Accuracy testing device

Details Accuracy testing device Accuracy testing device

1990-06-20

1991-10-01

Haroian, Harry N.

Geometrical instruments

Gauge

With calibration device or gauge for nuclear reactor element

G01B 731

Patent

active

050521152

ABSTRACT:
A testing device for testing the setting accuracy of a machine by measuring the spacing of a first machine locus with respect to a second machine locus at at least two points on a circular arc, comprises a first, ball-ended probe adapted to be fixed to one part of the machine with the center of the ball representing said one locus. A second such probe is adapted to be fixed to another part of the machine with the center of the ball representing the second locus, interconnecting means for interconnecting said ball ends at a predetermined spacing in mountings permitting relative rotation of the ball ends with respect to the interconnecting means, at least one single axis transducer for sensing the displacement of one ball end, and computing means for calculating from the transducer output the deviation from a precise arcuate path of the first ball-ended probe.

REFERENCES:
patent: 4435905 (1984-03-01), Bryan
patent: 4884348 (1989-12-01), Zeller et al.

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