1502 バインダレスcBN工具を用いた生体用チタニウム合金の高速ミーリング加工(S75-1 高速・高精度加工(1),S75 高速・高精度加工)

概要

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Milling tests were conducted in order to investigate the cutting performances of a binder-less PcBN tool in the machining of Ti-6Al-2Nb-1Ta (α-β type alloy) and Ti-15 Mo-5Zr-3Al (β type alloy), which are used as surgical implant materials. In milling of the α-β type alloy, some micro chippings on the rake face of the tool were observed as a typical pattern of tool damage. In the case of the β type alloy, however, there were not only micro chippings on the rake face, but also many micro-flakes on the flank face. The occurrence of micro-flakes on the flank face influenced the structural strength of the cutting edge, and finally caused it to fail. Therefore, the rate of tool damage in milling of the β type alloy was higher than that in milling of the α-β type alloy.
社団法人日本機械学会の論文
2006-09-15