METHOD OF FORMING A DRAWN CUP WITH UNDERCUTS

摘要

A method for manufacturing a bearing ring is provided. The method includes punching out a blank from sheet metal. A radially extending groove is formed in the blank. The blank is stamped in a cup-shaped die which creates an axially extending side wall and a bottom wall, with a first undercut being formed by the radially extending groove located at a juncture between the side wall and the bottom wall at a first axial end portion of the bearing ring. A second axial end portion of the side wall is thinned. The second axial end portion is then bent creating a flange with a second undercut located at a juncture between the flange and the side wall.

主权项

1. A method for manufacturing a bearing ring, comprising:
punching out a blank from sheet metal; forming a radially extending groove in the blank; stamping the blank in a cup-shaped die and creating an axially extending side wall and a bottom wall, with a first undercut formed by the radially extending groove located at a juncture between the side wall and the bottom wall at a first axial end portion of the bearing ring; thinning a second axial end portion of the side wall; and bending the second axial end portion and creating a flange with a second undercut located at a juncture between the flange and the side wall.