The press-fitting method for press-fitting a plurality of clinching fasteners into a workpiece. The method includes: a drilling step S1 of drilling press-fit holes at press-fitting positions of the workpiece to press-fit first clinching fasteners that are press-fitted from a punch side of a turret punch press by NC control using the turret punch press; a workpiece mounting step S2 of mounting the workpiece so that the workpiece is superposed on a fastening jig that guides the first clinching fasteners; a fastener insertion step S3 of inserting a predetermined number of the first clinching fasteners taken out from a screw feeder into the press-fit holes of the workpiece; a fastener press-fitting step S4 of press-fitting the first clinching fasteners into the press-fit holes of the workpiece by NC control using the turret punch press; and a workpiece removal step S5 of removing the workpiece from the fastening jig.

A power tool for joining a deformable element having a threaded shaft to a workpiece. The joining tool comprising a threaded dowel adapted to receive the threaded shaft and rotatably within the housing. A nose is arranged around the threaded dowel, and the dowel is slidably movable relative to the nose. A motor drives a drive train to rotate the threaded dowel. A hydraulic system drives another drive train to move the threaded shaft and compress the deformable element. The joining tool includes a sliding unit. The nose is attachable to the sliding unit, and in an attached position the nose is slidably connected to the housing so that the hydraulic system may move the nose axially to compress the deformable element.

A power tool for joining a deformable element having a threaded shaft to a workpiece. The joining tool comprising a threaded dowel adapted to receive the threaded shaft and rotatably within the housing. A nose is arranged around the threaded dowel, and the dowel is slidably movable relative to the nose. A motor drives a drive train to rotate the threaded dowel. A hydraulic system drives another drive train to move the threaded shaft and compress the deformable element. The joining tool includes a sliding unit. The nose is attachable to the sliding unit, and in an attached position the nose is slidably connected to the housing so that the hydraulic system may move the nose axially to compress the deformable element.

The present invention discloses a fastener assembly having an engaging portion with a projecting stem which is interiorly hollowed over at least an intermediate extending range. The stem includes a solid end most extending portion. A receiving portion is provided with an inner rim defined edge, a diameter of an aperture between the rim edge being less than a diameter of an inserting portion of the stem. Upon forcible passage of the solid end of the fastener past the narrowed rim edge, an intermediate hollowed interior portion of the stem aligning with the narrowed rim edge and exhibiting a controlled collapse against said rim edge in order to anchor the portions together.

A method for fixing a plurality of workpieces via a hollow rivet element with an open setting end and a closed closing end. The method includes passing the rivet element through mutually aligned openings of the workpieces. The method also includes introducing a fluid, in particular air, under high pressure from the setting end of the rivet element in a hollow space of the rivet element. The method also includes plastically deforming and setting of the rivet element by the fluid at the closed closing end of the rivet element.

A method for fixing a plurality of workpieces via a hollow rivet element with an open setting end and a closed closing end. The method includes passing the rivet element through mutually aligned openings of the workpieces. The method also includes introducing a fluid, in particular air, under high pressure from the setting end of the rivet element in a hollow space of the rivet element. The method also includes plastically deforming and setting of the rivet element by the fluid at the closed closing end of the rivet element.

A power tool for joining a deformable element having a threaded shaft to a workpiece. The joining tool comprising a threaded dowel adapted to receive the threaded shaft and rotatably within the housing. A nose is arranged around the threaded dowel, and the dowel is slidably movable relative to the nose. A motor drives a drive train to rotate the threaded dowel. A hydraulic system drives another drive train to move the threaded shaft and compress the deformable element. The joining tool includes a sliding unit. The nose is attachable to the sliding unit, and in an attached position the nose is slidably connected to the housing so that the hydraulic system may move the nose axially to compress the deformable element.

A blind riveting device is provided, which is adapted for engagement to a handle having a powered translating member projecting therefrom. Force from the translating member imparted to a drive piston moves a second piston to pull a blind rivet connected to a jaw engaged with the second piston, thereby mounting the blind rivet.

A blind riveting device is provided, which is adapted for engagement to a handle having a powered translating member projecting therefrom. Force from the translating member imparted to a drive piston moves a second piston to pull a blind rivet connected to a jaw engaged with the second piston, thereby mounting the blind rivet.

A method for producing and installing a fastener, including the steps of forming an engaging portion having a projecting stem which is interiorly hollowed over at least an intermediate extending range, the stem including a solid end most extending portion, and forming a receiving portion having a surface, within which is configured an inner rim defined edge, a diameter of an aperture between said rim edge being less than a diameter of the stem. Additional steps include pressing the solid end most extending portion of the engaging portion through the inner rim edge of the receiving portion and aligning with the inner rim edge a location of the interiorly hollowed portion of the stem, causing inward collapsing of the aligned location by the rim edge to secure the engaging portion to the receiving portion.