Patent ID: 6711928
Filing Date: 2004-03-30
Classification: B21C,B21D,B21J,B23P,B24B,C21D,Y10T

Abstract:
Tooling for working a structure to improve the fatigue strength at a selected location in said structure, said structure comprising a first surface, a second surface, and a body therebetween, said tooling comprising:a first indenter, said first indenter comprising a contacting end for engagement with and deformation of a pre-selected portion of said first surface of said structure to impart a residual stress profile in said body of said structure, said contacting end of said first indenter comprising (a) a first portion having a shaped surface profile effectively approximating a dimple shape in said first surface of said structure produced by the application of a substantially uniform pressure profile on said pre-selected portion of said first surface of said structure, and (b) a second portion comprising a downwardly projecting center portion.