Device for mechanically attaching superimposed joining parts by rivets, has counter-stamping unit exerting reaction force on part to counteract stamping force, and fluid system pressurizing counter-stamping unit with variable fluid pressure

摘要

The device (1) has stamping parts (16) arranged over parts to be joined (10, 12) by insertion of a rivet (14), and subjecting the rivet in a gumption phase with a stamping force. A die (18) is arranged below the joining parts and provided with a counter-stamping unit (18.2) that is movably guided in a fixed die unit (18.1). The counter-stamping unit exerts a reaction force on one of the joining parts for counteracting the stamping force. A fluid system (20) i.e. pneumatics system, pressurizes the counter-stamping unit with a variable fluid pressure for generating the reaction force.