cutting conditions. A 3-axis high-precision CNC workstation was used in the studies. Feed rates were chosen as 1, 2, and 3 mm/min. Three different spindle rotation speeds were tested (5000 rpm, 10000 rpm, and 15000 rpm).
Anahtar Kelimeler: Electron Beam Melting, Ti6Al4V, Vibration, Micro Drilling, Cutting Forces, Additive Manufacturing
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