Geometrical instruments – Area integrators – Electrical
Patent
1982-02-16
1983-11-15
Little, Willis
Geometrical instruments
Area integrators
Electrical
33 1M, 33174TA, 269 21, G01B 728, G01B 734
Patent
active
044147481
ABSTRACT:
A ball mounting fixture for a roundness gage is disclosed. The fixture includes a pair of chuck assemblies oriented substantially transversely with respect to one another and mounted on a common base. Each chuck assembly preferably includes a rotary stage and a wobble plate affixed thereto. A ball chuck affixed to each wobble plate is operable to selectively support a ball to be measured for roundness, with the wobble plate permitting the ball chuck to be tilted to center the ball on the axis of rotation of the rotary stage. In a preferred embodiment, each chuck assembly includes a vacuum chuck operable to selectively support the ball to be measured for roundness. The mounting fixture enables a series of roundness measurements to be taken with a conventional rotating gagehead roundness instrument, which measurements can be utilized to determine the sphericity of the ball.
REFERENCES:
patent: 3099883 (1963-08-01), Bergemann et al.
patent: 3165834 (1965-01-01), Benton
patent: 3167326 (1965-01-01), Heessels
patent: 3524261 (1970-08-01), Klink
patent: 3829978 (1974-08-01), Basin et al.
J. A. Lipa et al., "High Precision Measurement of Gyro Rotor Sphericity", ecision Engineering, vol. 2, No. 3, p. 123, Jul. 1980.
T. S. R. Murthy et al., "Evaluation of Spherical Surfaces", Proceedings of the International Conference, Lercester, G. B. 1979.
Gauler Allen L.
Pasieka Donald F.
Besha Richard G.
Eklund William A.
Gaetjens Paul D.
Little Willis
The Unites States of America as represented by the Department of
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