Small Holes Fabrication on Soda Glass by Self-Elastic Polycrystalline Diamond Tool
This study describes a novel process to drill small holes in brittle materials such as glass, silicon and ceramic using a self-elastic polycrystalline diamond (PCD) drilling tool. In order to improve the surface roughness and reduce crack of the small holes, a new type of self-elastic PCD drilling tool equipped with vibration absorbing materials inside the housing was developed to fabricate small holes in glass in this study. The self-elastic PCD drilling tools could absorb the mechanical force by the vibration absorbing materials while the PCD tool penetrates into the small holes. Compared to conventional PCD drilling tools, the experimental results show that high-quality small holes drilled in glass can be achieved with cracking as small as 0.02mm on the outlet surface using the self-elastic PCD drilling tool.
W.B. Lee, C.F. Cheung and S. To
C. C. Cheng and D. Y. Sheu, "Small Holes Fabrication on Soda Glass by Self-Elastic Polycrystalline Diamond Tool", Key Engineering Materials, Vol. 516, pp. 516-521, 2012