Patent ID: 8230574
Filing Date: 2012-07-31
Classification: B21K,B23P,Y10T

Abstract:
1. A method for inserting a connecting element in a metal sheet the method comprising the steps of: providing a joining opening in the metal sheet with at least one edge profile on a first surface side of the metal sheet, the metal sheet having a hardness that is equal to or greater than a hardness of a connecting element; inserting a bolt-like or sleeve-like joining section of the connecting element into the joining opening provided in the metal sheet, so that the connecting element bears with an extended connecting element head section against another surface side of the metal sheet and projects with a partial length of the joining section over the first surface side of the metal sheet, and subsequent fixing of the connecting element in the metal sheet through plastic material deformation by applying a pressing force, wherein during pressing the joining section is plastically deformed to form anchoring areas extending into the at least one edge-side profile, and wherein the at least one edge recess has a bottom surface in the form of a beveled edge, which forms with a plane of the first surface side an acute angle, that opens into the joining opening.