Mapping system for an internal cylindrical surface

Details Mapping system for an internal cylindrical surface Mapping system for an internal cylindrical surface

1982-10-12

1985-06-11

Stearns, Richard R.

Geometrical instruments

Area integrators

Electrical

33286, 33DIG21, G01B 712, G01B 728

Patent

active

045219680

ABSTRACT:
Apparatus for mapping the inner surface of a cylinder utilizing a laser to align a spider disposed within the cylindrical surface, the spider having a rotatable arm with a finger connected to a linear variable differential transducer. The finger being biased outwardly and the arm is rotated 360.degree. from a predetermined angular position, the spider and arm are moved axially predetermined increments and signals indicative of the axial and annular position of the arm and the extension of the finger are recorded and processed to map the internal surface of the cylinder.

REFERENCES:
patent: 3631601 (1972-01-01), McNulty
patent: 3939570 (1976-02-01), Loftus
patent: 4021925 (1977-05-01), Loftus
patent: 4155648 (1979-05-01), Ferguson

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