Patent ID: 6240613
Filing Date: 2001-06-05
Classification: B21J,B23P,Y10T

Abstract:
A rivet setting tool, comprising:a pulling head including a hydraulic piston disposed within a housing, said piston being connected to a jaw case such that said jaw case engages a rivet mandrel upon activation of said pulling head, whereby continued travel of said hydraulic piston supplies force to effectively set the rivet;a hydraulic pressure source connected to said housing by a hydraulic passage;a hydraulic pressure detection mechanism for detecting a hydraulic pressure in said hydraulic passage; andan electronic controller connected to said hydraulic pressure detection mechanism for controlling said hydraulic pressure source in response to signals received from said hydraulic pressure detection mechanism, said electronic controlled providing an output signal to said hydraulic pressure source in response to the receipt of an input signal from said hydraulic pressure detection mechanism indicative of a pressure drop in the hydraulic passage below a predetermined level indicative of a mandrel break;said hydraulic pressure source being responsive to said electronic controller output signal to interrupt the supply of hydraulic pressure to said pulling head.