C01 ナノ・マイクロステップ付き工具による工具 : 切りくず接触界面のトライボロジー制御(OS-12 ナノ加工と表面機能(1))

概要

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In machining, controlling the friction at the tool-chip contact area is an important factor. It is well known that microscopic textures on the solid surface often improve the frictional characteristics. Thus, microscopic textures fabricated on the tool rake face are expected to reduce the friction coefficient at the tool-chip interface. For this reason, using sputtering, photolithography and wet etching techniques, nano/micro-scale steps were fabricated on the tool rake face near the cutting edge where a produced chip makes a contact with the tool during machining. Orthogonal cutting experiments were carried out using the fabricated tools and the cutting forces were measured. As a result, it was found that the width of the steps and the distance from the cutting edge to the step had direct influences on the reduction of the friction coefficient.
2008-11-21