Patent ID: 6073347
Filing Date: 2000-06-13
Classification: B21D,B60B,Y10T

Abstract:
A method for manufacturing a full faced steel wheel having a steel rim, a steel disc, and a plurality of vent holes in the disc, comprising rolling a steel rim to provide an inner flange, an inner beadseat, a central section, and an outer beadseat having an outer edge, including rolling the inner surface of the outer beadseat to a predetermined angle and to a predetermined inner diameter at its outer edge; stamping a full-faced steel disc, including stamping an outer flange having an inner surface extending radially inward, a radius at the bottom of the outer flange inner surface and a supporting circumferential beadseat area extending smoothly away from the radius and inwardly at a corresponding matching angle to the predetermined angle of the inner surface of the outer beadseat; embossing the plurality of vent holes in the steel disc, including extending said supporting beadseat area inwardly at the same corresponding matching angle at the outer periphery of each vent hole a distance greater than the circumferential beadseat area extends inwardly at positions about the wheel between the vent holes, thereby forming inwardly extending intermittent supporting areas, further including providing the edge of the outer surface of said intermittent supporting areas with an outer diameter slightly less than the said predetermined inner diameter at the outer edge of the rim; assembling the rim to the disc by forcing and guiding the inner surface of the rim outer beadseat first over the outer surface of the intermittent supporting areas at the vent hole outer peripheries and then over the outer surface of the disc beadseat area a predetermined distance, including expanding the rim outer beadseat at certain positions about its periphery during the assembly; and applying a weld to the rim and disc at the rim outer beadseat outer edge.