EP 1875976 B1 20090107 - Self-piercing riveting unit
Title (en)
Self-piercing riveting unit
Title (de)
Stanznieteinheit
Title (fr)
Unité de rivetage auto-poinçonnante
Publication
Application
Priority
DE 102006031465 A 20060707
Abstract (en)
[origin: EP1875976A1] The punching rivet unit for riveting of a steel piece of a body in white, comprises a rivet stamp (11) stroke-movably propelled in a rivet channel (10), a supply mechanism joined in the rivet channel for cyclic supply of a half hollow punching rivet (3), and a sensor arrangement (17, 18) for measuring the thrust force on the punching rivet and the stroke distance of the rivet stamp. Before riveting, the punching rivet is locked in the rivet channel in displaceably fixed manner. The punching rivet is plastically shaped in a part area with increased stroke distance of the rivet stamp. The punching rivet unit for riveting of a steel piece of a body in white, comprises a rivet stamp (11) stroke-movably propelled in a rivet channel (10), a supply mechanism joined in the rivet channel for cyclic supply of a half hollow punching rivet (3), and a sensor arrangement (17, 18) for measuring the thrust force on the punching rivet and the stroke distance of the rivet stamp. Before riveting, the punching rivet is locked in the rivet channel in displaceably fixed manner. The punching rivet is plastically shaped in a part area with increased stroke distance of the rivet stamp. The power/stroke-distance ratio is detected in the locked position of the punching rivet synchronously for the plastic deformation of the sensor arrangement. The sensor arrangement is downstream to a control mechanism (19, 20) releasing the punching rivet outside to a range of tolerance of the determined power/stroke-distance ratio as junk removals and within the range of tolerance for the bonding procedure. The rivet punch is tapered in the cross section at its front surface cooperating with the punching rivet, and has projections (15) pressed with the plastic deformation into the locked position of the punching rivet increasingly into the rivet material. The projection is formed as ball segment-, pyramid- or conical form.
IPC 8 full level
B21J 15/28 (2006.01); B21J 15/02 (2006.01); G01N 3/40 (2006.01)
CPC (source: EP)
B21J 15/025 (2013.01); B21J 15/28 (2013.01); B21J 15/285 (2013.01)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 1875976 A1 20080109; EP 1875976 B1 20090107; DE 102006031465 A1 20080110; DE 502007000361 D1 20090226
DOCDB simple family (application)
EP 07011429 A 20070612; DE 102006031465 A 20060707; DE 502007000361 T 20070612