Improvements in the matrix procedures of laminar metal parts. (Machine-translation by Google Translate, not legally binding)

摘要

Improvements in the processes of laminating metallic pieces, essentially characterized by subjecting a strip of metal sheet of appropriate width and thickness to a first central drilling operation by means of a cylindrical punch and two lateral embossments, obtained by means of identical punches of section. T-shaped, in a symmetrical and opposite arrangement with respect to the longitudinal plane of the band, defining in it two rectangular and transverse recesses in opposition and a toothing on the free lateral edges. (Machine-translation by Google Translate, not legally binding)