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Research of Tool Parameter Design and Improvement of PCD Drill Machining CFRP

This paper presents a design idea of PCD tool drilling CFRP and analysis of experiment of two types PCD tools machining CFRP. Firstly, parameters of PCD drill including cutting edge type, clearance angle and two point angles were improved by the mean of surveying variation of axial load values and quality of CFRP hole exit. Secondly, two types of burrs were defined from aspects of burr generated mechanism by observing plenty of burr pictures. Lastly, making use of MATLAB software, function between axial load and hole numbers were ensured by data fitting in tool life analysis.