Honeycomb manufacturing method and product

Details Honeycomb manufacturing method and product Honeycomb manufacturing method and product

B - Operations, Transporting

21

D

13/1, 26/111, 11

B21D 47/00 (2006.01) B21D 21/00 (2006.01)

Patent

CA 1183311

HONEYCOMB MANUFACTURING METHOD AND PRODUCT ABSTRACT When conventional honeycomb structures are formed into cylinders, the inner wall made up of the inner edges of the individual honeycombs is circumferentially compressed and the outer wall made up of the outer edges of the honeycombs is circumferentially stretched. As a result, the height of the inner wall increases and the height of the outer wall decreases resulting in a bowing in of the central portion of the cylinder so that the cylinder assumes an hourglass shape. This bowing in can be avoided by corrugating the original ribbon core material in the manufacture of the honeycomb in such a manner that one longitudinal edge of the corrugated ribbon follows a wave form of an amplitude greater than the wave form defining the opposite longitudinal edge. When such formed ribbons are stacked and curved to form a cylindrical structure a the one longitudinal edge will be stretched and the opposite longitu- dinal edges will be compressed, resulting in an equalizing of the amplitudes of the respective wave forms defining these edges so that the lateral wall of the resulting cylindrical structure in a direction parallel to the axis of the cylinder is rectilinear.

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