Method of determining cylindricity and squareness

Details Method of determining cylindricity and squareness Method of determining cylindricity and squareness

1985-02-28

1987-02-17

Krawczewicz, Stanley T.

Electricity: measuring and testing

Conductor identification or location

Inaccessible

G01R 2726

Patent

active

046442618

ABSTRACT:
Method of determining cylindricity and squareness of mating shaft and bearing members by rotating one member with respect to the other stationary member while using a fluid film as a stiff supporting lubricant to establish a stable and dynamic reference axis, and placing a sensing transducer in the stationary member to measure the variation in distance between the transducer and surface of the rotating member at predetermined increments of rotation and to measure the deviation in squareness in a thrust bearing arrangement. The rotating member is axially translated relative to the transducer and cylindricity measurements made at regular intervals during each of a plurality of revolutions during the axial translation to precisely map the variations in distance to the surface of the rotating member. Squareness measurements are also made under dynamic thrust loading to establish deviations from a true right cylinder.

REFERENCES:
patent: 3263167 (1966-07-01), Foster et al.
patent: 3386031 (1968-05-01), Able et al.
patent: 3488581 (1970-01-01), Foster
patent: 3502969 (1970-03-01), Courtney-Pratt et al.

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