Tool for forming threaded hole in a hydroformed part

Details Tool for forming threaded hole in a hydroformed part Tool for forming threaded hole in a hydroformed part

2007-01-11

2008-10-28

Tolan, Edward (Department: 3725)

Metal deforming

By use of tool acting during relative rotation between tool...

With cutting of work or product

C072S055000, C072S325000

Reexamination Certificate

active

07441433

ABSTRACT:
A tool forms a threaded hole in a hydroformed part while the part remains in a hydroforming die cavity and under pressure. The tool has a hole-piercing end portion adapted on advancement of the tool to pierce and form a hole in the part and an extruding portion adapted on continued tool advancement to extrude an annular extrusion that extends into the tube interior. An adjacent sealing portion of the tool seals the hole during the ongoing advancement and extrusion of the annular extrusion so that hydroforming fluid remains under pressure. A thread-forming portion of the tool forms an internal thread within the annular extrusion upon the continued advancement and rotation of the tool.

REFERENCES:
patent: 3295398 (1967-01-01), Morain
patent: 3302493 (1967-02-01), Hulslander et al.
patent: 3411527 (1968-11-01), Nielsen, Jr.
patent: 3812698 (1974-05-01), Stock
patent: 6109086 (2000-08-01), Gambrel et al.
patent: 6658908 (2003-12-01), Ghiran et al.
patent: 6931901 (2005-08-01), Ghiran et al.
patent: 7003995 (2006-02-01), Ghiran et al.
patent: 2007/0101787 (2007-05-01), Fujiuchi et al.

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