Geometrical instruments – Gauge – With calibration device or gauge for nuclear reactor element
Reexamination Certificate
2007-03-20
2007-03-20
Smith, R. Alexander (Department: 2859)
Geometrical instruments
Gauge
With calibration device or gauge for nuclear reactor element
C033S549000
Reexamination Certificate
active
11068248
ABSTRACT:
To enable the on-machine measurement of selected features of a workpiece formed on a live spindle lathe with a positioning rotary table, both the machine itself and the electronic touch probe used to conduct the measurements are calibrated. The accuracy of the machine itself is measured and calculated by including the measured errors not only in the x and z linear axes, but also in the y linear axis. Calibration of the touch probe is made by determining a correction factor which is obtained by the touch probe measurement of an artifact whose dimensions are precisely known by other means. This correction factor is then made to the nominal measurements made by the touch probe on the selected features of the workpiece to be measured, to obtain the actual dimensions thereof. Adjustments are also made to compensate for the differences in radial positions between the workpiece and the artifact.
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Banks Anton
Drescher Joseph D.
Jesse Christian
Marjama & Bilinski LLP
Smith R. Alexander
United Technologies Corporation
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