CUTTING OIL FOR CUTTING TOOL COATED WITH HARD CARBON THIN FILM, AND CUTTING TOOL COATED WITH HARD CARBON THIN FILM

摘要

PPROBLEM TO BE SOLVED: To provide a means enabling a highly accurate and highly effective processing aiming at elongation of lifetime of a cutting tool. PSOLUTION: The cutting oil for a cutting tool coated with a hard carbon thin film contains a fatty acid ester-based ash-free friction controlling agent and/or an aliphatic amine-based ash-free friction controlling agent. Amount of a hydrogen atom contained in a thin hard carbon film 3 covering the whole surface of a cutting edge 2 of a drill 1, which is a cutting tool coated with a hard carbon thin film to be used for a cutting work in the presence of the cutting oil for a cutting tool coated with a hard carbon thin film, is not more than 1 atom%. PCOPYRIGHT: (C)2005,JPO&NCIPI