405 低温化によるAl切削状態の改善(OS3-2 除去加工と計測の新技術)(OS3 加工新技術)

概要

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Cryogenic cooling with liquid nitrogen (LN2) is performed to aluminum cutting. Three conditions are tested; dry cutting at room temperature, cutting with LN2 jet and cutting prechiled workpiece soaked in LN2. As a result, it is found that, at low cutting speed, cutting process goes to unstable, and rough surface is generated at any tested condition. At high cutting speed, prechiled workpiece have lower surface roughness compared with other two workpieces obtained from cutting at room temperature and with LN2 jet, although there are no remarkable differences between latter two conditions. It is shown that nonexistence of remained edge between tool paths in workpiese surface at cryogenic condition brought about the improvement of surface roughness.
一般社団法人日本機械学会の論文
2001-09-25