Roll forming process and apparatus for making ribs in strip...

Details Roll forming process and apparatus for making ribs in strip... Roll forming process and apparatus for making ribs in strip...

B - Operations, Transporting

21

D

113/51

B21D 5/14 (2006.01) B21C 37/12 (2006.01) B21D 13/04 (2006.01) B21D 13/10 (2006.01)

Patent

CA 1318187

Roll Forming Process And Apparatus For Making Ribs In Strip Material Abstract of the Disclosure A roll forming process is described wherein longitudinal areas of curvature are formed in strip material between longitu- dinal areas of narrower width, the areas of curvature being bowed downwardly from the center toward the longitudinal flat areas. As the strip material is fed progressively through roll forming stations, the longitudinal areas of curvature are formed into areas of lesser curvature and finally flattened to provide strip material having relative flat areas separated by substan- tially rectangular ribs. The process is one in which areas of curvature are provided to initially gather strip material for use in forming the sides of one or more ribs with little or no thinning of the strip material.

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