Method and apparatus for inspecting shrouds of rotor blades

Details Method and apparatus for inspecting shrouds of rotor blades Method and apparatus for inspecting shrouds of rotor blades

1980-06-02

1982-06-08

Stearns, Richard R.

Geometrical instruments

Area integrators

Electrical

33174L, G01B 502, G01B 525

Patent

active

043332390

ABSTRACT:
A fixture 39 for positioning shroud 22 of a rotor blade 14 with respect to an apparatus for inspecting the blade is disclosed. The fixture is formed of a base 42, locater means 40 attached to the base, first and second references 44, 46, a second locater 48 which engages the blade along a curved edge 50 at a hinged joint and measuring devices 64, 66 which are slidable rails having an axis e and an axis f. A method for inspecting the blades by orienting a shroud reference plane SRP with respect to the first and second reference surfaces is disclosed. In an alternate embodiment, the blade is rotatably supported about a flat surface and uses a surface on the root 18 for rotation. The fixture also includes a master block 68 to provide a self-mastering feature to the fixture.

REFERENCES:
patent: 2938273 (1960-05-01), Johnson
patent: 3163942 (1965-01-01), Rowland
patent: 3670421 (1972-06-01), Kiewicz et al.
patent: 3832784 (1974-09-01), Sameuls et al.
patent: 4128929 (1978-12-01), De Musis
patent: 4222172 (1980-09-01), Mason

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