Patent ID: 6021657
Filing Date: 2000-02-08
Classification: A01K,B21D

Abstract:
Method of forming a metal wave curb for a cow stand of a milking parlor, from a flat sheet metal strip that has a longitudinal direction and a transverse direction and having transversely opposite edges that extend in the longitudinal direction, wherein the strip is bent in alternate curves in the longitudinal direction so as to form a succession of alternate arcuate bights; the method comprising:bending the metal strip, at each edge, to form respective edge bends of at least 90 degrees, with both edges being bent to the same side;forcing the edge bends flat to form opposed unitary beads which are bent over at least about 180 degrees with respect to said strip, thus creating a flat sheet metal workpiece with opposite unitary beads on its side edges;simultaneously forming, in a curve bending apparatus, a first pair of opposite arcuate bights having curve axes in the transverse direction of said sheet metal strip;moving the strip longitudinally in said curve bending apparatus; andsimultaneously forming a second pair of opposite arcuate bights in said sheet metal strip.