Setting tool for blind fasteners

A method for setting a blind fastener to a workpiece, the method for setting comprising the steps of:

• providing the workpiece partially defining a through hole,
• providing the blind fastener comprising a head and a shank partially defining an axial bore including a female thread,
• providing a setting tool comprising:
• a tool housing;
• a screw tool including a male thread that is rotationally and translationally movable within the housing along and around a tool axis between a retracted position and an extended position;
• a first electric motor axially fixed to the tool housing and including a first drive shaft and operable to drive a first transmission, the first drive shaft defining a first axis parallel to but radially spaced from the tool axis;
• a second electric motor with a second drive shaft axially fixed to the tool housing, and operable to drive a second transmission, the second drive shaft defining a second axis parallel to but radially spaced from the tool axis and from the first axis;
• a solid roller screw arranged for rotation and axial movement in the tool housing and drivably connected to the first electric motor via the first transmission, and drivably connected to the second electric motor via the second transmission, and the solid roller screw is axially concentric with and in driving connection to the screw tool;
• a feeder including a fastener delivery tube, the fastener delivery tube connected at a first end to a blind fastener supply and at a second end to the tool housing, and the fastener delivery tube merges with the tool housing through a receiver assembly, the receiver assembly including an interface channel connecting directly the delivery tube with the tool housing;
• supplying the blind fastener to the setting tool from a blind fastener supply and delivering the blind fastener in the tool housing in front of the screw tool when the screw tool is in the retracted position;
• engaging the screw tool with the blind fastener within the tool housing;
• and
• setting the blind fastener to the workpiece.