Patent ID: 9643231
Date: 2017-05-09
CPC Classifications: B21D

Claim:
1. Method for producing flanged drawn members from a planar and/or pre-shaped plate using a drawing punch having at least one cutting edge or rounded portion, a retention member and a drawing die, wherein the drawing die has a rib region, a base region, a flange region and a support region for the plate, the method comprising the steps of: placing the plate on the support region of the drawing die; drawing the plate into a drawn member by introducing the drawing punch into the drawing die and cutting at the flange region; wherein the support region is constructed so as to be raised and fixed relative to the flange region; wherein the height difference between the support region and flange region corresponds at least to the wall thickness of the plate to be shaped; and wherein during the introduction of the drawing punch into the drawing die, the at least one cutting edge provided on the drawing punch moves into engagement with a rounded portion which is provided at the transition between the support region and flange region, or the at least one rounded portion provided on the drawing punch moves into engagement with a cutting edge provided at the transition between the support region and flange region so that regions of the plate which project beyond the flange region are separated during the drawing operation.