Inventors:
Donald Melbinger - Cerritos CA, US
International Classification:
B21D 53/26
B23P 17/00
US Classification:
2989435, 298943, 29894323, 29894324, 29894325, 29894354
Abstract:
Methods for forming a soft lip for a wheel rim are disclosed herein. The wheel rim may be a cold-formed, spun-formed, or rolled-formed cylindrical blank, wherein the blank includes an upturned outer edge. As the blank is spun, a blunting roller lowered to contact the upturned outer edge to blunt the outer edge into a work-strengthened annular bead, and finish off the external surface of the annular bead to form a soft lip.