Back to results
US 4,897,000 AGranted
Clamping mechanism for an apparatus for drilling or countersinking holes in a workpiece
AssigneeFuji Jukogyo Kabushiki Kaisha
InventorTakashi Suzuki
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeFuji Jukogyo Kabushiki Kaisha
InventorTakashi Suzuki
Estimating the term…
An apparatus for countersinking rivet holes preformed at circumferential spacings in the fuselage of an airplane and in annular reinforcing ribs of H-shaped cross section in the fuselage at axial spacings. Included is a carrier arm cantilevered to a frame for insertion in the fuselage and reinforcing ribs. The carrier arm has a fluid-actuated cylinder and a fluid motor. The cylinder has a piston rod to which is coupled an offset anvil assembly for pressing the fuselage and a rib against a toolhead mounted to the frame. The piston rod, together with the anvil assembly thereon, is not only linearly displaceable but also rotatable about its own axis. The fluid motor actuates the piston rod for revolving the anvil assembly through an angle of at least 180 degrees. With such angular displacement of the anvil assembly, the apparatus is readily adaptable for countersinking two annular rows of rivet holes formed in those parts of the outer flange of each rib which are on the opposite sides of its web.
An apparatus for drilling and countersinking holes in a tubular work, comprising:
An apparatus for aligning and countersinking holes preformed in a tubular workpiece, comprising:
Dependencies are inferred from the claim text.