Raised surface features for hot blow-forming tooling

Details Raised surface features for hot blow-forming tooling Raised surface features for hot blow-forming tooling

2005-01-18

2005-01-18

Jones, David (Department: 3725)

Metal deforming

By application of fluent medium, or energy field

With actuated tool engaging work

C072S060000, C072S340000, C029S421100

Reexamination Certificate

active

06843088

ABSTRACT:
Apparatus and method for hot blow-forming an article from a blank of sheet metal. Simultaneously, a surface of the blank of sheet metal is formed against a form tool body that partially defines a forming surface and against a form tool insert that also partially defines the forming surface and that is positioned within a recess of the form tool body such that a lateral gap is defined between the form tool insert and form tool body. Opposed projections are provided on upper surfaces of the form tool insert and the form tool body adjacent the gap. The projections create a raised portion on the sheet metal panel that corresponds to the gap. The raised portion is removed flush with respect to a visible surface of the article.

REFERENCES:
patent: 3435654 (1969-04-01), Papst
patent: 3530699 (1970-09-01), Uberbacker
patent: 5920981 (1999-07-01), Bushelle et al.
patent: 6253588 (2001-07-01), Rashid et al.
patent: 20040079129 (2004-04-01), Krajewski et al.

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