Burr Suppression Using Sharpened Pcd Cutting Edge by Ultraviolet-Ray Irradiation Assisted Polishing

Optimized microscopic cutting edge designs could bring a significant improvement to high performance cutting. This article presents the application of newly developed cutting edge preparation technology to sharpen cutting edges of poly-crystalline diamond (PCD) tools with sub-micro meter radii. This new polishing method is called ultraviolet-rays irradiation assisted polishing. Materials would be removed by a mechano-chemical removal process combined with the photochemical reaction of ultravioletrays. After preparation of the sharp edge, the cutting edge radius became smaller than diamond grain size. Several cutting tests showed burr reduction in the cutting of non-ferrous metals and carbon fiber reinforced plastics (CFRP) owing to the decrease of normal cutting force by using the sharpened PCD cutting tool.