Drilling Aluminum Alloy Using Small-Diameter Drills with Micro/Nanometer-Scale Textures(Machine Elements, Design and Manufacturing)

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  • マイクロ・ナノテクスチャを有する小径ドリルを用いたアルミニウム合金の穴あけ加工(機械要素,潤滑,設計,生産加工,生産システムなど)
  • マイクロ・ナノテクスチャを有する小径ドリルを用いたアルミニウム合金の穴あけ加工
  • マイクロ ナノテクスチャ オ ユウスル ショウケイ ドリル オ モチイタ アルミニウム ゴウキン ノ アナアケ カコウ
  • Drilling aluminum alloy using small-diameter drills with micro/nanometer-scale textures

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Abstract

This study aims to develop novel cutting tools that have either microscale or nanoscale textures on their surfaces. Texturing microscale or nanoscale features on a solid surface allowed us to control the tribological characteristics of the tool. In this report, the textures were applied to drills with the diameter of 0.5mm and drilling experiments of aluminum alloy were performed to evaluate the developed tools. The texture decreased thrust and its fluctuation range under the high feed rate conditions. This effect depended on the direction of the texture and lower thrust was observed when the texture was perpendicular to the chip flow direction rather than the parallel. The breakage resistance could be improved utilizing this phenomenon. These results indicate that the developed tool is effective as a drill for small holes.

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