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US 5,705,204 AGranted
Model for a casting mold
AssigneeMTU Motoren- und Turbinen-Union Friedrichshafen GmbH
InventorsHeinz Hofmeister, Helmut Schmollinger
Life of this patent
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Abstract
A model for a casting mold, particularly for the casting of blade wheels for turbo-engines, includes multiple cores which can be fitted into one another. The cores have exterior rings, portions of blade duct cores and connector plates. The portions of the blade duct cores supplement one another.
Claims13
A model for a casting mold used to form a complete cast piece, comprising:
- first and second rotationally symmetrical one-piece cores which can be fitted into one another;
- said first core having a shoulder and a plurality of first blade-shaped segments extending from said shoulder lead to a first connector plate;
- said second core having an exterior ring to radially rest said second core against said shoulder;
- a plurality of second blade-shaped segments leading from said exterior ring to a second connector plate;
- and
- wherein at least one of said second blade-shaped segments and said exterior ring abut said first blade-shaped segments in a circumferential direction.
3 more elements
A pattern for a casting mold having an upper box and a lower box, comprising:
- a core assembly group insertable into one of said upper and lower boxes to form the casting mold, said core assembly group comprising:
- a first rotationally symmetrical one-piece core having a shoulder and several first blade-shaped segments extending from said shoulder to a first connector plate, a rotational axis of the core assembly group extends through said first connector plate;
- a second rotationally symmetrical one-piece core having an exterior ring from which several second blade-shaped segments extend to a second connector plate, said second core nesting with said first core such that the exterior ring rests against the shoulder and said second connector plate is coaxially arranged about said rotational axis with said first connector plate;
- and
- a third core formed of individual core segments connected together with a ring-shaped core mark, said third core being supported via the second core.
2 more elements
Dependencies are inferred from the claim text.