A blind rivet setting tool including a channel along which the broken mandrels of set rivets can be moved and biasing means for biasing blocking means into the channel for blocking the movement of a broken mandrel along the channel whereby a broken mandrel must urge the blocking means out of the way against said bias in order to move past the blocking means.

A blind rivet setting tool including clamping means for releasably clamping a nosepiece in place such that a blind rivet can bear against the nosepiece while the mandrel thereof is pulled; and a method of changing nosepieces using the clamping means.

This relates to a method for the quality control of a blind fastener installation in a structure comprising a sleeve and a core bolt, with a deformation of a rear side of the structure, a signal being generated during the installation process. The process includes a) identification of two notable points of the signal, chosen among: pulling start point (S1); buckling (B1) of the sleeve; contact (B2, S2) of the sleeve or of the core bolt; force setpoint (B3) or fracture (S3) of a portion of the core bolt; b) estimation of a first parameter as a function of a notable point, characterizing a bulb in contact with the rear side; c) estimation of a second parameter as a function of a notable point, characterizing a tension applied in the core bolt; and d) for each estimated parameter, comparison with a condition that indicates the proper installation of the fastener.

This relates to a method for the quality control of a blind fastener installation in a structure comprising a sleeve and a core bolt, with a deformation of a rear side of the structure, a signal being generated during the installation process. The process includes a) identification of two notable points of the signal, chosen among: pulling start point (S1); buckling (B1) of the sleeve; contact (B2, S2) of the sleeve or of the core bolt; force setpoint (B3) or fracture (S3) of a portion of the core bolt; b) estimation of a first parameter as a function of a notable point, characterizing a bulb in contact with the rear side; c) estimation of a second parameter as a function of a notable point, characterizing a tension applied in the core bolt; and d) for each estimated parameter, comparison with a condition that indicates the proper installation of the fastener.

A riveting tool accessory includes a cylinder handgrip. A rotating member and a transmission member are disposed in the cylinder handgrip. The rotating member is axially positioned and connected to the cylinder handgrip. The transmission member is circumferentially positioned and connected to the cylinder handgrip. When the rotating member rotates forwards or backwards, the transmission member is driven to move backwards or forwards. A front end of the transmission member is provided with a connecting member. A front end of the cylinder handgrip is provided with a guide nozzle assembly. The connecting member is disposed in the guide nozzle assembly in a penetrating manner. A front end of the connecting member can reach out of the guide nozzle assembly. A spring is disposed between the transmission member and the guide nozzle assembly. A safety valve mechanism is disposed between the transmission member and the connecting member.

A device for inserting the blind fastener in the fastening site, a pulling and extracting device for swaging the blind fastener in the fastening site and a passive compliance device that binds the inserting device to the pulling and extracting device. The passive compliance device allows the installation of the bind fastener without sensors.

An electric rivet nut machine comprises a motor having a first output shaft and a second output shaft; the first output shaft is connected with a first gear set, and the second output shaft is connected with a second gear set; and a rivet nut drive unit having a rivet nut shaft, a coupling gear and a moving gear; the coupling gear is engaged with the second gear set; the moving gear is engaged with the first gear set; through the first gear set and the second gear set of the motor respectively engaging with the rivet nut drive unit, and through the first output shaft and the second output shaft at two ends of the motor respectively engaging with the first gear set and the second gear set, different gear ratios can be formed, and better gear drive ratio can be produced for the rivet nut drive unit.

An electric rivet nut machine comprises a motor having a first output shaft and a second output shaft; the first output shaft is connected with a first gear set, and the second output shaft is connected with a second gear set; and a rivet nut drive unit having a rivet nut shaft, a coupling gear and a moving gear; the coupling gear is engaged with the second gear set; the moving gear is engaged with the first gear set; through the first gear set and the second gear set of the motor respectively engaging with the rivet nut drive unit, and through the first output shaft and the second output shaft at two ends of the motor respectively engaging with the first gear set and the second gear set, different gear ratios can be formed, and better gear drive ratio can be produced for the rivet nut drive unit.

An automatic riveting gun and a method of operating same are disclosed, the automatic riveting gun includes a gun body including a rivet cavity, a front cavity, and a main cavity; a rivet clamping assembly is disposed on the gun body adjacent to the rivet cavity; a front-dynamic structure is movably disposed in the rivet cavity and the front cavity and a main-dynamic structure is movably disposed in the front cavity and the main cavity. The front-dynamic structure includes a claw sleeve. A claw mechanism is movably disposed in the main-dynamic structure. A front elastic element provides an elastic force to the claw mechanism and a main elastic element provides an elastic force to the main-dynamic structure.

The present invention provides a pull riveting system including two or more pull-rivets and a riveting device, the pull-rivet including a rivet mandrel; the riveting device including two or more rivet gun heads, each provided with a rivet gun hole; wherein each of the pull-rivets is provided with a first label; each rivet gun head is provided with a second label; when one pull-rivet is matched with one rivet gun head, the rivet mandrel of this pull-rivet is applicable to the rivet gun hole of the rivet gun head, and the first label of the pull-rivet is the same as or corresponds to the second label of the rivet gun head. The present invention has the advantageous effects that labels easily identified with naked eyes are arranged on the rivet gun head and the pull-rivet, such that the pull-rivet and the rivet gun head which are matched with each other form a simple correspondence, so that the user may rapidly identify the pull-rivet specification and the rivet gun head matched with the pull-rivet, effectively reducing the waste of the pull-rivets, lowering the damage risk to the rivet gun, and effectively improving the work efficiency.