Metal founding – Means to shape a forming surface – Including means for compacting particulate fluent mold...
Patent
1990-02-28
1991-12-10
Seidel, Richard K.
Metal founding
Means to shape a forming surface
Including means for compacting particulate fluent mold...
164211, 164172, 164 37, B22C 1502, B22C 1508
Patent
active
050709283
ABSTRACT:
A forming press, such as a foundry squeeze press, includes an axially movable bolster having locking hooks for engaging trunnions on a replaceable forming tool, such as a foundry sand squeeze board, to releasably secure the tool against the bolster and yet permit quick change-over from one forming tool to another to accommodate production of different workparts (e.g., mold copes or drags). The hooks are pivoted by a linear screw device to first positions wherein they are engaged with the trunnions. The hooks have pivot axes offset from the trunnion axes in such a manner as to impart such a component of motion along the bolster axis to the hooks when they are pivoted to the first positions as to tightly clamp the tool against the bolster. The hooks are pivotable by the linear screw device to second positions disengaged from the trunnions to free the forming tool for removal from the bolster.
REFERENCES:
patent: 23687 (1953-07-01), Hursh
patent: 4063586 (1977-12-01), Keller
patent: 4617978 (1986-10-01), Damm
Metals Handbook, vol. 5, "Forging and Casting", pp. 164-165, 8th Ed.
Fekete Douglas D.
General Motors Corporation
Pelto Rex E.
Seidel Richard K.
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