Patent ID: 7594421
Filing Date: 2009-09-29
Classification: B23P,B60D,F16B,Y10T

Abstract:
1. A riveting die for the attachment of a bolt element to a sheet metal part having a tubular rivet section at one end thereof, having a central abutment element having a central post and a concavely rounded rolling surface surrounding said central post, a plurality of shaped parts surrounding said central abutment element and abutting against it, there being a shaping space formed between said shaped parts and said abutment element adjacent said central post and said rounded rolling surface, with said rounded rolling surface forming a base of said shaping space, said shaped parts having radially inwardly directed noses forming a sidewall of said shaping space, and said noses having lower sides which serve as abutment surfaces for the end face of said tubular rivet section of the bolt element.