微小径エンドミル加工における溝加工精度に関する研究 (第1報)

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書誌事項

タイトル別名
  • Investigation of geometric groove accuracy in micro end milling (1<sup>st</sup> Report)
  • 微小径エンドミル加工における溝加工精度に関する研究(第1報)工具径に等しい溝幅加工における溝位置誤差と溝曲がり
  • ビョウショウケイ エンドミル カコウ ニ オケル ミゾカコウ セイド ニ カンスル ケンキュウ(ダイ1ポウ)コウグケイ ニ ヒトシイ コウハバ カコウ ニ オケル コウ イチ ゴサ ト コウ マガリ
  • Investigation of geometric groove accuracy in micro end milling (1st Report)
  • —Groove position error and groove warp in tool-width milling—
  • —工具径に等しい溝幅加工における溝位置誤差と溝曲がり—

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抄録

Square end mills of a small diameter are often used in micro end milling for making rectangular micro grooves. However, they are inevitably very flexible during milling, and it brings about poor machined accuracy on workpieces. In this paper, “groove warp” on a workpiece is discussed experimentally according to analyze the high frequency cutting force measured during tool-width milling with square end mills of 0.1mm in diameter. As a result, it is made clear that the resultant cutting force compels to deflect cutting edges even when they are situated at a rotating angle θ=0 or 180 deg., where position accuracy of both side walls are decided respectively, although the depth of cut on each cutting edge is negligible small. Therefore, the tool axis is deviated during transient milling from a contact start to the feed inside a tool radius, and the tool gets starting elastic recovery in the distance inside a tool radius from the end face of a workpiece. Therefore, the larger normal cutting force increases, the poorer groove accuracy deteriorates.

収録刊行物

  • 精密工学会誌

    精密工学会誌 79 (2), 176-181, 2013

    公益社団法人 精密工学会

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