ドリルの歩行現象について

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タイトル別名
  • On Walking Phenomenon of Drill
  • ドリル ノ ホコウ ゲンショウ ニ ツイテ

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抄録

We frequently observe the walking phenomenon of the conventional twjst drill in drilling operation. The mechanism of the phenomenon is not yet well known. The object of the present research is to observe various phenomenon about the walking. The main results obtained are as follows : 1. The chisel edge angle seems to have a considerable effect on the walking. 2. When the drill begins to walk, the thrust of the drill begins to decrease. 3. The drill point makes an elliptic motion due to walking.

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