年次大会
Online ISSN : 2424-2667
ISSN-L : 2424-2667
2017
セッションID: G0400405
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冷間据込み鍛造におけるねじりモーション付加による軸圧縮荷重の低減限界
*松本 良康 仁漢宇都宮 裕
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To reduce the axial forging load in cold upsetting process, torsional oscillation was superposed with axial forging load. A cylindrical aluminum workpiece was simultaneously compressed with a maximum speed of 0.1 mm/s in z direction and twisted with a maximum angular speed of 0.5 rpm around the z-axis at room temperature. In case of the aluminum workpiece with an initial aspect ratio (height/diameter) of 1.0, a maximum reduction in the axial load was found to be approximately 80% for a rotation/compression speed of approximately over 300 °/mm.

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