Method and apparatus for ascertaining the radial location of a n

Details Method and apparatus for ascertaining the radial location of a n Method and apparatus for ascertaining the radial location of a n

1987-06-15

1989-02-07

Haroian, Harry N.

Geometrical instruments

Gauge

With support for gauged article

3320311, G01B 520, G01B 728

Patent

active

048022853

ABSTRACT:
A method and apparatus measure or gage worn railroad wheel profiles for the purposes of ascertaining the location of the new profile relative to the worn profile. The new profile is to be produced by a reprofiling operation such as a truing. For this purpose characteristic points on the worn profile are contacted in a radial and axial direction by a sensor and the respective displacement of the sensor is measured or gaged relative to a zero or null point. The location of the sensed points is then compared in a computer with a given reference location on a corrected profile. The corrected profile is then contacted with the sensed or gaged point which will make it possible to restore a correct profile with the least possible material removal in a milling or machining operation. In the apparatus for performing this method the sensor for the contacting or gaging of the worn points is preferably supported on a cross-slide enabling the sensor to perform a sensing movement in the axial direction and in the radial direction, preferably under a computerized numerical control.

REFERENCES:
patent: 1510819 (1924-10-01), Barth
patent: 3749501 (1973-07-01), Wieg
patent: 4268968 (1981-05-01), Przybylinski
patent: 4384407 (1983-05-01), Miyamoto
patent: 4483079 (1984-11-01), Band
Association of American Railroads, Manual of Standards and Recommended Practices, Section G--Part II, (21 pages total), published by the Association of American Railroads, Washington, D.C. 20036 (14th Edition), 3/1984.

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