Method of determining circularity and mean radius of closed curv

Details Method of determining circularity and mean radius of closed curv Method of determining circularity and mean radius of closed curv

1986-07-15

1988-03-08

Martin, Jr., William D.

Geometrical instruments

Gauge

With computer responsive to contact probe

33228, 33178E, G01B 508

Patent

active

047291745

ABSTRACT:
A device (gage, data station, and software) and method to measure mean radius and deviations from mean radius of nominally cylindrical or conical shapes in a plane perpendicular to the nominal axis of revolution using curvature measurements at uniformly spaced intervals about the circumference is described. The system divides the contour of interest into equal segments and measures the local curvature at each point. The group of measurements combines with a closure constraint to produce a condition of mathematical overcompleteness. This is used to minimize the accumulation of measurement error.

REFERENCES:
patent: 3352014 (1967-11-01), Kehke
patent: 3479744 (1969-11-01), Howland et al.
patent: 4141149 (1979-02-01), George et al.
patent: 4389788 (1983-06-01), Balogh et al.

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