B - Operations – Transporting – 23 – B
Patent
B - Operations, Transporting
23
B
77/20
B23B 41/00 (2006.01) B23B 47/00 (2006.01) B23B 51/10 (2006.01)
Patent
CA 1328750
ABSTRACT OF THE DISCLOSURE 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.
600159
Fuji Jukogyo Kabushiki Kaisha
Riches Mckenzie & Herbert Llp
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