METHOD OF PRODUCING A DENSELY PERFORATED TIPSHELL FROM FLAT GEOMETRY

摘要

A manufacturing method includes providing a flat sheet perforated with holes, which have respective initial shapes and respective axes of symmetry. The axes of symmetry of the holes point toward a common origin within the flat sheet. The perforated flat sheet is deep-drawn into a cylindrical shell using a punch centered about the common origin, including deforming the holes from the initial shapes into respective predefined final shapes having different aspect ratios relative to the initial shapes.