Apparatus for measuring bearing torque

Details Apparatus for measuring bearing torque Apparatus for measuring bearing torque

1990-02-27

1991-07-16

Raevis, Robert

Measuring and testing

Frictional resistance, coefficient or characteristics

G01N 1902

Patent

active

050314432

ABSTRACT:
An apparatus measures torque in high accuracy, close tolerance, precision output axis suspension bearings and corresponding pivots. The bearings are received in corresponding apertures at the ends of axial aligned, rotatable test shafts. A pendulum, having an eccentric cylindrical shaped aperture for holding a pair of pivots in axial alignment, is disposed between the test shafts, the pivots being received in the bearings. The pendulum is further provided with a reflective panel; a laser light source is arranged to direct a beam of laser light onto the pendulum reflective panel, and a photosensitive position sensing array is oriented to sense a laser light beam reflected off the panel. The test shafts are rotated, and the magnitude of a deflection of the reflected laser light beam is measured by the array, and is directly proportional to torque in the bearings.

REFERENCES:
patent: 3127761 (1964-04-01), Gordon
patent: 3178928 (1965-04-01), Howe
patent: 3552198 (1971-01-01), Friedland
patent: 4672838 (1987-06-01), Reh

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