Russell H Samyn

US Patent:

49195743, Apr 24, 1990

Filed:

Mar 31, 1989

Appl. No.:

7/331196

Inventors:

Russell H. Samyn - Rolling Meadows IL

Assignee:

Illinois Tool Works Inc. - Glenview IL

International Classification:

B23B 3102

US Classification:

409219

Abstract:

A tool or workpiece holder retention mechanism which engagably retains the holder retention portion of the holder by creating a clamping force which draws the holder retention portion into a cooperatively formed area between two retaining jaws. Two abutting surfaces, one on the holder and one on the abutting surface on the retention mechanism housing, have formed thereon cooperatively engagable surfaces at least one of which is generally spirally formed, which meshedly engage to self-center the tool holder. Preferably the cooperatively engagable surfaces are in the form of mating spiral gear teeth specifically the jaws and the holder retention portion are constructed and actuated so as to be radially freely floatable to avoid interference with the self-centering function of the mating spiral surfaces.