Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1975-05-05
1976-07-20
Smith, Al Lawrence
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
51143, B24B 2108
Patent
active
039698483
ABSTRACT:
A machine for refinishing edge portions of air seal flanges on the ends of turbine blades, comprising a bench or base, an abrasive belt carried by multiple pulleys mounted on the base, means for driving the belt, a contoured shoe carried by the base at a work-performing station thereon, and a slide movable over an upper surface of the base toward and away from the work-performing station, the slide being adapted to carry the turbine blade being refinished. Means are provided on the slide for releasably clamping the blade in a position such that the air seal flange thereof is movable toward and away from the cutting surface of the abrasive belt. The contoured shoe is disposed in a position wherein it backs up the belt at its point of contact with the air seal flange. In addition, adjustable stop means are provided on the base for limiting the advancing movement of the slide (and turbine blade) toward the belt, wherein the operator merely urges the slide slowly in one direction until the stop means become operative. Such an arrangement limits the amount of material which is ground from the air seal flange, and thus imparts a predetermined desired contour thereto. In addition, indicator means are provided, carried by the base, for enabling periodic measurements to be made of the remaining flange dimension. As a result, greatly improved resurfacing characteristics are realized, as well as a high degree of repeatability from one unit to another.
REFERENCES:
patent: 1178400 (1916-04-01), Jones
patent: 1282022 (1918-10-01), Baker
patent: 2562229 (1951-07-01), Bell
patent: 2728364 (1955-12-01), Muehling
patent: 2751723 (1956-06-01), Lindmark
patent: 2934864 (1960-05-01), Karbowski
Godici Nicholas P.
Lehmann H. Gibner
Lehmann K. Gibner
Smith Al Lawrence
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