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US 4,986,154 AGranted
Tool for cutting in tube ends and method
AssigneeThe Boeing Company
InventorLorenzo Vernacchio
Life of this patent
Estimating the term…
Abstract
A method and tool for forming a contour cut in a tube end by applying a force from within the tube end which is applied against the interior surface of the tube end. The tube includes a punch which engages the interior surface of the tube end and has a cutting edge generally conforming to the shape of the contour cut. Preferably each tube end is provide with mirror image contour cuts.
Claims5
A method of forming a contour cut in a tube end, the tube end having an interior surface and an exterior surface, comprising the steps of:
- inserting a tube end within a contour cutting tool means;
- applying with said tool means, a force against a portion of the interior surface of the tube end while restraining a corresponding portion of the exterior surface of the tube end, causing said tube end in engagement with said tool means to be cut by shearing;
- rottating the tube end 180.degree. .
- inserting the rotated tube end within the contour cutting tool means;
- and
- applying, with said tool means, a force against the remaining portion of the interior surface of the tube end while restraining a corresponding portion of the exterior surface of the tube end causing said tube end in engagement with said tool means to be cut by shearing.
3 more elements
A tool for forming a contour cut in a tube end, the tube end having an interior surface, comprising:
- a housing having a longitudinal bore intersected by a transverse bore;
- a punch reciprocally displaceable within the longitudinal bore, said punch having a contour cutting edge adapted to be received within a tube end inserted into the transverse bore and a slot at one end of which the contoured cutting edge is situated, said slot receiving a portion of the tube therein so that the cutting edge extends into the tube end;
- and
- means for displacing said punch within the longitudinal bore such that the cutting edge engages the interior surface of the tube end to form a cut surface.
1 more element
Dependencies are inferred from the claim text.