Metal deforming – With means to drive tool – Including link-actuated tool support
Patent
1990-10-16
1991-12-10
Jones, David
Metal deforming
With means to drive tool
Including link-actuated tool support
72407, 72465, 100281, 100286, B21J 918
Patent
active
050707191
ABSTRACT:
Forming die assembly 18, 20 for carrying out a U-ing operation on a flat blank 58a has a forming tool 80 in one 18 of two ram assemblies 18, 20 which cooperates with a second forming tool 82 to perform the U-ing operation. During movement of the ram assemblies 18, 20 towards each other, the forming tool 80 is retracted and remains stationary during a final portion of the stroke of the ram assembly 18 in which it is carried. The forming tool is maintained in an extended position by a toggle mechanism during an initial portion of the stroke and the toggle is broken during a final portion of the stroke thereby to permit the forming tool to retract relative to the tooling assembly. On the return stroke, the forming tool is restored or shifted to its extended position by a biasing spring.
REFERENCES:
patent: 3044393 (1962-07-01), Kury
patent: 3661008 (1972-05-01), Richardson
patent: 4497196 (1985-02-01), Bakermans et al.
patent: 4819476 (1989-04-01), Bakermans et al.
patent: 4920782 (1990-05-01), Hellwig
patent: 4934173 (1990-06-01), Bakermans et al.
patent: 4967586 (1990-11-01), Hecht
AMP Incorporated
Jones David
LandOfFree
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