ホブ切り過渡現象の観察と切りくず生成機構の解明（第３報，切れ刃の切削終了点の位置と切りくず流動の関係）

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タイトル別名
  • Transient Phenomenon of Chip Generation and its Movement in Hobbing (3rd Report, The Relation of the Ending Point of Cut of Chip Movements)
  • 3rd Report, The Relation of the Ending Point of Cut to Chip Movements
  • 第3報, 切れ刃の切削終了点の位置と切りくず流動の関係

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説明

The degradation of tooth surfaces and the unusual tool wear sometimes occurs in dry hobbing. This paper investigates the transient phenomenon of chip generations and behavior in hobbing by using high-speed video camera. The location of the ending point of cut on a cutting edge influences chip movements at the take-off from the tooth flank. Many chips rotate around the fulcrum of the ending point of cut. Some chips produced with the regular cutting tooth flow to the opposite side frequently when the ending point of cut exists at the trailing side in the conventional hobbing. When the chips flow to the opposite side flank, though the chips do not jam into the space between tooth surface and cutter relief surface, the chips strike against the tooth surface. This phenomenon gives suggestions to the degradation of tooth surfaces. In the climb hobbing, the chip movements are similar to the case of the conventional hobbing. However, many chips flow away to the direction of the tool revolution because the both flanks facing each other guide chips at the root just after the end of cut.

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