Device for fastening lockbolt

A lockbolt fastening device comprising:

• a lockbolt gun including a body portion provided with a grip for pulling a lockbolt therein, and a grip portion protruding from a lower portion of the body portion and having an operation switch installed on an outside of the grip portion, wherein a hydraulic pressure supply passage configured to supply hydraulic pressure for driving the grip, a hydraulic pressure discharge passage configured to discharge hydraulic pressure supplied to the grip, and an air supply passage configured to supply pneumatic pressure to the operation switch are installed inside the grip portion, and a discharge hole configured to discharge air of the air supply passage when the operation switch is operated is formed outside the grip portion;
• a driving force supply unit including a hydraulic pressure supply pump configured to supply hydraulic pressure to the hydraulic pressure supply passage, a hydraulic recovery pump configured to recover hydraulic pressure discharged from the hydraulic pressure discharge passage, and an oil tank configured to supply oil to the hydraulic pressure supply pump and to recover oil from the hydraulic recovery pump;
• an operation unit including a first sol valve connected to the hydraulic pressure supply pump, the hydraulic recovery pump, and the air supply passage, an air supply unit configured to supply air to the first sol valve, and an air pressure regulator installed between the first sol valve and the air supply unit and configured to adjust pneumatic pressure supplied to the first sol valve;
• a housing configured to accommodate the driving force supply unit and the operation unit;
• and
• a controller configured to, upon receiving an operation signal from the operation switch, perform control to supply the pneumatic pressure from the first sol valve to the hydraulic pressure supply pump and the hydraulic recovery pump and to operate the hydraulic pressure supply pump and the hydraulic recovery pump.