METHOD FOR MANUFACTURING FAN ROTOR
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United States of America Patent
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Issued Date -
Dec 25, 2014
app pub date -
Aug 9, 2013
filing date -
Jun 20, 2013
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An exemplary method for manufacturing a fan rotor includes the following steps. First, a discoid-shaped metal sheet is provided. Second, the metal sheet is stamped such that the stamped metal sheet includes a hub at a middle thereof, a blade-portion spaced from and surrounding the hub, and supporting bars interconnecting the hub and the blade-portion. The blade-portion includes outer peripheral blades adjacent to each other. Third, a free end of each blade is curled up by force applied along a direction substantially perpendicular to a plane of the blade-portion. Finally, each blade is bent downward about an axis coinciding with a portion of one side of the blade that connects with an inner periphery of the blade-portion.
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