Study on High-precision and High-Efficiency Cutting of Spheroidal Graphite Cast Iron for Die and Mold

Abstract

This research aims at construction of the high-precision and high-efficiency machinery of the spheroidal graphite cast iron currently used as die and mold material for automobile bodies. In this paper, the cutting speed dependence of tool wear ration was investigated using the high content type cBN sintered compact tool. At more than 13.3 m/s, it showed clearly for sufficient improvement in the tool life to be possible. Moreover, a tool wear mechanism was also examined through the measurement of cutting temperature and observation of a tool damage.