単板切削現象の変化に及ぼすプレッシャバー-ナイフ-被削材相互の位置関係の影響(解析と実験)(X) : 工具すくい面の切削応力分布および摩擦係数の変化に及ぼすプレッシャバーの先端断面形状とすくい面への二次圧縮作用位置の影響(菅原民生・椛島成治・福山豊・樋口精一郎教授退官記念)

概要

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(1) The distributions of the frictional (τ) and normal (σ) stresses on a rake face can be expressed by Eq.(11). Using the values of the coefficients (α_F, α_N) and the exponents (β_F, β_N) in Eq.(10), the variations of these stress distributions with the different cross-sectional areas of the pressure-bar edge and the workpiece conditions were clarified (Fig. 5). (2) The frictional coefficient (μ) is constant on a rake face, not only when cutting with various workpieces but also when cutting with various pressure bars. It was determined that μ changes with the cross-sectional areas of the pressure-bar edge and the workpiece conditions (Fig. 6). The degree of loose-side checks occurring in the veneer decrease and the radius of curvature of the veneer increase with decreases in μ (Fig. 6).
2005-03-28