Stock material or miscellaneous articles – Article of intermediate shape
Patent
1996-04-30
1999-02-09
Loney, Donald
Stock material or miscellaneous articles
Article of intermediate shape
428156, 451365, 269134, 269266, 416248, B29B 700, B63H 120, B24B 4106
Patent
active
058691944
ABSTRACT:
A blank for manufacturing a precisely shaped part, such as a turbine blade, generally comprises a tip, a root region longitudinally spaced from the tip, and a midspan region extending therebetween. The blank is further characterized by a sacrificial region extending substantially longitudinally from the root region, a stacking axis and a root centerline from which critical dimensions of the blade are referenced, and a plurality of locators. The first locator, a bore, being disposed at the tip on the stacking axis. The second locator, a notch, being disposed within the sacrificial region aligned with the stacking axis. The third locator, a notch, being disposed within the sacrificial region is characterized by a corner, which is parallel to the root centerline. The locators are shaped to mate with corresponding features on a fixture, such that the fixture uses the locators to securely hold the blank. Once the blank is clamped into the fixture, details, such as dove tails in the root region, can be accurately machined into the blank forming the precisely shaped part.
REFERENCES:
patent: 2577747 (1951-12-01), Gibian
patent: 3818646 (1974-06-01), Peterson
patent: 4016683 (1977-04-01), Cretella
patent: 4638602 (1987-01-01), Cavalieri
patent: 4805351 (1989-02-01), Dobson et al.
patent: 5275536 (1994-01-01), Stephens et al.
Loney Donald
United Technologies Corporation
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