Patent ID: 7642481
Filing Date: 2010-01-05
Classification: B21D,Y10T

Abstract:
1. An apparatus for forming a stringer with a web having a desired corrugated configuration and extending between first and second flanges welded thereto, the apparatus comprising: a support structure; a strongback supported by the support structure, the strongback defining a corrugated contour surface corresponding to the desired corrugated configuration of the web; and a plurality of dies, each of the dies defining a forming surface corresponding to a portion of the contour surface of the strongback, the dies adjustably supported by the support structure and configured to be advanced toward the strongback to thereby form the web to the desired corrugated configuration between the contour surface of the strongback and the forming surfaces of the dies, wherein the strongback and dies are configured to receive the flanges in a predetermined configuration with the web such that the flanges can be welded to the web while the web is supported by the strongback and dies in the desired corrugated configuration.