Fundamental Research on Fullerene as an Additive of Cutting Oil in Hobbing on MQL System

摘要

In this study, the cutting performance of fullerene as an additive for MQL hobbing were investigated regarding the flank wear and crater wear of (Al, Ti)N-coated tool, and finished surface roughness by changing the cutting speed. Experiments were conducted by simulating hobbing by fly tool cutting on a milling machine. The following points were clarified; (1) Fullerene decreases the flank wear, crater wear and finshed surface roughness compared with the results by conventional cutting oil for MQL, particularly, at the high cutting speed of 159 m/min. (2) The reason why fullerene improves tool wear and finished surface roughness is suggested to be likely due to the formation of a transfer film at the contact region between cutting tool edge and work material. And also the presence of spherical fullerene molecules may act as tiny bearings which facilitate sliding.