Gear cutting – milling – or planing – Milling – With regulation of operation by templet – card – or other...
Patent
1992-03-06
1994-02-08
Bilinsky, Z. R.
Gear cutting, milling, or planing
Milling
With regulation of operation by templet, card, or other...
408241B, 409130, 409178, B23C 120
Patent
active
052844064
ABSTRACT:
The present invention provides a method and apparatus including a rotor mountable fixture for guiding a cutting tool powered by a hand held air motor to machine a gas turbine engine rotor without removing the rotor from its mountings in the engine. In one particular embodiment the fixture includes a root having the same contour as a blade root slot of a rotor, a base having a platform attached to the root, and a machining guide in the form of a bushing restrained in a guide slot operable to receive and guide a hand held air motor powered cutting tool for machining the rotor. The present invention provides an accurate means to machine a gas turbine engine rotor without removing the rotor from its mounting. In one particular embodiment a method for machining the rotor in the field is provided using a hand held air motor to power a machining tool to cut a blade damper pocket in the dovetail slot of a pressure compressor rotor.
REFERENCES:
patent: 3823643 (1974-07-01), Feucht et al.
patent: 4451959 (1984-06-01), Miller et al.
United Drill Bushing Catalog. pp. 52, 53, Jun. 15, 1973.
Dunkman Dewey D.
Mueller Peter W.
Stevenson Joseph T.
Stonom Elbert
Bilinsky Z. R.
General Electric Company
Maria Carmen Santa
Squillaro Jerome C.
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