Spinning apparatus and spinning method
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United States of America Patent
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Mar 16, 2021
Grant Date -
Jan 24, 2019
app pub date -
Jan 11, 2017
filing date -
Jan 14, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
A spinning apparatus for decreasing by spinning a thickness of a portion of a tube material having a uniform thickness except at a first axial end portion is disclosed. The spinning apparatus includes a spindle-side chuck having a conical concavity and a mandrel. The mandrel has a mandrel-side chuck formed in a form of a conical convexity corresponding in configuration to the conical concavity of the spindle-side chuck and a cylindrical portion for supporting the tube material. The spinning apparatus further includes a spinning roll for decreasing the thickness of the tube material by pressing the spinning roll against the tube material when the tube material is supported by the cylindrical portion of the mandrel.
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