Integral frame and method of manufacture

Details Integral frame and method of manufacture Integral frame and method of manufacture

1998-12-08

2000-07-04

Gerrity, Stephen F.

Gear cutting, milling, or planing

Milling

Process

409131, B23C 900

Patent

active

060829389

ABSTRACT:
A unitary frame structure is disclosed as well as a method of manufacturing the same. The unitary frame structure typically includes a first beam, a second beam adjoining the first beam, and a cross member adjoining the first beam and the second beam. Significantly, each of the first beam, second beam and cross beams have a Z shaped cross-sectional structure formed by a first flange that is adjacent a substantially vertical portion further shaped with a second lip adjacent an opposite end of the first lip. This Z cross section is formed by machining a unitary pallet in a first vertical direction to form the first lip, flipping the pallet and then machining in a substantially vertical portion in the opposite second vertical direction to form the second lip on an opposite side of the substantially web section only. Placed periodically along the rib sections are stiffening elements formed during the machining operation.

REFERENCES:
patent: 3749625 (1973-07-01), Berg
patent: 4260304 (1981-04-01), Jacobi
patent: 5079821 (1992-01-01), Parsons
patent: 5273806 (1993-12-01), Lockshaw et al.
patent: 5487930 (1996-01-01), Lockshaw et al.
patent: 5508085 (1996-04-01), Lockshaw et al.
patent: 5836729 (1998-11-01), Fink

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