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On micro machining, feed rate has great influence on the quality of the generated surface. Therefore, the present work aims to analyze the influence of the feed rate on the surface roughness in the Ti6Al4V alloy micro milling. For this, a 390 μm diameter micro tool, AlCrN coated, was used and tests were carried out with 19 different conditions, varying the feed rate from 0.05 to 5 µm/tooth, in steps of 0.05 µm/tooth, maintaining a constant cutting speed of 25 m/min, axial depth of cut of 40 µm, radial depth of cut of 390 µm. The roughness parameters Ra, Rq, Rz, Rt, Rsk and Rku were measured. The results showed that feed values from 0.20 to 0.30 μm/tooth provided better surface finishing, this feed corresponding to 20–30% of the value of the cutting-edge radius.

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Feed Influence on Different Surface Roughness Parameters When Micro Milling Ti6Al4V

  • 章节

  • 发表日期：

    2025年

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  • Aline Gonçalves dos Santos,
  • Déborah de Oliveira,
  • Milla Caroline Gomes,
  • Márcio Bacci da Silva

摘要

On micro machining, feed rate has great influence on the quality of the generated surface. Therefore, the present work aims to analyze the influence of the feed rate on the surface roughness in the Ti6Al4V alloy micro milling. For this, a 390 μm diameter micro tool, AlCrN coated, was used and tests were carried out with 19 different conditions, varying the feed rate from 0.05 to 5 µm/tooth, in steps of 0.05 µm/tooth, maintaining a constant cutting speed of 25 m/min, axial depth of cut of 40 µm, radial depth of cut of 390 µm. The roughness parameters Ra, Rq, Rz, Rt, Rsk and Rku were measured. The results showed that feed values from 0.20 to 0.30 μm/tooth provided better surface finishing, this feed corresponding to 20–30% of the value of the cutting-edge radius.