Sheet metal fan blade forming process

Details Sheet metal fan blade forming process Sheet metal fan blade forming process

B - Operations, Transporting

63

B

26/150

B63B 19/00 (2006.01) B23P 15/02 (2006.01) F04D 29/38 (2006.01)

Patent

CA 1077249

ABSTRACT A method of making a sheet metal fan blade having a flattened mounting pad. The blade is to be attached to a flat spider arm of a fan hub. According to the method, a fan blade blank workpiece of any desired outline (such as rectangular, trapezoidal, etc.) is simultaneously provided with a longitudinally running rib and a flat pad portion by stamping. The workpiece is generally arcuate in transverse cross-section. In this manner, the outline of the blade is not distorted by stamping the blank to form the flat mounting pad.

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