Geometrical instruments – Gauge – Collocating
Patent
1992-05-11
1993-01-19
Cuchlinski, Jr., William A.
Geometrical instruments
Gauge
Collocating
33520, 33613, G01D 2100
Patent
active
051797887
ABSTRACT:
A fixture for use with a programmable coordinate measuring machine to determine the centerline of a threaded hole formed in a workpiece from a planar surface and the distance between the centerlines of two similar holes, consists of a plug having a cylindrical section threaded to mate with the hole. A cylindrical head section formed concentrically with the threaded section and of greater diameter, has a counterbore formed at one end, concentrically with the centerline if the threaded section. A probe of a programmable coordinate measurement machine may be moved into the cylindrical bore and brought into contact with three spaced points on the interior diameter of the bore with three straight line motions. A coordinate measurement machine calculates the centerline of bore and thus the centerline of the threaded hole from these three measurements. By moving the probe into the bore of the second similar fixture located in the second hole, and determining the centerline of the second hole, the distance between the two centerlines may be calculated by the programmable coordinate measurement machine.
REFERENCES:
patent: 2679692 (1954-06-01), Fortner et al.
patent: 2686371 (1954-08-01), Flis
patent: 3026621 (1962-03-01), Papps et al.
patent: 4485453 (1984-11-01), Taylor
Cuchlinski Jr. William A.
Fulton C. W.
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