Patent ID: 9327331
Filing Date: 2016-05-03
CPC Classification: B21D

Claim Text:
1. A method of forming a hem on a sheet metal panel comprising: placing the panel in a first part of a hemming tool, wherein the panel has a flange that extends inwardly from a body portion of the panel; advancing a second part of the hemming tool toward the first part and engaging a distal end of the flange with a stop that prevents the distal end of the flange from moving inwardly and compressing the flange, wherein an intermediate portion of the flange between the body portion and the distal end is formed inwardly; disengaging the stop from the distal end of the flange after a first portion of the flange is formed to extend parallel to the body; and forming a second portion of the flange that is contiguous with the distal end of the flange to extend parallel to the panel after the first portion of the flange is formed.