びびり振動切削による金属短繊維の製造  [in Japanese] Production of Fine Short-length Metal Fibres Using Self-excited Vibration of an Elastic Tool  [in Japanese]

金属短繊維は, 複合材料用基材など種々の用途をもつものと考えられているが, 既存の金属短繊維製造法はいずれも効率が悪く, コストも高い.本論文では, 旋削時に弾性切削工具にびびり振動を積極的に生じさせることにより極細の金属短繊維を製造する, 新しい「びびり振動切削法」を提案する.このびびり振動切削法によれば, 直径10〜250μm, 長さ0.5〜20mmの金属短繊維を, ほとんどすべての金属材料から直接, 安価に, 効率良く製造できる.びびり振動切削法における短繊維の生成機構についても実験により得られた結果をもとにその推定を行った.

Fine short-length metal fibres are considered to have various applications such as fibrous composite materials, but existing methods of producing such fibres are inefficient and costly. A new manufacturing process, named "Chatter Machining", of fine short-length metal fibres using self-excited vibration of an elastic tool in the lathe turning is proposed here. This Chatter Machining makes it possible to produce fine metal fibres, with diameter varying from 10μm to 250μm and with length from O.5 mm to 20mm, directly from most kinds of round met-al bar efficiently and inexpensively. The mechanism of fibre formation in Chatter Machining is described, based on experimental results.