Trimming composite skin stiffener ends

Details Trimming composite skin stiffener ends Trimming composite skin stiffener ends

2006-10-16

2009-12-08

Rose, Robert (Department: 3727)

Abrading

Abrading process

C451S439000, C451S241000

Reexamination Certificate

active

07628679

ABSTRACT:
A tool for trimming the ends of stiffeners on aircraft composite skin panels accurately, rapidly and without damaging the underlying skins includes an expandable guide frame adapted to straddle and clamp to the stiffener at a selected longitudinal position thereon. The frame includes a pair of planar guide faces disposed on opposite sides of the stiffener and lying in a common plane transverse thereto. The rotatably supported opposite ends of a rotating abrasive drum are slid along respective ones of the guide faces such that the drum grinds away the stiffener in a plane parallel to the plane of the guide faces and thereby forms a trimmed end on the stiffener. The frame includes mechanisms for adjusting the angular inclination of the plane of the guide faces relative to the plane of the composite skin, and for preventing the grinding mechanism from cutting into the composite skin.

REFERENCES:
patent: 2258858 (1941-10-01), Meadowcroft
patent: 3656920 (1972-04-01), Helms
patent: 4035224 (1977-07-01), Anderson
patent: 5622733 (1997-04-01), Asher
patent: 7074474 (2006-07-01), Toi et al.
patent: 7496424 (2009-02-01), Froeschner et al.

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