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US 4,674,552 AGranted
Method of, and a fixture for, forming a core for a casting
AssigneeTerry Corporation
InventorGeorge C. Howe
Life of this patent
Estimating the term…
Abstract
The method involves the disposition of a pair of walls in separated juxtaposition, to form a space therebetween, the walls having transverse, vane-cross-section shaped apertures formed therein; setting vanes in the apertures, across the space; filling the space with core material for solidification therein; and then separating the walls and vanes from each other after the material has solidified. The fixture provides a pair of walls so apertured, and a platform upon which, removably, to support the walls.
Claims8
A method of forming a core, for the casting of a turbine nozzle block therefrom, comprising the steps of:
- providing (a) a platform, (b) a pair of walls, (c) fasteners for removably fixing the walls to the platform, (d) vanes, and (e) core material;
- wherein
- said walls providing step comprises providing the pair thereof with apertures of a given, vane-cross-section shape formed in each;
- disposing the walls in juxtaposition upon, and perpendicular to, the platform, with (a) a space intervening between the walls, and (b) said apertures in one of said walls in alignment, across the space, with said apertures in the other of said walls;
- wherein
- said vanes providing step comprises providing vanes of said given, cross-section shape;
- setting the vanes in the apertures, so that (a) said vanes are engaged with both said walls, and (b) bridge across the space;
- wherein
- said disposing step comprises removably fixing said walls to the platform with the fasteners;
- filling the space with core material, and allowing the material to solidify therein;
- and after the material has solidified
- sliding the vanes through the core material and out of the apertures in one of the walls;
- unfastening and removing the latter wall from the platform;
- sliding the vanes through the core material and out of the apertures in the other of the walls;
- unfastening and removing the latter wall from the platform;
- and
- slidably centralizing the vanes in the core material.
14 more elements
A method of forming a core, for the casting of a turbine nozzle block therefrom, comprising the steps of:
- providing (a) a platform, (b) a pair of walls, (c) fasteners for removably fixing the walls to the platform, (d) vanes, and (e) core material;
- wherein
- said walls providing step comprises providing the pair thereof with apertures of a given, vane-cross-section shape formed in each;
- disposing the walls in juxtaposition upon, and perpendicular to, the platform, with (a) a space intervening between the walls, and (b) said apertures in one of said walls in alignment, across the space, with said apertures in the other of said walls;
- wherein
- said vanes providing step comprises providing vanes of said given, cross-section shape;
- setting the vanes in the apertures, so that (a) said vanes are engaged with both said walls, and (b) bridge across the space;
- wherein
- said disposing step comprises removably fixing said walls to the platform with the fasteners;
- filling the space with core material, and allowing the material to solidify therein;
- and after the material has solidfied
- sliding the vanes through the core material and out of the apertures in the walls;
- unfastening and removing the walls from the platform;
- and
- slidably centralizing the vanes in the core material.
12 more elements
A fixture, for forming a core, for the casting of a turbine nozzle block from such core, comprising;
- a pair of walls;
- and
- a platform;
- wherein
- said walls are disposed in juxtaposition upon, and perpendicular to, the platform, with a space intervening between the walls;
- both of said walls have fully bounded apertures of a given, vane-cross-section shape formed therein;
- said fully bounded apertures in one of said walls are in alignment, across said space, with said fully bounded apertures in the other of said walls;
- and further including
- vanes, of said given, cross-section shape, slidably engaged with said fully bounded apertures in both of said walls and bridging across said space in elevation above said platform;
- and
- fasteners having means cooperative with said platform and said walls for removably fastening said walls, externally relative to said space, to said platform;
- wherein
- only said walls comprise means for supporting said vanes in elevation above said platform and bridgingly across said space.
10 more elements
A fixture, for forming a core, for the casting of a turbine nozzle block from such core, consisting of:
- a platform;
- a pair of walls;
- fasteners for removably fixing the walls to the platform;
- and
- vanes;
- wherein
- said walls are disposed in juxtaposition upon, and perpendicular to, the platform, with a space intervening between the walls;
- both of said walls have fully bounded apertures of a given, vane-cross-section shape formed therein;
- said fully bounded apertures in one of said walls are in alignment, across the space, with said fully bounded apertures in the other of said walls;
- said vanes (a) are of said given, cross-section shape, (b) are slidably engaged with said fully bounded apertures in both said walls, and (c) bridge across said space in elevation above said platform;
- and
- said fasteners are commonly engaged with said platform and said walls.
9 more elements
Dependencies are inferred from the claim text.