切削加工における加工硬化層の生成機構 : 第3報,切れ刃の丸みが加工硬化層に及ぼす影響(機械要素,潤滑,工作,生産管理など)

概要

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In the ultra-precision machining, the smaller the undeformed chip thickness is, the more the machined surface integrity is affected by the cutting edge roundness of the cutting tool. In this research, the work hardened surface layer was dealt with as an evaluation of the machined surface integrity and the effect of the mechanical factors on work hardening was investigated experimentally in orthogonal cutting. In the case of a rounded cutting edge, unlike a sharp one, it makes the generation mechanism of the work hardened surface layer complicated. Therefore, it is difficult to predict the depth of the work hardened surface layer by using the previously presented prediction equation for the sharp cutting edge. However, it is possible to predict it by using the ratio of the undeformed chip thickness to the cutting edge roundness. That is because the equivalent shear angle changes according to the ratio of the undeformed chip thickness to the cutting edge roundness.
社団法人日本機械学会の論文
2002-07-25