Hex swaged fluid coupling and method of making same

摘要

A fluid coupling including a cylindrical stem having a fluid conduit therethrough and a hollow shell provided over a first end of the stem. A tool engaging hexagonal shape on an outer surface of the shell is disposed radially outward from a swage joined portion of the shell to the stem. The tool engaging hexagonal shape includes six non-contiguous flats having rounded portions therebetween. The swage joined portion and the tool engaging hexagonal shape are located at the same axial location along a centerline of the hollow shell, and the swage joined portion has an axial length along the centerline corresponding to an axial length along the centerline corresponding to an axial length along the centerline of the tool engaging hexagonal shape.

主权项

1. A method of making a fluid coupling, comprising the steps of:
positioning a hollow shell around a cylindrical stem; die swaging the hollow shell to the cylindrical stem to mechanically connect the hollow shell to the cylindrical stem over a joined portion that has an axial length from where a swaging deformed inner surface of the hollow shell and cylindrical stem first contact each other to where the deformed inner surface of the hollow shell and cylindrical stem no longer contact each other; and the die swaging step includes deforming an outer surface of the hollow shell into a wrenching surface that includes a plurality of flats, and axially securing the hollow shell to the cylindrical stem by deforming the hollow shell to reduce the inner diameter of the hollow shell along the entire axial length from a pre-swagged inner diameter smooth along the entire axial length to a post-swaged inner diameter.