METHOD OF MANUFACTURING IMPELLER OF CENTRIFUGAL ROTARY MACHINE AND IMPELLER OF CENTRIFUGAL ROTARY MACHINE
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United States of America Patent
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Issued Date -
Dec 16, 2010
app pub date -
Feb 22, 2010
filing date -
Jun 10, 2009
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Abandoned
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Abstract
A method of manufacturing an impeller of a centrifugal rotary machine, the impeller being formed in a substantially disk shape and including a passageway curved to follow the axial direction in an inner peripheral side of the impeller and to follow the radial direction as it goes to an outer peripheral side thereof, the method includes: a first passageway forming step of setting a rotation center at a position on one side of the axial direction where a curvature center of the passageway is located relative to a disk forming an external shape of the impeller, and rotating a processing tool about the rotation center relative to the disk so as to form at least a part of the passageway from a position which is an inner peripheral end of the passageway of the disk toward the outer peripheral side.
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