3次元分子動力学法を用いた微細加工機構の解析 : 工具-被削材間の相互作用および環境温度が表面粗さに及ぼす影響

概要

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We describe the effects of temperature and interatomic force interactions between tool and workpiece on the atomic-scale cutting mechanism, by means of molecular dynamics simulation. The interatomic force interaction between tool and workpiece is assumed to be derived from the Morse potential function. Molecular dynamics simulations of the cutting process using a rigid pin tool were carried out, changing the temperature and the values of Morse potential parameters γ_0, D and α. The increase in the potential parameters D and α brought about the positive effect of surface roughness, but the increase in the parameter γ_0 and temperature brought about the negative effect of surface roughness. Chip formation and side flow resulted due to the collision force between tool and workpiece, which lead to temperature increase of the workpiece. The surface of workpieces observed experimentally in microscale cutting was similar to that in atomic-scale cutting by molecular dynamics simulation.
一般社団法人日本機械学会の論文
1996-10-25