O-ring inspection method and apparatus

Details O-ring inspection method and apparatus O-ring inspection method and apparatus

1976-09-27

1977-12-13

Corbin, John K.

Optics: measuring and testing

Angle measuring or angular axial alignment

With photodetection remote from measured angle

356167, 356200, 356244, G01B 1110

Patent

active

040626334

ABSTRACT:
A pair of mandrels crossing at a right angle are moved into the center of an O-ring and then spread apart to stretch the O-ring around the mandrels to secure it and to form it into a twisted path. The mandrels are rotated to drive the O-ring through the twisted path so that the angular orientation of any given cross section of the O-ring changes as it advances around the path. An optical measurement apparatus senses cross section diameter of the O-ring at several locations and frequently repeats the measurement during the O-ring movement. The diameters are electrically compared to determine dimensional anomalies in the O-ring.

REFERENCES:
patent: 3870890 (1975-03-01), Binks et al.
patent: 3874798 (1975-04-01), Antonsson et al.
patent: 3947129 (1976-03-01), Wiklund

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