Geometrical instruments – Gauge – With support for gauged article
Patent
1987-02-05
1990-02-27
Haroian, Harry N.
Geometrical instruments
Gauge
With support for gauged article
33178D, 33178E, G01B 520
Patent
active
049034138
ABSTRACT:
In order to measure the surface profile of a workpiece, a yoke having two fixed feet is held in contact with the surface as the workpiece is rotated. A dynamic probe is mounted on the yoke by means of a transducer which outputs a signal dependent upon the position of the dynamic probe relative to a transducer datum. The fixed feet and the foot of the dynamic probe have a similar shape and size so that they detect irregularities in the workpiece surface with equal sensitivity. Fourier analysis of the signal caused by movement of the dynamic probe directly by the workpiece and also by movement of the yoke enables the profile of the workpiece to be determined. In order to improve the frequency response of the transducer output over the range of harmonics considered, the angles between the dynamic probe and the fixed probes are unequal. The apparatus does not require a precision spindle type machine to rotate the workpiece and is therefore particularly suitable for in situ measurement of workpiece profiles.
REFERENCES:
patent: 3056209 (1962-10-01), Oliver
patent: 3274693 (1966-09-01), Witzke
patent: 3942253 (1976-03-01), Gebel et al.
Haroian Harry N.
Rank Taylor Hobson Limited
LandOfFree
Surface profile measurement of workpieces does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Surface profile measurement of workpieces, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Surface profile measurement of workpieces will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-164763