Deep bottom rim manufacturing method, deep bottom rim and vehicle wheel for commercial vehicle attached to deep bottom rim

摘要

The present invention relates to a method for manufacturing a deep rim for a vehicle wheel of a commercial vehicle, and a deep rim. The rim includes an inner rim flange 11 and an outer rim flange 20, an inner steep taper bead sheet 12 and an outer steep taper bead sheet 19, and an inner side between the rim deep bottom and the steep taper bead sheet having a deep base 13. A plurality of areas forming a deep side 14 and an outer deep side 15, one of the areas being provided as a disk mounting area A for a vehicle disk 50; It has at least one partial area with a reduced wall thickness relative to other areas. According to the invention, at least one of the steeply tapered bead sheets 12, 19 and preferably both bead sheets 12, 19 exceed 20% of the wall thickness of the area provided as the disc mounting area A. It has a section in which the wall thickness has been reduced, and it is understood that the wall thickness reduction is produced in one of the forming steps (FIG. 3).