Taper coupling structure and rotating machine
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United States of America Patent
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Dec 23, 2014
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app pub date -
Nov 18, 2010
filing date -
Feb 18, 2010
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Abstract
A taper coupling structure includes a groove, serving as a hollowed part, provided in a rear end surface of a hub. The groove is formed continuously in the circumferential direction and uniformly in the radial direction. In the state in which a taper shaft is fitted in the hub, the groove interferes with the taper shaft in the radial direction. An inner shell part, which is a portion on the inside of the groove in the radial direction, has a low radial rigidity because of the presence of the groove. For this reason, if a force is applied from the hollow portion of a flange part toward the outside in the radial direction, the diameter of the inner shell part is liable to be increased in the radial direction by elastic displacement (deflection).
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