Geometrical instruments – Distance measuring – Error compensation
Patent
1988-07-01
1990-08-21
Cuchlinski, Jr., William A.
Geometrical instruments
Distance measuring
Error compensation
33827, 335551, 335553, 364562, 364563, G01B 712
Patent
active
049494694
ABSTRACT:
A computerized gauge measures dimensions, typically in the range of 6.1865" to 6.1917" accurate to .+-.0.001", typically the diameter of a steel railroad car axle. The gauge simultaneously senses the temperature, typically within a range of -20.degree. F. to 100.degree. F. +1.degree. F., of the axle workpiece. In consideration of the predetermined coefficient of expansion of the workpiece, the gauge calculates the dimension that the workpiece would exhibit should it be thermally brought to a predetermined, 59.degree. F. by convention, reference temperature. From the workpiece-temperature-compensated dimension resulting from such calculation, the axle may be recognized as being (i) oversized but repairable, (ii) within an acceptable size range, (iii) undersized but repairable, or (iv) undersized and unrepairable. The gauge may further sense its own temperature and, in consideration of another predetermined coefficient of expansion as besuits the gauge, calculate a gauge- and workpiece-temperature-compensated dimension. All temperature sensing is normally integral with the measurement process. Compensation for temperature-induced dimensional variation is typically at an accuracy that is (i) much less than those dimensional variations caused by deviations from reference temperature that are being compensated for, (ii) commensurate with other sources of measurement error, and (iii) typically within --0.0001" for steel axles of 6+" diameter over a temperature range of greater than 100.degree. F.
REFERENCES:
patent: 1196789 (1916-09-01), Koelpin
patent: 3594909 (1971-07-01), Schultz
patent: 3780442 (1973-12-01), Gresho
patent: 3808696 (1974-05-01), Possati
patent: 3921300 (1975-11-01), Cox et al.
patent: 4062120 (1977-12-01), Lacagnina et al.
patent: 4141149 (1979-02-01), George et al.
patent: 4443945 (1984-04-01), Takemura et al.
patent: 4561185 (1985-12-01), Sakata et al.
patent: 4578868 (1986-05-01), Sasaki et al.
patent: 4736313 (1988-04-01), Nishimura et al.
Goodwin, L. E., "A Differential Transformer Gauge for Outside and Inside Diameters of Long Tubes", AEC Research and Development Report, Jan. 1958.
Albion Devices, Inc.
Cuchlinski Jr. William A.
Gutierrez Diego F. F.
LandOfFree
Temperature-compensated quantitative dimensional measurement dev does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Temperature-compensated quantitative dimensional measurement dev, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Temperature-compensated quantitative dimensional measurement dev will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1668246