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Kamdani, Kamaruddin
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document
The effect of drill point geometry and drilling technique on tool life when drilling titanium alloy, Ti-6Al-4V
Abstract
An experimental investigation was conducted to determine the effect of drill point geometry anddrilling methods on tool life and tool wear in drilling titanium alloy, Ti-6Al-4V. Uncoatedcarbide drills with different type of geometry under various cutting speeds and drilling methodswere used in the investigation. Experimental results revealed that both the drill geometry anddrilling techniques affect the tool wear and tool life performance when drilling Ti-6Al-4V. It wasalso found that peck drilling outperformed direct drilling in terms of tool life all cutting speedsinvestigated. Non uniform wear and chipping were the dominant failure mode of the tools testedunder most conditions.