Recess contour gauge

Details Recess contour gauge Recess contour gauge

1990-01-23

1990-11-20

Haroian, Harry N.

Geometrical instruments

Gauge

Comparator

335016, 33546, G01B 300

Patent

active

049707981

ABSTRACT:
The blade root grooves in a turbine disc are gauged for accuracy by a body resembling the blade root which includes electronic distance gauges in its surfaces. The body is introduced into a reference groove with two surfaces in contact with the groove surfaces and the distance between the other surfaces of the body and the corresponding surfaces of the reference groove displayed. The display is adjusted so that all the distances displayed are equal. The body may then be introduced into a disc groove during production and will indicate whether the disc groove being machined corresponds to the reference groove.

REFERENCES:
patent: 4219938 (1980-09-01), Tommeraas

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